【摘要】 研制了检波器线圈架磁导率测试仪,用于测量与线圈架磁导率成反比的导通频率值,根据此频率值可以选择合适的磁钢与线圈架搭配使用,以提高检波器的性能.测试系统主要由信号源模块、信号处理模块、数据采集模块和显示模块等组成,利用线圈架和电容三点式振荡电路产生正弦波信号,用ATmega128为主控芯片进行数据采集,并将检波器线圈架的导通频率值实时地在液晶屏上显示.实验表明,系统重复性好,工作可靠,操作方便.更多还原

【Abstract】 A testing instrument was developed to measure the turn-on frequency value of the geophone coil frame,which is inversely proportional to the magnetic conduction rate.According to the frequency value,suitable magnet can be chosen to match the coil frame,in order to improve the geophone property.The testing system mainly consists of signal source module,signal processing module,data acquisition module and display module.ATmega128 is the main control chip and is used for data acquisition,and frequency value can be displayed on the LCD real-time.Experimental results show that the reproducibility is good and the system is reliable and easy to operate.更多还原