GDQJ2型固态地震动强度记录仪MBA30型三分向力平衡加速度计.docx
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GDQJ2型固态地震动强度记录仪MBA30型三分向力平衡加速度计.docx
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GDQJ2型固态地震动强度记录仪MBA30型三分向力平衡加速度计
GDQJ-2型固态地震动强度记录仪
MBA-30型三分向力平衡加速度计
简介及英文说明书
MBA-30Three-componentForceBalanceAccelerometer
MBA-30型三分向力平衡加速度计
GDQJ-IIDigitalRecorder
GDQJ-2型固态地震动强度记录仪
GDQJ-2型固态地震动强度记录仪及传感器技术指标
一、记录器性能指标
.数据采集
通道数:
通道
采样率:
50sps、100sps、200sps和400sps,程序可选
通道延迟:
0s
动态范围:
大于100dB
转换精度:
24bit
低通滤波:
内置高陡度数字FIR滤波器。
记录器满量程;2.5v
噪声:
1LSB
传感器接口:
3通道接口。
2.触发方式:
1)带通滤波器(0.1Hz—15Hz)阈值触发
2)STA对LTA(比率或差值)
STA—采样的整数倍
LTA—STA的整数倍,在记录事件期间改变或箝位
比率:
1.5:
1,2:
1,3:
1,4:
1,6:
1,8:
1等
差:
1—32767A/D计数
每一通道分别设定
3)定时触发、键盘触发
4)外触发
5)对所有的触发方式可以加权,投票表决或其他方式
3.存储
记录介质:
非易失的CMOSSRAM,基本16Mb或SD卡8G
记录能力:
每Mb13分钟,200SPS,3通道数据。
事件预存储:
0—40秒,200SPS,3通道。
以1秒为步长。
后事件存储:
1—65000个A/D计数
最小运行时间:
同后事件存储
回放装置:
RS232连接,可以现场或MODEM遥控
使用与IBM/PC兼容的微机通信软件完成
可连续记录
4.时间系统
时钟稳定性:
内部时间系统10
-6
可选GPS同步到UTC精度1ms
同步:
1)键盘键入和输出格式:
yyyy-mm-ddhh:
mm:
sss
2)连续和自动解码到外部IRIG-E
3)可选的内部GPS接收器
4)后备时钟
指示器:
1PPS发光二极管
5.烈度计
报警预置:
当达到或超过预定值时,事件记录完后对数据作必要的
处理,通过MODEM自动拨号向中心发送有关信息和
烈度值,并存储这些信息。
6.电源
浮充电12V,12AH的电池
功耗:
等待状态3w
7.包括的软件
通信软件:
查看和设置参数
查看和设置系统时间以及对时
接收数据和管理存储器
诊断和检查
显示软件:
记录数据的快速查看和求值
放大和缩小
绘图数据的统计摘要
转换软件:
将记录数据转换成标准的ASCII码
8.环境
工作温度:
-10℃—+50℃
相对湿度:
90%(无冷凝)
9.外形尺寸:
35X26X16(cm)
二、三分向力平衡加速度计性能指标
测量范围
±2g(±1g)
灵敏度
±1.25V/g
(±2.5V/g)
动态范围
>135dB
噪声
<1.25μV
阻尼常数
0.7
输出阻抗
<1Ω
输出电流
8mA
自振频率
80Hz(100Hz)
频带
0~80Hz
(0~100Hz)
静态电流(三分向)
<10mA
横向灵敏度
1‰g/g
线性度
<满刻度的1%
使用温度
-25℃—+65℃
相对湿度
0~90%
尺寸
12×12×7.5cm
重量
2Kg
温度对灵敏度影响(-25℃~+50℃)<0.01%/℃
温度对零点影响(-20℃~+50℃)<0.1gal/℃
电源电压波动对零点影响(±12VDC±30%)<满刻度0.01%
电源电压波动对灵敏度影响(±12VDC±30%)<满刻度0.01%
外形尺寸:
18X18X16(cm)
GDQJ-IIDigitalRecorderOperatingManual
InstituteofEngineeringMechanics,ChinaEarthquakeAdministration,Harbin
TableofContents
1.GettingStarted3
1.1Overview3
1.2Introduction3
2.Configuring&OperatingInstruments5
2.1WorkingMode5
2.2Usingprocedure5
2.2.1Password5
2.2.2Communicationwithrecorder5
2.2.3Monitoringtherecorder6
2.2.4Real-timereceipt6
2.2.5Quitreal-timereceipt7
2.2.6Settingparameters7
2.2.7Triggerthreshold7
2.2.8Uploadthetriggerfile7
2.2.9Viewwaveform8
3.RoutineMaintenance9
3.1Adjustthezerooffsetofaccelerometer9
3.2ReplacementBattery9
3.3CalibrationRecorderTime9
3.4FunctionTest10
3.5StatusCheck11
Appendix12
MBA-30Three-componentForceBalanceAccelerometer12
1performanceindex12
2Useandcalibrationoftheaccelerometer13
1.GettingStarted
1.1Overview
ThisUser’sManualcontainsinstructionsandinformationpertainingtoGDQJ-IIdigitalrecorders.
Chapter1describesoverviewofGDQJ-IIdigitalrecorder.Chapter2describestheoveralloperationofrecorders.Chapter3describesthemaintenanceandserviceofrecorders.
1.2Introduction
GDQJ-IIisathreechanneldigitalrecorder.CombinedwithMBA-30triaxialforce-balanceaccelerometer,itcomposedastrongmotionseismographsystem.GPStimesystemandmodemremoteaccesssystemareoptionalcomponents.
GDQJ-IIdigitalrecorderfeaturesathree-channel,24-bitADandDSPboardthatoffersapproximately120dBofdynamicrangeat200sps.
Whenthegroundmotionaccelerationmeetsthetriggerconditions,therecordercanautomaticallyrecordthetimehistoryofevent.Afteroneeventisrecorded,adatafilewillbecreatedintherecorder’smemory,andthentherecordcomesintostandbymodeautomatically.Inadditiontorecordingtheaccelerationtimehistory,thisrecordercanalsoreporttheparametersrelatedtotheearthquakeintensityquickly.Ifthisfunctionisset,therecorderwillautomaticallyanalyzetherecordeddata.Thereferenceintensityandthedatarelatedtointensity,suchaspeakvalue,duration,mainperiod,andresponsespectraatfourfrequencies,canbetransmittedtodatacenterthroughMODEMortelemetry,orbyavisittotherecordersite.Therecordercanalsotransmitacontinuousstreamofdigitaldatainrealtime.
Typically,therecordercontainsthefollowingcomponents:
●Systemelectroniccircuitboard
●Arechargeablebattery(12V,12AH)
●GPStimesystemOEMcircuitboard
ThefrontpanelofthisrecorderisshowninFig.1-1.
Therearepowerswitch,manualtriggerswitch,GPSantennaconnector,RS232andMODEMconnectorandsensorconnectoronthefrontpanel.Thepowersupplyofthisrecorderis12V,12AHbattery.Thebatteryshouldbechargedinalternatingcurrent220v.Aftertheparametersaresetcorrectly,therecordercanworkautomatically.
ThesensorusedwiththerecorderisMBA-30triaxialforcebalanceaccelerometermadebyIEMalso.
Fig.1-1Schematicdiagramofthefrontpanel
2.Configuring&OperatingInstruments
2.1WorkingMode
Thedigitalrecorderhastwoworkingmode:
triggerrecordermodeandreal-timemonitormode.Innormalwork,thedigitalrecordercommonlyusedtotriggerrecordmode.
2.2Usingprocedure
2.2.1Password
First,turningonthepowerswitchandinputtingthepassword:
“IEM9804”.
2.2.2Communicationwithrecorder
Whentruingonpowerswitch,thedigitalrecorderisworkingondataacquisitionstate.Therecordermonitorsthegroundmotioncontinuouslybytriaxialsensor.Whenthegroundmotionaccelerationmeetsthetriggerconditions,therecordercanautomaticallyrecordthetimehistoryofevent.
WhenconnectingtherecorderwithmonitorcomputerviaRS232cable,theGDQJ4monitorprogrammecanberunninginthemonitorcomputer.Selectingthe“recordlist”iconandclickingrightmousebuttonwiththesub-stationandchoosingtheconnectioncommand,thenthe'messagebox'appearssub-stationconnectioninformation.Ifyoucansuccessfullyconnecttothesub-station,instrumentreceivescommands,andrespondsthecommands.
Fig.2-1connectingthedigitalrecorder
2.2.3Monitoringtherecorder
WhenconnectingtherecorderwithPC,youcansendcommandtochangeitstatusintomonitorstatus.Themeaningof'monitor'commandis:
iftherecorderisrecordinganevent,breakrecordingworkandenterthemonitoringstate.Inmonitoringstate,PCcansend'functioncheck','statuscheck','Receivereal-timefile','parametersetting',andmemorymanagementcommands.Recorder’ssettingparameterscanbescentedfromthePCtorecorderwhenclickthe‘Acnowledgesetup’button.Onlyinthemonitoringstate,triggerparameterscanbemodifiedandvalidated.Deletethefileonlytakeintoactionintherecorder’sstatechangedintothedataacquisitionmode.After30minutes,whentherecorderreceivednonewcommand,itautomaticallydisconnectedwithPCandtransferredtothedataacquisitionstate(exceptforinreal-timetransmissionmode).
2.2.4Real-timereceipt
Inmonitoringstate,selecting'Receivereal-timefile'command,therecorderwilltransfertriaxialaccelerationdatatomonitorPCwith100sampleratepersecond.Toviewreal-timetransferringdata,youmovemouseinthesub-stationname,right-clickmousebuttonandselect'showwave',asshownbelowfigure.
Fig.2-2realtimetransferringwaveform
Real-timetransmissionofdatastoredinthecomputer'c:
\data\sub-stationname'directoryaccordingtothecreatedtimetogenerate'*.Rel'files.
2.2.5Quitreal-timereceipt
Selecting'stopreceiving'commandwillexit'real-timereceipt'mode.
2.2.6Settingparameters
Whentherecorderturnsoneverytime,itautomaticallyreadthelastshutdownparametersettings."Parametersetting"commandcandisplayandmodifyparameters.Doubleclicksthemouse,youcanresetandmodifytheparameter.
2.2.7Triggerthreshold
Thetriggerthresholdsunitforeachchannelistheoneten-thousandthoffull-scale.Thefull-scaleofGDQJ-IIis2g,full-scale.Fortheearthquakerecord,theproposeddefaultvalueis40,equivalentto8gal.
2.2.8Uploadthetriggerfile
Intheconnectedsub-station,right-clickandselect'transmitfile',recordercanlisttheeventfilestoredinrecordermemory.Selectafile,itcanbetransferfromtherecordertothePCusing‘Uploadafile’.Inmonitoringstatus,youcandeleteafileorallfiles.Youcanalsorestoreadeletedfile.Ifthetriggerconditionsismeet,thetriggerfileiscreatedinrecorderanduploadedinthe'c:
\data\TriggerFile'directory.
2.2.9Viewwaveform
Click'File'menuandselect'Display'andselectwhichwaveformyouwantview.Thereal-timedatafilewaslocatedin'c:
\data\sub-stationname'directory;thetriggerfilewaslocatedin'c:
\data\TriggerFile'directory;whilethefunctioncheckfilewaslocatedin'c:
\data\function'directory.Fig2-3showsthewaveforminyouPC,andFig2-4isthetoolboxofwaveform.
Fig.2-3triaxialwaveform
Fig.2-4toolboxofwaveform
usedtolocktheprogramme
hidethecontroltoolbar
increaseordecreasethewaveforminXorY-axis
changetheoffsetofthreechannel
displaythepreviousornextpageofthewaveform
captureashortrangewaveformintoafile
displaywaveforminfullscreen
pintthewaveform
addprintnote
showhelpmessage
3.RoutineMaintenance
3.1Adjustthezerooffsetofaccelerometer
Ifthetriaxialforcebalanceaccelerometerchanneloffsetwasgreaterthan25mv,youshouldadjustitfollownextsteps.First,connectingthePCwiththedigitalrecordandrunningthemonitorprogramme,andchangingtherecorder’sstatusintomonitormode,thenclickingthe‘adjustsensoroffset’command,PCwilldisplaythethreechannelzerooffset.
Unscrewtheprotectionscrewfromthesecnsor;usingthededicatedtooltoadjustthezerooffsetwithin25mv.
Fig.3-1threechannelzerooffsetofaccelerometer
3.2ReplacementBattery
Inthecommonworkingenvironment,batterycanbereplacedeverythreeyears.Toohighortoolowenvironmenttemperaturewillshortthereplacementperiod.Thebat
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