Sensor Node Data Transmission via Time Synchronization
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Solution Overview
Problem
Traditional wireless sensor networks for building and bridge monitoring face challenges with battery-powered sensors that require frequent replacements, leading to resource wastage and inefficiencies in data transmission due to differences in data collection rates and energy collection rates among nodes, resulting in data loss and collisions.
Innovation Solution
A node data transmission method that employs time synchronization and role conversion between neighboring nodes, where nodes adjust their energy collection and data transmission roles based on energy levels and buffer thresholds to optimize data transmission and reduce energy wastage, ensuring synchronized data transfer and minimizing collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional battery-powered wireless sensors are used for building monitoring, then data collection accuracy is improved, but battery replacement frequency increases leading to resource waste and maintenance costs
Solution Approach 1:
The patent extracts the power consumption component from the sensor system by using passive sensors that do not require batteries. The sensing function is separated from the power supply function, allowing the sensor to operate without active power sources and eliminating battery replacement needs.
Solution Approach 2:
The patent replaces the battery-powered active sensor system with a passive sensor system that uses electromagnetic induction. The mechanical/electrical power supply (battery) is substituted with an electromagnetic energy harvesting mechanism that converts ambient electromagnetic energy into electrical energy for the sensor operation.
2Area of stationary object
If wireless sensors are deployed throughout large bridge structures, then monitoring coverage is improved, but the number of sensors and maintenance requirements increase significantly
Solution Approach 1:
The passive sensors harvest energy from ambient electromagnetic environments themselves, making the sensor network self-powered without external battery replacements. This self-service capability reduces maintenance complexity while allowing extensive deployment coverage.
3Adaptability or versatility
If nodes with different energy collection rates transmit data independently, then data transmission flexibility is improved, but data loss and collisions increase
Solution Approach 1:
The patent implements periodic wake-up and sleep cycles for sensor nodes, where nodes wake up at scheduled intervals to transmit data and then return to sleep mode. This periodic action synchronizes data transmission across nodes with different energy collection rates, preventing data collisions while maintaining transmission flexibility.
Solution Approach 2:
The patent uses time synchronization mechanisms that allow nodes to preliminarily determine their wake-up times and transmission schedules before actual data generation. This preliminary timing coordination ensures that nodes are ready to transmit when data is available, preventing data loss due to unsynchronized operations.
Data Source
AI summary
A node data transmission method, which pertains to the field of information technology, wherein in order to solve the problem of rationally processing the relationship between data collection and data transmission among multiple radio-frequency charged nodes, two neighboring nodes are synchronously awakened by a time synchronization method, and after the two neighboring nodes are time synchronized and awakened, the node determines data cache thereof and performs a corresponding node role conversion, and the effect thereof is reasonable use of the electricity.