CAJ | 학술논문

输/供电线的电流、温度等是电网运行和用电安全监测的重要参数，需要沿电网和伴随用电设备广泛监测。无线传感器是监测的首选，但是无线传感器的电池维护或者外接电源，限制了无线传感器应用。设计了一种自全式无线霍尔电流传感器，在同一磁路上实现传感和能量采集，利用霍尔元件传感电流，用线圈采集磁场能量为传感及数据无线发射提供电源。使用时传感器只需扣在被监测电线外包层，无需外接电源并免除电池维护，就可以持久实现无线传感。实验表明：该无线传感器的灵敏度达15．10 mV/A，可自主实现2～100 A的电流检测和无线数据传输。
수/공전선적전류、온도등시전망운행화용전안전감측적중요삼수，수요연전망화반수용전설비엄범감측。무선전감기시감측적수선，단시무선전감기적전지유호혹자외접전원，한제료무선전감기응용。설계료일충자전식무선곽이전류전감기，재동일자로상실현전감화능량채집，이용곽이원건전감전류，용선권채집자장능량위전감급수거무선발사제공전원。사용시전감기지수구재피감측전선외포층，무수외접전원병면제전지유호，취가이지구실현무선전감。실험표명：해무선전감기적령민도체15．10 mV/A，가자주실현2～100 A적전류검측화무선수거전수。
The main monitoring parameters of power grid operation and electricity safety include current and temperature of the power line,which needs to be monitored extensively along the grid and electrical equipment.Wireless sensor is the first selection for the moni-toring.However,the application of wireless sensor is limited as it requires battery maintenance or external power supply.This paper presents a self-contained wireless Hall current sensor that implements signal sensing and energy harvesting on the same magnetic circuit. The Hall element is used to detect current;the coupling winding is used to harvest magnetic energy as the power supply for the sensing and wireless data transmission.The sensor is placed embracing the monitored cord in operation,and can realize permanent wireless cur-rent sensing without battery maintenance or external power supply.The experiment results show that the sensor exhibits a sensitivity of 15.10 mV/A,and the current detection and wireless data transmission for the current from 2 A to 100 A are achieved.