Infrared sensor play an important role in IR touch screen frame.
First of all,infrared sensor see infrared ray in system of infrared touch screen overlay.Infrared transmitters and infrared sensors are installed around the frame of the infrared touch screen overlay.The infrared light emitted by the infrared emitter forms a crisscut of infrared light grid in front of the screen.When object or finger touch IR touch frame,infrared sensor see a break in light.Because touch operation can block out part of the infrared,infrared sensor be acutely aware of this change in light. Secondly,infrared sensor can see location information of touch points.In the working process of the ir touch frame,by detecting the position of the occluded infrared in the grid.They use the corresponding algorithm to accurately calculate the coordinate position of the touch point on the infrared touch screen, so as to achieve accurate touch operation.
Last but not least,infrared sensor can see interference factor.In the complex environment,infrared sensor of infrared touch screen can identify or distinguish light changes caused by normal touch and other possible sources of interference.For example,when strong lights touch infrared touch screen,infrared sensor can recognize this isn’t light anomaly caused by the touch action to ensure the normal and stable operation of touch function of infrared touch screen .
