SPECTRAL CURVE ACQUIRING DEVICE AND CONCRETE MEASURING APPARATUS, AND SPECTRAL CURVE ACQUIRING METHOD AND CONCRETE MEASURING METHOD

PROBLEM TO BE SOLVED: To provide a spectral curve acquiring device capable of acquiring a spectral curve and a concrete measuring apparatus, and a spectral curve acquiring method and a concrete measuring method for acquiring information associated with accurate salt damage and neutralization even when concrete is remotely measured.SOLUTION: A spectral curve acquiring device comprises: a projection optical system 6 which emits irradiation light; a light reception optical system 8 which spectrally diffuses and receives reflected irradiation light reflected by a measurement object 7; a distance meter 4 which measures the distance to the measurement object; a storage part 25 which stores a plurality of reference spectral curves generated based upon light reception intensities by wavelengths when a white reference plate is measured at different distances; and a control arithmetic part 24. The control arithmetic part finds a light reception intensity of each wavelength of the reflected irradiation light which is spectrally diffused based upon the reference spectral curve corresponding to the measurement distance, corrects the measurement spectral curve generated based upon the light reception intensity, and generates a spectral reflective index curve.SELECTED DRAWING: Figure 3 【課題】コンクリートを遠隔測定する場合でも、正確な塩害や中性化に関係する情報を取得する為の分光曲線を取得可能とする分光曲線取得装置及びコンクリート測定装置及び分光曲線取得方法及びコンクリート測定方法を提供する。【解決手段】照射光を照射する投光光学系６と、測定対象物７で反射された反射照射光を分光して受光する受光光学系８と、前記測定対象物迄の距離を測定する距離計４と、異なる距離で白色基準板を測定した際の波長毎の受光強度を基に作成された複数の基準分光曲線を格納する記憶部２５と、制御演算部２４とを具備し、該制御演算部は、測定距離に対応した前記基準分光曲線に基づき、分光された前記反射照射光の波長毎の受光強度を求め、該受光強度を基に作成された測定分光曲線を補正し、分光反射率曲線を作成する。【選択図】図３