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G-Link

®

-200 

User Manual

 

39 

 

 

 

MathEngine

® 

- is used to analyze sensor data. Functions include the ability to filter out frequencies, 

smooth out noisy data, perform math operations such as Fast Fourier Transforms (FFTs), and more. 
MathEngine

® 

interfaces with the SensorCloud graphing view for faster processing. Users can write 

their own algorithms for custom applications. Refer to the MathEngine

® 

website for more information. 

 

http://sensorcloud.com/mathengine

 

 

 

 

Figure 28 - MathEngine

® 

View 

 

 

 

 

Figure 29 - FFT Graph in SensorCloud 

 

For more information about SensorCloud features and navigation, refer to the SensorCloud website or 
contact LORD Sensing Technical Support.  

http://www.sensorcloud.com/

 

Содержание G-Link-200

Страница 1: ...G Link 200 Wireless Accelerometer Node LORD USER MANUAL...

Страница 2: ......

Страница 3: ...eless Sensor Configuration 19 4 1 Hardware Configuration 19 Figure 11 Node Configuration Menu 19 a Calibration Configuration 20 Figure 12 Wireless Sensor Calibration Menu 20 b Sampling Configuration 2...

Страница 4: ...32 Time Series Widget Menu 41 Figure 33 Exporting Data 42 7 Installation 43 7 1 Mounting Recommendations 43 Figure 34 Mounting the Node 43 i Range Test 46 Figure 36 Range Test Menu 46 Figure 37 Range...

Страница 5: ...eferences 61 http www microstrain com support documentation 61 Technical Support 61 b Product Ordering 62 http www microstrain com wireless 62 Sales Support 62 c Related Documents 62 Table 9 Related D...

Страница 6: ...types of sensors including accelerometers strain gauges pressure transducers load cells torque and vibration sensors magnetometers 4 to 20mA sensors thermocouples RTD sensors soil moisture and humidi...

Страница 7: ...y IPSrms Amplitude Grms and G pk pk and Crest Factor allowing long term monitoring of key performance indicators while maximizing battery life G Link 200 inputs are 20 bit resolution with 0 1 full sca...

Страница 8: ...following components and options For a complete list of available configurations accessories additional system products and ordering information see Parts and Configurations on page 53 Item Descriptio...

Страница 9: ...nchronizing or if there is an error Indicator Behavior Node Status Device status indicator OFF Node is OFF Rapid green flashing on start up Node is booting up 1 slow green pulse per second Node is idl...

Страница 10: ...mode When sampling stops the node is switched into idle mode which is used for configuring node settings and allows toggling between sampling and sleeping modes The node will automatically go into th...

Страница 11: ...le range will cause excessive mechanical wear Over time damage can accumulate and may cause the device to become defective Care should be taken not to subject the sensor to accelerations beyond twice...

Страница 12: ...oud is an optional data collection visualization analysis and remote management tool It is based on cloud computing technology and is accessed directly from a web connection For more information go to...

Страница 13: ...plied to the gateway through the USB connection Verify the gateway status indicator is illuminated showing the gateway is connected and powered on 2 Open the SensorConnectsoftware 3 The gateway should...

Страница 14: ...and node address ranges 3 3 1 Add A Node Via Node Discovery If the base and node are on the same operating frequency the node will populate below the Base Station listing when powering on the G Link 2...

Страница 15: ...ency setting From the Base Station select the Manual Add Node tile enter the Node Address last known Frequency factory default is 15 and select Add Node Figure 6 Add Node By Address If the node was su...

Страница 16: ...ld indicate the node is not in idle mode or it may be on another frequency If Add Node Anyway is selected it will associate that node with the channel entered but it is likely there will be a communic...

Страница 17: ...le with a number appears next to Base Station the node is operating on a separate radio channel Select the Base Station and then select the Nodes on Other Frequencies tile Figure 9 Nodes On Other Freq...

Страница 18: ...G Link 200 User Manual 18 Figure 10 Move Node...

Страница 19: ...8 192 g l Low Pass Filter and Group Delay The accelerometer provides two filter stages for limiting bandwidth and maintaining excellent noise performance The first stage is an analog fixed frequency...

Страница 20: ...75 104 5 27 52 10 31 26 20 38 Table 2 Group Delay l High Pass Filter The accelerometer contains an optional high pass filter which is disabledbydefault Thehigh passfiltercornerfrequencyiseffectedbyth...

Страница 21: ...tting data in floating point format The coefficients are applied automatically by SensorConnect when the node is outputting data in signed 16 bit or signed 24 bit formats For the available data types...

Страница 22: ...ewillsavepowerinthisstatewithoutuserinterventionuntilthebeaconreturns Within two minutes of the beacon returning the node will automatically begin sampling and transmitting dataagain l Diagnostic Info...

Страница 23: ...ternal Temperature Valid range 40 to 125 C sint8 Celsius Low Battery Indicator 0 good 1 low 2 critical sensor will stop sampling uint8 External Power 0 not connected 1 external power con nected uint8...

Страница 24: ...faultOperationMode thenodewillautomaticallyre enterthesamplemodeit performedlastwithallcurrentsettings DisableUserInactivityTimeouttoavoidthenode automatically changingstates l Check RadioInterval Whi...

Страница 25: ...d sampling mode by pressing and holding the start button until the LED light turnsblue l Single node FromDevices selectNode Sampling ApplyandStartNetworktobegin collectingdata from a singlewirelesssen...

Страница 26: ...ontains a UTC timestamp allowing nodes to align their collected data within an accuracy of 50 us Each node will also buffer data and transmit this data in time slots allocated prior to sampling Using...

Страница 27: ...Raw Waveform Channels There are two options for data output from the G Link 200 including raw waveform channels and derived data channels The raw channels provide waveform data directly from the senso...

Страница 28: ...be at least 32 times slower than the sample rate See Derived Channel Variables on page 29 l RMSiscalculatedbyaccumulatingthemeansquaredofeachchunk dividingbythe numberof chunksinthe window and takingt...

Страница 29: ...Variables i Windows When performing a derived calculation on sampled data a window is used to provide a rate to transmit derived calculations and a range of time to derive from The length of a window...

Страница 30: ...a Window NOTE A window must contain at least 32 samples For continuous this means that the derived period must be at least 32 times as long as the sample period Burst is not limited by this restrictio...

Страница 31: ...Continuous l Burst Figure 20 Derived Data Chunks iii Under sampling Under sampling happens when there are not enough samples to accurately calculate a value for a derived channel The user should pick...

Страница 32: ...input signal periods sampled within a window the more accurate the calculation will be d Sampling Operations Options There are four sampling operations options for the G Link 200 including Continuous...

Страница 33: ...smit and orlogthedataifoneoftheconfiguredthresholdconditionshasbeenmet Whenthe conditionismet allactivesensorchannelswilltransmitand orlogbothpre andpost event data Thebenefitsofthisoperationmodeinclu...

Страница 34: ...e 23 Data Type Menu l Float 4 Bytes Thenodeappliescalibrationcoefficientslocallyandreports measurementsas floatingpoint values l Int24 3 Bytes The node sends its20 bit measurements as signed24 bitvalu...

Страница 35: ...00 User Manual 35 f Output Operation There are three options for managing data acquired from the G Link 200 The user can transmit collected data log the data to flash memory or do both Figure 24 Data...

Страница 36: ...upload to the host computer or SensorCloud SensorCloud is based on cloud computing technology and is designed for long term collecting and preservation of data Features include time series and visuali...

Страница 37: ...25 SensorCloud Log in or Register ii Navigating Menus The SensorCloud interface has six main views When logging in as a registered user the Device view is the default Navigate to other views by clicki...

Страница 38: ...o be uploaded to the SensorCloud platform The data must be in the LORD Sensing CSV format Data This view is only available after a device is selected It displays data that is collected from sensor nod...

Страница 39: ...faces with the SensorCloud graphing view for faster processing Users can write their own algorithms for custom applications Refer to the MathEngine website for more information http sensorcloud com ma...

Страница 40: ...This format provides an easy way to organize many sensors and networks and it allows the information to be displayed in the most appropriate layout Figure 30 Viewing Data ii Navigating Graphs Use the...

Страница 41: ...e it in the Channels and Settings left sidebar menu Under Channels the channel s for the widget can be enabled and disabled Figure 31 Widget Settings Menu iv Time Series Widget Menu The Time Series Wi...

Страница 42: ...nual 42 v Exporting Data Files To export data to a csv file select the Export Data button on the Time Series widget Export name the document save to the preferred location on the host computer Figure...

Страница 43: ...e on the base of the G Link 200 For proper coupling of the accelerometer to the substrate being measured use the mounting hole and a screw to fasten the node to a rigid surface This will reduce higher...

Страница 44: ...G Link 200 User Manual 44 Figure 35 Installing The Magnetic Base...

Страница 45: ...ground caninterfereat thereceiver Generally thehigher abovethegroundthebetter l Minimize Radio Frequency Interference RFI from other wireless devices especially those operating in the same frequency r...

Страница 46: ...re menu and is highly dependent on the physical environment surrounding the devices 1 Select the node name Range Test Figure 36 Range Test Menu 2 RSSI is a measure of signal strength between the node...

Страница 47: ...G Link 200 User Manual 47 8 Troubleshooting a Troubleshooting Guide...

Страница 48: ...indicator LED to determine the device s state boot idle sample or sleep If the node is sampling or sleeping it cannot be configured In execute the Set to Idle command to put the node in idle state al...

Страница 49: ...teway Verify connections and power to the node and gateway Verify they are powered on and communicating with the software Enter a configuration menu to verify that the node can be accessed 3 2 samplin...

Страница 50: ...INDICATOR Red LED present on start up if Red LED persists replace with 3 new batteries 4 2 damage to the node If Red LED persists after replacing the batteries there is damage to the node Contact LORD...

Страница 51: ...he most current version Updates are found on the LORD Sensing website See Technical Support on page 61 for contact and website information 1 Download the Firmware Upgrade file from the LORD Sensing we...

Страница 52: ...m by LORD Sensing Warranty Repairs LORD Sensing warrants its products to be free from defective material and workmanship for a period of one 1 year from the original date of purchase LORD Sensing will...

Страница 53: ...rew Washer magnetic 1 pack 6306 1021 Washer magnetic 5 pack 6036 1022 Table 7 Node Accessories b Wireless System Equipment The following system parts are available for use with the G Link 200 For the...

Страница 54: ...k 200 User Manual 54 10 Specifications a Physical Specifications Dimensions 46 6 mm x 43 mm x 44 mm Mounting 28 UNF 2B 4 8 mm 19 in DP Weight With 3 batteries 122 grams Enclosure Environmental Rating...

Страница 55: ...Derived channels Velocity IPSrms Amplitude Grms and Gpk pk and Crest Factor Sampling rates 1 sample hour to 4096 samples second Sample rate stability 5 ppm Network capacity Up to 128 nodes per RF cha...

Страница 56: ...their rated range while in operation To protect themselves from occasional over range events the accelerometer s control circuitry will temporarily reduce drive power to the sense element if accelerat...

Страница 57: ...ent on the operational parameters such as sample mode and r a t e M o r e active channels and higher sample rates equate to decreased battery life b Replacing Batteries 1 Remove the cap from the G Lin...

Страница 58: ...rning the product for proper recycling and disposal d Disposal and Recycling The G Link 200 contains internal batteries printed circuit boards and electronic components These items are known to contai...

Страница 59: ...approved by LORD Corporation could void the user s authority to operate the equipment Cet appareil est conforme la Partie 15 des R gles de la FCC des tats Unis et aux RSSS exempts de licence d Industr...

Страница 60: ...g broadcast messages from the gateway to multiple nodes including the synchronized sampling beacon all nodes must be on the same channel as the gateway in orderto receivethebroadcast Assigningchannels...

Страница 61: ...ls http www microstrain com support documentation For further assistance our technical support engineers are available to help with technical and applications questions Technical Support sensing_suppo...

Страница 62: ...more accurate information than printed or file copies Document Where to find it Online Wireless Network Calculator http sensorcloud com onlyCalc true SensorCloud Overview http www sensorcloud com Sen...

Страница 63: ...nel measurement settings offsets hardware gain and calibration values Continuous Sampling a mode of operation in which the node is sampled continuously until stopped or sampled continuously for a fixe...

Страница 64: ...sensor network Node The node is the wireless transceiver to which the sensor s is connected providing communication with the gateway The G Link LXRS V Link LXRS and SG Link LXRS are examples of nodes...

Страница 65: ...iggered continuous or periodic The nodes have several sampling modes that employ these types of sampling Sampling Rate the frequency of sampling Slope When describing a mathematically linear relations...

Страница 66: ...rial Bus is a serial data communications protocol WSN Wireless Sensor Network describes a distribution of sensors and data acquisition equipment that autonomously monitors environmental characteristic...

Страница 67: ...ing how it is set up for data acquisition It includes settings such as sampling mode rate number of active channels channel measurement settings offsets hardware gain and calibration values Continuous...

Страница 68: ...eiving antennas in a radio network As stated it means the antennae are in view of each other with no obstructions LXRS Lossless Extended Range Synchronized is the proprietary LORD Sensing data communi...

Страница 69: ...nditions producing apredictable electrical signal Sleep a command transmitted to the node to put it into sleep configuration Sampling the process of taking measurements from a sensor or device Samplin...

Страница 70: ...packets second Transmission window the time allowed for one data transmission at the automatically determined transmission rate USB Universal Serial Bus is a serial data communications protocol WSN W...

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