摘要
针对航天器超高温及相对复杂的恶劣环境,给出了一种能够耐受2700℃高温的传感器探头结构;并且根据传感器需测量精度高的实际应用特点,提出了一种高精度的冷端补偿方法,经补偿,超高温温度传感器在全温区保持着高精度的温度测量。经传感器结构参数仿真分析可以看出,传感器通过隔热材料后,其内部温度可以下降到450℃左右。经温度试验表明:设计的传感器不仅能在超高温温度下实现温度测量且非线性误差控制在满量程的0.25%,全温区(0~2700℃)精度控制在满量程的1.5%以内,能够实现传感器在恶劣环境下的高低温高精度测量。
Aiming at ultra-high temperature and relatively complex and harsh application environment of spacecraft,an ultra-high temperature and high precision temperature sensor is proposed.A sensor probe structure which can withstand high temperature of 2700℃is presented.According to the practical application characteristics of the sensor with high measurement precision,a high-precision cold-end compensation method is proposed.Through compensation,the ultra-high temperature sensor maintains high-precision temperature measurement in the full temperature range.The simulation analysis on the sensor structure parameters show that after the sensor passes through the thermal insulation material,the internal temperature can be reduced to about 450℃.The temperature test shows that,the sensor can not only realize temperature measurement at ultra-high temperature,but also the nonlinear error is controlled to 0.25%of the full scale,the precision of the whole temperature range(0~2700℃)is controlled within 1.5%of the full scale,which can realize high and low temperature and high-precision measurement of the sensor in harsh environment.
作者
刘成利
王振廷
贺天昊
齐娜
王元委
LIU Chengli;WANG Zhenting;HE Tianhao;QI Na;WANG Yuanwei(The 49th Research Institute of China Electronics Technology Group Corporation,Harbin 150028,China)
出处
《传感器与微系统》
CSCD
北大核心
2022年第3期91-93,97,共4页
Transducer and Microsystem Technologies
关键词
超高温
冷端补偿
高精度
ultra-high temperature
cold-end compensation
high precision
