Description
XN-2AI-THERMO-PI Industrial control panel
XN-2AI-THERMO-PI Industrial control panel
Module Clips Drive controller servo motor
Contact: Mr. Lai
Wechat:17750010683
Whats app：+86 17750010683
Skype：+86 17750010683
QQ: 3221366881
3221366881@qq.com
3. Infrared touch screen
The infrared touch screen uses a dense infrared matrix in the X and Y directions to detect and locate the user’s touch. The infrared touch screen installs a circuit board frame in front of the display. The circuit board arranges infrared transmitting tubes and infrared receiving tubes on the four sides of the screen, corresponding to a horizontal and vertical infrared matrix. When a user touches the screen, his or her finger will block the horizontal and vertical infrared rays passing through that location, and based on this, the location of the touch point on the screen can be determined. Infrared touch screens have the advantages of high light transmittance, no interference from current, voltage and static electricity, and high touch stability. However, infrared touch screens will be affected by changes in ambient light, remote controls, high-temperature objects, incandescent lamps and other infrared sources. affect and reduce its accuracy. The early infrared touch screen appeared in 1992, with a resolution of only 32°32. It was susceptible to malfunction due to environmental interference, and required to be used in a certain light-shielding environment.
After 20 years of development, the current advanced infrared touch screen has a service life of more than 7 years under normal working conditions. When tracking finger movements, the accuracy, smoothness and tracking speed can meet the requirements, and the user’s writing can be converted very smoothly. into an image trajectory and fully supports handwriting recognition input. Infrared touch screens are mainly used in various public places, offices and industrial control places that do not require very precise requirements without infrared and strong light interference.
4. Sonic touch screen
surface acoustic wave touch screen
Surface acoustic wave touch screen is a touch technology that uses sound waves to position. At the four corners of the touch screen, sensors for transmitting and receiving sound waves in the X and Y directions are pasted respectively, and 45° reflection stripes are engraved around it. When a finger touches the screen, the finger absorbs part of the sound wave energy, and the controller detects the attenuation of the received signal at a certain moment, thereby calculating the position of the touch point.
Surface acoustic wave technology is very stable and highly accurate. In addition to the X and Y coordinates that general touch screens can respond to, it also responds to its unique third-axis Z-axis coordinate, which is the pressure axis response. With this function, each touch point is not just a digital switch with or without touch, but an analog switch that can sense force: the greater the pressure, the greater the attenuation gap on the received signal waveform. The wider and deeper it is.
Among all types of touch screens, only surface acoustic wave touch screens have the ability to sense touch pressure. The surface acoustic wave touch screen is not affected by environmental factors such as temperature and humidity. It has high clarity (extremely high resolution), good light transmittance, high durability, good scratch resistance, responsive response, long life, and can maintain clear and translucent images. Quality, no drift, only need to be calibrated once during installation, good anti-violence performance, most suitable for public information inquiry and use in offices, government agencies and public places with relatively clean environment.
Curved sonic touch screen
The curved sonic touch screen is based on sound pulse recognition technology. When an object touches the surface of the touch screen, the sensor will detect the frequency of the sound wave and determine the location of the touch point by comparing the frequency with the standard frequency pre-stored in the chip. In this way, clothing, luggage, dust and Misidentification caused by environmental factors such as insects. The sound waves of the surface type touch screen propagate along the surface of the substrate, while the sound waves of the curved type touch screen propagate inside the substrate, so the anti-environmental interference performance of the curved type is better than that of the surface type. Currently, curved touch screens are generally used in information kiosks, financial equipment and vending machines that are larger than 5 inches.
5. Optical imaging touch screen
Optical imaging touch screen is a touch technology that uses light for positioning. Light sources and light capture sensors are set at the four corners of the screen. When an object touches the surface of the touch screen, the light changes, and the touch IC module analyzes the light sensor. The change determines the location of the touch. Optical imaging touch screens have high durability, are suitable for use in complex environments, and support multi-touch. However, they are easily affected by ambient light, dust, insects, etc. and may cause misrecognition. Currently, this technology is only used in desktop monitors above 10 inches, education/training, etc.
6. Electromagnetic induction touch screen
The sensor of the electromagnetic induction touch screen is set behind the display screen. The sensor generates an electromagnetic area on the display surface. When the electronic pen touches the display surface, the sensor can determine the position of the touch point by calculating the electromagnetic change. Compared with other touch screen technologies, electromagnetic induction touch screens have the highest accuracy and resolution, low power consumption, and are thinner and lighter. They are especially suitable for use in war environments and construction environments. Currently, this technology is mainly used in the U.S. military.
Other touch screen technologies Currently on the market, in addition to the above-mentioned touch technologies, there are also various touch technologies such as pressure-sensitive, digital sound wave guide, oscillating pointer, etc., which are generally used for special purposes.
2. Development trends of touch screens 1. Embedded touch screen structure
At present, touch screens basically adopt a plug-in structure. The display module and touch module of this structure are two relatively independent devices, and then the two devices are integrated through the back-end lamination process. However, this relatively independent plug-in type The structure will affect the thickness of the product, which is not in line with the development trend of increasingly thinner and lighter touch display products. This gave rise to the concept of in-line touch screens. The in-line structure embeds the touch module into the display module, so that the two modules are integrated into one, instead of being two relatively independent devices. Compared with the traditional plug-in structure, the advantages of the in-line structure are: only 2 layers of ITO glass are required, the material cost is reduced, the light transmittance is improved, and it is thinner and lighter; there is no need for the back-end bonding of the touch screen module and the TFT module. , improve the yield rate; the touch screen group and the TFT module are produced at the same time, reducing the transportation cost of the module. In-cell touch screens can be divided into two types: In-cell technology and On-cell technology.
The definitions of the two technologies are slightly different, but the principles are similar. They both embed the touch screen in the LCD module. In-cell technology integrates the touch screen under the color filter. Since the touch sensor is placed inside the LCD panel and occupies part of the display area, part of the display effect is sacrificed. It also complicates the process and makes high yield difficult to achieve. . On-cell technology integrates a touch screen on a color filter. Instead of embedding a touch sensor inside the LCD panel, it only needs to form a simple transparent electrode between the color filter base plate and the polarizing plate, which reduces the technical difficulty. The main challenge of on-cell is the amount of noise that the display couples to the sensing layer. Touch screen components must use sophisticated algorithms to handle this noise. On-cell technology provides all the benefits of integrating a touch screen into a display, such as making the touch panel thinner and lighter and significantly reducing costs. However, the overall system cost reduction is still far less than that of Incell technology. The concept of embedded technology was first proposed by TMD in 2003. Subsequently, Sharp, Samsung, AUO, LG and other companies successively proposed this concept and published some research results. However, due to technical problems, they were not able to be commercialized. In-line touch screens have been developed for nearly 10 years, and there is still a certain distance from commercialization. However, in-line touch screens represent the future development direction of touch screens. Manufacturers that actively reserve in-line technology will compete in the future market. in a relatively favorable position.
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1.Has been engaged in industrial control industry for a long time, with a large number of inventories.
2.Industry leading, price advantage, quality assurance
3.Diversified models and products, and all kinds of rare and discontinued products
4.15 days free replacement for quality problems
ABB — AC 800M controller, Bailey, PM866 controller, IGCT silicon controlled 5SHY 3BHB01 3BHE00 3HNA00 DSQC series
BENTLY — 3500 system/proximitor, front and rear card, sensor, probe, cable 3500/20 3500/61 3500/05-01-02-00-001 3500/40M 176449-01 3500/22M 138607-01
Emerson — modbus card, power panel, controller, power supply, base, power module, switch 1C31,5X00, CE400, A6500-UM, SE3008,1B300,1X00,
EPRO — PR6423 PR6424 PR6425 PR6426 PR9376 PR9268 Data acquisition module, probe, speed sensor, vibration sensor
FOXBORO — FCP270 FCP280 FCM10EF FBM207 P0914TD CP40B FBI10E FBM02 FBM202 FBM207B P0400HE Thermal resistance input/output module, power module, communication module, cable, controller, switch
GE —- IS200/215/220/230/420 DS200/215 IC693/695/697/698 VMICPCI VMIVME 369-HI-R-M-0-0-E 469 module, air switch, I/O module, display, CPU module, power module, converter, CPU board, Ethernet module, integrated protection device, power module, gas turbine card
HIMA — F3 AIO 8/4 01 F3231 F8627X Z7116 F8621A 984862160 F3236 F6217 F7553 DI module, processor module, AI card, pulse encoder
Honeywell — Secure digital output card, program module, analog input card, CPU module, FIM card
MOOG — D136-001-007 Servo valve, controller, module
NI — SCXI-1100 PCI – PXIE – PCIE – SBRIO – CFP-AO-210 USB-6525 Information Acquisition Card, PXI Module, Card
Westinghouse — RTD thermal resistance input module, AI/AO/DI/DO module, power module, control module, base module
Woodward — 9907-164 5466-258 8200-1300 9907-149 9907-838 EASYGEN-3500-5/P2 8440-2145 Regulator, module, controller, governor
YOKOGAWA – Servo module, control cabinet node unit
Main products:
PLC, DCS, CPU module, communication module, input/output module (AI/AO/DI/DO), power module, silicon controlled module, terminal module, PXI module, servo drive, servo motor, industrial display screen, industrial keyboard, controller, encoder, regulator, sensor, I/O board, counting board, optical fiber interface board, acquisition card, gas turbine card, FIM card and other automatic spare parts
