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8/8/2019 GeNet Measurement Systems
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Ge:Net Measurement Systems
- Communication description
o Modem Dial- Up Connection (CSD)
o Secure Internet Connection via Fixed IPo Remote Access using LoggerNet Software
o Remote Access via Satellite (BGAN)
- Examples
o Automatic Email
o Recorded data
o Figures of wind speed and temperature
- Features
o Automatic protocol file
o Security
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1. Ge:Net Measurement Systems
Ge:Net measurement systems consist of different kinds of sensors like anemometer, wind vanes, temperature,
humidity and barometric pressure sensors. In order to measure and store data a data logger is used to process
values and store them in its battery backed memory. The energy supply for the autonomous measurementsystem consists of a solar panel that charges a lead acid battery.
Ge:Net is using Campbell scientific Data loggers. The loggers can
individually be programmed and allow connecting different sensors and
different configurations. Depending on the number of sensors used, data
can be stored typically between 300 to 360 days without collecting them
in between. Even a power down of the external power supply will not
influence the data which are stored in the data loggers memory. The data
loggers are individually programmed with the Ge:Net self developed data
logger software, which is adapted to the requirements of the clients
instrument configuration.
1.2 Collecting Data from Remote
In general it is necessary to connect from a computer to the measurement system to download recorded data
and to see currently measured values. Ge:Net has developed different methods to retrieve data from remote, so
that it is not necessary to drive to the remote site to collect recorded meteorological data. All of our systems
support e.g. email sending of recorded data.
Ge:Net has realized different ways of improved data transfer.
The measurement systems can be set up to send emails every
night (Watch example). The emails can contain current data
and an attached data file with data recordings of the previous
day. One advantage of this solution is that one can verify the
measurement system every day simply by checking the email
box.
The measurement system can be set up to upload data files to
a FTP Server.
Connection via secure VPN (Virtual Private Network): Theconnection can be established via a fixed IP- Address. This
solution is very easy and comfortable because only an internet
connection is required. This kind of communication is
currently only supported by measurement systems supplied by
Ge:Net.
CSD Communication is a common used and easy way to
collect data from remote. The measurement system is called via telephone number by a PC that is
equipped with a modem.
If a site is very remote and if no GSM Network is available BGAN Satellite communication is a simple
way to collect and watch data from remote.
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1.Modem Dial- up Connection (CSD)
Technical description
Connection is established by calling the measurement System via standard analog modem
The Measurement system is equipped with a GSM Modem and waits for incoming calls.
Data collection and real time data view are possible using PC400 Software, provided by G
Features:
- Automatic emails with current meteorological data and daily recorded data.
- Upload recorded data to FTP- Server
Advantages
- Cheap
- Easy
- Low Power requirements
Disadvantages
- Not Possible if GSM Network is not available
- Simcard with CSD- Service (and second data- number) required
- Low communication rate(4.8 kBits/sBaud maximum)
- Problems in some regions, where CSD- Service is not/temporally not supported by ne
In some cases communication may not be possible or is temporally not available
- Connection not possible, if analog- Modem/Landline isnt available or if Voice- over IP
GSM mobile Network
Landline
Ge:Net Measurement System with GSM/GPRS Modem. Modem
equipped with local simcard (enabled CSD and GPRS- service)
Standard Analog Mo
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2.Secure Internet Connection via Fixed IP
Ge:Net Measurement System with GSM/GPRS Modem
and fixed- IP address. Simcard is provided by Ge:Net.
GSM mobile Network
Internet
Measurement system connects via GPRS to the internet and sources fixed- IP address.
The Measurement system is accessible via a secure- VPN Connection from every Computer th
Data collection and real time data view are possible using PC400 Software provided by Ge:N
Technical description Features:
- Encrypted data transfer. Connecting only possible via unique username and passwo
- Sending automatic emails with current meteorological data and daily recorded data.
- Upload recorded data to FTP- Serve
- Data retrieval costs of approx. 35/month (depending on the needed data volume: 35/m
- High Communication speed (up to 57,6kBits/s)
Advantages - Easy to use, no special software required
- No extra hardware required to download data from the office, internet connection sufficie
- Low Power requirements
- Not possible if GSM Network isnt available/Signal is weak
Disadvantages - Only available in 19 countries: Albania, Belgium, Germany, France, Greece, UK, Ireland,
Austria, Portugal, Romania, Switzerland, Spain, Czech Republic, Turkey, Hungary
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3.Remote Access using LoggerNet - Software
Technical description Measurement system connects via GPRS to the internet and sources dynamic IP Address. The
the PC running LoggerNet. The measurement system is accessible via LoggerNet Software.
Data collection and real time data view are possible using LoggerNet .
Features:
- Sending automatic emails with current meteorological data and daily recorded data.
- Upload recorded data to FTP- Serve
- Automatic data retrieval
Advantages - Local simcards can be used
- Low priced data tariffs for data transfer can be used
- High Communication speed (up to 57,6 kBits/s)
- Automatic data retrieval possible
- No extra hardware required to download data from the office
- Available in every country, where GSM Network is available
- Low Power requirements
Disadvantages - Not possible if GSM Network is not available/Signal is weak
- Additional work to integrate LoggerNet Software on PC and to integrate the software in the
Must be installed by an engineer of Ge:Net on clients PC/Network.
PC with internet
Connection and LoggerNet
Ge:Net Measurement System with GSM/GPRS Modem.
Modem equipped with local simcard (GPRS service GSM mobile Network
Internet suD
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4.Remote Access via Satellite (BGAN)
Internet
Ge:Net Measurement Systemwith BGAN satellite- modem.
BGAN Satellit
(broadband internet)
Technical description Measurement system connects via Satellite to the internet and sources Fixed IP Address.
Connection is established from measurement system to PC. Data collection and real time data view
Software, provided by Ge:Net.
Features:
- Sending automatic emails with current meteorological data and daily recorded data.
- Upload recorded data to FTP- Serve
Advantages - Available all over the world, except latitude > 70 (polar caps)
- Independent from local GSM Networks
- High Communication speed (up to 384 kBits/s)
- No extra hardware required to download data from the office, any kind of internet connection i
Disadvantages - Additional costs, because additional hardware is required for measurement system
- Compared to GSM Communication higher communication costs
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5. Example: Automatic Email
An example of an email that our measurement system sends every night is shown below. The email gives a short
overview about all values measured at the tower. By checking the email every day broken sensors (e.g. due to
lightning strike or broken bearings) can be detected. The shown values are current values taken from the last
measurement. Wind speeds and Wind direction values are measured every 2 seconds , Temperature, Humidity
and Barometric pressure are measured every 10s (Different scan rate on request).
Hello,
this is an automatic message from site XY1_A.
Windspeed
V1 : 15.01 m/s
V2 : 15.66 m/s
V3 : 15.72 m/s
V4 : 15.10 m/s
Vertical
Vz : 0.43 m/s
Angle of Wind Flow
Vagl : 1.64
Winddirection
D1 : 36.09
D2 : 35.55
Temp/Baro/Humidity
T1 : 12.32 C
H1 : 47.79 RH
P1 : 960.47 hPa
PTemp : 13.21 C
UBatt : 12.65 V
LiBatt: 3.55 V
Loggers Serial # : 21525
Loggers OSVersion : CR1000.Std.16
Loggers PakBus : 50
Program running : CPU:XY1_A_Main_091119.cr1
Start time : 11/19/2009 14:31:10.4294949310
Compile Result : CPU:AbR1_A_Main_091119.cr1 -- Compiled in PipelineMode.
Connection possible...
.. via PC400 via IP-address 172.25.72.0 between 10:0 and 18:0 data logger time.
In the meantime communication is disabled to reduce power consumption.
Communication is disabled when battery voltage drops below 12.0V
Data recording is still enabled.
Datalogger time is : 10/14/2009 03:27:00.36
Goodbye!
www.genetworld.com
Overview of data shown in the Email:
Symbol Description Unit
V1 Wind speed at top of the tower in e.g. 85m height m/s
V2 Wind speed in e.g. 84m height m/s
V3 Wind speed in e.g. 60m height m/s
V4 Wind speed in e.g. 40m height m/s
Vz Vertical Wind speed (pos = up wind neg.=down wind) (optional) m/s
D1 Wind direction in e.g. 84m height
D1 Wind direction in e.g. 60m height
T1 Temperature
H1 Relative Humidity (optional) % RH
P1 Barometric Pressure hPa
PTemp Internal Temperature of Data logger C
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UBatt Battery voltage V
LiBatt Battery voltage of internal battery V
Loggers Serial Unique Serial Number of Data logger
Loggers OSVersion Version of installed operating system (Required to start the program running)
Loggers PakBus Data loggers unique PakBus address. Required when connecting to the data logger
Program runningProgram name of data logger software running (takes measurements, handles
communication,)
Start time Date and time when program was started/ date of last power on
The data logger program must be compiled by the data loggers firmware. If any problems occur
during this start-up process it is shown here.Compile Result
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6. Example: Recorded data
All measured values are processed to average values which are stored in the data loggers battery backed
memory. It is possible to record wind speed and other data up to 360 days1 in the data loggers memory without
collecting them in between. After data are collected from the data logger they can be opened with Excel or any
kind of editor that is able to open ASCII- Files.
1 2 3 4 5 6 7 8 9 10
Time & Date Num V1 V1sig V1min V1max V2 V2sig V2min V2max
2009-05-03 19:00:00 155 4.923 0.316 4.231 6.055 4.923 0.296 4.411 5.882
2009-05-03 19:10:00 156 4.45 0.312 3.727 5.191 4.488 0.283 3.622 5.199
2009-05-03 19:20:00 157 3.684 0.282 3.079 4.231 3.585 0.351 2.834 4.201
2009-05-03 19:30:00 158 2.937 0.303 1.783 3.751 2.872 0.256 2.203 3.622
2009-05-03 19:40:00 159 2.646 0.163 2.191 3.031 2.574 0.159 2.046 2.939
2009-05-03 19:50:00 160 2.571 0.141 2.215 2.935 2.481 0.137 2.098 2.781
2009-05-03 20:00:00 161 2.607 0.159 2.119 2.959 2.489 0.147 2.046 2.834
2009-05-03 20:10:00 162 2.709 0.199 2.023 3.103 2.636 0.178 2.098 2.992
2009-05-03 20:20:00 163 3.108 0.342 2.119 3.679 2.977 0.315 2.203 3.622
2009-05-03 20:30:00 164 2.847 0.312 2.143 3.655 2.7 0.292 2.046 3.622
2009-05-03 20:40:00 165 3.132 0.209 2.647 3.727 2.941 0.19 2.519 3.622
2009-05-03 20:50:00 166 3.112 0.374 2.119 3.943 2.945 0.386 1.678 3.833
2009-05-03 21:00:00 167 2.9 0.322 2.335 3.775 2.761 0.356 2.098 3.57
2009-05-03 21:10:00 168 2.585 0.296 1.687 3.343 2.49 0.332 1.573 3.36
2009-05-03 21:20:00 169 2.505 0.209 1.855 3.199 2.35 0.231 1.467 2.992
2009-05-03 21:30:00 170 2.676 0.262 1.663 3.079 2.551 0.243 1.625 2.939
11 12 13 14 15 16 17 18 19 20 21 22
V3 V3sig V3min V3max V4 V4sig V4min V4max Vz Vzsig Vzmin Vzmax
4.939 0.303 4.389 6.055 4.935 0.259 4.069 5.831 -0.197 0.27 -1.099 0.995
4.515 0.292 3.616 5.21 4.57 0.272 3.562 5.3 -0.052 0.196 -0.534 0.774
3.669 0.342 2.988 4.389 3.706 0.369 2.887 4.335 -0.263 0.145 -0.666 0.03
3.029 0.227 2.505 3.64 3.097 0.23 2.356 3.611 -0.378 0.205 -0.864 0.19
2.692 0.137 2.312 3.012 2.721 0.201 2.139 3.152 -0.335 0.157 -0.923 -0.071
2.619 0.126 2.264 2.867 2.751 0.141 2.332 3.056 -0.274 0.091 -0.482 -0.075
2.571 0.149 2.167 2.892 2.68 0.134 2.332 3.007 -0.299 0.126 -0.644 0.004
2.679 0.178 2.095 3.012 2.571 0.165 2.042 2.911 -0.195 0.108 -0.548 0.002
3.014 0.329 2.095 3.616 2.862 0.278 2.018 3.562 -0.335 0.203 -0.804 0.306
2.699 0.294 2.095 3.423 2.566 0.268 1.801 3.297 -0.221 0.215 -0.821 0.404
2.943 0.161 2.529 3.423 2.8 0.191 2.307 3.466 -0.275 0.166 -0.914 0.074
2.944 0.375 1.829 3.858 2.769 0.259 1.97 3.611 -0.339 0.206 -0.981 0.141
2.765 0.383 2.046 3.64 2.573 0.395 1.463 3.514 -0.276 0.26 -1.591 0.665
2.422 0.322 1.467 3.205 2.229 0.361 1.197 2.911 -0.017 0.243 -0.687 0.648
2.361 0.246 1.491 3.061 2.215 0.337 1.39 3.056 -0.337 0.292 -1.168 0.34
2.609 0.23 1.805 3.133 2.459 0.204 1.921 2.983 -0.476 0.246 -0.965 0.234
23 24 25 26 27 28 29 30 31 32
D1 D1sig D2 D2sig T1 P1 Roh Ubatt PTemp H1
200.4 3.871 201.9 5.59 5.299 862 1.078 12.13 7.899 97.4
203.9 3.75 204.2 4.546 5.214 862 1.079 12.13 7.699 97.5
204.5 4.243 202.1 5.153 5.18 862 1.079 12.12 7.508 97.9
213.2 3.965 206.3 6.117 5.264 862 1.079 12.12 7.302 98
204 7.464 197.1 11.02 5.594 862 1.077 12.12 7.144 97.1
218.9 6.801 211.7 5.558 6.153 862 1.075 12.12 7.021 92.3
203.6 13.66 199.1 5.576 6.795 862 1.073 12.12 6.939 86.1
210.8 12.77 198.9 7.857 6.927 862 1.072 12.12 6.877 85.2
223.9 9.69 213.2 8.82 7.418 862 1.07 12.11 6.829 79.3
218.3 7.374 211.9 6.562 7.591 862 1.07 12.11 6.796 77.99
220.9 7.303 215.1 5.343 7.417 862 1.07 12.11 6.774 79.35
223.9 13.47 212.1 8.71 7.275 862 1.071 12.11 6.737 79.88
221.3 13.53 210.4 9.39 6.996 862 1.072 12.11 6.698 81.9
216.7 10.88 203.9 10.71 7.273 862 1.07 12.11 6.651 77.9
221.8 11.53 206.6 9.41 7.312 862 1.07 12.11 6.604 77.71
220.6 18.84 204.5 10.18 7.165 862 1.071 12.11 6.577 81.5
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Overview about data records
Symbol Description Unit
V1 Average wind speed at top of tower in e.g. 85m height in interval * m/s
V1_sig Standard deviation of recorded Wind speeds measured in interval * m/s
V1_min Smallest wind speed measured in interval * m/s
V1_max Highest wind speed measured in interval * m/s
D1 Average of Wind direction in e.g. 84m height in interval *
D1_sig Standard deviation of Wind direction in e.g. 84m height in interval *
T1 Average Temperature in interval * C
P1 Average Barometric Pressure in interval * hPa
Roh Average Air density calculated by Temperature and Barometric pressure *
UBatt Average Battery Voltage in interval * V
PTemp Average Internal Temperature of data logger in interval * CH1 Average Relative Humidity in interval in interval * %RH
* The recording interval is 10 minutes.
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7. Examples: Figures of wind speed and temperature
Recorded data can be analysed using View- Software (included in PC400/LoggerNet).
Graph showing wind speeds in 65m (red) and 40m (blue) (X- axis is time, Y- axis are windspeeds in m/s)
Graph showing temperature from 05.05.2009 til 09.05.2009. (X- axis = date and time, Y- axis =Temperature in C)
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8. Features: Automatic Protocol File
Values measured by the data logger are raw- data like frequency or voltages. To process them to physical values calibration data are necessary. E.g. the anemom
must be processed to physical dimension like m/s using the calibration data e.g.Hz
sm/048.0 and sm2.0 .
sm
sm
HzsmHz 8.42.0048.0100 / =+
Every Anemometer has its own calibration certificate and therefore specific calibration data. To safeguard that the right calibration data are used to calculate an
written to a protocol file, every time there was a change in the logger program (e.g. calibration file), or the data logger was re- started because of a power- down
It is not possible to change calibration data without re- start the data logger.
Example protocol file for station with 2 Anemometer, 1 Windfane, Temperature and humidity sensor.
For an example the calibration data for V1 and V2 were changed on 08/19/2009, the offset values for d1 were changed at 08/31/2009, 09/07/2009.
Protocol- file from station XY1_A
Serial Number: 3733
OS Version: CR800.Std.07
started 08/19/2009 16:45:48.74
SerialNumber TimeStamp v1_factor v1_offset v2_factor v2_offset d1_factor d1_offset t1_factor t1_off
3733 08/19/2009 16:45:48.89 0.04800 0.220 0.04800 0.220 360 0 20 -30
3733 08/19/2009 16:52:20.53 0.04824 0.253 0.04825 0.234 360 0 20 -30
3733 08/19/2009 16:54:44.68 0.04824 0.253 0.04825 0.234 360 0 20 -30
3733 08/19/2009 21:17:11.92 0.04824 0.253 0.04825 0.234 360 0 20 -30
3733 08/21/2009 17:41:26.65 0.04824 0.253 0.04825 0.234 360 0 20 -30
3733 08/31/2009 13:51:14.08 0.04824 0.253 0.04825 0.234 360 -10 20 -30
3733 09/07/2009 10:59:01.37 0.04824 0.253 -12 200.04825 0.234 360 -30
Entry Description
Serial Number Unique Serial Number of Data logger.
Timestamp Time stamp when datarecord was written
XY_factor Calibration data of sensor XY (Faktor, e.g. 0.04824 for V1)
XY_offset Calibration data of sensor XY (Offset, e.g. 0.253 for V1)
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Continued
TimeStamp DataRecordSize DataFillDays USRDriveSize USRDriveFree MemoryFree Result MemTest Result Mem
08/19/2009 16:45:48.89 66721 463.3402 84992 82432 15736 Success - Memory OK 0
08/19/2009 16:52:20.53 66721 463.3402 84992 81408 15736 Success - Memory OK 0
08/19/2009 16:54:44.68 66721 463.3402 84992 80896 15736 Success - Memory OK 0
08/19/2009 21:17:11.92 66721 463.3402 84992 80384 15736 Success - Memory OK 0
08/21/2009 17:41:26.65 66721 463.3402 84992 55296 15736 Success - Memory OK 0
08/31/2009 13:51:14.08 66721 463.3402 84992 78848 15656 Success - Memory OK 0
09/07/2009 10:59:01.37 66721 463.3402 84992 78336 15712 Success - Memory OK 0
Entry Description
DataRecordSize Maximum Number of Records that can be stored in the data table
DataFillDays Number of days to fill the table.
USRDriveSizeSize of the USER drive in bytes. This drive is used to store the protocol file and as temporary
drive to send emails. The drive itself is PIN-protected.
USRDriveFree Free amount of bytes on USR. Should be > 35000.
MemoryFree Amount (in Bytes) of unallocated memory on the CPU (SRAM)
Success
SRAM m
Excha
OS Sign
Data l
Result MemTest Result of Memory test on start- up.
Serial FL
exchan
Result MemTest Result of Memory test on start- up in numerical format 0,1,2,3
SRAM_ MemSize Total Amount of SRAM installed in the data logger (4MB = 4194304 Bytes, or 2MB) 4MB
FreeSRAM Free SRAM, not allocated for data tables or Program code Ca. 5000
FlashOS Amount of Bytes used by Firmware in serial flash. (Not SRAM) Ca. 1.5 M
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Continued
LithiumBattery OS-Version Program name Program signature Run signature Start Time
3.483344 CR800.Std.07 CPU:Sk2_A_Main_090721.cr8 54284 10255 08/19/2009 16:44:48.4294936355 CPU
3.476593 CR800.Std.07 CPU:Sk2_A_Main_090721.cr8 54284 26473 08/19/2009 16:51:20.4294888872 CPU
3.475918 CR800.Std.07 CPU:Sk2_A_Main_090721.cr8 54284 26473 08/19/2009 16:53:45.4294924846 CPU
3.465117 CR800.Std.07 CPU:Sk2_A_Main_090721.cr8 54284 26473 08/19/2009 21:16:12.4294765852 CPU
3.49347 CR800.Std.07 CPU:Sk2_A_Main_090721.cr8 54284 26473 08/21/2009 17:40:27.187045 CPU
3.491445 CR800.Std.07 CPU:Sk2_A_Main_090721.cr8 54284 45767 08/31/2009 13:50:13.4294895349 CPU
3.473218 CR800.Std.07 CPU:Sk2_A_Main_090721.cr8 54284 64703 09/07/2009 10:58:02.41006 CPU
Entry Description
LithiumBattery Voltage of internal Lithium Battery used for Real-time clock and data storage, when no external power is ava
OS Version Version of the data loggers firmware
Program name Name of program that runs on the data logger to take measurements, save data and handle communication
Program
signature
Unique Fingerprint of the Program. If the program was changed this value will be different. This value chan
the behaviour of the program (e.g. adding a comment to the program code)
Unique Fingerprint of compiled program (binary fingerprint). Changes if the functional part of the program co
the program code does not influence the Run Signature.Run Signature
StartTime Start Time of program
After the data logger has compiled the program, it returns the result of the compilation. If there are any error
entry.Compile Result
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9. Security
Data security is an important issue. Therefore every Measurement system is protected by a unique security- Code. Without
the Security Code it is not possible to download recorded data or to change any of the settings of the data logger even if you
are at the site.