As the fourth generation new luminaire, the remarkable advantage of LED lighting fixture is energy saving and low carbon without any pollution. Depending on the feature of high efficiency, long lifetime and environmental protection, LED lighting has gradually become the focus that people concern. In recently years, due to rapidly advancement of manufacturing technology and the decline of production cost, the selling price of LED light source has continuously decreased. Now, LED light has turned into the voracious demand of the world, while an emerging industry which mainly produces LED lighting fixture has risen abruptly.
The biggest difference between LED light and traditional light is that LED light belongs to electronic products while tradition light is just an electric appliance. Therefore, LED light is very convenient to connect with different kinds of sensor to realize a variety of automatic control function, including light control, infrared control and so on. For example, the automatic switch of LED Street Light , it only needs a photocell sensor to automatically turn on or off the lighting fixture.
So far, the most widely used sensors are photocell sensor, PIR sensor and motion sensor. Photocell sensor is an ideal sensor, which is able to automatically control the switch of LED light with the change of weather, time and region. It could decrease the output power to reduce power consumption in the daytime, while at night it would increase the output power to add brightness. PIR sensor detects people motion by comparing the infrared energy emitted by moving objects with the background space. Users can adjust sensitivity, time delay, and other settings via a switch. Photocell version can prevent lighting from turning on if adequate daylight is available. Motion can be detected through plastic, glass and thin non-metal materials by motion sensor. The most benefit of motion sensor is that it allows energy saving without compromising comfort.