Analog Signal Sampling Circuit With Energy-Based Rate Control
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Solution Overview
Problem
Existing analog signal processing technologies face challenges in efficiently determining the optimal sampling rate, leading to either poor signal quality due to undersampling or unnecessary power consumption when sampling rates are set too high, as they often rely on fixed rates rather than adapting to the dynamic energy levels of the signal across different frequency bands.
Innovation Solution
A circuit and method that generate a sample control signal based on the energy level of an analog signal in predefined frequency bands, dynamically adjusting the sampling rate to ensure that only necessary information is captured without wasting power, by selecting a sampling rate that is at least twice the highest frequency band's Nyquist rate where energy exceeds a threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed high sampling rate is used, then signal quality is maintained, but power consumption increases unnecessarily
Solution Approach 1:
The patent implements dynamic sampling rate adjustment by continuously monitoring the energy levels of the analog signal across multiple frequency bands. The sampling rate is adjusted in real-time based on the detected signal characteristics, transitioning from a fixed high sampling rate to a variable rate that adapts to actual signal conditions. This resolves the contradiction by maintaining signal quality only when necessary while reducing power consumption during low-activity periods.
Solution Approach 2:
The system changes the sampling rate parameter dynamically based on the energy levels detected in different frequency bands. By monitoring signal energy and adjusting the sampling rate parameter accordingly, the system maintains adequate signal quality when energy levels indicate important information while reducing the sampling rate to conserve power when signal energy is low across all frequency bands.
2Use of energy by moving object
If a fixed low sampling rate is used, then power consumption is reduced, but signal quality deteriorates due to undersampling
Solution Approach 1:
The system dynamically adjusts the sampling rate based on real-time signal energy detection. When energy levels in frequency bands indicate the presence of significant signal components, the sampling rate increases automatically to prevent undersampling and maintain signal quality. This dynamic adaptation resolves the contradiction by ensuring adequate sampling quality only when signal conditions require it, rather than maintaining a constantly high sampling rate.
Solution Approach 2:
The patent employs a feedback mechanism where the energy levels of the analog signal are continuously monitored and used to control the sampling rate. The system detects signal characteristics and feeds this information back to adjust the sampling rate accordingly, ensuring that signal quality is maintained when energy levels indicate important information while reducing power consumption when signal activity is low.
3Loss of information
If sampling rate is increased to capture all signal information, then information completeness is improved, but unnecessary information is captured wasting resources
Solution Approach 1:
The patent applies local quality by differentiating between different frequency bands and applying appropriate sampling rates based on the energy content of each band. Instead of uniformly sampling all frequency ranges at a high rate, the system identifies which frequency bands contain significant signal energy and adjusts the sampling rate specifically for those bands, capturing necessary information while avoiding resource waste in frequency ranges with low or no signal content.
Solution Approach 2:
The system changes the sampling rate parameter based on the distribution of signal energy across frequency bands. By analyzing which frequency bands contain significant information and adjusting the sampling rate parameter accordingly, the system captures necessary signal information while reducing the overall sampling rate to minimize resource consumption when certain frequency bands do not require high-rate sampling.
Data Source
AI summary
The present disclosure pertains to a circuitry for processing an analog signal, wherein the circuitry is configured to generate a sample control signal depending on an energy level of the analog signal in at least one predefined frequency band, and control a sampling rate for sampling the analog signal based on the generated sample control signal.