Abstract:The image storage system of optical devices, which have been serving for a long time, have problems of performance degradation and reliability reduction, a new image storage system structure is designed aim at this situation. A sequential control method base on frequency signal is proposed, driving the hardware and software of the image storage system with the frequency signal, generating absolute time by combining second signal, frequency signal and time information from serial port, implements the four independent synchronous data acquisition, two levels of cache mechanism is raised up to ensure the redundant matching of data rate between collection, packaging, and storing, the image transer time error is corrected. Test results show that, the image storage system sequence has been effectively controlled, the data collection and storage is stable and reliable for a long time without losing a frame of image, the accuracy of time synchronization is better than 1ms.
