In the operation of industrial tablet computers, due to the problems of settings or hardware, there are often unresponsive or error phenomena of touch screens. So, what are the main problems? How should we deal with it?

1. Some areas touch accurately, and some areas touch deviations.
This phenomenon is caused by the accumulation of dust or scale on the acoustic reflection fringes around the surface acoustic touch screen, which affects the transmission of acoustic signals.
Solution: Clean the touch screen, pay special attention to the sound reflection stripes on all sides of the touch screen, and disconnect the power supply of the touch screen control card when cleaning.
2. The position touched by the finger does not coincide with the mouse arrow.
This phenomenon is mainly due to the fact that after installing the driver, when correcting the position, there is no vertical touch in the center of the target center. Solution: Recalibrate the position.
When the driver is installed for the first correction, pay attention to the details of the system error. If the touch screen of the control card is not connected, check the corresponding parts according to the prompt.
Due to the technical limitations and poor environmental adaptability, especially the surface acoustic wave screen, the screen can not be used normally due to water droplets, dust and other pollution, so the touch screen also needs regular maintenance like ordinary machines. Because touch screen is a highly integrated industrial tablet computer with many kinds of electrical equipment, the following problems should be paid attention to in use and maintenance:
1) Wipe the screen with a dry cloth every day before turning on the computer.
2) Droplets or drinks falling on the screen will stop the software from responding, because the water droplets and fingers have similar characteristics and need to erase the water droplets.
3) Touch screen controller can automatically judge the dust, but too much dust will reduce the sensitivity of touch screen, just use dry cloth to wipe the screen clean.
4) Use glass cleaner to clean dirty fingerprints and grease on touch screen. Embedded Industrial Computer
5) Turn on and off the power supply strictly according to the regulation, that is, the order of turning on the power supply is: display, audio, host computer. Turn off the power supply in reverse order.
6) A large number of temporary files are generated on the hard disk. If you break points frequently or shut down windows directly without exiting, it will soon lead to hard disk errors. Therefore, it is necessary to run ScanDisk periodically to scan hard disk errors. The application program can set secret way to exit the application program and shut down windows again. For example, click on the four corners in the prescribed order.
7) Pure touch screen programs do not require a mouse cursor, which can only distract users.
8) The simplest mouse-proof mode and technical support should be chosen to suffice for the application, because complex mode needs to sacrifice delay and system resources.
9) In Windows, users have the opportunity to access other systems when starting slower applications. The solution is to modify the system.ini file: change the shell = progman.exe (under windows 3.x) or shell = explorer.exe (on windows 95) directly to the. exe file. But the application should be able to exit windows directly, otherwise the system can not exit.
10) Depending on the harsh environment, open the nose regularly to clean the reflective stripes and inner surface of the touch screen. The specific method is: open the cover plate on both sides of the machine, you can find the mechanism that loosens and fastens the front lock tongue of the machine head, and open the mechanism to loosen the lock tongue. Lift the front of the nose, you can see the touch screen control card, pull down the touch screen cable, and back the nose to remove the nose and touch screen. After carefully looking at the method of fixing the touch screen, remove the touch screen and clean it. Be careful not to use cardboard or hard cloth, and do not scratch reflective stripes. Finally, the nose is restored in reverse order and original structure.