Capacitive touch screen skills use human current to detect jobs. The capacitive touch screen is a 4-layer composite glass screen. The inner and outer surface of the glass screen and the interlayer are coated with a layer of ITO, and the outermost layer is a thin protective layer of silica glass. The interlayer ITO coating is used for the working surface, 4 edges guide 4 electrodes, and the internal ITO is used as a shielding layer to ensure an excellent working environment.
When a finger touches a metal layer, the user and the surface of the touch screen form a coupling capacitance due to the electric field of the human body. In the case of high-frequency currents, the capacitor is a direct conductor, so the finger absorbs a small current from the touch point. This current flows from the electrodes at the four corners of the touchscreen, and the current flowing through the four electrodes is proportional to the interval between the fingers and the corners. The controller correctly calculates these four current ratios to get the position of the contacts.
Because there is a partial charge on the surface, there is usually static electricity, and it is not possible to tell whether a finger or other conductor (such as a capacitive pen) is pressed against it. Rubbing it in a pocket, pressing it hard often, dust on the screen, sweating on the hands, and static electricity in the boring human body in winter will form a partial load on the screen. In addition, in addition to the static electricity caused by winter dryness, temperature is also an important factor. The conditions for the use of electric pictures are relatively strict, including temperature, humidity, etc., and theoretically the ambient temperature requirements for electric pictures are between 0 and 35. Moreover, the temperature in the northern winter is generally below 0, so there will naturally be picture problems.
Generally a forced restart is able to be resolved. Press the power button and home button for about 8 seconds to enter the force restart state. However, if it still can't be solved, it's largely due to hardware. This is generally the case with this condition. First of all, it either fell or fell not so long ago. The screen touch screen was loose, and the direct wiring went down for a while.
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Touch screen alarm display setting – Hitec touch screen
There are two recommended ways to set up the alarm display on the touch screen:
1. Place the alarm window in the template, so that when the alarm occurs, no matter which screen the alarm window is on, it will automatically pop up, so that the operator can obtain the alarm information.
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Industrial touch panel PC faults and solutions
Tablet PC, also known as industrial contact tablet, is an inductive LCD display device that can transmit keying signals such as auxiliary contacts, when touching the graphic buttons on the display screen, the haptic feedback system on the display screen can drive various connected devices according to the pre-programmed program, which can ...
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Introduction to common sense of human-machine interface - Hitec touch screen
1. What is the difference between the human-machine interface and the "touch screen" that people often say?
Strictly speaking, the two are fundamentally different. Since the "touch screen" is only a hardware part that may be used in human-machine interface products, it is a replacement for the mouse and keyboard part of the function, the installation ...
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The touch screen is unresponsive after being used for a period of time - Hitec
Problem phenomenon: A contact screen has no response after normal use for a period of time after being turned on.
Problem profiling and processing
1. Check to see if the hard drive is turned off in the "Display Energy Saving Settings" of Wlndows9x. The way to do this is to right-click on the desktop and select the "Properties" ...
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Introduction to human-machine interface technology - Hitec
Human-computer interface, the real sense of human-computer interaction method is that people will get rid of any form of interactive interface, the method of entering information is becoming more and more simple, casual, capricious, with the help of artificial intelligence and big data, you can be very intuitive, direct, comprehensive capture of human needs, and...
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Precautions for purchasing industrial tablet PC - Hitech
Industrial tablet PC, that is, industrial all-in-one computer, consists of a contact screen, a display screen, a motherboard, memory, a hard disk, an I/O interface, etc. The scale is generally 8-21 inches, and the wide temperature and wide pressure planning is selected, which can be flexibly used in harsh environments such as temperature and application space, including vehicle-mounted, self-service terminals.
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PLC and touch screen connection method
When the contact screen is connected with the PLC, in fact, the memory of the PLC is used, (the contact screen also has a small amount of memory, which is only used to store system data, that is, the screen, controls, etc.), the contact screen and the PLC communication is generally a master/slave connection, that is, the contact screen reads the data from the PLC, and after making a judgment, it is displayed in the display ...
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Hitec touch screen response failure analysis
First, the touch screen response time is very long
Problem phenomenon: A contact screen, touch the monitor screen with your fingers, and it takes a long time to react.
Problem profiling and processing
This could be a touch screen with moving water droplets, just wipe it with a dry, soft cloth ...
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Resistive screen and capacitive screen of industrial tablet PC - Hitech
There is a difference in skills
The use of capacitive screen skills is later than that of resistive screens, and the skills are more advanced than resistive screens, and the price is naturally more expensive. This is what we often see, the same equipment of industrial tablet PCs, in terms of price, but there is a big difference, part of which is because of the difference in screens.
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Touch screen dimming fault analysis and treatment method - Hitec
Touch screen dimming fault phenomenon:
The touch screen has darkened and the colors are not displayed normally, but there is no problem with the operation.
Fault profiling :
The reason for this state of affairs may be that in the 2000s ...
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Industrial touch panel PC function - Hitech
Tablet PC is a relatively simple, natural and practical new human-computer interaction skill machine and equipment, mainly for some self-ribbed business processes. There are many types, among which the industrial contact tablet PC, which brings together computer skills, network technology, sound planning, ...
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Hitec touch screen daily simple maintenance tips
1. In the daily use of the equipment, try to prevent frequent power off and off, and sudden power failure during operation will cause certain damage to electronic components and hard disk errors; In terms of power supply, keep operating in a stable voltage environment, too low voltage, too high voltage will affect the function of the equipment, and will also ...
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Analysis of the crash situation of the human-machine interface - Hitech
The human-machine interface (mainly the operation station) crashes all DCS exist to varying degrees, only with different degrees of frequency. It is also related to the length of time that DCS is used. Crash caused by hardware, showing that it can no longer recover. If the power supply voltage of the operation station is low, it is easy to make the operation station crash. Cause...
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Hitec touch screen tutorial
The touch screen interface is the same as the general interface, in addition to the touch screen interface, other user interfaces include web interface, software interface, game interface and mobile phone interface. Touchscreen interfaces have many similarities with them: Fundamentally, they are all interactive systems, and they are all ...
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Human-machine interface technology - Hitec touch screen
NaturalID: NaturalID skills can meet the explosive increase in demand for biometric sensing, from mobile payment transactions and cloud services to enterprise mobile device security, including the entire ecosystem under FIDO (Online Fast Identity Authentication).
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Common faults of Hitec touch screen and their maintenance methods
(1) Fault 1: Contact deviation
Phenomenon 1: The direction of the finger does not coincide with the mouse arrow.
Reason 1: After installing the driver, there is no vertical contact with the bullseye when calibrating the alignment.
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Precautions for the use of industrial touch film screens - Hitec
1. The resolution needs to be fixed
Every time the screen resolution of the industrial touch film screen is adjusted, there will be some shifts, and the solution is to manually adjust or restart the machine, but this frequent adjustment is not good for the machine.
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How to duplicate the program on two Hitec touch screens
TWO HITECH TOUCH SCREEN COPY PROGRAM METHODS:
1. Make a communication cable first.
HMI1 COM port HMI2 COM port
25-pin female 25-pin female
RXD 3 ...
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Hitec touch screen boot test
When the man-machine is started, the man-machine will check whether the hardware project is normal, and the results of its viewing will be displayed in the display area of the LCD.
If there is an abnormal item, it will be marked "Failed" on the right side of the project, and the ...
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Hitec touch screen knowledge and testing methods
As an input device, the touch screen has the advantages of easy to use, ruggedness, fast response time, and space saving, and the user can use it directly through the contact screen to complete the operation, without the need for a keyboard or mouse, and is very practical and widely used.
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