Navigation device for dead reckoning
US-2015354975-A1 · Dec 10, 2015 · US
US9459103B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9459103-B2 |
| Application number | US-201213541196-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 3, 2012 |
| Priority date | Mar 22, 2012 |
| Publication date | Oct 4, 2016 |
| Grant date | Oct 4, 2016 |
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A non-transitory computer readable medium stores a movement situation determining program for causing a computer to function as a two-axial direction correlation value calculating portion that calculates a correlation value indicating a relationship between motions in two axial directions of a plurality of axial directions on the basis of information obtained by detecting motions of a moving target in the plurality of axial directions, and a movement situation determining portion that determines a movement situation of the moving target on the basis of the correlation value.
Opening claim text (preview).
What is claimed is: 1. A non-transitory computer readable medium storing a movement situation determining program for causing: an acceleration sensor of a mobile computing device to acquire accelerations of a moving target by detecting accelerations of the mobile computing device in two axial directions of a plurality of axial directions on the basis of information obtained by detecting motions of a moving target in the plurality of axial direction, the mobile computing device traveling along with the moving target; a two-axial direction correlation value calculating portion, executed by a processor of the mobile computing device, to calculate a correlation value comprising at least one of energy ratios and the Spearman's rank correlation coefficients, wherein the correlation value indicates accelerations of the acceleration sensor on the basis of information obtained by detecting motions of the moving target in the plurality of axial directions; a movement situation determining portion, executed by the processor, to determine a movement situation of the moving target on the basis of the correlation value; a determination result notifying portion, executed by the processor, to notify, via a network, an external computing device that is separate from the mobile computing device of the determination result of the movement situation determining portion via a communication unit, wherein, when the external computing device receives the notification, the external computing device causes an application to open and displays the determination result using images or characters when connected to a display. 2. The computer readable medium according to claim 1 , further causing: an axial direction feature amount calculating portion to calculate a feature amount in each axial direction of the plurality of axial directions, wherein the movement situation determining portion determines the movement situation of the moving target on the basis of the feature amount and the correlation value. 3. The computer readable medium according to claim 1 , wherein the two-axial direction correlation value calculating portion sets one of the two axial directions as a direction of gravity. 4. The computer readable medium according to claim 2 , wherein the two-axial direction correlation value calculating portion sets one of the two axial directions as a direction of gravity. 5. The computer readable medium according to claim 1 , wherein the two-axial direction correlation value calculating portion calculates a similarity of frequency spectrum forms as the correlation value. 6. The computer readable medium according to claim 2 , wherein the two-axial direction correlation value calculating portion calculates a similarity of frequency spectrum forms as the correlation value. 7. The computer readable medium according to claim 3 , wherein the two-axial direction correlation value calculating portion calculates a similarity of frequency spectrum forms as the correlation value. 8. The computer readable medium according to claim 4 , wherein the two-axial direction correlation value calculating portion calculates a similarity of frequency spectrum forms as the correlation value. 9. The computer readable medium according to claim 1 , wherein the two-axial direction correlation value calculating portion calculates a ratio of vibration intensities as the correlation value. 10. The computer readable medium according to claim 2 , wherein the two-axial direction correlation value calculating portion calculates a ratio of vibration intensities as the correlation value. 11. The computer readable medium according to claim 3 , wherein the two-axial direction correlation value calculating portion calculates a ratio of vibration intensities as the correlation value. 12. The computer readable medium according to claim 4 , wherein the two-axial direction correlation value calculating portion calculates a ratio of vibration intensities as the correlation value. 13. The computer readable medium according to claim 1 , wherein the two-axial direction correlation value calculating portion calculates a ratio of vibration periodicities as the correlation value. 14. The computer readable medium according to claim 2 , wherein the two-axial direction correlation value calculating portion calculates a ratio of vibration periodicities as the correlation value. 15. The computer readable medium according to claim 3 , wherein the two-axial direction correlation value calculating portion calculates a ratio of vibration periodicities as the correlation value. 16. The computer readable medium according to claim 4 , wherein the two-axial direction correlation value calculating portion calculates a ratio of vibration periodicities as the correlation value. 17. A movement situation determining method comprising: receiving, at a movement situation determining device over a network, acceleration data from an acceleration sensor of a first mobile computing device, wherein the acceleration data is obtained by the acceleration sensor detecting accelerations of the first mobile computing device in two axial directions of a plurality of axial directions on the basis of information obtained by detecting motions of a moving target in the plurality of axial direction; calculating, by a processor of the movement situation determining device, a correlation value comprising at least one of energy ratios and the Spearman's rank correlation coefficients, wherein the correlation value indicates a relationship between accelerations in two axial directions of a plurality of axial directions of an acceleration sensor on the basis of information obtained by detecting motions of the moving target in the plurality of axial directions; and determining, by the processor of the movement situation determining device, a movement situation of the moving target on the basis of the correlation value; and sending a notification, from the movement situation determining device to a second mobile computing device over a network, the determination result via a communication unit of the movement situation determining device, wherein the second mobile computing device, the first mobile computing device and the movement situation determining device are all separate devices, wherein, when the second mobile computing device receives the notification, the second mobile computing device causes an application to open and displays the determination result using images or characters when connected to a display. 18. The movement situation determining method according to claim 17 , further comprising: calculating a feature amount in each axial direction of the plurality of axial directions, wherein the movement situation of the moving target is determined on the basis of the feature amount and the correlation value. 19. The movement situation determining method according to claim 18 , wherein at least one of a similarity of frequency spectrum forms, a ratio of vibration intensities and a ratio of vibration periodicities is calculated as the correlation value. 20. A non-transitory computer readable medium storing a movement situation determining program for causing: a transceiver to receive, at a movement situation determining device over a network, acceleration data from an acceleration sensor of a first mobile computing device, wherein the acceleration data is obtained by the acceleration sensor detecting accelerations of the first mobile computing device in two axial directions of a plura
including a sensor for measuring a physical value, e.g. temperature or motion · CPC title
executed aboard the object being navigated; Dead reckoning · CPC title
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