BW SENSING BW-AH325 Serias Technical Manual
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BW SENSING BW-AH325 Serias Technical Manual

High cost performance can bus ahrs
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BW-AH325
High cost performance CAN bus AHRS
Technical Manual

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Summary of Contents for BW SENSING BW-AH325 Serias

  • Page 1 Serials BW-AH325 High cost performance CAN bus AHRS Technical Manual...
  • Page 2 BW-AH325 High cost performance CAN bus AHRS Introduction BW-AH325 Attitude and Heading Reference System （AHRS） is a high performance, low cost inertial measurement device that measures the attitude parameters (roll and pitch), angular velocity, acceleration information and heading angle of the dynamic carrier. The attitude and angular velocity deviations are estimated by a 6-state Kalman filter with appropriate gain, which is suitable for dynamic measurement of navigation and positioning.

  • Page 3: Electrical Specifications

    BW-AH325 High cost performance CAN bus AHRS Introduction Electrical Specifications Voltage 9-35V DC Working current 30mA（40mA max） Operating temperature -40~85℃ Storage temperature -55~100℃ Performance Specifications 0.5°（RMS，dynamic）0.1°（RMS，Static） Pitch Accuracy 0.5°（RMS，dynamic）0.1°（RMS，Static） Roll accuracy Attitude parameters Resolution 0.01° Slant Range Pitch ± 90º, Roll ± 180º 0.8°（Pitch<40°）...

  • Page 4: Mechanical Characteristic

    BW-AH325 High cost performance CAN bus AHRS Mechanical Characteristic Connector Metal joint（Line length1.5m) Protection level IP67 Shell material Magnesium alloy oxidation Installation Four M4 screws Package size Size：L60*W59*H29（mm） Bare plate product size Size：L44*W35*H11（mm） Note: ±1mm error for length and width dimensions, please refer to actual size. 孔Φ...

  • Page 5: Product Installation

    BW-AH325 High cost performance CAN bus AHRS Product installation The correct installation method can avoid measurement errors, and the following points should be taken when installing the sensor: First of all, to ensure that the sensor mounting surface is completely close to the measured surface, the measured surface should be as horizontal as possible, and there should be no angle shown in Figure A and Figure C.
  • Page 6 BW-AH325 High cost performance CAN bus AHRS Measurement installation The azimuth reference system has been calibrated at the factory. In places where the influence of the magnetic field environment is small, it is not necessary to perform environmental calibration when using it, and it can be used directly.
  • Page 7 BW-AH325 High cost performance CAN bus AHRS Debugging software Since there is a dedicated CAN receiving device for data communication with CAN interface products, the software is a CAN acquisition device. The software used is not the same, so there is no corresponding software. Let's take the CAN receiver module and product communication adopted by our company as an example: Configure the CAN baud rate and parameters as follows: The receiving and sending areas are set as follows:...
  • Page 8 BW-AH325 High cost performance CAN bus AHRS Protocol The CAN includes 8 bytes, and the data byte is not enough to be followed by 0. Sending the first byte 0x40 indicates a write command, and returning the first byte 0x40 indicates that the write was successful. The ID is the CAN communication node number.
  • Page 9 BW-AH325 High cost performance CAN bus AHRS 4) Query relative\absolute zero: First Third Fourth Second Fifth Sixth Seventh Eighth CAN-ID byte byte byte byte byte byte byte byte send 0x600+0x05 0x40 0x10 0x00 0x0d 0x00 0x00 0x00 0x00 answer 0x580+0x05 0x00 Type 0x40...
  • Page 10 BW-AH325 High cost performance CAN bus AHRS 8) Reading angular velocity Third Fourth Seventh First Second Fifth Sixth Eighth CAN-ID byte byte byte byte byte byte byte byte send 0x00 0x600+0x05 0x40 0x10 0x00 0x00 0x50 0x00 0x00 answer 0x580+0x05 0x50 0x00 Note: The angular velocity of the X axis is (AAAA5000)/10.
  • Page 11 BW-AH325 High cost performance CAN bus AHRS Note: The data of the mode bit output is selected, where 0x00: automatic output attitude angle (default) 0x01: Automatic output acceleration 0x02: Automatic output angular velocity 0x03: Automatic output magnetic field value 0x04: Automatic output attitude angle, acceleration, angular velocity 0x05: automatic output attitude angle, acceleration, angular velocity, magnetic field value 12) Set the magnetic declination...
  • Page 12 BW-AH325 High cost performance CAN bus AHRS Set the extended CAN-ID high 16-bit address Ⅰ Third Fourth Seventh First Second Fifth Eighth Sixth CAN-ID byte byte byte byte byte byte byte byte send 0x600+0x05 0x40 0x10 0x00 0x72 0x00 0x00 answer Note: The extended CAN-ID high 16-bit address cannot be greater than 7FF.

  • Page 13: Ordering Information

    BW-AH325 High cost performance CAN bus AHRS Ordering Information Product number Package condition Product number IP67 package / metal connector BW-AH325-CAN Executive standard Enterprise Quality System Standard: ISO9001:2008 Standard (Certificate ● No.:10114Q16846ROS) CE certification (certificate number: 3854210814) ● ROHS (certificate number: SO81426003) ●...
  • Page 14 BW-AH325 High cost performance CAN bus AHRS Wuxi Bewis Sensing Technology LLC Address: Building 30, No. 58 Xiuxi Road, Binhu District, Wuxi City Hotline: 400-618-0510 Tel: +86 510 85737178-801 Email: sales@bwsensing.com Website: www.bwsensing.com...

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