Basecam Electronics GPS IMU V.1.0 Reference
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Basecam Electronics GPS IMU V.1.0 Reference

Gnss-aided ahrs/imu module
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Features
• Integrated GNSS-antenna for a compact size
• Full set of navigation sensors: 3-axis
gyroscope, 3-axis accelerometer, 3-axis
magnetometer, barometer (altimeter), GNSS
receiver (concurrent Galileo, GLONASS,
GPS / QZSS)
• Powerful MCU running UKF for a sensor
fusion at high rates
• Thermal stabilization helps to keep high
precision with the change of environmental
temperatures
• Interfaces: UART, USB, CAN*, I2C*
• Onboard SD card for a high-rate data
logging with the actual date-time
information and flexible set of data to log
• Backup battery for a GNSS "warm start"
mode and real-time clock
• Open serial API protocol allows using this
sensor in various applications
• Compatible with all versions of the
SimpleBGC32 controllers**
• Functionality will be constantly improved
by the firmware updates
• Cost-effective solution compared to other
GNSS-enabled solutions on the market
* CAN and I2C interfaces will be implemented in future
releases of the firmware
** For full support of all functions of the Basecam GPS IMU, it's
required to update the main controller's firmware to the
version 2.68b7 and above.
© Basecamelectronics® 2019
Document revision: 1.0.58 (20. May. 2019)
Hardware version: 1.1
Firmware version: 1.0
Basecam GPS IMU V.1.0
GNSS-aided AHRS/IMU module
Overview
The Basecam GPS IMU is an GNSS-aided
compact AHRS/IMU module developed by
Basecamelectronics company to work as an
external IMU sensor* with all versions of
SimpleBGC32 controllers. It has much better
precision compared to the internal IMU sensor,
that allows improving precision of stabilization
in demanding applications, where the regular
IMU sensor does not work reliably.
GPS IMU connects to any free UART port of the
main controller and provides precise attitude
and heading information, that can be used as a
reference to correct the internal IMU sensor,
solving its common problems: gyroscope drift,
an affection of linear accelerations, drift caused
by the changes in environmental temperature.
*Note that currently GPS IMU module does not replace the
regular IMU sensor, though this functionality may be
implemented in future.
www.basecamelectronics.com

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Summary of Contents for Basecam Electronics GPS IMU V.1.0

  • Page 1 Basecam GPS IMU V.1.0 GNSS-aided AHRS/IMU module Features • Integrated GNSS-antenna for a compact size • Full set of navigation sensors: 3-axis gyroscope, 3-axis accelerometer, 3-axis magnetometer, barometer (altimeter), GNSS receiver (concurrent Galileo, GLONASS, GPS / QZSS) • Powerful MCU running UKF for a sensor fusion at high rates •...

  • Page 2: Specifications

    Basecam GPS IMU V.1.0 GNSS-aided AHRS/IMU module Specifications Mechanical Absolute maximum ratings Size of the enclosure 71×57×20 mm Working temperature -40..+85 °C Weight 45 g Acceleration 1000G for 1 ms Mounting holes 3 mm × 4 ESD rating HBM: Class 2, 2000 V...

  • Page 3: Installation

    Basecam GPS IMU V.1.0 GNSS-aided AHRS/IMU module Installation When choosing a position for the GPS IMU module, take into account the following conditions that are mandatory for a normal work of all sensors: Magnetometer: as a magnetic field of the earth is very weak, even relatively small external magnetic fields can distort the measurements.
  • Page 4 Basecam GPS IMU V.1.0 GNSS-aided AHRS/IMU module selected sensors at any time if for some reasons factory calibration becomes obsolete. IMPORTANT: wait at least 1 minute after powering ON the device, to let it warm up to working temperature! Otherwise, calibrations will be not precise.

  • Page 5: Led Status Indication

    Basecam GPS IMU V.1.0 GNSS-aided AHRS/IMU module When all 6 positions are passed, system computes calibration values and emits a series of short pulses by the green LED. LED status indication The multicolor LED signals the basic modes of operation by color: Green —...

  • Page 6: Data Logging

    Basecam GPS IMU V.1.0 GNSS-aided AHRS/IMU module 0: portable 2: stationary 3: pedestrian 4: automotive 5: sea 6: airborne with <1g acceleration 7: airborne with <2g acceleration 8: airborne with <4g acceleration Remarks: * If parameter is enabled, module sends CMD_AHRS_HELPER or CMD_HELPER_DATA messages to the SimpleBGC32 gimbal controller.

  • Page 7: Firmware Update Instructions

    Basecam GPS IMU V.1.0 GNSS-aided AHRS/IMU module data. To send data, use CMD_USER_DATA_LOG message. To define which data is enabled for logging in configuration, use CMD_GET_USER_CONF_LOG message. The following parameters defines how to log external data: LOG_USER_CH<pipe_idx>_NAME=<name_of_pipe> • ◦ <pipe_idx> starts from 0 ◦...
  • Page 8 Basecam GPS IMU V.1.0 GNSS-aided AHRS/IMU module 1. Power off the device. 2. Copy the firmware file named "FWUPDATE.BIN" to the root directory of the SD card and install card into the device. 3. Turn on the device power or connect by USB cable to PC 4.
  • Page 9 Basecam GPS IMU V.1.0 GNSS-aided AHRS/IMU module Dimensions and pinout Сoor di n at e r oot an d di r ec t ion of ax es R4,5 R4,5 10,9 DIMENTIONS IN MILLIMETERS © Basecamelectronics® 2019 www.basecamelectronics.com...

  • Page 10: Mic R Ousb

    Basecam GPS IMU V.1.0 GNSS-aided AHRS/IMU module Mic r oUSB Ser vi c e bu t t on I2С U ART CAN_ H CAN_ L © Basecamelectronics® 2019 www.basecamelectronics.com...

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