Yuav ua li cas yuav ua rau ib tug tachometer nrog lawv ob txhais tes?

Ua ntej ua ib tachometer nrog koj ob txhais tes, koj yuav tsum to taub cov yam ntxwv ntawm no ntaus ntawv. Cov kev ntsuas siv los ntsuas tus xov tooj ntawm revolutions ntawm lub hwj chim tsev thaum lub sij hawm lub zog. Cov ntaub ntawv no yog tso tawm rau ntawm cov zaub nyob rau hauv lub dashboard los yog nyob rau hauv ib tug tshwj xeeb screen. Xav txog lub hauv paus ntsiab ntawm lub tachometer thiab cov hau kev ntawm ua rau nws tus kheej.

peb siv ib tug microcontroller

Mus ua ib tug tachometer nrog nws txhais tes rau ntawm lub hauv paus ntawm lub microcontroller, koj yuav tsum tau qhov nram qab no kom paub meej:

• Ncaj qha microboard, haum Arduino Circuit Court.
• Teeb ntawm resistors.
• Rau LED version yuav tsum tau LED-caij.
• Diodes (infrared thiab fotoanalog).
• Saib xyuas. Piv txwv li, LCD-zaub.
• Cov ua haujlwm sau npe 74HC595 hom.

Nyob rau hauv txoj kev sib tham ntxiv txoj kab txiav yog tsis muaj feem xyuam, thiab kho qhov muag regulator. Qhov no yuav tsum tsis txhob muaj teeb meem nrog lub rotor thickness, tus xov tooj ntawm tuaj yuav muaj tsis ntxim rau cov nqe lus thiab yuav muaj peev xwm nyeem ntaub ntawv hais txog cov kev sib hloov ntawm lub nruas.

milestones

Hauv qab no yog ib kauj ruam yog kauj ruam qhia yuav ua li cas yuav ua rau ib tug tachometer nrog nws txhais tes rau ntawm lub hauv paus ntawm lub microcontroller:

1. Yuav pib nrog fine ntwav txhuam ntoo daws teeb thiab ib tug photodiode li ntev raws li lawv tsis coj ib tug ca zoo.
2. Manufactured zoo xws li cov caij nyob rau hauv daim ntawv ntawm ib daim hlab, thiab ces tus ob qhov chaw yog koom los ntawm nplaum thiab dawb lias nyob rau hauv xim dub.
3. Thaum ib tug tom qab theem mounted diodes, lawv yog soldered nyob ntawm tej.
4. Tseem ceeb heev qhov tseem ceeb ntawm resistors tej zaum yuav txawv, nyob ntawm seb siv photodiode. Lub rhiab heev yuav cia mus kho cov potentiometer.
5. Thaum kawm LED Circuit Court tsheb tachometer yuav tsum to taub hais tias muaj yog muab ib tug ua haujlwm register ntawm yim me me. Nyob rau hauv tas li ntawd, rau hauv Circuit Court muaj xws li ib tug kua siv lead ua zaub. Yuav kom txhim kho tau qhov teeb nyob rau hauv lub vaj tse yog ua li cas lub qhov me me.
6. Thaum cov kauj ruam kawg yuav tsum tau mus solder resistor (270 ohm) mus rau lub diode, thiab ces mount nws mus rau hauv lub nplos. Lub xws yog tswvcuab rau hauv lub nyhav raj uas muab ntxiv zog fixture.

Ua ib tug yooj yim tachometer nrog lawv ob txhais tes

Rau lub chaw ua khoom ntawm no ntaus ntawv yog muab raws li ib lub hauv paus rau lub tswvyim. Qhov kev xaiv no yog zoo tagnrho rau cov neeg uas muaj nrog lub caij paus ntawm qhov teeb meem. Nws yog ib nqi sau cia hais tias ntaus ntawv no yog tsis yog 100 feem pua yog, thiab cov tachometer yuav tsis tsum tshaj tawm hauv xov nyob rau hauv cov zaub hauv lub xov tooj ntawm rotations ib feeb. Cuaj kaum lub tshuab xam zauv - ib tug zoo lwm txoj rau lwm pab kiag li lawm nyob rau hauv ib tug kab Pib ntsais koj teeb.

inductive los yog zoo li controllers yog siv los tsim lub teeb liab xws li. Thaum disk kev sib hloov yog tso tawm ib tug teeb liab tom qab txhua kiv puag ncig. Hu rau peb ntawm no taw tes yuav tsum tau qhib. Lawv raug kaw thaum lub unit kis tus disc hniav. Saib tachometer (nrog lawv tus kheej txhais tes, raws li peb tau pom, ua rau nws yooj yim txaus), hom tshuaj no yog zoo heev rau cov neeg mob qhov twg cov kev ntsuam tsis tshua muaj. Cov neeg uas xav los tsim ib tug tsis tu ncua ceev xws li, nws yog zoo dua rau opt rau ib tug ntau txhim khu kev qha ntaus ntawv.

exploitation

Qhov yooj yim tachometer, nrog nws tus kheej ob txhais tes ua nyob rau hauv lub hauv paus ntawm lub tswvyim mus ua hauj lwm tom qab soldering rau cov neeg mus rau lub tas li ntawd ntawm ib tug computer khawm.

Ntsuas ntawm lub muab ceev RPM raws li nram no:

1. Nws puv rau lub tswvyim.
2. Synchronously tshuab txais "+" qhov tseem ceeb thiab "1".
3. Lub gadget sau rau nws, thiab ua ntsuas. Yuav kom paub meej tseeb readings, nrog rau ib tug lub tshuab xam zauv yuav tsum tau pib lub stopwatch.
4. Tos 30 vib nas this thiab ces saib nyob rau qhov kev tshuaj ntsuam. Nws yuav tsum tshwm sim uas tsim nyog tus nqi.
5. Qhov no xam yog tus naj npawb ntawm revolutions nyob rau hauv 30 vib nas this. Txawj hauv daim duab los ntawm ob tug, peb muab tau cov xov tooj ntawm rotations ib feeb.

analog xaiv

Hauv tachometer, tau nrog nws tus kheej ob txhais tes rau ib tug diesel los yog roj av cav, yog teem rau lub transformation ntawm lub electron momentum thiab thauj nws mus rau cov zaub chav tsev. Nyob rau hauv sib piv rau qhov no ntaus ntawv, cov qauv yog hloov dua siab tshiab rau hauv ib co analog mem tes ib theem zuj zus ntawm zeros thiab sawv daws yuav, uas yog nyeem thiab decrypted los ntawm lub maub los.

Lub tiav set ntawm analog tachometer muaj xws li cov nram qab no hais:

• Microboard uas lub hom phiaj - lub hloov dua siab tshiab ntawm analog pulses.
• Thaiv txuas tag nrho cov ntsiab ntawm cov ntaus ntawv.
• Cov teev, uas ua hauj lwm pab ua kom pom cov kev ua tau zoo.
• Lub xub, uas muaj nyob rau tam sim nqi.
• Tshwj xeeb kauj axis, kom ntseeg tau qhov tseeb lag luam ntawm lub xub.
• Cov kev nyeem ntawv xws inductive hom ntaus ntawv.

Yuav ua li cas yuav ua rau ib cov tachometer nrog lawv ob txhais tes

Devices ntawm no hom muaj tus zoo tib yam, tiam sis txawv yam ntxwv hais. Yuav kom peb tsim koj tus kheej ntaus ntawv, koj yuav tsum tau qhov nram qab no kom paub meej:

• Yim-ntsis converter.
• Processor uas converts tus pulses rau hauv ib cov saw ntawm zeros thiab sawv daws yuav.
• Muab ua kom pom pov thawj.
• Apparatus cuam tshuam hom (kev sib hloov regulator) nrog cov amplifier. Rau lub hom phiaj no, ib tug yuav siv tshwj xeeb shunts, nyob ntawm seb yam teeb meem.
• Tus nqi rau clearing ntaub ntawv.
• Tsis tas li ntawd, lub processor muaj peev xwm yuav kev cob cog rua rau lub maub los coolant kub, huab cua nyob rau hauv lub hav zoov, engine kua siab, thiab cov zoo li.
• Yuav kom kho cov lag luam ntawm tus dais xav tau rau nruab tshwj xeeb software.

txhua yam kev hloov kho

Neeg kho tshuab tsheb tachometer, tau nrog nws tus kheej txhais tes, tsis yuav tsum tau ib lub hwj chim mov thiab tswj circuits. Cov ncej yog rigidly tsau tas mus li magnet hom. Thaum rotating vortex teb no yog tsim uas entrains tshwj xeeb thawv ntawm magnetic khoom. Thicket tsim kuj mus sib hloov kauv caij nplooj ntoos hlav. Qhov ntau dua cov kev ceev, qhov ntau nquag deflected ncej nruab nrog ib tug xub.

Lub ntsiab kom zoo dua ntawm ib tug txhua yam ntaus ntawv - ib tug yooj yim tsim thiab tsis muaj yuav tsum tau mus nrhiav tau hluav taws xob lub hwj chim. Ntawm cov drawbacks tej zaum yuav tau hais ib tug siab cov neeg, thiab pab txhawb lub sab txwv ntawm kev ntsuas. Nws yog ib nqi sau cia hais tias qhov uas tsis muaj kev ceev rab koob tsis deflected.

diagnostics

Tsim los ntawm txhais tes tachometer kuj yuav puas ntsoog. Yuav kom qhia tau tias qhov ua rau ntawm qhov teeb meem yuav tsum tau los mus ua kom muaj tus mob. Nyob rau hauv tsheb txawm peem rau nrog ib tug interface OBD II, pov thawj yog tau siv lub scanner. Ntxiv mus, lub tshuab hluav taws xob ntaus ntawv yuav tshuaj uas siv tej ntawm tus mem tes generator. Qhov zoo tshaj plaws kev xaiv yuav tsum yog ib tug paub zoo ntaus ntawv, ib tug oscilloscope los yog zaus counter.

Neeg kho tshuab analog thiaj paub hais tias los ntawm ib tug xyaum los yog ntswj ntsia hlau. Nyob rau hauv lub xub ntiag ntawm lub regulator rau kev ceev cov tshev mis yooj yim. Lub rear ib feem ntawm lub cable yog tsau nyob rau hauv ib lub yas dhos, thiab cov enclosure yog rigidly tsau.

kho

Kho ntaus ntawv yog tsis suav tias yog heev yooj yim. Cov feem ntau nyuaj rau kev txhim kho lub module yog ib qho piv txwv ntawm ib qho kev siv hluav taws xob Circuit Court. Tom qab txhaum localization yuav tsum tau hloov lub puas yam khoom. Raws li txoj cai, feem ntau tawm ntawm kev txiav txim nkag teb chaws, hu rau qhov taw qhia, lub sensor, magnet nyob rau hauv crankshaft.

Nrog tus neeg kho tshuab variant yog yooj yim npaum li. Nws yog txaus los hloov lub yam khoom, uas nyob tawm ntawm qhov kev txiav txim rau ib tug tshiab spare. Nrog xws tachometers tsheb muaj siab nqi thiab hnyav ncawv siv tsheb. Yog li ntawd, nrhiav ib yam khoom yuav tsis tau yooj yim nyob rau hauv lub tsheb lag luam los yog disassembly. Tom qab kho ntawm tus dais kev twb kev txuas yuav tsum tau tsis muaj calibration.

hloov

Tachometer rau tsheb, tau nrog nws tus kheej txhais tes, tej zaum yuav hloov li cas lawm. Vim hais tias cov cav tov feem ntau ib lub cev muaj zog ncej kiv puag ncig qhov taw qhia outputs ib tug khub ntawm pulses, lub oscillator zaus yuav tsum tau teem rau ntawm ob zaug cov calibration ntaus ntawv.

Yuav kom kho cov tachometer tsis ua teeb meem, nws yog tsim nyog los kawm txog cov hauv paus ntsiab lus ntawm tus choj Circuit Court. Piv txwv li, nrog sib npaug proportions qhov tseem ceeb ntawm resistors, lub voltage ntawm lub ntsiab lus yog muaj sib npaug, thiab yog li ntawd, tsis muaj tam sim no tsev thiab lub koob yog nyob rau zero. Yog hais tias tus nqi ntawm cov thawj resistor los txo cov voltage nce ntawm ib tug taw tes, thaum lub sij hawm thib ob tseem unchanged. Tam sim no ntws los ntawm lub milliammeter thiab lub xub yuav pib tsiv. Qhov no txhais tau tias nyob rau ntawm lub qhov voltage thiab nyob ib tug thib ob point ntawm kev hloov no yog thaum ib tug thawj txoj hauj lwm, lub tachometer rab koob tsiv txheeb ze mus rau lub scale.

Nyob rau hauv xaus

Ua koj lub tsheb ob txhais tes tachometer heev tiag tiag, yog tam sim no yog hais tias tus yooj yim kev txawj ntse ntawm hluav taws xob engineering thiab muaj siab. Tag nrho cov uas yog yuav tsum tau - nws yog npaj txhij Circuit Court, ib tug soldering hlau thiab yooj yim kom paub meej. Nws yuav siv sij hawm ua hauj lwm tsis muaj ntau tshaj li ob hnub, ua ke nrog lub dismantling thiab installation. Koj muaj peev xwm xaiv cov khoom raws li lawv xav tau kev pab: los ntawm ib tug yooj yim ntaus ntawv raws li nyob rau hauv lub xam zauv los yog cov ntau tshaj tachometer raws li nyob rau hauv Arduino tswvyim. Ua ntej koj pib, tshawb lub hauv paus ntsiab lus ntawm cov kev ntaus ntawv nyob rau hauv koj lub tsheb.