A-Team Home Central Control Unit

Kevin CookePeter LarsonBen VerstegenAndreas RugloskiAden Abdillahi

Design Overview

Home Central Control Unit– Controllable by

LaptopPhone

– Able to adjust or turn on/off household items– Ability to check status of garage door and of

thermostat setting

Functional Requirements

User will be able to access the system via:

Laptop: Use from within house Test with cable -> Move to wireless

Phone: Password, Voice prompt, Device status (for garage door and

thermostat) and option to change the setting

Functional Requirements

Turn on and off lights or any other plug-in devices.

Check current setting of house thermostat and have the ability to adjust it.

Check if the garage door is open or closed and have the ability to toggle or leave in current state.

Turn on and off infrared devices and possibly some controls such as volume.

Block Diagram Outline

Control Unit Block Diagram

M68HC11E0 Schematic

PB6/ADDR1436

PC3/AD

DR

3/DA

TA

312

XT

AL

8

PB0/ADDR842

PE0/AN0 43

PE4/AN4 44

PE1/AN1 45

PE5/AN5 46

PE2/AN2 47

PE6/AN6 48

PE3/AN3 49

VSS

1

MO

DB

/VSTB

Y2

MO

DA

/LIR

3

STRA

/AS

4

E5

STRB/R/W6

PE7/AN7 50

PB5/ADDR1337

PA0/IC334 VRH 52

PB2/ADDR1040

PB7/ADDR1535

PC6/AD

DR

6/DA

TA

615

PC5/AD

DR

5/DA

TA

514

PC4/AD

DR

4/DA

TA4

13

PD4/SCK 24

VD

D26

PA6/OC2/OC128

PA4/OC4/OC130

PD5/SS 25

PA7/PAI/OC127

PA5/OC3/OC129

PA3/OC5/IC4/OC131

PA1/IC233

PA2/IC132

VRL 51

PB4/ADDR1238

PC2/AD

DR

2/DA

TA2

11

PC1/AD

DR

1/DA

TA1

10

PC0/AD

DR

0/DA

TA0

9

PD3/MOSI 23PD2/MISO 22PD1/TXD 21PD0/RXD 20

IRQ

19

XIR

Q18

RESET

17

PC7/AD

DR

7/DA

TA7

16

PB3/ADDR1139

PB1/ADDR941

EX

TAL

7 U1MC68HC11E0CFN3

OE1

LE11

D03 Q0 2

D14 Q1 5

D27 Q2 6

D38 Q3 9

D413 Q4 12

D514 Q5 15

D617 Q6 16

D718 Q7 19

VDD 20

GND10

U4

MC74HC373N

OE19

DIR1

A12 B1 18

A23 B2 17

A34 B3 16

A45 B4 15

A56 B5 14

A67 B6 13

A78 B7 12

A89 B8 11

VCC 20

GND10

U5

MC74HC245AN

GND

GND

GND

A[8..15]

A15A14A13A12A11A10A9A8

A15A14A13A12A11A10A9A8

VCC

AD0AD1AD2AD3AD4AD5AD6AD7

A0A1A2A3A4A5A6A7

VCC

VCC

OE19

DIR1

A12 B1 18

A23 B2 17

A34 B3 16

A45 B4 15

A56 B5 14

A67 B6 13

A78 B7 12

A89 B8 11

VCC 20

GND10

U5

MC74HC245AN

VCC

GND

AD[0..7]AD0

AD1AD2

AD3AD4

AD5AD6

AD7

AD0AD1AD2AD3AD4AD5AD6AD7

A15A14A13A12A11A10A9A8

D0D1D2D3D4D5D6D7

VCC

INV

GND

Reset

Control[0..2]

Control0Control1

Control2

D[0..7]

Control[0..2]

A[0..15]

Type and Features of MCU

MC68HC11E0 52-pin plastic thin quad flat pack (TQFP) low voltage (3.0 – 5.5V) 512 on-chip RAM Synchronous serial peripheral interface (SPI) Asynchronous (NRZ) serial communication

interface (SCI) 8-bit A/D converter

RAM Schematic

 

AT29C512

Electronically erasable and programmable read only memory(EEPROM)

Features of AT29C512

Single cycle reprogram (erase and program) Fast read access time – 70ns Low power dissipation (50mA active current and 100uA

CMOS standby current) Internal program control timer Typical endurance > 10,000 cycles Single 5V +/- 10% supply 512K memory

Reset Switch

1M

R1

.1 uF

C1

D1

B1

SW-PB

GND

GND

VCC

INV INV

Reset

4.7K

R3

Res1

4.7K

R4

Res1

VCC

modeA

modeB

Phone Interface

Upon dialing you will hear a voice prompt– Enter user ID and password– Toggle device status– Voice feedback giving device status– Logout command

Requires a touch tone phone– Includes cell phones

Phone Interface Block Diagram

Ring Detector – TCM1520

Telephone ringing voltage: 90V - 140V @ ~20Hz TCM1520

– Simple, cheap, SAFE! Use of optocoupler completely electrically isolates

circuit from phone line

Hook Switch – HT18

Hook switch is a switch that connects TIP to the switching station to connect to incoming call.

HT18 is an electronic line switch bypassing the need for hook switches.

DMTF Decoder – TT7

DTMF: Dual-tone multi-frequency

Every button on phone has two unique frequencies– TT-7 deciphers which button pressed

Buttons– 1-9 will be commands– 0 will logout

Audio Feedback – ISD2560

ISD2560– Single chip, multi-message, voice record/playback device

Microcontroller compatible– Allows complex addressing

Recordings stored on chip in EEPROM

Amplified outputs– Connect to audio transformer to send audio data down

phone line

Serial Interface

Computer connects to home unit via serial cable

Start testing with cable, then move to wireless. Control of each device using keyboard Monitor shows status of each device

MAX232 Level Converter

RS-232 interface requires– +3V to +12V ON state– -3V to –12V OFF state

MAX232– Delivers +/- 10V

C1+1 VDD 2

C1-3

C2+4

C2-5

VEE 6

T2OUT 7

R2IN 8R2OUT9

T2IN10 T1IN11

R1OUT12 R1IN 13

T1OUT 14

GND15

VCC 16

U3

MAX232CPE

GND

1uF

C?

1uF

C?

1uFC?

GND

1 2 3 4 56 7 8 9

11 10

J?D Connector 9

1 2 3 4 56 7 8 9

11 10

J?D Connector 9

PortPort

PortPort

GND GND

Thermostat

Model: Honeywell Pro 3000

Plans of attack:

1) Reverse engineer to understand/control the microprocessor on the circuit board: ATMEGA169V

2) Hardwire as a counter

X10 Equipment

The Two-Way Powerline Interface Module allows us to interface with the powerline using standard X-10 protocol.

Connects to a serial port using a standard RJ11 telephone connector and cable.

We are using the Appliance, Lab and Relay module.

X10 Binary Codes

The Transceiver (PSC05) provides a 60 Hz square wave with a maximum delay of 100 µsec from the zero crossing point of the AC power line.

Software

Phone tree Majority of software composed from Flash and

CPLD Inputs/Outputs: 8 data bits, 16 address bits, Inputs: phone signals, serial data, door status,

temp Outputs: voice prompt, operation commands

Input Signals

Garage Door - Door sensor on garage door will go low if the garage door is open or send high if the door is closed.

Thermostat – If we use the counter method, we will hardwire the buttons on the thermostat to some simple logic which will keep track of the current thermostat setting.

More Input Signals

Phone – Our circuit will pick up the ring signal and take it off-hook. From here our TT7 will read in the two sine waves and will set the corresponding pin to low.

Laptop – The serial port on the microcontroller will wirelessly receive the signals from the laptop via a transceiver.

Output Signals

Toggle lights via X10 signal Garage door toggle signal Thermostat: increment or decrement command Infrared: sends signal pattern to infrared LED Voice Prompt

Parts List

Part # Name Model1 Thermostat Honeywell PRO3000

2 Microcontroller MC68HC11E0

3 Door/Window Sensor N/A

4 X10 Transceiver 2-way power line

5 X10 Appliance module 2 Pin Polarized

6 DTMF Decoder R-TT7

TimelineID Task Name10 Critical Design Review

15 Touch Tone Decoder

11 CD-R and Hard Copies

12 Collection of Data/Schematics

13 PPT Presentation

14 Rehearse for Presentation

1 Weekly Progress Reports

2 Weekly Progress Reports

3 Weekly Progress Reports

16 First Milestone

17 Appliance Modules

20 Micro Controller

18 Lighting and Phone Interface

19 Garage Door Device

4 Weekly Progress Reports

34 Spring Break

5 Weekly Progress Reports

6 Weekly Progress Reports

7 Weekly Progress Reports

21 Second Milestone

22 Thermostat

23 Computer Interface

24 Control Program

25 IR

8 Weekly Progress Reports

9 Weekly Progress Reports

26 Capstone Expo

32 User's Manual

31 Demo/Explanation

27 Technical Reference Manual

28 Critiques

29 Display Board

30 CD-R and Hard Copies

33 Device Housing

KC,BV,ADR

BV

ADR

ADR

AGM

KC,BV

AA,AGM,BV

BV,PL

ADR

KC,BV

BV

AA

KC

ADR

AGM

ADR

AGM

ADR

BV

ADR

30 2 5 8 11 14 17 20 23 26 1 4 7 10 13 16 19 22 25 28 31 3 6 9 12 15 18 21 24 27 30 3 6 9 12 15 18 21 24 27February March April May

Updated Deadlines and Goals

Feb 27th – CDR: working phone decoding and micro controller running (no code) with working reset.

Mar 20th – Milestone I: computer and phone control over lights and garage door.

Apr 17th – Milestone II: computer and phone control over lights, 1 infrared device, thermostat and garage door motor, final PCB layout complete.

May 3rd – Capstone Expo: wireless computer and phone control over lights, thermostat, infrared devices, all bugs worked out.

Testing

Microcontroller--Used logic analyzer to check reset button and wiring.

DTMF Phone decoder-- First tested the lab phone line directly to circuit - We then called the lab phone from a cell phone and tested if the circuit was reading the correct inputs.

Group Member Tasks

Kevin – Thermostat, Infrared Devices Peter – Microcontroller, RAM, Lighting Controls Aden – Microcontroller, RAM Andreas – Tech. Ref. Manual, Garage Door Device,

Phone Interface Ben – Phone Interface, Control Cards, PCB

THANKS!

ANY QUESTIONS?