Sensors and vision systems help verify package quality.
Tactilus
An electronic tactile force and pressure indicating sensor allows users to monitor how force is distributed between any two contacting or mating surfaces in real time. Any application where contact pressure exists between 0.007 kg/cm2 and 141 kg/cm2 is a viable candidate for Tactilus technology. The system indicates precisely how surfaces deform and engage under stress and is useful as a confirmation of FE analysis. With aseptic packaging systems such as CAP/MAP, Tactilus aids in fulfilling GMP compliance by revealing weak spots, channels, and wrinkles at the sealing surface. Sensor Products Inc., East Hanover, NJ; 973/884-1755; www.sensorprod.com [3].
F210 Vision Sensor
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A high-speed vision sensor combines image acquisition in as fast as 1.4 milli-seconds with advanced measurement algorithms for faster measurement and inspection operations. The F210 can perform measurement cycles as fast as 3 milliseconds when used with the company�s F160-S2 double-speed camera. The system features the QUEST algorithm for OCR/OCV capability and new Edge Code technology for defect detection, position, and location capability. The Edge Code defect detector can be used for detecting precise defects of parts on a conveyor, like scratches on a sealing surface. The OCR/OCV capability can read and confirm lot codes on pill bottles. A fine matching algorithm enables detection of differences between a user-taught model and a live image, including fine defects on labels that less-accurate algorithms cannot catch. Omron Electronics LLC, Schaumburg, IL; 800/55-OMRON; www.info.omron.com [4].
iCheck Vision Appliance
An easy-to-use, prepackaged machine vision appliance is designed for installation and operation by manufacturing engineers with little or no previous machine vision experience. iCheck can be used in a range of product and assembly verification applications. These include detecting missing or incorrect products in a package; verifying that caps and safety seals are in place; verifying the presence, number, and size of holes or notches in machined parts; reading and verifying product bar codes; and detecting stains, cracks, or deformities on a surface. All required software is resident within the iCheck vision appliance. ipd, Billerica, MA; 978/670-2002; www.goipd.com [5].
Inductive Proximity Sensors
Two compact 4- and 5-mm inductive proximity sensors are designed for use with the ultraminiature M5 connectors. This sensor-and-connector combination is suitable for tight mounting applications. The sensors feature a supply voltage range of 10�30 V dc, a sensing distance of 1 mm, load current of 100 mA, and a bright and visible two-point output-state LED indicator. The switches incorporate the latest ASIC and flip-chip technology and are equipped with fully integrated short-circuit and reverse- polarity protection. Both sensors are encased in a rugged stainless steel housing that is 24 mm long. Baumer Electric, Southington, CT; 800/937-9336; www.baumerelectric.com [6].
