PILZ switch German PILZ model PILZ price

PILZ switch is a measurement feedback device that operates based on the optical principle of gratings. Grating scales are frequently used in the closed-loop servo systems of CNC machine tools and can be used to detect linear or angular displacement. The measurement output signal is a digital pulse, characterized by a large detection range, high detection accuracy, and fast response speed. For example, in CNC machine tools, they are often used to detect the coordinates of the tool and workpiece to observe and track feed errors, thereby compensating for the motion error of the tool. According to different manufacturing methods and optical principles, grating scales are divided into transmission gratings and reflection gratings.

PILZ switch classification

Lasers can be divided into 4 types according to 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 compact and robust with 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 which organic dye lasers are the most important. Their greatest characteristic is that the wavelength is continuously tunable. (4) Semiconductor lasers: This is a relatively young type of laser, with gallium arsenide lasers being the more mature variant. Characteristics include high efficiency, small size, light weight, and simple structure, making them suitable for use on aircraft, warships, tanks, and for carrying 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.

PILZ switch principle

When a laser switch operates, the laser emitting diode first emits laser pulses toward the target. After reflecting off the target, the laser scatters in all directions. Part of the scattered light returns to the switch receiver, where it is received by the optical system and imaged onto an avalanche photodiode. An avalanche photodiode is an optical switch with internal amplification capability, so it can detect extremely weak light signals and convert them into corresponding electrical signals. A common type is the laser distance measuring switch, which determines the target distance by recording and processing the time elapsed from the emission of the light pulse to its reception. Laser switches must measure the transmission time with extreme precision because the speed of light is very fast.

PILZ switch applications

Over-limit detection of vehicle width and height: Laser switches are used for rapid measurement. The network kernel of the PC industrial PC and visualization programming software VB is utilized for real-time data transmission and processing with the switch. Additionally, user-friendly upper computer control software has been designed. Field test data shows 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 switches in its manual and automatic toll station systems. The laser switch adopts 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 switches 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 switches. In Google's second-generation autonomous vehicle prototype, besides the laser switch on the top which remains quite obvious, other switches are set very discreetly. Obvious Google driverless car logos are affixed to the front, rear, and both sides of the vehicle. The control and driving principle of the Google driverless car involves numerous switches installed around the car, which continuously collect precise data about the vehicle itself and its surroundings. This data is analyzed and calculated by the processor inside the car, and the vehicle's movement is controlled based on the calculation results. The driverless car uses GPS equipment and switches to accurately locate the vehicle's position and forward speed, and to identify surrounding pedestrians, vehicles, bicycles, traffic lights, and many other objects. On the roof of this Lexus is a 360° rotating laser holographic switch, which can almost simultaneously sense the conditions in front of, to the side of, and behind the car. Data collected by the switch is input via green data cables to the processor located on the right rear side of the vehicle. This laser switch also allows the driverless car to achieve global precise positioning. The original L-shaped Lexus emblem on the front of the car was removed and replaced with a radar switch, used to measure the distance ahead and vehicle speed to determine the condition of the traffic ahead and control safe acceleration and deceleration. Position switches 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 switches is transmitted here via data wires for analysis and processing by software, enabling 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 vehicle needs to use software 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 maintaining distance from surrounding vehicles.

Weidou Intelligent Technology specializes in selling German PILZ switches, PILZ proximity switches, PILZ distance switches, PILZ vision switches, PILZ displacement switches, PILZ weighing switches, PILZ speed switches, PILZ photoelectric switches, PILZ position switches, PILZ angle switches, PILZ tactile switches, PILZ temperature switches, PILZ pressure switches, PILZ flow switches, PILZ level switches, PILZ motion switches, PILZ process switches. Original imports from Germany. Welcome customers to inquire and order.