Sectors

Logistics

Palet Controlis a Modular machine vision system inspects pallets and pallet accessories as rubber knobs, thus making sure only fully functional pallets are put into service.

Warehouses or transport plants that have a greater degree of automation day by day, with the aim of 100% autonomous management, are possible thanks to the automation of the visual processes of control, traceability and handling of products through artificial vision.

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Completeness and defects control on pallets

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DPM code reading

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Code reading

Automation and traceability control through artificial vision. Two substations oriented towards reading the most commonly used industrial codes: Datamatrix (2D data matrix) and barcodes (1D).

Part of the functions of a company's logistics department focuses on the careful control of the movement of products. With this, traceability and consequently artificial vision acquire an added value in any industrial process.

To establish this control it is essential to integrate a process of reading and storing the data relating to each product in a reliable and automated way. In order to achieve this objective, a vision system is implemented which offers a high efficiency reading at not at all negligible speeds (around one hundred readings per second).

In this case, the implementation of two independent substations enables the reading of the two most commonly used industrial codes, the datamatrix codes (2D data matrix) and bar codes (1D).

Sample of most commonly used industry codes

The main advantages of this solution are the unalterability of the detection and reading of the code as it is exposed to changes caused by the variation of the scale, the rotation of the object and even the light adulteration of the environment.

Moreover, during the tests, both codes projected in a mirror for later reading or even partially covered or destroyed were reliably identified, making it possible to give the solution a high degree of robustness. In addition, the application is able to return a coefficient corresponding to the quality of the printing of the code from which a minimum value can be established to guarantee the minimum quality required.

DM reading in adverse conditions

Configuration modes:

Using a teach-in mode, the application allows the user to read a sample code automatically. Subsequently, the parameters that have made reading possible are kept and stored in a file for possible later use. On the other hand, there is the possibility of manual configuration without sacrificing the customization and optimization of the desired solution.

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Code reading on different control planes

Artificial vision solution for reading codes in boxes where precise lens control is required to control different planes due to height variability.

Artificial vision solution for reading codes in boxes where precise lens control is required to control different planes due to height variability.

An EVO Tracer camera from the manufacturer SVS is used to decode the code. This camera is the first one in the industrial sector equipped with the Micro-4/3" standard allowing the user complete control via software of zoom, focus and aperture.

Commonly in artificial vision, lenses with fixed focal lengths are used, absorbing a reduced depth of field, making the task of decoding codes in different control planes impossible.

Tracer Codes

To determine which control plane to inspect, a non-contact distance measurement sensor, LDM 41, is used. Once the data is acquired, the lens configuration is software modified within milliseconds to keep the control plane focused.

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Code reading on palletized products on European pallets

Artificial vision solution for reading 1D codes on European pallets. This need becomes essential due to the upward trend presented by the presence of traceability in the industrial sector.

Artificial vision solution for reading 1D codes on products palletised on European pallets. This need becomes essential due to the upward trend presented by the importance of traceability in the industrial sector.

The system is responsible for reading, verifying and recording the data printed on the codes located on the palletized products, a process that must be totally reliable in order to establish logistical control over the products produced.

To carry out this application requires the integration of devices capable of overcoming all the complications presented. In this case, the most noteworthy are related to the size of the elements involved.

Code reading on palletized products; European pallet

So far the main Achilles tendon has been the size of the pallet itself, with a dimensioning of 1200x800 mm, implies a great variability in the location of the product in the 3 dimensions.

On the other hand, it is also important to take into account the current regulations governing the format of the labels and codes used in the logistics environment and especially in palletised products. This regulation establishes the content of the labels and, what affects us more directly, the size of the barcode.

barcode reading

The label must include information about the company and the product in the two formats: barcode and human readable code, all integrated in the established size.

In short, the system is capable of covering the field of view and depth of field stipulated indirectly by the pallet size and orientation of the pallet, as well as providing sufficient resolution to ensure that the code is read.

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Palletizing of boxes

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