License Plate Cameras for Vehicle Monitoring

 

One of the basic principles of visual surveillance is to monitor choke points. Probably one of the most productive methods for monitoring these points is a security camera used as a vehicle "License Plate Camera" (LPC). These systems create a video record of each car and truck visiting your property.

Private communities, hotels and casinos, private estates, banks, and critical infrastructure are all logical markets for license plate recorders. LPC systems offer a security enhancement in an unobtrusive form.

License Plate Camera Requirements

Generally a LPC system will be designed to capture the image of the rear of the vehicles. Currently 19 States do not require a front license plate. This number is likely to grow because of our economic environment which is straining state budgets (each plate can cost a little more than $1 to produce).

In most installations, the entrance to a parking area will be used for the LPC. Better license plate camera equipment can automatically compensate for the speed of the vehicle. Lighting must be considered as a factor in equipment selection. Outdoor lighting can vary by a factor of 10,000. Less sophisticated cameras use a fixed iris. For outdoor applications, an "auto-iris" is needed. This compensates for the ambient light and dramatically improves performance.

The viewing angle, both horizontal and vertical, from the camera to the automobile should be less than 40 degrees. Larger angles will distort the view and make recognition difficult if not impossible.

 

B.V. Technology License Plate Camera Specifications:

·  Model Number: 1195Z with "Eclisper".  The Eclisper allows the camera to look directly into a vehicle’s head-lights to record the objective

·  Wide Dynamic Range:  the camera can record simultaneously bright and dim features (more information on wide dynamic range cameras),

·  570 Line Horizontal Resolution:  sufficient detail to identify numbers and letters,

·  Automatic adjustment of the electronic shutter according to the car speed,

·  Back-Light Compensation:  auto back light compensation through BMBTM (Black Mask BLC) technology

·  Sensitivity: 0.001 Lux (1/100th of the light of a full-moon),

·  Lens: standard is 6-60mm varifocal auto iris lens allows the camera to focus on the target,

·  CCD Sensor: Sony Ex-view 1/3” Image Sensor: the sensor by which all other sensors are measured.

 

*    License Plate Recorder Design Worksheet

*      Contact B.V. Technology

*      Website: BV4Tech.com

 

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