CAJ | 학술논문

环境温度对传感器的性能有影响,尤其是对气流式倾角传感器,由于敏感丝感受的是流场的变化,温度漂移更突出.该文根据气流式倾角传感器的敏感机理,利用粘性流体运动的相似理论,设计了一个补偿电路,该电路通过改变传感器内部热源的温度,使密闭腔内的流动在环境温度变化时保持流动相似,从而达到减少温度漂移的目的.试验结果表明,加上补偿电路后,电桥输出的温度漂移减少超过70%,此电路可减少环境温度对传感器性能的影响.
배경온도대전감기적성능유영향,우기시대기류식경각전감기,유우민감사감수적시류장적변화,온도표이경돌출.해문근거기류식경각전감기적민감궤리,이용점성류체운동적상사이론,설계료일개보상전로,해전로통과개변전감기내부열원적온도,사밀폐강내적류동재배경온도변화시보지류동상사,종이체도감소온도표이적목적.시험결과표명,가상보상전로후,전교수출적온도표이감소초과70%,차전로가감소배경온도대전감기성능적영향.
The influence of environmental temperature on the sensor property couldn't be neglected, especially for gas pendulum sensor. Because the hot wires sense fluid change, the drift of temperature is more apparent. According to the sensing mechanism of gas pendulum sensor and the fluid similarity, a temperature compensation circuit that made heat source temperature of inner sensor change and kept the fluid similarly was designed, and consequently the drift of temperature was decreased. Experiment results showed that by adding the compensation circuit, the drift of electrical bridge output decreased to 70%. This circuit can effectively eliminate the influence of environmental temperature on the tilt sensor.