IPC704 babban kwandishan sigina ne daga layin samfurin Meggit, wanda aka kera musamman don piezoelectric accelerometers (jerin CAxxx) da na'urori masu auna matsa lamba (jerin CPxxx). Wannan na'urar da farko tana jujjuya siginar caji daga na'urori masu auna firikwensin zuwa daidaitattun sigina na halin yanzu ko ƙarfin lantarki don watsa nisa zuwa tsarin sarrafawa na gaba (kamar katunan sayan bayanai, PLCs, ko tsarin kulawa). Tare da ayyuka masu daidaitawa sosai, zaɓuɓɓukan fitarwa da yawa, da hanyoyin shigarwa iri-iri, IPC704 ya dace da buƙatun yanayi a masana'antu, makamashi, sararin samaniya, da sauran sassa.
Mabuɗin Siffofin
1. Juya sigina da watsawa
Babban aikin IPC704 shine canza siginar caji mai ƙarfi mai ƙarfi daga firikwensin piezoelectric zuwa siginonin ƙaranci na halin yanzu ko ƙarfin lantarki. Yana goyan bayan hanyoyin fitarwa guda biyu:
2-Wayar Waya ta Yanzu: Yana fitar da siginar daidaitaccen siginar 4-20 mA tare da matsakaicin matsakaicin kewayon ± 5 mA da quiescent halin yanzu na 12 mA. Mafi dacewa don watsa nisa (har zuwa kilomita 1) tare da ƙaƙƙarfan rigakafin amo.
3-Wire Voltage Transmission: Yana fitar da siginar daidaitaccen siginar 0-10 V tare da matsakaicin matsakaicin ƙarfi na ± 5 V da ƙarfin wutan lantarki na 7.5 V. Ƙarfin fitarwa shine 750 Ω, yana sa ya dace da gajeren nisa, ma'auni mai mahimmanci.
2. Ayyukan Tace Mai Tsafi
Na'urar tana da matattarar matattarar maɗaukakin wucewa (HPF) da matattarar ƙarancin wucewa (LPF), ba da damar masu amfani don zaɓar mitocin yankewa bisa buƙatun aikace-aikacen:
Tace Mai Girma: Yana ba da mitoci guda biyar (0.5, 1, 2, 5, da 10 Hz a wurin -3 dB), kowanne tare da gangara na 24 dB/octave (tsari na huɗu).
Tacewar Ƙarƙashin Ƙira: Yana ba da mitoci guda bakwai (200, 500, 1000, 2000, 5000, 10000, and 20000 Hz a -1 dB point), kowanne tare da gangara na 12 dB/octave (tsari na biyu).
3. Aikin Haɗin kai na zaɓi
Ana iya haɗa IPC704 tare da mai haɗawa don canza siginar hanzari zuwa siginonin sauri, yana sa ya dace da ma'aunin saurin girgiza. Bambancin lokaci tsakanin haɓakawa da abubuwan saurin gudu shine 90°.
4. Daidaituwar Muhalli da Ƙimar Kariya
Yanayin Aiki: -30°C zuwa +85°C
Ajiya Zazzabi: -40°C zuwa +85°C
Humidity: Har zuwa 95% (ba mai haɗawa)
Ƙimar Kariya:
Sigar asali: IP40
Sigar Gidajen Masana'antu (Option G1): IP66, tare da kyakkyawan juriya ga sinadarai (ruwa, acid, alkalis, fetur, da mai)
5. Takaddun Takaddun Takaddun Fashewa
Ana samun IPC704 a cikin ƙwararrun ƙwararrun fashe-fashe don mahalli masu haɗari:
Ex i Intrinsic Safety: Ya dace da Yanki 1/2 (an tabbatar a Turai, Arewacin Amurka, IECEx, China NEPSI, da Koriya KGS)
Ex nA Non-Sparking: Ya dace da Yanki 2 (an tabbatar a Turai, Arewacin Amurka, da IECEx)
6. Sassauci na shigarwa
Daidaitaccen gidaje na aluminum (mai sarrafa wutar lantarki)
Gidajen polyester na masana'antu (Zaɓi G1)
DIN dogo hawa adaftan (Option G2)
Zaɓuɓɓukan haɗin kebul da yawa (M16, PG9, M20, da sauransu)
7. Halayen Lantarki
Ƙarfin wutar lantarki: 18-30 VDC, matsakaicin halin yanzu 25 mA
Kuskuren layi: ≤0.2%
Tsawon Zazzabi: Matsakaicin ƙimar 100 ppm/°C
Matsakaicin Rage Shigarwa: Har zuwa pC 100,000 (kololuwar)
Ƙa'idar Aiki
Ƙarfafa Cajin da Ƙaƙwalwar Sigina
Jigon IPC704 babban madaidaici ne, tsarin haɓaka caji mai girma wanda aka ƙera don magance ƙalubalen ƙalubalen watsa sigina daga firikwensin piezoelectric. Kayayyakin Piezoelectric suna haifar da caji daidai gwargwado ga damuwa na inji (kamar girgiza, tasiri, ko canjin matsa lamba). Duk da haka, wannan siginar caji yana da babban cikas kuma yana da saurin kamuwa da ƙarfin kebul, tsangwama na lantarki, da hayaniyar muhalli, wanda ke haifar da raguwar sigina, murdiya, da rage siginar-zuwa amo.
IPC704 tana magance waɗannan batutuwa ta hanyar sarkar sigina da aka ƙera a hankali, wacce ke aiki a cikin matakai masu zuwa:
1. Matsayin Shigarwa da Ƙarfafa Cajin
Matakin shigarwa yana amfani da ƙirar ƙararrawar caji mai ban sha'awa tare da matsananciyar shigarwa mai girma (≥50 kΩ) da ƙarancin fitarwa. Wannan ƙira yana rage tasirin lodi akan tushen siginar, yana kiyaye amincin sigina. Amplifier na caji ainihin da'irar amplifier ce mai aiki tare da ra'ayi mai ƙarfi, inda ƙarfin fitarwa ya yi daidai da cajin shigarwar.
Lokacin da siginar caji daga firikwensin piezoelectric ke watsa ta hanyar kebul zuwa shigarwar IPC704, amplifier cajin yana tara wannan cajin akan ƙarfin amsawa kuma ya canza shi zuwa siginar ƙarfin lantarki daidai. Ana iya daidaita rabon juzu'i (hankali) a waje, kama daga 0.1 zuwa 50 mV/pC ko μA/pC, dangane da nau'in firikwensin da buƙatun aunawa. Wannan ƙirar ba wai kawai tana ba da jujjuya sigina ba amma kuma tana aiki azaman mai canza ma'amala, tana mai da tushen caji mai ƙarfi zuwa tushen wutar lantarki mai ƙarancin ƙarfi, aza harsashin sarrafa siginar na gaba.
2. Tsarin tacewa
IPC704 yana fasalta tsarin tacewa mai daidaitawa sosai, gami da babban wucewa (HPF) da matattarar ƙarancin wucewa (LPF), ƙyale masu amfani su zaɓi mitoci masu dacewa don takamaiman aikace-aikace.
Babban Tace Mai Haɓakawa (HPF) yana amfani da tsari na huɗu na Butterworth ko Chebyshev ƙirar tacewa, yana ba da juzu'i na 24 dB/octave. Waɗannan masu tacewa suna ba da zaɓuɓɓukan mitar yankewa guda biyar (0.5, 1, 2, 5, da 10 Hz a wurin -3 dB), da farko ana amfani da su don kawar da ƙaramar ƙarar ƙararrawa da abubuwan gyara DC. A cikin ma'aunin girgiza, tsarin injina galibi suna nuna ƙarancin mitoci kaɗan da tasirin zafin jiki, waɗanda zasu iya mamaye kewayo mai ƙarfi kuma mai yuwuwar haifar da jikewar amplifier. HPF tana kawar da waɗannan tsangwama yadda ya kamata yayin kiyaye mitar abubuwan ban sha'awa.
Ƙarƙashin Ƙarƙashin Ƙira (LPF) yana amfani da tsari na biyu tare da jujjuyawar 12 dB / octave, yana ba da zaɓuɓɓukan mitar yankewa guda bakwai daga 200 zuwa 20,000 Hz (a -1 dB batu). Ana amfani da waɗannan matatun ne musamman don hana hana amo da ƙara yawan amo. A cikin tsarin sayan bayanai, bandwidth na sigina dole ne a iyakance gwargwadon ka'idar samfurin Nyquist don hana karkatar da mitoci. Bugu da ƙari, LPF yana danne tsangwama mai girma kamar tsangwama ta mitar rediyo (RFI) da sauya amo, inganta ingancin sigina.
Zaɓin tacewa yana buƙatar yin la'akari da kyau game da halayen mitar abin da aka auna, ƙimar samfur, da yanayin hayaniya. Zaɓuɓɓukan da yawa da IPC704 ke bayarwa suna ba masu amfani damar haɓaka aikin tsarin.
3. Aikin Haɗin kai (Na zaɓi)
Don aikace-aikacen da ke buƙatar auna saurin girgiza, IPC704 yana ba da aikin haɗakarwa na zaɓi. Mai haɗawa yana jujjuya siginonin hanzari zuwa siginonin sauri ta hanyar haɗakar lissafi. A zahiri, hanzari shine abin da aka samo daga sauri, don haka wannan tsarin jujjuya yana buƙatar haɗe-haɗe.
Mai haɗawa ta IPC704 yana amfani da madaidaicin ƙirar da'irar haɗakarwa ta analog, yawanci ta dogara ne akan ma'auni mai aiki da tsarin ƙarfin amsawa. Wannan ƙira yana ba da halayen haɗin kai sosai akan madaidaicin madauri mai faɗi, yana tabbatar da ingantaccen juzu'i daga hanzari zuwa sauri. Tsarin haɗin kai yana gabatar da jinkirin lokaci na 90 °, daidai da kaddarorin ilmin lissafi na haɗin kai: don siginar sinusoidal, haɗin kai ya dace da canjin lokaci na 90 °.
Ayyukan mai haɗawa yana da amfani musamman ga aikace-aikacen da aka mayar da hankali kan makamashin girgiza (daidai da murabba'in saurin gudu) maimakon 单纯的 ƙimar haɓakawa, kamar saka idanu na yanayin injiniya da bincike na gajiya.
4. Zane-zane na Mataki na fitarwa
IPC704 yana ba da saitunan fitarwa guda biyu don saduwa da buƙatun yanayin aikace-aikacen daban-daban:
Waya na yanzu na 2-waya yana amfani da madaidaicin madaidaicin madaidaicin masana'antu na yanzu na 4-20mA, tare da matsakaicin matsakaicin kewayon ± 5 mA da quiescent halin yanzu na 12 mA. Wannan ƙira yana ba da kyakkyawan rigakafin amo da damar watsa nisa mai nisa. Sigina na yanzu ba su da hankali ga juriya na kebul da inductance, suna ba da damar watsawa zuwa na'urorin karɓar har zuwa nisan kilomita 1 ba tare da ƙaranci mai mahimmanci ba. Bugu da ƙari, madaukai na yanzu suna ba da kariya ta gajeren lokaci, haɓaka amincin tsarin.
Wayar wutar lantarki ta 3-waya tana ba da siginar daidaitaccen ƙarfin lantarki na 0-10 V, tare da matsakaicin matsakaicin ƙarfi na ± 5 V, ƙarfin wutan lantarki na 7.5 V, da ƙarancin fitarwa na 750 Ω. Fitowar wutar lantarki ya dace da gajeriyar nisa, ma'aunin ma'auni mai girma kuma ana iya haɗa shi kai tsaye zuwa yawancin tsarin sayan bayanai da na'urorin shigar da analog na PLC. Yanayin wutar lantarki yana ba da bandwidth na sigina mafi girma da saurin daidaitawa, yana mai da shi dacewa da ma'auni mai ƙarfi mai ƙarfi.
Duk hanyoyin fitarwa biyu sun haɗa da madaidaicin da'irorin direbobi don tabbatar da babban layi da kwanciyar hankali yayin watsa sigina.
5. Injin Kariya na RFI/EMI
IPC704 sanye take da tsangwama na mitar rediyo na LC mai ma'ana (RFI) a duka shigarwa da fitarwa. An ƙera waɗannan matatun musamman don murkushe tsangwama mai ƙarfi na lantarki, gami da tsangwama ta mitar rediyo, ƙarar wutar lantarki, da hayaniyar kewayawa na dijital. Tace masu tacewa na RFI suna amfani da madaidaicin ƙira, suna ba da kariya daga tsangwama-banbanci da yanayin gama-gari, suna kare mutuncin sigina.
Kariyar RFI a matakin shigarwa yana da mahimmanci musamman saboda siginar firikwensin piezoelectric suna da rauni sosai kuma suna da saurin kamuwa da filayen lantarki na waje. Tace RFI a matakin fitarwa yana tabbatar da cewa siginar fitarwa bai gurbata ta hanyar kebul na gaba da hayaniyar muhalli ba.
6. Kula da Halayen Mataki
IPC704 a hankali yana kula da daidaiton lokaci cikin jerin siginar:
Haɗawa da fitarwa na matsa lamba suna kiyaye dangantakar lokaci 180° tare da siginar shigarwa.
Fitowar saurin gudu yana riƙe da bambance-bambancen lokaci na 90° tare da fitowar hanzari (daidai da alaƙar haɗin kai).
Wannan daidaiton lokaci yana da mahimmanci don ma'aunin tashoshi da yawa, bincike mai saurin lokaci, da haɗin tsarin sarrafawa.
7. Gudanar da Wuta da Kwanciyar hankali
Na'urar tana aiki daga 18-30 VDC mai fa'idar samar da wutar lantarki kuma ya haɗa da ingantaccen tsarin wutar lantarki da da'irori masu tacewa. Tsarin sarrafa wutar lantarki yana tabbatar da tsayayyen ƙarfin aiki a ƙarƙashin yanayi irin ƙarfin lantarki na shigarwa daban-daban yayin da yake murkushe hayaniya da ripple akan layin wutar lantarki. Kyakkyawan ƙirar wutar lantarki shine tushen ingantaccen aikin na'urar, tare da kwanciyar hankali yawanci yana kaiwa 100 ppm/°C, yana tabbatar da daidaiton aiki a yanayin yanayin muhalli daban-daban.
Nau'in Sensor masu jituwa
IPC704 tana goyan bayan nau'ikan na'urori masu auna firikwensin kayan aikin piezoelectric guda biyu:
Daidaitaccen Kayan Wutar Lantarki (misali, CAxxx, CP10x, CP2xx)
GaPO₄ Piezoelectric Materials (misali, CP50x)
Kowane nau'i yana da daidaitattun lambobi da zaɓuɓɓukan sanyi don tabbatar da dacewa da aiki mafi kyau. GaPO₄ na'urori masu auna firikwensin suna ba da yanayin yanayin aiki mafi girma da kwanciyar hankali mafi kyau, yana sa su dace da aikace-aikacen yanayi mai tsauri.
Yankunan aikace-aikace
Kulawa da Injinan Juyawa: Kula da rawar jiki na injin tururi, compressors, famfo, da magoya baya
Jirgin sama: Gwajin girgiza injin, sa ido kan lafiyar tsarin
Masana'antar Makamashi: Kula da yanayin makaman nukiliya, wutar lantarki, da kayan aikin wutar lantarki
Automation Masana'antu: Ma'aunin matsi mai ƙarfi a cikin sarrafa tsari
Gwajin R&D: Samun sigina mai ƙarfi mai ƙarfi a cikin dakunan gwaje-gwaje
