Description
PBA800 Voltage regulation control module
PBA800 Voltage regulation control module
Module Clips Drive controller servo moto
PBA800 Voltage regulation control moduleSuitable 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
Tips for effective touch screen operation
Now you may find in many public places a computer input device that everyone uses. This is a computer
that allows users to directly operate the screen with their fingers. This type of computer is actually the touch
screen that people often talk about. Touch screens are not only suitable for China”s national conditions for
multimedia information inquiry, but also have many advantages such
as durability, fast response, space saving, and ease of communication. Using the touch screen, our users
can operate the host by simply touching the icons or text on the computer display with their fingers, making
human-computer interaction more straightforward. This technology greatly facilitates users who do not know how to
operate computers. . Touch screen technology is now used in many banks, hospitals, hotels, shopping malls,
sales halls, schools, libraries, museums, theaters, exhibitions, stations, large bookstores, tourist resorts,
communities and other large public places. So do you know how
a touch screen works? Are you familiar with touch screen operations?
Generally speaking, when we operate a touch screen, we must first touch the touch screen installed on the
front of the display with a finger or other object, and then the system locates and selects information input based
on the location of the icon or menu touched by the finger. The touch screen consists of a touch detection component
and a touch screen controller; the touch detection
component is installed in front of the display screen to detect the user”s touch position, and then sends it to the touch
screen controller; and the main function of the touch screen controller is to receive touches from the touch point detection
device information, convert it into contact
coordinates, and then send it to the CPU. It can also receive commands from the CPU and execute them. In order to
operate the touch screen efficiently, it is necessary for us to first understand the working principles of various types of touch screens:
1. Working principle of resistive touch screen
The working principle of a resistive touch screen is mainly to operate and control the screen content through
the principle of pressure sensing. The screen body of this touch screen is a multi-layer composite film that is
very compatible with the display surface, of which the first layer is glass or plexiglass.
The bottom layer, the second layer is the partition layer, and the third layer is the multi-resin surface layer. The
surface is also coated with a transparent conductive layer, and is covered with a hardened, smooth and
scratch-resistant plastic layer on the surface. The conductive layer and glass layer sensor on the surface
of the polyester
are separated by many tiny layers; the current passes through the surface layer, and when the surface layer
is lightly touched and pressed down, it touches the bottom layer, and the controller reads commensurate
currents from the four corners at the same time. and calculate the distance between finger positions. This
kind of touch screen uses two highly transparent conductive layers to form a touch screen. The distance between
the two layers is only 2.5 microns. When a finger touches the screen, the two conductive layers that are usually
insulated from each other come into contact at the touch point. Because one of the conductive layers is connected to
a 5V uniform voltage field in the Y-axis direction, the voltage of the detection layer changes from zero to Non-zero,
after the controller detects this connection, it performs A/D conversion and compares the obtained voltage value
with 5V to obtain the Y-axis coordinate of the touch point. In the same way, the X-axis coordinate is obtained. This
This is the most basic principle common to all resistive technology touch screens.
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
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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
