Photogate Wireless Sensor

I. Working principle

The photoelectric door 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; due to external objects (such as light shields) When the infrared pulse is blocked by the photoelectric gate so that the receiving end cannot receive the signal, a low level is output, and the collector calculates the time it takes for the external object to pass through the photoelectric gate, thereby timing.

II. Specifications

Accuracy 1 µs.

Wavelength 940nm.

Receiver sensitivity (RX): – 90 dBm.

III.Structure and function

1. The sensor terminal comes with a 1.8-inch color LCD screen.
2. The sensor terminal is equipped with 5 function buttons.The operation interface is simple and convenient.
3. The sensor terminal supports high-speed USB data channel, which enables high speed transmission of the data from the terminal to other devices such as PC, tablet or mobile phone.
4. The sensor terminal supportswireless communication with experimental terminals.
5. The sensor terminal has a built-in removable batterywith a capacityof 1800mAh.
6. The sensor terminal is designed with a hidden buckle sensor interface to support combined experiments with other sensors.
7. The sensor terminal has designed a fixation spot to get itfixed on the iron frameconveniently and combined with traditional lab equipment for experiments.
8. The sensor terminal supports the latest operating systems,such as iOS, Android, windows operating systems, etc.
9. Software with permanent use in digital laboratories in Kazakh and Russian languages. Designed for practical and laboratory work in the physics module of the school curriculum.

IV.Typical applications

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.

V.Caution

This product is suitable for educational use only and is not suitable for industrial, medical, research, or commercial applications.

VI.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 photogate 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.
4. When multiple photogate sensors are used at the same time, it can not only measure the time when the light barrier passes through each photogate, but also can measure the time when the light barrier runs between the photogates.
5. The photoelectric gate sensor (double hole) and the color screen double photoelectric gate sensor have the same principles and usage methods.