Abstract
The converter is a measuring device and is used together with the displacement sensor. In view of the existing sensor transform device is susceptible to error and temperature drift effects acquisition accuracy is not high, we design a high precision transducer, multi-sensor information fusion for vehicle steering gear shaft angular displacement signal measurement, signal transformation and digital transmission. The converter has the characteristics of high precision, miniaturization and low cost. Multi-sensor information fusion high-precision converter adopts front-end signal amplifier circuit, following filter processing circuit and embedded software of microprocessor for online compensation to satisfy the requirements of high-precision transformation. The microcontroller is used as the main control chip to meet the requirements of 8-channel bipolar analog signal acquisition. Two 14-bit, 6-channel A/D chips are used to convert the bipolar analog signal in the range of ±10V, and the RS422 hardware interface circuit performs digital transmission according to the time sequence specified by the central programmer. The experimental results show that the conversion accuracy of the device can reach 0.06%, the digital signal transmission is stable, and it can be widely used in industrial production.
Highlights
Due to its special working environment, the aerospace industry has requirements for low power consumption, integration, light weight, and small size [1,2,3,4,5]
In order to verify and interpret the accuracy of the aircraft's attitude angle control in flight, a high-precision angular displacement sensor and a high-precision sensor conversion device must be installed on the aircraft to measure the attitude angle
The multi-sensor information fusion system is mainly composed of an array of distributed angular displacement sensors and an information fusion module
Summary
Due to its special working environment, the aerospace industry has requirements for low power consumption, integration, light weight, and small size [1,2,3,4,5]. Potentiometer-type angular displacement sensors are widely used by aircraft and other products because of their high accuracy, high temperature resistance, good resistance stability, low current noise and reliable contact. In order to verify and interpret the accuracy of the aircraft's attitude angle control in flight, a high-precision angular displacement sensor and a high-precision sensor conversion device must be installed on the aircraft to measure the attitude angle. The high-precision conversion device belongs to a miniaturized, high-precision, multi-parameter measuring device. It is characterized by good linearity, high measurement accuracy, stable performance, relatively high reliability. It has certain market application value and promotion prospects
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