直流大电流测量仪研究与设计
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摘要
针对当前大功率直流供电场合大电流测量困难的问题,设计了一种非接触式直流大电流测量仪。由低功耗单片机MPS430和ADC0832组成的测量系统,利用巨磁阻传感器完成对电流的采样,完成了对直流大电流的测量。经过实际测试表明,该系统能够测量0~500 A的电流,测量精度达到0.5级,测量可靠。
Aiming at the difficulties in the current for high power DC power supply occasions of heavy current measurement problems, a contactless DC current measuring instrument is designed. The current sampling is completed by using the magneto resistance sensor, and the measurement system composed of MPS430 and ADC0832 with low power consumption MCU has completed the measurement of DC large current. Through theoretical calculation analysis shows that the system is capable of measuring 0~500 A current, and the accuracy of the measurement is 0.5. The measurement results are reliable.
Aiming at the difficulties in the current for high power DC power supply occasions of heavy current measurement problems, a contactless DC current measuring instrument is designed. The current sampling is completed by using the magneto resistance sensor, and the measurement system composed of MPS430 and ADC0832 with low power consumption MCU has completed the measurement of DC large current. Through theoretical calculation analysis shows that the system is capable of measuring 0~500 A current, and the accuracy of the measurement is 0.5. The measurement results are reliable.
引文
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[2]吕炳仁.指针式万用电表中晶体管直流电流放大倍数的测量原理和误差分析[J].电子产品世界,2016,23(9):57-60.
[3]潘卫龙,彭奎,夏胜忠.基于同步电流测量的多端直流系统故障定位[J].电气自动化,2016,38(6):112-114.
[4]王营,李正坤,陈乐,等.一种可程控精密直流电流测量系统的设计[J].电测与仪表,2016,53(7):113-117.
[5]王振亚,蒋镇,严豪.直流电机电流检测电路的设计[J].电子技术与软件工程,2017(4):106-106.
[6]黄汉华,沈凉平,李宣成.基于霍尔效应的直流电流检测实验研究[J].信息通信,2016(3):58-59.
[7]王善祥,王中旭,胡军,等.基于巨磁阻效应的高压宽频大电流传感器及其抗干扰设计[J].高电压技术,2016,42(6):1715-1723.
[8]李忠晶,鞠登峰,周兴,等.基于巨磁电阻传感器的微弱电流测量方法研究[J].电测与仪表,2016,53(15):28-32.
[9]李昊阳.基于巨磁电阻传感器的电功率测量[J].中国科技纵横,2016(22).
[10]张鑫磊.非晶软磁材料的巨磁阻抗效应研究[D].兰州:兰州大学,2016.
[11]黄敬晖,郝洁,张延松,等.高灵敏巨磁阻抗小型磁传感器研制[J].传感器与微系统,2016,35(8):84-86.
[12]张存凯.30A高稳定度恒流源系统的研制[D].杭州:中国计量学院,2016.
[13]杨勇波,王海燕,羊静,等.6 k V~35 k V电能计量装置整体检定系统的研制[J].电测与仪表,2016,53(22):123-128.
[14]倪新元.变电站设计中电流互感器选择有关问题分析[J].城市建设理论研究(电子版),2016(11).