Design And Implementation Of The Display And Control System Of Heavy Truck Cab Based On Can

Nowadays the display and control system of heavy truck cab in China can only display basic information of the vehicle system, and has poor the vehicle configurations compatibility.Additional, more and more fault products are returned back with unknown cause. So OEMs require a new type of display and control system of heavy truck cab imminently. The display and control system of heavy truck cab based on CAN can get almost all information of the vehicle system, and show the information to user by a kindly HMI. Further more, this display and control system can be setting system parameter in order to improve the vehicle configurations compatibility. The system diagnosis can show faults to user, and then amount of fault products with unknown cause will reduce.This thesis uses Z Company’s project of the display and control system of heavy truck cab based on CAN as background, studies key technologies of CAN and HMI based on GUI,analyzes the requirement of the display and control system, designs the overall architecture of the system, and implements three key function as an example, describes the design and implementation of the display and control system of heavy truck cab based on CAN. The display and control system has passed the system test, and has been practical running on the heavy truck of Z Company, the test and application status indicates that this system is workable and valid.In contrast to other display and control system of heavy truck cab, the main research work in this thesis has the following characteristics:1. The display and control system of heavy truck cab based on CAN can communicate with almost all ECUs in the vehicle system. Then the display and control system can get much more information of the vehicle, and they are more real-time and more exact. This point is the basic of three key functions of the display and control system.2. The HMI based on GUI make user can work effectively by the kindly HMI. The display and control system can display information and fault of the vehicle with large numbers of GUIs. And user can search for the information and fault of the vehicle,search for the journey information, set system personally, and detect the system equipment by operation the system keys.3. The setting system parameter make the display and control system more powerful the vehicle configurations compatibility. User can set system parameter by CAN and adapt the system to various the vehicle configurations withourt alteration of software and hardware. The setting system parameter not only improve the vehicle configurations compatibility but only reduce the cost of the alteration, and it can increase the efficiency of production.4. The system diagnosis can detect the hardware fault of the display and control system and the interface fault between the system and the vehicle immediately, and show the fault with some words to user. Then user can know the fault in which equipment, and call the 4S in time. Then the amount of fault products with unknown cause will reduce.