基于ICP传感器的冲击波超压测试系统设计  

Design of Shock Wave Overpressure Measurement System Based on ICP Sensor

作　　者：薛莉[1,2] 杜红棉[1,2] 裴东兴[1,2] 何志文[1,2] 曹学友[1,2] 

机构地区：[1]中北大学电子测试技术国家重点实验室,山西太原030051 [2]中北大学仪器科学与动态测试教育部重点实验室,山西太原030051

出　　处：《仪表技术与传感器》2014年第4期7-9,13,共4页Instrument Technique and Sensor

摘　　要：新型ICP传感器将压电模块和内置电荷放大器集成于一体,应用时需要设计相应的适配电路.文中设计了应用于冲击波测试的ICP传感器适配电路,以双膜激波管为校准仪器,研究适配电路中不同恒流源供电对ICP传感器动态特性的影响.校准结果表明：在2 ～20 mA范围内,供电电流对ICP传感器的上升时间、谐振频率、超调量等动态特性无明显影响.建议在动态校准和实际应用中的适配电路最好保持一致,才能保证动态灵敏度的准确性,且应尽量避免长时间用较大电流对传感器供电.在此基础上,研制了基于ICP传感器的冲击波超压测试系统.The new ICP sensor integrates piezoelectric module and built-in charge amplifier into an organic whole, needed to design the adapter circuit in the application. This paper studied the ICP sensor adapter circuit in the shock wave measurement sys- tem, chose the double membrane shock tube as calibration instruments. It researched the impact on ICP dynamic characteristics of different circuit power. The results show ICP dynamic characteristics ： rise time, resonance frequency and impulse have no obvious influence. It＇s better to keep consistent the adapter circuit in the dynamic calibration and in the actual application to make sure the accuracy of dynamic sensitivity, and avoid larger electric current of sensor power supply for long time. According to the experimental results,the paper developed the shock wave overpressure measurement system based on ICP sensor.

关 键 词：冲击波 ICP传感器 恒流源 双膜激波管 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]