Vision sensors: new horizons

CONTROLS IN LINE Better performance, supplementary functionality and a broader range of models: Omron is launching FQ2, the new version of the FQ vision sensor, capable of tackling the most complex inspection and traceability applications.

The latest version of the FQ2 sensor developed by Omron combines videocamera and illuminator in a single compact case, equipped with processing power, in such a way eliminating the need for a separate controller and facilitating assembly even in confined spaces. Its particularly high performance is due to the fact that the FQ2 supports all the normal Omron vision system control algorithms and image filters, including shape search, color control, character recognition (OCR), scanning and verification of 2D codes and barcodes. For one example, the Omron Shape Search II algorithm performs a highly stable and reliable scan for shapes at high speed, identifying object position and rotation up to 360°, even when objects in the field of vision overlap. It is also capable of detecting up to 32 object types within the same image, enabling high speed inspection of groups of articles.

An added bonus of the new device in terms of effectiveness derives from Omron’s exclusive OCR technology: a technology that enables stable recognition and verification of even smeared or distorted characters and does not require specific settings to compensate for contrast or positioning. The large integrated lexicon includes more than 80 different types of characters (the most commonly used ones), and printing defects like blur or distortion, with different sizes and backgrounds.
FQ2 can be quickly programmed using a dedicated PC software or the TouchFinder console, which also performs battery-powered local monitoring, thus enabling on-site programming and continuous sensor monitoring.

Many models. In order to guarantee the best possible image detection, models are available with resolutions ranging from 360,000 pixels to 1.3 million. FQ2 can perform up to 32 simultaneous measurements, controlling more than 5000 pieces/min. Furthermore, considering the resolutions available, and since the sensor can measure rotation angles and other positioning information, FQ2 can also be used in pick&place applications.
Such a wide range enables users to identify the model with the necessary functions for their own specific requirements, simply by defining the desired measurement range and installation distance. Moreover, sensors are available with integrated lenses for scanning objects between 7 and 300 mm from a distance of up to 1 m, in addition to quadrangular versions that guarantee a wide scanning field, even when the sensor is mounted near the inspected object. The Omron range also includes FQ2 vision sensors with C-mount lenses, for detection distances over 1 m.