Remote Oscillator Synchronization With Traceable Frequency Feedback
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Solution Overview
Problem
Conventional oscillators cannot synchronize their frequency in real time with a standard oscillator located at a remote site, leading to delays in calibration and lack of traceability, as existing remote calibration systems rely on manual certificates that take several days to weeks to obtain.
Innovation Solution
An oscillation control device and synchronization system that utilize a signal processing section to produce a frequency signal synchronized with a public radio signal, compare it with the oscillator's frequency, calculate deviations, and adjust the oscillator's frequency to match the standard oscillator's frequency in real time using a communication network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If remote calibration is performed using manual certificates, then the reference frequency can be obtained, but the calibration time is extended to several days or weeks
Solution Approach 1:
The system automatically receives reference frequency data from the standard laboratory via communication network, compares it with the local oscillator frequency, and applies real-time feedback control to adjust and synchronize the oscillator frequency, eliminating manual intervention and certificate delivery delays
Solution Approach 2:
The patent replaces the mechanical certificate delivery system (physical mailing or manual transmission) with an electronic communication network system that automatically transmits reference frequency data, enabling real-time remote calibration without physical media exchange
2Speed
If GPS signal is used for frequency synchronization, then real-time synchronization is achieved, but traceability to national standard cannot be secured
Solution Approach 1:
The system introduces a dual-reference architecture where the GPS signal serves as an immediate synchronization source while the standard laboratory's reference oscillator acts as a trusted intermediary that provides periodic verification and calibration, ensuring both real-time performance and national standard traceability
Solution Approach 2:
The oscillation control device is designed to accept multiple reference sources (GPS signal and standard laboratory reference) and automatically switch between or combine them, making the system universally adaptable to different operational modes while maintaining both real-time synchronization and traceability capabilities
Data Source
AI summary
An oscillation control device for controlling a frequency of an oscillator located at the remote site from a standard laboratory having a standard oscillator. The control device includes: a comparison section to compare a frequency of the frequency signal synchronized with a radio signal produced by a signal processing section with a frequency of a oscillation signal outputted from an oscillator to be controlled, an acquisition section to obtain, through a communication network, a comparison result which is obtained by a comparison of a frequency of the standard oscillator held by the standard laboratory and a frequency of the radio signal, a calculation section to calculate deviation between the frequency of the oscillator to be controlled and the frequency of the standard oscillator based on their comparison, and a control section to control the frequency of the oscillator to be controlled, based on the deviation calculated.