German FILAME BRUSSELS sensors, FILAME BRUSSELS models, FILAME BRUSSELS prices

FILAME BRUSSELS sensors are sensors that use laser technology for measurement. They consist of a laser, a laser detector, and a measurement circuit. Laser sensors are a new type of measuring instrument. Their advantages include the ability to perform non-contact long-distance measurement, high speed, high precision, large measuring range, and strong resistance to optical and electrical interference.

FILAME BRUSSELS sensor classification

Lasers can be divided into 4 types based on the working medium. (1) Solid-state lasers: The working medium is solid. Common types 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: The working medium is gas. There are now various gas atomic, ion, metal vapor, and gas molecular lasers. Common types 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: These 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 feature of continuously tunable wavelength. (4) Semiconductor lasers: This is a relatively young type of laser, with gallium arsenide lasers being more mature. Characteristics include high efficiency, small size, light weight, and simple structure, making them suitable for carrying on aircraft, warships, tanks, and by infantry. They can be made into rangefinders and sights. However, they have lower output power, poorer directionality, and are significantly affected by ambient temperature.

FILAME BRUSSELS sensor principle

When a laser sensor operates, 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 is imaged onto an avalanche photodiode. An avalanche photodiode is an optical sensor with internal amplification functionality, 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 very fast.

FILAME BRUSSELS sensor applications

Over-limit detection of vehicle width and height: Laser sensors are used for rapid measurement. An PC industrial PC and the network kernel of visualization programming software VB are used for real-time data transmission and processing with the sensors. User-friendly upper computer control software has also been designed. Field test data show that the system has good real-time performance and high measurement accuracy, possessing 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 sensors adopt the Time of Flight (TOF) measurement principle, forming 4 planes within the detection area to detect vehicles. Meanwhile, the product also features functions such as anti-rear-end collision and vehicle safety protection. Compared with traditional light curtains, laser sensors offer advantages such as high sensitivity, high precision, 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 laser sensor on the top remaining 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 the Google driverless car involves numerous sensors installed around the car continuously collecting precise data about the vehicle itself and its surroundings. The onboard processor analyzes and calculates this data, then controls the vehicle'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, judging 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 conditions in front of, to the side of, and behind the car. Data collected by the sensor is input via green data cables into the processor located on the right rear side of the vehicle. 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 removed and replaced with a radar sensor, used to measure the distance ahead and vehicle speed to judge the condition of traffic ahead and control safe acceleration and deceleration. Position sensors are also mounted on the tire hubs to detect wheel rotation, helping the vehicle with positioning. The heart of the Google driverless car—the processor—is located on the right rear side of the vehicle. Data information from various sensors is transmitted here via data wires, where software analyzes and processes it for precise sensing and judgment of different objects near the driverless car. In addition to analyzing and judging the current positions of objects around the driverless car, the software must also calculate to accurately predict the possible next position of each object. Finally, the driverless car makes safe driving decisions based on all collected data, including controlling vehicle speed and distance from surrounding vehicles.

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