Oscillator-Based Conductor Sensing for Low-Power Button Detection
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Solution Overview
Problem
Existing input assemblies in electronic devices require numerous electronic components and consume significant power to detect movement, which is inefficient and power-intensive.
Innovation Solution
A conductor sensing assembly using an oscillator that detects movement by measuring the decay rate of oscillations, allowing for the determination of distance between the conductor and the oscillator, thereby reducing the need for complex components and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional input assemblies are used to detect movement, then detection functionality is achieved, but the number of electronic components increases and power consumption increases
Solution Approach 1:
The patent extracts the essential detection function from complex traditional input assemblies and implements it using a single oscillator circuit. By removing unnecessary electronic components and retaining only the core oscillation-based detection mechanism, the system achieves movement detection with minimal hardware, directly resolving the contradiction between detection functionality and device complexity.
Solution Approach 2:
The patent replaces traditional mechanical or complex electronic detection systems with an oscillation-based sensing mechanism. The oscillator's natural oscillations interact with the conductor's movement, converting mechanical movement into detectable electrical signal changes without requiring complex electronic component assemblies, thus reducing device complexity while maintaining measurement precision.
2Measurement precision
If traditional input assemblies are used to detect movement, then detection functionality is achieved, but power consumption increases
Solution Approach 1:
The patent employs periodic oscillation cycles to detect conductor movement. Instead of continuous power-intensive monitoring, the system uses periodic oscillator activation where each oscillation cycle provides detection data. This periodic action significantly reduces average power consumption while maintaining detection precision, as the oscillator operates in discrete intervals rather than continuously.
Solution Approach 2:
The oscillator circuit serves dual functions: it generates the detection signal and simultaneously provides the sensing mechanism through its own oscillation characteristics. The natural oscillations of the circuit interact with conductor movement, allowing the system to detect movement using its inherent operational characteristics without requiring additional power-intensive sensing components, thus reducing overall power consumption.
3Device complexity
If oscillator decay rate is used to determine distance, then fewer electronic components are needed, but measurement precision must be maintained
Solution Approach 1:
The patent utilizes changes in the oscillator's decay rate parameter as the conductor moves. By monitoring how the oscillation amplitude decays over time, the system extracts distance information from a single natural parameter of the oscillator circuit. This approach maintains measurement precision by leveraging the sensitive relationship between conductor position and decay characteristics, while avoiding the need for multiple sensors or complex measurement systems.
Solution Approach 2:
The oscillator acts as an intermediary between the conductor and the detection system. Rather than directly measuring conductor position, the system measures how the conductor's presence affects the oscillator's decay behavior. This intermediary approach enables precise distance determination through the oscillator's natural response, simplifying the overall system architecture while maintaining measurement accuracy.
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
This solution enables efficient detection of conductor movement with reduced power consumption and fewer electronic components, improving the functionality and energy efficiency of electronic devices.
Implementation Method 1
An oscillator may be provided as an LC oscillator that may be configured to produce oscillations that decay at a varying rate based on a varying distance between a sense coil (e.g., an inductor) of the LC oscillator and a conductor
Implementation Method 2
produce oscillations that are damped at a varying rate based on a varying distance between a sense coil (e.g., an inductor) of the LC oscillator and a conductor
Data Source
AI summary
An electronic device may include a conductor sensing assembly for sensing movement of a conductor, for example, in order to provide an input assembly that may be operative to detect a user's manipulation of a distance between the conductor and a portion of the conductor sensing assembly for controlling a functionality of the device. The conductor sensing assembly may include an oscillator that may produce oscillations that decay at different rates dependent upon a variable distance between a component of the conductor sensing assembly and a conductor of the input assembly. As the decay rate may be dependent on or otherwise correlate with the magnitude of a distance between the oscillator and a conductor, detection of the decay rate of the oscillator may enable determination of a state of a button input assembly that includes a conductor operative to be movable by a user with respect to the oscillator.