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B I O M E C H A N I C S W O R K L O A D P R O D U C T S
4-SENSOR GAIT ANALYSIS MODULELICENSED FOR SHOE-FITTING
Te c h n o l o g y O v e r v i e wS TAT S p o r t s | M o t u s
J u n e 2 0 1 9
QB’
s,KI
CKER
SFI
ELD
ERS,
BOW
LERS
SPIK
ES,
SERV
ES
H A R D W A R E S P E C I F I C AT I O N S
I N D U S T R Y ’ S S M A L L E S TI N E R T I A L S E N S O R
BATTERY LIFE (120 mAh Rechargeable Li-Po)
8 hours for Event Trigger Mode3 hours for Logging Mode4.5 hours for Streaming Mode6 hours Hybrid Event Trigger/Streaming Mode
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DATA SAMPLING MODES
Logging Mode: Programatically log 6-axis data sampled at 1000 Hz.Event Trigger Mode: Stores 5 seconds of 6-axis data sampled at 1000 Hz after event detection algorithm triggers.Streaming Mode: Sample and stream 6-axis data at 100 Hz in “real-time” with 30 ms latency
KEY FRAME IDENTIFICATIONPoint of Contact (i.e. ball release, ball contact)Point of Movement Initiation (i.e. load, peak back-swing).Local/Global Maximum/Minimum Detection
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W O R K L O A D C L O U D S E R V I C E S
WORKLOAD MEASURESDaily Workload (Exponential sum of Torque, Veloc-ity, etc.)Acute Workload: Rolling 7 day average of daily workloadChronic Workload: Rolling 28 day average of daily workloadAcute:chronic Ratio (ACR): Acute workload divided by chronic workload
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WORKLOAD SIMULATORProject 28-days of future workloads that increase chronic workload and limit high ACR exposure.Designate pre-game warmup workload routines.Simulate game-day workload and effect on ACR.Auto-generate workload limits on game-dayConvert game-day workload limits to actionable activity limits (after warmup workloads are sub-tracted).
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C U R R E N T P H Y S I C S E N G I N E A R C H I T E C T U R E
x,y,z Acc
x,y,z Gyro
x,y,z Acc
x,y,z Gyro
SENSOR FUSION& CALIBRATION
INVERSE DYNAMICSPHYSICS ENGINE
ELBOW VALGUS TORQUEEVENT DETECTION
FULL SAMPLING
ELBOW TORQUE WORKFLOW
P R O P O S E D A R C H I T E C T U R E
ELBOW TORQUE WORKFLOW
1 Capture Baseline of Full-Sampled Data 2 Train Neural Net for Torque w/ Sensor Data
STANDARD PROGRAM TRIGGER FW VIA TENSORFLOW INTEGRATION
3 Load Player-Specific Models on New FW
Requires FW re-write to handle flash memory blocks and peak detection after event detection.Requires creation of integer based math (not float).Requires creation of BLE Characteristic of count, peak torque, and arrays for APEX compatability