Multi-node collaboration based storage method for sensor network
A sensor network, multi-node technology, applied in network topology, transmission system, electrical components, etc., can solve problems such as excessive data volume, unbalanced energy and storage consumption, and achieve the effect of prolonging survival time
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[0013] Phase 1: Determine how nodes cooperate
[0014] The calculated time difference of the local time recorded by each node separately, using the time difference relative to the current time to define the event identifier. For example: after event E occurs, nodes A and B both sense the event and record them as T according to their local time. AE And T BE , The time when A and B communicate is T A And T B , By comparing whether it is satisfied
[0015] ΔT A (=T A -T AE )=ΔT B (=T B -T BE ) To judge whether they are the same event.
[0016] After the event is identified, the node collaboration method is as follows: when the node that senses the event obtains the image data, it first caches it in the node’s RAM and extracts image features, generates a collaboration message based on this, and then broadcasts the following within the communication range Format query message:
[0017] Msg
[0018] {
[0019] MsgType=QueryMsg; / / Message type definition
[0020] SensorId; / / ID of the no...
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