This top-of-the-range data logger combines all the advantages of a twin antenna GPS setup with GLONASS satellite tracking and can be used in any number of vehicle tests where positional accuracy and repeatability are of the utmost importance.
2 cm Positional Accuracy
For tests where positional accuracy is of key importance, like lane departure testing, distance to a fixed object, or precise mapping, the VBOX 3i RTK offers industry-leading 2 cm positional accuracy, in real time, at 100 Hz!
VBOX 3i RTK is the key data acquisition unit of the RACELOGIC ADAS Test Systems for measuring vehicle separation, time to collision, position within a lane, and more to 2 cm precision.
VBOX 3i Dual Antenna RTK comes with a VBOX Manager, a display enabling you to change the dynamic modes and filter settings, set up slip angle data and define antenna locations.
The VBOX 3i Dual Antenna RTK is our top of the range GPS data logger:
Centimetre-level position accuracy can be used for a number of standard industry tests. For example:
- Lane Departure Warning - 2 cm accuracy combined with synchronised video
- Adaptive Cruise Control - 2 cm vehicle to vehicle accuracy
- AEB and Collision Avoidance Systems - Vehicle to point, vehicle to vehicle
- Blind Spot Detection - Calibrated video overlay
- Rear Cross Traffic Detection Testing
- Track Mapping and Route Profiling - Height is also improved to within ±2 cm
- Driving Line Analysis - Precise track position allows the ultimate analysis
The VBOX Test Suite software analysis package allows for a detailed examination of VBOX data, along with an intuitive interface that is accessible for all users from engineer to test driver.
Dedicated test plugins like ADAS include all three types of Euro NCAP tests: car-to-car rear stationary, car-to-car rear moving, and car-to-car rear braking (CCRs, CCRm, CCRb) as well as Park-Assist.
The NCAP protocol’s test parameters for AEB are hard-coded into the VBOX Test Suite software, and all the relevant channels are automatically created and logged during a test: subject and target vehicle speeds, relative distances between them, lateral deviation, yaw and steering wheel velocity.
This level of automation results in a significant reduction in post-processing work as well as the time already saved on track.
Inputs / Outputs
- 100 Hz GPS / GLONASS Engine
VB3iSLR features a powerful GPS engine embracing two antennas and capable of providing 100 Hz signal up date rate for all GPS/GLONASS parameters (i.e. velocity, head ing & position). Velocity and heading are calculated via Doppler Shift in the GPS carrier signal, providing you with unparalleled data accuracy.
- 2x GPS/GLONASS Antennas
All standard parameters like time, speed, distance, and position are measured at the primary antenna. The secondary antenna enables logging of additional channels like slip angle, pitch or roll angle (depending on antenna orientation).
- Base Station Radio Link
Can be used in conjunction with an RTK differential Base Station to obtain centimetre-level positional accuracy.
- 2x CAN Bus
Two CAN Bus interfaces are available. The first CAN Bus connections allows data to be logged from RACELOGIC modules such as TC8 and FIM03. The second CAN Bus interface allows you to log up to 16 CAN signals from a different CAN source (e.g. Vehicle CAN Bus, laser height sensors, or steering wheel sensor). VBOX Test Suite analyisis software is able to load signal data from an industry standard CAN database file (.DBC).
- Brake Trigger
By using a physical pressure switch on the brake pedal, a precise 'start of braking event' can be captured. The brake/event trigger input is oversampled to 25nS for high distance accuracy.
- Log Switch
A start/stop logging switch allows users to manually choose when they wish to record data.
- 4x Analogue Inputs
Each of the four analogue input channels have a dedicated analogue converter. Data is recorded from each channel simultaneously to avoid latency between analogue channel data. The name, scale and offset of each analogue input channel can be adjusted using VBOX Test Suite software to allow sensor calibration and therefore logging of data in standard SI units. The analogue input connector also provides two power outputs that may be used for driving sensors. These are in the form of a 5v DC isolated supply and an output equal to the VBOX power supply voltage. Log rates can be set to either 100 Hz or 500 Hz.
- Voice Tagging
VBOX 3i can record a GPS synchronised WAV audio tag up to 30 seconds long to a time accuracy of 0.5 sec. The recorded WAV file is then logged to the CF card.
- Power Supply
VBOX 3i can accept a supply voltage between 7 to 30 V DC. Low current consumption results in extended battery life.
- CAN Bus
One of the two VBOX CAN ports can be used to output VBOX GPS parameters plus any 12 channels from connected input modules or internal AD channels. The baud rate and CAN id's for these outputs are user configurable.
The RS232 connector is used for VBOX configuration and output of real-time GPS data. Provides the facility to connect to a radio telemetry system to offer PC monitoring of test data.
VBOX 3i USB connector can be used for VBOX configuration and to output real-time data at 100 Hz to a PC.
VBOX 3i comes equipped with an internal Bluetooth Radio allowing remote configuration and remote output of real-time GPS data to any Bluetooth capable PC or Data logger. The Bluetooth connection is capable of sending data at the full 100 Hz rate.
- 2x Digital Outputs
The first digital output is assigned to 'Speed/Distance' with adjustable 'Pulses per Meter' setting, while the second output is a level switch output enabling users to select any one of the logged channels and assign it a threshold value, e.g. output high (5 V) when speed greater than 20 km/h.
- 2x Analogue Outputs
Both 16bit analogue outputs can be configured to output velocity (or other GPS parameters) for use by additional data logging equipment. The voltage output range is from 0 to 5 V DC with a resolution of 76 μV per bit.
- CF Card
Data is logged in a space-delimited text format. Recording time dependent on flash card capacity, log frequency, number of channels and logging conditions. Approximately 29 MB per hour used when logging GPS data at 100 Hz; approx. 182 MB per hour total logging capacity. Please note that only compact flash cards of up to 32 GB are supported.
VB3iSLR measures the following parameters at 100 samples per second:
Many other external parameters can be logged either:
All specifications refer to VBOX 3i Dual Antenna RTK (RLVB3iSLR - IMU04 ready).
||Absolute Positioning (RMS)
|Accel/Brake Test Time
(Multifunction Display / VBOX Test Suite)
(OLED Display / VBOX Test Suite)
|Brake Stop Accuracy
|Slip Angle Accuracy
||Pitch/Roll Angle Accuracy
|Environmental and Physical
* Specifications will vary depending on the number of satellites used, obstructions, satellite geometry (PDOP), multipath effects, and atmospheric conditions. For maximum system accuracy, always follow best practices for GNSS data collection.
** Not using DGPS and crossing the start/finish line at 100km/h.
*** Approximately 29 MB per hour used when logging GPS data at 100 Hz; Approx. 182 MB per hour total logging capacity.
Download or print datasheet here.