System and method for providing power management in a sensor network
First Claim
1. A power management system for a sensor network comprising:
- a plurality of sensing nodes forming at least part of a sensor network, each sensing node communicating with other sensing nodes and all of the plurality of sensing nodes having one associated power management device associated with a powered node of a network other than the sensor network, and each sensing node being interconnected through the power management device for receiving power from the powered node of the other network,wherein the power management device applies a first power management policy to a first sensing node and applies a second power management policy to a second sensing node, the first and second power management policies each specifying at least one of;
power delivered to the sensing node and power demand of the sensing node.
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Abstract
The present invention relates to a system and method for providing power management to sensing nodes in a sensor network. A system may include a plurality of sensing nodes, each sensing node connected through a power management device to an external power source, such as a powered node of another network, for managing power from the external power source to the sensing node. Beneficially, a plurality of power management devices allow for a sensor network of fixed or mobile wireless sensing nodes or sensor gateways to make use of power from an external source such as an another network e.g. an existing emergency lighting system or other similar powered building system. Thus for example, a sensor or group of sensing nodes and their associated power management devices may be integral with or co-located in proximity to powered nodes of these other networks. An intelligent power management device connected to at least one of the sensing nodes may provide for power policy management to sensing nodes based on monitoring power conditions such as available power, power level status, and information obtained from the sensing nodes indicative of network conditions, detecting a change therein, and regulating power to the sensing node depending on the change.
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Citations
26 Claims
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1. A power management system for a sensor network comprising:
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a plurality of sensing nodes forming at least part of a sensor network, each sensing node communicating with other sensing nodes and all of the plurality of sensing nodes having one associated power management device associated with a powered node of a network other than the sensor network, and each sensing node being interconnected through the power management device for receiving power from the powered node of the other network, wherein the power management device applies a first power management policy to a first sensing node and applies a second power management policy to a second sensing node, the first and second power management policies each specifying at least one of;
power delivered to the sensing node and power demand of the sensing node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A power management device for managing power to one or more associated sensing nodes of a sensor network from a powered node of a network other than the sensor network, the power management device comprising:
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a detector for monitoring one or more of power conditions, and network conditions detected by the sensor network; and a power converter to convert power from a powered node of the other network to power appropriate for use by the power management device and to the one or more associated sensing nodes dependent on said conditions, including applying a first power management policy to a first sensing node and applying a second power management policy to a second sensing node, the first and second power management policies each specifying at least one of;
power delivered to the sensing node and power demand of the sensing node.
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21. A method for managing the power to a sensor network from a powered node of a network other than the sensor network, to one or more associated sensing nodes in a sensor network, the method comprising the steps of:
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monitoring network conditions detected by the sensor network; and regulating power to the sensing node or to nodes of the other network depending on the conditions, including applying a first power management policy to a first sensing node and applying a second power management policy to a second sensing node, the first and second power management policies each specifying at least one of;
power delivered to the sensing node and power demand of the sensing node.
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22. A method for managing the power to a sensor network from a powered node of the network other than the sensor network, to one or more associated sensing nodes in a sensor network, the method comprising the steps of:
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monitoring power conditions detected by the sensor network; and regulating power to the sensing node or to nodes of the other network depending on the conditions, including applying different power management policies to different nodes, the power management policies each specifying at least one of;
power delivered to the sensing node and power demand of the sensing node.
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23. A method for managing the power to a sensor network from a powered node of the network other than the sensor network, to one or more associated sensing nodes in a sensor network, the method comprising the steps of:
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monitoring power conditions and network conditions detected by the sensor network; and regulating power to at least one of the sensing nodes and nodes of the other network, depending on the conditions, including applying a first power management policy to a first sensing node and applying a second power management policy to a first node of the other network, the first and second power management policies each specifying at least one of;
power delivered to the sensing node and power demand of the sensing node. - View Dependent Claims (24, 25, 26)
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Specification