German STONERIDGE sensor STONERIDGE model STONERIDGE price

STONERIDGE sensor, also known as a displacement sensor, is a type of sensor used to detect the distance to an object to perform a preset function, and has been widely applied. Main products include mobile phone proximity sensors and long-distance measurement sensors, applied in smart belts. Proximity sensors can be divided into optical proximity sensors, infrared proximity sensors, ultrasonic proximity sensors, etc., based on their working principles. Most proximity sensors used in mobile phones are infrared proximity sensors, which have an infrared emitting tube and an infrared receiving tube. When the infrared light emitted by the emitting tube is received by the receiving tube, it indicates that the distance is close, and the screen needs to be turned off to avoid accidental operation. When the receiving tube does not receive the infrared light emitted by the emitting tube, it indicates that the distance is far, and there is no need to turn off the screen. The working principles of other types of proximity sensors are similar; they also determine the distance by emitting and receiving some kind of substance, such as ultrasonic waves or light pulses.

STONERIDGE sensor applications

The most widespread application of proximity sensors is in mobile phones. Smartphones on the market all contain proximity sensors. When a user answers a call, the phone is close to the ear, making accidental operations likely (such as cheeks puffing out while laughing easily hanging up the call). Therefore, the proximity 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, proximity sensors are widely used for measuring mine shaft depth, detecting aircraft altitude, exploring outdoor environments, and show prominent performance in wearable devices (such as smart belts) with the continuous development of technology.

STONERIDGE 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 transmission time 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, resulting in high implementation costs. However, today's affordable time-of-flight laser sensors cleverly avoid this obstacle by utilizing a simple statistical principle, namely the law of averages, to achieve a resolution of 1mm while ensuring response speed.

STONERIDGE sensor industry applications

1) Applied in taxi meter testing systems: To further save energy and reduce emissions, 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: a main unit about the size of a password case placed on the back 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 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) Wide range of applications in the automation field: Currently, 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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