Remote monitoring and fault recovery for FPGA-based field controllers of telescope and instruments

摘要

As the increasing size and more and more functions, modern telescopes have widely used the control architecture, i.e.central control unit plus field controller. FPGA-based field controller has the advantages of field programmable, whichprovide a great convenience for modifying software and hardware of control system. It also gives a good platform forimplementation of the new control scheme. Because of multi-controlled nodes and poor working environment inscattered locations, reliability and stability of the field controller should be fully concerned.This paper mainly describes how we use the FPGA-based field controller and Ethernet remote to construct monitoringsystem with multi-nodes. When failure appearing, the new FPGA chip does self-recovery first in accordance with prerecoverystrategies. In case of accident, remote reconstruction for the field controller can be done through networkintervention if the chip is not being restored. This paper also introduces the network remote reconstruction solutions ofcontroller, the system structure and transport protocol as well as the implementation methods. The idea of hardware andsoftware design is given based on the FPGA. After actual operation on the large telescopes, desired results have beenachieved. The improvement increases system reliability and reduces workload of maintenance, showing good applicationand popularization.© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.