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BACtrack S80 Specifikace Strana 39
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36
Figure 2.5.1.1:
Spec sheet to show dim
ensions of LED.
Reprinted with
permission granted by
Fairchild Se
micond
uctor.
Figure 2.5.1.2:
Spec sheet to peak absolute ma
ximu
m ratings of LED.
Reprinted w
ith per
mission
granted by Fairchild Semiconductor.
1
2
...
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Senior Design Group 8
1
May 3, 2010
1
TABLE OF CONTENTS
2
1. Introduction
4
1.2 Motivation
5
1.3 Goals and Objectives
6
1.5 System Overview
12
2. Research and Requirements
13
2.2 System Logic
15
2.2.3 Microcontroller
20
2.3 Voltage Regulator
23
2.3.1 Requirements
24
2.4.1 USB
31
2.4.2 Serial (RS232)
32
2.4.3 Non-Standard Connector
33
2.4.4 RJ-45 (Out of Spec)
34
2.4.5 USB (Out of Spec)
35
2.4.6 Wireless
36
2.5 LEDs
37
2.6 Software
40
2.7 Interlock Device
44
2.8 Enclosure
45
Control Box Enclosure
46
Hand-held Unit Enclosure
49
2.9 Display
51
2.9.2 Dot-Matrix Display
52
2.9.3 Liquid Crystal Display
53
2.10 Alcohol Sensor
54
Fuel Cell Sensors
57
2.11 Battery
59
2.11.1 Alkaline Battery
60
2.11.4 Lithium Ion Battery
63
2.11.5 Lead Acid Battery
64
2.11.6 Zinc Nickel Battery
66
2.11.7 Battery Comparison
66
2.12 Charging Circuit
67
Colin Mitchell of
70
2.13 Airflow Measurement
74
2.13.2 Pitot Tube
75
3. Hardware Design
77
3.2.2 Wireless
83
3.2.3 Programming
83
3.2.4 Analog Sensing
85
3.3 Power Supply
86
3.4 Display
91
3.6.1 Breadboard
93
3.6.2 Perforated Board
93
3.6.3 Printed Circuit Board
93
3.8 Enclosure
97
Figure 3.8-1 Voog Concept I
98
Figure 3.8-2 Voog Concept II
99
4. Software Design
103
4.2 Communications
106
4.3 Portable Unit Software
109
4.3.1 Display Functions
110
4.4 Control Unit Software
111
5. Testing and Validation
114
5.1.3 Enclosure
115
5.1.4 Display
115
5.1.2 Gas Detection Sensor
115
5.2 Hardware Test Procedure
116
5.2.3 Verifying Enclosure
119
5.2.4 Verifying Display
119
5.3.1 Hand Held Software
122
5.3.2 Control Box Software
122
5.4 Software Test Procedure
123
5.5 System Test Procedure
124
6. Administrative Materials
129
6.2 Project Planning
130
6.2.2 Spring 2010 Semester
131
6.3 Cost Estimates
132
6.4 Bill of Materials
133
6.5 Design Team
136
Appendix A
137
A.2 Permissions
138
A.2.3 Talkingelectronics.com
139
A.2.4 Greenbatteries.com
140
A.2.5 Batteryspace.com
140
A.2.6 Sparkfun.com
141
A.2.7 reuk.co.uk
142
Thanks
143
A.2.12 SI Micro
144
A.2.13 Newhaven Display
145
A.2.14 Matrix Orbital
146
A.2.15 Phidgets
147
A.2.15 Binder USA
147
A.2.16 ST Micro
148
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