INFORMATION MANAGEMENT SYSTEM AND INFORMATION MANAGEMENT SERVER

• US 20080208480A1
• Filed: 12/21/2007
• Published: 08/28/2008
• Est. Priority Date: 02/23/2007
• Status: Abandoned Application

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Yano, Kazuo, Yamashita, Shunzo, KURIYAMA, Hiroyuki
• Application Number:
  US11/962,316
• Publication Number:
  US 20080208480A1
• Time in Patent Office: Days
• US Class Current: 702/19
• CPC Class Codes: G01D 9/005 Solid-state data loggers
• CPC Class Codes: G16H 50/30 for calculating health indices; for individual health risk assessment
• CPC Class Codes: G16H 50/50 for simulation or modelling of medical disorders
• CPC Class Codes: G16Z 99/00 Subject matter not provided for in other main groups of this subclass

Abstract

For the purpose of effectively supervising a user of the health indexes that cannot always be measured, such as the weight and blood pressure, warning and information are provided based on a prediction of the health indexes. In an information management system, in which a first parameter that is not always measured is predicted from a second always measurable parameter.

Claims

1. An information management system predicting a first parameter that is not always measured from a second parameter that is always measurable, comprising:

a first measurement section that measures the first parameter at a first timing;

a second measurement section that measures the second parameter at a second timing;

a data storing section which stores the values of the first measured parameter and the second measured parameter;

a prediction formula generator section which generates a prediction formula for calculating a predicted value of the first parameter at a third timing from the first parameters and the second parameters stored in the data storing section; and

a predicted value calculating section which calculates a predicted value of the first parameter based on the generated prediction formula and the second parameter,

wherein the prediction formula generator section generates the prediction formula at each predetermined timing.

2. The information management system according to claim 1,

wherein the prediction formula generation section, generates the prediction formula at the third timing when the first parameter is newly stored in the data storing section, or the second parameter newly stored in the data storing section;

wherein the predicted value calculating section calculates the predicted value of the second parameter whenever the prediction formula is generated.

3. The information management system according to claim 1, further comprising:

an alarm generating section for generating warning when a predicted value of the second parameter becomes a predetermined threshold value.

4. The information management system according to claim 1,

wherein the prediction formula generator section, generates the prediction formula by learning a change of the second measurement parameter.

5. The information management system according to claim 1,

wherein the second measurement section is worn to a living body and measures a predetermined living body'"'"'s information as the second parameter.

6. The information management system according to claim 5,

wherein the second measurement section, being constituted including an acceleration sensor and measures acceleration as the predetermined living body'"'"'s information.

7. The information management system according to claim 1,

wherein the prediction formula generator section generates a prediction formula by a multiple regression analysis with the first parameter measured at the first timing as a response variable and the second parameter measured at the second timing as a predictor variable.

8. The information management system according to claim 5,

wherein the prediction formula generator section generates a prediction formula by a multiple regression analysis with the first parameter measured at the first timing as a response variable and the second parameter, an acceleration, measured at the second timing as a predictor variable.

9. The information management system according to claim 8,

wherein the prediction formula generation section comprises:

a scalar quantity calculation section that calculates a scalar quantity of the acceleration;

a zero crossing count calculation section that calculates the number of times the magnitude of acceleration crosses 0 or a predetermined value near zero, hereinafter referred to as the number of times of the zero crossing; and

a frequency calculating section that calculates the frequency of appearance of the number of times of the zero crossing within a prescribed period,

wherein the frequency of appearance is specified as an predictor variable.

10. The information management system according to claim 9,

wherein the prediction formula generation section further comprises:

a continuation index calculating section for calculating a continuation index defined as the number of continued time intervals divided by the total number of intervals with the same zero crossing frequency, and

wherein the frequency of appearance of the zero crossing within a prescribed period and the continuation index are specified as predictor variables.

19. The information management system according to claim 1,

wherein the first timing is discrete measurement interval, whereas the second timing is continuous enabling a continuous monitoring for a variation of living body.

20. The information management system according to claim 1,

wherein the second measurement section is constitute of a portable device.

11. An information management server comprising:

a communication section for receiving the first parameter that is not always measured and the second parameter always measured;

the data storing section storing the first parameter and the second parameter;

the prediction formula generator section for generating a prediction formula for calculating the predicted value of the first parameter from the first parameter and the second parameter stored in the data storing section in the information management server which calculates the predicted value of the first parameter from the measured first parameter and the measured second parameter; and

a predicted value calculating section for generating the prediction formula to calculate a predicted value of the first parameter based on the generated prediction formula and the second measured parameter, wherein the prediction formula generator section generates the prediction formula at every predetermined timing.

12. The information management server according to claim 11,

wherein the information management server generates the prediction formula when the first parameter is newly stored in the data storing section, or when the second parameter is newly stored in the data storing section, the predicted value calculating section calculates a predicted value of the second parameter whenever the prediction formula is generated.

13. The information management server according to claim 11, further comprising:

a warning generating section for generating a warning when a predicted second parameter satisfies predetermined conditions.

14. The information management server according to claim 11,

wherein the prediction formula generator section generates the prediction formula after learning the change of the second parameter.

15. The information management server according to claim 11,

wherein the prediction formula generator section generates a prediction formula by the multiple regression analysis with the first measured parameter as a response variable, and the second measured parameter as a predictor variable.

16. The information management server according to claim 11,

wherein the prediction formula generation section generates a prediction formula by the multiple regression analysis with the first parameter measured only discretely as a response variable, and the second parameter, acceleration, always measured as a predictor variable.

17. The information management server according to claim 16,

wherein the prediction formula generation section comprising:

a scalar quantity calculating section for calculating scalar quantity of the acceleration;

the number of times of a zero crossing calculation section for calculating number of times the magnitude of acceleration crosses 0 or a predetermined value near zero; and

a frequency calculating section for calculating the frequency of appearance of the number of times of the zero crossing within a prescribed period, wherein the frequency of appearance is specified as a predictor variable.

18. The information management server according to claim 17,

wherein the prediction formula generation section further comprising a continuation index calculating section for calculating a continuation index defined as the number of continued time intervals divided by the total number of intervals with same zero crossing frequency, and

wherein the frequency of appearance of the zero crossing within a prescribed period and the continuation index are specified as predictor variables.