Inzwa yezinga lokushisa ne-Humidity ye-SHT15

Isithombe esifakiwe senzwa yezinga lokushisa ne-Humidity ye-SHT15

Incazelo emfushane:

Inzwa yokuswakama kwedijithali ye-SHT1x iyinzwa ethengiswayo egeleza kabusha. Uchungechunge lwe-SHT1x luqukethe inguqulo ebiza kancane enenzwa yokuswakama ye-SHT10, inguqulo evamile enenzwa yomswakamo ye-SHT11, kanye nenguqulo esezingeni eliphezulu enenzwa yokuswakama ye-SHT15. Zilinganiswe ngokugcwele futhi zinikeza okukhiphayo kwedijithali.

Thumela i-imeyili kithi

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

Inzwa ye-SHT15 Digital lokushisa-umswakama (±2%)

Izinzwa zomswakama zihlanganisa izici zenzwa kanye nokucutshungulwa kwesignali endaweni encane futhi zinikeze okukhiphayo kwedijithali okulinganiselwe ngokugcwele.
I-elementi yenzwa ye-capacitive eyingqayizivele isetshenziselwa ukukala umswakama ohlobene, kuyilapho izinga lokushisa likalwa ngenzwa ye-band-gap. Ubuchwepheshe bayo be-CMOSens® buqinisekisa ukwethembeka okuhle kakhulu nokuzinza kwesikhathi eside.
Izinzwa zomswakama zixhunywe ngaphandle komthungo kusiguquli se-14-bit-analog-to-digital kanye nesekethe yesixhumi esibonakalayo. Lokhu kubangela ikhwalithi yesiginali ephezulu, isikhathi sokuphendula esisheshayo, nokungezwani nokuphazamiseka kwangaphandle (EMC).

Isimiso sokusebenza se-SHT15:

I-chip iqukethe i-capacitive polymer humidity element ezwelayo kanye ne-elementi ezwelayo kukushisa eyenziwe ngezinto zegebe lamandla. Izakhi ezimbili ezizwelayo ziguqula umswakama nezinga lokushisa libe amasignali kagesi, aqala akhuliswe isikhulisi sesignali esibuthakathaka, bese kuba isiguquli esingu-14-bit A/D, futhi ekugcineni sibe isixhumi esibonakalayo sedijithali esinezintambo ezimbili ukuze kukhishwe isignali yedijithali.

I-SHT15 ilinganiswa endaweni enomswakamo noma izinga lokushisa elingashintshi ngaphambi kokuphuma embonini. Ama-coefficients wokulinganisa agcinwa kurejista yokulinganisa, ekala ngokuzenzakalelayo amasignali asuka kunzwa ngesikhathi senqubo yokulinganisa.

Ngaphezu kwalokho, i-SHT15 inesici sokushisa esingu-1 esihlanganisiwe ngaphakathi, esingakhuphula izinga lokushisa le-SHT15 cishe ngo-5°C lapho isici sokushisisa sikhanyiswa, kuyilapho ukusetshenziswa kwamandla nakho kunyuswa. Inhloso eyinhloko yalo msebenzi ukuqhathanisa amanani okushisa nomswakama ngaphambi nangemva kokushisa.

Ukusebenza kwama-elementi enzwa amabili kungaqinisekiswa ndawonye. Ezindaweni ezinomswakama ophezulu (>95% RH), ukushisa inzwa kuvimbela ukujiya kwezinzwa ngenkathi kunciphisa isikhathi sokuphendula futhi kuthuthukisa ukunemba. Ngemva kokushisisa i-SHT15 izinga lokushisa liyakhuphuka futhi umswakama ohlobene uyehla, okuholela kumehluko omncane kumanani akalwayo uma kuqhathaniswa nangaphambi kokushisisa.

Imingcele yokusebenza ye-SHT15 imi kanje:

I-1) Ibanga lokulinganisa umswakama: 0 kuya ku-100% RH;
2) Ibanga lokulinganisa izinga lokushisa: -40 kuya +123.8 ° C;
3) Ukunemba kwesilinganiso somswakama: ±2.0% RH;
4) Ukunemba kokulinganisa izinga lokushisa: ±0.3°C;
5) Isikhathi sokuphendula: 8 s (tau63%);
6) I-submersible ngokugcwele.

Izimpawu Zokusebenza ze-SHT15:

I-SHT15 iyi-chip yenzwa yedijithali yezinga lokushisa nomswakama evela e-Sensirion, eSwitzerland. I-chip isetshenziswa kabanzi ku-HVAC, izimoto, ugesi wabathengi, ukulawula okuzenzakalelayo neminye imikhakha. Izici zayo eziyinhloko zimi kanje:

1) Hlanganisa izinga lokushisa nokuswakama, ukuguqulwa kwesignali, ukuguqulwa kwe-A/D kanye ne-interface yebhasi ye-I2C ibe yi-chip eyodwa;
2) Nikeza i-serial interface yedijithali enezintambo ezimbili ze-SCK neDATHA, futhi isekele i-CRC transmission checksum;
3) Ukulungiswa okuhlelekayo kokunemba kokulinganisa kanye nesiguquli esakhelwe ngaphakathi se-A/D;
4) Nikeza isinxephezelo sezinga lokushisa kanye namanani okulinganisa umswakama kanye nomsebenzi wokubala wamazolo wekhwalithi ephezulu;
5) Ingacwiliswa emanzini ukuze ilinganiswe ngenxa yobuchwepheshe be-CMOSensTM.