Baobao screens for industrial use and PCs facilitate the exchange of information between production and people. In our company, our design and engineers’ offices make use of displays with LCDs for a variety of tasks, including computer-aided manufacturing management. Our industrial displays are created to integrate with different settings and various business departments. Our industrial displays that are integrable and industrial monitors are made to meet the specific needs of customers and can be utilized in any setting after having been modernized. They can be military, naval, or industrial they can meet and be adapted to your requirements. Industrial monitors could be equipped with different touch technologies.
The industrial touch screen monitor is a device in the computer which combines the display capabilities of a display and the pointing capabilities of an instrument (such as a keyboard optical pen, or touchpad). This could limit the number of peripherals that are available on certain platforms and result in user-friendly software that is appropriate for specific functions. Touchscreens can be found in many different applications, including PDAs, GPS, MP3 players and tablets, smartphones and portable game consoles, and so on. The most modern generation of touchscreens can detect more than two levels of pressure (graphic tablet or pen) with a higher resolution and can be sensitive to more than one location (multi-touch or finger) simultaneously.
Surface Wave Technology
Surface wave technology utilizes ultrasonic waves that recirculate across the surfaces of screens. The waves create an interference pattern that changes as you move the screen. When this change in the pattern of interference is detected, it’s analyzed by the control system to determine the coordinates (x and the coordinates (x,) of the position of the pressure. The major drawback of this method is that even the tiniest scratch (even dirt or marks) that are left on the surfaces alter the basic pattern of interference and alter the accuracy of the detection in the display.
Analog resistive technology
The resistor system is comprised of a glass sheet whose surface is made conductive by the layer of Indium Tin oxide. It is then covered with the film of plastic, and the outer surface of the film is constructed using the same method. Both layers are separated with a fine, insulating layer made of spacer pins. Another layer was added to the screen’s surface to avoid scratches like scratches caused by the stylus’s edge.
If the user presses on the screen using the stylus’s tip or hand, the force applied to the screen breaks the diaphragm across the lower one at the same time and makes contact between two surfaces. The difference in resistance between the two surfaces as well as the location of the point of contact is monitored via the touchscreen controller which is then able to expose the conductor of the screen to extremely low voltages. While in usage the electrical conductivity of these two surfaces diminishes because of the micro-sparks created by the discharge that occurs at the point of contact and when used the accuracy of the detection diminishes. This method requires users to calibrate the touchpad. The recalibration process involves concealing the wear of the touchpad by spreading the most frequently used haptic zones over all the surface.
Capacitive technology
In the capacitive touch technology, there is a layer of charge accumulation made of indium (an ever-increasingly precious metal) is placed on the glass surface that is the back of the display. If the user touches the tablet using his finger, a part of the charge is transferred to the user. The discharge of the capacitor plate may cause defects that are quantifiable. The sensor is located in every corner of the board that can detect and measure the position for the location of the touchpoint at any given time. The process of processing this data is similar to the operation of the circuit for resistors.
As compared to the resistive touchscreen system, the primary benefit that the capacitive. Touch technology is the fact that it transmits light at a higher level of effectiveness. As much as 90% of light can be able to pass through the capacitive surface. Whereas the resistive touch technology has a maximum of 75% that provides greater quality images for this capacitive system.
They aren’t readily expandable to screens bigger than 20in (50 centimeters). However, they’re extremely efficient in their small size which is why they are included in many mid-range tablets and smartphones and are not common in the lower-end market.
The current flows through these wires and power is determined per wire. When contact with the conductive material, the current is changed across a variety of wires. Based on the data collected across the entire grid, and by analyzing the properties of the device. The exact location of the touch is identified. There are hundreds of locations to detect the position that the finger is in (compared to the capacitive tech. Which only had four points, aren’t four points) it is possible to determine the location of the touch across several locations.
Induction technology
Displays with induction technology are sensitive to the actions of a stylus that is specially designed. It is very similar to capacitive technology, Wacom originally developed this technology for tablets that display graphics. Apart from capacitive technology, it is also utilized in high-end tablets and touchpads. It utilizes the windings in the tablet as well as the pen. The alternating current running throughout the pen’s coil creates an electric field. As the pen moves closer to the magnetic field, it causes an excitation of the coil inside the pen. This generates the current inside, which interferes with the magnetic field on the display.
Infrared technology
Touchscreens that use infrared technology come in two forms that are very different:
- The first option uses a heat-resistant surface. This technique is frequently criticized for being slow and requires the hands to be warmed up (therefore that the response of the pen isn’t valid).
- The second type is that of arrays of infrared radiation sensors that are vertical and horizontal. If one of these infrared beams that are modulated is cut off (i.e. to prevent interference between the detectors). The detection of contact is complete.
Industrial open frame touch screen monitors are the most resistant. resistance, and are thus commonly used in military applications.
Technology for optical displays to make interactive displays
It is a relatively new technology that involves there are two (or several) cameras are located around the edges of the display (mainly at those corners). Each camera has an infrared diode. the screen’s perimeter is enclosed with the edge. (a small number of millimeters) that is covered by a retro-reflector. The light that is emitted by the diode is reflected by the mirror, and it is the pointer (or pointer) is visible as a shadow over every camera. A simple triangulation can determine the location concerning the dimensions of the pointed object. The technology is extremely affordable and suitable for large screens (maximum 120” – 3 m) It is getting more sought-after.
FTIR Technology
Reflection is the basis for FTIR (Frustrated Total Internal Refraction) technology. The angle at which the infrared light rays have to be lower than the point at which refraction takes place. If it is higher than that critical angle none of the refracted light is seen and the entire light spectrum will reflect. This is a sign of complete reflection.
The reflection is total across the entire surface. The diode that is placed near the edge of the Plexiglas plate emits continuous infrared light. The Plexiglas plate functions as a waveguide and the infrared rays are emitted at an angle that is slightly higher than the angle of critical. The angle is completely reflective of the light that passes through the board.
When fingers are set on the board it scatters radiation across all directions. This means that certain rays reflected by the fingers will hit the bottom of the boards at angles. Lower than that of the crucial angle and therefore, they will be released from the board. The rays create an infrared spot on the bottom of the board. It is visible through a special camera placed under the device.
The FTIR touch screen has the following components :
- A Plexiglas plate;
- Infrared LEDs are responsible for emitting radiation;
- Resistors that supply power to LEDs
- A projection screen that can collect the projector’s image;
- A projector;
- Silicone is an intermediary between the finger and finger;
- A camera that is infrared, specially made to capture Rays
- An optical filter specifically designed to let one wavelength pass through;
- A computer that processes the images sent by the camera.
NFI technology (Near Field Imaging)
NFI capacitors are abrasive and are adapted to the strictest technical specifications. It can detect contact with gloves or other dirty surfaces (grease paint, paint, etc. ).
The idea is to put an electrically conductive layer. Between 2 glass plates (the principle is similar to the resistance and capacitance principles). In the process, a weak electrostatic field will be created on the surface that is the glass surface when in proximity to the person who is using it.
The uniqueness of this method is the Z coordinate is also calculated. This method allows for an ultra-luminous screen. They are extremely resistant to difficult environments (intentional destruction or industries, etc.).
The iTouch application from touch System lets this principle be utilized on screens that are regular (no need for glasses plates).
Strain gauge technology
There are four gauges of strain placed on all four edges of the screen to measure. The impact that is caused by the stylus or finger tension across the display. This method can also be used to determine the (usually tiny) displacement that is caused due to pressure placed on the screen. Deformation counters are particularly advantageous for the use of haptic software on ticket. Reservation machines, that are highly susceptible to being damaged.
