Description

SFM2 Wearable IMU with BLE and USB

The SFM2 Wearable IMU with Data Logging provides 9 DOF Sensor Fusion with Pressure/Altitude and Temperature and Humidity sensors included.  Multiple SFM2’s can be connected simultaneously(5 or more depending on ODR Rates).  The SFM2 9 DOF Wearable IMU absolute orientation sensor provides timestamped sensor data with 25us resolution with a user configurable time offset to be able to synchronize multiple SFM2’s. The SFM2 provides individual sensor configuration and completely selectable Sensor Output to BLE or USB2.0 interfaces.

SFM2 Specs

• Small Form Factor Enclosure: 40.9 x 28.1 x 14.5mm with slot for strap for wearing/attaching
• Android and iOS Mobile App for easy configuration, 3D View, and data-logging to CSV file
  • Easy to use BLE Characteristic Map and Services for custom mobile app development
  • Connect 5 or more SFM2’s to a single Mobile Device
  • Scrolling Real-time graphing for Pressure(hPa)/Altimeter, Relative Humidity, and Temperature
  • 4 Default SFM2 Modes: OFF, LOW POWER(26Hz), BALANCED(104Hz), PERFORMANCE(417Hz)
  • Tare and Drag SFM2 3D representation to user defined orientation
  • View BLE & USB/COM Statistics/Throughput analysis
  • Run Self-Test
• USB/COM Port Interface
  • Python API Library
  • 1Mbps Data rate(ASCII or Binary Output)
  • Connect Multiple SFM2’s to a single computer
  • Same configuration capability as BLE/Mobile App interface
• Each sensor can be individually configured via USB and BLE interface
• Fusion and Raw Sensor Data Streams can be individually enabled. Multiple Streams Simultaneously
  • Data log time stamped sensor data via USB and BLE interface.  Push to Cloud
  • Raw Sensor Data Streams:  3-Axis ACC, GYRO, MAG, and Pressure, Temp, Humdity
  • Fusion Data Streams: (12.5, 26, 52, 104, 208, 417, 833Hz ODR Rates)
    • Quaternion and Tared Quaternion
    • Linear Acceleration
    • Compass Heading and Tilt
    • Euler Angles: Yaw, Pitch, Roll 
    • Configurable Oversampling/Output divider to reduce data rates across BLE and USB interfaces.
• Precision time stamped data with 25us resolution and user configurable offset
  • Allows for Synchronizing multiple SFM2’s
• 3D View of SFM2 using Mobile Apps or Python API Library
• Store custom user configuration, change sensor name, restore factory defaults
• TARE function to zero quaternion coordinate system
• Headtare to allow manual ‘Tare’ adjustment
• Global Reference Frame Enable/Disable w/ user defined offset
• Ultra Low Power(~80hr battery life in Low Power Mode w/130mAh battery)
  • 1/3 Power Consumption, 1/3 Cost of comparable performance VN100, VN200, VN300 IMU’s
• Ultra Low Drift/High Precision <3°/hr
• Over the Air Firmware Updates
• Automatic Switchover from Battery Power to USB Power
• User configurable name for allowing multiple SFM2’s in application
• Selft-Test, Temperature Compensation, and automated calibration
• +/- 15kV ESD Protection
• Volume Discounts & OEM Customization

The SFM2 can be made available as an OEM model either as an assembled PCB with a lithium polymer battery or as a complete product with an enclosure. Sensor Maestros can completely customize the SFM2 including hardware, firmware, mobile application, and enclosure.

SFM2 Sensor Specs

• ACCELEROMETER
  • ODR RATES: 0, 12.5, 26, 52, 104, 208, 417, 833, 1667Hz
  • FULL SCALE RANGES: 2, 4, 8, 16g Full Scale Range Settings
  • Configurable Power Modes: High Performance, Normal, Ultra Low Power
  • Output Filter Configurations(Low Pass and High Pass Configurations)
  • 2nd Stage Low Pass Filter Enable/Disable
  • Fast Settling Enable/Disable
•  GYRO
  • ODR Rates: 0, 12.5, 26, 52, 104, 208, 417, 833, 1667Hz
  • FULL SCALE RANGES: 125, 250, 500, 1000, 2000 dps
  • Low Pass Filter configurable settings
  • High Performance Enable/Disable
  • High Pass Filter configurable settings
•  MAGNETOMETER
  • ODR Rates: 0, 12.5, 26, 52, 104Hz(Calibrated and Temperature Compensated)
  • Low Power Enable/Disable
  • Low Pass Filter Enable/Disable
• PRESSURE/ALTIMETER: 1, 10, 25, 50, 75, 100Hz
  • HIGH & LOW Alarms configurable by user
  • TARE function to zero Altitude
• Temp/Humidity: Continuous or Sample Interval Based(user configurable)

Applications

• Sports and Fitness Motion Monitoring and Recording
• Absolute Orientation
• E-Compass Heading
• Drone Control
• Stabilization Control
• Vibration Analysis
• Shock and Motion Detection
• Inclinometer and Angle Measurement

Additional Software

• PyGATT on Raspberry Pi example code
• Python ASCII Command Test software

OEM Customizable:

• Custom Hardware, Firmware, Application, Mobile App Development.
  • Customized Enclosure
  • Larger Battery for extended battery life
  • Additional sensors
  • Cloud connectivity
  • OEM/Customized Mobile App
  • OEM/Customized firmware application

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