Wireless Photo Shutter Sensor

I. Working Principle
The photo shutter sensor is also called a photoelectric switch. It consists of an infrared transmitter and an infrared receiver. The transmitter emits external pulses at a certain
frequency. When the receiver receives this signal, it outputs a high level. When an external object (such as a light shield) blocks the infrared pulse through the photoelectric gate and the receiving end cannot receive the signal, a low level is output, and the logger calculates the time it takes for the external object to pass through the photoelectric gate, and count them accordingly.

II. Specifications

Type of measured data: time.

Accuracy: 1 microsecond.

Wavelength: 940nm.

Receiver sensitivity (RX): 90 dBm.

Calibration: Factory calibrated, no calibration required by the user.

III. Typical Applications
The photogate sensor is a sensor widely used in various physical experiments. It is suitable for conservation of momentum and mechanical energy; measuring speed, acceleration and gravity acceleration; collision experiments, etc.

IV. Caution
This photo shutter sensor is suitable for educational use only. It is not intended to be used for industrial, medical, research, or commercial applications.

V. Usage Tips
1. Before the experiment, the moving object should pass through the photoelectric gate several times to ensure that it moves smoothly and can effectively block light.
2. When using this sensor, if the light in the environment around the experiment is too strong, its sensitivity will be affected.
3. The photoelectric gate sensor uses high-precision photosensitive elements to form a continuous light path. By measuring the time the object (light shield) blocks the light path and combining it with its width value, the speed of the object’s movement can be calculated.