German Matsushita sensors Matsushita models Matsushita prices

Matsushita sensors are a general term for sensors designed to detect objects without physical contact, replacing contact-based detection methods such as limit switches. They convert information about the movement and presence of an object into electrical signals. Detection methods that convert to electrical signals include those utilizing eddy currents generated in the metal body of the detection object due to electromagnetic induction, those detecting changes in capacitance of the electrical signal caused by the approach of the detected object, and those using reed and guide switches.

Matsushita 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 while laughing can easily hang up the call). Therefore, the distance sensor monitors the distance in real time and automatically turns off the screen when the distance is too close 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).

Matsushita sensor working principle

When a time-of-flight laser sensor operates, it must measure the transmission time extremely precisely because the speed of light is very 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 excessive demands on electronic technology and is too costly to implement. However, today's affordable time-of-flight laser sensors cleverly avoid this obstacle by using a simple statistical principle, namely the averaging law, to achieve a resolution of 1mm while ensuring response speed.

Matsushita sensor industry applications

1) Application in taxi meter testing systems: To further promote energy saving and emission reduction and address the metering 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: a main unit similar in size to a password case, placed on the rear seat of the car, and 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: Today, in addition to ultrasonic sensors and standard photoelectric sensors, automatic detection and control methods have added a new method capable of solving long-distance measurement and inspection tasks—the time-of-flight laser distance sensor. It provides application flexibility for various occasions, including the following: (1) Equipment positioning. (2) Measuring the level of material in 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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