Title :
Fiber positioning control for LAMOST based on ZigBee PRO
Author :
Tongying Li ; Zhenchao Zhang
Author_Institution :
Nat. Astron. Obs., Nanjing Inst. of Astron. Opt. & Technol., Nanjing, China
Abstract :
For observing thousands of celestial bodies simultaneously, 4000 nodes with an alveolate distribution on the focal plate of 1.75m in diameter are used in Large Sky Area Multi-Object Fiber Spectroscopy Telescope (LAMOST). In this paper, a novel fiber positioning control method based on ZigBee PRO was proposed for LAMOST fiber positioning. Compared with traditional control way of wire drive, it can reduce the number of external antenna more than 95%, furthermore, the difficulty of installation was minimized by saving the space on the back of focal plate. ZigBee PRO networking and data communication technology are analyzed and a mesh network is designed based on LM3S9B96, CC2520 and CC2530 to realize localization and reset for 4000 fiber positioning units. The fiber positioning control computer can make the further decision by employing of the feedback information of zero point.
Keywords :
Zigbee; data communication; optical fibre communication; radiotelescopes; wireless mesh networks; CC2520; CC2530; LAMOST fiber positioning unit; LM3S9B96; ZigBee PRO networking; celestial bodies; data communication technology; external antenna; feedback information; fiber positioning control computer; fiber positioning control method; focal plate; large sky area multiobject fiber spectroscopy telescope; mesh network; size 1.75 m; wire drive; zero point; Network topology; Optical fiber cables; Optical fiber devices; Optical fiber networks; Optical fibers; Zigbee; CC2520; CC2530; Fiber Positioning; LAMOST; LM3S9B96; Mesh topology; Stepper motor; ZigBee PRO;
Conference_Titel :
Network Infrastructure and Digital Content (IC-NIDC), 2012 3rd IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4673-2201-0
DOI :
10.1109/ICNIDC.2012.6418742
