Amasu Akamuva Ekukhiqizweni Kwezintambo Zamadivayisi E-IoT
Ukuthuthukiswa kwe-Internet of Things (IoT) kwenze amadivayisi aba mancane, asebenzisa amandla kahle, futhi “ahlala exhunywe.” Ngemuva kwezinzwa eziyinkimbinkimbi, amamojula omsakazo, nama-computing chips, kunesici esisodwa esivame ukunganakwa kodwa esibalulekile ekusebenzeni: izintambo. Izintambo azizona nje iziqhubi zikagesi, kodwa futhi ziyizindlela zedatha, ezinquma ukuzinza kwamandla, zivikela ekuphazamisekeni kwe-electromagnetic, kanye “nomgogodla” wokuthembeka kwedivayisi ensimini. Ngenxa yokuthi amadivayisi e-IoT avame ukufakwa ezimbonini, ezindaweni zangaphandle, ezimotweni, noma ezindaweni ezivalekile, amasu okukhiqiza izintambo athuthukile ukuze abhekane nezinselele: usayizi omncane, ukudluliswa kwedatha okusheshayo, ukusetshenziswa kwamandla okuphansi, kanye nokuqina okuphezulu.
Okulandelayo amasu akamuva ekukhiqizweni kwekhebula lamadivayisi e-IoT asetshenziswa kabanzi embonini, kusukela ezingeni lokuklama kuya enkambisweni yokukhiqiza.
1) Izinto zokuqhuba zesizukulwane esisha: ukwenza ngcono phakathi kokusebenza nokuguquguquka
Ngokwesiko, ithusi lilokhu liyisinqumo esiyinhloko ngenxa yokuguquguquka kwalo okuphezulu kanye nokulula kokucutshungulwa. Kodwa-ke, ezindaweni zesimanje ze-IoT—ikakhulukazi amadivayisi agqokwayo, izinzwa eziguquguqukayo, kanye namamojula ahamba njalo—izintambo ezilula eziphila isikhathi eside kakhulu ziyadingeka.
Amasu amasha agcizelela ukusetshenziswa kwethusi elinomucu omncane elinenani eliphezulu lemicu kanye nobubanzi obuncane bemicu. Lokhu kwenza ikhebula liguquguquke kakhulu ngaphandle kokulahlekelwa ukusebenza kukagesi. Ezinhlelweni lapho kudingeka khona isisindo esincane, izinhlobo ezifana ne-copper-clad aluminium (CCA) ziyasetshenziswa kwezinye izinhlelo zokusebenza ezingadingi ugesi ophezulu, yize kudingeka ukuqaphela mayelana nokumelana namandla okuxhuma.
Ngaphezu kwalokho, ezisetshenziswa kakhulu ze-IoT zezimboni noma zezimoto, o-conductor abanezindlela zokwelapha ubuso (ukucwebezela) basetshenziswa kakhulu—isibonelo, ithusi elifakwe ithini lokumelana nokugqwala kanye nokulula kokugoqa, noma ithusi elifakwe isiliva ukuze lisebenze kahle kakhulu futhi lizinze ekushiseni.
2) Ukufakwa kwentambo okuthuthukisiwe okusekelwe ku-polymer kanye nejakethi: okumelana nokushisa, okumelana namakhemikhali, futhi okuvumela isikhala esincane.
Izindawo zokusebenza ze-IoT ziyahlukahluka kakhulu: izinzwa zezolimo zibhekene ne-UV nemvula, amadivayisi okukhiqiza abhekene namafutha namakhemikhali, kanti amadivayisi ezokwelapha adinga izinto ezinobuthi obuphansi nezizinzile. Ngakho-ke, kunezinto ezintsha ezibalulekile ezenzeka ezintweni zokuvikela ukushisa nezokubopha ijakhethi.
Amasu amanje asebenzisa ama-polymer asebenza kahle njenge:
– I-TPU (i-Thermoplastic Polyurethane): iyaguquguquka, ayivuvukali, ifanele izintambo ezihamba njalo.
– I-TPE/TPR: iyaguquguquka emazingeni okushisa aphansi, ikhululekile kumadivayisi eselula.
– I-FEP/PTFE: imelana kakhulu nokushisa namakhemikhali, futhi ilungele ukusetshenziswa kwemvamisa ephezulu.
– I-LSZH (I-Low Smoke Zero Halogen): ibalulekile ekuphepheni, inciphisa intuthu enobuthi lapho isha (iwusizo ezakhiweni nasezithuthweni).
Ngaphezu kokukhetha izinto ezibonakalayo, abakhiqizi basebenzisa namasu okukhipha ngokunemba ukudala amajakethi amancane kodwa aqinile. Kumadivayisi e-IoT amancane, ukuncipha kobukhulu bejakethi obungama-micron angamakhulu ambalwa nje kungasindisa isikhala esikhulu ngaphakathi kwe-enclosure.
3) Inqubo yokukhipha okuncane kanye nokubekezelelana okuqinile kwezintambo ezincane ezinobubanzi
I-IoT iqhuba ukwenziwa kube lula: izintambo zezinzwa, amakhamera amancane, amamojula okuxhumana, kanye nokuxhumeka kwe-PCB yangaphakathi kuvame ukudinga ububanzi obuncane kakhulu. Yilapho i-micro-extrusion iba khona inqubo ebalulekile.
Ngokulawulwa okuqinile kwezinga lokushisa, ingcindezi, kanye nesivinini sokudonsa, i-micro-extrusion iyakwazi ukukhiqiza ukufudumala okuncane ngokubekezelelana okuqhubekayo. Umphumela:
– ukuvimba okuzinzile (okubalulekile kumasignali asheshayo),
- isisindo esilula,
– kanye nokufakwa okulula ezindaweni ezixinene noma ezindleleni eziyinkimbinkimbi zokuhambisa imizila.
Ukungaguquguquki kobubanzi nakho kuthinta ikhwalithi yesixhumi se-crimp, njengoba i-crimping ibucayi kakhulu ekushintsheni kosayizi.
4) Amasu okuvikela esimanje: ukulwa ne-EMI/RFI kumadivayisi aminyene kakhulu
Amadivayisi e-IoT ngokuvamile aqukethe imisakazo (i-Wi-Fi, i-BLE, i-Zigbee, i-LTE-M/NB-IoT), izilawuli zokushintsha, kanye nama-microcontroller—konke okuyimithombo yomsindo we-electromagnetic. Amakhebula angasebenza njenge-antenna “engenangozi” ebamba noma edlulisa ukuphazamiseka.
Izindlela zakamuva zokuvikela zihlanganisa:
– isivikelo esilukiwe esinobukhulu obuphezulu sokumelana nomshini kanye nokuvikelwa okuphelele kwe-EMI,
– isivikelo se-foil (i-aluminium-polyester) sokumboza okungu-100% kanye nesisindo esincane,
– inhlanganisela ye-foil + braid ukuze kube nokuvumelana okuhle phakathi kokusebenza nokuqina,
– kanye nocingo lokukhipha amanzi okwenza kube lula ukugaya isivikelo.
Emigqeni yedatha yesivinini esikhulu noma ezimpawini ze-analog ezibucayi, ukwakheka kokuvikela kanye nokusekela phansi kuklanyelwe kanye nokuhlelwa kwesistimu ukunciphisa izihibe zomhlabathi nokuqinisekisa ubuqotho besignali.
5) Ukulawula ukusonta kanye nokuvimbela idatha okusheshayo kanye nokubambezeleka okuphansi
Amadivayisi e-IoT anamuhla adlulisa okungaphezu nje kwedatha elula; amadivayisi amaningi aphethe ividiyo, idatha yenzwa enesinqumo esiphezulu, noma ukuxhumana kwesikhathi sangempela. Ngakho-ke, ubuchwepheshe be-twisted pair obunesilinganiso esithile sokujika buya ngokuya buvame kakhulu, ngisho nasezintanjeni zangaphakathi zedivayisi.
Ukusonta kusiza ukucindezela i-crosstalk kanye ne-EMI. Kumaphrothokholi afana ne-Ethernet, i-USB, noma ama-differential interfaces (isb., i-RS-485, i-CAN, i-LVDS), ukulawulwa kwe-impedance kuba yinto ebalulekile. Abakhiqizi bekhebula manje bathembele ku:
- ukulinganisa okuku-inthanethi ngesikhathi sokukhiqiza,
- isikhala somqhubi,
– kanye nokukhetha i-dielectric evikelayo efanele ukuze kulondolozwe impedance eqondiwe.
Umphumela uba ukudluliselwa okuzinzile kakhudlwana, amazinga amaphutha anciphile, kanye namadivayisi amelana kakhulu nokuphazamiseka kwemvelo.
6) Ikhebula elihlanganisiwe: amandla + idatha eshedini elilodwa
Umkhuba oyinhloko ku-IoT ukunciphisa inani lamakhebula: izindlela ezimbalwa zisho ukufakwa okusheshayo kanye nengozi ephansi yokwehluleka kwemishini. Ngakho-ke, izixazululo eziningi zisebenzisa amakhebula ahlanganisiwe ahlanganisa:
– amabhangqa edatha (umehluko),
- ama-cores kagesi,
– ngisho nemigqa eyengeziwe yokulawula noma yesignali,
ngejakethi elilodwa.
Amasu okukhiqiza izintambo ze-hybrid adinga ubunjiniyela besakhiwo sangaphakathi obucophelelayo ukuze kuvinjelwe umsindo wezintambo zikagesi ukuthi ungaphazamisi ukudluliswa kwedatha. Lokhu kuvame ukuhilela ukuhlukaniswa kwezingqimba, izigcwalisi, ukuvikela okukhethiwe, noma ukujikijela okuhlukile phakathi kwezinto.
7) Ukwethenjwa kokuxhumeka okwandisiwe: ukugoba ngokunemba kanye nokukhululeka kokucindezeleka okuhlanganisiwe
Ezinhlelweni ze-IoT, ukwehluleka kuvame ukwenzeka hhayi kuma-chip, kodwa ezixhumeni—ikakhulukazi ensimini. Ngakho-ke, ukusungula izinto ezintsha kwenzeka ekugcineni kwekhebula: ukuphela kanye nezixhumi.
Amasu esimanje ahlanganisa:
– ukugoqa ngokulawula ngamandla nokuqapha ukuqinisekisa ukuthi i-crimp ngayinye iyahambisana,
- ukusetshenziswa kokuxhumana okunamathelisiwe ukuze kuvinjwe ukugqwala,
– ukubumba ngaphezulu (ukubumba igobolondo elivikelayo endaweni yokuxhuma) ukuze kuncishiswe ukucindezelwa okungcono kanye nokuvala okuqinile,
– kanye nomklamo wokukhulula ukucindezeleka ohambisa amandla okudonsa ukuze angahlali endaweni yokusoda/yokugoba.
Ku-IoT yangaphandle, ukubumba okungaphezulu kuvame ukuhlanganiswa nama-gasket noma izivalo ukuze kufezwe ukumelana namanzi nothuli.
8) Izintambo zezindawo ezibucayi kakhulu: i-UV, amanzi, ukudlidliza kanye nokumelana namakhemikhali
I-IoT isetshenziswa kabanzi ezindaweni ezinzima: izimayini, amafektri, amasimu, amachweba, kanye nezimoto. Amasu akamuva ahlose:
– Ijazi elimelana ne-UV ukuze lingaqhekeki elangeni,
– izinto ezimelana namafutha namakhemikhali zezimboni,
– isakhiwo esilwa nokudlidliza esinokugcwalisa okufanele kanye nejakethi,
– kanye nezinketho zokuvimba amanzi kwezinye izinhlobo zezintambo zangaphandle ukuvimbela ukungena kwamanzi.
Ngaphezu kwezinto zokwakha, ukuhlolwa nakho kuyaqina: ukuhlolwa kokugoba okuphindaphindiwe, ukuhlolwa kokudonsa, ukuhlolwa komjikelezo wokushisa, kanye nokuhlolwa kokufuthwa kukasawoti kokugqwala.
9) Indlela yokukhiqiza esuselwe ekhwalithini: ukuhlolwa kwe-inthanethi kanye nokulandelelwa
Amasu akamuva awagcini nje ngezinto zokwakha, kodwa futhi nezinqubo. Izimboni zezintambo zanamuhla zisebenzisa:
- ukuhlolwa kwesikhathi sangempela kobubanzi kanye nokukhubazeka kobuso,
- ukulinganiswa kwamapharamitha okumelana, amandla kanye nokudlulisa ngisho ngesikhathi sokukhiqiza,
– kanye nokulandeleka ngokumaka nokuqopha amaqoqo ezinto ezibonakalayo.
Lokhu kubalulekile kumadivayisi e-IoT akhiqizwa ngobuningi: ukuhlukahluka okuncane okukodwa kukhebula kungabangela izinkinga ezinkulu ezinkulungwaneni zamayunithi. Ngokulawulwa kwekhwalithi okuqhutshwa idatha, abakhiqizi bangagcina ukuvumelana phakathi kwamaqoqo.
I-Penutup
Amasu akamuva ekukhiqizweni kwekhebula lamadivayisi e-IoT abonisa ukuthi "ikhebula" liyingxenye yesu, hhayi nje into ewusizo. Kusukela kuma-conductor aguquguqukayo, amahle, ukufakelwa kwe-polymer okuthuthukisiwe, ukufakelwa okuncane, ukuvikela kwesimanje, ukulawulwa kwe-impedance, kuya kumakhebula ahlanganisiwe kanye nokuphela kokunemba—konke kuklanyelwe ukuhlangabezana nezidingo ze-IoT: kuncane, kuhlala isikhathi eside, kuphephile, futhi kuthembekile ekudluliseni amandla nedatha.
Uma ungathanda, ngingavumelanisa lesi sihloko nesimo esithile—isibonelo, i-IoT yezimboni (IIoT), amadivayisi ahlakaniphile ekhaya, agqokekayo, noma angaphandle—futhi ngengeze izibonelo zemininingwane ejwayelekile yekhebula esigabeni ngasinye.
