Kodi Kutumiza kwa Analogi mu Industrial Control ndi chiyani

Kutumiza kwa Analogi - Msana wa Kulumikizana Kwamafakitale

Kutumiza kwa analogi ndi njira yanthawi zonse yoperekera zidziwitso. Mosiyana ndi mnzake wa digito, imagwiritsa ntchito chizindikiro chopitilira kuyimira chidziwitso. M'machitidwe olamulira mafakitale, izi nthawi zambiri zimakhala zofunika kwambiri chifukwa chofuna kuyankha zenizeni komanso kusintha kwa data.

Kutuluka ndi kugwiritsa ntchito umisiri wowongolera mafakitale kunabweretsa kusintha kwachitatu kwa mafakitale, komwe sikunangowonjezera bwino ntchito komanso kupulumutsa ndalama zambiri zogwirira ntchito ndi zina. Kulamulira kwa mafakitale kumatanthauza kulamulira kwa mafakitale, komwe kumatanthauza kugwiritsa ntchito luso lamakono la makompyuta, teknoloji ya microelectronics, ndi njira zamagetsi kuti ntchito yopangira ndi kupanga fakitale ikhale yokhazikika, yogwira ntchito, yolondola, yowongoka komanso yowonekera. Magawo akulu akulu oyang'anira mafakitale ali m'malo akulu amagetsi, zakuthambo, kumanga madamu, kutenthetsa kutentha kwa mafakitale, ndi zoumba. Lili ndi ubwino wosasinthika. Monga: Kuyang'anira nthawi yeniyeni ya ma gridi amagetsi kumafunika kusonkhanitsa kuchuluka kwa ma data ndikuwongolera mokwanira. Kulowererapo kwaukadaulo wowongolera mafakitale kumathandizira kukonza chidziwitso chambiri.

Anatomy of Analogi Transmission

Kutumiza kwa analogi kumaphatikizapo kugwiritsa ntchito zinthu zingapo mosalekeza. Imasintha kuchuluka kwa thupi, monga kutentha kapena kupanikizika, kukhala ma voltage ofananira kapena ma siginecha apano. Kupitilira uku kumapereka kulondola, kupangitsa kufalitsa kwa analogi kukhala kupita kumafakitale komwe kulondola ndikofunikira.

Kuchuluka kwa analogi kumatanthawuza kuchuluka komwe kusinthako kumasintha mosalekeza mumtundu wina; ndiko kuti, ikhoza kutenga mtengo uliwonse (m'kati mwa mtengo) mkati mwamtundu wina (tanthauzo la domain).Kuchuluka kwa digito ndi kuchuluka kwapadera, osati kusinthasintha kosalekeza, ndipo kungatenge zinthu zingapo zosiyana, monga zosiyana siyana za digito. akhoza kungotenga zinthu ziwiri zokha.

Chifukwa Chiyani Sankhani Kutumiza kwa Analogi?

Kutumiza kwa analogi kungakhale njira yabwino yotumizira uthenga pazifukwa zingapo:

1. Mawonekedwe Achilengedwe:Zochitika zambiri zachilengedwe ndi analogi, kotero sizifuna kutembenuka kwa digito kusanachitike. Mwachitsanzo, ma audio ndi ma audio ndi ma analogi mwachilengedwe.
2. Zida Zosavuta:Makina otumizira ma analogi, monga ma wayilesi a FM/AM, nthawi zambiri amakhala osavuta komanso otsika mtengo kuposa ma digito. Izi ndizopindulitsa pokhazikitsa machitidwe omwe mtengo ndi kuphweka ndizofunikira kwambiri.
3. Kuchedwa Kwambiri:Makina a analogi nthawi zambiri amatha kukhala ndi latency yocheperako poyerekeza ndi digito, chifukwa safuna nthawi yokhotakhota ndikuyika chizindikiro.
4. Zolakwika Zosalala:Makina a analogi amatha kusalaza mitundu ina ya zolakwika m'njira yomwe makina a digito sangathe. Mwachitsanzo, pamakina a digito, cholakwika chimodzi chokha chingayambitse vuto lalikulu, koma pamakina a analogi, phokoso laling'ono limangoyambitsa kusokoneza pang'ono.
5. Kutumiza kwa Analogi Kumtunda Wautali:Mitundu ina ya ma siginecha a analogi, monga mafunde a wailesi, imatha kuyenda mitunda ikuluikulu ndipo siyitsekeredwa mosavuta ngati ma sigino a digito.

Komabe, m'pofunikanso kutchula zovuta za kufala kwa analogi. Mwachitsanzo, amatha kutayika bwino chifukwa cha phokoso, kuwonongeka, ndi kusokonezedwa, poyerekeza ndi ma siginecha a digito. Amakhalanso opanda zida zapamwamba zamakina a digito, monga kuzindikira zolakwika ndi kuthekera kokonza.

Chisankho pakati pa kutumiza kwa analogi ndi digito pamapeto pake zimatengera zofunikira za pulogalamuyo.

Kutentha, chinyezi, kuthamanga, kuthamanga, kuthamanga, ndi zina zotero zoyezedwa ndi sensa ndi zizindikiro zonse za analogi, pamene zotseguka komanso zotsekedwa nthawi zambiri zimakhala zizindikiro za digito (zomwe zimatchedwanso digito) . kapena 0-5V, 0-10V voteji. Ogwira ntchito yomanga amakonda kugwiritsa ntchito 4-20mA kufalitsa zizindikiro za analogi muzochitika zolamulira mafakitale, ndipo samagwiritsa ntchito 0-5V ndi 0-10V kawirikawiri.

Chifukwa chiyani?

Choyamba, nthawi zambiri kusokoneza ma electromagnetic m'mafakitole kapena malo omanga ndizovuta kwambiri, ndipo ma siginecha amagetsi amatha kusokonezedwa kuposa ma siginecha apano. Komanso, mtunda wotumizira wa chizindikiro chamakono ndi kutali kuposa mtunda wotumizira wa siginecha yamagetsi ndipo sichidzachititsa kuti chizindikirocho chichepetse.

Kachiwiri, Mphamvu yamagetsi ya zida zonse ndi 4-20mA (4-20mA imatanthauza kuti osachepera ndi 4mA, pakali pano ndi 20mA) .4mA yotsika kwambiri imagwiritsidwa ntchito chifukwa imatha kuzindikira malo otsekedwa. Kuchuluka kwa 20mA kumagwiritsidwa ntchito kuti akwaniritse zofunikira zomwe zingayambitse kuphulika, chifukwa mphamvu yomwe ingathe kuphulika chifukwa cha kutuluka kwa chizindikiro cha 20mA panopa sichikwanira kuyatsa malo ophulika a gasi woyaka. Ngati ipitilira 20mA, pali ngozi yophulika. Monga ngati kachipangizo ka gasi kawona mpweya woyaka ndi kuphulika monga carbon monoxide ndi hydrogen, chidwi chiyenera kuperekedwa ku chitetezo cha kuphulika.

Pomaliza, Potumiza chizindikiro, ganizirani kuti pali kukana pa waya. Ngati magetsi akugwiritsidwa ntchito, kutsika kwa magetsi kumapangidwira pawaya, ndipo chizindikiro pamapeto olandira chidzatulutsa cholakwika china, chomwe chidzatsogolera kuyesedwa kolakwika. Chifukwa chake, m'makina owongolera mafakitale, kutumiza ma siginecha apano nthawi zambiri kumagwiritsidwa ntchito ngati mtunda wautali ndi wochepera 100 metres, ndipo 0-5V voltage transmission transmission ingagwiritsidwe ntchito potumiza mtunda waufupi.

M'makina owongolera mafakitale, chopatsira ndi chofunikira kwambiri, ndipo njira yopatsira ma analogi ya transmitter ndiyofunikira kwambiri. Kutengera malo omwe mumagwiritsa ntchito, muyeso ndi zinthu zina, sankhani njira yofananira yotulutsa ma analogi kuti mukwaniritse muyeso wolondola ndikuthandizira ntchito yanu. Tili ndi porous metal element/zitsulo zosapanga dzimbiri. Sensa ya kutentha ndi chinyezi / kafukufuku, alamu ya gasi yosaphulika ndi ntchito. Pali zazikulu zambiri zomwe mungasankhe, ntchito yosinthira makonda imapezekanso.