CAVITY DETERMINATION DEVICE AND CAVITY DETERMINATION METHOD AND CAVITY DETERMINATION PROGRAM

• Main Authors: KUSUNOKI SADANORI, MIURA TERUHISA, FUKAWA KAZUKI, IIZASA SHINYA, YAMADA TOMONORI, IKEDA HIROTSUGU
• Format: Patent
• Language: English; Japanese
• Published: 20.10.2023
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETECTING MASSES OR OBJECTS; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

To provide a cavity determination device, a cavity determination method, and a cavity determination program that can reduce the time required for cavity survey of lining concrete, improve quality (reduction of variation), and save manpower.SOLUTION: A cavity determination device 1 comprises: an input part 31 that inputs measurement data D1 that is data of reflection waves obtained by irradiating electromagnetic waves to a measurement point; a preprocessing part 32 that conducts preprocessing for obtaining extreme value data concerning an extreme value of reflection waves from the measurement data D1 inputted from the input part 31; and a determination part 33 that determines whether or not there is a cavity at the measurement point where the measurement data inputted to the input part 31 was obtained using a learned model MD that shows a relationship between the extreme value of the reflection wave and presence or absence of a cavity that has been learned using extreme value data concerning the reflection wave and teacher data indicating the presence or absence of a cavity at the measurement point where the reflection waves was obtained, and the extreme value data obtained in the preprocessing part 32.SELECTED DRAWING: Figure 7 【課題】覆工コンクリートの空洞調査に要する時間の短縮、品質向上（バラツキ低減）、及び省人化を図ることができる空洞判定装置、空洞判定方法、及び空洞判定プログラムを提供する。【解決手段】空洞判定装置１は、計測点に電磁波を照射して得られる反射波のデータである計測データＤ１を入力する入力部３１と、入力部３１から入力される計測データＤ１から、反射波の極値に関する極値データを取得する前処理を行う前処理部３２と、反射波の極値に関する極値データと、反射波が得られた計測点における空洞の有無を示す教師データとを用いて学習された、反射波の極値と空洞の有無との関係を示す学習済みモデルＭＤと、前処理部３２で取得された極値データとを用いて、入力部３１に入力された計測データが得られた計測点における空洞の有無を判定する判定部３３と、を備える。【選択図】図７