基于红外辐射原理,研制了用于高压电力设备的非接触数字式测温传感器。介绍了信号放大、滤波和传输以及传感器外壳设计和传感器的标定方法。所开发的传感器解决了高电压隔离问题,并具有较强的抗电磁干扰能力。关键词: 高压电力设备; 红外测温; 电压/ 频率变换Abstract : Based on the principle of infrared radiation ,a non2con2 tacted digital sensor which can be used on temperature measurement of high voltage power equipment is designed. The methods of signal’s amplification , filtering and transmission as well as the de2 sign of sensor’s shell and the calibration of sensor are introduced. The developed sensor has solved the problem of high2voltage isola2 tion with preferable ability of EMC.Key words : high voltage power equipment ; infrared temperature measurement ; V/ F transformation
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