At night, in order to photograph a moving vehicle, it is necessary to set the shutter speed of the camera to be limited. Since the ambient light is relatively weak and the demand for license plate recognition cannot be satisfied, it is generally required to increase the fill light device. Some systems use electronic flashlights, prime lights and other outdoor lighting equipment. The disadvantage of this method is that it has a large power and short service life, and too strong light interferes with the driver's vision at night, posing a security risk.
The LED light just makes up for the above shortcomings, it is a cold light source, less heat, high efficiency, life of up to 80,000 hours. This year, white LED technology has developed rapidly. Because of its features of energy-saving, high-efficiency, power supply security, simple control, compact and lightweight, it is widely used in traffic systems.
The fill light can be used with various cameras, and can be applied to capture or detect the license plate system, such as parking lot, toll station, electronic*, security bayonet system, mobile auditing, monitoring and other systems.
One, LED fill light features
1, using each 1W high-power ultra-high brightness white LED lights, in the case of completely without ambient light, the camera system can take a clear license plate image.
2, no stimulus to human eyes, does not affect traffic safety.
3, uniform light spot, luminous brightness continuously adjustable.
4, low power consumption, only 6W, high efficiency
5, can stay up all night long, long life.
6, with adjustable light switch, you can set the fill light under different darkness.
7, daytime and daylight superimposed use and night independent license plate lighting can be compatible 8, daytime can be suppressed within the backlight, at night can suppress car headlight glare.
9, fill light and control in a light board, easy installation and debugging, can be directly installed in a variety of camera protective cover (such as Yaan 4512, etc.), and can be matched with a variety of CCO cameras.
Second, LED fill light composition
The light-emitting body (also called lamp beads), lens, power supply, control circuit board, housing, and wires are composed of six parts
Third, fill light main application areas
1. Parking lot systems such as residential areas, factories and government agencies.
2, red light, speeding, retrograde and other electronic * capture system
3. Public security bayonet systems such as toll stations and city entrances and exits.
4, ** mobile audit system.
5, various occasions monitoring system 6, other traffic intersections.
Fourth, LED light and halogen lamp comparison
Comparative aspects
LED fill light
Halogen
License plate image
Night capture license plate image is very clear
Night capture license plate image is not clear
Impact on the driver
No stimulation to the human eye, not affecting the driver
The lights are too bright and affect the driver's driving
Power consumption
5-6W
100-300W
life
About 80000 hours
400 hours or so
installation
Directly in the camera hood
Need poles on the pole
Value for money
The price is similar to the halogen lamp, but the effect is better and the service life is longer
Poor effect, short life
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