Wireless Sensor Network Prioritization for Seismic Data
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Solution Overview
Problem
Current wireless data collection systems in seismic surveys face challenges in accommodating high data rates from large numbers of geophones, leading to network overload and inefficiencies in traditional configurations like point-to-multipoint or pure mesh systems.
Innovation Solution
Implementing a hybrid wireless mesh/cellular network configuration with prioritization algorithms and power-saving techniques, using standards-based equipment and custom radios to manage data flow efficiently, and employing backhaul units to relay data from geophones to a central control unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional point-to-multipoint or pure mesh wireless systems are used, then network configuration is simplified, but the system cannot accommodate the high data rate required by seismic surveys
Solution Approach 1:
The patent divides the wireless network into multiple cells, each with its own base station and geophone groups. This segmentation allows the high data rate requirement to be distributed across multiple smaller networks, each handling a portion of the total data load, thereby achieving high overall productivity while keeping individual cell configurations manageable.
Solution Approach 2:
The patent introduces base stations as intermediary nodes between geophones and the central system. These base stations aggregate data from multiple geophones and relay it to the central facility, acting as mediators that reduce the complexity of direct point-to-multipoint connections while maintaining high data throughput through coordinated multi-node communication.
2Productivity
If all wireless sensor units transmit data simultaneously, then real-time data collection is achieved, but network load increases causing congestion and inefficiency
Solution Approach 1:
The patent implements periodic transmission cycles where geophones transmit data in organized rounds rather than continuously or simultaneously. Data is collected in periodic batches at base stations, which then relay it to the central facility in coordinated transmissions. This periodic action maintains real-time data collection capability while significantly reducing network congestion and energy waste from simultaneous transmissions.
Solution Approach 2:
The patent employs preliminary data aggregation at base stations before central transmission. Geophones first transmit to their local base station, which buffers and prepares the data for subsequent centralized relay. This preliminary action at the network edge reduces the peak load on the main communication channel, enabling real-time collection without overwhelming the network infrastructure.
3Speed
If wireless sensor units remain active continuously, then data transmission responsiveness is maximized, but battery life is reduced
Solution Approach 1:
The patent implements periodic wake-up cycles where wireless sensor units alternate between sleep and active states. Sensors are activated at predetermined intervals to transmit data and then return to low-power mode. This periodic operation maintains necessary transmission responsiveness for seismic monitoring while dramatically extending battery life by minimizing the time sensors spend in high-power transmission and reception states.
Solution Approach 2:
The system employs self-organizing wake-up protocols where sensor units autonomously manage their own power cycles based on local conditions and network coordination. Each unit can independently determine when to activate based on seismic activity detection or scheduled intervals, enabling self-service power management that balances responsiveness requirements with battery conservation without requiring continuous central control.
Data Source
AI summary
A method of collecting data from wireless sensor units arranged in a network. The method may comprise the steps of initiating distribution of control signals to the wireless sensor units, acquiring data with the wireless sensor units by sensing one or more physical parameters, each of the wireless sensor units transmitting the acquired data in response to the control signals; and each of the wireless sensor units transmitting of at least a portion of the acquired data according to a prioritizing algorithm associated with each respective wireless sensor unit.