Sensor ea khatello ea PCB ke eng 'me e sebetsa joang?

Li-PCB esale li etselitsoe ho ntlafatsa ts'ebetso ea lisebelisoa tse fapaneng tsa elektroniki. Leha ho le joalo, bokhoni ba li-PCB bo ka atolosoa ka ho eketsehileng ha bo kopantsoe le li-sensor tsa khatello. Sehloohong sena, re tla hlahloba karolo ea li-sensor tsa khatello ea PCB, hore na ke eng, le hore na li sebetsa joang.

Hangata li-PCB tsa sensor ea khatello li kopanya matšoao a analog, ho jarisoa ha mechini, le ho pepesehela tikoloho, kahoo sebaka sa kutlo se lokela ho hlahlojoa ka moralo oa sebopeho sa PCB le ho sireletsoa ka leano le nepahetseng la ho koahela ha ts'ebeliso e le hloka.

Ho Utloisisa Li-Sensors tsa Khatello

Sensor ea khatello, ka tlhaloso, e etselitsoe ho bona liparamente tse fapaneng joalo ka moferefere, ho feto-fetoha ha khatello e matla, le li-pulsations, hangata libakeng tsa khatello e phahameng. Ka lebaka la bokhoni bona, li-sensor tsa khatello li fumane tsela ea tsona ho liboto tsa potoloho tse sebelisoang lits'ebetsong tsa maemo a holimo, haholo indastering e kang ea elektroniki ea likoloi.

Kameho ea Li-Sensors tsa Khatello ho Ts'ebetso ea PCB:

Kaha joale re utloisisa hore na li-sensor tsa khatello li sebetsa li ikemetseng, ha re hlahlobeng hore na li amana joang le Printed Circuit Boards (PCBs). Mosebetsi o ka sehloohong oa sensor ea khatello ka har'a boto ea potoloho ke ho sebetsa e le mochine o fetisang, ho fetola khatello e feteletseng hore e be letšoao la motlakase oa analog. Phetoho ena e thusa ho leka-lekanya ts'ebetso ea boto ea potoloho, haholo-holo ha ho tluoa tabeng ea ho lekanya ho fetoha ha khatello e nyenyane libakeng tse phahameng tsa khatello ea maikutlo.

Melawana ya Tekanyo

Ho ntlafatsa ts'ebeliso ea li-sensor tsa khatello ea PCB, ho bohlokoa ho nahana ka melao-motheo le mekhoa e fapaneng e sebelisoang ho lekanya ts'ebetso ea bona. Mekhoa e 'meli e tloaelehileng ea ho lekanya e kenyelletsa litlamorao tsa piezoresistive le capacitive, mme litlamorao tsa piezoresistive e le tsona tse tsebahalang haholo le sepheo sa sengoloa sena.

Phello ea Piezoresistive:

Phello ea piezoresistive e lekanya liphetoho tse matla mocheso oa boto ea potoloho. Leha ho le joalo, e kanna ea se be khetho e ntle ka ho fetisisa bakeng sa maemo a amanang le khatello ea maikutlo e tsitsitseng. Li-transducer tsa piezoresistive li sebelisetsoa ho sebelisa bokhoni ba piezoresistive effect le ho thusa ho fetola litefello tsa motlakase tse hlahisoang ke lisebelisoa tse itseng tse tiileng ho matla a hlokahalang.

Mefuta ea li-sensors tsa khatello ea PCB

Ho utloisisa ka botlalo bohlokoa ba li-sensor tsena, ho bohlokoa ho hlahloba mefuta e fapaneng e fumanehang. Khetho ea mofuta oa sensor e itšetlehile ka ts'ebeliso e reriloeng. Mefuta e meng e tloaelehileng ke ena:

1. Li-Sensors tsa Khatello tsa PCB tse hloahloa: Lisensara tsena li etselitsoe ho sebelisoa le Printed Circuit Boards (PCBs) tseo haholo-holo li sebelisang Surface Mount Technology (SMT) bakeng sa ho beha likarolo.
2. Li-Sensors tsa Khatello ea Sebaka se Kotsi: Tsena li etselitsoe libaka tsa PCB tse nang le likarolo tse ling tse kotsi kapa tse kotsing.
3. Li-Transducers tsa Khatello e Kopantsoeng le Mocheso: E loketse lits'ebetso kapa lisebelisoa tse hlokang litekanyo tsa khatello le mocheso, li-sensor tsena li fana ka mefuta e mengata.
4. Khatello Transducers: E shebane feela le tekanyo ea khatello, li-sensor tsena li loketse lits'ebetso moo khatello e leng parameter ea bohlokoa.
5. Khatello ea Liphetoho: Li-sensor tsena li etselitsoe ho kenya tšebetsong kapa ho koala tšebetso ho ipapisitsoe le moeli o itseng oa khatello, e leng se etsang hore li be molemo lits'ebetsong tse fapaneng tsa taolo.

Lisebelisoa tsa li-sensors tsa khatello ea PCB

Ha u khetha sensor ea khatello ea PCB, ho bohlokoa ho nahana ka ts'ebeliso e reriloeng. Le ha lits'ebetso tse tloaelehileng li kenyelletsa indasteri ea likepe le ea likoloi, li-sensor tsena li na le bohlokoa ho mafapha a mang hape. Mona ke tse ling tsa mekhoa e metle ea tšebeliso:

• Likopo tsa Bofofisi: Li-sensor tsa khatello li bapala karolo ea bohlokoa ho bofofisi bakeng sa ho metha bophahamo le lebelo la moea.
• Pneumatic le Hydraulic Systems: Li-sensor tsena li sebelisetsoa ho shebella khatello ea tsamaiso ea pneumatic le hydraulic, ho netefatsa ts'ebetso e nepahetseng.
• Li-Turbine tsa Khase: Lefapheng la matla, li-sensor tsa khatello li sebelisoa ho lekola ts'ebetso le ts'ebetso ea turbine ea khase.
• Matla a ho tuka: Li-sensor tsa khatello li thusa tlhahlobong ea mollo, ho netefatsa lits'ebetso tse sebetsang hantle le tse hloekileng tsa ho tuka.
• Ho phatloha le Ballistics: Lits'ebetsong tsa ts'ireletso, li-sensor tsena li sebelisetsoa ho shebella likhatello tsa ho phatloha le li-ballistics.
• Li-Hydro-turbines: Li-sensor tsa khatello li bapala karolo ea bohlokoa ho fehlang matla a matla a metsi, ho netefatsa phetoho e nepahetseng ea matla.

Litšobotsi tsa li-sensors tsa khatello ea PCB

Li-sensor tsa khatello ea PCB ke likarolo tse ikhethang tse nang le litšobotsi tse ikhethang tse li nolofalletsang ho sebetsa hantle ka har'a lits'ebetso tse fapaneng. Litšobotsi tsena ke tsa bohlokoa bakeng sa ts'ebetso ea bona e nepahetseng. Mona ke litšobotsi tsa mantlha tsa li-sensor tsa khatello ea PCB:

Kaho e Tiileng

Li-sensor tsa khatello ea PCB li entsoe ka moaho o thata le o tiileng. Mohaho ona o matla o etsa bonnete ba hore li-sensor tsena li ka kopanngoa ka mokhoa o se nang moeli ho liboto tsa potoloho ntle le ho senya botšepehi ba tsona. Mohaho o tiileng o matlafatsa nako ea bona ea nako e telele, e etsa hore e tšoanelehe bakeng sa ho romelloa libakeng tse hlokang, moo ho tšepahala ho leng bohlokoa.

Tekanyo e Ntle ea Khatello

E 'ngoe ea litšobotsi tsa mantlha tsa li-sensor tsa khatello ea PCB ke bokhoni ba tsona bo ikhethang ba ho lekanya khatello ka nepo. Li-sensor tsena li khona ho lemoha le ho lekanya esita le liphetoho tse nyane ka ho fetisisa khatellong, ho netefatsa ho nepahala ha litekanyo tsa tsona. Bokhoni bona bo bohlokoa haholo lits'ebetsong moo ho lekoa ka nepo khatello ea maikutlo ho leng bohlokoa. Li-sensor tsa khatello ea PCB li ipabola ho lekanya ho feto-fetoha ha khatello, ho phunya, le liphetoho tse matla tsa khatello, esita le maemong a khatello e phahameng.

Nako e Potlakileng

Nako e bohlokoa lits'ebetsong tse ngata tse sebelisang li-sensor tsa khatello ea PCB. Li-sensor tsena li fana ka linako tsa karabelo tse potlakileng, hangata li le maemong a microsecond. Nako ena ea karabelo e potlakileng e ba thusa ho tšoara le ho tlaleha phapang ea khatello ka lebelo le ikhethang le ho nepahala. Hore na e beha leihlo ho fetoha ha khatello e matla kapa ho nka data ea nako ea nnete, nako e potlakileng ea li-sensor tsa khatello ea PCB e netefatsa hore tlhaiso-leseling e bohlokoa e fumaneha hang-hang.

Ka kakaretso, li-sensor tsa khatello ea PCB li na le likarolo tse ngata tse etsang hore li sebetse hantle lits'ebetsong tse fapaneng. Kaho ea bona e tiileng e tiisa ho tšoarella, ha matla a bona a matla a ho lekanya khatello a netefatsa lintlha tse nepahetseng le tse tšepahalang. Ho phaella moo, nako ea bona e potlakileng e lumella ho shebella nako ea sebele le karabelo e potlakileng liphetohong tsa khatello. Litšobotsi tsena ka kopanelo li kenya letsoho ho tenyetseheng le ho ts'epahala ha lisensara tsa khatello ea PCB liindastering tse fapaneng le maemong a ts'ebeliso.

Melemo ea Piezoresistive Transducers

Kaha li-transducer tsa piezoresistive li etsa ts'ebetso ea li-sensor tsa khatello ea PCB, ho bohlokoa ho utloisisa melemo ea tsona:

• tenyetseha: Li-transducer tsa piezoresistive lia fetoha ebile li fumaneha ka boholo le libopeho tse sa tšoaneng, li etsa hore li tšoanelehe bakeng sa lisebelisoa tse sa tšoaneng.
• Bokhoni ba ho Iketsa: Li-transducer tsena li ka hlahisa motlakase ha li le mehloling e itseng ea matla, li felisa tlhoko ea mohloli oa matla o kantle.
• Hangata Karabo: Li-transducers tsa piezoresistive li fana ka karabelo e phahameng-frequency, e nolofalletsang liphetoho tse potlakileng tsa parameter ho li-transducers.
• phihlelleho: Li bonolo ho li tšoara ka lebaka la mefuta e mengata ea ho lekanya le litekanyo tse nyenyane.

Kamano Pakeng tsa Li-Sensors tsa Khatello ea PCB le Metal Membranes

Sebakeng sa li-sensor tsa khatello ea PCB, li-membrane tsa tšepe, haholo-holo mefuta ea tšepe e sa hloekang, li hlahile e le likarolo tsa bohlokoa tse matlafatsang ts'ebetso ea sensor haholo. Li-membrane tsena tsa tšepe li sebetsa e le li-interfaces tsa bohlokoa pakeng tsa sensor le boto ea potoloho, e leng ho nolofalletsang ts'ebetso e nepahetseng. A re ke re hlahlobeng lintho tse rarahaneng tsa kamano ena ea symbiotic.

Mekhoa ea Khokelo

Ho kopanngoa ha li-membrane tsa tšepe le Printed Circuit Boards (PCBs) ho kenyelletsa tšebeliso ea mekhoa e fapaneng ea khokahano, e 'ngoe le e' ngoe e khethoa ka hloko ho lumellana le litlhoko tse itseng. Ts'ebetso tsena tsa khokahano li bapala karolo ea bohlokoa ho netefatsa ho ts'epahala le ho hanyetsa mocheso oa kopano ea sensor ka kakaretso. Mona ke kakaretso ea mekhoa ena ea khokahano:

1. Silver Sintering: Silver sintering e sebetsa ho latela molao-motheo oa ho hasana 'me e sebelisoa ha tlhokahalo ea ho hanyetsa mocheso e phahame, e fihla ho 200˚C. Mokhoa ona o kenyelletsa ho hokahana ha lera la tšepe ho PCB. Nakong ea ts'ebetso, khatello e kholo ea ho fihla ho 40 megapascals (MPa) e sebelisoa ho lisebelisoa, ho matlafatsa mokhoa oa ho kopanya. Silver sintering e fana ka melemo e kang ho fokotsa matla a holim'a metsi 'me e sebetsa e le mokhoa o phahameng ho feta mekhoa e tloaelehileng ea ho qhibiliha e phahameng.
2. Tlamahano ea Mokhahlelo oa Liquid oa Transient (TLP).: TLP bonding e itšetlehile ka mekhoa ea ho hasana ho theha mekhahlelo ea intermetallic. E fumana ts'ebeliso ka har'a liphutheloana tsa microelectronic bakeng sa maemo a mocheso o phahameng. Se e khethollang ke sebaka se batlang se le holimo sa ho qhibiliha ha motsoako o kopanyang, ho feta mocheso oa mokhoa oa ho kopanya. Tšobotsi ena e tiisa ho tšoarella ha khokahano.
3. Motlakase Resistance Welding: Motlakase oa ho hanyetsa tjheseletsa o kenyelletsa ho kopanngoa le ho hokahanya ha likarolo tse peli tsa tšepe. Ho fihlella liphetho tse nepahetseng lits'ebetsong tsa sensor ea khatello ea PCB, ho bohlokoa ho hlophisa maemo a ts'ebetso, ho kenyelletsa nako le hona joale. Ntlafatso ena e fokotsa kotsi ea ho senya boto ea potoloho nakong ea ts'ebetso ea welding, ho netefatsa khokahano e tšepahalang.
4. Reactive Kopanyo: Ho kopanya ka mokhoa o ts'oarellang ke mokhoa o mong o sebelisetsoang ho theha kamano pakeng tsa lera la tšepe le PCB, ho laola ts'ebetso ea sensor ea khatello. Ts'ebetso ena e itšetlehile ka karabelo ea exothermal e hlahisang mocheso o hlokahalang. Hang ha mocheso o hlahisoa, tšepe ea multilayer e tsejoang e le Reactive Foil (RF) e behoa kapa e kenngoa pakeng tsa likarolo tse peli tsa solder, e leng ho nolofalletsang mokhoa oa ho kopanya.

Alternative to MEMS Pressure Sensors

Ho kopanngoa ha li-membrane tsa tšepe tse nang le lisebelisoa tsa khatello ea capacitive ho fana ka mokhoa o mong o qobellang ho sebelisoa ka mokhoa o tloaelehileng oa lisebelisoa tsa khatello ea Microelectromechanical Systems (MEMS). Le hoja li-sensor tsa MEMS li ipabola ho lekanya likhatello tse tlase le tse feletseng, li na le mefokolo, haholo-holo maemong a amanang le khatello e phahameng le likopo tse khethehileng. Mona ke kamoo li-membrane tsa tšepe tse nang le li-sensor tsa khatello ea capacitive li fanang ka mokhoa o mong o sebetsang:

1. Mehato ea Tekanyo: Li-sensor tsa khatello ea MEMS li tumme ka bokhoni ba tsona ba ho lekanya likhatello tse tlase le tse felletseng ka nepo. Leha ho le joalo, hangata ba haelloa ke ho lekanya likhatello tse phahameng. Li-membrane tsa tšepe tse nang le li-capacitive pressure sensors li tlatsa lekhalo lena ka ho ipabola lits'ebetsong tse batlang litekanyo tse nepahetseng maemong a phahameng a khatello.
2. Lisebelisoa tse khethehileng: Lisebelisoa tse ling, joalo ka tse hlokang ho pepesetsoa gel ea silicone kapa mokelikeli oa phepelo, li kanna tsa se tšoanelehe bakeng sa lisensara tsa khatello ea MEMS. Li-membrane tsa tšepe, ka moralo oa tsona o matla le ho feto-fetoha ha maemo, li fana ka tharollo e nepahetseng bakeng sa maemo a joalo a khethehileng.

Ka kakaretso, kopanyo ea lera la tšepe, haholo-holo mefuta ea tšepe e sa hloekang, le li-sensor tsa khatello ea capacitive e ntlafatsa ts'ebetso ea li-sensor tsa khatello ea PCB. Lera lena le sebetsa e le li-interface tsa bohlokoa, 'me khetho ea mokhoa oa khokahano e bapala karolo ea bohlokoa ho netefatseng ts'epo le ho hanyetsa mocheso. Ho feta moo, lera la tšepe le nang le li-sensor tsa khatello ea capacitive li fana ka mokhoa o mong o sebetsang ho feta li-sensor tsa khatello ea MEMS, haholo-holo lits'ebetsong tse kenyeletsang khatello e phahameng le maemo a itseng a tikoloho.

fihlela qeto e

Ho kopanngoa ha li-capacitive pressure sensors tse nang le li-membrane tsa tšepe ho Printed Circuit Boards (PCBs) ho fana ka melemo e mengata, ho kenyelletsa litlhoko tse nolofalitsoeng tsa bolulo le ho boloka litšenyehelo. Ho sebelisa melemo ena ka katleho le ho ntlafatsa ts'ebeliso ea li-sensor tsa khatello ea PCB maemong a khatello e phahameng le lits'ebetso, ho bohlokoa ho ba le kutloisiso e felletseng ea melao-motheo, mefuta, lits'ebetso le melemo.

Li-sensor tsa khatello ea PCB li bapala karolo ea bohlokoa indastering le lits'ebetsong tse fapaneng, moo tekanyo e nepahetseng ea ho fetoha ha khatello le liphetoho tse matla li leng bohlokoa. Kaho ea bona e tiileng, bokhoni bo babatsehang ba ho lekanya khatello, le nako e potlakileng li li etsa likarolo tsa bohlokoa bakeng sa ho hlahloba khatello ea nako ea sebele le ho fumana lintlha.

Ka ho khetha mofuta o nepahetseng oa sensor ea khatello ea PCB le ho utloisisa melao-motheo ea eona, bahlahisi le baenjiniere ba ka etsa bonnete ba hore litsamaiso tsa bona tsa elektroniki li sebetsa hantle maemong a khatello e phahameng. Ho sa tsotellehe hore na li sebelisoa ho lifofane, tsamaiso ea pneumatic le hydraulic, li-turbine tsa khase, kapa lisebelisoa tse ling, lisebelisoa tsa khatello ea PCB li fana ka ho nepahala le ho tšepahala ho hlokahalang ho finyella litekanyetso tsa indasteri le litebello tsa bareki.

Ka kakaretso, di-sensor tsa kgatello ya PCB ke dikarolo tse feto-fetohang tse ntlafatsang tshebetso le tshebetso ya ditsamaiso tsa elektroniki dibakeng tse nang le kgatello e phahameng. Bokgoni ba tsona ba ho lekanya diphetoho tsa kgatello ka nepo, hammoho le ho tshwarella ha tsona le dinako tsa karabelo e potlakileng, di di etsa disebediswa tsa bohlokwa bakeng sa baenjiniere le bahlahisi ba batlang ho fihlella ho nepahala le bokgoni dikopong tsa bona.