Mekhoa ea morao-rao ea ho Hlahisa Li-cable bakeng sa Lisebelisoa tsa IoT
Ntlafatso ea Inthanete ea Lintho (IoT) e entse hore lisebelisoa li be nyane, li boloke matla haholoanyane, 'me li "hokahane kamehla" haholoanyane. Ka mor'a li-sensor tse rarahaneng, li-module tsa seea-le-moea le li-chip tsa k'homphieutha, ho na le karolo e le 'ngoe e atisang ho hlokomolohuoa empa e le ea bohlokoa bakeng sa ts'ebetso: likhoele. Likhoele ha se feela li-conductor tsa motlakase, empa hape ke litsela tsa data, tse khethollang botsitso ba matla, tšireletso ho tšitiso ea motlakase, le "mokokotlo" oa ts'epo ea lisebelisoa tšimong. Hobane lisebelisoa tsa IoT hangata li beoa lifekthering, libakeng tsa kantle, likoloing, kapa libakeng tse koetsoeng, mekhoa ea tlhahiso ea likhoele e fetohile ho tobana le liphephetso: boholo bo kopaneng, phetiso ea data e potlakileng, tšebeliso e tlase ea matla, le ho tšoarella ho hoholo.
Tse latelang ke mekhoa ea morao-rao ea tlhahiso ea li-cable bakeng sa lisebelisoa tsa IoT tse sebelisoang haholo indastering, ho tloha boemong ba moralo ho isa ts'ebetsong ea tlhahiso.
1) Lisebelisoa tsa mokhanni oa moloko o mocha: ntlafatso lipakeng tsa ts'ebetso le ho tenyetseha
Ka setso, koporo e ntse e le kgetho ya mantlha ka lebaka la ho tsamaisa ha yona ka lebelo le bonolo ba ho e sebetsana. Leha ho le jwalo, dibakeng tsa sejwalejwale tsa IoT—haholoholo disebediswa tse aparwang, di-sensor tse tenyetsehang, le di-module tse tsamayang kamehla—di-cable tse bobebe tse nang le bophelo bo phahameng ba ho tenyetseha di a hlokahala.
Mekhoa e mecha e hatisa tšebeliso ea koporo e tšesaane e nang le likhoele tse ngata le bophara bo bonyenyane ba likhoele. Sena se etsa hore thapo e tenyetsehe haholoanyane ntle le ho fokotsa ts'ebetso ea motlakase. Bakeng sa lits'ebetso moo boima bo fokolang bo lakatsehang, mefuta e fapaneng e kang aluminium ea koporo (CCA) e sebelisoa lits'ebetsong tse itseng tse sa hlokeng maqhubu a phahameng, leha ho hlokahala tlhokomelo mabapi le khanyetso le matla a khokahano.
Ho phaella moo, ditshebedisong tse feteletseng tsa IoT tsa indasteri kapa tsa dikoloi, di-conductor tse nang le kalafo ya bokahodimo (plating) di ntse di sebediswa ka ho eketsehileng—mohlala, koporo e manehilweng ka tin bakeng sa ho hanyetsa mafome le bonolo ba ho kopanya, kapa koporo e manehilweng ka silefera bakeng sa tshebetso e phahameng le botsitso ba mocheso.
2) Ho kenya le ho kenya thapo e thehilweng ho polymer ho tswetseng pele: ho hanela mocheso, ho hanela dikhemikhale, le ho ba bonolo ho boloka sebaka se le haufi.
Tikoloho tsa ts'ebetso ea IoT lia fapana haholo: li-sensor tsa temo li tobana le UV le pula, lisebelisoa tsa tlhahiso li tobana le oli le lik'hemik'hale, 'me lisebelisoa tsa bongaka li hloka lisebelisoa tse nang le chefo e tlase le tse tsitsitseng. Ka hona, ho na le boqapi bo boholo bo etsahalang thepa ea ho futhumatsa le ea ho roala jakete.
Mekhoa ea sejoale-joale e sebelisa li-polymer tse sebetsang hantle tse kang:
– TPU (Thermoplastic Polyurethane): e tenyetseha, e hanela ho kgohlahala, e loketse dithapo tse tsamayang kgafetsa.
– TPE/TPR: e tenyetseha mochesong o tlase, e phutholohile bakeng sa disebediswa tsa mohala.
– FEP/PTFE: e hanela mocheso le lik'hemik'hale haholo, 'me e loketse ho sebelisoa khafetsa.
– LSZH (Low Smoke Zero Halogen): ea bohlokoa bakeng sa polokeho, e fokotsa mosi o chefo ha o cha (e thusa mehahong le lipalangoangng).
Ntle le dikgetho tsa thepa, bahlahisi ba boetse ba sebedisa mekgwa e nepahetseng ya ho ntsha dijakete ho etsa dijakete tse tshesane empa tse matla. Disebedisweng tse nyane tsa IoT, phokotso ya botenya ba jakete ya di-micron tse makgolo a mmalwa feela e ka boloka sebaka se seholo kahare ho sekwahelo.
3) Ts'ebetso ea ho ntša lintho tse nyane le mamello e tiileng bakeng sa likhoele tse nyane tsa bophara
IoT e tsamaisa miniaturization: dikheibole tsa di-sensor, dikhamera tse nyane, di-module tsa puisano, le dikgokelo tsa PCB tsa kahare hangata di hloka bophara bo bonyenyane haholo. Mona ke moo micro-extrusion e bang mokhoa wa bohlokwa.
Ka taolo e tiileng ea mocheso, khatello le lebelo la ho hula, micro-extrusion e khona ho hlahisa insulation e tšesaane ka mamello e tsitsitseng.
– impedance e tsitsitseng haholoanyane (ea bohlokoa bakeng sa matšoao a lebelo le phahameng),
- boima bo bobebe,
– le ho kenya habonolo libakeng tse thata kapa litseleng tse rarahaneng tsa ho tsamaisa litsela.
Ho tsitsa ha bophara ho boetse ho ama boleng ba sehokelo sa crimp, kaha crimping e ameha haholo ka mefuta e fapaneng ea boholo.
4) Mekhoa ea sejoale-joale ea ho sireletsa: ho loantša EMI/RFI lisebelisoa tse teteaneng haholo
Hangata disebediswa tsa IoT di na le diradio (Wi-Fi, BLE, Zigbee, LTE-M/NB-IoT), di-switching regulator, le di-microcontroller—tseo kaofela e leng mehlodi ya lerata la motlakase. Dikheibole di ka sebetsa jwalo ka di-antenna tsa "phoso" tse nkang kapa tse fetisang tshitiso.
Mekhoa ea morao-rao ea tšireletso e kenyelletsa:
– thebe e lohiloeng ka bongata bo boholo bakeng sa ho hanyetsa mechine le tšireletso e felletseng ea EMI,
– thebe ea foil (aluminium-polyester) bakeng sa sekoahelo sa 100% le boima bo bobebe,
– motsoako oa foil le braid bakeng sa tumellano e ntle pakeng tsa ts'ebetso le ho tšoarella,
– hammoho le terata ea ho ntsha metsi e etsang hore ho be bonolo ho sila thebe.
Meleng ea data ea lebelo le phahameng kapa matšoao a analog a bonolo, litlhophiso tsa tšireletso le tsa ho thella li entsoe hammoho le moralo oa sistimi ho fokotsa li-loops tsa fatše le ho netefatsa botšepehi ba lets'oao.
5) Taolo ea ho sotha le ea impedance bakeng sa data e potlakileng le latency e tlase
Disebediswa tsa sejwalejwale tsa IoT di fetisa ho feta feela data e bonolo; disebediswa tse ngata di na le video, data ya sensor ya qeto e phahameng, kapa puisano ya nako ya sebele. Ka hona, theknoloji ya pair e sothileng e nang le sekgahla se itseng sa ho sotha e ntse e ata haholo, esita le ho wiring ya sesebediswa sa kahare.
Ho sotha ho thusa ho thibela crosstalk le EMI. Bakeng sa diprothokholo tse kang Ethernet, USB, kapa di-interface tse fapaneng (mohlala, RS-485, CAN, LVDS), taolo ya impedance e ba ya bohlokwa. Bahlahisi ba dikheibole jwale ba itshetlehile ka:
– tekanyo ea inthanete nakong ea tlhahiso,
– sebaka sa mokhanni,
– hammoho le ho khetha dielectric e sireletsang mocheso e nepahetseng ho boloka impedance e reriloeng.
Sephetho ke phetiso e tsitsitseng haholoanyane, sekhahla sa liphoso se fokotsehileng, le lisebelisoa tse hanelang haholoanyane tšitiso ea tikoloho.
6) Thapo e kopantsoeng: matla + data ka har'a sheath e le 'ngoe
Mokhoa o ka sehloohong oa IoT ke ho fokotsa palo ea likhoele: litsela tse fokolang li bolela ho kenngoa ka potlako le kotsi e tlase ea ho hloleha ha mechini. Ka hona, litharollo tse ngata li sebelisa likhoele tse kopantsoeng tse kopanyang:
– lipara tsa data (differential),
- li-cores tsa motlakase,
– esita le mela e meng ea taolo kapa ea matšoao,
ka baki e le 'ngoe.
Mekhoa ea tlhahiso ea lithapo tse kopantsoeng e hloka boenjiniere bo hlokolosi ba ka hare ba sebopeho ho thibela lerata la mohala oa motlakase ho sitisa phetiso ea data. Hangata sena se kenyelletsa karohano ea lera, li-filler, tšireletso e khethiloeng, kapa libaka tse fapaneng tsa ho sotha lipakeng tsa likarolo.
7) Ho tšepahala ho eketsehileng ha khokahano: ho thiba ka nepo le ho imolla khatello e kopaneng
Litsamaisong tsa IoT, ho hloleha hangata ha ho hlahe li-chip, empa ho etsahala likhokahanong—haholo-holo tšimong. Ka hona, boqapi bo etsahala qetellong ea thapo: ho felisoa le lihokelo.
Mekhoa ea sejoale-joale e kenyelletsa:
– ho thiba ka matla le ho beha leihlo ho netefatsa hore thiba ka 'ngoe e tsitsitse,
– tshebediso ya di-contact tse poleititsweng bakeng sa ho hanyetsa ho bola,
– ho etsa moedi o feteletseng (ho bopa sheath e sireletsang sebakeng sa kgokelo) bakeng sa ho imolla kgatello e betere le ho tiisa ho tiileng,
– le moralo oa ho fokotsa khatello o abang matla a ho tsikinyeha e le hore a se ke a lula sebakeng sa ho solder/crimp.
Ho IoT ya kantle, ho etsa moedi o feteletseng hangata ho kopanngwa le digasket kapa ditiiso ho fihlella kganyetso ya metsi le lerōle.
8) Likhoele bakeng sa libaka tse feteletseng: UV, metsi, thothomelo le ho hanela lik'hemik'hale
IoT e sebelisoa haholo libakeng tse thata: merafong, lifeme, masimong, likoung le likoloing. Mekhoa ea morao-rao e ikemiselitse ho:
– Jekete e hanelang mahlaseli a kotsi a UV e le hore e se ke ea robeha ha e le letsatsing,
– thepa e hanelang oli le lik'hemik'hale bakeng sa lifeme,
– sebopeho se thibelang ho thothomela se nang le se tlatsang le baki e loketseng,
– hammoho le dikgetho tsa ho thibela metsi mefuteng e meng ya dithapo tsa kantle ho thibela ho kenella ha metsi.
Ntle le thepa, liteko le tsona li ntse li thatafala haholo: liteko tsa ho kobeha tse pheta-phetoang, liteko tsa ho tsitlella, liteko tsa potoloho ea mocheso, le liteko tsa ho fafatsa letsoai bakeng sa ho bola.
9) Mokhoa oa tlhahiso o thehiloeng boleng: tlhahlobo ea inthanete le ho latelwa ha eona
Mekhoa ea morao-rao ha se feela ka thepa, empa hape le ka mekhoa. Lifeme tsa sejoale-joale tsa cable li sebelisa:
– tlhahlobo ea nako ea sebele ea bophara le liphoso tsa bokaholimo,
– tekanyo ea khanyetso, bokhoni le liparamente tsa phetisetso esita le nakong ea tlhahiso,
– hammoho le ho latelwa ha dintho ka ho tshwaya le ho rekota dihlopha tsa thepa.
Sena se bohlokoa bakeng sa lisebelisoa tsa IoT tse hlahisoang ka bongata: phetoho e nyane feela ka har'a thapo e ka baka mathata a maholo ho likete tsa diyuniti. Ka taolo ea boleng e tsamaisoang ke data, bahlahisi ba ka boloka botsitso lipakeng tsa lihlopha.
Ho koala
Mekhoa ea morao-rao ea tlhahiso ea lithapo bakeng sa lisebelisoa tsa IoT e bontša hore "thapo" ke karolo ea maano, eseng feela sesebelisoa. Ho tloha ho li-conductor tse tenyetsehang, tse ntle, ho kenya mocheso oa polymer ka mokhoa o tsoetseng pele, li-micro-extrusions, tšireletso ea sejoale-joale, taolo ea impedance, ho ea ho lithapo tse kopantsoeng le ho emisa ka nepo—kaofela li etselitsoe ho fihlela litlhoko tsa IoT: tse nyane, tse tšoarellang, tse bolokehileng, le tse tšepahalang ho fetiseng matla le data.
Haeba o rata, nka fetola sengoloa sena ho latela moelelo o itseng—mohlala, IoT ea indasteri (IIoT), lisebelisoa tsa lapeng tse bohlale, tse ka aparoang, kapa tsa kantle—mme ka eketsa mehlala ea litlhaloso tse tloaelehileng tsa cable sehlopheng ka seng.
