Related Manuals for Racelogic VB20SL
Summary of Contents for Racelogic VB20SL
- Page 1 VB20SL User Guide VB20SL 20Hz GPS Data Logger With Slip Angle User Guide Page 1 of 30...
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Page 2: Table Of Contents
SMOOTHING AND FILTERING ........................................................16 DIGITAL AND ANALOGUE OUTPUTS ......................................................17 DIGITAL INPUTS ..............................................................17 CAN / RS232 PORTS / USB ..........................................................18 VB20SL ‘.VBO’ FILE FORMAT ......................................................... 21 VBOXTOOLS SOFTWARE ..........................................................22 UPGRADING THE FIRMWARE ........................................................23 SPECIFICATION ..............................................................24 CONNECTOR ASSIGNMENTS .......................................................... -
Page 3: Introduction
Introduction The VB20SL is a multi-purpose non-contact speed sensor. Using an advanced dual antenna GPS engine, the VB20SL can calculate not only the speed and direction of travel of the object upon which it is placed, but also an accurate Slip angle and Pitch or Roll angle. This data is then logged to an inserted SD card, available on a configurable CAN output and present on a USB or serial output for direct monitoring or data processing by a connected PC running VBOXTools software. -
Page 4: Standard Inventory
VB20SL User Guide Standard Inventory Description Racelogic Part # VB20SL VB20SL Mains Charger RLVBACS020 Cigar Lighter adaptor RLVBCAB10 USB Lead RLCAB042 2GB SD Card RLACS083 GPS Ground Plane Antenna RLVBACS103 VBOX Serial PC Cable RLCAB001 CD ROM containing VBOX software... -
Page 5: Getting Started
VB20SL User Guide Getting Started Required equipment (All supplied as standard unless specified) VB20SL Fully charged battery pack or Cigar lighter 12v adapter lead GPS Antenna Blank SD card USB/RS232 Cable VBOX Software CD ... - Page 6 VBOX 9. With the power applied, the Display screen will illuminate. The VB20SL will start searching for satellites. The ST led will indicate the number of satellites currently in lock. For best results ensure the VBOX has acquired a lock on 5 or more satellites, essential for quality signal reception. When using the VBOX for the first time or when using the VBOX after a long period of time, allow the VBOX to sit for between 5 and 10 minutes to re-collect data needed to track satellites.
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Page 7: Antenna Types And Placement
VB20SL User Guide Antenna Types and Placement Whilst installation and use of the VB20SL is intended to be fast and simple, careful attention must be paid to placement of the two antennas. Note: It is essential that the separation of the two antennas is exactly the same as the value set in the unit’s configuration screen. - Page 8 Racelogic. GPS Antenna The GPS Antennas supplied with the VB20SL are 3.5v active antennas. For the best possible signal quality, it is important to maintain a clean connection between the antennas and the VBOX. Before fixing the antennas to the VBOX, ensure that there are no dust particles in either connector.
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Page 9: Display Screen
Using the VB20SL with one GPS antenna The VB20SL can be used like a traditional VBOX. Only Antenna A is needed if the VB20SL is to be used like a traditional VBOX without the requirement to measure Slip, Pitch, YAW rate and Lateral Acceleration channels. -
Page 10: Front Panel Controls
VB20SL User Guide Front Panel Controls The VB20SL can be configured using the front panel buttons, which enables configuration without the need for a computer. ’■’ From the main screen, press the button to enter the configuration screen. ◄’ ►’... - Page 11 VB20SL User Guide Setup Antennas Menu (Pitch Antennas) SEPARATION LEVEL SWAP SLIP OFFSET PITCH OFFSET BACK ANTENNAS Set to ‘ON’ to allow the ’■’ ‘◄’ ’■’ ‘◄’ ’■’ ’■’ ’■’ Press and then use the Press and then use the...
- Page 12 VB20SL User Guide OUTPUTS: Digital Setup Menu (Channel 1 and 2) OUTPUT PULSES PER MAX VELOCITY MAX VALUE MAX FREQUENCY TEST EXIT METER Only available when output Only available when output Only available when output Only available when output is set to Velocity...
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Page 13: Slip Angle Offset
Slip Angle Offset When using the VB20SL for measurement of Slip Angle, Pitch / Roll Angle, True Heading, Lateral Velocity or Yaw Rate, it is essential that the Slip Angle offset is determined before conducting tests. This then compensates for any misalignment in the placement of the two antennas. -
Page 14: Pitch/Roll Angle Offset
The CAN Baud rate is 500Kbit/s, Motorola 11 bit – Standard Frame, The DLC = 8 The VB20SL will respond on CAN to indicate stages of the Slip offset process and also indicate completion or failure. Please see the table below:... -
Page 15: Level
When logging data to an SD Card the OLED display will show the name of the current file at the bottom of the display. It is important not to remove the SD Card while the VB20SL is logging. If the card is removed while the VBOX is writing data to it, there is a risk that the data file may be corrupted resulting in loss of data. -
Page 16: Smoothing And Filtering
Smoothing and Filtering Velocity: The VB20Sl has three smoothing settings (Dynamic Modes) for velocity, High Dynamics, Normal and Low Dynamics. High dynamics has the least amount of smoothing and must be used for high dynamic tests where Time or Distance measurements are critical to the test, such as Brake stop and acceleration tests. -
Page 17: Digital And Analogue Outputs
VB20SL User Guide Digital and Analogue Outputs The digital outputs on connectors OUT1 and OUT2 are a frequency/pulse output corresponding to velocity. The pulse per meter range is adjustable in software or via the front panel controls. The analogue outputs on connectors OUT1 and OUT2 output 0-5volt DC signal corresponding to velocity. The velocity per volts range is adjustable in software or via the front panel controls. -
Page 18: Digital Inputs
Digital Inputs The DIGITAL I/O socket contains the two digital inputs for the VB20SL. Digital input 1 is also referred to as the Brake trigger input. This input is connected to an internal timer capture module that is able to record precisely an event time for use in brake distance calculation. This period of time is called the trigger event time, and is logged as the value in milliseconds between the trigger event and the last GPS sample. -
Page 19: Can / Rs232 Ports / Usb
CAN / RS232 Ports / USB The VB20SL is equipped with a CAN Bus interface, a RS232 serial port and an USB port. The RS232 port or USB is used for all communication between the VBOX and laptop PC. The USB or RS232 ports are able to transmit live data from the VBOX to the PC for viewing and performing real-time tests. - Page 20 After a short period of time a window will ask you if you wish to reboot your computer, select ‘NO’ Now disconnect the power from the VB20SL and then reconnect the power, your computer will now recognise the Slip angle sensor. When you run the VBOXTools software it will recognise the USB...
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Page 21: Vb20Sl '.Vbo' File Format
VB20SL User Guide VB20SL ‘.VBO’ file format The VB20SL data files are saved in standard space de-limited text format. This allows the data to easily be imported into third party applications such as word processors or spreadsheets. The files each contain a header section before the main data that describes the channel content and information about the VB20SL such as serial number and firmware version. -
Page 22: Vboxtools Software
VB20SL User Guide VBOXTools Software The VBOXTools software is used for configuration of the VB20SL and also for analysis of the VBO data files. For further information on the VBOXTools software refer to the VBOXTools Software manual supplied with VB20SL. -
Page 23: Upgrading The Firmware
Upgrading the Firmware Occasionally Racelogic releases new versions of firmware code for VBOX products, this maybe to fix bugs or to add new features. New firmware for the VB20SL is loaded into the unit using a computer and the supplied USB cable. -
Page 24: Specification
VB20SL User Guide Specification Velocity Distance Accuracy 0.1 Km/h (averaged over 4 Accuracy 0.05% (<50cm per Km) samples) Units Km/h or Mph Units Metres / Feet Update rate 20 Hz Update rate 20Hz Maximum velocity 1000 Mph Resolution Minimum velocity 0.1 Km/h... - Page 25 VB20SL User Guide Outputs CAN Bus Format: Motorola Bit rate 125Kbits, 250Kbits ,500Kbits & 1Mbit selectable baud rate Identifier type Standard 11bit or extended 2.0A Data available Satellites in View, Latitude, Longitude, Velocity, Heading, Altitude, Vertical velocity, Distance, Longitudinal acceleration & lateral...
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Page 26: Connector Assignments
VB20SL User Guide Connector Assignments Connector 1 POWER (Dedicated 4.5V to 36V DC Power Connector) Function Power + Ground Chassis Ground Connector 2 / 3 – OUT 1 / OUT 2 (One Analogue and One Digital Output Each) Function Analogue Out 1 / 2... - Page 27 VB20SL User Guide Connector 5 – CAN (First CAN Bus Connector, Serial Connection to GPS Engine) Function RS232 Tx GPS (Tx Data from GPS engine) RS232 Rx GPS (Rx Data to GPS engine) CAN High (Also direct connection to Connector 6 CAN High)
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Page 28: Can Bus Data Format
VB20SL User Guide CAN Bus Data Format Format Motorola Data Bytes Update Rate (3) Position – Latitude DDMM.MMMMM 0x301 50ms (1) Sats in view (2) Time since midnight UTC (4) Position – Longitude DDMMM.MMMMM 0x302 50ms (5) Velocity. (Knots) (6) Heading (Degrees) -
Page 29: Module Dimensions
Fuse Reset Button The VB20SL contains a fuse to protect it from excessive currents. If the unit is accidentally subjected to large currents and the fuse has become tripped, it can be reset by pressing the button marked ‘Fuse Reset’ all the way into the unit with a long, thin implement. -
Page 30: Contact Information
VB20SL User Guide Contact Information Racelogic Ltd Unit 10 Swan Business Centre Osier Way Buckingham MK18 1TB Tel: +44 (0) 1280 823803 Fax: +44 (0) 1280 823595 Email: support@racelogic.co.uk Web: www.racelogic.co.uk Revision Date Description Author 01/12/06 First release 11/12/06 Update to CAN format table...