Real-time monitoring and control of physical and arousal status of individual organisms

• US 10,076,273 B2
• Filed: 07/06/2007
• Issued: 09/18/2018
• Est. Priority Date: 07/06/2006
• Status: Active Grant

• Current Assignee: BioRICS NV
• Original Assignee: BioRICS NV
• Inventors: Berckmans, Daniel, Quanten, Stijn, Aerts, Jean-Marie
• Primary Examiner(s): HARWARD, SOREN T
• Application Number:
  US12/307,602
• Publication Number:
  US 20090312998A1
• Time in Patent Office: 4,092 Days
• Field of Search: None
• CPC Class Codes: A61B 5/024 Detecting, measuring or recording pulse rate or heart rate A61B5/0205, A61B5/021 take precedence
• CPC Class Codes: A61B 5/1118 Determining activity level
• CPC Class Codes: A61B 5/165 Evaluating the state of mind, e.g. depression, anxiety
• CPC Class Codes: G16H 20/30 relating to physical therapies or activities, e.g. physiotherapy, acupressure or exercising
• CPC Class Codes: G16H 20/40 relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture
• CPC Class Codes: G16H 50/50 for simulation or modelling of medical disorders

Abstract

The present invention relates to methods and systems for monitoring and controlling the status of humans or animals, in particular relating to both the physical and the arousal status of an individual human or animal. These methods and systems rely on a dynamic and adaptive data-based on-line modelling technique wherein information on bioprocess inputs and outputs is measured in real-time and the model predicts an output based on the bioprocess input. The provided methods are particularly useful to monitor and/or control processes in which performance is important.

Claims

1. A method of monitoring an estimation of an arousal component of a heart rate (HR_PhAr) of an individual human or animal on the basis of a model capable of integrating measured, real-time information on one or more bioprocess inputs and one or more bioprocess outputs and linking the information to the estimation of the arousal component of the heart rate of the individual human or animal (HR_PhAr), the heart rate having a physical component (HR_phys) and the arousal component (HR_PhAr), the method being executed in a computer under the control of a program stored in the computer and comprising:

using at least one sensor for measuring real-time information on bioprocess inputs and/or bioprocess outputs,

generating the model on-line,

inputting, to the model, the real-time information on bioprocesses of the human or animal,

generating, responsive to the input real-time information, model outputs using a dynamic and adaptive data-based on-line modelling technique, wherein at least one of the bioprocess inputs or outputs used as model input is a metabolism-related variable relating to the metabolic energy and/or mobilized energy of the human or animal, which is a measurable factor affecting the bioprocess, and at least one of the model outputs is an estimated component of the heart rate (HR_mech) based on at least the one metabolism-related variable relating to the metabolic energy and/or mobilized energy, and wherein the model is updated on-line by adapting parameters of the model in real-time based on estimating and predicting the model outputs and comparing the model outputs in real-time with measured bioprocess outputs,

measuring in real-time the measured heart rate of the individual human or animal (HR_tot),

outputting information about the measured heart rate (HR_tot) to an output component, and

using the information about the heart rate (HR_tot) to control said physical component (HR_phys) or said arousal component (HR_PhAr), by adapting at least one of the bioprocess inputs and/or an environmental variable changing a relationship between the bioprocess input and the bioprocess output,

determining a value for an unknown variable attributed to the estimation of the arousal component (HR_PhAr) from a set of equations, wherein at least the heart rate (HR_tot) and the estimated component of the heart rate (HR_mech) are known variables, and

using the value of the unknown variable to monitor and/or control the arousal component of the heart rate (HR_PhAr),

wherein a component of the heart rate relating to basal metabolism (HR_bmr) and a component of the heart rate relating to heat balance (HR_heat) are additional known variables in the set of equations,

wherein the estimation of the arousal component (HR_PhAr) is determined by subtracting in real-time (a) the component of the heart rate relating to basal metabolism (HR_bmr) and the component of the heart rate relating to heat balance (HR_heat) from (b) the difference between the real-time measured heart rate (HR_tot) and a mechanical activity component, the mechanical activity component being the estimated component of the heart rate (HR_mech),

wherein the resulting difference between (b) and (a) is the value of the unknown variable attributed to the estimation of the arousal component (HR_PhAr),

wherein generating the model on-line includes expressing the real-time measured heart rate as

2. The method according to claim 1, further comprising the steps of:

using the value of the unknown variable as a model input in an additional model or algorithm for monitoring or controlling purposes, and

generating a second unknown variable, and using the second unknown variable as additional model input in the additional model or algorithm for monitoring or controlling purposes.

3. The method according to claim 2, wherein the model output of the additional model or algorithm is used for the continuous detection of normal to excessive sleepiness in an active subject (NESAS).

4. The method according to claim 1, wherein the value of the unknown variable is determined over time, resulting in dynamics of the unknown variable, and the value of the unknown variable is classified as containing arousal events or not, depending on the dynamics of the unknown variable.

5. The method according to claim 4, wherein the arousal events are further classified as contributing to positive, neutral or negative arousal depending on the dynamics of the unknown variable.

6. The method according to claim 1, further comprising the step of using the estimated component of the heart rate to monitor and/or control the physical component of the heart rate.

7. The method according to claim 6, further comprising taking into account, in addition to the estimated component of the heart rate based on the at least one metabolism related variable, the component of the heart rate relating to basal metabolism and the component of the heart rate relating to heat balance, to monitor and/or control the physical component of the heart rate.

8. The method according to claim 6, wherein the dynamics of the model parameters modelling the physical status of the individual are used to detect whether the individual has taken or been administered doping.

9. The method according to claim 1, wherein the animal is mammalian or avian or a horse, cow, chicken or a human.

10. The method according to claim 1, wherein the metabolism related variable is selected from training activity, body movement or body part movement, and power production.

11. The method according to claim 1, wherein the model takes into account effects of external disturbances or variables considered as external disturbances to redefine the relation between bioprocess inputs and bioprocess outputs.

12. The method of claim 1, wherein the control of said at least one variable of said physical component or said arousal component increases efficiency of an activity of said human or animal.

13. The method of claim 12, wherein said activity is training activity, body movement or body part movement, or power production.

14. The method of claim 13, wherein said training activity is athletic training.

15. The method of claim 1, wherein the output component is a display, an alarm device, and/or a machine used by the human or animal.

16. The method according to claim 1, wherein physical related model parameters concerning the mechanical activity component, being the estimated component of the heart rate, are estimated on a clear physical effort when a physical heart rate response is dominant, and wherein the unknown variable is determined and attributed to the arousal component of the heart rate while the physical related model parameters are kept constant.

17. The method according to claim 1, further comprising the step of using the value of the unknown variable as a model input in an additional model or algorithm for monitoring or controlling purposes.

18. The method according to claim 1, further comprising the step of generating a second unknown variable, and using the second unknown variable as additional model input in the additional model or algorithm for monitoring or controlling purposes.

19. The method according to claim 1, further comprising the step of classifying the measured heart rate, being the bioprocess output, as containing arousal events when dynamics is detected in the measured heart rate without a corresponding dynamics in the metabolism-related variable relating to the metabolic energy and/or mobilized energy of the human or animal, being the bioprocess input.

20. A system for monitoring an estimation of an arousal component of a heart rate of an active individual human or animal (HR_PhAr), the heart rate (HR_tot) having a physical (HR_phys) and the arousal component (HR_PhAr), comprising

(a) at least one sensor for measuring real-time information regarding bioprocess inputs and bioprocess outputs, wherein at least one of the bioprocess inputs or outputs is a variable relating to the metabolic energy and/or mobilized energy of the human or animal, which is a measurable factor affecting the bioprocess;

(b) measured real-time information;

(c) a first processor connected to communicate with the first device for on-line modelling and generating an estimated component of the heart rate of the human or animal (HR_mech), based on at least the variable relating to the metabolic energy and/or mobilized energy, said first processor further configured and operable to on-line adapt model parameters in real-time, based on estimating and predicting model outputs and comparing the predicted model outputs in real-time with the measured bioprocess outputs; and

an output component operably coupled to the first device, that prompts a change in a status of the human or animal by adapting at least one of the bioprocess inputs and/or an environmental variable changing a relationship between the bioprocess input and the bioprocess output, wherein the estimation of the arousal component (HR_PhAh) is determined by subtracting (i) a component of the heart rate relating to basal metabolism (HR_bmr) and a component of the heart rate relating to heat balance (HR_heat) from (ii) the difference between the heart rate (HR_tot) and a mechanical activity component, the mechanical activity component being the estimated component of the heart rate (HR_mech), wherein the resulting difference between (ii) and (i) is the estimation of the arousal component (HR_PhAr),

wherein the first device and the first processor are adapted to use a model in which the real-time measured heart rate (HR_tot) is expressed as

21. The system of claim 20, further comprising:

(d) a second processor configured and operable to communicate with the first device for on-line modelling and generating the value of an unknown variable from a set of equations wherein the measured heart rate (HR_tot) and the estimated component of the heart rate (HR_mech) 1 are known variables.

22. The system of claim 21 for controlling the heart rate, further comprising:

(e) a first computational module for comparing and determining a variance between the estimated component of the heart rate (HR_mech) land a preset reference physical component of the heart rate;

(f) a second computational module for comparing and determining a variance between the generated value of the unknown variable and a preset reference arousal component;

(g) controller to determine how one or more bioprocess inputs should be adjusted in relationship to the variance determined by at least one of the first and second computational modules.

23. The system of claim 21, further comprising a computational module for on-line modelling and predicting a bio response based on the input of at least the value of the unknown variable.

24. The system according to claim 21, wherein the second processor is configured and operable to use the value of an unknown variable to monitor and/or control the arousal component of the heart rate, wherein a component of the heart rate relating to basal metabolism and a component of the heart rate relating to heat balance are additional known variables in the set of equations.

25. The system of claim 20, wherein the variable relating to the metabolic energy and/or mobilized energy the metabolism related variable is selected from the group consisting of training activity, body movement or body part movement, and power production.

26. The system of claim 25, wherein said activity is athletic training.

27. The system of claim 20, wherein the control of said at least one variable of said physical component or said arousal component increases efficiency of an activity of said human or animal.

28. The system of claim 20, wherein the first device comprises a sensor or electrode.

29. The system of claim 20, wherein said first device is a personal computer, a PDA, a smart phone, or a global positioning system (GPS) device.

30. The system of claim 20, wherein the first processor is in wired or wireless communication with the first device.

31. The system of claim 20, wherein the output component is a display, an alarm device, or a machine used by human or animal.

32. The system of claim 20, wherein the first processor is configured and operable to:

to estimate physical related model parameters concerning the mechanical activity component, being the estimated component of the heart rate, on a clear physical effort when physical heart rate response is dominant and to determine the unknown variable and attribute it to the arousal component of the heart rate while the physical related model parameters are kept constant.

33. The system of claim 20, wherein the first processor is configured and operable to:

classify the measured heart rate, being the bioprocess output, as containing arousal events when dynamics is detected in the measured heart rate without a corresponding dynamics in the metabolism-related variable relating to the metabolic energy and/or mobilized energy of the human or animal, being the bioprocess input.

34. A computer program product, tangibly embodied in a non-transitory machine-readable medium for execution by a processor, the computer program product being operable to cause data processing for use in a system for monitoring an estimation of an arousal component of heart rate of an individual human or animal, the heart rate (HR_tot) having a physical component (HR_phys) and the arousal component (HR_PhAr),

the computer program comprising software code which when executed on a processing engine having a processor and memory provides:

(a) software code for collecting and storing real-time information on bioprocess inputs and outputs, wherein at least one of the bioprocess inputs is a variable relating to the metabolic energy and/or mobilized energy of the human or animal, which is a measurable factor affecting the bioprocess; and

(b) software code for on-line modelling and generating an estimation of a component of the heart rate of the human or animal (HR_mech), based on the variable relating to the metabolic energy and/or mobilized energy,

the computer program product being adapted to estimate the arousal component (HR_PhAr) by subtracting the estimated component of the heart rate (HR_mech), the component of the heart rate relating to basal metabolism (HR_bmr) and the component of the heart rate relating to heat balance (HR_heat) from the measured heart rate (HR_tot) and the resulting difference is a value of an unknown variable attributed to the arousal component of the heart rate (HR_PhAr)

wherein the computer program further comprises a model in which the real-time measured heart rate (HR_tot) is expressed as