Kodi capacitive sensor ndi chiyani?

Zamkatimu

Monga mitundu ina yama sensa (mwachitsanzo, masensa olowerera), masensa opanga amatha kugwira ntchito osakhudzana ndi chinthu chomwe akufufuzacho. Mwanjira ina, masensa amtunduwu ndizida zosalumikizana. Ndi chithandizo chawo, zida zamagetsi zoyendetsa komanso zosakhazikika zimatha kupezeka. Chifukwa cha malowa, masensa opanga ma capacitive amatha kugwiritsidwa ntchito m'malo omwe, mwachitsanzo, masensa osagwira ntchito.

Kodi capacitive sensor ndi chiyani, kapangidwe kake ndi momwe amagwirira ntchito


Chojambulira chotere sichimakhala chovuta kwambiri ngati chida ndipo nthawi zambiri chimakhala ndi:

Kuphatikizika

Thupi limapangitsa kuti zitheke kusonkhanitsa zinthu zonse kukhala chimodzi. Kuphatikiza apo, imapereka chitetezo chodalirika cha zinthu kuchokera kuzinthu zakunja zomwe zingakhudze magwiridwe ake. Thupi la capacitive sensor nthawi zambiri limapangidwa ndi mkuwa kapena polyamide.

Cholumikizira

Ndi utomoni wapadera womwe umateteza zotengera ku sensa kapena zinthu zina zovulaza.

Choyambitsa

Choyambitsa chimapanga mphamvu yakusinthira yofunikira ndi kuchuluka kwa hysteresis (uku ndiye kusiyana kwakutali musanayatse).

Ma LED

Ma LED amapereka dongosolo mwachangu ndikuwonetsa malo osinthira.

Mkuzamawu

Amakweza chizindikiro chotsatsira pamtengo woyenera.

Wowonetsa

Demodulator amasintha ma frequency oscillations mpaka magetsi asintha.

Jenereta

Amapanga gawo lamagetsi lomwe limagwira ntchito pachinthucho.

Maelekitirodi

Pamwamba pa chojambulira cha capacitive nthawi zambiri pama elekitirodi awiri omwe amakhala ngati ma capacitor mbale omwe amalumikizidwa ndi mayendedwe a jenereta. Iyenso, amasinthidwa kuti asinthe mphamvu yake pamene ikuyandikira chinthu cholamulidwa.

Chifukwa cha kugwedezeka uku, sensa ikayandikira chinthu, jeneretayo imatulutsa matalikidwe owonjezeka, omwe amakonzedwa ndikupanga chizindikiro.

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Masensa osunthika amayendetsedwa ndi zinthu zamagetsi zoyendetsa komanso ma dielectric. Pamene chinthu choyendetsa chikuyandikira, mtunda wozindikira umakhala wokulirapo kuposa momwe zinthu zoyeserera zilili ma dielectric (mtunda woyankha umadalira kusintha kwa ma dielectric).

Kodi capacitive sensor ndi chiyani?

Gwiritsani ntchito
Kugwiritsa ntchito masensa amtunduwu ndiochulukirapo komanso osiyanasiyana. Amagwiritsidwa ntchito kwambiri pakuwongolera mafakitale pamakampani onse.

Amagwiritsidwa ntchito pama sensa oyimitsira magalimoto ndikuwongolera kudzazidwa kwa akasinja ndi zinthu zamadzimadzi, zochulukirapo komanso zamagesi, zosintha pamizere, pamakina, makina, zotumiza, ma alamu ndi ena.

Mitundu yama sensa a capacitive ndi momwe amagwiritsira ntchito


Masensa oyandikira

Pakadali pano, imodzi mwazomwe zimagwiritsidwa ntchito kwambiri ndi masensa oyandikira, omwe, kuwonjezera pokhala odalirika kwambiri, ali ndi zabwino zambiri.

Masensa amtunduwu amagwiritsidwa ntchito pafupifupi m'malo onse chifukwa ndiotsika mtengo kwambiri. Amagwiritsidwa ntchito kuwongolera kuchuluka kwazodzaza zidebe zosiyanasiyana, magetsi owongolera, kuwunikira pakakhala zovuta pazingwe zopanga ndi ena.

Ma encoders okhala ndi mawonekedwe osunthira okhazikika ndi ofanana

Masensa amtunduwu amagwiritsidwa ntchito m'mafakitale monga umisiri wamakina, mphamvu, zoyendera, zomangamanga ndi zina.

Ma inclinometers

Ma inclinometers omwe amagwiritsidwa ntchito amagwiritsidwa ntchito papulatifomu yamafuta pamakina osanjikiza, kudziwa kusinthika kwa zogwirizira, kuwunika ndikuwongolera kutsetsereka kwa misewu ndi njanji pomanga, kudziwa magalimoto, zombo, zikepe, zida zokwezera, makina azinyama kuti azindikire kusunthika kwa zinthu zosinthasintha, monga ngati shafeti, magiya ndi zida, zonse zoyimirira komanso zosunthika.

Mphamvu zamagetsi zamagetsi

Masensa amtunduwu amagwiritsidwa ntchito poyang'anira, kuwongolera ndi kuwongolera momwe amagwirira ntchito m'makampani azakudya, mankhwala, mankhwala ndi mafuta.

Zimagwira bwino kwambiri kuthana ndi zakumwa, zinthu zambiri, zowoneka bwino komanso zosakhazikika, komanso m'malo ogwirira ntchito m'zipinda kapena malo momwe fumbi kapena condens zimakhazikika.

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Masensa osunthika amagwiritsidwa ntchito kwambiri m'mafakitale momwe muyeso wolondola wa kuthamanga konsekonse, makulidwe azinthu zamagetsi, chinyezi, zopindika komanso zopindika, ndi zina zimafunikira.

Gulu la masensa opanga mawonekedwe malinga ndi momwe akuyendera


Mitundu yonse yama sensa amatha kugawika m'magulu awiri: masensa okhala ndi akasinja amodzi ndi awiri. Zotsatirazi zidagawidwanso m'magulu osiyana komanso osiyana.

Masensa osakwatiwa-okha amakhala ndi mawonekedwe osavuta ndipo amasintha mosiyanasiyana. Chojambulira chamtunduwu chimakhala ndi zovuta zingapo, zomwe zimaphatikizapo zochitika zazikulu zachilengedwe monga chinyezi ndi kutentha.

Kuipa kwa masensa okhala ndi mawonekedwe osiyana ndikuti amasiyana ndi masensa okhala ndi capacitance imodzi, ndipo kusiyanasiyana kuli ndi mawaya osachepera atatu olumikizira pakati pa sensa ndi chida choyezera kuti muchepetse zovuta za chinyezi ndi kutentha.

Komabe, chifukwa chakuchepa kwakuchepa uku, masensa osiyanitsa amakulitsa kwambiri kulondola kwawo ndi kukhazikika ndipo potero amakulitsa gawo logwiritsa ntchito.

Ubwino wa masensa capacitive
Poyerekeza ndi masensa opikisana, ophatikizira komanso opangira ma piezoelectric, masensa opanga mawonekedwe ali ndi zabwino zambiri, kuphatikiza:

  • kupanga kosavuta - zida zotsika mtengo zimagwiritsidwa ntchito popanga masensa osunthika, omwe amakhudza mtengo womaliza wa malonda;
  • kukula pang'ono ndi kulemera;
  • kugwiritsa ntchito mphamvu zochepa;
  • mkulu tilinazo;
  • osalumikizana nawo (sayenera kukhala pafupi ndi chinthu chomwe amaphunzira;
  • moyo wautali wautumiki;


Kusintha kosavuta kwa kapangidwe ka sensa ka ntchito zosiyanasiyana ndi miyezo.


zolakwa
Zina mwazovuta zoyipa kwambiri zama sensa opanga ndi:

  • kutembenuka kocheperako (kusamutsa);
  • kufunika kogwira ntchito pafupipafupi pamwamba pa 50 Hz;
  • magwiridwe antchito atha kukhudzidwa ndi fumbi ndi chinyezi, ndipo sensa imatha kuzindikira mayeso olakwika;
  • kutentha kutentha.


Zomangamanga zogwiritsa ntchito ndizosavuta kupanga, zomwe zimapangitsa kuti zikhale zolimba komanso zodalirika. Zigawo za capacitor zimangodalira mawonekedwe ake ndipo sizidalira mtundu wa zida zomwe zimagwiritsidwa ntchito, ngati zasankhidwa molondola.

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Vuto lakumvetsetsa kwa kutentha kumatha kuthetsedwa posankha zinthu zoyenera mbale ndi zotchingira zoyenera kuti zimange. Zimangowonjezera chitetezo chawo ku zovuta za fumbi, chinyezi ndi ma radiation, ndipo masensa amtunduwu amakhala ndi mitundu ingapo yamagwiritsidwe.

Ndipo pamapeto pake, titha kufotokoza mwachidule ...

Masensa a capacitive amagwiritsa ntchito mphamvu zochepa zamakina zomwe zimafunikira kusuntha gawo losuntha, kusintha zomwe zimachokera ku dongosolo ndikugwira ntchito molondola kwambiri. Zonsezi zimapangitsa masensa awa kukhala ofunikira pakuyezera kolondola kwa zinthu zomwe zimayendetsa komanso zopanda conductive.

Mafunso ndi Mayankho:

Kodi ma capacitive sensors ndi chiyani? Single-capacitive, double-capacitive. Nawonso amagawidwa kukhala: liniya, angular, inclinometers, masensa mlingo, kuthamanga transducers.

Kodi ma capacitive sensors amapangidwira bwanji ndipo amagwira ntchito bwanji? Mu masensa oterowo, chizindikiro choyezera chimasintha, chifukwa chomwe kukana kumasintha. Masensa oterowo amagwiritsidwa ntchito kutembenuza chinyezi, kuthamanga, mphamvu yamakina, ndi zina zambiri.

Kodi sensor ya capacitive imagwira ntchito bwanji? Mu sensa yotere, chifukwa cha kusintha kwa mlingo woyezera, mphamvu ya capacitor imasinthanso (imapangidwa ndi kafukufuku ndi makoma a posungira - madzi ochulukirapo m'madzi, ndipamwamba mphamvu).

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