CET-DQ601B Charge Amplifier
Lus piav qhia luv luv:
Enviko charge amplifier yog channel charge amplifier uas nws cov zis voltage yog proportional rau tus nqi input. Nruab nrog piezoelectric sensors, nws tuaj yeem ntsuas qhov nrawm, siab, quab yuam thiab lwm yam khoom siv hluav taws xob.
Nws yog dav siv hauv kev txuag dej, hluav taws xob, mining, tsheb thauj mus los, kev tsim kho, av qeeg, aerospace, riam phom thiab lwm yam haujlwm. Cov cuab yeej no muaj cov yam ntxwv hauv qab no.
Product Detail
Enviko WIM cov khoom
Khoom cim npe
Muaj nuj nqi saib xyuas
CET-DQ601B
charge amplifier yog channel charge amplifier uas nws cov zis voltage yog proportional rau tus nqi input. Nruab nrog piezoelectric sensors, nws tuaj yeem ntsuas qhov nrawm, siab, quab yuam thiab lwm yam khoom siv hluav taws xob. Nws yog dav siv hauv kev txuag dej, hluav taws xob, mining, tsheb thauj mus los, kev tsim kho, av qeeg, aerospace, riam phom thiab lwm yam haujlwm. Cov cuab yeej no muaj cov yam ntxwv hauv qab no.
1) Cov qauv yog tsim nyog, lub Circuit Court yog optimized, lub ntsiab Cheebtsam thiab connectors yog mas, nrog high precision, tsis tshua muaj suab nrov thiab me me drift, thiaj li ua kom ruaj khov thiab txhim khu kev qha khoom zoo.
2). Los ntawm kev tshem tawm cov attenuation input ntawm qhov sib npaug capacitance ntawm input cable, lub cable tuaj yeem txuas ntxiv yam tsis cuam tshuam qhov ntsuas qhov tseeb.
3) tso zis 10VP 50mA.
4). Txhawb 4,6,8,12 channel (yeem), DB15 txuas cov zis, ua haujlwm voltage: DC12V.
Txoj cai ua haujlwm
CET-DQ601B tus nqi amplifier yog tsim los ntawm kev them nqi hloov pauv theem, hloov pauv theem, qis dhau lim, siab dhau lim, zaum kawg lub zog amplifier overload theem thiab lub zog mov. Th:
1) .Chaw hloov pauv theem: nrog kev ua haujlwm amplifier A1 ua cov tub ntxhais.
CET-DQ601B tus nqi amplifier tuaj yeem txuas nrog piezoelectric acceleration sensor, piezoelectric force sensor thiab piezoelectric siab sensor. Cov yam ntxwv zoo ib yam ntawm lawv yog tias cov khoom siv hluav taws xob tau hloov mus rau qhov tsis muaj zog Q uas yog proportional rau nws, thiab cov zis impedance RA yog siab heev. Lub sij hawm hloov pauv cov nqi yog hloov cov nqi mus rau hauv qhov hluav taws xob (1pc / 1mV) uas yog proportional rau tus nqi thiab hloov cov zis siab impedance rau hauv cov zis impedance tsawg.
Ca --- Lub peev xwm ntawm lub sensor feem ntau yog ntau txhiab PF, 1 / 2 π Raca txiav txim siab qis qis qis qis ntawm sensor.
Cc-- Sensor tso zis tsis tshua muaj suab nrov cable capacitance.
Ci--Input capacitance ntawm kev ua haujlwm amplifier A1, tus nqi raug 3pf.
Tus nqi hloov pauv theem A1 txais yuav American wide-band Precision Operational Amplifier nrog siab input impedance, tsis tshua muaj suab nrov thiab qis drift. Lub tswv yim capacitor CF1 muaj plaub theem ntawm 101pf, 102pf, 103pf thiab 104pf. Raws li Miller txoj kev xav, qhov ua tau zoo ntawm kev hloov pauv los ntawm kev tawm tswv yim capacitance rau cov tswv yim yog: C = 1 + kcf1. Qhov twg k yog qhov qhib-loop nce ntawm A1, thiab tus nqi raug yog 120dB. CF1 yog 100pF (tsawg kawg) thiab C yog li 108pf. Piv txwv tias cov tswv yim tsis tshua muaj suab nrov cable ntev ntawm lub sensor yog 1000m, CC yog 95000pf; Piv txwv tias lub sensor CA yog 5000pf, tag nrho cov capacitance ntawm caccic nyob rau hauv parallel yog hais txog 105pf. Piv nrog C, tag nrho cov capacitance yog 105pf / 108pf = 1 / 1000. Hauv lwm lo lus, lub sensor nrog 5000pf capacitance thiab 1000m tso zis cable sib npaug rau kev tawm tswv yim capacitance tsuas yog cuam tshuam qhov raug ntawm CF1 0.1%. Cov zis hluav taws xob ntawm cov nqi hloov pauv theem yog cov nqi tso tawm ntawm lub sensor Q / tawm tswv yim capacitor CF1, yog li qhov tseeb ntawm cov zis voltage tsuas yog cuam tshuam los ntawm 0.1%.
Cov zis hluav taws xob ntawm cov nqi hloov pauv theem yog Q / CF1, yog li thaum lub tswv yim capacitors yog 101pf, 102pf, 103pf thiab 104pf, cov zis voltage yog 10mV / PC, 1mV / PC, 0.1mv / pc thiab 0.01mv / pc feem.
2). Adaptive theem
Nws muaj kev ua haujlwm amplifier A2 thiab sensor rhiab heev kho potentiometer W. Qhov kev ua haujlwm ntawm theem no yog tias thaum siv piezoelectric sensors nrog qhov sib txawv rhiab heev, tag nrho cov twj paj nruag muaj qhov tso tawm voltage.
3) low pass filter
Qhov thib ob-order Butterworth nquag lim dej nrog A3 raws li cov tub ntxhais muaj qhov zoo ntawm cov khoom siv tsawg, kev hloov kho yooj yim thiab tiaj tus passband, uas tuaj yeem tshem tawm cov kev cuam tshuam ntawm kev cuam tshuam ntau zaus ntawm cov teeb liab muaj txiaj ntsig.
4) .High pass lim
Thawj qhov kev txiav txim siab passive siab dhau lim tsim los ntawm c4r4 tuaj yeem cuam tshuam cov kev cuam tshuam tsawg zaus ntawm cov cim tseem ceeb.
5) .Thaum kawg fais fab amplifier
Nrog A4 ua qhov tseem ceeb ntawm qhov nce II, tso zis luv luv tiv thaiv, siab precision.
6). Tshaj dhau theem
Nrog A5 raws li cov tub ntxhais, thaum cov zis voltage ntau dua 10vp, lub LED liab ntawm lub vaj huam sib luag pem hauv ntej yuav flash. Lub sijhawm no, lub teeb liab yuav raug txiav thiab distorted, yog li qhov nce yuav tsum raug txo los yog qhov txhaum yuav tsum raug pom.
Technical parameters
1) Input yam ntxwv: siab tshaj tawm tswv yim ± 106Pc
2) rhiab heev: 0.1-1000mv / PC (- 40 '+ 60dB ntawm LNF)
3) Sensor rhiab heev hloov: peb tus lej turntable kho sensor nqi rhiab heev 1-109.9pc/unit (1)
4) Qhov tseeb:
LMV / unit, lomv / unit, lomy / unit, 1000mV / unit, thaum qhov sib npaug capacitance ntawm input cable tsawg dua lonf, 68nf, 22nf, 6.8nf, 2.2nf raws li, lkhz reference condition (2) tsawg dua ± The ntsuas kev ua haujlwm (3) tsawg dua 1% ± 2％.
5) Lim thiab zaus teb
a) High pass lim;
Qhov kev txwv qis dua yog 0.3, 1, 3, 10, 30 thiab loohz, thiab qhov sib txawv ntawm qhov tso cai yog 0.3hz, - 3dB_ 1.5dB; l. 3, 10, 30, 100Hz, 3dB ± LDB, attenuation nqes hav: - 6dB / cot.
b) low pass filter;
Upper txwv zaus: 1, 3, lo, 30, 100kHz, BW 6, tso cai sib txawv: 1, 3, lo, 30, 100khz-3db ± LDB, attenuation nqes hav: 12dB / Oct.
6) tso zis yam ntxwv
a) Cov zis siab tshaj plaws: ± 10Vp
b) Cov zis siab tshaj plaws tam sim no: ± 100mA
c) Yam tsawg kawg load tsis kam: 100Q
d) Harmonic distortion: tsawg dua 1% thaum qhov zaus qis dua 30kHz thiab lub peev xwm thauj khoom tsawg dua 47nF.
7) Suab nrov:<5 UV (qhov nce siab tshaj yog sib npaug rau cov khoom siv)
8) Overload qhia: qhov tso zis siab tshaj tus nqi tshaj kuv ± ( Ntawm 10 + O.5 FVP, LED yog nyob rau li 2 vib nas this.
9) Preheating lub sij hawm: li 30 feeb
10) Fais fab mov: AC220V ± 1O％
txoj kev siv
1. input impedance ntawm charge amplifier yog siab heev. Txhawm rau tiv thaiv tib neeg lub cev lossis sab nraud induction voltage los ntawm kev rhuav tshem lub input amplifier, lub hwj huam mov yuav tsum raug muab tua thaum txuas lub sensor rau lub charge amplifier input los yog tshem tawm lub sensor los yog xav tias lub connector yog xoob.
2. Txawm hais tias ntev cable tuaj yeem nqa tau, qhov txuas ntxiv ntawm cable yuav qhia lub suab nrov: lub suab nrov ntawm lub cev, cov neeg kho tshuab suab thiab induced AC suab ntawm cable. Yog li ntawd, thaum ntsuas ntawm qhov chaw, lub cable yuav tsum tsis tshua muaj suab nrov thiab luv kom ntau li ntau tau, thiab nws yuav tsum tau kho thiab nyob deb ntawm cov khoom siv hluav taws xob loj ntawm cov kab hluav taws xob.
3. qhov vuam thiab sib dhos ntawm cov khoom sib txuas siv rau ntawm cov sensors, cables thiab them amplifiers yog cov kws tshaj lij. Yog tias tsim nyog, cov kws tshaj lij tshwj xeeb yuav tsum ua cov vuam thiab sib dhos; Rosin anhydrous ethanol kua flux (vuam roj yog txwv tsis pub) yuav tsum tau siv rau vuam. Tom qab vuam, lub pob paj rwb kho mob yuav tsum tau coated nrog cov dej cawv uas tsis muaj dej (tshwj xeeb cawv yog txwv tsis pub siv tshuaj kho mob) los so cov flux thiab graphite, thiab tom qab ntawd qhuav. Lub connector yuav tsum tau ceev kom huv si thiab qhuav ntau zaus, thiab cov ntaub thaiv npog yuav tsum tau screwed thaum tsis siv
4. txhawm rau xyuas qhov tseeb ntawm qhov ntsuas, preheating yuav tsum tau ua rau 15 feeb ua ntej ntsuas. Yog hais tias cov av noo tshaj 80% lub sij hawm preheating yuav tsum ntau tshaj 30 feeb.
5. Dynamic teb ntawm cov zis theem: nws yog mas pom nyob rau hauv lub peev xwm tsav capacitive load, uas yog kwv yees los ntawm cov nram qab no mis: C = I / 2 л Nyob rau hauv lub vfmax formula, C yog lub load capacitance (f); Kuv tso zis theem tso zis tam sim no muaj peev xwm (0.05A); V peak tso zis voltage (10vp); Qhov siab tshaj plaws ua haujlwm zaus ntawm Fmax yog 100kHz. Yog li qhov siab tshaj plaws load capacitance yog 800 PF.
6) Kev kho cov pob qhov rooj
(1) Sensor rhiab heev
(2) Tau Txais:
(3) Gain II (tau)
(4) - 3dB tsawg zaus txwv
(5) High zaus sab sauv txwv
(6) Ntau dhau
Thaum cov zis hluav taws xob ntau dua 10vp, lub teeb ci dhau los ua rau tus neeg siv tias lub waveform distorted. Qhov nce yuav tsum tau txo los yog. qhov txhaum yuav tsum muab tshem tawm
Xaiv thiab installation ntawm sensors
Raws li kev xaiv thiab kev teeb tsa ntawm lub sensor muaj qhov cuam tshuam zoo rau kev ntsuas qhov tseeb ntawm tus nqi amplifier, cov hauv qab no yog cov lus qhia luv luv: 1. Kev xaiv ntawm lub sensor:
(1) Qhov ntim thiab qhov hnyav: raws li qhov hnyav ntxiv ntawm cov khoom ntsuas, lub sensor yuav inevitably cuam tshuam rau nws cov lus tsa suab, yog li qhov loj ma ntawm lub sensor yuav tsum nyob deb tsawg dua qhov loj m ntawm cov khoom ntsuas. Rau qee qhov kev sim tshuaj, txawm hais tias qhov loj yog qhov loj tag nrho, qhov loj ntawm lub sensor tuaj yeem muab piv nrog lub hauv paus loj ntawm cov qauv hauv qee qhov ntawm qhov kev teeb tsa sensor, xws li qee qhov nyias-walled qauv, uas yuav cuam tshuam rau hauv zos. motion xeev ntawm cov qauv. Hauv qhov no, qhov ntim thiab qhov hnyav ntawm lub sensor yuav tsum muaj tsawg li tsawg tau.
(2) Kev teeb tsa resonance zaus: yog tias ntsuas lub teeb liab zaus yog f, lub installation resonance zaus yuav tsum muaj ntau dua 5F, thaum cov lus teb zaus muab rau hauv phau ntawv sensor yog 10%, uas yog li ntawm 1/3 ntawm kev teeb tsa resonance zaus.
(3) Charge rhiab heev: qhov loj dua qhov zoo, uas tuaj yeem txo qhov nce ntawm lub suab nrov nrov, txhim kho lub teeb liab-rau-suab nrov piv thiab txo qhov drift.
2), Kev teeb tsa ntawm cov sensors
(1) Qhov chaw sib cuag ntawm lub sensor thiab qhov ntsuas yuav tsum huv thiab du, thiab qhov tsis sib xws yuav tsum tsawg dua 0.01mm. Lub axis ntawm lub qhov ntsia hlau mounting yuav tsum ua raws li qhov ntsuas kev taw qhia. Yog hais tias qhov mounting nto yog ntxhib los yog qhov ntsuas zaus tshaj 4kHz, qee cov roj silicone huv tuaj yeem siv rau ntawm qhov chaw sib cuag los txhim kho qhov sib txuas ntau zaus. Thaum ntsuas qhov cuam tshuam, vim tias qhov cuam tshuam mem tes muaj lub zog hloov pauv tau zoo, kev sib txuas ntawm lub sensor thiab cov qauv yuav tsum muaj kev ntseeg siab heev. Nws yog qhov zoo tshaj plaws los siv steel bolts, thiab lub installation torque yog hais txog 20kg. Cm. Qhov ntev ntawm lub ntsia liaj qhov rooj yuav tsum tsim nyog: yog tias nws luv dhau, lub zog tsis txaus, thiab yog tias nws ntev dhau lawm, qhov sib txawv ntawm lub ntsuas hluav taws xob thiab cov qauv yuav raug tso tseg, qhov nruj yuav raug txo, thiab cov zaus resonance. yuav raug txo. Lub ntsia liaj qhov rooj yuav tsum tsis txhob screwed rau hauv lub sensor ntau dhau, txwv tsis pub lub hauv paus dav hlau yuav khoov thiab rhiab heev yuav raug cuam tshuam.
(2) Rwb thaiv tsev gasket lossis kev hloov pauv thaiv yuav tsum tau siv nruab nrab ntawm lub sensor thiab qhov ntsuas qhov ntsuas. Lub resonance zaus ntawm lub gasket thiab conversion thaiv yog ntau dua li qhov vibration zaus ntawm cov qauv, txwv tsis pub ib tug tshiab resonance zaus yuav muab ntxiv rau cov qauv.
(3) Lub rhiab axis ntawm lub sensor yuav tsum ua raws li kev txav mus los ntawm qhov kev sim, txwv tsis pub axial rhiab heev yuav txo qis thiab qhov hloov pauv hloov pauv yuav nce.
(4) Lub jitter ntawm lub cable yuav ua rau tsis zoo kev sib cuag thiab kev sib txhuam suab nrov, yog li cov kev taw qhia ntawm lub sensor yuav tsum tau raws li qhov tsawg kawg nkaus kev taw qhia ntawm cov khoom.
(5) Steel bolt kev twb kev txuas: zoo zaus teb, lub siab tshaj plaws installation resonance zaus, yuav hloov loj acceleration.
(6) Insulated bolt kev twb kev txuas: lub sensor yog rwb thaiv tsev los ntawm cov khoom siv ntsuas, uas tuaj yeem tiv thaiv kev cuam tshuam ntawm cov hluav taws xob hauv av ntawm qhov ntsuas.
(7) Kev sib txuas ntawm magnetic mounting puag: sib nqus mounting puag tuaj yeem muab faib ua ob hom: rwb thaiv tsev rau hauv av thiab tsis yog rwb thaiv tsev rau hauv av, tab sis nws tsis tsim nyog thaum lub acceleration tshaj 200g thiab kub tshaj 180.
(8) Thin wax txheej bonding: txoj kev no yog yooj yim, zoo zaus teb, tab sis tsis kub resistant.
(9) Bonding bolt kev twb kev txuas: lub ntsia liaj qhov rooj yog thawj zaug ua ke rau cov qauv yuav tsum tau kuaj, thiab ces lub sensor yog screwed rau. Qhov kom zoo dua yog tsis ua kom puas tus qauv.
(10) Common binders: epoxy resin, roj hmab dej, 502 kua nplaum, thiab lwm yam.
Cov cuab yeej siv thiab cov ntaub ntawv txuas nrog
1). Ib txoj kab hluav taws xob AC
2). Ib tus neeg siv phau ntawv
3). 1 daim ntawv pov thawj cov ntaub ntawv
4). Ib daim qauv ntawm cov ntawv ntim khoom
7, Kev pab txhawb nqa
Thov hu rau peb yog tias muaj qhov tsis ua haujlwm thaum lub sijhawm teeb tsa, kev ua haujlwm lossis lub sijhawm lav uas tsis tuaj yeem tswj hwm los ntawm tus kws tshaj lij fais fab.
Nco tseg: Tus lej qub CET-7701B yuav raug tso tseg kom siv txog thaum kawg ntawm 2021 (Lub Kaum Ob Hlis 31th.2021), txij Lub Ib Hlis 1st 2022, peb yuav hloov mus rau ntu tshiab CET-DQ601B.
Enviko tau tshwj xeeb hauv Weigh-in-Motion Systems rau ntau tshaj 10 xyoo. Peb WIM sensors thiab lwm yam khoom lag luam tau lees paub dav hauv ITS kev lag luam.
