Uyini umehluko phakathi kwemitha yezinga le-ultrasonic kanye nemitha yezinga le-radar?

Izinga lingelinye lamapharamitha abalulekile okuhlosiwe wokuqapha inqubo yezimboni.Esilinganisweni sezinga eliqhubekayo lamathangi ahlukahlukene, izisele, amachibi, njll., kunzima ukuba nezinsimbi ezingeni elingahlangabezana nazo zonke izimo zokusebenza ngenxa yezinhlobonhlobo zezimo zensimu.

Phakathi kwazo, ama-radar kanye ne-ultrasonic level gauges asetshenziswa kakhulu kumathuluzi okulinganisa okungewona othintana naye.Ngakho-ke, uyini umehluko phakathi kwemitha yezinga le-radar kanye nemitha yezinga le-ultrasonic?Uyini umgomo walezi zinhlobo ezimbili zokulinganisa?Yiziphi izinzuzo zemitha yezinga le-radar kanye nemitha yezinga le-ultrasonic?

Okokuqala, imitha yezinga le-ultrasonic

Ngokuvamile sibiza igagasi lomsindo nge-frequency engaphezu kuka-20kHz ultrasonic wave, i-ultrasonic wave iwuhlobo lwamaza omshini, okungukuthi, ukudlidliza komshini endaweni enwebekayo enqubweni yokusakaza, ibonakala ngokuvama okuphezulu, ubude beza obufushane, obuncane. i-diffraction phenomenon, kanye nokuqondisa okuhle, kungaba ukusakazwa komsebe nokuqondisa.

Ukuncishiswa kwe-Ultrasonic oketshezini nasezintweni eziqinile kuncane kakhulu, ngakho-ke amandla okungena aqinile, ikakhulukazi ekukhanyeni okuqinile opaque, i-ultrasonic ingangena amashumi amamitha ubude, ihlangabezane nokungcola noma i-interfaces izoba nokubonakaliswa okuphawulekayo, ukulinganisa izinga le-ultrasonic ukusetshenziswa kwayo. lesi sici.

Kubuchwepheshe bokubona be-ultrasonic, kungakhathaliseki ukuthi hlobo luni lwensimbi ye-ultrasonic, kuyadingeka ukuguqula amandla kagesi abe yi-ultrasonic emission, bese uthola emuva kumasignali kagesi, idivayisi yokuqedela lo msebenzi ibizwa ngokuthi i-ultrasonic transducer, eyaziwa nangokuthi i-probe.

Lapho isebenza, i-ultrasonic transducer ibekwa ngaphezu kwento elinganisiwe bese ikhipha igagasi le-ultrasonic liye phansi.Igagasi le-ultrasonic lidlula endaweni yomoya, libonakala emuva lapho lihlangana nobuso bento elinganisiwe, futhi lamukelwa i-transducer bese liguqulwa libe isignali kagesi.Ngemva kokuthola lesi siginali, ingxenye yokutholwa kwe-elekthronikhi iyishintsha ibe isignali yeleveli yokuboniswa nokuphumayo.

Okwesibili, imitha yeleveli ye-radar

Imodi yokusebenza yemitha yezinga le-radar iyafana naleyo yemitha yezinga le-ultrasonic, futhi imitha yezinga le-radar nayo isebenzisa i-transmitting – reflecting – ukuthola imodi yokusebenza.Umehluko ukuthi ukukalwa kwemitha yezinga le-radar ultrasonic ngokuyinhloko kuncike ku-transducer ye-ultrasonic, kuyilapho imitha yezinga le-radar incike ekhanda le-high-frequency kanye ne-antenna.

Amamitha eleveli ye-Ultrasonic asebenzisa amaza anomshini, kuyilapho amamitha eleveli ye-radar esebenzisa amaza kagesi aphezulu kakhulu (amagagasi kagesi ka-G kuya kumashumi ambalwa e-G Hertz).Amagagasi kagesi ahamba ngesivinini sokukhanya, futhi isikhathi sokuhamba singaguqulwa sibe isignali yezinga yizingxenye ze-elekthronikhi.

Enye imitha yezinga le-radar evamile iyimitha yeleveli ye-radar wave eqondiswayo.

Imitha yeleveli ye-radar yamagagasi eqondiswayo iyimitha yeleveli ye-radar esekelwe kumgomo wesizinda sesikhathi se-reflectometry (TDR).I-electromagnetic pulse yemitha yeleveli ye-radar isakazeka ngekhebula lensimbi noma i-probe ngesivinini sokukhanya.Uma ihlangana nobuso bendawo elinganisiwe, ingxenye yokushaya kwemitha yeleveli ye-radar iboniswa ukuze yakhe i-echo futhi ibuyela kudivayisi yokuvula ishayela ngendlela efanayo.Ibanga eliphakathi kwesidlulisi nendawo emaphakathi elinganisiwe lilingana nesikhathi sokusakaza se-pulse lapho kubalwa khona ubude bezinga loketshezi.

Okwesithathu, izinzuzo kanye nokubi kwe-radar kanye nemitha yezinga le-ultrasonic

1. Ukunemba kwe-Ultrasonic akukuhle njenge-radar;

2. Ngenxa yobudlelwano phakathi kobukhulu nosayizi we-antenna, imitha yeleveli ye-radar enefrikhwensi ephezulu incane futhi kulula ukuyifaka;

3. Ngenxa yokuthi ifrikhwensi ye-radar iphakeme, ubude begagasi bufushane, futhi kukhona ukuboniswa okungcono ezindaweni eziqinile ezitshekile;

4. Indawo eyimpumputhe yokulinganisa i-radar incane kune-ultrasonic;

5. Ngenxa yemvamisa ephezulu ye-radar, i-Angle ye-radar ye-radar incane, amandla agxilile, futhi ikhono le-echo liyathuthukiswa ngenkathi kulungele ukugwema ukuphazamiseka;

6. Uma kuqhathaniswa namamitha ezinga le-ultrasonic kusetshenziswa amagagasi emishini, i-radar ngokuyisisekelo ayithinteki nge-vacuum, umhwamuko wamanzi emoyeni, uthuli (ngaphandle kwegraphite, i-ferroalloy nolunye uthuli oluphezulu lwe-dielectric), izinga lokushisa noshintsho lokucindezela;