The Pressurefilms High-Speed 3D Instrumented Treadmill is a high-precision force-measurement system designed for motion testing of humans, humanoid robots and quadruped robots. Equipped with six-component force sensing modules, it simultaneously acquires three-axis forces and three-axis moments, enabling real-time measurement of ground reaction forces (GRF) and center-of-pressure (COP) trajectories to capture transient biomechanical characteristics during walking and running. The platform provides adjustable speed and incline and incorporates an emergency safety braking system. It supports modular multi-unit configurations and synchronized acquisition with motion-capture, plantar-pressure, EMG and video systems. Dedicated analysis software provides real-time curve visualization, data-segment extraction/export and historical-data playback. Typical applications include sports-biomechanics research, athlete gait optimization, sports-injury mechanism analysis, lower-limb rehabilitation

assessment and human balance research, providing a stable and reliable digital test solution for quantitative human-movement biomechanics.

SENSOR SPECIFICATIONS

PRINCIPLE

The high-speed 3D instrumented treadmill incorporates six-component force-sensing units. Ground reaction forces generated during treadmill motion are transmitted to the sensing units, which synchronously acquire the three-axis forces Fx, Fy and Fz and the three-axis moments Mx, My and Mz. Raw mechanical signals are conditioned and digitized by A/D conversion, then processed to resolve the force/moment components and calculate the center-of-pressure (COP) trajectory. Data are transmitted to the acquisition software for real-time force-curve visualization, storage and playback, with external synchronization for treadmill parameters, motion capture, high-speed cameras and other devices.

FEATURES

Integrated Gait Biomechanics Analysis Software

GAIT KINETICS：3-axis force acquisition Real-time visualization of key gait parameters Real-time ground-reaction-force curves support continuous monitoring throughout walking and running, providing immediate reference for rehabilitation assessment and athletic-performance analysis.

GAIT REPORTS：Kinetic and gait-statistics summary output Automatically summarizes kinetic and spatiotemporal gait parameters, including left/right limb comparison and gait-symmetry indices. Raw force curves and COP trajectories are integrated, and reports can be exported and archived for research and clinical records.

DOUBLE SUPPORT：Algorithmic separation of bilateral GRF to reconstruct natural gait During double support, a proprietary algorithm decomposes loading between the leading and trailing limbs. Measured and reconstructed data can be compared to obtain kinetic parameters for healthy and pathological gait under natural walking conditions.

COP ANALYSIS：Quantifies COP path, foot-load shifts and mediolateral tilt Outputs COP trajectories during single-support and stance phases; quantifies foot rotation, inversion/eversion and rollover mechanics for foot-disorder research, orthotic-insole evaluation and gait-asymmetry analysis.

COMPOSITION

The high-precision 3D instrumented treadmill system consists of a high-speed treadmill, a 3D force-measurement module, a data receiver and acquisition & analysis software.

ACQUISITION & ANALYSIS SOFTWARE

RECORDING & PLAYBACK：Records the complete mechanical dataset throughout the test. Timeline navigation, slow-motion playback and frame-by-frame analysis make it easy to identify critical events.

MONITORING：Acquires and displays treadmill incline, speed, acceleration and subject heart rate in real time,while dynamically showing system status. Incline, speed and acceleration can be adjusted quickly.

REAL-TIME CURVES：Supports high-frame-rate synchronous acquisition of six-component force/moment data (Fx, Fy, Fz, Mx, My, Mz) from multiple systems. Real-time multichannel curves enable continuous monitoring and comparison of individual and resultant force components.

SUBJECT INFO：Stores subject name, ID, sex, age, height, weight, test protocol, dominant limb and other metadata. The information is linked to the test dataset for traceability, grouping, comparison and batch analysis.

REAL-TIME DISPLAY：Real-time numerical, curve and graphical display of Fx, Fy, Fz, Mx, My,Mz and center of pressure (COP).

RECEIVER

CUSTOM SAMPLING RATE User-selectable 0-6400 Hz 

REAL-TIME DISPLAY Refresh rate >= 6400 Hz 

SYNCHRONIZED VIDEO >=8 network cameras 

ZEROING FUNCTION One-click and per-channel zero 

PRESSURE-MAPPING SYNC 16,384 active sensing elements

DATA SEGMENT EXPORT Select/export any time interval 

DATA RECORDING Project-file recording 

EXTERNAL TRIGGER 2 BNC sync trigger inputs 

ANALOG OUTPUT 6-channel BNC analog output

ADVANTAGES

HIGH-DYNAMIC RESPONSE：The force platform uses high-performance force sensors with a natural frequency up to 1 kHz. Combined with a uniform 6400 Hz sampling rate across the product line, it accurately captures rapidly changing dynamic forces and transient impact signals for sports analysis,gait research and impact testing.

FLEXIBLE SYSTEM INTEGRATION：An external amplifier provides analog-signal outputs. Ethernet data transmission, BNC synchronization and 6-channel analog outputs enable synchronization with high-speed cameras, EMG systems, motion-capture systems and other third-party devices for multimodal acquisition and real-time analysis.

MEASUREMENTACCURACY& STABILITY：The product line provides 0.2% FS overall accuracy covering nonlinearity, hysteresis and repeatability, with customizable Fx, Fy and Fz ranges. 24-bit resolution and IP65 protection support reliable, repeatable precision measurement in demanding environments.

SERVICES

CUSTOM SENSORS：Custom pressure sensors in different sizes and sensitivities for specific applications.

SOFTWARE SERVICES：Provides basic data-acquisition interfaces with open SDK and API access.

ALGORITHM & DATA：Basic data services are available; custom algorithms can be developed as required.

HARDWARE DESIGN：Matching hardware solutions can be designed for the corresponding sensor configuration.

APPLICATION AREAS