RFID vs ANPR for Weighbridge Vehicle Identification

Accurate vehicle identification is the foundation of unmanned weighbridge operation. Two technologies dominate industrial gate automation: RFID and ANPR (Automatic Number Plate Recognition). Each has strengths, and many modern installations use both.

RFID (UHF tags on windscreen or bracket): - Fast read at 8–12 metre range without stopping - Works reliably in dust, rain, and low light - Best for fixed fleets: cement trucks, mining tippers, contract carriers - Requires tag issuance and database management

ANPR (camera-based plate recognition): - No tag required—uses registration number - Ideal for mixed or visiting vehicles - Provides photographic evidence with each transaction - Accuracy depends on camera placement, plate condition, and lighting

Dual-mode (recommended for most plants): RFID handles registered fleet vehicles at high speed. ANPR captures plate data as backup and for unregistered visitors. Mismatch alerts flag potential fraud or tag swap attempts.

Integration with weighing software: Identification events trigger the weighbridge software workflow—opening barriers, linking weight to vehicle ID, and storing CCTV snapshots. SETU systems support REST API, SAP, and Tally integration for seamless ERP posting.

Choosing the right identification strategy depends on your fleet mix, gate layout, and compliance requirements. SETU engineers conduct a site survey and recommend RFID, ANPR, or dual-mode configuration based on real traffic patterns.