EARTHQUAKE PREDICTION INFORMATION PROVISION SYSTEM, PORTABLE TERMINAL, EARTHQUAKE PREDICTION INFORMATION PROVISION METHOD, AND RECORDING MEDIUM
1 Assignment
0 Petitions
Accused Products
Abstract
A detection of an anomaly of geomagnetism and a collection of data are performed by using portable telephones. Direction variations measured by geomagnetic sensors mounted to the portable telephones are collected via data transmission lines for portable telephones, and the variations are observed for each area. Earthquake occurrence warning information is transmitted to a portable terminal of a collaborator for geomagnetism information provision in an area in which a number of occurrences of the variations is significantly large.
8 Citations
30 Claims
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1-15. -15. (canceled)
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16. An earthquake prediction information provision system comprising:
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a plurality of fixing devices which are installed at a plurality of points, are individually fixed at a specified position and at a specified direction, and register installation direction data indicating said specified direction; a plurality of portable terminals which measure measurement direction data indicating an own direction by using a magnetic sensor and calculate difference data based on said installation direction data and said measurement direction data when connected to and fixed to any one of said plurality of fixing device; and a summarization device which collects from each of said plurality of portable terminals, position information of each of said plurality of portable terminals and said difference data, analyzes said difference data for each area, and transmits earthquake prediction information to a portable terminal which exists in an area when detecting an anomaly of magnetic variation in said area. - View Dependent Claims (17, 18, 19, 20, 21)
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22. A portable terminal comprising:
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a link unit for performing data communication with a fixing device which is fixed at a specified position and at a specified direction; a magnetic sensor for measuring a direction of said portable terminal by observing geomagnetism; a processing unit for registering installation direction data indicating said specified direction to said fixing device, obtaining said installation direction data from said fixed device when said portable terminal is fixed to said fixing device, and calculating difference data between measurement direction data measured by said magnetic sensor and said installation direction data; and a communication unit for transmitting position information of said portable terminal and said difference data to a summarization device which summarizes and analyzes said difference data for each area, and receiving said earthquake prediction information from said summarization device when said summarization device detects an anomaly of magnetic variation in an area in which said portable terminal exists. - View Dependent Claims (23, 24)
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25. An earthquake prediction information provision method comprising:
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registering a normal position of a compass to a fixing device which is fixed at a specified position; fixing a portable terminal to said fixing device; measuring a difference between a magnetic direction registered to said fixing device and a current direction measured by said portable terminal by using a magnetic sensor; transmitting measured data and position information of said portable terminal to a summarization device when said portable terminal has not been moved for a predetermined period of time; summarizing said measured data for each reception area to calculate an error from a magnetic north by using said summarization device; and transmitting earthquake prediction information from said summarization device to said portable terminal in a predetermined area when an extent of magnetic variation exceeds a reference value in said predetermined area. - View Dependent Claims (26, 27)
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28. A recording medium which holds a program to cause a computer to execute:
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performing a data communication with a fixing device which is fixed at a specified position and at a specified direction; measuring a direction of the computer by observing a geomagnetism; registering installation direction data indicating said specified direction to said fixing device; obtaining said installation direction data from said fixing device when the computer is fixed to said fixing device; calculating difference data between measurement direction data measured by said magnetic sensor and said installation direction data; transmitting position information of the computer and said difference data to a summarization device which collets and analyzes said difference data for each area; and receiving said earthquake prediction information from said summarization device when said summarization device detects an anomaly of magnetic variation in an area in which the computer exists. - View Dependent Claims (29, 30)
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Specification