Differential photoelectric sensor

A sensor that uses two or more photodetectors and uses the difference in light input response as the output signal.

It can be used to detect the displacement of the beam point. When the beam hits the junction of the two detectors, since the displacement output changes in opposite phases, taking their difference can obtain a signal inversely proportional to the displacement.

Related News

Magnetic sensor
November 11, 2024Magnetic sensorThere are many kinds of magnetic sensors made by usingvarious physical phenomena. The magnetic needle is an early magnetic sensorused by the compass to detect the direction. In recent y...view
Ion fire sensor
February 10, 2025GaugePressure SensorA pressure sensor that detects gauge pressure. The surface tobe detected of the diaphragm or diaphragm box of the pressure-bearing elementis open to atmospheric pressure, and the d...view
Working principle of lightweight electric power-assisted bicycle - rear axle hook sensor
August 5, 2024Working principle of lightweight electricpower-assisted bicycle - rear axle hook sensorThe gray component in the figure is the "rear axle hook sensor",which is installed at the junction of the rear se...view
Missile-range-instrumentation Radar
July 12, 2024Missile-range-instrumentation RadarRange measurement radarUse tracking radar to measure the azimuth, elevation and distance of the missile, and calculate the missile's velocity vector based on the rat...view
Depth Sensor
September 14, 2024Depth SensorA sensor used to detect thedepth of seas and lakes. Ultrasonic waves are emitted from the ship to thebottom of the water , and the water depth is calculated by the time required toreceive ...view
Oil level sensor
October 19, 2024Oil level sensorA device that senses the oillevel and sends a signal. Installed in the fuel tank, it sends a signal basedon a specific oil level or continuous changes in the oil level , and transmitsi...view

Differential photoelectric sensor

Magnetic sensor

Ion fire sensor

Working principle of lightweight electric power-assisted bicycle - rear axle hook sensor

Missile-range-instrumentation Radar

Depth Sensor

Oil level sensor