Indoor navigation system and method
First Claim
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1. A portable system comprising:
- a first sensor configured to provide rotational velocity data;
a second sensor configured to provide distance data based on a reflected signal; and
a processor coupled to the first sensor and the second sensor and configured to execute an algorithm using the rotation velocity data and the distance data to determine at least one of a position relative to a landmark and a heading relative to the landmark.
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Abstract
This document discusses, among other things, a portable device that generates position and orientation data to facilitate movement within a building. The device can be, for example, handheld or affixed to a cane. Data for navigation is derived from reflections from interior surfaces and dead reckoning sensors.
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Citations
28 Claims
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1. A portable system comprising:
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a first sensor configured to provide rotational velocity data; a second sensor configured to provide distance data based on a reflected signal; and a processor coupled to the first sensor and the second sensor and configured to execute an algorithm using the rotation velocity data and the distance data to determine at least one of a position relative to a landmark and a heading relative to the landmark. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A portable system comprising:
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a scanner to provide distance data based on a distance to a surface; a gyroscope to provide rotational data based on rotational movement; a pedometer to provide travel data based on linear movement; a processor in communication with the scanner, the gyroscope, and the pedometer and having instructions for determining navigation data based on the distance data, the rotational data, and the travel data; and an output device in communication with the processor and configured to render the navigation data in a human perceivable manner. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method comprising:
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receiving reflected data corresponding to a surface; receiving rotational velocity data corresponding to a rotation; receiving linear motion data; receiving a landmark location; and executing an algorithm using the reflected data, the rotational velocity data, and the linear motion data to determine at least one of a position relative to the landmark location and a heading relative to the landmark location. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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27. A system comprising:
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means for generating rotational velocity data; means for generating distance data based on a reflected signal; and means for determining, relative to a landmark, at least one of a position and a heading based on the rotational velocity data and the distance data.
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28. A system comprising:
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means for providing distance data based on a distance to a surface; means for providing rotational data based on a rotation; means for providing travel data based on movement; means for determining navigation data based on the distance data, the rotational data, and the travel data; and output means for rendering the navigation data in a human perceivable manner.
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Specification