Modular Electricity Meter Communication Device with Tamper-Proof Cover
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Solution Overview
Problem
Existing electricity meter installations lack a versatile and secure additional device for communication with electricity meters, particularly for remote reading and tariff changes, which requires a solution that ensures secure power supply and signal transmission while preventing unauthorized access and manipulation.
Innovation Solution
A modular communication device comprising a carrier module and a main function module that can be mechanically connected, with a cover that must be destroyed or sealed to access, ensuring secure connections and easy replacement, and designed for compatibility with both electronic and electromechanical meters for data transmission via power lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the additional device is designed as a single integrated unit, then the device complexity is reduced, but the adaptability and ease of replacement are worsened
Solution Approach 1:
The additional device is divided into two separate modules: a carrier module that contains the connection installation and a main function module that provides communication functions. This segmentation allows each module to be independently designed, manufactured, and replaced, thereby improving adaptability while keeping the overall device complexity manageable through standardized interfaces.
Solution Approach 2:
The carrier module is designed as a universal base that can accommodate different main function modules through standardized connection contacts. This universal design enables the same carrier module to support multiple communication functions (e.g., remote reading, tariff changes, meter reading) by simply replacing the main function module, thus achieving multi-functionality without increasing the complexity of the carrier itself.
2Reliability
If the connection contacts are accessible, then the ease of operation is improved, but the security and prevention of unauthorized access are worsened
Solution Approach 1:
A cover element is introduced as an intermediary component between the user and the connection contacts. This cover blocks direct access to the connection contacts, preventing unauthorized manipulation and electricity theft. The cover can be selectively removed or opened in controlled ways (e.g., through a breaking point or sealing mechanism) to allow authorized access when needed, thus balancing security with operational ease.
3Ease of operation
If the cover is easily removable, then the ease of operation is improved, but the security and prevention of unauthorized access are worsened
Solution Approach 1:
The cover is designed with a breaking point or sealing mechanism that prevents easy removal under normal conditions. This preliminary anti-action design makes unauthorized access difficult by requiring deliberate destruction or sealing of the cover. However, the design also includes controlled removal mechanisms (such as breaking points that can be intentionally activated) that allow authorized users to access the connection contacts when necessary, thus balancing security with operational ease.
4Adaptability or versatility
If multiple main function modules are available for selection, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The device is segmented into a standardized carrier module and interchangeable main function modules. This segmentation allows the system to offer multiple communication functions (remote reading, tariff changes, meter reading) without increasing the complexity of the carrier module itself, as each function is encapsulated in a separate, standardized module that can be independently selected and replaced.
Data Source
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AI summary
The communication unit for an electronic electricity meter, for remote reporting of consumption, has a carrier module (20) for the meter connection and a mechanically bonded main function module (21). Data are transmitted through telephone land lines, cellular radio network and/or a general packet radio service (GPRS). A hatch cover (24) allows access to the function module.