Design And Implementation Of Human Computer Interaction System For Remote Control Excavator

With the development of one’s urbanization and one belt,one road construction,the demand for excavators is increasing.For the traditional excavator,the operator must sit in the cab of the excavator to work.The operator is faced with a series of problems,such as high labor intensity,dangerous operating environment and high operation difficulty.In order to further improve the intelligent degree of the excavator,reduce the labor cost,and improve the comfort and safety of driving,a human-computer interaction system for remote operation of the excavator is designed.The system can realize the transmission of basic action instructions for wireless operation of the excavator,and obtain the working state information of the excavator and record the data information of the excavator clearly and intuitively.The main contents of this paper are as follows:Firstly,by analyzing the overall structure and operation rules of the excavator,the functional requirements of each part are proposed.According to the demand analysis,combined with the actual situation of the project,the overall design scheme of the human-computer interaction system of the remote control excavator is given.The remote control part receives the instruction and sends it to the on-board controller PLC,which controls the excavator to operate,and sends the sensor data showing the status information of the excavator to the remote human-computer interaction system platform software through the wireless transmission system.The operator obtains the status information of the excavator through the remote human-computer interaction system platform software.Secondly,in the system hardware design,according to the remote control function,the remote control transmitter control panel is designed.The hardware selection of remote controller,system controller PLC and excavator sensor is designed.Using STM32 as the core processor,the wireless transmission system of airborne terminal and human-computer interaction system platform is designed and developed.The power circuit,RF module circuit and can module circuit of the wireless transmission system are designed in detail.Then the CAN network of the excavator experimental platform is built,the CAN network architecture of the system is given,and the overall configuration of the system CAN network is completed.On the basis of CAN network,human-computer interaction system software is designed,and CAN bus communication protocol of remote control system is designed.Under the development environment of Keil u Vision 5,the USART serial port program,CAN interface communication program and radio frequency module program of wireless transmission system are designed.The platform software of excavator human-computer interaction system is developed based on Qt5,which realizes the functions of CAN bus data acquisition,excavator status information display and record,excavator status alarm and real-time display of excavator posture.Finally,the experimental platform of human-computer interaction system of remote control excavator is built,and the human-computer interaction system of remote control excavator is tested.Including remote control data transmission test experiment,wireless transmission module communication distance test experiment,human-computer interaction system overall function test experiment.The experimental results show that the functions of the human-computer interaction system are normal,which verifies the feasibility of this design.