As high-rise buildings, commercial centers and rapid expansion in the number of underground parking garage, agencies and institutions and the grade is higher and higher, facilities more and more complex, the energy consumption is larger and larger. Sheet in terms of lighting, the energy consumption under the covers an area of about 80% of the parking lot operation energy consumption. Underground parking lot once by the straight tube fluorescent lamp 'unify the whole country', because of the lack of effective means of lighting energy saving technology and management ideas, this site has been standardized lighting with high energy consumption, reducing power consumption and the dark environment, save cost many contradictions with the owner property dispute, etc. Underground parking lot lighting, because it is a long time continuous lighting, if using ordinary LED fluorescent lamp lighting, one is the lamp bead is affected by high temperature for a long time, decay quickly; Second, no one in the middle of the night, a waste of electricity, therefore, to solve the underground parking lot lighting, it is necessary to do greatly prolongs the service life of the LED fluorescent lamp, to energy saving at the same time, this is must consider the parking lot of the environment, be intelligent. With years of experience in the LED research and development, the analysis of three kinds of LED lighting solution scheme of a parking lot. As closely to the advanced pace of the industry, the general parking lot LED energy-saving lighting with the human body infrared sensing technology and radar microwave induction technology and electric induction electronic technology, because of the shape design elegant, fashionable, good heat dissipation performance, high luminance, luminous evenly, not dazzling, and can delay automatic extinguishing human body infrared sensor series products, has become the best choice of the parking lot. Three kinds of solutions tied for acoustic detection is the feature of the voice of surroundings, if the environment is too noisy, is easy to have bright light; On the other hand, if too quiet around, may not trigger, so it's very important to sensitivity Settings, aiming at this problem, a sensitivity and time is adjustable, the user can according to the surrounding environment to set sensor sensitivity. The characteristics of the human body induction program is to detect the human body from the pyroelectric infrared, using Fresnel lens of the human body infrared energy collection, an obese people, the infrared energy more, on the other hand, the issue of infrared energy less skinny people, therefore, fat and skinny people induction sensitivity is different, generally for 2 - induction distance 4 meters, and should be suitable for some occasions. As a result of the pyroelectric infrared sensor is to detect the human body infrared, the body temperature is 37. 5 degrees, and the temperature of the LED daylight lamp holder near 40 - general 45 degrees or so, so by the fluorescent lamp and interference of light and temperature is larger. Aiming at this problem, especially developed a light insulation and heat insulation of lamp holder, can effectively solve the problem of light interference and the interference of hot. General recommendation, the human body induction of the fluorescent lamp is more adapted to the corridor, if applied to the parking lot, need to carefully confirm the surrounding environment and people's relationship. In use for the first time, need a CPU cycles of reset time, for the second time to trigger is accurate. Intelligent radar sensing scheme is initiative, the plan is mainly using the doppler principle, 5. Around 8 GHZ microwave radar signal, when there is a moving object within the electromagnetic field into the radar, can feedback signal to the receiving circuit, and trigger a change of work condition of the circuit. General induction distance can be achieved for the 5 - - 9 meters, as long as the moving object can trigger. Although objects within the scope of the trigger, if you don't move, still won't trigger. Radar sensor can penetrate non-metallic objects, such as gypsum board, wood, etc. , especially suitable for the concealed installation. Radar sensor is affected by interference is small, and the sensitivity and high, particularly suitable for underground parking lot lighting solution.