Momwe mungasankhire choyezera mitu yambiri moyenera

Wolemba: Smartweigh-Multihead Weighter

Multihead weigher ndi chipangizo chosinthira mphamvu kupita kumagetsi chomwe chimatha kusintha mphamvu kukhala ma siginecha amagetsi, ndipo ndiye gawo lalikulu la weigher yamitundu yambiri. Pali mitundu yambiri ya masensa omwe amatha kumaliza kusinthika kwamagetsi, makamaka kuphatikiza mtundu wa mphamvu yamphamvu, maginito amphamvu ndi capacitive sensor. Kufunika kwa mtundu wa mphamvu ya maginito ndi kusanthula kwamagetsi, sensa ya capacitor ndi gawo la choyezera mutu wambiri, ndipo makina olemetsa amtundu wamtundu wokaniza amagwiritsidwa ntchito kwambiri pamakina ambiri olemera.

The resistance strain multihead weigher ndi yosavuta mwamapangidwe, yokwera kwambiri, ndipo imakhala ndi machitidwe osiyanasiyana, ndipo ingagwiritsidwe ntchito m'malo achilengedwe osauka. Chifukwa chake, choyezera chopinga cha multihead weigher chimapezeka mu weigher ya multihead. The resistance strain multihead weigher imapangidwa makamaka ndi polyurethane elastomer, resist strain gauge ndi compensation power circuit.

Polyurethane elastomer ndi gawo lokhazikika la choyezera mutu wambiri, wopangidwa ndi chitsulo chamtengo wapatali cha carbon ndi mbiri zapamwamba za aluminiyamu aloyi. Kukaniza kupsinjika kumapangidwa ndi zojambula zachitsulo zomwe zimakhazikika mumtundu wa data ya gridi, ndipo zoyezera zinayi zokanira zimamatiridwa ku polyurethane elastomer ndi njira yopangira mlatho. Pankhani yakusowa mphamvu, zopinga 4 za dera la mlatho zimakhala ndi mtengo womwewo, dera la mlatho limakhala loyenera, ndipo zotsatira zake ndi zero.

Pamene polyurethane elastomer imapunduka ndi mphamvu, choyezera champhamvu chokana chimapundukanso. Panthawi yonse ya polyurethane elastomer yomwe imayendetsedwa ndi mphamvu ndikupindika, miyeso iwiri yotsutsa imatambasulidwa, waya wachitsulo amatambasulidwa, ndipo kukana kumawonjezeka, ndipo ena awiri amakakamizidwa, ndipo kukana kumachepa. Mwanjira iyi, gawo loyambira la mlatho silikuyenda bwino, ndipo pali kusiyana kwamagetsi ogwirira ntchito mbali zonse za mlatho. Kusiyana kwamagetsi ogwirira ntchito kumakhudzana ndi kukula kwa mphamvu pa polyurethane elastomer. Yang'anani kusiyana kwamagetsi ogwirira ntchito kuti mupeze kukula kwa mphamvu ya sensa, mphamvu yogwira ntchito Pambuyo poyang'anitsitsa chizindikiro cha deta ndikuwerengedwa ndi gulu la zida, kuti mugwiritse ntchito bwino makonzedwe amitundu yosiyanasiyana ya multihead weigher, choyezera cha multihead chimapangidwa ndi mitundu yosiyanasiyana. mawonekedwe, ndipo dzina la sensa nthawi zambiri limatchedwanso molingana ndi mawonekedwe ake.

Mwachitsanzo, stacking chain sensor (yofunika yamagetsi yamagalimoto amagetsi), mtundu wa cantilever mtengo (pansi, sikelo yosungiramo zinthu, sikelo yamagetsi yamagalimoto), mtundu wa mzati (magalimoto amagetsi, sikelo yosungiramo katundu), mtundu wagalimoto (mulingo), mtundu wa s (nyumba yosungiramo zinthu). masikelo) ndi zina zambiri. Sing'anga yoyezera mitu yambiri imatha kulemba masensa m'mapangidwe angapo. Ngati sensa yasankhidwa bwino, imathandizira kusintha mawonekedwe a multihead weigher.

Pali mafotokozedwe ambiri ndi mitundu ya zoyezera zovuta za multihead, kuyambira mazana angapo magalamu mpaka matani mazana angapo. Posankha muyeso wa weigher wa multihead weigher, uyenera kufotokozedwa molingana ndi kukula kwa choyezera chomwe chimagwiritsidwa ntchito kwambiri. Ulamuliro wa chala chachikulu ndi motere: kuchuluka kwa sensor katundu (kuchuluka kovomerezeka kwa sensa imodzi x chiwerengero cha masensa) = 1/2 ~ 2/3 ya kulemera kwakukulu kwa multihead weigher.

Mulingo wolondola wa choyezera mutu wambiri umagawidwa m'magulu anayi: a, b, c, ndi d. Magiredi osiyanasiyana ali ndi malire osiyana a zolakwika. Masensa a Class A amatchulidwa max.

Nambala pambuyo pa giredi imayimira mtengo wotsimikizira za metrological, kukulira kwa data, kumapangitsa kuti sensor ikhale yabwinoko. Mwachitsanzo, C2 imatanthawuza kalasi C, 2000 metrological verification values ​​C5 imatanthauza C kalasi, 5000 metrological verification values. Mwachiwonekere C5 ndi yokwera kuposa C2.

Masensa wamba ndi C3 ndi C5, ndipo magawo awiriwa a masensa amatha kugwiritsidwa ntchito kupanga zoyezera mitu yambiri ndi kalasi yolondola ya III. Cholakwika cha multihead weigher chimayamba makamaka ndi cholakwika cha discrete system, cholakwika chalag, cholakwika chobwerezabwereza, kupumula kupsinjika, cholakwika chowonjezera cha kutentha kwa zero point ndi cholakwika chowonjezera cha kutentha komwe kumachokera. Masensa a digito omwe adawonekera m'zaka zaposachedwa amayika gawo lamagetsi la A / D ndi gawo lamagetsi la CPU mu sensa. Linanena bungwe la sensa si analogi ntchito voteji voteji chizindikiro, koma ukonde kulemera analogi chizindikiro chathetsedwa ndi yankho, amene ali ubwino zotsatirazi: 1. Chida gulu zizindikiro deta aliyense sensa digito akhoza kusonkhanitsidwa padera, kuwerengeredwa malinga ndi liniya equation, ndipo kachipangizo aliyense akhoza paokha calibrated, ndi kuthekera kusintha zolakwa za ngodya zinayi nthawi imodzi ndi mkulu kwambiri.

Mutu waukulu kwambiri muzitsulo zamagulu ambiri pogwiritsa ntchito masensa a digito ndi analogi ndi kusintha kwa zolakwika za ngodya zinayi, zomwe nthawi zambiri zimafuna kuwerengetsa kangapo kuti zifotokoze, nthawi iliyonse kusuntha kulemera kolemera, komwe kumawononga nthawi komanso kugwira ntchito. 2. Chifukwa chakuti chida chogwiritsira ntchito chimatha kuzindikira zizindikiro za deta za masensa onse, mavuto a masensa onse amatha kuwoneka kuchokera ku gulu la zida, zomwe zimakhala zosavuta kukonza. 3. Sensa ya digito imatumiza chizindikiro cha analogi kupyolera mu mawonekedwe a 485, ndipo kufalitsa ndi mtunda wautali popanda kukhudzidwa.

Chotsani zovuta komanso zovuta zomwe zingachitike pakufalitsa ma pulse signal. 4. Zolakwa zosiyanasiyana za sensa zimatha kusinthidwa molingana ndi microcontroller mkati mwa sensa ya digito, kotero kuti chidziwitso cha deta cha sensor sensor ndicholondola. Woyeza ma multihead weigher amatchedwa dongosolo lapakati lamanjenje la multihead weigher, ndipo mawonekedwe ake makamaka amatsimikizira kulondola ndi kudalirika kwa woyezera mutu wambiri.

Popanga multihead weigher, funso la momwe mungagwiritsire ntchito masensa nthawi zambiri limakumana. Woyeza ma multihead weigher kwenikweni ndi chipangizo chomwe chimasintha chizindikiro cha data chapamwamba kukhala chotulutsa chamagetsi chamagetsi chomwe chingayesedwe molondola. Chinthu choyamba choyenera kuganizira mukamagwiritsa ntchito sensa ndi malo enieni a ofesi yomwe sensor ili.

Izi ndizofunikira makamaka pakugwiritsa ntchito bwino masensa, ndipo zimagwirizana ndi ngati sensa imatha kugwira ntchito bwino ndi chitetezo china ndi moyo wautumiki, komanso ngakhale kudalirika ndi chitetezo cha makina onse olemera. Kuwonongeka komwe kumachitika chifukwa cha chilengedwe ku sensa kumakhala ndi izi: (1) Kutentha kwachilengedwe kwachilengedwe kumapangitsa kuti sensa isungunuke zokutira, kuwotcherera, komanso kusintha kwamapangidwe pakupsinjika kwamatenthedwe a polyurethane elastomer. Zomverera zomwe zimagwira ntchito m'malo otentha kwambiri achilengedwe nthawi zambiri zimasankha masensa osamva kutentha, komanso zimafunikira kuwonjezera kutsekereza kwamafuta, kuziziritsa kwamadzi, kuziziritsa mpweya ndi zida zina.

(2) Zowopsa za utsi ndi chinyezi ku zolakwika zazifupi za masensa. M'malo achilengedwe pano, sensor yotulutsa mpweya kwambiri iyenera kugwiritsidwa ntchito. Masensa osiyanasiyana ali ndi njira zosiyana zosindikizira, ndipo ntchito yosindikiza ndi yosiyana kwambiri.

Kusindikiza kwanthawi zonse kumaphatikizapo kudzaza kwa sealant ndi zida zamakina zokutira pepala labala, kuwotcherera kwamagetsi (makina owotcherera a arc, ndi zina zotere. Kuchokera ku zotsatira zenizeni za kusindikiza, kusindikiza kusindikiza kwamagetsi ndikobwino kwambiri, ndipo mlingo wodzaza ndi kusindikiza ndi wochepa. Kwa sensa yomwe imagwira ntchito pamalo oyera komanso owuma m'chipindamo, mutha kusankha sensor yokhala ndi zomatira. Pakuti kachipangizo ntchito chilengedwe ndi chinyezi mkulu ndi utsi, muyenera kusankha zimachitika kugwedeza absorber kutentha kusindikiza kapena Pulse shock absorber kuwotcherera kusindikiza, zingalowe ma CD nayitrogeni wodzazidwa kachipangizo.

(3) Mu chilengedwe ndi dzimbiri mkulu, monga chinyezi, kuzizira, asidi ndi zamchere, zomwe zimayambitsa kuwonongeka kwa polyurethane elastomer, yochepa dera kulephera ndi zoopsa zina kwa kachipangizo, wosanjikiza akunja ayenera kusankhidwa kupopera electrostatic kapena kupopera mbewu mankhwalawa. Chophimba chachitsulo chosapanga dzimbiri, chomwe chimakhala ndi kukana kwa dzimbiri komanso ntchito yabwino yosindikiza. sensa. (4) Kuvulaza kwa maginito ku sensa linanena bungwe chaotic deta chizindikiro. Pankhaniyi, chitetezo cha sensor yankho chimawunikidwa mosamalitsa kuti muwone ngati chili ndi chitetezo chokwanira chamagetsi.

(5) Kuwotcha, kuyaka, ndi kuphulika sikungoyambitsa zoopsa zapamwamba kwa masensa, komanso kumabweretsa ziwopsezo zazikulu ku zida zina zamakina ndi chitetezo cha moyo. Chifukwa chake, masensa omwe amagwira ntchito m'malo oyaka moto, oyaka, komanso ophulika amafotokoza momveka bwino mawonekedwe amtundu wosaphulika: masensa osaphulika ayenera kugwiritsidwa ntchito pamalo oyaka, oyaka, komanso ophulika. Chophimba chosindikizira cha mtundu uwu wa sensa sichiyenera kungoganizira zothina, komanso kuganizira mozama mphamvu yopondereza ya mtundu wa kuphulika kwa mtundu wa kuphulika ndi mtundu wa chinyezi, madzi ndi kuphulika kwa chingwe.

Kachiwiri, kusankha kwa chiwerengero chonse cha masensa ndi miyeso: kusankha kwa chiwerengero chonse cha masensa kumadalira cholinga chachikulu cha multihead weigher, mlingo wa mfundo zothandizira za thupi lonse (chiwerengero cha mfundo zothandizira ziyenera zikhazikike pa mphamvu yokoka yapakati pa sikelo yodutsana ya geometry ya thupi ndi benchmark ya chigawo chapakati pa mphamvu yokoka). Nthawi zambiri, ma fulcrum ena a sikelo amagwiritsa ntchito masensa ena, koma masikelo apadera monga mamba a mbedza amagetsi amangosankha kachipangizo kamodzi, ndipo masikelo ena a electromechanical engineering fusion ayenera kugwiritsa ntchito kuchuluka kwa masensa malinga ndi momwe zilili. Kusankhidwa kwa kuyeza kwa sensa kungayesedwe molingana ndi zinthu monga kukula kwa sikelo, kuchuluka kwa masensa, kulemera kwa sikelo yokha, komanso kulemera kwa gudumu lalikulu ndi katundu.

Nthawi zambiri, kuyandikira kuchuluka kwa kuyeza kwa sensa kumatengera kuchuluka kwa sensa iliyonse, ndiye kuti kuchuluka kwakeko kumakwera kwambiri. Komabe, muzochita zenizeni, kuwonjezera pa kutchedwa zinthu, palinso kulemera kwa sikelo yokha, kulemera kwa tare, kulemera kwa gudumu ndi kugwedezeka kwamphamvu. Chifukwa chake, mukamagwiritsa ntchito gawo la kuyeza kwa sensor, zinthu zambiri ziyenera kuganiziridwa kuti zitsimikizire chitetezo komanso moyo wautali wa sensor.

Njira yowerengera kuchuluka kwa sensayi yakhala ikufotokozedwa pambuyo poyesera zambiri pambuyo poganizira zinthu zosiyanasiyana zomwe zimayika pachiwopsezo cha thupi. Njirayi imawerengedwa motere: C=K-0K-1K-2K-3(Wmax+W)/N. C- Chiwerengero chovotera cha sensa ya munthu W- Kulemera kwa sikelo yokha Wmax- Imatchedwa mtengo wapamwamba kwambiri wa kulemera kwa chinthu N- Chiwerengero chonse cha ma fulcrums osankhidwa ndi sikelo K-0- Inshuwaransi yazamalonda index, kawirikawiri 1.2 ~ 1.3 K-1- wa intermediary Shock index K-2-scale gravity center point offset index K-3-air pressure index.

Mwachitsanzo, pa sikelo yamagetsi ya 30t, kulemera kwakukulu ndi 30t, kulemera kwa sikelo yokha ndi 1.9t, masensa 4 amasankhidwa, ndipo malinga ndi momwe zinalili panthawiyo, inshuwaransi yamalonda K-0 = 1.25 , zolozera za K-1=1.18, ndi pakati pa mphamvu yokoka zimasankhidwa. Mlozera wopatuka wa mfundo K-2-=1.03, index pressure ya mpweya K-3=1.02 Yankho: Malinga ndi njira yowerengetsera ya kayezedwe ka sensa: c=K-0K-1K-2K-3(Wmax+W)/N. c=1.25×1.18×1.03×1.02×(30+1.9)/4=12.36t. Chifukwa chake, kuchuluka kwa sensayi ndi 15t (kukweza kwa sensa nthawi zambiri kumakhala 10T, 15T, 20t, 25t, 30t, 40t, 50t, etc., pokhapokha ngati ndi makonda apadera).

Malinga ndi zomwe zinachitikira ntchito, ntchito ya makina olemera nthawi zambiri mkati mwake muyeso wa 30% ~ 70%, koma makina olemera amakhudza kwambiri ntchito yonse yogwiritsira ntchito, monga mayendedwe amphamvu, mphamvu zamagetsi zamagetsi, zosapanga dzimbiri. zitsulo mbale sikelo, etc. Apanso, magawo ogwiritsira ntchito amitundu yosiyanasiyana amayenera kuganiziridwa. Chinsinsi cha kusankhidwa kwa mawonekedwe a sensa ndi mtundu wa kulemera ndi kukhazikitsidwa kwa malo amkati, kuonetsetsa kuti malo oyenera, kulemera kwake ndi kodalirika, kumbali ina, malingaliro a wopanga ayenera kuganiziridwa. Opanga nthawi zambiri amafunikira gawo la sensa ya sensayo malinga ndi kupirira kwa sensa, magawo a magwiridwe antchito, njira yoyika, mawonekedwe omangika, zinthu za polyurethane elastomer ndi mawonekedwe ena Ma sensor a Beam ndi oyenera kudzikundikira chitsulo ndikutulutsa masensa unyolo monga masikelo azinthu, mamba a lamba wamagetsi, ndi kuwunika. mamba.

Pamapeto pake, mulingo wolondola wa sensor uyenera kusankhidwa. Kulondola kwa sensa kumaphatikizapo kusagwirizana kwa sensa, kupumula kupsinjika, kukonza kupsinjika, kuchedwa, kubwereza, kukhudzika ndi zizindikiro zina zogwirira ntchito. Mukamagwiritsa ntchito sensa, osati malamulo olondola otchulidwa pakompyuta, komanso mtengo wake uyenera kuganiziridwa.

Kusankhidwa kwa milingo ya sensa kuyenera kuganizira njira ziwiri zotsatirazi 1. Ganizirani zomwe zimaperekedwa pakulowetsa zida. Chizindikiro choyezera chikuwonetsa zotsatira zoyezera pambuyo potulutsa deta ya multihead weigher kukhala yayikulu ndipo kutembenuka kwa A / D kwathetsedwa. Chifukwa chake, chizindikiro cha data chotulutsa cha multihead weigher chikuyenera kukhala chokulirapo kuposa kukula kwake komwe kumafotokozedwa ndi gulu la zida. Kukhudzika kwa kutulutsa kwa multihead weigher kumabweretsedwa munjira yofananira pakati pa sensa ndi gulu la zida, ndipo zotsatira zowerengera ziyenera kukhala zazikulu kuposa kukhudzidwa kwazomwe zafotokozedwa ndi gulu la zida.

Njira yofananira ya multihead weigher ndi gulu la zida: kukhudzika kwa mita yolemetsa * mphamvu yamagetsi yolimbikitsira * kukula kwa sikelo, kuchuluka kwa myopia ya mita yolemetsa * kuchuluka kwa masensa * kuchuluka kwa kuyeza wa sensor. Mwachitsanzo, kachulukidwe ma CD makina ndi kulemera kwa 25kg ndi sikelo ndi lalikulu myopia 1000 kuyeza ranges kusankha 3 L-BE-25 masensa ndi osiyanasiyana kuyeza 25kg ndi tilinazo 2.0±0.008mV/V, sankhani AD4325 chida gulu mamba ndi miyala Chipilala mlatho magetsi ntchito mphamvu ya 12V. Imafunsa ngati sensa yosankhidwa iyenera kuphatikizidwa ndi dashboard.

Yankho: Kukhudzika kolowera kwa gulu la zida za AD4325 ndi 0.6μV/d, kotero malinga ndi njira yofananira pakati pa weigher ya multihead ndi gulu la zida, chizindikiro cha data cha gulu la zida ndi 2×12×25/1000×3×25=8μV/d>0.6μV/d. Choncho, wolemera wosankhidwa wa multihead akhoza kuganizira za kayendetsedwe ka kayendetsedwe kake ka chida, chomwe chingaphatikizidwe ndi kusankha kwa gulu la zida. 2. Ganizirani za malamulo okhudza kulondola kwa maudindo apakompyuta.

Chiwonetsero chamagetsi chimapangidwa makamaka ndi magawo atatu: sikelo, sensa ndi gulu la zida. Posankha kulondola kwa multihead weigher, kulondola kwa multihead weigher ndikokwera pang'ono kuposa mtengo wowerengeka wa chiphunzitso choyambirira. Mfundo yofunikira nthawi zambiri imangokhala ndi zifukwa zenizeni, monga masikelo. Mphamvu yopondereza ya sikelo ndi yocheperako pang'ono, mawonekedwe a gulu la zida ndizabwino kwambiri, malo aofesi a sikelo ndizovuta komanso zina.

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