IPC707 244-707-000-012 Siginar Kwandishan

IPC707 babban aiki ne, na'urar kwandishan sigina mai daidaitawa sosai daga layin samfurin VM, musamman an ƙera don amfani tare da firikwensin piezoelectric. Babban aikinsa shi ne canza fitarwar caji daga na'urori masu auna firikwensin piezoelectric zuwa daidaitattun sigina na halin yanzu ko ƙarfin lantarki, yana sa ya dace da tsarin girgizawa da tsarin ma'aunin matsa lamba, musamman a cikin sa ido kan amincin masana'antu da aikace-aikacen sa ido kan yanayin. IPC707 ba wai kawai yana ba da kyakkyawan damar sarrafa siginar ba amma kuma yana goyan bayan ayyuka daban-daban na tacewa da bincike, saduwa da buƙatun dogaro da yawa a cikin mahallin masana'antu masu rikitarwa. A matsayin ingantaccen maye gurbin samfurin IPC704, IPC707 yana nuna gagarumin ci gaba a cikin aiki, aiki, da aminci.

Mabuɗin Bambanci Tsakanin IPC707 da IPC704

¹ Lura: dB/octave zuwa dB/canzawar shekaru goma yana da ƙima don kwatantawa.

Mabuɗin Siffofin da Halaye

1 Faɗin Daidaituwar Sensor

An tsara IPC707 don amfani tare da CAxxx jerin piezoelectric accelerometers da CPxxx jerin firikwensin matsa lamba mai ƙarfi, yayin da kuma ya dace da sauran na'urori masu auna firikwensin piezoelectric waɗanda ke nuna halayen fitarwa na banbanta (simmetrical). Yana iya yin mu'amala tare da na'urori masu auna filaye biyu da na'urorin da aka keɓe. Duk da yake kama da IPC704 a wannan fannin, IPC707 yana da ƙarin takamaiman buƙatu masu tsauri don shigar da halayen lantarki, musamman lokacin amfani da ayyukan binciken sa.

2 Kanfigareshan Canja wurin Mai Sauƙi

• pC zuwa μA: Ya dace da watsa siginar nesa mai nisa (tsarin waya 2)

• pC zuwa mV: Ya dace da watsa siginar gajeriyar nisa (tsarin waya 3)

• Mai haɗawa na zaɓi: Yana canza siginonin hanzari zuwa siginonin sauri, faɗaɗa iyakokin aikace-aikace

IPC707 yana ba da mafi girman kewayon saurin canja wuri (ba tare da mai haɗawa ba: 0.1 zuwa 110 μA / pC ko mV / pC; tare da mai haɗawa: 981 zuwa 98,100 μA / pC · s ko mV / pC · s) kuma yana ba da ƙarin daidaitattun zaɓuɓɓukan ƙimar ƙimar idan aka kwatanta da IPC704: 0dard abu zuwa kayan 0dard. 0.1 zuwa 50).

3 Tace masu iya daidaitawa

• Tace mai girma (HP): oda na 3 Butterworth tace tare da mitar yanke zaɓaɓɓu daga 0.5 Hz zuwa 20 Hz (mafi ƙarancin 1 Hz lokacin da aka kunna bincike), gangara ~ 60 dB / shekaru goma

• Tace mai ƙarancin wucewa (LP): oda na 3 Butterworth tace tare da mitoci masu zaɓin yankewa daga 200 Hz zuwa 20 kHz, gangara ~ 60 dB/ shekaru goma

Za'a iya saita masu tacewa ba tare da aikin canja wuri ba, yana bawa masu amfani damar keɓancewa bisa ga ainihin buƙatu. Idan aka kwatanta da IPC704 (HP a matsayin oda na 4 24 dB/octave, LP a matsayin oda na 2 12 dB/octave), IPC707 yana fasalta madaidaitan tacewa tare da halaye masu tsayi don ingantaccen aikin tacewa.

4 Gina-in-Aikin Bincike (BITE) - Sabon Babban Siffar IPC707

• Ci gaba da lura da matsayin firikwensin, igiyoyi, da kwandishan kanta

• Yana nuna matsayin tsarin ta hanyar ƙimar son zuciya na siginar fitarwa:

• Abubuwan fitarwa na yanzu: Na al'ada a 13mA, Laifin firikwensin / kebul a 11mA, kuskuren kwandishan a 10mA

• Fitowar wutar lantarki: Na al'ada a 8V, Laifin firikwensin / kebul a 6V, kuskuren kwandishan a 5V

• Wannan aikin yana sa IPC707 ya dace da tsarin aminci na aiki, yana bin ka'idodin IEC 61508 SIL 2 da ISO 13849 PL c Cat 1. Wannan babban aiki ne da ba ya nan a cikin IPC704 kuma yana wakiltar ɗayan mahimman fa'idodin IPC707.

5 dacewa ga Muhalli masu haɗari

• Akwai a cikin nau'ikan bokan da ke tabbatar da fashewa daban-daban gami da:

• Ex ia: Amintaccen ciki, dace da Yanki 0/1/2

• Ex ec/Ex nA: Ƙara aminci/rashin haskakawa, dace da Yanki 2

• Takaddun shaida sun ƙunshi yankuna da yawa ciki har da Turai (ATEX), International (IECEx), Arewacin Amurka (cCSAus), Koriya ta Kudu, UK, Rasha, Brazil, da China. Yayin da IPC704 kuma tana ba da nau'ikan tabbatar da fashewa (Ex ib, Ex nA), tsarin ba da takaddun shaida na IPC707 ya fi cikakke kuma na zamani, yana rufe ƙarin yankuna da mafi tsauri mai ƙarfi Zone 0.

6 Injiniyanci da Zane-zane

• Gidajen da aka yi da aluminium mai allura tare da ƙimar kariya ta IP40 (don amfanin cikin gida). Ana iya haɓaka matakin kariya ta amfani da gidajen masana'antu ABA17x.

• Yana goyan bayan hawan dunƙule ko hawan dogo na DIN ( adaftar MA130 na zaɓi, mai dacewa da IPC704).

• Masu haɗa dunƙule-tasha masu cirewa (masu shigarwa 4/4 lambobin fitarwa kowace) sauƙaƙe shigarwa da kiyayewa. IPC704 yana da tsayayyen dunƙule tashoshi 3.

7 Halayen Lantarki

• Wutar lantarki na samarwa: 18-30 VDC, yawanci 24 VDC

• Amfanin wutar lantarki: Max. 20mA (IPC704: 25mA)

• Wurin shigar da ƙarfi: Har zuwa 50,000 pC (<10 kHz), ɗan ra'ayin mazan jiya fiye da pc704's 100,000 pC, amma an inganta shi don manyan mitoci (10-20kHz) a 25,000 pC.

• Alamun fitarwa:

• fitarwa na yanzu: ± 5 mA kololuwa, impedance> 60 kΩ, quiescent halin yanzu 12 ko 13 mA (tare da bincike)

• Fitar da wutar lantarki: ± 5 V kololuwa, impedance <500 Ω, quiescent ƙarfin lantarki 7.0 ko 8.0 V (tare da bincike)

Cikakken Ƙa'idar Aiki

Babban aikin IPC707 shine canza siginar caji mai ƙarfi mai ƙarfi wanda na'urori masu auna firikwensin piezoelectric ke haifarwa zuwa ƙarancin ƙarfin ƙarfi ko sigina na yanzu, daidaita su don watsa nisa mai nisa zuwa tsarin kulawa. sarrafa siginar sa yana biye da madaidaicin sarkar lantarki:

1. Kariyar shigarwa da Tacewar RFI:
Ana watsa siginar firikwensin ta igiyoyi zuwa shigar da IPC707. Na farko, siginar ta ratsa ta hanyar matatar sadarwa ta LC mai ma'ana. Wannan matattarar tana danne tsangwama na mitar rediyo na waje (RFI) da tsoma baki na lantarki (EMI), yana tabbatar da babban sigina-zuwa amo don da'irori masu zuwa da kuma hana hayaniyar mita mai girma daga gurɓata siginar caji mai rauni. Wannan yana da mahimmanci don auna abin dogaro a cikin mahallin masana'antu.

2. Bambance-bambancen Cajin Amplifier:
Ana ciyar da siginar da aka tace a cikin madaidaicin ƙararrawa na caji. Wannan shine farkon maɓalli na musanya matakan daidaita sigina. Babban aikin amplifier na caji shine don canza siginar caji ta layi kai tsaye (a cikin picocoulombs, pC) wanda firikwensin piezoelectric ke samarwa zuwa siginar ƙarancin ƙarfi. Ƙirar bambance-bambancen tana ba da kyakkyawan rabo na kin amincewa da yanayin gama-gari (CMRR), yadda ya kamata yana murkushe hayaniyar yanayin gama gari (misali, tsangwama na ƙasa) wanda aka gabatar a cikin layin sigina guda biyu yayin watsawa, yana inganta ingantaccen sigina.

3. Sanya Sigina da Tace:
Siginar wutar lantarki daga amplifier ɗin caji sannan ya shiga matakin tacewa mai daidaitawa.

• Filter High-Pass (HPF): Wannan tsari ne na 3 na Butterworth babban matattarar wucewa da ake amfani da shi don cire ƙaramar ƙarar ƙararrawa da abubuwan da ba a so ba na DC daga siginar. Ana iya daidaita mitar yankewa daga 0.5 Hz zuwa 110 Hz. Wannan yana da tasiri sosai don keɓance jinkirin ɗimbin raɗaɗi wanda ya haifar da girgiza tushe ko canje-canjen zafin jiki, tabbatar da siginar fitarwa ya ƙunshi ingantattun abubuwan ma'aunin AC kawai.

• Haɗin Zaɓuɓɓuka: Idan aikace-aikacen yana buƙatar auna gudu maimakon haɓakawa, ana iya kunna da'irar haɗin kai. Mai haɗawa da lissafi yana haɗa siginar hanzari (madaidaicin ƙarfin lantarki zuwa hanzari), yana fitar da siginar ƙarfin lantarki daidai da sauri.

• Tace mai ƙarancin wucewa (LPF): Biyan wannan shine oda na 3 Butterworth matattarar ƙarancin wucewa da ake amfani da ita don tace amo mai girma a cikin sigina da samar da hanawa. Ana iya daidaita mitar yankewa daga 200 Hz zuwa 20,000 Hz. Wannan yana tabbatar da bandwidth na siginar fitarwa yana iyakance ga kewayon mitar sha'awa, yana bin ka'idar samfurin Nyquist, kuma yana shirya sigina don sarrafa dijital na gaba.

4. Haɓaka Matsayin Fitarwa da Haɓakawa:
Ana aika siginar da aka tace zuwa matakin haɓakawa mai daidaitawa, inda aka saita ribar ta bisa ga abin da aka zaɓa na mai amfani. A ƙarshe, siginar ta shiga matakin fitarwa mai daidaitawa:

• Yanayin Fitarwa na Yanzu (waya 2): Matsayin fitarwa yana jujjuya siginar wutar lantarki zuwa sigina mai jujjuyawa (AC) na yanzu wanda aka mamaye akan tsayayyen halin yanzu kai tsaye (DC). Matsakaicin iyaka na yanzu shine ± 5 mA kololuwa, kuma tsayayyen son rai shine yawanci 12 mA. Lokacin da aka kunna bincike, ana canza wannan tsayayyen son zuciya zuwa 13 mA (na al'ada), 11 mA (laifi na kebul), ko 10 mA (laifi na kwandishan). Wannan hanyar watsawa ta yanzu tana da kyau don watsa nisa mai nisa (har zuwa kilomita 1) saboda ba shi da hankali ga juriya na kebul kuma yana da ƙarfin hana tsangwama.

• Yanayin Fitar da Wutar Lantarki (waya 3): Matsayin fitarwa kai tsaye yana ba da siginar wutar lantarki mai sauye-sauye (AC) wanda aka dora akan wutan lantarki na yanzu kai tsaye (DC). Matsakaicin ƙarfin wutar lantarki mai ƙarfi shine ± 5 V kololuwa, kuma tsayayyen son rai shine yawanci 7.0 V. Tare da kunna bincike, an daidaita wannan tsayayyen son rai zuwa 8.0 V (na al'ada), 6.0 V (laifi / na USB), ko 5.0 V (laifi na kwandishan). Watsawar wutar lantarki ya dace da aikace-aikacen gajeriyar nisa.

5. Kariyar Fitarwa da Tacewa:
Kafin siginar ta fito daga ƙarshe, ta wuce ta wani madaidaicin LC cibiyar sadarwa ta RFI, tana ba da kariya ta ƙarshe don siginar fitarwa da kuma hana tsangwama daga waje daga tasirin siginar siginar ta hanyar kebul na fitarwa.

6. Ayyukan Bincike (BITE) Ƙa'ida:
Ayyukan bincike na IPC707 babban mahimmanci ne. Da'irar bincikenta tana ci gaba da lura da halayen lantarki na dukkan sarkar aunawa:

• Sensor da Kulawa na Kebul: Yana kula da juriya na kariya a shigarwar (dole ne> 20 kΩ), ƙarfin kebul (dole ne <15 nF), juriya na jerin kebul (iyaka daban-daban dangane da ƙimar ƙarfin), da juriya na haɗin garkuwa (dole ne <100 mΩ).

• Alamar Laifi: Lokacin da kowane siga ya wuce kewayon da aka saita, da'irar bincike ba ta katse siginar auna amma tana nuna nau'in kuskure ta canza sashin son rai na DC na siginar fitarwa. Tsarin sa ido na sama (misali, VM600) na iya nesa kuma ta atomatik tantance matsayin lafiya na sarkar auna ta ci gaba da sa ido akan wannan bangaren DC, ba da ƙararrawa akan lokaci, ta haka yana ba da damar kiyaye tsinkaya da biyan buƙatun aminci na aiki.

7. Gudanar da Wutar Lantarki:
Dukkanin da'irar ana yin amfani da ita ta hanyar samar da wutar lantarki na 18-30 VDC na waje, tare da na'urorin ciki na ciki suna daidaita shi zuwa ƙarfin aiki da ake buƙata. A cikin aikace-aikacen da ke da alaƙa da aminci, ana buƙatar samar da wutar lantarki don samun amintaccen keɓewa da iyakar ƙarfin lantarki na 40VDC.

Yankunan aikace-aikace

• Tsare-tsaren Kulawa na Jijjiga: Don aunawar girgizawa da kariyar injin juyawa (misali, injin turbines, compressors, famfo).

• Tsarin Kula da Matsi: Ya dace da ma'aunin matsa lamba mai ƙarfi, kamar matsa lamba na konewa, bugun ruwa na ruwa.

• Tsare-tsaren Tsaro na Aiki: Godiya ga ayyukan binciken sa, ana iya amfani da IPC707 a cikin madaukai masu alaƙa da aminci, suna bin ka'idodin SIL 2 da PL c. Wannan aikace-aikacen IPC704 ba zai iya cika kai tsaye ba.

• Kula da Yanayi da Tsabtace Hasashen: Yana haɓaka amincin tsarin da ingantaccen aiki ta hanyar bincike na lokaci-lokaci.