天文CMOS相机测试平台及控制系统的实现
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摘要
CMOS相机是一种重要的固体成像设备。随着科研级CMOS相机的性能不断提高,现已广泛应用于科研领域。新真空太阳望远镜的成像设备也使用CMOS相机,因此建立一个天文CMOS相机测试系统,对于新购CMOS相机的验收以及现有CMOS相机的定期检测和维护有十分重要的意义。介绍了CMOS相机测试平台的硬件组成,并针对实际测试中对设备控制的需求,以及利用控制器对相应的设备直接控制,提出了基于TCP/IP协议以及串口通信的设计方案,利用C#编程语言设计了一套多线程并行的控制系统软件,实现各设备在局域网内的远程并行控制。通过对设备的运行测试,结果表明,系统能良好地控制各设备的正常运行,满足测试系统集成控制的需求。
CMOS cameras are important solid-state imaging devices. As the performance of scientific CMOS cameras continues to improve, they are now widely used in scientific research. The imaging devices of the New Vacuum Solar Telescope(NVST) are also using CMOS cameras. Therefore, the establishment of an astronomical CMOS camera test system is of great significance for the acceptance of new CMOS cameras and has a high value for the regular detection and maintenance of existing CMOS cameras. This paper describes the hardware components of the astronomical CMOS camera test platform. Taking advantage of the direct control of the corresponding equipment by the controller, a design scheme based on TCP/IP protocol and serial communication is proposed to meet the requirement of equipment control in actual test. A multi-threaded parallel control system is designed by using C# programming language to realize remote parallel control to each device in the LAN. Through the operation test of the equipment, the results show that the system can manage the operation of each equipment and meet the requirement of the integrated control of the test system.
CMOS cameras are important solid-state imaging devices. As the performance of scientific CMOS cameras continues to improve, they are now widely used in scientific research. The imaging devices of the New Vacuum Solar Telescope(NVST) are also using CMOS cameras. Therefore, the establishment of an astronomical CMOS camera test system is of great significance for the acceptance of new CMOS cameras and has a high value for the regular detection and maintenance of existing CMOS cameras. This paper describes the hardware components of the astronomical CMOS camera test platform. Taking advantage of the direct control of the corresponding equipment by the controller, a design scheme based on TCP/IP protocol and serial communication is proposed to meet the requirement of equipment control in actual test. A multi-threaded parallel control system is designed by using C# programming language to realize remote parallel control to each device in the LAN. Through the operation test of the equipment, the results show that the system can manage the operation of each equipment and meet the requirement of the integrated control of the test system.
引文
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[2] 尚媛园,张伟功,宋宇,等.CMOS成像器件性能测试方法的研究[J].激光与光电子学进展,2010,47(5):68-73.
[3] WANG R,XU Z,JIN Z Y,et al.The first observation and data reduction of the multi-wavelength spectrometer on the New Vacuum Solar Telescope[J].Research in Astronomy and Astrophysics,2013,13(10):1240-1254.
[4] European Machine Vision Association.EMVA Standard 1288:standard for characterization of image sensors and cameras[EB/OL].(2016-12-30) [2018-09-20].http://www.wmva.org.
[5] 盆晓敏.基于EMVA Standard 1288的CMOS图像传感器测试系统研究[D].哈尔滨:哈尔滨工程大学,2015.
[6] WANG X Y.Noise in sub-micron CMOS image sensors[D].Southampton:University of Southampton,2008.
[7] 赫英威,李平,吴厚平,等.积分球辐射光源照度均匀性研究[J].应用光学,2012,33(3):548-553.
[8] 陈宇超,金振宇,杨磊.NVST多通道高分辨观测系统软件设计[J].天文研究与技术,2016,13(1):75-81.
[9] CHIOZZI G,GUSTAFSSON B,JERAM B,et al.CORBA-based common software for the ALMA project[C]// Proceedings of SPIE.2012:43-54.