Description
IS220PPDAH1A Digital Signal Processor
IS220PPDAH1A Digital Signal Processor
Module Clips Drive controller servo moto
IS220PPDAH1A Digital Signal ProcessorSuitable 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
2. Surface acoustic wave touch screen
The working principle of the surface acoustic wave touch screen is mainly based on the principle of
mechanical waves propagating on the surface of a certain medium. This type of touch screen emits sound waves
through sound wave generators attached to the three corners of the screen surface, and receives them through sound
wave receivers. The sound wave is then responsible for transmitting signals to the touch screen through the sound wave
reflector. The sound wave generator can send a high-frequency sound wave across the screen surface. When the finger touches
the screen, the sound wave on the contact point is
blocked, and the received signal is converted into coordinates. value, thereby determining the coordinate position of the specific
touch point. The controller can measure the size of the touch screen pressure by absorbing the sound wave energy, and at the same
time returns a coordinate value that reflects the size of the touch pressure. On the surface of the surface acoustic wave touch screen,
sound wave emitters and sound wave receivers in the X and Y directions are pasted, and 45-degree stripes reflecting sound waves are engraved
around the glass screen. The controller generates a 5.53MHZ signal and transmits it to
the transmitting transducer through the cable. The piezoelectric transmitting transducer converts it into ultrasonic energy and sends it out. After two
reflections from the reflection stripes, it propagates to the receiving transducer and is converted into an electrical signal and transmitted to the controller.
Since the surface acoustic wave touch screen is composed of a touch screen, a sound wave generator, a reflector and a sound wave receiver, especially the
sound wave sensor is not affected by environmental factors such as temperature and humidity, and has extremely high resolution, excellent scratch resistance
and long life; It has high light transmittance and can maintain clear and translucent image quality; there is no drift and only needs one correction during installation
it has a third-axis (i.e., pressure axis) response, which is most suitable for use in public places.
3. Capacitive touch screen
The capacitive touch screen is a transparent special metal conductive substance affixed to the glass surface. This inductive touch screen consists of five layers.
The first layer is the bottom layer of glass, the second layer is the conductive layer, the third layer is the glass sensing layer, the fourth layer is the anti-reflective matte
or glossy surface layer, and the fifth layer is the anti-noise protective layer. When a finger touches the surface of the capacitive touch screen, the induction
method is that the voltage is connected to the four corners
of the glass layer. The voltage is spread across the glass layer through the electrodes and a constant voltage electric field is established. At the same time, the
capacitance of the contact will change. The frequency of the oscillator connected to it changes. By measuring the frequency change, the touch position can
be determined to obtain information. Because the capacitance changes with temperature, humidity or grounding conditions, its stability is poor and drift often
occurs. In addition, when the surface layer is touched, the current flows from the four corners of the glass layer, and the controller calculates the distance from
where the current travels to the finger position,
thereby determining the exact location of the touch.
Contact: Mr. Lai
Wechat:17750010683
Whats app：+86 17750010683
Skype：+86 17750010683
QQ: 3221366881
3221366881@qq.com
https://www.xmamazon.com
https://www.xmamazon.com
https://www.plcdcs.com/
www.module-plc.com/
https://www.ymgk.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
