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Speaking of touch technology, there are many solutions that can be realized. At present, the more popular touch technologies include resistance touch technology, capacitance touch technology, infrared touch technology, electromagnetic touch technology and so on. They are applied in different fields, such as resistance and capacitance touch technology. Because of their high cost and high touch accuracy, they are widely used in mobile phones, handheld touch devices and other small screen touch products. Electromagnetic touch technology and infrared touch technology are applied to large screen touch products. Of course, there are some touch technologies on the market, which are actually derived from the above products.
At present, the touch technology of large-scale multimedia all-in-one machine is mainly infrared tube touch sensing technology. It is especially favored by major manufacturers for its low production cost, simple installation process and free customization of size. What is an infrared touch box? Simply put, it uses the infrared matrix densely distributed in the X and Y directions to detect and locate the user's touch. The infrared touch screen is equipped with a circuit board outer frame in front of the display. The circuit board is arranged on four sides of the screen, and the infrared transmitting tube and infrared receiving tube correspond to each other to form a horizontal and vertical cross infrared matrix. When the user touches the screen, his finger will block the horizontal and vertical infrared rays passing through the position, so he can judge the position of the touch point on the screen. The external touch screen is a highly integrated electronic circuit integration product. The infrared touch screen includes a complete integrated control circuit, a group of high-precision and anti-interference infrared transmitting tubes and a group of infrared receiving tubes, which are cross installed in two opposite directions on the highly integrated circuit board to form an invisible infrared grating. The intelligent control system embedded in the control circuit continuously sends pulses to the diode to form an infrared deflection beam grid. When touching objects such as fingers enter the grating, the light beam is blocked. The intelligent control system will detect the change of light loss and transmit signals to the control system to confirm the x-axis and y-axis coordinate values. So as to realize the touch effect. Over the years, the quality of touch technology has a direct impact on the user experience effect of large-scale display. Through continuous independent research and development, Shenzhen Zhongdian digital display Co., Ltd. (SCT) has mastered the top infrared touch technology in the industry. And applied to the V series multimedia touch all-in-one machine produced by SCT.