Method and apparatus for monitoring liquid level in a container
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01F-023/00
G01F-023/30
출원번호
US-0779330
(2001-02-08)
발명자
/ 주소
Keller, John M.
대리인 / 주소
Gardner Groff & Mehrman, P.C.
인용정보
피인용 횟수 :
14인용 특허 :
6
초록▼
A method and system for remote monitoring of liquid level 21 within a container 12, such as the level of fuel within a propane cylinder. A magnetic float 20 disposed within the container 12 floats on the liquid 21, and lowers with the liquid level as fuel is consumed. Magnetic sensors 22 outside the
A method and system for remote monitoring of liquid level 21 within a container 12, such as the level of fuel within a propane cylinder. A magnetic float 20 disposed within the container 12 floats on the liquid 21, and lowers with the liquid level as fuel is consumed. Magnetic sensors 22 outside the container 12 sense the float 20 as it passes in the proximity of one of the sensors 22. A controller 26 receives output signals from the sensors 22 and transmits level indicating signals to a gauge 28 or other indicator for remote indication of the corresponding liquid level. The indicator 28 can be located proximal the user's direct line of sight, to remind the user to periodically monitor the fuel level to prevent running out of fuel.
대표청구항▼
A method and system for remote monitoring of liquid level 21 within a container 12, such as the level of fuel within a propane cylinder. A magnetic float 20 disposed within the container 12 floats on the liquid 21, and lowers with the liquid level as fuel is consumed. Magnetic sensors 22 outside the
A method and system for remote monitoring of liquid level 21 within a container 12, such as the level of fuel within a propane cylinder. A magnetic float 20 disposed within the container 12 floats on the liquid 21, and lowers with the liquid level as fuel is consumed. Magnetic sensors 22 outside the container 12 sense the float 20 as it passes in the proximity of one of the sensors 22. A controller 26 receives output signals from the sensors 22 and transmits level indicating signals to a gauge 28 or other indicator for remote indication of the corresponding liquid level. The indicator 28 can be located proximal the user's direct line of sight, to remind the user to periodically monitor the fuel level to prevent running out of fuel. t, Chicago, Illinois, Jul. 16-18, 1990, Proceedings. Lambert et al., "An air flow sensor based on interface thermal wave propagation", J. Appl. Phys., 59(1), Jan. 1986, 3 pages. Mylroi, "Cross-Correlation Flow Measurement Systems", G.B., 12, No. 6-7, 1977, 4 pages. (No Date). Ohnstein et al., "Environmentally Rugged Wide Dynamic Range Microstructure Airflow Sensor", IEEE Solid-State Sensor and Actuator Workshop, Hilton Head, South Carolina, Jun. 1990, Technical Digest, p. 158. J. H. Hujising et al., "Developments in Integrated Smart Sensors", Transducers '93, Yokohama, Japan, Jun. 7-10, 1993, Proceedings, p. 320. J. K. Zelisse et al., "Thermal Sigma-Delta Signal Modulator for Wind Speed and Direction Measurement" Eurosensors V, Rome, Italy, Sep. 30-Oct. 2, 1991, Proceedings, p. 303. Bonne, Sensing Fuel Properties with Thermal Microsensors, SPIE Smart Electronics and MEMS Conference, San Diego, California, Feb. 25-29, 1996, Paper No. 2722-24, Proceedings, p. 165. Protodyanakonow et al., "The Use of Probes in Investigating Two-Phase Flow", Fluid Mech., Soviet Res., 12, No. 3, (May-Jun. 1983), pp. 98-157. U.S. patent application Ser. No. 09/002,157, filed Dec. 31, 1997, entitled "Time Lag Approach For Measuring Fluid Velocity". U.S. patent application Ser. No. 09/001,735, filed Dec. 31, 1997, entitled "Self-Oscillating Fluid Sensor". U.S. patent application Ser. No. 09/001,453, filed Dec. 31, 1997, entitled "Fluid Property and Flow Sensing Via a Common Frequency Generator and FFT". U.S. patent application Ser. No. 09/207,165, filed Dec. 7, 1998, entitled "Rugged Fluid Flow and Property Microsensor". U.S. patent application Ser. No. 09/482,441, filed Jan. 10, 2000, entitled "Self-Normalizing Flow Sensor and Method for the Same". U.S. patent application Ser. No. 09/239,125, filed Jan. 28, 1999, entitled "Microsensor Housing". U.S.Provisional patent application Ser. No. 60/137,464, filed Jun. 4, 1999, entitled "Self-Calibrating Flow Sensor". Oudheusden Van B.W. et al., "High-sensitivity 2-D Flow Sensor with an Etched Thermal Isolation Structure," Elsevier Sequoia, vol. A21 -A23, (1990). No month. PCT Notification of Transmittal of The International Search Report Or The Declaration, PCT/US01/27041, from the International Searching Authority, Apr. 10, 2002.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (6)
Coleman, Clarence B., Bulk material container with a rigid follower.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.