Interface conversion device and method of propeller type wind measurement sensor

The invention discloses an interface conversion device and method for a propeller type wind measurement sensor. The device comprises a filter circuit, a shaping circuit, a single chip microcomputer, a signal conditioning circuit, a power supply unit and a relay. The single chip microcomputer comprises a CPU (Central Processing Unit), a program memory, a data memory, an interrupt system, an I/O (Input/Output) port, a clock circuit, a timer/counter, a D/A (Digital-to-Analog) converter, an SPI (Serial Peripheral Interface) bus and a serial port, and is used for processing the filtered wind speed signal or the shaped wind direction signal; and the signal conditioning circuit comprises a pulse signal conditioning circuit, a voltage signal conditioning circuit, a current signal conditioning circuit and a digital signal conditioning circuit, and is used for conditioning the pulse signal, the voltage signal, the current signal or the digital signal and then outputting the conditioned signal. According to the device a