Capacitive Sensors: Design and Applications

Front Cover
John Wiley & Sons, Sep 3, 1996 - Technology & Engineering - 320 pages
Capacitive sensors produce spectacular resolution of movement to one part in 10-10 meters and maintain exceptional long-term stability in hostile environments. They are increasingly used for a variety of jobs in consumer and industrial equipment, including wall stud sensors, keypads, lamp dimmers, micrometers, calipers, rotation encoders, and more. The most focused, authoritative book available in the field, Capacitive Sensors brings you complete information on the research, design, and production of capacitive sensors. This all-in-one source provides detailed, comprehensive coverage of key topics, including underlying theory, electrode configuration, and practical circuits. In addition, you'll find reviews of a number of tested systems never before published.

Capacitive Sensors is a must-have for product designers and mechanical and electrical engineers interested in using this fast-developing technology to get top price and performance advantages.

 

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Contents

Introduction
1
Electrostatics
6
Capacitive sensor basics
37
Circuit basics
48
Capacitive micrometers
61
Proximity detectors
66
Motion encoders
83
Multiple plate systems
105
Noise and stability
197
Hazards
214
Electret microphone
221
Accelerometer
226
StudSensor
231
Proximity detector
236
Vernier caliper
243
Graphic input tablet
250

Miscellaneous sensors
122
Circuits and components
147
Switched capacitor techniques
177
Camera positioner
257
Digital level
265
References
271

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Page 275 - New clock feedthrough cancellation technique for analogue MOS switched-capacitor circuits, Electronics Letters l 8( l ): 39-40.

About the author (1996)

Larry K. Baxter (BSEE, RPI '61), in a long career as a consulting engineer, has designed and built many products that use capacitive sensors. His expertise is in electromechanical design, analog circuit design, and embedded microcomputer systems. He has authored numerous articles on various system design projects, has more than 20 patents, and has been a founding partner in several startup companies, including ECHOlab, Inc., Kronos, Inc., and Everygame, Inc. He is now working as a consulting engineer at PictureTel, Inc. and answers e-mail at baxterl@pictel.com.

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