Sivame ukuqhathanisa i-crystal oscillator enhliziyweni yesifunda sedijithali, ngoba wonke umsebenzi wesifunda sedijithali uhlukaniswe kusuka kusiginali yewashi, futhi i-crystal oscillator ilawula ngqo lonke uhlelo. Uma i-crystal oscillator engasebenzi, lonke uhlelo luzokhubazeka, ngakho-ke i-crystal oscillator iyimfuneko yesifunda sedijithali ukuze iqale ukusebenza.
I-Crystal Oscillator, njengoba sivame ukusho, yi-quartz crystal oscillator kanye nomthengisi we-quartz crystal. Zombili zenziwe ngomphumela we-piezoelectric wamakristalu e-quartz. Ukusebenzisa insimu kagesi ku-elektrode amabili e-quartz crystal kubangela ukuguqulwa kwemishini kwekristalu, kanti ukusebenzisa ingcindezi yemishini yezinhlangothi zombili kudala ukuthi insimu kagesi yenzeke kukristalu. Futhi zombili lezi zimo ziguqulwa. Usebenzisa le mpahla, ukuguquguquka kwama-voltages asetshenziswa kuzo zombili izinhlangothi zekristalu futhi i-wafer ye-buvrates ngomshini, kanye nokukhiqiza izindlela zokushintsha zikagesi. Lolu hlobo lwe-vibrate ne-Electric luncane ngokuvamile luncane, kepha ngokuvama okuthe xaxa, i-amplitude izokwanda kakhulu, okuyi-piezoelectric resonance, efana ne-LC Loop Resonance esivame ukubona.
Njengenhliziyo yesifunda sedijithali, i-Crystal Oscillator idlala kanjani indima emikhiqizweni ehlakaniphile? Ikhaya elihlakaniphile elinjengesimo somoya, amakhethini, ukuphepha, ukuqapha kanye neminye imikhiqizo, yonke idinga umthethonqubo osebenza nge-Bluetooth, ngakho-ke imodyuli yokulawulwa kwefoni, ngakho-ke khetha uhlelo oluyinhloko, ngakho-ke khetha uhlelo lokusebenzisa i-Crystal Oscillator. Inquma impumelelo noma ukwehluleka kwemibuthano yedijithali.
Ngenxa yokubaluleka kweCrystal Oscillator kwisifunda sedijithali, kudingeka siqaphele lapho sisebenzisa futhi siklama:
1. Kukhona amakristalu e-quartz ku-crystal oscillator, okulula ukudala ukuqhekeka kwe-quartz crystal kanye nomonakalo uma kuthonywa noma kuphonswe ngaphandle, bese kufakwa i-oscillator yekristalu. Ngakho-ke, ukufakwa okuthembekile kwe-crystal oscillator kufanele kubhekwe ekwakhiweni komjikelezo, futhi isikhundla sayo akufanele sibe seduze nasemaphethelweni wepuleti kanye negobolondo lemishini ngangokunokwenzeka.
2. Naka amazinga okushisa we-welding lapho welding ngesandla noma ngomshini. I-Crystal vibration iyazwela izinga lokushisa, izinga lokushisa le-welding akufanele liphezulu kakhulu, futhi isikhathi sokushisa kufanele sibe mfushane ngangokunokwenzeka.
Ukuhlelwa kwe-crystal oscillator okunengqondo kungacindezela ukuphazamiseka kwemisebe yohlelo.
1. Incazelo Yenkinga
Umkhiqizo yikhamera yensimu, equkethe izingxenye ezinhlanu ngaphakathi: Ibhodi Yokulawula Okuyisisekelo, I-Sensor Board, Ikhamera, Ikhamera yeKhamera, I-SD Memory Card nebhethri. Igobolondo ligobolondo leplastiki, futhi ibhodi elincane linezindawo ezimbili kuphela: I-DC5V yangaphandle yamandla esibonakalayo nesibonisi se-USB sokuhanjiswa kwedatha. Ngemuva kokuhlolwa kwemisebe, kutholakala ukuthi kunenkinga yemisebe yemisebe yemisebe ye-33mhz Harmonic.
Idatha yokuhlola yasekuqaleni imi ngale ndlela elandelayo:
2. Hlaziya inkinga
Lo mkhiqizo we-Shell Shell Sakhiwowoti i-Shell yePulasitiki, impahla engavikelekile, lonke uvivinyo oluyintambo yamandla kanye nentambo ye-USB ukuphuma kwegobolondo, ingabe ikhebula le-Impereff liyamiswa ngentambo yamandla ne-USB Cable? Ngakho-ke, lezi zinyathelo ezilandelayo zithathwa ukuze kuhlolwe:
(1) Faka indandatho kazibuthe kuphela kwintambo yamandla, imiphumela yokuhlola: Ukuthuthuka akubonakali;
(2) Faka kuphela indandatho kazibuthe kukhebula le-USB, imiphumela yokuhlola: Ukuthuthuka akubonakali;
(3) Faka indandatho kazibuthe kwikhebula le-USB kanye nentambo yamandla, imiphumela yokuhlola: Ukuthuthuka kusobala, imvamisa ephelele yokuphazanyiswa kwehle.
Kungabonakala kulokhu okungenhla ukuthi amaphuzu avalemele ama-interfectofer avela ezindaweni ezimbili, okungeyona inkinga ye-interface yamandla noma isikhombimsebenzisi se-USB, kepha amaphuzu wangaphakathi aphazamisayo ahambisana nezindawo ezimbili. Ukuvikela okubonakalayo okukodwa kuphela okungakwazi ukuxazulula inkinga.
Ngokulinganiswa kwensimu eduzane, kutholakala ukuthi i-crystal oscillator e-core control board yakha imisebe yendawo eqinile yakha imisebe yendawo eqinile, eyenza amakhebuli azungezile kanye ne-GND ehlanganiswe nekhebula le-USB nentambo yamandla. Izinkinga zeCrystal Oscillator zibangelwa yizinkinga ezimbili ezilandelayo:
(1) Ukudlidliza kwekristalu kusondele kakhulu emaphethelweni epuleti, okulula ukuholela ku-Crystal Vibration Radiation Nokho.
(2) Kunomugqa wesiginali ngaphansi kwe-crystal oscillator, okulula ukuholela kumsindo we-harmonic welayini ye-Crystal Oscillator.
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3, ikhambi
Ngokusho kokuhlaziywa, iziphikiso ezilandelayo ziyatholakala:
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(2) khumbula ukungafaki umhlaba endaweni yokubekwa kwe-crystal kanye nendawo yokuqagela ngezansi;
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(4) Ikristalu ibekwa eduze kwe-chip, futhi umugqa phakathi kwalokhu okubili kufushane futhi uqonde ngangokunokwenzeka.
4. Isiphetho
Kulezi zinsuku eziningi ze-Crystal Osstal Oscal Oscillator Clock Frequency ziphezulu, amandla aphazamisayo anamandla; Ukuphazanyiswa kwama-harmonics akudluliselwa kuphela kusuka emigqeni yokufaka kanye nokukhipha, kepha futhi kukhanye emkhathini. Uma ukwakheka akunangqondo, kulula ukudala inkinga eqinile yemisebe yemisebe, futhi kunzima ukuyixazulula ngezinye izindlela. Ngakho-ke, kubaluleke kakhulu ekuhlelweni kweCrystal Oscillator kanye ne-CLK Signal Line ku-PCB Board Layout.
Qaphela ku-PCB Design of Crystal Oscillator
(1) I-capacitor ehlanganayo kufanele isondelene ne-PIN enikezela nge-PIN ye-Crystal Oscillator ngangokunokwenzeka. Isikhundla kufanele sibekwe ngokuhleleka: Ngokuya nge-Power Supply Inflow Direction, i-capacitor enekhono elincane kakhulu kufanele ibekwe ngokulandelana kusuka kokukhulu kunabo bonke kuya kwabakhulu.
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(3) Musa ukuthunga ngaphansi kwe-crystal oscillator ukuze uqinisekise ukuthi phansi kumbozwe ngokuphelele. Ngasikhathi sinye, ungangeni ngaphakathi kwama-300mil we-crystal oscillator, ukuze uvikele i-crystal oscillator ekuphazanyisweni ngokusebenza kwamanye ama-wiring, amadivayisi nezingqimba.
(4) Umugqa wesiginali yewashi kufanele ube mfushane ngangokunokwenzeka, umugqa kufanele ube banzi, futhi ibhalansi kufanele itholakale ngobude be-wiring futhi kude nomthombo wokushisa.
(5) I-crystal oscillator akufanele ibekwe emaphethelweni ebhodi le-PCB, ikakhulukazi ekwakhiweni kwekhadi lebhodi.
