Synchronization of binocular motion parameters optoelectronic measurement system

Lingfei Zhang; Dong Ye; Rensheng Che; Gang Chen

doi:10.1117/12.815009

12 January 2009 Synchronization of binocular motion parameters optoelectronic measurement system

Lingfei Zhang, Dong Ye, Rensheng Che, Gang Chen

Proceedings Volume 7133, Fifth International Symposium on Instrumentation Science and Technology; 713342 (2009) https://doi.org/10.1117/12.815009
Event: International Symposium on Instrumentation Science and Technology, 2008, Shenyang, China

Abstract

The synchronization between high-speed digital cameras and computers is very important for the binocular vision system based on light-weighted passive IR reflective markers and IR LED array PCB board, which is often used to measure the 3-D motion parameters of a rocket motor. In order to solve this problem, a comparison on the existing approaches to camera synchronization in the published literature was conducted. The advantages and disadvantages of the currently used methods were illustrated and their suitable applications were discussed. A new method, which uses self-made hardware resetting camera and software triggering image acquisition board, is provided. The self-made hardware is used to send TTL signal to two image acquisition boards one time per second. The TTL signal is used to reset two cameras and two image acquisition boards as PRIN signal, and then two image acquisition boards send same EXSYNC signal to two cameras. In this way, two cameras can be synchronized to exposure and capture images in the mean time. The test results indicated that the new approach designed in this paper can meet the demand of image acquisition at a speed of 200f/s, whose synchronization accuracy is up to micro second.

Citation Download Citation

Lingfei Zhang, Dong Ye, Rensheng Che, and Gang Chen "Synchronization of binocular motion parameters optoelectronic measurement system", Proc. SPIE 7133, Fifth International Symposium on Instrumentation Science and Technology, 713342 (12 January 2009); https://doi.org/10.1117/12.815009

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