Current measurement device based on TMR tunneling magnetoresistance

The invention provides a current measurement device based on TMR tunneling magnetoresistance. The device comprises a TMR chip array, a signal processing circuit, a microcontroller and a display; the TMR chip array is arranged in a space located by a measured conductor, an output end of the TMR chip array is connected with the input end of the signal processing circuit, the output end of the signalprocessing circuit is connected with the input end of the microcontroller, and a display output end of the microcontroller is connected with the input end of the display. Through above structure, thenon-contact measurement on the conductor current in a power distribution network can be realized, the power transmission line is prevented from influence and safety loophole, and the interference inthe measurement process can be effectively removed, the measurement precision is ensured, and the measurement parameter can accurately guide the security and stable running of the power grid. 本发明提供的一种基于TMR隧道磁阻的电流测量装置，包括TMR芯片阵列、