Capacitive Sensors with Pre-calculable Capacitance

The advantages of capacitance techniques formeasurement are well known and can be further enhancedby application of the design methods based on possibility tocalculate their capacitance solely from electrode dimensions.The analytical calculation of capacitance is limited only tocapacitors having cylindrical geometry of electrodes.Nevertheless by conformal mapping the majority ofcapacitive sensors can be designed. In this article besides thebasic theory an example of sensor for measurement theangle of rotation is presented

Modified Biaxial Accelerometer Framework in G-sensing Mode

This paper deals with an acceleration measuring unit, which uses two biaxial accelerometers, and compares its performance with a typical triaxial framework. In cases of small aircrafts, UAVs, robots, or terrestrial vehicle navigation units utilizing sensors manufactured by a MEMS technology are preferred due to their cost-effectiveness. In order to suppress imperfections of the measuring system (noise, drift, nonlinearities, small sensitivity) a solution based on the difference configuration of accelerometers is proposed

Methods of Evaluation of Output Signals from Resonance Accelerometers

In this paper two novel modifications of Weighted Least Square Method (WLSM) of frequency estimation suitable for evaluation of rapid changes of frequency occurring in resonance sensors are introduced and experimentally verified. The efficiency of the WLSM methods is compared to the nano-counting approach representing a substantial improvement of well-known start-stop methods of frequency measurement and estimation