Home Enhancement SuiteNathan Irvin, William Bouchonnet, Daniel Sabo, Allen Humphreys

SummaryThe Home Enhancement Suite is a package that will control various aspects of a room in an autonomous fashion when a user is recognized through RFID. Currently, there are home automation kits available, but generally these do not incorporate different settings for different people. The Home Enhancement Suite will allow a user to automate the lighting as well as set up an HDMI product, such as a television, to their favorite channel and volume.

Updated PSSCs1. An ability to detect a user based on RFID and determine which

user has priority, displaying the user's identity on an LCD.

2. An ability to adjust the light intensity to match a user’s settings through X10 protocol.

3. An ability to adjust a television set or other HDMI device using CEC-HDMI protocol, to a user's preferred settings. (ON/OFF, Channel, Volume)

4. An ability to unlock a door when an acceptable RFID is present.

5. An ability to select/set preferred settings through a computer program and the ability to save the "light settings" with the press of a button.

Block Diagram

micro

PLIX

RJ-11 PL 513Transmitter

ACOutlet

X10Power Supply +5

USBHUB

RFIDReaders

spi+3.3

mini

Ambient Light

Sensor

ethernet(on-chip)

ADC

USBCEC-HDMI

I/O

electricstrike

(door lock)

I/O

LCD

spi

user saveI/O

Major ConstraintsCost - Would like to stay under the market price for similar equipment, which is relatively expensive.

Ideally, <$250 for each unit including all necessary peripherals

Variability - Accept many user profiles such that the system is not limited for a large group of people

Efficient - Although not a primary concern, the concept of home automation lends to a “green” initiative and therefore the system should be conscientious of this.

Computation RequirementsIdentify user

Display active profile on LCD

Access profile

System will be connected via Ethernet to a PC

Initiate proper protocols

X-10

CEC-HDMI

Interface Requirements

Up to 3 RFID readers connected via USB

Connect to a PL513 X-10 transmitter via RJ-11

Connect to a PC via Ethernet

Connect to an electric strike for operating the door lock

Most likely through a 2-pin header

On-Chip PeripheralsEthernet (1)

Used for connection to PCUSB (1)

Will connect to a HUB controller expanding total USB availability to 4, of which 3 are required

SPI (2)Interfacing with the PLIX LCD

General Purpose I/O (3)Electric strike signal, CEC comm., “user save”

ADC (1)Ambient light sensor

Off-Chip PeripheralsSerial PLIX - communicates the X-10 protocol to the PL513

PL513 -- X-10 transmitter connected to AC

USB hub controller IC - Expands the on-chip USB to 4 downline

RFID reader modules - connected via USB to main PCB

Electric strike - Locking mechanism

Power Constraints

Everything will be powered by A.C.

There will be an on-board power supply to provide the appropriate DC signals and necessary current to the electric strike when triggerd

Both a 5V and 3.3V regulator will be used as cost is not a major concern and the system should be as efficient as possible

Packaging Constraints

There are no major constraints

Overall the unit should be unobtrusive and fit on a typical desk top or entertainment stand

The system is not portable and therefore weight and stability are not of primary concern

Cost ConstraintsThere are no other systems currently available that perform this exact set of tasks.

Other systems tend to include more things (temperature, surveillance, irrigation), but they also require the purchase of additional modules adding up to well over $1000 for basic functionality

The goal is that the Suite remain much less for the included functions.

<$250 per unit

Component Selection

Microcontroller (must meet previously mentioned On-Chip requirements)

PIC32MX664F064L

Ethernet, USB, 4 SPI, 16 A/D, 85 I/O, Internal Oscillator, 512k Flash, 64k RAM

AT32UC3A0512

Ethernet, USB, 6 SPI, 8 A/D, 109 I/O, Internal Oscillator, 512k Flash, 64k RAM

Component Selection continued

PLIX - only available through Micromint

Ambient Light Sensor

Vishay -- TEMT6000(larger size) or TEMT6200

Both have similar characteristics, but footprint is different

USB Controller IC

(TI)-TUSB2046B (more readily available)

(Atmel)-AT43301

Both utilize 1 upstream USB to create 4 downstream

Questions?