Oyenera Cummins L10 N14 M11 mafuta kuthamanga sensa 4921485

Capacitive position sensor

1.Capacitive position sensor ndi malo osalumikizana, omwe nthawi zambiri amakhala ndi magawo atatu: malo ozindikira, chitetezo chotetezera ndi chipolopolo. Amatha kuyeza malo enieni a chandamale, koma chinthu chokhacho. Ngati chinthu choyezedwa sichikuyenda bwino, chimakhalabe chothandiza kuyeza makulidwe ake kapena kachulukidwe.

2.Poyezera chinthu choyendetsa, chizindikiro chotulutsa sichikugwirizana ndi zinthu za chinthucho, chifukwa kwa capacitive displacement sensor, ma conductors onse ndi electrode yomweyo. Mtundu woterewu umagwiritsidwa ntchito makamaka pa disk drive, ukadaulo wa semiconductor komanso muyeso wapamwamba kwambiri wamakampani, koma umafunika kulondola kwambiri komanso kuyankha pafupipafupi. Akagwiritsidwa ntchito kuyeza osayendetsa, masensa a capacitive position nthawi zambiri amagwiritsidwa ntchito kuti azindikire malemba, zokutira ndi kuyeza makulidwe a pepala kapena filimu.

3.Capacitive position sensor poyambirira idagwiritsidwa ntchito kuyeza mtunda wamtunda wosuntha, kuyambira mamilimita angapo mpaka ma nanometer angapo, ndipo muyesowo unamalizidwa pogwiritsa ntchito mawonekedwe amagetsi a conductivity. Kukhoza kwa chinthu kusunga ndalama kumatchedwa capacitance. Chida chodziwika bwino cha capacitor chosungira ndalama ndi mbale capacitor. The capacitance wa mbale capacitor mwachindunji molingana ndi elekitirodi dera ndi dielectric mosalekeza, ndi inversely molingana ndi mtunda pakati maelekitirodi. Choncho, pamene mtunda pakati pa maelekitirodi kusintha, capacitance amasinthanso. Mwachidule, capacitive position sensor imagwiritsa ntchito izi kuti amalize kuzindikira malo.

4.A wamba capacitive udindo sensa imaphatikizapo maelekitirodi awiri zitsulo, ndi mpweya monga dielectric. Electrode imodzi ya sensa ndi mbale yachitsulo, ndipo electrode ina ya capacitor imapangidwa ndi chinthu chochititsa chidwi kuti chidziwike. Mphamvu yamagetsi ikagwiritsidwa ntchito pakati pa mbale za conductor, gawo lamagetsi limakhazikitsidwa pakati pa mbale, ndipo mbale ziwirizi zimasunga zolipiritsa zabwino ndi zoyipa motsatana. Capacitive udindo sensa zambiri utenga AC voteji, zomwe zimapangitsa mlandu pa mbale kusintha polarity nthawi zonse, kotero kusintha chandamale udindo akhoza wapezeka ndi kuyeza capacitance pakati pa mbale ziwiri.

5.Capacitance imatsimikiziridwa ndi mtunda pakati pa mbale, dielectric constant ya dielectric ndi mtunda pakati pa mbale. Mu masensa ambiri, dera ndi dielectric mosasinthasintha wa mbale elekitirodi sizidzasintha, kokha mtunda udzakhudza capacitance pakati elekitirodi ndi chandamale chinthu. Choncho, kusintha kwa capacitance kungasonyeze malo omwe mukufuna. Kupyolera mu calibration, chizindikiro chamagetsi chotulutsa cha sensa chimakhala ndi ubale wofanana ndi mtunda pakati pa bolodi lodziwira ndi chandamale. Uku ndiye kukhudzika kwa sensor. Imawonetsa chiŵerengero cha kusintha kwa voteji posintha malo. Chipangizocho nthawi zambiri chimakhala 1V/micron, ndiye kuti, mphamvu yamagetsi imasintha 1V pa 100 microns iliyonse.

6.Pamene magetsi akugwiritsidwa ntchito pa malo ozindikira, malo osakanikirana a magetsi adzapangidwa pa chinthu chodziwika. Kuti muchepetse kusokoneza, gawo loteteza limawonjezeredwa. Imagwiritsa ntchito mphamvu yofanana ya electromotive pamapeto onse a malo odziŵika kuti ateteze gawo lamagetsi mu malo ozindikira kuti asatayike. Oyendetsa kunja kwa madera ena odziŵika adzapanga malo amagetsi okhala ndi chitetezo chotetezera ndipo sadzasokoneza magetsi pakati pa cholinga ndi malo ozindikira. Chifukwa cha chitetezo chachitetezo, gawo lamagetsi pamalo ozindikira ndi conical. Malo omwe akuyembekezeredwa amagetsi opangidwa ndi electrode yodziwikiratu ndi 30% yayikulu kuposa malo ozindikira. Chifukwa chake, gawo laling'ono la chinthu chomwe chapezeka liyenera kukhala lalikulu 30% kuposa malo ozindikira a sensor.