Kodi zotsatira za Doppler mu ultrasound flow meter ndi ziti?

Doppler effect mu ultrasound flow meter ndi chinthu chomwe ma frequency a ultrasound signal amasintha chifukwa cha kuyenda kwa tinthu tating'onoting'ono kapena madzi omwe ali mkati mwa chitoliro. Kusintha kumeneku kwa ma frequency kumagwiritsidwa ntchito kudziwa liwiro la madzi, ndipo kuchokera pamenepo, kuchuluka kwa madzi kumatha kuwerengedwa.

Mfundo Yogwirira Ntchito ya Doppler Effect mu Ultrasonic Flow Meters:

Mu ultrasound flow meter pogwiritsa ntchito Doppler effect, dongosololi limagwira ntchito motere:

Kutumiza kwa Mafunde a Ultrasonic: Choyezera kayendedwe ka madzi chimatumiza mafunde a ultrasound mu madzi kudzera mu transducer.

Kuwunikira kuchokera ku Tinthu Tating'onoting'ono: Nthawi zambiri, madziwo si oyera koma amakhala ndi tinthu tomwe timayimitsidwa, thovu, kapena zinthu zina zosagwirizana. Mafunde a ultrasound akagunda tinthu tomwe timayenda kapena thovu, amabwereranso ku transducer.

Kusintha kwa Mafupipafupi: Kuyenda kwa tinthu timeneti kumapangitsa kuti mafupipafupi a mafunde owonetsedwa ndi ma ultrasound asinthe:

Ngati madzi akuyenda kupita ku transducer, ma frequency owonetsedwa adzakhala okwera (positive Doppler shift).

Ngati madzi akutuluka kuchokera ku transducer, ma frequency owonetsedwa adzakhala otsika (negative Doppler shift).

Kuwerengera Kusintha kwa Mafupipafupi: Kuchuluka kwa kusintha kwa mafupipafupi kumagwirizana mwachindunji ndi liwiro la madzi. Madzi akamayenda mofulumira, kusintha kwa mafupipafupi kumakulirakulira.

Kuwerengera Kuchuluka kwa Mayendedwe: Poyesa kusintha kwa Doppler ndikudziwa makhalidwe a madzi ndi mawonekedwe a chitoliro, choyezera kuyenda kwa madzi chingathe kuwerengera liwiro la madzi. Kuchuluka kwa kuyenda kwa madzi kumatha kupezeka mwa kuchulukitsa liwiro la madzi ndi dera lopingasa la chitolirocho.

Zinthu Zomwe ZimakhudzaZotsatira za Doppler mu Ultrasonic Flow Meters:

Kuchuluka kwa Tinthu: Zotsatira za Doppler zimadalira kukhalapo kwa tinthu (kapena thovu) mkati mwa madzi. Ngati madziwo ndi oyera kwambiri kapena alibe zinthu zolimba zoyimitsidwa, mafunde a ultrasound sangawonekere mokwanira, zomwe zimapangitsa kuti muyeso ukhale wolakwika kapena wosagwira ntchito.

Kukula kwa Tinthu: Tinthu tating'onoting'ono kapena thovu lalikulu limawonetsa mafunde a ultrasonic bwino kwambiri, zomwe zimapangitsa kuti Doppler shift ikhale yosavuta kuzindikira. Tinthu tating'onoting'ono sitingapange chiwonetsero champhamvu chokwanira kuti chizindikirike ndi makina.

Mbiri ya Mayendedwe: Mbiri ya mayendedwe (yogwedezeka kapena yopingasa) ingakhudze kulondola kwa muyeso wa Doppler. Kawirikawiri, ma Doppler mita ndi oyenera kwambiri pakuyenda kosasunthika, komwe tinthu timene timayenda mwachisawawa komanso mosokonezeka.

Kapangidwe ka Madzi: Liwiro la phokoso m'madzi limakhudza kusintha kwa Doppler. Chida choyezera chingafunike kuyesedwa kuti chigwirizane ndi mitundu ina ya madzi, chifukwa liwiro la phokoso limasiyana malinga ndi kuchuluka kwa madziwo, kutentha, ndi kapangidwe kake.

Mitundu yaMa Doppler Ultrasonic Flow Meters:

Mamita Oyendera Ma Doppler Okhala ndi Clamp-On: Mamita awa safuna kudula chitolirocho. Amamangirira kunja kwa chitolirocho ndipo amayesa kusintha kwa mafunde a ultrasound pamene akudutsa mumadzimadzi.

Mamita Oyendera Doppler Okhala M'mizere: Mamita awa amaikidwa mwachindunji mu payipi, komwe masensa a ultrasound amatumiza ndikulandira mafunde amawu kuchokera mkati mwa madzi.