cloud controlled intrusion detection & burglary prevention stratagems in home automation...

CLOUD CONTROLLED INSTRUSION DETECTION AND BURGLARY PREVENTION STRATAGEMS IN HOME AUTOMATION SYSTEM

CHAPTER 1

PREAMBLE

1.1 INTRODUCTION

Home automation offers comfort and security. Home surveillance systems are being used for

more than three decades. Many improvements have been made in the system and now it is

yet to be commercialized due to the High cost of server usage .This study combines the use

of Cloud computing and image processing. The standard cloud computing model is in which

we make our services available to the general public over the Internet as long as they use our

web interface . It emphasizes in enhancing home security using cloud computing technology.

Cloud computing offers remote services with a user's data, software and computation. End

users access cloud-based applications through a web browser or a light-weight desktop or

mobile app while the business software and user's data are stored on servers at a remote

location Its usage is very much needed for safety and security. This technology is used to

detect an intruder at home when nobody is present. As soon as the intruder is in, the

controller captures the video and sends it to the user and in turn he/she receives an SMS alert

and is ready to watch the video of the intruded room through any remote device.

1.2 Objective

To develop an intelligent security system where it helps the user to have a

secured home.

To prevent the burglary and intrusion

To get the real time video of the home environment when burglary or instrusion

is detected

DEPT. OF E&CE, GECH 2014


1.3 Problem definition

Home automation, as a model of pervasive computing, is progressively becoming substantial

for people homed in developed societies. With the proliferation in the usage of household

electronic and electrical appliances, numerous data and multifarious control cumbersome

burden on residential home automation control units, making it expensive and difficult for

the users to autonomously install, control and monitor the home automation system.

Security surveillance part takes in significant number of home automation systems,

deploying digital cameras and sensors to monitor and report intrusion events and thereby

reducing damages caused by burglary

1.4 Methodology

1) Intrusion detected.

2) Report intrusion to cloud server.

3) Notify user with SMS.

4) User seeks surveillance views.

5) Output from surveillance cameras are streamed to cloud.

6) User views the status of all rooms.

7) User confirms real intrusion.

8) Action 1: inform neighbors.

9) Action 2: inform police.

10) Action 3: ringing alarm bell sound.



1.4 LITERATURE SURVEY

In our earlier works, we designed and implemented our cloud based home power

management system (a vital part of most home automation systems). The design of our home

automation system makes it low cost, flexible and easy to install. We replaced the traditional

electrical switch board of each room with our cloud connected board where each board is

a node of the home automation system, as a result creating an ad-hoc wireless network

among all the boards in a household, using 802.11n standard. The use of 802.11n empowers

us to create an ad-hoc network with adequate signal range to operate across a house and

concurrently connect each node of the distributed home automation system directly to the

cloud over Internet Protocol, without the requirement of dedicated or specialized gateway as

commonly required. In addition to an 802.11n radio, every node can be equipped with a low

cost Universal Mobile Telecommunications System (UMTS) Release 5 modem. Using such a

UMTS modem, we configured one board to act as the Internet gateway for an entire ad-hoc

network, by connecting it to a public High-Speed Downlink Packet Access (HSDPA)

network of a national Internet Service Provider (ISP) with down-link speed of 7.2 Megabit/s

and uplink speed of 1.8 Megabit/s.

Digital video recorder (DVR) captures videos continuously but it requires some human

resource to monitor it which is applicable only in organizations and business areas whereas

this will not be suitable for a home environment. If any motion is detected by the camera, it

will be sent to the controller. Controller analyses the signal and processes it by using

thresholding algorithm. By using LAN connection in the room, it can be transferred to the

cloud server and stored in it. To inform the status of the room, the user will be receiving the

SMS alert in his/her mobile. So, user can view the video of the intruder by entering the URL

of the server using internet connection anywhere from the world. If an alert is to be given, the

alert button on the page can be clicked so that the alarm rings. Alert is also sent to the nearby

police station to protect the house. Cloud computing (or simply cloud) refers to the online

services provided over the Internet together with the hardware and software resources of the

server that offer those services.



CHAPTER 2

CLOUD COMPUTING

2.1 What is cloud computing?

Cloud computing is a subscription-based service where you can obtain networked storage

space and computer resources. One way to think of cloud computing is to consider your

experience with email. Your email client, if it is Yahoo!, Gmail, Hotmail, and so on, takes

care of housing all of the hardware and software necessary to support your personal email

account. When you want to access your email you open your web browser, go to the email

client, and log in. The most important part of the equation is having internet access. Your

email is not housed on your physical computer; you access it through an internet connection,

and you can access it anywhere. If you are on a trip, at work, or down the street getting

coffee, you can check your email as long as you have access to the internet. Your email is

different than software installed on your computer, such as a word processing program.

When you create a document using word processing software, that document stays on the

device you used to make it unless you physically move it. An email client is similar to how

cloud computing works. Except instead of accessing just your email, you can choose what

information you have access to within the cloud.

Fig: 2.1 cloud computing



2.2 Use of cloud computing

The cloud makes it possible for you to access your information from anywhere at any time.

While a traditional computer setup requires you to be in the same location as your data

storage device, the cloud takes away that step. The cloud removes the need for you to be in

the same physical location as the hardware that stores your data. Your cloud provider can

both own and house the hardware and software necessary to run your home or business

applications. This is especially helpful for businesses that cannot afford the same amount of

hardware and storage space as a bigger company. Small companies can store their

information in the cloud, removing the cost of purchasing and storing memory devices.

Additionally, because you only reduce their subscription as their business grows or as they

find they need less storage space. One requirement is that you need to have an internet

connection in order to access the cloud. This means that if you want to look at a specific

document you have housed in the cloud, you must first establish an internet connection either

through a wireless or wired internet or a mobile broadband connection. The benefit is that

you can access that same document from wherever you are with any device that can access

the internet. These devices could be a desktop, laptop, tablet, or phone. This can also help

your business to function more smoothly because anyone who can connect to the internet and

your cloud can work on documents, access software, and store data. Imagine picking up your

smart phone and downloading a .pdf document to review instead of having to stop by the

office to print it or upload it to your laptop.

Fig: 2.2 use of cloud computation



CHAPTER 3

PROJECT OVERVIEW

3.1 BLOCK DIAGRAM

User

BUZZER

Fig: 3.1 block diagram of project


P89v51RD2

Power supply

PIR Sensor

UART

MAX232PC

Camera

Cloud sever

LCD Display


Fig: 3.2 working of project



Fig: 3.3 A photograph of the security surveillance page opened on a mobile



Fig: 3.4 A photograph of a mobile device displaying a SMS alert to the user

in case of an intrusion event.



CHAPTER 4

HARDWARE COMPONENTS

4.1 Microcontroller

4.1.1 P89V51RD2

The P89V51RD2 is an 80C51 microcontroller with 64 kB Flash and 1024 bytes of data

RAM.A key feature of the P89V51RD2 is its X2 mode option. The design engineer can

choose to run the application with the conventional 80C51 clock rate (12 clocks per machine

cycle) or select the X2 mode (6 clocks per machine cycle) to achieve twice the throughput at

the same clock frequency. Another way to benefit from this feature is to keep the same

performance by reducing the clock frequency by half, thus dramatically reducing the EMI.

The Flash program memory supports both parallel programming and in serial In-System

Programming (ISP). Parallel programming mode offers gang-programming at high speed,

reducing programming costs and time to market. ISP allows a device to be reprogrammed in

the end product under software control. The capability to field/update the application

firmware makes a wide range of applications possible. The P89V51RD2 is also In-

Application Programmable (IAP), allowing the Flash program memory to be reconfigured

even while the application is running.

4.1.2. FEATURES

80C51 Central Processing Unit

5 V Operating voltage from 0 to 40 MHz

64 kB of on-chip Flash program memory with ISP (In-System Programming) and

IAP (In-Application Programming)

Supports 12-clock (default) or 6-clock mode selection via software or ISP



SPI (Serial Peripheral Interface) and enhanced UART

PCA (Programmable Counter Array) with PWM and Capture/Compare functions

Four 8-bit I/O ports with three high-current Port 1 pins (16 mA each)

Three 16-bit timers/counters

Programmable Watchdog timer (WDT)

Eight interrupt sources with four priority levels

Second DPTR register

Low EMI mode (ALE inhibit)

TTL- and CMOS-compatible logic level.

Brown-out detection

Low power modes

Power-down mode with external interrupt wake-up

Idle mode

PDIP40, PLCC44 and TQFP44 packages

Brown-out detection

Low power modes

Power-down mode with external interrupt wake-up

Idle mode



4.1.3 BLOCK DIAGRAM OF P89V51RD2

Fig: 4.1 block dig of microcontroller P89V51RD2



Port 0: Port 0 is an 8-bit open drain bi-directional I/O port. Port 0 pins that have ‘1’s written

to them float, and in this state can be used as high-impedance inputs. Port 0 is also the

multiplexed low-order address and data bus during accesses to external code and data

memory. In this application, it uses strong internal pull-ups when transitioning to ‘1’s.Port 0

also receives the code bytes during the external host mode programming, and outputs the

code bytes during the external host mode verification. External pull-ups are required during

program verifications a general purpose I/O port.

Port 1: Port 1 is an 8-bit bi-directional I/O port with internal pull-ups. The Port 1 pins are

pulled high by the internal pull-ups when ‘1 ’s are written to them and can be used as inputs

in this state. As inputs, Port 1 pins that are externally pulled LOW will source current (IIL)

because of the internal pull-ups. P1.5, P1.6, P1.7 have high current drive of 16 mA. Port 1

also receives the

low-order address bytes during the external host mode programming and verification.

Port 2: Port 2 is an 8-bit bi-directional I/O port with internal pull-ups. Port 2 pins are pulled

HIGH by the internal pull-ups when ‘1’s are written to them and can be used as inputs in this

state. As inputs, Port 2 pins that are externally pulled LOW will source current (IIL) because

of the internal pull-ups. Port 2 sends the high-order address byte during fetches from external

program memory and during accesses to external Data Memory that use 16-bit address

(MOVX@DPTR). In this application, it uses strong internal pull-ups when transitioning to

‘1’s. Port 2 also receives some control signals and a partial of high-order address bits during

the external host mode programming and verification.

Port 3: Port 3 is an 8-bit bidirectional I/O port with internal pull-ups. Port 3 pins are pulled

HIGH by the internal pull-ups when ‘1 ’s are written to them and can be used as inputs in this

state. As inputs, Port 3 pins that are externally pulled LOW will source current (IIL) because

of the internal pull-ups. Port 3 also receives some control signals and a partial of high-order

address bits during the external host mode programming and verification.



RXD: serial input port

TXD: serial output port

INT0: external interrupt 0 input

INT1: external interrupt 1 input

T0: external count input to Timer/Counter 0

T1: external count input to Timer/Counter 1

WR: external data memory write strobe

RD: external data memory read strobe

Program Store Enable: PSEN is the read strobe for external program memory. When the

device

is executing from internal program memory, PSEN is inactive (HIGH). When the device is

executing code from external program memory, PSEN is activated twice each machine cycle,

except that two PSEN activations are skipped during each access to external data memory. A

forced HIGH-to-LOW input transition on the PSEN pin while the RST input is continually

held HIGH for more than 10 machine cycles will cause the device to enter external host

mode programming.

Reset: While the oscillator is running, a HIGH logic state on this pin for two machine cycles

will reset the device. If the PSEN pin is driven by a HIGH-to-LOW input transition while the

RST input pin is held HIGH, the device will enter the external host mode, otherwise the

device will enter the normal operation mode.

External Access Enable: EA must be connected to VSS in order to enable the device to

fetch code from the external program memory. EA must be strapped to VDD for internal

program execution. However, Security lock level 4 will disable EA, and program execution

is only possible from internal program memory. The EA pin can tolerate a high voltage of 12

Address Latch Enable: ALE is the output signal for latching the low byte of the address

during an access to external memory. This pin is also the programming pulse input (PROG)

for flash programming. Normally the ALE is emitted at a constant rate of 1¤6 the crystal



frequency and an be used for external timing and clocking. One ALE pulse is skipped during

each access to external data memory. However, if AO is set to ‘1’,ALE is disabled.

Crystal 1: Input to the inverting oscillator amplifier and input to the internal clock generator

circuits.

Crystal 2: Output from the inverting oscillator amplifier.

4.1.4 FUNCTIONAL DESCRIPTION

Memory organization

The device has separate address spaces for program and data memory.

Flash program memory

There are two internal flash memory blocks in the device. Block 0 has 64 Kbytes and

contains the user ’s code. Block 1 contains the Philips -provided ISP/IAP routines and may

be enabled such that it overlays the first 8 Kbytes of the user code memory. The 64 kB Block

0 is organized as 512 sectors, each sector consists of 128 bytes. Access to the IAP routines

may be enabled by clearing the BSEL bit in the FCF register. However, caution must be

taken when dynamically changing the BSEL bit. Since this will cause different physical

memory to be mapped to the logical program address space, the user must avoid clearing the

BSEL bit when executing user code within the address range 0000H to 1FFFH.

Data RAM memory

The data RAM has 1024 bytes of internal memory. The device can also address up to 64 kB

for external data memory.

Expanded data RAM addressing

The P89V51RD2 has 1 kB of RAM.

The device has four sections of internal data memory:

1. The lower 128 bytes of RAM (00H to 7FH) are directly and indirectly addressable.

2. The higher 128 bytes of RAM (80H to FFH) are indirectly addressable.

3. The special function registers (80H to FFH) are directly addressable only.



4. The expanded RAM of 768 bytes (00H to 2FFH) is indirectly addressable by the move

external instruction (MOVX) and clearing the EXTRAM bit Since the upper 128 bytes

occupy

the same addresses as the SFRs, the RAM must be accessed indirectly. The RAM and SFRs

space are physically separate even though they have the same addresses.

Flash organization

The P89V51RD2 program memory consists of a 64 kB block. An In-System Programming

(ISP) capability, in a second 8 kB block, is provided to allow the user code to be

programmed in-circuit through the serial port. There are three methods of erasing or

programming of the Flash memory that may be used. First, the Flash may be programmed or

erased in the end-user application by calling low-level routines through a common entry

point (IAP). Second, the on-chip ISP boot loader may be invoked. This ISP boot loader will,

in turn, call low-level routines through the same common entry point that can be used by the

end-user application. Third, the Flash may be programmed or erased using the parallel

method by using a commercially available EPROM programmer which supports this device.

Boot block

When the microcontroller programs its own Flash memory, all of the low level details are

handled by code that is contained in a Boot block that is separate from the user Flash

memory. A

user program calls the common entry point in the Boot block with appropriate parameters to

accomplish the desired operation. Boot block operations include erase user code, program

user code, program security bits, etc. A Chip-Erase operation can be performed using a

commercially available parallel programer. This operation will erase the contents of this Boot

Block and it will be necessary for the user to reprogram this Boot Block (Block 1) with the

Philips-provided ISP/IAP code in order to use the ISP or IAP capabilities of this device.



Power-On reset code execution

Following reset, the P89V51RD2 will either enter the Soft ICE mode (if previously enabled

via ISP command) or attempt to auto baud to the ISP boot loader. If this auto baud is not

successful within about 400 ms, the device will begin execution of the user code.

In-System Programming (ISP)

In-System Programming is performed without removing the microcontroller from the system.

The In-System Programming facility consists of a series of internal hardware resources

coupled with internal firmware to facilitate remote programming of the P89V51RD2 through

the serial port. This firmware is provided by Philips and embedded within each P89V51RD2

device. The Philips In-System Programming facility has made in-circuit programming in an

embedded application possible with a minimum of additional expense in components and

circuit board area.

The ISP function uses five pins (VDD, VSS, TxD, RxD, and RST). Only a small connector

needs to be available to interface your application to an external circuit in order to use this

feature.

Using the In-System Programming

The ISP feature allows for a wide range of baud rates to be used in your application,

independent of the oscillator frequency. It is also adaptable to a wide range of oscillator

frequencies. This is accomplished by measuring the bit-time of a single bit in a received

character. This information is then used to program the baud rate in terms of timer counts

based on the oscillator frequency. The ISP feature requires that an initial character (an

uppercase U) be sent to the P89V51RD2 to establish the baud rate. The ISP firmware

provides auto-echo of received characters. Once baud rate initialization has been performed,

the ISP firmware will only accept Intel Hex-type records. In the Intel Hex record, the ‘NN’

represents the number of data bytes in the record. The P89V51RD2 will accept up to 32 data

bytes. The ‘AAAA ’string represents the address of the first byte in the record. If there are

zero bytes in the record, this field is often set to 0000. The ‘RR ’string indicates the record

type. A record type of ‘00 ’ is a data record. A record type of ‘01’ indicates the end-of-file



mark. In this application, additional record types will be added to indicate either commands

or data for the ISP facility. The maximum number of data bytes in a record is limited to 32

(decimal). As a record is received by the P89V51RD2, the information in the record is stored

internally and a checksum calculation is performed. The operation indicated by the record

type is not performed until the entire record has been received. Should an error occur in the

checksum, the P89V51RD2 will send an ‘X ’ out the serial port indicating a checksum error.

If the checksum calculation is found to match the checksum in the record, then the command

will be executed. In most cases, successful reception of the record will be indicated

by transmitting a ‘.’ character out the serial port.



4.2 RS232

RS-232 is a telecommunications standard for connecting certain types of electronic

equipment. In computer networking, RS-232 cables were commonly used to connect

modems to the compatible serial ports of personal computers. So-called null modem cables

could also be connected directly between the RS-232 ports of two computers to create a

simple network interface suitable for transferring files. Today, most uses of RS-232 in

computer networking have been replaced by USB technology. Some computers and network

routers possess RS-232 ports to support modem connections. RS-232 also continues to be

used in some industrial devices, including newer fiber optic cable and wireless

implementations.

Fig: 4.2 pin dig of RS232

RS232 works at the physical level so you will know what signals you can expect to see at

the microcontroller pins. It is a method (or protocol - an agreed standard) that defines how to

transfer data between two devices using a few wires. It uses a serial transmission method

where bytes of data are output one bit at a time onto a single wire. Data is only transmitted


http://compnetworking.about.com/cs/routers/g/bldef_router.htm

http://compnetworking.about.com/cs/routers/g/bldef_router.htm

http://compnetworking.about.com/cs/cabling/g/bldef_usb.htm

http://compnetworking.about.com/od/networkcables/g/bldefnullmodem.htm

http://compnetworking.about.com/od/modems/g/bldefserialport.htm


in one direction for each wire so for bi-directional communication (two directions) you need

two wires These two along with a ground reference (total: three wires) make up the minimum

configuration that you can get away with. More formally RS232 is an

asynchronous communication protocol that lets you transfer data between electronic devices.

Basically it can transfer a single byte of data over a serial cable having between 3 to

22 signals and running at speeds from 100 to 20k baud. Common baud rates used are 2.4k,

9.6k, 19.2k, The cable length can be up to 50ft. Higher baud rates are used but not covered

by the standard they still work though e.g. 38400,57600 Baud (bits/s). To transfer a block of

data individual bytes are transmitted one after another. This section describes how RS232

works in general without describing complex handshake methods - only the simplest system

is described this it the most useful and the most likely to work!. Data is transmitted serially

in one direction over a pair of wires. Data going out is labeled Tx (indicating transmission)

while data coming in is labeled Rx (indicating reception). To create a two

way communication system a minimum of three wires are needed Tx, Rx and GND (ground).

Crossing over Tx & Rx between the two systems lets each unit talk to the opposite one. Each

byte can be transmitted at any time (as long as the previous byte has been transmitted). The

transmitted byte is not synchronized to the receiver - it is an asynchronous protocol i.e. there

is no clock signal. For this reason software at each end of the communication link must be set

up exactly the same so that each serial decoder chip can decode the serial data stream.

Fig: 4.3 RS232



4.3 MAX 232

The MAX232 IC is used to convert the TTL/CMOS logic levels to RS232 logic levels during

serial communication of microcontrollers with PC. The controller operates at TTL logic level

(0-5V) whereas the serial communication in PC works on RS232 standards (-25 V to + 25V).

This makes it difficult to establish a direct link between them to communicate with each

other. The intermediate link is provided through MAX232. It is a dual driver/receiver that

includes a capacitive voltage generator to supply RS232 voltage levels from a single 5V

supply. Each receiver converts RS232 inputs to 5V TTL/CMOS levels. These receivers

(R1 & R2) can accept ±30V inputs. The drivers (T1 & T2), also called transmitters, convert the

TTL/CMOS input level into RS232 level.

Fig: 4.4 pin dig of max232

The MAX232 is an IC, first created in 1987 by Maxim Integrated Products, that converts

signals from an RS-232 serial port to signals suitable for use in TTL compatible digital logic

circuits. The MAX232 is a dual driver/receiver and typically converts the RX, TX, CTS and

RTS signals. The drivers provide RS-232 voltage level outputs (approx. ± 7.5 V) from a

single + 5 V supply via on-chip charge pumps and external capacitors. This makes it useful


http://en.wikipedia.org/wiki/Charge_pump

http://en.wikipedia.org/wiki/Volt

http://en.wikipedia.org/wiki/Transistor-transistor_logic

http://en.wikipedia.org/wiki/RS-232

http://en.wikipedia.org/wiki/Maxim_Integrated_Products


for implementing RS-232 in devices that otherwise do not need any voltages outside the 0 V

to + 5 V range, as power supply design does not need to be made more complicated just for

driving the RS-232 in this case. The receivers reduce RS-232 inputs (which may be as high

as ± 25 V), to standard 5 V TTL levels. These receivers have a typical threshold of 1.3 V,

and a typical hysteresis of 0.5 V. The later MAX232A is backwards compatible with the

original MAX232 but may operate at higher baud rates and can use smaller external

capacitors – 0.1 μF in place of the 1.0 μF capacitors used with the original device. The newer

MAX3232 is also backwards compatible, but operates at a broader voltage range, from 3 to

5.5 V.Pin-to-pin compatible versions from other manufacturers are ICL232, ST232,

ADM232 and HIN232.It is helpful to understand what occurs to the voltage levels. When a

MAX232 IC receives a TTL level to convert, it changes a TTL logic 0 to between +3 and

+15 V, and changes TTL logic 1 to between -3 to -15 V, and vice versa for converting from

RS232 to TTL. This can be confusing when you realize that the RS232 data transmission

voltages at a certain logic state are opposite from the RS232 control line voltages at the same

logic state. To clarify the matter, see the table below. For more information,. The

MAX232(A) has two receivers (converts from RS-232 to TTL voltage levels), and two

drivers (converts from TTL logic to RS-232 voltage levels). This means only two of the RS-

232 signals can be converted in each direction. Typically, a pair of a driver/receiver of the

MAX232 is used for TX and RX signals, and the second one for CTS and RTS signals, There

are not enough drivers/receivers in the MAX232 to also connect the DTR, DSR, and DCD

signals. Usually these signals can be omitted when e.g. communicating with a PC's serial

interface. If the DTE really requires these signals, either a second MAX232 is needed, or

some other IC from the MAX232 family can be used. Also, it is possible to directly wire

DTR (DB9 pin #4) to DSR (DB9 pin #6) without going through any circuitry. This gives

automatic (brain dead) DSR acknowledgment of an incoming DTR signal.


http://en.wikipedia.org/wiki/Farad

http://en.wikipedia.org/wiki/Baud

http://en.wikipedia.org/wiki/Transistor-transistor_logic

http://en.wikipedia.org/wiki/Power_supply


Fig: 4.5 image of max232

Fig:4.6 Interface between rs232 and max232

Several devices collect data from sensors and need to send it to another unit, like a computer,

for further processing. Data transfer/communication is generally done in two ways: parallel

and serial. In the parallel mode, data transfer is fast and uses more number of lines. This

mode is good for short range data transfer. Serial communication on the other hand, uses



only one or two data lines to transfer data and is generally used for long distance

communication. In serial communication the data is sent as one bit at a time. This article

describes the interfacing of 8051 microcontroller with a computer via serial port, RS232.

Serial communication is commonly used in applications such as industrial automation

systems, scientific analysis and certain consumer products. Works with 5V and 3.3V Power

This converter provides two way RS232 serial communications signal conversion between

the TTL (Transistor Transistor Logic) output to and from a personal computer RS232 serial

COM port. This converter can be used on any Micro controller - PIC, Atmel or other which

has TTL serial communications that needs to be converted to RS232. The 3 pin jumper

selects power from the PC or an external power source. If you use External Power on Vcc

this must NOT exceed +5 VOLTS and the JUMPER must be removed. (c) Sigma-Shop.com

All rights reserved. When you want to use the MAX232 you have to connect the RX to the

TX of the device, and the TX of the MAX232 to the RX of the device. The only way to make

the MAX works, the lines between the device and the MAX must be crossed.

Fig: 4.7 Interface between rs232 and max232 and microcontroller


http://www.engineersgarage.com/articles/what-is-rs232

http://www.engineersgarage.com/8051-microcontroller


4.4 PIR (Pyro electric Infrared Radial) sensor

Compact and complete, easy to use Piezoelectric Infrared (PIR) Sensor Module for human

body detection. Incorporating a Fresnel lens and motion detection circuit, suitable for a wide

range of supply voltages and with low current drain. High sensitivity and low noise. Output

is a standard TTL active low output signal indicated by on board LED. The PIR (Passive

Infra-Red) Sensor is a piezoelectric device that detects motion by measuring changes in the

infrared levels emitted by surrounding objects. This motion can be detected by checking for a

high signal on a single I/O pin. Module provides an optimized circuit that will detect motion

up to 6 meters away and can be used in burglar alarms and access control systems. The PIR

sensor and Fresnel lens are fitted onto the PCB. This enables the board to be mounted inside

a case with the detecting lens protruding outwards, whilst still allowing easy access to the

controls inside the case.



Fig 4.8 PIR sensor

PIR sensors allow you to sense motion, almost always used to detect whether a human has

moved in or out of the sensors range. They are small, inexpensive, low-power, easy to use

and don't wear out. For that reason they are commonly found in appliances and gadgets used

in homes or businesses. They are often referred to as PIR, "Passive Infrared", "Piezoelectric",

or "IR motion" sensors

Fig: 4.9 image of PIR sensors

PIR sensors allow you to sense motion, almost always used to detect whether a human has

moved in or out of the sensors range. They are small, inexpensive, low-power, easy to use

and don't wear out. For that reason they are commonly found in appliances and gadgets used

in homes or businesses. They are often referred to as PIR, "Passive Infrared", "Piezoelectric",

or "IR motion" sensors. PIRs are basically made of a piezoelectric sensor (which you can see

above as the round metal can with a rectangular crystal in the center), which can detect levels

of infrared radiation. Everything emits some low level radiation, and the hotter something is,

the more radiation is emitted. The sensor in a motion detector is actually split in two halves.

The reason for that is that we are looking to detect motion (change) not average IR levels.

The two halves are wired up so that they cancel each other out. If one half sees more or less

IR radiation than the other, the output will swing high or low. Along with the pyroelectic

sensor is a bunch of supporting circuitry, resistors and capacitors. It seems that most small

hobbyist sensors use the BISS0001 ("Micro Power PIR Motion Detector IC"), undoubtedly a


http://www.ladyada.net/media/sensors/BISS0001.pdf

http://en.wikipedia.org/wiki/Pyroelectric


very inexpensive chip. This chip takes the output of the sensor and does some minor

processing on it to emit a digital output pulse from the analog sensor. For many basic

projects or products that need to detect when a person has left or entered the area, or has

approached, PIR sensors are great. They are low power and low cost, pretty rugged, have a

wide lens range, and are easy to interface with. Note that PIRs won't tell you how many

people are around or how close they are to the sensor, the lens is often fixed to a certain

sweep and distance (although it can be hacked somewhere) and they are also sometimes set

off by house pets. Experimentation is key!

4.5 GSM

GSM is widely used mobile communication architecture used in most of the countries. This

project demonstrates the interfacing of microcontroller with HyperTerminal and GSM

module. It aims to familiarize with the syntax of AT Commands and their Information

Response and Result Codes. The ASCII values of characters in the Information Response,

Result Codes and their syntax can be monitored by an LED array. For the basic concepts,

working and operation of AT commands and GSM module refer GSM/GPRS Module. A

GSM modem works by using a SIM card or SIM card operated device, such as a cellular

phone that provides Internet access through the mobile phone carrier. The GSM modem, or

cell phone is connected to a computer or laptop, and provides connectivity just as any other

modem would. It has a specific interface that is used to send and receive signals and

messages, and is typically used for mobile web connection. Many people who work on the

road use a GSM modem to connect to the Internet from various locations. This keeps them

from having to look for Wi-Fi hot spots, or other forms of connectivity. GSM was designed

with a moderate level of service security. The system was designed to authenticate the

subscriber using a pre-shared key and challenge-response. Communications between the

subscriber and the base station can be encrypted. The development of UMTS introduces an

optional Universal Subscriber Identity Module (USIM), that uses a longer authentication key

to give greater security, as well as mutually authenticating the network and the user, whereas

GSM only authenticates the user to the network (and not vice versa). The security model

therefore offers confidentiality and authentication, but limited authorization capabilities, and

no non-repudiation. GSM (Global System for Mobile Communications, originally Groupe


http://en.wikipedia.org/wiki/Non-repudiation

http://en.wikipedia.org/wiki/Universal_Subscriber_Identity_Module

http://en.wikipedia.org/wiki/Universal_Mobile_Telecommunications_System

http://en.wikipedia.org/wiki/Challenge-response_authentication

http://en.wikipedia.org/wiki/Pre-shared_key

http://www.engineersgarage.com/articles/gsm-gprs-modules

http://www.engineersgarage.com/tutorials/at-commands


Spécial Mobile), is a standard developed by the European Telecommunications Standards

Institute(ETSI) to describe protocols for second generation (2G) digital cellular

networks used by mobile phones. It is the de facto global standard for mobile

communications with over 90% market share, and is available in over 219 countries and

territories. The GSM standard was developed as a replacement for first generation (1G)

analog cellular networks, and originally described a digital, circuit-switched network

optimized for full voice telephony. This was expanded over time to include data

communications, first by circuit-switched transport, then packet data transport

via GPRS (General Packet Radio Services) and EDGE (Enhanced Data rates for GSM

Evolution or EGPRS).

Subsequently, the 3GPP developed third generation (3G) UMTS standards followed by

fourth generation (4G) LTE Advanced standards, which are not part of the ETSI GSM

standard. "GSM" is a trademark owned by the GSM Association. It may also refer to the

initially most common voice codec used, Full Rate. AT- Attention, used to start a command

line.

Fig: 4.10 GSM


http://en.wikipedia.org/wiki/Full_Rate

http://en.wikipedia.org/wiki/GSM_Association

http://en.wikipedia.org/wiki/Trademark

http://en.wikipedia.org/wiki/LTE_Advanced

http://en.wikipedia.org/wiki/4G

http://en.wikipedia.org/wiki/UMTS


http://en.wikipedia.org/wiki/3GPP

http://en.wikipedia.org/wiki/EDGE

http://en.wikipedia.org/wiki/GPRS

http://en.wikipedia.org/wiki/Network_packet

http://en.wikipedia.org/wiki/Telephony


http://en.wikipedia.org/wiki/Mobile_phone

http://en.wikipedia.org/wiki/Cellular_network

http://en.wikipedia.org/wiki/Cellular_network


http://en.wikipedia.org/wiki/European_Telecommunications_Standards_Institute

http://en.wikipedia.org/wiki/European_Telecommunications_Standards_Institute


Fig: 4.11 Layout of GSM

4.6 WIRELESS CAMERA

Wireless security cameras are closed-circuit television (CCTV) cameras that transmit a video

and audio signal to a wireless receiver through a radio band. Many wireless security cameras

require at least one cable or wire for power; "wireless" refers to the transmission of

video/audio. However, some wireless security cameras are battery-powered, making the

cameras truly wireless from top to bottom. Wireless cameras are proving very popular among

modern security consumers due to their low installation costs (there is no need to run

expensive video extension cables) and flexible mounting options; wireless cameras can be

mounted/installed in locations previously unavailable to standard wired cameras. In addition

to the ease of use and convenience of access, wireless security camera allows users to

leverage broadband wireless internet to provide seamless internet. Analog wireless is the

transmission of audio and video signals using radio frequencies. Typically, analog wireless

has a transmission range of around 300 feet (91 meters) in open space; walls, doors, and

furniture will reduce this range. Analog wireless is found in three frequencies: 900 MHz,

2.4 GHz, and 5.8 GHz. Currently, the majority of wireless security cameras operates on the


http://en.wikipedia.org/wiki/Video_camera

http://en.wikipedia.org/wiki/Closed-circuit_television


2.4 GHz frequency. Most household routers, cordless phones, video game controllers, and

microwaves operate on the 2.4 GHz frequency and may cause interference with your wireless

security camera. 900 MHz is known as Wi-Fi Friendly because it will not interfere with the

Internet signal of your wireless network

4.6.1 Advantages:

Cost effective: the cost of individual cameras is low.

Multiple receivers per camera: the signal from one camera can be picked up by any

receiver; you can have multiple receivers in various locations to create your wireless

surveillance network

4.6.2 Disadvantages:

Susceptible to interference from other household devices, such as microwaves,

cordless phones, video game controllers, and routers.

No signal strength indicator: there is no visual alert (like the bars on a cellular phone)

indicating the strength of your signal.

Susceptible to interception: because analog wireless uses a consistent frequency, it is

possible for the signals to be picked up by other receivers.

One-way communication only: it is not possible for the receiver to send signals back

to the camera.

Digital wireless is the transmission of audio and video analog signals encoded as digital

packets over high-bandwidth radio frequencies. Wireless security cameras are becoming

more and more popular in the consumer market, being a cost-effective way to have a

comprehensive surveillance system installed in a home or business for an often less

expensive price. Wireless cameras are also ideal for people renting homes or apartments.

Since there is no need to run video extension cables through walls or ceilings (from the

camera to the receiver or recording device) one does not need approval of a landlord to install

a wireless security camera system. Additionally, the lack of wiring allows for less "clutter,"

avoiding damage to the look of a building. A wireless security camera is also a great option

for seasonal monitoring and surveillance. For example, one can observe a pool or patio in


http://en.wikipedia.org/wiki/Digital_video


summer months and take down the camera in the winter. Wireless security cameras function

best when there is a clear line of sight between the camera(s) and the receiver. Outdoors, and

with clear line of sight, digital wireless cameras typically have a range between 250 to 450

feet. Indoors, the range can be limited to 100 to 150 feet. Cubical walls, drywall, glass, and

windows generally do not degrade wireless signal strength. Brick, concrete floors, and walls

degrade signal strength. Trees that are in the line of sight of the wireless camera and receiver

may impact signal strength. the signal range also depends on whether there are competing

signals using the same frequency as the camera. For example, signals from cordless phones

or routers may affect signal strength. When this happens, the camera image may freeze, or

appear "choppy". Typical solution involves locking the channel that wireless router operates

on. Wireless cameras are basically described as a wireless transmitter carrying a camera

signal. The Camera is wired to a wireless transmitter and the signal travels between the

camera and the receiver. This works much like radio. The sound you hear on a radio is

transmitted wirelessly and you tune to a certain frequency and hear the sound. Wireless

cameras have a channel also. The receiver has channels to tune in and then you get the

picture. The wireless camera picture is sent by the transmitter the receiver collects this signal

and outputs it to your Computer OR TV Monitor depending on the receiver type.


http://www.spyville.com/wirhidcam.html


Fig:4.12 wireless camera



Fig:4.13 working of wireless camera

Fig:4.14 signals transfer in wireless camera



4.7 LCD DISPLAY

We always use devices made up of Liquid Crystal Displays (LCDs) like computers, digital

watches and also DVD and CD players. They have become very common and have taken a

giant leap in the screen industry by clearly replacing the use of Cathode Ray Tubes (CRT).

CRT draws more power than LCD and are also bigger and heavier. All of us have seen an

LCD, but no one knows the exact working of it. Let us take a look at the working of an LCD.

We get the definition of LCD from the name “Liquid Crystal” itself. It is actually a

combination of two states of matter – the solid and the liquid. They have both the properties

of solids and liquids and maintain their respective states with respect to another. Solids

usually maintain their state unlike liquids who change their orientation and move everywhere

in the particular liquid. Further studies have showed that liquid crystal materials show more

of a liquid state than that of a solid. It must also be noted that liquid crystals are more heat

sensitive than usual liquids. A little amount of heat can easily turn the liquid crystal into a

liquid. This is the reason why they are also used to make thermometers.

4.7.1 Basics of LCD Displays

The liquid-crystal display has the distinct advantage of having a low power consumption than

the LED. It is typically of the order of microwatts for the display in comparison to the some

order of mill watts for LEDs. Low power consumption requirement has made it compatible

with MOS integrated logic circuit. Its other advantages are its low cost, and good contrast.

The main drawbacks of LCDs are additional requirement of light source, a limited

temperature range of operation (between 0 and 60° C), low reliability, short operating life,

poor visibility in low ambient lighting, slow speed and the need for an ac drive.

4.7.2 Basic structure of an LCD

A liquid crystal cell consists of a thin layer (about 10 u m) of a liquid crystal sandwiched

between two glass sheets with transparent electrodes deposited on their inside faces. With

both glass sheets transparent, the cell is known as transitive type cell. When one glass is


http://www.circuitstoday.com/lcd-liquid-crystal-displays


transparent and the other has a reflective coating, the cell is called reflective type. The LCD

does not produce any illumination of its own. It, in fact, depends entirely on illumination

falling on it from an external source for its visual effect

4.7.3 Making of LCD

Though the making of LCD is rather simple there are certain facts that should be

noted while making it.

The basic structure of an LCD should be controllably changed with respect to the

applied electric current.

The light that is used on the LCD can be polarized.

Liquid crystals should be able to both transmit and change polarized light.

There are transparent substances that can conduct electricity.

To make an LCD, you need to take two polarized glass pieces. The glass which does not

have a polarized film on it must be rubbed with a special polymer which creates microscopic

grooves in the surface. It must also be noted that the grooves are on the same direction as the

polarizing film. Then, all you need to do is to add a coating of pneumatic liquid crystals to

one of the filters. The grooves will cause the first layer of molecules to align with the filter’s

orientation. At right angle to the first piece, you must then add a second piece of glass along

with the polarizing film. Till the uppermost layer is at a 90-degree angle to the bottom, each

successive layer of TN molecules will keep on twisting. The first filter will naturally be

polarized as the light strikes it at the beginning. Thus the light passes through each layer and

is guided on to the next with the help of molecules. When this happens, the molecules tend to

change the plane of vibration of the light to match their own angle. When the light reaches

the far side of the liquid crystal substance, it vibrates at the same angle as the final layer of

molecules. The light is only allowed an entrance if the second polarized glass filter is same as

the final layer. Take a look at the figure below.



Fig: 4.15 working of LCD

The main principle behind liquid crystal molecules is that when an electric current is applied

to them, they tend to untwist. This causes a change in the light angle passing through them.

This causes a change in the angle of the top polarizing filter with respect to it. So little light is

allowed to pass through that particular area of LCD. Thus that area becomes darker

comparing to others. For making an LCD screen, a reflective mirror has to be setup in the

back. An electrode plane made of indium-tin oxide is kept on top and a glass with a

polarizing film is also added on the bottom side. The entire area of the LCD has to be

covered by a common electrode and above it should be the liquid crystal substance. Next

comes another piece of glass with an electrode in the shape of the rectangle on the bottom

and, on top, another polarizing film. It must be noted that both of them are kept at right

angles. When there is no current, the light passes through the front of the LCD it will be

reflected by the mirror and bounced back. As the electrode is connected to a temporary

battery the current from it will cause the liquid crystals between the common-plane electrode



and the electrode shaped like a rectangle to untwist. Thus the light is blocked from passing

through. Thus that particular rectangular area appears blank.

4.7.4 Color Liquid Crystal Display

Color LCDs are those that can display pictures in colors. For this to be possible there must be

three sub-pixels with red, green and blue color filters to create each color pixel. For

combining these sub-pixels these LCDs should be connected to a large number of transistors.

If any problem occurs to these transistors, it will cause a bad pixel. One of the main

disadvantages of these types of LCDs is the size. Most manufacturers try to reduce the height

than gain it. This is because more transistors and greater pixels will be needed to increase the

length. This will increase the probability of bad pixels. It is very difficult or also impossible

to repair a LCD with bad pixels. This will highly affect the sale of LCDs.

Fig 4.16 Image of LCD display



4.8 BUZZER

A buzzer is an audio device that may be electromechanical, mechanical or piezoelectric.

Buzzers are used in timers, alarms and confirmation of user inputs such as a keystroke. It is

also known as a beeper. Piezo buzzer is an electronic device commonly used to produce

sound. Light weight, simple construction and low price make it usable in various applications

like car/truck reversing indicator, computers, call bells etc. It is the phenomena of generating

electricity when mechanical pressure is applied to certain materials and the vice versa is also

true. Such materials are called Piezo electric materials. Buzzers work in much the same way

that a switch works. When the electrical circuit is completed the buzzer will sound. When the

circuit is broken the buzzer stops. A buzzer works by using a magnetic coil which is attached

to the electrical circuit, and an metal contact. There is a mechanical arm which moves when a

button is pressed completing the circuit and causing a buzzing sound. A joy buzzer is an

example of a purely mechanical buzzer Early devices were based on an electromechanical

system identical to an electric bell without the metal gong. Similarly, a relay may be

connected to interrupt its own actuating current, causing the contacts to buzz. Often these

units were anchored to a wall or ceiling to use it as a sounding board. The word "buzzer"

comes from the rasping noise that electromechanical buzzers made. A piezoelectric element

may be driven by an oscillating electronic circuit or other audio signal source, driven with

a piezoelectric audio amplifier. Sounds commonly used to indicate that a button has been

pressed are a click, a ring or a beep.

4.8.1 Applications

Annunciate panels

Electronic metronomes

Game shows

Microwave ovens and other household appliances


http://en.wikipedia.org/wiki/Major_appliance

http://en.wikipedia.org/wiki/Microwave_oven

http://en.wikipedia.org/wiki/Game_show

http://en.wikipedia.org/wiki/Metronome

http://en.wikipedia.org/wiki/Annunciator_panel

http://en.wikipedia.org/wiki/Piezoelectric_audio_amplifier

http://en.wikipedia.org/wiki/Audio_signal

http://en.wikipedia.org/wiki/Oscillation

http://en.wikipedia.org/wiki/Switch

http://en.wikipedia.org/wiki/Electric_current

http://en.wikipedia.org/wiki/Relay

http://en.wikipedia.org/wiki/Electric_bell

http://en.wikipedia.org/wiki/Joy_buzzer


Sporting events such as basketball games

Electrical alarms

Fig: 4.17 Electronic symbol for a buzzer

Fig: 4.18 buzzer

4.9 POWER SUPPLY

Here in this system simple 9-12V battery is connected with the transmitting end as well as

receiving end. Since microcontroller which is the CPU works on regulated +5V power supply

so this can be achieved by connecting a +5V volt regulator at the output of battery.

An AC powered unregulated power supply usually uses a transformer to convert the voltage

from the wall outlet (mains) to a different, nowadays usually lower, voltage. If it is used to

produce DC, a rectifier is used to convert alternating voltage to a pulsating direct voltage,


http://en.wikipedia.org/wiki/Rectifier

http://en.wikipedia.org/wiki/Direct_current

http://en.wikipedia.org/wiki/Transformer

http://en.wikipedia.org/wiki/Alternating_current

http://en.wikipedia.org/wiki/Alarms

http://en.wikipedia.org/wiki/Basketball

http://en.wikipedia.org/wiki/Sport


followed by a filter, comprising one or more capacitors, resistors, and sometimes inductors,

to filter out (smooth) most of the pulsation. A small remaining unwanted alternating voltage

component at mains or twice mains power frequency(depending upon whether half- or full-

wave rectification is used)—ripple—is unavoidably superimposed on the direct output

voltage.

A power supply that is built into an AC mains power plug is known as a "plug pack" or

"plug-in adapter", or by slang terms such as "wall wart". They are even more diverse than

their names; often with either the same kind of DC plug offering different voltage or polarity,

or a different plug offering the same voltage. "Universal" adapters attempt to replace missing

or damaged ones, using multiple plugs and selectors for different voltages and polarities.

Replacement power supplies must match the voltage of, and supply at least as much current

as, the original power supply.

Fig: 4.19 Adopter


http://en.wikipedia.org/wiki/Polarity_symbols

http://en.wikipedia.org/wiki/Polarity_symbols

http://en.wikipedia.org/wiki/DC_connector

http://en.wikipedia.org/wiki/Domestic_AC_power_plugs_and_sockets

http://en.wikipedia.org/wiki/Ripple_(electrical)

http://en.wikipedia.org/wiki/Utility_frequency

http://en.wikipedia.org/wiki/Inductor

http://en.wikipedia.org/wiki/Resistor

http://en.wikipedia.org/wiki/Capacitor

http://en.wikipedia.org/wiki/Electronic_filter


CHAPTER 5

SOFTWARE IMPLEMENTATION

5.1 KEIL development tool

Keil complier is the software used where the machine language code is written and complied.

After compilation, the machine source code is converted into hex code which is to be

dumped into the microcontroller for the further processing. KEIL software provides the ease

of writing the code in either c or assembly. Keil u vision 3 IDE (integrated development

environment) is a windows based front end for the project management, source code editing

and program debugging. Standard libraries are altered or enhanced to address the

peculiarities of an embedded target processor. It acts as a CROSS-COMPLIER

5.2 EMBEDDED C

The C programming language is a general-purpose programming language that provides code

efficiency, elements of structured programming and rich set of operators. Its generality

combined with its absence of restrictions, makes C a convenient and effective programming

solutions for a wide variety of software tasks. Many applications can be solved more easily

and efficiently with C than with other more specialized languages. Embedded C is a set of

language extensions for the c programming language by the c standards committee to address

commonality issues that exit between C extension=s for different embedded systems.

Historically, embedded C programming requires non standard extensions to the C language

in order to support exotic features such as fixed-point arithmetic, multiple distinct memory

banks. And basic I/O operations



5.3 Flash magic

This is a tool from Philips for programming the controllers that are flash programmable and

that supports serial programming of devices. Flash microcontrollers can be erased and re-

written as many times as possible. The boot loader inside the chip understands the protocol

received from computer through serial port. Flash magic identities the hardware when the

controller can be now either read back or sent as INTEL format HEX file. Support locking of

devices can be done to prevent reading back of programmed chip. After looking the chip can

still be erased and used again for loading new programs.

5.3.1 Features

Support major Philips devices

Lock of programs in chip supported to prevent program copying

Auto erase before writing and auto verify after writing

Informative status bar and access to latest programmed file

Simple and easy to use



CHAPTER 6

ADVANTAGES & DISADVANTAGES

6.1ADVANTAGES

No dedicated web server required

Our cloud connected home automation network doesn’t require a dedicated web

server, to be remotely controlled and monitored over the Internet, whereas ordinary

Internet enabled home automation network require a 24/7 running web server.

Furthermore, every mere Internet enabled home automation system would require a

static public IP address for the web server.

No dedicated or specialized gateway required

Our home automation network doesn’t require a dedicated or specialized gateway to

connect to an external network because the communication base of the network is

Internet Protocol, which can be directly connected to the Internet. Our choice of

using 802.11n standard enables us to form this IP network.

Resource Sharing

Resources in the cloud are being shared among all users. For example, a single SMS

modem is serving to notify all users in case of intrusion event. This type of resource

sharing reduces cost and saves energy.

Location Awareness



The location of each node helps the cloud services to stealthily alert the accurate

neighbors (who are using our home automation system) or local police, in an event of

genuine intrusion.

Remote Control & Monitoring

The security surveillance system can be controlled and monitored in real-time, from

anywhere, via the Internet.

Social Interaction

Since all users are using a central cloud service, we easily locate and contact the

neighbors who are also using our cloud based home automation system.

6.2 DISADVANTAGES

Technical issue

Security in cloud

Prone to attack



CHAPTER 7

DESIGN OF PROJECT



Fig: 7.1 Design of project circuit



PROGRAM CODE

#include<reg51.h>#include"prototypes.h"

sbit CAMERA=P2^4; // leds and port pins connectionsbit BUZZER=P2^6;sbit PIR=P2^1;

void GPRS_INIT();

unsigned char res;

void uart_init(){

TMOD=0x20;TH1=0xFD;SCON=0x50;TR1=1;

}

void uart_tx(unsigned char text){

SBUF = text; while(TI==0); TI=0;

}

unsigned char RX_DATA(){

unsigned char a; while(RI==0); a = SBUF; RI=0; return(a);

}

void TX_STRING(unsigned char *text){

while(*text!='\0'){

uart_tx(*text++);}

}

void Gsm_Del_Msg(){

TX_STRING("AT+CMGD=1,4");uart_tx(0X0A);



uart_tx(0X0D);

lcdcmd(0x01);lcdcmd(0xc0);lcddata('*'); //shows message deleted

}

void Gsm_Init(){

TX_STRING("AT"); //attention commanduart_tx(0X0A);

uart_tx(0X0D);//charecters not

echoedTX_STRING("ATE0");uart_tx(0X0A);

uart_tx(0X0D);

TX_STRING("AT+CNMI=2,1,0,0,0");uart_tx(0X0A);

uart_tx(0X0D);

TX_STRING("AT+CMGF=1"); //set text modeuart_tx(0X0A);

uart_tx(0X0D);

TX_STRING("AT&W"); //modification saving in eeprom

uart_tx(0X0A); uart_tx(0X0D);}

void main(){// unsigned char count,i,a[3];

lcdinit();uart_init();

CAMERA=0;BUZZER=0;lcdcmd(0xc0);lcddata('*'); //shows message deletedGsm_Del_Msg();Gsm_Init();

lcdcmd(0x01);lcd_string(" HOME SECURITY"); //display on lcddelay(50);lcdcmd(0xC5);lcd_string("SYSTEM");delay(50);



while(1){

if(PIR==1){

CAMERA=1;BUZZER=1;lcdcmd(0x01);lcd_string(" SMS"); TX_STRING("AT+CMGS=\"9886380306\""); // change

9886380306uart_tx(0X0A);

uart_tx(0X0D);while(RX_DATA() != '>');TX_STRING("SOMEONE HAS ENTERED YOUR HOME");uart_tx(0X1A);lcdcmd(0x01);lcd_string(" SMS sent..");delay(500);BUZZER=0;

GPRS_INIT();

TX_STRING("AT+TCPSEND=0,8");uart_tx(0X0A);

uart_tx(0X0D);while(RX_DATA() != '>');lcdcmd(0x01);lcd_string("AT+TCPSEND");TX_STRING("1$2$3$4$");while(RX_DATA() != 'K');lcdcmd(0x01);lcd_string("MESSAGE SENT..");

while(1);}

}}

void GPRS_INIT() {

TX_STRING("AT");uart_tx(0X0A);uart_tx(0X0D);while(RX_DATA() != 'K');lcdcmd(0x01);lcd_string("AT");

TX_STRING("AT+NETAPN=\"airtelgprs.com\",\"\",\"\""); // airtelgprs.comuart_tx(0X0A);uart_tx(0X0D);



while(RX_DATA() != 'K');lcdcmd(0x01);lcd_string("AT+NETAPN");

TX_STRING("AT+DATAFORMAT=1,0");uart_tx(0X0A);uart_tx(0X0D);while(RX_DATA() != 'K');lcdcmd(0x01);lcd_string("AT+DATAFARMAT");

TX_STRING("AT+ASCII=1");uart_tx(0X0A);uart_tx(0X0D);while(RX_DATA() != 'K');lcdcmd(0x01);lcd_string("AT+ASCII");

TX_STRING("AT+TRANMODE=0");uart_tx(0X0A);uart_tx(0X0D);while(RX_DATA() != 'K');lcdcmd(0x01);lcd_string("AT+TRANMODE");

connect:TX_STRING("AT+TCPSETUP=0,106.197.19.161,20000"); // 171.78.146.137uart_tx(0X0A);uart_tx(0X0D);while(RX_DATA() != ',');res= RX_DATA();

lcdcmd(0x01);lcd_string("AT+TCPSETUP");if(res == 'O'){

lcdcmd(0x01);lcd_string(" CONNECTED....");

}

else{

lcdcmd(0x01);lcd_string(" NOT CONNECTED....");goto connect;

}}



CONCLUSION

Security surveillance partakes in significant number of home automation systems, deploying

digital cameras and sensors to monitor and report intrusion events and thereby reducing

damages caused by burglary. In this paper, we present the design, implementation and

operation of a cloud connected adhoc wireless home automation system with en suite

intrusion detection and burglary prevention stratagems. Along with an improved infrared

camera, each node of our home automation system has devised intelligent algorithms for

intrusion detection and subsequently reports any event to a location-aware cloud service in

real-time. In case of an intrusion event, another cloud service alerts the user with a SMS

conversation. The user can then monitor the intrusion from anywhere, on any Internet enable

device by accessing the cloud's web interface. If the intrusion is genuine, the user is provided

with options to stealthily alert neighbors (who are using our home automation system), play

alarm sounds or even report to the police. Using these techniques, burglary can be evaded

effectively

The use of cloud services in home automation derives many benefits extending from cost

reduction to value added services. For further work on the cloud based home automation

network, we plan to add a multi-level cloud audio player and many more. On improving the

security surveillance system, we plan to add more social integration through social

networking sites like face book and Google+. With the help of these online social networks,

we can easily contact and notify a user’s friends in case of an intrusion event and thus make

burglary prevention more effective. We are also developing a socially interactive cloud audio

player for home automation systems where in users can share music on friend’s home

automation network. Apart from services, we plan to device a mechanism to improve the

effectiveness of Smart Grids.



FUTURE WORKS

Cloud computing continues to transform the way organization are doing business, proving to

be a transformative innovation for many enterprises. Considering how far the cloud has come

in recent years spurs questions of what the future will look like and what types of changes we

can expect. Many are speculating about the pace of cloud adoption and what services and

capabilities will become available in the future. Some believe recent reports of online

surveillance and data breaches at popular cloud applications resulting from hacking could

impede the growth rate of cloud adoption. But we believe recent events will lead to further

innovations that will bolster security and corporate control and this will allow more

companies to confidently move important processes online, ensuring the cloud continues its

path of fundamentally transforming corporate IT. Broadly, the future for cloud computing

will include clearly defined and standards-based security solutions and technology that will

enable enterprises to retain full control of their sensitive information assets while continuing

to move more business functions online (thereby reducing IT and other costs). This

year’s The Future of Cloud Computing survey by North Bridge, gave some great insights

into what might be coming for the cloud and I’ve added a couple of additional ideas below.


http://www.dworin.com/north-bridge-venture-partners-and-the-future-of-cloud-computing/


REFERENCES

[1] J. L. Ryan, “Home automation”, Electronics & Communication

Engineering Journal, Volume: 1, Issue: 4, August 1989 pp. 185 – 192.

[2] Anindya Maiti and S. Sivanesan, “Controlling and Monitoring of

Wireless Home Power Management Systems through Public Cloud

Services”, in press.

Websites:

www.wikipedia.com

www.slideshare.com

www.howstuffworks.com

www.yahooanswers.com

www.whatis.com

www.youtube.com

www.perspecsys.com


http://www.perspecsys.com/

http://www.youtube.com/

http://www.whatis.com/

http://www.yahooanswers.com/

http://www.howstuffworks.com/

http://www.slideshare.com/

http://www.wikipedia.com/


APPENDIX A

PIN DIAGRAM OF P89V51RD2



Pin description of P89V51RD2



GSM modem



LCD display

Pin No

Function Name

1 Ground (0V) Ground2 Supply voltage; 5V (4.7V – 5.3V) Vcc3 Contrast adjustment; through a variable resistor VEE

4 Selects command register when low; and data register when high

Register Select

5 Low to write to the register; High to read from the register Read/write6 Sends data to data pins when a high to low pulse is given Enable7

8-bit data pins

DB08 DB19 DB2

10 DB311 DB412 DB513 DB614 DB715 Backlight VCC (5V) Led+16 Backlight Ground (0V) Led-



OUTLOOK OF THE PROJECT


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