ZONESCAN net Version 1.4.0 REV 1.
ZONESCAN net Version 1.
Table of Contents 1 2 Introduction..................................................................................................................................... 5 1.1 Purpose and field of use of the software ................................................................................. 5 1.2 Software functionality .............................................................................................................. 5 1.3 Function description .........................................
5 Appendices ................................................................................................................................... 55 5.1.1 Correction Explained in detail ......................................................................................... 55 ZONESCAN net Version 1.
1 Introduction Gutermann has developed the ZONESCAN net system for professional leak detection in water networks. This unmanned, acoustic leak monitoring system with noise-level measurement and correlation guarantees that leak detection specialists are deployed only at the actual leak locations. 1.
the form of histograms and frequency distributions, facilitating the identification of the leak locations. A numerical leak indicator simplifies the interpretation of the statistical evaluation. Figure 1 Functionality of logger, repeater and Alpha Interactive communication between ZONESCAN net and the leak detector While conventional radio loggers are equipped with a simple radio transmitter, the ZONESCAN net loggers feature a transceiver (combined transmitter and receiver).
Figure 2 Structure 7 / 56 1 Map area The Map area contains a Google Maps map with the area of the selected project. Use the buttons located above the map to execute various functions which vary depending on "2 View" (Leak Detection or Maintenance). For an explanation of the individual functions, hold the cursor over the button. The buttons in the upper part of the map can be used to display and hide individual elements of the map.
an entire month. The current setting is displayed at the right. ZONESCAN net Version 1.4 5 Selected Item Use the arrow buttons to change between the individual values in the list area. The current selection is displayed in the upper area. 6 List area In List area, the user finds all data relevant for the evaluation. 7 Logout button The user logs out with the logout button.
1.3.2 Google Map Area The Google Map Area has the normal features that Google Maps offers such as changing the map view to terrain and satellite. Figure: 2.1 Google Map Figure: 2.2 Google Satellite Figure: 2.3 Google Terrain 9 / 56 ZONESCAN net Version 1.
Figure 2.4 Zoom to fit All items In the top left corner of the above window is 3 symbols, moving from left to right the first symbol is the Zoom to Fit all items which adjusts the map by automatically zooming in or out to fir all items in the Window. The second shows or hides the Map Legends at the bottom of the screen. The third, Show Marker Label which displays the logger numbers or not next to the coloured dots representing the loggers. Figure 2.
Figure 2.6 Zoom Out This is the opposite function to the previous Screen and allows the user to Zoom Out of the Map. 1.3.3 Logger and Correlation Layer The user may choose their logger and correlation display preferences by ticking the relevant box within the drop down menu as shown in the following screen shots. Figure: 2.7 Correlation Drop Down Menu In the window above the Probable, Possible, w/o Pipe and out of bracket correlations maybe ticked to show or unticked to hide the correlation icons.
Figure: 2.8 Logger Noise Drop Down Menu Figure 2.8 shows the Logger Noise options Probable, Possible and No leak, tick to display all the loggers on the map or untick to hide any of the options. Figure: 2.9 Logger Custom Down Menu Figure 2.9 allows the user the to select the Pipe Net Work created using the correlation wizard or KML layer provided by the Water Authority. ZONESCAN net Version 1.
2 Leak detection Figure: 3 Leak detection Note! The following description assumes a fully activated map menu! The sorting of the tables can be changed at any time. Click the small arrow in the title field of the value that you would like to change. In the selection box that opens, you can sort in either alphabetical or reverse alphabetical order. The fields can also be displayed or hidden from view. To do this, click the small arrow in the title field.
2.1.1 Table fields Quality A statement on the quality of the correlation graph is made. The assessment ranges from 0 – 100%. The settings for the display of a possible or probable leak are made under Administration in Settings. Maximum Maximum describes the maximum of the correlation curve and provides additional information on the Quality field. The assessment ranges from between 0 and 100, where 0=no signal matching and 100=full signal matching.
Entering pipe data manually: Figure 6 Entering pipe settings Click the Add Segment button to enter a new pipe segment. Then complete the Length, Material and Diameter fields. The sound velocity is automatically calculated from your values and entered in the respective field. If you have more exact information on the sound velocity in this pipe segment, you may enter it manually in this field. To set a filter according to your settings under Maintenance > 4.
Figure 7 Adjusting loggers In the next step, you have the option of changing the course of the pipeline. To do this, click the small box in the middle of the pipe that you would like to move. With the mouse pressed down, drag the pipe to the desired position. You can now repeat this with the individual segments until the pipeline is correctly positioned. Use Undo to undo your last change. Displayed in the Pipeline Properties box are the current number of segments and the current pipe length.
Next, you are prompted to edit the properties of the individual segments of the pipeline. Complete the Length, Material and Diameter fields. Note! If the data – Length, Material and Diameter – are contained in a displayed KML layer, it can be displayed in the map by clicking the corresponding pipeline. The values can be taken over 1:1 from the pop-up window that opens. The sound velocity is automatically calculated from your values and entered in the respective field.
Figure 10 Graph selection for correlated leaks Correlation graph Figure 11 Correlation Graph Correlation is a mathematical method for comparing two time series signals with one another. A leakage noise is simultaneously recorded by two sensors at different locations. The sound emitted by the leak spreads in the water pipe at a defined sound velocity. If the acoustic event were to be brief and occur only once, e.g., a blow with hammer, it would be simple to measure the arrival at both receivers.
In the context of leakage noises, the goal of the correlation measurement is primarily to determine the propagation time difference of two signals. Because the correlation curve also includes spectral information, it is often of interest to define the character of the leakage noise, particularly for distinguishing noises that are not related to the leak, provided this can be detected by means of a frequency analysis (e.g., electrical noise).
street and street number, can be entered. Leak Score The Leak Score is specified in a range from 0 to 100. The higher the number, the greater the probability that measurements will actually detect a leak. The goal of the noise measurement with loggers is to obtain as reliable a statement as possible regarding the presence of a leak at a specific point of the monitored water network.
Figure 13 Graph selection for leak score Histogram The histogram is the graphical display of a frequency distribution of the measured sound level. Figure 14 Logger Histogram During noise monitoring, the noise level is repeatedly measured in intervals of a few seconds. During a two-hour measurement period (e.g., from 2 a.m. to 4 a.m.), more than 1000 individual measurement values may be collected in some cases. The sound level is measured in dB.
For leakage noise monitoring, the quietest noise detected in the observed period is of particular interest. It is the smallest dB value for which a measurement value exists. Because a leakage noise is always present, one assumes that this value most likely characterizes the leakage noise, while higher dB sound intensity values arise from the addition of primarily random noise sources (e.g., vehicle traffic).
Figure 16 Spectrum with leakage noise Leak Score History The leak Score History visualizes the historical values from the last 30 days, 3 months, 6 months or 1 year as long as the data is available for the time span. If the data available is less than a chosen period then the software will adjust the window to fit. Figure 17Logger Leak Score History 23 / 56 ZONESCAN net Version 1.
dBmin History The dBmin History visualizes the historical values from the last 30 days, 3 months, 6 months or 1 year if the data is available. Figure 18 Logger dBmin History Leak Detection Report The Create a Leak Detection Report allows one to choose the options in the window below before creating a report. Click open and a separate window will open which then can be sent to print. .Figure 19 Create a Leak Detection Report ZONESCAN net Version 1.
Measurement Report The Create a Measurement Report allows one to choose the options in the window below before creating a report. Click open and a separate window will open with the requested data ready to send to Print. Figure 20 Create a Measurement Report Export to CSV The Export to CSV will download the loggers Leak Score into CSV file format and automatically open Excel with the data. Figure 21 Create a Measurement Report 25 / 56 ZONESCAN net Version 1.
Manual Correlation The Manual Correlation opens a separate window and allows the user to pick any 2 loggers in the project to correlate between. Figure 22 Manual Correlation Window Use the following section to select your chosen loggers, averaging mode and date. Figure 23 Selecting the Loggers ZONESCAN net Version 1.
Click Correlate and the screen will display the two chosen Zonescan Loggers on a new window with an arrow depicting a correlation was performed. The quality of correlation will be there however the pipe data is missing. Analyse the correlation Graph to make sure the correlation is of good quality. Figure 24 Manual Correlation between 2 loggers Figure 25 Manual Correlation Result 27 / 56 ZONESCAN net Version 1.
3 Print Project Figure 26 Print Project Menu The print section has 4 options which include print Leak Detection Report, Correlation Report, Measurement Report and the Map. The Leak Detection Report includes the Leak Scores, Correlations and Map for the chosen date. A window will appear which gives the user the option to remove correlations, Logger Noise or Map before printing. Figure 27 Print Report Window Options ZONESCAN net Version 1.
A new browser window opens with the report; use the print button on the browser. Figure 28 Print Report Page 29 / 56 ZONESCAN net Version 1.
4 Maintenance Figure 29 Maintenance Note! The following description assumes a fully activated map menu! The sorting of the tables can be changed at any time. Click the small arrow in the title field of the value that you would like to change. In the selection box that opens, you can change the sorting from A-Z or from Z-A. The fields can also be displayed or hidden from view. To do this, click the small arrow in the title field. In the selection menu that appears, move the cursor to the Columns item.
4.1 Alpha tab In the Alpha tab, all Alphas of the current project are displayed. Figure 30Alpha Tab 4.1.1 Table fields Alpha No. Reference number of the displayed Alphas. Last Reached The date on which the Alpha was reached for the last time. Batt. Current battery charge of the individual Alphas. Version Version of the respective Alpha Min Temp. The lowest temperature measured during the last measurement. Max Temp.: The highest temperature measured during the last measurement.
4.1.2 Options You can change the base settings of this tab by right-clicking an entry in the table. Figure 31Alpha settings Reachability History To display the History of when the Alphahad communication with the Zonescan Net Battery History To display the charge state of the selected Alpha, click the Battery Curve item. Min Temp History To display the Minimum Temperature of the selected Alpha, click the Min Temp item.
Add Alpha Click Add Alpha to add a not-yet existing Alpha to the list. In the window that opens, enter the values for Alpha No., Location, Latitude and Longitude. Click the check box to select the logger to which you would like to assign the Alpha. After entering all values, confirm your entries by clicking the Save button. Edit Alpha To make changes to the base settings of existing Alphas, select Edit Alpha. Make the desired changes and then click Save.
Last Reached The date on which the repeater was reached for the last time. Batt. Current battery charge of the individual repeaters. Version: Version of the respective repeater Min Temp. The lowest temperature measured during the last measurement. Max Temp. The highest temperature measured during the last measurement. Comments Comments is a text field with entries on, e.g., permanent noise sources. 4.2.
Picture To Add a Picture of the selected Repeater. Maintenance To Print out a report for the selected Repeater to include all the fields in the Tab Add Repeater Click Add Logger to add a not-yet existing logger to the list. In the window that opens, enter the values for Repeater No., Location, Latitude and Longitude. After entering all values, confirm your entries by clicking the Save button. Edit Repeater To make changes to the base settings of existing repeaters, select Edit Repeater.
4.3.1 Table fields Logger No.: Reference number of the displayed logger. Last Reached The date on which the logger was reached for the last time. Batt.: Current battery charge of the individual loggers. Version: Version of the respective logger Min Temp.: The lowest temperature measured during the last measurement. Max Temp.: The highest temperature measured during the last measurement. Peak dB The largest dB value measured during the last measurement. . Comments: 4.3.
Min Temp History To display the Minimum Temperature of the selected Logger, click the Min Temp item. Max Temp History To display the Maximum Temperature of the selected Logger, click the Max Temp item. Battery History To display the charge state of the selected logger, click the Battery History item. Comments To add a comment about a logger, select the Comments item. Enter the desired comment in the text field that appears. Click Apply to save the entered comment.
AdministrationNote: This section is only releavent for Project Administrators Figure 36 Administration To change the settings of an existing project, click Administration in the View area of the menu bar. In the Project area, select the project that is to be changed. In the navigation bar, then click the Current Project > Settings item. To save your settings, click the Save button in the respective tab. 4.4 Current Project 4.4.1 Settings Note! The preset values are guide values and may vary.
Figure 37 Settings > General Project Name: The name of the project is automatically taken over from the menu bar. Operating Type You can select the appropriate operating type according to operating mode. The Alpha item is preset. If you are working in a fixed network, click Fixed Network here. The data is then integrated in your network.
Problem when not reachable for: Define the number of days after which an error is displayed if an Alpha was not reached. Preset: 4 days Battery Voltage Warning Limits Warning when below: Enter the charge state of the batteries of the Alphas below which a warning is displayed. Preset: 6.00 V Problem when below: Enter the charge state of the batteries of the Alphas below which an error is displayed. Preset: 5.
Figure 39 Settings > Repeater Reachability Warning Limits Warning when not reachable for: Define the number of days after which a warning is displayed if a repeater was not reached. Preset: 3 days Problem when not reachable for: Define the number of days after which an error is displayed if a repeater was not reached. Preset: 6 days Battery Voltage Warning Limits Warning when below: Enter the charge state of the batteries of the repeaters below which a warning is displayed. Preset: 2.
temperature measured at the repeater remains below the limit value entered above. Preset: 3 days Problem when temp. below minimum for: Enter the number of days after which an error is displayed if the temperature measured at the repeater remains below the limit value entered above. Preset: 6 days Warning when temp. above maximum for: Enter the number of days after which a warning is displayed if the temperature measured at the repeater remains above the limit value entered above.
Leak Value Warning Limits Possible leak: Enter the values based on experience for displaying a possible leak. Preset: 40 Probable leak: Enter the values based on experience for displaying a probable leak. Preset: 70 Reachability Warning Limits Warning when not reachable for: Define the number of days after which a warning is displayed if a logger was not reached. Preset: 4 days Problem when not reachable for: Define the number of days after which an error is displayed if a logger was not reached.
temperature measured at the logger remains above the limit value entered above. Preset: 4 days Problem when temp. above maximum for: Enter the number of days after which an error is displayed if the temperature measured at the logger remains above the limit value entered above. Preset: 8 days Peak Decibel Warning Limits Warning when dBmax=0 for: Enter the number of days after which a warning is displayed if the highest dB value measured at the logger is equal to 0.
Presets tab Figure 41 Settings > Presets Leak Score Presets dBEnv: Determine this value together with the manufacturer to obtain the most accurate evaluations of the measurement data. Pipe Presets Pipe Length: Enter the distance between two loggers. Preset: 600m Attention! Incorrect evaluations will result if the entered length is shorter than the actual pipe length. Enter a value here that exceeds the actual spacing between the loggers.
Sound Velocity: The sound velocity is dependent on the pipe material and is automatically set by the system upon selection of the pipe material. Preset: 1334 m/s Filter Presets (Soft Material) Filter on: Select the check box if your pipe is made of soft material. Filter from: Enter the lower Hz value above which filtering is to be performed. Preset: 0 Hz Filter to: Enter the upper Hz value up to which filtering is to be performed.
Max. Distance between 2 Loggers: Enter the maximum distance between two loggers here. A value of 1,000m has proven effective. Preset: 800m Server Configuration Automatically Calculate Correlations: Select the check box if the correlation is to be calculated automatically. The check box is selected by default. Calculate Correlations Daily at: Select the time for the automatic calculation of the correlations from the drop-down list. Preset: 6:00 AM.
Figure 44 Settings > Upload Directory Directory Settings Directory Name: Enter the name of the directory that is to be searched. Server automatically checks directory: Select when the server checks the directory: Never Daily at Select the desired time from the drop-down menu Every X minutes Enter the number of minutes after which the directory is checked. Preset: Daily at 5:00 AM ZONESCAN net Version 1.
E-mail Settings tab Figure 45 Settings > E-mail Settings Server Type: Click to define your server type. Select the SSL check box if necessary. Preset: POP3 Server: Enter your server's name. Example: pop.1and1.com Port: Enter the port enabled for e-mail reception. Preset: Port 110 Account: Enter the e-mail account that is to receive the ZONESCAN net e-mail here. Example: eckental@zonescan.eu Password: Enter the password for the e-mail account entered above.
Server Configuration Only read e-mails whose subject contains: Select the check box and enter ZS-Net in the text field. Delete e-mails after transfer: Select whether and when the transferred e-mails are deleted: Never Always Only e-mails older than X days Enter the number of days after which e-mails are deleted. Preset: Always Server automatically checks e-mail: Select whether and when the server checks for new e-mail.
4.4.2 Leak Calculation Figure 46 Leak Calculation Start Leak Calculation Perform leak calculation manually. Interrupt Leak Calculation Interrupt leak calculation. Delete Leak Scores Delete all leak scores. Refresh Data Check e-mail. 4.4.3 KML Overlays The uploaded KML overlay files are displayed here in a list. Figure 47 List of the KML files Import Click Import to upload the KML files stored on the PC. Delete Click to delete a selected KML file from the list.
4.5 Projects All currently running projects are displayed in a list. Figure 48Project list Add Create a new project. Edit Edit a project selected in the list. Delete Delete a selected project from the list. Import Project An existing project stored on the PC is imported. Merge Project To merge two projects, you need an (exported) project file that is then imported into an already existing project. In the project list, select the project into which the file is to be imported.
4.6 Users All users and their assigned projects are displayed in this tab. Figure 49Users Add Click Add to create a new user. In the window that opens, enter user name, password, user type as well as the first and last name. Click to assign the user individual projects. Once all data has been entered, click Save to activate the profile. Edit Click the Edit button to edit an existing profile. Delete Click Delete to remove an existing profile. 53 / 56 ZONESCAN net Version 1.
4.7 System All system messages from the system are displayed here. Figure 50 System Messages 4.7.1 Messages There are two types of messages. Info This is a simple status message about system activities and background processes. Warning Please contact support if a message is displayed with the warning status. ZONESCAN net Version 1.
5 Appendices 5.1.1 Correction Explained in detail Leakage noise is generally a wild mixture of tones, each of which can be associated with individual frequencies (tone pitches, oscillations). The distribution of this frequency content is referred to as a spectrum. First, the time series signal is recorded. These time series values can undergo a mathematical transformation, Fourier analysis. A particularly efficient computational technique of Fourier analysis is the FFT (Fast Fourier Transform).
The two time series signals are mathematically compared with one another, i.e., correlated with one another. If the leakage sound arrived at the sensors simultaneously, the same signatures are compared and the signals are then similar and the correlation is high. In general, however, the respective signatures arrive at the sensors at different times and simultaneously recorded signals do not correlate with one another.
