Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With waveguide or long line
Patent
1988-05-17
1989-03-21
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With waveguide or long line
324520, 455 67, G01R 2300
Patent
active
048146943
ABSTRACT:
Disclosed is a system for detecting and processing an abnormality in electromagnetic shielding for use in an intelligent building which is constructed using an electromagnetic shielding material for the skeleton and openings such as windows and doorways so that the whole of the building is formed into an electromagnetic shielding structure in order to carry out radio communication inside the building. The system has radio wave detecting means for detecting an external radio wave inside the building, level judging means for judging the level of an external radio wave detected by the radio wave detecting means, and processing means for detecting and processing an abnormality on the basis of an output from the level judging means, whereby an abnormality in the electromagnetic shielding performance is detected on the basis of the intensity level of a detected radio wave intruding into the building from the outside. When the electromagnetic shielding performance has deteriorated, external radio waves such as broadcast waves, telecast waves, etc. intrude into the building. Therefore, any of these radio waves is constantly monitored by the radio wave detecting means inside the building. Thus, when the electromagnetic shielding performance has considerably deteriorated, the abnormality can be detected by judging the level of the detected radio wave with the level judging means.
REFERENCES:
patent: 3531577 (1970-09-01), Garlington et al.
patent: 4072899 (1978-02-01), Shimp
patent: 4631473 (1986-12-01), Honda
Ishikawa Toshiyuki
Nagata Koji
Nakamura Masatake
Takahashi Takeshi
Yabana Yoshiji
Eisenzopf Reinhard J.
Miele Anthony L.
Shimizu Construction Co. Ltd.
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