MICROCONTROLLER BASED REMOTE CONTROL FOR

PATIENTS USING ACCELEROMETER

SENSORS AND ZIGBEE

PRESENTED BY:Riyanka Dixit 1SJ07EC068Pushpashree A 1SJ07EC069Sarveshwari R 1SJ07EC088Shabana Begum 1SJO7EC089

Under the guidance ofMr.M.Nagendra Kumar

Asst Professor, Dept of E&CSJCIT

INTRODUCTION In hospitals sometimes patient, is not

capable to go near nurse and ask her requests or help. In such cases patient can send information to the nurse through wireless. Here ZigBee is used to send information. This project is useful in such cases.

In the absence of nurse, the patient can comfortably meet his basic requirements like light, fan,etc…

OBJECTIVES: Our objective is to design a model where

a patient can send information to the nurse’s desk according to his or her requirement and also control devices around him or her like fan, bulb etc ..,without having to depend on anybody.

The project is implemented using ZigBee wireless technology and accelerometer sensors.

WHAT IS ZIGBEE?

ZigBee is the set of specifications built around the IEEE 802.15.4 wireless and high level communication protocols.

The 802 group is the section of the IEEE involved in network operations and technologies, including mid-sized networks and local networks ;Group 15 deals specifically with wireless networking technologies.

Supports for critical latency devices, such as joysticks.

The technology is intended to be simpler and cheaper than other WPANs, such as Bluetooth.

It requires only about 10 % of the software of a typical Bluetooth or Wireless Internet node.

It consumes very low power and is used in many wireless applications

WHY CHOOSE ZIGBEE ?

Supports large number of nodes. Reliable and self healing. Very long battery life. Secure. Low cost. Can be used globally Enables reliable wireless network. Supports Robust wireless network. Data rates of 20 kbps and up to 250

kbps

BLOCK DIAGRAM

Transmitter unit:

Accelerometer sensor

ADC Micro controllerP89V1RD2

ResetBuzze

r

DIP switch

ZigBee

relay

Fan

Bulb

Receiver unit:

MicrocontrollerP89V51RD2

Alphanumeric LCD

Frequencydisplay

ZigBee

DCadapto

r

Powersupply

WORKING: By using different movements of the hand

the patient can control the accelerometer sensor. Each movement will give a different values. Those values are given to the ADC. According to the received values we can assign different information to each position.

Here DIP switch is used to select patient. For one accelerometer sensor value patient can request to switch on fan, another to request to switch on bulb, one to send information to nurse.

Here patient can request four options like water, health, food and help.

COMPONENTS REQUIRED:

SOFTWARES USED1.Embedded C2.Keil Compiler3.Flash Magic

HARDWARES USED1. Microcontroller P89V51RD2- NxP, 2. Accelerometer Sensor3. DIP Switch4. ZigBee5. Seven Segment Display6. 20x4 line Alphanumeric LCD 7.Buzzer8. ADC08099. Relay, Fan Unit, Bulb Unit

COMPONENT DETAILS:

8051 architecture based P89V51RD2 microcontroller from NxP is used to implement this project. This Microcontroller acts as the heart of the project, which controls the whole system.

It contains 1k RAM, 64k Flash, 3 Timers, 2 external interrupts, 1 UART, 32 GPIO’s, ISP programming support etc. KEIL IDE is used to program the microcontroller and the coding will be done using Embedded C.

On alphanumeric LCD all the information sent by patient will be displayed. If the first patient sends any request to the nurse then one will be displayed on the seven segments connected to the module, which is kept in nurse table. Like that it will continue.

ADVANTAGES: A bed ridden patient can take care of

his basic necessities in the absence of nurse.

Nurse can simultaneously monitor a number patients in a single room, sitting in her chamber.

Elderly people staying alone at home can meet their basic requirements comfortably sitting at one place.

DISADVANTAGES:  ZigBee has range limitations of about 70

meters.  This project may not be suitable in cases

where the patient cannot use his hands(ex: coma patient; patient who has lost his hands or whose hands have been paralyzed) because in this project input to the accelerometer is through hand movements.

 In the receiver part of the project a separate receiver is needed for every single patient. This may increase the hardware used and also the overall cost of implementation.

THANK YOU