Machine-Vision GigE Camera in Pharmacy Automation

The Prosilica GC1020C camera fulfills three functions - Read barcodes - Check the position - Provide real-time feedback for imaging and control-software that meters the actual dispensing process by counting pills out of the canisters.

Photo 1: DOSIS front cabinet showing the 60 pill canisters (left) - Pills on ramp inside a canister, photo taken with the Prosilica GC1020C digital camera (right)
(PresseBox) ( München, )
Manchac Technologies designs and develops advanced pharmacy automation products aimed at long-term care, retail and assisted-living facilities. Automation was only recently introduced to the pharmaceutical industry in order to improve on the accuracy, accountability and productivity of prescription fulfillment, while conforming with industry standards.

DOSIS® - compact machine vision solution
Manchac’s DOSIS is a machine that uses computer vision to count pills and package them into bubble-pack containers (blister cards). DOSIS is capable of dispensing up to 60 different solid oral medications at a time. The system is driven by an off-the-shelf PC running a Linux operating system.
Pills are loaded manually into canisters in the front of the machine (see picture 1). DOSIS scans the canisters to determine the location of each medication. The pharmacy’s software system sends prescriptions to DOSIS, which automatically dispenses pills into 30-day blister cards, seals and patient labels them.

Inside DOSIS
DOSIS incorporates the XGA resolution (1024x768) Prosilica GC1020C color camera with a GigE Vision compliant interface. Manchac chose the GC1020C for its ultra-compact size (33x46x38mm), excellent image quality, and Software Development Kit for Linux.
The GC1020C is fitted with a Fujinon DF6HA-1B (1:1.2/6mm) lens and mounted on to a backplane that is indexed to the 60 different medication canisters locations within the device. The camera fulfills three functions within the system:
1. Read bar codes to verify the position of each drug canister.
2. Check the positioning of the end-of-arm tooling engagement into the pill canisters for medication dispensing.
3. Provide real-time feedback for Manchac’s imaging and control software that meters the actual dispensing process by counting pills out of the canisters. (see photo 1)

Because of space constraints, the system uses a custom-designed light ring mounted around the lens of the camera to highlight specific areas of importance to the system.
The camera images at 30 frames per second and uses a 1024x288 Region of Interest Read Out (ROI) setting to define a rectangular sub-region of the image reducing the image data to be processed. Other settings, including exposure and gain, are set programmatically.
Control and Image analysis for all functions is done by Manchac’s proprietary software and algorithms. The software was designed in C programming language using the Prosilica SDK for Linux.



Link: Prosilica GC1020C
http://www.rauscher.de/...


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