Kusankha Zipangizo za Ma PCB a Ultrasound a Gulu la Zachipatala
Makina ojambula zithunzi a Ultrasound amafuna kutumiza chizindikiro molondola kwambiri, kudalirika, komanso kugwirizana ndi zinthu zina. Pakati pa makinawa pali PCB, ndipo kusankha zipangizo zoyenera ndikofunikira kwambiri kuti zitsimikizire chitetezo, kulondola, komanso kugwira ntchito kwa nthawi yayitali pa ntchito zachipatala.
N’chifukwa Chiyani Kusankha Zinthu N’kofunika Kwambiri mu Ma PCB a Medical Ultrasound?
Mu ntchito zachipatala, makamaka kujambula zithunzi, ma PCB ayenera:
- Thandizani kutumiza chizindikiro cha ma frequency apamwamba (nthawi zambiri 20–100 MHz)
- Onetsetsani kuti kutentha kuli kokhazikika komanso kuti chizindikirocho chili chochepa
- Khalani ogwirizana ndi zinthu zomwe zimagwirizana ndi zinthu zachilengedwe kapena zopanda poizoni
- Sungani kukhazikika kwa mawonekedwe panthawi yoyeretsa
- Perekani kudalirika kwakukulu pazida zazing'ono zachipatala
Zipangizo Zomwe Zimagwiritsidwa Ntchito Kawirikawiri pa Ma PCB a Ultrasound Medical
1. Ma Laminate Omwe Amapangidwa ndi Ma Frequency Ambiri
- Zipangizo: Rogers RO4350B, Taconic RF-35
- Zinthu: Kutayika kochepa kwa dielectric (Df), chokhazikika cha dielectric chokhazikika (Dk)
- Ntchito: Chizindikiro cha chizindikiro mu ma board a dalaivala a transducer
2. FR-4 yokhala ndi Tg Yolimbikitsidwa
- Zipangizo: FR-4 Tg170+, S1000-2M
- Mawonekedwe: Kugwira ntchito bwino kwa kutentha, kotsika mtengo
- Ntchito: Ma module amphamvu, ma board owongolera
3. Polyimide ya Ma Flex Circuits
- Mawonekedwe: Kusinthasintha kwakukulu, kukana kutentha bwino
- Kugwiritsa ntchito: Zolumikizira za kafukufuku, zida zovalidwa za ultrasound
4. Ma Substrate a Ceramic
- Zipangizo: Al₂O₃ (aluminiyamu), AlN (aluminiyamu nitride)
- Zinthu Zake: Kutentha kwapadera, komwe kumagwiritsidwa ntchito popanga mapangidwe ang'onoang'ono amphamvu kwambiri
- Kugwiritsa ntchito: Ma ultrasound oyambilira ozindikira matenda apamwamba kwambiri
Mfundo Zofunika Zoganizira Pakupanga
- Kulamulira Kokhazikika kwa Dielectric: Chofunika kwambiri kuti tisunge liwiro la chizindikiro ndi kufananiza kwa impedance
- Kutayika kwa Tangent (Df): Lower Df imatsimikizira kuwonekera bwino kwa chizindikiro komanso kusokonekera pang'ono
- Kuyamwa kwa Chinyezi: Zipangizo zomwe zimakhala ndi chinyezi chochepa zimakana kuwonongeka panthawi yoyeretsera
- Kutsatira RoHS ndi Biocompatibility: Ayenera kukwaniritsa malamulo azachipatala monga RoHS, REACH, ndi miyezo yokhudzana ndi FDA
Kusankha zipangizo zoyenera za PCB pa zipangizo za ultrasound zachipatala si nkhani yaukadaulo chabe—ndi nkhani ya chitetezo cha wodwala komanso kulondola kwachipatala. Kugwirizana ndi wopanga PCB wodziwa bwino ntchito yake wodziwa bwino miyezo yachipatala kumatsimikizira kuti malonda anu akukwaniritsa zofunikira zonse za malamulo komanso magwiridwe antchito.
