High-accuracy intelligent displacement sensor

Abstract

The invention discloses a high-accuracy intelligent displacement sensor. Circuits of the sensor comprise an information converting circuit, an operation amplifying circuit, a filter output circuit, a range changing circuit, a window voltage comparing circuit, a central processor and an LED display screen. A signal input end of the information converting circuit is connected with the sensor. An information output end of the information converting circuit is connected with a signal input end of the operation amplifying circuit. An information output end of the operation amplifying circuit is connected with the input end of the filter output circuit. A signal output end of the filter output circuit is connected with a signal input end of the range changing circuit and a signal input end of the window voltage comparing circuit respectively. A signal output end of the range changing circuit and a signal output end of the window voltage comparing circuit are connected with a signal input end of the central processor. A signal input end of the LED display screen is connected with a signal output end of the central processor. Compared with prior art, the high-accuracy intelligent displacement sensor has the advantages of being large in linear measurement range, high in accuracy and long in service life.

Description

Technical field [0001] The invention relates to a displacement sensor, in particular to a high-precision intelligent displacement sensor. Background technique [0002] There are mainly the following types of displacement sensors: capacitive position sensors, differential displacement sensors, electrosensory displacement sensors and resistance strain displacement sensors. Differential displacement sensors are generally used for small displacement measurements (a few microns to millimeters). This kind of sensor is most used in industrial measurement; resistance potentiometer [0003] The type sensor is suitable for the measurement of a large range of displacement, but the accuracy is not high; the laser displacement sensor is used for the measurement of the displacement of the precision detection system, and the measurement accuracy is high (up to 1pm) and the range can be as large as several meters. Capacitive displacement sensor is a kind of sensor that converts into capacitance c...

AI Technical Summary

Problems solved by technology

It has high sensitivity and high resolution, and can measure linear displacement changes of ±0.1um or less and angular displacements of 0.1 degrees. The output signal is relatively large, and the voltage sensitivity can generally reach hundreds of millivolts per millimeter, so it is beneficial to signal The transmission. The measurement range is ±25um-50mm, and the measurement accuracy is similar to that of the capacitive displacement transmission room sensor, but its frequency response is low, which is not suitable for high-frequency dynamic measurement

Due to hardware limitations, the existing inductive displacement sensor has a small linear measurement range and low accuracy, which can no longer meet the measurement requirements

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