摘要
STM32F103VET6单片机因其功耗低、外设丰富等特性,可作为磁致伸缩位移传感器的微控制单元。通过实验选取合适的铁镓合金作为磁滞伸缩位移传感器的波导丝,以功能强大的STM32F103VET6单片机为系统核心,发射指定参数的3.3 V激励脉冲,该激励脉冲经放大后加载在波导丝上从而激发出扭转波,将扭转波滤波放大。若STM32自带ADC采集到扭转波,令指定I/O发出高电平,以此高电平信号代替扭转波信号,计算从激励脉冲发出到接收高电平的时间,从而得到待测距离。
STM32F103VET6 can be used as a micro control unit of magnetostrictive displacement sensor.Through experiments,suitable fe-gallium alloy is selected as waveguide wire of magnetostrictive displacement sensor.With STM32 microcontroller as the core of the system,3.3 V excitation pulse with specified parameters is emitted,which is amplified and loaded on waveguide wire to stimulate torsion wave.The torsional waves are amplified by filtering.If STM32 collects torsional wave with A/D,make the specified I/O emit a high level signal to replace the torsional wave signal.The time from the excitation pulse to the high level is calculated to obtain the distance to be measured.
作者
耿圣博
关海静
耿景伯
王萌
王鑫
张波
Geng Shengbo;Guan Haijing;Geng Jingbo;Wang Meng;Wang Xin;Zhang Bo(Aero Geophysical Survey&Remote Sensing Center,Beijing 100083,China;Postal Savings Bank of China;Marine Disaster Reduction Center;University of Science and Technology Beijing)
出处
《单片机与嵌入式系统应用》
2020年第4期46-50,共5页
Microcontrollers & Embedded Systems
基金
中央高校基本科研业务费资金资助项目——用于地下金属目标物探测的弱磁传感器阵列算法机理研究(FRF-GF-18-020B)。
