Yintoni iseli yomthwalo kwaye isebenza njani imodyuli ye-HX711?: Isikhokelo esipheleleyo

Ihlabathi lezixhobo, iirobhothi, kunye neenkqubo zokulinganisa ziye zavela kakhulu kwiminyaka yakutshanje enkosi ngokudityaniswa kwezinzwa kunye neemodyuli ze-elektroniki eziququzelela intsebenziswano phakathi kwehlabathi lomzimba kunye ne-microcontrollers. Enye yezinto eziphambili kule revolution yetekhnoloji yiseli yomthwalo kunye neqabane layo eliqhelekileyo, imodyuli ye-HX711 yeamplifier. Zombini ziye zaba zizinto ezibaluleke kakhulu kwabo bafuna ukwakha izikali zedijithali ezichanekileyo, iinkqubo zokulawula ubunzima, kunye nazo zonke iintlobo zeeprojekthi apho imilinganiselo yokulinganisa kunye nobunzima iyimfuneko.

Ukuba ukhe wazibuza Kunokwenzeka njani ukuguqulela amandla asetyenziswe kwinto kwixabiso lombane elikwazi ukutolikwa yi-Arduino, i-ESP8266 okanye nayiphi na enye i-microcontroller?Kweli nqaku, uya kufumana eyona ngcaciso ipheleleyo, elula, kwaye ethe ngqo. Uya kufunda ngokweenkcukacha ukuba yintoni iseli yomthwalo, isebenza njani, iintlobo zayo, indlela yokuyiqhagamshela kwimodyuli ye-HX711, kunye nendlela ongazithatha ngayo iiprojekthi zakho zokulinganisa uye kwinqanaba elilandelayo ngokudibanisa i-hardware kunye nesoftware njengengcali yokwenyani.

Yintoni iseli yomthwalo kwaye kutheni ingundoqo kumlinganiselo wobunzima be-elektroniki?

Omnye layisha iseli Yiyo, kwisiseko sayo esisisiseko, i-transducer eguqula amandla okanye uxinzelelo olufakwe kuyo ibe ngumqondiso wombane. Umgaqo wokusebenza ulele kwimeko yokwahluka kokumelana nombane xa iseli ikhubazekile phantsi kwesenzo somthwalo.. Yiyo loo nto zikwabizwa ngokuba iziguquli ngamandla.

Igama elithi transducer liqhelekile kuwe kuba, kwizinto zombane, licandelo elikwaziyo ukuguqula inani elibonakalayo (elifana noxinzelelo, isandi, okanye ukukhanya) libe luphawu oluqhubekekayo. Kule meko, iseli yomthwalo ibona amandla: xa usebenzisa ubunzima kuyo, ifumana i-deformation encinci, iphantse ingabonakali ekuboneni kokuqala, kodwa yanele ukuguqula ukuxhathisa kombane kwi-strain gauges equlethwe kuyo.

Las iigeji zoxinzelelo Zintliziyo yeseli yomthwalo. Ngamashiti okanye imisonto yezinto eziguquguqukayo ezibhityileyo kakhulu eziguqula ukuxhathisa kwazo ngokuxhomekeke kubude okanye ucinezelo olufunyanwa yimathiriyeli ezincanyathiselwe kuyo. Olu tshintsho, nangona luncinci, lunokubonwa kwaye lwandiswe lude lube luphawu lwamandla ombane oluthi, lufakwe kwidijithali ngokufanelekileyo, kuchaneka kumandla asetyenziswayo.

Ukuguqula ngempumelelo olu tshintsho lufihlakeleyo lube luphawu oluluncedo, iigeyiji zibekwe kuqwalaselo olubizwa Ibhulorho yeWheatstoneLe sekethe, i-classic kumlinganiselo wokuchasa, ivumela ukuchasana okuncinci ukuba kwandiswe kwaye kufumaneke uphawu oluhlukileyo. Ngaloo ndlela, ukulula okulula kwezinto kubangela ukuguqulwa koxinzelelo olunokulinganiswa kwaye luhambelane ngokuchanekileyo kunye nobunzima obusetyenzisiweyo.

Ayizizo zonke iiseli zomthwalo ezenziwe zilingana. Kukho iintlobo ezininzi:

• Iiseli zeHydraulic: Ngokusekelwe kuxinzelelo lolwelo ngepiston kunye necylinder.
• Iiseli zomoya: Basebenzisa uxinzelelo lomoya kwi-diaphragm, ukulinganisa ukuguqulwa okubangelwayo.
• Iiseli zegeji yoxinzelelo: Eyona nto ixhaphakileyo kwi-electronics kunye ne-robotics, ngenxa yokulula ukudibanisa kunye nokuchaneka.

Nangona kukho ezinye itekhnoloji (piezoelectric, capacitive, njl.), i iigeji zoxinzelelo Zizona ziqhelekileyo zisetyenziswa kwizikali zasekhaya kunye neenkqubo zokulinganisa i-industrial ngenxa yeendleko zabo, ukuthembeka kunye nokulula kokulinganisa.

Ukusebenza kwangaphakathi: Ibhulorho ye-Wheatstone kunye noMngeni weempawu ezibuthathaka

Into esisiseko sokuthatha inzuzo yokwahluka okuncinci ekuchaseni okuveliswa ziigeji yi Ibhulorho yeWheatstoneLe sekethi, eyaqanjwa ngenkulungwane ye-19, isekelwe kwibhalansi yezichasi ezine ezicwangciswe ngokwemilo yerhombus. Xa enye okanye ngaphezulu kwezi zixhathisi zitshintsha (njengoko kwenzeka kwigeyiji yoxinzelelo xa ikhubazekile), ibhulorho ayilungelelaniswa kwaye ivelise umahluko onokubakho ngokomlinganiselo wotshintsho.

Ngokwenza oko, Iseli yomthwalo eqhelekileyo iqulethe iigeji ezine zoxinzelelo ezicwangciswe kwimilenze yebhulorho yeWheatstoneXa usebenzisa amandla kwiseli, iigeji ezimbini zolula (ukwandisa ukuchasana kwazo) kunye ne-compress ezimbini (ukunciphisa). Ke, ibhulorho ikhulisa umahluko onokuthi ufunyenwe kwaye iphucule ubuntununtunu.

Phezu kwalo nje eli lungiselelo lichuliweyo, iinguqulelo zokuxhathisa zisekho incinci kakhulu. Ngokomzekelo, kwi-gauge ye-120 ohm, uxinzelelo olukhulu lunokutshintsha ukuchasana nge-0.12 ohms kuphela. Le mali incinci ibeka imingeni emibini: a izixhobo ze-elektroniki ezichanekileyo ukwahlula olu tshintsho kwaye, ukongeza, isiginali kufuneka yandiswe ngaphambi kokuba ifakwe kwidijithali kwaye iqhutywe yi-microcontroller, engenakukwazi ukubona izibonakaliso ezibuthathaka ngokuthe ngqo.

Kulapho ke Iamplifier yeHX711.

Imodyuli ye-HX711: ibhulorho phakathi kweseli yomthwalo kunye ne-microcontroller

El Imodyuli ye-HX711 Yisekethe encinci edibeneyo eyenza umsebenzi osisiseko kwiinkqubo zokulinganisa idijithali: yandisa, iimeko kunye nokuguqula umqondiso ofunyenwe kwiseli yomthwalo ube yidijithali. Ngele ndlela, Kuyenzeka ukuba ufumane imilinganiselo echanekileyo yobunzima kunye namandla okutolikwa yi-Arduino, ESP8266, PIC okanye nayiphi na enye i-microcontroller..

Ezinye zeempawu zayo eziphambili zezi:

• Ukuya kuthi ga kwisisombululo se-24-bit: ikuvumela ukuba ufumane i ukuchaneka okuphezulu kakhulu ekufundeni ubunzima.
• I-Analog-to-digital conversion (ADC): iguqula isignali ye-analog eyandisiweyo ibe lixabiso ledijithali elilungele ukusetyenzwa.
• Inzuzo enokucwangciswa: inokulungelelaniswa phakathi kwe-128x kunye ne-64x, ukuyivumela ukuba ihambelane nezicelo ezahlukeneyo.
• Ukusetyenziswa kwamandla aphantsi kakhulu: Ilungele usetyenziso oluphathwayo okanye iinkqubo ezisebenza ngebhetri.
• Ukuguquguquka kuqhagamshelwano: Inxibelelana ngezikhonkwane ezimbini zedijithali (iClock/SCK kunye neDatha/DT), efana ne-I2C okanye i-SPI protocol.
• Uluhlu lonikezelo lwamandla ukusuka kwi-2.6V ukuya kwi-5.5V: iyahambelana namaqonga ombane ahlukeneyo.

Enkosi kwezi mpawu, i-HX711 iye yaba yeyona Umgangatho we-de facto wokufundwa kweeseli zomthwalo kwiiprojekthi ze-DIY nakwicandelo lezoshishino, njengoko kwenza ubomi bube lula kakhulu kumphuhlisi: akufuneki ukuba bayile iisekethe zokukhulisa i-complex kwaye banokugxila ekuphuhliseni isofthiwe kunye nengqiqo yenkqubo yokulinganisa.

Imodyuli ye-HX711 ngokuqhelekileyo ineziqhagamshelo ezimbini eziphambili: enye yeseli yomthwalo kunye nenye ye-microcontroller. Umdibaniso usekwe kwiintambo ezine eziphambili:

• Ebomvu (E+, VCC): amandla okuvuselela amandla.
• Mnyama (E-, GND): amandla ombane ovuselelayo.
• Mhlophe (A-): igalelo lomqondiso ongalunganga (Imveliso -).
• Luhlaza (A+): igalelo lesiginali elungileyo (Imveliso +).

Ezinye iimodeli zongeza ucingo lwesihlanu (oluphuzi, YLW), oluhlala lusebenza njengesalathiso somhlaba okanye alusetyenziswanga kuqwalaselo oluqhelekileyo.

Layisha iintlobo zeeseli kunye neemodeli: indlela yokukhetha echanekileyo

Ukukhetha iseli yomthwalo efanelekileyo Iiseli zomthwalo zibalulekile ekufezekiseni ufundo oluchanekileyo kwiprojekthi yakho yokulinganisa. Iiseli zomthwalo ziyahluka ngokusekwe kumthamo wazo omkhulu, imo yomzimba, kunye novakalelo:

• Ubukhulu bomthamo: Kukho iiseli zomthwalo we-1kg, 5kg, 20kg, 50kg nangaphezulu. Ye ukuchaneka okungaphezulu, luluvo olulungileyo ukukhetha iseli enoluhlu oluphezulu olukufutshane kangangoko kubuninzi bobunzima besicelo sakho. Umzekelo, ukuba ufuna ubunzima ukuya kwi-4 kg, iseli ye-5 kg ​​ifanelekile. Ukusebenzisa i-20 kg yeseli kuloluhlu kuya kukunika ufundo olusezantsi lokuchaneka.
• Ubume boomatshini: Ezona zixhaphakileyo yimivalo yoxande yokunyuswa kwizikali zasekhitshini, kodwa ungaphinda ufumane i-S-shaped, disc, imodeli ye-double-beam, njl njl. Ngamnye uphendula ngcono kwiimeko ezahlukeneyo zobunzima.
• Umgangatho kunye novakalelo: Ukuchaneka kuya kuxhomekeka kumgangatho wee-gauges kunye nokwakhiwa kwangaphakathi. Iiseli ezisemgangathweni zibonelela ngeziphumo ezingcono kunye nokuhamba okuphantsi.
• Uhlobo lwebhulorho: I-HX711 inokusebenza kunye neeseli zebhulorho ezigcweleyo kunye nesiqingatha, kwaye ixhasa ukudibanisa ukuya kuthi ga kwiiseli ezimbini kulungiselelo lwebhulorho ezimbini.

Ukunyuswa kweseli nako kubalulekile. Qinisekisa ukuba ushiya indawo esembindini (indawo enovakalelo yebar) ingenamiqobo ukuze ikwazi ukonakala ngokufanelekileyo phantsi komthwalo, kwaye ulandele utolo ukuyifaka kwicala lamandla ozimisele ukuwalinganisa.

Uyilo lweMechanical kunye noQhagamshelo: Ungasidibanisa njani isikali sakho seDijithali nge-HX711

Ukuqhubela phambili ukuziqhelanisa, kubalulekile ukuqonda Indlela iseli yomthwalo kunye nemodyuli ye-HX711 idityaniswe ngayo ngokwasemzimbeni kwaye idityaniswe. La ngamanyathelo ngokubanzi:

• Ukufakela oomatshini: Sebenzisa i-spacers ukukhusela iseli yomthwalo phakathi kwesiseko kunye nesitya okanye iqonga eliza kuxhasa ubunzima. Umbindi weseli kufuneka uhlale ukhululekile kwaye ube kuphela kwenxalenye eguqukayo phantsi komthwalo.
• Isalathiso samandla: Qwalasela utolo olukrolwe kwiseli, olubonisa icala ekufuneka ubunzima bubekwe kulo.
• Uqhagamshelo loMbane: Qhagamshela nganye yeengcingo zeseli kwizikhonkwane ezihambelanayo kwi-HX711 ilandela ikhowudi yombala (Obomvu ukuya ku-E +/VCC, Mnyama ukuya ku-E-/GND, eluhlaza ukuya ku-A+/Okuphumayo+, kuMhlophe ukuya ku-A-/Isiphumo-). Ukufumana iinkcukacha ezithe vetshe, bona i isikhokelo sokulayisha iiseli.
• Uqhagamshelo kwi-microcontroller: Ukusuka komnye umqolo wezikhonkwane kwi-HX711, qhagamshela i-GND kunye ne-VCC kunikezelo lwamandla, kunye ne-DT (iDatha) kunye ne-SCK (Clock) izikhonkwane kuzo naziphi na izikhonkwane ezimbini zedijithali kwi-Arduino okanye nayiphi na ibhodi oyisebenzisayo.

Kwimilinganiselo yokuhlambela okanye iiprojekthi eziyinkimbinkimbi, zihlala zisetyenziswa iiseli zomthwalo ezine ezilula zilungiswe kwiikona, iintambo zazo kufuneka zidityaniswe kusetyenziswa a imodyuli yomhlanganisi okanye ulandele umzobo woqhagamshelo lwemanuwali (umsebenzi ochanekileyo apho kuya kufuneka ufunde idata ngononophelo kwaye ulinganise ukuchasana nokuchonga ucingo ngalunye).

Kwabo bafuna ukuchaneka okuphezulu, kukho iimodyuli ezidityanisiweyo ezivela kwiimpawu ezinjengeSparkFun ezenza lula iintambo kwaye zikuvumela ukuba udibanise ngokulula imiqondiso kuzo zonke ezine zoluvo kwigalelo elinye elihambelana ne-HX711.

Ibhulorho yeWheatstone eSebenzayo: Izinto eziluncedo kunye nokuqwalaselwa

Ukusetyenziswa kwe Ibhulorho yeWheatstone Oku akuyonto nje: ivumela ulwandiso oluchanekileyo lokutshintsha kokumelana kwiigeyiji zoxinzelelo, ukulawula ukucombulula iiyantlukwano ezincinci kakhulu kunye nokufumana umgca ogqwesileyo kumlinganiselo.

Kwiinkqubo apho kusetyenziswa iseli enye yocingo olune, ibhulorho sele iqwalaselwe kwaye akukho mfuneko yokuba nzima izinto. Ukuba ufuna ukwakha ibhalansi echane ngakumbi ngokudibanisa iiseli ezininzi, kuya kufuneka uzifake ucingo ukwenza ibhulorho yeWheatstone enye, elandela itopology echazwe kakuhle, okanye usebenzise iimodyuli zokuhlanganisa. Ukuguqulwa komqondiso wemveliso Oku kunokwenzeka ukuba, njengoko ubunzima bukhula, ukufundwa kuncipha okanye ukuziphatha ngendlela echasene noko kulindeleke; kulo mzekelo, ngokulula ukubuyisela umva udibaniso lwe A+ kunye A- iintambo.

Iimpawu eziphambili zobugcisa zeHX711

Le modyuli iyabonelela iinzuzo ezininzi eyenza ukuba idume kakhulu:

• Isigqibo: Ukuya kuthi ga kwiibhithi ezingama-24, ukuvumela ukuchongwa kotshintsho lobunzima obuncinci.
• Inzuzo enokucwangciswa: Unokukhetha phakathi kwe-128x okanye i-64x ngokuxhomekeke kwiimfuno zakho zobuntununtunu.
• Ireyithi yesampulu ehlengahlengiswayo: Phakathi kwe-10 Hz kunye ne-80 Hz, ikuvumela ukuba ulungelelanise isantya sokulinganisa ukuzinza kwesicelo.
• Ukuhambelana: Ixhasa iiseli ezigcwele ibhulorho okanye isiqingatha sebhulorho, ekwaziyo ukufunda ukuya kuthi ga kwiiseli ezimbini kuqwalaselo olubini.
• Ukusetyenziswa kwamandla aphantsi kakhulu: Ekusebenzeni okusebenzayo, ngaphantsi kwe-1.5 mA; ilungele izixhobo ezisebenza ngebhetri.
• Ubushushu obusebenzayo: Uluhlu olubanzi kakhulu, ukusuka -40ºC ukuya +85ºC.
• Ubume obubambeneyo: Ubungakanani bayo bukwenza kube lula ukudibanisa kwiibhodi kunye neeprototypes, kunye nezikhonkwane ezilungele ukuthengiswa okanye ukufaka kwi-breadboard.

Amaxwebhu ayo abanzi kwaye kukho uluntu olukhulu lomphuhlisi, oluguqulela ekufumanekeni kwe imizekelo yekhowudi, amathala eencwadi kunye nezikhokelo ze-intanethi ukugqiba iprojekthi yakho ngokukhawuleza.

Indlela yokucwangcisa kunye nokulinganisa isikali sedijithali esekelwe kwi-HX711 kunye ne-Arduino

Ukuxhoma i-hardware sisiqingatha kuphela somsebenzi. Ukufumana imilinganiselo yobunzima ngqo, kufuneka udwelise inkqubo kwaye, ngaphezu kwako konke, ukulungelelanisa inkqubo ngokuchanekileyo. Masibone indlela yokwenza inyathelo ngenyathelo:

Ukufakela ithala leencwadi le-HX711

Inyathelo lokuqala kukufaka ithala leencwadi eliququzelela unxibelelwano ne-HX711. Eyona ndlela idumileyo nethembekileyo yilayibrari eyenziwe nguBogde, ekhoyo kwiGitHub. Ungayikhuphela ngesandla okanye uyifake ngqo kwi Umphathi wevenkile yeencwadi ukusuka kwi-IDE yeArduino, ikhangela "HX711".

Imisebenzi ephambili yethala leencwadi le-HX711

• qala(PinData, PinClock): Qalisa i-HX711 ngokubonisa idatha kunye nezikhonkwane zewotshi ezisetyenziswe kwi-microcontroller yakho.
• misela_isikali(isikali sokudada): Inika ixabiso lesikali okanye into yokuguqula. Oku kubalulekile ukuze ufundo luhambelane nowona bunzima.
• imisebenzi: Yenza i-taring, oko kukuthi, ibeka umlinganiselo ukuya kwi-zero kunye nobunzima bangoku. n ibonisa inani leisampulu ezithathiweyo ukuchaza iitare.
• funda (): Yenza ufundo olunye lwesignali kwi-ADC yangaphakathi ye-HX711.
• funda_umndilili(n): Ibuyisela i-avareji ye-n yokufunda; kwandisa i uzinzo y kuchaneka yomlinganiselo.
• get_value(n): Ibuyisela ixabiso lokufunda thabatha ubunzima be tare. Ukuba uphumelele n, i-avareji elo nani lokufundwayo.
• fumana_iiyunithi(n): Bala ubunzima ngokususa iitare kunye nokwahlula isiphumo ngokwesikali.

Le misebenzi igubungela umjikelo opheleleyo wokuqalisa, ulungelelwaniso, ukulinganisa kunye nokufunda kwesikali.

Ulungelelwaniso: inyathelo elibalulekileyo lomlinganiselo ochanekileyo

La ukulinganisa Oku kubandakanya ukulungelelanisa isikali ukwenzela ukuba ufundo lwedijithali lwe-HX711 luhambelane namaxabiso obunzima bokwenyani kwiiyunithi ezifunwayo (ngokuqhelekileyo iikhilogram okanye iigram). Ubuchule obuqhelekileyo bobu bulandelayo:

1. Ngaphandle kwayo nayiphi na into kwisikali, sebenzisa inkqubo yolungelelwaniso eyenza i tare (icwangcisa isikali ukuya kwiqanda).
2. Beka into enobunzima obaziwayo (ngokufanelekileyo, kufuneka isondele kubunzima obuninzi oza kubulinganisa) kwisikali.
3. Bhala phantsi ixabiso lokufunda elingalinganiswanga ukuba imonitha yothotho ikubonisa. Kuqhelekile ukwenza i-avareji yofundo oluninzi.
4. Bala umlinganiselo wesikali usebenzisa ifomula: funda_ixabiso / ubunzima_enyani = isikali_sisibakala, ngokuqwalasela iiyunithi ozifunayo (umzekelo, ukuba usebenzisa ubunzima be-4kg kunye nokufundwa kwe-1.730.000, isikali siya kuba yi-432500).
5. Guqula inkqubo ukwenzela ukuba kwi-set_scale function ufake ixabiso elibaliweyo.
6. Phinda ufundo. Yongeza okanye ususe ubunzima ukujonga ukuchaneka komlinganiselo.

Ulungelelwaniso lunovakalelo kwindawo yeseli, ukuqina kwenkxaso, umgangatho woqhagamshelwano lombane, kunye nezinye izinto. Ukuba utshintsha iseli, indlela yokuhlohla, okanye imodeli, kuya kufuneka uhlengahlengise.

Umzekelo wolungelelwaniso kunye nekhowudi yokulinganisa

Umzobo oqhelekileyo weArduino ubandakanya iinxalenye ezimbini: ukulinganisa kunye nokulinganisa. Umzobo wokulinganisa uvumela ukuba ulungelelanise ngokudibeneyo into usebenzisa i-monitor ye-serial (+ okanye - ukulungisa kakuhle ixabiso lesikali). Umzobo wokulinganisa ubonisa ngokulula ubunzima obufundiweyo kwisikrini usebenzisa into efunyenweyo.

Ulwakhiwo lwekhowudi olusisiseko luya kuba lulandelayo (luhlengahlengiswe kwaye lushwankathelwe, ukuze ungaphindi ngokoqobo umxholo wemizekelo):

• Ibandakanya ithala leencwadi le-HX711.
• Ichaza iDATHA kunye nezikhonkwane zewoshi.
• Iqalisa i-HX711 kwaye yenza i-tare.
• Kwilophu engundoqo, sebenzisa get_units () ukubonisa ubunzima obufundwayo rhoqo ngesiqingatha sesibini.
• Ikuvumela ukuba uguqule ubungakanani bemeko ukusuka kuthotho esweni ukuba ufuna ukulungisa kakuhle ukuchaneka.

Le ndlela, ethandwa nguSparkFun kunye nabanye abaphuhlisi, iqinisekisa ulungelelwaniso olugqibeleleyo nokuba iseli ayifani ncam nezinye zemodeli efanayo.

Ukudityaniswa okuphezulu: izikali zokuhlambela, i-IoT, kunye neenkqubo zoshishino

Kwiiprojekthi zasekhaya, iiseli zomthwalo zihlala zifunyanwa kwizikali zokuhlambela zentengiso (zidla ngokuza nezinzwa ezine). Ukudibanisa kunye nokudibanisa kwi-HX711, ungasebenzisa imodyuli yokudibanisa okanye ulandele imizobo ethile yokudibanisa evumela ukuba wenze ibhuloho ye-Wheatstone kunye nazo zonke iinzwa ezine. Ukuba awunayo imodyuli yomdibanisi, kuya kufuneka uchonge iingcingo (ngokuqhelekileyo zibe ntathu ngenzwa nganye) kwaye uzidibanise usebenzisa ireferensi yokumelana yangaphakathi phakathi kwababini.

Ukudityaniswa kwe-HX711 akunamida. Iqhelekile kwiiprojekthi ze-IoT (i-Intanethi yeZinto), apho ubunzima obubekwe esweni sisikali sedijithali buthunyelwa kwilifu kusetyenziswa i-ESP8266, iNodeMCU, okanye efanayo. Oku kukuvumela ukuba wenze umlinganiso ozenzekelayo, uluhlu lwempahla yokulawula ukude, ukubeka iliso kwiisilinda zerhasi, iitanki, kunye nezinye iinkqubo ezinobunzima beparameter.

Kwicandelo lezoshishino, ukuqina kunye nokuchaneka kwe-HX711 kuvumela ukusetyenziswa kwayo kwiinkqubo ze-dosing ngokuzenzekelayo, iinkqubo zokulawula inkqubo ngokuzenzekelayo, oomatshini bokupakisha, kunye nezicelo zonyango, njengoko isisombululo saso sanele ukulinganisa ukusuka kwiigram ukuya kwishumi leekhilogram ngokuchaneka okukhulu.

Iingcebiso kunye nesisombululo seengxaki eziqhelekileyo

Xa usakha eyakho inkqubo yokulinganisa, gcina ezi ngcebiso engqondweni:

• Kuphephe ukothuka kakhulu okanye ukungcangcazela kwiseli yomthwalo, njengoko zingonakalisa iigeyiji okanye zichaphazele ukulinganisa.
• Uqinisekisa ukulungiswa komatshini okuchanekileyo ukuphepha ukufunda ngendlela engaqondakaliyo okanye engazinzanga. Ummandla ophakathi kufuneka ukhululeke kwaye amandla ahambelane ngokugqibeleleyo nolwalathiso olubonisiweyo.
• Jonga ukudityaniswa kombaneUqhagamshelwano olubi lunokubangela ukuguquguquka okanye ingxolo kwisignali, ukwenza ukulinganisa kube nzima.
• Ukuba ufundo aluzinzanga okanye luyahluka phantsi kwevacuum, yenza i-tare entsha kwaye uqinisekise ukuba unikezelo lwamandla luzinzile.
• Ukuba isiphumo sokufunda siyahluka ngokubuya umva (siyancipha ngobunzima), ijikisa i-A+ kunye no-A- imidibaniso.

Kwakhona, ukuba iprojekthi yakho ifuna umlinganiselo wobunzima obahlukeneyo ngamaxesha ahlukeneyo, khumbula ukulungisa umlinganiselo wokulinganisa ngokufanelekileyo. Soloko ugcina amaxabiso olungelelwaniso afunyenwe kwiseli nganye kunye noqwalaselo.

Iimpawu zeModyuli ye-HX711 kunye noKhetho loRhwebo

Imakethi ibonelela ngeendidi ezahlukeneyo zeemodyuli ze-HX711 ezihambelanayo, zombini kwiivenkile ezikhethekileyo kunye nakwiiplatifti zenjongo jikelele. Ngokuqhelekileyo beza kunye neeseli zomthwalo zoluhlu oluhlukeneyo (1 kg, 5 kg, 20 kg, 50 kg) kwaye zinezikhonkwane okanye iiheader zokudibanisa lula. Iimpawu eziqaphelekayo zezi modyuli ziquka:

• Uluhlu lwemisebenzi: phakathi kwe-2.6V kunye ne-5.5V, evumela ukuba zisetyenziswe kunye neebhodi zombini ze-3.3V kunye ne-5V.
• Ukusetyenziswa kwamandla aphantsi kakhulu: ngaphantsi kwe-1.5 mA.
• Iifomathi ezihlangeneyo: ilungele ukudityaniswa kwiiprojekthi ze-DIY kunye neeprototypes.
• Amaxwebhu kunye nenkxaso: Uluntu kunye nabavelisi bahlala bebonelela ngee-tutorials, amaphepha edatha, kunye nemizekelo yokusetyenziswa kwe-Arduino kunye namanye amaqonga.

Imizekelo esebenzayo yokusetyenziswa kunye nokusetyenziswa

Ngenxa yokuguquguquka kweeseli zomthwalo kunye ne-HX711, zifanelekile kwiindidi ezahlukeneyo zezicelo:

• Izikali zedijithali zasekhaya kunye nekhitshi: ukulinganisa izithako okanye ukutya ngokuchaneka okuphezulu.
• Iinkqubo zokujonga iisilinda zegesi: Bavumela ukubeka esweni okude kwesimo sokuzalisa ukuphepha ukuphelelwa kunikezelo.
• Ulawulo lwempahla kwiindawo zokugcina iimpahla kunye neevenkile: Ngokulinganisa okuqhubekayo, isitokhwe esiseleyo sinokujongwa ngexesha langempela.
• Izikali ezidityaniswe ngamafu: Ukusebenzisa iibhodi ezifana ne-ESP8266, idatha eqokelelweyo inokubonwa okanye iqhutywe kwiiplatifomu zewebhu zohlalutyo oluphambili.
• Izixhobo zonyango: ezifana nezikali zeebhedi zesibhedlele, iinkqubo zokudosa kunye nokujongwa kobunzima kwiilabhoratri.
• Iirobhothi kunye neenkqubo zokudosa ezizenzekelayo: ukukhupha isixa esilungileyo semathiriyeli ekrwada kwinkqubo nganye.

Kuzo zonke ezi meko, unxibelelwano kunye neprotocol yeprogram ifana kakhulu. Nje ukuba iseli ilinganiswe, uya kuba nemilinganiselo ethembekileyo nechanekileyo eya kuphucula ukuzenzela kunye nolawulo lweenkqubo zakho.

Indlela yokukhetha inkqubo efanelekileyo yeprojekthi yakho

Isigqibo phakathi kokusebenzisa i-1kg, 5kg, 20kg, okanye i-50kg yeseli, uhlobo lokunyuka, kunye nokulinganisa kuya kuxhomekeka kwiimfuno zakho ezithile. Nantsi indlela yokukhetha echanekileyo: ezinye iikhrayitheriya zokwenza esona sigqibo silungileyo:

• Uluhlu lobunzima: Khetha iseli yomthwalo enomthamo omkhulu ongaphezulu kancinane kunobunzima obuya kumeta ngesiqhelo.
• Ukuchaneka okufunekayo: Ukuba ufuna ukuchaneka kwigram, khangela iiseli zomthwalo ezinobunzima obuphezulu kunye noluhlu oluphantsi. Ukuba isicelo sakho sinyamezela iimpazamo zeegram ezininzi okanye amashumi eegram, ungakhetha iimodeli zoluhlu oluphezulu.
• Ubunzima bokudibanisa oomatshini: Iimodeli ze-bar-mount kwizikali zekhitshi kulula ukuzifaka. Kwizinzwa ezine kwizikali zokuhlambela, kuya kufuneka usebenze ekuhlanganiseni iintambo okanye uthenge imodyuli edibeneyo.
• Inkxaso yeMicrocontroller: Iimodyuli ze-HX711 ziyahambelana phantse naliphi na ikhadi, kodwa qiniseka ukuba umbane wokubonelela kunye namanqanaba okuqiqa achanekile.

Ukumodareyitha kunye nexabiso eliphantsi le-HX711 kunye neeseli zayo zomthwalo zenze itekhnoloji yedemokhrasi yokulinganisa i-elektroniki, evumela nawuphi na umenzi, umfundi, okanye ingcali ukuba azakhele inkqubo yokulinganisa ngempumelelo eqinisekisiweyo.

Ukhetho olufanelekileyo, ulungelelwaniso, kunye nokudibanisa oomatshini kumisela impumelelo yeprojekthi yakho. Ngomlinganiselo othembekileyo kunye nozinzile, unokudibanisa ulawulo, ukuzenzekelayo, kunye neenkqubo zokubeka iliso kunye neziphumo zobungcali, zombini kwizicelo zasekhaya kunye nezoshishino.