iVM-w Wireless inertial 3D Motion Tracker
Inertial Motion Sensing Technology
Apply to ‌ ‌ Movement Science
Rehabilitation
Virtual Training & Simulations
The iVM-w is a completely wireless motion tracker without signal & power line restrictions, can be use anywhere, under any lighting condition: outside, office, no lab or simulated environment required. One of the breakthroughs of the iVM™-w is the Mon-Bus™ wireless protocol; this wireless protocol can be used to real-time talk with multiple motion trackers wireless with low latency. The iVM-w can be widely used for virtual reality, motion analysis and also other field where low-cost & high-performance 3D orientation measuring is needed.
Features Completely wireless inertial motion trackers
ISM 2.4 GHz radio frequency, worldwide license free use Real-time computed attitude/heading and inertial dynamic data 360º orientation referenced by gravity and Earth Magnetic Field Integrated 3D gyroscopes, accelerometers and magnetometers
Freedom Movement Completely wireless, no wire-line restrictions Portable case for easy transportation No occlusion or line-of-sight restrictions Use anywhere, under any lighting condition
Ease Use Fast click into the specially designed straps belt
Intuitive Windows software for real-time view, easy logging and export Text data logging export to many software applications End to End software support
Performance The VMSENS device uses multi-inertial sensors to estimate the orientation. The single used gyroscopes to calculate orientation, the drift is inevitable. To compensate for drift completely, the device corrects its orientation using the gravity and the earth magnetic field as reference vectors. The VMSENS iMTFusion™ algorithm can cope with magnetic and accelerations, resulting in a reliable orientation estimate. Additionally,
the VMSENS provided a magnetic field calibration routine to correct for hard and soft iron effects.
Output 3D orientation Quaternion/ Euler/ DCM 3D acceleration/ 3D rate of turn/ 3D magnetic field
System Performance Dynamic range ± 360 deg - Pitch/ -Roll/ -Heading Acceleration ±50/160 m/s² (5/ 16g) Max rate of turn ±1800°/sec Static accuracy pitch/ roll < 0.5 deg Static accuracy heading1 < 1 deg Dynamic accuracy2 2 deg RMS Angular resolution 0.05 deg Max updated rate 120 Hz 1 in homogeneous magnetic environment, 2 under condition of VMSENS algorithm, decided by motion type
Wireless Performance Transmission range Charging time Continuous use Data rate
up to 50m in open space,25m in office 1.5 Hours 4 Hours 1X iVM-w 120HZ / 6X iVM-w 50Hz/ 8X iVM-w 30HZ
Sensor Specification
Dimension Range linear Gyro bias stability Noise Alignment error Axis-to-axis Alignment error Axis-to-frame Linear Acceleration Effect on Bias
Gyroscope 3D ± 1800 deg/s（Max） 0.2% of FS < 0.025 deg/s （25︒） 0.03 deg/s/√Hz 2% 0.1 °/sec/g
Physical Specification Environment Working Environment Dimensions (WxLxH) Weight
-20.... +60 oC 0.... +40 oC 59×34×14 mm 32 g
Accelerometer 3D ± 50 m/s² 0.2% of FS
Magnified 3D ± 450 mGauss 0.1% of FS
250 μg/√Hz rms 0.1 deg 1 deg
0.5 mGauss (1σ) 0.25 deg 0.5 deg
Mon-Bus Charging & and Data Transmission Station Wireless Standard Frequency Transmission Range Updated Rate Power Supply PC Interface Charging Interface
Base on IEEE 802.15.4 PHY ISM2.4Ghz 1～32 units Open space 50m/ office 25m 1X iVM-w 120HZ / 6X iVm-w 50Hz/ 8X iVM-w 50HZ EU/ US/ UK Power Adapter USB Micro-USB
Environment Dimensions (WxLxH)
-25°C - 80°C 180×90×35mm
Weight
180g
Mon-Bus Dongle Function Dimensions (WxLxH) Weight PC Interface
Replace Mon-Bus Station 100×200×30mm 12g USB
In traditional radio protocols, such as Bluetooth®, WIFI®, Zigbee®, there are a lot of time for acknowledgement of data packet reception and retransmission, which means the network throughput will drop dramatically, cannot be used in real time data transmit, specifically in real-time motion tracking applications, with Mon-Bus™, specifically developed for inertial
motion tracking applications, make all the things become true. The VMSENS Mon-Bus™ protocol brings the ease use of wireless technology to inertial 3D motion tracking. Without single & power line restrictions, can be use anywhere, under any lighting condition: outside, office, no lab or simulated environment required.
Software System Integration With the VMSENS SDK, your preferred solution is easy and fast to realize, with the demo source code, you will have your measurement unit up and running in just a few minutes to start your first R&D. The COM-Object and DLL API interface Development Tools The VMSENS COM-Object and DLL API will help save time in interfacing in a reliable way with VMSENS devices in a Windows environment. Direct low level interfacing gives full control and maximum flexibility. The example code (C/C++, Excel (VBA) and Matlab/ Labview) can be easily extended to a user-specific program. Low Level Communication Lib (For embedded systems) (optional) VMSENS provided low-level C libraries for embedded developments to ease the development procedure on embedded systems. Sample code The VMSENS provide sample code of the development ways mentioned above, by reading the sample code and comments, unprofessional developers can developer the motion applications in a few minutes time. VMSENS Motion Tracker Network Manager The VMSENS Motion Tracker Network Manager is graphical interfaced software to be used with the VMSENS devices, by using the Motion Tracker Network Manager, user can get ,save and view the real-time inertial motion data easily, the data is shown via friendly graphical component to the you. MotionBox Studio With MotionBox Studio, the research can fast capture the human movement analysis results can speed the human motion analysis of and promote the interdisciplinary researches.
The 3rd Party Support
Operation Environment Operating system: Windows 7/ Vista/ XP Processor: Dual core e.g. Core2 (minimal Pentium4 - 2.6 GHz) Graphics card: Any graphics card with DirectX 9 hardware acceleration
High Level Interface COM interface VMC Level-1
DLL interface
Windows Platform Application e.g. VMSENS Explorer, Matlab, Lab VIEW, etc
Low Level Communication Interface VMC Level-2
VMSENS C lib and head files
VMC Level-3
Command Interface
VMC Level-4
Hardware Interface
VMSENS Devices
Development Kit For the fresh user, we recommend to choose the development kit package, include： •iVM-w motion tracker (depend on selected) •Mon-Bus Station and Dongle •Cable •Software kit •Portable Case
Embedded Application Or NOOS application e.g. WinCE, Linux, MCU communication interface, etc
VMSENS device Included: VM-I, VMBT, VM-OEM, etc
Application
Traditional systems for capturing human movement require expensive and fixed
infrastructures that define and limit the subject to a specific tracked volume. The VMSENS wireless motion tracker offers a source less solution that allows the subject to move freely in any environment. In addition to biomechanical studies, motion capture may be used to study how external, psychological factors affect balance, movement ability and performance. The VMSENS motion tracking & analysis system is widely used in the sport science, human motion analysis field, the human motion tracking and analysis results can speed the human motion analysis of and promote the interdisciplinary researches. Inertial Systems have a primary importance in virtual reality systems. For example, to track head/ arms/legs movements, according to the segment orientation, the virtual reality system can change the view point in order to reflect, in real time, what you are
looking at. By moving the sensor in your hand, you can also interact with virtual objects, just as if you hold the object for real.
Movement Science Biomechanics Rehabilitation Gait analysis Sport analysis Virtual reality Training simulations
Gesture interaction
w w w.vm s e n s . co m VMSENS Inertial Technologies (Beijing) CO.,LTD
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