A marker detection device which detects a magnetic marker laid in a road by using a sensor unit (11) in which a plurality of combinations of a magnetic sensor (Sn) and a magnetic-field generation coil (Cn) are arranged includes a storage part (112) which stores characteristic information of each magnetic-field generation coil (Cn), an estimation part (112) which estimates a magnetic differential value A acting on the magnetic sensor (Sn) due to a current differential value A acting on the magnetic-field generation coil (Cn) by referring to the characteristic information of each magnetic-field generation coil (Cn), and a calibration part (112) which calibrates each magnetic sensor (Sn) so as to enhance uniformity in sensitivity, which is a ratio between an output differential value A of the magnetic sensor (Sn) in accordance with a change of a current by the current differential value A acting on the magnetic-field generation coil (Cn) and the estimated magnetic differential value A.
MARKER DETECTING SYSTEM, AND METHOD FOR OPERATING MARKER DETECTING SYSTEM
MARKIERUNGSDETEKTIONSSYSTEM UND VERFAHREN ZUM BETRIEB EINES MARKIERUNGSDETEKTIONSSYSTEMS
SYSTÈME DE DÉTECTION DE MARQUEUR ET PROCÉDÉ DE MISE EN OEUVRE DE SYSTÈME DE DÉTECTION DE MARQUEUR
2022-01-05
Patent
Elektronische Ressource
Englisch
MARKER DETECTION SYSTEM AND METHOD OF OPERATING MARKER DETECTION SYSTEM
Europäisches Patentamt | 2021
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