This integrated single-station EoL test solution enables automotive HVAC air vent suppliers to perform NVH (noise/anomalous sound), motor electrical testing, and vane presence detection in a single inspection step, helping to improve overall test efficiency and reduce labor dependency.

Modern automotive HVAC air vent assemblies increasingly integrate multiple drive motors, multi-row vanes (louvers), and smart features such as automatic airflow control and voice interaction. As a result, upstream process variation or assembly defects can translate directly into vehicle-level concerns-typically perceived as anomalous sound, buzz/squeak/rattle (BSR), airflow direction mismatch, or reduced airflow caused by missing/misassembled vanes.

To reduce rework and prevent customer complaints, suppliers increasingly require 100% end-of-line (EoL) testing on the production line, covering NVH (noise/anomalous sound), motor electrical testing, and vane presence detection.

CRYSOUND Single-Station EoL Test Solution

CRYSOUND's automotive HVAC air vent EoL test solution enables customers to perform single-station, 100% testing of noise/anomalous sound, motor electrical testing, and vane presence detection.

The solution integrates CRYSOUND's in-house hardware and software, CRY3203-S01 measurement microphone set, SonoDAQ, CRY7869 acoustic test box, and OpenTest. And it combines electroacoustic measurement with anomalous sound analysis (sound quality and AI-based algorithms) to identify anomalous sound issues that FFT and Leq may miss. It also integrates motor electrical testing and vane presence detection, enabling one-time clamping and a single OK/NG decision within the same sound-insulated EoL station.

Customer Results: Efficiency, Labor, and Quality Gains

1. Replaced manual listening with machine-based detection, enabling unified criteria with quantitative, traceable results.
2. One fixture, three test positions: supports parallel or mixed testing of left/center/right dashboard air vents, improving efficiency by >100%.
3. Variant support via fixture changeover: reuse the same test station across different products, reducing repeated capital investment.
4. One-operator, one-click inspection: a single line can save 1-2 long-term operators.

Typical Target Users

This solution is designed for suppliers of motorized air vents and other motor-driven interior components,such as Valeo S.A.,Ningbo Joysonquin Automotive Systems Co., Ltd. and Jiangsu Xinquan Automotive Trim Co., Ltd.

Main Hardware and Software Configuration

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