Network system, mobile device, method of controlling same, and computer program
First Claim
1. A network system comprising:
- a plurality of mobile devices each having a moving means and a sensor function and a wireless communication function, the mobile devices communicating sensor information about a target with one another and tracking the target;
target searching means for obtaining sensor information while the plurality of the mobile devices move, and for reporting the sensor information among the respective mobile devices by wireless communication;
target detecting means for reporting whether the target has been detected based on sensor information obtained by one of the mobile devices or for attempting to detect the same target in response to information received that the target has been detected by one of the mobile devices;
target focusing means for, in response to one of the mobile devices detecting a target, focusing a sensor on the target in cooperation with respective mobile devices adjacent to the mobile device detecting said target;
target surrounding means for surrounding the target by using a plurality of mobile devices that focus their respective sensors on the same target; and
wherein the target detecting means describes a maximum value of a number of mobile devices in a packet that reports that the target has been detected on the basis of the obtained sensor information, or ignores a report that the target has been detected from the mobile devices whose number exceeds the maximum value when the report is received.
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Accused Products
Abstract
A network system including a plurality of mobile devices is provided. The plurality of mobile devices each have a sensor function and a wireless communication function, the mobile devices communicating sensor information about a target with one another and tracking the target; a target searching section configured to obtain sensor information while the plurality of the mobile devices move and for reporting the sensor information among the mobile devices by wireless communication; a target focusing section configured to, in response to one of the mobile devices detecting a target, focus a sensor on the target in cooperation with mobile devices adjacent to the mobile device detecting the target; and a target surrounding section configured to surround the target by using a plurality of mobile devices that focus their sensors on the same target.
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Citations
35 Claims
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1. A network system comprising:
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a plurality of mobile devices each having a moving means and a sensor function and a wireless communication function, the mobile devices communicating sensor information about a target with one another and tracking the target; target searching means for obtaining sensor information while the plurality of the mobile devices move, and for reporting the sensor information among the respective mobile devices by wireless communication; target detecting means for reporting whether the target has been detected based on sensor information obtained by one of the mobile devices or for attempting to detect the same target in response to information received that the target has been detected by one of the mobile devices; target focusing means for, in response to one of the mobile devices detecting a target, focusing a sensor on the target in cooperation with respective mobile devices adjacent to the mobile device detecting said target; target surrounding means for surrounding the target by using a plurality of mobile devices that focus their respective sensors on the same target; and wherein the target detecting means describes a maximum value of a number of mobile devices in a packet that reports that the target has been detected on the basis of the obtained sensor information, or ignores a report that the target has been detected from the mobile devices whose number exceeds the maximum value when the report is received. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A mobile device that has a sensor function and a wireless communication function, that operates as a communication node on a wireless network, and that tracks a target by communicating sensor information with other communication nodes, the mobile device comprising:
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moving means; target searching means for obtaining sensor information while the mobile device is moved using the moving means and for reporting the sensor information among neighboring communication nodes; target detecting means for reporting whether the target has been detected on the basis of sensor information obtained by the mobile device to neighboring communication nodes or for attempting to detect the same target in response to information received that the target has been detected by a neighboring communication node; target tracking means for tracking the target detected on the basis of the sensor information obtained by the mobile device while focusing a sensor of the mobile device on the target; and wherein the target detecting means describes a maximum value of the number of communication nodes in a packet that reports that the target has been detected on the basis of the sensor information obtained by the mobile device, or ignores a report that the target has been detected from the communication nodes whose number exceeds the maximum value when the report is received. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A network system comprising:
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a plurality of mobile devices each having a moving means and a sensor function and a wireless communication function, the mobile devices communicating sensor information about a target with one another and tracking the target; a target searching means configured to obtain sensor information while the plurality of the mobile devices move and for reporting the sensor information among the mobile devices by wireless communication; a target detecting means for reporting whether the target has been detected based on sensor information obtained by one of the mobile devices or for attempting to detect the same target in response to information received that the target has been detected by one of the mobile devices; a target focusing means configured to, in response to one of the mobile devices detecting a target, focus a sensor on the target in cooperation with mobile devices adjacent to the mobile device detecting the target; a target surrounding means configured to surround the target by using a plurality of mobile devices that focus their respective sensors on the same target; and wherein the target detecting means describes a maximum value of a number of mobile devices in a packet that reports that the target has been detected on the basis of the obtained sensor information, or ignores a report that the target has been detected from the mobile devices whose number exceeds the maximum value when the report is received.
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28. A mobile device that has a sensor function and a wireless communication function, that operates as a communication node on a wireless network, and that tracks a target by communicating sensor information with other communication nodes, the mobile device comprising:
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a moving means; a target searching means configured to obtain sensor information while the mobile device is moving using the moving means and for reporting the sensor information among neighboring communication nodes; a target detecting means configured to report the fact that the target has been detected on the basis of sensor information obtained by the mobile device to neighboring communication nodes or for attempting to detect the same target in response to received information that the target has been detected from a neighboring communication node; a target tracking means configured to track the target detected on the basis of the sensor information obtained by the mobile device while focusing a sensor of the mobile device on the target; and wherein the target detecting mean describes a maximum value of the number of communication nodes in a packet that reports that the target has been detected on the basis of the sensor information obtained by the mobile device, or ignores a report that the target has been detected from the communication nodes whose number exceeds the maximum value when the report is received.
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29. A mobile device that has a sensor function and a wireless communication function, that operates as a communication node on a wireless network, and that tracks a target by communicating sensor information with other communication nodes, the mobile device comprising:
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moving means; target searching means for obtaining sensor information while the mobile device is moved using the moving means and for reporting the sensor information among neighboring communication nodes; target detecting means for reporting whether the target has been detected on the basis of sensor information obtained by the mobile device to neighboring communication nodes or for attempting to detect the same target in response to information received that the target has been detected by a neighboring communication node; target tracking means for tracking the target detected on the basis of the sensor information obtained by the mobile device while focusing a sensor of the mobile device on the target, wherein the target tracking means surrounds the target in cooperation with neighboring nodes that track the same target; and distance estimation means for estimating a relative distance to neighboring communication nodes, wherein the target tracking means determines whether or not the target can be surrounded on the basis of information of the relative distance to each communication node whose sensor is focused on the same target, the relative distance being estimated by the distance estimation means, and controls the movement operation by the moving means on the basis of the determination result. - View Dependent Claims (30, 31, 32, 33, 34)
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35. A mobile device that has a sensor function and a wireless communication function, that operates as a communication node on a wireless network, and that tracks a target by communicating sensor information with other communication nodes, the mobile device comprising:
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a moving means; a target searching means configured to obtain sensor information while the mobile device is moving using the moving means and for reporting the sensor information among neighboring communication nodes; a target detecting means configured to report the fact that the target has been detected on the basis of sensor information obtained by the mobile device to neighboring communication nodes or for attempting to detect the same target in response to received information that the target has been detected from a neighboring communication node; and a target tracking means configured to track the target detected on the basis of the sensor information obtained by the mobile device while focusing a sensor of the mobile device on the target, wherein the target tracking means surrounds the target in cooperation with neighboring nodes that track the same target; and a distance estimation means for estimating a relative distance to neighboring communication nodes, wherein the target tracking means determines whether or not the target can be surrounded on the basis of information of the relative distance to each communication node whose sensor is focused on the same target, the relative distance being estimated by the distance estimation means, and controls the movement operation by the moving means on the basis of the determination result.
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Specification