Clock Quartz Oscillator Synchronization via Network Time Deviation
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Solution Overview
Problem
In data exchange scenarios involving multiple sensors and calculation units, ensuring synchronized clocks is challenging, leading to time deviations in measurement data, which complicates processing and integration.
Innovation Solution
A method that synchronizes the clock quartz oscillator by calculating deviations between calculation unit, network, and sensor times, updating frequencies, and adjusting sensor interruption frequencies to align with network clock time, ensuring all units are time-synchronized.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sensor adjusts its clock according to the clock in calculation unit, then the time deviation between the sensor and the calculation unit is reduced, but when multiple sensors exchange data via multiple calculation units, the clocks in different calculation units cannot be entirely identical, causing time deviation in measurement data collected by sensors connected with different calculation units
Solution Approach 1:
The patent introduces a network clock as an intermediary reference that all calculation units and sensors synchronize to. Instead of direct peer-to-peer synchronization between sensors and calculation units, all devices adjust their clocks based on the network clock time, ensuring transitive synchronization across the entire system.
Solution Approach 2:
The patent implements feedback mechanisms where calculation units continuously calculate the first deviation between their local time and network clock time, update fundamental deviation, and adjust their clocks accordingly. Sensors similarly calculate second deviation from calculation unit time and adjust their interruption frequencies based on this feedback.
2Reliability
If direct synchronization between sensor and calculation unit is implemented, then time deviation between them is reduced, but ensuring all clocks in different calculation units are entirely identical becomes difficult, complicating data integration
Solution Approach 1:
The patent creates a universal time reference system where the network clock serves as a common time source for all calculation units and sensors. This universal reference enables any device in the system to synchronize with any other device through the common network clock, improving both reliability and adaptability of data integration.
Solution Approach 2:
The network clock acts as a mediator that enables indirect synchronization between any two devices in the system. Rather than requiring direct synchronization pairs, all devices use the network clock as an intermediate reference point, simplifying the synchronization architecture and improving data integration capability.
3Ease of operation
If multiple sensors and calculation units operate independently with their own clocks, then system operation is simple, but time deviation occurs in data transmission, requiring complex synchronization mechanisms
Solution Approach 1:
The patent enables each calculation unit and sensor to autonomously synchronize its own clock by calculating deviations from the network clock and automatically adjusting its time and interruption frequencies. This self-service approach maintains operational simplicity while achieving precise timing synchronization without requiring complex centralized control.
Data Source
AI summary
The present application relates to a clock quartz oscillator synchronization method, system and apparatus, in which the method includes, when a calculation unit is in network connection, calculating a first deviation between a calculation unit time and a network clock time; updating a fundamental deviation according to the first deviation; updating the calculation unit time and calculating an actual refresh frequency of the calculation unit according to the fundamental deviation; calculating a second deviation between the calculation unit time and a sensor time; and according to the second deviation, updating the sensor time and calculating an actual interruption frequency of the sensor. The present application provides a synchronization method for calculation, estimation, correction, compensation of time deviation caused by the clock quartz oscillator, which has a benefit of time deviation reduction when one or more sensors are in data exchange with one or more calculation units.