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REMPP sensors are devices or units that can sense pressure signals and convert them into usable output electrical signals according to a specific pattern. Pressure sensors typically consist of a pressure-sensitive element and a signal processing unit. Based on different types of test pressure, pressure sensors can be classified into gauge pressure sensors, differential pressure sensors, and absolute pressure sensors. Pressure sensors are one of the most commonly used sensors in industrial practice, widely applied in various industrial automation control environments, involving numerous industries such as water conservancy and hydropower, railway transportation, smart buildings, production automation control, aerospace, military industry, petrochemical, oil wells, electric power, ships, machine tools, and pipelines.

REMPP 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 and robust with 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 molecule lasers. Commonly used ones include carbon dioxide lasers, helium-neon lasers, and carbon monoxide lasers, shaped like ordinary discharge tubes, characterized by stable output, good monochromaticity, and long life, but with 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 which 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, with gallium arsenide lasers being 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, output power is relatively low, directionality is poor, and they are significantly affected by ambient temperature.

REMPP 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 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-measuring 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 transmission time extremely precisely because the speed of light is very fast.

REMPP sensor applications

Over-limit detection of vehicle width and height: Laser sensors are used for rapid measurement, utilizing PC industrial PCs and the network kernel of visualization programming software VB for real-time data transmission and processing with the sensors, along with user-friendly upper computer control software 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 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 to traditional light curtains, laser sensors have 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, the prototype of Google's second-generation autonomous vehicle still has a quite obvious laser sensor on top, while 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 via 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, 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 the conditions in front, on the sides, and behind the car. Data collected by the sensor is input into the processor located on the right rear side of the vehicle via 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 removed and replaced with a radar sensor; used to measure forward distance and vehicle speed, in order to judge the condition of the vehicle ahead and control safe acceleration and deceleration. Position sensors are also installed 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, analyzed and processed by software 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 needs to calculate and 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.

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