To provide a road-surface determination apparatus capable of determining the state of a road surface while costing less.SOLUTION: A road-surface determination apparatus 1 is incorporated in a vehicle 100 enabled for an automatic operation. The road-surface determination apparatus 1 includes: a lighting device 11 for illuminating externally to the vehicle 100 toward a road surface traveled by the vehicle 100 with a lamp indicating that the vehicle 100 is engaged in an automatic operation; an optical receiver 12 for receiving reflecting light of the lamp from the road surface; a calculation part 14 for calculating a reflectance ratio of the road surface to the lamp on the basis of optical intensity of the lamp and that of the reflecting light received by the optical receiver 12; and a determination part 15 for determining a state of the road surface on the basis of the aforementioned reflectance ratio.SELECTED DRAWING: Figure 2

    【課題】コストを低減しつつ、路面の状態を判定可能な路面判定装置を提供する。【解決手段】自動運転が可能な車両100に搭載された路面判定装置1であって、路面判定装置1は、車両100の外部に向けて車両100が自動運転中であることを示す灯火を、車両100が走行する路面に向けて照射する灯火器11と、路面からの灯火の反射光を受光する受光器12と、灯火の光強度と、受光器12が受光した反射光の光強度とに基づいて、灯火に対する路面の反射率を算出する算出部14と、当該反射率に基づいて、路面の状態を判定する判定部15と、を備える。【選択図】図2


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    Title :

    ROAD-SURFACE DETERMINATION APPARATUS


    Additional title:

    路面判定装置


    Contributors:

    Publication date :

    2023-12-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES



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