基于GPS的XP系统下海量图像多机同步采集方法研究

Research on multi-camera synchronous mass-image acquisition method based on XP system using GPS time

根据惯性导航系统的测试需求,利用RAID等先进技术,构建了一套图像采集存储系统,解决了多摄像机同步工作、大分辨率图像的高速采集和海量数据实时存储的问题。为了解决多设备之间的数据对齐问题,利用GPS秒脉冲和绝对时标以GPS系统实时时钟为基础,并对Windows系统进行高精度定时产生摄像机的外触发信号,实现了不同设备之间的实时数据采集、对齐。试验表明:该测试系统的配置灵活,同步精度高,具有较好的推广使用价值。

According to the requirement of testing for inertial navigation system,the advanced techniques are advanced,such as RAID,and the image acquisition and storage system are built up,which solves the following problems: the multi-camera synchronization work,the high-speed acquisition of high-resolution images and the real-time storage of mass data.Meanwhile,in order to deal with the problem of data matching among many appliances,the PPS(Pulse-Per-Second) signal of GPS(Global Position System) is used,the UTC(Universal Time Coordinated) concept is adopted,and then the external trigger signal is produced for cameras through high-precision timing of the Windows system,and based on GPS real-time timer system the real-time data acquisition and matching among different appliances are realized.Experiments indicate that this testing system has the advantages of flexible configuration and high-precision synchronization,and also has great promoting and using value.