BACtrack S80 Dokumentacja Strona 120
- Strona / 148
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Oceniono. / 5. Na podstawie oceny klientów
117
order to set default values, such as the contrast, cursor position, character data,
etc. Use the application code to send a few test strings or simple integers. If they
display on the unit, basic verification is complete. Next, send several integers
consistent with the display format of BAC. If this is successful, the basic
functionality of the display has been verified.
Next, test control functionality of the backlight. If possible, test control of the
backlight by direct commands from the microcontroller, or by adjusting a timer. If
not possible, look for a pin that controls power to the backlight. Wire this pin to a
power transistor, and the transistor to the power supply. This transistor should be
controlled by the microcontroller. Verify that it is now possible to control the
backlight by flipping that particular pin on the microcontroller high or low
(depending on transistor and microcontroller configuration). If successful, the
backlight should turn on or off as expected. Lastly, measure the current while the
backlight is on. If within the expected, relatively low values, the power
consumption portion has been verified.
5.2.5 Verifying Wireless Communications
The MSP430-RF2500 target boards are pre-loaded with a test set of software to
verify communications are working between two boards. The easiest means of
testing and verifying the wireless target boards is to load the application code
provided by Texas Instruments onto each board, and allow the demo application
to run correctly. In order to do this, software must be downloaded from Texas
Instruments, and an Export-Trade agreement must be signed in order to receive
the software from TI. Once the environment is setup inside Code Composer
Studio, there are two available projects that can be configured for build. One is
called the “Main ED”, which is a simple temperature sensing device that
communicates back to the other project, the “Main AP”. Program each board with
its respective software, plug the “Main AP” board into a Windows computer, and
connect to the COM port on your computer that is associated with the debug
stick. Supply power to the “Main ED” board using the battery breakout board, and
look for data coming into the serial port of the computer. Successful
communications will be established if the lights on both boards finish an initial
round of repeated blinking between the Red and Green onboard LEDs, then
begin only blinking the Red LED. This will indicate that packets are being
transmitted from the ED to the AP, and the AP is sending back its
acknowledgement packets successfully.
5.2.6 Verifying Airflow Detection
The airflow sensor or circuitry must first be interfaced to the microcontroller or
other components in the circuit. It must then be mounted into or on the airflow
- 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
Philips CE120/55 podręczniki
Instrukcje obsługi i podręczniki użytkownika dla Odbiorniki samochodowe Philips CE120/55.
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