I-Thermostat enesibonisi se-LED

Uhlelo lusetshenziselwa ukugcina izinga lokushisa elithile ekamelweni elilawulwayo. Esixazululweni esihlongozwayo, izinga lokushisa lokushintsha nokucisha le-relay isethwe ngokuzimela, ngenxa yokuthi amathuba okusetha angenamkhawulo. I-thermostat ingasebenza kokubili kumodi yokushisisa kanye nakumodi yokupholisa nganoma yiliphi ibanga le-hysteresis. Ngokuklama kwayo, kuphela ngokusebenzisa izakhi kanye nenzwa yokushisa engenamanzi eyenziwe ngomumo eyenziwe yasetshenziswa. Uma uthanda, konke lokhu kungangena ku-Z-107 case, eklanyelwe ukufakwa ebhasini elidumile le-TH-35 "kagesi".

Umdwebo ohleliwe we-thermostat kuboniswe emkhiwaneni. 1. Isistimu kufanele inikezwe amandla kagesi angashintshi angaba ngu-12 VDC, exhunywe kusixhumi X1. Kungaba yinoma yimuphi umthombo wamandla onomthwalo wamanje okungenani ongu-200 mA. I-Diode D1 ivikela isistimu kusuka ku-polarity ehlehlayo ye-voltage yokufaka, futhi ama-capacitor C1 ... C5 asebenza njengesihlungi se-mains. I-voltage yangaphandle yokufaka isetshenziswa kusilawuli u-U1 uhlobo 7805. I-thermometer ilawulwa yi-microcontroller ye-U2 ATmega8, ivalwe isignali yewashi yangaphakathi, futhi umsebenzi wenzwa yokushisa wenziwa uhlobo lwesistimu DS18B20.

Isetshenziselwa ukuxhumana nomsebenzisi isibonisi se-LED enamadijithi amathathu. Ukulawula kwenziwa nge-multiplexed, ama-anode okukhishwa kwesibonisi anikwa amandla ama-transistors T1 ... T3, futhi ama-cathode alawulwa ngokuqondile echwebeni le-microcontroller ngokusebenzisa ukukhawulela ukumelana no-R4 ... R11.

Ukufaka izilungiselelo nokulungiselelwa, i-thermostat ifakwe izinkinobho S1 ... S3. I-relay isetshenziswe njengesistimu yokuphatha. Uma ushayela umthwalo osindayo, naka umthwalo koxhumana nabo abadluliswayo namathrekhi e-PCB. Ukwandisa umthamo wabo womthwalo, ungathayela amathrekhi noma ubeke bese ufaka ucingo lwethusi kuwo.

i-thermostat kufanele ihlanganiswe emabhodini esifunda amabili aphrintiwe, umdwebo womhlangano oboniswe ku-Figure 2. Umhlangano wesimiso ujwayelekile futhi akufanele ubangele ubunzima. Kwenziwa njengokujwayelekile, kuqala ngama-soldering resistors nezinye izinto ezinosayizi omncane ebhodini lomshayeli, futhi kuphele ngokufakwa kwama-electrolytic capacitors, i-voltage stabilizer, ama-relays kanye nokuxhumeka kwesikulufa.

Sikhweza izinkinobho kanye nesibonisi ebhodini lamaphuzu. Kulesi sigaba, futhi okungcono ngaphambi kokuhlanganisa izinkinobho nokubonisa, kuyadingeka ukunquma ukuthi kufanele i-thermostat izofakwa ku-Z107 yezindlu.

Uma i-thermostat izokhwezwa njengokujwayelekile, njengasesithombeni sesihloko, kusho ukuthi kwanele ukuxhuma womabili amapuleti nge-engeli bar yezikhonkwane zegolide. Ukubuka kwamapuleti axhunywe ngale ndlela kuboniswe esithombeni 3. Kodwa-ke, uma sinquma ukufaka i-thermostat esimweni se-Z107, njengesithombeni 4, khona-ke umdwebo owodwa olula we-38 mm onezikhonkwane zegolide ezinesokhethi lesifazane kufanele ube. esetshenziswa ukuxhuma amapuleti womabili. Gcoba izimbobo ezintathu kuphaneli engaphambili yekesi ukuze uthole izinkinobho S1...S3. Ukuze wenze sonke isakhiwo sizinze ngemva kokuhlanganiswa, ungasiqinisa futhi ngocingo olucwecwe ngesiliva (isithombe 5), amaphedi angaphezulu aphumayo azosiza lapha.

Isinyathelo sokugcina uxhumano lwenzwa yokushisa. Kulokhu, isixhumi esimakwe i-TEMP sisetshenziswa: intambo emnyama yenzwa ixhunywe ephinikhodi ebhalwe ukuthi GND, ucingo oluphuzi ephinikhodi elimakwe ngo-1 W, kanye nentambo ebomvu ephinikhodi ebhalwe ukuthi VCC. Uma ikhebuli imfushane kakhulu, inganwetshwa kusetshenziswa ipheya esontekile noma ikhebuli yomsindo evikelekile. Inzwa exhunywe ngale ndlela isebenza kahle ngisho nangobude bekhebula obungaba ngu-30 m.

Ngemva kokuxhuma ugesi, ngemva kwesikhashana isibonisi sizobonisa inani lokushisa elifundwayo njengamanje. Ukuthi i-relay ye-thermostat inamandla yini kubonisa ukuba khona kwechashazi kudijithi yokugcina yesibonisi. I-thermostat yamukela isimiso esilandelayo: kwimodi yokushisa, into ipholile ngokuzenzakalelayo, futhi kumodi yokupholisa, ishisa ngokuzenzakalelayo.