基于STM32单片机设计的非接触式电流检测控制系统  

System of non-contact current detection and control based on STM32 single chip microcomputer

作　　者：黄冬梅[1] 王树鑫 Huang Dongmei;Wang Shuxin(Mechanical and Electrical Engineering School of Harbin Vocationial and Technical College, Harbin 150080, China;Computing School of HIT, Harbin 150001, China)

机构地区：[1]哈尔滨职业技术学院机电工程学院,黑龙江哈尔滨150080 [2]哈尔滨工业大学计算机学院,黑龙江哈尔滨150001

出　　处：《无线互联科技》2019年第1期61-62,共2页Wireless Internet Technology

摘　　要：本系统基于STM32单片机设计的非接触式电流检测控制系统,通过OPA548片将所给任意信号放大,由100Ω电阻和INA128芯片进行电流电压转换放大后,利用STM32单片机对获取的电压信号以0.488μs频率采样,利用STM32单片机的FFT库,获得信号的谐波信息。测量电流信号精准,该设计可广泛应用在以STM32单片机为核心控制器件的新型仪表中,性能精准且抗干扰能力强。This system is a non-contact current detection and control system based on STM32 single chip microcomputer. It amplifiesany signal through OPA548 chip, converts and amplifies the current and voltage by 100 Ω resistance and INA128 chip. The obtainedvoltage signal is sampled at the frequency of 0.488 μs by STM 32 single chip microcomputer, and the harmonic information of the signalis obtained by the FFT library of STM 32 single chip microcomputer. The measurement of current signal is accurate. This design can bewidely used in a new instrument with STM 32 single chip microcomputer as its core control device, with accurate performance and stronganti-interference capability.

关 键 词：STM32 OPA548 自动增益控制 

分 类 号：TM933.1[电气工程—电力电子与电力传动] TP368.1[自动化与计算机技术—计算机系统结构]