[특허]Ultrasonic volume-sensing transducer instrument with concave transceiver element

Ultrasonic volume-sensing transducer instrument with concave transceiver element 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01F-023/296
출원번호	US-0793647 (2015-07-07)
등록번호	US-10072963 (2018-09-11)
발명자 / 주소	Solokhin, Nick V. Hess, William M. Lechman, Brian J. Drynkin, Alexander V. Miller, David B.
출원인 / 주소	Solokhin, Nick V.
대리인 / 주소	Peterson, Richard Esty
인용정보	피인용 횟수 : 0 인용 특허 : 40

초록 ▼

A liquid-level sensing instrument for determining the level of a liquid in a container or vessel such as a laboratory tube in a rack or a well in a well plate with the container having an acoustically transparent top opening to direct ultrasonic signals to the liquid surface and receive reflected signals where the transceiver sensor instrument is constructed with a piezoelectric focusing sensor that has a concave focusing surface for focusing ultrasonic signals through the opening to the liquid surface in a selected container particularly a container in a group of containers and receiving reflected signals for processing.

대표청구항 ▼

1. In a system that determines the level of a liquid in a container having a top opening exposed to air, the container being adapted to hold a liquid with a liquid surface, a liquid-level sensing instrument comprising: a tubular casing with a sensor end having an opening and a terminal end,an ultrasonic sensor assembly having a single piezoelectric focusing sensor that is mounted at the sensor end of the casing, wherein the focusing sensor is a transceiver element that has a concave focusing surface located at the opening of the sensor end of the casing, and focused at the top opening of the container when located over the container, wherein the casing is an outer housing and the liquid-level sensing instrument has an inner housing displaced from the outer housing with an acoustic and vibration isolation material between the outer housing and inner housing that provides acoustic and vibration isolation to the ultrasonic sensor assembly, and wherein the focusing sensor has a back surface opposite the focusing surface and the ultrasonic sensor assembly has a mass backing against the back surface of the focusing sensor, the mass backing damping unwanted ultrasonic waves directed toward the terminal end of the casing,an electronic connector assembly mounted at the terminal end of the casing,an external signal processor that processes electrical signals to and from the piezoelectric focusing sensor, and,an electrical cable electronically connected to the piezoelectric focusing sensor, wherein the electrical cable passes through the electronic connector assembly and electronically connects the piezoelectric focusing sensor to the external signal processor. 2. The liquid-level sensing instrument of claim 1 wherein the inner housing is arranged around the ultrasonic sensor assembly and the material between the outer housing and the inner housing is a foamed rubber. 3. The liquid-level sensing instrument of claim 1 wherein the casing is the outer housing and the inner housing is concentric with the outer housing. 4. The liquid-level sensing instrument of claim 3 wherein the acoustic and vibration isolation material between the outer housing and the inner housing is a foamed-rubber band. 5. The liquid-level sensing instrument of claim 1 wherein the piezoelectric focusing sensor mounted at the sensor end of the casing has a back surface opposite the focusing surface that is convex. 6. The liquid-level sensing instrument of claim 5 wherein the ultrasonic sensor assembly has a mass backing against the convex back surface of the focusing sensor conforming to the convex back surface of the focusing sensor, the mass backing damping unwanted ultrasonic waves directed toward the terminal end of the casing. 7. The liquid-level sensing instrument of claim 6 wherein the concave focusing surface of the focusing sensor has a curvature and the convex back surface of the focusing sensor has a curvature that is the same as the curvature of the focusing surface of the focusing sensor. 8. The liquid-level sensing instrument of claim 6 wherein the concave focusing surface of the focusing sensor has a curvature and the convex back surface of the focusing sensor has a curvature that is concentric with the curvature of the focusing surface of the focusing sensor. 9. The liquid-level sensing instrument of claim 8 wherein the focusing sensor has a beveled edge and wherein the curvature of the concave focusing surface, the curvature of the convex back surface and the beveled edge have a common focal point. 10. The liquid-level sensing instrument of claim 1 wherein the piezoelectric focusing sensor mounted at the sensor end of the casing has a back surface opposite the focusing surface that is flat. 11. The liquid-level sensing instrument of claim 10 wherein the ultrasonic sensor assembly has a mass backing against the flat back surface of the focusing sensor conforming to the flat back surface of the focusing sensor, the mass backing damping unwanted ultrasonic waves directed toward the terminal end of the casing. 12. The liquid-level sensing instrument of claim 1 wherein the ultrasonic sensor assembly has an epoxy end plug against the mass backing to seal the focusing sensor and the mass backing to the inner housing. 13. The liquid-level sensing instrument of claim 1 wherein the concave focusing surface of the piezoelectric focusing sensor has a silicon rubber frontal layer. 14. The liquid-level sensing instrument of claim 1 further comprising an inductor having two lead wires wherein the electrical cable has a potential conductor connected to one lead wire of the inductor and the focusing sensor has a strip potential wire connected to the other lead wire of the inductor. 15. The liquid-level sensing instrument of claim 1 in combination with a robotic transport mechanism, the level-sensing instrument being mounted to a moveable carriage member that automatically positions piezoelectric focusing sensor over a select container during operation. 16. In a system that determines the level of a liquid in a container having a top opening exposed to air, the container being adapted to hold a liquid with a liquid surface, a robotic transport mechanism with a liquid-level sensing instrument that is locatable over the container comprising: a tubular casing with a sensor end having an opening and a terminal end,an ultrasonic sensor assembly having a single piezoelectric focusing sensor that is mounted at the sensor end of the casing, wherein the focusing sensor is a transceiver element that has a concave focusing surface located at the opening of the sensor end of the casing and focused at the top opening of the container when located over the container, wherein the casing is an outer housing and the liquid-level sensing instrument has an inner housing displaced from the outer housing with an acoustic and vibration isolation material between the outer housing and inner housing that provides acoustic and vibration isolation to the ultrasonic sensor assembly, and wherein the focusing sensor has a back surface opposite the focusing surface and the ultrasonic sensor assembly has a mass backing against the back surface of the focusing sensor, the mass backing damping unwanted ultrasonic waves directed toward the terminal end of the casing,an electronic connector assembly mounted at the terminal end of the casing,an external signal processor that processes electrical signals to and from the piezoelectric focusing sensor, and,an electrical cable electronically connected to the piezoelectric focusing sensor, wherein the electrical cable passes through the electronic connector assembly and electronically connects the piezoelectric focusing sensor to the external signal processor.

이 특허에 인용된 특허 (40)

Diaz, Aaron A.; Burghard, Brion J.; Skorpik, James R.; Pappas, Richard A.; Mullen, O. Dennis; Samuel, Todd J.; Reid, Larry D.; Harris, Joe C.; Valencia, Juan D.; Smalley, Jonathan T.; Shepard, Cheste, Acoustic inspection device.
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Van Tuyl,Michael R.; Chiao,James; Herrmann,Michael J.; Rose,Andrew M., Acoustic liquid dispensing apparatus.
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Oliver, Nelson H.; Tasker, Diana M., Composite acoustic absorber for ultrasound transducer backing material.
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Kopel LeRoy (Tempe AZ), Coupling for a focused ultrasonic transducer.
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Flournoy Norman E. (Richmond VA) Morris David A. (Richmond VA), Damping structure for ultrasonic piezoelectric transducer.
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Ziegler Klaus (Furtwangen DEX), Device for detecting the filling level in a container.
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Ziegler Klaus (Furtwangen DEX), Device for detecting the filling level of a liquid in a container.
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Ziegler Klaus (Furtwangen DEX) Liebl Reiner (Schwalbach DEX), Device for determining the fluid level in a container and container having such a device.
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Getman Igor,DEX ; Lopatin Sergej,DEX ; Muller Roland,DEX, Device for monitoring a predetermined level of a liquid in a container.
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Purpura Paul E. ; Waters Ralph ; Landier Olivier,FRX ; Cohen Beri, Dynamic noninvasive detection of analytical container feature using ultrasound.
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Sasaki Souji (Hitachi JPX) Kino Hirotoshi (Hitachi JPX) Musha Yoshinori (Hitachiota JPX) Kubota Jun (Hitachi JPX) Okada Hisao (Hitachi JPX), Fan-shape scanning ultrasonic flaw detecting apparatus.
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Dockendorff, James B.; Downs, Kevin B.; Labarge, Bryan M.; Lewis, George K., Fluid level detector.
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Koski Richard D., Liquid level detection apparatus with flexible outer housing.
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Lynnworth Lawrence C. (Waltham MA), Marginally dispersive ultrasonic waveguides.
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Cannon, Shawn Paul, Method for inspecting down hole drilling systems for flaws using ultrasonics.
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Straub, Jr., Henry Charles; Grewal, Randeep Singh; Allen, Charles Robert, Method of making a transducer having a plastic matching layer.
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Hickling, Robert, Non-contact, focused, ultrasonic probes for vibrometry, gauging, condition monitoring and feedback control of robots.
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Sobue Hideo (Aichi JPX), Piezo-electric level sensor for internal combustion engine.
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Itoh Akio (Nagoya JPX) Sumi Kazunori (Kagamihara JPX) Saitoh Sigeo (Kuwana JPX) Sobue Hideo (Nagoya JPX), Piezoelectric type liquid level sensor and fabricating method thereof.
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Dreyer, Volker; Kuhny, Jutta, Sensor with moisture protection.
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Chubachi Noriyoshi (4-6-203 ; Katahira 1-chome Sendai-shi ; Miyagi 980 JPX), Surface ultrasonic wave interference microscope.
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Caldwell Joseph W. (Danville CA) Slobodnik Mark W. (Martinez CA), Ultrasonic liquid level monitoring system.
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Nakaso Noritaka (Kasukabe JPX) Tsukahara Yusuke (Tokyo JPX) Saito Masao (Tokyo JPX) Ohira Katsumi (Ageo JPX), Ultrasonic micro spectrometer.
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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

Ultrasonic volume-sensing transducer instrument with concave transceiver element 원문보기

초록 ▼

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Ultrasonic volume-sensing transducer instrument with concave transceiver element 원문보기

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연구과제 타임라인

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이 특허에 인용된 특허 (40)

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