CET-DQ601B Charge Amplifier
Kufotokozera Kwachidule:
Tsatanetsatane wa Zamalonda
Zolemba Zamalonda
Ntchito mwachidule
Chithunzi cha CET-DQ601B
charge amplifier ndi chowonjezera chacharge amplifier chomwe mphamvu yake yotulutsa imakhala yolingana ndi mtengo wolowera.Zokhala ndi masensa a piezoelectric, zimatha kuyeza kuthamanga, kuthamanga, mphamvu ndi zina zamakina azinthu.Amagwiritsidwa ntchito kwambiri posungira madzi, mphamvu, migodi, mayendedwe, zomangamanga, zivomezi, zakuthambo, zida ndi madipatimenti ena.Chida ichi chili ndi izi.
1) .Mapangidwewa ndi omveka, dera limakongoletsedwa, zigawo zikuluzikulu ndi zolumikizira zimatumizidwa kunja, zolondola kwambiri, phokoso laling'ono komanso kugwedezeka kwazing'ono, kuti zitsimikizire khalidwe lokhazikika komanso lodalirika la mankhwala.
2).Pochotsa kulowetsedwa kwa mphamvu yofanana ya chingwe cholowera, chingwecho chikhoza kuwonjezeredwa popanda kukhudza kulondola kwa kuyeza.
3) kutulutsa 10VP 50mA.
4) .Thandizani 4,6,8,12 njira (ngati mukufuna), DB15 gwirizanitsani linanena bungwe, voteji yogwira ntchito: DC12V.
Mfundo ya ntchito
CET-DQ601B charge amplifier imapangidwa ndi siteji yosinthira, siteji yosinthira, zosefera zotsika, zosefera zodutsa, siteji yomaliza yamagetsi amplifier ndi magetsi.Th:
1）.Charge kutembenuka siteji: ndi ntchito amplifier A1 monga pachimake.
CET-DQ601B charge amplifier imatha kulumikizidwa ndi piezoelectric acceleration sensor, piezoelectric force sensor ndi piezoelectric pressure sensor.Chikhalidwe chodziwika bwino cha iwo ndikuti kuchuluka kwamakina kumasinthidwa kukhala mtengo wofooka Q womwe umagwirizana nawo, ndipo kutulutsa kwa impedance RA ndikokwera kwambiri.Gawo losinthira ndalama ndikusinthira chiwongolerocho kukhala voteji (1pc / 1mV) yomwe imagwirizana ndi chiwongola dzanja ndikusintha kutulutsa kwakukulu kukhala kocheperako.
Ca --- Kuthekera kwa sensor nthawi zambiri kumakhala masauzande angapo a PF, 1 / 2 π Raca imatsimikizira malire otsika otsika a sensor.
Cc-- Sensor linanena bungwe low phokoso chingwe capacitance.
Ci--Input capacitance of operational amplifier A1, mtengo wamba 3pf.
Gawo losinthira ma charger A1 limagwiritsa ntchito Amplifier yaku America yophatikizika ya Precision Operational Amplifier yokhala ndi zopinga zambiri, phokoso lotsika komanso kutsika pang'ono.The feedback capacitor CF1 ili ndi magawo anayi a 101pf, 102pf, 103pf ndi 104pf.Malinga ndi chiphunzitso cha Miller, kuthekera kosinthika kosinthika kuchokera ku mphamvu yakuyankha kupita pakulowetsa ndi: C = 1 + kcf1.Kumene k ndiko kupindula kotseguka kwa A1, ndipo mtengo wake ndi 120dB.CF1 ndi 100pF (ochepera) ndipo C ndi pafupifupi 108pf.Pongoganiza kuti cholowera chotsika phokoso chingwe kutalika kwa sensa ndi 1000m, CC ndi 95000pf;Pongoganiza kuti sensor CA ndi 5000pf, mphamvu yonse ya caccic yofanana ndi pafupifupi 105pf.Poyerekeza ndi C, mphamvu yonse ndi 105pf / 108pf = 1 / 1000. Mwa kuyankhula kwina, sensa yokhala ndi 5000pf capacitance ndi 1000m linanena bungwe chingwe chofanana ndi mayankho capacitance idzangokhudza kulondola kwa CF1 0.1%.The linanena bungwe voteji wa siteji kutembenuka mlandu ndi linanena bungwe sensa Q / ndemanga capacitor CF1, kotero kulondola kwa linanena bungwe voteji amakhudzidwa ndi 0.1%.
The linanena bungwe voteji wa siteji mlandu kutembenuka ndi Q / CF1, kotero pamene capacitors ndemanga ndi 101pf, 102pf, 103pf ndi 104pf, linanena bungwe voteji ndi 10mV / PC, 1mV / PC, 0.1mv/pc ndi 0.01mv/pc motero.
2).Mulingo wosinthika
Amakhala ndi ntchito amplifier A2 ndi sensa sensitivity kusintha potentiometer W. Ntchito ya siteji imeneyi ndi kuti pamene ntchito piezoelectric masensa ndi sensitivities zosiyanasiyana, chida chonsecho ali normalized voteji linanena bungwe.
3).sefa yotsika yotsika
Wachiwiri kuti Butterworth yogwira mphamvu fyuluta ndi A3 monga pachimake ali ubwino wa zigawo zikuluzikulu, kusintha yabwino ndi lathyathyathya passband, amene angathe kuthetsa chikoka cha mkulu-pafupipafupi kusokoneza zizindikiro pa zizindikiro zothandiza.
4)).
Fyuluta yoyamba yopita patsogolo yopangidwa ndi c4r4 imatha kupondereza chikoka cha ma siginecha otsika pafupipafupi pazizindikiro zothandiza.
5)
Ndi A4 monga pachimake cha phindu II, kutulutsa chitetezo chafupipafupi, kulondola kwambiri.
6).Mulingo wochulukira
Ndi A5 ngati pachimake, mphamvu yotulutsa ikakhala yayikulu kuposa 10vp, LED yofiyira pagawo lakutsogolo idzawala.Panthawiyi, chizindikirocho chidzachepetsedwa ndi kupotozedwa, kotero kuti phindu liyenera kuchepetsedwa kapena cholakwika chiyenera kupezeka.
Zosintha zaukadaulo
1) Khalidwe lolowetsa: mtengo wolowera kwambiri ± 106Pc
2) Kumverera: 0.1-1000mv / PC (- 40 '+ 60dB pa LNF)
3) Kusintha kwa Sensor Sensitivity: 3 digit turntable imasintha mphamvu ya sensor 1-109.9pc / unit (1)
4) Kulondola:
LMV / unit, lomy / unit, lomy / unit, 1000mV / unit, pomwe mphamvu yofananira ya chingwe cholowera ndi yochepera lonf, 68nf, 22nf, 6.8nf, 2.2nf, 2.2nf motsatana, lkhz mawonekedwe (2) ndi ochepera ± The oveteredwa chikhalidwe ntchito (3) ndi zosakwana 1% ± 2％.
5) Zosefera ndi kuyankha pafupipafupi
a) Fyuluta yapamwamba;
M'munsi malire pafupipafupi ndi 0.3, 1, 3, 10, 30 ndi loohz, ndi zololeka kupatuka ndi 0.3hz, - 3dB_ 1 ．5dB; l.3, 10, 30, 100Hz, 3dB ± LDB, otsetsereka: - 6dB / machira.
b) fyuluta yotsika;
Chapamwamba malire pafupipafupi: 1, 3, lo, 30, 100kHz, BW 6, chololeka kupatuka: 1, 3, lo, 30, 100khz-3db ± LDB, attenuation otsetsereka: 12dB / Oct.
6) zotuluka khalidwe
a) Kuchulukira kwakukulu: ± 10Vp
b) Kutulutsa kwakukulu kwapano: ± 100mA
c) Kukana kwapang'ono kochepa: 100Q
d) Kusokoneza kwa Harmonic: zosakwana 1% pamene mafupipafupi ndi otsika kuposa 30kHz ndipo katundu wa capacitive ndi wosakwana 47nF.
7) Phokoso:<5 UV (kupindula kwakukulu ndikofanana ndi kulowetsa)
8) Chizindikiro chochulukirachulukira: chiwongola dzanja chimaposa I ± ( Pa 10 + O.5 FVP, LED imayatsidwa pafupifupi masekondi awiri.
9) Kutentha nthawi: pafupifupi mphindi 30
10) Mphamvu: AC220V ± 1O％
njira yogwiritsira ntchito
1. athandizira impedance wa charge amplifier ndi apamwamba kwambiri.Pofuna kupewa kuti thupi la munthu kapena voteji yakunja iwonongeke kuti isagwetse amplifier, magetsi ayenera kuzimitsidwa polumikiza sensa ndi cholumikizira cha amplifier kapena kuchotsa sensa kapena kukayikira kuti cholumikizira ndi chotayirira.
2. ngakhale chingwe chachitali chikhoza kutengedwa, kufalikira kwa chingwe kudzayambitsa phokoso: phokoso lachibadwa, kusuntha kwamakina ndi kuchititsa phokoso la AC la chingwe.Choncho, poyezera pa malo, chingwecho chiyenera kukhala phokoso lochepa ndi kufupikitsa momwe zingathere, ndipo chiyenera kukhazikitsidwa komanso kutali ndi zida zazikulu zamagetsi.
3. kuwotcherera ndi msonkhano wa zolumikizira ntchito masensa, zingwe ndi amplifiers mlandu ndi akatswiri kwambiri.Ngati ndi kotheka, amisiri apadera adzachita kuwotcherera ndi msonkhano;Rosin anhydrous ethanol solution flux (mafuta akuwotcherera ndi oletsedwa) amagwiritsidwa ntchito kuwotcherera.Pambuyo kuwotcherera, mpira wa thonje wachipatala udzakhala wokutidwa ndi mowa wa anhydrous (mowa wachipatala ndi woletsedwa) kuti upukuta kutulutsa ndi graphite, ndiyeno uume.Cholumikiziracho chizikhala chaukhondo komanso chowuma pafupipafupi, ndipo chipewa chotchinga chizikulungidwa ngati sichikugwiritsidwa ntchito
4. pofuna kutsimikizira kulondola kwa chipangizocho, kutenthedwa kumayenera kuchitidwa kwa mphindi 15 musanayambe kuyeza.Ngati chinyezi chikupitilira 80%, nthawi yotenthetsera iyenera kupitilira mphindi 30.
5. Yankho lamphamvu la gawo lotulutsa: limawonetsedwa makamaka pakutha kuyendetsa katundu wa capacitive, omwe amawerengedwa ndi njira iyi: C = I / 2 л Mu vfmax formula, C ndi mphamvu ya katundu (f);Ine linanena bungwe siteji linanena bungwe mphamvu panopa (0.05A);V nsonga yotulutsa mphamvu (10vp);Mafupipafupi ogwiritsira ntchito Fmax ndi 100kHz.Chifukwa chake mphamvu yayikulu kwambiri ndi 800 PF.
6).Kusintha kwa knob
(1) Sensor sensitivity
(2) Phindu:
(3) Kupeza II (kupindula)
(4) - 3dB malire otsika pafupipafupi
(5) Kuchuluka kwafupipafupi kumtunda malire
(6) Kuchulukitsitsa
Mphamvu yotulutsa ikakhala yayikulu kuposa 10vp, kuwala kochulukirapo kumawunikira kuti wogwiritsa ntchitoyo asokonezeke.Phindu liyenera kuchepetsedwa kapena.cholakwikacho chiyenera kuthetsedwa
Kusankha ndi kukhazikitsa masensa
Monga kusankha ndi kuyika kwa sensa kumakhudza kwambiri kulondola kwa kuyeza kwa amplifier, zotsatirazi ndizofotokozera mwachidule: 1. Kusankhidwa kwa sensa:
(1) Voliyumu ndi kulemera kwake: monga kuchuluka kowonjezera kwa chinthu choyezedwa, sensa imakhudza mosavutikira kayendedwe kake, kotero ma mass ma sensor amayenera kukhala ocheperako kuposa ma mita a chinthu choyezedwa.Kwa zigawo zina zoyesedwa, ngakhale kuti misa ndi yayikulu yonse, kuchuluka kwa sensa kumatha kufananizidwa ndi misa yam'deralo ya kapangidwe kake m'magawo ena a unsembe wa sensa, monga zomangira zowonda-mipanda, zomwe zingakhudze malo amderalo. mayendedwe mkhalidwe kamangidwe.Pankhaniyi, voliyumu ndi kulemera kwa sensa ziyenera kukhala zazing'ono momwe zingathere.
(2) Kuyika kwa resonance pafupipafupi: ngati kuyesedwa kwa ma frequency ndi f, ma frequency a resonance akuyenera kukhala akulu kuposa 5F, pomwe kuyankha pafupipafupi komwe kumaperekedwa m'buku la sensa ndi 10%, komwe kuli pafupifupi 1/3 ya resonance. pafupipafupi.
(3) Kumverera kwacharge: kukulirapo kumakhala bwinoko, komwe kumatha kuchepetsa kuchulukitsa kwa amplifier, kuwongolera chiŵerengero cha siginecha ndi phokoso ndikuchepetsa kusuntha.
2), Kuyika kwa masensa
(1) Kulumikizana pamwamba pakati pa sensa ndi gawo loyesedwa lidzakhala loyera komanso losalala, ndipo kusagwirizana kudzakhala kochepa kuposa 0.01mm.Mzere wa dzenje loyikira zomangira uyenera kukhala wogwirizana ndi njira yoyesera.Ngati malo okwera ndi ovuta kapena ma frequency omwe amayezedwa amaposa 4kHz, mafuta ena oyera a silikoni angagwiritsidwe ntchito pamalo olumikizirana kuti apititse patsogolo kulumikizana pafupipafupi.Poyezera momwe zimakhudzira, chifukwa kugunda kwamphamvu kumakhala ndi mphamvu yayikulu yosakhalitsa, kulumikizana pakati pa sensa ndi kapangidwe kake kuyenera kukhala kodalirika kwambiri.Ndi bwino kugwiritsa ntchito mabawuti zitsulo, ndi unsembe makokedwe ndi za 20kg.Cm.Kutalika kwa bolt kuyenera kukhala koyenera: ngati kuli kochepa kwambiri, mphamvu sikwanira, ndipo ngati ndi yayitali kwambiri, kusiyana pakati pa sensa ndi kapangidwe kake kakhoza kusiyidwa, kuuma kumachepetsedwa, ndipo mafupipafupi a resonance. adzachepetsedwa.Bolt sayenera kulowetsedwa mu sensa kwambiri, apo ayi ndege yoyambira idzapindika ndipo kukhudzidwa kudzakhudzidwa.
(2) Insulation gasket kapena kutembenuza chipika chiyenera kugwiritsidwa ntchito pakati pa sensa ndi gawo loyesedwa.The resonance pafupipafupi gasket ndi kutembenuka chipika ndi apamwamba kwambiri kuposa kugwedera pafupipafupi dongosolo, apo ayi latsopano resonance pafupipafupi adzawonjezedwa dongosolo.
(3) Nthambi yowopsya ya sensa iyenera kukhala yogwirizana ndi kayendetsedwe ka kayendetsedwe ka gawo loyesedwa, apo ayi kutengeka kwa axial kudzachepa ndipo mphamvu yodutsa idzawonjezeka.
(4) Kuwombera kwa chingwe kumapangitsa kuti pakhale kusagwirizana komanso phokoso lopanda phokoso, kotero njira yotsogolera ya sensa iyenera kukhala pafupi ndi kayendetsedwe ka chinthucho.
(5) Chitsulo bawuti kugwirizana: zabwino pafupipafupi kuyankha, wapamwamba unsembe resonance pafupipafupi, akhoza kusamutsa mathamangitsidwe lalikulu.
(6) Kulumikizana kwa bolt: sensor imasungidwa kuchokera kugawo kuti iyesedwe, yomwe ingalepheretse kukhudzidwa kwa gawo lamagetsi pamiyeso.
(7) Kulumikizana kwa maziko a maginito okwera: maginito oyika maziko atha kugawidwa m'mitundu iwiri: kutchinjiriza pansi komanso kusabisala pansi, koma sikoyenera pamene mathamangitsidwe amaposa 200g ndipo kutentha kumapitilira 180.
(8) Kumangirira sera wosanjikiza: njira iyi ndi yosavuta, yabwino pafupipafupi kuyankha, koma osati kutentha kwambiri.
(9) Kulumikizana kwa bawuti: bawutiyo imamangirizidwa koyamba ndi kapangidwe kake kuti iyesedwe, ndiyeno sensa imalumikizidwa.Ubwino wake sikuwononga kapangidwe kake .
(10) Zomangira wamba: epoxy resin, madzi a rabara, guluu 502, etc.
Zowonjezera zida ndi zikalata zomwe zikuphatikizidwa
1).Mzere umodzi wamagetsi wa AC
2).Buku logwiritsa ntchito limodzi
3).1 kopi ya data yotsimikizira
4).Kope limodzi la mndandanda wazolongedza
7, Thandizo laukadaulo
Chonde titumizireni ngati pali kulephera kulikonse panthawi ya kukhazikitsa, kugwira ntchito kapena nthawi ya chitsimikizo yomwe singasungidwe ndi injiniya wamagetsi.
Zindikirani: Gawo lakale la CET-7701B lidzayimitsidwa kuti ligwiritsidwe ntchito mpaka kumapeto kwa 2021 (Dec 31th.2021), kuyambira pa Jan 1, 2022, tisintha kukhala gawo latsopano la CET-DQ601B.