Description
MC2-442-57CQB-1-21 Full range touch screen EATON
MC2-442-57CQB-1-21 Full range touch screen EATON
Module Clips Drive controller servo moto
MC2-442-57CQB-1-21 Full range touch screen EATONSuitable for steel manufacturing, thermal power generation, hydroelectric power generation, nuclear power generation, wind power generation, gas supply, and other glass manufacturing, paper mills, mechanical manufacturing, electronic manufacturing, automotive manufacturing, aviation manufacturing, chemical manufacturing, coal mining and selection, oil and natural gas mining and selection, metal mining and selection, and non-metallic mining and selection
Design challenge nine
How to overcome the noise from low-end chargers is the ninth challenge in multi-point capacitive touch screen design. Especially in the Chinese market,
a large number of low-end chargers are chosen by users. There are two special differences between the noise generated by this type of charger and other noises: First, its noise
does not appear when there is no finger touch, it only appears when it is touched and is very strong, making an effective The touch becomes very unstable
and becomes invalid; secondly, this noise is a common mode noise that comes from the charger and is transmitted to the touch screen system through the
ground wire. It is difficult to filter out through ordinary hardware filtering. Commonly used digital filtering Its filtering effect is not ideal either. Therefore, there must be an advanced filtering method to deal
with the noise of this low-end charger .
Design Challenge 10
Signal consistency (SD). Many multi-point capacitive touch screen designers will encounter such a problem. When their design is completed,
the strength of the sample test finger touch signal meets the requirements. When they assemble the touch screen into the complete machine, or even
prepare for mass production, a small problem will suddenly appear in front of them: a handheld device using a multi-point capacitive touch screen
operates normally when held in the hand, but when it is placed On a desk, the touch functionality just doesn”t work.
This is the problem of signal consistency, or what we call signal inconsistency (Signal Disparity), or SD for short. It is caused by the inconsistency
between the amplitude of the finger signal when the touch screen is tested or when it is held in the hand and the amplitude of the finger touch signal
when it is placed on the table. The amplitude of the finger touch signal when it is placed on the table will be smaller than the amplitude of the finger
signal when testing or when it is held in the hand. When the amplitude
difference between the two is large enough, the amplitude of the finger touch signal on the table cannot reach and exceed the finger signal threshold
from time to time, and a valid touch cannot be captured. This signal inconsistency becomes severe in the case of multiple and large fingers. How to
solve the problem of signal inconsistency is the tenth challenge in the design of multi-point capacitive touch screens.
Although the ten challenges in the design of multi-point capacitive touch screens are listed above, in fact, in order to meet the increasingly
higher requirements of customers, the design of multi-point capacitive touch screens is not limited to these ten challenges. For example
in order to obtain a thinner touch screen, a lamination technology that directly coats an ITO sensing layer on the top glass (referred to as
Sensor On Lens) has been and is being implemented. This screen is tightly attached to the LCD screen, making the LCD The impact of
on-screen noise is greatest on touch screens. This makes the design of multi-point capacitive touch screens face more severe challenges.
In addition, the inability to use a stylus on a capacitive touch screen has been
a pity in the design of capacitive touch screens for a long time, and it has also been resented by the majority of capacitive touch screen users.
Because the tip of the stylus is too small, it is difficult to generate a large enough coupling capacitance on the capacitive screen like that generated
when a finger touches it. This has become the biggest inherent shortcoming compared with resistive screens. Is it really impossible to use a stylus on
a capacitive touch screen? Are the designers of multi-point capacitive touch screens really helpless and powerless about this? It not only challenges the
technical level of designers of multi-point capacitive touch screens, but also more What is challenging is their courage and wisdom! In addition, the design
of multi-point capacitive touch screens also has to face the detailed problems that may occur during the use of the touch screen, such as the donut effect of big
fingers; the face of the touch screen on the mobile phone when making a call Proximity and proximity detection. Of course, single chip, small size, and
minimal peripheral components are also the performance that must be pursued in multi-point capacitive touch screen design solutions. As multi-point
capacitive touch screens develop towards large-size screens, the design of multi-point capacitive touch screens will face more new challenges…
Contact: Mr. Lai
Wechat:17750010683
Whats app：+86 17750010683
Skype：+86 17750010683
QQ: 3221366881
3221366881@qq.com
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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
