Description
XVS-450-57MPI-1-10 Industrial control panel
XVS-450-57MPI-1-10 Industrial control panel
Module Clips Drive controller servo motor
Contact: Mr. Lai
Wechat:17750010683
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Introduction to the development of touch screen technology
The application of touch screens has become more and more common with the development of the information society. Currently, touch screen products have begun to form an industry in China. This article introduces the relevant basic technical knowledge about touch screens for the reference of users and industry players.
With the increasing number of multimedia information inquiries, people are talking more and more about touch screens, because as the latest computer input device, touch screens are currently the simplest, most convenient, natural and suitable for China’s multimedia information inquiry national conditions. Equipment, touch screen has many advantages such as durability, fast response, space saving, easy communication and so on. Using this technology, our users can operate the host by simply touching the icons or text on the computer display with their fingers, making human-computer interaction more straightforward. This technology greatly facilitates those who do not understand Computer operating users. This kind of human-computer interaction. It gives multimedia a new look and is a very attractive new multimedia interactive device. The application range of touch screens in our country is very broad, mainly including public information inquiries, such as business inquiries in telecommunications bureaus, tax bureaus, banks, electric power and other departments; information inquiries on urban streets; in addition, it can also be widely used in leadership offices, industrial control, Military command, electronic games, ordering songs and dishes, multimedia teaching, real estate pre-sales, etc. In the future, touch screens will also enter homes. As cities develop toward informatization and computer networks penetrate into daily life, information queries will appear in the form of touch screens that display content that can be touched. This article provides some basic technical knowledge about touch screens. I hope this content will be useful to the majority of users.
basic techniques
1. Working principle of touch screen
For operational convenience, people use touch screens instead of mice or keyboards. When working, we must first touch the touch screen installed on the front of the monitor with our fingers or other objects, and then the system locates and selects information input based on the location of the icon or menu touched by the finger. The touch screen consists of a touch detection component and a touch screen controller; the touch detection component is installed in front of the display screen to detect the user’s touch position, and then sends it to the touch screen controller; and the main function of the touch screen controller is to receive touches from the touch point detection device information, convert it into contact coordinates, and then send it to the CPU. It can also receive commands from the CPU and execute them.
2. Main types of touch screens
To distinguish touch screens from the technical principles, they can be divided into five basic categories: vector pressure sensing technology touch screen, resistive technology touch screen, capacitive technology touch screen, infrared technology touch screen, and surface acoustic wave technology touch screen. Among them, the vector pressure sensing technology touch screen has withdrawn from the stage of history. The touch screen infrared screen is cheap, but its frame is fragile and prone to light interference and distortion on curved surfaces; the capacitive screen design theory is good, but its image distortion problem is difficult to fundamentally solve; the resistive screen has accurate positioning, but its price It’s quite high, and it’s afraid of being scratched and easily damaged. The surface acoustic wave touch screen solves various defects of previous touch screens. It is clear and anti-violence and suitable for various occasions. The disadvantage is that water droplets and dust on the surface of the screen can make the touch screen dull or even stop working. According to the working principle of the touch screen and the medium for transmitting information, we divide the touch screen into four types, which are resistive type, infrared type, capacitive induction type and surface acoustic wave type. Below, the author will briefly introduce the various types of touch screens mentioned above. :
1. Resistive touch screen
The screen part of the resistive touch screen is a multi-layer composite film that is very suitable for the display surface. It is composed of a layer of glass or organic glass as the base layer, and the surface is coated with a transparent conductive layer (OTI , indium oxide), and then covered with a layer of The outer surface of the hardened, smooth and scratch-resistant plastic layer is also coated with a layer of OTI on the inner surface. There are many small (less than one thousandth of an inch) transparent isolation points between the two conductive layers to separate them and insulate them. When a finger touches the screen, a contact point appears between the two OTI conductive layers. Because one of the conductive layers is connected to a 5V uniform voltage field in the Y-axis direction, the voltage of the detection layer changes from zero to non-zero. The controller detects this After it is turned on, perform A/D conversion and compare the obtained voltage value with 5V to obtain the Y-axis coordinate of the touch point. Similarly, the X-axis coordinate can be obtained. This is the most basic principle common to resistive technology touch screens. . Resistive screens are divided into four-wire, five-wire and other multi-wire resistive touch screens according to the number of lead wires. The A side of the five-wire resistive touch screen is made of conductive glass instead of a conductive coating. The process of conductive glass greatly improves its lifespan and can increase the light transmittance.
The OTI coating of the resistive touch screen is relatively thin and easily brittle. If it is applied too thickly, it will reduce the light transmission and cause internal reflection to reduce the clarity. Although a thin plastic protective layer is added to the OTI, it is still easily affected by sharp objects. Destruction; and because it is often touched, the surface OTI will appear fine cracks or even deform after being used for a certain period of time. If one of the outer OTI points is damaged and breaks, it will lose its role as a conductor, and the life of the touch screen will not be long. However, the resistive touch screen is not affected by dust, water, and dirt.
This touch screen uses pressure sensing for control. It uses two highly transparent conductive layers to form a touch screen, and the distance between the two layers is only 2.5 microns. When a finger is pressed on the touch screen, the two conductive layers come into contact, the resistance changes, and signals are generated in the X and Y directions, which are then sent to the touch screen controller. This kind of touch screen can work in harsh environments, but its feel and light transmittance are poor. It is suitable for wearing gloves and situations where direct touch cannot be done with hands. The key to resistive touch screens lies in material technology. Commonly used transparent conductive coating materials are:
OS-HDU-A7-S Imported from Eaton’s original factory
XVS-450-57MPI-1-10 Industrial control panel
XV-303-15-C00-A00-1E Industrial control panel
STARTERKIT-XV100-PLC-CAN-RS485-EC4E Eaton touch screen
XN-PLC-CANOPEN Industrial control panel
XV-102-H4-70TWRL-10 Micro innovative touch screen
XV-442-57CQB-1-2AI Eaton touch screen
XV-152-D4-10TVRG-10 Imported from Eaton’s original factory
XV-440-10TVB-1-20 Full range touch screen EATON
XV-152-D8-10TVRC-10 Micro innovative touch screen
MK2-230-57CNN-1-10 Industrial control panel
MK2-232-57BAS-1-10 Full range touch screen EATON
XNE-GWBR-CANOPEN Full range touch screen EATON
XN-S6S-SBBSBB Micro innovative touch screen
XV-152-D6-84TVRC-10 Full range touch screen EATON
XV-232-57BAS-1-10 Imported from Eaton’s original factory
MC2-442-57CQB-1-21 Industrial control panel
XP-702-C0-84TSI-10 Eaton touch screen
XV-432-57CQB-1-10 Full range touch screen EATON
XV-303-15-C00-A00-1B Full range touch screen EATON
XP-702-D0-15TXI-10 Full range touch screen EATON
XV-102-D0-57TVR-10 Eaton touch screen
XN-2AI-PT/NI-2/3 Industrial control panel
XVS-440-10MPI-1-1U Full range touch screen EATON
XV-102-B2-35TQR-10 Micro innovative touch screen
XV-152-D8-10TVR-10 Industrial control panel
XN-2DO-24VDC-2A-P Eaton touch screen
XVC-601-GTI-10-V1-015 Industrial control panel
XV-230-57CNN-1-10 Eaton touch screen
XVS-460-15MPI-1-10 Imported from Eaton’s original factory
XV-230-57MPN-1-10(OS/CF) Eaton touch screen
MK2-230-57CNN-1-10 Full range touch screen EATON
XV-101-K42 Industrial control panel
XN-LABEL/SCHEIBE Imported from Eaton’s original factory
XV-232-57BAS-1-10(OS/CF) Full range touch screen EATON
XVS-440-10MPI-1-1U Eaton touch screen
XN-QV/4 Eaton touch screen
XVH-330-57CAN-1-10 Micro innovative touch screen
XV-252-57MPN-1-10 Micro innovative touch screen
XN-2DO-24VDC-0.5A-P Eaton touch screen
XV-440-10TVB-1-10 Imported from Eaton’s original factory
OS-FLASH-A3-X Industrial control panel
XP-503-15-A10-A00-1V Industrial control panel
XP-503-10-A10-A00-1B Imported from Eaton’s original factory
XV-152-D4-10TVR-10 Full range touch screen EATON
XN-KO/17 Eaton touch screen
XV-102-B2-35TQR-10-PLC Imported from Eaton’s original factory
XVS-440-10MPI-1-1U Imported from Eaton’s original factory
XV-102-B4-35TQRF-10 Full range touch screen EATON
XN-KO/11 Micro innovative touch screen
XN-KO/15 Eaton touch screen
XV-102-B3-35TQR-10 Industrial control panel
XN-KO/3 Eaton touch screen
STARTERKIT-XV100-PLC-MPI-DPM-RS485 Imported from Eaton’s original factory
XV-303-10-B00-A00-1B Industrial control panel
XV-303-15-C00-A00-1C Imported from Eaton’s original factory
XP-503-10-A10-A00-1B Micro innovative touch screen
XV-303-10-C00-1C Industrial control panel
XV-102-B2-35TQR-10 Micro innovative touch screen
XT-MEM-CF128M-02 Micro innovative touch screen
XP-503-10-A10-A00-1B Eaton touch screen
XV-460-57TQB-1-10VAR13 Industrial control panel
XV-152-D6-57TVR-10 Full range touch screen EATON
XVS-460-15MPI-1-10 Industrial control panel
MC2-442-57CQB-1-50 Micro innovative touch screen
XP-503-15-A10-A00-1B Imported from Eaton’s original factory
XV-440-10TVB-1-50 Imported from Eaton’s original factory
XV-102-H4-57TVRL-10 Imported from Eaton’s original factory
XV-440-10TVB-1-10 Imported from Eaton’s original factory
XV-102-D6-57TVR-10 Industrial control panel
XV-152-D8-10TVRC-10 Imported from Eaton’s original factory
XV-440-12TSB-1-10-PLC Micro innovative touch screen
XVH-330-57CAN-1-10 Industrial control panel
MC2-442-57CQB-1-21 Full range touch screen EATON
XV-232-57BAS-1-10(OS/CF) Micro innovative touch screen
XN-ANBZ-GN/GE-BED Full range touch screen EATON
XP-301-12T-10 Full range touch screen EATON
XN-2AI-U(-10/0…+10VDC) Full range touch screen EATON
XP-503-10-A10-A00-1B Industrial control panel
XV-152-D0-84TVR-10 Full range touch screen EATON
XN-QV/1 Full range touch screen EATON
XV-102-B6-35TQR-1AL-PLC Industrial control panel
XVC-601-GTI-10-DPM-V1-000 Micro innovative touch screen
XV-102-B4-35TQRG-10 Micro innovative touch screen
XV-152-D8-84TVR-10 Full range touch screen EATON
XV-432-57CQB-1-10-PLC-SET Imported from Eaton’s original factory
XV-102-H4-57TVRL-10 Industrial control panel
XV-152-D4-84TVR-10 Imported from Eaton’s original factory
XV-460-84TVB-1-10 Industrial control panel
XV-460-57TQB-1-10VAR13 Imported from Eaton’s original factory
XN-P3S-SBB Full range touch screen EATON
MC2-442-57CQB-1-1H-2 Eaton touch screen
XP-702-F0-84TSIK-10 Micro innovative touch screen
XV-152-D6-10TVR-10 Imported from Eaton’s original factory
XV-152-E6-10TVRC-10 Full range touch screen EATON
EASY-RTD-DC-43-03B1-00 Industrial control panel
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
