A design scheme of soil erosion monitoring system based on photocell is presented.Overall composition of system

hardware structure and software design are discussed in detail.In order to achieve automatic monitoring

the system uses photocell to acquire soil erosion.Communication between the local monitoring center and regional control module uses Modbus protocol.The system uses embedded real-time operation system μC/OS-Ⅱ to manage multiple detecting and control tasks.Function of system is tested through experiments.The establishment and practice of system provides a new method for slope soil erosion monitoring.