Industrial touch screen displays allow users to control the device host by slowly touching the icons or text on the computer monitor with their fingers, solving the problem of keyboard and mouse operations and making human-computer interaction more direct. It is specifically used in public hall information query systems, leadership work, online games, ordering songs and sweets, information-based teaching, and pre-sale of air/train tickets. The products are specifically divided into three types: capacitive touch screens, resistive touch screens, and surface acoustic touch screens.
The industrial touch screen technology in industrial grade displays is a new type of human-computer interaction input method. Compared with the past keyboard and mouse input methods, touch screen input is more direct. Paired with image recognition software, the touch screen can also perform handwriting function. The touch screen is composed of an inspection component installed in front of the display screen and a touch screen controller. When fingers or other objects touch the touch screen installed in front of the monitor, the touched area is checked by the touch screen controller and sent to the device host according to the interface (such as RS-232 serial port). The function of a large touch screen is to combine a multi-purpose smart board with a computer and projector to form a large touch screen. The computer monitor is projected onto the smart board based on the projector, and a pointer or finger is used instead of a mouse to touch the computer on the smart board, controlling Windows or Macintosh and system software. Surface acoustic touch screen, the touch screen position of the surface acoustic touch screen is just a transparent reinforced glass, so it can be made flat, cylindrical or spherical, and there is no need to add a unique coating on the surface of the touch screen. This touch screen is equipped with an ultrasonic transducer on top, which can push a type of high-frequency sound wave across the surface of the display.
When fingers or other objects that can absorb or block sound wave energy touch the display, the sound wave energy passing through the position of the fingers is absorbed by the position, and the coordinates can be clearly determined based on the receiver data signal transformation. Compared with other types of touch screens in industrial grade displays, the acoustic wave touch screen is not affected by environmental factors such as temperature and humidity, and its resolution is not affected; Good transparency, fast response speed, and a third axis response, therefore its application is becoming increasingly common.