Solid-State Register Light Detection Mode Activation
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Solution Overview
Problem
Conventional utility meters, including water and gas meters, face challenges in efficiently managing power consumption and operational modes, particularly in scenarios where light exposure conditions can unintentionally activate modes, leading to inefficiencies and potential errors.
Innovation Solution
A solid-state register (SSR) in utility meters utilizes an optical sensor and microcontroller to detect light conditions, allowing the meter to operate in specific modes based on intentional light transitions, while implementing a detection filter to differentiate between intentional and unintentional light changes, thereby conserving power and improving operational efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the register uses light detection to activate operating modes, then the meter can respond to intentional light conditions, but unintentional light exposure may cause erroneous mode activation
Solution Approach 1:
The register dynamically adjusts its light detection sensitivity based on operational context. The system transitions between different operational states (sleep mode, active mode) and modifies its response threshold for light detection accordingly, allowing it to be more sensitive during intentional activation periods while maintaining stability during normal operation.
Solution Approach 2:
The system implements a feedback mechanism where the register monitors light detection events and adjusts its operational state based on the pattern and intensity of detected light. The feedback loop evaluates whether detected light represents an intentional activation signal or environmental interference, and modifies subsequent detection behavior accordingly to prevent erroneous mode changes.
2Use of energy by moving object
If the register operates in low-power mode to conserve energy, then power consumption is reduced, but the register may fail to detect intentional light conditions for mode activation
Solution Approach 1:
The register employs periodic sampling of light conditions rather than continuous monitoring. During low-power mode, the optical sensor takes periodic measurements at predetermined intervals, allowing the system to maintain adequate detection capability while significantly reducing average power consumption compared to continuous operation.
Solution Approach 2:
The system uses the existing operational framework of the register to manage its own power consumption and detection requirements. The register autonomously determines when to wake from low-power mode based on periodic light sampling, eliminating the need for external intervention or additional dedicated wake-up circuitry.
3Ease of operation
If the register continuously monitors light conditions, then intentional light transitions can be detected, but power consumption increases
Solution Approach 1:
The optical sensor operates in a periodic sampling mode, taking measurements at predetermined intervals rather than continuously monitoring light conditions. This approach maintains the ability to detect intentional light transitions while significantly reducing the average power consumption associated with sensor operation.
Solution Approach 2:
The system maintains continuous operational readiness by implementing periodic monitoring that ensures no intentional light transitions are missed. The continuous useful action is preserved through strategic periodic sampling that catches meaningful light events while allowing the system to remain in low-power states between measurements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The SSR effectively manages power consumption and operational modes by accurately responding to intentional light conditions, reducing the risk of unintentional mode activation, thus enhancing the meter's reliability and usability for installers and users.
Implementation Method 1
an optical sensor configured to generate outputs indicative of detected light levels
Data Source
AI summary
Technologies are described herein for activating one or more operating modes of a register in a meter. The register is operated in a first mode. Light detections indicating whether the register is exposed to light or isolated from light are read. It is determined whether a condition is met based on the light detections. Upon determining that the condition is met, operating the register in a second mode.