Transcript Security Dialer - University of Wisconsin

University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Capstone Design Project
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Eric Biehr
Mario Divis
Igor Stevic
Edwin Sofian
Security Dialer
Capstone Design Project
Kelly Chapin
Slide 0
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Design Team Members
Mario Divis
Edwin Sofian
Igor Stevic
Capstone Design Project
Kelly Chapin
Eric Biehr
Slide 1
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Security Dialer Project Selection
 This design is favored because it offers individual
challenges to each team member, is easily scalable and
covers many electrical design aspects as well as project
requirements.
 Major risks include exceeding the projected budget and
over-scoping of project blocks.
 Other projects were rejected because they were not
complex enough to satisfy high level requirements.
 This project was unanimously supported by all team
members.
Capstone Design Project
Slide 2
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Product Definition
 Automated home security monitoring system
 Emergency status notification through phone line
 Internet status monitoring including remote control of the
system
 CO monitoring, door or window opening, standing water
sensor and AC power failure notification
 Backup DC battery in the event of AC power failure
 Audible alarm in case of an emergency
 The home security system is a common product on the
market but the internet and phone access makes it unique
 This product belongs to a general consumer products/home
security industry
Capstone Design Project
Slide 3
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Standard Requirements
 Major competitors include ADT, Brinks, CyberEye and GE
 Annual volume of 5000 units
 To be sold to North American home owners
 Installation intended by user or contractor, distributed by retailers
 Intended purpose is for life and asset protection
 Indoor use only
 Temporary 60Hz 120VAC power supply with permanent 12VDC
rechargeable reserve battery
 Stainless steel prototype enclosure
 12 months replacement warranty
 Recycle product according to government regulations
 Product Life of 100,000 Hours MTBF
Capstone Design Project
Slide 4
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Standard Requirements
Security Dialer
Minimum
Maximum
Operating Temperature Range (°C)
-10
50
Operating Humidity Range (Rh) Non-condensing
0%
85%
Operating Altitude Range (meters)
0
8,000
Storage Temperature Range (°C)
-20
50
Storage Humidity Range (Rh) Non-condensing
0
90%
Storage Altitude Range (meters)
0
13,000
Storage Duration (years)
5
Product Weight (lbs)
14
Product Volume (cm³)
27,000
Shipping Package Volume (cm³)
32,000
Operational Drop @ 3 meters (G)
1
Vibration and Shock (G)
10
Power Consumption (Watts)
25
Product Cost ($)
220
Prototype Cost ($)
600
List Price ($)
350
Parts Count
100
Unique Parts Count
40
PC Board Count
PC Board Area (cm²)
Capstone Design Project
1
3
500
Slide 5
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Performance Requirements
 Armed and Standby operational modes
 LCD output displaying status indication and user menu
 Viewable within 1 meter
 20 x 4 character display
 Backlight option for increased visibility
 16 key Alpha-Numeric Keypad for user operation and functionality
 Panasonic Omni-directional Electret Microphone
 Audible siren >100dB
 External electrical interfaces
 RJ11 phone line output
 RJ45 Ethernet connection
 AC standard 3-prong Nema input
 Three 3mm single row 2 and 3 pin Molex sensor input connectors
Capstone Design Project
Slide 6
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Performance Requirements
 Unique components
 Atmel AVR AT90S8515 microprocessor
 Winbond ISD2560 voice recording chip
 Holtek HT93214A dialer chip
 Clare M98202 Precise Call Progress Tone Detector
 Sena Technologies Ethernet controller and web server
Capstone Design Project
Slide 7
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Safety Regulation Requirements
 Federal Communications Commission
 Part 68
 Governs the direct connection of terminal equipment to the Public
Switched Telephone Network
 Contains rules concerning for automated dialing machines
 Underwriters Laboratory Standards
 UL639
 Intrusion-detection units intended to be used in burglary-protection
signaling systems
 UL1023
 Household burglar-alarm system units
 UL1950
 Mains-powered or battery-powered information technology equipment
 Canadian Standards Association
 CSA C22.2 No. 205
 Signal equipment
 CSA C22.2 No. 60950
 Information technology equipment
Capstone Design Project
Slide 8
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Electromagnetic Compatibility Standards
 EN50081-1: 1992
 Generic emission standard, part 1: residential, commercial
and light industry
 EN50082-1: 1997
 Generic immunity standard, part 1: residential, commercial
and light industry
 EN55022 – CISPR 22
 Emission requirements for information technology equipment
 EN55024 – CISPR 24
 Immunity requirements for information technology equipment
Capstone Design Project
Slide 9
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
EMC Test Requirements
Specific EMC
Requirements
Test Description
Limits
CISPR 22 Class B
Radiated Emissions
30dBuV/m at 30 to 230 MHz, 37dBuV/m at 230 to 1 GHz
CISPR 22 Class B
Conducted Emissions
46 dBuV at 0.5 to 5 MHz, 50 dBuV at 5 to 30 MHz
MIL-STD-461E, RE101
Magnetic emissions
7 cm for 30 Hz to 100 kHz
IEC 61000-4-2
ESD immunity
±6 kV direct, ±8 kV air (minimum)
IEC 61000-4-3
Radiated immunity
3 V/m for 80 to 2500 MHz , modulated at <10 Hz and 1 kHz
IEC 61000-4-4
Fast Transient immunity
2 kV power lines, 1 kV I/O lines > 3 meters
IEC 61000-4-5
Fast Surges immunity
1 kV (differential), 2 kV (common mode)
IEC 61000-4-6
Conducted immunity
3 V, 150 kHz to 80 MHz, modulated at <10 Hz and 1 kHz
IEC 61000-4-8
Magnetic immunity
3 A/m at 50/60 Hz
IEC 61000-4-11
Voltage variations
10 ms, 100 ms, 500 ms, 2 s; 0%, 40% and 70% of input voltage
IEC 61000-3-2
Harmonics Emissions
Per Standards
IEC 61000-3-3
Flicker Emissions
Per Standards
Capstone Design Project
Slide 10
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
+5V
Edwin
VAC
VDC
Eric
Igor
Kelly
Power
Supply
3
Phone Line
Mario
1
0
Embedded
Ethernet
Controller
/Web
Server
6
Microcontroller
8
Sensors
9
Voice
Recording
1
LCD
2
Capstone Design Project
Ringback
Detection
Dialer
Siren
Internet
+12V
Microphone
7
Keypad
5
4
Slide 11
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Project Gantt Chart
Definition Phase
Capstone Design Project
Slide 12
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Project Gantt Chart
Productization Phase
Capstone Design Project
Slide 13
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Project Gantt Chart
Prototype and Validation Phase
Capstone Design Project
Slide 14
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Power Allocation Table
DC Voltage (V)
Minimum
Maximum
Nominal
Maximum Current (mA)
@ Nominal Voltage
Siren
4
18
12
1000
CO sensor
4
14
5
15
Door/Window sensor
4
14
4
15
Water sensor
4
14
4
40
Keypad
4
6
5
5
Ringback Detection
3
5
5
15
4.5
5.5
5
300
2
5.5
2.5
70
4.5
5.5
5
45
Microcontroller
4
5
5
40
Battery Charger
13.5
15
13.65
300
4.5
6
5
500
Components
Web Server
Dialer
Voice Chip
LCD
Total Maximum Current
Capstone Design Project
2345
Slide 15
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Power Supply Performance Requirements
 Power Source Inputs
 Temporary 60±3Hz 120+10%/-15%VAC power using standard 3 prong
detachable 6’7” Nema plug connecting to IEC 320 AC receptacle with
external 5 x 20 mm fuse holder for consumer accessibility
 Permanent reserve 12VDC 7.2Ahr 86.4Watt-hrs maintenance-free
rechargeable AGM sealed lead-acid battery (5.5 lbs)
Input Voltage
Tolerance (DC)
Regulated
Output DC
Voltages
Regulation
Type
+18V
Output Voltage
Range (DC)
Minimum
Maximum
Nominal
Minimum
Maximum
Efficiency
Linear
21
30
24
17.2
18.8
>70%
+13.65V
Linear
16.65
20
18
13.2
14.2
>70%
+12V
Linear
15
20
18
10.6
12.6
>70%
+5V
Switching
8
14.4
12
4.75
5.25
>85%
Capstone Design Project
Slide 16
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Power Supply Performance Requirements
 AC and DC powered modes
 Transistor and diode switching circuit routes power from DC battery if
AC power source fails
 Logic signal (VOH: 3 to 5.5VDC, VOL: 0 to 1.5V; Io: 40mA max)
sent to microprocessor and web server to display notification on
LCD and security web page when operating in DC powered mode
 Interfaces
 Mechanical:
 AC input line cord
 Electrical:
 Voltage input from AC source and DC battery source
 Voltage outputs to system components with 3 pin connector
 Switching frequency > 200kHz
 Voltage Ripple and Noise < 50mV
 Load Regulation < 5% for 30% load change
 Line Regulation < 5% for 15% line voltage change
Capstone Design Project
Slide 17
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Power Supply Block Diagram
Microcontroller &
Web Server
Logic Signal 40mA
60Hz
120VAC
VOH=5V, VOL=0.7V
Siren 1A
24VAC
Transformer,
Rectifier &
Voltage
Regulator
+18VDC 3A
Voltage
Regulator
+12VDC 2.5A
Power Mode
Detection &
Switching
Circuit
+12VDC 2.5A
Switching
Regulator
Microcontroller
Dialer
Voice Chip
+5VDC 1A
LCD
Web Server
Keypad
40mA
70mA
45mA
500mA
300mA
5mA
Ringback Detection 15mA
Sensors
Voltage
Regulator
Battery
Charger
Capstone Design Project
+13.65VDC 300mA
70mA
DC battery
12V 7.2Ahr
Slide 18
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Power Supply Standard Requirements
Security Dialer
Minimum
Maximum
Operating Temperature Range (°C)
-10
60
Operating Humidity Range (Rh) Non-condensing
0%
85%
0
10,000
-40
70
Storage Humidity Range (Rh) Non-condensing
0
95%
Storage Altitude Range (meters)
0
13,000
Operating Altitude Range (meters)
Storage Temperature Range (°C)
Allocation
Reliability MTBF (years)
4
Storage Duration (years)
5
Product Weight (lbs)
9
80%
16,200
60%
Product Volume (cm³)
Operational Drop @ 3 meters (G)
2
Vibration and Shock (G)
10
Prototype Cost ($)
75
13%
Production Cost ($)
40
13%
Parts Count
30
30%
Unique Parts Count
15
30%
PC Board Count
PC Board Area (cm²)
Capstone Design Project
1
200
30%
Slide 19
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Power Supply EMC, Safety Standards and Disposal
 Electromagnetic Compatibility Standards
 EN 61204-3:2000
 Low voltage power supplies with DC output
 EN 50081-1:1992
 Generic Emission Standard for residential, commercial and light
industry
 EN 50082-1:1997
 Generic Immunity Standard for residential, commercial and light
industry
 Safety Regulation Standards
 UL 603
 Power supplies for use with burglar-alarm systems
 UL 1236
 Battery chargers for charging engine-starter batteries
 Recycle materials according to city/government regulations
Capstone Design Project
Slide 20
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Power Supply Safety Devices
 UL compliant molded AC line cord and IEC 320 Receptacle
 External 3A fuse within IEC 320 receptacle to provide
over-current protection
 145V Varistor to provide suppression of transient voltage
 Properly rated self-resetting fuses used throughout
circuitry to provide over-current circuit protection
 Diodes to protect voltage regulators and DC battery from
voltage polarity reversal
 Transformer provides electrical isolation between AC
source and system
Capstone Design Project
Slide 21
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Power Supply Gantt Chart 1 of 2
Capstone Design Project
Slide 22
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Power Supply Gantt Chart 2 of 2
Capstone Design Project
Slide 23
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
LCD module Performance requirements
 The LCD module displays the status of the whole system.
 A user will be presented a menu with choices of what action/instruction a
user wants to take regarding configuration/setup and arming the
system
 When a certain choice has been made a visual display of the chosen
option will be shown along with all the information related to the
choice
 A backlight will light up every time a user pushes a key on the keypad
 A screen will be able to display at least 60 characters
 A module will have a Hitachi 44780 compatible driver chip
 Inputs:
o Data lines
o 5V DC(+/-10%) power supply for driver and backlight, 1A Max
 Interfacing through pin header
Capstone Design Project
Slide 24
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
20x4 LCD module
GND
LCD Contrast adjust
4.5 < Vdd< 6.5 V
Backlight
power
Vmax =6.5 V
Imax = 1mA
+
-
8/4 bit data bus
3 bit control
line
Vih min = 2.2 V
Vih max = Vdd
Vil min = 0 V
Vil max = 0.6 V
Capstone Design Project
Slide 25
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
LCD module Standard requirements
 Operating Temperature:
 Operating humidity:
 Storage temperature:
 Storage humidity:
 Production cost:
 Max Proto cost:
 Max part count:
 Power consumption:
 PCB size:
 Reliability:
 Disposal:
 Safety requirements:
Capstone Design Project
-10 to 50C
0 to 85% RH, non-condensing
-30 to 70C
0 to 90% RH non condensing
<$10
<$60
<10
<2W
8 x 4 x 1 [cm]
20000 Hrs
According to city/government laws
EN 50081-1:1992, EN 50082-1:1997
Slide 26
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Microcontroller Performance requirements
 A microcontroller will be from the AVR Atmel family of microcontrollers
 A clock of at least 4MHz will be used for the microcontroller
The microcontroller will be used to control most of the devices/peripherals
in the system
 The microcontroller will be used to control the LCD display by responding
to user input as well as monitoring the status of sensors and
controlling Ethernet web server
Inputs:
o Sensors, keypad, ring back detection, Ethernet control signals
o 5V DC(+/-20%) power supply, 50mA Max current
 Outputs:
o Siren signal, Ethernet control line, LCD data and control signals,
dialer, voice recording
 It will interface to other devices through the chip connection pins
Capstone Design Project
Slide 27
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
AT90S8515 Microcontroller interface
LCD module
8/4 bit
data
2 bits
3 bit ctrl
8/16 MHz XTAL
GND
Voice recording
Power and Play/REC control
4 bits
4.5 < Vcc< 6.6 V
Dialer chip control
Web server stand by
and sensor control
4/2 bits
4 bits
Sensors control
1 bit
VIL max = 0.3VCC
VIL min = -0.5 V
VIH min = 0.6VCC
VIH max = VCC + 0.5
VOL max = 0.6 V
VOH min = 4.2 V
Capstone Design Project
Parallel keypad interface/UART
2 bits
1 bit
AC status
signal
3 bits
Ring back
status
I I/O max = 40mA
RI/O max = 120k ohm
ICC max = 3mA
Ring back
enable
Slide 28
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Microcontroller Standard requirements
 Operating Temperature:
 Operating humidity:
 Storage temperature:
 Storage humidity:
 Production cost:
 Max Proto cost:
 Max part count:
 Power consumption:
 PCB size:
 Dimensions:
 Reliability:
 Disposal:
 Safety requirements:
Capstone Design Project
-10 to 80C
0 to 90% RH, non-condensing
-30 to 85C
0 to 90% RH non condensing
<$2
<$12
<4
<1W
N/A (stand alone product)
5 x 1 [cm]
10 years
According to city/government laws
EN 50081-1:1992, EN 50082-1:1997
Slide 29
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Microcontroller and LCD Gantt Chart
Capstone Design Project
Slide 30
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Microcontroller and LCD Gantt Chart
Capstone Design Project
Slide 31
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Telephone Basics
•
ON-HOOK Condition:
•
•
•
•
48 VDC Between Tip and
Ring
Tip = 0 VDC
Ring = -48 VDC
No current flow
•
OFF-HOOK Condition:
•
•
•
•
•
8 VDC Between Tip and Ring
Tip = -20 VDC
Ring = -28 VDC
DC Resistance = 200-300Ω
20-50mA Current Flow
DTMF Dial Tone Frequencies
•
Line Characteristics:
•
•
•
Ring Signal: 70 – 120 VAC
Bandwidth: 300Hz-3.4kHz
Min DTMF Tone Duration:
100ms
Capstone Design Project
1,209 Hz
1,336 Hz
1,477 Hz
697 Hz
1
2
3
770 Hz
4
5
6
852 Hz
7
8
9
941 Hz
*
0
#
Slide 32
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Dialer Performance Requirements
•
•
•
Dialer will dial the preset telephone number in the case of an
emergency. This will be accomplished by placing DTMF (Dual Tone
Multi-Frequency) signal on the telephone line.
Phone number will be stored in the Micro-controller memory and
sent to the dialer in form of 4-bit binary signal. This signal will be
decoded by Dialer circuitry.
Inputs:
• 4 bit digital signal from micro-controller
• Vin (low) = 0-0.8 VDC
• Vin (High) = 3.9-5.5 VDC
• 5V (±10%) DC, 70mA power supply
• 1 bit Relay Control Signal
• Vin (low) = 0-0.8 VDC
• Vin (High) = 3.9-5.5 VDC
• Relay will be used to close/open phone line
•
•
Output:
•
DTMF signal (697-1477Hz), 0.5VAC Peak max.
Mechanical interface: RJ11 connector to phone line
Capstone Design Project
Slide 33
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Dialer Performance Requirements –
Block Diagram
5VDC(+/-10%), 70mA
Power Supply
Logic
16-Bit
Dial Code
Decoder
Dialer
4-Bit Dial and Control Signal from uC
Logic Low - 0.8VDC Max
Logic High - 3.9 to 5.5VDC
Control
DTMF
Telephone Line
Interface, Amplifier
and Relay
1-Bit Control Signal from uC for
Relay Activation
Logic Low - 0.8VDC Max
Logic High - 3.9 to 5.5VDC
Capstone Design Project
694-1477Hz, max 0.5V Peak AC
Audio signal to Telephone Line
Slide 34
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Dialer Standard Requirements












Operating Temperature: -10 to 60C
Operating Humidity: 0 to 85%RH, non-condensing
Storage Temperature: -40 to 70C
Storage Humidity: 0 to 95%RH, non-condensing
Max Part Count: <35
Max Proto Cost: < $30
Production Cost: <$20
Power Consumption: <1/2W
PCB size: 5 X 10 X 2 (Cm)
Reliability: 1000Hrs MTBF
Disposal: According to government regulations
Safety Requirements: EN 50081-1:1992, EN 50082-1:1997, Part 68
FCC Rules.
Capstone Design Project
Slide 35
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Dialer – Gantt Chart
Capstone Design Project
Slide 36
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Dialer – Gantt Chart
Capstone Design Project
Slide 37
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Voice Recording/Playback - Performance
Requirements
•
•
•
•
Voice recording will record the user’s message which will be played
after the telephone communication between the user and system
has been established.
The message will be recorded when RECORD signal is received from
the micro-controller.
The message will be played when PLAY signal is received from the
micro-controller during emergency.
Inputs:
•
•
Audio AC signal 300-3400Hz, 50mVP-P Max
Digital control signals RECORD/PLAY and Power Down
• 0-0.8VDC Low, 3.9-5.5VDC High
•
•
Output:
•
•
5VDC(±10%) power supply, 45mA Max
300-3400Hz AC signal, 0.5VAC Peak Max
Mechanical Interface: 2-Pin Microphone Connector
Capstone Design Project
Slide 38
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Voice Recording/Playback - Performance
Requirements
Block Diagram
5VDC(+/-10%), 45mA
Power Supply
Electret Microphone
1 bit
Voice Recording Chip
Play/ Record
Low: 0.8VDC max
High:3.9-5.5 VDC
1 bit signal from uC
Play : Active high
Record : Active low
Amplifier
300-1300Hz,
0.5VAC Peak Max
SIgnal to telephone line
1 bit
Power Down
Low: 0.8VDC max
High:3.9-5.5 VDC
1 bit signal from uC
Power Down: Active high
Capstone Design Project
Slide 39
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Voice Recording Standard Requirements












Operating Temperature: 0 to 60C
Operating Humidity: 0 to 85%RH, non-condensing
Storage Temperature: -40 to 70C
Storage Humidity: 0 to 95%RH, non-condensing
Max Part Count: <20
Max Proto Cost: < $40
Production Cost: <$30
Power Consumption: <1.25W
PCB size: 5 X 8 X 2 (Cm)
Reliability: 1000Hrs MTBF, >50000 Recording Cycles
Disposal: According to government regulations
Safety Requirements: EN 50081-1:1992, EN 50082-1:1997, Part 68
FCC Rules.
Capstone Design Project
Slide 40
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Voice Recording - Gantt Chart
Capstone Design Project
Slide 41
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Voice Recording - Gantt Chart
Capstone Design Project
Slide 42
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Embedded Ethernet Controller and Web
Server – Performance Requirements
•
•
•
•
OEM Product that will enable two way communication between the
user and the device.
User will be able to monitor each sensor status over the internet.
User will also have the ability to turn individual sensors on or off and
to shut-down/restart the system.
The I/O commands will be transferred through TCP/IP protocol using
the internet socket interface. The socket interface will be
implemented with Java applet.
Inputs:
•
4 one-bit digital inputs
• 0-0.8 VDC Low, 2-5 VDC High
•
•
5VDC (±10%) power supply, 300mA
Broadband Ethernet
Capstone Design Project
Slide 43
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Embedded Ethernet Controller and Web
Server – Performance Requirements
•
Outputs:
•
4 one-bit digital outputs
• 2.5 – 5 VDC High
•
•
Broadband Ethernet
Mechanical Interface:
•
•
RJ45 connector
20 pin , two-row I/O connector, 2.5 mm Pitch
Capstone Design Project
Slide 44
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Embedded Ethernet Controller and Web Server –
Block Diagram
4-Bit
Status signal from sensors:
Low: 0.8V max
High: 2 - 5 VDC
4-Bit
4-Bit
Ethernet Controller
And
Web Server
Interfacing Circuit
Output Control Signals
High: 2.5 - 5 VDC
4-Bit
Internet
5VDC(+/-10%), 300mA
Power Supply
Status Signals: CO Sensor status, Door/Window status, Power Failure sensor and
Water Sensor
Control Signals: Can switch CO, Water and Door/Window Sensor ON/OFF as well
as place system on Stand-by mode.
Capstone Design Project
Slide 45
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Embedded Ethernet Controller and Web
Server – Standard Requirements












Operating Temperature: 0 to 60C
Operating Humidity: 0 to 85%RH, non-condensing
Storage Temperature: -40 to 70C
Storage Humidity: 0 to 95%RH, non-condensing
Max Part Count: <40
Max Proto Cost: < $200
Production Cost: <$70
Power Consumption: <1.5W
PCB size: 10 X 6 X 2 (Cm)
Reliability: 1000Hrs MTBF
Disposal: According to government regulations
Safety Requirements: CISPR 22, CISPR 24
Capstone Design Project
Slide 46
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Embedded Ethernet Controller and Web
Server – Gantt Chart
Capstone Design Project
Slide 47
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Embedded Ethernet Controller and Web
Server – Gantt Chart
Capstone Design Project
Slide 48
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Ring Back Detection
Power Supply + 5V
Ringback
Detection
Micro controller
Phone Line
Once the alarm is triggered, uC talks to the dialer to dials.
The ring back detection looks for ring-back/busy/dial tone.
It connects to the phone line, detects the signals, and will let the uC
know when the line is answered.
WHY RING BACK ?
Ring Back/ Ring Tone is returned to the calling party to indicate that the
called line has been reached and power ringing has started. In the
precise tone plan, audible ring back consists of 440 Hz + 480 Hz with a
2 seconds on/ 4 seconds off temporal pattern.
Capstone Design Project
Slide 49
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Basic Call Progress
Capstone Design Project
Slide 50
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Basic Call Progress

Divided into 6 phases:
On-hook  Telephone set is in ready condition wait for a caller to
pick up its handset.
Off-hook  Costumer decides to make a phone call and lifts the
handset off the switch hook of the telephone set.
Dialing  Costumer enter a phone number (address) of a telephone at another location.
Switching  Telephone switch translates the tones into a port
address that connects to a telephone set of the
called party.
Ringing  CO switch connects to the called line, and sends
ringing signal to the phone of the called party.
While ringing the called party’s phone, the CO
switch sends ring back tone to caller and lets the
caller know that ringing is taking place at the called
party’s phone.
Talking  As soon as the called party lifts the handset, an off-hook
phase starts again from the opposite site of the network.
The local loop is closed on the called party’s side, and
current starts to flow to the CO switch. This switch detects
current flow and completes the voice connection back to the
calling party’s phone.
Capstone Design Project
Slide 51
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Precise Call Progress Tone Detection




Parts #: M-982-02P ~ 22-pin plastic DIP
Audible tones sent from switching systems to calling
parties to show the status of calls
Calling parties can identify the success of a call placed by
what is heard after dialing
Operation Theory:
The use of IC techniques allows the M-982-02 to pack the
five filters for call progress following into a single 22-pin
DIP. A 3.58 MHz crystal controlled time base guarantees
accuracy and repeatability
Capstone Design Project
Slide 52
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Block Diagram
SIGIN
Precise Tone Detector
DET3
XRANGE
Detector
DET4
Outputs
Capstone Design Project
Clock
Generator
Power
Regulation
PD
Vdd
OE MODE EN
Slide 53
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Precise Call Progress Tone Detector

M-982-02 contains five signals detectors (DET n) sensitive to the frequencies
(e.g. Det3-440Hz, Det4-480Hz). In this case, I am going to use 2 frequency
signals only for Ring Back.

DET n outputs of the M-982-02P can determine the nature of signals/characters
present by measuring their duty cycle.

Duty cycle also refers to as Interruption Rate.

Tri-state timing to latch the signals:
OE is active high input  Z is low

Signal timing:
SIGIN (analog signal input)
DET n (active tri-state output)
STROBE (active high output)

Power Down Timing:
PD is high (logic high inhibits internal clock)
Clock is inactive
Capstone Design Project
Slide 54
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Capstone Design Project
Security Dialer
Slide 55
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Input and Output Signals
The input signals are:
a) EN, OE, XRANGE, MODE (Vil=5V, Vih=3V)
b) Pull-up and Pull down currents (PD = 4 to 10uA)
c) SIGIN pin -> R=80kohm, f=500Hz, V = 5V
d) CLOCK -> External connect to XIN
(Vil=0.2, V Vih=4.8V, Duty Cycle=40-60%)
The output signals are :
a) DET n (Vol=0.5V)
b) STROBE pins (Voh=2.2V)
c) DET n pins (Ioz=1uA)
For the logic gates (determine by the frequency below):
- SILENCE:
MODE(X) DETn(0) STROBE(0) PD(0) OE(1) EN(1)
- DIAL TONE: MODE(0) DET1(1) STROBE(1) PD(0) OE(1) EN(1) OR
MODE(X) DET3(1) STROBE(1) PD(0) OE(1) EN(1)
- RING BACK: MODE(X) DET3(1) STROBE(1) PD(0) OE(1) EN(1) OR
MODE(X) DET4(1) STROBE(1) PD(0) OE(1) EN(1)
- BUSY TONE: MODE(X) DET4(1) STROBE(1) PD(0) OE(1) EN(1) OR
MODE(1) DET2(1) STROBE(1) PD(0) OE(1) EN(1)
For the frequencies:
- DIAL TONE: 350Hz + 440Hz
- RING BACK: 440Hz + 480Hz
- BUSY TONE: 480Hz + 620Hz
Capstone Design Project
Slide 56
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Standards Requirements




Market
Max Prototype cost: $25
Max Production cost: $12
Mechanical
Max Total PCB Area: 100 cm^2
Power
Single supply: 3 to 5 volt
Current Drain (Idd): = 15 mA
Environmental
Storage Temperature: -40 to 150˚C
Operating Ambient Temperature: -40 to 85˚C
Operating Conditions:
Vdd = 2.7 – 5.5V
Vref = 1.296V – 1.404V
Power Supply Noise = 20mVp-p
Capstone Design Project
Slide 57
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Standard Requirements

Safety
EMC Standard:
IEC 61000-3-2 (power line harmonics)
IEC61000-4-2 (Electro Static Discharge
Immunity)
Other Standards:
ISO 9001:2000 Certification
ISO 9001:1994 Certification
Capstone Design Project
Slide 58
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Performance Requirements



Operation Modes
Power-down mode: 4 to 10 uA
Electrical Interface
- Input : Analog (Linear)
- Outputs: Digital (CMOS compatible), tri-state
- Dynamic range: 30 dB
- Signal Detection Freq Range: -11 to +11 Hz
* Duration (tdd) = 200ms
* Bridge time (tbb) = 20ms
- Signal Rejection Freq Range: -66Hz
* Interval duration (tid) = 160ms
* Time to output (tio) = 200ms
Mechanical Interface
Connector: Phone line (a & b)
Capstone Design Project
Slide 59
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Block Ten - Siren
The siren block communicates to the user when the security system
is triggered via audible alert. This block is located inside of the
system’s enclosure. Sound will travel through louvers in the
enclosure. Amplifier is a push-pull design. The siren block will be
activated by supplying power to the siren driver. Driver chip is
ZSD100.
 Siren signal generation comes from the ZSD100 chip. Capacitors
are TBD, and are added to vary the siren’s output frequency.
 Push-pull amplification is implemented by six transistors, two
MS2222 npn transistors, two ZTX690B npn transistors, and two
ZTX790A pnp transistors. As it stands, additional amplification
may be necessary.
 Speaker is made by CUI Inc. Part number GF1004H.
8 ohm
4 inches in diameter
Nominal input of 20W
Capstone Design Project
Slide 60
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Block Ten - Siren
Amplification
Speaker
12 Volt on/off signal
Capstone Design Project
Siren Driver
ZSD100
Slide 61
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Siren specifications




Market - Estimated prototype cost is $20, with a mass production
cost of $15.
Power – 12V dc, delivered from the power supply. Minimum
operating voltage is 4V, maximum is 18V. Total power
consumption is 12W.
Mechanical – Maximum product volume is 64 cubic inches.
Individual shipping container volume of 80 cubic inches.
Maximum product mass of 1.5 pounds. This circuit will be on the
master printed circuit board, and occupy 2.25 square inches.
Supply voltage will be transferred via soldered trace. An
estimated maximum shock force of 2 G due to the speaker.
Product will survive 4 drops. Speaker will be enclosed in a plastic
bag for moisture resistance during shipping.
Environmental – Range of operational and storage temperature
is -40 C to 70 C. Relative humidity cannot exceed 90-95% at any
time. Product can be stored for ten years.
Capstone Design Project
Slide 62
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Siren specifications continued





Safety –UL464 (Standard for Audible Signal Appliances)
Manufacturing –The maximum total parts count is 10, 3 of
which are unique. The maximum parts and materials cost is
$18, and the maximum assembly and test cost is $2.
Life cycle – Estimated maximum production lifetime of ten
years, with a factory and/or field service strategy. Product life is
estimated to be 15 years, with a three year warranty period.
Product will be disposed in accordance to local laws and
regulations.
Performance Requirements – The power supply turn the siren
on or off.
User indicators – The siren is only one of four ways to inform
the user of a zone violation. User will be provided with an
estimated 110dB signal from the speaker. The perception
distance will be 100 feet indoors, under “normal noise”
conditions in a home.
Capstone Design Project
Slide 63
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Siren specifications continued



Operation modes – Unit will have two modes, on and off.
Electrical Transfer Performances – THD maximum is 10%,
min power gain of 1. A maximum expected delay between when
system is triggered, and when the siren is activated, is 2 seconds.
Negligible EM field is expected outside of the stainless steel
enclosure.
Mechanical interfaces – A four inch paper speaker cone is the
only mechanical interface.
Capstone Design Project
Slide 64
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Siren Gantt Chart
Capstone Design Project
Slide 65
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Block four - Keypad
The keypad is the mechanical user interface for
the security system. It can be used for arming,
disarming, system setup, and dialer
programming. The user may activate and
deactivate the alarm by entering a security code
on the keypad. The user also can use the
keypad to control various functions of the
system.
A Grayhill 96 series keypad will be used. This part was
chosen solely upon its price. The E-Lab EDE1144 keypad
encoder will be used to interface the keypad to the
microprocessor. This encoder was chosen to reduce design
time, part costs, and PLD redundancy.
Capstone Design Project
Slide 66
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Block Four - Keypad
8 I/O Signals
5V Supply
Capstone Design Project
EDE1144 4 Parallel Output
Keypad
Encoder
Possible
UART Output
Slide 67
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Keypad specifications



Market - Estimated prototype cost is $18, with a mass production
cost of $15.
Power – 5V dc, delivered from the power supply. Minimum
operating voltage is estimated to be 4V, maximum is estimated to
be 6V.
Mechanical – Maximum product volume is 8 cubic inches.
Individual shipping container volume of 10 cubic inches.
Maximum product mass of 0.25 pounds. This circuit will be on the
master printed circuit board, and occupy 2 square inches. Supply
voltage to the keypad will be transferred via pin and socket
connector. Supply voltage to the logic will be delivered by a
soldered trace on the circuit board. An estimated maximum shock
force of 10G. Product will survive 20 drops. Product will be
enclosed in a plastic bag for moisture resistance during shipping.
Capstone Design Project
Slide 68
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Keypad specifications continued





Environmental – Operating temperature is form -30 to 80
Celsius.
Safety – None found
Manufacturing – Maximum total parts count is 15, with
five being unique parts. Maximum total parts and material
cost will be $20, assembly and test cost of $5.
Life Cycle - Estimated maximum production lifetime of ten
years, with a factory and/or field service strategy. Product
life is estimated to be 15 years, with a three year warranty
period. Product will be disposed in accordance to local laws
and regulations.
Performance requirements – The keypad will give the
user access to all of the system’s functions. Buttons are of
the pushbutton type, with a minimum of 0.04 inches of
travel. Operating force is 175 grams, maximum is 215
grams, and minimum is 135 grams.
Capstone Design Project
Slide 69
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Keypad specifications continued




User indicators and displays – Sixteen black buttons are alphanumeric, 0-9, *, #, and A-D. Symbols on keys are white. Each
key is 0.308 square inches. Viewing distance is approximately
four feet depending on the usurers vision, in normal room
lighting.
Operation modes – Power modes are on, and off.
Electrical interfaces – Keypad will be connected to the driver
with an 8 pin connector. Logic will be soldered to the main board
and employ traces to carry the signals.
Mechanical interfaces – Connector from keypad to main board
is a single row, 8 connector female housing. Wires from the
connector will be soldered onto the main board.
Capstone Design Project
Slide 70
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Keypad Gantt Chart
Capstone Design Project
Slide 71
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Block Two - Sensors
There are three sensors in the system. These sensors are
what trigger the alarm. Carbon monoxide, water level, and
door / window opening sensors are used to keep the user
informed of unfavorable circumstances. The production
model will have will have the capability of using more than
three sensors. Only three are used in this case to keep the
prototype recourses to a minimum.
Capstone Design Project
Slide 72
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Gas Sensor
12 Volt Supply
Carbon Monoxide Sensor
Ground
Single
Line
Analog Output
Logic
Single
Digital
Out
Chances are likely that the proposed idea of a carbon
monoxide sensor will not be used due to availability. The
replacement sensor is yet to be determined.
Capstone Design Project
Slide 73
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Gas sensor specifications


Market – Maximum product
cost of $40, $45 maximum
prototype cost.
Power – 12V dc, delivered
from the power supply to the
sensor. Minimum operating
voltage is estimated to be
10V, maximum is estimated
to be 14V. Power is supplied
to the sensor through a Molex
connector. Power for the logic
following the sensor will be 5V
dc. Maximum of 6V,
minimum of 4V.
Capstone Design Project
Slide 74
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Gas sensor specifications continued





Mechanical – Maximum product volume is six cubic inches,
shipping volume is ten cubic inches. Maximum product mass is
0.25 pounds. Sensor has four parts, all of them are unique. The
maximum shock force is 100G, 5 impacts. Product will be
wrapped in a plastic bag for moisture protection.
Environmental - Operating temperature range is -10 to 55
Celsius. Storage temperature ranges from -30 to 85 Celsius.
Product does not provide a humidity range for storage or
operation.
Safety – UL 2034 (Standard for Single and Multiple Station
Carbon Monoxide Alarms), UL 634 (Standard for Connectors and
Switches for Use with Burglar-Alarm Systems)
Manufacturing – Total parts count of five, all unique parts.
Parts cost is estimated at $38, assembly cost of $2.
Life cycle – Estimated production lifetime of five years. Product
has a field or factory service recommendation due to calibration.
Product life of 2-3 years. Product will be disposed in accordance
to local laws and regulations.
Capstone Design Project
Slide 75
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Gas sensor specifications continued




Performance requirements – The sensor’s input will be a port
into open air.
Operation modes – Sensor has two modes, on and off. Sensor
has two functional modes, “contaminated air”, and “clean air”.
Electrical interfaces – Sensor produces an analog output.
Voltage level is monitored by a yet to be determined logic
circuit.
Mechanical interfaces – This sensor requires three contacts.
Therefore a 3 position
female connector is used to link
it to the system.
Capstone Design Project
Slide 76
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Water sensor specifications






Market – Maximum production cost is $10, maximum prototype
cost is $15.
Power - 12V dc, delivered from the power supply. Minimum
operating voltage is estimated to be 4V, maximum is estimated to
be 14V.
Mechanical - Maximum product volume is six cubic inches,
shipping volume is ten cubic inches. Maximum product mass is
0.25 pounds. Sensor has four parts, all of them are unique. The
maximum shock force is 100G, 10+ impacts. Moisture resistance
packaging is not needed.
Environmental – Operating and storage temperature is form
30 to 80 Celsius. Product will operate in all humidity.
Safety –UL 634 (Standard for Connectors and Switches for Use
with Burglar-Alarm Systems)
Manufacturing - 8 parts maximum, 6 parts are unique.
Maximum parts cost is $7, with a $2 assembly and test cost.
Capstone Design Project
Slide 77
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Water sensor specifications continued




Life cycle – Estimated Maximum production lifetime of 15
years. Replacement only, no service. Product life of 10 years.
Product will be disposed in accordance to local laws and
regulations
Operation modes – Sensor has two modes on, and off. The
functional modes are “water present”, and “no water present”.
Electrical Interfaces – When water is detected, the sensor will
send a 5V dc signal to the system.
Mechanical interfaces – This sensor requires two contacts.
Therefore a 2 position
female connector is used to link
it to the system.
Capstone Design Project
Slide 78
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Water Sensor
Sensing
Element
12 Volt Supply
Dc output
Capstone Design Project
Logic
Single
Digital
Output
Slide 79
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Door / Window sensor






Market – Maximum production cost is $8, maximum prototype
cost is $15.
Power - 12V dc, delivered from the power supply. Minimum
operating voltage is estimated to be 4V, maximum is estimated
to be 14V.
Mechanical - Maximum product volume is 1 cubic inch,
shipping volume is 1.2 cubic inches. Maximum product mass is
0.1 pounds. Sensor has 3 parts. The maximum shock force is
100G, 10+ impacts. Product will be wrapped in a plastic bag
for resistance to humidity.
Environmental – Operating and storage temperature is form 30 to 65 Celsius. Humidity operation rating is unknown.
Safety – UL 634 (Standard for Connectors and Switches for
Use with Burglar-Alarm Systems), UL 498 (Standard for
Attachment Plugs and Receptacles),
Manufacturing - 2 parts maximum, both parts are unique.
Maximum parts cost is $7, with a $1 assembly and test cost.
Capstone Design Project
Slide 80
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Door / Window sensor continued




Life cycle – Estimated Maximum production lifetime of 15
years. Replacement only, no service. Product life of 10 years.
Product will be disposed in accordance to local laws and
regulations
Performance requirements – Momentary pushbutton switch
used to sense entry.
Operation modes - Sensor has two modes, on and off. Sensor
has two functional modes, “closed window / door”, and “open
window / door”.
Electrical interfaces - Powered pushbutton will return 12V dc
to the microprocessor in the event of intrusion.
Capstone Design Project
Slide 81
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Door / Window sensor
5 Volts DC
Sensing
Element
DC
Output
Capstone Design Project
Slide 82
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Door / Window sensor continued

Mechanical interfaces – The sensor will be mounted near the
pane of a window or door. There will need to be a small angled
bracket attached to the window or door to make precise contact
with the switch only when the door/ window is closed. The
switch itself will need to be mounted to the pane by a separate
right angle bracket. This sensor requires two contacts.
Therefore a 2 position
female connector is used to link
it to the system.
Capstone Design Project
Slide 83
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Door / Window sensor illustrated

Installation example for a door – Required hardware is one
angled bracket and one flathead wood screw. Shown below are
both an “open door” and a “closed door” situation.
Capstone Design Project
Slide 84
University of Wisconsin – Milwaukee
EE 318-595 Spring 2004
Design Team No. 1
Security Dialer
Sensors Gantt Chart
Capstone Design Project
Slide 85