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

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