Charging Station Time Verification via Central Testing Station
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Solution Overview
Problem
Existing charging stations for electric vehicles face challenges in ensuring accurate time information for billing purposes, especially with multiple tariff changes per day, which can lead to incorrect energy billing due to potential manipulation or calibration errors in smart meters.
Innovation Solution
A method is introduced where time information from measuring stations, including charging stations, is securely transmitted to a central testing station using a unique key, ensuring the data packet's integrity through electronic signatures, and compared against a calibrated time standard to detect any deviations or manipulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If variable electricity tariffs with multiple tariff changes per day are implemented, then energy pricing flexibility and adaptability are improved, but the risk of time information manipulation and billing errors increases
Solution Approach 1:
A central testing station is introduced as an intermediary between measuring stations and billing systems. This station receives time information from multiple measuring stations, validates it against a reference time source, and stores verified data. This intermediary layer prevents direct manipulation while enabling flexible tariff structures, as the central station ensures time accuracy without restricting tariff variability.
Solution Approach 2:
The system implements feedback mechanisms where time information is continuously monitored and validated. The central testing station receives time data from measuring stations, compares it with reference time, and can detect deviations. This feedback loop ensures that time manipulation attempts are identified and corrected, maintaining reliability while allowing flexible tariff changes.
2Loss of information
If customers can independently check time on meters, then transparency and customer awareness are improved, but this becomes impractical when tariff changes occur multiple times per day
Solution Approach 1:
The central testing station creates verified copies of time information from measuring stations. These copied and validated time data are stored centrally and can be provided to customers or billing systems without requiring customers to physically check meters. This maintains time transparency while eliminating the impracticality of frequent manual verification.
Solution Approach 2:
The central testing station acts as an intermediary that handles time verification on behalf of customers. Instead of customers directly checking meters multiple times per day, the central station performs automated verification and makes results available, thus maintaining transparency without burdening customers with frequent manual checks.
3Device complexity
If charging stations are provided without visual displays, then device simplicity and modernization are improved, but customer ability to verify time and detect discrepancies is reduced
Solution Approach 1:
The central testing station serves as an intermediary that provides time verification functionality without requiring visual displays at charging stations. Time information is collected, validated, and stored centrally, allowing charging stations to remain simple while verification capability is maintained through the central system that can provide validated time data to customers or billing systems.
Solution Approach 2:
The physical visual display and manual verification mechanism at charging stations is replaced with an electronic/digital system. Time information is transmitted electronically to the central testing station, which validates and stores it. This substitution maintains verification capability while simplifying the charging station hardware by removing visual display requirements.
4Reliability
If time information is transmitted securely with electronic signatures, then data integrity and tamper-proofing are improved, but system complexity and processing requirements increase
Solution Approach 1:
The central testing station acts as an intermediary that handles the complex tasks of electronic signature verification and validation. Measuring stations can transmit time information with signatures, and the central station performs the verification against reference time and stores validated data. This concentrates the complexity in one location rather than requiring all measuring stations to have sophisticated verification capabilities.
Solution Approach 2:
The functions of time collection, electronic signature verification, reference time comparison, and validated data storage are merged into a single central testing station. This consolidation improves data integrity through comprehensive verification while managing system complexity by centralizing processing requirements rather than distributing them across multiple measuring stations.
Data Source
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AI summary
The subject matter relates to a method and to an apparatus for checking a time information item provided in a measurement station (2), in particular a charging station (2) for electric vehicles. In order to be able to check the time information item, it is proposed that the time information item provided in the measurement station (2) is captured, that the time information item is transmitted from the measurement station (2) to a verification location (23) which is spatially separated from the charging station (2), that the transmitted time information item is compared in the verification location (23) to a time standard provided in the verification location (23) and that the comparison result is stored in the verification location (23).