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TSS-MUSB MicroUSB AHRS/IMU sensor

The YEI 3-Space Sensor™ Micro USB is an ultra-miniature, high-precision, high-reliability, low-cost SMT Attitude and Heading Reference System (AHRS) / Inertial Measurement Unit (IMU) which uses triaxial gyroscope, accelerometer, and compass sensors in conjunction with advanced processing and on-board quaternion-based orientation filtering algorithms to determine orientation relative to an absolute reference in real-time.

Orientation can be returned in absolute terms or relative to a designated reference orientation. The gradient descent calibration process and high update rates increase accuracy and greatly reduce and compensate for sensor error. The YEI 3-Space Sensor system also utilizes a dynamic sensor confidence algorithm that ensures optimal accuracy and precision across a wide range of operating conditions.

The YEI 3-Space Sensor Micro USB module features are accessible via a well-documented open communication protocol that allows access to all available sensor data and configuration parameters. Versatile commands allow access to raw sensor data, normalized sensor data, and filtered absolute and relative orientation outputs in multiple formats including: quaternion, Euler angles (pitch/roll/yaw), rotation matrix, axis angle, two vector (forward/up).

The 3-Space Sensor Micro USB module also offers an integrated Micro USB port for communication as well as solderable SMT pads for asynchronous serial communication.

MicroUSB AHRS/IMU sensor
MicroUSB AHRS/IMU dimension

Areas of Application

  • Robotics
  • Motion capture
  • Positioning and stabilization
  • Personnel/pedestrian navigation and tracking
  • Unmanned air/land/water vehicle navigation
  • Education and performing arts
  • Healthcare monitoring
  • Gaming and motion control
  • Accessibility interfaces
  • Virtual reality and immersive simulation

Key Features

The YEI 3-Space Sensor Micro USB has many features that allow it to be a flexible all-in-one solution for your orientation sensing needs. Below are some of the key features:

  • Ultra-small, light-weight high-performance AHRS at 23mm x 23mm x 2mm and only 1.3 grams
  • Fast sensor update and filter rate allow use in real-time applications, including stabilization, virtual reality, real-time immersive simulation, and robotics
  • Highly customizable orientation sensing with options such as tunable filtering, oversampling, and orientation error correction
  • Advanced integrated Kalman filtering allows sensor to automatically reduce the effects of sensor noise and sensor error
  • Robust open protocol allows commands to be sent in human readable form, or more quickly in machine readable form
  • Orientation output format available in absolute or relative terms in multiple formats (quaternion, rotation matrix, axis angle, two-vector)
  • Absolute or custom reference axes
  • Access to raw sensor data
  • Flexible communication options: USB 2.0, or asynchronous serial
  • USB communication through a virtual COM port
  • When used as a USB device, USB joystick/mouse emulation modes ease integration with existing applications
  • PCB edge contour allows for easy screw mounting.
  • Upgradeable firmware
  • RGB status LED
  • SMT solder pads allow asynchronous serial communication or connection of external button inputs.

Specifications

General

Part number

TSS-MUSB

Dimensions

23mm x 23mm x 2.2mm (0.9 x 0.9 x 0.086 in.)

Weight

1.3 grams (0.0458 oz)

Supply voltage

+3.3v ~ +6.0v

Power consumption

45mA @ 5v

Communication interfaces

USB 2.0, Asynchronous Serial

Filter update rate

up to 250Hz with Kalman AHRS(higher with oversampling)
up to 850Hz with QCOMP AHRS(higher with oversampling)
up to 1350Hz in IMU mode

Orientation output

absolute & relative quaternion, Euler angles, axis angle, rotation matrix, two vector

Other output

raw sensor data, normalized sensor data, calibrated sensor data, temperature

Serial baud rate

1,200~921,600 selectable, default: 115,200

Shock survivability

5000g

Temperature range

-40C ~ 85C (-40F ~ 185F)

Sensor

Orientation range

360º about all axes

Orientation accuracy

±1º for dynamic conditions & all orientations

Orientation resolution

<0.08º

Orientation repeatability

0.085º for all orientations

Accelerometer scale

±2g / ±4g / ±8g selectable for standard models
±6g / ±12g / ±24g selectable for HH models(coming soon)
±100g / ±200g / ±400g selectable for H3 models(coming soon)

Accelerometer resolution

14 bit, 12 bit(HH), 12 bit(H3)

Accelerometer noise density

99µg/√Hz, 650µg/√Hz(HH), 15mg/√Hz(H3)

Accelerometer sensitivity

0.00024g/digit-0.00096g/digit
0.003g/digit-0.012/digit(HH)
0.049g/digit-0.195g/digit(H3)

Accelerometer temperature sensitivity

±0.008%/°C, ±0.01%/°C(HH, H3)

Gyro scale

±250/±500/±1000/±2000 º/sec selectable

Gyro resolution

16 bit

Gyro noise density

0.009º/sec/√Hz

Gyro bias stability @ 25°C

2.5º/hr average for all axes

Gyro sensitivity

0.00833º/sec/digit for ±250º/sec
0.06667º/sec/digit for ±2000º/sec

Gyro non-linearity

0.2% full-scale

Gyro temperature sensitivity

±0.03%/°C

Compass scale

±0.88 Ga to ±8.1 Ga selectable  (±1.3 Ga default) 

Compass resolution

12 bit

Compass sensitivity

0.73 mGa/digit

Compass non-linearity

0.1% full-scale

 

Dimensions

Downloads and Documentation

Documentation