How to take the value of the light sensor and what is the principle?

With the continuous development of science and technology, more and more products are born, and our eyes cannot keep up with the progress of the times. Today, the editor will introduce to you a product that often appears in life, but we don’t know much about it, the light sensor.

For a light sensor, it is also a brightness sensor. It works on mobile phones and many tablet computers, and I have a good understanding of the value of the light sensor, which is mainly related to the current brightness value. According to the current brightness value and then set the brightness value of the screen, this is a very user-friendly setting. For example: In the daytime, when the light is sufficient, the corresponding value of the light is larger, and the brightness of the screen is brighter. Conversely, at night, the brightness becomes darker. This can bring a more convenient visual effect to the user and help protect the eyes.

Let me explain it to you in general. When you are holding the phone indoors, the light sensor may adjust the value to 10 (assumed value 0) when the light sensor senses the brightness of the external light source, and when you take the phone under the sun When the brightness of the screen is low, the light sensor will automatically adjust the screen brightness to 20 (hypothetical value).

Generally speaking, the light sensor is located on the mobile phone screen and the upper left of the tablet computer screen. The value of the light sensor can be adjusted. Under normal circumstances, it is related to the brightness setting of the mobile phone screen. Before setting, under normal circumstances, under the condition of sufficient light, the keyboard light will be off in 2-3 seconds. The keyboard light will automatically light up in the dark place. I think this is a very user-friendly setting.

The light sensor applies voltage to the metal electrodes on both ends of the photoresistor, and then it generates current. When the photoresistor is exposed to different light for a long time, the current through it will increase, otherwise the current will become smaller. The effect of photoelectric conversion. On this basis, through the value of the light sensor, a controllable situation can be realized on the basis of quantity. Light sensor, it has the characteristics of wide measuring range, good linearity and high waterproof performance. Secondly, the light sensor is easy to use, simple and quick to operate, convenient to transport, does not require high transportation costs, and can realize long-distance transportation. Widely used in modern technology, such as: vegetable greenhouses, agricultural production, urban lighting and so on. The value of the light sensor can be controlled by its basic principle and has been automated.

If you want to know more, our website has product specifications for light sensor, you can go to ALLICDATA ELECTRONICS LIMITED to get more information