The difference between a capacitive screen and a resistive screen is in itHow it works、Touch technology、Use environment、costandlife spanNext, I will explain to you in detail:
How it works
Capacitive touch: works by using the body's current induction. When the finger touches the metal layer, due to the electric field of the human body, the user and the surface of the touch screen form a coupling capacitance, which is a direct conductor for high-frequency currents, so the finger draws a small current from the contact point. This current flows out of the electrodes on the four corners of the touch screen, and the current flowing through these four electrodes is proportional to the distance of the finger to the four corners, and the controller derives the position of the touch point by accurately calculating the proportion of these four currents.
Resistive touch: It mainly realizes the operation and control of screen content through the principle of pressure sensitivity. This touchscreen body is a multi-layer composite film that fits well with the surface of the display, and when the surface layer is pressed down, it touches the bottom layer, and the controller simultaneously reads out the corresponding current from the four corners and calculates the distance of the finger position.
Touch technology
Capacitive screen: support multi-touch, fast response and sensitive response.
Resistive screen: Pressure-sensitive, can be touched with any object.
Use environment
Capacitive screen: It is easily affected by changes in ambient temperature, humidity, electric field and other factors, and we can optimize the display according to the usage scenario.
Resistive screen: The screen is not susceptible to dust, water vapor and oil stains, and can be used in lower or higher temperature environments, and can adapt to harsh environments.
cost
Capacitive screens: The cost is higher than resistive touch technology.
Resistive screen: Because the capacitive touch technology is very mature, and the structure is simple, the technical threshold is low, so the cost is low.
life span
Capacitive screen: Capacitive touch technology uses current induction to work, which has little wear and tear on the screen and a long service life.
Resistive screen: Resistive touch technology uses pressure sensitivity, which is easy to wear and tear the screen and cause damage to the touch function, and the service life is short.
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Fault 1: Touch deviation phenomenon: The position touched by the finger does not coincide with the mouse arrow.
Analysis: After installing the driver, there was no vertical touch to the bullseye center position when correcting the position.
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1. Set up groups and users
The presentation software is:
The menu bar > tools > user rights management
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1 Feature Overview
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[1] ...
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1. Clear the configuration engineering password process
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Attestation File Format:
Our company is XXX, ...
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(2) The alarm data does not reach the upper/lower limit of the alarm value;
(3) "MCGS_ALARM" is not selected for the group object.
32. ...
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First of all, there is touch technology, which is very important. At present, there are three commonly used types of touch technology for touch screens, which are resistive touch screens, capacitive touch screens, and infrared touch screens. Capacitance and resistance can not be made of large size, infrared touch screen can be made of small size, can also be made of large ...
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1. Failure regarding touch deviation
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1. Stuff preparation
1. 1 Phillips screwdriver;
2. 1 small slotted screwdriver;
3. 1 hair dryer;
4. Several transparent double-sided tapes.
Second, the old screen is dismantled
1. Use a Phillips screwdriver to remove the 6 screws on the back cover and open the back cover.
2. ...
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1. Surface acoustic wave screen
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1 Resistive touch screen
- Not afraid of water and dirt
- It has the cost advantage of small size, which is suitable for industrial control products and personal portable products
- Fear of scratches, low light transmittance, low temperature dullness
2. Surface acoustic touch screen
- New and easy to use, suitable for short-term products
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The first method:
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Kunlun Tongtai touch screen - daily maintenance of large-size infrared touch screen
1. Do not hit with metal objects.
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2. Avoid squeezing the screen with heavy objects.
Around HMI ...
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