Atomic Oscillator Anomaly Detection via Control Signal Feedback
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Solution Overview
Problem
Existing atomic oscillators face difficulty in detecting anomalies in oscillation frequency due to the need for a more stable external oscillation source, making it challenging to maintain high-precision oscillation stability.
Innovation Solution
An atomic oscillator design that includes a gas cell with alkali metal atoms, a light generator producing at least two different frequency components, a light detector, and a controller that determines resonance frequency based on transmission light and controls oscillation frequency, using control signals to detect anomalies by monitoring changes in control voltage or other signals rather than the output frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an external oscillation source with higher stability is used to detect anomalies, then measurement precision improves, but device complexity increases
Solution Approach 1:
The atomic oscillator uses itself as the reference for anomaly detection. The control signal that regulates the oscillation frequency serves dual purposes: both controlling the output frequency and providing the reference for detecting anomalies. This self-service approach eliminates the need for a separate external reference oscillation source, resolving the contradiction between measurement precision and device complexity.
Solution Approach 2:
The control signal generated within the atomic oscillator performs multiple functions: it controls the oscillation frequency of the output signal and simultaneously serves as the reference signal for anomaly detection. This multi-functionality allows the system to achieve high measurement precision for anomaly detection without adding external components, thus avoiding increased device complexity.
2Stability of the object's composition
If feedback control is implemented to maintain frequency stability, then oscillation stability improves, but device complexity increases
Solution Approach 1:
The patent implements feedback control by comparing the actual oscillation frequency with the resonance frequency determined from transmission light detection. The control signal adjusts the oscillation frequency based on this comparison, maintaining frequency stability. This feedback mechanism is integrated into the existing control structure, achieving stability without excessive complexity.
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
Facilitates the detection of anomalies in the atomic oscillator, ensuring stable and high-precision oscillation by initiating corrective actions when deviations are detected, thereby maintaining frequency stability.
Implementation Method 1
a light generator that irradiates the gas cell with irradiation light having at least two different frequency components; a light detector that detects transmission light transmitted by the gas cell; and a controller that determines a resonance frequency of the irradiation light based on a light amount of the detected transmission light
Data Source
AI summary
An atomic oscillator of the present disclosure includes: a gas cell in which alkali metal atoms are encapsulated; a light generator that irradiates the gas cell with irradiation light having at least two different frequency components; a light detector that detects transmission light transmitted by the gas cell; and a controller that determines the resonance frequency of the irradiation light based on the light amount of the detected transmission light, and controls an oscillation frequency based on the determined resonance frequency. The controller determines the state of the atomic oscillator based on a control signal output when controlling the oscillation frequency.