luận văn Ứng dụng hệ scada vào hệ thống pha trộn hóa chất - luận văn, Đồ...

8/10/2019 Lun Vn ng Dng H Scada Vo H Thng Pha Trn Ha Cht - Lun Vn, n, Luan Van, Do An

1/34

Lun Vn Tt Nghip Phn 3

Thit K H SCADA Dng WinCC Trang101

PHAN 3NG DNG H SCADA VO H

THNG PHA TRN HACHT

Chng 1: HThng SCADA

I. GII THIU H SCADA.

SCADA (Supervisory Control And Data Acquisition = h thng gimst, iu khin v thu thp d liu) l h thng cho php ngi iu hnhgim st v iu khin cc qu trnh m chng c phn b" trong cc ni xa.

C nhiu qu trnh s dng h thng SCADA nh: thy in, cc khux l v phn phi nc , kh t nhin, v.v...Cc h thng SCADA cho php

cc ni xa lin lc vi phng tin iu khin v cung cp d liu iu khincn thit cho cc qu trnh iu khin. Khi khong cch n cc ni xa tngth cng kh truy cp hn, khi SCADA tr thnh s chn tt nht chongi iu hnh iu chnh v quan st. Khong cch v s xa l hai yut" chnh ci t cc h thng SCAD A .

Cc h thng SCADA hin i c nhiu c tnh tin tin nh: kin trcphn b", c s d liu phn b", giao ti p ha vi ngi s dng (GUI =Graphic User Interface), cc n v o lng t xa thng minh v.v...

H SCADA thng c dng ch tt c cc h thng my tnh c

thit k thc hin cc chc nng sau: Thu thp d liu t cc thit b cng nghip hoc cc cm bin/chuyn i nng lng.

X l v thc hin cc php tnh trn d liu thu thp c.


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Hin th d liu thu thp v d liu c suy ra. Nhn lnh t ngi iu hnh v thc hin gi cc lnh iu

khin n cc thit b ca nh my. X l cc lnh iu khin t ng hoc bng tay ng lc v tin

cy.

Cc h thng nh vy c th c gi bng cc tn khc trong cc tnhhung v cc k ngh khc, nh: DAC (Data Acquition and Control = iukhin v thu thp d liu), DCS (Distributed Control Systems = Cc h thngiu khin phn b), v.v...Tt c cc h thng ny v c bn thc hin cngcc


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MTU

Outputs to RTUInputs from RTU

Inputs from Operator

Hnh 3.1: Cc phn nhp v xut ca MTU.

chc nng. Xut pht t cc cng vic ng dng c th m c s khc bitgia chng cc c im sau:

V tr v s phn b" cc ngun d liu cng nghip (cc thit bnh my).

Lng d liu c thu thp. Tc thu thp d liu. Cc lnh iu khin c thc to ra mt cch t ng

h thng ny mc no. Kiu tnh ton v v tr m cc tnh ton v cc tc ng iu

khin s c thc hin.

H thng SCADA c 4 phn t chnh: ngi iu hnh (operator), phnt thit b u cui chnh MTU (MasterTerminal Unit), truyn

v phn t thit b u cui xa RTU (RemoteTerminal Unit). Ngi iuhnh thc hin iu khin qua thng tin c m t trong khi hin th hnhnh VDU (Video Display Unit). Phn nhp ca h thng thng xut pht tngi iu hnh qua bn ph m ca MTU. Thng tin t cc ni xa c MTUgim st v hin th cc thng tin ny cho ngi iu hnh . Quan h giaMTU v RTU tng t nh gia ch v t.

MTU (Master Terminal nit)

Outputs to Other Devices


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RT

Outputs to MTUInputs from MTU

Inputs from Field Devices

Hnh 3.2: Cc phn nhp v xut ca RTU.

Trung tm ca h thng l MTU. Nhim v ca MTU l khi ng ttc cc cng vic: truyn thng lin lc, thu thp d liu, lu tr thng tin, githng tin n cc h thng khc, v giao tip vi ngi iu hnh. S khc

bit chnh gia MTU v RTU l MTU khi ng o tt c cc truyn thngbng lp trnh gia n v con ngi. Hu ht tt c cc truyn thng c thchin bi MTU. MTU cng lin lc vi cc thit b ngoi vi khc nh: monitor,my in hoc cc h thng thng tin khc. Thnh phn giao tip c bn vingi iu hnh l monitor m trong hin th cc valve, bm v.v...Khi dliu n thay i th mn hnh c cp nht.

** RTU (Remote Terminal Unit):

RTU thu thp thng tin xa t nhiu thit b nhp nh cc valve, bm,

bo ng (alarm), ng h o (meter)...Ch yu d liu dng analog (s"thc), digital (on/off), hoc d liu xung (nh m s" vng xung ca ccmeter). Nhiu RTU gi thng tin thu thp c trong b nh v i yu cu tMTU truyn d liu. Cc RTU hin i hn c cc my vi tnh v cc PLCsc th iu khin trc tip qua a im t xa khng cn nh hng caMTU.

Outputs to Field Devices


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CPU ca RTU nhn lung d liu nh phn theo giao thc truyn thng.Cc giao thc c th m rng nh TCP/P (Transmission Control Protocol andInternet Protocol) hoc cc giao thc ring ring. Nhng lung d liu tngqut cha cc thng tin c t chc theo m hnh 7 lp ISO/OSI. M hnhOSI c s dng t tiu chun cho cch trao i thng tin vi cc giaothc, truyn thng v d liu. RTU nhn thng tin ca n nh vo m nhndng ca n trong d liu truyn. D liu ny c din dch v CPU iukhin tc ng thch hp ti ch.

II. CC C TNH CHNH CA H THNG SCADAHIN I.

Kin trc h thng:

Hin nay cc h SCADA th h mi c xy dng theo kin trc phnb", trong cng sut ca my ch c phn b" trn mt s"b x lc ni cngvi nhau bng mng cc b (LAN). Trong mi b x l cmt trch nhim nht nh nh : thu thp v x l, to hin th, thit lp boco v.v... v mt s" b x l dng d phng.

Nh vo cc cng ngh din rng (WAN), h thng SCADA c thcphn b" trn mt min a l rng.

H thng c thit k theo h thng m v c cu server_client. Kin trc tiu biu ca mt h SCAD A phn b:

Hnh 3.3: Kin trc tiu biu ca mt h SCADA phn b.

Trong :

IOS = Data Input/Output Module.


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HMI = Human_Machine Interface Module.

HDC = Historical Data Collection and Storage Module.

GW = Gateway for inter_LAN communications.APPS = Application Calculations and Processing Module.

> Cc b x l my tnh: s dng cc vi x l tin tin.

> Thit b giao tip gia ngi_my (HMI = HumanMachine

Interface)SCADA trang b cc VDU (Visual Display Unit = n v hin th) y

ha c km mouse, trackball jottick v bn phm. Cc nt iu khinn cng c thay th bng cc biu tng trn mn hnh c tc ng bngchut hay bn phm. Cc phng tin ny gip cho ngi iu hnh:

Nhanh chng hon i gia cc mn hnh hin th. Nhanh chng xem c chi ti t cc thng tin.

To v sa i cc mn hnh hin th trc tip h thng. C nhng hiu ng c bit tng kh nng phn bit r d

liu (v d cc mu khc nhau cho cc l khc nhau trong mtng ng dn du).

Vi cc VDU hot ng trong mi trng Windows hay X-Windows,

ngi iu hnh cng c th:

Xem trn cng mt VDU nhiu mng thng tin m thng tri ra

trn nhiu mn hnh hin th. Trn cng mn hnh, truy cp c cc d liu nm ri rc theovng hoc cc d liu thuc cc c s d liu khc nhau.

Do , nhng phng tin HMI hin i cho php ngi iu hnh truycpslngthng tin ln d hn v nhanh hn.

> Cc n v o lng t xa RTU (Remote Telemetry Unit)


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thao tc vn hnh cng nh quy lut hot ng v iu khin h thng. H thng pha trn bao gm: 3 loi cht lng cha sn 3 bn cung cp,

dn qua bm v valve trc khi vo bn pha trn, mt bn cha cht lngsau khi trn, v mt ng c dng khuy trn.

Do khng c cc sensor bo mc cht lng, sensor o lu lng nnphn lp trnh iu khin ch yu da vo b nh thi Timer v c im cacc valve, bm. Tuy vy, n vn cho kt qu chp nhn c.

Phn m hnh gm: 3 bn cung cp mi bn cha c ti a l 4.5 lt,bn dng cho pha trn cha ti a 9 lt , bm c tc 1 lt /30giy, ng c,cc valve v cc rle ng ngt.

2.Hot ngca h thng.

Khi nhn nt RUN, 3 van cung cp A, B, c v bm c tc ng,cho php cht lng t 3 bn chy vo bn pha trn theo t l nht nh. Chnghn, cht A: 60%, cht B: 25%, cht C: 15%. Khi van cui cng (van A) ngli th ng c bt u hot ng vi thi gian bng Vz thi gian m van A.ng c dng, lm tn hiu kch bm v van x hot ng (thi gian x bng

tng thi gian 3 van cung cp nu cc bm c cng tnh cht). Sau khi xxong tc l mtln trn hon tt, b m s" thng tng ln 1. ng thi delay 5s trckhi h thng lp vng tr li. V c th tip tc cho n khi ta nhn ntSTOP th dng. c bit khi ng c ang quay hoc khi van x ang hotng, ta c th nhn nt PAUSE, ton b h thng s dng li cho n khinhn PAUSE ln na. H thng tip tc hot ng tr li vi gi tr thigian lu gi trong b nh. Vi chc nng ny ca nt PAUSE, h thngca ta s hot ng linh hot hn ty vo mun ca ngi iu hnh.

LU gii thut ca h thng pha trn ha cht:


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1 2

Nhn Run


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Gin xung v qu trnh hot ng ca h thng:

M van x


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Cch vn hnh:

C hai cch vn hnh h thng: iu khin bng cc cng tc vt l (gilp lm nt nhn) hoc iu khin trn my tnh nh phn mm WinCC.

Tn hiu lnh

tA

Van A Van B tR

Van c

tcng c

Van x t\1

D


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as

Para. . I Last change I

01/05/02 0..

01 /05/02 0..

01/08/021..

01/08/02 0..MD50

MW40 12/18/01 1.

II. TO CC GIAO DIN KT Ni BANG WINCC.

1. Cc tags v nhm tag to trong chng trnh. Cc nhm tag gm c: nhm tag iu khin, nhm tag thi

gian thc thi v nhm tag th tch. Cc tag c lp: tag gi tr t, tag s" thng.

Q'Control Centei - [An]File Edit View Editors Jools Help

1 1^1B ^ An

j~# Computer EBSH Tag Management El

Internal tags ;il-'| SIMATIC S7 PROTOCOL

SUITE

B J| MPI ____________

B *-> PLC_WinCC

DIEUKHIEN

THOIGIANTHUCTHI L- 1

THETICH PROFIBUS

Industrial Ethernet Slot PLC

_ TCP/IP

IS .1? Data TypesName

^ DIEUKHIEN Tag group

1 THOIGIANTHUCTHI Tag group ^THETICH Tag group

~ t giatridat Floating-point num..

sothung U nsigned 16-bit v...

Cc tags trong nhm tagiu khin:


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D

THOIGIANTHUCTHI

*Control Center - [An]File Edit View Editors Tools Help

*1

Cc tags trong nhm tag thi gian thc thi

Control Center - [An]

File Edit View Editors Tools Help

fir tf|B ^ An

!-# Computer B iH Tag

Management S--3?

Internal tags

i f SIMATIC S7 PROTOCOL SUITE B

U] MPI

B-kj-PLC.WinCC h- 1 DIEUKHIEN

^r

1 THETICH PROFIBUS Industrial Ethernet Slot

PLC TCP/IP B Data Types S Editor

-?rfiranhins Dftsinnsr

Cc tags trong nhm tag th tch:

ZjVarA Unsigned 16-bit v... MW14"iVanB Unsigned 1 G-bit v... MW20~lVanC Unsigned 16-bit v... MW26"iDonaCo Unsigned 16-bit v... MW32"lVanXa Unsigned 16-bit v... MW38

ara... Name

VPe

H I Para... I Last change |Name

"l Reset

IJRUN

liSTOP

~~i pause

Binary Tag

Binary Tag

Binary Tag

Binary Tag

M0.3

MO.O M0.1

M.2

01/05/02 0..

01/05/02 0..

01/05/02 0..

01/05/02 0..

B ^ AnjComputer $11 Tag

Management El .n?

Internal tags

B | SIMATIC S7 PROTOCOL SUITE B J|MPI

PLC.WinCC 1 DIEUKHIEN

1 THOIGIANTHUCTHI i- 1

THETICH || PROFIBUS IBIndustrialEthernet Slot PLC iD TCP/IP


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HxJ

LESName_j thetichA,~ i thetichB ~ i

thetichC ~1

thetichbinhchua ~~i

thetichhienthi

*Conlrol Center - [An]File Edit View Editors Tools Help

DB ^ An

Computer El'-fljj Tag Management 0- Internal tagsH | SIMATICS7 PROTOCOL SUITE - I

MPIPLC.WinCC

DIEUKHIEN

I- 1

THOIGIANTHUCTHI

THETICH PROFIBUS

Industrial Ethernet

Slot PLC TCP/IP 0

Data TypesE-D Editor

-*j- Graphics Designer o

Alarm Logging JJ TagLogging B Report Designer

2. Cc giao din cho chng trnh.

a. Mn hnh chnh:

y l mn hnh tng qut cho php lin kt vi tt c cc hnh trongchng trnh. Bao gm cc nt iu khin: Gii thiu, Thng tin, iu

khin, M hnh, Xem d liu, Thu thp, th, Thng bo,Thot.

Mi nt c nhn s gi n tng hnh c ni dung tng ng. Ringvi nt Thot, khi nhn s thot khi WinCC RunTime.


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WinCC-Runlime

C: \An_WinCC\G f aCS \M ain. pdl I --- 1 -- r

iu Khin

BUKemD Liu

Thu Thp

Thi

b.Mn hnh Gii thiu

Mn hnh ny cung cp mt on Video gii thiu v cng ngh vthnh tu ca hng Siemens.


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-l X

rTnR

I --- 1 --- 1

WinCC-Runlime -

II

Tr v

C:\An_WinCC\GraCS\GIOITHIEU.pdl

c. Mn hnh Thng tin

Cho cc thng tin v tn ti v ngi thc hin.


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M Hnh

I ----- 1

# WinCC-Runtime

v>;LUN VN TT NGHIPT ng 97

1/08/p2 11:08:1PM '4\;w THIT K H SCADA DNG WINCC

SV: Trn Th An

iu Khin

C: \An_WinCC\G raCSVTHONGTIN.pdl

d. Mn hnh iu khin

Bao gm : Mt I/O field: cho php t vo s" lt cn pha trn. Gi tr

ny c th ln n 999.999 (s" thc) nhng thc t do bncha c


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dung tch l 9 lt, v mi bn cung cp c dung tch l 4.5 lt,

nn mi ln pha trn ch cho php ti a l 7 lt. Do , nu

t qu gi tr ny, mt message s to ra thng bo ngivn hnh t li gi tr cho thch hp.

Nt nhn Run cho chy chng trnh. Nt nhn Stop: dng chng trnh. Nt nhn Reset: xa b m s thng v 0. Cng tc Pause: cho php dng tm thi chng trnh (cc

nt nhn Pause ngoi thc t chnh l cc cng tc).

0-WinCC-Runtime -

C: \An_WinCC\G raCS Vdieukhien. pdl

GI TR T:

RUN

STOP

RESET

Th

PAUSE Tr V

2.500 (L

M Hnh

Thu Thp


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-JjS|2


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f. Mn hnh Xem d liu

Cc d liu c quy ra thi gian d dng theo di thi gian hot ng

ca cc van v ng c ng vi mi gi tr t khc nhau. ng thi ta quan stc s" thng pha trn.

,# WinCC-Runtime -

Thi gian thc thi van A 2.000

Thi gian thc thi van B 2.000

Thi gian thc thi van c 2.000

Thi gian thc thi motor 0.000

Thi gian thc thi van x 0.000

m s" thng 5.000

Tr V M Hnh Thu Thpi u Khi n

C: \An_WinCC\G raCS \dulieu. PD L


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Thit K H SCADA Dng WinCC TrangOl

na

g. Mn hnh Thu thp

y l mn hnh quan trng cho php ta thu thp d liu t qu trnh.

V cng l mt trongba chc nng chnh ca h SCADA.Ta thu thp cc gi tr bng s" c th theo dng bng (Table).

AWinCC-Runtime -

Jj m H a M

Date/Time thetichhienthi thetichA thetichB thetichC I thetichbinhchua1/10/02 9:21 49 0.400000 1.366667 0.500000 0.233333 2.5000001/10/02 9:21 49 0.5Q0000 1.333333 0.466667 0.200000 2.5000001/10/02 9:21 50 0.500000 1.333333 0.466667 0.200000 2.5000001/10/02 9:21 50 0.600000 1.300000 0.433333 0.166667 2.5000001/10/02 9:21 51 0.600000 1.300000 0.433333 0.166667 2.5000001/10)02 9:21 51 0.7Q0000 1.266667 0.400000 0133333 2.5000001/10/02 9:21 52 0.7Q0000 1.266667 0.400000 0.133333' 0.000000

1/10/02 9:21 52 0.800000 1.233333 0.366667 0.100000 2.5000001/10/02 9:21 53 0.800000 1.233333 0.366667 0.100000 0.0000001/10/02 9:21 53 0.900000 1.200000 0.333333 0.066667 2.5000001/10/02 9:21 54 0.9Q0000 1.200000 0.333333 0.066667 2.5000001/10/02 9:21 54 1 0Q0000 1.166667 0.300000 0.033333 0.0000001/10/02 9:21 55 1.000000 1.166667 0.300000 0.033333 2.5000001/10/02 9:21 55 1.100000 1.133333 0.266667 0.000000 2.5000001/10/02 9:21 56 1.100000 1.133333 0.266667 0.000000 2.5000001/10)02 9:21 56 1.166667 1.100000 0.233333 0.000000 2.5000001/10/02 9:21 57 1.166667 1.100000 0.233333 0.000000 2.5000001/10/02 9:21 57 1.233333 1.066667 0.200000 0.000000, 2.500000

------------------------------------------------------------------------------------Column in front thetichhienthi Update started..

ISK

C: \An_WinCC\G raCSVthuthap.pdl


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h.Mn hnh th:

Mn hnh ny c chc nng ging mn hnh Thu thp, ngha l cng

thu thp cc gi tr t qu trnh nhng theo dng th (Trends).

WinCCRuntime

JLl JL i |JH

[

|J j

tt

1/10/02 21:35:56.6 21:36:26.6 21:36:56.6 21:37:26.6 21:37:56.6 21:38:26.6 21:38:56.6 timt


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i. Mn hnh Thng Bo

Thc t chng trnh khng dng cc cm bin cnh bo v: mc y,mc cn, s c" my bm v.v...cho nn mn hnh ny ch m phng, khng pdng cho chng trnh. Tuy nhin, em vn thc hin giao din ny khaithc ht chc nng ca WinCC.

# WinCC-RuntimeHal s l i l | [ s=l l t Al *kl shl Hi ill

NumljDate [Time |Message text |Point of error - 1 2 08/01/02 21:39:28 tank empty tank level _2 1 08/01/02 21:39:32 fill level exceeded tank level34

56 1 08/01/02 21:39:56 fill level exceeded tank level17 1 1 08/01/02 21:39:56 fill level exceeded tank level8 2 08/01/02 21:40:00 tank empty tank level910 2 08/01/02 21:40:00 tank empty tank level11 1 08/01/02 21:40:04 fill level exceeded tank level12 1 08/01/02 21:40:04 fill level exceeded tank level13 3 08/01/02 21:40:08 pump defective tank level1415 I I

1/8/0222:52 PM

Th Tr v Thu ThpXem D Liu

C: \An_WinCC\G raCS Mhongbao. pdl


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III. LP TRNH CHO H THNG BANG SIMATIC

S7-300.

1.c tnh thit b.

Chng trnh s dng CPU 314 FM.

a. Cu hnh:

> Kch thc module:WxHxD : 160 X 125 X 130 (mm)Hoc : 6.24 X 4.88 X 5.07 (in.)

a ch cc ng vo, ra c tch hp trong CPU 314 TFM.

Cc knh c bit ny c chc nng: b m, o tn s", b m A/B, o

v tr. Cu hnh in:

Ngun cung cp : 24VDC. Dng: 1A.

Vo/ ra a ch20 ng vo

s"124.0 n 126.3.

c 4 knh c bit: 126.0 n 126.3.

16 ng ra s' 124.0 n 125.7.

4 ng vo tng t 1 ng ratng t

128 n 135. 128 .


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hoc: 25 chn-25 chn:

Cng sut: 16W. Mt s" c tnh khc:

24 Kbytes RAM. 40 Kbytes b nh np tch hp trong EPROM, khng cn card

b nh.

Tc truyn thng: 19.2 Kbps; 187.5 Kbps.

Cp kt ni MPI:

MPI ( multi-point interface): l phn giao tip ca CPU dng ktni, v d nh cc thit b lp trnh, c gi l giao tip a im t nhiuthit b m c th truy cp CPU thng qua giao tip ny. Ni cch khc, CPUvi giao tip a im c th ni mng m khng cn thm module no khc.

Cp kt nigia CPU 314 IFM v WinCC (my tnh) c th: 9 chn -9

chn.

WinCC Station

Controller

9 Pin Connector 9 Pin Connector


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ControllerWinCC Station2. Gii thiu chng trnh:

a. Cc khi s dng trongchng trnh:

Khi OB1:

l khi t chc chngtrnh, dng gi cc

khi khc: khi FBI,FC1, FC2.

Khi FBI:

lp trnh hot ngcho 3 van cung cp A,

B, c ng vi 3 khi dliu DB1, DB2, DB3.

Khi FC1: lp trnh hot ng cho ng c.

Khi FC2: lp trnh hot ng cho van x.

Khi FC3: dng quy ra th tch t cc gi tr thi gian.

Khi FC5: kch Timer ng c chy tip sau khi nhn li nt

Pause.

Khi FC6: kch Timer van x chy tip sau khi nhn li nt Pause.

Khi FC8: load gi tr ca Timer ng c vo nh MW30.

Cc khi FC10, FC11, FC12, FC13, FC14: xa cc nh cha gi

tr thi gian ca cc van v ng c.

Cc khi FC15, FC20, FC21, FC23: xa cc gi tr th tch v

0.

Khi FC22: tnh th tch cn hin th.

Cc khi DB1, DB2, DB3: cha d liu cho 3 van cung cp A, B, c

tng ng.

b. Phn lp trnh:


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(xem ph lc)

Chng 3: KtQuThcHin V HngPht

TI T-V rf1'

Trin Tai.

1.Kt qu thc hin.

Chng trnh thc hin chy n nh, ng theo tng ca ngilp trnh. H thng hot ng cho sai s" khng ng k. Ngoi cc chc nng

c bn cho mt h thng pha trn n gin hot ng, em thc hinthm mt s tnh nng khc d dng cho vic iu khin v gim st nhto thm nt Pause, b m s" ln pha trn V.V....

Ta c th iu khin h thng bng hai cch: iu khin bng cc cngtc vt l hoc iu khin trn my tnh thng qua cc giao din c thchin bng lp trnh WinCC. Trong WinCC, ta c th kt ni v ly d liu tcc nh, trng thi cc bits... thc hin iu khin, gim st v thu thpd liu.

Nhng kh khn gp phi: Nhim v ti l thit k h SCADA cho

h thng pha trn ha cht. Tuy c v l ti kh c in, nhng thc chts dng cc ngn ng lp trnh hon ton mi. Do vy, vic thc hin tich da vo cc ti liu tm hiu ngn ng lp trnh, trong thi gian cho phpchc chn s khng trnh khi thiu st. Nhng nhng g lm c, em


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p


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Thit K H SCADA Dng WinCC Trang 128

ng gn nh y cc yu cu cho ti bao gm: iu khin, gims t v thu thp d liu theo ng ngha ca mt h SCADA.

Tn ti hn ch: nt Pause c tc dng khi ng c hoc van x anghot ng, v ch p dng c cho mt van cung cp ( do tnh cht ca lnhgi CALL trong khi OB1, van thc hin c l van c gi trc trongchng trnh).

2. Hng pht trin ti.

Trn y, v c bn em thc hin c chng trnh ng dng choh thng pha trn cht lng. Nhng kh ng dng c trong thc t snxut, bi v iu kin thc ti cn thiu thn thit b. c th p dng ctrong cng nghip, trong cc h thng dy chuyn t ng vi quy m snxut ln th cn phi c cm bin bo mc, cm bin o lu lng, tc dng chy hay cc cm bin bo ng, bo s c my bm v.v...Khi chng trnh s thc hin hon chnh hn. Tuy nhin cng c th pht trinda theo chng trnh m em thc hin.

Hng pht trin c th cho i tng l cc ngnh sn xut, ch binthc phm; ngnh pha ch ha cht, hay cho cc h thng pha trn xng dut ng, pha nht v.v...

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