Research On Detection Of Electrical Parameters In Low-voltage Feed System Based On C8051F021

Low-voltage feed system is range of low voltage industrial electrical equipment or specific circuit power supply. Usually convert the signal of feed system to digital signal which microprocessor can handle. Microprocessor determines the setting value and the operating characteristics based on electrical parameters results, decide action or not by comparing the results to complete the detection.The accuracy and reliability of the detection directly affect the performance of protection devices to protect. High-precision detection technology is an important guarantee for stable operation. This paper discusses the detection techniques of electrical parameters in Low-voltage feed system.The design selected C8051F021as control core, discussed the high-precision electrical parameters detection technology in Low-voltage feed system. Mainly completed the input channel hardware design in DC and AC sampling ways single-chip structures、error analysis and EMC design.