Engineers and quality control supervisors engaged in mass production of mechanical and electrical components are constantly troubled by the limitations of manual abnormal noise inspection. Production lines are filled with continuous background noise, and inspectors rely solely on human hearing to identify faint abnormal sounds from motors, gears and micro actuators. Differences in hearing sensitivity and fatigue lead to frequent missed detections and false judgments across batches. Tiny irregular noises caused by assembly gaps, bearing abrasion and rotor imbalance easily slip through inspection, resulting in heavy after-sales complaints and brand reputation losses after defective products reach end customers. Manual listening cannot keep pace with high-speed automated production, and all judgment records rely on subjective notes without standardized traceable acoustic data, which fails to support process review, product certification and factory audit requirements. Multi-speed and multi-load NVH performance analysis requires third-party testing with long lead times, slowing new product iteration and raising recurring testing costs.

Our self-developed DC-TS-NVH abnormal noise detection system delivers an integrated intelligent acoustic-vibration testing solution for end-of-line mass production inspection and laboratory NVH R&D tuning. The full hardware and software framework integrates three core technologies: multi-channel synchronous signal acquisition, order tracking and AI voiceprint deep learning. It supports simultaneous signal capture via contact vibration transducers and high-fidelity microphones, and performs joint calculation based on kurtosis, impulse factor and sound pressure transient gradient parameters to separate production background noise from intrinsic product abnormal sound stably. The system reliably captures periodic and instantaneous faint anomalies including gear collision, minor bearing damage, electromagnetic whine and assembly friction noise. Compatible with silent booths, hemi-anechoic chambers and simple sound-insulated test cabins, the built-in standardized judgment model allows customized OK/NG threshold settings by product model. Complete test reports with time-frequency spectrum and fault source labels are generated automatically upon test completion, with encrypted local data storage and seamless MES factory system integration to realize fully unattended automatic inspection.

New energy drive and automotive component manufacturers across Singapore and ASEAN deploy DC-TS-NVH systems at production line terminals for full inspection of drive motors, reducers, water pumps and cooling fans. It automatically classifies fault types such as rotor unbalance, gear pitting and winding electromagnetic noise, filtering defective units in batches to avoid vehicle noise complaints after delivery. Home appliance and small motor factories adapt the system for fast offline screening of micro-motors, fans and compressors, with single-unit testing finished within seconds to match non-stop assembly line operation and drastically cut QC labor costs. Consumer electronics brands producing earphones, haptic motors and smart voice components capture micro-level abnormal noise to guarantee consistent listening experience for end users. Third-party SAC-accredited testing labs and internal R&D teams conduct noise reduction optimization experiments using the system, comparing acoustic-vibration curves of different vibration isolation and assembly schemes to accurately pinpoint NVH performance defects and shorten R&D tuning cycles.

We provide fully customized solutions instead of generic fixed packages, tailored to client production tact time, product dimension, test operating conditions and matched acoustic chamber layout. One-stop delivery covers multi-channel acquisition hardware, 3-axis vibration sensors, sound-insulated test fixtures, intelligent analysis software and automatic docking interfaces. Our technical engineers conduct on-site model training, threshold calibration and production line joint debugging, with full lifecycle support including algorithm iteration, hardware calibration and remote maintenance after handover. We have delivered complete testing solutions for dozens of leading electric drive, home appliance and consumer electronics manufacturers across Singapore and Southeast Asia. Digital, repeatable intelligent judgment replaces traditional manual listening to resolve core industry pain points such as missed detection, low efficiency and untraceable data, delivering stable acoustic-vibration testing capability to support intelligent quality control upgrading for regional manufacturing industries.