Smart sensor: BHI160BP
Position tracking. Integrated sensor fusion and PDR.
BHI160BP
Smart sensor combining accelerometer, gyroscope and PDR software.
The BHI160BP is an application-specific upgrade of the BHI160 family and comes with a Pedestrian Dead Reckoning (PDR) algorithm that enables pedestrian position tracking at a fraction of the power consumption of GNSS only solutions. BHI160BP integrates a 3-axis gyroscope, a 3-axis accelerometer and a programmable microcontroller together with a PDR-specific algorithm in one single sensor package. The smart sensor enhances the system in two aspects: It reduces the system power consumption and improves the robustness of the position tracking whenever the GNSS signal quality is low.
Technical data
| Parameter | Technical data |
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Parameter
Package dimensions
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Technical data
3.0 x 3.0 x 0.95 mm³
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Parameter
Temperature range
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Technical data
-40 °C ... +85 °C
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Parameter
Supply voltage (VDDIO)
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Technical data
1.6 … 3.3 V
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Parameter
Supply voltage (VDD)
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Technical data
1.71 … 3.6 V
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Parameter
Typ. current consumption
– Full 6DoF PDR¹ – Full 6DoF Fusion @100 Hz ODR¹ – Full 9DoF Fusion @100 Hz ODR² – Significant motion – Step detector – Suspend mode |
Technical data
1.3 mA 1.2 mA 1.3 mA 128 µA 131 µA 11 µA |
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Parameter
PDR Performance
– Typical power saving³ – Position accuracy⁴ – Step counting error |
Technical data
50% - 80% 10% <5 % |
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Parameter
Sensor Fusion Performance⁵
– Static accuracy (head., pitch, roll) – Dynamic accuracy (head., pitch, roll) – Calibration time – Orientation stabilization time |
Technical data
2, 2, 2, degrees 7, 2, 2, degrees <1 second 0.2 seconds |
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Parameter
Implemented virtual sensor types with IMU only
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Technical data
PDR, accelerometer, gravity, linear acceleration, gyroscope, gyroscope uncalibrated, game rotation vector, step counter, step detector, significant motion, tilt detector, pickup gesture, wake up gesture, glance gesture, activity recognition
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¹ Sensor typical power consumption
² With attached Magnetometer
³ 50% till 80% are the typical values of system power saving for standard user walking profile andsystem including typically available GNSS module characteristics. Actual power saving usually vary depending on the application and GNSS module.
⁴ Relative position estimation error for 75% of the population of various user profiles and movement profiles (walking, jogging, standing still, etc.) will have a typical error of 10% or better relative to the walked distance. This is the relative error of the BHI160BP PDR algorithm without GNSS assistance.
⁵ Performance measured for 9DOF solution (with attached magnetometer BMM150).
