Design of Digital Type Axis-Angle Sensor Based on Singlechip

The synchronizer is often used for the measurement of axis-angle because of its simple structure, reliability and high precision. But the output signal from the synchronizer is an analog signal, so it is difficult to realize digital measurement. This paper introduces a measuring circuit based on a singlechip. This circuit can produce exciting signal independently and no extra exciting power supply is needed, making the application easy. The AC signals output from the synchronizer are converted into DC signals and then measured directly by the singlechip. The measuring data, after being processed, are turned into serial data to output through a RS232 serial interface. The synchronizer equipped with the circuit will be a digital axis-angle sensor. The sensor is of high precision and reliability, low price, easy application and high practical value.