Transcript T1P3-Luu-Power_bus

318-595 Capstone Project
Power-bus Block Implementation
Power1 at the bus
RF. 1
U I.1
12V DC Battery
CPU. 1
SC .1
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318-595 Capstone Project
Power-bus Block Introduction Description
Power at the Bus ( 12 V DC battery supply to)
2
• UI.1
5V and 500mA
• RF.1
• CPU.1
• SC.1
3.3V and 60mA
3.3 V and 25mA
5V and 30mA
318-595 Capstone Project
Power1 Block Diagram
Power1 at the bus
+3.3V
TRANSC.1
60mA
+5V
U I.1
500mA
PS1
12 V DC Battery
+3.3V
CPU1
25mA
+5V
30mA
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SC.1
318-595 Capstone Project
Power Block Performance Requirements
Power Inputs:
• 12V DC input (Bus Unit) ranging from 57 - 63 Hz
Electrical Functions:
• Power supply to the CPU, Set up Control, UI and Transceiver
Electrical Interfaces:
• Analog, Digital and Power Signals
• Bi-Directional RF Transceivers
• RS232 Network Interface
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318-595 Capstone Project
Power-bus Block Performance Requirements
Electrical Functions:
• Power Modes:
– On, Off
• Function Modes:
– Normal
– Configure
• Functional Features:
– Bus Call
– Taxi Request
Electrical Interfaces:
• Analog, Digital and Power Signals
• Bi-Directional RF Transceivers
• RS232 Network Interface
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318-595 Capstone Project
Power-bus Block Standard Requirements
Energy Source:
• 12 V DC ( 10.2V to 13.8 V DC +-15% )
• 60 Hz ( 57 to 63 Hz +-5% )
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318-595 Capstone Project
Power_bus Block Standard Requirements
Modes:
•
On ( Primary, 120 VAC)
Frequency Range:
•
60 Hertz ( 57 to 63 Hz range)
Safety current:
• 1.5 A max current limit protection
• 12 V maximum potential of user surface
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318-595 Capstone Project
Standard System Level Requirements
• Standard Requirements
– Environmental:
•
•
•
•
•
Operating Temperature Range: -40 to 70 °C
Operating Humidity Range: 2 to 98 %
Storage Temperature Range: -30 to 80 °C
Storage Humidity Range: 2 to 98 %
Storage Duration: 2 Years
– Energy Sources:
• 12 VDC (10-15 V)
• Over Voltage Protection Circuitry
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318-595 Capstone Project
Power Block Standard Requirements
Mechanical:
• Maximum area of the power supply board is 200 cm²
Life Cycle:
• Production Life 5 Years
• Full Warranty Period: 1 Year
• Service Strategy: Distributor Repair
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318-595 Capstone Project
Power-bus Electrical Interface signal
Power-bus 12 VDC (Power1 block)
Power1 VCC +3.3 (CPU1 block)
Power1 VCC +5 (setup block)
Power1 VCC +5 (U.I.1 block)
Power1 VCC +3.3 (RF. 1 block)
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DC Power
DC Power
DC Power
DC Power
DC Power
Input
Output
Output
Output
Output
Nominal
Voltage
12 V
3.3V
5.0V
5.0V
3.3V
Min
Voltage
10.2 V
3.1V
2.00V
4.75V
2.0V
Max
Voltage
13.8V
3.5V
6.00V
5.25V
3.4V
Nominal
Freq
60Hz
DC
DC
DC
DC
Min
Freqency
57Hz
0
0
0
0
Max
Freqency
63Hz
N/A
N/A
N/A
N/A
Max
Voltage
15.00%
5.00%
5.00%
5.00%
5.00%
Max
V-Ripple
1.8V
0.1V
1.0V
0.1V
0.1V
318-595 Capstone Project
Power1 Block Prototyping Plan
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Block
Name
Block Area
(cm2)
Total PCB
Area (cm2)
Components
components
components
Power 1
200
200
12 V DC
Electric board
Diodes, R, C
Battery
Costs
$40
318-595 Capstone Project
Block Prototyping Plan
Block
Name
Block Area
(cm2)
Total PCB
Area (cm2)
PCB
Substrate
Type
Comp
Attachment
Type
Socketed
Components
Types of
Connectors
CPU 1
121
121
Plastic pads,
no busses
Prototype board
None
0.25 headers
UI.1 Modules
121
None
None
Soldering
None
0.25 headers
Po_bus
200
200
Plastic
Soldering
None
0.25 headers
AC Adapt
Setup
60
None
Plastic pads,
no busses
Prototype board
None
0.25 headers
RF.1 Module
72.6
72.6
Plastic pads,
no busses
Soldering
None
0.25 headers
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318-595 Capstone Project
Power Block DFM Plan
Sub Circuit
Type
Applicable Worst Case Analysis Plan
(See DFM Analysis Guide)
Task 1
Task 2
Task 3
Task 4
Task 5
Task 6
Task 7
Task 8
Task 9
Task 10
Power at the Bus
DC Power
Total
parts 12
Diodes
5
Resister
5
Carbon
film
Capacitor
1
Tantalum
NPN
1
TIP31
Input
power
12 V DC
Max
Current
1500m A
Max
voltage
15 V DC
Max
Power
33.75 W
R-max
178 ohm
Carbon
film
Battery
Part
1
DC
voltage
Max
current
1500mA
Frequency
60Hz
Output
12V DC
13
R-min
10 ohm
Carbon
film
318-595 Capstone Project
Power Block DFM Plan
Sub Circuit
Type
Applicable Worst Case Analysis Plan
(See DFM Analysis Guide)
Task 1
Task 2
Task 3
Task 4
Task 5
Task 6
Task 7
Power supply
to Set up
Control # 1
Components
R,C
Safety current 30mA
+- 15%
Safety voltage 5V
+-15%
Voltage
Regulation 0.25V
+ -5%
Current
Regulation
1. 5mA
+-5%
Voltage Ripple
0. 1V
+-2%
Safety power
4. 5mW
+-15%
Power supply
to CPU # 1
Components
R,C
Safety current 25mA
+- 15%
Safety voltage 3. 3V
+-15%
Voltage
Regulation 0. 165V
+ -5%
Current
Regulation
1. 25mA +-5%
Voltage Ripple
0. 063V +-2%
Safety power
2 . 063mW
+-15%
Power supply
to U.I #1
Components
R,C
Safety current
500mA
+- 15%
Safety voltage
5V
+-15%
Voltage
Regulation
0. 25V +-5%
Current
Regulation
25mA +-5%
Voltage Ripple
0. 1V +-2%
Safety power
1 . 25W
+-15%
Power supply
to
Transceiver
#1
Components
R,C
Safety current
60mA
+- 15%
Safety voltage
3 . 3V
+-15%
Voltage
Regulation
0. 165V +-5%
Current
Regulation
3mA +-5%
Voltage Ripple
0. 063V
+-2%
Safety power
11 . 9mW
+-15%
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318-595 Capstone Project
Power Block DFM Plan
• Product Code 265089
• Price $15
• 12V / 1.2A Sealed Lead Acid Battery
• Chemistry SLA
• mah: 1.2
• Volt: 12
• Color: Black
• Weight: 1.125 lbs
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318-595 Capstone Project
Schematics Power at bus
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318-595 Capstone Project
Schematics Current at bus
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318-595 Capstone Project
EnRoute Gantt Chart
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