Muburyo bwo kwiga bwibishushanyo mbonera bya PCB byihuse, kunyuramo ni igitekerezo cyingenzi kigomba gutozwa.Ninzira nyamukuru yo gukwirakwiza interineti ya electronique.Imirongo yerekana ibimenyetso, imirongo igenzura, na I \ O ibyambu biranyuze.Crosstalk irashobora gutera imikorere idasanzwe yumuzunguruko cyangwa ibice.
Crosstalk
Yerekeza ku majwi adakenewe y’urusaku rwivanga rwumurongo uherekeza bitewe na electromagnetic guhuza iyo ikimenyetso gikwirakwiza kumurongo.Uku kwivanga guterwa no guhuzagurika hamwe nubushobozi hagati yumurongo wohereza.Ibipimo byurwego rwa PCB, umurongo wumurongo wibimenyetso, ibiranga amashanyarazi birangirana no gutwara impera, nuburyo bwo guhagarika umurongo byose bigira ingaruka runaka kumihanda.
Ingamba zingenzi zo gutsinda inzira nyabagendwa ni:
Ongera intera ya wiring parallel kandi ukurikize itegeko rya 3W;
Shyiramo insinga yo kwigunga hagati yinsinga zibangikanye;
Mugabanye intera iri hagati yicyuma nindege yubutaka.
Kugirango ugabanye umuhanda hagati yumurongo, intera yumurongo igomba kuba nini bihagije.Iyo intera hagati yumurongo itari munsi yinshuro 3 z'ubugari bwumurongo, 70% yumurima wamashanyarazi urashobora kubikwa nta kwivanga, kwitwa itegeko rya 3W.Niba ushaka kugera kuri 98% yumuriro wamashanyarazi utabangamiye undi, urashobora gukoresha umwanya wa 10W.
Icyitonderwa: Mubishushanyo mbonera bya PCB, itegeko rya 3W ntirishobora kuzuza byuzuye ibisabwa kugirango wirinde kunyura.
Inzira zo kwirinda kunyura muri PCB
Kugirango wirinde kunyura muri PCB, injeniyeri zirashobora gusuzuma uhereye kumiterere ya PCB n'imiterere, nka:
1. Shyira mubikorwa ibikoresho bya logique ukurikije imikorere kandi ukomeze imiterere ya bisi igenzurwa cyane.
2. Kugabanya intera igaragara hagati yibigize.
3. Imirongo yerekana ibimenyetso byihuse hamwe nibigize (nka oscillator ya kristu) igomba kuba kure yimikoranire ya I / () hamwe nibindi bice bishobora guhura namakuru no guhuza.
4. Tanga iherezo ryukuri kumurongo wihuta.
5. Irinde inzira ndende zisa nizindi kandi zitange intera ihagije hagati yinzira kugirango ugabanye guhuza inductive.
6. Amashanyarazi kumurongo yegeranye (microstrip cyangwa stripline) agomba kuba perpendicular kuri mugenziwe kugirango wirinde guhuza ubushobozi hagati yabyo.
7. Mugabanye intera iri hagati yikimenyetso nindege yubutaka.
8. Gutandukanya no gutandukanya inkomoko y’urusaku rwinshi (isaha, I / O, guhuza umuvuduko mwinshi), kandi ibimenyetso bitandukanye bikwirakwizwa mubice bitandukanye.
9. Ongera intera iri hagati yumurongo wibimenyetso bishoboka, bishobora kugabanya neza inzira nyabagendwa.
10. Mugabanye inductance ya sisitemu, irinde gukoresha imizigo ihanitse cyane hamwe nuburemere buke cyane bwumuzunguruko, hanyuma ugerageze guhagarika imizigo yimitwaro ya analogi hagati ya loQ na lokQ.Kuberako umutwaro uremereye uzamura ubushobozi bwambukiranya imipaka, mugihe ukoresheje umutwaro uremereye cyane, bitewe na voltage ikora cyane, umuhanda wa capacitif uziyongera, kandi mugihe ukoresheje umutwaro muto cyane, bitewe numuyoboro munini ukora, Crosstalk izakora kwiyongera.
11. Tegura ibimenyetso byihuse byihuta kumurongo wimbere wa PCB.
12. Koresha tekinoroji ihuye na tekinoroji kugirango umenye neza ibimenyetso bya BT kandi wirinde kurenza urugero.
13. Menya ko kubimenyetso bifite impande zizamuka byihuse (tr≤3ns), kora anti-crossstalk gutunganya nko gupfunyika ubutaka, hanyuma utegure imirongo imwe nimwe yerekana ibimenyetso bibangamiwe na EFT1B cyangwa ESD kandi bitayungurujwe kuruhande rwa PCB. .
14. Koresha indege y'ubutaka bishoboka.Umurongo wibimenyetso ukoresha indege yubutaka uzabona 15-20dB attenuation ugereranije numurongo wibimenyetso udakoresha indege yubutaka.
15. Ibimenyetso byihuta cyane nibimenyetso byoroshye bitunganyirizwa hamwe nubutaka, kandi gukoresha tekinoroji yubutaka mubice bibiri bizagera kuri 10-15dB.
16. Koresha insinga zingana, insinga zikingiwe cyangwa insinga za coaxial.
17. Shungura imirongo yerekana ibimenyetso byo gutoteza n'imirongo yoroheje.
18 imirongo yerekana ibimenyetso (murwego rurerure rurerure), Izi ngamba zirashobora kugabanya neza inzira nyabagendwa.