A road information detection apparatus acquires road information with high accuracy regardless of weather conditions and time of day. The road information detection apparatus acquires the road information by emitting a beam from a variable directivity transmission antenna to a road sign having a plurality of flat portions. The road information detection apparatus includes a transceiver circuit that controls the transmission antenna to scan the beam by switching an emission angle which includes an azimuth angle relative to the front direction of a vehicle and receives, as reflected wave signals, reflected waves produced when the beam is reflected by the plurality of flat portions, a distance and reflected wave intensity detection unit that detects a distance between the vehicle and each of the flat portions and the reflected wave intensity of each of the reflected waves reflected by the flat portions, an emission angle detection unit that detects the emission angle of each of the beams on the basis of the reflected wave signal, and a road information analysis unit that acquires the road information by generating a heat map on the basis of each of the emission angles, each of the distances, and the reflected wave intensity of each of the reflected waves and analyzing the heat map by using a threshold value of the reflected wave intensity.


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    Title :

    ROAD INFORMATION SENSING DEVICE AND ROAD INFORMATION SENSING METHOD


    Additional title:

    STRASSENINFORMATIONERFASSUNGSVORRICHTUNG UND STRASSENINFORMATIONSERFASSUNGSVERFAHREN
    DISPOSITIF DE DÉTECTION D'INFORMATIONS ROUTIÈRES ET PROCÉDÉ DE DÉTECTION D'INFORMATIONS ROUTIÈRES


    Contributors:

    Publication date :

    2019-11-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01S RADIO DIRECTION-FINDING , Funkpeilung / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES , Systeme zum Steuern oder Regeln nichtelektrischer veränderlicher Größen



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