受载煤岩破裂电荷传感器系统设计  

Coal and Rock Bursting Charge Loaded Sensor System Design

作　　者：杨桢[1] 辛元[1] 孙斌 李鑫[1] 邱彬[1] YANG Zhen;XIN Yuan;SUN Bin;LI Xin;QIU Bin(College of Electrical and Engineering Control,Liaoning Technical University,Huludao 125105,China;State Grid Liaoning Province Power Co.,Ltd.,Chaoyang Power Supply Company,Chaoyang 122000,China)

机构地区：[1]辽宁工程技术大学电气与控制工程学院,辽宁葫芦岛125105 [2]国网辽宁省电力有限公司朝阳供电公司,辽宁朝阳122000

出　　处：《仪表技术与传感器》2018年第3期19-22,121,共5页Instrument Technique and Sensor

基　　金：国家自然科学基金青年基金项目(51604141;61204087)

摘　　要：岩体变形破裂过程的电荷感应规律可对煤岩动力灾害进行预测预报。针对井下环境复杂,电磁干扰严重,利用高性能双运放AD823芯片研制了一种新型煤岩破裂电荷传感器,采用压电陶瓷片制作前端感应探头。对PCB板进行合理布局,采取半敷铜方式,通过集成优化硬件电路,增强电路去噪抗干扰能力。测试电荷传感器放大倍数有21.97倍,输入噪声小于2.3 ke V。实验结果显示:电荷传感器线性度好,抗干扰能力更强,可以准确测试煤岩体受载破裂变形时所产生的电荷感应信号,具有良好的应用前景。Charge induction law of rock mass deformation and failure process of coal can predict rock dynamic disaster.For complex underground environment,electromagnetic interference is serious,high performance double op-amp AD823 chip charge sensor was used to develop a new type of coal and rock burst,a piezoelectric ceramic chip was used to produce front sensing probe.To reasonable layout of PCB,half coated copper ways were used,hardware circuits were optimized by the integration,enhancing the denoising anti-jamming circuit.Test charge sensor has 21.97 times magnification,the input noise is less than 2.3 keV.Experimental results show that charge sensor has good linearity,stronger anti-interference ability,can accurately test loading burst of coal or rock deformation produced by the charge induction signal,it has good application prospect.

关 键 词：岩破裂 煤岩动力灾害 电荷感应 传感器 抗干扰 压电效应 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]