[특허]Method and apparatus for detecting and locating a selected non-metallic material in a detection region

Method and apparatus for detecting and locating a selected non-metallic material in a detection region 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01N-022/00 G01R-027/26
출원번호	US-0678975 (1991-06-19)
우선권정보	GB-0025435 (1988-10-31)
국제출원번호	PCT/GB89/01298 (1989-10-31)
§371/§102 date	19910619 (19910619)
국제공개번호	WO-9005299
발명자 / 주소	Cross Thomas E. (Nottingham GB3)
출원인 / 주소	Zetetic International Limited (Nottingham GB2 03)
인용정보	피인용 횟수 : 58 인용 특허 : 0

초록 ▼

Particular non-metallic materials are detected by a recognition of the way in which their electrical properties vary with the frequency of an applied alternating electric field. In one method a body being tested is subjected to electromagnetic radiation at each of a plurality of different frequencies, the pattern of variation of the body\s reflectivity is evaluated and compared with stored information on the conductivity/frequency characteristic of the non-metallic material to be deleted. In another method a body being tested is subjected to a burst of electromagnetic energy and a measurement is made of the time taken for the body to retransmit energy absorbed from the burst.

대표청구항 ▼

A method for detecting and locating a selected non-metallic material in a detection region, comprising the steps of: a) successively transmitting electromagnetic radiation at a first frequency into the detection region from each of a first set of spatially separated locations; b) for each successive transmission at said first frequency, at a second set of spatially separated locations in the detection region, detecting transmitted radiation and/or radiation reflected by the contents of the detection region; c) producing a first set of signals indicative of the intensity of radiation at said first frequency detected in the successive detecting steps; d) repeating steps a) to c) using electromagnetic radiation at a second frequency to produce a second set of signals being indicative of the intensity of radiation at said second frequency detected in the successive detecting steps, the reflective properties of said selected non-metallic material at said second frequency being different from those at said first frequency; and e) analysing and comparing the first and second sets of signals to produce information on the location of objects in the detection region composed of the selected non-metallic material.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
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연합인증

Method and apparatus for detecting and locating a selected non-metallic material in a detection region 원문보기

초록 ▼

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Method and apparatus for detecting and locating a selected non-metallic material in a detection region 원문보기

초록 ▼

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연구과제 타임라인

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이 특허를 인용한 특허 (58)

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