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CSS Electronics - Model CANgps -GPS-to-CAN Module with 3D Inertial Sensor and Untethered Dead Reckoning

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The CANmod.gps by CSS Electronics is an advanced GPS-to-CAN module featuring a u-blox NEO-M8U GNSS/IMU chip, designed for seamless integration with any high speed CAN bus system. This device outputs GNSS position and 3D inertial data while delivering continuous positioning through its sensor fusion technology, even in the absence of a GNSS signal, thanks to its Untethered Dead Reckoning capability. Its flexible power requirements (5-26 V DC) simplify installation across various automotive applications. The compact module is configured to broadcast data via configurable CAN bus frames and includes utilities for modifying CAN IDs, bit rate, and data frequency using a simple JSON-based configuration interface. The CANmod.gps is ideal for enhancing automotive telematics, enabling the connection of one or more CANmod.gps devices to a CAN network, and efficiently logging data from both CAN traffic and the module's sensor outputs. This versatility makes it a cost-effective solution for adding GNSS/IMU data into a variety of CAN bus systems.

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This standalone GPS-to-CAN module produces GNSS position and 3D inertial data (via a gyroscope & accelerometer) and outputs it via configurable CAN bus frames.

The module supports 'Untethered Dead Reckoning' - meaning that even if the GNSS signal is lost entirely, the module can deliver continuous positioning through IMU-based estimates (no external inputs required).

You can integrate the module with any CAN bus, e.g. vehicle networks or CAN hardware. As an example, you can use it as a plug & play add-on module for the CANedge.

GENERAL :

  • Functionality : The configurable device produces GNSS/IMU data and outputs it via CAN bus and/or USB
  • Included : CANmod.gps module, u-blox GPS antenna and USB dust cover (mini USB adapter not included)
  • Firmware : Supports free firmware updates via USB for adding features
  • Configuration : Configuration files based on the popular open source JSON schema concept (similar to the CANedge)
  • Software : Free open source editor tool for easy device configuration (offline/online version available)
  • Safety : CE, FCC, IC and RoHS certified (see the Docs for certificates)
  • Warranty : 1-year warranty
  • Support : Free, fast & high quality support
  • Origin : Denmark

SENSOR (GNSS/IMU) :

  • Module : Professional-grade u-blox NEO-M8U (72-channel) sensor with built-in gyroscope and accelerometer
  • GNSS : Supports (combinations of) GPS (USA), Galileo (Europe), BeiDou (China), GLONASS (Russia)
  • Geofences : Supports 0-4 configurable circular geofences (status sent via CAN bus)
  • Sensor Fusion (UDR) : Enhanced position precision via sensor fusion (UDR) of GNSS and 3D IMU (automotives only)
  • Acquisition : Cold starts: 26 s | Aided starts: 3 s | Reacquisition: 1 s
  • Sensitivity : Tracking/Navigation: 160 dBm | Cold starts: 148 dBm | Hot starts: 157 dBm
  • Battery Backup : The module has a battery backup to enable 'aided starts' (3 s) between power cycles
  • Accuracy
    • Position: 2.5 m CEP (Circular Error Probable)
    • Heading: 1 degree (50% at 30 m/s)
    • Velocity: 0.05 m/s (50% at 30 m/s)

DATA PARAMETERS :

  • CAN Signals
  • The module communicates several GNSS/IMU signals (for a full list, see the Docs or DBC file)
  •   : GNSS position: Longitude and latitude information [1 Hz]
  •   : GNSS time: Precise GNSS based epoch timestamp [1 Hz]
  •   : GNSS status: Fix type (NO/UDR/2D/3D/GNSS+UDR) and satellite count [1 Hz]
  •   : GNSS speed: Travel speed in meters/second [1 Hz]
  •   : GNSS altitude: Altitude information in meters [1 Hz]
  •   : GNSS attitude/orientation: Roll, pitch, heading [1 Hz]
  •   : GNSS odometer: Distance traveled (since power on and total) [1 Hz]
  •   : 3D IMU: Gyroscope-based angular rate (X, Y, Z) and accelerometer-based acceleration (X, Y, Z) [100 Hz]
  •   : Geofences: Status of the configured geofences [1 Hz]

CAN BUS :

  • Channels : 1 x CAN channel
  • Modes : The device can either broadcast the data onto the CAN bus - or provide it on-request
  • Standard : ISO 11898: Compliant with CAN (up to 1 Mbit/s)
  • Identifiers : Compliant with CAN specifications 2.0A (11-Bit ID) and 2.0B (29-Bit ID)
  • Termination : Termination can be toggled via switch below DB9 connector
  • Retransmission : Retransmission of frames that have lost arbitration or been disturbed by errors
  • Transceiver Protection : Protection: +/- 25kV HBM ESD, +/-12kV IEC ESD, +/-14 V bus fault, short circuit
  • Common mode input voltage: +/-12V
  • TXD dominant timeout (prevents network blocking in the event of a failure)

CONFIGURATION :

  • Bit Rate : Select between standard bit rates (5K to 1M) or use custom bit-timing
  • Enable/Disable : Individually enable/disable each CAN message
  • Identifier Customization : Individually configure CAN IDs for all messages (11-bit or 29-bit)
  • Push/Poll Mode : Individually configure 'trigger' modes for all messages (push or poll)
  • Frequency : Individually configure prescaling of the default message frequencies to lower rates
  • IMU Correction : Optionally compensate the orientation of the module as part of the IMU configuration

ELECTRICAL :

  • Input Supply
    • +5V to +26V DC via the DB9 connector (power via pin 1 or pin 9)
    • Alternatively power via USB (for updating firmware/config or for streaming data in real-time)
  • Power Consumption : Extremely low (<1W) - no risk of battery drainage
  • Protection :
    • Reverse voltage protection on CAN-bus supply
    • Transient voltage event protection on supply lines

MECHANICAL :

  • Enclosure & Weight : Compact aluminium enclosure: 52.5 x 70.0 x 24.5 mm (L x W x H) excl. antenna, 70 grams
  • Connector : 1 x Standard D-sub 9 (DB9) connector
  • Pin-Out : See the product manual for the DB9 connector pin-outs
  • USB : Standard mini USB connector for config/firmware updates and streaming (USB cable not included)
  • LEDs : Module status via 4 external LEDs: Power, CAN bus, Memory, GNSS
  • Temperature : Operating temperature (parts): -25degC to +70degC
  • IP Rating : IP Rating 40
  • Mounting : Module can be mounted via e.g. rugged double-sided tape, zip-ties or a mounting bracket
  • GPS antenna : u-blox ANN-MS-0-005 (SMA plug, 5 m cable, magnetic base, -40 to +85 degC, 48 x 40 x 13 mm)