Description
XV-230-57CNN-1-10(OS/CF) Industrial control panel
XV-230-57CNN-1-10(OS/CF) Industrial control panel
Module Clips Drive controller servo motor
Contact: Mr. Lai
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The four-wire touch screen does not consider the parasitic resistance of the electrode tap leads and the circuit that drives the electrode. This resistance is not included in the ITO resistance, and the resistance fluctuates due to the influence of ambient temperature, which is likely to affect the accuracy of the calculation. Therefore, eight Wire resistive touch screen concept.
The advantage of the four-wire/eight-wire resistive touch screen is that it can not only calculate the horizontal X and Y coordinates, but also measure the longitudinal Z coordinate, that is, the pressure of the finger, through a series of methods. This is obtained by measuring the longitudinal contact resistance Rtouch. Because when contact occurs, the contact resistance is inversely proportional to the pressure. The greater the pressure, the smaller the contact resistance. The measured value of this resistance can be used to quantify the contact pressure.
The disadvantage of the four-wire/eight-wire resistive touch screen is that it is not durable enough. Long-term touch and pressure will cause damage to the device. Because the upper PET and ITO will deform every time it is touched, and the ITO material is brittle and easily damaged when deformation occurs frequently. Once the ITO layer breaks, the uniformity of conduction is destroyed, and the proportional equivalence when deriving the coordinates above no longer exists. This kind of breakage is very likely to occur when frequent
The area that was touched, such as the location of the “Confirm” key. Another disadvantage is that the ITO attached to the PET movable substrate will not be fully oxidized. Once exposed to moisture or heat, oxidation will cause the resistance to rise, which will also destroy the conductive uniformity and cause errors in coordinate calculations, that is, “drift” Phenomenon. This gave rise to the concept of five-wire resistive screens. Short Message Service Center
3. Five-wire resistive touch screen
In view of the shortcomings of the four-wire resistive touch screen, the structure of the five-wire resistive touch screen is that the X and Y electrodes are made on the ITO layer attached to the glass substrate, and the upper ITO only serves as the active electrode. The X and Y electrodes of the bottom ITO lead out UL, UR, LL, and LR from the four corners, plus the upper movable electrode, so there are five lines in total.
The advantage is that the glass substrate is relatively strong and not easily deformed, and can fully oxidize the ITO attached to it. The glass material does not absorb water, and its expansion coefficient is very close to that of ITO, so the resulting deformation will not cause damage to ITO. The upper ITO is only used as the lead-out electrode, and no current flows, so uniform conductivity is not required. Even if it is damaged due to deformation, the resistive screen will not “drift”.
The electrodes of the five-wire resistive touch screen cannot be led from the four sides by conductive strips like the four-wire resistive screen, which will cause a short circuit. The electrodes are dispersed into many resistive patterns distributed around the touch screen, and then drawn out from the four corners. The function of these patterns is to make the voltage gradient in the X and Y directions of the touch screen linear, which facilitates the measurement of coordinates.
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4. Six-wire resistive touch screen
Toshiba’s withdrawal from the notebook business is based on the five-wire resistive touch screen. The six-wire resistive touch screen adds a grounded conductive layer on the back of the glass substrate to isolate signal crosstalk from the back of the glass substrate.
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5. Seven-wire resistive touch screen
Like the four-wire resistive touch screen, the five-wire resistive touch screen does not consider the parasitic resistance of the electrode tap lead and the circuit that drives the electrode. This part of the resistance is not included in the ITO resistance and is likely to affect the accuracy of the calculation. Therefore, seven The wire resistive touch screen is based on the five-wire resistive touch screen. A wire is drawn from both ends of UL and LR to sense the actual touch screen terminal voltage, which are recorded as Vmax and Vmin respectively. The working principle is the same as the five-wire resistive touch screen.
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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
