Vision systems check airbag ignition units

The German company BHV-Automation GmbH has developed an image processing system for the measurement of ignition initiator units for airbag gas generators. It measures the plug contacts and other parts of the units. The basic task of the test consists of determining and checking: the position of the plug contact tips, the torque angle of the tip unit, the gap distance of the riveting and the position/color and shape of the plug unit. The allowed percentage of incorrect measurement was defined as < 0.05% per ten thousand parts. All measured values are correct within 1/100th mm. For this particular application example, the system manages 15 types. A custom development project was executed regarding the measuring of the tips. BHV developed a threshold value adjustment process that allows the system to measure tips which differ very strongly in their reflectance and their surface qualities. For more information, go to: http://www.baslerweb.com/newsletter/beitrag_en_79365.html