Apparatus and method for controlling operation of vehicles or machinery by intoxicated or impaired individuals

• US 8,095,193 B2
• Filed: 03/30/2006
• Issued: 01/10/2012
• Est. Priority Date: 04/11/2001
• Status: Active Grant

• Current Assignee: Rockley Photonics Limited
• Original Assignee: TruTouch Technologies, Inc.
• Inventors: Ridder, Trent, ver Steeg, Ben, McNally, James
• Primary Examiner(s): WINAKUR, ERIC FRANK
• Application Number:
  US11/393,341
• Publication Number:
  US 20060173256A1
• Time in Patent Office: 2,112 Days
• Field of Search: 600/310, 600/322, 340/573.1, 340/576, 340/5.82
• US Class Current: 600/310
• CPC Class Codes: A61B 5/0059 using light, e.g. diagnosis by transillumination, diascopy, fluorescence A61B5/0093, A61B5/1455, A61B5/02416 and A61B5/0261 take precedence
• CPC Class Codes: A61B 5/0071 by measuring fluorescence emission
• CPC Class Codes: A61B 5/0075 by spectroscopy, i.e. measuring spectra, e.g. Raman spectroscopy, infrared absorption spectroscopy A61B5/0071 takes precedence
• CPC Class Codes: A61B 5/0088 for oral or dental tissue
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/14546 for measuring analytes not otherwise provided for, e.g. ions, cytochromes
• CPC Class Codes: A61B 5/7264 Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems neural networks per se G06N3/00; expert systems per se G06N5/00
• CPC Class Codes: G01J 3/02 Details
• CPC Class Codes: G01J 3/0218 using optical fibers
• CPC Class Codes: G01J 3/0291 Housings; Spectrometer accessories; Spatial arrangement of elements, e.g. folded path arrangements
• CPC Class Codes: G01N 21/274 Calibration, base line adjustment, drift correction
• CPC Class Codes: G01N 21/35 using infrared light G01N21/39 takes precedence
• CPC Class Codes: G01N 21/359 using near infrared light
• CPC Class Codes: G01N 21/474 Details of optical heads therefor, e.g. using optical fibres
• CPC Class Codes: G01N 2201/129 Using chemometrical methods

Abstract

The present invention relates generally to non-invasive methods and apparatuses for determining analyte properties of a subject and identity characteristics of a subject. Embodiments of the present invention provide analyte property determination and identity determination or verification from the same spectroscopic information, making unauthorized use or misleading results less likely that in systems that include separate analyte and identity determinations. The invention can be used to prevent operation of automobiles or other equipment unless the operator has an acceptable alcohol concentration, and to limit operation of automobiles or other equipment to authorized individuals who are not intoxicated or drug-impaired.

Claims

1. A method of controlling the operation of equipment, comprising:

a) Collecting spectral information representative of the interaction of a subject'"'"'s tissue with incident radiation;

b) Determining from the spectral information as collected in step a) an analyte property;

c) Determining from the spectral information as collected in step a) an identity characteristic;

d) Determining an equipment operation parameter from the analyte property and the identity characteristic;

e) Controlling the operation of the equipment according to the equipment operation parameter.

2. A method as in claim 1, wherein collecting spectral information representative of the interaction of a subject'"'"'s tissue with incident radiation comprises:

a) directing incident radiation comprising radiation at one or more wavelengths to the tissue;

b) collecting radiation communicated from the tissue after interaction of the tissue with the incident radiation;

c) determining the magnitude of the collected radiation at one or more wavelengths.

3. A method as in claim 1, wherein collecting spectral information representative of the interaction of a subject'"'"'s tissue with incident radiation comprises determining the response of the tissue using infrared spectroscopy, near-infrared spectroscopy, Raman spectroscopy, visible spectroscopy, fluorescence spectroscopy, or a combination thereof.

4. A method as in claim 1, wherein collecting spectral information representative of the interaction of a subject'"'"'s tissue with incident radiation comprises determining the tissue'"'"'s response to incident radiation using a dispersive spectrometer, interferometric/modulating spectrometer, or a combination thereof.

5. A method as in claim 1, wherein determining from the spectral information an analyte property comprises determining the presence, concentration, rate of change of concentration, direction of change of concentration, or a combination thereof, of alcohol using multivariate analysis.

6. A method as in claim 1, wherein determining from the spectral information an analyte property comprises determining the presence, concentration, rate of change of concentration, direction of change of concentration, or a combination thereof, of a substance of abuse using multivariate analysis.

7. A method as in claim 6, wherein determining from the spectral information an analyte property further comprises determining the presence, concentration, rate of change of concentration, direction of change of concentration, or a combination thereof, of alcohol using multivariate analysis.

8. A method as in claim 1, wherein determining from the spectral information an identity characteristic of the subject comprises analyzing the spectral information using a neural network, K-nearest neighbors, discriminant analysis, classification analysis, principal components analysis, or a combination thereof.

9. A method as in claim 1, wherein determining from the spectral information an identity characteristic of the subject comprises determining whether the subject is a member of a group of two or more individuals authorized to operate the equipment.

10. A method as in claim 9, wherein determining from the spectral information an identity characteristic of the subject comprises determining the specific individual in the group that matches the subject.

11. A method as in claim 1, further comprising accepting an asserted identification, and wherein determining an identity characteristic comprises determining whether the spectral information indicates that the subject identification matches the asserted identification.

12. A method as in claim 1, further comprising storing a representation of the tissue response of a first subject, and, when the identity characteristic indicates that the current subject is the first subject, then determining the analyte property from the spectral information and from the stored representation.

13. A method as in claim 12, further comprising modifying the stored representation based on the spectral information.

14. A method as in claim 1, wherein determining an equipment operation parameter and controlling the operation of the equipment according to the parameter comprises preventing an engine of the equipment from operating unless both (a) the analyte property indicates that the presence or concentration of a selected analyte has a value defined as acceptable for operation of the equipment and (b) the identity characteristic indicates that the subject is a member of a group of two or more individuals authorized to operate the equipment.

15. A method as in claim 1, wherein determining an equipment operation parameter and controlling the operation of the equipment according to the parameter comprises preventing a transmission of the equipment from engaging an engine of the equipment to move the equipment unless both (a) the analyte property indicates that the presence or concentration of a selected analyte has a value defined as acceptable for operation of the equipment and (b) the identity characteristic indicates that the subject is a member of a group of one or more individuals authorized to operate the equipment.

16. A method of claim 1, wherein the equipment is an automobile, the analyte property is the concentration of alcohol in the subject, the identity characteristic is a determination of whether the subject is a member of an authorized driver group, and operation of the equipment according to the equipment operating parameter comprises preventing the car from being driven unless (a) the alcohol concentration is below a threshold, and (b) the subject is a member of the authorized driver group.

17. A method according to claim 1, wherein controlling the operation of the equipment comprises at least one of:

control operation of an ignition system associated with an engine of the equipment, control operation of a transmission system associated with the equipment, control operation of a steering system associated with the equipment, control operation of an electrical system associated with the equipment, control operation of a braking system associated with the equipment, control operation of a reporting system associated with the equipment, control operation of a recording system associated with the equipment, control operation of accessories associated with the equipment, control operation of a control computer associated with the equipment.

18. A method as in claim 1, further comprising communicating, substantially contemporaneously with determination of the equipment operation parameter, to a receiver located a distance from the equipment one or more of:

(1) the analyte property;

(2) the identity characteristic;

(3) information determined from the analyte property, the identity characteristic, or both;

or (4) a combination thereof.

19. A method as in claim 1, wherein determining an equipment operation parameter from the analyte property and the identity characteristic comprises determining an equipment operation parameter from the analyte property and the identity characteristic and a stored user access profile.

20. A method as in claim 19, wherein the stored user access profile is accessed from a device transportable by a user.

21. An apparatus for the control of the operation of equipment, comprising:

a) A spectroscopic measurement system, adapted to determine a spectral response of a subject'"'"'s tissue to incident radiation;

b) An analysis system, adapted to determine an analyte property responsive to the spectral response and an identification characteristic responsive to the same spectral response from the spectroscopic measurement system;

c) An equipment control system, adapted to control the operation of the equipment responsive to information from the analysis system.

22. An apparatus as in claim 21, wherein the spectral measurement system comprises:

a) An illumination system adapted to direct incident radiation comprising radiation at one or more wavelengths to the tissue;

b) A collection system adapted to collect radiation communicated from the tissue after interaction of the tissue with the incident radiation;

c) A detector adapted to determine the magnitude of the collected radiation at one or more wavelengths.

23. An apparatus as in claim 21, wherein the spectroscopic measurement system comprises an infrared spectrometer, a near-infrared spectrometer, a visible spectrometer, a Raman spectrometer, a fluorescence spectrometer, or a combination thereof.

24. An apparatus as in claim 21, wherein the spectral measurement system comprises a dispersive spectrometer, interferometric/modulating spectrometer, or a combination thereof.

25. An apparatus as in claim 21, wherein the analysis system is adapted to determine the presence, concentration, rate of change of concentration, direction of change of concentration, or a combination thereof, of alcohol using multivariate analysis.

26. An apparatus as in claim 21, wherein the analysis system is adapted to determine the presence, concentration, rate of change of concentration, direction of change of concentration, or a combination thereof, of a drug of abuse using multivariate analysis.

27. An apparatus as in claim 26, wherein the analysis system is further adapted to determine the presence, concentration, rate of change of concentration, direction of change of concentration, or a combination thereof, of alcohol using multivariate analysis.

28. An apparatus as in claim 21, wherein the analysis system is adapted to analyze the spectral information using a neural network, K-nearest neighbors, discriminant analysis, classification analysis, principal components analysis, or a combination thereof, to determine an identity characteristic of the subject.

29. An apparatus as in claim 21, wherein the analysis system is adapted to determine whether the subject is a member of a group of two or more individuals authorized to operate the equipment.

30. An apparatus as in claim 29, wherein the analysis system is adapted to determine the specific individual in the group that matches the subject.

31. An apparatus as in claim 21, wherein the equipment control system is adapted to prevent an engine of the equipment from operating unless both (a) the analyte property indicates that the presence or concentration of a selected analyte has a value defined as acceptable for operation of the equipment and (b) the identity characteristic indicates that the subject is a member of a group of two or more individuals authorized to operate the equipment.

32. An apparatus as in claim 21, wherein the equipment control system is adapted to prevent a transmission of the equipment from engaging an engine of the equipment to move the equipment unless both (a) the analyte property indicates that the presence or concentration of a selected analyte has a value defined as acceptable for operation of the equipment and (b) the identity characteristic indicates that the subject is a member of a group of one or more individuals authorized to operate the equipment.

33. An apparatus as in claim 21, wherein the equipment is an automobile, the analyte property is the concentration of alcohol in the subject, the identity characteristic is a determination of whether the subject is a member of an authorized driver group, and the equipment control system comprises an interlock to preventing the car from being driven unless (a) the alcohol concentration is below a threshold, and (b) the subject is a member of the authorized driver group.

34. An apparatus as in claim 21, wherein the analysis system:

a) stores a representation of the tissue'"'"'s response for a first subject, and, when an unknown subject is presented to the system, the analysis system determines whether the unknown subject'"'"'s tissue response indicates that the unknown subject is the same as the first subject, and

b) determines an analyte property from the information from the spectral measurement system and from the stored representation.

35. An apparatus as in claim 34, wherein the analysis system modifies the stored representation using information from the spectral measurement system when the analysis system determines that the unknown subject is the same as the first subject.

36. An apparatus as in claim 21, further comprising an identity input system for receiving an asserted identity, and wherein the analysis system determines whether the information from the spectroscopic system, compared with information determined from the asserted identity, indicates that the asserted identity is the actual identity.

37. An apparatus as in claim 21, further comprising an identity input system for receiving an asserted identity, and wherein the analysis system stores a representation of the tissue response of a first subject, and, when an unknown subject is presented to the system and indicates an asserted identity, the analysis system determines whether the unknown subject'"'"'s tissue response matches the stored representation, and, if so, then indicating that the unknown subject is the first subject.

38. An apparatus as in claim 37, wherein the analysis system stores a representation of the tissue response of each of a plurality of subjects.

39. An apparatus according to claim 21, wherein the equipment control system is adapted to perform at least one of:

control operation of an ignition system associated with an engine of the equipment, control operation of a transmission system associated with the equipment, control operation of a steering system associated with the equipment, control operation of an electrical system associated with the equipment, control operation of a braking system associated with the equipment, control operation of a reporting system associated with the equipment, control operation of a recording system associated with the equipment, control operation of accessories associated with the equipment, control operation of a control computer associated with the equipment.

40. An apparatus as in claim 21, further comprising a communication system adapted to communicate, substantially contemporaneously with a determination from the analysis system, information from the spectroscopic measurement system, the analysis system, or both, to a receiver located a distance from the equipment.

41. An apparatus as in claim 21, further comprising a user profile reader adapted to access a user profile stored in a storage unit separable from the equipment, and wherein the equipment control system is further responsive to the user profile reader.

42. An apparatus as in claim 41, wherein the storage unit is transportable by a user.

43. An apparatus to control operation of a vehicle, comprising:

a) An illumination system, providing radiation at one or more wavelengths;

b) A sampling system, receiving radiation from the illumination system and communicating radiation to tissue of a subject;

c) A spectrometer system, receiving radiation from the tissue after interaction of the tissue with radiation from the sampling system and generating a signal representative of the tissue'"'"'s interaction with radiation;

d) A data acquisition system, generating spectroscopic data responsive to the signal from the spectrometer system;

e) An analysis system, determining an analyte property of the tissue responsive to the spectroscopic data and an identity characteristic of the subject responsive to the same spectroscopic data from the data acquisition system; and

f) An interlock system, controlling operation of the vehicle responsive to the analyte property and the identity characteristic.

44. An apparatus as in claim 43, wherein

a) The analysis system comprises a model relating spectroscopic information to analyte property;

b) The analysis system comprises a representation of spectroscopic information corresponding to one or more authorized users;

c) The analysis system determines the analyte property from the model and the spectroscopic data from the data acquisition system; and

d) The analysis system determines the identity characteristic from the representation and the spectroscopic data from the data acquisition system.

45. An apparatus as in claim 43, further comprising a communication system adapted to communicate, substantially contemporaneously with a determination from the analysis system, information from the data acquisition system, the analysis system, or both, to a receiver located a distance from the equipment.

46. An apparatus as in claim 43, further comprising a user profile reader adapted to access a user profile stored in a storage unit separable from the equipment, and wherein the interlock system is further responsive to the user profile reader.

47. An apparatus as in claim 43, wherein the storage unit is transportable by a user.