1. Function and Application
The True Body Weight Ingress Egress Tester is an advanced test system designed to simulate realistic occupant entry and exit movements for evaluating complete seating systems or individual components.
It assesses durability, wear, and deformation of seat coverings, foams, and mechanical structures under repeated ingress and egress cycles.
Additionally, it can be used to evaluate the durability of occupant clothing through realistic interaction with seat surfaces.
This tester replicates human motion using servo-electric and pneumatic actuation, allowing precise control of seat interaction forces, angles, and motion sequences to produce highly repeatable, life-like results.
2. Applicable Test Standards
SAE J826 – Devices for Use in Defining and Measuring Vehicle Seating Accommodation
SAE J1454 – Procedure for Evaluating Automotive Seat System Wear and Durability
OEM / Internal Automotive Standards – Applicable for seat ingress/egress durability evaluation
Custom Motion Sequences – Programmable per manufacturer test protocols
3. Technical Specifications
| Item | Specification |
|---|---|
| Number of Motion Axes | 4 servo-electric motor-driven axes + 3 pneumatic functions |
| Motion Capabilities | In & Out, Right & Left, Up & Down, Rotation, Free Weight Drop & Recapture, Independent Leg Activation |
| Free Body Weight Range | Adjustable from 35 kg to 100 kg |
| Free Weight Function | Allows the dummy to float vertically under true body weight; maintains active rotation and leg motion |
| Control System | Servo-driven with pneumatic latch pin for switching between powered and free-floating motion |
| Motion Synchronization | Any or all motions can be performed concurrently or in sequence |
| Programming Interface | Custom motion sequence programming for realistic ingress/egress cycles |
| Evaluation Method | Visual inspection for wear, deformation, and durability of seat system components |
| Power Requirements | 220–240 V.A.C. (single phase) with compressed air supply (approx. 80 PSI) |
4. Features and Advantages
True-to-Life Motion Simulation: Replicates realistic human ingress and egress movements with natural inertia and dynamic loading.
Adjustable Body Weight System: Simulates occupants from 35 kg to 100 kg for various seat and user conditions.
Independent Motion Control: Each motion axis and pneumatic function can be operated simultaneously or in sequence.
Free Weight Drop & Recapture: Provides natural weight impact on the seat for accurate fatigue and wear analysis.
Enhanced Test Realism: Unlike robotic systems that rely solely on force feedback, this tester includes the dynamic effects of inertia, ensuring authentic real-world motion characteristics.
Customizable Programming: Motion sequences can be tailored for different seat designs, vehicles, or test protocols.
Durability & Versatility: Suitable for automotive seats, aircraft seating, office chairs, and other seating systems.
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