Title: 1. Field Instrumentation
1??????????????????
1. Field Instrumentation 2. Remote Station 3.
Communication Network 4. Central Monitoring
Station (CMS)
2??????????????????
1. Field Instrumentation
?????????????? ??????????????????????????????????
??????????????????????????????????????????
??????????????????? Physical Parameter ???? Fluid
Flow ,Velocity,Fluid Level ??????? Electrical
Signal ???? Voltage ???? Current
??????????????????????????????? Remote Station
Equipment ???????????????????????? Analog ???
Digital
3??????????????????
2. Remote Station
?????????????????????????????????????????????????
???? ???????????????????????? SCADA ?????????????
Remote Terminal Unit (RTU)???? Programmable Logic
Controller (PLC) ????? RTU ??? ???????????????????
???????????? Field Sensor ??????????????????????
Controller ?????? ???????
4??????????????????
2. Remote Station
Remote Station ???????? 2 ????????? 2.1 Single
Board input ??? output ???? Fixed Nmber
??????????????????????????????????????????????????
???? 2.2 Modular Board ???????????????????
Remote Station ??? ??????????????????
5??????????????????
3. Communication Network
?????????????????????????????????????????????????
?????????? ???????????????????????????????? ????
????????? ??????????
6??????????????????
4. Central Monitoring Station (CMS)
???????????????????? SCADA ??????????????????????
????????????????????????????????????????
?????????? ????????? ??? ?????????
7??????????????????
4. Central Monitoring Station (CMS)
??????????????????????? Multitasking ???
??????????? a. ???????????????????????????????????
b. ???????????????????????? c.
???????????????????????????????????? d.
???????????????????????????????????? e. ????????
?????????? ???????????? f. ?????????????????????
???????????? g. ????????????????????????????????
8???????????????????
?????????????????? SCADA ????????????????????????
??????????????????? ??? ???? SCADA
??????????????????????????????????
??????????????????????????????????????????????????
??????????? ??????????????????????????????????????
?????????????? ???? ?????????? microwave
???????????????????????