Method and system for locating devices with embedded location tags
First Claim
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1. A method for locating a set of target transmitting mechanisms using a mobile sensing infrastructure, the method comprising:
- detecting signals, at two receiver modules, each of which comprises a sensor, of a mobile sensing mechanism, from at least two reference transmitting mechanisms, each of which comprises a tag coupled to a device to be localized, wherein the two receiver modules are placed in fixed positions relative to each other on a mobile base that moves within four degrees of freedom;
determining a reference frame of the receiver modules on the mobile base of the mobile sensing mechanism based on the signals detected from the reference transmitting mechanisms over a time period when the mobile sensing mechanism moves within the four degrees of freedom;
determining locations of other target transmitting mechanisms, relative to the reference frame using the receiver modules on the mobile base of the sensing mechanism; and
indicating the locations of the target transmitting mechanisms.
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Abstract
One embodiment of the present invention provides a system that locates a set of target transmitting mechanism using a mobile sensing infrastructure. During operation, the system determines a reference frame of a sensing mechanism by detecting signals from at least two transmitting mechanisms. The system further determines locations of the target transmitting mechanism relative to the reference frame using the sensing mechanism. In addition, the system produces a result to indicate the locations of the target transmitting mechanisms.
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Citations
21 Claims
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1. A method for locating a set of target transmitting mechanisms using a mobile sensing infrastructure, the method comprising:
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detecting signals, at two receiver modules, each of which comprises a sensor, of a mobile sensing mechanism, from at least two reference transmitting mechanisms, each of which comprises a tag coupled to a device to be localized, wherein the two receiver modules are placed in fixed positions relative to each other on a mobile base that moves within four degrees of freedom; determining a reference frame of the receiver modules on the mobile base of the mobile sensing mechanism based on the signals detected from the reference transmitting mechanisms over a time period when the mobile sensing mechanism moves within the four degrees of freedom; determining locations of other target transmitting mechanisms, relative to the reference frame using the receiver modules on the mobile base of the sensing mechanism; and indicating the locations of the target transmitting mechanisms. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for locating a set of target transmitting mechanisms using a mobile sensing infrastructure, the system comprising:
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a mobile sensing mechanism that includes two receiver modules, each of which comprises a sensor, configured to; detect signals from at least two reference transmitting mechanisms, each of which comprises a tag coupled to a device to be localized, wherein the two receiver modules are placed in fixed positions relative to each other on a mobile base that moves within four degrees of freedom; determine a reference frame of the receiver modules on the mobile base of the mobile sensing mechanism based on the signals detected from the reference transmitting mechanisms over a time period when the mobile sensing mechanism moves within the four degrees of freedom; and determine locations of other target transmitting mechanisms, relative to the reference frame using the receiver modules on the mobile base of the sensing mechanism; and a indication mechanism configured to indicate the locations of the target transmitting mechanisms. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A computer readable storage medium storing instructions that when executed by a computer cause the computer to perform a method for locating a set of target transmitting mechanisms using a mobile sensing infrastructure, the method comprising:
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detecting signals, at two receiver modules, each of which comprises a sensor, of a mobile sensing mechanism, from at least two reference transmitting mechanisms, each of which comprises a tag coupled to a device to be localized, wherein the two receiver modules are placed in fixed positions relative to each other on a mobile base that moves within four degrees of freedom; determining a reference frame of the receiver modules on the mobile base of the mobile sensing mechanism based on the signals detected from the reference transmitting mechanisms over a time period when the mobile sensing mechanism moves within the four degrees of freedom; determining locations of other target transmitting mechanisms, relative to the reference frame using the receiver modules on the mobile base of the sensing mechanism; and indicating the locations of the target transmitting mechanisms.
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Specification