[특허]Asynchronous serial cuvette reader

Asynchronous serial cuvette reader 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01N-021/00
출원번호	US-0760107 (1985-07-29)
발명자 / 주소	Bell Michael (Corona CA)
출원인 / 주소	Specialty Medical Industries, Inc. (Garden Grove CA 02)
인용정보	피인용 횟수 : 37 인용 특허 : 0

초록 ▼

A plurality of test cells in a cuvette is optically measured while the cuvette is manually moved through a sensing light beam. The cuvette is exposed in an open channel exposed to ambient light and is manually moved through the sensing light beam at an arbitrary rate. Abrupt changes in the optical density sensed by the beam are used to trigger the storage of the light beam intensity as an accepted measurement. The abrupt change is determined by comparing the currently read optical density of the cell against a predetermined moving average of previously read optical densities. A modulated sensing beam is received by a photodetector and converted from an analog to a digital signal by a fast A-to-D converter. The output of the A-to-D converter is coupled to a central processing unit which also includes as its input a bar code reader reading from a optically coded strip such instructions which are necessary to describe the number of cells, the test to be determined and other processing or reporting information. Abrupt changes in optical density caused by the passage of the edge of a cuvette cell triggers the generation of an accepted measurement from which an enzyme immunoassay test is performed.

대표청구항 ▼

A method of asynchronously, optically measuring the contents of a plurality of sample cells without any timing indicia comprising the steps of: manually moving said plurality of sample cells adjacent to a source of light and a detector of light; quantifying the light intensity received by said detector of light at predetermined time periods: detecting an abrupt change in said intensity of said light during one of said predetermined time periods: determining if said abrupt change in said intensity of said light persists for a predetermined number of said time periods: and storing a value corresponding to said intensity of said light quantified during one of said predetermined time periods when said step of determining establishes persistence of said abrupt change in said light intensity where said step of detecting said abrupt change in said intensity of said light comprises the steps of: computing a moving average of quantified values of said light intensity as quantified during a predetermined proceeding number of said time periods; where said step of determining includes the step of comparing a quantified value of said intensity of light to the just previously computed moving average; and where said step of storing said value corresponding to said intensity of said light is performed only if said step of comparing indicates a difference between said quantified intensity of said light over said moving average by a predetermined amount.

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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

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연합인증

Asynchronous serial cuvette reader 원문보기

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Asynchronous serial cuvette reader 원문보기

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이 특허를 인용한 특허 (37)

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