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为了实现对红外探测器积分响应的自动测量,配合虚拟仪器技术搭建了一套热释电红外探测器积分响应自动测试系统。利用双绞线将测试仪器与计算机连接,以LabVIEW为开发平台编写软件测试系统,遥控测量仪器,实现计算机自动采集和处理数据实时绘制曲线,对LT-020-H型热释电红外探测器在不同调制频率下的积分响应度进行了测试并分析。在500K的黑体辐射下,探测器积分响应度达到3.5×106V/W。通过对实验结果进行分析,得到了探测器响应、黑体辐射温度以及信号调制频率之间的关系。
In order to realize the automatic measurement of the integral response of the infrared detector, a set of pyroelectric infrared detector integral response automatic testing system is built with the virtual instrument technology. The use of twisted pair test equipment and computer connection to the LabVIEW as the development platform for the preparation of software testing systems, remote control measuring instruments, real-time computer to collect and process data to draw curves, the LT-020-H pyroelectric infrared detector Integral responsivity at different modulation frequencies was tested and analyzed. At 500K black body radiation, the detector response to 3.5 × 106V / W. Through the analysis of experimental results, the relationship between detector response, blackbody radiation temperature and signal modulation frequency is obtained.