German Metrel sensors Metrel models Metrel prices

Metrel sensors are used to measure the robot's own position. Position sensors can be divided into two types: contact sensors and proximity sensors. Sensors that can sense the position of the measured object and convert it into a usable output signal. It is a sensor that can sense the position of the measured object and convert it into a usable output signal. Position sensors can be used to detect position, reflect switches in certain states. Unlike displacement sensors, position sensors come in two types: contact and proximity.

Metrel sensor classification

Lasers can be divided into 4 types according to the working medium. (1) Solid-state lasers: Their working medium is solid. Commonly used ones include ruby lasers, neodymium-doped yttrium aluminum garnet lasers (i.e., YAG lasers), and neodymium glass lasers. Their structures are roughly similar, characterized by being small, robust, and high-power. Neodymium glass lasers are devices with the highest pulsed output power, reaching tens of megawatts. (2) Gas lasers: Their working medium is gas. There are now various gas atomic, ion, metal vapor, and gas molecular lasers. Commonly used ones include carbon dioxide lasers, helium-neon lasers, and carbon monoxide lasers. Their shape is like ordinary discharge tubes, characterized by stable output, good monochromaticity, and long life, but lower power and lower conversion efficiency. (3) Liquid lasers: They can be further divided into chelate lasers, inorganic liquid lasers, and organic dye lasers. Among them, organic dye lasers are the most important, with the main characteristic of continuously tunable wavelength. (4) Semiconductor lasers: They are a relatively young type of laser, among which gallium arsenide lasers are more mature. Characteristics include high efficiency, small size, light weight, and simple structure, suitable for carrying on aircraft, warships, tanks, and by infantry. They can be made into rangefinders and sights. However, the output power is relatively small, directivity is poor, and they are greatly affected by ambient temperature.

Metrel sensor principle

When a laser sensor works, the laser emitting diode first emits laser pulses toward the target. After reflection from the target, the laser scatters in all directions. Part of the scattered light returns to the sensor receiver, is received by the optical system, and imaged onto an avalanche photodiode. An avalanche photodiode is an optical sensor with internal amplification function, so it can detect extremely weak light signals and convert them into corresponding electrical signals. Commonly seen are laser distance sensors, which determine the target distance by recording and processing the time elapsed from the emission of the light pulse to its return and reception. Laser sensors must measure the transmission time extremely precisely because the speed of light is too fast.

Metrel sensor applications

Over-limit detection of vehicle width and height: Laser sensors are used for rapid measurement. The network kernel of PC industrial PC and visual programming software VB is utilized for real-time data transmission and processing with the sensors. User-friendly upper computer control software is also designed. Field test data shows that the system has good real-time performance, high measurement accuracy, and certain practical value. Highway toll stations: Used at highway toll stations for vehicle counting and safety protection. Malaysia's Teras company has already applied hundreds of sets of BEA laser sensors in its manual and automatic toll station systems. The laser sensor adopts the Time of Flight (TOF) measurement principle, forming 4 planes in the detection area to detect vehicles. Meanwhile, the product also has functions such as anti-rear-end collision and vehicle safety protection. Compared with traditional light curtains, laser sensors have advantages such as high sensitivity, high accuracy, convenient installation, high cost-performance ratio, and strong stability. Google's second-generation driverless car: Equipped with laser sensors. In Google's second-generation autonomous vehicle prototype, besides the top-mounted laser sensor which remains quite obvious, other sensors are set up very discreetly. Obvious Google driverless car logos are posted on the front, rear, and both sides of the vehicle. The control and driving principle of Google's driverless car is to continuously collect various precise data of the vehicle itself and its surroundings through numerous sensors installed around the car, analyze and calculate through the processor inside the car, and then control the car's movement based on the calculation results. The driverless car uses GPS equipment and sensors to accurately locate the vehicle's position and forward speed, and judge surrounding pedestrians, vehicles, bicycles, traffic lights, and many other objects. On the roof of this Lexus is a 360° rotating laser holographic sensor, which can almost simultaneously sense the conditions in front, on the sides, and behind the car. The data collected by the sensor is input into the processor located on the right rear side of the vehicle through green data cables. This laser sensor also allows the driverless car to achieve global precise positioning. The original L type Lexus emblem on the front of the car was also removed, replaced by a radar sensor; used to measure the distance ahead and vehicle speed, in order to judge the traffic conditions ahead and control safe acceleration and deceleration of the vehicle. Position sensors are also installed on the tire hubs to detect wheel rotation and help with vehicle positioning. The heart of Google's driverless car—the processor—is located on the right rear side of the vehicle. Data information from various sensors is transmitted here through data wires, analyzed and processed through software, in order to precisely sense and judge different objects near the driverless car. In addition to analyzing and judging the current positions of objects around the driverless car, the driverless car also needs to calculate through software to accurately predict the possible next position of each object. Finally, the driverless car will make safe driving decisions based on all collected data, including controlling vehicle speed and distance from surrounding vehicles.

Weidou Intelligent Technology professionally sells German Metrel sensors, Metrel proximity sensors, Metrel distance sensors, Metrel vision sensors, Metrel displacement sensors, Metrel torque sensors, Metrel speed sensors, Metrel photoelectric sensors, Metrel position sensors, Metrel angle sensors, Metrel tactile sensors, Metrel temperature sensors, Metrel pressure sensors, Metrel flow sensors, Metrel level sensors, Metrel motion sensors, Metrel process sensors. Original imports from Germany. Welcome customers to inquire and order.