Field Radio Diagnostic Unit Optimizing Wireless Data Transmission
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Solution Overview
Problem
Current remote condition monitoring of field equipment in power systems is inefficient due to limited data rate and frequent network access, leading to high operational costs and reduced application responsiveness, especially in long-range wireless networks like LPWANs.
Innovation Solution
A diagnostic unit associated with field equipment optimizes communication by estimating and adjusting packet size, data rate, and duty cycle based on distance from the base station, generating packets that balance channel blocking time with application responsiveness, and scheduling transmissions to minimize network access while including link quality indicators for troubleshooting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If field radio devices operate at the lowest data rate setting to communicate with the farthest base station, then the communication distance is improved, but the transmission efficiency and application responsiveness deteriorate
Solution Approach 1:
The patent implements dynamic data rate adaptation where field radio devices automatically adjust their transmission data rate based on real-time channel conditions and distance from the base station. This allows devices to operate at optimal data rates rather than fixed lowest settings, improving transmission efficiency while maintaining communication reliability across varying distances.
Solution Approach 2:
The system changes transmission parameters (data rate, packet size, power level) based on measured channel conditions including distance from base station. By dynamically adjusting these parameters, the system optimizes the trade-off between communication distance and transmission efficiency, allowing devices to use higher data rates when closer to the base station and lower rates when farther away.
2Reliability
If field radio devices access the wireless network frequently to transmit measured data, then the data transmission completeness is improved, but the operational cost increases
Solution Approach 1:
The patent implements periodic transmission scheduling where field radio devices transmit measured data at optimized intervals rather than continuously or too frequently. The transmission period is dynamically adjusted based on data importance, channel conditions, and application requirements, reducing unnecessary network access while ensuring critical data is transmitted reliably.
Solution Approach 2:
The system uses feedback from channel quality indicators and transmission acknowledgments to optimize transmission frequency. When channel conditions are good and data is non-critical, transmission frequency is reduced to lower operational costs. When data is critical or channel conditions degrade, transmission frequency increases to ensure completeness, creating a cost-effective adaptive transmission strategy.
3Length of stationary object
If field radio devices transmit measured data at the lowest data rate, then the communication range is extended, but the application responsiveness deteriorates due to extended channel blocking time
Solution Approach 1:
The patent dynamically adjusts data rate and packet size based on application requirements and channel conditions. For time-sensitive applications or when devices are closer to the base station, the system uses higher data rates and optimized packet sizes to reduce channel blocking time and improve responsiveness, while maintaining extended communication range through adaptive parameter selection.
4Area of stationary object
If field radio devices are located farther from the base station, then the network coverage area is improved, but the available data rate decreases
Solution Approach 1:
The system dynamically changes transmission parameters including data rate, packet size, and power level based on the field radio device's distance from the base station. Devices farther from the base station automatically adjust to lower data rates and potentially larger packet sizes to maintain reliable communication, while devices closer to the base station utilize higher data rates for improved performance, thereby extending effective network coverage area.
Data Source
AI summary
Disclosed is a method for remote diagnosis and monitoring of field equipment over an industrial wireless network. A diagnostic unit associated with the field equipment optimizes communication of measured data by a field radio device to a base station. The diagnostic unit is communicatively linked to the field radio device. The measured data is obtained from the field equipment, and a plurality of communication parameters of a communication channel are obtained based on communication from the field radio device. Based on a packet size, a data rate and required application responsiveness, one or more packets comprising the measured data are generated. The generated packets are communicated to the field radio device at selected time intervals based on the packet size, and the application responsiveness, for communication to the base station.