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Design and realization of the real-time spectrograph controller for LAMOST based on FPGA
Jianing Wang; Liyan Wu; Yizhong Zeng; Songxin Dai; Zhongwen Hu; Yongtian Zhu; Lei Wang; Zhen Wu; Yi Chen
Source PublicationAdvanced Software and Control for Astronomy II
PagesVol.7019 1P-1-7
Conference Date2008-6-23
Conference PlaceMarseille, France
Funding OrganizationThe International Society for Optical Engineering
A large Schmitt reflector telescope, Large Sky Area Multi-Object Fiber Spectroscopic Telescope(LAMOST), is being built in China, which has effective aperture of 4 meters and can observe the spectra of as many as 4000 objects simultaneously. To fit such a large amount of observational objects, the dispersion part is composed of a set of 16 multipurpose fiber-fed double-beam Schmidt spectrographs , of which each has about ten of moveable components realtimely accommodated and manipulated by a controller. An industrial Ethernet network connects those 16 spectrograph controllers. The light from stars is fed to the entrance slits of the spectrographs with optical fibers. In this paper, we mainly introduce the design and realization of our real-time controller for the spectrograph, our design using the technique of System On Programmable Chip (SOPC) based on Field Programmable Gate Array (FPGA) and then realizing the control of the spectrographs through NIOSⅡ Soft Core Embedded Processor. We seal the stepper motor controller as intellectual property (IP) cores and reuse it, greatly simplifying the design process and then shortening the development time. Under the embedded operating system μC/OS—II, a multi-tasks control program has been well written to realize the real-time control of the moveable parts of the spectrographs. At present, a number of such controllers have been applied in the spectrograph of LAMOST.
KeywordReal-time Spectrograph Controller Field Programmable Gate Array (Fpga) System On Programmable Chip (Sopc) Niosⅱ Intellectual Property (Ip) Stepper Motor Ethernet Network Lamost
Subject Area郭守敬望远镜(lamost) ; 天文光谱仪 ; 自动控制
Document Type会议论文
Recommended Citation
GB/T 7714
Jianing Wang,Liyan Wu,Yizhong Zeng,et al. Design and realization of the real-time spectrograph controller for LAMOST based on FPGA[C]:SPIE,2008:Vol.7019 1P-1-7.
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