Window sensor and smart curtain linkage

Photosensitive sensors are one of the most common sensors. With the development of science and technology, more and more smart curtains are used. It can help people solve the troubles of manually closing curtains, and can effectively prevent strong direct sunlight and make indoor sunshine. It is more suitable for people's life and work, and ultimately makes people's lives become more and more intelligent and more and more simple.

Photosensitive sensor

Photosensitive sensors are relatively common sensors, and their types are numerous. Their sensitive wavelengths are in the vicinity of visible light wavelengths, including well-known ultraviolet and infrared wavelengths. Photosensitive sensors mainly use photosensors to convert light signals and electrical signals. The photosensitive resistor is the simplest electronic device in the photosensitive sensor. It can sense the light and dark changes of the light and output a weaker electrical signal.

Photosensitive parameters and their determination

Photosensitive parameters are as follows:

The first is light resistance. The resistance value of the photoresistor when exposed to sunlight is called bright resistance, and the current flowing at this time is called bright current.

Followed by dark resistance. The resistance value of the photoresistor when it is not exposed to sunlight is called dark resistance, and the current flowing at this time is dark current.

In addition, the photosensitive parameters also have time constants, sensitivity, temperature coefficients, and maximum operating voltage. For the determination of photosensitive parameters, it is necessary to irradiate light of different intensities onto the conductor resistance to be measured. Then, the corresponding resistance values ​​of the resistance are approximately measured by using an ammeter and a voltmeter, and the data is recorded. Finally, the corresponding formula is used. Calculate the corresponding photosensitivity.

The photosensitive resistor is the simplest electronic device in the photosensitive sensor. It is a sensitive element that is sensitive to light. It changes with the intensity of the ambient light.

Smart curtain settings

In smart curtains, the application of photosensitive sensors is the most intelligent blinds. The photosensitive sensor can automatically adjust the blinds according to the light intensity to intelligently control the indoor light, so that the indoor light is always suitable for people's lives and work, to avoid the light is too strong or too dark to bring inconvenience to people.

Smart blinds can be converted from the original blinds, and can automatically adjust the curtains according to the strength of outdoor sunlight, which is very convenient to use.