genet measurement systems

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

Ge:Net GmbH


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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


- 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

Ge:Net GmbH


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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:



- 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


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

Ge:Net GmbH


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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:



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



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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1 Depending on the number of sensors installed


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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







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







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.

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