Sau npe yuav ua rau peb social media rau cov lus qhia sai
This series aims to provide readers with an in-depth and progressive understanding of the Time of Flight (TOF) system. The content covers a comprehensive overview of TOF systems, including detailed explanations of both indirect TOF (iTOF) and direct TOF (dTOF). These sections delve into system parameters, their advantages and disadvantages, and various algorithms. Cov kab lus tseem tshawb xyuas cov khoom sib txawv ntawm cov txheej txheem sib txawv, xws li cov lo ntsiab muag thiab cov sensors thiab kev txais tos, thiab cov neeg tsav tsheb zoo li ASICs.
TOF, sawv rau lub sijhawm ntawm lub davhlau, yog ib txoj kev siv los ntsuas kev deb los ntawm kev suav lub sijhawm nws yuav siv sij hawm rau kev mus ncig ua si ib qho kev ncua deb hauv ib qho nruab nrab. This principle is primarily applied in optical TOF scenarios and is relatively straightforward. The process involves a light source emitting a beam of light, with the time of emission recorded. This light then reflects off a target, is captured by a receiver, and the time of reception is noted. The difference in these times, denoted as t, determines the distance (d = speed of light (c) × t / 2).
There are two primary types of ToF sensors: optical and electromagnetic. Optical ToF sensors, which are more common, utilize light pulses, typically in the infrared range, for distance measurement. Cov kab mob no tau tawm los ntawm lub sensor, cuam tshuam txog ib qho khoom, thiab rov qab mus rau lub sensor, qhov chaw taug kev mus ncig thiab siv los laij. In contrast, electromagnetic ToF sensors use electromagnetic waves, like radar or lidar, to measure distance. They operate on a similar principle but use a different medium for.
· , tus neeg tsav tsheb hluav taws xob ua haujlwm kom tsav lub laser, thiab cov khoom siv kho kho kom zoo nkauj xws li kev sib tsoo ntawm cov iav lo ntsiab muag lossis cov ntxaij vab tshaus.
· Tus txais (RX):Qhov no muaj cov ntsiab lus thiab cov ntxaij ntawm qhov tau txais kawg, sensors zoo li CIS, SPIPM nyob ntawm cov txheej txheem TOF, thiab cov duab kos duab los ntawm cov ntaub ntawv ntau ntawm cov tau txais.
·
·
Cov architecture qhia txog yuav ua li cas ib lub laser nqaj, los ntawm VCELS thiab hloov kho kho qhov muag, taug kev los ntawm qhov chaw, pom tias yog qhov chaw, thiab rov qab mus rau tus txais. The time lapse calculation in this process reveals distance or depth information. Txawm li cas los xij, tus architecture no tsis npog cov suab nrov, xws li lub suab nrov nrov lossis cov suab nrov ntau ntawm cov kev xav tsis zoo, uas tau tham txog tom qab hauv koob.
TOF lub tshuab yog feem ntau cov txheej txheem ntsuas ntawm lawv qhov kev ntsuas kev ntsuas: DTOF TOF (iTof), txhua tus nrog cov tswv yim sib txawv thiab cov txheej txheem sib txawv. Cov kab pib qhia tawm lawv cov ntsiab cai ua ntej xaiv mus rau hauv kev txheeb xyuas kev sib piv ntawm lawv cov txiaj ntsig, cov kev sib tw, thiab cov kab ke.
Txawm hais tias tus txheej txheem yooj yim zoo li yooj yim ntawm cov mem - emitting lub teeb kev teeb pom kev - cov nyom nyob hauv kev sib txawv ntawm qhov pom kev rov qab los ntawm ambient lub teeb. Qhov no yog hais los ntawm emitting txaus lub teeb kom ua tiav cov teeb liab siab-rau-suab nrov sib piv thiab xaiv wavelengths kom tsim nyog ib puag ncig ib puag ncig. Another approach is to encode the emitted light to make it distinguishable upon return, similar to SOS signals with a flashlight.
Cov koob tau los sib piv DTOF thiab nws yog, sib tham txog lawv cov kev sib txawv, thiab cov nyom ntawm 1D tof tof.
Direct TOF directly measures the photon's flight time. Its key component, the Single Photon Avalanche Diode (SPAD), is sensitive enough to detect single photons. DTOF ua haujlwm nyob nruab nrab ntawm Photon suav (TCSPC) los txiav txim siab lub sijhawm Photo
Kev tawm suab nrov laij lej lub sijhawm davhlau raws li theem txawv txav ntawm kev tawm thiab tau txais cov nthwv dej, feem ntau siv nthwv dej lossis kev ntsuas kev ua ntu zus lossis cov mem tes ua cov cim. ITOF tuaj yeem siv cov qauv qauv qauv, ntsuas kev siv lub teeb thaum lub sijhawm.
iTOF is further subdivided into continuous wave modulation (CW-iTOF) and pulse modulation (Pulsed-iTOF). CW-iToF ntsuas lub theem ua haujlwm uas tau tawm ntawm kev tawm thiab tau txais kev ua txhaum, thaum cov pulsed-itfem xam pulse hloov siv cov phiaj xwm nthwv dej.
Peb tshaj tawm tias qee cov duab tshwm rau hauv peb lub vev xaib tau sau los ntawm Is Taws Nem thiab Wikipedia, nrog lub hom phiaj ntawm kev txhawb kev kawm thiab cov ntaub ntawv sib koom. We respect the intellectual property rights of all creators. The use of these images is not intended for commercial gain.
Yog tias koj ntseeg tias ib qho ntawm cov ntsiab lus siv ua txhaum koj cov cai, thov hu rau peb. Peb muaj ntau tshaj qhov txaus siab coj kev ntsuas tsim nyog, suav nrog kev tshem cov duab lossis muab cov cai tswjfwm zoo thiab cov cai tswjfwm. Peb lub hom phiaj yog tswj lub platform uas nplua nuj nyob hauv cov ntsiab lus, ncaj ncees, thiab hwm cov cuab yeej kev txawj ntse ntawm lwm tus.
sales@lumispot.cnCov. We commit to taking immediate action upon receiving any notification and guarantee 100% cooperation in resolving any such issues.
