Chav kawm kub hauv cov ntsuas dej ultrasonic yog qhov tseem ceeb ntsuas lawv lub peev xwm los hloov kho rau qhov kub nruab nrab thiab qhov kub ib puag ncig, txhais qhov ntau thiab tsawg kub rau kev ua haujlwm ib txwm thiab kev ua haujlwm zoo. Cov lus piav qhia ntxaws ntxaws hauv qab no suav nrog cov lus txhais, cov ntsiab lus tseem ceeb, cov xwm txheej siv, thiab cov qauv cuam tshuam:
I. Lub Ntsiab Lus Txhais ntawm Chav Kawm Kub
Cov chav kawm kub ntawm lub ntsuas dej ultrasonic feem ntau yog cim los ntawm "T + tus lej" (piv txwv li, T50, T90) lossis qhov kub thiab txias (piv txwv li, 0.1–50 ° C), uas txhais tau tias:
- Qhov kub siab tshaj plaws ua haujlwm: Qhov txwv siab tshaj plaws ntawm qhov kub nruab nrab uas lub 'meter' tuaj yeem ua haujlwm ruaj khov mus ntev (tus lej sawv cev rau °C);
- Qhov ntau yam kev hloov pauv kub: Qee cov lus qhia kuj sau tseg qhov txwv qis dua (piv txwv li, T50 sib raug rau 4 ° C–50 ° C) kom tiv thaiv kev khov lossis cov khoom tawg hauv qhov chaw kub qis.
II. Kev Cuam Tshuam ntawm Chav Kawm Kub rau Cov Ntsuas Ultrasonic
1. Cov teebmeem ntawm kev ntsuas qhov tseeb
- Lub tshuab ntsuas qhov ceev ntawm lub suab: Cov ntsuas ultrasonic xam qhov ntws los ntawm kev ntsuas lub sijhawm ntawm lub suab nthwv dej, thiab qhov ceev ntawm lub suab sib raug zoo nrog qhov kub thiab txias (piv txwv li, qhov ceev ntawm lub suab nce ~ 4% rau txhua qhov kub ntawm dej nce 10 ° C). Chav kawm kub txhais qhov ntau ntawm cov qauv them nqi ntawm lub suab uas twb muaj lawm; kev tshaj qhov kub siab tshaj plaws ua rau cov algorithm tsis ua haujlwm, ua rau muaj qhov yuam kev ntau ntxiv (piv txwv li, lub ntsuas T50 yuav pom qhov yuam kev nthuav dav ntawm ± 1% mus rau > ± 3% ntawm 60 ° C).
- Kev ruaj khov ntawm lub sensor: Cov khoom siv Piezoelectric (piv txwv li, PZT) hauv cov transducers ultrasonic muaj kev hloov pauv zaus ntawm qhov kub siab, txo qhov rhiab heev ntawm kev txais cov teeb liab thiab txawm tias ua rau lub zog ultrasonic tsis ua haujlwm.
2. Cov teebmeem rau kev siv khoom siv ntev
- Cov khoom siv hluav taws xob: Qhov kub thiab txias uas ntsuas rau cov motherboard chips, capacitors, thiab lwm yam, feem ntau yog -20°C–70°C. Kev ua kom dhau qhov kub thiab txias (piv txwv li, T50) tsis ua rau puas tsuaj tam sim ntawd tab sis ua rau kev laus sai dua (piv txwv li, capacitor electrolyte evaporation), ua rau lub neej ua haujlwm luv dua (piv txwv li, lub neej 5 xyoos ib txwm yuav txo qis mus rau 2 xyoos ntawm 60°C).
- Cov khoom siv kho tshuab: Qhov kub siab ua rau lub 'meter' lub tsev thiab cov foob (piv txwv li, roj hmab EPDM) mos lossis tawv, txo qib kev tiv thaiv (IP68) thiab muaj kev pheej hmoo ntawm dej/cua xau.
3. Cov Kev Cai rau Kev Teeb tsa Ib puag ncig
- Qhov kub nruab nrab sib phim: T50 meters haum rau dej txias lossis cov kua dej kub qis (piv txwv li, dej hauv tsev, dej txias). Rau kev ua kom dej kub (≥60 ° C), xaiv T90 lossis cov ntsuas dej kub siab dua.
- Cov kev txwv kub ib puag ncig: Tshaj qhov kub nruab nrab, qhov kub ib puag ncig ntau dhau (piv txwv li, cov kav dej sab nraum zoov uas muaj hnub ci) yuav ua rau qhov kub sab hauv ntawm lub ntsuas kub siab dua qhov txwv chav kawm, xav tau cov ntaub thaiv hnub lossis cov khoom rwb thaiv tshav kub.
Lub sijhawm tshaj tawm: Lub Rau Hli-13-2025