Kufarira ma sensors emhando yemhepo uye volatile organic compound (VOC) kuona kwakakura zvakanyanya mumakore achangopfuura, zvichitungamirwa nekunetsekana nezve hutano uye kugara zvakanaka munzvimbo dzemukati. Kunyanya, iyo SGP30 neCCS811 modhi dzakazvimisikidza semabhenji mumapurojekiti emagetsi epamba, zviteshi zvemamiriro ekunze epamba, kutarisa kwezvakatipoteredza, uye zvemagetsi zvedzidzo.
Nekudaro, pane kushomeka kwakawanda kweruzivo rwunowanikwa, rwakajeka, uye rwechokwadi runobatsira runotsanangura, kuenzanisa, uye rwunokubatsira kuita sarudzo dzine ruzivo pakati pemasensa maviri aya.
Muchikamu chino, tinokuunzira ruzivo rwakakwana, rwakavimbika, uye rwechizvino-zvino paSGP30 uye CCS811 VOC sensors. Iwe unozoona mashandiro avanoita, maitiro avo akasiyana, mashandisiro anoshanda, matipi ekushandisa, tekinoroji maficha, uye ruzivo rusingawanzo kuwanikwa mune zvekutanga tsananguro dzechitoro. Kana iwe uchitsvaga dhairekitori rakadzama rekuti uwane zvakanyanya kubva pakuyera kwemhando yemhepo, ino ndiyo nzvimbo yako ...
Sei kuyera VOCs uye eCO2 mumba?
Kuvapo kweVOCs (volatile organic compounds) munzvimbo dzakavharwa kunowanzo kusanganiswa nemakapeti, fenicha, zvigadzirwa zvekuchenesa, zvitofu, utsi, uye zvimwe zvinhu zvemumba. Zvinhu izvi, kunyangwe zvichiita sezvisingakuvadzi, zvinogona kukanganisa hutano hwevanhu nekufamba kwenguva, zvichikonzera matambudziko ekufema, kusawirirana, kana kutemwa nemusoro.
Kuyera eCO2 (carbon dioxide yakaenzana) uye TVOC mazinga akakosha pakuita sarudzo nezve mhepo, kuvandudzwa kwemhepo, nekuvandudza kunyaradza kwezvakatipoteredza.
Kuunza iyo SGP30 uye CCS811 sensors
Iyo SGP30 neCCS811 idhijitari sensors inokwanisa kuyera VOC kutariswa uye nekupa eCO2 fungidziro, kufambisa yemukati yemukati yemhando yekutarisa mumagetsi uye mapurojekiti eIoT. Mamodheru ese ari maviri anogadzirwa nemakambani anozivikanwa (Sensirion yeSGP30 neAMS yeCCS811) uye anowirirana nechero azvino ano microcontroller nekuda kwedhijitari interfaces.
- SGP30: Yakanyatsobatanidzwa yakawanda-pixel sensor, ine MOX (simbi oxide) tekinoroji uye yayo microcontroller. Inoshandiswa zvakanyanya pakurongeka kwayo uye nyore kwekubatanidza.
- CCS811: Digital sensor ine MOX tekinoroji uye eCO2 fungidziro, inoshandiswa zvakanyanya mumasisitimu ekushandisa yakaderera uye ine yakanakisa mhando / mutengo reshiyo.
Kushanda uye pasi tekinoroji
Masensa ese ari maviri anoshandisa tekinoroji yeMOX, iyo ine diki chip yakavharwa nesimbi oxide zvinhu (kazhinji tin dioxide). Kana maVOC ari mumhepo asangana nenzvimbo inoshanda, anoshandura kuramba kwayo kwemagetsi, zvichibvumira kuwanda kwemakomisheni aripo kuti apinzwe.
Iyo SGP30 inomira kunze kwekubatanidza akawanda sensor zvinhu mupakeji imwechete. Izvi zvinokupa hukuru hukuru hwekuziva maitiro uye kuenzanisa mhando yemhepo nenzira yakagadzikana. Iyo CCS811, kune rumwe rutivi, inoshandisa chiyero chekuyera chakafanana uye inokwanisa kunyatso kudzorera TVOC uye eCO2 kuverenga, kunyangwe paine zvimwe zvisingakwanisi zvichienzaniswa neSGP30.
Akakosha tekinoroji maficha eSGP30
- Yakazara dhijitari, I2C yekubatanidza, inoenderana ne3.3V uye 5V.
- Yakajairika kuyerwa kurongeka kwe15% pamitengo inoratidzwa.
- Inokwanisa kuona eCO2 kutariswa kubva pa0 kusvika 60.000 ppm.
- TVOC kuyerwa kubva 0 kusvika 60.000 ppb (zvikamu pabhirioni).
- Hazvidi kutambanudza kweI2C wachi, kufambisa kutaurirana nema basic microcontrollers.
- Inosanganisira microcontroller yemukati iyo inotarisira kudyisa, kuverenga uye muripo wezviyero.
- Inobvumira kururamisa zvichibva pane zvinozivikanwa masosi, iyo inobvumira kuti humwe hunhu hwakavimbika huwanikwe munguva refu.
- Inopa muripo wekunyorova kukuverenga zvakanaka, inoda imwe yekunze humidity sensor.
Chinhu chakakosha ndechekuti chiyero che eCO2, mune iyi sensor uye muCCS811, fungidziro yakavakirwa zvakanyanya pakusangana kwehydrogen (H2) yakaonekwa. Ndiko kuti, haisi chiyero chakananga che CO2, asi kukosha kwakaverengerwa kunogona kushandiswa kutarisa maitiro ezvakatipoteredza uye kuaenzanisa, asi haakodzeri kushandiswa kwema laboratori kana tsvakurudzo chaiyo.
Zvakanakira uye mashandisirwo eiyo SGP30
- Kuvimbika kwechiyero uye kugadzikana nekuda kweayo akawanda-sensor architecture.
- Yakanakira kutarisa mhando yemhepo mudzimba, mahofisi, cubicles echikoro, marabhoritari, nezvimwe.
- Inoshandiswa zvakanyanya mudzimba otomatiki masisitimu uye DIY mamiriro ekunze zviteshi.
- Kubatanidzwa kuri nyore nemapuratifomu akadai seArduino, ESP32, Raspberry Pi uye zvakafanana.
- Maraibhurari esoftware anowanikwa mumitauro mizhinji.
- Inosanganisira dhayagiramu, mienzaniso yekubatanidza uye rutsigiro pamapuratifomu ehunyanzvi.
Misiyano yakakosha pakati peSGP30 neCCS811
Kunyangwe ese masensor achigovana musimboti wakafanana, pane mimwe misiyano yakakosha yekuchengeta mupfungwa kana uchisarudza kuti ndeipi yekushandisa mupurojekiti yako:
- Iyo SGP30 haidi masaini ekutambanudza wachi., chinhu chinorerutsa zvikuru kubatana nemamicrocontrollers asingatsigire rudzi urwu rwekutaurirana.
- Iyo CCS811 ingangoda zvimwe zvekuwedzera zvehardware kuti ive nechokwadi chekugadzikana kweI2C kutaurirana. kunyangwe iwe uchishandisa mabhodhi ekutanga kana minimalist masisitimu.
- Panyaya yekurongeka, ese ma sensors anopa chiratidzo asi chakavimbika kukosha kwekutarisisa kwezvakatipoteredza., iine SGP30 pamberi zvishoma mukugadzikana uye kureruka kwekugadzirisa nekuda kweiyo yemukati microcontroller.
- Muzviitiko zvese izvi, iyo eCO2 referensi inoverengerwa uye haienderane neiyo chaiyo CO2 kuyerwa. zvichibva pane optical kana kemikari sensors yakanangana negasi iri.
Chiyero uye calibration siyana
Masensa ese ari maviri anopa akadzama TVOC (muzvikamu pabhirioni) uye eCO2 (muzvikamu pamiriyoni) kukosha. Iyo yakajairwa renji yevaviri iri pakati pe0 ne60.000, kunyangwe munzvimbo dzakajairwa dzepamba nehofisi, tsika dzeTVOC dzinowanzorekodhwa pazasi pe1.000 ppb uye eCO2 hunhu huri pakati pe400 ne2.000 ppm.
Kuti uwane huroyi hwakanyanya, kunyanya kana huchishandiswa kuzvidzidzo zvezvakatipoteredza, zvakakosha kuenzanisa sensor uchishandisa inozivikanwa masosi. Iyi calibration inotsiva kutsauka kudiki kwakabatana nemaitiro ekugadzira uye kuchembera kwe sensor.
Kubatanidzwa kweprojekiti uye kuenderana
Ose ari maviri SGP30 neCCS811 akabatanidzwa mumabhodhi ebudiriro kubva kune ane mukurumbira mabhureki akadai seAdafruit, SparkFun, nemamwe, zvichiita kuti zvive nyore kubatanidza mumapurojekiti eDIY. Iwo anowanzo kuisirwa padiki maPCB anosanganisira voltage regulator uye logic level converter, inobvumira yakananga kubatana kune 3.3V kana 5V microcontrollers.
Iyo I2C protocol inosarudzirwa ese ma sensors, kuve nechokwadi chekuenderana nechero chero chikuva chazvino. Pamusoro pezvo, nharaunda huru dzakavakomberedza dzinovimbisa akagadzirira-kushandisa-maraibhurari uye mienzaniso yekodhi, pamwe nemagetsi schematics uye zviwanikwa zvekudzidzisa pamapuratifomu seGitHub kana Fritzing.
Zvakanakira humidity muripo
Chinhu chinowanzo furatirwa, asi chakanyanya kukosha, chimiro iko kurudziro yehunyoro hwepamhepo pazviyero zvezvinoputika organic komisheni. Kuti uwane kurongeka kwepamusoro-soro, iyo SGP30 inobvumira muripo wekunyorova kuti ugadzirwe nekutumira %RH (relative humidity) kukosha pamusoro pebhazi reI2C.
Nenzira iyi, kana uine imwe yekuwedzera humidity sensor, unogona kugadzirisa zviyero uye kuderedza zvikanganiso zvinokonzerwa nekusiyana kwemhepo.
Kukanganisa uye maitiro akanaka ekushandisa
Izvo zvakakosha kuyeuka kuti MOX sensors, nepo yakanakira mafambiro uye mabhenji, inoratidza kumwe kusiyanisa muzviyero. Naizvozvo, pakushandisa kwakakosha, periodic calibration inodiwa, uye kana chinangwa chiri chekutarisa hunhu hwemhepo padanho resainzi kana rekutonga, ma sensor optical akanyatso kutsaurirwa kuyera CO2 inofanira kushandiswa.
Kune ruzhinji rweimba, dzidzo, uye kudzora kwezvakatipoteredza zvikumbiro, zvisinei, ese SGP30 neCCS811 zvinopa inoshanda, inodhura, uye inowanika nyore mhinduro. Simba ravo rekushandisa ishoma uye ivo vanogona kushanda 24/7 vane mashoma ekugadzirisa zvinodiwa.
Zvinyorwa uye zviwanikwa zviripo
Rimwe remasimba makuru eaya masensa magwaro akakura aripo. Kubva pamazano ekubatanidza, nhanho-ne-nhanho zvinyorwa, mienzaniso mumitauro yakasiyana-siyana yekuronga, kune zviwanikwa zvakaita seFritzing kana EagleCAD yekugadzira yako PCB. Zvigadzirwa zvakaita seAdafruit uye SparkFun zvakashanda nesimba kuita kuti ecosystem ive nyore kushandisa, ichipa zvidzidzo, maforamu ekutsigira, uye mavhidhiyo ekuratidzira.
Iwo maraibhurari anowanikwa eArduino, ESP8266, ESP32, MicroPython, nezvimwewo, anokutendera kuti utore mukana weiyo sensor ingangoita kubva paminiti yekutanga, nemienzaniso yekuyera-chaiyo-nguva, kutema data, uye graphical kuratidzwa. Zvese izvi zvinobvumira vese vanotanga uye nyanzvi kuti vakurumidze kufambisira mberi mapurojekiti avo pasina kuisa nguva yakawandisa mukugadziriswa kwehunyanzvi.
Masensa aya anokurudzirwa ani?
Aya ma sensors akakwana kune zvemagetsi hobbyists, vagadziri, vadzidzi, vadzidzisi, uye kunyangwe nyanzvi dzeinjiniya kwezvakatipoteredza vachitsvaga mhinduro iri nyore yekutarisa mafambiro uye kusiyanisa kwemukati mhepo mhando. Iwo zvakare akakwana kana iwe uchida kubatanidza yambiro sisitimu (semuenzaniso, kudzora otomatiki kufefetedza), kurekodha data yezvakatipoteredza, kuita zvidzidzo zvekirasi, kana kutarisa mamiriro ekunze muhofisi.
Nekuda kwehukuru hwavo hudiki uye nyore kushandisa, vanogona kuiswa zvine hungwaru chero kupi, kubva kubhokisi remagetsi kuenda kune yakadhindwa 3D. Uye nekupihwa mutengo wavo wakaderera, zvinogoneka kuisa masensa akati wandei panzvimbo dzakasiyana mumba, hofisi, kana bhizinesi kuti uwane yakazara mepu yezvakatipoteredza.
Kusarudza iyo yakanakira sensor yepurojekiti yako
Kunyangwe ese masensor ari maviri akakwana kune akawanda mapurojekiti, kusarudza iyo yakakodzera kwazvo zvinoenderana nezvakati wandei zvinhu:
- Kureruka uye kusimba kwekubatanidza: Iyo SGP30 inowanzo kufarirwa mumapurojekiti uko kuvimbika kwakanyanya kunodiwa uye matambudziko neI2C haadiwe.
- Kuwanikwa uye mutengo: Iyo CCS811 inofarirwa zvakanyanya nekuda kweiyo yakanaka mutengo-kuita reshiyo uye huwandu hukuru hwemabhodhi anowirirana anowanikwa pamusika.
- Kururama uye kuenzanisa zvinodiwa: Kana iwe uchitsvaga kurongeka kwakanyanya uye kugona kutsiva mhedzisiro yezvakatipoteredza, iyo SGP30 inomira pamusoro peCCS811.
Masensa ese ari maviri anogona kugarisana zvakanaka muhurongwa humwe, achisimudzira masimba eimwe neimwe kuita zvidzidzo zvekufananidza kana kuchinjika-kusimbisa.
Pakupedzisira, zvose SGP30 uye CCS811 vane democratized kuwana kwekutarisa kwehutano hwemhepo, kufambisa mapurojekiti ayo anongovandudza nyaradzo asi anogonawo kuva nemigumisiro yakanaka pahutano hurefu. Kunzwisisa maitiro ayo, zvisingakwanisi, uye kugona ndiyo kiyi yekuwana zvakanyanya kubva mazviri, uye ikozvino une ruzivo rwese rwaunoda kusarudza uye kubatanidza iyo modhi inonyatsokukodzera iwe.
