Dab tsi yog qhov txawv ntawm ultrasonic qib ntsuas thiab radar qib ntsuas?

Qib yog ib lub hom phiaj tseem ceeb ntawm kev saib xyuas cov txheej txheem kev lag luam.Nyob rau hauv qhov kev ntsuas tsis tu ncua ntawm ntau lub tso tsheb hlau luam, silos, pas dej ua ke, thiab lwm yam, nws yog qhov nyuaj kom muaj cov cuab yeej qib uas tuaj yeem ua tau raws li txhua yam kev ua haujlwm vim tias muaj ntau yam kev ua haujlwm ntawm thaj chaw.

Ntawm lawv, radar thiab ultrasonic qib gauges tau dav siv hauv cov twj ntsuas tsis sib cuag.Yog li, dab tsi yog qhov txawv ntawm radar qib ntsuas thiab ultrasonic qib ntsuas?Lub hauv paus ntsiab lus ntawm ob hom kev ntsuas no yog dab tsi?Dab tsi yog qhov zoo ntawm radar qib ntsuas thiab ultrasonic qib ntsuas?

Ua ntej, ultrasonic qib ntsuas

Peb feem ntau hu rau lub suab nthwv dej uas muaj ntau tshaj 20kHz ultrasonic yoj, ultrasonic yoj yog ib yam ntawm cov neeg kho tshuab nthwv dej, uas yog, mechanical vibration nyob rau hauv nruab nrab elastic nyob rau hauv ib tug propagation txheej txheem, nws yog yus muaj los ntawm high zaus, luv wavelength, me me. diffraction phenomenon, thiab zoo directivity, yuav ua tau ib tug ray thiab directional propagation.

Ultrasonic attenuation nyob rau hauv cov kua thiab cov khib nyiab yog me me, yog li lub peev xwm nkag tau muaj zog, tshwj xeeb tshaj yog nyob rau hauv lub teeb opaque khib nyiab, ultrasonic tuaj yeem nkag mus rau kaum ntawm meters ntev, ntsib impurities lossis cuam tshuam yuav muaj kev cuam tshuam tseem ceeb, ntsuas qib ultrasonic yog siv nws. qhov no feature.

Hauv kev tshawb nrhiav ultrasonic, tsis muaj teeb meem dab tsi ntawm cov cuab yeej ultrasonic, nws yog ib qho tsim nyog los hloov hluav taws xob hluav taws xob rau hauv ultrasonic emission, thiab tom qab ntawd tau txais rov qab rau hauv hluav taws xob teeb liab, lub cuab yeej ua kom tiav cov haujlwm no yog hu ua ultrasonic transducer, los yog kev sojntsuam.

Thaum ua hauj lwm, lub ultrasonic transducer yog muab tso rau saum cov khoom ntsuas thiab emits ultrasonic yoj downward.Lub ultrasonic nthwv dej dhau los ntawm huab cua nruab nrab, yog rov qab los thaum nws ua tau raws li qhov saum npoo ntawm cov khoom ntsuas, thiab tau txais los ntawm transducer thiab hloov mus rau hauv lub teeb liab hluav taws xob.Tom qab kuaj pom cov teeb liab no, qhov ntsuas hluav taws xob hauv hluav taws xob hloov pauv mus rau theem teeb liab rau kev tso tawm thiab tso tawm.

Ob, radar qib meter

Kev khiav hauj lwm hom ntawm radar qib meter yog tib yam li ntawm ultrasonic qib ntsuas, thiab radar qib ntsuas kuj tseem siv cov kis - xav txog - tau txais kev ua haujlwm.Qhov txawv yog tias qhov ntsuas ntawm lub radar ultrasonic qib meter feem ntau yog nyob ntawm ultrasonic transducer, thaum lub radar qib ntsuas cia siab rau lub taub hau siab thiab lub kav hlau txais xov.

Ultrasonic qib ntsuas siv tshuab tsis siv neeg, thaum radar qib ntsuas siv ultra-siab zaus (ntau G txog kaum ntawm G Hertz) electromagnetic tsis.Electromagnetic nthwv dej taug kev ntawm lub teeb nrawm, thiab lub sijhawm taug kev tuaj yeem hloov pauv mus rau theem teeb liab los ntawm cov khoom siv hluav taws xob.

Lwm hom radar qib meter yog ib qho kev qhia wave radar qib ntsuas.

Coj wave radar level meter yog radar theem ntsuas raws li lub sij hawm sau reflectometry (TDR) txoj cai.Lub electromagnetic pulse ntawm radar qib meter propagates raws steel cable los yog sojntsuam ntawm qhov ceev ntawm lub teeb.Thaum nws ntsib qhov chaw ntawm qhov ntsuas nruab nrab, ib feem ntawm cov mem tes ntawm lub ntsuas hluav taws xob radar qib tau cuam tshuam los ua ib qho ncha thiab rov qab mus rau lub pulse launching ntaus ntawv raws tib txoj kev.Qhov kev ncua deb ntawm lub transmitter thiab ntsuas nruab nrab saum npoo yog proportional rau lub sij hawm propagation ntawm lub mem tes thaum lub sij hawm cov kua theem siab yog xam.

Thib peb, qhov zoo thiab qhov tsis zoo ntawm radar thiab ultrasonic qib ntsuas

1. Ultrasonic qhov tseeb tsis zoo li radar;

2. Vim muaj kev sib raug zoo ntawm zaus thiab kav hlau txais xov loj, radar qib meter nrog ntau zaus yog me dua thiab yooj yim rau nruab;

3. Vim tias radar zaus ntau dua, lub wavelength luv dua, thiab muaj kev xav zoo dua ntawm cov khoom tilted;

4. Radar ntsuas qhov muag tsis pom thaj tsam me dua li ultrasonic;

5. Vim lub radar zaus ntau dua, lub radar beam lub kaum sab xis yog me me, lub zog yog concentrated, thiab lub peev xwm ncha tau txhim kho thaum nws yog qhov tsim nyog kom tsis txhob cuam tshuam;

6. Piv nrog ultrasonic qib ntsuas siv cov tshuab tsis muaj zog, radar yeej tsis cuam tshuam los ntawm lub tshuab nqus tsev, dej vapor hauv huab cua, plua plav (tshwj tsis yog graphite, ferroalloy thiab lwm yam siab dielectric plua plav), kub thiab siab hloov;