Operating principle Capacitive touch screen monitor: The coupling capacitance is formed between the human body static electricity and the screen, and the tiny current is absorbed when touching. The touch position is determined according to the proportion of the four corner electrode current, and the electric field induction realizes high-precision positioning and fast response. Resistive touch screen: composed of two conductive layers, by pressure contact to generate electrical signals, through the conversion circuit and the processor to calculate the X, Y coordinates to determine the touch position, response speed due to physical contact pressure slightly slow. Touch mode： Capacitive touch display: light touch is triggered, depending on the electric field capacitance change, non-conductor can not operate. Resistive touch screen: It is necessary to apply pressure to make the conductive layer contact to generate signals. Fingers, nails, stylus, etc. can be operated, and gloves can also be worn (if they can transmit pressure). Sensitivity Capacitive touch screen panel: Based on electric field induction, the capacitance changes when the finger is close to the screen, the operation response is fast, and the sliding click is smooth. Resistive touch screen: It needs a certain pressure to trigger, and insufficient pressure may cause no response to the operation, affecting the convenience. Effect of display

1,Principle and mechanism IR:Ordinary IR touch frame uses infrared emitting tube to emit infrared light, and forms an optical net above the touch frame. When the finger and other objects touch the screen to block part of the infrared light, the receiving tube detects the change of light intensity to determine the touch position. The principle is more basic and direct. Smart IR:Smart IR is also based on infrared light emission and reception, but on this basis, an intelligent processing unit is added. It can carry out intelligent analysis and processing of the received light signal, such as the use of intelligent algorithms to optimize the touch detection process, not only simple judgment of light intensity changes, but also more in-depth interpretation of touch action related information. 2,Environmental adaptation IR:Ordinary IR touch overlay is greatly affected by ambient light. In a strong light environment, such as outdoor direct sunlight or indoor strong light exposure, the infrared component in the ambient light is easy to interfere with the infrared light emitted and received by itself, resulting in a decline in touch accuracy and the possibility of misjudging the touch position. Smart IR:The intelligent IR infrared touch box can sense the ambient light condition through the intelligent light sensor. Once the interference is detected, its built-in intelligent algorithm will automatically adjust the infrared transmission power, receiver tube sensitivity and other parameters, effectively reduce the ambient light interference, so that the touch box can still work stably and accurately in complex lighting environment.

1,The entry point for touch interaction - touch screen overlay In modern technology, a touchscreen overlay is a gateway to a world of convenient interactions. It is the direct interface between our fingers and the intelligent system inside the device. Whether it is a smart phone, tablet computer or smart touch all-in-one machine, the surface of the seemingly ordinary but contains high-tech touch screen cover layer, is playing a key role in silence. 2,The core role of IR touch frame (1) Signal emission of IR touch overlay Among them, the infrared touch frame plays a very important role in the working mechanism of the touch screen cover layer. The infrared touch frame is usually composed of infrared emitting tubes distributed around the screen. These tubes continuously emit infrared light, like a thin infrared net around the screen. For example, in the smart navigation touch devices in some large shopping malls, the launching tube of the infrared touch box stably emits infrared rays and is ready to capture the user's touch action at any time. (2) Signal reception and positioning of infrared touch frame When our fingers touch the cover of the touch screen, they block part of the infrared light. And the other two sides of the screen corresponding to the infrared receiver tube will be keenly aware of changes in infrared. Through the accurate calculation and analysis of these changes, the specific position of the touch point can be determined. This is like in a dark room,

1,Store preparation and identification When a customer approaches a self-service store, the door usually opens automatically. This sensing function is often achieved with the help of infrared sensors, which can emit infrared light and detect the signal reflected back from the body to determine whether a customer is approaching. After entering the store, customers may need to perform identity authentication operations on the IR touch screen frame device at the entrance, such as scanning the member QR code or entering the mobile phone number to log in to the member account, so as to enjoy the member's rights and interests in the subsequent shopping process and carry out accurate consumption record tracking. 2,Commodity selection and information acquisition After entering the store, customers can choose the goods freely. On the shelves, each merchandise area may be equipped with a small infrared touch screen display terminal. When a customer picks up an item, he or she can place it in a sensing area near the touch screen, and the screen will immediately light up and display details of the item, including price, origin, shelf life, use method and relevant promotional activities. This uses the touch sensor of the infrared touch screen overlay to connect with the built-in commodity database. When the commodity triggers the infrared sensor area, the corresponding commodity information is quickly called out and displayed to the customer. In addition, in some public areas of the store, there is also a large infrared touch screen query device, customers can search the location information of all the goods in the store, convenient to quickly find the desired goods, this

1,Self-service terminal Self-service terminals are widely used in banks, airports, shopping malls and other places. Banks use IR touch screen frames for self-service cash machines (ATMs) and self-service inquiry terminals. The touch screen can accurately identify the user's touch operation, and facilitate users to conduct financial business operations such as account inquiry, transfer and withdrawal. At the airport, self-check-in devices use infrared touch screen overlays to allow passengers to check in independently, such as selecting seats and printing boarding passes. The self-guided terminal in the mall uses infrared touch screen overlay, which can provide consumers with services such as store location query and commodity information browsing.   2,Industrial control equipment In the industrial field, some control devices use infrared touch screens. For example, the operation panel of the industrial automation production line allows workers to monitor and operate the production equipment through the infrared touch screen. By touching the virtual button on the screen, the functions of starting, stopping and parameter adjustment of the machine are realized. This way of operation is more flexible than traditional mechanical buttons, and the control instructions can be modified on the touch screen at any time according to the production needs. At the same time, the infrared touch screen has good durability and can adapt to the complex situation such as dust and oil in the industrial environment.   3,Intelligent Educational equipment

Working principle differenceTouch sensor: The capacitive type senses touch by changing the capacitance between the human body and the electrode, and the resistive type changes the resistance by pressing. The internal infrared touch PCBA amplifies and filters the signal, and converts the signal into a digital signal to identify the touch. Infrared sensor: Active infrared emission, according to the object occlusion or reflection of the infrared part of the receiver (receiver tube on the PCB) signal changes; The infrared ray of the object is detected passively and processed by PCB to generate output signal. PCBA design and functional differencesTouch sensor PCBA: Focusing on touch signal processing, there are high-precision analog circuits, conversion chips and filter circuits, and there may be MCU to realize gesture recognition and other functions, and there is a communication interface design. Infrared sensor PCBA: The focus is on infrared signal processing. The active type has the transmit and receive circuit, the passive type pays attention to the signal strength and the time difference analysis, some has the temperature compensation circuit. Differences in Application Scenarios Touch sensor Application scenarios: It is mainly used in consumer electronics (such as mobi

Integrated Circuit (IC) and Printed Circuit Board Assembly (infrared PCBA) are two different concepts in the field of electronics. Definition and Composition. 1.Integrated circuit An integrated circuit is a tiny electronic device or component. It is the use of a certain process, the required transistors in a circuit, resistors, capacitors and inductors and other components and wiring interconnect together, fabricated in a small piece or several small pieces of semiconductor wafers or medium substrate, and then packaged in a shell, become a miniature structure with the required circuit function.For example, the central processing unit (CPU) of a computer is a highly complex integrated circuit that integrates hundreds of millions of transistors on a small chip and is capable of performing complex arithmetic and logic operations.

PCAP (Projected capacitive touch screen) and IR touch mainly have the following differences. In principle, the PCAP touch screen works by using the current sensing of the human body. It has a transparent conductive material coating on the screen surface. When the finger touches the screen, due to the existence of the electric field of the human body, a coupling capacitance will be formed between the finger and the conductive layer on the screen surface.It is as if in a calm electric "lake", the touch of the finger is like a small stone, causing a change in the "lake" (capacitance), so as to be perceived. The IR touch screen frame works by placing infrared emitting tubes and infrared receiving tubes around the screen frame. When there is an object (such as a finger) blocking the infrared ray, the position of the blocked infrared ray is calculated to determine the touch point. This is like a "big net" woven by the infrared ray, and the touch of the finger is like a "small insect" that breaks in and destroys the complete path of the infrared ray, and then the touch position is found. In terms of performance, the touch accuracy of the PCAP touch screen is relatively high. Because capacitive sensing can very sensitively capture small capacitance changes, it is like a keen "haptic master", which can accurately locate the touch point, and is suitable for occasions with high touch accuracy requirements, such as fine drawing software. While the accuracy of infrared touch screen overlay can also meet the general needs, but in this respect slightly inferior.But the infrared touch screen has a big advantage is its adaptability. It can not be limited by the material and conductivity of the screen surface. Whether it is glass or some special plastic materials, it can work normally as long as it does not affect the transmission of infrared rays.This is like an inclusive "warrior" who is less demanding on the "Jianghu environment" (screen surface

1,Definitions and Differences: PCB:A printed circuit board is a board with no electronic components. It is mainly composed of substrate, copper foil circuit and pad. The circuit is formed on the substrate through chemical etching and other processes, like a blank stage, only the basic frame and connection channels are set up, providing a place for the subsequent electronic components to "perform". Infrared PCBA:Printed circuit board assembly is the finished product after installing various electronic components (such as chips, capacitors, resistors, etc.) on the basis of PCB, and after a series of processes such as welding and debugging. It is equivalent to arranging actors (electronic components) on the stage, and rehearsing (debugging), and can directly "perform" (realize the function of electronic products).     2，Manufacturing process differences PCB：The first is design, where engineers use specialized software to plan the direction of lines and the placement of components. Then is the production process, including the production of the inner circuit, such as the use of lithography, etching technology to make the inner circuit on the copper clad plate; Then the lamination (for multi-layer board), the inner circuit and insulation layer laminated; After that, the outer circuit production and surface treatment, such as tin plating, gold plating to e

Infrared PCBA stands for Printed Circuit Board Assembly.The PCB method mainly refers to the installation of electronic components on a printed circuit board (PCB) through a series of technological processes, so that the circuit board realizes specific functions.Its specific process includes the following main steps: 1,SMT Solder paste printing is the first step of PCBA. The solder paste is accurately coated on the PCB pad with screen printing. Solder paste is used as a medium to connect the pins and pads of electronic components in the subsequent welding, and its printing accuracy affects the welding quality of mobile phone circuit board components. Component mounting and reflow soldering: The surface mount components are accurately placed on the PCB pad, which can process a variety of components at high speed and high precision. The chip capacitance and resistance of the computer motherboard are installed from this. After the mounted circuit board is reflow soldered, the solder paste melts and solidifies, so that the pins of components and pads are soldered firmly. Temperature control is required to ensure quality and prevent virtual soldering and short circuit. 2,DIP Plug-in: For components that cannot be installed by surface mount technology (such as large electrolytic capacitors, transformers, etc.), insert the pins into the corresponding holes of the PCB board by hand or by a plug-in machine. Wave soldering: The PCB board inserted into the component passes through the wave soldering equipment, and the pin contacts with the wave peak formed by the melting solder in the equipment to complete the welding. 3. Detection and debugging phase Appearance inspection: manually or using Automatic Optical Inspection (AOI) equipment, check whether the installation position of the components on the circuit board is correct, whether the welding is good, and whet

Infrared PCBA is Printed circuit board components, which is key concept in the modern electronics industry.In the manufacturing process,the first is PCB design and production.PCB is the basis of the bearing circuit, and its circuit layout is carefully planned according to the circuit principle, taking into account signal transmission, power distribution and other factors. The next is procurement of components.According to the design requirements, select appropriate specifications, types of chips, resistors, capacitors, inductors and other electronic components, the quality of these components directly affect the performance of PCB. In the assembly process,for SMT,the tiny components are accurately mounted to the specified position of the PCB through high-precision mounter, which has fast mounting speed and high accuracy, and can meet the needs of large-scale production. And then is the soldering process, which uses techniques such as reflow soldering (for SMT components) and wave soldering (for plug-in components) to form a firm electrical connection between the components and the PCB.From a functional point of view, PCB is a core part of electronic products. In consumer electronic products, such as the

The working process of IR touch screen frame mainly includes the following steps: 1,Construct the infrared matrix: The circuit board in the outer frame installed in front of the display is arranged on the four sides of the screen with one-to-one corresponding infrared emitting tubes and receiving tubes, forming an infrared matrix that covers the surface of the screen like a fine "optical network". 2,Normal condition monitoring: System will continuously scan the infrared matrix.Under the normal condition of nothing touching screen, the infrared ray emitted by the infrared emitting tube can be received by the corresponding receiving tube.And the system is in the stable condition. 3,Touch detection: When user use finger or other objects infrar

Infrared touch is a kind of advance touch technology,which has widely application in the field of modern electronic equipment interaction.IR touch screen is code of whole touch system,its key part is the infrared touch frame.The infrared touch box is composed of numerous infrared emitting tubes and infrared receiving tubes arranged in order, and these emitting tubes and receiving tubes are distributed around the frame of the infrared touch screen.When infrared touch screen overlay working,the infrared emitting tube will continue to emit infrared rays, forming a criss-cross infrared matrix in front of the screen, which constructs an invisible sensor network, which is the sensor basis of the infrared touch screen.When user use finger or touch pen touch infrared touch screen,corresponding position infrared rays will be blocked.Infrared receiving tube can quickly sense change of this way in the infrared touch screen.After that the information obtained by the receiver tube by special algorithm is progressed to accurately calculate the coordinates of the touch point on the infrared touch screen to recognize the type of touch action.Such as simple click operation,quickly double click operation and complex gesture operations such as swiping and zooming.This infrared touch technology bring user a convenient, efficient and intuitive operation experience by cooperate working of IR touch frame and infrared touch screen. It has many application in many fields.Such as self-service query terminal, intelligent education equipment and industrial control display equipment.

Are you still anxious about how to choose a good whiteboard? So let me tell you how to choose a good digital whiteboard to start with: 1,Hardware. Effect of display:If you want to chose good interactive whiteboard for classroom,resolution is important.It is best to be 1080P and above.And choose 4K if possible.The brightness of 300~500 lumen or more,the higher the contrast, the better.That can ensure the digital board for teaching has a good display effect in a variety of environments.It can allows the user to clearly see the content displayed above. Touch sensing technology:Interactive whiteboard touch induction technology needs high precision, accuracy of measured writing and drawing, high sensitivi

  The difference between an smart board for classroom and a dry erase board is as follows 1,Function: Smart board for teaching: It has strong interactivity.And it can be connected to computers, projectors.It through software operation courseware, such as video playback, annotation PPT

The reasons for the high price of whiteboards are as follows： First of all,digital whiteboard usually has complex integrated technology.It integrates touch-sensing technology, which can accurately sense the user's touch operation, whether with the finger or a special stylus, can smoothly write on the whiteboard, erase and other actions.The development and produce cost of this high-precision touch sensing system are expensive.This make digital board for teaching for classroom more expensive than regular whiteboard in basic cost. Secondly,interactive whiteboard has many functions.It can not only carry out writing display like traditional whiteboard,but also realize interactive meeting or meeting. For example: in the educational area,teacher can connect the teaching resource library through the interactive whiteboard,and retrieve various materials such as pictures and videos at any time to explain knowledge easily and vividly.In corporate meetings,users can use interactive whiteboard to perform real-time file sharing, annotation modification and other operations.In order to realize strong functions,interactive whiteboard are often equipped with high-performance processors and large-capacity storage devices, and also need to be equipped with complex software sys

Infrared technology can realize multi points touch,especially in IR touch screen frame.Infrared touch screen works by installing infrared transmitter and receiver tubes around the bezel of the screen.When the touch action occurs, the touching object (such as the finger) will block certain infrared rays, and the system determines the position of the touch point by analyzing the occlusion of these rays.For multi points touch, it mainly relies on complex algorithms and a sufficient number of infrared transmit and receive pairs to achieve.For example:in a well-designed infrared touch screen overlay device,when two fingers touch the screen at same time,two different sets of infrared rays will be occluded.System can quickly recognize the position corresponding to these two groups of occluded infrared rays to determine that it is two touch points and realize two-point touch.If you want to increase touch points,as long as the layout of the infrared emitter and receiver tube is reasonable enough, high enough density, and with efficient and accurate calculation algorithm,you can realize more points touch.For example:it can support ten or even more points of touch operation in some higher infrared touch electronic whiteboard or large touch devices.However, the performance of infrared touch screen overlay to realize multi-touch will also be limited by some factors.For example:The quality and accuracy of the infrared emitting and receiving tubes will affect the accuracy of the judgment of the touch point position.The unstable infrared of the transmitter tube or the low sensitivity of the receiver tube and the excessively strong infrared components in the ambient light may lead to the misjudgment of the touch point position of the infrared touch screen or the inability to identify multiple touch points, affecting

IR touch screen frame can take advantage of infrared technology to realize touch operation detection.Its use is widely. 1,Consumer electronic devices. Smart phone and tablet PC:It provides intuitive interaction and can be operated with gloves and non-conductive objects.That can facilitate various user behaviors and cold weather usage. Smart watches:It make it easy for user to view information on small screens and perform simple operation. Such as viewing motion data. 2,Business and Retail. Self-service terminal:Bank ATM, shopping mall inquiry machine and so on adapt infrared touch screen.It is eas

 Infrared sensor play an important role in IR touch screen frame. First of all,infrared sensor see infrared ray in system of infrared touch screen overlay.Infrared transmitters and infrared sensors are installed around the frame of the infrared touch screen overlay.The infrared light emitted by the infrared emitter forms a crisscut of infrared light grid in front of the screen.When object or finger touch IR touch frame,infrared sensor see a break in light.Because touch operation can block out part of the infrared,infrared sensor be acutely aware of this change in light. Secondly,infrared sensor can see location information of touch points.In the working process of the ir touch frame,by detecting the position of the occluded infrared in the grid.They use the corresponding algorithm to accurately calculate the coordinate position of the touch point on the infrared touch screen, so as to achieve accurate touch operation.

Infrared touch overlay is a kind of advance touch sensing device.It is installed on the surface of display equipment.It mainly consists of closely packed infrared transmitter and receiver tubes forming a matrix frame.When it working,the infrared transmitter tube continuously emits infrared light, and the receiver tube is responsible for receiving this light.When object touch screen,it will block part of the infrared light,so that the receiver tube cannot receive the light at the corresponding position.System can accurately determine the position of touch points to realize touch operation by detecting the position of the blocked light. IR touch frame has many remarkable advantages.Fist of all,it has high sensitivity.It can quickly accurately respond to touch actions to bring fluency touch experience for users.Secondly,it has good stability.It doesn’t affect too much by environmental factors such as temperature and humidity, and can work reliably in a variety of complex environments.In addition,infrared touch panel is also high durability.It can withstand long time use and frequent touch operation without damage.Because of these advantages,infrared touch frame is widely used in all kinds of fields.On educational area,electronic whiteboards are often equipped with infrared touch frames to facilitate interactive teachi

The difference between smart board and smart board for classroom are as follows: 1,Functional characteristics: Degree of intelligence. The intelligent whiteboard has a high level of intelligence, advanced sensors and software systems, which can realize high-precision touch sensing, gesture recognition, etc., without additional tools to operate.However, the smart board for teaching’ s function is traditional.And it can intelligent identification.Its responds is lower.It is mainly touch writing,drawing and simple multimedia playback.

The smart board for classroom is a kind of modern teaching and office tool.It has several uses: 1,Teaching. Lecture:Teachers can write,draw and display multimedia resources on the smart board for teaching to explain the knowledge points vividly. Interactive teaching:Student can answer questions on the smart board for teaching.Teachers can initiate interactive activities and adjust teaching strategies with the help of statistical functions. Resource sharing:Teachers can upload teaching materials to facilitate students to view and review, and can also obtain online resources to enrich teaching content.

Webcam is not usually better than best live webcam.4K PC camera isn’t also usually than webcam.Here's a comparison: 1,Picture quality. Webcam:Medium and high-end picture quality advantage, support high resolution, vivid and delicate picture; The low-end picture quality is mediocre but overall better than that of most PC cameras. Web cam 4k:The built-in camera has poor picture quality due to its low pixel design and cost.External medium and high-end camera has good picture quality to meet need of HD recording requirements. 2,Functional characteristics.

The main differences between best live webcams and digital cameras are as follows: Usage aspect: The 4k PC camera is manly used for video calls,live streaming,meeting and so on on the computer. The digital camera is mainly used for take photos and record videos.Ans it can also use alone. Performance features Image quality