Abstract
In this paper, an online measuring device of dielectric loss angle for insulation test is introduced. Based on the detection principle of zero-cross comparison method, the device uses STM32F205RCT6 chip as the control core of signal measurement and processing, and communicates with UART interface and Zigbee module, and the hardware circuit design of signal measurement and processing is completed. It has been proved by experiments that the measuring device has high measurement accuracy and stability. In addition, after analyzing the dielectric loss angle variation curve, this paper proposes a compression recording algorithm based on curve segmentation line fitting. The simulation results show that the algorithm can effectively reduce the storage space required for recording and has certain practicability.
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