Method and apparatus for noninvasively analyzing flowable products

• US 5,922,945 A
• Filed: 04/16/1997
• Issued: 07/13/1999
• Est. Priority Date: 04/16/1997
• Status: Expired due to Fees

• Current Assignee: Abbott Laboratories Incorporated
• Original Assignee: Abbott Laboratories Incorporated
• Inventors: Wang, Jianjun, Allmaras, Brian J., Stokesbury, Elwood L.
• Primary Examiner(s): Brock, Michael
• Assistant Examiner(s): Miller, Rose M.
• Application Number:
  US08/840,781
• Time in Patent Office: 818 Days
• Field of Search: 73/570, 73/579, 73/597, 73/598, 73/599, 73/600, 73/644, 73/19.03, 73/52, 73/61.49, 73/61.75, 73/61.79, 702/140, 702/137, 702/50, 198/348, 198/358, 198/370.01, 198/370.02
• US Class Current: 73/52
• CPC Class Codes: G01N 2291/101 one transducer
• CPC Class Codes: G01N 2291/2695 Bottles, containers
• CPC Class Codes: G01N 29/02 Analysing fluids using acoustic emission techniques G01N29/14 ; constructional or flow details for analysing fluids G01N29/222; optoacoustic fluid cells G01N29/2425
• CPC Class Codes: G01N 29/223 Supports, positioning or alignment in fixed situation mounting transducers per se G10K11/004
• CPC Class Codes: G01N 29/225 Supports, positioning or alignment in moving situation
• CPC Class Codes: G01N 29/28 providing acoustic coupling , e.g. water impedance matching G10K11/02

Abstract

An apparatus for analyzing a liquid product. The apparatus includes a conveyor assembly having a conveyor belt and an agitator. The conveyor belt is constructed to deliver a unit of liquid product from the agitator to an analysis position. The agitator is constructed to impart motion to a unit of liquid product. The apparatus further includes an ultrasound transmissive pad assembly having a pad defining a chamber therein. A liquid acoustical couplant is contained in the chamber. The ultrasound transmissive pad assembly further includes an ultrasonic transducer in ultrasonic contact with the liquid acoustical couplant. The pad is positioned to contact a unit of liquid product at the analysis position. The pad has an upper portion and a lower portion and is orientated such that the upper portion contacts a unit of liquid product delivered to the analysis position before the lower portion contacts the unit of liquid product delivered to the analysis position.

Claims

1. An apparatus for analyzing a flowable product, said apparatus comprising:

a conveyor assembly comprising a conveyor belt and an agitator, said conveyor belt constructed to deliver a container containing flowable product from said agitator to an analysis position, said agitator constructed to impart motion to a flowable product within a container;

an ultrasound transmissive pad assembly defining a chamber therein, a liquid acoustical couplant contained in said chamber, said ultrasound transmissive pad assembly further comprising an ultrasonic transducer in ultrasonic contact with said liquid acoustical couplant, said ultrasound transmissive pad assembly positioned to contact a container containing flowable product in said analysis position, said ultrasound transmissive pad assembly having an upper portion and a lower portion, said ultrasound transmissive pad assembly orientated such that said upper portion contacts a container containing flowable product delivered to said analysis position by said conveyor assembly before said lower portion contacts the container containing flowable product delivered to said analysis position by said conveyor assembly.

2. An apparatus for analyzing a flowable product in accordance with claim 1, wherein said conveyor belt delivers a container containing flowable product from said agitator to said analysis position in a first direction, said apparatus further comprising a first piston positioned proximal said analysis position, said first piston constructed to move a container containing flowable product in said analysis position in a second direction, said second direction being opposite said first direction, said first piston constructed to move a container containing flowable product to a position spaced from said ultrasound transmissive pad assembly.

3. An apparatus for analyzing a flowable product in accordance with claim 1, wherein said apparatus further comprises a second piston positioned proximal said analysis position, said second piston constructed to move a container containing flowable product off of said conveyor belt.

4. An apparatus for analyzing a flowable product, said apparatus comprising:

a conveyor means for delivering a container containing flowable product to an analysis position;

an ultrasound transducer assembly positioned to contact a container containing flowable product at said analysis position, said ultrasound transducer assembly having an upper portion and a lower portion, said ultrasound transducer assembly orientated such that said upper portion contacts a container containing flowable product delivered to said analysis position by said conveyor means before said lower portion contacts the container containing flowable product delivered to said analysis position by said conveyor means.

5. An apparatus for analyzing a flowable product in accordance with claim 4, wherein said conveyor means delivers a container containing flowable product to said analysis position in a first direction, said apparatus further comprising a first container moving means positioned proximal said analysis position, said first container moving means constructed to move a container containing flowable product in said analysis position in a second direction, said second direction being opposite said first direction, said first container moving means constructed to move a container containing flowable product to a position spaced from said ultrasound transducer assembly.

6. An apparatus for analyzing a flowable product in accordance with claim 5, wherein said first container moving means comprises a piston.

7. An apparatus for analyzing a flowable product in accordance with claim 5, wherein said first container moving means comprises a robot.

8. An apparatus for analyzing a flowable product in accordance with claim 4, wherein said conveyor means comprises a conveyor belt.

9. An apparatus for analyzing a flowable product in accordance with claim 4, wherein said conveyor means comprises an agitator.

10. An apparatus for analyzing a flowable product in accordance with claim 4, wherein said conveyor means comprises a robot constructed to transport a container containing flowable product to said analysis position.

11. An apparatus for analyzing a flowable product in accordance with claim 4, wherein said conveyor means comprises a robot constructed to agitate a flowable product in a container.

12. An apparatus for analyzing a flowable product in accordance with claim 4, wherein said apparatus further comprises a second container moving means positioned proximal said analysis position, said second container moving means constructed to move a container containing flowable product out of contact with said conveyor means.

13. An apparatus for analyzing a flowable product in accordance with claim 12, wherein said second container moving means comprises a piston.

14. An apparatus for analyzing a flowable product in accordance with claim 12, wherein said second container moving means comprises a robot.

15. An apparatus for analyzing a flowable product in accordance with claim 4, said apparatus further comprising a processing unit coupled to said ultrasound transducer assembly, said processing unit constructed to analyze ultrasonic wave patterns received by said ultrasound transducer assembly from a container containing flowable liquid.

16. A method for analyzing a flowable product, said method comprising the steps of:

providing a container containing flowable product;

providing an agitator for agitating said container containing flowable product;

providing a conveyor assembly for conveying said container containing flowable product from said agitator to an analysis position;

providing an ultrasound transmissive pad assembly comprising a pad defining a chamber therein and further comprising an ultrasound transducer, a liquid acoustical couplant contained in said chamber defined by said pad, said ultrasound transducer being in ultrasonic contact with said liquid acoustical couplant, said pad having an upper portion and a lower portion;

positioning said ultrasound transmissive pad assembly proximal said analysis position such that said pad is in physical contact with said container containing flowable product when said unit of said container containing flowable product is in said analysis position, said ultrasound transmissive pad assembly positioned such that said upper portion of said pad contacts said unit of liquid product before said lower portion of said pad contacts said unit of liquid product;

providing a processing unit for analyzing ultrasound wave patterns received by said ultrasound transmissive pad assembly;

placing said container containing flowable product in said agitator;

agitating said container containing flowable product using said agitator;

delivering said container containing flowable product from said agitator to said analysis position using said conveyor assembly;

ultrasonically analyzing said container containing flowable product using said ultrasound transmissive pad assembly; and

analyzing an ultrasound wave pattern received by said ultrasound transmissive pad assembly using said processing unit.

17. A method in accordance with claim 16, wherein said method further includes the steps of:

providing a first piston constructed to move said container containing flowable product in said analysis position away from said ultrasound transmissive pad assembly;

providing a second piston constructed to move said container containing flowable product off of said conveyor assembly;

placing said first and second pistons in positions proximal said analysis position;

activating said first piston after ultrasonically analyzing said unit of liquid product using said ultrasound transmissive pad assembly, whereby said unit of liquid product is moved away from said ultrasound transmissive pad assembly; and

activating said second piston after said first piston has been activated, whereby said unit of liquid product is moved off of said conveyor assembly by said second piston assembly.