Mawu Oyamba
Pankhani yaukadaulo wamakono wozindikira, ma sensor a piezoresistive pressure amadziwikiratu chifukwa cholondola, kudalirika, komanso kusinthasintha. Masensawa amagwiritsa ntchito piezoresistive zotsatira kuyeza kusintha kwa kuthamanga ndikuchita gawo lofunikira pakugwiritsa ntchito mitundu ingapo kuyambira makina opanga mafakitale mpaka kuyang'anira zamankhwala. Nkhaniyi ikufotokoza zofunikira za piezoresistive pressure sensors, kuphatikizapo mfundo zake, mitundu, ntchito, ubwino, ndi malingaliro oti agwiritse ntchito.
Kumvetsetsa Piezoresistive Pressure Sensors
Mfundo ya Piezoresistance
Mphamvu ya piezoresistive ndizochitika zakuthupi pomwe kukana kwamagetsi kwa chinthu kumasintha chifukwa cha kupsinjika kwamakina. Izi zimagwiritsidwa ntchito kwambiri m'masensa osiyanasiyana, monga ma sensor amphamvu, ma accelerometers, masensa akukakamiza, ndi masensa a torque, omwe amagwira ntchito potembenuza kuchuluka kwa thupi kukhala ma siginecha amagetsi. Amathandizira kukhudzika kwakukulu, kuchuluka kwa miyeso, kuyankha mwachangu pafupipafupi, komanso zabwino zamapangidwe osavuta komanso mtengo wotsika wa piezoresistive effect.
Zigawo ndi Zida
Piezoresistive pressure sensors imagwira ntchito makamaka kudzera m'chigawo chawo chachikulu, nembanemba kapena diaphragm yopangidwa kuchokera ku zinthu monga silicon crystal, polysilicon, kapena mafilimu achitsulo. Pamene nembanemba deforms pansi pa kupsyinjika, chifukwa mawotchi kupsyinjika amasintha kukana magetsi ake, akatembenuka kuthamanga kusintha mu zizindikiro magetsi. Kusankhidwa kwa zinthu ndi kapangidwe ka nembanemba, kuphatikiza mawonekedwe ake, makulidwe ake, ndi kapangidwe kake, zimakhudza kwambiri chidwi cha sensa, kuchuluka kwa kuyeza, mawonekedwe a kutentha, mzere, komanso kukhazikika.
Single-crystal silicon imagwiritsidwa ntchito kwambiri chifukwa cha piezoresistive coefficient ndi sensitivity, ngakhale kuti kutentha kwake kumakhudzidwa kwambiri; mafilimu a polysilicon ndi zitsulo amasankhidwa chifukwa cha kutentha kwawo kochepa kapena kukhazikika bwino komanso kukana dzimbiri. Kukhathamiritsa magwiridwe antchito kumadaliranso kapangidwe ka dera la Wheatstone bridge ndi kugwiritsa ntchito matekinoloje olipira, monga kubweza kutentha ndi kuwongolera ziro-point, kuti muchepetse kusiyanasiyana kwa kutentha ndi kutsetsereka kwa zero-point, motero kumakulitsa kulondola ndi kukhazikika kwa miyeso. .
Mitundu ya Piezoresistive Sensors
Ma sensor a piezoresistive pressure amagawidwa mumtheradi, geji, ndi mitundu yosiyanasiyana kutengera momwe amayezera. Masensa amtheradi amphamvu amagwiritsidwa ntchito kuyeza kupanikizika kofanana ndi vacuum yabwino, yoyenera ma vacuum systems ndi meteorological miyeso, yomwe imadziwika ndi mawonekedwe awo achipinda chosindikizidwa komanso miyeso yayikulu. Masensa amphamvu a gauge amayezera kupsinjika kwa mlengalenga, komwe kumagwiritsidwa ntchito mu ma hydraulic ndi pneumatic system, omwe amadziwika ndi mawonekedwe ake osavuta komanso otsika mtengo. Masensa osiyanasiyana amayesa kusiyana pakati pa magwero awiri okakamiza, omwe amagwiritsidwa ntchito kwambiri mumayendedwe oyenda ndi mulingo, ndipo amadziwika kuti ali olondola kwambiri koma mawonekedwe ovuta kwambiri.
Kusankha piezoresistive pressure sensor yoyenera kumaphatikizapo kuganizira momwe ntchito ikugwiritsidwira ntchito ndi zosowa zoyezera, kumene masensa amtheradi amapereka kulondola kwakukulu koma pamtengo wapamwamba, zowunikira zowunikira zimakhala zotsika mtengo koma zokhala ndi miyeso yochepa, ndipo zosiyanitsa zosiyana sizimakhudzidwa ndi kupanikizika kwa mlengalenga koma zimabwera. mtengo wokwera. Kuphatikiza apo, msika umapereka masensa apadera omwe amapangidwira zosowa zenizeni, monga masensa ang'onoang'ono, ma sensor otenthetsera kutentha kwambiri, komanso ma sensors olimbana ndi kutu, iliyonse imayang'ana malo ndi miyeso yosiyanasiyana.
Mfundo Yogwira Ntchito ya Piezoresistive Pressure Sensors
Sayansi Pambuyo pa Piezoresistance
Piezoresistive pressure sensors imagwira ntchito potengera mphamvu ya piezoresistive, pomwe mphamvu yamagetsi ya chinthu imasintha ndi kupsinjika kwamakina. Kupanikizika kumagwiritsidwa ntchito pa nembanemba kapena diaphragm, zomwe zimapangitsa kuti zisokonezeke ndikupanga kupsinjika kwa makina, kupsinjika kumeneku kumasintha mphamvu yamagetsi ya nembanembayo. Sensa imatembenuza kusinthaku kukana kukhala chizindikiro chamagetsi kudzera pabwalo la mlatho wa Wheatstone, womwe, pambuyo pakukulitsa ndi kusefa, umasinthidwa kukhala mtengo wowerengeka. Njirayi imaphatikizapo kusintha kwa mawonekedwe a kristalo, komwe kupsinjika kwa makina kumakhudza kuyenda kwa ma elekitironi ndi ndende yonyamulira, zomwe zimapangitsa kusintha kukana.
Zinthu zingapo zimakhudza magwiridwe antchito a piezoresistive pressure sensors, kuphatikiza kuchuluka kwa zinthu za piezoresistive, kutentha kokwanira, kukhazikika, mawonekedwe a nembanemba, makulidwe, kapangidwe kake, kapangidwe kake ka mlatho wa Wheatstone komanso kugwiritsa ntchito matekinoloje olipira monga kubwezera kutentha ndi zero- kulinganiza mfundo. Piezoresistive coefficient ndi gawo lofunikira lomwe likuwonetsa mphamvu ya piezoresistive ya zinthu, pomwe mlatho wa Wheatstone ndi gawo lofunikira pakusinthiratu kusintha kwamphamvu kukhala ma siginecha amagetsi, kuwongolera kulondola komanso kukhazikika kwa miyeso.
Kugwiritsa Ntchito Piezoresistive Pressure Sensors
Ma sensor a piezoresistive pressure sensors amagwiritsidwa ntchito kwambiri m'magawo osiyanasiyana monga kuwongolera mafakitale, zida zamankhwala, zamagetsi zamagalimoto, ndi zakuthambo chifukwa cha kukhudzika kwawo kwakukulu, kuchuluka kwa miyeso, kuyankha mwachangu, mawonekedwe osavuta, komanso mtengo wotsika. Masensa awa amawunika kupanikizika kwa ma hydraulic ndi pneumatic system m'makampani opanga, kuyeza torque ndi kukakamiza kwa maloboti, ndikuwonetsetsa chitetezo ndi magwiridwe antchito amakampani amafuta, mphamvu, ndi zitsulo.
M'zachipatala, ma sensor a piezoresistive pressure sensors amagwiritsidwa ntchito kuwunika zofunikira monga kuthamanga kwa magazi, kuthamanga kwa magazi, komanso kupuma, kupereka chithandizo chofunikira chaukadaulo pozindikira kuthamanga kwa ventricular, kuthamanga kwa intracranial, komanso kuthamanga kwa maso. Amagwiranso ntchito pazamankhwala ovala bwino poyang'anira zochitika zolimbitsa thupi komanso kugona bwino. M’makampani opanga magalimoto, masensa ameneŵa amayesa kuthamanga kwa matayala, kuthamanga kwa injini, ndi mphamvu ya mafuta, pamene mumlengalenga, amathandiza kuyeza kolondola kwa kutalika kwa ndege, kuthamanga kwa ndege, ndi kuthamanga kwa injini.
Kupitilira maderawa, masensa a piezoresistive pressure sensor amakhalanso ndi gawo lofunikira pakuwunika zachilengedwe komanso kafukufuku wasayansi, kuyeza kuthamanga kwa mlengalenga, kuchuluka kwa madzi, komanso liwiro la mphepo, ndikupereka chidziwitso cholondola pamakina azinthu ndi maphunziro amphamvu yamadzimadzi. Kugwiritsiridwa ntchito kosiyanasiyana kwa masensa awa kumawunikira malo awo ofunikira muukadaulo wamakono ndi chitukuko cha mafakitale, zomwe zimawapangitsa kukhala ukadaulo wofunikira kwambiri pakuwunika bwino, kuyang'anira ndikuwongolera.
Ubwino wa Piezoresistive Pressure Sensors
Piezoresistive pressure sensors, yokhala ndi chidwi chachikulu komanso kulondola, magwiridwe antchito ambiri komanso kuchuluka kwa miyeso, mawonekedwe osavuta komanso otsika mtengo, amagwira ntchito yofunika kwambiri m'magawo osiyanasiyana. Masensawa amatha kuzindikira kusintha kwakung'ono kwambiri kwa kuthamanga, kuwapanga kukhala oyenera kuyeza molondola kwambiri, monga kuyang'anira kuthamanga kwa magazi ndi kutuluka kwa magazi pakuwunika zamankhwala. Atha kupangidwanso kuti akwaniritse zosowa zamitundu yosiyanasiyana yoponderezedwa kuyambira ma pascal ang'onoang'ono mpaka ma megapascals, kuwonetsa kugwiritsidwa ntchito kwawo kwakukulu pamakina owongolera mafakitale, zamagetsi zamagalimoto, zakuthambo, ndi madera ena.
Njira yopanga piezoresistive pressure sensors ndi yosavuta komanso yotsika mtengo, yophatikizidwa ndi kukula kwake kophatikizika, kuyankha mwachangu pafupipafupi, kukhazikika kwanthawi yayitali, komanso mphamvu zotsutsana ndi zosokoneza, zomwe zimapangitsa kuti zikhale zosavuta kuzisunga ndikusintha, pomwe zili zoyenera kuyeza mwamphamvu komanso zovuta. kuyang'anira kuthamanga kwa chilengedwe. Makhalidwewa samangochepetsa ndalama zonse zogwirira ntchito komanso amaonetsetsa kuti dongosololi likuyenda bwino komanso lodalirika.
Zolepheretsa ndi Zolingaliridwa
Ngakhale ma sensor a piezoresistive pressure sensors amagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana chifukwa cha kukhudzidwa kwawo kwakukulu, kuchuluka kwa kuyeza, mawonekedwe osavuta, komanso kugwiritsa ntchito bwino ndalama, kugwiritsa ntchito kwawo kumabweranso ndi zolephera zingapo zomwe ziyenera kuganiziridwa pakugwiritsa ntchito. Zinthu zachilengedwe monga kutentha, chinyezi, ndi kugwedezeka zimakhudza kwambiri magwiridwe antchito a sensa, zomwe zitha kubweretsa kusintha kwa chidwi, kutsika kwa zero, ndikuchepetsa kulondola kwa muyeso. Kuphatikiza apo, kukhudzidwa kwakukulu kwa masensa a piezoresistive, ngakhale kuwapangitsa kuzindikira kusintha kwa mphindi zochepa, kumapangitsanso kuti azitha kusokoneza phokoso.
Kuti athane ndi zovutazi, kugwiritsa ntchito njira zoyenera zolipirira kutentha, njira zopewera kugwedezeka, komanso kuwongolera nthawi zonse kumatha kupititsa patsogolo kulondola kwa kuyeza komanso kukhazikika kwa masensa. Ngakhale masensa amphamvu a piezoresistive ali ndi malire ena pamiyezo ndi kutengera kwa media, kusankha mtundu woyenera wa sensa ndi chitsanzo ndikupanga masensa am'malo ogwiritsira ntchito kungathe kuchepetsa malirewa. Kuphatikiza apo, ngakhale masensa apamwamba kwambiri a piezoresistive pressure ndi okwera mtengo, kuyika ndalama mu masensa oyenera ndikutengera njira zofananirako kumatha kupititsa patsogolo magwiridwe antchito komanso kudalirika kwadongosolo pakapita nthawi.
Mwachidule, ngakhale pali zolephera zina, masensa a piezoresistive pressure amatha kukulitsa ubwino wawo ndikukwaniritsa zofunikira za mapulogalamu osiyanasiyana ovuta kupyolera mu kusankha koyenera komanso kugwiritsira ntchito moyenera. Izi zimafuna kuti ogwiritsa ntchito aganizire mozama magawo ofunikira monga momwe chilengedwe chimakhalira, kuchuluka kwa miyeso, komanso kuyanjana ndi media panthawi yosankha ndikugwiritsa ntchito, ndikutengera njira zofananira kuti zitsimikizire kulondola komanso kukhazikika kwa masensa.
Zatsopano mu Piezoresistive Pressure Sensing Technology
Kupita patsogolo kwa Zipangizo ndi Zamakono
Kupita patsogolo kosalekeza kwa sayansi ndi umisiri wakuthupi kukusinthiratu kakulidwe ka masensa amphamvu a piezoresistive, omwe amawonekera makamaka pakupanga zida zatsopano za piezoresistive, kugwiritsa ntchito ukadaulo wa microfabrication, kuphatikiza kwa chipukuta misozi ndi umisiri wopanda zingwe, ndikuphatikiza umisiri wanzeru. Zida zatsopano za piezoresistive monga nanomaterials ndi semiconductor zipangizo sizimangopereka ma coefficients apamwamba a piezoresistive ndi kutentha kwapansi komanso kutentha kwapansi komanso kumapangitsanso kukhazikika kwa sensa, kupititsa patsogolo kwambiri kukhudzidwa kwa sensa ndi kulondola.
Kugwiritsa ntchito ukadaulo wa microfabrication kumathandizira kupanga zazing'ono, zowongolera zowongolera bwino kwambiri, kuchepetsa mtengo ndikuwonjezera magwiridwe antchito, zomwe zimapangitsa kuti masensa azitha kutumizidwa mumitundu yambiri yogwiritsira ntchito. Kuphatikiza apo, matekinoloje apamwamba a chipukuta misozi monga chipukuta misozi ndi ziro-point drift kupititsa patsogolo kulondola komanso kukhazikika kwamiyeso. Kuphatikiza kwaukadaulo wopanda zingwe kumapangitsanso kufalitsa kwa data kukhala kosavuta, kumathandizira kwambiri kusinthasintha kwa kukhazikitsa ndi kugwiritsa ntchito ndikuwongolera chitetezo chadongosolo.
Tsogolo la Tsogolo la Pressure Sensing Technology
Ukadaulo wanzeru, kuphatikiza ukadaulo wozindikira, ukadaulo wa microelectronics, ndi ukadaulo wamakompyuta, ukuyendetsa masensa a piezoresistive kupititsa patsogolo chitukuko chanzeru. Izi sizimangozindikira kuyeza kwanzeru, kusanthula deta, ndi ntchito zowunikira zolakwika komanso zimakulitsa kwambiri mphamvu komanso kufunika kwa masensa pazogwiritsa ntchito. Mwachitsanzo, kugwiritsa ntchito nanomaterials kwambiri bwino tilinazo ndi muyeso osiyanasiyana, MEMS luso amazindikira kachipangizo miniaturization ndi kuchepetsa mtengo, digito chizindikiro processing luso kwambiri timapitiriza muyeso kulondola ndi bata, ndi opanda zingwe sensing luso amapereka mwayi kufala opanda zingwe deta kwa masensa. Kupita patsogolo kumeneku pamodzi kumalimbikitsa chitukuko chofulumira ndi kufalikira kwa ntchito za teknoloji ya piezoresistive pressure sensor.
Kusankha Sensor Yoyenera ya Piezoresistive Pressure
Zosankha Zosankha
Posankha piezoresistive pressure sensor, zinthu zazikulu monga kuchuluka kwa kuyeza, kukhudzidwa, komanso momwe chilengedwe chilili ndizofunikira. Kuwonetsetsa kuti muyeso wa sensa yosankhidwayo ukuphimba kuchuluka kwa kuthamanga kofunikira ndikofunikira kuti tipewe kupitilira malire ake ndikuyambitsa zolakwika muyeso. Sensitivity ndi chinthu china chotsimikizika, chomwe chimakhudza mwachindunji kulondola kwa kuyeza; Chifukwa chake, kusankha sensor yokhala ndi chidwi choyenerera pazofunikira zolondola za pulogalamuyo ndikofunikira. Kuphatikiza apo, zinthu zachilengedwe monga kutentha, chinyezi, ndi kugwedezeka zimatha kukhudzanso magwiridwe antchito a sensa, zomwe zimapangitsa kuti pakhale kofunikira kusankha masensa omwe angagwirizane ndi momwe chilengedwe chimagwirira ntchito.
Kusankha piezoresistive pressure sensor yoyenera ntchito inayake kumafunanso kuganizira zinthu zina monga kukula, kulemera, ndi mtengo. Mwachitsanzo, ntchito zoyang'anira mafakitale nthawi zambiri zimafunikira masensa okhala ndi mitundu ingapo yoyezera, kukhudzika kwakukulu, komanso kuthekera kolimbana ndi kusokoneza, pomwe zida zamankhwala zimayika patsogolo kulondola kwa muyeso, kukhazikika kwabwino, komanso kuyanjana kwabwino kwambiri. Zomverera za gawo la zamagetsi zamagalimoto ziyenera kukhala zophatikizika, zopepuka, zopirira kutentha kwambiri, komanso zosagwira kugwedezeka, pomwe masensa a gawo lazamlengalenga amafunikira kulondola kwambiri, kukhazikika, komanso kukana ma radiation. Chifukwa chake, kumvetsetsa ndikuwunika zofunikira za pulogalamu iliyonse ndikusankha mtundu woyenera kwambiri wa piezoresistive pressure sensor model ndikofunikira kuti muwonetsetse kuti magwiridwe antchito adongosolo komanso kudalirika kwanthawi yayitali.
Nthawi yotumiza: Mar-12-2024