User Manual
Contents
1. Ultrasonic Wind Gauge User s Manual 77 ys SF O BB Table of Contents INTRODUCTION anan ii dci an del al sedas 2 OVERVIEW OF THE ULTRASONIC WIND GAUGFR 2 57751 1003 o on b il 3 EUE s b bl 4 S HANDLING A CAUTION m m 4 6 COMMUNICATION INTERFACES a ll 4 GENE r ei co E A 4 CD INPUTOUITPUT PORT onena O INTERFACE CONNECTION a m Sa a 5 20155 TION MODES 6 b de tal 6 FA AUTO CONTROLIMODE saia i s or a 6 2512 LOCASCON TROL MODE a e ral llas e a A O OS 7 APPENDIX A EXAMPLE OF MEASUREMENT FOR 100M HURDLES EVENT 9 APPENDIX B EXAMPLE OF MEASUREMENT FOR CONTINUOUS EVENT 10 APPENDIX C SETUP DIAGRAMS FOR PROPER DEVICE PLACEMENT 11 APPENDIX D LYNX CONNECTION AND CONTACT INFORMATION 12 APPENDIX E TROUBLESHOOTING TIPS i 1 Introduction Ultrasonic Wind Gauge referred to as USWG in this text 1s a one axis ultrasonic anemometer The instruments measure the transit time of the ultrasonic pulse between a2. 111213141516171819 7 2 Local Control Mode The default operation mode when powered on is Local Control mode In Local Control mode users may change the event setting by pressing ROLLY and ROLLT buttons and start reset the wind velocity measurement by pressing the START and RESET buttons Users also can control the start reset action in Local Control mode by pressing the remote start button if the remote starting cable is attached to the REMOTE port The last event setting of Local Control mode will be stored in the EEPROM memory of the gauge and will be recalled when next time powered on The function definitions of the control buttons is listed in Table 2 The configuration of LCD display for Local Control mode is depicted in Figure 4 Table 3 lists all events for Local Control mode in which the 8th event last result is used for recall the most recent wind velocity menasrement reading The time duration of wind velocity measurement for various event is listed in Table 4 For a detail operation of wind velocity measurement under various event please refer to Appendix A and B Button caption Function description when pressed ROLL Select next event item ROLL Select previous event item START Start countdown timer to take a wind velocity measurement RESET Reset countdown timer to prepare for measurement Table 2 Button function definitions for Local Control mode Upper line is for event indication and low battery warn
3. caps must be replaced 2 USWG is a precision instrument Do not touch or hammer or strike the two arms of the instrument 3 Carefully hold the body instead of the arms when handling the unit 4 Do not use in raining or thunder striking environment 6 Communication Interfaces USWG has two communication ports for automatic interaction with other devices through direct connection The two receptacles on the left side panel labeled REMOTE and INPUT OUTPUT provide the physical connection 6 1 REMOTE port A remote device connected to this port will receive wind velocity data automatically at the end of each wind velocity measurement The device must be RS232 compatible and be programmed to receive the formatted data streams 4 6 2 INPUT OUTPUT port A remote device connected to this port may both receive and send information to and from the wind gauge via serial communication The USWG may be started the time interval for wind velocity measurement may be set or reset and the most recent wind gauge measurement may be requested by the communicating device 6 3 Interface Connection USWG communicates with a computer via the serial communication port labeled INPUT OUTPUT on the left side panel of the gauge This serial communication port has RS485 line drivers for long distance communication up to 450 m Computer interface connection instructions 1 Plug the serial communication cable 9 pin D Subminiature male
4. Female DB9 Male Pin 2 Pin 3 Pin 3 Pin 5 Pin 5 m i Pin 6 Pin7 add jumper wire between 6 7 Lynx System Developers Inc 179 Ward Hill Ave Haverhill MA 01835 tel 978 556 9780 fax 978 556 9781 www finishlynx com 12 Appendix E Troubleshooting Check internal connections f your wind gauge suddenly stops working take off the back panel and check to see that the connections haven t come loose If they have simply put them back on and replace the back panel 13
5. Prepare for next wind velocity measurement Start another wind velocity measurement The most recent wind velocity measurement will be displayed O GE A A Appendix B Example of measurement for continuous event Press power switch 1 to turn on the unit ROLL button to set event as continuous ROLL button to change event setting If necessary press N Or button to event 8 to recall last wind velocity reading GILL ATHLETICS US Wind Gauge START or ROLL 1 sec or RESET sec or RESET 401 50 m sec START or ROLL 01 50 m sec 10 Display product information for 3 seconds Display last event setting ready for operation Select event setting as continuous Starts wind velocity measurement A flashing mark indicates measurement 1S going on Wind velocity is displayed and updated for every second Stop wind velocity measurement Stop wind velocity measurement select event setting The most recent wind velocity measurement will be displayed AK SEN S NF A TAHOLETJ CO S Appendix C Setup Diagrams For Proper Device Placement EVENT DIRECTION T GAUGE DIRECTION EVENT DIRECTION 2 GAUGE DIRECTION gt A F Bi fF if 5 Appendix D Lynx connection and Contact information Gill Wind Gauge Cable Computer End Wind Gauge End DB9
6. connector into the INPUT OUTPUT connector on the left side of the gauge 2 The cable and connector pin connections for short distance communication L lt 12 m are as follows Ultrasonic 77 L eo e Wind Gauge Connector connector Pin 3 TX Pin2 RX ns 32 Pin 5 RX Pin3TX us Pin 6 RX Pin 5 GND Pin 7 TX Connect pins 6 amp 7 Finish Lynx or PC Figure 2 Short distance communication connection 3 Long distance communication L gt 12 m requires an RS232 to RS485 converter to boost the computer or FinishL ynx signal The cable and connector pin connections are as follows DB 9 pin Male L gt Connector Pin 3 TX m Pin 7 TX S Pin 5 RX Pin 6 RX FinishLynx RS485 Cable with Terminators or PC Ultrasonic Wind Gauge RS232 to RS485 Converter Figure 3 Long distance communication connection 4 Configure the computer for transmission as follows Baud Rate 9600 Data Bits 7 Parity Even Stop Bits 1 7 Operation Modes USVVG can be operated manually or automatically via a remote computer Two operation modes are defined 1 Auto Control Mode a remote computer controls the wind velocity measurement through RS485 serial communication interface 2 Local Control Mode users operate the wind velocity measurement by using the four control buttons on the front panel or the remote starting cable 7 1 Auto Control Mode For Auto Control
7. ing Lower line is for wind velocity or countdown timer next action Figure 4 LCD display configuration for Local Control mode 6 gt triple jump T gt continuous gt 8 last result Table 3 Event list for Local Control mode 110m hurdles long jump 5 sec triple jump 5 sec continuous 1 sec Table 4 Time duration of wind velocity measurement for various event O A Or Appendix A Example of measurement for 100m hurdles event Description Press power switch 1 to turn on the unit ROLL button to set event as 100m hurdles If necessary press button before timer count down to zero to stop measurement ROLL button to change event setting If necessary press N or button to event 8 to recall last wind velocity reading GILL ATHLETICS US Wind Gauge 1 gt 100m START or ROLL 3 gt 100m hurdles START or ROLL 3 gt 100m hurdles 13 sec or RESET 3 gt 100m hurdles START or ROLL 3 gt 100m hurdles 01 50 m sec 3 gt 100m hurdles START or ROLL 3 gt 100m hurdles 13 sec or RESET 01 50 m sec Display product information for 3 seconds Display last event setting ready for operation Select event setting as 100m hurdles The timer starts to count down from 13 seconds to zero The countdown timer 1s reset and the measurement 1s aborted Measured wind velocity will be displayed at the end of countdown
8. mode a remote computer with FinishLynx software controls the wind velocity measurement through RS485 serial communication interface While the gauge goes into Auto Control mode an auto string followed by the measure interval will be displayed on LCD panel At this moment the four control buttons on front panel and the remote start button won t respond until the Auto Control mode exits The priority of Auto Control mode command is higher than Local Control mode operation Once the two operations conflict the Auto Control mode command will be executed Nevertheless mixing use of Local Control operation with Auto Control operation 1s prohibited 7 1 1 Command format for Auto Control lt 0x01 gt lt 0x 13 gt CW lt opcode gt lt 0x02 gt lt data gt lt 0x04 gt lt opcode gt RISITIO lt data gt lt digit gt lt digit gt lt digit gt 0111213141516171819 Opcode R Reset lt data gt nothing send 00 S Start Begin taking a wind reading lt data gt nothing send 00 I Interval Set the length of the next reading lt data gt number of seconds O Output Send the most recent reading lt data gt nothing send 00 A F AF ik E F C S 7 1 2 Data format for Auto Control lt 0x01 gt lt 0x13 gt GW lt 0x02 gt lt 0x 10 gt 0013 lt reading gt lt 0x04 gt lt reading gt lt sign gt lt digit gt lt digit gt lt digit gt lt digit gt lt sign gt l lt digit gt
9. pair of opposite ultrasonic transducers in both directions From the measurements of tF and tB the wind velocity component in the direction of the two transducers can be calculated by the following equation V D 2 1 tp 116 where D distance between the two transducers tr forward transit time tg backward transit time The main features of USWG are Highly accurate and reliable wind velocity measurement LCD display of average wind velocity Continuous wind velocity reading Two communication interfaces REMOTE and INPUT OUTPUT Automatic interface to FinishLynx photo finish system Remote starting option via cable Powered by 4 x AA size batteries or optional AC adaptor Automatic shut off for power saving Track and field sport wind velocity measurement 2 Overview of the Ultrasonic Wind Gauge Ultrasonic Sensor REMOTE Port INPUT OUTPUT Port Control Buttons Power Switch LCD Display Figure 1 Overview of Ultrasonic Wind Gauge 3 Specifications PARAMETER SPECIFICATION Range Measurement 0 01 m s Resolution Wind velocity Rounded in accordance with IAAF Rule Reading 163 10 Remote port RS232 Interfaces Input Output port RS485 Communication 1 9600 Baud 7 data bits even parity 1 stop Protocol bit Connecter Type 1 9 pin D type female 4 x AA cells rechargeable alkaline or zinc carbon Battery Life Approximately 60 hours continuous operating
10. use with alkaline cells Automatic Power 1 When idle for 2 hours Of 2 When dead battery AC adapter Input 110 120V AC or 220 240V AC Optional Output 9V DC 500mA 285 x 158 x 72 mm 0 66 Kg Table 1 Specification of Ultrasonic Wind Gauge Note that battery life may vary under different applications with different type of batteries 1 Four size AA batteries rechargeable alkaline or zinc carbon are required 2 Specified linear regulated AC adaptor DC 9 volt 500mA provides an optional power source in addition to batteries 3 Mixed use of batteries of different chemical type 1s strictly prohibited 4 USWG will shut off automatically if the system idles for over 2 hours t is suggested that user check up the system status after a long time duration of no operation If the system has been shut off users have to turn off the power switch to reset the system before turn it on again 5 A message of Battery Low will be displayed on the LCD panel when the battery power is low It is recommended to replace the batteries or use AC adaptor if the Battery Low message is displayed 6 When the battery power 1s too low USWG will shut off automatically to prevent from over discharge of the batteries 7 The batteries should be removed before the gauge been put into storage 5 Handling amp Cautions 1 Sensor protection caps must be removed before use When the system 1s not in use the sensor protection
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