Ikharbhon diokside yigesi engenambala nengenavumba. Lelinye lawona malungu abalulekileyo omoya. Njengoko i-reactant ephambili ye-photosynthesis, i-concentration ye-CARBON dioxide ihambelana ngokuthe ngqo nokusebenza kwe-photosynthetic yezityalo, kwaye imisela ukukhula kunye nophuhliso, isigaba sokuvuthwa, ukuxhathisa uxinzelelo, umgangatho kunye nesivuno sezityalo. Kodwa ubuninzi bayo abuyi kuvelisa kuphela i-greenhouse effect kunye nezinye iziphumo, kodwa kunye nokulimaza impilo yabantu. Kwipesenti ze-0.3, abantu bafumana intloko ephawulekayo, kwaye kwi-4-5 ekhulwini baziva bedidekile. Indawo yangaphakathi, ngakumbi kumagumbi ane-air-conditioning, ivalwe ngokufanelekileyo. Ukuba akukho moya ixesha elide, ukuxinwa kwe-carbon dioxide kuya kwanda ngokuthe ngcembe, okuyingozi kwimpilo yabantu. Ngokomgangatho womgangatho womoya wangaphakathi ophunyezwe kwi-2003, ixabiso eliqhelekileyo leqhekeza levolumu ye-avareji yemihla ngemihla ye-carbon dioxide akufanele idlule i-0.1%.
Ngophuhliso oluqhubekayo lwesayensi kunye netekhnoloji, ukuphuculwa okukhulayo komgangatho wokuphila kwabantu kunye nokunyuka kwengqwalasela yabantu ekukhuselweni kwendalo, ukujongwa ngokobungakanani kunye nokulawulwa kwegesi ye-carbon dioxide iye yaba yimfuno eyandayo kwi-air conditioning, ezolimo, unyango, imoto kunye nokhuseleko lokusingqongileyo. .Izinzwa zeCarbon dioxide zisetyenziswa kakhulu kwishishini, kwezolimo, kukhuselo lwelizwe, ezonyango kunye nempilo, ukukhuselwa kokusingqongileyo, i-aerospace kunye nezinye iinkalo.
Umgaqo wokusebenza we-carbon dioxide sensor ufakwe ngezantsi.
Yonke into inophawu lwayo lomgca oqaqambileyo we-spectrum, kunye ne-spectra yokufunxa ngokuhambelanayo, njengoko zisenza iimolekyuli zegesi yecarbon dioxide. I-lattice vibration ye-ceramics kunye nokunyakaza kwe-electron kunempembelelo yomqobo, ukushisa kuphakama, i-lattice vibration iqinisiwe, i-amplitude iyanda, isenzo sokuthintela i-electron siqiniswa. Ngokwethiyori yokufunxa ekhethiweyo yerhasi, xa ubude bamaza okukhutshwa komthombo wokukhanya bungqamana nobude berhasi yokufunxa, ukufunxwa kweresonance kuya kwenzeka, kwaye ukuqina kwayo kokufunxa kunxulumene nokuxinana kwerhasi. Ukuxinwa kwerhasi kunokulinganiswa ngokulinganisa ukunyanzeliswa kokukhanya.
Okwangoku, kukho iintlobo ezininzi zezivamvo ze-carbon dioxide, kuquka uhlobo lwe-thermal conductivity, uhlobo lwe-densitometer, uhlobo lokufunxa ngemitha, uhlobo lwe-conductivity yombane, uhlobo lokufunxa imichiza, uhlobo lwe-electrochemical, uhlobo lwe-chromatography, uhlobo lwe-mass spectrum, uhlobo lwe-infrared optical njalo njalo.
Ukufunxa i-infrared carbon dioxide gas sensor isekelwe kumgaqo wokuba i-spectrum yokufunxa igesi iyahluka kwizinto ezahlukeneyo. Isivamvo seCarbon dioksidi ngolawulo lwesibane somqhubi wesibane se-infrared ngaphakathi kwebhendi esisigxina ye-infrared, ukufunxwa kwerhasi phantsi kovavanyo, utshintsho lwe-infrared amplitude yokukhanya, kwakhona ngokubalwa kwetshekhi yokutshintsha koxinzelelo lwegesi, umqondiso wokuphuma kwenzwa emva kokucoca, ukusetyenzwa okuphuculweyo kunye Ukuqokelelwa kwe-ADC kunye nokuguqulwa, igalelo kwi-microprocessor, inkqubo ye-microprocessor ngokutsho eqokelelweyo ihlawulela ubushushu obuhambelanayo, uxinzelelo, ubushushu, uxinzelelo, ekugqibeleni ibalwe imveliso ye-carbon dioxide density kwisixhobo sokubonisa phantsi kovavanyo. Ibandakanya ubukhulu becala i-diode yokufunxa i-laser spectroscopy, i-photoacoustic spectroscopy, i-spectroscopy yokuphucula umgodi kunye ne-non-spectral infrared spectroscopy. Inzwa yokufunxa i-infrared ineenzuzo ezininzi, ubuntununtunu obuphezulu, isantya sohlalutyo olukhawulezayo, uzinzo oluhle, njl.
I-electrochemical CARBON dioxide gas sensor yinzwa yekhemikhali eguqula i-concentration (okanye i-partial pressure) ye-carbon dioxide ibe ngumqondiso wombane ngokusebenzisa i-electrochemical reaction. Ngokutsho kokufunyanwa kwemiqondiso yombane, uhlobo lwe-electrochemical luhlulwe lube luhlobo olunokwenzeka, uhlobo lwangoku kunye nohlobo lwe-capacitance. Ngokwendlela ye-electrolyte, kukho i-electrolyte engamanzi kunye ne-electrolyte eqinileyo. Ukusukela ngeminyaka yee-1970s, iisensom ze-electrolyte eziqinileyo ze-CARBON dioxide ziye zaxhatshazwa ngokubanzi ngabaphandi. Umgaqo we-electrolyte eqinileyo I-CARBON dioxide sensor yeyokuba i-gas-sensitive material ivelisa i-ion xa idlula kwi-gesi, ngaloo ndlela yenza amandla ombane we-electromotive kunye nokulinganisa amandla e-electromotive ukwenzela ukulinganisa iqhezu lomthamo wegesi.
Ukusebenzisa i-thermal conductivity eyahlukeneyo ye-CARBON diokside kunye nezinye iigesi ze-carbon dioxide gas sensor nazo zisetyenziselwa ukukhangela i-carbon dioxide sensor. Kodwa ubuntununtunu bayo buphantsi.
Umphezulu we-acoustic wave (saw) isivamvo serhasi kwikristale yepiezoelectric umaleko we-adsorption ekhethiweyo yegesi yefilimu enovakalelo yegesi, xa iifilimu ezibuthathaka zerhasi zinxibelelana negesi phantsi kovavanyo, zenza umgangatho wokugquma kwefilimu enobuntununtunu begesi, umlingiswa onje nge-viscoelasticity kunye utshintsho lwe-conductivity, lubangela ukuba i-surface acoustic wave frequency ye-piezoelectric crystal ikhukuliseke, ukubona ukuxinana kwerhasi. I-surface acoustic wave (SAW) inzwa yegesi luhlobo lwenzwa yobunzima. Ukongeza, i-quartz crystal microbalance gas sensor isebenza kumgaqo ofanayo kwi-SAW sensor, ngoko ke ikwayeyenzwa yobunzima. I-sensor ye-mass sensitive ngokwayo ayinakho ukukhetha kwigesi okanye umphunga, kwaye ukukhethwa kwayo njengenzwa yeekhemikhali kuxhomekeke kuphela kwiipropati zezinto zokugquma komhlaba.
I-semiconductor ye-carbon dioxide gas sensor ISEBENZISA inzwa yegesi ye-semiconductor njengenzwa yegesi, kunye ne-metal oxide semiconductor i-carbon dioxide gas sensor ineempawu zokuphendula ngokukhawuleza, ukuchasana okunamandla kwendalo kunye nesakhiwo esizinzile.
Ixesha lokuposa: Aug-14-2020
