Momwe mungathetsere kukhazikika kwa kufalikira kwa chizindikiro cha chiwonetsero cha LED?Mawonekedwe a LED akuthamanga mwadzidzidzi amawoneka osokonekera chifukwa cha zovuta zamasinthidwe.Ngati ili pamwambo wofunika wotsegulira, kutayika kwake sikungakonzedwenso.Momwe mungadziwire kudalirika ndi kukhazikika kwa kufalitsa ma siginecha kwakhala vuto lalikulu kuti mainjiniya athetse.Mu njira yotumizira, chizindikirocho chidzafooka pamene mtunda ukuwonjezeka, kotero kusankha njira yopatsirana ndiyofunika kwambiri.

1. Kuchepetsedwa kwa chizindikiro chowonetsera LED: Sikovuta kumvetsa kuti ziribe kanthu kuti ndi njira yotani yomwe imagwiritsidwa ntchito pofalitsa, chizindikirocho chidzachepetsedwa panthawi yotumizira.Titha kuwona chingwe chotumizira cha RS-485 ngati gawo lofananira lopangidwa ndi ma resistor angapo, ma inductors ndi ma capacitor.Kukaniza kwa waya kumakhala ndi zotsatira zochepa pa chizindikiro ndipo kunganyalanyazidwe.Kugawidwa kwa capacitance C kwa chingwe kumayambitsidwa makamaka ndi mawaya awiri ofanana a awiri opotoka.Kutayika kwa chizindikirocho makamaka chifukwa cha fyuluta yotsika ya LC yopangidwa ndi mphamvu yogawidwa ndikugawidwa kwa chingwe.Kuchulukira kwa njira yolumikizirana, m'pamenenso kuchepetsedwa kwa siginecha.Choncho, pamene kuchuluka kwa deta yopatsirana sikuli kwakukulu kwambiri ndipo kufunikira kwa kufalikira sikuli kokwera kwambiri, nthawi zambiri timasankha baud mlingo wa 9 600 bps.

2. Kuwonetsera kwa chizindikiro mu mzere wolankhulana wa chinsalu chowonetsera LED: Kuwonjezera pa kuchepetsedwa kwa chizindikiro, chinthu china chomwe chimakhudza kufalikira kwa chizindikiro ndicho kuwonetsera chizindikiro.Kusagwirizana kwa impedance ndi kuyimitsidwa kwa impedance ndizifukwa ziwiri zazikulu zomwe zimayambitsa kuwonekera kwa basi.Chifukwa 1: Kusagwirizana kwa Impedans.Kusagwirizana kwa impedance makamaka ndiko kusagwirizana pakati pa chip 485 ndi chingwe cholumikizirana.Chifukwa cha kusinkhasinkha ndikuti pamene chingwe choyankhulirana sichigwira ntchito, chizindikiro cha mzere wonse wolankhulana chimasokonekera.Chizindikiro chowonetsera ichi chikayambitsa wofanizira pakulowetsa kwa chip 485, chizindikiro cholakwika chidzachitika.Yankho lathu lonse ndikuwonjezera zotsutsa zotsutsana ndi mizere ya A ndi B ya basi, ndikuwakokera m'mwamba ndi pansi mosiyana, kuti pasakhale zizindikiro zosokoneza.Chifukwa chachiwiri ndi chakuti impedance imasiya, yomwe ili yofanana ndi kuwunikira komwe kumachitika chifukwa cha kuwala komwe kumalowa mu sing'anga ina kuchokera ku sing'anga imodzi.Pamapeto pa chingwe chotumizira, chizindikirocho chimakumana ndi chingwe chaching'ono kapena chopanda chingwe, ndipo chizindikirocho chidzayambitsa kuwonetsera pamalo ano.Njira yomwe imagwiritsidwa ntchito kwambiri kuti athetse kusinkhasinkha uku ndikulumikiza chopinga chomaliza cha kukula kofanana ndi kutsekereza kwa chingwe kumapeto kwa chingwe kuti kutsekereza chingwe kupitirire.Popeza kuti kutumiza kwa siginecha pa chingwe ndi njira ziwiri, choletsa chopinga cha kukula kofanana chiyenera kulumikizidwa kumapeto ena a chingwe cholumikizirana.

3. Chikoka cha mphamvu yogawidwa ya chiwonetsero cha LED pa ntchito yotumizira basi: Chingwe chotumizira nthawi zambiri chimakhala chopotoka, ndipo mphamvu imapezeka pakati pa mawaya awiri ofanana a awiri opotoka.Palinso capacitance yaing'ono yofanana pakati pa chingwe ndi pansi.Popeza siginecha yomwe imaperekedwa m'basi imakhala ndi "1" ndi "0" bits, ikakumana ndi ma byte apadera monga 0 × 01, mulingo wa "0" umapangitsa mphamvu yogawidwayo kukumana ndi nthawi yolipira, ndi liti. mphamvu ndi Pamene mlingo "1" umabwera mwadzidzidzi, ndalama zomwe zimasonkhanitsidwa ndi capacitor sizingathe kutulutsidwa mu nthawi yochepa, zomwe zimayambitsa kusinthika kwa chizindikiro, ndiyeno zimakhudza khalidwe la kufalitsa deta lonse.

4. Njira yosavuta komanso yodalirika yolankhulirana pazithunzi zowonetsera LED: Pamene mtunda wolankhulana uli waufupi komanso malo ogwiritsira ntchito sakusokoneza, nthawi zina timangofunika kulankhulana kosavuta kwa njira imodzi kuti timalize ntchito zonse za polojekitiyi, koma zambiri malo ogwiritsira ntchito sizili choncho.chilakolako.Kumayambiriro kwa polojekitiyi, ikufotokozedwa mwachidule ngati mawaya ndi akatswiri (monga kusunga mtunda wina pakati pa mzere wa chizindikiro ndi chingwe chamagetsi), kusadziwikiratu kwa mtunda wolankhulana, kuchuluka kwa chisokonezo kuzungulira mzere wolankhulana, kaya chingwe choyankhulirana chimagwiritsa ntchito waya wopindika-wotchinga, ndi zina zotero. Zinthu zonsezi ndi za dongosolo.Kulankhulana wamba kumakhudza kwambiri.Chifukwa chake, ndikofunikira kwambiri kupanga njira yolumikizirana yokwanira.