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What is the best light for the underground garage?
Due to the long lighting time of underground garage, the life of lamps will be shorter than that of ordinary lamps. And because there is no one at night, the lights are wasted, and continuous lighting is not conducive to energy saving. Therefore, the lighting of the underground garage should be intelligent, with the coming lights on and the walking lights dim. At present, the best intelligent lighting scheme is radar induction LED fluorescent lamp. Before the appearance of radar-induced LED fluorescent tubes, acoustic LED fluorescent tubes or human infrared LED fluorescent tubes were generally used in underground garages. Both of them have certain defects. Firstly, the voice-activated LED fluorescent lamp detects and amplifies the sound of the surrounding environment through the microphone, and the subsequent circuit works after detecting the trigger signal. Affected by environmental noise. The sensing distance is related to the sound emitted by the object. The light may always be on when the surrounding environment is noisy, but it may not be triggered when it is too quiet, which is greatly affected by the environment, temperature and dust. The microphone needs to be exposed. Because the sensitivity of voice-activated induction is greatly influenced by the environment, it is not suitable for parking lots, but can be used for aisle lighting. Secondly, the human body induction LED fluorescent tube, the human body temperature is constant, generally at 37 degrees, so it will emit infrared rays with a specific wavelength of about 10um, and the passive infrared probe works by detecting the infrared rays emitted by the human body. The infrared ray is enhanced by Fresnel filter and then concentrated on the infrared induction source. The infrared induction source usually adopts pyroelectric elements. When the temperature of infrared radiation received by human body changes, it will lose the charge balance and release the charge to the outside. The subsequent circuit can trigger the switch action after detection and processing. The sensing distance is general, the angle is relatively small, and it is greatly influenced by environment, temperature and dust. At 37 degrees, the sensing distance will be shortened. The detection infrared sensor head needs to be exposed, which is inconvenient to install. The infrared induction of human body is not suitable for parking lot because of its poor response sensitivity, and can be used for aisle lighting. Radar-induced LED fluorescent lamp overcomes the above two shortcomings. The principle of radar-induced LED fluorescent lamp is to emit electromagnetic waves through a plane antenna. When a moving object enters the electromagnetic wave environment, the waveform is reflected and folded back. When the planar antenna receives the feedback waveform, the subsequent circuit works by detecting the trigger signal. The sensing distance is longer, the angle is wide, there is no blind area, and it can penetrate glass and thin wood board, and it is not affected by environment, temperature and dust. In the case of 37 degrees, the sensing distance will not be shortened.
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