Urine detection system and method

• US 20030060789A1
• Filed: 09/23/2002
• Published: 03/27/2003
• Est. Priority Date: 09/25/2001
• Status: Active Grant

• Current Assignee: Shmuel Shapira
• Original Assignee: Sysmore, Inc.
• Inventors: Shapira, Shmuel, Tsur, Ron A.
• Granted Patent: US 6,916,968 B2
• Time in Patent Office: Days
• US Class Current: 604/361
• CPC Class Codes: A61F 13/42 with wetness indicator or alarm
• CPC Class Codes: A61F 13/84 Accessories, not otherwise provided for, for absorbent pads
• CPC Class Codes: A61F 2013/8488 including testing apparatus
• CPC Class Codes: A61F 2013/8491 including test methods

Abstract

A urine detection system and method. According to one aspect of the invention, the method includes generating a magnetic field within an effective distance of a potentially wetted area, and conducting a plurality of measurements to construct a magnetic energy distribution function corresponding to the potentially wetted area. The method further includes comparing at least one parameter of the magnetic energy distribution function to a set of stored parameters corresponding to known wetness conditions to identify a wetness condition of the potentially wetted area.

Claims

1. A method of detecting urine, comprising:

generating a magnetic field within an effective distance of a potentially wetted area;

conducting a plurality of measurements to construct a magnetic energy distribution function corresponding to the potentially wetted area; and

comparing at least one parameter of the magnetic energy distribution function to a set of stored parameters corresponding to known wetness conditions to identify a wetness condition of the potentially wetted area.

2. The method of claim 1, wherein generating a magnetic field includes driving a signal through an exciter coil.

3. The method of claim 1, wherein the plurality of measurements are correlated in time to different frequencies of the magnetic field.

4. The method of claim 1, wherein the plurality of measurements are correlated in time to the build up and collapse of the magnetic field.

5. A urine detection system, comprising:

an inducer configured to generate a magnetic field within an effective distance of a potentially wetted area;

an energy-converting module configured to conditionally engage in mutual induction with the inducer; and

an analyzing module configured to construct a magnetic energy distribution function that models an energy distribution pattern between the inducer and the energy-converting module, wherein the analyzing module is further configured to apply the magnetic energy distribution function to a set of stored parameters corresponding to known wetness conditions to identify a wetness condition of the potentially wetted area.

6. The urine detection system of claim 5, wherein the energy-converting module is one of a plurality of energy-converting modules, each energy-converting module configured to conditionally engage in mutual induction with the inducer.

7. The urine detection system of claim 6, wherein the plurality of energy-converting modules constitute a urine detection network for detecting relative amounts of urine at a plurality of regions of a urine collection article.

8. The urine detection system of claim 6, wherein the plurality of energy-converting modules are configured as one resonator.

9. The urine detection system of claim 5, wherein the inducer and the energy-converting module are movable relative to one another.

10. The urine detection system of claim 9, wherein the inducer and the energy-converting module are tuned to conditionally resonate with one another.

11. The urine detection system of claim 10, wherein the energy-converting module is insulated from urine.

12. The urine detection system of claim 10, wherein the energy-converting module is configured to lose its ability to enterer a state of resonance when short-circuited by urine.

13. The urine detection system of claim 10, wherein the energy-converting module is configured for selective attachment to a urine collection article.

14. The urine detection system of claim 10, wherein the energy-converting module is incorporated into a urine collection article.

15. The urine detection system of claim 5, wherein the analyzing module is configured to measure an induced signal at the energy-converting module.

16. The urine detection system of claim 15, further comprising a second energy-converting module, wherein the analyzing module is configured to monitor a relative difference in the induced signals at each energy-converting module.

17. The urine detection system of claim 16, wherein the energy-converting modules are spaced in fixed positions on opposite sides of the inducer.

18. The urine detection system of claim 5, wherein the analyzing module compares parameters of the energy distribution function with the stored parameters.

19. The urine detection system of claim 18, wherein the analyzing module includes a processor for executing stored instructions to compare parameters of the energy distribution function with the stored parameters.

20. The urine detection system of claim 5, wherein the analyzing module implements a real-time adaptive monitoring strategy to construct the energy distribution function.

21. The urine detection system of claim 5, wherein the analyzing module includes a memory for storing the parameters corresponding to the known wetness conditions.

22. The urine detection system of claim 5, wherein the energy-converting module includes a coil for conducting an electric current induced by the magnetic field.

23. The urine detection system of claim 5, wherein the energy-converting module includes a mechanical converter for converting energy from the magnetic field to mechanical energy.

24. The urine detection system of claim 5, wherein the analyzing module compares a magnetic energy distribution function constructed during an ascending frequency sweep of the magnetic field with a magnetic energy distribution function constructed during a descending frequency sweep of the magnetic field to identify a hysteretic effect.

25. The urine detection system of claim 5, wherein two or more energy-converting modules are configured to respond differently to the same magnetic field.

26. The urine detection system of claim 5, wherein the analyzing module is configured to extract data embedded in transferred energy.

27. A urine detection system, comprising:

an inducer configured to generate a magnetic field;

a sampling coil configured to convert magnetic energy of the magnetic field into an induced signal;

an analyzing module configured to monitor induced signal behavior at the sampling coil and recognize induced signal behavior that indicates a volume of urine is within an effective distance from the sampling coil.

28. The urine detection system of claim 27, wherein the sampling coil is fixed adjacent the inducer.

29. The urine detection system of claim 27, further comprising a reference coil configured to convert magnetic energy of the magnetic field into an induced signal, wherein the analyzing module is configured to monitor a relative difference in induced signal behavior at the sampling coil compared to the reference coil, and recognize a relative difference that indicates a volume of urine is within an effective distance from the sampling coil.

30. The urine detection system of claim 29, wherein the sampling coil and the reference coil are respectively fixed adjacent opposite sides of the inducer.

31. The urine detection system of claim 27, wherein the analyzing module implements a real-time adaptive monitoring strategy.

32. An excretion retention article, comprising:

an absorbent region for retaining an excretion; and

an energy-converting module configured to conditionally collaborate with an inducer, wherein an energy distribution between the energy-converting module and the inducer is influenced according to an amount of excretion retained by the absorbent region.

33. The excretion retention article of claim 32, wherein the excretion is urine.

34. The excretion retention article of claim 32, wherein the energy-converting module is insulated from the excretion.