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the MCU has two analog bs from the isolation transmitter CN1 and CN2 respectively, while the bs of CN1 and CN2 are always connected with the output of the power regulation control signal, which is used to monitor the power regulation status of the intermediate frequency power supply, as the working status reference data, it is transmitted to PC communication interface by RSandard serial data bus. Research on software design of power-regulating balancer. According to the function requirement of power balance, after the main program flow chart of MCU is reset, the MCU initializes first, mainly completes the direction a / D of I / O Port Line, PWM conversion condition and so on, and then judges whether the K1 is closed or not. The open circuit indicates that the power-adjusting balancer is not connected, that is, it enters the monitoring program branch, bs the mouth line RB3, RB4, releases RL1, RL2, makes the power-adjusting signal of the two intermediate frequency power sources pass through. When the power-regulating balancer is not involved, it still needs to call the A / D conversion subroutine to convert the internal power-regulating inbation collected by the isolated transmitter into digital data, and then call the output of the serial communication subroutine,