Bosch launches high-performance IMU BMI085 for virtual and augmented reality applications
- Realistic immersive experience for virtual and augmented reality
- High stability and low latency significantly reduce the motion sickness effect
- Low-noise accelerometer
- Closed-loop gyroscope with exceptionally low bias instability
- Outstanding temperature stability
At electronica China in Shanghai, Bosch Sensortec launches the BMI085, a high-performance 6-axis Inertial Measurement Unit (IMU). The BMI085 integrates a 3-axis, 16-bit MEMS acceleration sensor and a 3-axis, 16-bit MEMS gyroscope in a single compact package.
This powerful IMU is ideally suited for demanding virtual reality (VR) and augmented reality (AR) applications as well as other applications, such as navigation, body/human motion tracking and high-end gaming. The compact MEMS sensor package is filled with features, combining an extremely low-drift gyroscope with a low-noise accelerometer to significantly reduce the unpleasant motion sickness effect. Its ultra-precise instantaneous detection of head movements reduces time lag to an almost imperceptible minimum. Thus, electronic device manufacturers are able to create a more authentic and immersive VR and AR experience that enables headset users to engage their virtual environments for longer periods without requiring frequent breaks.
Accuracy and low latency for virtual and augmented reality
The exceptionally low latency of the new BMI085 enables headset manufacturers to eliminate image drifts and deliver a true real-life experience. The IMU delivers a low motion-to-photon latency of less than 3 ms and achieves near perfect stability in environments with high temperature fluctuations as often encountered in continuous HMD (head-mounted display) or AR headset scenarios. This further improves accuracy, which is critical in today's lightning fast high-definition AR/VR applications.
Outstanding temperature stability
The sensor’s accelerometer has rock-solid temperature stability, delivering an impressive low temperature coefficient offset (TCO) of typically less than 0.2 mg/K and temperature coefficient sensitivity (TCS) of only 0.002 %/K. Bias instability of the gyroscope is typically below 2 °/h.
The gyroscope of the BMI085 features a robust closed-loop analog-to-digital conversion mechanism, which ensures low drift characteristics even in high-fluctuation temperature environments. The accelerometer achieves a noise density of under 120 μg/√Hz and the IMU’s accuracy is further boosted by data synchronization of the accelerometer and gyroscope.
The BMI085 is housed in a compact 3.0 x 4.5 x 0.95 mm³ package and is pin-to-pin compatible with Bosch’s BMI055 IMU, making design migration to the new BMI085 extremely smooth and effortless.
Bosch has more than 20 years of experience in the fields of inertial MEMS sensors and accelerometers, and brings automotive level reliability and performance to the consumer electronics sensor space. The BMI085 is another example of this rigorous attention to quality and reliability.