Measuring Light Curtains and Vehicle Classification Light Curtains

A：The working principle of measuring light curtain is as follows: The optical protection device detects the misalignment position, and if there is any deviation, it sends out a signal. The optical misalignment software system then performs editing and calculation operations on the signal and sends out control signals. The external actuator is driven by the control system to make corrections in the movement of the material, thus controlling the material to move in a straight line.Dadisick's QL series measuring light curtain is suitable for use on various roll-to-roll equipment, such as paper rolls, films, fabrics, non-woven fabrics, and metal foils. It can perform both single-side and double-side misalignment correction. It features a simple wiring installation method and diverse output functions.The main features of the Dadisick's QL series measuring light curtain are as follows:1. It can be widely used in industries such as printing and packaging, papermaking, film, and that require control of edge alignment.2. The QL series measuring light curtain has a sturdy structure and can perform single-side, double-side, and center alignment correction. The wiring and installation methods are diverse, making it easy to operate.3. It can detect over long distances and is easy to align, with a maximum detection accuracy of 1.25mm.4. It offers multiple scanning modes, including parallel scanning and cross scanning.5. It has RS485 or RS232 communication capabilities, allowing communication with a host computer using the standard MODBUS protocol.6. The detection distance can reach up to 20,000mm, with a typical protection height ranging from 30-2000mm. The light beam spacing options include 1.25mm, 2.5mm, 5mm, and 10mm, making it suitable for high-precision detection and measurement.📘 Need more detailed information?Welcome to download our technical information, or contact technical support directly for help:Download product brochure (PDF)  Contact us now 

A：With the rapid development of industry, the operation and control technology of machines are becoming more advanced, and automated equipment has become an essential tool in modern factories. However, if safety precautions are not properly implemented, there could be potential safety hazards in hazardous work areas such as punching machines, hydraulic presses, oil presses, intelligent warehousing, and industrial robots. The application of infrared light grid sensors in the field of safety protection is known as safety light curtains/safety light screens/optical protective devices, etc.As the precision requirements for workpieces increase and labor costs become more expensive, along with the widespread use of automated equipment, many industries choose to use automated or semi-automated solutions to overcome tedious and repetitive manual measurements. These solutions are commonly used for measuring the shape, size, volume contour of objects, hole detection, classification detection, positioning detection, edge detection, height limitation detection, vehicle separation, and other aspects.DADISICK's measurement light curtains are derived from safety light curtains and have higher accuracy and technical requirements. Their principle is based on detecting changes in the shape of objects passing through the infrared light curtain by sensing whether the infrared light is obstructed and the number of obstructing blocks.Safety light curtains are commonly used for safety protection and detection positioning. Typically, safety light curtains are used as switch signals, with normally closed mode used for personal safety protection and normally open mode used for detecting the position of workpiece productsDADISICK's QL measurement light curtains usually communicate with safety light curtains using RS485/RS232/analog current/analog voltage. Of course, we also support network port output. The purpose is to transmit the signals detected by the measurement light curtains through communication to the PLC or controller to obtain the required data.

A：The separation of vehicles at the toll station is achieved through vehicle separation light barriers.Vehicle separation light barriers, also known as infrared vehicle detectors, are detectors that use linearly arranged infrared light emitters and receivers to achieve synchronous scanning of vehicles. They convert the light signals into electrical signals to comprehensively detect vehicle data. Compared to other detection technologies, vehicle separation light barriers have mature technology, easy installation, high-speed response, strong anti-interference capability, and can output rich vehicle data information. They can reliably detect various types of vehicles.The DADI Vehicle Separation Light Barrier Series is a key device in intelligent transportation systems, highway toll systems, non-stop toll systems, highway weigh-in-motion systems, overlimit detection systems, and other traffic control systems.Features of the ESCC series vehicle separation light barrier products:1. Long detection distance and easy alignment.2. Used for high-precision detection and measurement.3. Equipped with RS485 or RS232 communication function, using standard MODBUS protocol for communication with the host computer.4. Analog output 0-5V/0-10V/4-20mA.5. Waterproof and temperature-adjustable housing.6. Resistant to low and high temperatures.

A:Measurement light curtains and safety light curtains are both made up of emitters that emit infrared light, which is then received by receivers to create a light curtain. Therefore, they are essentially the same in function, with the only difference being in terminology. Other terms used include detection gratings and detection light curtains.Measurement light curtains or measurement gratings are types of photoelectric sensors used for detection and measurement in industries such as industrial, mechanical, and production line fields. They are based on the same principle as safety light curtains, which are a type of through-beam photoelectric sensor. These technologies have emerged as new high-tech industries.Many people may wonder, what are the differences between a measurement light curtain and a safety light curtain?A safety light curtain is a safety protection product that, upon detecting a signal, outputs a signal to the controller, causing the operating machine to stop.A measurement light curtain is an extension of the safety light curtain. Its main purpose is to detect and measure products. It uses data obtained through infrared obstruction to output analog/RS485 signals to the machine. By using algorithms, it can determine the dimensional data of the object being measured.With the advent of intelligent technology, installing measurement light curtains on equipment can greatly reduce labor costs. Measurement light curtains are a type of photoelectric sensor, similar to ordinary through-beam photoelectric protectors. They consist of separate emitters and receivers in relative positions. They can be used for measuring object size and detecting and measuring the external contour dimensions of objects.A measurement light curtain is a non-contact detection method where an emitter emits a beam of light that is received, forming a light curtain. Through scanning, in conjunction with a controller and software, it achieves functions and applications such as detection and measurement.Measurement light curtains utilize beam emission to achieve size detection and have become a reliable non-contact measurement technology. These reliable measurement light curtains can provide better control and detection capabilities. Nowadays, the design of high-quality measurement light curtains highlights the advantages of modern detection technology, and each measurement light curtain design has its own characteristics. Measurement light curtains from Dadi Schenk can be widely used in industries such as industrial, mechanical, and production lines, mainly for detection and measurement purposes. Currently, in the field of measurement light curtains, Dadi Schenk, for example, offers high precision with an accuracy of up to 1.25mm, stable performance, and strong anti-interference ability.