9-Axis BLE Magnetometer Gyroscope IMU

SKU: SMA-005
  • High-Precision IMU Sensors and Algorithms: The module integrates high-precision IMU gyroscopes, accelerometers, and geomagnetic field sensors, with advanced microprocessors and Kalman filtering algorithms to quickly determine the real-time motion posture.
  • High Measurement Accuracy and Stability: It provides an IMU attitude measurement accuracy of 0.2° and high stability, outperforming many professional inclinometers in dynamic environments.
  • Z-Axis Heading Angle and IMU Sensor Fusion: The Z-axis heading angle is incorporated into the geomagnetic sensor filter fusion, which mitigates drift errors in IMU gyroscope integration and ensures stable, long-term heading angle data output.
  • Customizable Output and High Frequency: The module supports customizable output content with a data output frequency of 200Hz (default 10Hz), making it adaptable for various applications.
  • Expansion Ports and Embedded Design: It features 4 expansion ports (configurable for analog input, digital input, and output), and uses stamp hole gold plating technology for integration into a user’s PCB, providing a thinner, smaller, and more reliable design.

16,72

  • The module integrates high-precision IMU gyroscope, accelerometers, and geomagnetic field sensors, and uses high-performance microprocessors and advanced dynamics calculation and Kalman dynamic filtering algorithms to quickly solve the current real-time motion posture of the module.
  • The module integrates an attitude solver and cooperates with the dynamic Kalman filter algorithm to effectively reduce measurement noise and improve measurement accuracy. It can accurately output the current attitude of the module in a dynamic environment, with an attitude measurement accuracy of 0.2°, extremely high stability, and even better performance than some professional inclinometers.
  • The Z-axis heading angle is added to the geomagnetic sensor filter fusion, which solves the cumulative error caused by the drift of the IMU gyroscope integral in the 6-axis algorithm, and can output heading angle data stably for a long time.
  • The output content can be selected arbitrarily, the data output frequency is 200Hz, and the default is 10HZ.
  • Reserve 4 expansion ports, which can be configured as analog input, digital input, digital output, and other functions.
  • Using stamp hole gold plating technology, it can be embedded in the user’s PCB board. The 4-layer PCB board technology is thinner, smaller, and more reliable.
  • Bluetooth 5.0: supports Android/IOS operating system (actual use depends on the final device).

 

Accelerometer parameters

Parameters Condition Typical value
Measuring range ±16g
Resolution ratio ±16g 0.0005(g/LSB)
RMS noise Bandwidth=100Hz 0.75~1mg-rms
Static zero drift Place horizontally ±20~40mg
Temperature drift -40°C ~ +85°C ±0.15mg/℃
Bandwidth 5~256Hz

Gyroscope parameters

Parameters Condition Typical value
Measuring range ±2000°/s
Resolution ratio ±2000°/s 0.061(°/s)/(LSB)
RMS noise Bandwidth=100Hz 0.028~0.07(°/s)-rms
Static zero drift Place horizontally ±0.5~1°/s
Temperature drift -40°C ~ +85°C ±0.005~0.015 (°/s)/℃
Bandwidth 5~256Hz

Magnetometer parameters

parameters Condition Typical value
Measuring range ±2Gauss
Resolution ratio ±2Gauss 0.0667mGauss/LSB

Pitch and roll angle parameters

parameters Condition Typical value
Measuring range X:±180°
Y:±90°
Inclination accuracy 0.2°
Resolution ratio Place horizontally 0.0055°
Temperature drift -40°C ~ +85°C ±0.5~1°

Heading angle parameter

parameters Condition Typical value
Measuring range Z:±180°
heading accuracy 9-axis algorithm, magnetic field calibration, dynamic/static 1°(Without interference from magnetic fields)【1】
6-axis algorithm, static 0.5°(Dynamic integral cumulative error exists)

【2】

Resolution ratio Place horizontally 0.0055°

Note:【1】Please perform magnetic field calibration in the testing environment before use to ensure that the sensor is familiar with the magnetic field in the environment. During calibration, please stay away from magnetic interference. 【2】In some vibration environments, there will be cumulative errors. The specific errors cannot be estimated and are subject to actual testing.

Specification

Parameter Condition minimum value Default maximum value
Communication Interface UART 115200bps 115200bps 115200bps
Output content 3-axis acceleration, 3-axis angular velocity, 3-axis magnetic field, 3-axis angle, quaternion, port status
Output rate 0.2Hz 10Hz 200Hz
Start Time 1000ms
Number of cascades Bluetooth multi-link adapter 4pcs
Bluetooth transmission distance open environment         50m 90m
Operating temperature -20℃ 60℃
Storage temperature -40 85
Shock proof 20000g

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