Abstract:

 A controller with C8051F040 as the data monitoring circuit is adopted to monitor the underwater platform's the course angle,the roll angle,the pitch angle and the depth.The platform posture data are calculated by the gyro and the depth values is obtained by transforming the simulated sensor output by C8051F040 ADC module,and these data are sent through the RS422 serial port.The application shows that the monitoring circuit meets the design requirement and is of practical value.

Key words:  posture monitoring;A D conversion;RS422 serial communication;the depth