El I-BME680 iyinzwa eguquguqukayo kakhulu eyakhiwe yi-Bosch Sensortec. Le ngxenye encane ihlanganisa izinzwa eziningi kudivayisi eyodwa evumela izinga lokushisa lokulinganisa, ingcindezi ye-barometric, umswakama ohlobene namagesi. Ngenxa yale nhlanganisela yamakhono, ilungele izinhlelo zokusebenza zokuqapha imvelo, i-inthanethi Yezinto (IoT), kanye nezinhlelo zokulawula izinga lomoya zasendlini.
I-BME680 igqamile hhayi kuphela ngenani lezinto eziguquguqukayo engazikala, kodwa nakwayo ukunemba okuphezulu kanye nokusetshenziswa kwamandla okuphansi, okwenza kube ukukhetha okudumile kumadivayisi aphathwayo anamandla ebhethri. Kusukela ezinhlelweni ze-HVAC kuya kuma-drone autopilots, le nzwa izuze ukuthambekela ezimbonini ezihlukahlukene ngenxa yekhono layo lokuhlinzeka ngedatha ethembekile ngefomethi ehlangene.
Izici zobuchwepheshe ze-BME680
Le nzwa ye-Bosch yakhelwe ukumboza anhlobonhlobo izinhlelo zokusebenza zasekhaya nezimboni. Ukuqala ngokunikezwa kwamandla ayo, i-BME680 isebenza kububanzi be 1.2 kuya ku-3.6V, okwenza ihambisane nawo womabili amabhodi okuthuthukisa njenge-Arduino noma i-ESP32, kanye nezinye izilawuli ezincane.
Mayelana nokuxhumana, ungasebenzisa kokubili ibhasi ledatha NGI (kufika ku-3.4 MHz) njengebhasi SPI (3 noma 4 izintambo ngesivinini esingafika ku-10 MHz). Lokhu kwenza kube lula ukuhlanganisa nezinhlobonhlobo zamadivayisi nendawo.
- Ibanga lokucindezela: kusuka ku-300 kuya ku-1100 hPa, okuvumela ukunemba kokuphakama okungafika kumitha elingu-1.
- Ukusebenza kwe-Temperatura: kusuka ku-40°C kuya ku-85°C, okwenza ifanelekele izimo zemvelo ezimbi kakhulu.
- Ibanga lomswakamo: ukusuka ku-0% ukuya ku-100% umswakama ohlobene, onokulungiswa okuhle kakhulu kuka-0.008% RH.
Ukwengeza, i-BME680 inokuncane Inzwa ye-MOX (i-metal oxide). ekwazi ukubona izinto eziphilayo ezishintshashintshayo (VOC) namagesi afana ne-carbon monoxide, i-ethanol ne-acetone. Nokho, kubalulekile ukuqaphela ukuthi le nzwa ayilinganisi amagesi ngamanye, kodwa kunalokho ilinganisela ikhwalithi yomoya iyonke ngokusekelwe enanini eliphelele lama-VOC akhona.
Amamodi okusebenza kanye nokusetshenziswa kwamandla
Esinye sezici eziphawuleka kakhulu ze-BME680 ukuthi ukusetshenziswa kwamandla okuphansi. Lokhu kusetshenziswa kuyehluka phakathi kwezindlela zokusebenza. Kumodi yokulala, ukusetshenziswa kungu-0.15 µA kuphela, kuyilapho kumodi esebenzayo kuhlala phakathi kuka-3.7 µA no-12 mA, kuye ngamapharamitha akalwayo. Uma kuqhathaniswa, ukusetshenziswa kwamandla uma kulinganiswa umswakama kuphela, ingcindezi nezinga lokushisa cishe ku-3.7 µA, kanti uma ukukalwa kwegesi kwenziwa kusebenze, kungafinyelela ku-12 mA.
Inzwa futhi isekela izindlela ezahlukahlukene zokulinganisa, iqinisekisa ukuguquguquka kokulungisa izinhlelo zokusebenza nezimo ezahlukahlukene. Isibonelo, ezinhlelweni zokusebenza lapho kudingeka izinga eliphezulu lokuvuselela, i-BME680 ingasebenza ngesivinini se I-157 Hz, ngenkathi kumodi yokusetshenziswa okuphansi imvamisa iphansi kakhulu, ithuthukisa impilo yebhethri.
Izicelo ze-BME680
I-BME680 isetshenziswe ezinhlobonhlobo zezinhlelo zokusebenza ngenxa yokuguquguquka kwayo nokunemba kwayo. Ezinye zezindawo eziyinhloko ezisetshenziswayo zihlanganisa:
- Ukuqapha kwemvelo: Isetshenziswa kumadivayisi akala izimo zezulu zangaphakathi, njenge-HVAC namasistimu ekhwalithi yomoya ezindlini nasemahhovisi.
- I-inthanethi Yezinto (IoT): Ngenxa yokusebenzisa kwayo okuphansi namandla okulinganisa amapharamitha amaningi, i-BME680 ilungele amadivayisi azimele kumanethiwekhi e-IoT.
- Amasistimu we-Altimetry: Le nzwa isetshenziswa kuma-drones nakwezinye izimoto zasemoyeni ezingenamuntu (UAVs) ukuze kuhlinzekwe izilinganiso zokuphakama ezinembile, ngokuchezuka kwemitha elingu-1 kuphela.
- I-Automation yasekhaya: Ezinhlelweni ezishintshayo zasekhaya, i-BME680 ingahlanganiswa ukuze kuthuthukiswe izinga lomoya ngokusekelwe ezimeni zemvelo zekamelo ngalinye.
Ukuqhathanisa nezinye izinzwa
I-BME680 iwukuvela okuqondile kwezinye izinzwa ze-Bosch, ezifana nezaziwayo I-BME280, noma inzwa yokucindezela I-BMP280. Ngalo mqondo, ukunemba nomthamo wokulinganisa we-BME680 uyibeka ngaphezu kwalezi zinhlobo zangaphambilini. Nakuba i-BMP280 kanye ne-BME280 nazo zinemba kahle kakhulu ekucindezelweni nasekukalweni kwezinga lokushisa, I-BME680 yengeza amathuba okulinganisa ama-volatile organic compounds (VOC), okufaka uhlelo lokusebenza amanye amamodeli angeke alufake.
Ngakolunye uhlangothi, uma siqhathanisa i-BME680 nezinzwa zomswakama ezifana ne I-DHT21 o I-DHT22, i-BME680 igqama ngokunemba okukhulu nokusebenzisa izinto ezihlukahlukene, njengoba ihlanganisa imisebenzi eminingana kudivayisi eyodwa kuyilapho i-DHT ikala izinga lokushisa nomswakama kuphela.
Umdwebo womhlangano oyisisekelo
Enye inzuzo yenzwa ye-BME680 ubulula bokuxhumeka kwayo ku-microcontroller. Ezimweni eziningi, i-interface isetshenziswa NGI, okudinga imigqa emibili kuphela yokuxhumana, okwenza ukufakwa kube lula kakhulu. Ukunikezwa kwamandla ngebanga likagesi eliphakathi kuka-1.2 no-3.6 V, okuvumela ukuxhumana okuqondile nezinkundla ezifana ne-Arduino noma i-ESP32.
Isibonelo esiyisisekelo sokuxhuma ku-Arduino kungaba:
- Iphinikhodi ye-SDA (Idatha): ixhunywe ku-pin A4 ye-Arduino.
- Iphinikhodi ye-SCL (Iwashi): ixhunywe ku-pin A5.
- I-GND (iphansi) kuphinikhodi ye-GND ye-Arduino.
- I-Vdd (amandla): ukuze uphine i-3V3 ye-Arduino.
Ngaphezu kwalokho, kukhona imitapo yolwazi ukusiza ukulawula inzwa, ukugqamisa Isithelo noma isitolo sezincwadi esisemthethweni ngokwaso Bosch. Zombili izinketho zikuvumela ukuthi uthole ukufundwa ngokunembile futhi ube nezibonelo ezitholakala kumakhosombe azo ukuze kusetshenziswe ngokushesha.
I-BME680 idinga isikhathi esifushane ukushisa, ikakhulukazi ukuthola izilinganiso ezinembile ze-VOC. Ngaphansi kwezimo ezijwayelekile, umenzi uncoma ukulinda imizuzu engama-30 ukuthola ukufundwa okuzinzile, futhi uma inzwa isuswa endaweni eyodwa iye kwenye, amahora angama-48.
Ngekhono layo lokuhlinzeka ngemininingwane enembile yesikhathi sangempela yezemvelo, i-BME680 isalokhu ingenye yezinketho ezinamandla kakhulu neziphelele ezitholakala emakethe yezimo zezimboni nezasekhaya. Ukuguquguquka kwayo, kanye nokusetshenziswa kwayo okuphansi kwamandla, kuyenza ibe ithuluzi elibalulekile kumaphrojekthi we-IoT, izinhlelo zesimo somoya kanye namadivayisi aphathwayo wokuqapha imvelo.
Uma okufunayo inzwa ekwazi ukumboza okuguquguqukayo okuningi ngokunemba okukhulu nokusetshenziswa okuphansi, i- I-BME680 Impela inketho enconyiwe yanoma iyiphi iphrojekthi edinga ukukala ikhwalithi yomoya nokunye.