US 8,711,006 B2Granted

Vehicle detection apparatus and method using magnetic sensor

AssigneeElectronics and Telecommunications Research Institute

InventorsJae-Jun Yoo, Do-Hyun Kim, Jong-Hyun Park, Kyong-Ho Kim, Jong-Woo Choi

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Abstract

The vehicle detection apparatus includes a communication unit, a magnetic sensing unit, a calibration information generation unit, a vehicle detection unit, and a control unit. The communication unit receives information about movement of a reference vehicle from a central management center. The magnetic sensing unit senses the change in a magnetic field attributable to the movement of a vehicle, and generates a magnetic signal. The calibration information generation unit generates calibration information. The vehicle detection unit calibrates the change in the magnetic signal attributable to movement of an actual vehicle based on the calibration information, and detects the movement of the actual vehicle. The control unit controls the above units, and sets the mode to calibration information generation mode in order to generate the calibration information and to vehicle detection mode in order to sense the movement of the actual vehicle.

Claims14

Dependent claims

A vehicle detection apparatus using a magnetic sensor, comprising:

a communication unit for receiving information about movement of a reference vehicle from a central management center;
a magnetic sensing unit for sensing a change in a magnetic field attributable to movement of vehicles, and generating a magnetic signal based on the change in the magnetic field;
a calibration information generation unit for generating calibration information by using the information about the movement of the reference vehicle and the change in the magnetic signal attributable to the movement of the reference vehicle;
a vehicle detection unit for calibrating a change in a magnetic signal attributable to movement of an actual vehicle, the magnetic signal being generated by the magnetic sensing unit, based on the calibration information generated by the calibration information generation unit, and detecting the movement of the actual vehicle by analyzing the calibrated change in the magnetic signal;
and
a control unit for controlling the communication unit, the calibration information generation unit and the vehicle detection unit, and setting mode to one of a calibration information generation mode for generating the calibration information and a vehicle detection mode for detecting the movement of the actual vehicle.

3 more elements

A vehicle detection method using a magnetic sensor, comprising:

detecting, by a magnetic sensing unit, a change in a magnetic signal attributable to movement of a reference vehicle;
receiving, by a communication unit, information about the movement of the reference vehicle from a central management center;
generating, by a calibration information generation unit, calibration information by using the information about the movement of the reference vehicle and the change in the magnetic signal attributable to the movement of the reference vehicle;
measuring, by the magnetic sensing unit, a change in a magnetic signal attributable to movement of an actual vehicle;
calibrating, by a vehicle detection unit, the change in the magnetic signal attributable to the movement of the actual vehicle based on the calibration information;
and
detecting the movement of the actual vehicle by analyzing the calibrated change in the magnetic signal.

4 more elements

Dependencies are inferred from the claim text.