How to choose a touch all-in-one?

文章来源:华云视界 发表时间:2019-11-08

As an input device, the touch screen has many advantages such as ruggedness, fast response, space saving, and easy communication. Users can quickly get the information they want by simply touching the machine screen with their fingers, making human-computer interaction more straightforward. As a high-tech machine, the touch-one machine has gradually replaced the status of a simple touch screen, allowing users to truly feel the characteristics of human-machine interaction. The touch-one machine is a high-tech product integrating touch screen, liquid crystal display, computer and other technologies. It is applied to all walks of life and greatly improves people's work efficiency. The touch-one machine belongs to high-tech products. In the market of mixed products, the quality must be uneven. How to choose a touch-one machine?

First, from the shell material of the machine, there are plastic, alloy, aluminum, gold, thousands of different, then which one is a good shell material? Compared with other materials, the cold-steel sheet metal material has a good anti-corrosion and anti-oxidation effect on the basis of sturdy and durable, especially in the case of hanging the wall and using the bracket, the bearing capacity of the sheet metal material is also outstanding. Good performance.

Second, the host configuration needs brand guarantee, but the higher the configuration, the better. The touch-one machine host configuration is the basis for ensuring the computer function. The composition and working principle are the same as those of the general computer. It is mainly the motherboard, CPU, memory and hard disk. When selecting the host configuration, pay attention to whether the accessory is a brand product. For specific configuration parameters, you can refer to the daily function needs, select the appropriate host configuration, if there is no professional reference, you can consult the relevant personnel of the manufacturer, select the host configuration suitable for the function, and avoid blindly pursuing high configuration.

Third, the type of LCD screen, especially the large-size touch screen integrated machine, must pay attention to the type of LCD screen, industrial-grade LED hard screen, this type of LCD screen in the application of touch screen equipment, the effect is better, in the guarantee On the basis of no dead spots and no bright spots, the heat dissipation is enhanced, and the operation and operation of the liquid crystal screen are more stable. There are many touch screens in the market, and the quality of the liquid crystal screens is not uniform, and some are shoddy. LCD screen type should pay attention to, must choose industrial grade LED hard screen.

Third, choose which touch screen is better. The choice of touch screen type is directly related to the experience of the touch one machine. Currently, the mainstream touch screen technology in the market has a capacitive touch screen and an infrared touch screen.

Capacitive sensing devices work with the body's current sensing. The capacitive touch screen is a four-layer composite glass screen. The inner surface and the interlayer of the glass screen are coated with a layer of ITO. The outermost layer is a thin layer of bauxite glass protective layer. The interlayer ITO coating is used as the working surface, and the four corners are taken out. Four electrodes, the inner layer of ITO is a shielding layer to ensure a good working environment. When the finger touches the metal layer, the user and the surface of the touch screen form a coupling capacitor due to the electric field of the human body. For high-frequency current, the capacitor is a direct conductor, and the finger sucks a small current from the contact point. This current flows from the electrodes on the four corners of the touch screen, and the current flowing through the four electrodes is proportional to the distance from the finger to the four corners. The controller calculates the position of the touch point by accurately calculating the ratio of the four currents. The surface of the capacitive touch unit is flat.

The infrared touch screen used in the infrared touch integrated machine uses an infrared matrix densely arranged in the X and Y directions to detect and locate the user's touch. The infrared touch screen is provided with a circuit board outer frame on the front side of the display, and the circuit board arranges an infrared emitting tube and an infrared receiving tube on the four sides of the screen, one by one corresponding to an infrared matrix intersecting horizontally and vertically. When the user touches the screen, the finger blocks the two infrared whiteboard lines passing through the position, so that the position of the touch point on the screen can be determined. Infrared touch screen is a highly integrated electronic circuit integration product. The infrared touch screen consists of a complete integrated control circuit, and a set of high-precision, anti-jamming infrared emitters and a set of infrared receiver tubes that are cross-mounted in two opposite directions on a highly integrated circuit board to form an invisible infrared Grating. The intelligent control system embedded in the control circuit continuously pulses the diode to form an infrared polarization beam grating, thereby realizing the function of infrared touch. Infrared touch screens are generally suitable for touch-size machines with a slightly larger size.

The above is a problem that needs attention in the hardware during the purchase process. Huayun Vision hopes to provide effective help for you in the process of purchasing a touch all-in-one.

For more information on how to purchase a touch all-in-one, call Huaysky: 400-0988728

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