1. Taw qhia
Silos yog cov chaw cia khoom loj thoob plaws hauv kev ua liaj ua teb, tshuaj lom neeg, khoom siv hauv tsev, kev pub noj thiab kev lag luam yas. Los ntawm cov nplej, cement thiab ntxhia pob zeb mus rau cov yas pellets thiab ntau yam kev lag luam hmoov, bulk solids ua rau feem ntau ntawm raw cov ntaub ntawv cia rau niaj hnub ntau lawm cov nroj tsuag. Ua raws li qhov tiag - lub sijhawm cov khoom siv hauv cov silos yog qhov tseem ceeb rau kev tswj cov khoom lag luam kom raug, kev tswj kev noj zaub mov ruaj khov thiab kev tsim khoom zoo.
Qhov ntawd tau hais tias, kev ntsuas qib rau cov khoom siv loj tau ntev ua rau mob taub hau loj rau ntawm -cov kws tshaj lij thiab pab pawg muag khoom thoob ntiaj teb. Tsis zoo li cov kua uas tsim ib qho chaw tiaj tus, qhov chaw ruaj khov, cov khib nyiab loj tuaj yeem ua rau muaj kev nyuaj siab ntawm - teeb meem ntawm qhov chaw. Flying plua plav, qhov chaw tsis sib xws, cov khoom siv txuas thiab nas -holing hauv silos feem ntau ua rau cov pa sensors tsis zoo. Tau ntau xyoo ntawm kev sib txuas lus ntawm cov neeg siv khoom, peb tau pom ntau lub tsev lag luam cuam tshuam nrog kev ua haujlwm tsis tu ncua ntawm lub sensor, kev nyeem tsis raug thiab cov nqi zog ntxiv los ntawm kev soj ntsuam cov kev daws teeb meem tsis zoo.
Hnub no,radar theem transmitterstau dhau los ua - rau kev xaiv rau kev ntsuas kev lag luam nyuaj. Ib lo lus nug peb tau nug ntau zaus los ntawm cov neeg yuav khoom thoob ntiaj teb yog qhov tseeb: cov radar sensors puas tuaj yeem xa cov khoom siv tau zoo rau cov khoom siv hauv silos? Kos rau ntawm peb lub sijhawm ntev - lub sijhawm kev teeb tsa kev teeb tsa, tom qab- muag cov ntaub ntawv txhawb nqa thiab tiag- ntiaj teb qhov project, peb yuav rhuav tshem radar qhov kev ua tau zoo, qhov zoo thiab qhov tsis zoo, ntxiv rau cov kev xaiv siv tau rau kev ntsuas qib qib hauv silo hauv phau ntawv qhia no.
2. Cov teeb meem tseem ceeb ntawm Kev Ntsuas Cov Khoom Siv Hauv Silos
Txhawm rau nkag siab tias yog vim li cas ntau tus qauv ntsuas tsis ua haujlwm nyob rau hauv qhov chaw ib puag ncig, cia peb taug kev los ntawm qhov tshwj xeeb cuam tshuam los ntawm cov khib nyiab ntau. Cov teeb meem no tshwm sim ntawm -qhov teeb meem ntawm qhov chaw yog qhov laj thawj tseem ceeb ntawm kev ntsuas qhov yuam kev thiab cov khoom siv tsis xav tau poob qis.
2.1 Hnyav thiab pheej hmoo plua plav
Thaum cov ntaub ntawv raug thauj mus rau hauv lossis tawm ntawm silos, cov plua plav loj loj yuav ua rau tag nrho qhov chaw sab hauv. Cov hmoov me me tuaj yeem thaiv cov khoom siv kho qhov muag, nqus cov suab tsis zoo thiab ua kom ruaj khov rau qhov chaw sensor. For most traditional detection devices, dense floating dust is the top threat that leads to total signal loss.
2.2 Qhov chaw tsis sib xws thiab cov khoom lub kaum sab xis ntawm Repose
Cov kua dej ib txwm nyob rau hauv qhov chaw kab rov tav, tab sis cov khib nyiab ntau ib txwm tsim cov kab nqes tom qab sib sau ua ke. Qhov no yog li no -hu ua lub kaum sab xis ntawm repose yuav hloov thaum lub sij hawm pub mis thiab tawm mus. Qhov chaw tsis tu ncua ua kom pom cov cim qhia nyob rau hauv txhua qhov kev qhia, ua rau nws nyuaj rau cov sensors zoo tib yam los xauv rau hauv qhov chaw nyob ruaj khov rau kev suav.
2.3 Silo Bridging thiab Rat-Holing
Cov ntaub nplaum nplaum los yog ultra- cov hmoov zoo feem ntau tsim cov choj hollow los yog nqaim hollow channel hauv silos thaum tso tawm. Nyob rau hauv cov ntaub ntawv no, sensors yuav tsuas ntes qhov saum npoo ntawm cov khoom siv choj, es tsis yog cov khoom siv tiag tiag hauv qab no. Cov ntaub ntawv cuav no yuav cuam tshuam cov khoom siv sijhawm thiab tseem ua rau muaj kev cuam tshuam ntau lawm.
3. Cov kev txwv ntawm cov tsoos Silo Level Sensors
Ua ntej radar thev naus laus zis tau txais txiaj ntsig dav dav, cov chaw tsim khoom tau tso siab rau ntau lub suab nrov rau kev saib xyuas qib silo. Txhua yam tuaj nrog pom tseeb qhov tsis zoo thaum ntsib cov kev ua haujlwm hnyav uas tau hais los saum no.
Ultrasonic qib sensors yog nrov rau lawv cov nqi qis thiab yooj yim installation, tsis tau lawv tag nrho nyob ntawm lub suab yoj kis tau tus mob. Plua plav absorbs acoustic signals hnyav, ua rau tsis muaj zog echoes thiab wildly fluctuating nyeem. Hauv silos nrog cov hmoov av tuab, ultrasonic sensors tsis tshua muaj peev xwm khiav ruaj khov rau ntev - siv sijhawm.
Rotary paddle qib keyboards thiab plumb bob sensors tsuas yog tsim los rau qib siab / qis qis, es tsis txhob txuas ntxiv tiag tiag - lub sijhawm taug qab. Rotary paddles nquag tau jammed los ntawm cov khoom khib nyiab, thaum cov kav dej bob cables nquag tawg thiab cuam tshuam kev puas tsuaj los ntawm cov khoom poob. Ob leeg yuav tsum tau ua ntu zus ntawm - kev tshuaj xyuas qhov chaw thiab hloov qhov chaw.
Capacitance qib sensors yog lwm qhov kev sib cuag -style xaiv. Lawv cov kev sojntsuam yuav tsum nyob rau hauv kev sib cuag ncaj qha nrog cov khib nyiab ntau, yog li cov plua plav thiab cov hmoov nplaum nplaum ua rau ntawm qhov chaw. Kev ntsuas me ntsis drift yog qhov yuav tsum tau zam, thiab kev tu phau ntawv nquag ua haujlwm txhua hnub rau cov tswv cog qoob loo.
4. Vim li cas Radar Qib Transmitters hloov mus rau cov khoom siv ntsuas
Radar theem transmittersua haujlwm raws li microwave electromagnetic yoj thev naus laus zis, uas muaj qhov zoo ntawm lub suab tsis zoo thiab cov teeb liab kho qhov muag. Microwaves muaj kev nkag tau zoo thiab cov plua plav zoo heev, thiab lawv qhov kev ua tau zoo yuav tsis cuam tshuam los ntawm huab cua ceev lossis tshem tawm cov khoom zoo.
Microwave signals taug kev ncaj nraim los ntawm cov plua plav ntab hauv cov silos yam tsis muaj teeb meem pom tau. Txawm hais tias ib txheej nyias ntawm cov plua plav nyob ntawm lub kav hlau txais xov, nws yuav tsis thaiv cov teeb liab kis tau tus mob txoj kev nws ua rau ultrasonic lossis optical li. Tsis tas li ntawd, microwaves tuaj yeem tsim qhov kev xav ruaj khov ntawm cov khoom siv. Txawm hais tias cov khoom siv yog tiaj tus lossis nqes hav, cov radar transmitters uas tsim nyog tuaj yeem ntes cov suab nrov nrov thiab suav cov ntaub ntawv raug.
Lwm qhov zoo dua yog cov qauv siv tshuab. Radar sensors tsis muaj qhov txav ntawm txhua qhov, yog li tsis muaj kev pheej hmoo ntawm kev sib tsoo, tawg lossis tawg los ntawm cov khoom poob. Qhov kev tsim no ua tau zoo txo qis cov khoom siv tsis ua haujlwm thiab ntev - cov nqi kho mob, zoo kawg nkaus ua raws li qhov kev thov rau 24/7 txuas ntxiv ntawm kev lag luam silos.
5. Tsis yog-Kev Sib cuag vs Guided Wave Radar rau Silo Applications
Ib yam li kev ntsuas qib kua, radar qib transmitters rau silo siv feem ntau yog muab faib ua ob pawg: tsis yog -hu rau FMCW radar thiab coj yoj radar. Txhua hom haum qhov sib txawv ntawm qhov sib txawv, cov khoom siv thiab cov plua plav ntom ntom.
Tsis yog-hu rau FMCW Radar yog qhov kev siv dav tshaj plaws rau kev loj thiab nruab nrab- silos loj. Ntawm txhua tus qauv, 80GHz siab- zaus radar sawv tawm tshaj plaws. Nws yog tsim nrog lub ultra- nqaj nqaj kaum sab xis, uas ua tau zoo kom tsis txhob muaj cov teeb meem tsis tseeb uas cuam tshuam los ntawm cov phab ntsa silo, sab hauv kev txhawb nqa ncej thiab cov khoom siv. Nws ua haujlwm zoo rau cov nplej, yas pellets, ntxhib ore thiab lwm yam ntaub ntawv nrog cov hmoov av zoo tib yam. Txij li thaum tsis muaj kev sojntsuam txuas mus rau hauv lub silo sab hauv, lub sensor yuav tsis raug ntaus lossis hnav los ntawm cov khoom poob. Rau silos siab dua 10 meters, tsis yog{11}}kev tiv tauj radar yog ib txwm peb cov lus pom zoo.
Guided Wave Radar siv tus pas nrig lossis cable sojntsuam los coj cov teeb liab microwave. Nws ua tau zoo dua hauv cov silos me me lossis qhov chaw uas muaj plua plav hnyav heev thiab ultra- hmoov zoo. Qhov kev sojntsuam tshwj xeeb ua kom cov teeb liab sib kis tau ruaj khov thiab tsis tshua muaj kev cuam tshuam los ntawm cov khoom siv tsis tu ncua. Txawm li cas los xij, peb tsis xav kom siv nws rau silos khaws cov khoom loj, tawv tawv. Cov khoom ntog hnyav tuaj yeem khoov lossis ua rau qhov kev sojntsuam puas thaum lub sijhawm. Nws yog qhov tsim nyog rau cov hmoov cement, hmoov zoo thiab cov xov xwm zoo sib xws hauv qhov ntsuas ntawm 10 meters.
6. Cov tswv yim xaiv thiab kev teeb tsa rau cov neeg yuav khoom thoob ntiaj teb
Tom qab tuav ntau pua ntawm cov phiaj xwm kev sib tw thoob ntiaj teb, peb tau sau cov txheej txheem ua tau zoo los pab cov neeg yuav khoom txawv teb chaws kom tsis txhob muaj qhov yuam kev ntawm kev yuav khoom thiab ua rau qhov ua tau zoo tshaj plaws ntawm radar.
Ua ntej, qhia meej cov khoom siv thiab cov silo qhov ntev ua ntej. Xaiv80GHz tsis yog -nrog radarrau loj silos, coarse hais thiab ib txwm plua plav tej yam kev mob. Yog tias koj ua haujlwm nrog ultra- hmoov zoo, hmoov av hnyav thiab me me - nplai silos, coj yoj radar yuav xa cov ntawv nyeem ruaj khov dua.
Qhov thib ob, ua tib zoo mloog rau cov haujlwm installation. Tsis txhob mount tus kav hlau txais xov radar ncaj qha saum cov khoom noj khoom haus. Cov khoom cuam tshuam thiab cov hmoov av muaj zog nyob rau hauv cov cheeb tsam no yuav cuam tshuam nrog cov teeb liab txais tos. Peb pom zoo kom xaiv ib txoj hauj lwm nyob rau sab sauv ntawm lub silo sab saum toj, nyob deb ntawm qhov chaw pub mis thiab tso tawm. Lub caij no, ua kom muaj kev nyab xeeb nyob deb ntawm cov qauv hauv silo los tiv thaiv cov teeb liab tsis tseeb.
Thib peb, muab cov khoom txhawb nqa thaum xav tau. Rau silos nrog cov plua plav hnyav heev, nruab ib lub tshuab ntxuav cua rau lub kav hlau txais xov radar. Nruam cua tshuab ua kom lub kav hlau txais xov kom huv si txhua xyoo puag ncig thiab lav tau ntev -lub sij hawm ruaj khov teeb liab kis tau tus mob. Yog tias lub silo khaws cov khoom siv cua sov, siab -cov kav hlau txais xov kub kuj tseem yuav tsum tau.
7. Cov kev xav tsis zoo txog Radar rau Silo Measurement
Ntau tus neeg yuav khoom muaj kev nkag siab yuam kev thaum xaiv radar sensors rau kev ntsuas cov khoom siv, thiab cov kev xav tsis zoo no feem ntau ua rau xaiv cov qauv tsis raug.
Qee cov neeg siv xav tias tag nrho cov radar transmitters tuaj yeem ua haujlwm sib npaug zoo rau cov khoom loj. Qhov no tsis yog li ntawd. Tsawg- zaus radar nrog lub kaum sab xis dav yuav khaws cov cim cuam tshuam loj hauv cov silos loj, ua rau cov ntaub ntawv tsis ruaj khov. Nws yeej tsis tuaj yeem hloov cov kws tshaj lij siab tshaj - zaus radar tsim los rau kev tshawb pom cov qib siab.
Lwm tus ntseeg tias radar tuaj yeem daws cov teeb meem ntawm kev sib tsoo thiab nas -qhov teeb meem. Qhov tseeb, radar tsuas tuaj yeem ntes qhov chaw ntawm cov khoom siv txuas hniav. Txhawm rau tiv thaiv kev sib tsoo hauv paus, koj yuav tsum ua kom zoo dua cov qauv silo lossis ntxiv cov khoom siv ntws los pab. Radar yog cov cuab yeej ntsuas txhim khu kev qha, tab sis tsis yog kev daws teeb meem rau cov khoom siv tsis zoo.
8. Cov lus nug nquag nug (FAQ)
Q1: Cov radar qib transmitters puas ua haujlwm ib txwm nyob hauv silos uas muaj plua plav hnyav?
Yog lawm. Microwave signals tsis tshua muaj kev cuam tshuam los ntawm cov plua plav ntab. Nruab nrog cov khoom siv cua tshem tawm, lub radar tuaj yeem tswj xyuas qhov ntsuas tsis tu ncua thiab raug txawm tias nyob rau hauv lub sijhawm ntev - plua plav ua haujlwm.
Q2: Puas yog qhov sloped nto ntawm tej khib nyiab cuam tshuam rau qhov ntsuas qhov tseeb ntawm radar?
Niaj hnub nimno FMCW radar yog nruab nrog lub zog ua haujlwm algorithms. Nws tuaj yeem xam qhov nruab nrab ntawm cov khoom siv raws li ntau cov ntsiab lus ncha ntawm qhov chaw sloped. Qhov cuam tshuam los ntawm cov khoom lub kaum sab xis ntawm repose yog khaws cia nyob rau hauv ib qho kev ua yuam kev ntau rau kev tsim khoom.
Q3: Hom radar twg yog tus nqi ntau dua - zoo rau cov nplej silos?
80GHz tsis yog-kev tiv tauj radar yog qhov kev xaiv zoo tshaj plaws rau cov nplej silos. Nws nta yooj yim installation, xoom kev sib cuag nrog grain, tsis tshua muaj txij nkawm thiab kev pab cuam lub neej ntev, tawm tsam ib tug zoo meej tshuav nyiaj li cas ntawm kev ua tau zoo thiab kev yuav nyiaj txiag.
Q4: Puas yog cov khoom tawv tawv puas puas radar sensors?
Tsis yog -kev tiv tauj radar tsis muaj qhov txuas mus rau hauv lub silo, yog li nws yuav tsis raug puas tsuaj los ntawm cov khoom poob. Rau kev taw qhia yoj radar, cov khoom loj thiab tawv tuaj yeem cuam tshuam thiab deform qhov kev sojntsuam, yog li nws tsis pom zoo rau cov khib nyiab ntxhib.
9. Cov lus xaus
Txhawm rau qhwv nws, cov kws tshaj lij radar qib transmitters muaj peev xwm ntsuas txhua yam ntawm cov khoom siv hauv cov khoom lag luam. Piv nrog rau cov tsoos ultrasonic sensors, teb paddles thiab plumb bob pab kiag li lawm, radar cov khoom qhia tau zoo heev nyob rau hauv plua plav tsis kam, ua hauj lwm stability thiab tag nrho cov kev pab cuam lub neej.
Tus yuam sij kom tau txais txiaj ntsig kev ntsuas zoo tshaj plaws yog nyob rau hauv kev xaiv tus qauv raug thiab kev teeb tsa tus qauv. Xaiv lub siab- zaus tsis yog- sib cuag radar rau cov silos loj thiab cov ntaub ntawv ntxhib, thiab mus rau kev coj yoj radar rau me me silos thiab ultra- hmoov zoo. Nrog cov khoom siv sib txuam thiab kev teeb tsa tsim nyog, radar qib transmitters yuav dhau los ua qhov ntev - cov kev daws teeb meem zoo rau koj qib kev saib xyuas haujlwm.
Yog tias koj muaj kev xav tau ntawm radar qib transmitters nplooj siab rau silo khoom ntsuas ntsuas, xav tiv tauj peb. Peb yuav pom zoo cov khoom tsim nyog tshaj plaws thiab txhawb kev daws teeb meem raws li koj qhov tseeb ntawm - chaw ua haujlwm.
10. Cov ntaub ntawv
- Silo Level Monitoring Technology Application Guide, International Society of Automation (ISA)
- Daim Ntawv Qhia Txog Kev Ua Haujlwm ntawm Microwave Radar hauv Plua plav thiab Khoom Siv Ib puag ncig
- Industrial Bulk Solid Storage & Measurement Solution Manual
- Field Application Case Sau ntawm Radar Qib Transmitters rau Silos
