An application of the Precision Time synchronization Protocol in a time-interval measurement system

2014 ◽  
Author(s):  
Te-Kwei Wang ◽  
Shinn-Yan Lin
Keyword(s):  
Measurement System ◽  
Time Synchronization ◽  
Time Interval ◽  
Interval Measurement ◽  
Precision Time ◽  
Time Interval Measurement ◽  
Synchronization Protocol

Research of the High-Precision Dual-Channel Sound Velocity of Seawater Measurement System

2014 ◽  
Vol 668-669 ◽  
pp. 940-943
Author(s):  
Bao Feng Zhang ◽  
Zi Ming Xie ◽  
Zhi Wei Li ◽  
Jun Chao Zhu
Keyword(s):  
Sound Velocity ◽  
High Precision ◽  
Measurement System ◽  
Velocity Measurement ◽  
Time Interval ◽  
Interval Measurement ◽  
Dual Channel ◽  
Precision Time ◽  
Time Interval Measurement ◽  
Time Of Flight Method

For single channel sound velocity measurement system accuracy was generally not high,a high-precision dual-channel sound velocity of seawater measurement system was designed.Based on ultrasonic speed of sound measurement in seawater with time-of-flight method,the system used ARM microcontroller to combine with high-precision time interval measurement chip,and the sound velocity measurement was translated into distance and time measurement. Then the influence of the time delay of the system was eliminated by method of difference.The paper introduced the modules of the system,and the high-precision time interval measurement method as the key technology of time-of-flight method for the velocity measurement system was expounded.It wasproved by experiment that the measurement accuracy of the system on the velocity reached 0.019m/s.

High speed and high precision time-interval measurement system in pulsed laser ranging

2015 ◽  
Vol 30 (1) ◽  
pp. 83-88 ◽  
Author(s):  
岱钦 DAI Qin ◽  
毛有明 MAO You-ming ◽  
吴凯旋 WU Kai-xuan ◽  
吴杰 WU Jie ◽  
李业秋 LI Ye-qiu
Keyword(s):  
High Precision ◽  
Measurement System ◽  
High Speed ◽  
Pulsed Laser ◽  
Laser Ranging ◽  
Time Interval ◽  
Interval Measurement ◽  
Precision Time ◽  
Time Interval Measurement
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