Technology

 

The patented technology at the heart of our systems enables them to meet performance levels that exceed by those of other commonly used tracking technologies. Specifically, the capabilities described below enable sensors to be used far more effectively and in ways not previously possible. See Case Studies for examples of how our customers have used these unprecedented capabilities

 The inertial tracking solutions not only have the dynamic performance characteristics to meet the requirements of the most demanding tasks, but also applicable to many application areas. The important features of our systems, including those that give them the ability to tolerate harsh environments, are covered in the points below:

Responsiveness -It is in fact that the high rate of turn along with the high final speeds of up to 2,000°/s that makes the application achievable.

Accuracy -While delivering their impressive levels of speed and rotation our systems maintain high levels of accuracy required by many of the tasks in their areas of application, ensuring accurate registration of sensor data. 

Robustness - The structure of our systems means that all algorithm, components and sensor electronics remain stationary and reside underneath the housing, the platform to which the system is environmentally sealed to whatever required by an application.

Reliability - The operation of the technology ensures continuous operation at high levels of performance over very long periods of time without failure. 

Size and Weight - The implementation of our technology will be applied with a significantly smaller and lighter device than alternative technologies, while maintaining vastly superior dynamic capabilities. 

Flexibility - The flexibility of the technology allows the systems to be adaptable to many applications without the constraints of size and weight. 

 

 

 

Sensor Fusion Algorithm --- Kalman filtering

The VMSENS sensor fusion algorithms typically fuse accelerometer, gyroscope, GPS and magnetometer data to deliver accurate and reliable motion-sensing information, and with quaternion math internally base Kalman Filter in order to ensure complete operation in any orientation without mathematical singularities.

The Kalman filter provides by VMSENS can be tuned in different ways, depending on the application. To accommodate the best performance, VMSENS offers user different parameters that are specifically tuned for the special application.

 

AHRS Attitude Heading Reference System

AHRS consist of either solid-state or MEMS gyroscopes, accelerometers and magnetometers on all three axes. The key difference between an IMU and an AHRS is the addition of an on-board processing system in an AHRS which provides solved attitude and heading solutions versus an IMU which just delivers sensor data to an additional device that solves the attitude solution.

AHRS sensors were originally designed to replace the large traditional mechanical gyroscopic aircraft flight instruments and provide better reliability and accuracy. Typically an AHRS will consists of MEMS 3-axis angular rate gyro, a 3-axis MEMS accelerometer, and a 3-axis magnetic sensor known as a magnetometer. An onboard Kalman filter is used to compute the orientation solution using these measurements. Some AHRS sensors will also use GPS to help stabilize the gyro drift and provide a more accurate estimate of the inertial acceleration vector.

 

 

 

GPS enhanced AHRS

To improve the AHRS performance under long-term accelerations and under conditions with severe magnetic disturbance, VMSENS has launched the GPS enhanced inertial navigation solution.

This solution fuse GPS and accelerometer to determine accelerations and velocity, which can be used to make the referencing with gravity more robust, resulting in a robust roll and pitch. Using the heading and course of the GPS, it is also possible to retrieve heading without using the magnetometers.

 

 

 

 

 

Motion Capture/ Performance capture

Mocap/ Motion Capture are terms used to describe the process of recording movement of one or more objects or persons. It is used in military, entertainment, sports, and medical applications.

In filmmaking, and games, it refers to recording actions of human actors, and using that information to animate digital character models in 3D computer animation.

When the Mocap includes face and fingers or captures subtle expressions, it is often referred to as performance capture.

MoX Suit is a flexible, camera-less full-body human motion capture solution. This portable system can be used indoors and outdoors.

No Markers, No Cameras, & No Occlusions starting from VMSENS Motion Capture, can be used in 3D character animation (for game, film, TV, advertising), Virtual Reality / Augments Reality, Training & Simulation, Sports science, Rehabilitation, Biomechanics research area.

 

 

Virtual reality & Simulation

Virtual reality (VR) is a term that applies to computer-simulated environments that can simulate physical presence in places in the real world, as well as in imaginary worlds.

Simulation is often used in the training of civilian and military personnel. This usually occurs when it is prohibitively expensive or simply too dangerous to allow trainees to use the real equipment in the real world. In such situations they will spend time learning valuable lessons in a "safe" virtual environment yet living a lifelike experience (or at least it is the goal). Often the convenience is to permit mistakes during training for a safety-critical system.

 

Low-Cost MEMS AHRS --- VMSENS

Lots of companies now offer low cost (<$10K) AHRS sensors on the market. All of these sensors utilize MEMs gyros, accelerometers, and magnetometers. The main difference between the low-cost AHRS sensors on the market is the type of attitude estimation algorithm utilized on the sensor.

VMSENS improved the inertial sensors calibration and algorithm to design Low-Cost AHRS’s that provide 3D orientation for a broad range of applications from unmanned vehicles/ craft, the stabilization of antenna and camera systems to human motion capture.

 

 

Biomechanical

Biomechanics is the study of the structure and function of biological systems by means of the methods of “mechanics.” – Which is the branch of physics involving analysis of the actions of forces. Within “mechanics” there are two sub-fields of study:

Statics: the study of systems that are in a state of constant motion either at rest (with no motion) or moving with a constant velocity.

Dynamics: the study of systems in motion in which acceleration is present, which may involve kinematics (the study of the motion of bodies with respect to time, displacement, velocity, and speed of movement either in a straight line or in a rotary direction) and kinetics.

VMSENS provide the idea wireless motion tracker ( iVM-w ) product for dynamics and statics analysis of biological systems.

 

Gait Analysis

 

 

Gait analysis is the systematic study of animal locomotion, more specific as a study of human motion, using the eye and the brain of observers, augmented by instrumentation for measuring body movements, body mechanics, and the activity of the muscles. Gait analysis is used to assess, plan, and treat individuals with conditions affecting their ability to walk.

 

 

Sports Biomechanics

Sports biomechanics is a quantitative based study and analysis of professional athletes and sports' activities in general. It can simply be described as the Physics of Sports. In this subfield of biomechanics the laws of mechanics are applied in order to gain a greater understanding of athletic performance through mathematical modeling, computer simulation and measurement.

 

 

Dead-Reckoning

 

In navigation, dead reckoning is the process of calculating one's current position by using a previously determined position, or fix, and advancing that position based upon known or estimated speeds over elapsed time, and course.