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中文摘要：
传统的汽车动力转向油泵试验台采用键盘输入和LED显示实现人机交互，这种操作界面对人员的素质要求比较高，操作不直观也不方便，降低了产品的测试速率。触摸屏具有坚固耐用、反应速度快、节省空间、易于交流等诸多优点，使人与机交互更为直截了当。基于以上原因，采用MODBUS通信协议编写单片机通信程序，实现触摸屏和单片机的通信。根据试验大纲流程设计人一机界面的画面，该界面包含手动和自动两种方式，可以实现数据显示、参数设置、自动测试、报警提示等功能。使用结果表明，该人一机界面友好，测控精度高，操作简单方便，应用前景广阔。
英文摘要：
Keyboard input and LED display are used in traditional vehicle power steering pump test bench to achieve man-machine interaction, in this interface, a high quality of personnel is required, and operation is neither visualized nor convenient, hence the rate of product testing is reduced. Touch screen has such advantages as a rugged-endurable in use, fast response, space-saving and easy to communicate, and many others, so the interaction between human and machine are made more straightforward. Based on above matters, by using MODBUS communication protocol to write single-chip communication program, the purpose of communication between the touch screen and single-chip was realized. According to the test outline process to design the man-machine interface screen, in the interface, the two modes ： manual and automatic operation was contained, and data showing, parameter setting, automatic testing, alarm and other functions could be achieved. The usage results show that this manachine interface possesses the attributes of friendliness, highly-precision in monitoring, convenient and simple in operation, therefore it has a broad application prospect,
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