Lub handheld high-precision telescopic laser rangefinder txoj haujlwm ua haujlwm thiab cov yam ntxwv
TM1500 High Precision Telescope Handheld Laser Rangefinder Cov Cai:
Laser range finders feem ntau siv ob txoj hauv kev los ntsuas qhov deb: pulse method thiab theem txheej txheem. Cov txheej txheem ntawm pulse txoj kev sib txawv yog raws li nram no: qhov ntau finder emits; lub laser yog reflected los ntawm cov khoom ntsuas thiab ces tau txais los ntawm qhov range finder, thiab cov range finder sau lub sij hawm ntawm lub laser rov qab mus rau tib lub sij hawm. Ib nrab ntawm cov khoom ntawm qhov ceev ntawm lub teeb thiab lub sij hawm mus txawv tebchaws yog qhov kev ncua deb ntawm qhov rangefinder thiab cov khoom ntsuas. Qhov tseeb ntawm kev ntsuas qhov deb los ntawm txoj kev mem tes yog feem ntau nyob ib puag ncig ntxiv /-1 meter. Tsis tas li ntawd, qhov ntsuas qhov muag tsis pom thaj tsam ntawm hom rangefinder feem ntau yog li ntawm 5-15 meters.
TM1500 High Precision Telescope Handheld Laser Rangefinder Nta:
Cov cuab yeej ua haujlwm nrog semiconductor lasers nrog wavelengths ntawm 905 nm thiab 1540 nm. Rau 905nm thiab 1540nm laser rangefinders, peb hu lawv "kev nyab xeeb". YAG laser ua haujlwm ntawm lub wavelength ntawm 1064 nm. Lub wavelength ntawm 1064 nanometers muaj teeb meem rau tib neeg cov tawv nqaij thiab ob lub qhov muag, tshwj xeeb tshaj yog yog hais tias lub qhov muag tsis pom kev kov lub laser nrog 1064 nanometers wavelength, kev puas tsuaj rau lub qhov muag yuav ua rau tuag taus. Yog li ntawd, nyob rau hauv txawv teb chaws, lub 1064 nanometer laser yog kiag li txwv nyob rau hauv lub handheld laser rangefinder. Hauv Suav teb, qee lub tuam txhab kuj tsim 1064nm laser range finders. Raws li rau 1064nm laser range finder, vim tias nws muaj feem cuam tshuam rau tib neeg lub cev, peb hu nws "tsis muaj kev nyab xeeb".
Ib tug txheej txheem cej luam ntawm theem range finders
Phase ranging feem ntau yog siv nyob rau hauv precision range. Vim nws cov high precision, feem ntau nyob rau hauv millimeter theem, thiaj li yuav muaj kev cuam tshuam lub teeb liab thiab txwv lub ntsuas lub hom phiaj rau ib tug tshwj xeeb point commensurate nrog rau qhov tseeb ntawm lub ntsuas, no rangefinder yog nruab nrog ib tug reflector hu ua lub hom phiaj kev koom tes. iav.
Phase laser ranging feem ntau yog siv nyob rau hauv precision ntau yam. Vim nws cov high precision, feem ntau nyob rau hauv millimeter theem, thiaj li yuav muaj kev cuam tshuam lub teeb liab thiab txwv lub ntsuas lub hom phiaj rau ib tug tshwj xeeb point commensurate nrog rau qhov tseeb ntawm lub ntsuas, no rangefinder yog nruab nrog ib tug reflector hu ua lub hom phiaj kev koom tes. iav.
Yog hais tias lub angular zaus ntawm lub teeb modulated yog ω, thiab lub sij hawm ncua sij hawm tshwm sim los ntawm ib puag ncig ncig ntawm qhov kev ncua deb D los ntsuas yog φ, lub sij hawm sib thooj t tuaj yeem qhia tau tias:
t=φ/ω
Hloov qhov kev sib raug zoo no rau hauv (3-6) qhov deb D tuaj yeem qhia tau tias
D=1/2 ct=1/2 c·φ/ω=c/(4πf) (Nπ plus Δφ)
=c/4f (N plus ΔN)=U(N plus )
Nyob rau hauv cov mis: φ — tag nrho theem ncua generated los ntawm lub teeb liab rov qab mus rau lub ntsuas kab ib zaug.
ω—Lub angular zaus ntawm lub teeb liab modulating, ω=2πf.
U — unit ntev, tus nqi yog sib npaug rau 1/4 modulation wavelength
N - Tus naj npawb ntawm cov kev hloov pauv ib nrab-yav dhau los suav nrog hauv kab tshawb fawb.
Δφ - Qhov feem ntawm theem ncua qis dua π tsim los ntawm lub teeb liab rov qab mus rau qhov ntsuas kab ib zaug.
ΔN—Qhov feem ntawm qhov kev hloov pauv nthwv dej uas muaj nyob rau hauv cov kab ntawv tshawb fawb uas tsawg dua ib nrab ntawm lub wavelength.
ΔN=φ/ω
