Description
15-965-1116 Micro innovative touch screen
15-965-1116 Micro innovative touch screen
Module Clips Drive controller servo motor
Contact: Mr. Lai
Wechat:17750010683
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The three corners of the sound wave screen are respectively pasted with transducers for transmitting and receiving sound waves in the X and Y directions (transducer: made of special ceramic materials, divided into transmitting transducers and receiving transducers. It controls The electrical signal sent by the device through the touch screen cable is converted into sound wave energy and the surface acoustic wave energy formed by the reflection stripes is converted into an electrical signal.), the four sides are engraved with reflection stripes that reflect surface ultrasonic waves. When a finger or soft object touches the screen, part of the sound wave energy is absorbed, thus changing the received signal. After processing by the controller, the X and Y coordinates of the touch are obtained.
6 categories let you understand the development trend analysis of touch screen
After Apple launched a series of smart terminals, the touch screen industry has developed rapidly in recent years, and related products have become hot sellers in the market. In the future, the application fields of touch display screens will become more widespread in daily life.
Analysis of touch screen types and various technology development trends
1. Types of touch screen technology
The touch screen is a positioning device that allows users to directly input coordinate information to the computer with their fingers. Like the mouse and keyboard, it is also an input device. Touch screens have many advantages such as durability, fast response, space saving, and ease of communication. Using this technology, you can operate the host by gently touching the icons or text on the computer display with your fingers, making human-computer interaction more direct. This technology greatly facilitates those who do not know how to operate computers. User. It has been widely used in control, information query and other aspects in the fields of industry, medical treatment and communication.
1. Resistive touch screen
Analog resistive screen
Analog resistive touch screen is what we usually call “resistive screen”, which is a touch screen controlled by pressure sensing. It uses two layers of ITO (indium tin oxide) plastic films plated with conductive functions. The two pieces of ITO are equipped with particle fulcrums, so that when the screen is not pressed, there is a certain gap between the two layers of ITO and is in a non-conductive state. When the operator presses the screen with his fingertip or pen tip, the pressure will cause the film to be concave, causing the ITO layer to contact the conductor due to deformation. The corresponding pressure point is then calculated by detecting the voltage changes in the X-axis and Y-axis to complete the entire screen. touch processing mechanism. Currently, there are many types of analog resistive touch screens, such as 4-wire, 5-wire, 6-wire, and 8-wire. As shown in Figure 1, the more wires, the higher the detection precision, but the cost will also increase. The resistive screen does not support multi-touch, has high power consumption, and short lifespan. At the same time, long-term use will cause detection point drift and requires calibration. However, resistive screens have simple structures and low costs. Before capacitive touch screens matured, they once occupied most of the touch screen market.
digital resistive screen
The basic principle of the digital resistive screen is similar to the analog one. Unlike the analog resistive screen, which evenly coats the ITO layer on the glass substrate, the digital resistive screen just uses a substrate with ITO stripes. The ITO stripes on the upper and lower substrates are perpendicular to each other. The digital resistive screen is more similar to a simple switch, so it is usually used as a membrane switch. Digital resistive screens enable multi-touch control.
2. Capacitive touch screen
surface capacitive
Surface capacitive touch screens sense touch behavior on the screen surface through electric field induction. Its panel is a uniformly coated ITO layer. Each of the four corners of the panel has an outlet wire connected to the controller. During operation, the surface of the touch screen generates a uniform electric field.
When a grounded object touches the screen surface, the electrodes can sense the change in charge on the screen surface and determine the coordinates of the touch point. Surface capacitive touch screens have long service life and high light transmittance, but have low resolution and do not support multi-touch. They are currently mainly used in large-size outdoor touch screens, such as public information platforms (POI) and public service (sales) platforms (POS). ) and other products.
Projected capacitive screen
Projected capacitive touch screens use electrostatic field lines emitted by touch screen electrodes for sensing. Projected capacitive sensing technology can be divided into two types: self-capacitance and interactive capacitance. Self-capacitance is also called absolute capacitance. It uses the sensed object as the other plate of the capacitance. The object induces charge between the sensing electrode and the sensed electrode, and the position is determined by detecting changes in the coupling capacitance. But if it is a single touch, through capacitance changes, there is only one set of coordinates determined in the X-axis and Y-axis directions, and the combined coordinates are also unique; if there are two points of touch on the touch screen and the two points are not in the same X direction Or in the same Y direction, if there are two coordinate projections in the X and Y directions, 4 coordinates are combined. Obviously, only two coordinates are real, and the other two are commonly known as “ghost points”. Therefore, self-capacitive screens cannot achieve true multi-touch; interactive capacitance is also called crossing capacitance, which is the capacitance generated through the coupling of adjacent electrodes. When the sensed object is close to the electric field line from one electrode to another electrode, the interaction The change in capacitance will be felt. When the horizontal electrodes send out excitation signals in sequence, all the vertical electrodes will receive the signal at the same time. In this way, the capacitance value of the intersection of all horizontal and vertical electrodes can be obtained, that is, the two-dimensional plane of the entire touch screen. Capacitor size. When human fingers approach, the local capacitance will decrease. Based on the two-dimensional capacitance change data of the touch screen, the coordinates of each touch point can be calculated. Therefore, even if there are multiple touch points on the screen, each touch point can be calculated. the real coordinates. In both types of projected capacitive sensors, the sensing capacitance can be designed in such a way that the touch of a finger is detected at any given time. The touch is not limited to one finger, but can also be Multiple fingers. Since 2007, with the great success of Apple’s iPhone and iPad series products, projected capacitive screens have begun to develop rapidly, quickly replacing resistive touch screens and becoming the mainstream touch technology in the current market.
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XN-2DO-120/230VAC-0.5A Eaton touch screen
XV-230-57MPN-1-13-1 Imported from Eaton’s original factory
XV-102-D8-57TVR-10 Eaton touch screen
STARTERKIT-XV100-PLC-CAN-RS485-EC4E Imported from Eaton’s original factory
XN-GWBR-MODBUS-TCP Imported from Eaton’s original factory
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XVM-430-65TVB-1-11 Industrial control panel
XVC-601-GTI-12-DPS-V1-000 Industrial control panel
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XV-303-10-B00-A00-1B Micro innovative touch screen
XV-102-H3-35TQRL-10 Imported from Eaton’s original factory
XV-102-D4-70TWRG-10 Eaton touch screen
XV-460-84MPI-1-10 Imported from Eaton’s original factory
XVH-342-57SKS-1-10 Full range touch screen EATON
MC2-442-57CQB-1-2A Eaton touch screen
XVS-430-10MPI-1-10 Eaton touch screen
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XNE-8DO-24VDC-0.5A-P Industrial control panel
XV-102-H3-57TVRL-10 Full range touch screen EATON
MP3010 Industrial control panel
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XVS-440-10MPI-1-1U Industrial control panel
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XVS-460-15MPI-1-10 Imported from Eaton’s original factory
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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
