一种时间脉冲信号无缝切换装置及切换方法
By combining a multi-channel time difference measurement unit and a controlled oscillator, seamless signal switching in the atomic clock group timekeeping system was achieved, solving the phase jump problem caused by clock source failure and improving the system's reliability and continuity.
CN116961652BActive Publication Date: 2026-07-17CHENGDU TONGXIANG TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHENGDU TONGXIANG TECH CO LTD
- Filing Date
- 2023-07-17
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
In atomic clock timing systems, the phase jump of the time code signal caused by clock source failure or signal switching is difficult to avoid, affecting the continuity of high-precision applications.
Method used
By employing a combination of a multi-channel time difference measurement unit, a signal processing unit, a controlled oscillator, and a phase shifting unit, the time difference is measured through a time interval counter, and the phase shifter delay and the controlled oscillator frequency are adjusted to achieve seamless signal switching.
Benefits of technology
It reduces phase and power fluctuations during signal switching, improves system reliability, and avoids signal interruption and phase jump.
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Figure CN116961652B_ABST
Abstract
本发明公开了一种时间脉冲信号无缝切换装置及切换方法，包括多通道时差测量单元、信号处理单元、受控振荡器、时码产生单元、移相单元；包括以下步骤：S1.利用时间间隔计数器测量输出信号T0与选定通道Ti的时间偏差△Ti；S2.通过时间偏差△Ti实时调整移相器的延时数值△φi；S3.依据时间偏差值△Ti与移相数值△φi计算受控振荡器与外部输入时码信号的相对频率偏差△fi；S4.调整受控振荡器的频率，使受控振荡器与选定通道Ti一致。本发明有效地降低了由于时钟源故障，丢失，信号切换等情况下输出信号的相位跳变问题。
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