Hanyar auna siginar firikwensin saurin Wheel ABS Amfani da Oscilloscope na Mota

Na'urar rigakafin kulle birki (antilockbrakesystem) na motar ana kiranta da ABS gaba ɗaya. Ayyukan shine sarrafa ƙarfin tsarin birki na tsarin birki lokacin da motar ke taka birki, ta yadda ƙafafun ba su kulle ta ƙafafun kuma suna cikin yanayi na jujjuyawa da zamewa (yawan motsi ya kai kusan 20%), don tabbatar da mannewar ƙafafun da ƙasa. Ƙarfin kulli yana a matsakaicin ƙimar.
Ayyukan firikwensin saurin dabaran a cikin ABS shine don auna daidai rabon motsin motar. Na'urar firikwensin saurin dabaran yana gano siginar mitar (siginar rabon watsawa) na kowane jujjuyawar dabaran, sannan ya aika wannan siginar zuwa kwamfutar lantarki ta ABS. Lokacin da aka ba da garantin saurin zuwa ƙimar ƙima, kushin birki na gaggawa ya birki tsarin kuma tsarin ABS ya fara aiki. Lokacin da kwamfutar ABS ke sarrafa dabaran don kwancewa na ɗan lokaci, firikwensin saurin ƙafafun yana aika siginar tazara wanda ke gano jujjuyawar taya daga birki zuwa juyawa zuwa kwamfutar lantarki ta ABS, ta yadda ABS ke sarrafa kushin birki don cimma mafi kyawun nisan birki. Faɗin kewayon na'urori masu saurin motsi sun haɗa da firikwensin saurin dabaran magnetoelectric da na'urori masu saurin motsi irin na Hall.
An ƙera firikwensin saurin dabaran magnetoelectric ta amfani da tsarin tasirin maganadisu na halin yanzu. Yana da sauƙi a cikin tsari, ƙananan farashi, ba ya jin tsoron laka, kuma baya buƙatar kayan aikin rarraba wutar lantarki, kuma ana amfani dashi sosai a cikin tsarin birki na ABS. Amma kuma akwai wasu nakasu, irin su halayen mitar lokaci-lokaci ba su da yawa, lokacin da saurin ya yi yawa, halayen firikwensin lokaci-lokaci na firikwensin ba zai iya kiyayewa ba, wanda zai iya haifar da siginar karya cikin sauƙi. Hakanan akwai ƙarancin ikon yin tsayayya da tsangwama na lantarki. Siffar igiyar igiyar ruwa da aka auna daidai da oscilloscope na analog yana cikin sifar igiyar igiyar aikin sine, kuma mafi girman rabon watsa dabaran, girman siginar fitarwa yana aiki daidaitaccen ƙimar ƙarfin ƙarfin lantarki.
Ana yin firikwensin saurin dabaran nau'in Hall ta hanyar amfani da ainihin manufar tasirin Hall. Siginar fitarwarta ba ta da sauƙi lalacewa ta saurin daidaitaccen ƙarfin lantarki da ƙimar ƙarfi. Yana da babban halayen mitar lokaci da ƙarfin tsoma baki mai ƙarfi na lantarki, amma dole ne ya sami kayan rarraba wutar lantarki. Guys, don haka firikwensin yana yin ma'auni daidai misali:
Da farko, haɗa na'urar BNC zuwa kebul na kai na ayaba zuwa wurin aminci na oscilloscope na analog. Jajayen kai yana haɗa da allura a matsayin ingantaccen matakin, kuma an haɗa layin siginar firikwensin. Baƙar fata na kuraje za a iya haɗa shi da shirin alligator ko allura azaman tsarin ƙasa mara kyau.
Bude kayan aikin fita aminci na oscilloscope na analog, saita rabon asarar aminci zuwa 1X, daidaita kayan motar a tsaye zuwa 1V/div, sannan shigar da tushen lokacin zuwa kusan 10ms, sannan zaku iya daidaita shi gwargwadon cikakkun bayanai.
Tun da na'urar firikwensin saurin dabaran nau'in Hall yana da kayan aikin rarraba wutar lantarki na kewayawa, ya kamata a sami wutar lantarki mai sarrafa DC na kusan 11-12V don lura da yanayin motsi a wannan lokacin.
Ɗaga abin hawa tare da jack, kunna dabaran, kuma auna daidai yanayin fitarwa na siginar firikwensin tare da oscilloscope na analog na mota.
Hall sakamako na'urori masu auna firikwensin sun ƙunshi magneti na dindindin ko da'ira mai rufewa tare da filin lantarki kusan a kashe gaba ɗaya, injin tile fan impeller yana jujjuya rata tsakanin maganadisu da filin lantarki, kuma ba a cutar da shi lokacin da akwatin tip akan fan impeller ya ba da damar filin maganadisu Lokacin da aka watsa ƙasa zuwa firikwensin sakamako na Hall, filin maganadisu yana katse (saboda matsakaicin abin da ke ba da damar firikwensin firikwensin shine filin firikwensin). Tushen filin maganadisu da jimillar filin maganadisu na iska lokacin da aka buɗe akwatin gaggawa da rufe, yana haifar da tasirin Hall. Effect Sensor yana haɗawa kuma yana kashe shi kamar wutar lantarki, wanda shine dalilin da ya sa wasu kamfanonin mota ke magana akan firikwensin tasirin hall da wasu na'urori masu kama da wutar lantarki a zauren, wannan na'urar a zahiri babban ƙarfin wuta ne Switchgear. Don haka, siginar siginar firikwensin tasirin Hall shine ainihin bugun bugun jini daya bayan daya, wato, siginar igiyar ruwa.
Matsakaicin saurin watsa dabaran, saurin mitar siginar siginar yana zama, amma AC halin yanzu na sadarwarsa ya kasance iri ɗaya, duk daga 0V zuwa 1V. Rage saurin jujjuyawar dabaran, za ku ga cewa mitar siginar kuma tana raguwa.
Idan firikwensin ABS na nuni na dijital yana da daidaitattun ƙarfin lantarki na 0 volt, yakamata a fara bincika don sanin ko yana da wutar lantarki mai sauyawa. Sannan ana tantance ko mitar siginar na'urar firikwensin yana bin tsarin dabaran, in ba haka ba yana nuni da wata matsala ta gama gari.