Clock Circuit Switching Using Frequency Offset Anomaly Detection
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Solution Overview
Problem
Current clock circuits in integrated digital products are prone to failures, leading to system instability and service interruptions, which can only be resolved by replacing components, causing operational disruptions.
Innovation Solution
A switching system for clock circuits that includes a clock generating component with multiple clocks, a clock switching component, and a controller that monitors frequency offsets and switches to a standby clock when anomalies are detected, ensuring smooth operation by integrating a reference clock and using a multiplexer for seamless transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single clock circuit is used, then the device complexity is reduced, but the reliability of system operation deteriorates
Solution Approach 1:
The clock generating component is segmented into multiple independent clock circuits (first clock, second clock, third clock, etc.), each capable of operating independently. This segmentation allows the system to maintain multiple clock sources simultaneously, improving reliability while managing complexity through modular design
Solution Approach 2:
Standby clock circuits are prepared in advance before any clock failure occurs. The system pre-configures multiple clock sources and their switching mechanisms, so that when a clock fails, an alternative is already ready to take over immediately without requiring complex real-time decision-making or component replacement
2Reliability
If component replacement is performed when clock failure occurs, then the reliability is restored, but the productivity of system operation deteriorates due to service interruption
Solution Approach 1:
Standby clock circuits are prepared in advance before any clock failure occurs. The system pre-configures multiple clock sources and their switching mechanisms, so that when a clock fails, an alternative is already ready to take over immediately without requiring component replacement or service interruption
Solution Approach 2:
The controller continuously monitors the operation status of each clock circuit and provides feedback control. When a clock failure is detected, the system automatically triggers the switching mechanism to transition to a standby clock, restoring reliability without human intervention or service disruption
3Productivity
If automatic clock switching is implemented, then the productivity of system operation is improved, but the device complexity increases due to additional monitoring and switching components
Solution Approach 1:
The controller performs multiple functions: it generates control signals for the clock switching component, monitors the operation status of all clock circuits, determines frequency offsets, and manages the switching logic. This multi-functionality reduces the need for separate dedicated components for each task, managing complexity while enabling automatic switching and continuous operation
Data Source
AI summary
A switching system, method and apparatus of a clock circuit, and a non-transitory readable storage medium are provided. A clock switching component is configured to collect a first clock signal generated by the clock generating component. The controller determines, based on the first clock signal and a second clock signal generated by a reference clock, a frequency offset between the clock generating component and the reference clock, and sends, in response to the first clock signal and the frequency offset both satisfy set anomaly conditions, a switching signal to the clock switching component. The clock switching component controls the clock generating component to switch a current clock to a standby clock based on the switching signal. The controller identifies, based on the first clock signal and the frequency offset, an operating state of the current clock.