Power Meter Mounting Flexibility and USB Safety
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Solution Overview
Problem
Current power meters for electrical submetering face challenges such as cumbersome configuration, limited mounting flexibility, difficulty in reading displays when not in line, requirement of de-energizing the building for configuration changes, confusing error indications, and complex data logging and access.
Innovation Solution
A measurement device with improved mounting flexibility, intuitive user interface, configurable multi-function alarm indicators, and the ability to use USB ports while the main power is on, along with automatic detection and redefinition of mis-wired inputs, facilitating easier installation, configuration, and data access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power meter is mounted in a separate enclosure to meet code requirements, then safety compliance is improved, but installation cost increases and on-board displays are blocked
Solution Approach 1:
The patent integrates the power meter directly into the electrical panel enclosure, eliminating the need for a separate external enclosure. This merging of functions allows the power meter to meet safety compliance requirements while reducing installation costs and maintaining display visibility within the same enclosure space.
2Device complexity
If the on-board display is in fixed orientation relative to the meter, then manufacturing simplicity is improved, but readability decreases when mounted in non-standard orientations
Solution Approach 1:
The patent employs a rotatable display module that can be adjusted to different orientations. This dynamic adjustment capability allows the display to remain readable regardless of how the power meter is mounted in the electrical panel, solving the contradiction between fixed manufacturing simplicity and operational readability.
3Adaptability or versatility
If configuration is performed using remote software, then flexibility is improved, but configuration complexity increases and becomes non-intuitive
Solution Approach 1:
The patent incorporates a local user interface with keypad and display directly on the power meter, enabling users to perform configuration, monitoring, and diagnostics without requiring external computers or complex remote software. This self-service capability simplifies the configuration process while maintaining flexibility.
4Productivity
If USB access is enabled while power is on, then operational continuity is improved, but safety risks increase
Solution Approach 1:
The patent introduces an isolated USB interface that electrically separates the communication pathway from the high-voltage power circuits. This intermediary isolation barrier allows USB access and data transfer to occur safely while the power meter remains energized, eliminating safety risks while maintaining operational continuity.
5Device complexity
If mis-wired inputs are not automatically detected, then device simplicity is maintained, but installation errors increase and require de-energizing for correction
Solution Approach 1:
The patent incorporates automatic detection and diagnostics functionality that provides real-time feedback on wiring correctness. The system detects mis-wired inputs and communicates errors through the local display and keypad, allowing installers to correct issues without de-energizing the system or requiring complex external diagnostic tools.
Data Source
AI summary
A measurement device providing a graphical user interface (GUI) to a user on a remote terminal comprising at least one first processor; and at least one first memory including one or more first sequences of instructions to perform the steps of transmitting a GUI displaying a at least one of a first, a second, a third, and a fourth image in response to at least one of a voltage characteristic, a current characteristic, and a load characteristic obtained from the user through the GUI on the remote terminal. Then, the measurement device stores in a memory the at least one of the voltage characteristic, the current characteristic, and the load characteristic.