Optical sensing device for fluid sensing and methods therefor
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01N-021/35
G01F-023/292
G01N-021/3504
G01N-021/3577
G01N-021/31
G01N-021/85
G01N-021/27
출원번호
US-0124601
(2012-06-07)
등록번호
US-9322773
(2016-04-26)
국제출원번호
PCT/US2012/041431
(2012-06-07)
§371/§102 date
20140224
(20140224)
국제공개번호
WO2012/170743
(2012-12-13)
발명자
/ 주소
Coates, John
Qualls, Robert
출원인 / 주소
Measurement Specialties, Inc.
대리인 / 주소
Howard IP Law Group, P.C.
인용정보
피인용 횟수 :
1인용 특허 :
63
초록▼
An optical spectral sensing device for determining at least one property of a fluid. The device has an elongated porous body, a first end and a second end, a solid-state optical emitter at the first end of the body oriented to emit radiation toward the second end of the body, and a solid-state optic
An optical spectral sensing device for determining at least one property of a fluid. The device has an elongated porous body, a first end and a second end, a solid-state optical emitter at the first end of the body oriented to emit radiation toward the second end of the body, and a solid-state optical detector at the second end of the body oriented to detect radiation emitted by the optical emitter. A package for detecting properties of a fluid includes a body defining a cavity, with a movable and biased carrier for an optical detector or emitter mounted in the cavity for increased reliability. A system for determining relative concentrations of fluids in a sample includes emitter/detector pairs operating at reference wavelength and wavelengths corresponding to absorption peaks of at least two fluids, and a processor for determining concentration based on measured data and calibration data.
대표청구항▼
1. A system for determining in a sample a concentration of a first fluid in a second fluid, comprising: at least one sensor for detecting: a first intensity of radiation transmitted through the sample by a first beam of a reference wavelength;a second intensity of radiation transmitted through the s
1. A system for determining in a sample a concentration of a first fluid in a second fluid, comprising: at least one sensor for detecting: a first intensity of radiation transmitted through the sample by a first beam of a reference wavelength;a second intensity of radiation transmitted through the sample by a second beam of a first wavelength;a third intensity of radiation transmitted through the sample by a third beam of the reference wavelength;a fourth intensity of radiation transmitted through the sample by a fourth beam of a second wavelength;a processor in communication with the at least one sensor, the processor configured to calculate, based on the detected first, second, third and fourth intensities, a value of the concentration of the first fluid in the second fluid; anda memory device in communication with the processor for storing calibration data,wherein the processor is configured to calculate the value of the concentration of the first fluid in the second fluid based on the value of (the second intensity/the first intensity)−(the fourth intensity/the third intensity), and the stored calibration data. 2. The system of claim 1, further comprising a temperature sensor in communication with the processor for detecting a temperature of the sample. 3. The system of claim 2, wherein the processor is further configured to calculate the value of the concentration of the first fluid in the second fluid based on the value of the detected temperature. 4. The system of claim 1, wherein the first and second beams comprise a first path length. 5. The system of claim 4, wherein the third and fourth beams comprise a second path length different from the first path length. 6. The system of claim 1, wherein the first wavelength corresponds to an absorption peak of the first fluid. 7. The system of claim 6, wherein the second wavelength corresponds to an absorption peak of the second fluid. 8. The system of claim 7, wherein the reference wavelength is selected such that the first and third beams are not absorbed by the fluid. 9. The system of claim 8, wherein the reference wavelength is about 810 nm, the wavelength corresponding to an absorption peak of the first fluid is 970 nm, and the wavelength corresponding to an absorption peak of the second fluid is 1050 nm, whereby the system is configured to determine a concentration of urea in water. 10. The system of claim 1, wherein the at least one sensor comprises first, second, third and fourth sensors for detecting the first, second, third and fourth intensities, respectively. 11. The system of claim 10, wherein each of the first, second, third and fourth sensors comprise a detector and emitter pair. 12. A method for determining in a sample a concentration of a first fluid in a second fluid, comprising: detecting a first intensity of radiation transmitted through the sample by a first beam of a reference wavelength;detecting a second intensity of radiation transmitted through the sample by a second beam of a first wavelength;detecting a third intensity of radiation transmitted through the sample by a third beam of the reference wavelength;detecting a fourth intensity of radiation transmitted through the sample by a fourth beam of a second wavelength;determining a value of the concentration of the first fluid in the second fluid based at least in part on the detected first, second, third and fourth intensities; andaccessing stored calibration data,wherein the step of determining a value of the concentration of the first fluid in the second fluid is further based on the value of (the second intensity/the first intensity)−(the fourth intensity/the third intensity), and the stored calibration data. 13. The method of claim 12, further comprising the step of detecting a temperature of the sample. 14. The method of claim 13, wherein the step of determining a value of the concentration of the first fluid in the second fluid is further based on the value of the detected temperature. 15. The method of claim 14, wherein the calibration data comprises data indicative of: (a) values of intensity of radiation transmitted through the first fluid at (i) the reference wavelength; (ii) a wavelength corresponding to an absorption peak of the first fluid; and (iii) a wavelength corresponding to an absorption peak of the second fluid; and(b) values of intensity of radiation transmitted through the second fluid at (i) the reference wavelength; (ii) the wavelength corresponding to the absorption peak of the first fluid; and (iii) the wavelength corresponding to the absorption peak of the second fluid. 16. A method for determining in a sample a concentration of a first fluid in a second fluid, comprising: detecting a first intensity of radiation transmitted through the sample by a first beam of a reference wavelength;detecting a second intensity of radiation transmitted through the sample by a second beam of a first wavelength;detecting a third intensity of radiation transmitted through the sample by a third beam of the reference wavelength;detecting a fourth intensity of radiation transmitted through the sample by a fourth beam of a second wavelength; anddetermining a value of the concentration of the first fluid in the second fluid based at least in part on the detected first, second, third and fourth intensities,wherein the first and second beams comprise a first path length, and wherein the third and fourth beams comprise a second path length. 17. The method of claim 16, wherein the first wavelength corresponds to an absorption peak of the first fluid, wherein the second wavelength corresponds to an absorption peak of the second fluid, and wherein the reference wavelength is selected such that the first and third beams are not absorbed by the fluid. 18. The method of claim 17, wherein the reference wavelength is about 810 nm, the wavelength corresponding to an absorption peak of the first fluid is 970 nm, and the wavelength corresponding to an absorption peak of the second fluid is 1050 nm. 19. A method for determining in a sample a concentration of a first fluid in a second fluid, comprising: detecting a first intensity of radiation transmitted through the sample by a first beam of a reference wavelength;detecting a second intensity of radiation transmitted through the sample by a second beam of a first wavelength;detecting a third intensity of radiation transmitted through the sample by a third beam of the reference wavelength;detecting a fourth intensity of radiation transmitted through the sample by a fourth beam of a second wavelength;accessing stored calibration data; anddetermining a value of the concentration of the first fluid in the second fluid based at least in part on the detected first, second, third and fourth intensities, and the stored calibration data,wherein the calibration data comprises data indicative of: (a) values of intensity of radiation transmitted through the first fluid at (i) the reference wavelength; (ii) a wavelength corresponding to an absorption peak of the first fluid; and (iii) a wavelength corresponding to an absorption peak of the second fluid;(b) values of intensity of radiation transmitted through the second fluid at (i) the reference wavelength; (ii) the wavelength corresponding to the absorption peak of the first fluid; and (iii) the wavelength corresponding to the absorption peak of the second fluid; and(c) temperature-dependent interpolation data between pure first fluid and pure second fluid intensity data. 20. The method of claim 19, wherein the calibration data further comprises temperature-dependent linear interpolation data between pure first fluid and pure second fluid intensity data.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (63)
Beck,Kent F.; Malmstrom,James A.; Miles,Scott D., Adaptor for feeding sets.
Beauvais Thomas (Hamden CT) Krenke Vincent G. (Fairfield CT) Lupoli Peter J. (Hamden CT) Mattis Donald J. (Norwalk CT), Liquid level gauging apparatus.
Coates,John, Low-cost on-line and in-line spectral sensors based on solid-state source and detectors combinations for monitoring lubricants and functional fluids.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.