A Data Acquisition And Analysis System For Vehicle AMT

Automated Mechanical Transmission (AMT) is a complicated multi-input and multi-output control system. In developing the AMT, not only the selection of design project and hardware debugging, but also the adjusting and improvement of the software are all depend on the data acquisition and analysis system. So, the data acquisition and analysis system is the indispensable instrument and important part of the developing of AMT system, whose goodness or badness directly influences the performance of the system and efficiency of the developing.This thesis establishes the data acquisition and analysis system based on serial communication between the ECU of the control system and the PC. It can real time monitor the running state of the vehicle and the transmission process, can save the data acquired, also can give some performance index of the control system by analyzing the data acquired.This system used the AMT system's ECU. By adding the data transfer channel—the serial communication interface to achieve the test of the AMT system. So, it is simple in hardware structure, and makes it easier to be achieved, reduces the cost. In software, the virtual instrumentation is introduced to the development of the AMT. The software of the upper PC is compiled under the virtual instrument developing workbench, LabVIEW, which makes the graphical interfaces franker and more friendly, the operation more easily and the ability of the file management stronger. Synchronously, blocking the software makes the modification, transplant and extending easier.This thesis mainly presents the selection of the project, hardware design, and software design of the data acquisition and analysis system.