Touch Screen enables users to operate the host computer by touching the icons or words on the computer screen with their fingers, thus getting rid of keyboard and mouse operation and making human-computer interaction more straightforward.It is mainly used in information inquiry in public halls, office leadership, video games, singing and singing, multimedia teaching, ticket/train ticket pre-sale and so on. The products are mainly divided into capacitive touch screen, resistive touch screen and surface acoustic wave touch screen.
Industrial touch technology in industrial monitor is a new type of human-computer interaction input mode. Compared with traditional keyboard and mouse input mode, touch screen input is more intuitive. With recognition software, touch screen can also realize handwritten input. The touch screen consists of a detection component installed in front of the display screen and a touch screen controller.When a finger or other object touches a touch screen installed at the front end of the display, the touched position is detected by the touch screen controller and sent to the host through an interface (such as RS-232 serial port).Large touch screen function, multi-functional smart board and computer, projector together constitute a large touch screen, the computer screen projected to the smart board through the projector, with a pointer or finger instead of the mouse on the smart board to touch the computer, control Windows or Macintosh and its application software.Surface acoustic touch screen, the touch screen part of surface acoustic touch screen is only a transparent reinforced glass, so it can be made into a plane, cylinder or sphere, and there is no need for special coating on the surface of the touch screen. The touch screen is equipped with an ultrasonic transducer at the corner, which can send a high-frequency sound wave across the screen surface.
When a finger or other object that can absorb or block the acoustic energy touches the screen, the acoustic energy passing through the finger is partially absorbed, and the coordinate position can be determined according to the change of the receiver signal. Compared with other types of touch screen of industrial display, the mid-plane acoustic touch screen is not affected by environmental factors such as temperature, humidity, resolution, good transmittance, fast response speed and third axis response, so it is widely used.
