Kev taw qhia txog hom rangefinder thiab lawv ua haujlwm li cas
Cov rangefinders feem ntau tuaj yeem muab faib ua luv luv, nruab nrab ntau, thiab qhov siab rangefinders nyob rau hauv cov nqe lus ntawm ntau yam;
Los ntawm cov khoom siv modulation siv los ntawm rangefinders, lawv tuaj yeem muab faib ua photoelectric rangefinders thiab acoustic rangefinders.
Photoelectric rangefinder
Optoelectronic rangefinders tau muab faib ua ob hom raws li kev sib txawv: theem txoj kev rangefinders thiab pulse rangefinders.
Pulse rangefinder yog ib qho khoom siv uas siv lub teeb ntawm lub teeb tawm ntawm lub hom phiaj los ntsuas lub sij hawm nws siv rau lub hom phiaj khoom kom muaj kev cuam tshuam lub teeb rov qab, yog li xam qhov kev ncua deb ntawm qhov ntsuas thiab lub hom phiaj khoom. Vim qhov zoo directionality thiab ib wavelength ntawm laser, nws yog feem ntau siv raws li ib tug modulation khoom nyob rau hauv optoelectronic rangefinders. Yog li ntawd, pulse rangefinders feem ntau hu ua laser rangefinders.
Laser rangefinders siv txoj kev pulse tuaj yeem ua tiav ntau yam thiab tuaj yeem siv rau kev ntsuas sab hauv thiab sab nraum zoov. Qhov ntau yam yog 3.5 txog 2000 meters, thaum muaj ntau yam laser rangefinders tuaj yeem ncav cuag 5000 meters. Laser rangefinders rau kev ua tub rog tuaj yeem ncav cuag qhov ntev dua. Vim muaj peev xwm ntsuas cov hom phiaj nyob deb, laser rangefinders feem ntau muaj lub kaw lus telescopic, tseem hu ua laser rangefinder telescope, txhawm rau pom qhov pom qhov sib txawv ntawm cov neeg siv. Daim duab 1 yog daim duab kos duab ntawm peb lub raj laser rangefinder telescope.
Qhov tseeb ntawm laser rangefinders feem ntau yog nyob ntawm qhov tseeb ntawm qhov ntsuas ntsuas ntawm lub sijhawm ntawm laser emission thiab txais tos. Raws li cov cuab yeej technology thiab daim ntawv thov teeb meem siv, laser rangefinders tuaj yeem muab faib ua cov qauv laser rangefinders nrog qhov tseeb ntawm li 1 meter (tsuas yog siv rau kev ua si sab nraum zoov, yos hav zoov, thiab lwm yam) thiab high-precision laser rangefinders siv hauv kev soj ntsuam, ntsuas av, kev tsim kho, kev siv engineering, kev ua tub rog thiab lwm lub sijhawm nrog kev ua haujlwm siab.
Phase method rangefinder yog rangefinder uas hloov cov theem ntawm lub laser thiab tau txais kev ncua deb los ntawm kev ntsuas theem sib txawv ntawm lub laser reflected. Vim yog qhov yuav tsum tau kuaj xyuas cov theem ntawm lub laser reflected, nws yog ib qho tsim nyog yuav tau txais lub teeb liab nrog kev siv zog. Xav txog kev nyab xeeb ntawm tib neeg lub qhov muag, lub pulse laser rangefinder tsis tuaj yeem siv los ua lub kaw lus telescopic, thiab qhov ntau me me. Qhov dav dav rau qhov sib txawv yog 0.5mm txog 150 meters. Feem ntau, theem laser rangefinder siv 635 nanometer (visually liab) laser raws li cov khoom debugging, tseem hu ua infrared rangefinder. Txawm li cas los xij, lub ntsiab lus ntawm laser tsis txhais los ntawm xim. Yog hais tias ib tug 635 nanometer laser rangefinder yog ncaj qha irradiated ntawm tib neeg lub qhov muag, nws yuav ua rau irreversible kev puas tsuaj. Cov nyeem tau qhia kom siv thiab tiv thaiv kom raug.
Acoustic rangefinder
Acoustic nrug ntsuas yog ib qho cuab yeej uas siv cov yam ntxwv ntawm lub suab tsis zoo rau kev ntsuas. Feem ntau, ultrasonic nthwv dej yog siv los ua cov khoom hloov kho, uas yog, ultrasonic nrug meters. Lub transmitter ultrasonic emits ultrasonic tsis nyob rau hauv ib qho kev taw qhia thiab pib lub sij hawm nyob rau tib lub sij hawm. Lub ultrasonic tsis propagate nyob rau hauv cov huab cua thiab tam sim ntawd rov qab thaum ntsib obstacles. Ultrasonic receiver tam sim ntawd cuam tshuam lub sij hawm raws li tau txais reflected nthwv dej. Los ntawm kev tshawb nrhiav tsis tu ncua ntawm tus ncha uas cuam tshuam los ntawm kev cuam tshuam tom qab nthwv dej emission, lub sijhawm sib txawv T ntawm kev xa cov nthwv dej ultrasonic thiab tau txais echoes yog ntsuas, thiab tom qab ntawd qhov kev ncua deb L yog xam.
Vim qhov tseem ceeb ntawm qhov kub thiab txias, av noo, huab cua siab, thiab lwm yam ntawm kev nthuav tawm ceev ntawm ultrasonic nthwv dej hauv huab cua, ntsuas qhov yuam kev yog loj. Tsis tas li ntawd, vim qhov ntev wavelength ntawm ultrasonic tsis, qhov propagation nrug yog luv, uas ua rau qis ntsuas qhov tseeb rau dav ultrasonic rangefinders. Txawm li cas los xij, vim lub kiv cua-zoo li nthuav tawm ntawm ultrasound, nws qhov kev tshawb pom ntau yog loj dua li ntawm photoelectric rangefinders, thiab nws tau siv dav hauv kev tsim vaj tsev xws li kev tiv thaiv kev nyab xeeb, kev ntsuas qhov siab ntawm cable, thiab nrhiav kev cuam tshuam.
