Wireless transmission of embedded mems sensor signal: an experimental study.

Tsang Tin-Tak.Thesis (M.Phil.)--Chinese University of Hong Kong, 1999.Includes bibliographical references (leaves 78-80).Abstract also in Chinese.Chapter CHAPTER ONE: --- INTRODUCTION --- p.2Literature Survey --- p.3Project overview --- p.4Chapter CHAPTER TWO: --- SENSOR --- p.6Chapter 2.1. --- Background --- p.6Chapter 2.1.1. --- Piezoresistive effect --- p.6Chapter 2.1.2. --- Wheatstone bridge --- p.7Chapter 2.2. --- Strain Gauge --- p.10Chapter 2.2.1. --- Experimental setup for strain gauge --- p.11Chapter 2.2.2. --- Position of the strain gauge --- p.12Chapter 2.2.3. --- Selection of the value for the resistor to complete the bridge --- p.13Chapter 2.3. --- Pressure sensor --- p.15Chapter 2.3.1. --- Structure of pressure sensor die --- p.15Chapter 2.3.2. --- Modeling of the pressure sensor die --- p.17Chapter 2.3.3. --- Alternative application of the pressure sensor die --- p.20Chapter CHAPTER THREE: --- WIRELESS TRANSMISSION --- p.24Chapter 3.1. --- Introduction --- p.24Chapter 3.2. --- Analogue Transmission --- p.25Chapter 3.2.1. --- Transmitter (MC2833) --- p.26Chapter 3.2.2. --- Receiver (MC13135) --- p.29Chapter 3.3. --- Digital transmission --- p.30Chapter 3.3.1. --- Advantage of using Digital transmission --- p.30Chapter 3.3.2. --- Digital Transmitter and receiver 1 (H2000 & RX2020) --- p.30Chapter 3.3.3. --- Digital Transmitter and receiver 2 (TX2) --- p.32Chapter 3.4. --- Comparison between the three sets of transmitter --- p.34Chapter 3.4.1. --- Analogue Vs Digital --- p.34Chapter 3.4.2. --- Number of components (Complexity) --- p.35Chapter 3.4.3. --- Excepted size --- p.35Chapter 3.4.4. --- Transmitting distance --- p.36Chapter 3.4.5. --- Power supply --- p.36Chapter 3.4.6. --- Conclusion --- p.36Chapter 3.5. --- The detail investigation of HX2000 and RX2020/RX2056 --- p.37Chapter 3.5.1. --- Transmitting distance --- p.37Chapter 3.5.2. --- Shape of the received signal --- p.37Chapter 3.5.3. --- Orientation of the chips --- p.39Chapter 3.5.4. --- Conclusion for the transmitter --- p.39Chapter CHAPTER FOUR: --- ENCODING AND DECODING CIRCUIT --- p.40Chapter 4.1. --- Introduction --- p.40Chapter 4.2. --- Serial binary converter (MAX 1240) --- p.40Chapter 4.2.1. --- Features of MAX1240 --- p.41Chapter 4.2.2. --- Implementation of MAX1240 --- p.43Chapter 4.2.3. --- Method to decode the signal generated by MAX1240 --- p.46Chapter 4.3. --- Voltage-to-Frequency Converter (AD654) --- p.52Chapter 4.3.1. --- Advantages of using AD654 as the A/D converter --- p.54Chapter 4.3.2. --- Disadvantages of using AD654 as the A/D converter --- p.55Chapter 4.3.3. --- Method to read the frequency --- p.56Chapter 4.4. --- Frequency counter --- p.57Chapter 4.4.1. --- Schmitt trigger NAND-gate --- p.58Chapter 4.4.2. --- Ripple counter --- p.61Chapter 4.4.3. --- Implementation of the counter --- p.63Chapter 4.5. --- Conclusion --- p.66Chapter CHAPTER FIVE: --- INTERGATION OF THE THREE COMPONENTS --- p.67Implementation of the Circuit --- p.67Chapter 5.2. --- The result before transmission --- p.70Chapter 5.2.1. --- Analysis and Discussion for the experimental result (before transmission) --- p.72Chapter 5.3. --- The result after transmission --- p.74Chapter 5.3.1. --- Analysis and Discussion for the experimental result (after transmission) --- p.76Chapter CHAPTER SIX: --- SUMMARY --- p.77BIBLIOGRAPHY --- p.7