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Bewis Sensing Technology LLC    www.bwsensing.com    Tel

+86 18921292620 

BW-IMU730 
Small-size three-axis fiber optic 
Gyroscope inertial measurement unit 

 

 

 

  Unmanned boats and underwater vehicles 

  Special robots 

  Marine engineering surveying and 

mapping

 

Feature 

Application 

BW-IMU730  is  a  small-size  high-precision  three-axis  fiber  optic  gyroscope  inertial 

measurement unit developed and produced by Bewis Sensing. It can output acceleration and 

angular velocity information without relying on external signal input, which can be calculated 

through user-developed algorithms The azimuth angle, roll angle, pitch angle, Euler angle, and 

quaternion information of the measured carrier are suitable for inertial attitude measurement 

under various states of motion, vibration or static. 

BW-IMU730  has  a  built-in  three-axis  fiber  optic  gyroscope  and  a  highly  reliable  MEMS 

accelerometer.  The  original  data  deviation  is  estimated  by  the  6-state  Kalman  filter  with 

appropriate  gain,  and  the  measurement  accuracy  is  guaranteed  by  the  algorithm,  and  the 

nonlinear  compensation,  quadrature  compensation,  Temperature  compensation  and  drift 

compensation, etc.,  are used to greatly eliminate errors and improve product accuracy. This 

product has a digital interface, which can be easily integrated into the system. 

  Unmanned vehicles and autonomous 

Driving 

  Attitude measurement and maintenance 

  Unmanned aircraft

 

 

Introduction 

  Output mode

RS422 

  Working temperature

-40

~+60 

 

  Weight(without package)

:≤

450g 

  Small size

L70

×

W65

×

H51mm 

  Gyro bias stability

:≤

0.5

°

/h 

  Accelerometer bias stability

0.5mg 

  Gyro scale factor

:≤

50ppm 

  Accelerometer range

:±

20g 

Summary of Contents for BW-IMU730 Series

Page 1: ...Technical Manual BW IMU730 Series Small size three axis fiber optic gyroscope inertial measurement unit V3 0 ...

Page 2: ...ttitude measurement under various states of motion vibration or static BW IMU730 has a built in three axis fiber optic gyroscope and a highly reliable MEMS accelerometer The original data deviation is estimated by the 6 state Kalman filter with appropriate gain and the measurement accuracy is guaranteed by the algorithm and the nonlinear compensation quadrature compensation Temperature compensatio...

Page 3: ...1σ Scale factor repeatability 100ppm 1σ Bandwidth 400Hz Measurement range 800 800 s Random walk coefficient 0 05 h Accelerometer Range X Y Z 30 g Bias stability at room temperature 0 5mg 10s 1σ Bias stability at full temperature 1mg 10s 1σ Scale factor nonlinearity 300ppm 1σ Scale factor repeatability 300ppm 1σ Other index Dimension 70 65 51mm Start up time 1min Weight 450g Power supply 9 30V DC P...

Page 4: ...ee axis fiber optic Gyroscope inertial measurement unit Mechanical properties Package product size Product size L70 W65 H51 mm Connector RS422 communication J63A 242 015 261 TH Protection level IP63 IP67 customized Shell material Magnesium aluminum alloy anodizing Installation Four M4 screws ...

Page 5: ...shown in Figure A and Figure C The correct installation method is shown in Figure B and Figure D Secondly the bottom line of the sensor and the axis of the measured object cannot have an angle as shown in Figure E When installing keep the bottom line of the sensor parallel or orthogonal to the axis of rotation of the measured object This product can be installed horizontally or vertically vertical...

Page 6: ...for physical damage such as collisions 2 Instructions on how to use the product a The product is installed on the carrier and the cable is correctly connected as required b Perform data connection in accordance with the communication protocol 3 Matters needing attention a The product should not be frequently switched on and off during use so as not to damage the performance of the gyro and reduce ...

Page 7: ...it low in the front high in the back 1 16 signed int16 30 31 Y axis gyro temperature 16bit low in the front high in the back 1 16 signed int16 32 33 Z axis gyro temperature 16bit low in the front high in the back 1 16 signed int16 34 35 X axis accelerometer temperature 16bit low in the front high in the back 1 16 signed int16 36 37 Y axis accelerometer temperature 16bit low in the front high in th...

Page 8: ...BW IMU730 Small size three axis fiber optic Gyroscope inertial measurement unit Executive standard National Standard for Static Calibration Specifications for Dual Axis Inclination Sensors Draft GB T 191 SJ 20873 2003 General Specification for Inclinometers and Levels ...

Page 9: ...y LLC Add Building 30 NO 58 Xiuxi Road Binhu District Wuxi City Jiangsu Province China Tel 86 18921292620 Mail sales bwsensing com Web www bwsensing com BW IMU730 Series Small size three axis fiber optic inertial measurement unit ...

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