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Synchronization triggers for mechanical-vibration wireless sensor networks play an important role in data acquisition and the analysis of multiple nodes. At present, most nodes are designed using a single protocol, which makes it difficult to achieve a balance between network establishment and synchronization. Meanwhile, such synchronization trigger methods rely on a clock, beacon, or communication between nodes. A method based on a clock and beacon requires frequent timestamps, which reduces the synchronization trigger accuracy and increases the power consumption. The communication between nodes requires these nodes to be at a close distance; otherwise, the node cannot receive synchronization information. Aiming at the above problems, a path perception synchronization trigger method based on dual-mode multiplexing and cluster networks is proposed. First, the node is designed using dual mode multiplexing. Second, an adjoint networking method is proposed to construct the cluster network topology. Next, a path perception time measurement method based on the terminal device and terminal assistant measurement without clock synchronization, beacon synchronization, and communication between nodes is discussed. Finally, a maximum time deviation compensation and time block synchronization trigger measurement method are proposed to solve the problems of a time delay compensation and system instruction interruption. The experimental results show that the maximum time error of the path perception synchronization trigger is between 50 and 60 ls, and the minimum time error is between 10 and 16 ls, which significantly improves the synchronization triggering accuracy under conditions that do not rely on clock synchronization, beacon synchronization, or communicating between nodes.

Path Perception Synchronization Trigger Method for Dual Mode Multiplexing Mechanical Vibration Wireless Sensor Networks