System and method for detecting unusual inactivity of a resident

• US 20060055543A1
• Filed: 09/10/2004
• Published: 03/16/2006
• Est. Priority Date: 09/10/2004
• Status: Abandoned Application

• Current Assignee: General Electric Company, Lexmark International Incorporated (Ninestar Corporation)
• Original Assignee: Lexmark International Incorporated (Ninestar Corporation)
• Inventors: Ganesh, Meena, Cuddihy, Paul Edward, Graichen, Catherine Mary, Rajiv, Vrinda, Weisenberg, Jenny Marie, Kornfein, Mark Mitchell
• Application Number:
  US10/938,004
• Publication Number:
  US 20060055543A1
• Time in Patent Office: Days
• US Class Current: 340/573.100
• CPC Class Codes: G08B 21/0423 detecting deviation from an expected pattern of behaviour or schedule
• CPC Class Codes: G08B 21/0469 Presence detectors to detect unsafe condition, e.g. infrared sensor, microphone G08B21/0476 takes precedence
• CPC Class Codes: G08B 21/0492 Sensor dual technology, i.e. two or more technologies collaborate to extract unsafe condition, e.g. video tracking and RFID tracking

Abstract

A system and method for detecting a period of unusual inactivity of a person is provided. The system comprises a monitoring system, which is in communication with location and motion sensors. The monitoring system comprises a processor-based device programmed to develop a model of the person'"'"'s periods of inactivity within a structure based on data received from the sensors. The processor-based device may also be programmed to determine if a current period of inactivity within the structure is a period of normal inactivity or a period of unusual inactivity based on the model of the person'"'"'s periods of inactivity.

Claims

1. A system for detecting when a person occupying a structure is exhibiting a period of unusual inactivity, comprising:

at least one location sensor operable to detect when the person is located at a specific location within the structure and to provide a signal when the person is located at the specific location;

at least one motion sensor operable to detect activity within the structure and to provide a signal when the at least one motion sensor detects activity within the structure; and

a processor-based system programmed to establish a normal period of inactivity within the structure based on signals received from the at least one location sensor and the at least one motion sensor, and wherein the processor-based system is operable to establish if a current period of inactivity is unusual based on whether the resident is located at the specific location and a comparison of the current period of inactivity with the normal period of inactivity within the structure.

2. The system as recited in claim 1, wherein the processor-based system establishes a first period of time as being a normal period of inactivity based on the person not being located at the specific location.

3. The system as recited in claim 2, wherein the processor-based system establishes a second period of time as being a normal period of inactivity based on the person being located at the specific location.

4. The system as recited in claim 3, wherein the first period of time is shorter than the second period of time.

5. The system as recited in claim 1, wherein the at least one location sensor comprises a pressure pad sensor operable to provide a signal when the person is sitting on the pressure pad sensor.

6. The system as recited in claim 1, wherein the at least one motion sensor comprises a switch configured to provide a signal when a door is one of opened or closed.

7. The system as recited in claim 1, wherein the processor-based system provides a signal to alert a caregiver when an unusual period of inactivity is identified.

8. The system as recited in claim 1, wherein the processor-based system is disposed at a remote location.

9. A system for detecting a period of unusual inactivity of a person, comprising:

a monitoring system in communication with at least one location sensor operable to detect when the person is located at a specific location within a residence and at least one motion sensor operable to detect movement within the residence, wherein the monitoring system comprises a processor-based device programmed to develop a model of the person'"'"'s patterns of activity within the residence based on data received from the at least one location sensor and the at least one motion sensor, and wherein the processor-based device is programmed to determine if a current period of inactivity within the residence is a period of normal inactivity or a period of unusual inactivity based on the model of the person'"'"'s patterns of activity within the residence.

10. The system as recited in claim 9, wherein the at least one location sensor comprises a plurality of location sensors, each of the plurality of location sensors being disposed at a resting place within the residence.

11. The system as recited in claim 9, wherein the at least one motion sensor comprises a plurality of motion sensors dispersed about the residence.

12. The system as recited in claim 9, wherein the model of the person'"'"'s patterns of activity comprises temporal data for each movement within the residence detected by the at least one motion sensor.

13. The system as recited in claim 9, wherein the processor-based device is programmed to determine that the current period of inactivity is a period of normal inactivity when the person is located at the specific location.

14. The system as recited in claim 13, wherein the processor-based device is programmed to determine that the current period of inactivity is a period of unusual inactivity when the person is inactive for a defined period of time established by the model of the person'"'"'s patterns of activity within the residence as being representative of a period of unusual inactivity of the person within the residence.

15. The system as recited in claim 9, wherein the monitoring system is operable to alert a caregiver that the person is experiencing the period of unusual inactivity.

16. A computer program, comprising:

programming instructions stored in a tangible medium, wherein the programming instructions enable a processor-based device to develop a model of a person'"'"'s patterns of activity within a residence based on data received from at least one location sensor and at least one motion sensor, and wherein the programming instructions enable the processor-based device to determine if a current period of inactivity within the residence is a period of normal inactivity or a period of unusual inactivity based on the model of the person'"'"'s patterns of activity.

17. The program as recited in claim 16, comprising programming instructions operable to enable the processor-based device establish a normal period of inactivity within the residence.

18. The program as recited in claim 17, comprising programming instructions operable to enable the processor-based device to produce a signal when the current period of inactivity exceeds the normal period of inactivity.

19. The program as recited in claim 16, comprising programming instructions operable to enable the processor-based device establish a normal time of day that there is activity within the residence.

20. A method for detecting when a resident has fallen down within a structure, comprising:

detecting when the resident is not located at a defined location within the structure;

detecting when the resident is inactive;

establishing a period of inactivity of the resident when the resident is not located at the defined location within the structure and the resident is inactive; and

comparing the period of inactivity of the resident when the resident is not located at the defined location within the structure and the resident is inactive with an adaptive model of the resident'"'"'s normal patterns of activity to determine if the period of inactivity of the resident when the resident is not located at the defined location within the structure is unusual.

21. The method as recited in claim 20, comprising:

establishing a period of the resident being located at the defined location within the structure; and

comparing the period of the resident being located at the defined location within the structure with the adaptive model of the resident'"'"'s normal patterns of activity to determine if the period of the resident being located at the defined location within the structure is unusual.

22. The method as recited in claim 20, comprising developing the adaptive model of the resident'"'"'s normal patterns of activity based on tracking when the resident is located at the defined location within the structure and when the resident is not located at the defined location within the structure.

23. The method as recited in claim 22, wherein developing the adaptive model of the resident'"'"'s normal patterns of activity is based on tracking when the resident is active and when the resident is inactive.

24. The method as recited in claim 23, wherein developing the adaptive model of the resident'"'"'s normal patterns of activity is based on tracking where in the structure the resident is active and where in the structure the resident is inactive.

25. The method as recited in claim 20, comprising:

automatically attempting to contact the resident when the system establishes that the period of inactivity of the resident is unusual; and

attempting to contact a caregiver if the resident does not respond to an attempt to contact the resident.

26. The method as recited in claim 20, comprising automatically attempting to contact a caregiver when the system establishes that the resident is experiencing a period of unusual inactivity.

27. A method of providing assistance to a person in an event of the person becoming incapacitated, comprising:

operating a monitoring system to develop a model of the person'"'"'s patterns of activity and inactivity within a structure using at least one motion sensor operable to detect motion of the person and at least one location sensor operable to detect when the person is located at a specific location within the structure;

operating the monitoring system to monitor the person'"'"'s activity within the structure to identify a period of inactivity within the structure when the person is not located at the specific location as being unusual based on the model of the person'"'"'s patterns of activity and inactivity within a structure; and

at least one of contacting the person and a caregiver when the monitoring system identifies the person as being in a period of unusual inactivity.

28. The method as recited in claim 27, wherein the model of the person'"'"'s patterns of activity and inactivity within the structure is based on data received from the at least one motion sensor and the at least one location sensor.

29. The method as recited in claim 28, wherein the monitoring system is operable to establish a duration of inactivity between each indication of movement detected by the at least one motion sensor and to store each duration of inactivity data in a memory, and wherein the model of the person'"'"'s patterns of activity and inactivity within a structure is based on the duration of inactivity data stored in memory over a period of time.

30. A system for identifying when a person has become unusually inactive, comprising:

at least one location sensor operable to provide a signal representative of the person'"'"'s occupancy of a specific location;

at least one movement sensor operable to provide a signal representative of movement by the person; and

a processor-based device in communication with the at least one location sensor and the at least one movement sensor, wherein the processor-based device is operable to determine if a current period of inactivity is unusual based on the signal representative of the person'"'"'s occupancy of a specific location and the signal representative of movement by the person.

31. The system as recited in claim 30, wherein the processor-based device is programmed to identify the person as having fallen when the at least one location sensor indicates that the person is not occupying the specific location and the current period of inactivity exceeds a first defined period of inactivity.

32. The system as recited in claim 30, wherein the processor-based device recognizes a period of inactivity as being a period of normal inactivity if the person is occupying the specific location for a second defined period of inactivity.

33. The system as recited in claim 32, wherein the processor-based device is programmed to identify the person as having been incapacitated when the at least one location sensor indicates that the person is occupying the specific location and the current period of inactivity exceeds the second defined period of inactivity.

34. The system as recited in claim 30, wherein the at least one location sensor comprises a pressure pad operable to provide a signal when a person is disposed on the pressure pad.

35. A system for detecting when a person is experiencing a period of unusual activity, comprising:

at least one location sensor operable to detect when the person is located at a specific location within a structure and to provide a signal when the person is located at the specific location;

at least one motion sensor operable to detect activity within the structure and to provide a signal when the at least one motion sensor detects activity within the structure; and

a processor-based system programmed to establish a normal period of activity within the structure based on signals received from the at least one location sensor and the at least one motion sensor, and wherein the processor-based system is operable to establish if a current period of activity is unusual based on whether the resident is located at the specific location and a comparison of the current period of activity with the normal period of activity within the structure.

36. The system as recited in claim 35, wherein the system establishes the normal period of activity based on the time of day.

37. The system as recited in claim 36, wherein the system comprises a plurality of motion sensors disposed in different rooms of the structure, and the system establishes the normal period of activity based on activity detected in each of the different rooms of the structure.

38. The system as recited in claim 35, wherein the at least one location sensor comprises a pressure pad sensor operable to provide a signal when the person is sitting on the pressure pad sensor.

39. The system as recited in claim 35, wherein the processor-based system provides a signal to alert a caregiver when an unusual period of activity is identified.

40. The system as recited in claim 35, wherein the processor-based system is disposed at a remote location.