DIAGNOSTIC DEVICE

• Main Author: KITA KOICHI
• Format: Patent
• Language: English; Japanese
• Published: 18.06.2020
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

To provide a diagnostic device which diagnoses the soundness of an electronic circuit as a diagnostic object regardless of the kind of the electronic circuit as a diagnostic object.SOLUTION: A diagnostic device 1 includes: an antenna substrate 10 which is arranged adjacent and opposed to an electronic circuit 2 as a diagnostic object, and whose opposed face has a plurality of antennas 20 in an array; a frequency analysis section 30 for deriving a representative intensity from electromagnetic noise which is generated by the electronic circuit 2 and has been detected by each of the antennas 20 for each of a plurality of frequency bands; and a characteristic amount derivation section 32 for deriving the amount of characteristics based on the plurality of representative intensities derived by the frequency analysis section 30 for each of the antennas 20.SELECTED DRAWING: Figure 1 【課題】診断対象の電子回路の種類によらず、診断対象の電子回路の健全性を診断する。【解決手段】診断装置１は、診断対象となる電子回路２に隣接して対向配置され、対向面に複数のアンテナ２０がアレイ状に設けられたアンテナ基板１０と、アンテナ２０の各々において検出された電子回路２が発する電磁ノイズについて、複数の周波数帯域ごとに代表強度を導出する周波数解析部３０と、周波数解析部３０で導出された複数の代表強度に基づいた特徴量をアンテナ２０ごとに導出する特徴量導出部３２と、を備える。【選択図】図１