BMI055 Sensors, Transducers

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Motion Sensors - IMUs (Inertial Measurement Units) are key components in sensor systems used in various fields. The BMI055 is a small, low power, high performance 6-axis inertial measurement unit (IMU) which includes a 3-axis accelerometer, 3-axis gyroscope, and aspects of a digital motion processor (DMP). This makes BMI055 a powerful and versatile IMU for motion-sensing applications in the market.

BMI055 Application Field

BMI055 IMU can be used in a variety of fields. The main applications are in the areas of consumer electronics, optical navigation, robotics, and machine control. It is used in consumer electronics for mouse and track pad, touch screen pen applications, game controllers, and systems for balancing the flying drone. In optical navigation, the accelerometer of the BMI055 IMU detects relative motion between the user and the device and integrates it into a navigation system. Additionally, the BMI055 can accurately measure the angle of inclination of a rotating object due to its high resolution half-angle measurement capability. Furthermore, with the DMP (Digital Motion Processor), the BMI055 supports motion gesture recognition for robot control and user-friendly HMI (Human Machine Interface). Finally, small and embedded systems for 6-axis angles measurement (3-dimensional position, velocity, acceleration) and attitude control of UAVs (unmanned air vehicles) can also benefit from the BMI055.

BMI055 Working Principle

The BMI055 IMU operates by detecting and measuring acceleration (linear/gravity), angular rate (degrees/s) and/or magnetic field in three axes. The accelerometer measures linear acceleration while the gyroscope measures the angular rate. These measurements are combined to achieve an improved attitude accuracy when used in air vehicles, robots and other mechanical systems. The BMI055 has its internal Digital Motion Processor (DMP) to process accelerometer and gyroscope signals to provide output in the form of quaternions, Euler angles and so on. The output of following algorithms can be achieved by internally calculations in the DMP: tilt angle, yaw, pitch, roll rotation, gravity vector, and linear acceleration.

In addition, vibration monitoring can be achieved by the BMI055 IMU. In vibration monitoring the accelerometer measure the vibration samples while the gyroscope measure the angular motion in the form of displacement, velocity, and acceleration. Finally, the measurements of both accelerometer and gyroscope are combined to identify the position and motion of any system.

The BMI055 IMU is highly reliable and energy-efficient which makes it suitable for advanced motion-sensing applications. Its small size, low power consumpion, high-performance analog and digital interfaces makes it easy to integrate into existing systems. Therefore, BMI055 IMU is a powerful and versatile sensor for motion-sensing applications in the market.

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