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7. USING THE ANEMOMETER WITH A PC RUNNING YOUR
SOFTWARE

7.1 Digital Serial Output Format

Data is sent in either binary or ASCII format as follows:

7.1.1 Binary Result Message Format

0xBA 0xBA StaA StaD Wc1H Wc1L Wc2H Wc2L Wc3H Wc3L CH CL TH TL A1H A1L ... AnH
AnL cc
where:
0xBA 0xBA

Start of result message identifier. 2 bytes, hex value BA.

StaA

- Status

Address

StaD

- Status

Data

Wc 1

- Wind

component

Wc 2

- Wind

component

Wc 3

- Wind

component

- Speed

sound

- Absolute

temperature

- Analogue

input

- Analogue

input

checksum of all bytes. The checksum is an exclusive OR of all
bytes excluding the 2 start bytes.

These fields are defined as follows:

Wind Component Fields

UVW format Wc1 U axis velocity in 0.01ms-1 units (Two's complement signed)

Wc2 V axis velocity in 0.01ms-1 units (Two's complement signed)

Wc3 W axis velocity in 0.01ms-1 units (Two's complement signed)

Polar format Wc1 U V plane velocity direction in ° relative to N.

Wc2 U V plane velocity magnitude in 0.01ms-1 units.
Wc3 W axis velocity in 0.01ms-1 units (Two's complement signed)

Axis Speeds Wc1 Ultrasonic axis 1 velocity in 0.01ms-1 units (Two's complement

signed)
Wc2 Ultrasonic axis 2 velocity in 0.01ms-1 units (Two's complement
signed)
Wc3 Ultrasonic axis 3 velocity in 0.01ms-1 units (Two's complement
signed)

Speed of Sound Field

Speed Of Sound

Speed of sound in 0.01ms-1 units (Unsigned)

HS-50 Research Anemometer

Page 23

Issue 02

Doc. No. 1199-PS-0032

November 2004

Содержание HS-50

Страница 1: ...User Manual Doc No 1199 PS 0032 Issue 02 Gill Instruments Ltd recognise all trademarks Gill Instruments Limited Saltmarsh Park 67 Gosport Street Lymington Hampshire SO41 9EG UK Tel 44 0 1590 613500 Fax 44 0 1590 613501 E mail anem gill co uk Website www gill co uk ...

Страница 2: ......

Страница 3: ...Gill Instruments Ltd HS 50 Research Anemometer Page 1 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 4: ...COM 11 5 1 PC Requirement 11 5 2 Installing RCOM 11 5 3 Starting RCOM 11 5 3 1 Command line options 11 5 3 2 Procedure if no anemometer is found 12 5 4 Main Menu 13 5 5 Trend Display 13 5 6 Trend Options 13 5 7 Display Micro met Parameters 13 5 8 Micro met Parameter Options 13 5 9 Tabular Display 13 5 10 Configure Anemometer 13 5 11 Options 13 5 12 Exit to DOS 13 5 13 Trend Display 14 5 14 Display...

Страница 5: ...orizontal Anemometer Head Electronics Mounting Details 42 1210 K 068 R3 HS Research Anemometer Measurement Sequence 43 Assembly of Amphenol C91A Screw Lock 4 Way Socket 44 12 TECHNICAL SPECIFICATION 45 12 1 Wind Measurement 45 12 2 Speed of Sound Measurement 45 12 3 Environmental 45 12 4 Supply Input 45 12 5 Serial Interface 45 12 6 Analogue Inputs 46 12 7 PRT 46 12 8 Anemometer Sync Output 46 12 ...

Страница 6: ...Gill Instruments Ltd RCOM Binary File Format 67 HS 50 Research Anemometer Page 4 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 7: ...extremely sophisticated instrument and to achieve optimum performance we recommend that you read the whole of this manual before proceeding further with use The Solent Range is in continuous development and so specifications may be subject to change without prior notice HS 50 Research Anemometer Page 5 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 8: ...ctive mode see Section 6 c By decoding the upper status addresses of the anemometer output message see Section 6 2 4 Corrosion Galvanic corrosion is possible unless stainless steel fixings are used for mounting the head and electronics unit This will ensure that the anemometer will provide long service under extreme conditions e g marine 2 5 Earthing For maximum protection against lightning the he...

Страница 9: ...o be configured and interrogated 3 3 Measurement Mode The principle of operation is described in Appendix B The parameters sampled are determined by the anemometer s configuration and consist of 1 Wind velocity axis velocities are always sampled 2 Speed of Sound SoS 3 Analogue Inputs 6 4 Absolute Temperature PRT100 The way in which the results are calculated formatted and reported depends upon the...

Страница 10: ...ic Temperature K 3 Sonic Temperature C Speed of sound measurements can be disabled The absolute temperature measurement results can be output in one of the following formats 1 Absolute Temperature K 2 Absolute Temperature C Absolute temperature measurements can be disabled 3 7 Analogue Input Reporting Formats If ASCII format is selected analogue input measurements are output in volts to 4 decimal ...

Страница 11: ...ent mode by sending the anemometer the appropriate command In this mode the user can communicate with the anemometer issuing configuration commands to the anemometer or requesting information from the anemometer 3 12 Configuration Commands Configuration commands allow the user to configure the anemometer as required The configuration parameters are held in non volatile storage allowing the anemome...

Страница 12: ... conversion of the RS422 signal sent by the EU and the RS232 signal required by a PC The PCI requires connection to a mains power supply or DC Computers other than IBM PC s or compatibles may require a customised cable for connection to the PCI The anemometer outputs data through a connector on the EU Data is provided in RS422 format only and reconstituted to analogue if required at the PCI Baud r...

Страница 13: ...an anemometer When an anemometer is found the main menu is displayed 5 3 1 Command line options The RCOM program may be passed one or more command line parameters Cn Sets the COM port to use for the anemometer Valid settings are n 1 2 3 or 4 Default is COM1 CBn Serial port base address If your PC has non standard serial ports it may be necessary to set the base address of the port Usually the PC c...

Страница 14: ...at the anemometer has no power the anemometer may be awaiting a command over the serial link 2 Check that the COM port displayed COM2 in the above example is correct If not select option 2 on the menu and select the correct comms port 3 Select option 1 on the menu The software will seek the anemometer again If you are using an indoor Power and Communications Interface PCI the TX LED should flash d...

Страница 15: ...meteorological parameters in real time Raw data and calculated parameters can be written to disk See Section 5 14 5 8 Micro met Parameter Options This allows the user to select which micro meteorological parameters to display and which micro meteorological parameters to download to disk See Section 5 15 5 9 Tabular Display This gives a scrolling display of wind measurement Maximum and minimum valu...

Страница 16: ...e are displayed in m s 1 Direction is displayed in degrees Temperatures are displayed either in Kelvin or degrees Celsius Analogue inputs are in volts Each display is scaled individually In the example below the W vector is scaled at 5m s 1 whilst U and V are scaled at 2m s 1 Pressing the Alt and D keys simultaneously Alt D will initiate a data download The user will be asked for a filename and th...

Страница 17: ...the main menu The example screen shows what would be displayed with mean and standard deviation U V and W covariance of U with V covariance of U with W covariance of V with W U and Cd selected for display Pressing the Esc key exits this display and returns to the main menu Micro met Parameters Gill Instruments Ltd Mean U 0 168 m s Mean V 0 001m s Mean W 0 140 m s Usig 0 237 m s Vsig 0 166 m s Wsig...

Страница 18: ...al Stand Devs Input Means Disp Log Disp Log Disp Log Mean U 9 9 xsig X X Alp 1 X X Mean V 9 9 ysig X X Alp12 X X Mean W 9 9 zsig X X Alp3 X X Mean T X X Alp4 X X Turbulence Parameters Alp5 X X Stnd Devs Disp Log Disp Log tx X X Usig X X ty X X Input Stnd Devs Vsig X X tz X X Disp Log Wsig X X u X X Alp1sig X X Tsig X X T X X Alp2sig X X Cd X X Alp3sig X X Covariances L X X Alp4sig X X Disp Log F X...

Страница 19: ...Alt D combination will stop the download without ending the display Pressing the Alt and C keys simultaneously Alt C will clear the screen and start the data display from the top of the screen It does not clear the maximum and minimum display Pressing the Esc key will stop any download that is in progress terminate the display and return the user to the main menu Data Display Gill Instruments Ltd ...

Страница 20: ...ue between 2 and 250 The example shows the Message Mode sub menu popped up over the configuration screen Selecting EXIT or pressing the Esc key exits this menu and returns to the main menu 2 Configuration Gill Instruments Ltd Serial Number 0123456 Data Reported Reporting Speed Report Mode UVW CAL Average 10 Speed of Sound mode SPEED Baud Rate 19200 Absolute Temp Mode OFF Analogue String Format Cha...

Страница 21: ... for Convert 3 are provided in Section 5 21 The binary file format is specified in Appendix E Output Field Separator Output Line Terminator and Download format affect downloads from the trend display the micro met parameter display and the tabular display Selecting Display Maxima and Minima toggles the display of maximum and minimum values in tabular display on or off Selecting Output Period allow...

Страница 22: ...umber Transducer pair s X at n gain Indicates that one or more transducer pairs indicated by X is at a high gain setting 50 90 or 100 indicated by n 5 21 Instructions For Using The Binary To ASCII Conversion Utility Convert 3 is used with RCOM the Solent R3 HS and HS 50 research anemometer PC software A binary file is converted to ASCII DOS command line options convert3 input file name output file...

Страница 23: ...ts to 4 decimal places If no selection of additional data is made then all the available data is converted A reminder of the above commands can be obtained by typing convert3 help HS 50 Research Anemometer Page 21 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 24: ...r viewing HS 50 output and or configuring the HS 50 using Interactive Mode Refer to the Software Commands section for details on the Interactive Mode command set Port Configuration The serial communications port can be configured via the Terminal Configure Ports dialog The port status is shown at the bottom of the application window Data logging Output can be directed to a file using the Terminal ...

Страница 25: ...art bytes These fields are defined as follows Wind Component Fields UVW format Wc1 U axis velocity in 0 01ms 1 units Two s complement signed Wc2 V axis velocity in 0 01ms 1 units Two s complement signed Wc3 W axis velocity in 0 01ms 1 units Two s complement signed Polar format Wc1 U V plane velocity direction in relative to N Wc2 U V plane velocity magnitude in 0 01ms 1 units Wc3 W axis velocity i...

Страница 26: ...3 Wind component 3 C Speed of sound T Absolute temperature A1 Analogue input 1 An Analogue input n ETX End of string character ASCII value 3 cc checksum of all characters between STX and ETX TERM CR or CR LF user selectable These fields are defined as follows Wind Component Fields UVW format Wc1 U axis velocity in 0 01ms 1 units UU UU Wc2 V axis velocity in 0 01ms 1 units VV VV Wc3 W axis velocity...

Страница 27: ...ddress Function 00 Error codes 01 Anemometer configuration 02 Data output configuration 1 03 Data output configuration 2 04 Error code history 05 Transducer gain levels 06 Anemometer Type 07 Inclinometer X axis MSB 08 Inclinometer X axis LSB 09 Inclinometer Y axis MSB 10 Inclinometer Y axis LSB In normal operation the anemometer output cycles through the status codes 01 06 at each output sample If...

Страница 28: ...0 Wind mode UVW 01 Wind mode axis 10 Polar 360 wrap 11 Polar 540 wrap Bits 3 2 00 10ms 1 Full Scale Deflection 01 20ms 1 Full Scale Deflection 10 30ms 1 Full Scale Deflection 11 60ms 1 Full Scale Deflection Bits 5 4 00 SOS report off 01 SOS report speed of sound 10 SOS report sonic temp K 11 SOS report sonic temp C Bits 7 6 00 PRT temp off 01 PRT temp K 10 PRT temp C 11 Reserved 12 Address 02 is r...

Страница 29: ...ved 1 Reserved 2 Reserved 3 Reserved 4 Non volatile memory error 5 PRT failed 6 Reserved 7 Reserved The error history is cleared when the user enters interactive mode Address 05 Transducer gain levels Bits 1 0 00 Channel pair 1 nominal 01 Channel pair 1 50 10 Channel pair 1 90 11 Channel pair 1 100 Bits 3 2 00 Channel pair 2 nominal 01 Channel pair 2 50 10 Channel pair 2 90 11 Channel pair 2 100 B...

Страница 30: ...ated by spaces and terminated by either CR or CR LF The case of the characters in the command is ignored Commands are only valid whilst in the interactive mode with the exception of the enter interactive mode command and polled data request command ASCII Output String Termination The ASCII output string terminator can be configured to be either CR or CR LF The expression TERM is used to indicate e...

Страница 31: ...scriptions use a modified form of the BNF format Option one option from a list separated by the vertical bar must be included in the command Parenthesis used to make the possible combinations unambiguous Option the symbols within the square braces are optional n m Repeat the symbols inside the braces can be repeated n to m times If n is not included then 0 is implied if m is not present then infin...

Страница 32: ...ied analogue inputs Parameters ipno Analogue input channel number D Disable specified channels E Enable specified channels AOPFSD Syntax AOPFSD 10 20 30 60 Description Specifies the analogue outputs full scale deflection Used to configure the analogue output box only POLARWRAP Syntax POLARWRAP 360 540 Description Specifies the analogue outputs polar reporting wrap angle Used to configure the analo...

Страница 33: ...Syntax CTONE ON OFF DISABLE Description Enables an audible confidence tone Parameters ON Enables the confidence tone OFF Disables the tone until the anemometer is next powered up DISABLE Disables the tone until the function is enabled using CTONE ON Syntax Description Request the current results message when in polled mode HELP Syntax HELP Description Reports a brief description of all the availab...

Страница 34: ...mands have been carried out The verification message is the command name prefixed by V e g VAVERAGE for and AVERAGE command Parameters E enables verification messages D disables verification messages ALIGNUVW Syntax ALIGNUVW AXIS SPAR Description Selects UVW alignment from two alternative definitions Parameters AXIS Aligns the U axis to transducer axis 1 when viewed from above SPAR Aligns the U ax...

Страница 35: ... at the anemometer minus 1 5 volts The sensor supply voltage is internally regulated to 21 2 volts for anemometer supply voltages above 22 volts For sensors with a common supply and signal ground this ground should be connected to Sensor Supply In this situation Analogue Input should be connected to Sensor Supply and Analogue Ground left floating The total current drawn from the sensor supply by a...

Страница 36: ...in out 1 Sensor power 2 Analogue input 6 3 Analogue input 6 4 Analogue ground 5 PRT excitation 6 PRT excitation 7 PRT sense 8 PRT sense 9 Sensor power 10 Chassis screen PRT connection diagram PRT excitation PRT sense PRT 100 PRT sense PRT excitation For correct operation the PRT connections must be isolated from the rest of the system HS 50 Research Anemometer Page 34 Issue 02 Doc No 1199 PS 0032 ...

Страница 37: ... when configuring the anemometer For direction in polar format the 2 5V output range represents either 360 or 540 This option is also set up when configuring the anemometer either using the supplied RCOM software or using the anemometer s interactive mode commands The direction representation is Output voltage V 2 5 0 833 0 0 833 2 5 360 180 0 180 540 0 180 360 540 The 540 mode avoids the output o...

Страница 38: ... are valid i e the full set of configuration data have been received from the anemometer and there are no data errors for the current output data The pin assignment and electrical specification of the status output are contained in Section 13 10 5 Test Modes The analogue output system includes two self test modes They are activated by the pulling low the relevant pin on the main 25 way connector a...

Страница 39: ...Gill Instruments Ltd 11 DRAWINGS HS 50 Research Anemometer Page 37 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 40: ...Gill Instruments Ltd 1086 M 043 Anemometer Cable Voltage Out HS 50 Research Anemometer Page 38 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 41: ...Gill Instruments Ltd 1189 K 022 Indoor PCI Unit Dimensions HS 50 Research Anemometer Page 39 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 42: ...Gill Instruments Ltd 1199 K 066 3 Axis Horizontal Anemometer U V W Axis Definitions HS 50 Research Anemometer Page 40 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 43: ...Gill Instruments Ltd 1199 K 089 3 Axis Horizontal Anemometer Head Electronics Mounting Details HS 50 Research Anemometer Page 41 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 44: ...OGUE INPUT MEASUREMENT 1 2 3 4 5 6 PRT SYNC 1 14mS 1 14mS 1 14mS 1 14mS 1 14mS 1 14mS 0 88mS 0 88mS TIME 10mS NOTES 1 L U indicates lower to upper transducer firing U L indicates upper to lower transducer firing 2 Serial output of the previous measurement commences as SYNC goes high HS 50 Research Anemometer Page 42 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 45: ...Gill Instruments Ltd Assembly of Amphenol C91A Screw Lock 4 Way Socket HS 50 Research Anemometer Page 43 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 46: ...s apply for wind speeds 32m s and for wind incidence within 50 of horizontal 12 3 Environmental Operating Temperature 40 C to 60 C Storage Temperature 50 C to 75 C Relative Humidity 5 to 100 Precipitation up to 300mm hr Altitude 0 to 3000m Moisture ingress IP65 Suitable for marine environment EMC Emissions BS EN 50082 1 1992 EMC Immunity BS EN 50081 1 1992 Input Output Protection 0 8J 12 4 Supply ...

Страница 47: ...solution 0 01 Accuracy 0 3 for tilt angles between 10 Null Repeatability 0 15 Temperature Coefficient Null 0 02 per C Temperature Coefficient Scale Factor 0 2 per C 12 10 Anemometer Power and Data Connector Hirose 20 way socket Connector pin Designation 1 Reserved 2 RS422TXB Data from anemometer 3 RS422TXA Data from anemometer 4 RS422RXB Data to anemometer 5 RS422RXA Data to anemometer 6 Supply V ...

Страница 48: ... for baud rates above 19200 baud or for cable lengths greater than 15 metres This is a desktop unit and not suitable for outdoor use 13 2 Connector Pin Assignments Anemometer Connector 15 way D type socket Pin Designation 1 Screen 2 RS422RXB Data from anemometer 3 RS422TXB Data to anemometer 4 Digital 0V signal ground 5 Supply V 6 Sync 7 Not used 8 Sync 9 RS422RXA Data from anemometer 10 RS422TXA ...

Страница 49: ...in Designation 1 PCI V 2 PCI V 3 Anemometer V 4 Anemometer V View of PCI Plug 1 4 3 2 Auxiliary Output 9 way D type plug Pin Designation 6 Anemometer Sync 7 Anemometer Sync Recommended Line Termination Note The above termination is for when the receive circuit is floating relative to the anemometer If the receive circuit is referred to Anemometer Signal Ground or Anemometer Supply then the earth c...

Страница 50: ...max PCI 8 15Vdc 90mA max PCI with analogue outputs Environmental The desk top PCI is not sealed and is intended for use in a protected environment Analogue Outputs The analogue outputs have the following specification Full scale range 2 5v to 2 5v Accuracy 0 25 of full scale 9 bits Resolution 14 bits over 3 0v Settling time 2ms to 0 25 accuracy note that the minimum time between samples is 10ms Ou...

Страница 51: ... Ltd Test 1 Test 2 Inputs Logic high inactive 3V to 5V or open circuit Logic low active 1V The above voltages are referenced to signal ground HS 50 Research Anemometer Page 49 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 52: ...Communications standard RS422 Communications standard SoS Speed of Sound RCOM Gill Instruments Ltd PC communications software PACKING LIST HS 50 anemometer comprising Head Electronics Unit 1 5m interconnecting cable Case RCOM software This manual OPTIONAL EXTRAS PCI Connectors PCI to EU cable Available in a range of lengths Custom software on application HS 50 Research Anemometer Page 50 Issue 02 ...

Страница 53: ...nsducers By arranging three pairs of transducers in different orientations the direction and magnitude of the incident air flow may be unambiguously derived The transducer pairs do not have to conform to cartesian axes For optimum undisturbed airflow a non orthogonal arrangement is employed The main functions of the electronics are operation of the ultrasonics processing of raw measurement data an...

Страница 54: ...Gill Instruments Ltd APPENDIX C Sonic Temperature Measurement HS 50 Research Anemometer Page 52 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 55: ...Gill Instruments Ltd HS 50 Research Anemometer Page 53 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 56: ...Gill Instruments Ltd HS 50 Research Anemometer Page 54 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 57: ...Gill Instruments Ltd HS 50 Research Anemometer Page 55 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 58: ...Gill Instruments Ltd HS 50 Research Anemometer Page 56 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 59: ...Gill Instruments Ltd HS 50 Research Anemometer Page 57 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 60: ...Gill Instruments Ltd HS 50 Research Anemometer Page 58 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 61: ...Gill Instruments Ltd APPENDIX D Micro Met Calculations HS 50 Research Anemometer Page 59 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 62: ...Gill Instruments Ltd HS 50 Research Anemometer Page 60 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 63: ...Gill Instruments Ltd HS 50 Research Anemometer Page 61 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 64: ...Gill Instruments Ltd HS 50 Research Anemometer Page 62 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 65: ...Gill Instruments Ltd HS 50 Research Anemometer Page 63 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 66: ...Gill Instruments Ltd HS 50 Research Anemometer Page 64 Issue 02 Doc No 1199 PS 0032 November 2004 ...

Страница 67: ... 1 unsigned char 0 continuous 1 polled confidence tone setting 1 unsigned char 0 on 1 off 2 disabled axis alignment setting 1 unsigned char 0 axis 1 spar speed_of_sound_report_mode 1 unsigned char 0 off 1 speed 2 sonictemp K 3 sonictemp C absolute_temperature_report_mode 1 unsigned char 0 off 1 K 2 C analogue_input_ 1_on 1 unsigned char 0 off 1 on analogue_input_ 2_on 1 unsigned char analogue_inpu...

Страница 68: ...4 anemometer status 1 unsigned char anemometer status address 1 unsigned char absolute temperature 2 unsigned short int 0 01K increments unsigned or short int 0 01 C increments signed speed of sound sonic temperature 2 unsigned short int in 0 01m s or 0 01K increments unsigned or short int 0 01 C increments signed analogue input 1 4 long analogue input analogue input 2 4 long analogue input 3 4 lo...

Страница 69: ...e inputs are stored in the binary file in 100uV increments from 5V to 5V If the anemometer output string format is binary then analogue inputs are stored in the binary file as follows Voltage Analogue Input Value 4 9994 8191 0 0000 0000 5 0000 8192 HS 50 Research Anemometer Page 67 Issue 02 Doc No 1199 PS 0032 November 2004 ...

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