Abstract:Designed a novel sensor transform device for the existing sensor transform devices are susceptible to accidental error and tempreature drift or other factor which caused the acquisition accuracy is not high. This deviec has the characteristics of miniaturization, low cost and high performance. Using C8051F series MCU as the main control chip, in order to meet the requirements of 8 channel bipolar analog signal acquisition, moreover taking 2 pieces 14 bit 6 channel A/D chip of AD company for transform bipolar analog signal of the range of ±10 V. Adopting the front-end siginal amplification and following filter processing circuit with software of the microprocessor to linear compensation for the requirements of high precision transformation. Taking the RS-422 chip and assembly language complete the signal digital transmission, with adjustable power conversion chip and achived through high precision resistance regulator for precision power supply requirements of the angular can reach 0.05%, at the same time the digital signal transmission is stable which can be widely used in military and industrial production in the field of high precision measurement.
