Patent ID: 11915461
Assignee: nan
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A tread or tire detection arrangement (1) for the classification of vehicular traffic, comprising: a cabinet (2) that houses a plurality of sensing units (6); characterized in that each one of the sensing units (6) is formed by a permanent magnet (3) and a Hall effect sensor (4), wherein in each sensing unit, said magnet (3) creates a magnetic field that flows in a vertical direction to the Hall effect sensor, a change in the strength of the magnetic field due to the presence of a tire is detected by the Hall effect sensor, and the Hall effect sensor (4) creates an output voltage proportional to the change in the magnetic field strength;
the arrangement further comprising a multi-pair cable (8), wherein a first pair (8A) of the multi-pair cable (8) supplies the sensing units (6), a conditioning unit (12) and a microcontroller (7) with a supply voltage, a second pair (8B) communicates data to and from a remote terminal by EIA RS485/232 or USB protocol; a third pair (8C) works as an ON/OFF output for indication of the presence of a single wheel and a fourth pair (8D) works as an ON/OFF output for an indication of the presence of a double wheel.