Yiziphi izinzwa ze-microwave?

Izinzwa ze-Microwave, ezaziwa nangokuthi izinzwa ze-radar, i-rf, noma i-doppler, zilandelela okuqondiwe komuntu ukuhamba, ukunyakaza, noma ukukhasa endaweni engaphandle.Izinzwa ze-Microwave zikhiqiza inkambu ye-electromagnetic (rf) phakathi kwe-transmitter nomamukeli, okuholela endaweni engabonakali yevolumu yevolumu.Izinzwa ze-Microwave zifakwe kuyo yonke imigwaqo engase ibe khona engagunyaziwe.Ithumela isignali ye-microwave enemvamisa ephezulu, evezwa yinoma iyiphi imoto engafuneki edlula endaweni etholakala kuyo.

Ayini ama-microwave?

Imisebe ye-electromagnetic ihlanganisa ama-microwave.Amagagasi kagesi akhiwe yizinkambu zikagesi nezikazibuthe ezihambayo ezihamba ngesivinini sokukhanya, esingu-299 792 458 m/s.Ahlukaniswa ngezinto ezimbalwa ezibalulekile, okuhlanganisa imvamisa noma ubude begagasi, ukuqina noma amandla, kanye ne-polarization.

Izinhlobo zezinzwa ze-microwave

· Ama-altimeters: lawa abala ubude bendawo ngokukala isikhathi esithatha i-microwave ukuze ibonakale isuka phezulu futhi iyihumushele ebangeni elisuswayo ukusuka endaweni ephakemeyo.

· I-synthetic aperture radar (SAR): ama-radar anjalo ahlinzeka ngesithombe sokucaca okuphezulu kumzila wethrekhi noma indlela ye-azimuth ngokusebenzisa ukunyakaza kweplathifomu ukuze akhe uthi olude.Ubukhulu bamandla abonisiwe avela phezulu, aziwa ngokuthi 'i-backscatter,' kuphikseli ngayinye buhlobene nakho kokubili ukwakheka kwendawo kanye nobulukhuni bendawo esikalini se-wavelength nge-dielectric constant.

· I-Polarimetric SAR: amasistimu e-polarimetric SAR akhiqiza izithombe ezisuka ku-polarizations ehlukene.Idatha ye-Polarimetric isiza ekuhlukaniseni imininingwane yokuma kwengaphezulu kusuka kumiphumela yesakhiwo esingaphezulu ku-backscatter.Ukuzwela ukuma kanye nolwazi oluthuthukisiwe lokuhlakazwa kwendawo kuvumela ukucaciswa kwendawo okunembe kakhudlwana kanye nokulinganisa okunembe kakhudlwana kwepharamitha yobuningi.

· I-Stereo SAR: istiriyo sinquma imininingwane ye-topographic ngokusebenzisa izithombe ze-SAR ezitholwe ezindaweni ezihlukahlukene.Izinto ekuphakameni okuhlukahlukene kwezithombe ze-SAR, njengamapheya e-optical image stereo, zidala i-parallax noma ukuhlanekezela kwesithombe okulingana nobude obungaphezu kwendawo eyireferensi.

· I-Interferometric SAR: i-interferometric sars, okuhlanganisa nama-stereo sars, sebenzisa idatha eqoqwe ezindaweni ezihlukahlukene ukuze ubale imininingwane ye-topographic noma indawo engaphezulu.Njengoba i-parallax yezinhlelo ze-interferometric ngokuvamile incane kakhulu kunephikseli, ulwazi lwe-topographic lususelwa kunzwa yesigaba, evumela izilinganiso ze-parallax ezinembe ngendlela ehlukile, noma umehluko webanga.

Zisebenza kanjani?

Izithungatha ezihambayo zithumela amasignali e-microwave kanye nesikhathi ukuthi kuthatha isikhathi esingakanani ukuthi isignali idluliselwe emuva kunzwa;lokhu kwaziwa njengesikhathi se-echo.Isikhathi se-echo sisetshenziselwa ukukala amabanga azo zonke izinto ezimile endaweni yokuthola ukuze kwakhiwe isisekelo okufanele sisebenze kuso.Ngeshwa, umuntu oza endaweni yomtshina uphazamisa i-microwave beam, akhulise isikhathi se-echo futhi avule izibani - lokhu kungabangela izinzwa ukuthi zizwele kakhulu.

Zingasetshenziswa kanjani ekukhanyeni?

Izinzwa zokunyakaza kwe-Microwave zisebenza ngokuhlukile kunezinzwa ze-infrared passive, ezisetshenziswa kakhulu.Inzwa ye-mw ikhipha ama-microwave futhi ihlaziye i-echo ebuyela ohlelweni.Uma isenzo sishintsha iphethini ye-echo, inzwa ingase iphendule ngokukhanyisa isibani.

Izinzwa ze-Microwave zinekhono elithembekile lokulandelela umsebenzi ngokusebenzisa izinhlobonhlobo zamazinga okushisa.Kodwa-ke, ukuzwela kokutholwa kwezinzwa ze-pir kungahluka kuye ngesimo sezulu.Ngaphezu kwalokho, izinzwa ze-infrared zingenwa kalula uthuli nentuthu futhi zibe nempilo yonke encishisiwe.

Izinzwa ze-Microwave zingakwazi ukuzwa ukunyakaza ngezinto ezingezona ezensimbi njengengilazi ngisho nezindonga ezincane.Njengoba inzwa ingakhwezwa ukuze ingabonakali noma ngaphakathi kwe-luminaire, inezinye izinketho zokuyifaka.

Iwonga kanjani amandla?

Ngokungeziwe kulawulo olujwayelekile lokuvula/ukuvala kwe-luminaire, ezinye izinzwa zinebanga elibanzi lemisebenzi.Ungaphinda ukhethe i-2-step noma i-3-step dimming.Ungakha amanethiwekhi abanzi wezibani ngokusebenzisa ukuxhumana kwe-rf phakathi kwezinzwa ukuze ugade izibani eziningana ngesikhathi esisodwa.Amanye amamodeli anezinzwa zemini ezakhelwe ngaphakathi, ezikuvumela ukuthi usebenzise ukukhanya kwasemini ngokuphelele kuyilapho ugcina amazinga okukhanya anele uma kuhwalala nasekuseni.Lokhu kwaziwa ngokuthi ukuvuna emini.

Izinzuzo ezinkulu zenziwa emakamelweni nasezindaweni lapho ukukhanya kwemini kunomthelela omkhulu ezimeni zokukhanyisa, njengamafasitela amakhulu.Ngokungeziwe ekongeni amandla, ukusebenzisa lezi zinzwa kwandisa impilo yezibani zakho kuyilapho zingakhanyi kuze kube yilapho ukukhanya kudingekile ngokukhethekile.

Amathuba amahle kakhulu alezi zinzwa

Ukukhanyisa okulungile kwenza ukufunda nokubhala kujabulise kakhudlwana, kukhuphule ukuvikeleka, futhi kungaba yinzuzo ngisho nasenhlalakahleni yomuntu.Ngakho-ke, lezi zinzwa zingasetshenziselwa kuphi ukuze uthole okuningi kuzo?Noma yiziphi izinzwa ziyakwazi ukuzimela futhi zingaxhunyaniswa nenjini eholayo.Umshayeli usevele esetshenziswa kwamanye amadivaysi enzwa.Lokhu kukunikeza ukuguquguquka okwengeziwe uma kuziwa ekucushweni kokukhanyisa.

Izinzwa ze-Pir v/s microwave

Izinzwa ze-Pir aziphakeme ngokwesayensi noma azikho ngaphansi kwezinzwa ze-microwave.Zombili izitayela zezinzwa zinezinzuzo ezifanele indawo ehlukahlukene nemisebenzi.Izibani ezinama-pir sensors ngokuvamile ziyinketho ephephe kakhulu yokusetshenziswa njengezibani zokuphepha.Babona kuphela umsebenzi ovela ezintweni eziphilayo ukuze bakwazi ukunikeza ama-alamu amanga ambalwa.Izinzwa ze-Microwave, ngakolunye uhlangothi, zingahlelwa kuphela ukuze zithole umsebenzi ovela ezintweni ezinosayizi womuntu;Nokho, lokhu ngokuvamile kufinyelelwa isici ngaphambi izinzwa ogibele izibani.

Izinzwa ze-Pir zidinga into ukuze ihambe emkhakheni wayo wokubona ukuze ziyibone.Ngenxa yalokho, zilungele izindawo ezimakwe kahle njengamaphasishi, ama-walkways, indledlana yokungena, kanye nemigwaqo, lapho zingenakugwenywa khona.Ngakolunye uhlangothi, izinzwa ze-Microwave, azidingi umugqa ocacile wokubona ukuze zithole ukunyakaza.Ngenxa yalokho, afaneleka kakhulu emakamelweni aklanywe ngendlela engavamile nezikhala ezinezithiyo eziningi.Futhi angeke bathembele kumasiginesha okushisa, okuwenza anembe kakhulu ezindaweni ezishisayo lapho inzwa ye-PIR ingakwazi ukusebenza kahle.

Izinzwa ze-Microwave nazo zizwela kakhulu, zizenza zilungele ukubona ukunyakaza okuhle kakhulu.Nokho, zingavikeleka endaweni evulekile noma eduze kwemizi ngoba zingase zibangelwa amaqabunga aphephukayo, izihlahla ezinyakazayo, nezinye izinto ezincane.Ukukhanya kwenzwa ye-PIR kunamandla kakhulu futhi kunokwethenjelwa engadini nokuvikelwa kwekhaya.