Capacitive distance sensor
A distance sensor, capacitive technology, applied in the field of miniaturized capacitive distance array sensors, can solve the problems of serious drift, uneven space, unpredictability, etc., to reduce circuit noise, simplify measurement circuits, and reduce thermal noise. Effect
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[0037] The programmable level generator is generally a digital-to-analog converter DAC. image 3 Given another implementation of the programmable level generator 1 (8), the capacitive coupling plate (3) is divided into capacitive coupling plate group 1 (31) and capacitive coupling plate group 2 (32), using Select switch group 1 (81) to switch the capacitive coupling plate group 1 (31) between the system power level and the system ground level. Use the selector switch group 2 (82) to switch the capacitive coupling plate group 2 (32) to the system power Switching between the level and the system ground level is equivalent to making the programmable level generator 1 (3) provide the selector switch group 1 (81) to provide the level with the total area of the capacitive coupling plate group 1 (31) as the weight , And the selection switch group 2 (82) provides the level with the total area of the capacitive coupling plate group 2 (32) as the weight, and the level value obtained b...
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