Ho tloha liketaneng tsa liroboto ho ea ho mabanta a li-conveyor ts'ebetsong ea phepelo ea thepa ho ea ho litora tsa turbine tsa moea, ho lemoha boemo ke ntho e mahlonoko ka mefuta e mengata ea likopo.E ka nka mefuta e mengata, ho kenyelletsa linear, rotary, angular, absolute, incremental, contact and non-contact sensors ductive, eddy current, capacitive, magnetostrictive, Hall effect, fiber optic, optical le ultrasonic.
FAQ ena e fana ka kenyelletso e khuts'oane ea mefuta e fapaneng ea ho lemoha maemo, ebe e hlahloba mefuta e mengata ea theknoloji eo baqapi ba ka khethang ho eona ha ba kenya tšebetsong tharollo ea boemo.
Li-sensors tsa boemo ba Potentiometric ke lisebelisoa tse thehiloeng ho hanyetsa tse kopanyang pina e tsitsitseng ea ho hanyetsa e nang le sesepa se khomaretsoeng nthong eo boemo ba eona bo hlokang ho utloahala.Motsamao oa ntho o tsamaisa li-wipers haufi le pina.Boemo ba ntho e lekanyetsoa ka ho sebelisa marang-rang a divider ea voltage e entsoeng ka liporo le li-wipers ho lekanya motsamao oa linear kapa oa rotational ka motlakase o tsitsitseng oa DC (Figuntiura 1, 1, 2006, 1, 2006, 1, 2009)
Li-sensor tsa boemo ba inductive li sebelisa liphetoho tsa matla a khoheli a kentsoeng ka har'a coil ea sensor. Ho latela sebopeho sa bona, li ka lekanya boemo ba linear kapa bo potolohang.Linear Variable Differential Transformer (LVDT) boemo ba li-sensor li sebelisa likhoele tse tharo tse phuthetsoeng ka har'a tube e sekoti;khoele ea mantlha le likhoele tse peli tsa bobeli boemo ba sehlomo le hore na se khomaretsoe ho eng se ka khethoa.A rotating voltage differential transformer (RVDT) e sebelisa mokhoa o ts'oanang ho latela boemo bo potolohang. Li-sensor tsa LVDT le RVDT li fana ka ho nepahala ho hotle, linearity, resolution le kutlo e phahameng.Ha li khohlane 'me li ka tiisoa hore li sebelisoe libakeng tse thata.
Eddy current position sensors work with conductive objects e hlahisoang ke maqhubu a eddy, a amang phepelo ea coil.Ha ntho e ntse e atamela haufi le coil, tahlehelo ea hona joale ea eddy e ntse e eketseha 'me motlakase oa oscillating o fetoha o monyenyane (Figure 2) .The oscillating voltage e lokisoa le ho sebetsoa ke potoloho ea linearizer ho hlahisa tlhahiso ea DC e lekanang le sebaka sa ntho.
Lisebelisoa tsa hona joale tsa Eddy ke lisebelisoa tse matsutla-tsutla, tse sa amaneng le batho bao hangata li sebelisoang e le li-proximity sensors. Li na le li-omnidirectional 'me li khona ho tseba sebaka se lekanyelitsoeng ho ntho, empa eseng sebaka kapa sebaka se felletseng sa ntho.
Joalo ka ha lebitso le bontša, li-capacitive position sensors li lekanya liphetoho tsa bokhoni ba ho tseba hore na ntho e utloiloeng e eme hokae. Li-sensor tsena tse sa amaneng li ka sebelisoa ho lekanya boemo ba linear kapa rotational. Li na le lipoleiti tse peli tse arohaneng ka thepa ea dielectric 'me li sebelisa o mong oa mekhoa e' meli ho lemoha boemo ba ntho:
E le ho etsa hore ho be le phetoho ea kamehla ea dielectric, ntho eo boemo ba eona bo lokelang ho fumanoa e khomaretsoe ho thepa ea dielectric. bokhoni bo sebedisoa ho fumana boemo bo lekanyeditsweng.
Li-sensor tsa capacitive li ka lekanya ho falla, sebaka, boemo le botenya ba lintho.Ka lebaka la botsitso le tharollo e phahameng ea matšoao, li-sensor tsa capacitive displacement li sebelisoa libakeng tsa laboratori le tsa indasteri.Ka mohlala, li-sensor tsa capacitive li sebelisetsoa ho lekanya botenya ba filimi le li-adhesive applications in automated process.Mechine ea indasteri, li sebelisetsoa ho shebella ho falla le boemo ba lisebelisoa.
Magnetostriction ke thepa ea thepa ea ferromagnetic e etsang hore thepa e fetole boholo ba eona kapa sebōpeho ha matla a khoheli a sebelisoa.Ka mochine oa magnetostrictive position, magnets boemo bo tsamaeang bo khomaretsoe nthong e lekantsoeng.E na le waveguide e nang le lithapo tse tsamaisang li-pulses tsa hona joale, tse kopantsoeng le sensor e teng qetellong ea waveguide ea wave3se, ha hona joale e romelloa leqhubu la maqhubu (figure pulse, figu pulses ea hona joale e romelloa). terata e sebetsanang le matla a khoheli a axial a makenete a sa feleng ( makenete ka piston ea cylinder, Setšoantšo sa 3a) . Tšebelisano ea tšimo e bakoa ke ho sotha (phello ea Wiedemann), e senyang terata, e hlahisang molumo oa acoustic o jalang hammoho le waveguide 'me o fumanoa ke kutlo qetellong ea nako ea "fig. pulse ea hajoale le ho lemoha ha molumo oa acoustic pulse, boemo bo lekanyelitsoeng ba makenete ea boemo, ka hona ntho e ka lekanngoa (Feie.3c).
Li-sensor tsa boemo ba Magnetostrictive ke li-sensor tse sa amaneng tse sebelisetsoang ho bona boemo ba linear. Hangata li-waveguides li kenngoa ka tšepe e sa hloekang kapa li-tubes tsa aluminium, tse nolofalletsang li-sensor tsena ho sebelisoa libakeng tse litšila kapa tse metsi.
Ha motlakase o mosesaane, o bataletseng o behiloe sebakeng sa makenete, phallo efe kapa efe ea hona joale e na le ho aha ka lehlakoreng le leng la mokhanni, e leng se etsang hore ho be le phapang e ka bitsoang Hall voltage. Ka ho lekanya motlakase oa Holo, boemo ba ntho bo ka khethoa.Ho na le li-sensor tse khethehileng tsa Holo-phello e ka khethollang boemo ka litekanyo tse tharo (Setšoantšo sa 4) Li-sensor tsa boemo ba Hall-effect ke lisebelisoa tse sa amaneng tse fanang ka botšepehi bo phahameng le ho utloa ka potlako, 'me li sebetsa ho feta mocheso o pharaletseng.Li sebelisoa mefuteng e mengata ea bareki, lisebelisoa tsa indasteri, likoloi le tsa bongaka.
Ho na le mefuta e 'meli ea mantlha ea li-fiber optic sensors.Ka har'a li-intrinsic fiber optic sensors, fiber e sebelisoa e le ntho ea kutlo.Ka ntle ho li-fiber optic sensors, fiber optics e kopantsoe le theknoloji e' ngoe ea sensor ho fetisetsa lets'oao ho lisebelisoa tsa elektroniki tse hole bakeng sa ts'ebetso. reflectometer.Fiber optic sensors ha e na tšitiso ea motlakase, e ka etsoa hore e sebetse ka mocheso o phahameng, 'me ha e na conductive, kahoo e ka sebelisoa haufi le khatello e phahameng kapa thepa e tukang.
Fiber-optic sensing e 'ngoe e thehiloeng ho theknoloji ea fiber Bragg grating (FBG) e ka boela ea sebelisoa bakeng sa tekanyo ea boemo.FBG e sebetsa e le sesefa sa notch, se bonahatsang karoloana e nyenyane ea leseli e shebaneng le Bragg wavelength (λB) ha e khantšitsoe ke khanya e pharaletseng. , potlakiso le mojaro.
Ho na le mefuta e 'meli ea li-sensor tsa boemo ba optical, tse tsejoang hape e le li-encoder tsa optical. Ketsahalong e 'ngoe, leseli le romeloa ho motho ea amohelang ka lehlakoreng le leng la sensor. ar le rotary motion.Linoro-kutlo tsena li oela likarolong tse tharo tse kholo;li-encoder tsa optical transmissive, li-encoder tsa optical tse bonahatsang, le li-encoder tsa interferometric optical.
Li-sensor tsa boemo ba Ultrasonic li sebelisa li-transducers tsa kristale tsa piezoelectric ho hlahisa maqhubu a ultrasonic maqhubu a phahameng-frequency. The sensor e lekanya molumo o bonts'itsoeng. Li-sensor tsa Ultrasonic li ka sebelisoa e le li-proximity sensors tse bonolo, kapa liqapi tse rarahaneng li ka fana ka boitsebiso bo fapaneng. Li-sensor tsa boemo ba ultrasonic li sebetsa ka lintho tse lebisitsoeng tsa lisebelisoa tse sa tšoaneng le likarolo tse holim'a metsi, 'me li ka lemoha mefuta e mengata ea ho hanyetsa lintho tse nyenyane ho feta mefuta e mengata ea ho hanyetsa. lerata le leholo, mahlaseli a mahlaseli a kotsi le ho kena-kenana le motlakase. ).
Li-sensor tsa boemo li ka lekanya motsamao o felletseng kapa o lekanyelitsoeng, oa ho potoloha le oa angular oa lintho.
3D Magnetic Position Sensors, Allegro MicrosystemsHo Hlahlobisisa le Ntlafatso ea Tšireletseho ea Li-sensors tsa Ultrasonic bakeng sa Likoloi tse Ikemetseng, IEEE Internet of Things Journal Mokhoa oa ho khetha sensor ea boemo, Cambridge Integrated CircuitsPosition sensors, Ixthus InstrumentationSensor ea boemo bo inductive ke eng?, PosinesensitiveK, PositionSeoth, MagsineTEK ke eng?
Batla litokollo tsa morao-rao tsa Design World le litokollo tsa morao-rao ka mokhoa o bonolo oa ho sebelisa, oa boleng bo holimo. Edita, arolelana le ho khoasolla kajeno le makasine ea ka sehloohong ea boenjiniere ba meralo.
Seboka se holimo sa lefats'e sa EE se rarollang mathata se akaretsang li-microcontrollers, DSP, marang-rang, moralo oa analog le dijithale, RF, lisebelisoa tsa elektroniki tsa motlakase, PCB routing, le tse ling.
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