SHT15 Kutentha ndi Chinyezi Sensor

Chithunzi cha SHT15 Temperature ndi Humidity Sensor

Kufotokozera Kwachidule:

SHT1x digito chinyezi sensor ndi reflow solderable sensor. Mndandanda wa SHT1x uli ndi mtundu wotsika mtengo wokhala ndi SHT10 humidity sensor, mtundu wokhazikika wokhala ndi SHT11 humidity sensor, komanso mtundu wapamwamba wokhala ndi sensa ya chinyezi ya SHT15. Amawunikidwa mokwanira ndipo amapereka kutulutsa kwa digito.

Titumizireni imelo

Tsatanetsatane wa Zamalonda

Zolemba Zamalonda

SHT15 Digital kutentha-chinyezi sensa (± 2%)

Masensa a chinyezi amaphatikiza zinthu za sensa kuphatikiza kusintha kwa ma siginecha pamapazi ang'onoang'ono ndikupereka kutulutsa kwa digito kokwanira.
Chinthu chapadera cha capacitive sensor chimagwiritsidwa ntchito poyeza chinyezi, pamene kutentha kumayesedwa ndi band-gap sensor. Ukadaulo wake wa CMOSens® umatsimikizira kudalirika komanso kukhazikika kwanthawi yayitali.
Masensa a chinyezi amalumikizidwa mosasunthika ku chosinthira cha 14-bit-analog-to-digital komanso mawonekedwe ozungulira. Izi zimabweretsa chizindikiro chapamwamba kwambiri, nthawi yoyankha mwachangu, komanso kusakhudzidwa ndi zosokoneza zakunja (EMC).

Mfundo yogwiritsira ntchito SHT15:

Chipchi chimakhala ndi capacitive polymer humidity sensitive element ndi chinthu chomwe chimakhudzidwa ndi kutentha chopangidwa ndi mphamvu zopanda mphamvu. Zinthu ziwiri zomwe zimakhudzidwa zimasintha chinyezi ndi kutentha kukhala ma siginecha amagetsi, omwe amayamba amakulitsidwa ndi chokulitsa chizindikiro chofooka, kenako ndi chosinthira cha 14-bit A/D, ndipo pomaliza ndi mawonekedwe amtundu wa digito wamawaya awiri kuti atulutse chizindikiro cha digito.

The SHT15 imawunikidwa mu chinyezi chosasintha kapena kutentha kosasintha musanachoke kufakitale. Ma calibration coefficients amasungidwa mu kaundula wa ma calibration, omwe amadziwonetsera okha zizindikiro kuchokera ku sensa panthawi ya kuyeza.

Kuphatikiza apo, SHT15 ili ndi 1 yotenthetsera chinthu chophatikizidwa mkati, chomwe chingawonjezere kutentha kwa SHT15 pafupifupi 5 ° C pomwe chotenthetsera chimayatsidwa, pomwe mphamvu yogwiritsira ntchito mphamvu ikuwonjezekanso. Cholinga chachikulu cha ntchitoyi ndikufanizira kutentha ndi chinyezi musanayambe kutentha.

Kuchita kwa zinthu ziwiri za sensa kumatha kutsimikiziridwa palimodzi. M'malo otentha kwambiri (> 95% RH), kutentha kwa sensa kumalepheretsa sensa condensation ndikuchepetsa nthawi yoyankha ndikuwongolera kulondola. Mukatenthetsa SHT15 kutentha kumawonjezeka ndipo chinyezi chapafupi chimachepa, zomwe zimapangitsa kusiyana pang'ono pamtengo woyezera poyerekeza ndi kutentha kusanayambe.

Magawo a magwiridwe antchito a SHT15 ndi awa:

1) Muyezo wa chinyezi: 0 mpaka 100% RH;
2) Kutentha kwa kutentha: -40 mpaka +123.8 ° C;
3) Kuyeza kwa chinyezi kulondola: ± 2.0% RH;
4) Kuyeza kuyeza kwa kutentha: ± 0.3 ° C;
5) Nthawi yoyankha: 8 s (tau63%);
6) Kuzama kwathunthu.

Mawonekedwe a SHT15:

SHT15 ndi chipangizo cha digito cha kutentha ndi chinyezi chochokera ku Sensirion, Switzerland. Chip chimagwiritsidwa ntchito kwambiri mu HVAC, magalimoto, zamagetsi ogula, kuwongolera basi ndi zina. Mawonekedwe ake akuluakulu ndi awa:

1) Phatikizani kutentha ndi kutentha kwa chinyezi, kutembenuka kwa chizindikiro, kutembenuka kwa A / D ndi mawonekedwe a mabasi a I2C kukhala chip chimodzi;
2) Kupereka mawaya awiri digito chosalekeza mawonekedwe SCK ndi DATA, ndi thandizo CRC kufala cheke;
3) Kusintha kosinthika kwa kuyeza kulondola komanso kusinthika kwa A/D;
4) Perekani malipiro a kutentha ndi kuyeza kwa chinyezi ndi ntchito yowerengera mame;
5) Itha kumizidwa m'madzi kuti muyezedwe chifukwa chaukadaulo wa CMOSensTM.