Kev taw qhia luv luv rau kev ua haujlwm thiab cov yam ntxwv ntawm theem ntau yam finder
Raws li qhov muab kev hloov kho thiab cov txheej txheem atmospheric, qhov zaus c / (4πf) yog qhov tsis tu ncua, lub sijhawm no, qhov kev ntsuas qhov deb dhau los ua qhov ntsuas ntawm tus naj npawb ntawm ib nrab wavelength uas muaj nyob rau hauv daim ntawv ntsuam xyuas kab thiab qhov ntsuas ntawm cov feem ntau tsawg. tshaj ib nrab wavelength, uas yog, qhov ntsuas ntawm N los yog φ. Vim yog txoj kev loj hlob ntawm niaj hnub precision machining tshuab thiab xov tooj cua theem ntsuas tshuab, qhov ntsuas ntawm φ tau mus txog qhov raug siab.
Txhawm rau ntsuas lub kaum sab xis ntawm theem φ tsawg dua π, txoj kev sib txawv tuaj yeem siv los ntsuas nws. Feem ntau, ncua sij hawm ntsuas thiab ntsuas theem digital yog siv dav tshaj plaws. Tam sim no, luv luv-ntau laser rangefinders tag nrho siv cov theem ntsuas digital kom tau txais φ.
Raws li tau hais los saum toj no, feem ntau, theem laser ntau yam siv cov emissions ntawm laser beams nrog modulated signals, thiab nyob rau hauv thiaj li yuav ua kom tiav high ranges raug, nws yog tsim nyog los configure kev koom tes lub hom phiaj. Tam sim no, lub tes tuav laser rangefinder yog lwm yam tshiab ntawm pulse laser rangefinder, uas tsis yog tsuas yog me me thiab lub teeb hauv qhov hnyav, tab sis kuj siv cov theem ntsuas pulse broaden subdivision technology, uas tuaj yeem ua tiav millimeter-theem raug yam tsis muaj Cov hom phiaj kev sib koom tes, thiab qhov kev ncua deb tau tshaj 100m, thiab tuaj yeem tso saib qhov kev ncua deb sai thiab raug.
Classification ntawm electromagnetic wave rangefinder
1. Raws li txoj cai sib txawv, nws tuaj yeem muab faib ua pulse rangefinder thiab theem rangefinder. Tus qub yog optical pulse emitted los ntawm lub tshuab hluav taws xob mem tes, thiab qhov kev ncua deb tuaj yeem tau los ntawm kev siv tus lej ntawm cov pulses nyob rau hauv lub sij hawm luv luv ntawm cov mem tes rov qab mus rau ntawm txoj kab kev sojntsuam, xws li lub laser lub hli ntes thiab lub laser satellite. rangefinder. Lub tom kawg yog ib qho txuas ntxiv sine modulated yoj tawm los ntawm ntau qhov nrhiav, thiab cov theem hloov pauv tsim los ntawm cov nthwv dej modulated propagating rov qab thiab tawm ntawm txoj kab kev soj ntsuam yog ntsuas kom pom qhov deb, xws li laser range finder thiab infrared range finder. Cov cuab yeej siv theem txheej txheem rau kev sib txawv muaj qhov luv luv thiab qhov tseeb siab, thiab feem ntau yog siv rau hauv kev tshawb fawb geodetic.
2. Raws li cov cab kuj, cov hluav taws xob nthwv dej hauv qhov chaw microwave lossis lub teeb yoj raws li cov cab kuj hu ua microwave rangefinder lossis photoelectric rangefinder feem. Photoelectric rangefinders uas siv laser lossis infrared teeb raws li cov cab kuj hu ua laser rangefinders lossis infrared rangefinders feem. Lub infrared range finder siv cov fluorescence tsim los ntawm gallium arsenide lub teeb-emitting diode raws li cov cab kuj, thiab qhov kev siv ntawm cov emission infrared tuaj yeem hloov nrog qhov siv ntawm cov teeb liab txhaj tshuaj. Yog li ntawd, nws muaj ob txoj haujlwm ntawm cov cab kuj thiab cov modulator. Gallium arsenide lub teeb-emitting diodes yog me me, siab nyob rau hauv brightness, tsawg zog noj, ntev nyob rau hauv lub neej thiab tsis tu ncua nyob rau hauv lub teeb emissions, yog li infrared rangefinders yog dav siv. Electromagnetic yoj ntau yam finder muaj qhov zoo ntawm kev ua haujlwm siab, kev ua haujlwm sai thiab kev cuam tshuam me me los ntawm huab cua thiab struts.
