Isilawuli sokulinganisa i-multihead weigher

Umbhali: Smartweigh–Multihead Weighter

1. Ukuqulunqwa kunye neeparitha zobugcisa zokulawula umlinganiselo we-multihead weigher i-Multihead weigher yinkqubo esetyenziswa ngokuqhelekileyo kwi-intanethi ye-dynamic dynamic weighing system, ebandakanya ubukhulu becala ukuhambisa ibhanti lomthwalo, umthwali, izixhobo zokuhlola, isilawuli sokulinganisa, ubunzima bomnatha Cwangcisa izixhobo kunye nezinye izinto ezizenzekelayo. ukuchongwa, ukuqinisekiswa komlinganiselo oguqukayo kunye nezinye iimpawu. Ngexesha lomsebenzi, ngaphandle kolawulo lwezandla, umthumeli webhanti lomthwalo uya kuthumela ngokuzenzekelayo izinto ezikrwada ukuba zilinganiswe kumthwali, ngokuhambelana namacandelo amabini okuhlola optical kumacala omabini eqonga lokulinganisa ukwahlula indawo yezinto ezikrwada ukuba zilinganiswe, kwaye umise kwangaphambili ngokwezixhobo zokuseta. Uluhlu oluhle lobunzima bokwenza uvavanyo. Ukuze kugcinwe ngcono izinto ezikrwada zilinganiswe kwisikali ngokwesantya somthuthi, kumiselwe ukuba iphaneli yokulawula umlinganiselo kufuneka ikhawuleze, ichaneke kwaye ithembeke.

Isilawuli sokulinganisa sisetyenziselwa ukulawula ukunyathela kwe-multihead weigher kwiqela loxinzelelo lokunyathela kwibala lerabha elivuthisiweyo. Ubukhulu becala iqulunqwe inkqubo yolawulo oluzenzekelayo eyenziwe 51 single-chip microcomputers, preamplifier, isixhobo sokubeka, isibane isiphumo screening, counter counter, copier, unikezelo lwamandla switching, njalo njalo. Umgaqo-sikhokelo wayo osisiseko uboniswe kuMfanekiso 1.

I-preamplifier yandisa i-millivolt yezinga ledatha yedatha yemveliso ye-sensor yoxinzelelo olusebenzayo, iguqulela kwisignali yokwahlukana, kwaye iyithumele kwi-CS-51 i-single-chip inkqubo yokulawula ngokuzenzekelayo yokucubungula idatha. Uluhlu lobunzima obuseti luthelekiswa, kwaye umphumo wokuthelekisa usekelwe ekuvuleni nasekuphumeni kwesibane somboniso ukubonisa ulwazi, i-electronic counter ukubala, kwaye uqale umkopishi ukurekhoda ulwazi lwedatha yemveliso. Umlawuli wokulinganisa uneendlela ezimbini zokusebenza: ukusebenza kunye nokulinganisa. Xa indlela yokulinganisa ikhethiwe, iya kufaka idatha engatshintshiyo kwaye ibonise ulwazi ngokuqhelekileyo.

Ngeli xesha, beka into ekufuneka ilinganiswe kwiqonga lokulinganisa, iphaneli yokulawula iya kubonisa ubunzima obunetha bento ekufuneka ilinganiswe, kwaye isikali sinokulinganiswa. Xa indlela yokusebenza ikhethiwe, umlawuli wokulinganisa uya kungena kubunzima obuguquguqukayo kunye nokusebenza kokuhlola. Ngeli xesha, umlawuli wokulinganisa uya kukhangela izibonakaliso zedatha ye-optical yamacandelo ukuba alinganiswe kumacala omabini eqonga lokulinganisa, ukuchonga iindawo zokunyathela, kwaye enze imisebenzi yokulinganisa kunye nokuhlola.

Kwilizwe lam, abalawuli bobunzima abasetyenziselwa ukulinganisa iintloko ezininzi zizinto ezininzi ezithunyelwa ngaphandle, kwaye uninzi lweemveliso eziphuhliswe kwaye ziyilwe eTshayina zivele kwimiboniso yokulinganisa injongo ngokubanzi. Uluhlu lokuhlola lobunzima bomnatha lufakwa yibhodibhodi. Xa yonke into isebenza ngokuqhelekileyo, abasebenzi bokwenene abakwazi ukubona ixabiso elisetyenzisiweyo, umfanekiso umpofu, kwaye uhlengahlengiso alunangxaki. Umlawuli wokulinganisa uphuhliswe kwaye uyilwe sithi uxelisa iisampulu zaphesheya, kwaye iinguqu ezine ze-DIP ezine-position zibekwe kwipaneli yokulawula yebhodi yokulawula ukuseta uluhlu lokuhlola ubunzima bomnatha. Izitshintshi ezine ze-DIP zinokuhlulwa zibe ziindidi ezintlanu zobunzima bomnatha ngokwetheknoloji yokucubungula (jonga uMfanekiso 2).

Amanani amabini okuqala edatha enemivo emine amele inani elipheleleyo, kwaye amabini okugqibela amele idesimali. Ngethuba lenkqubo yonke yokulinganisa okuguquguqukayo kunye nokuhlolwa, ixabiso lokuseta kwangaphambili linokulungiswa nanini na naphi na. Cwangcisa izibane ezihambelanayo zokubonisa kunye nezinto zokubala zobunzima bomnatha ngamnye kwiphaneli yokulawula.

Abasebenzi bokwenene bokusebenza banokuhlengahlengisa ngokukhawuleza uxinzelelo olusebenzayo lwe-inlet yokunyathela i-extrusion ngokulandela uhlalutyo lwendlela yobunzima bobunzima obuboniswe ngephutha eliphezulu kunye nephutha eliphantsi lokulawula ubunzima bobunzima bokunyathela. Ngaloo ndlela, kubonakala kakhulu kwaye kulula. Irejista nganye kwiidijithi ezintandathu inolwazi lwedatha olunjengokulinganisa okuhle, impazamo ephezulu, impazamo esezantsi, ukutenxa okuphezulu, ukutenxa okuphantsi, umthamo wokuvelisa (kubandakanywa okuhle, impazamo ephezulu, kunye nempazamo esezantsi).

Ixhotyiswe ngekopi yokukopisha idatha kunye nolwazi olufana nemveliso yokuzalwa, efanelekileyo yokulawula iworkshop yokuvelisa. Kwiimveliso ezingafanelekanga kunye nokuphambuka okuphezulu kunye nokuphambuka okuphantsi, izixhobo zokuhlola ziya kwenziwa zisebenze ngokuzenzekelayo ukuze zisuswe, kwaye i-alamu iya kuvakala ukukhumbuza abasebenzi bangempela ukuba banikele ingqalelo. Isilawuli sokulinganisa asinayo kuphela imisebenzi yesandi esishukumisayo kunye nokusebenza kokuhlola, kodwa unemisebenzi ye-zero-point automatic tracking, i-peeling, kunye ne-zero-clearing, njl.

Iiparamitha zayo eziphambili zezi:. Bonisa isikrini: ezinedijithi ezine-segment LED ityhubhu yokubonisa digital. Bonisa isisombululo sesikrini: ngaphezu kwezigidi ezingama-300. Isivamvo sikhuthaza ukunikezelwa kwamandla okutshintsha: DC15V. Ujongano lomshicileli omnye we-16. Ubushushu bokusebenza: enye 10-40 ℃. Inkqubo yokubonelela ngombane yokutshintsha unikezelo lwamandla: AC380VsoHz Okwesibini, uphuhliso lwesoftware Isoftware yefowuni ephathwayo yayo yonke inkqubo yesoftware yahlulwe ngokusebenza ngasemva kunye nokuhamba kwenkqubo yolwamkelo. Imixholo engasebenzi kakhulu, njengokukopisha, iindlela zokucubungula idatha, kunye nokuhlolwa kwesisindo sobunzima kunye nokuchongwa, zabelwe umsebenzi wokulawula imvelaphi; ngelixa umxholo osebenza ngakumbi ekuqokeleleni, ukuphunyezwa kwexesha, njl.njl., wabelwe umamkeli. Uphuhliso lwesoftware luthatha ulwakhiwo loyilo lwemodyuli, olwahlulwe kwiimodyuli zeprogram ezininzi ngokwemisebenzi yemihla ngemihla, eluncedo ekuhlengahlengisweni, ukwandiswa kunye nokutshintshwa.

Umzobo owenziwe lula wesakhelo senkqubo yomthombo ubonisiwe kuMfanekiso 3. Ukuze kuqhutywe umlinganiselo wedatha engatshintshiyo kunye nokuhlola okuguquguqukayo kunye nokulinganisa, ukuhamba kweprogram ikakhulu kuqhuba uhlalutyo olusebenzayo kunye noyilo oluchasene nokuphazamiseka. Nganye ichazwe ngezantsi.

1. Uhlalutyo lomsebenzi Uhlalutyo lomsebenzi wesoftware yefowuni ephathwayo ikakhulu kukuyila iimodyuli zeprogram ezahlukeneyo, kwaye ngokwale modyuli yenkqubo, yenza imisebenzi eyahlukeneyo ebalulekileyo yemihla ngemihla. Kolu qukuqelo lwenkqubo, imisebenzi ephambili eyenziwa yisoftware yefowuni ephathwayo inokuba:. Zero-point yokulandelela ngokuzenzekelayo;. Ukuxobula;.. Ulungelelwaniso lwenqaku elinguziro;. Ukuqokelelwa kwedatha; Ukwenziwa kwexesha;.Funda isitshixo kunye noseto;.Ukusebenza/jonga uguqulo;.Kopisha;.Vula ixabiso lolwazi elibonisiweyo phantsi kwendlela yokusebenza;. Ngaphantsi kolawulo lwenkqubo yokubeka iliso, le modyuli yeprogram yenza ubungakanani bedatha engatshintshiyo okanye ukuvavanya okuguquguqukayo kunye nokulinganisa ngokwesicwangciso sophumezo esimiselweyo.

2. Iskimu soyilo lokuchasana nokuphazamiseka Ngenxa yokuba i-multihead weigher isebenza kwindawo yendalo yokuveliswa kwemveliso, kukho iimpembelelo ezahlukeneyo kwindawo leyo, ebeka engozini umsebenzi oqhelekileyo wesikali. Ke ngoko, ukongeza kwi-hardware yoqwalaselo lwe-anti-jamming countermeasures, isoftware yefowuni ephathwayo i-anti-jamming countermeasures njengokhuseleko lwesibini nayo ibaluleke kakhulu kwaye iyimfuneko. I-software ye-sound system ayifanele iqhube uhlalutyo olusebenzayo kuphela, kodwa iphinde iqhube iskimu sokuyilwa kokuphazamiseka ukuze kuphuculwe ukuthembeka kwenkqubo yesofthiwe.

Isoftware yenkqubo ikhetha le miba mibini ilandelayo yokuchasana nokuphazamiseka kwisoftware yefowuni ephathwayo: (1) Uphazamiseko lwe-electromagnetic oluchasayo lwe-analog signal ye-I/O yeshaneli yokhuseleko ubukhulu becala bufana ne-burr, kwaye ixesha lesiphumo lifutshane. Ngokwale mpawu, xa uqokelela isignali yedatha yobunzima, inokuqokelelwa ngokuqhubekayo ngamaxesha amaninzi, de kube iziphumo zokuqokelela ezimbini eziqhubekayo zifana ngokupheleleyo, umqondiso wedatha ufanelekile. Ukuba isignali yedatha ayihambelani emva koqokelelo oluninzi, ukuqokelelwa kwedatha yangoku kuya kulahlwa.

Ubuninzi bomda wefrikhwensi yengqokelela nganye kunye nesantya esifanayo esiqhubekayo sinokuhlengahlengiswa ngokweemfuno ezithile. Ubuninzi bemali eqokelelwe kule nkqubo ihamba ngamaxesha e-4, kwaye amaxesha ama-2 alandelelanayo nawo aqokelelwa ngokufanelekileyo. Kwitshaneli yokhuseleko oluphumayo, nokuba i-MCU yenzelwe ukufumana ulwazi oluchanekileyo lwedatha, isixhobo esiphumayo sinokufumana ulwazi lwedatha olungachanekanga ngenxa yeempembelelo zangaphandle.

Kwisoftware yefowuni ephathwayo, eyona ndlela ifanelekileyo yokuchasa uphazamiseko kukukhupha ulwazi olufanayo lwedatha ngokuphindaphindiweyo. Ixesha lokuphindaphinda ixesha lifutshane kangangoko kunokwenzeka, ukwenzela ukuba emva kokufumana ingxelo yephutha echaphazelekayo, isixhobo se-peripheral asikwazi ukwenza impendulo efanelekileyo ngexesha, kwaye umxholo wolwazi oluphumayo olufanelekileyo lufikile kwakhona. Ngaloo ndlela, ukuma okungalunganga kuyaphetshwa ngoko nangoko.

Kolu qukuqelo lwenkqubo, isiphumo sibekwe kwisiphazamiso sokwenziwa kwexesha, esinokukuphepha ngokufanelekileyo ukusebenza kwempazamo yokuphuma. (2) Ukuhluza Digital ijolise kuphawu oluqokelelweyo ubunzima umnatha data, nto leyo edla ngokuba nempembelelo engacwangciswanga, ngoko ke kuyimfuneko ukufumana ulwazi lwedatha kufutshane nexabiso lokwenyani inqaku evela data data iimveliso series, kwaye ufumane isiphumo nge iqondo eliphezulu lokwenyani. Kwisoftware yefowuni ephathwayo, indlela eqhelekileyo kukucoca idijithali.

Olu qukuqelo lwenkqubo lwahlulwe lubeyi-data emileyo kunye ne-dynamic screening weighting. Ngenxa yeendlela ezahlukeneyo zokulinganisa, iindlela ezikhethiweyo zokucoca idijithali nazo zahlukile. Iindlela ezahlukeneyo zokucoca idijithali ezamkelwe zezi ndlela zimbini zokulinganisa ziboniswe ngezantsi ngokulandelelanayo.

¹Ubungakanani bedatha engatshintshiyo: Uqwalaselo olungundoqo lobunzima bedatha engatshintshiyo kukuthembeka kunye nokuchaneka kwesoftware yenkqubo. Kuyimfuneko ukuqwalasela ukuzinza kobudlelwane bolwazi olubonakalisiweyo phantsi kweemeko ezizinzileyo kunye nokuphendula ngokukhawuleza ngexesha lokulayisha. Ngoko ke, ukuchongwa kokuthembeka kolwazi lwedatha eqokelelweyo kufuneka kuqhutywe kuqala, kwaye ke isisombululo sokucoca idijithali kufuneka senziwe.

Kwinkqubo yokucoca idijithali, indlela yokucoca i-avareji ehambayo ikhethiwe ukuphucula isiphumo sokucoca. Indlela ethile yile ilandelayo: ixesha ngalinye isampuli ithathwa, enye yolwazi lokuqala lwedatha isusiwe, kwaye ke ixabiso lesampulu yeli xesha kunye nexabiso lesampula lamaxesha amaninzi adlulileyo lilinganiselwe kunye, kunye nexabiso elifanelekileyo lesampula elifunyenwe ngu. umntu angahanjiswa ukuze asetyenziswe. Ke ngoko, oku kuphucula ukusetyenziswa kwesoftware yenkqubo.

Ukukhethwa kwesampulu rhoqo N kunengozi enkulu kwisiphumo sokucoca. I-N enkulu kukuba, ngcono eyona mpembelelo, kodwa iya kubeka emngciphekweni impendulo eguquguqukayo yesoftware yenkqubo. Kulo mlawuli wokulinganisa, ukwenzela ukuba kuphuculwe ukuthembeka kwesofthiwe yenkqubo kunye nokukwazi ukuphendula ngokukhawuleza, i-N i-32 xa izinzile, kunye ne-8 xa ingazinzile.

Ngenxa yokukhetha indlela yokucoca efanelekileyo, ukuthembeka kunye nokuchaneka kwesofthiwe yenkqubo kunye nexesha layo lokuphendula lokulayisha liye laphuculwa ngakumbi.ºUkuhlolwa okunamandla kunye nokulinganisa: Kwi-screening eguquguqukayo kunye nokulinganisa, ukunyathela ngokukhawuleza kusekelwe kwiqonga lokulinganisa. Ukunyathela kwisikali ngaphakathi kwe-1.5 imizuzwana, ngoko ke isampuli kufuneka yenziwe kwi-1 yesibini.

Ngaloo ndlela, i-frequency yesampuli ilinganiselwe. Ukongeza, ngenxa yokuba ukunyathela kuya kubangela ukungcangcazela okuthile xa kulungelelaniswa ngokukhawuleza kwiqonga lokulinganisa, kuya kuchaphazela ixabiso lesampuli. Ke ngoko, kubaluleke kakhulu ukuqwalasela ukuba loluphi ulwazi lwedatha olusebenzayo kwaye luhlobo luni lwetekhnoloji yokucoca idijithali ekhethiweyo ukucinezela ukwenzakala kwe-symmetry enzima yokuphazamiseka kwe-electromagnetic.

Ngokutsho koqwalaselo oluthile, i-multihead weigher ye-weigher ye-weigher ye-weighing data signal waveform iboniswe kwi-Figure 5. Kulo mfanekiso, ukususela ekufikeni kokunyathela ukuya kwi-platform yokulinganisa kude kube ukuhamba kwayo kuhlulwe kwiikhonkco ezintathu: isigaba sokuqala lixesha t, icandelo, eliyinkqubo yonke ukusuka ekufikeni kokunyathela ukuya kwiqonga lokulinganisa de libe liphelele kwiqonga lokulinganisa. Isiginali yedatha yobunzima bomnatha ilapha. Inqanaba lesibini linqanaba lesithoba, ukunyathela ngokupheleleyo kwiqonga lokulinganisa, kwaye eli xesha linqanaba lokulinganisa; Inqanaba lesithathu lixesha t. Icandelo yinkqubo yonke yokuba ukunyathela kushiya iqonga lokulinganisa, kwaye isibonakaliso sedatha ye-net weight siyancipha ngokukhawuleza ukuya kwi-zero ngeli xesha.

Ekuqaleni nasekupheleni kwamacandelo alithoba, isibonakaliso sedatha esinesisindo sifumana iziphumo ezinzima. Kwicandelo leentaba, oko kukuthi, xa ukunyathela kuphakathi kweqonga lokulinganisa, isignali yedatha yokulinganisa izinzile. Ngoko ke, kungcono kakhulu ukukhetha ulwazi lwedatha ye-Δt uluhlu lwexesha.

Sebenzisa isikali esibekiweyo ukuhamba ukuya esiphelweni sokutshintsha kombane ukuze uqalise isilawuli sokulinganisa ukufumana ulwazi oluguquguqukayo lwesampulu yedatha, kunye nesampulu ngexesha lentaba. Iisampulu rhoqo N inxulumene nereyithi yesampulu. Ukukhawuleza kwesantya sesampulu, kokukhona iphezulu i-frequency eqokelelweyo ye-N. Ukufakwa kokutshintshwa kwefoto yombane kufuneka kuqinisekise ukuba idatha ebonakalayo eqokelelweyo yinkcazelo yedatha xa into eza kulinganiswa ifumaneka kwisixeko sase-Weitaishan.

Kulwazi lwedatha ye-N eqokelelweyo, zonke zineenxalenye zempembelelo ezahlukeneyo, ngoko ke kuyimfuneko ukukhetha indlela yokucoca efanelekileyo ukufumana ixabiso lokwenyani lobunzima bokunyathela. Le nkqubo ikhetha itekhnoloji yokucoca ehlanganisiweyo, oko kukuthi, ukusetyenziswa kweendlela ezimbini okanye ngaphezulu zokucoca idijithali kudityaniswe kwaye zisetyenziswe, ezingonelanga ukuba zincedisane, ukuze kuphuculwe eyona mpembelelo yokucoca, ukuze kuphunyezwe eyona nyani. isiphumo esingenakuphunyezwa ngendlela enye yokucoca. Apha, indlela yokucoca edibanisa ixabiso eliphezulu lokucoca indlela kunye ne-arithmetic ithetha indlela yokucoca ikhethiwe.

Ukuhluza i-De-maxima kuqala kususa ixabiso lempembelelo ebalulekileyo ye-pulse enye, kwaye ayibhaliseli ukubala ixabiso eliphakathi, ukuze ixabiso lemveliso lokuhluza intsingiselo lisondele kwixabiso lokwenyani. Umgaqo osisiseko we-algorithm yokuphucula ngolu hlobo lulandelayo: qhubeka nesampulu yamaxesha e-N, uqokelele kwaye ucele inceba, kwaye ufumane awona maxabiso aphezulu kunye nawona mancinci kuwo, kwaye emva koko uthabathe awona maxabiso aphezulu kunye nobuncinci kwingqokelela kunye nokuthe nkqo. , kwaye ubale ngokwe-N enye okanye ezimbini ixabiso lesampulu. kuthetha, oko kukuthi, ukufumana ixabiso elamkelekileyo lesampulu. Itshathi yokuhamba kwenkqubo yokucoca i-compound iboniswe kwidayagram ye-waveform yokulinganisa umqondiso wedatha kwi-Fig. ixesha t, icandelo, elixesha xa ukunyathela kufika kwisikali. Yonke le nkqubo ukusuka eqongeni de ngokupheleleyo kwiqonga isikali, umqondiso data ubunzima umnatha ngokucothayo ukunyuka ngeli xesha; inqanaba lesibini lixesha lesithoba, ukunyathela ngokupheleleyo kwiqonga lesikali, eli xesha licandelo lokulinganisa; Inqanaba lesithathu Elo lixesha t.

Icandelo yinkqubo yonke yokuba ukunyathela kushiya iqonga lokulinganisa, kwaye isibonakaliso sedatha ye-net weight siyancipha ngokukhawuleza ukuya kwi-zero ngeli xesha. Ekuqaleni nasekupheleni kwamacandelo alithoba, isibonakaliso sedatha esinesisindo sifumana iziphumo ezinzima. Kwicandelo leentaba, oko kukuthi, xa ukunyathela kuphakathi kweqonga lokulinganisa, isignali yedatha yokulinganisa izinzile.

Ngoko ke, kulungele ngakumbi ukukhetha ulwazi lwedatha yexesha le-Δt. Sebenzisa isikali esibekiweyo ukuhamba ukuya esiphelweni sokutshintsha kombane ukuze uqalise isilawuli sokulinganisa ukufumana ulwazi oluguquguqukayo lwesampulu yedatha, kunye nesampulu ngexesha lentaba. Iisampulu rhoqo N inxulumene nereyithi yesampulu. Ukukhawuleza kwesantya sesampulu, kokukhona iphezulu i-frequency eqokelelweyo ye-N.

Ufakelo lwe-photoelectric switch kufuneka luqinisekise ukuba i-arithmetic mean ye-values ​​eqokelelweyo kwi-formula kunye ne-N yi-arithmetic mean ye-2 ye-sampling values; w lixabiso lesampulu ye-i-th; N iisampulu rhoqo. Ukuze kube lula ukubala, i-frequency yesampulu ikhethwa ngokubanzi njengo-6, 10, 18 njengo-2 kumandla exabiso elipheleleyo lika-2 dibanisa 2, ekulula ukusebenzisa i-shift endaweni yokwahlula. Kule nkqubo yokuhamba, isisombululo sikhethwa ngelixa isampuli, ngoko akukho mfuneko yokuphuhlisa indawo yokugcina ulwazi lwedatha kwirula AM.

Emva kokucoca idijithali, ixabiso le-W lifunyenwe, kwaye ke iindlela zokucwangcisa idatha ezifana nokuxobula kunye nokuguqulwa kwempazamo okuphakathi kuqhutyelwa ukufumana ixabiso lobunzima bokunyathela ulwazi lokubonisa, ukuchongwa kunye nokukopisha. Emva kokuba iswitshi yesibini yefoto yombane ifumanise ukuba ukunyathela kushiye ngokupheleleyo iqonga lokulinganisa, qalisa isihlanganisi sokulandela umkhondo se-zero-point, khetha isampulu enkulu kwaye utsale itekhnoloji yokucoca umndilili, kwaye uyisuse ngokuzenzekelayo iitare, ukuze ulungiselele ukufika ukunyathela okulandelayo. Kwamkele ukulungiselela kwangaphambili. 3. Isiphelo Umlawuli wokulinganisa unemisebenzi epheleleyo kunye nokuphazamiseka okunamandla okuchasayo. Ayifanelekanga kuphela ukunyathela ukukhangela umsebenzi kwintsimi yerabha evuthisiweyo, kodwa ifanelekile ekusebenzeni kweentlobo ezahlukeneyo zokulinganisa i-multihead ezifana namaqanda, iingqekembe, imfuyo, kunye nemigca yemveliso yemizi-mveliso.

Kweli nqanaba, i-multihead weigher eyaziswa ngabavelisi abathile kwilizwe lethu isetyenziswe ngaphezu kweminyaka elishumi. Ezinye izilawuli zobunzima azisakwazi ukusebenza ngokuqhelekileyo, kwaye zifuna ukutshintshwa ngokungxamisekileyo. Ukongeza, kukho nabanye abavelisi abasasebenzisa i-pedal-type multihead weigher, engenakuthathwa njengeyimfuneko kwimveliso nakwimveliso. Ke ngoko, isilawuli sokulinganisa sinexabiso lentengiso eluncedo kakhulu namhlanje.

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