MT 4611287 GERMANY CONFIGURATION DESCRIPTION for MAWS100 AWS 3 July 2006 Vaisala 2006 © Vaisala 2006 No part of this document may be reproduced in any form or by any means, electronic or mechanical (including photocopying), nor may its contents be communicated to a third party without prior written permission of the copyright holder. 2006-07 MAWS100 Configuration Description 1. MAWS100 SYSTEM CONFIGURATION ...................................................................... 2 2. SENSORS ................................................................................................................... 3 3. CALCULATIONS ......................................................................................................... 4 4. 5. 3.1 Wind Speed and Direction ............................................................................. 4 3.2 Air Temperature and Relative Humidity ........................................................ 4 3.3 Dew Point Temperature ................................................................................. 4 3.3.1 Formula to Calculate Dew Point Temperature ................................... 4 3.4 Air Pressure .................................................................................................... 5 3.4.1 Formula to Calculate QFE Pressure .................................................. 5 3.4.2 Formula to Calculate QNH Pressure ................................................. 5 3.4.3 Formula to Calculate QFF Pressure .................................................. 6 3.5 Precipitation ................................................................................................... 6 SERIAL LINES ............................................................................................................ 7 4.1 Serial Line COM 0 ........................................................................................... 7 4.2 Serial Line COM 1 ........................................................................................... 7 4.3 Communication Module 1 .............................................................................. 7 4.3.1 Serial Port 1 ...................................................................................... 7 4.3.2 Serial Port 2 ...................................................................................... 7 4.4 Communication Module 2 .............................................................................. 8 OUTPUT MESSAGES ................................................................................................. 9 5.1 YourVIEW1 ...................................................................................................... 9 5.2 YourVIEW2 ...................................................................................................... 9 5.3 Total .............................................................................................................. 11 5.4 List ................................................................................................................ 11 6. LOGGING ................................................................................................................. 14 7. DRAWINGS ............................................................................................................... 15 2006-07 1 MAWS100 Configuration Description 1 2006-07 MAWS100 SYSTEM CONFIGURATION Automatic Weather Station MAWS100 measures sensors and generates calculations and several different types of message outputs. System includes three separate serial lines: The serial line COM 0 is dedicated to message outputs and mainly to work as a maintenance line. The serial line COM 1 is dedicated to receive data from the Weather Transmitter WXT510. The serial port 1 of the communication module 1 (DSU232_0_0) is dedicated to send out two different YourVIEW messages via DXE421 Ethernet Module to the PC equipped with the YourVIEW Graphical Display Software. 2 2006-07 MAWS100 Configuration Description 2006-07 2 SENSORS Automatic Weather Station MAWS100 is configurated to measure following sensors: 2006-07 Sensor name and identifier Sensor type MAWS Measuring channel range Measuring interval Wind Speed (WS) WXT510 COM 1 0...60 m/s 1s Wind Direction (WD) WXT510 COM 1 1...360 ° 1s Air Temperature (TA) WXT510 COM 1 -52...+60 °C 60 s Relative Humidity (RH) WXT510 COM 1 0...100 % 60 s Air Pressure (PA) WXT510 COM 1 600…1100 hPa 60 s Precipitation (PR) WXT510 COM 1 0…200 mm 60 s 3 MAWS100 Configuration Description 3 2006-07 CALCULATIONS Automatic Weather Station MAWS100 calculates average, minimum and maximum values for all the measured data. 3.1 Wind Speed and Direction For the wind data system calculates 3 second, 2 minute and 10 minute average, maximum and minimum values. 3.2 Air Temperature and Relative Humidity For the air temperature and relative humidity system calculates 10 minute and 1 hour average, maximum and minimum values. 3.3 Dew Point Temperature From the measured air temperature and relative humidity system calculates 10 minute and 1 hour average, maximum and minimum values for the dew point temperature. 3.3.1 Formula to Calculate Dew Point Temperature The dew point temperature is the temperature to which the air must be cooled at a constant pressure to produce saturation. The DP is calculated using the following formula: DP where: a c b 273.16 a c b 2 = ln 100 RH b = 15.0 * a -2.1 * TA + 2711.5 c = TA + 273.16 TA = Measured air temperature [°C] RH = Measured relative humidity [%] 4 2006-07 MAWS100 Configuration Description 2006-07 3.4 Air Pressure For the air pressure system calculates 10 minute and 1 hour average, maximum and minimum values. From the measured air pressure system calculates also 1 minute average values for the QFE, QNH and QFF pressures. 3.4.1 Formula to Calculate QFE Pressure QFE is the actual atmospheric pressure at the level of the station altitude or at the height of the runway threshold. The difference of the pressure sensor level and the station altitude (or runway threshold) is indicated by the pressure sensor (pslevel) setting in the MAWS100. QFE is normally used for aviation purposes. The QFE is calculated using the following formula: QFE PA e where: 3.4.2 HS 7996bHS 29.33TA PA = Measured air pressure [hPa] HS = The height of the pressure sensor from the station level or from the runway treshold level [m], set by the pslevel command. b = 0.0086 °C/m TA = Measured air temperature [°C] Formula to Calculate QNH Pressure QNH is the atmospheric pressure at the sea level in the standard atmosphere. The station altitude is indicated by station altitude setting in MAWS100 (difference of mean sea level and station altitude). QNH is used for aviation purposes (included e.g. in METAR message). The QNH is calculated using the following formula: QNH QFE e where: 0.03416HR1d 288.2cHR c = 0.00325 °C/m d = 0.19025 * ln QFE 1013.2315 HR = Station altitude [m], set by the altitude command. 2006-07 5 MAWS100 Configuration Description 3.4.3 2006-07 Formula to Calculate QFF Pressure QFF is the sea level pressure same as QNH, but value is corrected by the actual air temperature (or in some cases by virtual temperature = i.e. temperature 12 hours ago). QFF is used in synoptical observations (included in SYNOP message). The QFF is calculated using the following formula: QFF QFE e where: b HR 7996bHR29.33TA = 0.0086 °C HR = Station altitude [m], set by the altitude command TA 3.5 = Measured air temperature [°C] Precipitation For the precipitation system calculates 1 hour and 24 hour floating rain sum and the cumulative rain sum for the current and previous hour and also for the current and previous day. 6 2006-07 MAWS100 Configuration Description 2006-07 4 SERIAL LINES The serial lines of the Automatic Weather Station have different types of configurations to perform several specified tasks; Working as a Command Line Interpreter to operate with the MAWS100 or sending out reports to terminal, to view measured and calculated data. 4.1 Serial Line COM 0 Serial line COM 0 is mainly reserved for the maintenance operations. It is also dedicated to send out four different messages, automatically or after successful polling command, to the host PC. The line parameters are: RS232, 9600 baud, 8 data bits, 1 stop bit and None parity. 4.2 Serial Line COM 1 Serial line COM 1 is dedicated to receive data from the Weather Transmitter WXT510. The line parameters are: RS485 2-wire, 19200 baud, 8 data bits, 1 stop bit and None parity. 4.3 Communication Module 1 MAWS100 communication module slot 1 is equipped with the dual RS232 communication module DSU232. 4.3.1 Serial Port 1 Serial port 1 of the communication module (DSU232_0_0) is dedicated to send out two different YourVIEW messages via DXE421 Ethernet Module to the PC equipped with the YourVIEW Graphical Display Software. The line parameters are: RS232, 9600 baud, 8 data bits, 1 stop bit and None parity. 4.3.2 Serial Port 2 Serial port 2 of the communication module (DSU232_0_1) is reserved for the future use. The line parameters are: RS232, 9600 baud, 8 data bits, 1 stop bit and None parity. 2006-07 7 MAWS100 Configuration Description 4.4 2006-07 Communication Module 2 MAWS100 communication module 2 options are reserved for the future use. 8 2006-07 MAWS100 Configuration Description 2006-07 5 OUTPUT MESSAGES Automatic Weather Station MAWS100 generates two different YourVIEW messages to be sent automatically via COM 0 and DXE421 Ethernet module. These messages are generated once a second (YourVIEW1) and once a minute (YourVIEW2), directly after all the measurements and calculations have been completed. Also system generates two other messages Total and List to be viewed from the measured and calculated data. These messages are generated once a minute, directly after all the measurements and calculations have been completed and can be polled out via COM 0 with the commands total and list. NOTICE ! If some of the sensors included in the system measurement software are not connected or faulty, the fields in the report indicating measured and calculated values are reported as ////// and the value in the STATUS field is something else than 0. 5.1 YourVIEW1 Message contains measured values from the wind speed and wind direction. Message format is following: <SOH>WIND<STX>\t<WS>\t<WD>\t<ETX><CR><LF> <SOH> WIND <STX> \t <WS> <WD> <ETX> <CR> <LF> = Start of Header character = Message identification string = Start of Text character = Tabular character = Wind speed, 1 second instant value in m/s = Wind direction, 1 second instant value in = End of Text character = Carriage Return character = Line Feed character An example of the message output: ☺WIND☻ 1.9 287 ♥ For the testing purposes, this message can be polled out via serial line COM 0 with the command yv1. 5.2 YourVIEW2 Message contains measured and calculated values from the air temperature, relative humidity, dew point temperature, air pressure and precipitation. 2006-07 9 MAWS100 Configuration Description 2006-07 Message format is following: <SOH>PTU<STX>\t<TAI>\t<TAX>\t<TAM>\t<RHI>\t<RHX>\t<RHM>\t<DPI>\t <DPX>\t<DPM>\t<PAI>\t<PAX>\t<PAM>\t<PRI>\t<PR1>\t<PR24>\t<EMPTY>\t <PR1C>\t<PR1P>\t<EMPTY>\t<PR24C>\t<PR24P>\t <ETX><CR><LF> <SOH> PTU <STX> \t <EMPTY> = Start of Header character = Message identification string = Start of Text character = Tabular character = Empty field to correspond the YourVIEW message format <TAI> <TAX> <TAM> = Air temperature, 1 minute instant value in C = Air temperature, 1 hour maximum value in C = Air temperature, 1 hour minimum value in C <RHI> <RHX> <RHM> = Relative humidity, 1 minute instant value in % = Relative humidity, 1 hour maximum value in % = Relative humidity, 1 hour minimum value in % <DPI> <DPX> <DPM> = Dew point temperature, 1 minute instant value in C = Dew point temperature, 1 hour maximum value in C = Dew point temperature, 1 hour minimum value in C <PAI> <PAX> <PAM> = Air pressure, 1 minute instant value in hPa = Air pressure, 1 hour maximum value in hPa = Air pressure, 1 hour minimum value in hPa <PRI> <PR1> <PR24> <PR1C> <PR1P> <PR24C> <PR24P> = Precipitation, 1 minute instant value in mm = Precipitation, 1 hour floating sum in mm = Precipitation, 24 hour floating sum in mm = Precipitation, 1 hour (current) cumulative sum in mm = Precipitation, 1 hour (previous) cumulative sum in mm = Precipitation, 24 hour (current) cumulative sum in mm = Precipitation, 24 hour (previous) cumulative sum in mm <ETX> <CR> <LF> = End of Text character = Carriage Return character = Line Feed character An example of the message output: ☺PTU☻ 22.9 22.9 22.7 13 13 13 -7.2 -7.0 -7.2 1003.8 1004.0 1003.6 1.80 1.80 3.80 1.80 0.00 3.80 0.00♥ For the testing purposes, this message can also be polled out via serial line COM 0 with the command yv2. 10 2006-07 MAWS100 Configuration Description 2006-07 5.3 Total Message contains measured and calculated values from the air temperature, relative humidity, dew point temperature, air pressure, wind speed, wind direction, precipitation and power unit. An example of the message output: MAWS Total Report 2006-07-03 12:12:02 C: %: C: hPa: 2M m/s: 10M m/s: WIND DIRECTION 2M deg: 10M deg: PRECIPITATION mm: Floating Sum, Hour/Day mm: Cumul. Sum, Current/Previous Hour mm: Cumul. Sum, Current/Previous Day mm: AIR TEMPERATURE RELATIVE HUMIDITY DEWPOINT TEMPERATURE AIR PRESSURE WIND SPEED OPERATING VOLTAGE Vdc: Station: MAWS100 STATUS 0 0 INST 22.9 13 -7.2 0 1003.8 0 1.9 0 287 0 1.80 1.80 1.80 3.80 AVE 22.8 13 -7.1 1003.8 1.9 1.9 287 287 MAX MIN 22.9 22.7 13 13 -7.0 -7.2 1004.0 1003.6 1.9 1.9 1.9 1.9 287 287 287 287 3.80 0.00 0.00 0 12.448 NOTICE ! INST values for the air temperature, relative humidity, dew point temperature, air pressure and precipitation in the message are measured 1 minute instant values and for the wind speed and wind direction calculated 3 second average values. 5.4 List Message contains same values as on Total message, but in different message format (values separated with Tabular character). Message format is following: List\t<DATE>\t<TIME>\t<SNAME>\t<TAST>\t<TAI>\t<TAA>\t<TAX>\t<TAM>\t <RHST>\t<RHI>\t<RHA>\t<RHX>\t<RHM>\t<DPI>\t<DPA>\t<DPX>\t<DPM>\t<PAST>\t <PAI>\t<PAA>\t<PAX>\t<PAM>\t<WSST>\t<WSI>\t<WS2A>\t<WS2X>\t<WS2M>\t <WS10A>\t<WS10X>\t<WS10M>\t<WDST>\t<WDI>\t<WD2A>\t<WD2X>\t<WD2M>\t <WD10A>\t<WD10X>\t<WD10M>\t<PRST>\t<PRI>\t<PR1>\t<PR24>\t<PR1C>\t <PR1P>\t<PR24C>\t<PR24P>\t<AWSST>\t<VDC><CR><LF> List \t <DATE> <TIME> <SNAME> 2006-07 = Message identification string = Tabular character = MAWS100 AWS, System date in format YYYY-MM-DD = MAWS100 AWS, System time in format hh:mm:ss = MAWS100 AWS, Station name 11 MAWS100 Configuration Description 12 2006-07 <TAST> <TAI> <TAA> <TAX> <TAM> = Air temperature, 1 minute instant sensor status value = Air temperature, 1 minute instant value in C = Air temperature, 1 hour average value in C = Air temperature, 1 hour maximum value in C = Air temperature, 1 hour minimum value in C <RHST> <RHI> <RHA> <RHX> <RHM> = Relative humidity, 1 minute instant sensor status value = Relative humidity, 1 minute instant value in % = Relative humidity, 1 hour average value in % = Relative humidity, 1 hour maximum value in % = Relative humidity, 1 hour minimum value in % <DPI> <DPA> <DPX> <DPM> = Dew point temperature, 1 minute instant value in C = Dew point temperature, 1 hour average value in C = Dew point temperature, 1 hour maximum value in C = Dew point temperature, 1 hour minimum value in C <PAST> <PAI> <PAA> <PAX> <PAM> = Air pressure, 1 minute instant sensor status value = Air pressure, 1 minute instant value in hPa = Air pressure, 1 hour average value in hPa = Air pressure, 1 hour maximum value in hPa = Air pressure, 1 hour minimum value in hPa <WSST> <WSI> <WS2A> <WS2X> <WS2M> <WS10A> <WS10X> <WS10M> = Wind speed, 1 second instant sensor status value = Wind speed, 3 second average value in m/s = Wind speed, 2 minute average value in m/s = Wind speed, 2 minute maximum value in m/s = Wind speed, 2 minute minimum value in m/s = Wind speed, 10 minute average value in m/s = Wind speed, 10 minute maximum value in m/s = Wind speed, 10 minute minimum value in m/s <WDST> <WDI> <WD2A> <WD2X> <WD2M> <WD10A> <WD10X> <WD10M> = Wind direction, 1 second instant sensor status value = Wind direction, 3 second average value in = Wind direction, 2 minute average value in = Wind direction, 2 minute maximum value in = Wind direction, 2 minute minimum value in = Wind direction, 10 minute average value in = Wind direction, 10 minute maximum value in = Wind direction, 10 minute minimum value in 2006-07 MAWS100 Configuration Description 2006-07 <PRST> <PRI> <PR1> <PR24> <PR1C> <PR1P> <PR24C> <PR24P> = Precipitation, 1 minute instant sensor status value = Precipitation, 1 minute instant value in mm = Precipitation, 1 hour floating sum in mm = Precipitation, 24 hour floating sum in mm = Precipitation, 1 hour (current) cumulative sum in mm = Precipitation, 1 hour (previous) cumulative sum in mm = Precipitation, 24 hour (current) cumulative sum in mm = Precipitation, 24 hour (previous) cumulative sum in mm <AWSST> <VDC> = MAWS100 AWS, 1 second instant error status value = MAWS100 AWS, operating voltage in Vdc <CR> <LF> = Carriage Return character = Line Feed character An example of the message output: List 2006-07-03 12:12:02 MAWS100 0 22.9 22.8 22.9 22.7 0 13 13 13 13 -7.2 -7.1 -7.0 -7.2 0 1003.8 1003.8 1004.0 1003.6 0 1.9 1.9 1.9 1.9 1.9 1.9 1.9 0 287 287 287 287 287 287 287 0 1.80 1.80 3.80 1.80 0.00 3.80 0.00 0 6.448 2006-07 13 MAWS100 Configuration Description 6. 2006-07 LOGGING System saves three different log groups to an external 32 MB Flash Memory Card. Log group L0 contains 10 minute average data from the air temperature, relative humidity, dew point temperature, air pressure and 10 minute average, maximum and minimum data from the wind speed and wind direction. Log group is saved every 10 minutes to the internal memory of the logger and copied to the memory card at midnight. Old data is kept on the memory 30 days. Log group L1 contains 1 hour average, maximum and minimum data as well as 1 minute instant data from the air temperature, relative humidity, dew point temperature and air pressure. Also log groups contains 1 minute instant precipitation data, 1 hour floating rain and cumulative rain sum from the current and previous hour. Log group is saved once an hour to the internal memory of the logger and copied to the memory card at midnight. Old data is kept on the memory 30 days. Log group L2 contains 24 hour floating rain sum, cumulative rain sum from the current and previous day and charging status of the power supply unit. Log group is saved once a day to the internal memory of the logger and copied to the memory card at midnight. Old data is kept on the memory 30 days. 14 2006-07 MAWS100 Configuration Description 2006-07 7. DRAWINGS The system configuration is detailed in the following drawings: DRW222947 and DRW222948. Drawing number DRW222947 (block diagram) gives a general overview of the system connections in the block level. Drawing number DRW222948 (wiring diagram) shows the wirings of the sensors and communication operations supported with the configuration. 2006-07 15