German GEA Grasso sensors, GEA Grasso models, GEA Grasso prices

GEA Grasso sensors are devices that convert magnetic signals into electrical signals. By utilizing the transformation relationship between magnetic quantities and other physical quantities, with the magnetic field as the medium, they can also convert signals of other non-electrical physical quantities into electrical signals. There are two driving methods: one is driven by a permanent magnet, and the other is driven by an electromagnetic coil. The former is mostly used for detection; for example, if a moving part is made of a magnet, it will attract and emit a signal once it approaches the magnetic induction sensor. The latter is mostly used for control; if the electromagnetic coil is energized, the contacts will attract. Using magnetic induction sensors to replace limit switches that rely on collision contact can improve system reliability and service life; therefore, they are often used in programmable logic controllers (PLCs) as signaling devices for position arrival.

GEA Grasso 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, which can easily lead to accidental operations (such as cheeks puffing out during laughter accidentally hanging up the call). Therefore, distance sensors are needed to monitor the distance in real time. When the distance is too close, the screen is automatically turned off to avoid accidental operations. In addition, distance sensors are widely used in measuring mine depth, detecting aircraft altitude, and exploring outdoor environments. With the continuous development of technology, they also show prominent performance in wearable devices (such as smart belts).

GEA Grasso sensor working principle

When a time-of-flight laser sensor is in operation. Time-of-flight laser sensors must measure the transmission time extremely accurately 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 time-of-flight ranging sensor must be able to distinguish the following extremely short time: 0.001m¸(3´108m/s)=3ps. Distinguishing a time of 3ps places excessively high demands on electronic technology, making implementation too costly. However, today's affordable time-of-flight laser sensors cleverly bypass this obstacle by using a simple statistical principle, namely the law of averages, to achieve a resolution of 1mm while ensuring response speed.

GEA Grasso sensor industry applications

1) Application in taxi meter testing systems: To further promote energy conservation and emission reduction and address the metrological 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 back 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 about seven to eight minutes. 2) Wide range of applications in the automation field: Nowadays, in addition to ultrasonic sensors and standard photoelectric sensors, a new method capable of solving long-distance measurement and inspection has been added to automatic detection and control methods—the time-of-flight laser distance sensor. It provides application flexibility for various occasions, including the following: (1) Equipment positioning. (2) Measuring the material level of bulk bags. (3) Measuring the distance and height of objects on conveyor belts. (4) Measuring log diameter. (5) Protecting overhead cranes from collisions. (6) Error-free inspection occasions. (7) Aircraft ground clearance monitoring.

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