Mholweni emini nje! Eli nqaku libonisa ingxaki yeenzwa zomgunyathi, ukulinganiselwa kwezixhobo ezikhoyo ezisebenzisa ezi zinzwa kunye nesisombululo kule ngxaki.
Umthombo: ali-trends.ru
Ngaphambi kwam, kwakubhaliwe malunga neenzwa zomgunyathi . Umahluko phakathi kweempawu zomgunyathi kunye nezoqobo:
- Inzwa, nokuba iqhagamshelwe kufutshane, iphendula kwimowudi yamandla eparasitic ngokungaqinisekanga, rhoqo emva kwexeshana.
- Kwimowudi yamandla e-parasitic, inqanaba eliphezulu lithatha ixesha elide ukuba libuyiselwe (ungayilinganisa nge-microcontroller okanye ubukele i-oscillogram)
- ukusetyenziswa kwangoku kuphezulu kakhulu kune-microamps ezininzi (i-GND kunye ne-VCC ukukhupha, i-DQ nge-microammeter ukuya ku-5 volts)
- Emva kwenkqubo yobalo (0xF0), abenzi boluvo abaphenduli kumyalelo wokufunda we-scratchpad (0xBE)
- Ubushushu obufundwa kwi-scratchpad emva kokuba amandla enziwe ngaphandle komyalelo wokulinganisa ahluka kwi-85,0 degrees.
- Amaxabiso e-scratchpad kwizikhundla ze-5 kunye ne-7 awahambelani no-0xFF kunye no-0x10.
- Amaxabiso obushushu (kwizikhundla ezibini zokuqala ze-scratchpad) afundwe emva kokutshintshwa kokuqala kwe-sensor ye-de-energized ngaphandle komyalelo wokulinganisa onikwe ngaphambili ukubuyisela ixabiso langaphambili, kwaye hayi i-50 05 (i-85.0 degrees).
Ngelishwa, andinayo i-oscilloscope, kwaye i-Galileosky BaseBlock Lite GPS tracker isebenze njengebhentshi yovavanyo.
Izinzwa zathengwa kubathengisi abahlukeneyo, kwaye ibhetshi enye kuphela esebenzayo ngenxa yamandla eparasitic. Kwathengwa amaqashiso ama-5 kuphela kumaqhekeza angama-50.
Ezinye azizange zisebenze ngenxa yamandla e-parasitic konke konke. I-terminal ayiboneleli ngamandla angaphandle kwi-sensor, kwaye ukufakwa kwenkqubo kwisithuthi kufuneka kwenziwe lula kangangoko kunokwenzeka.
Uluhlu lweengxaki
Ke, abenzi boluvo bathengiwe, kodwa ibhetshi enye kuphela esebenze ngokuchanekileyo, kwaye uphando kunye nokucwangciswa kwebhetshi entsha bekuya kuthatha ixesha elifanelekileyo, kwaye bekuya kuba nesiphumo sokugqithiswa kweendleko. Ngoko ke, ingxaki kwafuneka isonjululwe yodwa.
Ekubeni kuphela i-circuit ye-wire-wire isetyenzisiweyo, kuyimfuneko ukulungiselela ukunikezelwa kwamandla kwi-sensor evela kwintambo yesignali, oko kukuthi, ukulungelelanisa amandla e-parasitic. Ndiququzelele amandla eparasitic ngokwesikimu silandelayo:
Kulo cwangciso, ukusebenza kwamandla e-parasitic kuphuculwe, kodwa kwangaxeshanye, kuhlala kunokwenzeka ukudibanisa amandla angaphandle. Kule meko, umzobo wokudibanisa utshintsha kancinci: xa udibanisa ngamandla e-parasitic, ucingo lweVcc ayisetyenziswanga.
Emva kokudibanisa isekethe ngokunyuswa komphezulu, i-sensor yafunyanwa yi-terminal ene-capacitor umthamo we-1 µF. Ukuphunyezwa kobuninzi, iibhodi ezinephaneli ezineebhodi zamandla eparasitic ziyilwe kwaye zayalelwa:
Indawo enomdla: Abavelisi banokusebenzisa i-adhesive eshushu enyibilikayo okanye i-silicone ukutywina inzwa. Kwimeko yokuqala, unokutshisa umkhono, ususe inzwa, ufake ibhodi, uyibuyisele kumkhono kwaye uyigcwalise ngeglue eshushu ngakumbi. Kwimeko yesibini, oku akusayi kusebenza, kwaye kwafuneka ndithengise ibhodi kufutshane ne-sensor, ndiyigcwalise ngeglue eshushu kwaye ndibeke i-heat shrink, ngenxa yoko ibonakala ngathi:
isiphelo
Apha ndingathanda ukubongoza abavelisi besixhobo ukuba bathathele ingqalelo eli nqaku kwiimveliso zabo, kunye nabathengisi ukuba bajonge abenzi boluvo ngaphambi kokuba bathengise okanye bangajongani nomthengisi konke konke ukuba babonelela ngeenzwa zomgunyathi, kunye nabasebenzisi ukuqaqambisa esi sihloko kwizimvo, iileta. okanye izicelo.
umthombo: www.habr.com