German EUROBALT ENGINEERING sensors, EUROBALT ENGINEERING models, EUROBALT ENGINEERING prices

EUROBALT ENGINEERING pressure sensors for liquid 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 imported isolated diffused silicon sensitive elements or ceramic capacitive pressure sensors to convert static pressure into electrical signals. After temperature compensation and linear correction, these are converted into standard electrical signals (typically 4 to 20mA/15VDC).

EUROBALT ENGINEERING 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 gas molecular 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 use 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.

EUROBALT ENGINEERING sensor principles

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

EUROBALT ENGINEERING 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 has also been 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 installed around the vehicle continuously collecting precise data about the vehicle itself and its surroundings. An onboard processor analyzes and computes this data to control the vehicle's movement. The driverless car uses GPS devices and sensors to accurately determine its position and forward speed, identifying pedestrians, vehicles, bicycles, traffic lights, and many other objects nearby. The Lexus vehicle features a 360° rotating laser holographic sensor on its roof, capable of simultaneously sensing conditions in front, to the sides, and behind the vehicle. 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 has been removed and replaced with a radar sensor to measure forward distance and vehicle speed, assessing traffic conditions ahead to control 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 software calculates and accurately predicts the potential next positions of each object. Finally, the driverless car makes safe driving decisions based on all collected data, including controlling speed and maintaining distances from surrounding vehicles.

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