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    Home > Chemicals Industry > China Chemical > Common sensors in smart street lights: photosensitive sensors

    Common sensors in smart street lights: photosensitive sensors

    • Last Update: 2021-08-11
    • Source: Internet
    • Author: User
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    [ Focus on Chemical Machinery Equipment Network ] Smart street lighting can help cities save money and enhance services and public safety, but there are privacy issues
    .
    Smart street lights are one of the core elements of smart cities
    .

     
    Chemical machinery and equipment network hotspots pay attention to chemical machinery and equipment
    Cities can replace old street lights with more energy-efficient LED bulbs.
    They can also use wireless connections to activate street lights’ motion sensors when passers-by are approaching , and can automatically remind city management agencies when they need to replace the bulbs
    .
    Smart street lights can also enhance public safety through network monitoring and environmental monitoring
    .

     
    sensor
    Automatic control circuit in street lights, it is a common sensor in intelligent lighting
    .
    The photosensitive sensor is an ideal electronic sensor that can control the automatic switch of the circuit due to the change of the illuminance at dawn and dark (sunrise, sunset)
    .
    The photosensitive sensor can automatically control the opening and closing of the LED lighting fixtures according to the weather, time period and region
    .

     

    During the bright day, the power consumption can be reduced by reducing its output power.
    Compared with the use of fluorescent lights, a convenience store with an area of ​​200 square meters can reduce power consumption by up to 53%, and its life span is about 50,000 to 100,000 hours
    .
    Under normal circumstances, the life of LED lighting fixtures is about 40,000 hours; the color of the light can also be changed in RGB (red, green and blue) colorful ways to make the light more colorful and the atmosphere more active
    .

     

    Its wide range, there are: a photoelectric tube, a photomultiplier tube, photoresistors, phototransistors, solar cells, infrared sensors, ultraviolet sensors, optical fiber type photoelectric sensor, a color sensor, the CCD and CMOS image sensor
    .
    Mainly used in solar lawn lights, light control night lights, cameras, monitors, light control toys, sound and light control switches, cameras, anti-theft wallets, light control music boxes, birthday music candles, music cups, human body induction lights, human body induction switches And other electronic products light automatic control field
    .

     

      The light sensor is one of the sensors with the largest output and the most widely used at present, and it occupies a very important position in automatic control and non-electrical measurement technology
    .
    A simple photosensitive sensor is a photosensitive resistor, and when a photon hits the junction, an electric current is generated
    .

     

      The photosensitive sensor is a sensor that uses a photosensitive element to convert a light signal into an electrical signal.
    Its sensitive wavelength is near the wavelength of visible light, including infrared wavelengths and ultraviolet wavelengths
    .
    The light sensor is not only limited to the detection of light, it can also be used as a detection element to form other sensors to detect many non-electric quantities, as long as these non-electric quantities are converted into changes in light signals
    .

     

      Original title: Commonly used sensors in smart street lights: photosensitive sensors
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