Design And Implementation Of Optical Library System For Mechanical Control

The information age has brought many new problems and long term preservation ofdigital data is being paid more attention by researchers. Magnetic devices are beingreplaced to for backup by the blue-ray optical disk as their huge capacity, low cost andhigh safety. After investigating the constitution and structure of optical library in themarket and analyzing the need of load and unload for the optical disk, this paper hasdesigned and realized a mechanical control system for the optical library based on thestate machine and computer serial port communications techniques.The system could manage the initiation of the optical library, monitoring thereal-time state of optical library, test and correct the location parameters of the driver andgroove and control the mechanical arm to transfer the optical disk quickly, precisely andsafely. The system control module is the kernel of the system and interacts with otherfunctional module such as state monitoring module and data management module.In addition to realizing the basic function, a series job has been completed for theoptimization of the optical library system. First, the load and upload time is shortened byaccelerating the speed of transmission for data and instructions and choosing nearestmoving path for the mechanical arm. Then we try to make the parameters of the opticallibrary more precisely and monitoring the real-time location of the mechanical arm tomake the system more accurate and reliable. At last, the system could make themechanical arm turn to the sleep mode automatically to save energy consumption.Finally, the system could realized its functions in a specific optical library machine.The tests shows that a whole load and upload for the library is about270minutes whichhas gained much speedup than the one before optimization.