Anti-aging system of infrared touch screen
A technology of infrared touch and touch screen, which is applied in the direction of instruments, electrical digital data processing, and input/output process of data processing, and can solve problems such as brightness reduction and sensitivity reduction
Active Publication Date: 2015-09-30
上海优熠电子科技有限公司
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Problems solved by technology
[0003] During the long-term use of the existing infrared touch screen, the infrared emitting tube and the infrared receiving tube that are in a direct relationship may suffer from the problem of reduced brightness or reduced sensitivity due to aging.
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[0024] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.
[0025] refer to figure 1 , the infrared touch screen anti-aging system includes an infrared through-beam touch screen system, the infrared through-beam touch screen system includes an infrared emitting array, an infrared receiving array, and a touch signal processing system. The infrared emitting array and the infrared receiving array are arranged on the sides of the touch area, a group of infrared emitting arrays is arranged on one side of the touch area, and a group of infrared receiving arrays are arranged on the other side of the touching area, and the infrared emitting array is opposite to the infrared receiving array. It is set that the infrared receiving tubes in the infrared receiving array receive the infrared light emitted by the infra...
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The invention relates to the field of infrared touch screens. A signal collecting circuit of an anti-aging system of an infrared touch screen is used for receiving a digital quantity jump signal of a diode and an analog signal which reflects the light intensity received by an infrared receiving diode, and the signal collecting circuit is also used for converting the analog signal which reflects the light intensity received by the infrared receiving diode into a digital quantity which is called aging parameters; the aging parameters and the digital quantity jump signal are transmitted together to a control system through a connection interface of the control system; one or more aging parameter threshold values are arranged in the control system, after the aging parameters of one or more hours are averaged, if the average exceeds the aging parameter threshold value, the control system transmits a command for controlling the output current of a driving signal output mechanism to increase, and then the light intensity of a luminous diode is improved. Through the design, the problems that the light intensity or sensitivity of the infrared luminous diode or the infrared receiving diode is reduced on account of aging can be solved.
Description
technical field [0001] The invention relates to the field of touch screens, in particular to the field of infrared touch screens. Background technique [0002] As a branch of touch screen, infrared touch screen is gradually widely used in various fields due to its advantages of convenient installation, maintenance-free, high reliability and so on. Infrared touch screens usually use a dense infrared matrix in the X and Y directions to detect and locate the user's touch. Infrared emitting tubes and infrared receiving tubes are arranged on four sides of the screen of the infrared touch screen, corresponding to each other to form an infrared matrix that crosses horizontally and vertically. When the user touches the screen, the touch point of the touch element will block the two infrared rays passing through the position, so the position of the touch point on the screen can be judged. [0003] During the long-term use of the existing infrared touch screen, the infrared emitting...
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IPC IPC(8): G06F3/042
Inventor 周爱国周全程抒一崔颖哲
Owner 上海优熠电子科技有限公司