HIGH-LOW VOLTAGE SIGNAL SAMPLING AND TRANSMISSION SYSTEM BASED ON HIGH-VOLTAGE MCU

A high-low voltage signal sampling and transmission system based on a high-voltage MCU. The system comprises a sampling unit (1), a high-voltage processing unit (2), a communication unit (3) and a low-voltage processing unit (4), wherein the sampling unit (1) comprises a bus voltage sampling module, a phase voltage measurement module and an IGBT temperature measurement module, and respectively completes conditioning and detection of measured signals at a high-voltage side to generate three analog detection signals, and transmits same to the high-voltage processing unit (2); the high-voltage processing unit (2) respectively performs, by using a high-voltage MCU, state monitoring and analog-to-digital conversion on the three analog detection signals, and outputs digital signals to the communication unit (3); the communication unit (3) transmits the three digital signals to the low-voltage processing unit (4) by using an isolated communication unit; and the low-voltage processing unit (4) realizes the sampling a