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When point B is touched, if there is interference at point A, the touch screen can intelligently eliminate the impact.
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Generally speaking, the infrared touch screen is a kind of principle. The infrared matrix hardware in the X and Y directions is closely placed in front of the screen to detect and locate the user's touch by constantly scanning whether there is infrared ray blocked by objects. Specifically, the circuit board and special LED tubes are designed in the metal frame, and the four sides of the screen form a cross infrared matrix one by one, and then coordinate positioning is achieved through software and algorithms.
Every time the hardware scans, if all infrared tubes are accessible and the green light is on, it means that everything is normal and there is no touch.
When there is a touch, fingers or other objects will block the horizontal and vertical infrared rays passing through the position. When the touch screen scans and finds and confirms that one infrared ray is blocked, the red light is on, indicating that there is infrared ray blocked, and there may be a touch. At the same time, immediately change to another coordinate and scan again. If another infrared ray is also blocked on the other axis, the yellow light is on, indicating that a touch is found, and report the location of the two infrared tubes that are found to be blocked to the host, The position of the touch point on the screen is determined through calculation.
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Resolution (difference) 32767*32767
Scanning frequency 70 frames/s (custom up to 90 frames / s)
Standard touch diameter > 8mm (custom minimum 3mm)
Linear error 2mm
Touch media Activation of any infrared impervious touch medium
Touch activation 0
Physical hardness mode level 7
Riot resistance Use super toughened glass, effective anti riot (optional)
Transmittance ≥ 92%, up to 100% (without glass)
Anti light interference Adopting the world's leading level 5 protection design technology, 100000 lux is highly light resistant
Working temperature -20℃ ～70℃
Storage temperature -40℃ ～80℃
Working humidity 90% RH, no condensation at 40 ℃
Storage humidity 90% RH, no condensation at 40 ℃
The service life more than 7 years
Working voltage Typical value + 5VDC, allowable range + 4.75V ～ + 5.25V
Power supply mode USB bus power supply, power ripple maximum 200mvrms
Power < 3W, working current < 500mA
Interface mode USB
Operating system Windows7\Vista\XP\2003\2000\CE、Linux、UNIX、MacOS
intellectual property right New leading embedded control chip
Core advantage All products are driverless, plug and play, global leading infrared technology; support single touch, two touch, build four touch upgrade platform
Add:Building 2, Dalshan Sanlian Industrial Zone, Tangtou Community, Shiyan Street, Bao'an District, Shenzhen, 518108, China.
Tel: +86-755-85275082
E-mail: sophia@screensled.com
Whatsapp:+8615338825322
