ANPR Weighbridge: Automatic Number Plate Recognition Explained
Automatic Number Plate Recognition (ANPR) Weighbridge Systems use specialized optical cameras and character recognition algorithms to automatically capture vehicle license plate numbers as trucks drive onto the weighbridge scale. ANPR eliminates manual plate typing, prevents typos, and speeds up weighing throughput for high-traffic tollways, ports, and mines.
How ANPR Weighbridge Cameras Work
1. Optical Capture & License Plate Detection
Infrared pulsed illuminators illuminate standard and high-reflectance Indian license plates (e.g. GJ, MH, RJ, KA) day and night, capturing crisp images regardless of headlights or darkness.
2. Character Recognition & State Code Decoding
The camera engine extracts state codes, RTO numbers, and registration digits, populating the software's ‘Vehicle No’ field. Performance depends on the selected camera, lighting, mounting and plate condition.
3. Axle Weight & Overload Calculation
For highway weigh-in-motion (WIM) systems, ANPR logs individual axle weights, comparing total gross weight against RTO legal axle load limits to issue instant overload challans.
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HKDesk provides high-speed ANPR cameras, license plate reading software, and axle weighbridge integration.
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