Water Injection Counterweight Dummy
The water injection counterweight dummy is a cutting-edge tool designed to simulate occupant behavior during automotive collisions, complying with ISO and SAE safety standards. By adjusting water volume, it replicates diverse body types and inertial forces, ensuring accurate crash test results.
Applicable Standards
- ISO/SAE Compliance: Aligns with global automotive safety protocols (ISO 20342, SAE J211) for validated test data.
- Customizable Configurations: Adapts to various body sizes and seating positions, meeting regional certification requirements.
Main Parameters
| Parameter | Specification |
|---|---|
| Dimensions | Adjustable to human proportions (170-190 cm height) |
| Weight Range | 60-120 kg (water-filled) |
| Sensors | Triaxial accelerometers, pressure sensors |
| Material | High-impact polymer, corrosion-resistant |
| Repeatability | ±2% weight accuracy, 10,000+ test cycles |
Working Principle
The dummy uses a modular water reservoir system to simulate passenger weight distribution. Water is injected to match target masses, while sensors capture real-time kinematic data (acceleration, force, displacement). A PLC controller ensures precise fluid regulation and automated data logging.
Test Principle
- Pre-Test Setup: Dummy is secured in vehicle seats with seatbelts, mimicking real-world posture.
- Crash Simulation: Tested at speeds up to 64 km/h, monitoring head injury criteria (HIC), chest compression, and femur load.
- Data Analysis: Post-test reports evaluate compliance with standards like Euro NCAP or IIHS, identifying design weaknesses.
Key Advantages
- Realism: Fluid dynamics mimic human tissue response during impact.
- Cost-Efficiency: Reusable design reduces reliance on disposable dummies.
- Versatility: Supports frontal, side, and rollover tests with interchangeable limbs.
This innovation enables automakers to optimize restraint systems and structural integrity, ultimately saving lives through safer vehicle designs.