CA202 piezoelectric accelerometer babban na'urar saka idanu na rawar jiki ne daga layin samfurin VM, ta amfani da fasahar ji na piezoelectric ta musamman da aka tsara musamman don saka idanu da auna girgiza masana'antu. Kayan aikin yana ba da daidaituwar yanayin muhalli na musamman da daidaiton aunawa, mai iya aiki mai ƙarfi a cikin matsanancin yanayin zafi (-55 zuwa 260°C) da yuwuwar mahalli masu fashewa.
CA202 yana da fasalin ma'auni mai ma'auni na polycrystalline mai ma'auni tare da rufin shari'a na ciki, sanye take da kebul na haɗin gwiwa da bututun kariya na bakin karfe, yana samar da taro mai tabbatar da ruwa gaba ɗaya. Ana samun wannan na'urar accelerometer a cikin daidaitattun sigogin da aka tabbatar da fashe-fashe don biyan buƙatun aikace-aikacen mahallin masana'antu daban-daban, musamman dacewa da lura da girgizar kayan aikin masana'antu masu nauyi.
Na'urar tana da hazaka mai girma (100 pC/g) da kewayon amsa mitoci mai faɗi (0.5 zuwa 6,000 Hz), yana ba da damar kama daidai siginar girgiza daga ƙasa zuwa manyan mitoci. Gidan sa na bakin karfe mai kauri da kuma ƙirar da aka rufe yana ba da juriya ga abubuwa daban-daban na muhalli da suka haɗa da zafi, tururin ruwa, gurɓataccen mai, da fesa gishiri.
Ƙa'idar Aiki
CA202 piezoelectric accelerometer yana aiki bisa ka'idar tasirin piezoelectric, wanda ya ƙunshi madaidaicin tsarin jujjuyawar jiki da fasahar sarrafa sigina. Ana iya yin cikakken bayani game da tsarin aiki ta hanyar mahimman fannoni masu zuwa:
1. Tasirin Piezoelectric da Injinan Juyawar Electromechanical
Cibiyoyin na'urar tana amfani da nau'in ji mai ji na polycrystalline piezoelectric. Lokacin da accelerometer ya fuskanci rawar jiki, taro yana yin amfani da karfi mai ƙarfi ga kristal piezoelectric. Dangane da ka'idar tasirin piezoelectric, kayan aikin piezoelectric suna fuskantar polarization a ƙarƙashin damuwa na inji, tare da ƙaurawar tsarin lattice na ciki yana haifar da rarraba caji mara daidaituwa, ta haka ne ke haifar da siginar caji daidai da ƙarfin da aka yi amfani da shi akan farfajiyar crystal. Wannan tsarin jujjuyawar lantarki yana ba da madaidaiciyar madaidaiciya da kwanciyar hankali, kai tsaye yana jujjuya makamashin girgizar injin zuwa fitarwar siginar lantarki.
Ƙirar-yanayin shear yana ba da fa'idodi masu mahimmanci akan ƙirar yanayin matsawa: yana nuna ƙananan hankali ga nau'in tushe da canje-canjen zafin jiki, yana ba da ƙarin ingantaccen aikin fitarwa. Zaɓin kayan aikin piezoelectric na polycrystalline yana tabbatar da daidaituwar hankali da halayen layi a cikin kewayon zafin jiki mai faɗi.
2. Tsarin Ma'auni da Tsarin Fitar da Bambanci
CA202 tana ɗaukar sifar firikwensin simmetric na musamman wanda ke ɗauke da abubuwa guda biyu masu daidaita daidaitattun abubuwa. Wannan ƙira yana samar da siginonin fitarwa na banbanta waɗanda ke danne tsangwama na gama-gari da haɓaka ingancin sigina. Lokacin da aka sa axial acceleration, abubuwa biyu piezoelectric suna haifar da sigina na caji daidai girman girman amma sabanin polarity. Ta hanyar haɓakawa daban-daban, ana haɓaka sigina masu amfani yayin da ake danne tsangwama na gama gari da hayaniyar zafin jiki yadda ya kamata.
Zane-zanen rufe fuska na cikin gida yana tabbatar da cikakken keɓewa tsakanin fitilun sigina da mahalli, hana ƙirƙirar madauki na ƙasa da ƙara haɓaka iyawar tsoma baki. Wannan ƙirar ta dace musamman don amfani a cikin hadaddun mahallin lantarki na masana'antu, yana tabbatar da tsabta da daidaiton siginar aunawa.
3. Halayen Sigina da Halayen Watsawa
Na'urar tana samar da siginar fitarwa na caji tare da azanci na 100 pC/g ± 5%. Sigina na caji suna da muhimmiyar sifa na rashin tasiri ta hanyar ƙarfin kebul, yana sa su dace da watsa nisa mai nisa. Matsakaicin firikwensin ciki shine 5000 pF (tsakanin fil) da 10 pF (tsakanin fil da harka), yayin da ƙarfin kebul shine 105 pF/m (tsakanin fil) da 210 pF/m (tsakanin fil da harka).
Wannan fitowar caji mai ƙarfi yana buƙatar amplifiers caji (kamar IPC70x jerin kwandishan sigina) don canza siginar caji zuwa siginar wutar lantarki mara ƙarfi don aiki na gaba. Hanyar fitarwar caji tana guje wa hayaniyar kebul da abubuwan da suka dace da impedance da na'urori masu auna wutar lantarki ke fuskanta.
4. Rufe Tsari da Tsarin Kare Muhalli
Na'urar firikwensin yana da wani bakin karfe na austenitic (1.4441) wanda aka yi masa waldawa tare da bakin karfe mai jure zafi (1.4541) don samar da taron da zai tabbatar da ruwa gaba daya. Wannan ƙirar da aka rufe tana ba da juriya ga zafi na dangi 100%, ruwa, tururi, mai, yanayin gishirin teku, da sauran gurɓatattun abubuwa kamar ƙura, naman gwari, da yashi.
Tushen kariyar ba wai kawai yana ba da kariya ta inji ba amma kuma yana kiyaye sassaucin kebul, tare da ƙaramin lanƙwasa radius yana ba da damar shigarwa a cikin wurare da aka keɓe. Tsarin kebul na haɗin kai yana kawar da al'amurran da suka dace waɗanda zasu iya tasowa daga masu haɗawa, yana tabbatar da ingantaccen watsa sigina na dogon lokaci.
5. Matsalolin Zazzabi da Tsabtace Tsabtace
Na'urar tana nuna kyakkyawan kwanciyar hankali, tare da kuskuren azancin zafin jiki na 0.25%/°C a cikin kewayon -55 zuwa +23°C da 0.1%/°C a cikin kewayon +23 zuwa 260°C. Ana samun wannan halayen ramuwa na zafin jiki ta hanyar zaɓaɓɓun kayan piezoelectric da ƙirar tsari, tabbatar da daidaiton aiki a cikin kewayon zafin jiki mai faɗi.
Na'urar firikwensin yana amfani da ƙira mai ma'ana ta thermal don rage kurakuran ma'auni da ke haifar da gradients thermal. Matsakaicin ma'aunin tushe yana da ƙasa sosai a 0.15 × 10^{-3} g/μϵ kawai, ma'ana nakasar yanayin zafi na saman saman da wuya yana rinjayar daidaiton aunawa.
6. Amsa Mita-Tsarki da Halayen Maɗaukaki
Amsar mitar na'urar ta tashi daga 0.5 zuwa 6,000 Hz (± 5%), tare da mitar resonant sama da 22 kHz. Ana ƙaddamar da martanin ƙananan mitoci ta hanyar kwandishan siginar da ta dace, yayin da halayen maɗaukaki masu tsayi suna ƙaddara ta tsarin injin firikwensin. Ƙirar-tsarin yanayi yana ba da mafi girman mitar resonant, yana tabbatar da amsa lebur a cikin kewayon mitar mai faɗi.
Matsakaicin ma'auni mai ƙarfi ya ƙaru daga 0.01 g kololuwa zuwa ganiya 400 g, tare da wuce gona da iri har zuwa 500 g ganiya. Wannan faffadan kewayo mai ƙarfi yana ba da damar ma'auni daidaitattun motsin injina daban-daban daga girgiza zuwa mummunan tasiri.
7. Fashewa-Tabbacin Tsarin Kariya
Sifofin tabbatar da fashewa suna amfani da aminci na cikin gida (Ex ia) da nau'ikan kariyar da ba ta da ƙarfi (Ex nA), suna saduwa da ƙa'idodi daban-daban na tabbatar da fashewar fashewar ƙasa. Tsarin aminci na ciki yana tabbatar da cewa babu tartsatsi ko filaye masu zafi da ke iya kunna fashewar yanayi da aka haifar a ƙarƙashin kuskure ta iyakance makamashin kewayawa.
Hanyoyin kariya sun haɗa da ƙayyadaddun ƙayyadaddun halin yanzu da hanyoyin fitarwa makamashi, tabbatar da bin buƙatun tabbatar da fashewa a ƙarƙashin duk yanayin aiki. Wannan ƙirar tana ba da damar aikace-aikacen aminci a cikin Yanki 0/1/2 masu haɗari.
Siffofin
CA202 piezoelectric accelerometer yana ba da fasali da yawa na ci gaba don saduwa da ƙaƙƙarfan buƙatun saka idanu na girgiza masana'antu:
1. Ayyukan Auna Maɗaukaki Mai Girma
Na'urar tana ba da babban hankali na 100 pC/g, yana ba da damar gano siginar girgizar mintuna. Kyakkyawan layin layi: ± 1% a cikin kewayon 0.01 zuwa 20 g da ± 2% a cikin kewayon 20 zuwa 400 g. Matsakaicin hankali ƙasa da 3% yana tabbatar da daidaiton jijjiga shugabanci na farko.
2. Matsanancin Daidaituwar Muhalli
Wurin zafin aiki mai faɗi sosai: -55 zuwa +260°C don firikwensin, -55 zuwa +200°C don haɗin kebul. Yanayin rayuwa na ɗan gajeren lokaci ya fi girma: har zuwa -70 zuwa +280 ° C don firikwensin da -62 zuwa +250 ° C don kebul. Wannan kewayon zafin jiki ya ƙunshi mafi yawan yanayin aikace-aikacen masana'antu.
3. Gine-ginen Makanikai Mai Karko
Austenitic bakin karfe gidaje yana ba da kyakkyawan ƙarfin injiniya da juriya na lalata. Tsarin welded na hermetically yana tabbatar da cikakken aikin da ba zai iya jurewa ba, yana tsayayya da yazawa daga muggan abubuwan muhalli daban-daban. Na'urar za ta iya jure saurin girgiza har zuwa 1000 g ganiya (rabin-sine, 1 ms duration).
4. Zaɓuɓɓukan shigarwa masu sassauƙa
Zaɓuɓɓukan tsayin kebul huɗu: mita 3, mita 6, mita 11, da mita 20, suna saduwa da buƙatun nesa na shigarwa daban-daban. Madaidaicin ramukan hawa M6 tare da M4 makulli makulli, juzu'in hawan 15 N·m. Ba a buƙatar ƙarin saman hawa mai rufin lantarki da ake buƙata.
5. Cikakken Taimakon Takaddun Shaida
Takaddun shaida na duniya da yawa: Alamar CE, alamar EAC, ATEX, IECEx, cCSAus, da sauransu. Ya dace da buƙatun muhalli na RoHS.
6. Sauƙaƙe Haɗewa da Kulawa
Fitowa daban-daban da ƙirar ƙirar ciki suna sauƙaƙe tsarin haɗin kai. Tsarin haɗin kebul yana haɓaka aminci kuma yana rage bukatun kulawa. MA133 kayan adaftar adaftan akwai, gami da Micaver (mica-glass) tushen keɓewar zafi don buƙatun shigarwa na musamman.
Takaitaccen Bayanin Fasaha
| abu |
Ƙayyadaddun |
| Hankali |
100 pC/g ± 5% |
| Amsa Mitar |
0.5 zuwa 6,000 Hz (± 5%) |
| Rage Rage |
daga 0.01 zuwa 400 g |
| Ƙarfin Ƙarfafawa |
500 g tumatir |
| Yanayin Aiki |
-55 zuwa + 260°C (sensor) |
| Mitar Resonant |
> 22 kHz |
| Linearity |
± 1% (0.01-20 g), ± 2% (20-400 g) |
| Ƙimar Kariya |
Hermetically rufe |
| Nauyi |
Kimanin 250 g (ma'auni) |
Yankunan aikace-aikace
CA202 piezoelectric accelerometer ana amfani dashi ko'ina a cikin fage masu zuwa:
Kulawa da Injinan Masana'antu: Kula da rawar jiki na manyan injina masu jujjuyawa kamar injin turbines, compressors, da famfo.
Masana'antar Makamashi: Kula da yanayi da gano kuskuren kayan aikin wutar lantarki
Masana'antar Petrochemical: Kula da girgizar kayan aiki a cikin mahalli masu yuwuwar fashewar abubuwa
Aerospace: Gwajin jijjiga na injuna da kayan taimako
Masana'antu Masu nauyi: Tsare-tsare na kayan aikin ƙarfe da ma'adinai
