Integrating the White Mini-Seis III Seismic Recorder with MultiLogger Suite

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1 5 Gould Road, PO Box 2155 New London, NH USA Voice: (603) Overview Integrating the White Mini-Seis III Seismic Recorder Sensor Application Note #30 Revision 04/19/2018 The White Mini-Seis III seismograph features a 32 bit processor and multiple 16 bit A/D's. It has the ability to address a large amount of memory and can store many hours of continuous waveform data and many weeks or months of continuous histogram data. It has support for two external sensors and two DB9 connectors for data and charging. One acoustic channel and three seismic channels (radial, vertical and transverse) are supported between the two external sensors. The Mini-Seis III can be connected directly to a WiFi adapter for access to the network, and then configured in Multilogger for automatic data collection. This Application Note will not cover the configuration of WiFi adapters for use with the Mini-Seis III seismic recorder, or more advanced features of MultiLogger and the Mini-Seis III. Refer to the Mini-Seis III Operating Manual for detailed information on the recorder and the MultiLogger Software User's Guide for detailed information on MultiLogger and MLSuite. Refer to the Support area of the Canary Systems website for information on WiFi adapter configuration ( System Requirements The integration requires certain hardware equipment and software applications in order to support the necessary configuration tasks and communication of data from the field to the database. The following hardware and software items are required for the integration: White Mini-Seis III seismic recorder Tri-axial geophone (for seismic monitoring) Microphone (for acoustic monitoring) (2) Push-pull cables (one for each sensor) Serial DB9 cable for communication with wireless adapter DB9 cable for charging OR power connection for wireless adapter Wireless adapter configured for communication on the network A server or PC with Microsoft Windows 7 or greater and MLSuite 2017 SP4 or greater Mini-Seis III Configuration Place the Mini-Seis III device following the guidelines set in the ISEE Field Practice Guidelines for Blasting Seismographs (available from the ISEE at Configure the Mini-Seis III as detailed in the Mini- Seis III Operating Manual. Work with your network administrator to select a supported WiFi adapter for network communication. Canary Systems has documentation on the configuration of the B+B SmartWorx AirborneM2M and Lantronix WiBox on the Support area of our website. MLWeb, MultiLogger, MLSuite and Canary Systems are registered trademarks of Canary Systems, Inc. Mini-Seis III is a trademark of White Industrial Seismology, Inc. Microsoft and Windows are registered trademarks of the Microsoft Corporation. AirborneM2M is a trademark of B+B SmartWorx. Lantronix and WiBox are registered trademarks of Lantronix, Inc. 1

2 MultiLogger Configuration TCP/IP connectivity is supported for communication to the Mini-Seis recorder. The steps below are necessary for establishing communications between the recorder and MLSuite and collecting data: 1. Connect the recorder to the MultiLogger network. 2. Configure the recorder parameters. 3. Configure data collection and enable automatic database import. Refer to the MultiLogger Software User's Guide for more information on MultiLogger. Connect the Recorder to the MultiLogger Network In order to add the recorder to the network, a node representing the recorder must be added to the network tree within MultiLogger. From the initial Network Manager form of MultiLogger, press Add and add a Gateway to the network tree, then save changes, or select an existing Gateway. (Figure 1 Adding a Gateway to the MultiLogger network tree) 2

3 Next, add a TCP/IP Socket and name it as necessary. Save the changes. (Figure 2 Adding the TCP/IP socket) Right-click on the TCP/IP socket so that it is selected, press Add and select White Mini-Seis III from the Seismic Recorders group. Press Accept. (Figure 3 Adding a Mini-Seis III to the TCP/IP socket from the Seismic Recorders group) A prompt will display for selecting the Logger Configuration File. Select Assign a new Configuration File and press Accept. (Figure 4 Assigning a new Logger Configuration File to the Mini-Seis III) 3

4 A Mini-Seis III will be added to the tree. Select the device, and it can be renamed by slow double-clicking its node. When selected, open the Settings tab to enter the IP address and TCP port number of the device. An example is shown in Figure 5 below. Save the configuration. (Figure 5 The IP Address field for the Mini-Seis III in the Settings tab of the MultiLogger Network Manager) The recorder parameters can now be configured. 4

5 Configure Recorder Parameters Once the Mini-Seis is configured on the network, the recorder parameters may need to be adjusted for the application. This is done through the MultiLogger Logger form, which is opened by selecting the Logger icon at the top of the MultiLogger Network Manager screen, as shown in Figure 6: (Figure 6 The location of the Logger form icon in the MultiLogger Network Manager screen) The Logger form contains three tabs for inactive Mini-Seis III recorders: Settings, Recorder Configuration and Terminal. The Monitor tab becomes available once the device is activated. (Figure 7 The Recorder Configuration tab of the MultiLogger Logger form) Recorder parameters are accessed through the Recorder Configuration tab, which contains the following parameter groups. Adjust these parameters as required by your application. 5

6 Main Group (Figure 8 The Main group of the Recorder Configuration tab) Operating Mode The operating mode can be selected for the monitoring application: Waveform The standard selection for blast vibration monitoring with trigger thresholds and a fixed record duration. Histogram The standard selection for monitoring continuous or semi-continuous vibration. The measured data includes the peak levels in each sample interval, the frequency at the peaks and optionally the vector sum. Histogram/Waveform Merges both Waveform and Histogram modes so that waveform events can be recorded simultaneously with histogram data based on user specified trigger thresholds. Duration The duration of the recording. Minimum recording duration is one second, maximum recording duration is 120 seconds. There is also a pre-trigger of 1024 samples. The time of the pre-trigger will thus vary with the selected sample rate. At a sample rate of 1024, the pre-trigger is one second. At a sample rate of 4096, the pre-trigger is 0.25 seconds. Data Resolution The data resolution can be changed between 16 bits and 12 bits. Changing the resolution does not affect the native data, which is stored using 16 bits. Using the full 16 bit resolution will reduce data compression, resulting in larger file sizes. However, since the data are compressed when accessed through the USB or serial interface, the 12 bit option will result in smaller file sizes. The seismic resolution at the standard range is in/s ( mm/s) when at 16 bits, and in/s (0.127 mm/s) when at 12 bits. The linear resolution at the standard range is Mb ( Pa) when at 16 bits, and Mb (0.25 Pa) when at 12 bits. Sample Rate The available sample rates, in samples or readings per second, are 1024, 2048 and 4096 over four channels of data. For blast monitoring, the device should be programmed to record the entire blast event in enough detail to accurately reproduce the vibration trace. Histogram Interval The width of the intervals in the histogram, in hours. Histogram Sample Period The sample period for the histogram, in seconds. Power Control Timer Group The monitoring day's start and end times can be adjusted to save battery life with the Power Control Timer group, particularly when using external power. (Figure 9 The Power Control Timer group of the Recorder Configuration tab) Enabled When enabled, the start and end times of the monitoring day can be selected. Otherwise, the recorder will monitor 24 hours a day. Start at Select the time at which the monitoring day begins for the device (in 24-hour notation). Stop at Select the time at which the monitoring day ends for the device (in 24-hour notation). 6

7 Sensors Group The acoustic and seismic sensor parameters can be configured from the Sensors group. (Figure 10 The Sensors group of the Recorder Configuration tab) Acoustic The threshold for acoustic events registered by the acoustic sensor can be set using these fields. These fields populate automatically using the configured recorder's information. SN The serial number of the Mini-Seis III recorder. Gain Refers to the acoustic trigger threshold at which the unit will trigger from an air overpressure. The trigger level should be low enough to trigger the unit from air overpressure and high enough to minimize the occurrence of false events. The level should be slightly above the expected background noise for the area. Seismic The threshold for seismic events registered by the seismic sensor can be set using these fields. These fields populate automatically using the configured recorder's information. SN The serial number of the Mini-Seis III recorder. Gain Refers to the seismic trigger threshold at which the unit will trigger from a ground vibration. This should be low enough to trigger the unit from blast vibrations and high enough to minimize false events. The level should be slightly above the expected background vibrations for the area. A Weight A-weighting is supported, but requires special additional hardware. When available, the A- Weighting installed box should be checked. Once all recorder parameters have been configured, the changes must be saved and the programming must be downloaded to the Mini-Seis III. Close the Logger form. The Network Manager will display. 7

8 Configure Data Collection and Import To configure the system to automatically collect the event files from the Mini-Seis recorder and import them into the MultiLogger database, select the Mini-Seis device in the MultiLogger Network Manager and then select the Settings tab of the Network Manager. Check the Active checkbox. (Figure 11 The Active checkbox on the Settings tab of the Logger form) 8

9 Additional data collection settings are configured from the Data Collection tab. Enter the desired collection interval to indicate how often the system will check for new event files and telemetry data, then select Enable Schedule and Automatic Database Import. Lastly, select Save to save the settings. (Figure 12 Configuring automatic data collection from the Data Collection tab of the MultiLogger Network Manager) Once data collection is activated, confirm the recorder is communicating with the network by selecting the Monitor tab in the Logger form. Confirm dynamic fields such as the connection icon and Last Logger Clock field contain new values. If current values are not present then the Mini-Seis III is not communicating with MultiLogger and troubleshooting is required. 9

10 (Figure 13 Real-time fields that can indicate that the Mini-Seis III is communicating with MultiLogger) Data will now be automatically imported into the database as per the defined interval. See the following section for database considerations. 10

11 Database Considerations The data collected from the Mini-Seis III can be viewed in the database in MLWeb. MLWeb also allows for the plotting of the seismic, acoustic and system health data using specialized charts and reports. The Mini-Seis III data is imported as Data Elements within two separate folders: One folder, left untitled, contains the seismic and acoustic data; the other folder, with the Serial Number of the device as its title, contains the system health data recorded by the device. (Figure 14 Both types of Mini-Seis III recordings in the MLWeb Database Tree after being imported into the database) Seismic and Acoustic Data In MLWeb, high-speed event data captures, such as seismic and acoustic recordings, are stored as Dynamic Events within Data Elements, rather than standard data records. The acoustic recordings are imported as one Data Element: Acoustic. The seismic recordings are imported as three Data Elements, representing each available seismic channel: Radial, Vertical and Transverse. Their titles are preceded by the serial number of the recorder. (Figure 15 The seismic recordings imported as Data Elements, as shown in the MLWeb Database Tree) 11

12 Their data can be viewed from the Dynamic Events tab of their respective Data Element panels. (Figure 16 The Dynamic Events tab of the Acoustic Data Element's panel, showing the stored recordings) The grid contains the following Dynamic Events records types: Triggered The exact date and time when the event was triggered. Frequency The recording frequency in Hz (cycles per second) that were used to capture this event. Pre-Trigger The number of pre-trigger data in seconds included in this event. Post-Trigger The number of post-trigger data in seconds included in this event. Dynamic Records The total number of Data records associated with this event. This number usually equals Frequency x (Pre-Trigger + Post-Trigger) + 1. Valid Whether the Dynamic Event is available for viewing through the client software. Notes Use this field to record any additional information specific to this event. User Name The user who created or last modified the Dynamic Event record. This cannot be edited, but is updated automatically based on the user login. Image This column indicates that an image is associated with the Element at that particular date/timestamp. 12

13 The Configuration Side Panel of the Data Element panel can be used to view and modify additional data, such as units, Element name and coordinates. (Figure 17 The Configuration Side Panel of the Acoustic Data Element) 13

14 Charting Event Data The Event Chart is designed to plot high-speed event data captures, such as those from seismic recorders. It provides for calculating velocity and displacement, making linear base corrections, applying instrument correction, filtering high frequency and/or low frequency content from the time series, calculating the Fourier amplitude spectrum, and calculating response spectra. (Figure 18 A Velocity Time Series V2 Event Chart) The chart is configured through the Configuration Side Panel. It contains a number of tabs from which Elements and their events can be added and selected, chart type can be set and appearance can be configured, to name a few options. Please see Chapter 11 of the MLWeb User's Guide for detailed information on Event Charts and Dynamic Events. 14

15 The chart must contain at least one Data Element with stored Dynamic Events. The Data Element's stored Dynamic Events will display in the Dynamic Events grid in the Configuration Side Panel. To plot an event, it must be selected in the grid. (Figure 19 The Configuration Side Panel of the Event Chart, showing the plotted Data Element's stored events) 15

16 System Health Data System health data is imported as two Data Elements: Battery_Volts and Storage_Used_Percent. (Figure 20 The Mini-Seis III's system health Data Elements, as shown in the MLWeb Database Tree) This data is imported as standard data records within their respective Data Elements. (Figure 21 The Data tab of a Data Element's panel, where non-event data is viewable) Battery voltage and storage use data is recorded at the time of data collection, meaning the selection made for the collection interval in the Data Collection tab of the MultiLogger Network Manager is how often system health data records are generated. (Figure 22 The relationship between the Interval and Offset selections in MultiLogger and the recording interval of system health data) 16