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Related Manuals for Lord MicroStrain G-Link-200-40G
Summary of Contents for Lord MicroStrain G-Link-200-40G
- Page 1 LORD USER MANUAL G-Link -200 ® Wireless Accelerometer Node...
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Page 3: Table Of Contents
® G-Link -200 User Manual Contents Wireless Sensor Network Overview .......................... 6 Node Overview ................................. 7 Components List ..............................8 Interface and Indicators ............................9 Node Operational Modes ..........................10 Figure 2 - Node Operational Modes ......................... 10 2.4 Mechanical Shock Limits ............................11 System Operation .............................. - Page 4 ® G-Link -200 User Manual Figure 21 - Sampling Operations Menu ........................32 Figure 22 - Event Triggered Sampling ........................33 Figure 23 - Data Type Menu ............................ 34 Output Operation ..............................35 Figure 24 - Data Outputs ............................35 Viewing Data ................................
- Page 5 ® G-Link -200 User Manual References ................................61 http://www.microstrain.com/support/documentation ....................61 Technical Support ............................... 61 Product Ordering..............................62 http://www.microstrain.com/wireless ........................62 Sales Support ................................62 Related Documents .............................. 62 Table 9 - Related Documents ........................... 62 Glossary ................................67...
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Page 6: Wireless Sensor Network Overview
® G-Link -200 User Manual 1. Wireless Sensor Network Overview The LORD Sensing Wireless Sensor Network is a high- speed, scalable, sensor data acquisition and sensor networking system. Each system consists of wireless sensor interface nodes, a data collection gateway, and full- featured user software platforms based on the LORD Sensing Lossless Extended Range Synchronized (LXRS) data communications protocol. -
Page 7: Node Overview
® G-Link -200 User Manual 2. Node Overview The G- Link- 200 wireless accelerometer node features an on- board triaxial accelerometer that allows high- resolution data acquisition at noise levels as low as 25 or 80 µg√Hz. The G- Link- 200 can output continuous waveform data, or one of four derived channels, including Velocity (IPS ), Amplitude (G and G... -
Page 8: Components List
® G-Link -200 User Manual 2.1 Components List G- Link- 200 sensor nodes come with the following components and options. For a complete list of see Parts available configurations, accessories, additional system products and ordering information, and Configurations on page 53 Item Description Quantity... -
Page 9: Interface And Indicators
® G-Link -200 User Manual 2.2 Interface and Indicators The G- Link- 200 LEDs indicate operational modes showing when the node is booting up, idle and waiting for a command, sampling, resynchronizing, or if there is an error. Indicator Behavior Node Status Node is OFF Rapid green flashing... -
Page 10: Node Operational Modes
® G-Link -200 User Manual 2.3 Node Operational Modes active sleep idle Sensor nodes have three operational modes: , and . When the node is sampling, it is in active 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. -
Page 11: Mechanical Shock Limits
® G-Link -200 User Manual 2.4 Mechanical Shock Limits The accelerometers used by the G Link 200 are sensitive instruments that can suffer mechanical damage if subjected to large or frequent accelerations beyond 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 acceleration exceeds twice the full-scale range. -
Page 12: Software Installation
® G-Link -200 User Manual 3.1 Software Installation Install the SensorConnect software on the host computer before connecting any hardware. Access the free software download on the LORD Sensing website at: http://www.microstrain.com/software NOTE The SensorConnect software includes hardware drivers required for use with USB gateways. -
Page 13: Gateway Usb Communication
® G-Link -200 User Manual 3.2 Gateway USB Communication Drivers for the USB gateways are included the SensorConnect software installation. With the software installed, the USB gateway will be detected automatically whenever the gateway is plugged 1. Power is applied to the gateway through the USB connection. Verify the gateway status indicator is illuminated, showing the gateway is connected and powered on. -
Page 14: Connect To Nodes
® G-Link -200 User Manual 3.3 Connect to Nodes Several methods can be used in SensorConnect to establish communication with the nodes: the automatic node discovery feature, manually entering the node address, and scanning transmission frequency 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-200. -
Page 15: Add A Node Manually
® G-Link -200 User Manual 3.3.2 Add A Node Manually Adding a node manually requires entering the node address and its current frequency 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. - Page 16 ® G-Link -200 User Manual If the node failed to be added, a failure message will appear. This means the node did not respond to the base station which could indicate the node is not in idle mode or it may be on another frequency.
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Page 17: Move Node To Base Station Frequency
® G-Link -200 User Manual i. Move Node To Base Station Frequency If a red circle 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. - Page 18 ® G-Link -200 User Manual Figure 10 - Move Node...
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Page 19: Wireless Sensor Configuration
® G-Link -200 User Manual 4. Wireless Sensor Configuration 4.1 Hardware Configuration Node settings are stored to non-volatile memory and may be configured using SensorConnect. This chapter describes the user-configurable settings. Figure 11 - Node Configuration Menu Input Range - Set the accelerometer range to fit the application. Available ranges are ±2.048 g, ±4.096 g, and ±8.192 g. - Page 20 ® G-Link -200 User Manual Group Delay is the time delay of the signal amplitude imparted by the low pass filter. Table 2 - below for group delay values corresponding to the low pass filter configuration. Low Pass Filter (Hz) at -3 dB Group Delay (ms) 0.88 1.51...
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Page 21: Calibration Configuration
® G-Link -200 User Manual a. Calibration Configuration Each node is calibrated at the factory and stores its linear calibration coefficients in nonvolatile memory. These coefficients are applied by the node when the node is outputting 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. -
Page 22: Sampling Configuration
® G-Link -200 User Manual b. Sampling Configuration There are three user- set sampling options for the G- Link- 200, including Lost Beacon Timeout, Diagnostic Info Interval, and Storage Limit Mode, in the Wireless Node Configuration > Sampling menu. Figure 13 - Sampling Configuration Menu Lost Beacon Timeout - When the node is running in a synchronized network, it periodically synchronizes its time clock to a beacon broadcasted from the WSDA gateway. - Page 23 ® G-Link -200 User Manual The contents of the diagnostic packet may be viewed in the Data tab within SensorConnect. Description Data Values Data Type Unit 0 = Idle 1 = Deep sleep Current State uint8 2 = Active run 3 = Inactive run Idle uint32...
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Page 24: Power
® G-Link -200 User Manual c. Power There are multiple user-set power options for the G-Link-200, including Default Operation Mode, User Inactivity Timeout, Check Radio Interval, and Transmit Power, in the Wireless Node Configuration > Power menu. Figure 14 - Node Configuration Power Menu Default Operation Mode - When power is applied, the node will enter the Default Operation Mode. -
Page 25: Start Collecting Data
® G-Link -200 User Manual 5. Wireless Sensor Sampling Configuration 5.1 Start Collecting Data There are several ways to collect data from the G-Link-200, including from a single node, a network of nodes, or restarting the last used sampling mode, by pressing and holding the start button until the LED light turns blue. -
Page 26: Network Options
® G-Link -200 User Manual Button Press - Press the G-Link-200 Start button and hold until the blue LED turns on, then release the button. The node will enter the most recently used Sampling mode and configuration settings. a. Network Options There are two network settings available for the G- Link- 200: LXRS and LXRS+. -
Page 27: Raw Waveform Channels
® G-Link -200 User Manual b. 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 sensor. Figure 18 - Raw Data Output... -
Page 28: Ips G-Link-200 Only
® G-Link -200 User Manual c. Derived Output Channels There are four derived data channels available for the G- Link- 200. Using these data channels for vibration analysis allows the ability to extend battery life while reducing data. Each operation is performed on a window of data from the specified accelerometer axis. -
Page 29: Firmware < 10.36231
® G-Link -200 User Manual Firmware < 10.36231 The RMS of the IPS is calculated by accumulating the mean of the squares of the integral of the chunk, dividing by the number of chunks in the window, taking the square root, and multiplying by 386.2197 to convert from Gs to in/sec Name Description... - Page 30 ® G-Link -200 User Manual Figure 19 - Derived Data 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 restriction because the minimum burst size is 100 samples.
- Page 31 ® G-Link -200 User Manual ii. Chunks Windows can encompass thousands of samples, but a node can only operate on a finite number of samples at a time, so the node chunks up data to run derived calculations. Chunk size is defined below where is the derived period, is the burst duration, and...
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Page 32: Incoherence
® G-Link -200 User Manual iv. Incoherence Derived channels are most accurate when the window time is a multiple of the period of the input signal, meaning that the window is coherent with the input signal. When the window is not coherent with the input signal, the window will end up with a fraction of a period of the input signal at the end, which will skew the derived calculation for the window in some cases. - Page 33 ® G-Link -200 User Manual Event Triggered - Collect data continuously at a fixed sample rate. However, only transmit and/or log the data if one of the configured threshold conditions has been met. When the condition is met, all active sensor channels will transmit and/or log both pre- and post-event data.
- Page 34 ® G-Link -200 User Manual e. Data Type There is a 20-bit ADC on the G-Link-200. However, users may select the data type that is reported. Floating point should be selected in most applications and where nodes must send measurements in units of g-force.
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Page 35: Output Operation
® G-Link -200 User Manual 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 Outputs... -
Page 36: Viewing Data
® G-Link -200 User Manual 6. Viewing Data a. SensorCloud Data acquired through SensorConnect is automatically saved on the host computer. Saved data can be uploaded to SensorCloud. Ethernet gateways provide the option to automatically port the data to SensorCloud during data acquisition for near real-time display and aggregation. Ethernet gateways can also be configured to save data locally to internal memory for future upload to the host computer or SensorCloud. -
Page 37: Connect To Sensorcloud
® G-Link -200 User Manual i. Connect to SensorCloud Go to the SensorCloud website and select sign-in to enter the log-in credentials, or register as a new user if needed. http://www.sensorcloud.com/ Figure 25 - SensorCloud Log-in or Register ii. Navigating Menus The SensorCloud interface has six main views. - Page 38 ® G-Link -200 User Manual Device - The device list shows every Ethernet gateway and API device associated with the SensorCloud account, including owned, shared, and demo devices. This view provides links to each device’s SensorCloud subscription plan, configuration options, and a summary of last communications and data transactions.
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Page 39: Http://Sensorcloud.com/Mathengine
® G-Link -200 User Manual ® 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 ®... -
Page 40: Sensorconnect
® G-Link -200 User Manual b. SensorConnect i. Using Dashboards and Widgets Collected data is viewed on the Data page through the creation of dashboards and widgets. Think of dashboards as individual pages and widgets as an illustration on the page. Create multiple data widgets on each dashboard to display sampled data as a time-series graph, text chart, or a simple gauge that only displays the most current reading. -
Page 41: Widgets Options
® G-Link -200 User Manual iii. Widgets Options The widget configuration menu is different for each type of widget but typically includes sensor or channel selections and widget settings such as titles and legends. After adding a widget, left click to select and configure it in the Channels and Settings left sidebar menu. - Page 42 ® G-Link -200 User Manual 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 33 - Exporting Data...
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Page 43: Installation
® G-Link -200 User Manual 7. Installation 7.1 Mounting Recommendations The G-Link-200 is rated for IP67 environmental protection from water and dust and can be used in many indoor and outdoor applications. . There is one ¼ - 28 UNF - 2B mounting hole 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. - Page 44 ® G-Link -200 User Manual Figure 35 - Installing The Magnetic Base...
- Page 45 ® G-Link -200 User Manual a. Optimizing the Radio Link NOTE In the event of communication difficulties, it may be necessary to disable WIFI on the host computer, or use a USB extender when collecting data. The best method for ensuring optimal radio communication is to conduct an RF survey of the installation site.
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Page 46: Range Test
® G-Link -200 User Manual i. Range Test After establishing communication between node and gateway, use the range test feature in SensorConnect to monitor the signal strength and to optimally position the nodes, gateway, and antennae for installation. Maximum achievable range is determined by the gateway and node power settings (found in the device Configure menu) and is highly dependent on the physical environment surrounding the devices. -
Page 47: Troubleshooting
® G-Link -200 User Manual 8. Troubleshooting a. Troubleshooting Guide... - Page 48 ® G-Link -200 User Manual Possible cause and recommended solution 1.1 node or gateway power is off The status indicator LED on the device may be off. Turn the 1. POWER device on, and the status indicator LED should illuminate. gateway or node does 1.2 node battery is dead not turn on...
- Page 49 ® G-Link -200 User Manual Possible cause and recommended solution device's state: boot, idle, active, or sleep. If the node is sampling, it cannot be configured. In , execute the Set to Idle command to put the node in idle state, allowing configuration to occur.
- Page 50 ® G-Link -200 User Manual Possible cause and recommended solution ERROR INDICATOR if Red LED persists, replace with 3 new batteries. Red LED present on start up 4.2 damage to the node If Red LED persists after replacing the batteries, there is damage to the node.
- Page 51 ® G-Link -200 User Manual b. Updating Node Firmware Under the recommendation of LORD Sensing Technical Support Engineers, nodes can be upgraded to the latest available firmware to take advantage of new features or correct operating i s s u e s . S e n s o r C o n n e c t version 5.0.0 or greater can be used to update any mXRS or LXRS node or gateway firmware to the most current version.
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Page 52: Warranty Repairs
® G-Link -200 User Manual c. Repair and Calibration General Instructions In order to return any LORD Sensing product, you must contact LORD Sensing Sales or Technical Support to obtain a Return Merchandise Authorization number (RMA). All returned merchandise must be in the original packaging including manuals, accessories, cables, etc. -
Page 53: Parts And Configurations
® G-Link -200 User Manual 9. Parts and Configurations a. Node Accessories The following parts are available for use with the G-Link-200. For the most current product information, custom, and OEM options not listed below, refer to the LORD Sensing website or contact the LORD See Product Ordering on page 62 Sensing Sales Department LORD Sensing Part... -
Page 54: Specifications
® G-Link -200 User Manual Specifications Physical Specifications Dimensions: 46.6 mm x 43 mm x 44 mm Mounting: ¼ - 28 UNF - 2B 4.8 mm [.19 in] DP. Weight: With 3 batteries: 122 grams Enclosure Environmental Rating: IP67... -
Page 55: Operating Specifications
® G-Link -200 User Manual Operating Specifications Parameter Specifications Accelerometer Channels Measurement range ±2 , ±4 , or ±8 ±10 g, ±20 g, or ±40 g configurable configurable g/√ Hz g/√ Hz Noise density 25 µ 80 µ offset ±25 mg (±2 ±50 mg (±10 ±.1 mg/ °C (typical), ±0.5 mg/ °C (typical),... -
Page 56: C Mechanical Shock Limits
® G-Link -200 User Manual Parameter Specifications Enclosure material 300 series stainless steel with polycarbonate cover Conformal coating Integration Compatible gateways All WSDA base stations and gateways Software SensorCloud, SensorConnect, Windows 7, 8 & 10 compatible Software development kit (SDK) http://www.microstrain.com/software/mscl Regulatory compliance FCC (USA), IC (Canada), CE (European Union), JET (Japan) -
Page 57: Safety Information
® G-Link -200 User Manual Safety Information This section provides a summary of general safety precautions that must be understood and applied during operation and maintenance of components in the LORD Sensing Wireless Sensor Network. Throughout the manual, ANSI Z535 standard safety symbols are used to indicate a process or component that requires cautionary measures. -
Page 58: Battery Hazards
® G-Link -200 User Manual Battery Hazards Lithium batteries contain toxic chemicals that are harmful to humans and the environment. Disposal is subject to federal and local laws. Do not discard the battery or the node in the trash. Follow proper battery disposal protocol, or contact LORD Sensing Technical Support for information on extracting the battery or returning the product for proper recycling and disposal. -
Page 59: Radio Specifications
® G-Link -200 User Manual Radio Specifications The G- Link- 200 employs a 2.4GHz IEEE 802.15.4- compliant radio transceiver for wireless communication. The radio is a direct- sequence spread spectrum radio and can be configured to operate on 14 separate frequencies ranging from 2.405 GHz to 2.470 GHz. Following the 802.15.4 standard, these frequencies are aliased as channels 11 through 26. - Page 60 ® G-Link -200 User Manual for future node queries. Manually matching the node and gateway frequency channels is required in some applications. For example, when sending 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 order to receive the broadcast.
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Page 61: References
® G-Link -200 User Manual 12. References Technical Support There are many resources for product support found on the LORD Sensing website, including technical notes, FAQs, and product manuals. http://www.microstrain.com/support/documentation For further assistance our technical support engineers are available to help with technical and applications questions. -
Page 62: Product Ordering
® G-Link -200 User Manual Product Ordering Products can be ordered directly from the LORD Sensing website by navigating to the product page and using the Buy feature. http://www.microstrain.com/wireless For further assistance, our sales team is available to help with product selection, ordering options, and questions. - Page 63 ® G-Link -200 User Manual These terms are in common use throughout the manual: A/D Value: the digital representation of the analog voltages in an analog-to-digital (A/D) conversion. The accuracy of the conversion is dependent on the resolution of the system electronics; higher resolution produces a more accurate conversion.
- Page 64 ® examples of nodes manufactured by LORD MicroStrain ® Node Tester Board: The node tester board is a device designed by LORD MicroStrain that can be plugged into nodes to test their functionality. Offset: When describing a mathematically-linear relationship, the offset is the value where the line that...
- Page 65 ® G-Link -200 User Manual Ping: a byte transmitted by the gateway to the node. The node responds by echoing the byte, indicating communication exists between the node and gateway. Range Test: a continuous string of pings used to validate communication between the gateway and the node over distance and obstruction Real Time Clock (RTC): a computer clock that keeps track of the current time RFI: Radio Frequency Interference is a disturbance in an electrical circuit due to electromagnetic...
- Page 66 ® G-Link -200 User Manual USB: Universal Serial Bus is a serial data communications protocol WSN: Wireless Sensor Network describes a distribution of sensors and data acquisition equipment that autonomously monitors environmental characteristics, such as temperature, pressure, and strain.
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Page 67: Glossary
® G-Link -200 User Manual Glossary These terms are in common use throughout the manual: A/D Value: the digital representation of the analog voltages in an analog-to-digital (A/D) conversion. The accuracy of the conversion is dependent on the resolution of the system electronics; higher resolution produces a more accurate conversion. - Page 68 ® examples of nodes manufactured by LORD MicroStrain ® Node Tester Board: The node tester board is a device designed by LORD MicroStrain that can be plugged into nodes to test their functionality. Offset: When describing a mathematically-linear relationship, the offset is the value where the line that...
- Page 69 ® G-Link -200 User Manual Periodic Burst Sampling: a mode of operation in which the node is sampled for a fixed window of time (burst) and then repeats that window at set intervals. The burst duration and time between bursts is configurable.
- Page 70 ® G-Link -200 User Manual Transmission rate: the number of data packets per transmission window, measured in seconds. Depending on the sampling mode and settings it will be between 1 and 64 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: Wireless Sensor Network describes a distribution of sensors and data acquisition equipment...