LTCS03型起零时控制系统的研制.docx

The The development of The hardwares of LTCS·-03 Launching Time Control System Abstract Launching Time Control System is an important equipment in launching ground． It receives launching signal and generates absolute zero launching time(TO)in launching ground．The zero time is sent to center computer by communicating liner, and the center computer sends it to the measuring and controlling system as a basic time to start programs．At the same time，the system also generate the launching and inculpating sound for controlling and coordinating system which send the sound to all user． The hardwares of LTCS-03 Launching Time Control System are made up of industrial computer,TO generating card，operating platform and liner transit card． TO generating card，as the center of the system，has a smaller size and stronger function and higher trustiness than the older equipment by using Field Programmable Gate Array technology．This card insets the industrial computer in PCI local bus slot．The system can receive 8 launching signals to generate 4 TO signals which can be selected to be sent out． The softwares of LTCS-03 Launching Time Control System are made up of FPGA config software，driver software and ampplication software．FPGA config software realizes all actions of FPGA．The driver software，realising the hard resouce，completes initial and I／O of the hardware，B code decoded and SO on．The amplication software generates TO signal，the bee voice of launching and inculpating，shows the state of all working models，records the state of the system， saves and prints the information of TO realtimly． Key words：Launching Time：FPGA：PCI local bus；TO generating card 插图清单图3—1： 插图清单 图3—1： T 0控制台总体框图 ．5 图3—2： TO形成板接口图 6 图3—3： TO形成板原理框图 7 图3—4： 控制部分电路原理图 9 图4—1： 配置写时序图 11 图4—2： 毫秒微秒计数器的逻辑