| 其他摘要 | The 1.6m telescope at Yunnan University is a multi-channel photometric survey telescope(Mephisto) with a diameter of 1.6 meters and a field of view of 3.14 square degrees.During the pilot survey stage of the project, the telescope uses three iKon-XXL CCD commercial single-chip cameras for sky survey observations.The original control software of the iKon-XXL camera is not intuitive enough in the parameter viewing and parameter setting interface, and the functions do not meet all the requirements of the Mephisto telescope in photometric survey, and cannot be integrated into the telescope's Observation Control System,therefore, it is necessary to redevelop the camera control system on the basis of the iKon-XXL camera software development kit.According to the demand of Mephisto telescope in photometric survey, we redeveloped the camera control software under the Windows platform ,designed and developed a set of window interface for Mephisto telescope'camera control system ,which meets the integration of the Observation Control System ,and be able to transmit data in real time.The three parts of the work have been completed as follows.1、Design and realization of camera stand-alone control software.According to the requirements of Mephisto telescope in photometric survey and the software development document of Andor iKon-XXL camera, We have developed a camera stand-alone control software which has several functions ,such as camera connection, camera cooling, camera parameter setting, camera exposure, data acquisition, data saving and data viewing.The test results shown that the camera stand-alone control software has the function of local data acquisition.2、Design and realization of camera control system and integration of the Observation Control System.Through the development of the Observation Control System and the camera control system communication protocol,We realized the integrated control of the observation control system and the camera control system, and then realized the remote control of the camera in the form of Socket communication.In order to view and set the parameters conveniently for the observer，we have developed a graphical interface for the camera control system,from which the functions of local data acquisition and remote data acquisition can be switched through the Remote button.3、Design and implementation of cross-platform secure real-time transmission of observation data. When the camera exposure is over,the observation data should be transmitted to the data center timely so as to it could be timely preprocessed.Therefore, we theoretically analyzed the data volume of the splicing camera and the iKon-XXL camera, and tested the data transfer speed of the two links from the 1.6m telescope dome to the data center.The test results shown that the data transmission speed of the two links meets the theoretical value of the data generated by the two cameras.Furthermore，observation data could be securely transmitted across platforms in real time with the help of SSH remote connection and dynamic detection algorithms.4、Design and implementation a set of remote safety check device for Camera Control System.In order to ensure the safety of operators, telescopes and cameras,we designed a set of remote safety check device for the Camera Control System which was patented and granted;Pyroelectric sensors can tell if someone is performing maintenance on the camera at the dome, the remote safety check device can determine whether the camera can be operated before the camera control system is connected to the camera.The development of the camera control system not only solves the problem of controlling three cameras simultaneously during the multi-channel photometric survey process of the Mephisto telescope, but also provides a unified control solution for telescopes with multiple terminals. |
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