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QC system
KLIPPEL QC can meet the daily testing requirements of the production line, such as some special tests in the mass production stage or trial production stage. The QC system is a modular system, which is easy to implement a cost-effective test solution, suitable for all types of audio equipment, such as Transducers (micro speakers, woofers, tweeters), passive systems (speakers, headphones), and active systems (audio systems, tablets, smartphones, car audio, etc.). Compared to KLIPPEL RnD systems, QC systems It hides the complex physical characteristics behind the product, but instead presents the intuitive and simple user interface to the end user, providing the test results necessary for manufacturing.
The QC system can not only accurately and reliably detect defective units on the production line, even in a noisy production line environment, but also with the ultimate goal of increasing production. The online test system provides very valuable judgment information for finding the problem. Root cause and solve the problem as soon as possible. Operators on the production line only need to visually inspect the defective unit and find valuable diagnostic information for production process control or feedback to R & D engineers for future product development.
● Basic version
The QC basic system provides daily most frequent testing functions for fast testing:
● Standard Edition
main feature
Ultra-fast testing under physical limits
Ultra-sensitive Rub & Buzz detection in time domain
Environmental noise monitoring
Simple calculation of upper and lower limits, level upper / lower limit, import of upper and lower limits
Automatic gold unit screening
Easy test management and synchronization
Customizable test sequence
Includes universal digital I / O for easy integration into production lines
Production Line Index (Cpk, Ppk)
Production Process Control Rules (Nelson / Weco)
Yield and single value results statistics
Test engineer / operator with different access rights
Automatic detection of power amplifier gain
Multilingual user interface (English, Chinese, German, etc.)
Rugged hardware, 19 ”rack
Integrated voltage, current sensor (50 A, 200 V)
● Optional option: Super Hearing Technology (MHT)
A typical problem on the production line is how to deal with the impact of acceptable distortion symptoms in the tested product on the test results, such as some economical products. Due to the masking effect, some high-frequency signal components usually reduce the detection of Rub & Buzz defects. Sensitivity. Using the highly similar symptom performance of consecutive batches of products in the production process, an adaptive system is used to model the conventional distortion produced by the good product unit. The active elimination of conventional distortion signal components can reveal even the very Weak defect symptoms; if this active elimination feature is not enabled, usually these weak defect symptoms are completely masked by conventional distortions. Although these weak defects appear inaudible during production testing, but with product use Over time, these defects become worse and worse, and directly cause serious damage to the final product.
● Optional option: production line noise immunity (PNI)
The production line test uses a second microphone to monitor the environmental noise of the production line. Once the speaker test result is disturbed by the environmental noise, the system automatically determines the validity of the result and performs automatic repeat testing if necessary. Robust detection technology ensures reliable detection of abnormal sound of the product .