CAJ | 학술논문

利用低沸点化学物质具有较高的饱和蒸汽压的特性，设计了一种无源轿车轮胎温度监测系统。系统中的胎温传感器将温度变化通过低沸点化学物质的饱和蒸汽压的相应变化转变为磁铁的位移信号，再利用线性霍尔传感器转变为电压信号，最后通过信号检测系统对信号进行处理和转换，实现对轮胎温度的实时监测和高温报警。通过静态实验，选定了满足胎温传感器要求的感温物质；通过动态实验，考察了报警系统的检测精确度。结果表明，系统检测相对误差绝对值≤6%，测温精度为1℃。
이용저비점화학물질구유교고적포화증기압적특성，설계료일충무원교차륜태온도감측계통。계통중적태온전감기장온도변화통과저비점화학물질적포화증기압적상응변화전변위자철적위이신호，재이용선성곽이전감기전변위전압신호，최후통과신호검측계통대신호진행처리화전환，실현대륜태온도적실시감측화고온보경。통과정태실험，선정료만족태온전감기요구적감온물질；통과동태실험，고찰료보경계통적검측정학도。결과표명，계통검측상대오차절대치≤6%，측온정도위1℃。
By utilizing the property of higher saturated vapor pressure of low-boiling point chemical sub-stances, a passive car tire temperature monitoring system is designed, in which the change of temperature in tire temperature sensor is transformed into the displacement signal of magnet through the corresponding change in satu-rated vapor pressure of chemical substance. Then the displacement signal of magnet is transformed into voltage sig-nal by linear Hall sensor, and through certain signal processing and transform, the real time monitoring and high temperature alarm of tire temperature are realized. The temperature sensing chemical substance meeting the require-ments of tire temperature sensor are selected by static test, while the detection accuracy of warning system is investi-gated by dynamic test. The results show that the system achieves a relative error no more than 6% and a temperature measuring accuracy of 1℃.