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What is capacitive touch switch?
2020/12/5 17:06:12
According to the switch principle, the touch switch is divided into resistance touch switch and capacitive contact switch. Among various technologies, capacitive touch sensing technology has become the mainstream of touch sensing technology. In the keystroke scheme, it can improve the overall appearance of products. What is capacitive touch switch?
The capacitive inductive touch switch can penetrate 20 mm (glass, plastic, etc.) of insulating material shell, accurately detect the effective contacts of fingers, ensure that the sensitivity, stability and reliability of the product will not change due to the change of environmental conditions or long-term use, and has strong waterproof and anti-interference ability. It is understood that there are many kinds of multi-point tactile technology, but the following four kinds are relatively mature
1. "LLP (laser plane) technology" mainly uses infrared laser equipment to project infrared onto the screen. When the screen is blocked, infrared reflection occurs. The camera below the screen captures the reflection direction. After system analysis, it can make response.
2. "FTIR technology" will add LED light in the middle layer of the screen. When the user presses the screen, the light between the layers will produce different reflection effects. The sensor will receive the change of light and capture the user's force point, so as to make response.
3. "Touch light technology" uses projection method, infrared projection on the screen, when the screen is blocked, infrared reflection, and the camera under the screen capture the reflection direction, through the system analysis can make a response.
4. "Optical tactile technology", which is equipped with a lens at both ends of the top of the screen to receive the user's gesture changes and contact position. After calculation, the coordinates are converted into coordinates, and then the reaction is carried out.
