Agricultural Vehicle CAN Bus Data Record Has The Functions Of Automatic Transmission Controller Detection Device Design

In the development and maintenance of agricultural vehicle controller products,need to collect agricultural vehicle CAN bus controller signal data analysis for automotive products,the gear box controller is the core component of automatic transmission,the function of the gearbox controller directly affects whether the agricultural vehicle can start automatically,automatic shift,variable speed and so on,so the design of the CAN bus data recording and automatic transmission controller function test as the research object,combining with CAN bus technology,the principle of FAT32 file system,embedded system the development of technology to design a CAN bus data recording device for agricultural vehicle and automatic transmission controller function test,the design of the main innovations and research contents are the following:(1)According to the need of development and customer service stage auto parts requirements,design a device can record device CAN bus data and can detect the function of TCU,taking into account the use of the environment,The device is designed to consist of two parts:device A and B.A equipment can be used alone the main function is to connect,CAN bus has been recording data in the agricultural vehicle;and the device A and B device connected via ERNI 40PIN connector becomes a detection device of AMT TCU function.(2)The power supply device of agricultural vehicle CAN bus data recording and automatic transmission controller function test,due to the different use of the environment,especially the design of two types of power supply:one kind is in the car uses the 24V car battery power supply of car;The second method is out of the car use mains power supply or dc power supply.(3)The baud rate of CAN bus in 1Kbps?1Mbps,passenger car common value is 250Kbps,500Kbps,So this design increases the ability to automatically match the baud rate.The design is based on the Infineon 16 bit xc2060x chip as the main control chip,main control chip through the built-in can module to build a CAN bus network,the vehicle controller signal recording data and the use of UltraEdit software and CANalyzer software to view the TF card records of CAN bus data;and according to the control principle of the automatic transmission controller combined with the electronic circuit,principle,through the use of various electronic components to simulate various sensor signals,automatic transmission in normal working hours and driving state input to the measured automatic transmission controller detection response actuator,the measured automatic transmission controller will detect the value to PC testing software function test automatic transmission box Labwindows/CVI controller development virtual instrument software development platform of Ni company through the can communications,and with PC The default value of the test program is consistent to determine whether the function of the automatic transmission controller is normal,and display the test process and test results.Based on the agricultural vehicle can bus vehicle test data and view the TF card to the CAN bus data,this design can record agricultural vehicle can bus data,and record the name of a file is read sixteen hexadecimal conversion according to the time;using a combination of a and B equipment and equipment through the assembly of the automatic transmission controller function test device and test software,to test the automatic transmission controller of all functional modules only need to complete the 30s test and display the test process and test results;the design has the advantages of simple operation,small volume,convenient carrying can also according to the service environment of power supply.