中圖分類號：TN925；TP212.9
文獻(xiàn)標(biāo)志碼：A
DOI: 10.16157/j.issn.0258-7998.223281
中文引用格式： 胡丹，張清華. 石英撓性加速度計時間同步無線測試系統(tǒng)[J]. 電子技術(shù)應(yīng)用，2023，49(7)：105-109.
英文引用格式： Hu Dan，Zhang Qinghua. Time synchronization testing system for quartz flexible accelerometer[J]. Application of Electronic Technique，2023，49(7)：105-109.

Time synchronization testing system for quartz flexible accelerometer

Abstract： In order to meet the synchronous test requirements of quartz flexible accelerometers in parameter modeling system, a time-synchronized wireless test system is designed based on wireless communication technology. The system is designed based on the CC2530 wireless SOC chip. The hardware captures timestamps to reduce some delay factors. Least Squares Fit (LSF) is used to estimate and compensate for the relative clock drift between wireless nodes. The monitoring synchronization method is designed to reduce the number of times sync packets sent. The single-hop and multi-hop monitoring synchronization test results show that the average synchronization error of the four hops is 3.826 μs, the mean square error is 3.286 μs, and the average monitoring errors of the four hops are 8.193 μs and 5.241 μs, respectively. The system can meet the synchronous test requirements of the quartz flexible accelerometer parameter modeling application, and can be extended to similar applications.

Key words : synchronization testing；time stamp；clock skew；monitoring