Hom gauges: piav qhia, cov lus qhia rau kev siv, yam ntxwv thiab kev

Hom gauge transducers yog pab kiag li lawm rau converting lub ntsuas elastic deformation ntawm cov khoom lub cev rau hauv ib tug hluav taws xob lub teeb liab. Qhov no tshwm sim vim cov kev hloov ntawm tus neeg xyuas pib kuj ntawm lub sensor hloov nws geometrical qhov ntev ntawm lub ncab los yog compression.

Hom gauge: lub hauv paus ntsiab lus ntawm kev txiav txim

Cov ntsiab keeb ntawm tus dais no yog ib tug sab gauge txuas mus rau ib tug elastic qauv. Load hlwb kom stepwise loading qhia kom meej ua quab yuam thiab li ntsuas lub magnitude ntawm hluav taws xob kuj. Ces, hloov nws yuav tsum muaj ntaub ntawv los mus txiav txim rau qhov tseem ceeb ntawm tsis paub hais tias load thiab deformation yog proportional rau nws.

Nyob ntawm seb lub hom sensors yuav ntsuas:

• hwj chim;
• siab;
• xaav;
• torque;
• acceleration.

Txawm lub feem ntau sophisticated Circuit Court tsim loading los rau lub lim gauge yog txo mus rau lub nro los yog compression raws nws lattice ntev seem, hu ua ib lub hauv paus.

Yuav ua li cas siv ib hom gauges

Feem ntau hom ntawm sab gauges nrog qhov kev hloov nyob rau hauv kuj nyob rau hauv cov neeg kho tshuab kev nyuaj siab - ib hom gauges.

hlau lim gauges

Qhov yooj yim piv txwv yog ib tug kab ya ntawm ib tug nyias hlau uas yog txuas mus rau txoj kev tshawb no kom paub meej. Nws kuj yog: r = PL / s, nyob qhov twg p - resistivity, L - qhov ntev, s - sectional cheeb tsam.

Thaum lub Glued daim yog elastically deformed hlau. Nyob rau tib lub sij hawm hloov nws geometric qhov ntev. Thaum compressing ib tug ntoo khaub lig seem ntawm tus neeg xyuas pib nce, thiab tensile - decreases. Yog li ntawd, qhov kev hloov nyob rau hauv kuj hloov kos npe rau nyob ntawm seb cov kev taw qhia ntawm deformation. Yam ntxwv yog linear.

Tsis tshua muaj rhiab heev gage coj mus rau qhov yuav tsum tau rau kom qhov ntev ntawm hlau nyob rau hauv ib tug me me rau thaj tsam ntawm kev ntsuas. Ua li no, nws yog ua nyob rau hauv daim ntawv ntawm ib tug kauv (lattice) ntawm hlau, Document rau ob tog ntawm lub rwb thaiv tsev phiaj lacquer zaj duab xis los yog daim ntawv. Rau kev twb kev txuas rau hluav taws xob Circuit Court apparatus yog muab rau ob tug tooj liab davhlau ya nyob twg conductors. Lawv welded los yog soldered mus rau lub xaus ntawm lub hlau helix thiab muaj zog txaus mus txuas rau ib tug hluav taws xob Circuit Court. Hom gage txuas mus rau cov elastic los yog cov tshawb nrhiav ib feem siv nplaum.

Hlau lim gauges muaj cov nram qab zoo:

• yooj yim qauv;
• linear dependence ntawm deformation;
• me me luaj li cas;
• me me nqi.

Qhov tsis zoo muaj xws li tsis muaj rhiab heev, cov nyhuv ntawm ambient kub, qhov yuav tsum tau rau kev tiv thaiv tiv thaiv dej, siv xwb nyob rau hauv lub teb ntawm elastic deformation.

Cov hlau yuav deformed thaum tus quab yuam ntawm adhesion rau muab nws deb tshaj lub dag zog yuav tsum tau rau nws extension. Qhov ratio ntawm qhov chaw tsevneeg rau tus ntoo khaub lig-sectional cheeb tsam yuav tsum tau 160 rau 200, uas sib raug rau nws txoj kab uas hla 0,02-0,025 hli. Nws tso cai nce mus rau 0.05 hli. Ces thaum lub sij hawm ib txwm ua hauj lwm sab gage nplaum txheej puas lawm. Tsis tas li ntawd, lub sensor hauj lwm zoo rau compression, txij li thaum filaments ntawm hlau ib nrog cov nplaum zaj duab xis thiab cov workpiece.

ntawv ci sab gauges

Tsis thiab cov lag luam ntawm tus ntawv ci sab gauge yog tib yam li hais tias ntawm lub hlau. Tsuas yog cov ntaub ntawv uas yog ib tug ntawv ci ua los ntawm nichrome, constantan los yog titanium-txhuas. manufacturing photolithography technology tso cai rau kom muab tau ib txoj lattice configuration thiab automate txoj kev.

Piv nrog rau hlau, ntawv ci sab gauges rhiab, ntau tam sim no yog dhau zoo kis tus deformation kom muaj ib tug ntau ruaj thiab nyuab me ntsis duab cov lus xaus.

semiconductor lim gauges

Sensor rhiab heev yog kwv yees li 100 lub sij hawm ntau dua li cov hlau uas tso cai rau feem ntau mus thov lawv tsis muaj amplifiers. Qhov tsis zoo yog brittleness, ib tug zoo kawg dependence rau lub ambient kub thiab ib tug txiav txim nphoo tsis.

yam ntxwv ntawm sab gages

1. Base - lattice neeg xyuas pib ntev (0,2-150 hli).
2. Standard kuj R - kuj muaj nuj nqis (ohm 10-1000).
3. Ua hauj lwm mov tam sim no kuv _p - tam sim no uas tus gage yog tsis appreciably rhuab. Nyob rau hauv cov ntaub ntawv ntawm overheating hloov lub zog ntawm cov sensor cov ntaub ntawv, hauv paus thiab ib tug nplaum txheej, distorting cov pov thawj.
4. koob qhia hais tias qhov zoo tshaj: s = (ΔR / R) / (ΔL / L), qhov chaw uas R thiab L - feem qhov hluav taws xob kuj thiab ntev ntawm lub mos txwv sojntsuam; ΔR thiab ΔL - kuj hloov thiab deformation los ntawm ib tug sab nraud quab yuam. Rau ntaub ntawv sib txawv tej zaum nws yuav zoo (R tsub kom tensile) thiab tsis zoo (R nce nyob rau hauv compression). Tus nqi s rau txawv co yog hom twg los ntawm -12,6 rau + 6.

Scheme incorporating lim gauges

Ntsuas me me hluav taws xob Pib ntsais koj teeb zoo tshaj plaws kev xaiv no yog lub xam ntawm ib tug choj, lub chaw uas yog ib tug voltmeter. Qhov yooj yim piv txwv yuav tsum yog ib tug sab gauge, uas Circuit Court yog tuaj txoos ua ke nyob rau hauv lub hauv paus ntsiab lus ntawm hluav taws xob choj, uas yog kev cob cog rua nyob rau hauv ib tug caj npab. Nws kuj nyob rau hauv lub mos txwv lub xeev yog tib yam li hais tias ntawm lub lwm resistors. Nyob rau hauv cov ntaub ntawv no, tus ntaus ntawv yuav qhia ib tug pes tsawg voltage. Cov kev khiav hauj lwm hauv paus ntsiab lus ntawm lub hom gauge yog ua kom los yog yuav txo lub qhov ntau ntawm nws kuj nyob ntawm seb yuav yuam compressed los yog ncav us txog.

Cov neeg ntawm tus nyeem ntawv yog ho cuam tshuam los ntawm qhov kub thiab txias gage. Yog hais tias lub lwm sab caj npab ntawm tus choj mus rau muaj xws li ib tug uas zoo sib xws tenzosoprotivlenie uas yuav tsis tau loaded, nws yuav ua tau cov nyiaj muaj nuj nqi ntawm kub extremes.

Lub xab Circuit Court yuav tsum tau coj mus rau hauv tus account lub qhov tseem ceeb ntawm cov hluav taws xob kuj nyob ntawm tej kev cob cog rua rau lub resistor. Lawv lub hwj huam yog txo los ntawm qhov sib ntxiv ntawm lwm xyuas pib kev cob cog rua rau tej xaus lim gauge thiab voltmeter.

Thaum lub elastic neeg los lo rau hauv ob sensors li hais tias lawv load txawv nyob rau hauv kos npe rau, lub teeb liab yuav ua rau kom 2 lub sij hawm. Yog hais tias muaj plaub sensors nyob rau hauv lub Circuit Court nrog loads, xaiv los ntawm xib xub nyob rau hauv daim duab saum toj no, qhov rhiab heev tsub kom ho. Thaum txuas lub hlau los yog ntawv ci sab gauges zoo tib yam ammeter yuav ua tim khawv tsis muaj ib tug amplifier ntawm hluav taws xob Pib ntsais koj teeb. Nws yog ib qho tseem ceeb kom meej xaiv tus denomination ntawm resistances nrog ib tug multimeter li hais tias lawv yog sib npaug zos rau txhua lwm yam nyob rau hauv txhua caj npab ntawm ib tug hluav taws xob choj.

Daim ntawv thov ntawm sab gauges nyob rau hauv lub kos duab

1. Ib feem ntawm cov qauv ntawm cov tshuav nyiaj li cas: lub luj sensor lub cev yog elastically deformed, thiab nrog nws lub hom gages Document rau nws kev cob cog rua rau hauv lub Circuit Court. Cov hluav taws xob lub teeb liab yog kis tau mus rau lub xab ntsuas.
2. Xyuas ntawm kev nyuaj siab-lim lub xeev ntawm cov yam ntxwv thiab civil engineering tej yaam num thaum lub sij hawm lawv siv thiab cov lag luam.
3. Hom gauge ntsuas deformation quab yuam thaum lub sij hawm hlau txoj kev rau dov mills thiab stamping presses.
4. High-kub sensors rau metallurgical thiab lwm yam qhauj.
5. Xab sensor nrog ib tug elastic neeg ua los ntawm stainless steel rau siv nyob rau hauv ib tug sib txhoj puab heev ib puag ncig.

Standard lim gauges ua nyob rau hauv daim ntawv ntawm cov txuas, cov hlua, los yog yooj yim beams ob sab sib dho, S-puab. Rau tag nrho designs nws yog ib qho tseem ceeb uas tus quab yuam tau thov nyob rau hauv ib tug kev taw qhia: los ntawm sab saum toj mus rau nram qab los yog vice versa. Rau hauv loj heev kev khiav hauj lwm tej yam kev mob, tshwj xeeb designs ua rau nws tau los mus tshem tawm cov nyhuv uas cov cab rog. Los ntawm no mus rau ib tug loj raws li nyob ntawm seb lawv cov nqi.

Nyob rau sab gages nqi yog hom twg los ntawm pua pua mus rau pua pua txhiab tus rubles. Ntau nyob ntawm lub chaw tsim tshuaj paus, tsim, cov ntaub ntawv, raug hom kev kawm, qhov tseem ceeb ntawm lub ntsuas tsis, ntxiv hluav taws xob khoom. Rau feem ntau feem, lawv yog Cheebtsam ntawm qhov nqi koj tshuav ntawm ntau hom.

xaus

Lub hauv paus ntsiab lus ntawm cov lag luam ntawm tag nrho cov load hlwb yog raws li nyob rau hauv transformation ntawm deformation ntawm lub elastic neeg mus rau hauv ib qho hluav taws xob lub teeb liab. Rau txawv hom phiaj nws muaj nws tus kheej sensor. Thaum lim gauges xaiv, nws yog ib qho tseem ceeb los mus txiav txim seb puas muaj ib tug raug mob schemes distort readings ntawm kub thiab txhua yam cab los.