Autonomous controllable multifunctional electric quantity sensor structure and method

An autonomous controllable multifunctional electric quantity sensor structure is characterized in that an electric quantity sensor comprises an FPGA, an analog input signal and an on-off input signal outside the electric quantity sensor are converted into digital quantity signals through an ADC chip and an optocoupler isolation chip respectively and then sent to the FPGA, the FPGA is in communication connection with a second MCU, and the second MCU is in communication connection with the FPGA. And the second MCU calculates the effective value item of the electric quantity and returns the effective value item to the FPGA, the FPGA calculates the frequency value of the electric quantity, combines the effective value item of the electric quantity, converts the effective value item of the electric quantity into an analog quantity through the DAC chip, and outputs the analog quantity to the DEH, the AGC and the primary frequency modulation system. Changes of voltage, current, frequency and power are realized throu