Nrog rau kev txhim kho sai ntawm cov thev naus laus zis xws li Is Taws Nem ntawm Yam thiab kev txawj ntse, cov roj hluav taws xob, cov cuab yeej ntsuas qhov tseem ceeb hu ua "hluav taws xob tsib qhov kev xav", tau txais txoj hauv kev loj hlob tsis tau muaj dua. Los ntawm kev tshuaj xyuas thawj zaug ntawm kev lag luam tshuaj lom thiab cov pa phem rau nws txoj kev siv dav hauv kev kuaj mob, lub tsev ntse, kev saib xyuas ib puag ncig thiab lwm yam kev lag luam niaj hnub no, roj sensor thev naus laus zis tau dhau los ua qhov kev hloov pauv loj ntawm ib qho kev ua haujlwm rau kev txawj ntse, miniaturization thiab ntau yam. Tsab ntawv xov xwm no yuav qhia meej txog cov yam ntxwv ntawm kev ua haujlwm, kev tshawb fawb tshiab thiab kev siv thoob ntiaj teb cov xwm txheej ntawm cov pa sensors, nrog rau kev saib xyuas tshwj xeeb rau kev txhim kho cov qauv hauv kev soj ntsuam roj hauv cov tebchaws xws li Tuam Tshoj thiab Tebchaws Meskas.
Cov yam ntxwv thiab kev loj hlob ntawm cov roj sensors
Raws li lub converter uas hloov cov ntim feem ntawm ib qho roj rau hauv cov teeb liab hluav taws xob sib xws, cov roj sensor tau dhau los ua ib qho tseem ceeb thiab tseem ceeb ntawm cov cuab yeej siv niaj hnub no. Cov khoom siv no ua cov qauv roj los ntawm kev kuaj xyuas lub taub hau, feem ntau suav nrog cov kauj ruam xws li lim tawm cov impurities thiab cuam tshuam cov pa roj, ziab lossis kev kho tub yees, thiab thaum kawg hloov cov ntaub ntawv roj concentration rau hauv cov cim hluav taws xob ntsuas. Tam sim no, muaj ntau hom roj sensors nyob rau hauv kev ua lag luam, xws li semiconductor hom, electrochemical hom, catalytic combustion hom, infrared gas sensors thiab photoionization (PID) gas sensors, thiab lwm yam. Txhua tus ntawm lawv muaj nws tus yam ntxwv thiab yog dav siv nyob rau hauv pej xeem, muaj thiab ib puag ncig kuaj teb.
Kev ruaj ntseg thiab rhiab heev yog ob lub ntsiab lus qhia rau kev ntsuas qhov ua tau zoo ntawm cov roj sensors. Kev ruaj ntseg yog hais txog qhov kev pheej hmoo ntawm cov lus teb yooj yim ntawm lub sensor thoob plaws nws lub sijhawm ua haujlwm tag nrho, uas nyob ntawm xoom drift thiab lub caij nyoog drift. Qhov zoo tshaj plaws, rau cov khoom lag luam zoo nyob rau hauv kev ua haujlwm tsis tu ncua, txhua xyoo xoom drift yuav tsum tsawg dua 10%. rhiab heev yog hais txog qhov sib piv ntawm qhov kev hloov pauv ntawm lub sensor tso zis rau qhov kev hloov pauv hauv qhov ntsuas ntsuas. Qhov rhiab heev ntawm ntau hom sensors txawv heev, feem ntau yog nyob ntawm cov txheej txheem kev thiab cov khoom siv uas lawv tau txais. Tsis tas li ntawd, kev xaiv (piv txwv li, cross-rhiab heev) thiab corrosion kuj tseem yog qhov tseem ceeb rau kev ntsuas qhov ua tau zoo ntawm cov roj sensors. Tus qub txiav txim siab lub peev xwm paub txog lub peev xwm nyob rau hauv ib puag ncig roj sib xyaw, thaum lub sijhawm tom kawg yog cuam tshuam nrog lub sensor lub siab ntev nyob rau hauv high-concentration lub hom phiaj gases.
Tam sim no txoj kev loj hlob ntawm roj sensor technology nthuav tawm ntau yam kev pom tseeb. Ua ntej tshaj plaws, kev tshawb fawb thiab kev tsim cov ntaub ntawv tshiab thiab cov txheej txheem tshiab tau txuas ntxiv mus tob. Cov khoom siv hlau oxide semiconductor xws li ZnO, SiO₂, Fe₂O₃, thiab lwm yam. Cov kws tshawb fawb tau doping, hloov kho thiab nto-hloov cov khoom siv roj-rhiab uas twb muaj lawm los ntawm kev hloov tshuaj lom neeg, thiab txhim kho cov txheej txheem ua yeeb yaj kiab tib lub sijhawm los txhim kho kev ruaj ntseg thiab kev xaiv ntawm cov sensors. Lub caij no, kev tsim cov ntaub ntawv tshiab xws li cov khoom sib xyaw thiab hybrid semiconductor gas-sensitive cov ntaub ntawv thiab cov ntaub ntawv polymer gas-rhiab heev kuj tseem ua haujlwm siab heev. Cov ntaub ntawv no muaj ntau dua rhiab heev, selectivity thiab stability rau txawv gases.
Kev txawj ntse ntawm sensors yog lwm txoj kev txhim kho tseem ceeb. Nrog rau kev ua tiav ntawm kev siv cov khoom siv thev naus laus zis tshiab xws li nanotechnology thiab nyias-zaj duab xis thev naus laus zis, roj sensors tau dhau los ua kev sib xyaw thiab ntse. Los ntawm kev siv ntau yam kev qhuab qhia sib xyaw ua ke xws li micro-mechanical thiab microelectronics thev naus laus zis, khoos phis tawj thev naus laus zis, teeb tsa ua thev naus laus zis, sensor thev naus laus zis, thiab thev naus laus zis kuaj pom kev txhaum, cov kws tshawb nrhiav tab tom tsim cov tshuab hluav taws xob digital ntse ntse uas muaj peev xwm los saib xyuas ntau lub roj. Ib qho tshuaj tiv thaiv-muaj peev xwm hom multivariable sensor tsis ntev los no tsim los ntawm pab pawg tshawb fawb ntawm Associate Professor Yi Jianxin los ntawm Lub Xeev Tseem Ceeb Laboratory ntawm Hluav Taws Xob Hluav Taws Xob ntawm University of Science thiab Technology ntawm Tuam Tshoj yog ib tus neeg sawv cev ntawm cov qauv no. Lub sensor no paub txog qhov peb-dimensional nrhiav kom tau thiab txheeb xyuas qhov tseeb ntawm ntau cov pa roj thiab cov yam ntxwv ntawm hluav taws los ntawm ib qho khoom siv 59.
Arrayization thiab algorithm optimization kuj tau txais kev saib xyuas ntxiv. Vim yog qhov teeb meem dav-spectrum teb ntawm ib qho roj sensor, nws yooj yim cuam tshuam thaum muaj ntau yam roj av ib txhij. Kev siv ntau lub tshuab hluav taws xob los tsim cov array tau dhau los ua qhov kev daws teeb meem zoo los txhim kho lub peev xwm paub. Los ntawm kev nce qhov ntev ntawm cov roj pom, lub sensor array tuaj yeem tau txais cov cim qhia ntau dua, uas yog qhov tsim nyog rau kev ntsuas ntau qhov ntsuas thiab txhim kho lub peev xwm ntawm kev txiav txim siab thiab kev lees paub. Txawm li cas los xij, raws li tus naj npawb ntawm cov sensors hauv array nce, qhov nyuaj ntawm kev ua cov ntaub ntawv kuj nce. Yog li ntawd, qhov optimization ntawm lub sensor array yog qhov tseem ceeb tshwj xeeb. Nyob rau hauv array optimization, txoj kev xws li kev sib raug zoo coefficient thiab pawg tsom xam tau dav siv, thaum cov roj paub algorithms xws li Thawj Tswj Xyuas Cheeb Tsam (PCA) thiab cov khoom siv hluav taws xob neural Network (ANN) tau txhim kho cov qauv kev paub txog lub peev xwm ntawm cov sensors.
Table: Kev sib piv ntawm Cov Hom Tseem Ceeb ntawm Gas Sensors
Sensor hom, lub hauv paus ntsiab lus ua haujlwm, qhov zoo thiab qhov tsis zoo, kev ua neej ntev
Semiconductor-type gas adsorption muaj tus nqi qis hauv kev hloov pauv ntawm cov khoom siv hluav taws xob, cov lus teb ceev ceev, kev xaiv tsis zoo, thiab cuam tshuam rau qhov kub thiab av noo rau 2-3 xyoos.
Electrochemical gas undergoes REDOX cov tshuaj tiv thaiv los tsim tam sim no, uas muaj kev xaiv zoo thiab muaj kev nkag siab zoo. Txawm li cas los xij, cov electrolyte tau txwv tsis pub hnav thiab lub neej ntev ntawm 1-2 xyoos (rau cov kua electrolyte).
Catalytic combustion hom combustible gas combustion ua rau kub hloov. Nws yog tsim tshwj xeeb rau kev tshawb nrhiav cov roj combustible thiab tsuas yog siv tau rau cov roj combustible rau kwv yees li peb xyoos.
Infrared gases muaj qhov tseeb siab nyob rau hauv absorbing infrared lub teeb ntawm cov wavelengths tshwj xeeb, tsis ua rau muaj kev lom, tab sis muaj tus nqi siab thiab cov ntim loj rau 5 mus rau 10 xyoo.
Photoionization (PID) ultraviolet photoionization rau roj molecule nrhiav kom tau VOCs muaj qhov rhiab heev thiab tsis tuaj yeem paub qhov txawv ntawm cov tebchaw rau 3 txog 5 xyoos
Nws yog ib qho tsim nyog sau cia tias txawm hais tias cov cuab yeej siv roj hluav taws xob tau ua rau muaj kev vam meej, nws tseem ntsib qee qhov teeb meem. Lub neej ntev ntawm sensors txwv lawv daim ntawv thov hauv qee qhov chaw. Piv txwv li, lub neej ntawm cov semiconductor sensors yog kwv yees li 2 mus rau 3 xyoo, uas ntawm electrochemical gas sensors yog kwv yees li 1 mus rau 2 xyoo vim electrolyte poob, thaum lub zog-state electrolyte electrochemical sensors tuaj yeem ncav cuag 5 xyoo. Tsis tas li ntawd, cov teeb meem drift (kev hloov pauv hauv cov lus teb ntawm lub sijhawm) thiab cov teeb meem sib xws (kev ua tau zoo sib txawv ntawm cov sensors hauv tib pawg) kuj tseem yog ib qho tseem ceeb txwv tsis pub siv dav dav ntawm cov roj sensors. Hauv kev teb rau cov teeb meem no, cov kws tshawb fawb, ntawm ib sab, tau cog lus los txhim kho cov khoom siv roj-rhiab thiab cov txheej txheem tsim khoom, thiab ntawm qhov tod tes, lawv tau them nyiaj rau lossis tshem tawm cov kev cuam tshuam ntawm cov sensor drift ntawm kev ntsuas tau los ntawm kev tsim cov ntaub ntawv ua tiav qib siab algorithms.
Qhov sib txawv ntawm daim ntawv thov scenarios ntawm cov pa sensors
Gas sensor technology tau permeated txhua yam ntawm kev ua neej nyob. Nws daim ntawv thov scenarios tau ntev dhau los ntawm kev soj ntsuam kev nyab xeeb kev lag luam ib txwm muaj thiab tau nthuav dav mus rau ntau yam xws li kev noj qab haus huv, kev saib xyuas ib puag ncig, lub tsev ntse, thiab kev nyab xeeb zaub mov. Qhov kev sib txawv ntawm cov ntawv thov sib txawv no tsis tsuas yog qhia txog qhov muaj peev xwm ua tau los ntawm kev txhim kho thev naus laus zis tab sis kuj tseem ua rau muaj kev xav tau ntawm kev sib raug zoo rau kev tshawb nrhiav roj.
Kev nyab xeeb kev lag luam thiab kev saib xyuas cov pa phem
Nyob rau hauv kev lag luam kev nyab xeeb, roj sensors ua lub luag haujlwm tsis tuaj yeem hloov tau, tshwj xeeb tshaj yog nyob rau hauv kev lag luam uas muaj kev pheej hmoo siab xws li tshuaj engineering, roj av, thiab mining. Tuam Tshoj txoj "14th Tsib Xyoo Kev Npaj rau Kev Nyab Xeeb Kev Nyab Xeeb Kev Nyab Xeeb Kev Nyab Xeeb Kev Nyab Xeeb" kom meej meej yuav tsum muaj cov chaw ua lag luam tshuaj lom neeg los tsim kom muaj kev saib xyuas zoo thiab ceeb toom ntxov rau cov pa phem thiab cov pa phem thiab txhawb kev tsim kho ntawm cov ntse ntse tswj kev pheej hmoo. "Industrial Internet Plus Work Safety Action Plan" kuj txhawb cov chaw ua si kom xa Internet ntawm Yam sensors thiab AI tsom xam platforms kom ua tiav lub sij hawm saib xyuas thiab sib koom tes teb rau cov kev pheej hmoo xws li roj av. Cov kev taw qhia txoj cai no tau txhawb nqa kev siv cov roj sensors hauv kev lag luam kev nyab xeeb.
Niaj hnub nimno kev lag luam roj saib xyuas tshuab tau tsim ntau txoj hauv kev. Gas huab imaging thev naus laus zis pom cov pa tawm los ntawm kev pom cov pa roj raws li kev hloov pauv hauv pixel grey qib hauv daim duab. Nws lub peev xwm tshawb pom muaj feem cuam tshuam nrog rau yam xws li qhov concentration thiab ntim ntawm cov pa xau, qhov sib txawv ntawm qhov kub thiab txias, thiab kev soj ntsuam nrug. Fourier hloov pauv infrared spectroscopy thev naus laus zis tuaj yeem ua tau zoo thiab ib nrab saib xyuas ntau dua 500 hom roj av suav nrog cov khoom siv tsis zoo, cov organic, tshuaj lom thiab ua rau muaj kev phom sij, thiab tuaj yeem tshawb xyuas 30 hom roj ib txhij. Nws yog haum rau cov complex gas xyuas yuav tsum tau nyob rau hauv chemical industrial parks. Cov thev naus laus zis no, thaum ua ke nrog cov khoom siv roj ib txwm muaj, tsim kom muaj ntau theem kev lag luam roj kev nyab xeeb saib xyuas network.
Nyob rau theem kev siv tshwj xeeb, kev tshuaj xyuas cov roj hluav taws xob yuav tsum ua raws li cov qauv hauv tebchaws thiab thoob ntiaj teb. Tuam Tshoj "Tsim qauv rau kev kuaj pom thiab tswb ntawm cov nplaim hluav taws thiab cov pa phem hauv kev lag luam Petrochemical" GB 50493-2019 thiab "General Technical Specification for Safety Monitoring of Major Hazard Sources of Hazardous Chemicals" AQ 3035-2010 muab cov kev qhia tshwj xeeb rau kev lag luam roj xyuas OSHA United States thiab thoob ntiaj teb Kev Tswj Xyuas Kev Nyab Xeeb. ib tug series ntawm cov qauv kuaj roj, yuav tsum tau kuaj roj ua ntej confined chaw ua hauj lwm thiab xyuas kom meej tias cov concentration ntawm cov pa phem nyob rau hauv cov huab cua yog qis dua qhov kev nyab xeeb theem ntawm 610. Cov qauv ntawm NFPA (National Fire Protection Association ntawm lub tebchaws United States), xws li NFPA 72 thiab NFPA 54, muab tso rau pem hauv ntej tej yam kev cai rau kev soj ntsuam ntawm flammable gases.
Kev kho mob thiab kev kuaj mob
Kev kho mob thiab kev noj qab haus huv teb tau dhau los ua ib qho kev lag luam zoo tshaj plaws rau cov pa roj sensors. Cov pa exhaled ntawm tib neeg lub cev muaj ntau tus biomarkers ntsig txog kev noj qab haus huv. Los ntawm kev kuaj xyuas cov biomarkers no, kev tshuaj xyuas ntxov thiab kev soj ntsuam tas li ntawm cov kab mob tuaj yeem ua tiav. Lub handheld ua pa acetone nrhiav kom pom cov cuab yeej tsim los ntawm Dr. Wang Di pab neeg los ntawm Zhejiang Laboratory's Super Perception Research Center yog ib tug neeg sawv cev ntawm daim ntawv thov no. Cov cuab yeej no siv txoj hauv kev siv thev naus laus zis los ntsuas cov ntsiab lus acetone hauv tib neeg lub qhov nqus pa los ntawm kev kuaj xyuas cov xim hloov ntawm cov khoom siv roj-rhiab, yog li ua tiav sai thiab tsis mob nrhiav pom ntawm hom 1 mob ntshav qab zib.
Thaum cov tshuaj insulin hauv tib neeg lub cev qis, nws tsis tuaj yeem hloov cov piam thaj mus rau hauv lub zog thiab hloov cov rog. Raws li ib qho ntawm cov khoom lag luam tom qab rog rog, acetone tau tawm ntawm lub cev los ntawm kev ua pa. Dr. Wang Di piav qhia 1. Piv nrog rau cov kev kuaj ntshav ib txwm muaj, txoj kev kuaj ua pa no muaj kev kuaj mob zoo dua thiab kev kho mob. Tsis tas li ntawd, pab pawg tab tom txhim kho "kev tso tawm txhua hnub" thaj acetone sensor. Cov khoom siv uas tsis tshua muaj nqi no tuaj yeem ntsuas cov roj acetone tawm ntawm daim tawv nqaij ib ncig ntawm lub moos. Nyob rau hauv lub neej yav tom ntej, thaum ua ke nrog kev txawj ntse technology, nws muaj peev xwm pab tau nyob rau hauv kev kuaj mob, kev soj ntsuam thiab kev qhia tshuaj ntawm cov ntshav qab zib.
Sib nrug los ntawm cov ntshav qab zib, cov pa roj kuj tseem qhia tau tias muaj peev xwm zoo hauv kev tswj cov kab mob ntev thiab kev saib xyuas cov kab mob ua pa. Cov pa roj carbon dioxide concentration nkhaus yog lub hauv paus tseem ceeb rau kev txiav txim siab txog kev ua pa ntawm lub ntsws ntawm cov neeg mob, thaum lub ntsiab lus nkhaus ntawm qee cov roj cim qhia txog kev loj hlob ntawm cov kab mob ntev. Kev lig kev cai, kev txhais cov ntaub ntawv no xav tau kev koom tes ntawm cov neeg ua haujlwm kho mob. Txawm li cas los xij, nrog kev txhawb nqa ntawm cov cuab yeej txawj ntse thev naus laus zis, cov cuab yeej hluav taws xob ntse tsis tuaj yeem ntes cov pa roj thiab kos cov nkhaus, tab sis kuj txiav txim siab txog qib ntawm kev txhim kho kab mob, txo qis kev ntxhov siab rau cov neeg ua haujlwm kho mob.
Hauv kev lag luam ntawm kev noj qab haus huv cov cuab yeej siv tau, kev siv cov roj sensors tseem nyob rau theem pib, tab sis qhov kev cia siab yog dav. Cov kws tshawb fawb los ntawm Zhuhai Gree Cov Khoom Siv Hluav Taws Xob tau taw qhia tias txawm hais tias cov khoom siv hauv tsev sib txawv ntawm cov cuab yeej siv kho mob nrog kev kuaj mob ua haujlwm, hauv kev saib xyuas kev noj qab haus huv hauv tsev niaj hnub, cov pa roj carbon monoxide arrays muaj qhov zoo xws li tus nqi qis, tsis muaj kev cuam tshuam thiab miniaturization, ua rau lawv xav tias yuav nce ntxiv hauv cov khoom siv hauv tsev xws li kev saib xyuas qhov ncauj thiab lub sij hawm tso quav. Nrog rau kev thov kev noj qab haus huv hauv tsev ntau zuj zus, kev saib xyuas tib neeg kev noj qab haus huv los ntawm cov khoom siv hauv tsev yuav dhau los ua ib qho tseem ceeb rau kev txhim kho cov tsev ntse.
Kev saib xyuas ib puag ncig thiab kev tiv thaiv kev ua qias tuaj
Kev saib xyuas ib puag ncig yog ib qho ntawm thaj chaw uas cov roj sensors tau siv dav tshaj plaws. Raws li lub ntiaj teb tseem ceeb ntawm kev tiv thaiv ib puag ncig txuas ntxiv nce ntxiv, qhov kev thov rau kev saib xyuas ntau yam pa phem hauv huab cua kuj tseem nce ntxiv ib hnub. Gas sensors tuaj yeem ntes cov pa phem xws li carbon monoxide, sulfur dioxide thiab ozone, muab cov cuab yeej zoo rau kev saib xyuas ib puag ncig huab cua zoo.
Lub UGT-E4 electrochemical gas sensor ntawm British Gas Shield Company yog ib qho khoom sawv cev hauv kev saib xyuas ib puag ncig. Nws tuaj yeem ntsuas cov ntsiab lus ntawm cov pa phem hauv huab cua thiab muab cov ntaub ntawv raws sijhawm thiab raug txhawb rau cov chaw tiv thaiv ib puag ncig. Lub sensor no, los ntawm kev koom ua ke nrog cov ntaub ntawv xov xwm niaj hnub no, tau ua tiav cov haujlwm xws li kev saib xyuas cov chaw taws teeb, cov ntaub ntawv upload, thiab lub tswb nrov, ua kom muaj txiaj ntsig zoo thiab yooj yim ntawm kev tshawb nrhiav roj. Cov neeg siv tuaj yeem taug qab cov kev hloov pauv hauv cov pa roj txhua lub sijhawm thiab txhua qhov chaw tsuas yog los ntawm lawv lub xov tooj ntawm tes lossis khoos phis tawj, muab cov hauv paus kev tshawb fawb rau kev tswj hwm ib puag ncig thiab tsim txoj cai.
Nyob rau hauv cov nqe lus ntawm kev saib xyuas huab cua zoo hauv tsev, cov pa roj sensors kuj ua lub luag haujlwm tseem ceeb. EN 45544 tus qauv muab los ntawm European Committee for Standardization (EN) tshwj xeeb rau kev ntsuas huab cua sab hauv tsev thiab npog cov kev sim rau ntau yam teeb meem gases 610. Cov pa roj carbon dioxide sensors, formaldehyde sensors, thiab lwm yam hauv kev ua lag luam tau siv dav hauv cov tsev nyob, cov tsev lag luam thiab cov chaw lom zem rau pej xeem. Tshwj xeeb tshaj yog thaum lub sijhawm COVID-19 muaj thoob qhov txhia chaw, qhov cua hauv tsev thiab huab cua zoo tau txais kev saib xyuas tsis tau pom dua, ntxiv kev txhawb nqa kev txhim kho thiab kev siv cov cuab yeej cuam tshuam txog kev siv tshuab.
Kev saib xyuas cov pa roj carbon emissions yog ib qho kev qhia tawm ntawm cov pa sensors. Tawm tsam keeb kwm yav dhau los ntawm lub ntiaj teb cov pa roj carbon nruab nrab, kev saib xyuas meej ntawm lub tsev cog khoom gases xws li carbon dioxide tau dhau los ua qhov tseem ceeb. Infrared carbon dioxide sensors muaj qhov tshwj xeeb zoo hauv daim teb no vim lawv qhov siab precision, zoo xaiv thiab lub neej ua haujlwm ntev. Cov "Cov Lus Qhia rau Kev Tsim Kho Kev Ruaj Ntseg Kev Nyab Xeeb Kev Nyab Xeeb Kev Tswj Xyuas Platforms hauv Chemical Industrial Parks" hauv Suav teb tau teev cov roj hluav taws xob / tshuaj lom tshuaj xyuas thiab cov dej xau qhov kev soj ntsuam raws li qhov yuav tsum tau tsim cov ntsiab lus, uas qhia txog txoj cai theem kev tsom mus rau lub luag haujlwm ntawm kev saib xyuas roj hauv thaj chaw tiv thaiv ib puag ncig.
Smart Home thiab Food Safety
Lub tsev ntse yog qhov kev cog lus tshaj plaws rau cov neeg siv khoom lag luam rau cov roj sensors. Tam sim no, cov pa roj sensors feem ntau yog siv rau hauv cov khoom siv hauv tsev xws li cua purifiers thiab cua txias. Txawm li cas los xij, nrog kev qhia txog cov sensor arrays thiab ntse algorithms, lawv daim ntawv thov muaj peev xwm hauv cov xwm txheej xws li khaws cia, ua noj, thiab saib xyuas kev noj qab haus huv tau maj mam rub tawm.
Nyob rau hauv cov nqe lus ntawm kev khaws cia zaub mov, cov pa roj sensors tuaj yeem saib xyuas cov ntxhiab tsw tsis zoo uas tso tawm los ntawm cov khoom noj thaum lub sijhawm khaws cia kom txiav txim siab qhov tshiab ntawm cov zaub mov. Cov txiaj ntsig kev tshawb fawb tsis ntev los no qhia tau tias txawm tias ib lub sensor siv los saib xyuas cov ntxhiab tsw lossis cov pa roj sensor array ua ke nrog cov qauv kev lees paub tau txais los txiav txim siab cov khoom noj tshiab, cov txiaj ntsig zoo tau ua tiav. Txawm li cas los xij, vim qhov nyuaj ntawm qhov tseeb ntawm kev siv lub tub yees (xws li cuam tshuam los ntawm cov neeg siv qhib thiab kaw qhov rooj, pib thiab nres compressors, thiab cov cua sab hauv, thiab lwm yam), nrog rau kev sib koom ua ke ntawm ntau yam tsis zoo ntawm cov khoom noj khoom haus, tseem muaj chaw rau kev txhim kho qhov tseeb ntawm kev txiav txim siab zaub mov tshiab.
Daim ntawv thov ua noj yog lwm qhov xwm txheej tseem ceeb rau cov roj sensors. Muaj ntau pua cov khoom xyaw gaseous uas tsim thaum lub sij hawm ua noj, nrog rau cov khoom me me, alkanes, cov tshuaj tsw qab, aldehydes, ketones, cawv, alkenes thiab lwm cov organic tebchaw. Nyob rau hauv xws li ib tug complex ib puag ncig, roj sensor arrays qhia ntau pom zoo kom zoo dua ib tug sensors. Cov kev tshawb fawb pom tau tias cov pa roj sensor arrays tuaj yeem siv los txiav txim siab txog kev ua noj ntawm cov zaub mov raws li tus kheej saj, lossis ua cov cuab yeej pabcuam kev noj zaub mov kom tsis tu ncua qhia kev ua noj rau cov neeg siv. Txawm li cas los xij, kev ua noj ib puag ncig xws li kub siab, ua noj ua haus thiab dej vapor tuaj yeem yooj yim ua rau lub sensor "tshuaj lom", uas yog ib qho teeb meem uas yuav tsum tau daws.
Hauv kev lag luam ntawm kev nyab xeeb khoom noj, kev tshawb fawb ntawm Wang Di pab neeg tau pom tias muaj peev xwm siv cov nqi ntawm cov roj sensors. Lawv tsom mus rau lub hom phiaj ntawm "kev txheeb xyuas ntau lub pa roj ib txhij nrog lub xov tooj ntawm tes me me plug-in", thiab tau cog lus tias yuav ua kom cov ntaub ntawv kev nyab xeeb khoom noj tau yooj yim. Qhov kev sib xyaw ua ke ntawm cov khoom siv olfactory no tuaj yeem tshawb xyuas cov khoom tsis sib haum xeeb hauv cov zaub mov, txiav txim siab qhov tshiab thiab kev nyab xeeb ntawm cov zaub mov, thiab muab cov ntaub ntawv siv sijhawm tiag tiag rau cov neeg siv khoom.
Table: Lub Ntsiab Ntsuas Cov Khoom thiab cov yam ntxwv ntawm cov roj sensors hauv ntau daim ntawv thov
Daim ntawv thov teb, cov khoom tseem ceeb tshawb pom, feem ntau siv hom sensor, kev sib tw, kev txhim kho tiam sis
Muaj kev nyab xeeb combustible gas, toxic gas catalytic combustion hom, electrochemical hom, hnyav ib puag ncig kam rau ua ntau-gas synchronous xyuas, to tracing
Kev kho mob thiab kev noj qab haus huv acetone, CO₂, VOCs semiconductor hom, colorimetric yam xaiv thiab rhiab heev, hnav thiab ntse kuaj
Lub sij hawm ntev ruaj khov daim phiaj xa mus thiab cov ntaub ntawv xa mus rau lub sijhawm rau ib puag ncig saib xyuas cov pa phem thiab cov pa phem hauv tsev cog khoom hauv infrared thiab electrochemical cov ntaub ntawv
Ntse tsev zaub mov volatile gas, ua noj haus luam yeeb semiconductor hom, PID tiv thaiv kev cuam tshuam muaj peev xwm
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Post lub sij hawm: Jun-11-2025