Human Machine InteracTIon (HMI), also known as user interface or user interface, is a medium and dialogue interface for transferring and exchanging information between people and computers. It is an important part of computer systems. It is a medium for interaction and information exchange between the system and the user, which realizes the conversion between the internal form of information and the acceptable form of human beings. There are human-machine interfaces in all fields of human-computer information exchange.
There are human-machine interfaces in all fields of human-computer information exchange. At present, human-machine interface HMI has a wide range of applications in various fields, but in the process of using human-machine surface, often encounter many problems. In view of these situations, this paper summarizes the faults often occurring in the daily work of the human-machine interface and the methods of its handling.
First, the human-machine interface is not responding, and there is no response by pressing any part.
Processing method: In this case, first check whether the wiring interface is loose, and then check if there is a conflict between the serial port and the interrupt number. If it is caused by a conflict, adjust the resources to avoid conflicts.
Secondly, check the surface of the man-machine interface for cracks. If any cracks are found, they should be replaced in time. In addition, it is necessary to check the surface of the human-machine interface for dirt, if any, with a soft cloth. Observe that the indicator light on the control box is working properly. When it is normal, the indicator light is green and blinks.
If the above parts are normal, you can use the replacement method to check the display unit, replace the control box first, then replace the touch screen, and finally replace the host.
Second, the man-machine interface is normal but the computer cannot be operated. A human-machine interface, after testing itself, everything is normal, but after the host is connected, the computer cannot operate.
Treatment: For this situation, there are two reasons. First, it may be that the HMI driver version is too low and you need to install the latest drivers. Second, it may be that the human-machine interface control card receives the operation signal before the host starts loading the human-machine interface driver, and only needs to restart the computer after restarting the power-off.
Third, the touch is not allowed. A surface acoustic wave man-machine interface, where the finger touches the display screen, the corresponding operation cannot be completed normally.
Treatment: There are two reasons for this phenomenon. The first possibility is that the reflection fringes of the sound wave screen are slightly damaged. If this happens, it will not be completely repaired. The second possibility is that the sound wave man-machine interface is covered with dust on the reflective stripes around the screen after using it for a period of time. Wipe with a dry soft cloth, then power off, restart the computer and recalibrate.
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