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GRUNEWALD sensor pressure sensor for level measurement. The static pressure submersible level transmitter (level gauge) is based on the principle that the static pressure of the measured liquid is proportional to the height of the liquid. It uses advanced foreign isolated diffused silicon sensitive elements or ceramic capacitive pressure sensitive sensors to convert static pressure into electrical signals, which are then converted into standard electrical signals (generally 4～20mA/15VDC) after temperature compensation and linear correction.

GRUNEWALD sensor classification

Lasers can be divided into 4 types according to the working medium. (1) Solid-state laser: its working medium is solid. Commonly used are 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 laser: its working medium is gas. There are now various gas atomic, ion, metal vapor, and gas molecule lasers. Commonly used are 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 laser: it can be further divided into chelate lasers, inorganic liquid lasers, and organic dye lasers, among which organic dye lasers are the most important. Its biggest feature is that the wavelength is continuously tunable. (4) Semiconductor laser: it is a relatively young type of laser, among which gallium arsenide lasers are more mature. It is characterized by high efficiency, small size, light weight, and simple structure, suitable for carrying on aircraft, warships, tanks, and by infantry. It can be made into rangefinders and sights. However, the output power is small, the directivity is poor, and it is greatly affected by the ambient temperature.

GRUNEWALD sensor principle

When the 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 is imaged onto the avalanche photodiode. The avalanche photodiode is an optical sensor with an internal amplification function, so it can detect extremely weak light signals and convert them into corresponding electrical signals. The common type is the laser distance sensor, which determines the target distance by recording and processing the time elapsed from the emission of the light pulse to its return and reception. The laser sensor must measure the transmission time extremely accurately because the speed of light is too fast.

GRUNEWALD sensor application

Over-limit detection of vehicle width and height: Laser sensors are used for rapid measurement. The network kernel of PC industrial PC and visualization programming software VB is used for real-time data transmission and processing with the sensors. User-friendly upper computer control software is also designed. Field test data show 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 to 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. At the same time, 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 unmanned vehicle: Equipped with laser sensors, the prototype of Google's second-generation driverless car still has a quite obvious laser sensor on the top, while other sensors are set 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 is to continuously collect various precise data of the vehicle itself and its surroundings through many sensors installed around the car, analyze and calculate through the processor inside the car, and then control the car's driving based on the calculation results. The unmanned vehicle 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. There is a 360° rotating laser holographic sensor on the roof of this Lexus, 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 can also allow the unmanned vehicle to achieve global precise positioning. The original L type Lexus emblem on the front of the car was also removed and replaced with a radar sensor; it is used to measure the distance ahead and vehicle speed to determine 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 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 through data wires, analyzed and processed by software for precise sensing and judgment of different objects near the unmanned vehicle. In addition to analyzing and judging the current positions of objects around the unmanned vehicle, the unmanned vehicle also needs to calculate through software to accurately predict the possible next position of each object. Finally, the unmanned vehicle 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 GRUNEWALD sensors, GRUNEWALD proximity sensors, GRUNEWALD distance sensors, GRUNEWALD vision sensors, GRUNEWALD displacement sensors, GRUNEWALD weighing sensors, GRUNEWALD speed sensors, GRUNEWALD photoelectric sensors, GRUNEWALD position sensors, GRUNEWALD angle sensors, GRUNEWALD tactile sensors, GRUNEWALD temperature sensors, GRUNEWALD pressure sensors, GRUNEWALD flow sensors, GRUNEWALD level sensors, GRUNEWALD motion sensors, GRUNEWALD process sensors. Original imports from Germany. Welcome customers to inquire and order.