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 systemsWiFi systemsIntegrated systemsBluetooth systemsBluetooth configuration examplesCommon issues
4 Radio ModemsAllow 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.
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 technologyExtended range of 5 miles up to 60 milesNeeds serial port on laptopFHSS (frequency hopping spread spectrum)High speed Kbps throughputThroughput limitations when multiplexingRS-232/485 protocolUse volt power supplyCables and batteries increase the amount of equipment at the laptop endMay be expensive (~$3,500 - $6,000+ depending on setup)
10 WiFiUsed in many commercially available products (PC’s, phones, PDA’s)High speed Kbps throughputFHSS (frequency hopping spread spectrum)RS-232/485 protocolUp to 200 foot rangeCapable of high throughput with multiple devicesPossible data phasing issuesLimited testing with environmental data collection systemsSlightly more complicated setupCan order Oyster PE Riverboat without the Oyster PE and the wiring will work for a WIFI setup without hull modificationSlightly higher cost than Bluetooth (~$700)
12 More information on WiFi Iowa City Field OfficeWibox configurationWiring diagram for Impulse cablePhotographsSetup InstructionsContactsJason McVayScott 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 BluetoothUsed in many commercially available products (PC’s, phones, PDA’s, etc.)May be used with DB9 (serial connector), USB, or internal Bluetooth device2.4 GHz Spread Spectrum radioFHSS (frequency hopping spread spectrum)Low cost, low power consumptionClass meters, Class metersRS-232/485 protocolHigh speed Kbps throughputUses 5-12 volt power supplyLess hardware complexity (No long wires and large batteries to carry around)About $260 pair
19 AntennasProper 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 SetupSetup 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 connectorParani antenna connectorantenna cableRiverboat 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 antennaParani 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 radiosStill 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 batteryBlown FuseDisconnected cablesSerial Port IssuesComm PortBaud RatesFIFO BuffersFlow Control
30 Verify All Connections Power on and connections snugCheck 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 convertersSome models work better than othersSome built-in serial ports have issuesHIF stocks a USB to serial adapterTwo Serial PortsCheap ($49)Has been reliable with hydroacoustic equipmentStock #
32 FIFO Buffers Should Be ON Need PR account to changeAccessed under Control Panel, System, Device Manager, Port Properties, AdvancedVaisala 555 data logger requires OFF
33 General Wireless Settings Baud rate same as ADCPFlow ControlNone (off)ParityNoneStopBits1Configuration screen for Parani Bluetooth radios
34 Other InformationBuilt in Bluetooth/WiFi radios may have limited rangeSpread Spectrum Radios (Freewave’s) offer greater rangeBluetooth 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.