为解决传统接触式测温中存在的破坏温度场、装置布线不便且需要回收读数等问题, 设计了一套瞬态温度测试装置。该装置基于比色测温原理, 主要由光学系统、二象限探测器、光电放大电路以及单片机STM32组成。其中利用STM32单片机设计了无线数据传输模块, 以保证实验数据的实时传输与测试温度的实时显示, 大大削弱了测试环境的影响, 提高了装置的易用性。利用该装置在实验室环境中进行了瞬态温度的测试实验, 并与红外测温仪进行了实验结果的对比。选择了其中6个时间节点进行了测试结果的分析, 结果表明: 比色测温装置与红外测温仪的相对误差均小于1.2%, 能够满足温度测试的需求。

This paper introduces a transient temperature measurement system based on the colorimetric method in order to solve the problems of destroying the temperature field, device wiring inconvenience and needing to recover the readings in the conventional contact temperature measurement. The system is mainly composed of optical system, two-quadrant detector, optical amplifying circuit and single-chip microcomputer STM32. The wireless data transmission module is designed by using the single-chip microcomputer STM32 to ensure the real-time transmission of the experimental data and the real-time display of the measured temperature, thus the impact of the measurement environment is greatly weakened and the ease of use of the system is improved. The transient temperature experiment is carried on in the laboratory and the experimental results are compared with the infrared thermometer. In the experiment, six time nodes are selected to compare the test results. Through the analysis of the experimental results, the relative errors of both the colorimetric temperature measurement system and infrared thermometer are less than 1.2%, that can meet the requirements of the temperature measurement.