High-Precision Time Interval Measurement Based on Triggerable Ring Oscillators and All-Phase FFT Algorithm

2019 ◽  
Author(s):  
Zhaohui Bu ◽  
Xianyun Chang ◽  
Zheng Zheng ◽  
Zhichun Chen ◽  
Wenxing Chen ◽  
...  
Keyword(s):  
High Precision ◽  
Time Interval ◽  
Ring Oscillators ◽  
Interval Measurement ◽  
Precision Time ◽  
Time Interval Measurement

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

Design and Realization of High Precision Time Interval Measurement Peripheral Circuit Based on FPGA

2012 ◽  
Vol 182-183 ◽  
pp. 520-524
Author(s):  
Jie Tao Diao ◽  
Jin Ling Xing ◽  
Zhi Huo ◽  
Zhou Zhou ◽  
Hong Qi Yu
Keyword(s):  
High Precision ◽  
High Speed ◽  
Time Interval ◽  
Data Sampling ◽  
Interval Measurement ◽  
High Speed Data ◽  
Precision Time ◽  
System Verification ◽  
Time Interval Measurement ◽  
Data Transferring

it introduces a design and realization of high precision time interval measurement peripheral circuit based on FPGA, which can realize the high speed data sampling, high speed series to parallel converting, USB data transferring. The system verification under virtex4 XC4SX35-FF668 of Xilinx is carried out. The test result shows that the design can detect the signal as low as -8mV, the valve voltage works stably and each module work normal.

A High-Precision Pulsed Laser Ranging Time Interval Measurement Technology Based on Sine Curves Method

2014 ◽  
Vol 41 (8) ◽  
pp. 0808002
Author(s):  
黄民双 Huang Minshuang ◽  
龙腾宇 Long Tengyu ◽  
刘慧慧 Liu Huihui ◽  
张泽 Zhang Ze
Keyword(s):  
High Precision ◽  
Pulsed Laser ◽  
Laser Ranging ◽  
Measurement Technology ◽  
Time Interval ◽  
Interval Measurement ◽  
Time Interval Measurement
Sign in / Sign up

Export Citation Format

Share Document