p07007: adapted home entry sponsor: national science foundation wenbo chen project manager, ee...
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P07007: Adapted Home Entry
Sponsor: National Science Foundation
Wenbo Chen Project Manager, EE Tanvir Rasel EE
Meklet Kidane EE
Faculty Mentors: Dr. Elizabeth DeBartolo
Dr. Daniel Phillips
• The Adapted home entry system is designed to help people with disabilities to easily gain access to their home without assistance. One house has two residents who can not manually open the front door because of their disabilities. Last year’s team developed a unit that allows them to operate the front door using a remote control.
• The hardware for their design is functional, but the control system does not function properly and must be redesigned
P07007: Project Background
• Project goal: To design and build a robust control system to run the existing hardware.
• Market: Residences with individuals who have mental and physical disabilities.
• Customer: Arc of Monroe County
Michelle Antonelli (House Manager)
P07007: Project Description
• Open and close door manually as well as with a remote.
• Manual usage is given higher priority
• Minimum maintenance/ repair. <= once every 6 months
• Prevent personal injury from door movement.speed of door <= 19.2 deg/sec.
force needed to stop door <= 15 lbs.
use of motion detectors
• Presentable overall appearanceall components and wiring enclosed in casing except the sensors.
• Design within budget<= $1200
P07007: High Level Customer Needs
P07007: Design Concept
Software Flowchart
Start /Reset
Open button is pressed
Check sensor 2
Start timer
Sensor pick up motion?
Sensor 2 off
1. Release Strike Plate / lock in 1 sec.
2. Electromagnet push 3. Engage Clutch
Rotate motor to open
Door hits “open” optoswitch?
OrCurrent sensor picks
spikes?
NO
Stop Motor
YES
Timer = 0 ?or Close button
pressed?
Check Sensor 1 Check sensor 2
Movement detected?
1. Sensor 2 off 2. Electromagnet Pull (
reverse the polarity)
30 sec. timer
initialize
Door hits “closed” optoswtich?
Did current sensor pick up spike?
NOSensor 1 Motion detected?
NO
1.Stop Motor2.Turn off sensor 1 YES
Start/ Reset : 1. Motor is off
2. electromagnet off 3. Looking for input from
receiver 4. Clutch is disengaged
Sensor 1: outside Sensor 2: inside
Close Bt. or Timer = 0
1. Rotate motor to closed position
5 sec yet? NO
NO
YES
Reset to 5 Sec
YES
Is door closed already? Read from closed optoswitch
No
Yes
Is it 5 seconds yet?
NO
No
yes
Reset timer
Yes
1. Disangage Clutch
2. Turn off electromagnet
3. Turn off motor
Yes
No
yes
P07007: Design Concept
Title
Size Document Number Rev
Date: Sheet of
<Doc> 2
Adapted Home Entry Control System
B
1 1Friday, May 04, 2007
D16
D1N4001
Motion Sensor 1(pin 27)
U1
PIC16F876A
1234567891011121314 15
16171819202122232425262728
Q7
TIP120
R34POT
Limit switch for motor
R2110k
0
0
R20240
Optical Sensor (pin2)
0
PIN 9
5V
5V
5V
R11470
0R3510k
Pin 12
Rec
iver
Sec
ond
wire
5V
R2510k
Electromagnetic Clutch
D7D1N4149
jump connector
R2610k
Motor
Motor
NMCLR
5V
D4FFPF10UP60S
ACS750xCA-050
Current sensor
1 2
3 4 5
5V
R19
470 R2410k
0
0
U31
ICD
1234
65
NMCLR(Pin1)
0
0
U14LM150
IN2
OUT3
ADJ
1
Fan on EN
0
D13
D1N4001
Crys tal Osceillator (pin 11)
0
U27LM150
IN2
OUT3
ADJ
1
5V
R17
470
0
Electric Strike Plate
Optical Sensor (pin4)
0
D5FFPF10UP60S
U28
3C91
Q8
TIP120
R22
470
Motion Sensor 2(pin 5)
L4
10uH
1 2
U29
3C91
0
Pin28
Crys tal Osc illator pin12
U2
Relay_DPDT_b
COM1
A
B
NC1
NO1
COM2NC2
NO2
R39R
R37
1k
Electromagnetic Clutch
U3
Relay_DPDT_b
COM1
A
B
NC1
NO1
COM2NC2
NO2
24Vdc
R38
1k
90V
A1
MG1
MOTOR
12
Pin 9
0
0
0
0
0
L110uH
1
2
Q4
TIP120
0
Optical Sensor (pin2)
R33
470
Q5
TIP120
R3610k
R13
470
D8
D1N4149
0
U12LM150
IN2
OUT3
ADJ
1
R14240
R152k
Q6
TIP120
C10.1uF
C111u
R40r
Electromagnet
0
0
0
R1240
D9D1N4001
5V
Pin27
L3
100mH
1 2
R2820
R16
470
R51k
R61k
C11n
0
D15
D1N4001
C5.1uF
R321k
5V
Current Sensor
0
R12
470
Electric Strike Plate
R314.7K
X1
32Khz for time1
C1622pf
Electromagnet
0
U30
Crys tal Osc illator
1
4
8
5
CR OST (pin 11)
C1722pf
Optical Sensor (pin4)
ICD
0
Reviver (pin 25)
0
Motion Sensor 1 EN
R18
470
ICD
C71n
C1922pf
0
Motion Sensor 2 EN Rec iv ier
• Over Voltage– Solution: use over voltage regulators
use fuses
• Short Circuit– Solution: use PCB to limit wires
use shrink tubes to insulate wires
• Components overheat– Solution: include proper ventilation and/or fan (if needed) to
circulate air throughout device
P07007: Risk Assessment
P07007: BudgetItem Component Supplier Part # Qty. Price Per Total Price Notes
1 PICDM2 Microchips DM163022 1 $99.99 $110.99 includes shipping
2 Microcontroller Microchips PIC 16F876A 2 $7.39 $19.56 includes shipping
3 Optical coupler ** FairChild semiconductor FOD852 2 $0.80 $1.60
4 Current Sensor Allegro ACS750SCA-050 1 $2.55 $2.55
5 SCR MOUSER 576-S6015L 2 $1.69 $3.38
6 Fairchild Infrared Interrupter MOUSER 512-H21B1 3 $1.34 $8.80 includes shipping
7 Fairchild Power NPN MOUSER 512-FJP5555TU 3 $0.83 $11.49 includes shipping
8 Darlington FairChild semiconductor TIP120 10 $0.80 $8.00
9 Potentiometers MOUSER 652-3386H-1-254LF 1 $1.29 $1.29
10 Diode RIT 1N4001 10 $0.00 $0.00
11 Motion Sensor Home Security Store DX-40 2 $42.50 $85.00
12 Optex Bracket Home Security Store FA-1W 2 $7.00 $20.95 includes shipping
13 Fairchild Optical Interrupter www.newark.com MOC70P1 2 $0.59 $1.18
14 Electric Strike Plate Fairfax Electronics Trine 001 1 $22.50 $22.50
15 Voltage regulator ** RIT LM317 6 $0.00 $0.00
16 PCB Board PCB express 1 $200.00 $290.73 includes shipping
17 Connectors (for PCB) RadioShack 1 $2.25 $2.25
18 Heat Shrink tubing RadioShack 1 $1.95 $1.95
19 Linear Ball Bearing MSCindustrialsupply 1 $35.60 $35.60
20 Aluminium box Metal Supermarket 01316018 85 1 $150.10 $150.10
21 Fuses (3Amps, 250V) RadioShack -- 1 $2.99 $2.99
22 PCB relays MOUSER 655-RTE24005F 4 $2.40 $22.48 includes shipping
23FCI Modular Jacks
PCB 6 POS VERTICAL MOUSER 649-69254-001LF 1
$0.83 $5.63 includes shipping
24 Crystals MOUSER 815-ACOL-4-EK 2 $1.95 $3.90
25Vishay/Dale Tuning F 32.768 KHZ 2X6
Mouser73-XT26T
1$0.37 $0.37
26 Power Relays Mouser 817-FTR-F1CD012V 4 $2.50 $22.76 includes shipping
27 Resistors ( various values) RIT '-- $0.00 $0.00
28 Fan Mouser 433-BP602512H 1 $8.00 $8.00
29 Capacitors (various value) RIT -- 1 $0.00 $0.00
30 Screws, Nuts, washers, spacers MSCindustrialsupply 1 $13.42 $13.42
31 BreadBoard RadioShack 1 $1.99 $1.99
32 Rocker Switch RadioShack 1 $3.99 $3.99
33 TO-220 HeatSink mouser 532-6043PB 5 $0.29 $1.45
34 Door Installation 8 $40.00 $320.00 $40/hour, estimate 4hrs for 2 men
$1,184.90
Phase 0: Meet with customer and define needs
Phase 1: Concept development and selection
Phase 2: System level design
Phase 3: Detailed Design
Phase 4: Testing, debugging, and
documentation
0 1 2 3 4
MSD 1 MSD 2
Current phase of development
P07007: Product Development Process Phase
• Design meets all customer needs • Control system design/layout complete.• System flowchart complete.• Current budget status:
– Available: $1200– Expected cost: $740
• All components will be ordered next week– Only long lead item is PIC microcontroller
development board (2 weeks)
P07007: Current State of Design
• Mar.19: Design verification completed, PCB design completed.
• Mar.26: Software developed and tested.• Apr.20: Software and Hardware combined and
tested.• May 04: Build casing for system.• May 11: Write user manual, formal paper &
poster.• May 18: Project Review - Phase 4 Completion
P07007: MSD II Project Schedule Milestones
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