Transducers for Microprocessor Systems

1 The Role of Transducers in Microprocessor Systems 78 9.1 Applications of proximity sensing 78 9.2 Inductive and capacitative proximity sensors 79 CONTENTS vii 9.3 The Hall effect and its applications 9.4 Touch pads 9.5 Standing wave sensors 10 Data Collection Systems 10.1 Optical sensing 10.2 Se rial data input 10.3 Synchronous operation 10.4 Bar code readers 10.5 Magnetically recorded data 11 Output Transducers 11.1 Power requirements 91 11.2 Switched mode operation 1l.3 Triac and thyristor contral 11.4 Analogue outputs 11.5 Stepping motors 11.6 Future prospects Front Matter....Pages i-ix The Role of Transducers in Microprocessor Systems....Pages 1-6 Signal Representation and Coding....Pages 7-23 Microprocessor Interfaces....Pages 24-31 Transducers for Linear and Rotary Movement....Pages 32-46 Temperature Measurement....Pages 47-52 Force and Pressure Transducers....Pages 53-59 Flow Measurement....Pages 60-68 Velocity and Acceleration Measurement....Pages 69-77 Proximity Sensing....Pages 78-83 Data Collection Systems....Pages 84-90 Output Transducers....Pages 91-102 Back Matter....Pages 103-107