Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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Filing date
Publication date
Application filed by Matsushita Electric Works LtdfiledCriticalMatsushita Electric Works Ltd
Priority to JP6558275ApriorityCriticalpatent/JPS51140592A/en
Publication of JPS51140592ApublicationCriticalpatent/JPS51140592A/en
Arrangements For Transmission Of Measured Signals
(AREA)
Abstract
PURPOSE: To precisely detect state of passageways or rooms with sounds and noises in case of emergency like a fire broken out and others at an underground market and so on.