The development of industrial control touch screen shows the trend of specialization, multimedia, three-dimensional and large screen. With the development of the information society, people need to obtain all kinds of public information. The public information transmission system with touch screen technology as the interactive window, through better computer technology and various forms such as text, images, music, commentary, animation, video, etc., can intuitively and vividly introduce various information to people, bringing people convenient. With the rapid development of touch screen technology, the application field of touch screen will become wider and wider, and the performance will be better and better.
1. Touch pen: The touch screen operated by the touch pen is similar to a whiteboard. In addition to displaying interfaces, windows and icons, the stylus also has signature and marking functions. Compared to earlier light pens that only offered a selection menu, this stylus is much more capable.
2. Touch screen: The touch screen adopts voltage-sensing capacitive touch technology, and the screen area is large. It consists of three parts: The bottom layer is a central sensor that monitors whether the touchpad is being touched, and then processes the information. The middle layer provides interactive graphics and text, and the outer layer is a touch surface layer composed of high-strength plastic material. When a finger touches an outer surface, this information can be sent to the sensor and logged in within a thousandth of a second. In addition to being compatible with PCs, it also features high brightness, clear images, and easy interaction. Therefore, it has been applied to fixed-point information query systems (such as electronic bulletin boards), and received good results.
3. Capacitive touch screen: Since the capacitance changes with temperature, humidity or grounding conditions, its stability is poor and drift often occurs. Fear of electromagnetic field interference and drift, not suitable for use in industrial control places and interference environments. Can be used for public information queries where accuracy is less critical; it requires frequent calibration and positioning.
4. Four-wire resistive touch screen: This kind of touch screen is not afraid of dust, oil and photoelectric interference, mainly scratches. It is suitable for public places with fixed users, such as industrial control places, offices, homes, etc.
5. Five-wire resistive touch screen: It has good sensitivity and light transmittance, long service life, and is not afraid of dust, oil and photoelectric interference. It is suitable for various public places, especially industrial control places with high precision requirements.
In which scenarios are industrial touch screens used?
2022 05/09