Server Detects Power Theft in Wireless Charging Systems
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Solution Overview
Problem
The existing non-contact power supply systems lack the capability to detect electricity stealing or leakage in ground power supply devices, making it difficult to identify and address such issues.
Innovation Solution
A server system is introduced that communicates with ground power supply devices and vehicles, using statistical methods to set determination threshold values based on total power supply data to detect anomalies, and can instruct devices to prohibit power supply and notify external organizations of potential theft or leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no detection means are installed in the ground power supply device, then the device complexity is reduced and manufacturing cost is lowered, but the ability to detect stealing or leakage of electricity is lost
Solution Approach 1:
The patent introduces a server as an intermediary component that receives power supply amount information from multiple ground power supply devices and performs centralized theft detection processing. This mediator approach allows detection functionality to be added without installing complex detection means in each individual ground power supply device, thus resolving the contradiction between detection capability and device complexity
Solution Approach 2:
Each ground power supply device autonomously measures and records its own power supply amount information, then transmits this data to the server. This self-service approach enables the system to gather necessary detection data without requiring external detection equipment at each device location, reducing overall system complexity while maintaining detection capability
2Measurement precision
If statistical methods are used to set determination threshold values, then the precision of theft detection is improved, but the processing time and computational resources increase
Solution Approach 1:
The server performs statistical processing on power supply amount information from multiple ground power supply devices in advance to determine threshold values before actual theft detection occurs. This preliminary action allows the system to have pre-established reference thresholds for comparison, reducing real-time processing requirements while maintaining high detection accuracy
Solution Approach 2:
The patent uses power supply amount information from a plurality of ground power supply devices (excessive data collection) to statistically determine threshold values. By utilizing more data points than the minimum single-device information, the system achieves higher detection precision through statistical analysis, accepting increased computational effort in exchange for superior accuracy
3Reliability
If the server monitors total power supply amount from multiple ground power supply devices, then the detection coverage is expanded, but the communication data volume and processing load increase
Solution Approach 1:
The patent extracts only the essential power supply amount information from each ground power supply device and transmits this condensed data to the server. By taking out only the necessary measurement data rather than transmitting complete operational parameters, the system expands detection coverage across multiple devices while keeping communication data volume manageable
Solution Approach 2:
The server merges power supply amount information from multiple ground power supply devices into a unified dataset for centralized analysis. This combining approach allows the system to achieve comprehensive detection coverage across the network while processing aggregated data in a single location, reducing the need for redundant processing at each device
Data Source
AI summary
A server includes: a communicator configured to communicate with a plurality of ground power supply devices configured to transmit electric power to a vehicle in a non-contact manner; a storage configured to store at least information on a total power supply amount within a predetermined period of the ground power supply devices; and one or more processors configured to, when a total power supply amount within a predetermined period of one ground power supply device among the ground power supply devices is equal to or greater than a determination threshold value set based on data of the total power supply amount within the predetermined period of the ground power supply devices, determine that stealing or leakage of electricity has occurred in the one ground power supply device.