At present in the field of industrial touch display is the touch screen interactive whiteboard most popular in the application of resistive touch screen and capacitive touch screen. But in the harsh environment will be adversely affected. Capacitance screen working principle is to use the touch sensor on the screen of conductor induced voltage, resulting in a relatively current, through distance measurement touch point. In the case of low temperature, the hand skin surface moisture content is low, the dry and cold skin conductance is poor. At the same time, the environment temperature is lower, the performance of the sensor would also be affected, industrial touch monitors not good recognition touch position caused by touch screen failure. Touch screen working temperature is usually in - 5 ℃ ~ 60 ℃, especially in winter, the northern region is evident.
The impact of the resistive touch screens are smaller. On the one interactive whiteboard for schools hand, because the technology adopted by the different, through the touch screen miniature circuit connected to work, is affected by temperature. On the other hand, the technological level of resistive screen is relatively mature, adopted by the material used is withstand test and inheritances. The temperature of the resistive screen requirements between - 20 ℃ ~ 65 ℃, can satisfy most of the use of the environment.
In addition, industrial touch monitors and infrared touch screen and surface acoustic wave screens.
The precision of the infrared touch screen completely without current, voltage and electrostatic interference, suitable for all kinds of light pollution of environmental conditions. But because of the single sensor, infrared touch screen is easy 4k smart board to damage, aging, and touch interface can't suffered pollution, damaging and the maintenance of multifarious etc. Problem was limited. When the temperature is very low, occurring in the process of industrial monitor USES electrostatic adsorption dust, 75 inch smart board easy to use. Suitable for use in the field of aerospace. Show that acoustic wave touch screen resolution is too high, light transmittance can reach 92%, scratch resistance, wear resistance is the best, responsive, and the accuracy is not affected by environmental factors such as temperature, humidity. In contrast, capital cost, maintenance cost is higher also. Surface acoustic wave screens require constant maintenance, if the dust, oil and even liquid, if the contamination on the surface of touch screen, will result in a jam in the guided wave on the surface of the touch screen, the sound waves can't normal emission or cause unable to properly identify waveform change and controller. So you need to pay attention to the sanitation strictly, must often wipe the surface of the touch screen to keep its bright and clean, and makes a thorough erasing regularly. If the acoustic screen surface water vapor condensation in winter or on oil, clean up is also very trouble.
Can be widely recognised the resistance of the screen and capacitive screen is, after all, there are advantages to be recognized. Innovation d intelligent touch-screen devices, support customization, the default selection technology the most mature of 75 smart board ten touch capacitance screen, optional 5 wire resistive touch screen.
Surface acoustic wave high resolution, good light transmittance. Highly durable, good scratch resistance (relative to the degree of membrane resistance, capacitance, etc have surface). Responsive. Is not affected by environmental factors such as temperature, humidity, high resolution, long service life, maintenance good cases 50 million); High light transmittance (92%), can maintain a clear and transparent image quality; No drift, industrial reinforcement displays just install a correction; There is a third axis (that is, the pressure axis) response, now widely used in public places.