DSHQ-48 High Resolution Seismograph

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DSHQ48HighResolutionSeismographisproducedonthebasisofDSHQ24seismographandcombinedwithChinanationalsituationtoworkunderanewtypeChineseWINXPsystem.Thedesignandmanufacturingintothevaluableexperienceofseismicinstruments,alsoabsorbstoday'sadvancedelectronictechnologiesanddesignconcepts,itisaleadingseismographmulti-function,highaccuracy,highspeed,highreliability,goodman-machineinterfacefeaturesandscalability.

TheInstrumentcanbeusedahammer,electricsparkorexplosionastheexcitationsource,withexplorationdepthfromafewmeterstoathousandmeters;alsodelayfunctioncanbeusedtoobtainDepartmentofstratumdeeperundergroundseismicdata.

ApplicableMethodsare:Reflection,refraction,surfacewaveexploration,piletesting,microtremormeasurement,high-densityseismicimaging,vibrationtesting,measurementandshear-waveseismicexplorationmethods,widelyusedinwaterconservancy,electricpower,railways,bridges,urbanconstruction,transportationandotherareasofengineeringgeologicalexploration,alsoappliestooil,coal,uraniumminingandgroundwaterexplorationandotherfields.

MainApplications

• ReflectionandRefractionExploration:Bedrockembeddeddepth,shapeandregularitiesofdistributionresearch,hydrologicalandengineeringandenvironmentalgeologicalbasicinvestigation.ShearWaveVelocityTest:Measurementofrockmasselasticityparameters,etc.
• SurfaceWaveProspecting:Coverlayerinvestigation;weatheringzoneinvestigation;undergroundcavityanddiseasedgeologicbodysurvey;subgrade,levee,slopediseaseinvestigation.
• High-densityMulti-waveSeismicImaging:Cavityinvestigationofgroundbaseandsubgrade(roadbed),cavesurveying,etc.
• QualityInspectionofCivilEngineering;Bridgepierandbuildingpilefoundationdetecting,etc.
• SafetyEvaluationofCityBlastingVibration:Allkindsofsafetymonitoringofblastingvibration.
• MainFeaturesAdoptthelatesthigh-speed,high-precisionreal24-bitA/Dconverter.Maximumsamplingintervalfor48channelsinsimultaneoussamplingis31.25us,reachinginternationaladvancedlevel.
• Maximumsamplingintervalforsinglechannelisupto10us.Caneasilycompleteseismicdataacquisition,anddataprocessing
• Notonlyusetheadvancedwavefilterwithultra-lowdistortionperformance,betterthan120dB,withexternalsuppression(cut-offfrequencyautomaticallychangeswithsamplingfrequency);meanwhile,variousdigitalwavefilters(high,low,bandpasswavefilters)aresetinthesoftware,withtheircut-offfrequencybeingsetartificially.
• Brand-newoverallstructuredesign,whichallowsmorereasonableviewtofacilitatetheoperation.
• Supportcoveragemeasurement;
• Providedwithoverlayingswitchandoverlayingcablemanufacturedbyourfactory,theapplicationinvariousreflection,refraction,reflexmeasurementforfieldexplorationcanbefacilitated,thusgreatlyimprovingtheefficiencyoffieldwork.
• DSHQ48high-resolutionseismographcansupport12-channeland24-channeloverlayingmeasurementwithoutexternalconfiguration
• Built-inuniqueinstrumentdetectionsystem.Self-checkingacquisition,datacomputing,self-checkingreportcanautomaticallygeneratedtheoutput.
• Fieldmake-and-breaktestforgeoandjuglines,fullwaveformnoisemonitoring
• Supportmultiple(atWindowsinterface)processingsoftware:Superficialreflexprocessing,refraction,surfacewaveshearwavepackage,blasting,pulsating,high-densityseismicimagingprocessingsoftware
• Clock:Annualtimingclock,filerecordingtimewillbestoredinalongwithparameters.

MainTechnicalSpecifications

• ComputerConfiguration:MilitaryGradePC104ControlComputerP4(933MHz);Memory:256MB;HardDisk:nosmallerthan80GB;OperatingSystem:win-XP
• Display:1024x768dotmatrix,highbrightnessTFT(truecolor)LED.
• InputDevice:Equippedwithsuitablefield-usemembranekeyboardandtouchscreen;canalsobeconnectedwithPS/2computerkeyboardandmouse;providedwithhandwritingtablet.
• Interface:DualUSBinterface,PS/2keyboard,mouseinterface,parallelport,Ethernetport,etc.
• RemovableStorage:USBdisk,oradoptingmobileharddiskdrive,USBmobiledrive,etc.
• FrequencyResponseRange:0.1Hz~4kHz
• Noise:smallerthan1μVatfull-frequencystate
• SamplingTimeDelay:0~9999ms
• Conformity:amplitudeconformitybetterthan±0.02%;phaseconformity:betterthan±0.01ms
• SamplingRate:10μs/31.25μs/62.5μs/125μs/250μs/500μs/1ms/2ms/4ms/8ms/16ms/32ms-400msseveraltaps
• NumberofSamplingPoints:512,1024,2048,4096,8192,16384,etc.,maximumrecordupto32768;
• PreamplifierGain:Everysixchannelsasagroup,optionallychosenbysoftware:64times(36dB),16times(24dB),4times(12dB),1times;
• A/DConverter:Adoptthelatest,ultrahighspeedΣ-Δ24bitA/Dconverter;
• AliasFilter:Automatictrackingalongwiththesamplingrate;-3dB,downto120dBattheplacewith0.216timesofsamplingrate;andprovidedwithvariousdigitalwavefilters,cutofffrequency(attheplacewith-3dB)ifrequired
• SupportedDataFormat:SEG-2,SEG-Y,CSP
• TriggerMode:Internalandexternaltriggeredbyhammerswitch;triggeredviablasting,andelectricspark;alsotriggeredbywire-breakingorconnecting
• PowerSupply:12V±20%battery-powered;smallerthan4amps(48channels,5ampswhenLCDworkinginextra-brightness).
• ServiceEnvironment:-10℃~+55℃;Humidity90%RH
• Volume:390×270×190mm
• Weight:18kg

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