German Erhardt-Leimer sensors Erhardt-Leimer models Erhardt-Leimer prices

Erhardt-Leimer sensors are sensors that use laser technology for measurement. They consist of a laser emitter, a laser detector, and a measurement circuit. Laser sensors are a new type of measuring instrument; their advantages include the ability to perform non-contact long-distance measurement, high speed, high precision, large measuring range, and strong resistance to optical and electrical interference.

Erhardt-Leimer sensor applications

The most widespread application of distance sensors is in mobile phones. Smartphones on the market all contain distance sensors. When a user answers a call, the phone is close to the ear, making accidental operations likely (for example, cheeks puffing out during laughter may easily hang up the call). Therefore, distance sensors are needed to monitor the distance in real time. When the distance is too close, the screen automatically turns off to prevent accidental operations. In addition, distance sensors are widely used for measuring mine shaft depth, detecting aircraft altitude, and exploring outdoor environments. With continuous technological development, they also show prominent performance in wearable devices (such as smart belts).

Erhardt-Leimer sensor working principle

When time-of-flight laser sensors operate. Time-of-flight laser sensors must measure the transmission time extremely precisely because the speed of light is too fast. For example, the speed of light is approximately 3´108m/s. To achieve a resolution of 1mm, the electronic circuit of the transmission time distance-measuring sensor must be able to resolve the following extremely short time: 0.001m¸(3´108m/s)=3ps. Resolving a time of 3ps places excessive demands on electronic technology and is too costly to implement. However, today's inexpensive time-of-flight laser sensors cleverly avoid this obstacle by using a simple statistical principle, namely the law of averages, to achieve a resolution of 1mm while ensuring response speed.

Erhardt-Leimer sensor industry applications

1) Application in taxi meter testing systems: To further promote energy conservation and emission reduction and address the metrology needs of the electric vehicle industry, the mobile electric taxi meter testing system has been officially launched. The testing device is roughly divided into two parts: one is a host unit about the size of a password case, placed on the rear seat of the car, and the other is a distance sensor attached to the car body. According to reports, the device uses the driving distance measurement method. As the driver drives the car for a certain distance, the testing device and the meter sample synchronously. The entire testing process is expected to be completed in seven to eight minutes. 2) Extensive uses in the automation field: Today, in addition to ultrasonic sensors and standard photoelectric sensors, a new method capable of solving long-distance measurement and inspection tasks has been added—time-of-flight laser distance sensors. They provide application flexibility for various scenarios, including the following: (1) Equipment positioning. (2) Measuring the level of material bags. (3) Measuring object distance and object height on conveyor belts. (4) Measuring log diameter. (5) Protecting overhead cranes from collisions. (6) Error-free inspection scenarios. (7) Aircraft ground clearance monitoring.

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