German BROECKSKES SAB sensors, BROECKSKES SAB models, BROECKSKES SAB prices

BROECKSKES SAB pressure sensors for level measurement. Submersible hydrostatic level transmitters (level gauges) operate on the principle that the static pressure of the measured liquid is proportional to its height. They use advanced isolated diffused silicon sensing elements or ceramic capacitive pressure sensors from abroad to convert static pressure into electrical signals. After temperature compensation and linearization, these are converted into standard electrical signals (typically 4–20mA/15VDC).

BROECKSKES SAB 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 similar, characterized by compactness, robustness, and high power. Neodymium glass lasers achieve the highest pulsed output power, reaching tens of megawatts. (2) Gas lasers: The working medium is gas. Various gas atomic, ion, metal vapor, and molecular gas lasers are available. Common types include carbon dioxide lasers, helium-neon lasers, and carbon monoxide lasers. Shaped like ordinary discharge tubes, they feature stable output, good monochromaticity, and long service life, but have lower power and conversion efficiency. (3) Liquid lasers: These include chelate lasers, inorganic liquid lasers, and organic dye lasers, with organic dye lasers being the most important due to their continuously tunable wavelength. (4) Semiconductor lasers: A relatively newer type of laser, with gallium arsenide lasers being more mature. They feature high efficiency, small size, light weight, and simple structure, making them suitable for aircraft, warships, tanks, and portable infantry use. They can be made into rangefinders and sights. However, they have lower output power, poorer directionality, and are significantly affected by ambient temperature.

BROECKSKES SAB sensor principles

When a laser sensor operates, a laser diode emits laser pulses toward the target. The laser scatters in all directions after reflecting off the target. Part of the scattered light returns to the sensor receiver, where it is imaged onto an avalanche photodiode by the optical system. An avalanche photodiode is an optical sensor with internal amplification, enabling it to detect extremely weak light signals and convert them into corresponding electrical signals. Common laser distance sensors measure target distance by recording and processing the time elapsed from pulse emission to reception. Laser sensors must measure transmission time with extreme precision due to the high speed of light.

BROECKSKES SAB sensor applications

Oversize vehicle width and height detection: Laser sensors are used for rapid measurement. An PC industrial PC and the network kernel of visualization programming software VB enable real-time data transmission and processing with the sensors. User-friendly upper-computer control software was also designed. Field test data show that the system offers good real-time performance and high measurement accuracy, providing practical value. Highway toll stations: Used at highway toll stations for vehicle counting and safety protection. Malaysia's Teras company has deployed hundreds of BEA laser sensors in its manual and automatic toll collection systems. These laser sensors use the Time-of-Flight (TOF) measurement principle to form 4 planes within the detection zone for vehicle monitoring. The product also features anti-rear-end collision and vehicle safety protection functions. Compared to traditional light curtains, laser sensors offer higher sensitivity, higher accuracy, easier installation, better cost-performance ratio, and stronger stability. Google's second-generation driverless car: Equipped with laser sensors, Google's second-generation autonomous vehicle prototype retains a prominent roof-mounted laser sensor, while other sensors are discreetly integrated. The front, rear, and sides of the vehicle display clear Google driverless car markings. The control and driving principle involves numerous sensors around the vehicle continuously collecting precise data about the vehicle itself and its surroundings. An onboard processor analyzes and computes this data to control vehicle movement. The driverless car uses GPS devices and sensors to accurately determine vehicle position and forward speed, identifying pedestrians, vehicles, bicycles, traffic lights, and many other objects nearby. A 360° rotating laser holographic sensor mounted on the roof of this Lexus vehicle can almost simultaneously sense conditions in front, to the sides, and behind the car. Data collected by the sensor is transmitted via green data cables to a processor located at the right rear of the vehicle. This laser sensor also enables global precise positioning for the driverless car. The original L emblem on the front of the Lexus was removed and replaced with a radar sensor to measure forward distance and vehicle speed, allowing assessment of traffic conditions ahead and controlling safe acceleration and deceleration. Position sensors on the tire hubs detect wheel rotation to assist with vehicle localization. The heart of the Google driverless car—the processor—is located at the right rear of the vehicle. Data from all sensors is transmitted here via data cables for software analysis and processing, enabling precise sensing and judgment of different objects near the driverless car. In addition to analyzing and judging the current positions of surrounding objects, the driverless car uses software to calculate and accurately predict the next possible position of each object. Finally, the driverless car makes safe driving decisions based on all collected data, including controlling vehicle speed and maintaining distances from surrounding vehicles.

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