Publish Time: 2024-03-18 Origin: Site
The application of the interactive smart whiteboard in schools and companies brings a brand-new experience to the presentation. After adopting the infrared touch screen technology, the interactive smart whiteboard is easier to achieve a larger size, and the interaction is fast and convenient. Speaking of touch skills, the more popular touch skills in smart whiteboard include resistive touch technology, capacitive touch technology, infrared touch technology, electromagnetic touch technology, etc., which are applied in different fields, such as resistance and capacitance. Touch technology is widely used in mobile phones, handheld touch devices, and other small-screen touch products due to its high cost and touch precision characteristics. Electromagnetic touch technology and infrared touch technology are applied to touch products with large screens. Other touch skills on the market are derived from the above products.
Introduction to Infrared Touch Technology
High integration of infrared touch screen
Now, smart whiteboard all-in-one machine manufacturers mainly focus on infrared touch sensing skills. It is particularly favored by major manufacturers because of its low production cost, simple installation process, and free customization of dimensions. Simply put, it uses an infrared matrix covered in the X and Y directions to check and locate the user's touch. The infrared touch screen of the smart whiteboard is equipped with a circuit board frame in front of the display, and the circuit board is arranged with infrared emitting tubes and infrared receiving tubes on the four sides of the screen in one-to-one correspondence to form an infrared matrix that is interspersed in reverse. When the user touches the screen, the finger will block the two infrared rays passing through the position, so the smart whiteboard can determine the position of the touch point on the screen.
The infrared touch screen of the smart whiteboard includes a complete integrated control circuit and a set of high-precision, anti-interference infrared emitting tubes and a set of infrared receiving tubes, which are inserted in two opposite directions on the highly integrated circuit board, forming an invisible infrared grating. The intelligent control system embedded in the control circuit of the smart whiteboard continues to emit pulses to the diodes to form a grid of infrared polarized beams. When a touching object such as a finger enters the grating, it blocks the light beam. The intelligent control system of the smart whiteboard will detect the loss of light and transmit a signal to the control system to recognize the X-axis and Y-axis coordinate values. Then the positioning completes the touch effect. Infrared touch technology has been widely used in commercial display touch all-in-one machines, teaching all-in-one machines, conference all-in-one machines, and other fields due to its advantages of large size, and stable performance. For touch all-in-one computers above 32 inches, the application of infrared touch frame occupies 80% of the market.
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