Platform Documentation

QSense Motion Intelligence Platform – Technical Overview

The QSense platform is a modular, high-performance motion intelligence system designed for accurate, real-time human motion capture in demanding real-world environments. It combines wearable IMU hardware, wireless communication, embedded processing, synchronization technology, open APIs, and tooling into a single coherent ecosystem.

This page provides a technical overview of how the QSense platform is structured, how data flows through the system, and how the components work together – from sensor to application, from prototype to product.

1. Platform Overview

At its core, the QSense platform is built to answer one question:

How do we reliably capture, synchronize, process and expose human motion data in environments where accuracy, timing and robustness matter?

To achieve this, QSense combines:

• High-performance wearable IMU sensors
• Real-time wireless communication
• Deterministic time synchronization
• Embedded firmware & motion algorithms
• Open SDKs and APIs
• Visualization, setup and logging tools
• OEM & scale-up support

All components are designed to work seamlessly together, while remaining modular and open for integration into your own systems.

2. System Architecture

The QSense platform follows a layered architecture:

a) Sensor Layer – Wearable IMU Devices

At the edge of the system are the QSense wearable IMU sensors. Each sensor integrates:

• 3-axis accelerometer
• 3-axis gyroscope
• 3-axis magnetometer (optional use)
• Embedded processing
• Wireless BLE 5.2 communication
• Local storage and control interfaces

These sensors are designed for:

• low drift
• low latency
• high mechanical stability
• long-duration wearable use
• indoor and outdoor environments

b) Communication Layer – Wireless Transport

QSense uses BLE 5.2 as the primary wireless transport layer. Depending on configuration, data is transmitted:

• directly to a PC, tablet or mobile device
• via the QSense BLE dongle for maximum throughput and stability
• to the FieldSync Hub for fully portable, computer-free operation

The communication layer supports:

• high data rates (up to 2 Mbps)
• multi-sensor setups
• deterministic connection intervals
• time-synchronized operation

c) Firmware & Processing Layer

Each QSense sensor runs embedded firmware responsible for:

• sensor configuration
• data acquisition
• buffering and streaming
• time synchronization
• algorithm execution (e.g. Madgwick fusion)
• quality monitoring

This layer is optimized for:

• real-time operation
• low power consumption
• predictable timing behavior

d) Synchronization Layer – QSync Architecture

Accurate motion analysis depends on accurate timing.

QSense implements a dedicated synchronization architecture (QSync) that supports:

• continuous wireless clock synchronization across sensors
• absolute timestamping of all data samples
• sub-millisecond inter-sensor alignment

Two main modes are supported:

TimeSync Mode

• Continuous runtime synchronization
• Typical accuracy < 60 µs (max < 150 µs)
• For research-grade analysis and multi-modal fusion

Low Latency Mode

• Minimal end-to-end delay
• Local timestamps per sensor
• Drift ≤ 2 ms per minute
• For closed-loop and interactive applications

This enables clean alignment with:

• EMG
• ECG / PPG
• force plates
• video
• external triggers

e) SDK & API Layer – Data Access

QSense exposes motion data through open, documented interfaces.

Available interfaces include:

• C# / .NET API
• Unity integration
• Python interface (for research)
• MATLAB interface (on request)
• Native iOS API (beta)

The API layer allows you to:

• configure devices
• control streaming and logging
• access raw or fused data
• manage multi-sensor setups
• retrieve metadata and quality indicators

QSense APIs are designed to be:

• transparent
• deterministic
• developer-friendly
• suitable for production systems

f) Application & Tooling Layer

On top of the platform, QSense provides tools for:

• sensor assignment and calibration
• live 3D visualization
• recording and export
• system validation

This includes:

• Windows setup & visualization application
• Mobile demo applications
• FieldSync Hub interface
• High-speed download tooling
• Example applications and reference implementations

These tools accelerate setup, reduce integration friction and support validation.

3. Data Flow – From Sensor to Application

A typical data path in the QSense platform looks like this:

1. IMU sensor captures acceleration, angular velocity and magnetic field
2. Firmware processes data
3. (Optional) fusion algorithms compute orientation
4. Samples are timestamped and synchronized
5. Data is transmitted wirelessly via BLE
6. Data is received by dongle, hub or native BLE stack
7. API layer exposes data to your application
8. Your application processes, visualizes or stores the data

This architecture supports:

• real-time streaming
• offline logging (using the FieldSync HUB)
• hybrid workflows
• closed-loop feedback systems

4. Data Types & Output Formats

Different applications require different data representations. QSense supports:

Raw Sensor Data

• Accelerometer
• Gyroscope
• MagnetometerFor full control, custom algorithms and research transparency.

Fused Kinematic Data

• Stable orientation and motion estimatesFor biomechanics, posture and workload analysis.

Quaternion Data (6DoF / 9DoF)

• Real-time orientation outputFor motion capture, XR, robotics and control.

BVH (Biovision Hierarchy)

• Skeletal motion representationFor animation, simulation and XR pipelines.

Mixed Mode

• Combine raw + fused + quaternion in one session. For hybrid workflows.

All outputs share:

• consistent timestamps
• synchronized time base
• configurable sample rates (1–800 Hz depending on setup)

5. Typical Platform Configurations

The QSense platform is used in different configurations depending on application:

Lab / Clinic Setup

• Multiple IMU sensors
• BLE dongle
• Windows application
• TimeSync modeFor biomechanics, rehabilitation and validation studies.

Field / Outdoor Setup

• IMU sensors + FieldSync Hub
• Fully wearable, no laptop or phone
• High robustnessFor sports, outdoor biomechanics and daily-life monitoring.

XR / Interactive Setup

• IMU sensors
• Direct streaming to Headset (no wireless dongle needed)
• Unity / Unreal integration
• Low Latency mode. For real-time avatar control and feedback.

OEM / Embedded Setup

• Bare PCB or custom enclosure
• Custom firmware and algorithms
• Direct API integrationFor commercial products.

6. Algorithms & Processing

QSense provides built-in support for:

• 6DoF Madgwick fusion
• 9DoF Madgwick fusion
• magnetic disturbance compensation
• gyro bias compensation
• quality indicators

Raw data is always available, allowing:

• custom fusion strategies
• machine learning pipelines
• domain-specific processing
• research reproducibility

7. Tooling & Software Components

The platform includes:

• Windows setup & visualization application
• Mobile demo apps (Android / iOS)
• FieldSync Hub software
• High-speed download tooling for loggers
• Example code & reference projects

These tools support:

• setup
• calibration
• validation
• troubleshooting
• demonstration

8. From Prototype to Product

The QSense platform is designed to scale.

You can use the same core technology to:

• validate concepts
• run pilots
• build applications
• embed in products
• scale to volume production

Through 2M Engineering, QSense provides:

• custom device development
• algorithm development
• data calibration & validation
• DFM support
• EVT / DVT / PVT guidance
• manufacturing and supply chain support

This ensures that prototypes do not hit technical ceilings when moving to production.

9. Designed for Real-World Use

The QSense platform is engineered for:

• unpredictable environments
• long-duration wear
• outdoor use
• high-movement scenarios
• professional workflows

It is used in:

• clinical rehabilitation
• sports performance
• industrial ergonomics
• defense & tactical training
• XR & simulation
• research environments

The common denominator:

real-world conditions where accuracy, timing and robustness are critical.

10. Open by Design

QSense is built on the principle that:

Your data is your data.

We do not lock you into:

• proprietary dashboards
• closed formats
• black-box pipelines

Instead, we provide:

• raw access
• documented APIs
• exportable formats
• transparent processing

So you stay in control of:

• your architecture
• your roadmap
• your product strategy

11. Summary

The QSense Motion Intelligence Platform is a complete, modular system for capturing, synchronizing and processing human motion data in demanding real-world environments.

It combines:

• high-performance wearable hardware
• deterministic timing
• open integration
• real-time capability
• and OEM scalability

into one coherent platform.

Whether you are building a research setup, an interactive training system, or a commercial product – QSense provides the technical foundation to build on.

Let’s Talk Architecture

Every application is different.

If you would like to discuss your system architecture, integration approach or product roadmap, we are happy to think along.

Talk to our team