VBOX Speed Sensors | 5 - 100Hz

Posted in Sensors

Overview

Speed-Sensors VBSS5-20With 5 Hz, 10 Hz, 20 Hz and 100 Hz GPS update rate options available, the speed sensor range suits a variety of budgets and requirements.

Units from 10 Hz update rate are also compatible with the DGPS Base Station for increased positional accuracy.

The 100 Hz Speed Sensor features a GPS engine that tracks the Russian GLONASS range of navigation satellites as well as the normal GPS constellation, using almost twice as many measurements for accurate results and reception in areas of poor satellite visibility. Read more on VBOX GPS accuracy.

If you need to measure speed, position or acceleration, but have no need for internal logging, then the VBOX GPS Speed Sensor range is ideal.

VBOX Speed Sensors are smaller, cheaper and more rugged than the equivalent VBOX range of data loggers, with the same accuracy and quality of signal.

They are designed to integrate directly with your own logging equipment via a CAN or serial interface.

All units are housed in the same small, water resistant package with connections made via a Deutsch motorsport style connector.

Features

Features

The VBOX Speed Sensor Single Antenna has a host of features which makes it a very powerful and flexible item of vehicle testing equipment.

  • High performance GPS receivers
  • GPS/GLONASS receiver in 100 Hz unit
  • CAN Bus output position, velocity, distance, time, heading, height, vertical
    velocity, longitudinal & lateral acceleration, trigger to zero distance, trigger time, trigger speed, radius of turn
  • RS232 Serial Output of NMEA, position velocity and time (except 5 Hz unit)
  • User configurable analogue + digital outputs
  • Virtual Lap Beacon Output
  • Compatible with DGPS Base Station (except 5 Hz unit)
  • Rugged Deutsch ASDD Autosport connector
  • High quality aluminium enclosure
  • IP66 rated: water + dustproof
  • Wide 6.5 V – 30 V operating range

 

Applications

Applications

With a length of only 9-14 cm the unit is easy to mount and transport, making the Speed Sensor perfect for automotive testing, motorsport, marine, and telematics.

  • Brake Testing – Using a brake pedal mounted trigger input, the 100 Hz Speed Sensor will measure braking distance to within ±1.8 cm.
  • Performance Testing – VBOX Speed Sensors are perfect for all variations of performance testing, the accuracy and quick response of the 100 Hz unit gives very repeatable and accurate results.
  • Acceleration Testing

Inputs/Outputs

Inputs / Outputs 

VBSS100SL-inputs-outputs

Inputs

GPS Antenna
3 V Active Antenna (inc) / 5 V for 100 Hz version.

Outputs

  • CAN Bus
    Output Data Rate: 125 Kbit, 250 Kbit, 500 Kbit & 1 Mbit selectable baud rate. Software controlled CAN termination

  • RS232
    NMEA and Racelogic Serial data dependant on unit type

  • Analogue Output
    Either speed, lateral acceleration, longitudinal acceleration, or lap beacon output at 0 to 5 V DC

  • Digital Output
    Speed or lap beacon
    Output Data Rate: Low = 0 V, High = 5 V
    Max frequency 4.4 Khz

Parameters

Parameters

VBOX Speed Sensor Single Antenna measures the following parameters at 5, 10, 20 or 100 samples per second:

  • Time
  • Position
  • Velocity
  • Vertical velocity
  • Heading
  • Height
  • Radius of turn
  • Lateral acceleration
  • Longitudinal acceleration

Specs

Specifications

The specifications below refer to all four VBOX Speed Sensor versions. Whenever values differ from unit to unit, they will be stated from smallest to highest update rate: RLVBSS05| RLVBSS10| RLVBSS20| RLVBSS100.

Absolute Positioning

  • Accuracy: 3 m *
  • Accuracy with SBAS DGPS
    Europe (EGNOS): <1| <1| <1| <1 m*
    USA (WAAS): <1.8| <1.8| <1.8| <1.8 m*
    Asia (MSAS): <1.8| <1.8| <1.8| <1.8 m*
  • Accuracy with RTCM DGPS:
    N/A| 40| 40| 80 cm*
  • Accuracy with Base Station DGPS and GPS upgrade (RLVBUP30): N/A| 20| 20| N/A cm*
  • Update rate: 5| 10| 20| 100 Hz
  • Resolution: 1.8 cm
  • Height accuracy: 10| 6| 6| 6 m *
  • Height accuracy with DGPS: N/A| 2| 2| 2 m *

Velocity

  • Accuracy: 0.1 km/h
    (averaged over 4 samples)
  • Units: km/h or mph
  • Update rate: 5| 10| 20| 100 Hz
  • Maximum velocity: 1000 mph
  • Minimum velocity: 0.1 km/h
  • Resolution: 0.01 km/h
  • Latency: >160| 41.5| 41.5| 8.5 ±1.5 mS

Distance

  • Accuracy: 0.05 % (<50cm per Km)
  • Units: m/ ft
  • Update rate: 5| 10| 20| 100 Hz
  • Resolution: 1 cm

Acceleration

  • Accuracy: 1.00| 0.50| 0.50| 0.50%
  • Maximum: 4| 20| 20| 20G
  • Resolution: 0.01G
  • Update rate: 5| 10| 20| 100 Hz

Lap Timing (OLED display)

  • Resolution: 0.01s
  • Accuracy: 0.01s**

Time Accel/Brake Test (MF display)

  • Resolution: 0.01°
  • Accuracy: 0.2| 0.05| 0.05| 0.01s

Brake Stop Accuracy (trigger activated)

  • Accuracy: N/A| ±20| ±10| ±1.8 cm***

Heading

  • Resolution: 0.01°
  • Accuracy: 0.1°

Environmental and Physical

  • Weight: Approx. 190| 250| 250| 250 g
  • Size: 90 x 65 x 31.85 mm
  • Size (100 Hz unit):140 x 92 x 31.85 mm
  • Operating temperature: -30˚C to +70˚C
  • Storage temperature: -40°C to +85°C

Power

  • Input Voltage Range:
    1st Gen = 6.5 V–30 V DC
    2nd Gen = 7 V–30 V DC
  • Power: 3.7 W Max

Definitions
* 95% Circle of Error Probable (CEP) = 95% of the time the position readings will fall within a circle of the stated radius. 2cm accuracy requires an RTK option and RTK enabled Base Station.
** Not using DGPS and crossing the start/finish line at 100km/h.

*** Based on <50m brake stop distance.

Download or print datasheet here.