Method and system for synchronous acquisition of wireless sensor network for structural health monitoring
A wireless sensor and health monitoring technology, applied in synchronization devices, network topology, wireless communication, etc., can solve problems affecting data alignment and data processing, clock vertical and horizontal offset, high acquisition frequency, etc., to achieve accurate and effective time information, The effect of high time synchronization efficiency and high synchronization acquisition accuracy
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[0024] Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements.
[0025] figure 1 Flowchart of the method for synchronous acquisition in wireless sensor networks for structural health monitoring. As shown in the figure, the method includes the following steps:
[0026] In step S10, the gateway periodically sends a time synchronization packet with a sending time stamp to the node.
[0027] In this step, the gateway will generate an SFD interrupt during the process of sending the time synchronization packet, so the sending time stamp is added to the sent time synchronization packet.
[0028] Step S11, judge whether the node receives the time synchronization packet sent by the gateway in the time synchronization channel through state transition, if yes, continue to step S12, if not, go to step S14.
[0029] Step S12, the node records the received timestamp.
[0030] In this step, when ...
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