Mr. Su Li Profile

Su Li

at Univ of Science and Technology of China

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Proceedings Article | 28 July 2014 Paper

Wireless software update system based on Zigbee for LAMOST

Su Li, Yonggang Gu, Yi Jin, Chao Zhai

Proceedings Volume 9147, 91479L (2014) https://doi.org/10.1117/12.2055052

KEYWORDS: Wireless communications, Computer programming, Telescopes, Optical fibers, Antennas, Error control coding, Astronomical imaging, Telecommunications, Transceivers, Spectroscopy

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Large Sky Area Multi-object Fiber Spectroscopic Telescope - LAMOST, has a 1.75m-diameter focal plane on which 4000 optical fibers are arranged in order to obtain the spectrums of astrometric objects. Each optical fiber is installed on a mechanical unit which is driven by a cell controller. The mechanical units are installed on the focal plane one by one closely with high density, and the focal plane is above-ground, so the cell controllers are very inconvenient to remove and install. Each time when we maintain or upgrade the motor drive system of LAMOST, we need to download new program to the cell controllers. But it always takes a lot of time to take out the cell controllers from the focal plane. So we propose a wireless program-updated technology based on Zigbee which can download the program to the cell controllers without removing and installing. In order to realize the goal, we need to update the FLASH of target controllers without hardware connection. So we transmit the program through Zigbee wireless network which has been used in LAMOST already. After we use the wireless update system based on Zigbee, it is much easier and convenient for us to maintain or upgrade the motor drive system of LAMOST. In this paper we illustrate how to realize the wireless update system from hardware and software.

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