Umfanekiso 1. Umfanekiso wemveliso yochungechunge lweLanbao PDA kwiphepha lemveliso elisemthethweni. Umfanekiso ubonisa usapho lwemveliso; qinisekisa isimamva esipheleleyo semodeli ngaphambi kokusebenzisa iinkcukacha. Umthombo [2].

Ukuphinda okwahlukileyo kwezinye iinkcukacha zokulinganisa

Ukuphinda-phinda kuchaphazela ukusasazeka kwemibono elandelelanayo phantsi kweemeko ezingatshintshanga ngokupheleleyo. Ukuphinda-phinda kuhlola iimeko ezitshintshileyo, ezifana nomnye umqhubi, omnye ufakelo, okanye olunye usuku. I-NIST yahlula ezi ngcamango kwaye icebisa ukuba kuchazwe indlela yokuchaneka okubonakaliswa ngayo, kuquka nomlinganiselo wezibalo ofanelekileyo.

Isisombululo sesona sincinci sibonakalayo okanye sibonakalayo. Umboniso ungabonisa ukunyuka okuncinci ngelixa ukufundwa okungaphantsi kuhamba ngenani elikhulu. Ukukhetha umahluko ngumahluko ocwangcisiweyo kwixabiso lesalathiso. Umgca uchaza ukusuka kulwalamano oluchaziweyo kuluhlu lokulinganisa. Isenzi sinokubuyisela ngokuphindaphindiweyo ixabiso elifanayo elingalunganga, ngoko ke ukuphindaphinda okuhle kakhulu akunakususa impazamo yokulinganisa.

Funda iinkcukacha zepesenti ngononophelo. Kwisikali esipheleleyo esingu-30 mm esichazayo, u-±0.1% uhambelana no-±0.030 mm, okanye u-±30 μm. Loo manani aguqula iinkcukacha ezisekelwe kuluhlu zibe ziiyunithi zobunjineli eziluncedo. Akuthetha ukuba yonke imilinganiselo inempazamo efanayo, kwaye ayiguquli ulungelelwano lube kukuphinda-phinda.

Buza ukuba inani eliphindaphindwayo limele ntoni ngokwenene

Iingcaphuno ezimbini zingachaza i-20 μm kwaye zichaze ukusebenza okwahlukileyo. Omnye umthengisi angaxela ukuphambuka okuqhelekileyo okuthathu; omnye angaxela lonke uluhlu olubonweyo lwe-peak-to-peak. Iziphumo ze-peak-to-peak zikwaxhomekeke kubalo lweesampuli kunye ne-outliers. Buza indlela yokubala, inani leesampuli, ukufundwa okungavuthwanga apho kufumaneka khona, kunye nokuba inani lingumda okanye lisiphumo esiqhelekileyo.

Uxwebhu oluzinikeleyo lwe-PDA-CR50 lukaLanbao lubonisa ikhadi elimhlophe elibonisa ukukhanya okungama-90%, iimeko ezingama-23 ±5°C, unikezelo lwe-VDC ezingama-24, kunye nokufudumeza imizuzu engama-30. Lukwakhankanya ixesha lokuvavanya i-2 ms kunye ne-avareji yesampulu ezili-100 kumanqaku alo ovavanyo. [1] Ngaphambi kokuba uthelekise ikowuteshini nolo xwebhu, buza ukuba ezo setingi zihambelana njani nexesha lokuphendula elicatshulweyo kunye nokuphindaphinda. Musa ukucinga ukuba isiphumo selabhoratri esihluziweyo simele indlela yokusebenza ekhawulezayo.

Ukuze uthelekise ukuthenga, misa iresiphi yokulinganisa enye. Chaza ithagethi, umgama wesalathiso, ukujongwa komphezulu, ixesha lokuzinzisa, ubude bokufumana, ujongano lwemveliso, kunye nokucoca. Cela uvavanyo olulinganayo kumthengisi ngamnye ofanelekileyo. Apho useto olulinganayo lungenakwenzeka, chaza umahluko ngokucacileyo endaweni yokubeka amanani angenanto.

Qonda ukuba kutheni imiphezulu yokwenyani itshintsha isiphumo

Ii-sensors ezininzi ze-laser displacement ze-short range zisebenzisa i-optical triangulation. I-receiver ijonga indawo yokukhanya okubonakalisiweyo, kwaye inkqubo yokucubungula ibala indawo leyo ukuya kumgama. Iimeko zomphezulu ngoko ke zinokuchaphazela umlinganiselo nokuba umgama obonakalayo uhlala ungaguquki. Isiphumo kufuneka sivavanywe kuyilo oluthile lwe-optical kunye nenxalenye.

Umphezulu ocwebezelayo ungakhokelela ukukhanya okuluncedo kude nesamkeli okanye wenze ukubonakaliswa okunamandla kwe-specular. Umphezulu omnyama ungabonelela ngokukhanya okuncinci okubuyisiweyo. Ubume bunokutshintsha isignali ebonwayo njengoko iimpawu ezahlukeneyo zomphezulu zidlula kuloo ndawo. Emdeni, indawo ekhanyisiweyo ingabandakanya ukuphakama okubini. Indawo enkulu inokulinganisela iinkcukacha zasekuhlaleni ezicetywayo uhlolo.

Faka i-sensor ukuze iindlela ezikhutshwayo nezifunyenweyo zingaphazanyiswa kuyo yonke intshukumo elindelekileyo. Jonga iipokotho, imiphetho ephakanyisiweyo, kunye nezixhobo zokujonga ithunzi. Sebenzisa uluhlu lokwenyani lokugqitywa komphezulu, kuquka notshintsho olwamkelekileyo lwemveliso. Ukuvavanya isampulu enye ekhangayo kunokufihla imo yokusilela ebonakala emva kokuba iqela elilandelayo lezinto lifikile.

Yakha uhlahlo-lwabiwo mali lweempazamo zokuhlola ngaphambi kokukhetha izixhobo zekhompyutha

Qala ngokunyamezelana kokutsala kunye nesiphumo sokwamkela okungeyonyani okanye ukwaliwa okungeyonyani. Misela igalelo lokulinganisa elivumelekileyo neqela lomgangatho. Umlinganiselo omiselweyo wokulinganisa-ukuya-kunyamezelo unokuba luncedo ngaphakathi, kodwa akukho mlinganiselo mnye ozibonakalisa ngokuzenzekelayo ukuba ufanelekile kuyo yonke imveliso okanye kwinqanaba lomngcipheko.

Cinga ngokunyamezela ukuphakama okubonakalayo ukusuka kwi-9.80 ukuya kwi-10.20 mm, ububanzi obupheleleyo be-0.40 mm. Masithi uvavanyo lovavanyo lovavanyo luvelisa ukuphambuka okusemgangathweni okuzinzileyo kwe-0.006 mm. Ukuphambuka okusemgangathweni okuthandathu kuthatha i-0.036 mm, okanye i-9% yobubanzi bokunyamezela. Olu lubalo lokuhlola olo vavanyo oluzinzileyo, aluyiyo isiphumo sokwamkelwa kwegeyiji epheleleyo. Akubandakanyi ukutshintshwa kwendawo, ukukhetha, ubushushu, kunye neziphumo zexesha elide.

Ukuba iminikelo yokungaqiniseki esemgangathweni ezimeleyo iqikelelwa njenge-6 μm yengxolo yesenzi, i-8 μm yokubeka kwakhona, kunye ne-4 μm yokufunyanwa, i-root-sum-square yazo imalunga ne-10.8 μm. Olu balo lusebenza kuphela xa uqikelelo lwabelana ngesiseko esifanayo kwaye ingcamango yokuzimela ifanelekile. Iziphumo ezinxulumeneyo, ukukhetha okungalungiswanga, kunye nemida ephezulu echaziweyo zifuna unyango olwahlukileyo; akufuneki zifakwe ngokungaboniyo kwifomyula efanayo.

Ingxoxo yokuthenga eluncedo ke ngoko iqala ngebhajethi yesicelo. Ukuba isixhobo silawula utshintsho, isenzi esibiza kakhulu sinokongeza ixabiso elincinci. Ukuba iziphumo zomphezulu zilawula, ukutshintsha ijiyometri okanye iteknoloji yokuva kunokubaluleka ngaphezu kwexabiso elincinci lokuphindaphinda kwikhathalogu.

Qinisekisa imilinganiselo emileyo nehambayo ngokwahlukeneyo

Sebenzisa isalathiso esinokulandeleka okanye inqanaba elifanelekileyo lokufuduka elilinganisiweyo ukujonga iindawo ezaziwayo. Ukungaqiniseki kwesalathiso kufuneka kuhambelane nesigqibo esenziwayo. Bhala phantsi iimeko zemozulu kwaye uvumele inkqubo izinze ngokwendlela umenzi afuna ngayo. Gcina useto kunye nedatha eluhlaza ukuze isiphumo siphindwe emva kokufakwa.

1. Linganisa ireferensi enye esisigxina ngokuphindaphindiweyo ukuze ufumane ingxolo yexesha elifutshane.

2. Susa kwaye ufake enye indawo ukuze ubonise ukuguquguquka kokulayisha kunye nokulungiswa kwezinto.

3. Linganisa iindawo ezimeleyo kuluhlu olufunekayo kunye nokugqitywa komphezulu.

4. Phinda ngesantya semveliso ngendlela yokwenyani yokuqalisa kunye nendlela yokufumana.

5. Phinda emva kokufudumeza, utshintsho lobushushu, kunye nokucoca okanye ukulungisa okuqhelekileyo.

6. Thelekisa iziphumo nemida ekuvunyelwene ngayo kwaye uphande ukusilela ngaphambi kokuba ukhululwe.

Ezi zixa ziindawo zokuqala ezicetywayo, kungekhona ubungakanani besampulu obumiselweyo. Yandisa ukugubungela ngokweenkqubo ezahlukeneyo, iimfuno zokuzithemba, kunye neendleko zesigqibo esingalunganga. Uvavanyo olufutshane lunokuchonga ingxaki ngaphandle kokubonisa ukuthembeka kwexesha elide.

Ibhalansi yesantya somgca ngokuthelekisa nesantya somgca

Umyinge unokunciphisa ingxolo engacwangciswanga, kodwa unokulibazisa isiphumo kwaye ulungise uphawu olufanele lufunyanwe. Kwiisampuli ezizimeleyo ezingacwangciswanga, ukuphambuka okuqhelekileyo komndilili kuncipha ngengcambu yesikwere senani leesampuli. Ingxolo enxulumeneyo, ukutyibilika kancinci, kunye neempazamo ezixhomekeke kumphezulu azilandeli loo phuculo.

Kuhlolo oluhambayo olubonisa umzobo, uphawu lwe-5 mm oluhamba kwi-0.5 m/s luhlala phantsi kwendawo yokulinganisa inqaku malunga ne-10 ms. Useto lwempendulo oluqhelekileyo lwe-40 ms lude kunelo festile yokujonga. Uphawu lunokuncipha okanye luxutywe neendawo ezikungqongileyo. Useto olukhawulezayo lunokufuneka, lulandelwe luvavanyo olutsha lokuphindaphinda kuloo seti.

Bala ukulibaziseka kwe-trigger, ixesha lokuskena isilawuli, uhlaziyo lonxibelelwano, kunye nalo naluphi na umyinge owenziweyo kwi-PLC. Isibonisi senzwa sinokubonakala sizinzile ngelixa i-PLC ifunda idatha endala okanye ehluziweyo ngokwahlukileyo. Vavanya ixabiso elisetyenzisiweyo kwisigqibo semveliso.

Jonga imithetho yokudibanisa kunye nokwamkelwa

Kwi-interface ye-analog, qinisekisa ukukala, isisombululo sokufaka, ukumisa umhlaba, ukuhambisa intambo, kunye nomthwalo we-loop. Kwi-interface yedijithali, qinisekisa iiyunithi, utoliko lwerejista, izinga lokuhlaziya, ukuphathwa kwedatha engasebenziyo, kunye nexesha lokuphelelwa. Akukho nanye kwezi interface iqinisekisa ngokuzenzekelayo isiphumo sokuhlola esingcono; ukuphunyezwa okupheleleyo kumisela ukusebenza.

Misela umthetho wesigqibo ocacileyo kufutshane nemida yeenkcukacha. Umlinganiselo osondeleyo kumda unokufuna ibhendi yokulinda, umlinganiselo kwakhona, okanye enye indlela yokuhlola, kuxhomekeke kumgaqo-nkqubo wokungaqiniseki kunye nomgangatho ovunyiweyo. Musa ukufihla udidi olungaqinisekanga ngokulinganisa ngokuphindaphindiweyo de kuvele ixabiso elidlulayo.

Ukuthengwa kungasebenzisa usapho lwemveliso yeLanbao PDA njengomviwa wovavanyo, ngelixa ucela i-datasheet yomzekelo ochanekileyo, uqwalaselo lwemveliso, kunye novavanyo lwesicelo. [2] Khulula isenzi kuphela ngesiseko esirekhodiweyo, umzobo wokufaka, ifayile yezicwangciso, inkqubo yokuqinisekisa, kunye nemiyalelo yokutshintsha. Ezo rekhodi zinceda ukugcina ukusebenza okuqinisekisiweyo emva kokulungiswa.

Iireferensi

[1] Iphepha ledatha leLanbao PDA CR50 elinobunono obuphezulu kunye neemeko zovavanyo

[2] Usapho lwemveliso yesixhobo sokuhambisa i-laser sensor yeLanbao PDA kunye nomthombo womfanekiso

Imibuzo ebuzwa qho

Ngaba ukuphindaphindwa kuyafana nokuchaneka

Hayi. Ukuphindaphinda kuchaza ukuvumelana phakathi kokufundwa okuphindaphindiweyo phantsi kweemeko ezichaziweyo. Ukuchaneka kuphathelele ukuvumelana nobungakanani obulinganiswayo. Umlinganiselo ozinzileyo unokuvelisa ukuphindaphinda okuhle ngelixa umgama oxeliweyo uhlala ungafanelekanga kwisigqibo sokuhlolwa ngokupheleleyo.

Ukuphindwa kwakhona okulungeleyo ukuhlolwa kwam

Khetha imfuneko kunyamezelo lwenxalenye, uhlahlo lwabiwo-mali olungaqinisekiyo, kunye nemiphumo yokuhlelwa ngendlela engachanekanga. Qinisekisa inkqubo epheleleyo efakiweyo. Ixabiso lekhathalogu lodwa alinakuseka umda wokwamkelwa ofanelekileyo kwinkqubo engaziwayo.

Ngaba isensa enesisombululo se-10 micrometer ingahlola ukunyamezelana kwe-10 micrometer?

Isisombululo sodwa asixhasi eso sigqibo. Ingxolo, ukukhetha icala, ulungelelwano, iziphumo zobushushu, ukwahluka kwezixhobo, kunye nokuziphatha kokufumana izinto kunokuba kukhulu kunokwanda okubonisiweyo. Ukunyamezelana kufuna uphando olufanelekileyo lwamandla okulinganisa.

Kutheni ukufundwa kungazinzile kwisinyithi esikhazimlayo

Imiphezulu ekhanyayo inokutshintsha ukukhanya okufikelela kwireceiver njengoko i-engile okanye indawo itshintsha. Vavanya ukugqitywa kwayo kunye nejometri. I-engile eyahlukileyo yokumisa, ulungiselelo lwe-optical, okanye itekhnoloji ye-sensor inokufuneka emva kovavanyo lwesicelo.

Ngaba umyinge uhlala uphucula ukuphindaphindwa

Ukulinganisela kudla ngokunciphisa utshintsho olungacwangciswanga olungenamkhethe. Akususi ngokuthembekileyo ukutyibilika okanye impazamo ecwangcisiweyo, kwaye kunokunciphisa ukubonakala kweempawu ezimfutshane kwiindawo ezihambayo. Thelekisa useto ngesantya esifunekayo sokuvelisa.

I-sensor kufuneka ihlolwe kangaphi

Misela ixesha eliphakathi komngcipheko wenkqubo, ukutyibilika okubonweyo, imeko-bume, kunye nembali yokugcinwa. Jonga emva kotshintsho lofakelo okanye ukutshintshwa kwesensor. Ukuhlolwa kwesalathiso kwizithuba zemveliso ezichaziweyo kunceda ekutyhileni utshintsho ngaphambi kokuba luchaphazele iqela elikhulu.

Yintoni ekufuneka ithunyelwe kumthengisi ukuze kuhlolwe kakuhle

Nika iindawo ezimeleyo, imizobo, ukunyamezelana, utshintsho lomphezulu, imida yokufakela, isantya somgca, iinkcukacha zomlawuli, kunye nomthetho wesigqibo ofunekayo. Cela imilinganiselo eluhlaza kunye noseto olupheleleyo ukuze uvavanyo lukwazi ukuphinda lusetyenziswe kumatshini.