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Tips on use of Bluetooth Radios with ADCP’s

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Presentation on theme: "Tips on use of Bluetooth Radios with ADCP’s"— Presentation transcript:

1 Tips on use of Bluetooth Radios with ADCP’s

2 Please note: The use of brand names does not constitute endorsement by the USGS or USGS personnel. Information provided in this presentation is for informational purposes only.

3 Overview Available wireless radio options for data transfer systems.
900 MHz systems WiFi systems Integrated systems Bluetooth systems Bluetooth configuration examples Common issues

4 Radio Modems Allow scientists to make ADCP measurements and collect general environmental data remotely. Increases the versatility of ADCP’s; measurements can now be made off of bridges, cableways, and other methods. Increased safety margin, by keeping scientists “off the water”.

5 One Person ADCP Measurements
Traditionally have been conducted by two people. Two person measurements work well for flood conditions and complicated measurement sites due to safety considerations. Two person measurements may be costly and time consuming. Mechanical meter measurements are typically conducted by one person. Many USGS offices are using various techniques for making one person ADCP measurements. Dollies, Hand Held Golf carts, and tablet PC’s among some of the techniques used.

6 One Person Cart Systems

7 Internal Bluetooth Enabled Tablet PC
Shown is an example of a tablet PC and a Samsung Q1 Ultramobile PC, both with built in Bluetooth/WiFi radio. Note: External Bluetooth may still be desired for extended range.

8 900 MHz/2.4 GHz Spread Spectrum
Reliable, easy to use, proven technology Extended range of 5 miles up to 60 miles Needs serial port on laptop FHSS (frequency hopping spread spectrum) High speed Kbps throughput Throughput limitations when multiplexing RS-232/485 protocol Use volt power supply Cables and batteries increase the amount of equipment at the laptop end May be expensive (~$3,500 - $6,000+ depending on setup)

9 Freewave® Modems Base Modem 12V battery

10 WiFi Used in many commercially available products (PC’s, phones, PDA’s) High speed Kbps throughput FHSS (frequency hopping spread spectrum) RS-232/485 protocol Up to 200 foot range Capable of high throughput with multiple devices Possible data phasing issues Limited testing with environmental data collection systems Slightly more complicated setup Can order Oyster PE Riverboat without the Oyster PE and the wiring will work for a WIFI setup without hull modification Slightly higher cost than Bluetooth (~$700)

11 WiFi Serial Modems gridconnect© Wi232TM Freewave® HT PlusTM
Lantronix© WiBox®

12 More information on WiFi
Iowa City Field Office Wibox configuration Wiring diagram for Impulse cable Photographs Setup Instructions Contacts Jason McVay Scott Strader

13 Other Wireless options
Remote PC to land based laptop or PDA. Examples include the Ocean Science Oyster PC and other small computers. Sontek RiverSurveyor

14 Bluetooth Used in many commercially available products (PC’s, phones, PDA’s, etc.) May be used with DB9 (serial connector), USB, or internal Bluetooth device 2.4 GHz Spread Spectrum radio FHSS (frequency hopping spread spectrum) Low cost, low power consumption Class meters, Class meters RS-232/485 protocol High speed Kbps throughput Uses 5-12 volt power supply Less hardware complexity (No long wires and large batteries to carry around) About $260 pair

15 Lots of Bluetooth Radios Available!
gridconnect© Blue Plug adaptor gridconnect© Blue Port adaptor gridconnect© Firefly adaptor Stevens® SharkTM Bluetooth adaptor

16 Parani-SDTM Bluetooth Modems
Most commonly used and best tested in the USGS (also known as Promi) Should soon be stocked by the HIF

17 Integrated Radio Systems
StreamPro uses Bluetooth to connect to PDA StreamPro measurements now possible with Winriver II Sontek Offers integrated Spread Spectrum or Bluetooth radio with their ADP’s.

18 Integrated Radio Systems
Sontek© RiverSurveyorTM Teledyne RD-Instruments© StreamProTM

19 Antennas Proper antenna must be used for the type of radio system or decrease in range or damage to radio may occur. Dual band antennas operate at 900MHz or 2.4 GHz. Use of higher gain antennas will result in increased range. Most radios are using SMC or N type connectors (watch for left hand threaded connectors).

20 Parani-SDTM Bluetooth Modems
Published range for Parani-SD 100: Stub Antenna to Stub Antenna (120 meters) Stub Antenna to Dipole Antenna (150 meters) Dipole Antenna to Dipole Antenna (200 meters) Patch antenna to Dipole Antenna (400 meters) Patch antenna to Patch Antenna (1200 meters) Our testing has shown no range issues with a maximum tested distance of approximately 500 feet. Recommend using dipole Antennas (pictured)

21 Parani-SD 100 Setup Setup Hardware (Most complicated part tends to be using correct wiring and connectors) Add Bluetooth devices on computer and assign com ports; alternatively, configure a Parani to automatically connect to your instrument. Configure WRII (or other software) to work with the assigned comport and baud rate.

22 Riverboat Pig Tails data cable
DB-9 (Parani) plug – null modem and gender changer not required. Riverboat data harness connector Parani antenna connector antenna cable Riverboat antenna connector

23 Parani Power Setup 6V NimH battery Parani SD 100
Alternatively you can wire the #9 pin on the Parani directly to the 12V battery in the River Boat.

24 Modem fits inside watertight box
Parani Uses existing Riverboat antenna Parani uses existing data cable from ADCP

25 HIF Developing Enclosure
Drop in radio replacement for most common OceanScience Riverboat wiring (with adapters for less common connectors) Can house a variety of small radios Still only a prototype

26 Parani with StreamPros
Can be configured and paired with a specific StreamPro once, then user only plugs into serial port and turn on! Step-by-step instructions available on the Hydroacoustics forum (hydroacoustics.usgs.gov/forum)

27 Laptop (ground) Radio Power is supplied via USB cable (included).
Shown is example of standard Parani to Parani setup on a traditional laptop. Notice the lack of bulky 12V batteries and long cables.

28 Internal Bluetooth Enabled Tablet PC
Shown is an example of a tablet PC with built in Bluetooth/WiFi radio.

29 Most Common Problems Power Disconnected cables Serial Port Issues
Bad or low battery Blown Fuse Disconnected cables Serial Port Issues Comm Port Baud Rates FIFO Buffers Flow Control

30 Verify All Connections
Power on and connections snug Check battery voltage > 12V - With battery under load (ON) Look for corroded or broken cables and connector

31 All Serial Ports are not Equal
Many issues are caused by incompatible USB to RS-232 or PCMCIA to RS-232 converters Some models work better than others Some built-in serial ports have issues HIF stocks a USB to serial adapter Two Serial Ports Cheap ($49) Has been reliable with hydroacoustic equipment Stock #

32 FIFO Buffers Should Be ON
Need PR account to change Accessed under Control Panel, System, Device Manager, Port Properties, Advanced Vaisala 555 data logger requires OFF

33 General Wireless Settings
Baud rate same as ADCP Flow Control None (off) Parity None StopBits 1 Configuration screen for Parani Bluetooth radios

34 Other Information Built in Bluetooth/WiFi radios may have limited range Spread Spectrum Radios (Freewave’s) offer greater range Bluetooth radios can be setup to send multiple instrument data (ADCP/GPS/Depth sounder) by using a Bluetooth enabled laptop or a Bluetooth PCMIA card. Bluetooth radios can be used to transfer data between many types of hydrologic instrumentation; it’s basically a wireless serial cable. (note: gender changer and null modem may be required on the instrument side and use of gender changer included with Parani radios has caused issues)

35 Other Information (cont’d)
When using multiple radios simultaneously there is a potential for computer conflict assigning comports. When using multiple radios simultaneously there may be some data phasing issues. Data phasing issues should not be present when using a remote computer, i.e. Oyster PE.

36 Questions?


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