The machine vision system is one example of many automated systems witnessing advancement in the pharma industry. Automatic systems are creating new horizons in the life science industry and proving themselves to be a symbol of efficiency and quality in many areas of pharmaceuticals.
The main benefit of the machine vision system, among many, is that it minimizes the human error related to the personnel working in the process. Examples of machine vision where it is being applied include manufacturing, quality, and packaging, where they assist humans in performing the tasks.
Machine vision inspection technology is implemented in various stages of Pharma process manufacturing to increase efficiency, reduce error, and increase output, which are critical to the success of a pharma manufacturing process.
What is Machine Vision Inspection?
Machine vision inspection is an automatic system to perform vision-related applications. It consists of a sensing device and a software system. The sensing device detects the particular region of interest in the given sample, and the software performs the desired analysis or function on the image received from the sensing device.
The software system applies various algorithms to obtain a final decision based on user preferences set by the operator or production personnel.
Machine vision systems also consist of a display device, usually a monitor or something like that displays the current status of software. The object being inspected is displayed on the monitor with several tags indicating the status of the object being studied. Commonly, an object with a red tag is rejected, and an object with a green tag is accepted. Other color tags can also be used to indicate different statuses.
After processing the image from the software, the output ( in the form controller readable format) is sent to the central controller to activate the particular function in the machine. This is done so that a rejected object does not go into the accepted object and vice versa.
Vision inspection in Pharma
In the pharma industry, machine vision is used to detect the presence or absence of a specific object, such as
The presence of a tablet inside the blister cavity to mark it reject or pass, used in blister packaging machines
Presence of impurities in filled ampoule by detecting particles inside it, used inspection system for ampoule in the injectable department
Read the barcode or print on a finished package to verify the accurate and satisfactory printing, which is used to serve many purposes, such as product identification and track & trace system
Components
The machine vision system comprises multiple components that perform the required tasks, which are briefed below.
Lighting
Lighting is used to illuminate the target object to provide complete visibility to the object when the camera processes it. This is necessary to provide the required exposure to the sensing device to get a clear picture of the object.
Commonly, there are two configurations of lighting: continuous and intermittent.
The light is continuously lit in a continuous configuration, providing continuous illumination throughout the process.
In the intermediate configuration, the lighting operates an intermittent mechanism, i.e., lighting is ON when the camera processes the object, while lighting is OFF when the camera is not processing.
Imagine detector
The image detector consists of a camera and its various components. One of them is the camera's image lens, which converts the captured image into a form readable by the software. The camera captures the image and adjusts the essential parameters, such as noise and brightness.
Communication
The communication wires are used to connect different components of the vision system. It is critical because information carried out by other parts of the vision system is susceptible and can be lost with slight damage to the communication wire.
Software system
Software system is the hear...
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