Duab CT thiab 3D Scanner Nrog Arduino: 12 Kauj Ruam (nrog Duab)

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:28

Los ntawm jbumsteadJon BumsteadFollow Ntxiv los ntawm tus sau:

Txog: Cov haujlwm hauv lub teeb, suab paj nruag, thiab khoom siv hluav taws xob. Nrhiav lawv txhua tus ntawm kuv qhov chaw: www.jbumstead.com Ntau Ntxiv txog jbumstead »

Kev suav tomography (CT) lossis suav tomography tomography (CAT) feem ntau cuam tshuam nrog kev siv lub cev vim tias nws ua rau cov kws kho mob pom cov qauv ntawm lub cev hauv tus neeg mob yam tsis tas yuav phais. Txhawm rau pom cov duab sab hauv tib neeg lub cev, CT scanner xav tau X-rays vim tias cov hluav taws xob yuav tsum muaj peev xwm nkag mus thoob lub cev. Yog tias qhov khoom yog ib nrab pob tshab, nws muaj peev xwm ua tau CT scanning siv lub teeb pom kev! Cov txheej txheem hu ua kho qhov muag CT, uas txawv dua li cov txheej txheem kho qhov muag nrov tshaj plaws hu ua kho qhov muag sib txuas tomography.

Txhawm rau kom tau txais 3D scan ntawm cov khoom ib nrab pob tshab, kuv tau tsim kho qhov muag CT scanner siv Arduino Nano thiab Nikon dSLR. Ib nrab ntawm txoj haujlwm, Kuv paub tias photogrammetry, lwm qhov txheej txheem 3D luam theej duab, xav tau ntau yam khoom siv tib yam li kho qhov muag CT scanner. Hauv cov lus qhia no, Kuv yuav hla cov kab ke uas kuv tau tsim uas muaj peev xwm ua CT scan thiab ntsuas duab. Tom qab tau txais cov duab, Kuv muaj cov kauj ruam ntawm kev siv PhotoScan lossis Matlab rau xam 3D kev tsim kho dua tshiab.

Rau chav kawm puv ntawm 3D scanning, koj tuaj yeem tshawb xyuas chav qhia qhia ntawm no.

Kuv tsis ntev los no tau paub txog Ben Krasnow tsim lub tshuab xoo hluav taws xob CT nrog Arduino. Zoo kawg!

Tom qab tshaj tawm, Michalis Orfanakis qhia nws lub tsev kho qhov muag CT scanner, uas nws yeej qhov khoom plig thib 1 hauv Kev Tshawb Fawb ntawm Qib Europe 2017! Nyeem cov lus hauv qab no rau cov ntaub ntawv tag nrho ntawm nws tsim.

Cov peev txheej ntawm kho qhov muag CT:

Cov keeb kwm thiab cov hauv paus ntsiab lus ntawm kev suav tomography rau kev tshuaj ntsuam 3-D hluav taws xob dosimeters los ntawm S J Doran thiab N Krstaji

Kev tsim kho duab peb sab rau CCDcamera raws li Kev Siv Kho Kom Zoo Tomography Scanner los ntawm Hannah Mary Thomas T, Tub Ntxhais Kawm Ntawv, IEEE, D Devakumar, Paul B Ravindran

Tsom tsom qhov muag ntawm qhov sib luag nqaj CCD kho qhov muag tomography cov cuab yeej rau 3D hluav taws xob gel dosimetry los ntawm Nikola Krstaji´c thiab Simon J Doran

Kauj Ruam 1: Xeem Tomography thiab Tom Qab Photogrammetry

Kev kuaj CT xav tau lub hauv paus hluav taws xob (piv txwv li xoo hluav taws xob lossis lub teeb) ntawm ib sab ntawm ib qho khoom thiab kuaj pom ntawm lwm sab. Tus nqi hluav taws xob uas ua rau nws mus rau lub ntsuas ntsuas nyob ntawm seb qhov khoom nqus tau zoo nyob ntawm qhov chaw tshwj xeeb. Ib daim duab tau txais nrog cov teeb tsa no ib leeg yog qhov ua rau X-ray. Xoo hluav taws xob zoo li duab ntxoov ntxoo, thiab muaj tag nrho cov ntaub ntawv 3D npaj rau hauv ib daim duab 2D. Txhawm rau tsim kho 3D, CT scanner tau txais xoo hluav taws xob hla ntau lub kaum ntse ntse los ntawm kev tig cov khoom lossis qhov chaw-ntes cov khoom.

Cov duab sau los ntawm CT scanner hu ua sinograms, thiab lawv tso saib qhov nqus ntawm X-rays los ntawm ib daim ntawm lub cev vs. Siv cov ntaub ntawv no, ntu ntu ntawm qhov khoom tuaj yeem tau txais los ntawm kev siv lej ua haujlwm hu ua inverse Radon transform. Yog xav paub meej txog qhov kev ua haujlwm no ua haujlwm li cas, txheeb tawm qhov vis dis aus no.

Tib lub hauv paus ntsiab lus yog siv rau lub khoos phis tawj CT scanner nrog lub koob yees duab ua lub ntsuas thiab LED teeb ua raws li lub hauv paus. Ib qho tseem ceeb ntawm kev tsim qauv yog tias lub teeb ci uas tau sau los ntawm lub lens zoo ib yam thaum mus los ntawm qhov khoom. Hauv lwm lo lus, lub lens yuav tsum yog telecentric.

Photogrammetry xav kom lub teeb pom kev los ntawm sab xub ntiag. Lub teeb pom kev tawm ntawm qhov khoom thiab tau sau los ntawm lub koob yees duab. Ntau qhov kev pom tuaj yeem siv los tsim daim duab 3D ntawm qhov chaw ntawm ib qho khoom hauv qhov chaw.

Thaum photogrammetry ua rau cov ntaub ntawv pov thawj ntawm cov khoom, CT scanning ua kom rov tsim kho cov qauv sab hauv ntawm cov khoom. Qhov tsis zoo ntawm qhov ntsuas CT yog qhov koj tuaj yeem siv cov khoom uas yog ib nrab pob tshab rau kev ntsuas (piv txwv li txiv hmab txiv ntoo, ntawv so ntswg, pos hniav, thiab lwm yam), thaum cov duab thaij duab tuaj yeem ua haujlwm rau feem ntau cov khoom. Tsis tas li ntawd, muaj ntau yam software zoo tshaj rau photogrammetry yog li kev rov tsim kho zoo li tsis txaus ntseeg.

Kauj Ruam 2: Txheej Txheem Txheej Txheem

Kuv tau siv Nikon D5000 nrog 50mm focal length f/1.4 lens rau kev thaij duab nrog lub tshuab luam ntawv. Txhawm rau ua kom pom kev siv lub ntsej muag, Kuv tau siv 180mm qhov sib npaug sib luag sib cais los ntawm 50mm lub lens nrog lub raj txuas. Lub lens tau tso tseg rau f/11 lossis f/16 txhawm rau nce qhov tob ntawm daim teb.

Lub koob yees duab tau tswj hwm siv lub qhov rooj kaw uas txuas lub koob yees duab mus rau Arduino Nano. Lub koob yees duab tau teeb tsa mus rau tus qauv PVC uas txuas rau lub thawv dub uas tuav lub hom phiaj kom luam theej duab thiab khoom siv hluav taws xob.

Rau CT scanning, lub teeb pom kev los ntawm nraub qaum nrog lub zog loj LED teeb. Tus nqi ntawm lub teeb sau los ntawm lub koob yees duab nyob ntawm seb qhov khoom nqus tau ntau npaum li cas. Txog 3D scanning, lub hom phiaj tau teeb pom kev los ntawm sab xub ntiag siv qhov chaw nyob ntawm LED uas tau tswj nrog Arduino. Lub hom phiaj tau tig los siv lub tshuab hluav taws xob stepper, uas yog tswj hwm siv H-choj (L9110) thiab Arduino.

Txhawm rau kho qhov ntsuas ntawm qhov ntsuas, kuv tsim lub tshuab luam ntawv nrog Lcd screen, ob lub hwj chim, thiab ob lub laub khawm. Cov ntsuas hluav taws xob tau siv los tswj cov naj npawb ntawm cov duab hauv kev tshuaj ntsuam thiab lub sijhawm raug, thiab lub pob nyem ua haujlwm raws li "nkag" khawm thiab khawm "rov pib dua". Lub vijtsam Lcd nthuav qhia cov kev xaiv rau kev tshuaj xyuas, thiab tom qab ntawd tam sim no qhov xwm txheej ntawm kev tshuaj xyuas thaum pib tau txais.

Tom qab tso tus qauv rau CT lossis 3D scan, lub tshuab luam ntawv yuav tswj lub koob yees duab, LEDs, thiab Lub Cev kom tau txais txhua daim duab. Cov duab tom qab ntawd siv los tsim kho tus qauv 3D ntawm cov khoom siv Matlab lossis PhotoScan.

Kauj Ruam 3: Cov Khoom Muag

Electronics:

• Arduino Nano Cov
• Stepper lub cev muaj zog (3.5V, 1A)
• H-choj L9110
• 16x2 Lcd npo
• 3 X 10k potentiometers
• 2 X pushbutons
• 220ohm resistor
• 1 kohm resistor
• 12V 3A fais fab mov
• Pob converter
• Lub zog fais fab poj niam
• Lub hwj chim chim ntsaws
• Micro USB txuas txuas
• Hloov fais fab
• Potentiometer pob qhov rooj
• PCB standoffs
• Pawg thawj coj saib xyuas
• Hlau qhwv hlau
• Daim kab xev hluav taws xob

Lub koob yees duab thiab teeb pom kev zoo:

• Lub koob yees duab, Kuv siv Nikon D5000 dSLR
• Prime lens (focal ntev = 50mm)
• Raj extender
• Achromatic doublet (focal ntev = 180mm)
• Shutter chaw taws teeb
• Addressable LED sawb
• Utilitech pro 1-lumen LED teeb lub teeb
• Ntawv rau diffusing lub teeb

Lub teeb lub thawv:

• 2x 26cmx26cm ¼ nti tuab plywood
• 2x 30cmx26cm ¼ nti tuab plywood
• 1x 30cmx25cm ½ nti tuab plywood
• 2x ½ inch inch dowel rods
• 8x L-puab PVC pob qij txha ½ inch txoj kab uas hla
• 8x T-shaped PVC pob qij txha ½ inch txoj kab uas hla
• 1 x PVC kab xev ½ inch txoj kab uas hla
• 4 ft1x2 npi
• Nyias txhuas ntawv
• Dub daim ntawv loj loj board
• Ceev thiab ntsia liaj qhov rooj
• Caij nplooj ntoos hlav

Cov Cuab Yeej:

• Soldering hlau
• Laum fais fab
• Hlau qhwv cov cuab yeej
• Dremel
• Jigsaw
• Hlau txiav
• Txiab
• Daim kab xev

Kauj Ruam 4: Lub Thawv Tsim thiab 3D Mounts

Qhov khoom plig loj hauv Epilog Challenge 9