Wireless Gyro Sensor
Description
Utilising a single and a dual axis angular rate gyroscopes, the Shimmer Gyro module can perform complex motion sensing applications. When combined with the Shimmer platform’s integrated accelerometer the assembled unit provides 6 degrees of freedom motion capture. See how the Gyro module is connected to the Shimmer platform.The assembled unit offers raw serial digital outputs of 3D acceleration and 3D angular rate for inertial measurements. The Gyro module uses next-generation MEMS technology that offers higher performance, lower power and a rigid board implementation to ensure a perpendicular Z-axis. The Gyro Board is connected to the Shimmer main board via an internal connector pin, and is contained within the Shimmer enclosure. With fixed reference output, the Gyro Board runs off a secondary LDO for improved power-supply noise rejection.
Technical Highlights
- Spec: InvenSense 500 series MEMS Gyros
- Full Scale Range (°/sec): ±500
- Sensitivity (mV/°/sec): 2
Features and Benefits
6DoF Sensing Capabilities- Calibration available with Shimmer standalone LabVIEW application
- Configurable sampling rate
- Lower power and a rigid board implementation reduces alignment error and provides mechanical stability
- Auto Zero function for offset calibration
- Supported by the Shimmer LabVIEW Library and ShimmerConnect application
- Designed to be wearable, provides full mobility either as a wireless transmitter or autonomous data logger
- Real-time signal viewing on computer (or other data acquisition system) or store to microSD card for later download and analysis
- Small size and weight of 25g provides unrestricted movement, use on any body segment, and ideal for athletes, children, elderly, or patients with a disability
- Programmable button for application control (such as sampling start/stop, RF transmission start/stop, data marker)
- Programmable indicator
- Pinhole reset
- Offers greater ergonomic value than wired units or camera based solutions
- Easily combine Gyro data with Shimmer’s integrated accelerometer for greater contextual information
- Easily combine Gyro data with the full range of Shimmer Biophysical, Kinematic and Ambient sensor modules
Raw Data Capture
- Transmitted to a host in real time with the Shimmer device
- Stored locally for a later upload of data captured
- MSP430 microcontroller (8mHZ, 16 Bit), Bluetooth – RN-42, 802.15.4 radio - TI CC2420, Integrated 2GB micro SD card, 450mAh rechargeable Li-ion battery, stylish enclosure, wearable and highly configurable to user/developer’s specific needs
Applications
The Shimmer Gyro (IMU) can be utilised in a wide variety of applications, and when combined with Shimmer’s integrated Accelerometer, offers full 6-degree freedom motion capture. Some typical applications include- Biomechanics
- Gait analysis
- Sports technique and analysis
- Motion tracking of objects or people
- Gestural computing and human-computer interface research
- Remote Home Monitoring and mHealth
- Motor function analysis
- Virtual reality and Gaming
Specifications
1 x Gyro Daughter Board
1 x Kinematics Top Enclosure
Sensing:
Full Scale Range (°/sec): ±500
Sensitivity (mV/°/sec): 2
Technical Features:
• Two separate outputs per axis for higher speed motions and lower-speed precise movements:
-500°/s full scale range (higher speed)
-110°/s full scale range (high precision)
• Low bias drift over temperature
• Auto Zero function
• Gyro temperature monitoring for precision sesning
• Integrated amplifiers & low-pass filters
• Highest cross-axis isolation by design
• Superior vibration rejection over a wide frequency range
• 10,000 g shock tolerance
• 3V single supply operation
Benefits:
• Highest dynamic range to measure fast-action motion
• Integrated electronics for complete signal conditioning
• Lowest cross-axis sensitivity for best signal accuracy
• Hermeticity for high temperature & humidity resistance
• Most robust design for high impact consumer electronics
