(1)Kub sensor
Lub cuab yeej sau cov ntaub ntawv hais txog qhov kub thiab txias los ntawm qhov chaw thiab hloov mus rau hauv daim ntawv uas tuaj yeem nkag siab los ntawm lwm yam khoom siv lossis tib neeg. Qhov piv txwv zoo tshaj plaws ntawm qhov ntsuas kub yog lub iav mercury tus pas ntsuas kub, uas nthuav dav thiab sib cog lus thaum qhov kub hloov pauv. Qhov ntsuas kub sab nraud yog qhov ntsuas qhov ntsuas kub, thiab tus neeg soj ntsuam saib ntawm qhov chaw ntawm mercury los ntsuas qhov ntsuas kub. Muaj ob hom kev ntsuas kub ntsuas kub:
· Tiv tauj sensor
Hom sensor no yuav tsum muaj kev sib cuag nrog lub cev ncaj qha nrog cov khoom hnov lossis nruab nrab. Lawv tuaj yeem saib xyuas qhov kub thiab txias ntawm cov khoom khib nyiab, kua thiab roj ntau dhau qhov kub thiab txias.
· Tsis tiv tauj sensor
Hom sensor no tsis tas yuav muaj kev sib cuag lub cev nrog cov khoom lossis nruab nrab raug kuaj pom. Lawv saib xyuas cov khoom tsis zoo thiab cov kua dej, tab sis tsis muaj txiaj ntsig tiv thaiv cov pa roj vim lawv qhov pom tseeb. Cov sensors ntsuas kub siv Planck txoj cai. Txoj cai lij choj hais txog cov cua sov uas tau tawg los ntawm lub tshav kub los ntsuas qhov kub thiab txias.
Cov ntsiab cai ua haujlwm thiab cov piv txwv ntawm ntau homkub sensors:
(i) Thermocouples - Lawv muaj ob lub xov hlau (txhua qhov sib txawv ntawm cov hlau sib txawv lossis cov hlau) ua ib qho kev ntsuas kev sib koom tes los ntawm kev sib txuas ntawm ib qho kawg uas qhib rau lub caij hauv kev sim. Lwm qhov kawg ntawm cov hlau yog txuas nrog lub ntsuas ntsuas, qhov twg qhov kev sib tshuam yog tsim. Txij li thaum qhov kub ntawm ob lub nodes sib txawv, tam sim no ntws los ntawm Circuit Court thiab cov millivolts tshwm sim los txiav txim qhov kub ntawm cov node.
(ii) Resistance Temperature Detectors (RTDS) - Cov no yog cov thermal resistors uas tau tsim los hloov kev hloov pauv raws li qhov kub thiab txias, thiab lawv kim dua lwm yam khoom siv ntsuas kub.
(iii)Thermistors- lawv yog lwm hom kev tiv thaiv qhov kev hloov pauv loj hauv kev tiv thaiv yog proportional los yog inversely proportional rau me me hloov nyob rau hauv qhov kub thiab txias.
(2) Infrared sensor
Cov cuab yeej tso tawm lossis pom cov hluav taws xob infrared kom paub cov theem tshwj xeeb hauv ib puag ncig. Feem ntau, cov hluav taws xob thermal yog tawm los ntawm txhua yam khoom hauv infrared spectrum, thiab infrared sensors ntes cov hluav taws xob no uas tsis pom ntawm tib neeg lub qhov muag.
· Qhov zoo
Yooj yim rau kev sib txuas, muaj nyob hauv khw.
· Qhov tsis zoo
Yuav cuam tshuam los ntawm lub suab nrov ambient, xws li hluav taws xob, ambient teeb, thiab lwm yam.
Nws ua haujlwm li cas:
Lub tswv yim yooj yim yog siv lub teeb infrared-emitting diodes kom emit infrared teeb rau cov khoom. Lwm infrared diode ntawm tib hom yuav siv los ntes nthwv dej uas tshwm sim los ntawm cov khoom.
Thaum lub infrared receiver yog irradiated los ntawm lub teeb infrared, muaj qhov sib txawv voltage ntawm cov hlau. Txij li thaum qhov hluav taws xob tsim tawm me me thiab tsis yooj yim rau kev kuaj pom, lub tshuab ua haujlwm ua haujlwm (op amp) yog siv los ntsuas qhov ntsuas qis qis.
(3) Ultraviolet sensor
Cov sensors ntsuas qhov siv los yog lub zog ntawm qhov teeb meem ultraviolet teeb. Qhov hluav taws xob hluav taws xob hluav taws xob no muaj lub wavelength ntev dua X-rays, tab sis tseem luv dua li pom lub teeb. Ib qho khoom siv hu ua polycrystalline pob zeb diamond yog siv los txhim khu kev ntseeg ultraviolet sensing, uas tuaj yeem ntes ib puag ncig raug rau ultraviolet hluav taws xob.
Cov txheej txheem rau xaiv UV sensors
· Wavelength ntau yam uas tuaj yeem kuaj tau los ntawm UV sensor (nanometer)
· Ua haujlwm kub
· Qhov tseeb
· Nyhav
· Ntau lub zog
Nws ua haujlwm li cas:
Uv sensors tau txais ib hom hluav taws xob teeb liab thiab xa ntau hom hluav taws xob teeb liab.
Txhawm rau soj ntsuam thiab sau cov cim tso tawm, lawv raug coj mus rau lub ntsuas hluav taws xob. Txhawm rau tsim cov duab thiab cov ntawv ceeb toom, cov teeb liab tso tawm tau xa mus rau analog-to-digital converter (ADC) thiab tom qab ntawd mus rau lub computer ntawm software.
Daim ntawv thov:
· Ntsuas ib feem ntawm UV spectrum uas sunburns ntawm daim tawv nqaij
· Tsev muag tshuaj
· Tsheb
· Robotics
· Solvent kho thiab dyeing txheej txheem rau luam ntawv thiab dyeing kev lag luam
Kev lag luam tshuaj rau kev tsim khoom, khaws cia thiab kev thauj mus los ntawm cov tshuaj
(4) Kov sensor
Lub kov sensor ua raws li qhov sib txawv ntawm cov resistor nyob ntawm qhov chaw kov. Daim duab ntawm tus kov sensor ua haujlwm raws li qhov sib txawv ntawm cov resistor.
Lub kov sensor muaj cov khoom hauv qab no:
· Cov khoom siv hluav taws xob tag nrho, xws li tooj liab
· Insulating spacer khoom, xws li ua npuas ncauj lossis yas
· Ib feem ntawm cov khoom siv hluav taws xob
Txoj cai thiab kev ua haujlwm:
Qee cov khoom siv hluav taws xob tawm tsam qhov ntws ntawm tam sim no. Lub hauv paus ntsiab lus ntawm linear txoj hauj lwm sensors yog tias qhov ntev ntawm cov khoom siv los ntawm qhov tam sim no yuav tsum dhau, qhov ntau qhov tam sim no ntws rov qab. Yog li ntawd, qhov tsis kam ntawm cov khoom siv hloov pauv los ntawm kev hloov nws txoj haujlwm ntawm kev sib cuag nrog cov khoom siv tag nrho.
Feem ntau, lub software txuas nrog lub ntsuas ntsuas. Hauv qhov no, lub cim xeeb yog muab los ntawm software. Thaum cov sensors raug kaw, lawv tuaj yeem nco qab "qhov chaw ntawm kev sib cuag zaum kawg." Thaum lub sensor tau qhib lawm, lawv tuaj yeem nco txog "thawj qhov chaw sib cuag" thiab nkag siab txhua qhov tseem ceeb cuam tshuam nrog nws. Qhov kev txiav txim no zoo ib yam li txav tus nas thiab muab tso rau ntawm qhov kawg ntawm lub ncoo nas txhawm rau txav tus cursor mus rau qhov kawg ntawm qhov screen.
Thov
Kov sensors yog tus nqi-zoo thiab ruaj khov, thiab tau siv dav
Kev lag luam - kev kho mob, kev muag khoom, kev tawm dag zog thiab kev ua si
· Cov khoom siv - qhov cub, ntxhua khaub ncaws / tshuab ziab khaub ncaws, tshuab ntxhua khaub ncaws, tub yees
Tsheb thauj mus los - Yooj yim tswj ntawm cockpit manufacturing thiab tsheb manufacturers
· Ua kua theem sensor
Kev lag luam automation - txoj hauj lwm thiab qib kev paub, phau ntawv kov tswj hauv kev siv automation
Consumer electronics – muab cov theem tshiab ntawm kev xav thiab tswj nyob rau hauv ntau yam khoom siv
Qhov sib thooj sensors kuaj pom cov khoom uas tsis tshua muaj kev sib cuag. Vim tias tsis muaj kev sib cuag ntawm lub sensor thiab cov khoom raug ntsuas, thiab vim tias tsis muaj cov khoom siv tshuab, cov sensors muaj lub neej ua haujlwm ntev thiab kev ntseeg siab. Ntau hom kev sib thooj sensors yog inductive sib thooj sensors, capacitive sib thooj sensors, ultrasonic sib thooj sensors, photoelectric sensors, Hall effect sensors thiab hais txog.
Nws ua haujlwm li cas:
Qhov sib thooj sensor emissions electromagnetic los yog electrostatic teb los yog ib tug nqaj ntawm electromagnetic hluav taws xob (xws li infrared) thiab tos rau ib tug rov qab teeb liab los yog ib tug hloov nyob rau hauv lub tshav pob, thiab cov khoom raug hnov yog hu ua lub hom phiaj ntawm qhov sib thooj sensor.
Inductive sib thooj sensors - lawv muaj lub oscillator raws li cov tswv yim uas hloov qhov poob tsis kam los ntawm kev mus txog qhov nruab nrab. Cov sensors no yog cov hom phiaj hlau nyiam.
Capacitive sib thooj sensors - lawv hloov pauv hauv electrostatic capacitance ntawm ob sab ntawm cov khoom siv hluav taws xob thiab cov av electrode. Qhov no tshwm sim los ntawm kev mus ze cov khoom nyob ze nrog kev hloov pauv hauv oscillation zaus. Txhawm rau txheeb xyuas cov hom phiaj nyob ze, qhov zaus oscillation yog hloov mus rau DC voltage thiab muab piv rau qhov pib ua ntej. Cov sensors no yog thawj qhov kev xaiv rau cov hom phiaj yas.
Thov
· Siv nyob rau hauv automation engineering los txhais lub xeev kev khiav hauj lwm ntawm cov txheej txheem engineering khoom, ntau lawm systems thiab automation khoom
· Siv nyob rau hauv lub qhov rais kom qhib lub ceeb toom thaum lub qhov rais qhib
· Siv rau kev soj ntsuam kev vibration los xam qhov sib txawv ntawm qhov sib txawv ntawm cov ncej thiab cov kabmob txhawb nqa
Post lub sij hawm: Jul-03-2023