Success Story – Kleinstobjekte zählen mit einer Zeilenkamera

Success Story

Count­ing of min­i­mal objects by using a line-scan camera

Def­i­n­i­tion of a project

Def­i­n­i­tion of a project In an appli­ca­tion round objects with a diam­e­ter of 400μm should be count­ed. The objects ver­ti­cal­ly fall through a glass tube at a speed of approx. 2,5m/s and land in a prod­uct there.

An already exist­ing sys­tem has count­ed the objects by means of pho­to sen­sors. Here inac­cu­ra­cies occur the objects iso­lat­ed jump back into the glass tube. The cause for that is dis­ad­van­ta­geous strik­ing in the prod­uct. In that case the exist­ing pho­to sen­sor sys­tem counts the object sev­er­al times.

Method of res­o­lu­tion of image processing

An image pro­cess­ing sys­tem with a line-scan cam­era should solve the prob­lem. By the spe­cial adjust­ment of the cam­era the image pro­cess­ing sys­tem makes it pos­si­ble to deter­mine the fall direc­tion of the objects only with one camera.

By that the real round object is reg­is­tered as inclined oval object. On the basis of the incli­na­tion of the object it becomes pos­si­ble to deter­mine the fall direc­tion. In that case jump­ing objects are real­ized as such and are not counted.

Addi­tion­al advantages

Besides the con­sid­er­ably increased mea­sure­ment accu­ra­cy the image pro­cess­ing sys­tem offers fur­ther inter­est­ing advan­tages com­pared with a „blind“ sys­tem. The reg­is­tered objects are already dis­played visu­al­ly dur­ing the process for the oper­at­ing staff. By that the response time for fail­ures is con­sid­er­ably short­ened. Fur­ther­more addi­tion­al mon­i­tor­ing is pos­si­ble. For exam­ple the size of the objects could be mea­sured in order to rec­og­nize devi­a­tions in speed.

Pos­si­ble upgrad­ing variants

By that sys­tem also small­er and faster objects can be rec­og­nized. The com­mu­ni­ca­tion with oth­er con­trol sys­tems is pos­si­ble via TCP/IP or dig­i­tal IOs.

Flex­i­ble con­fig­u­ra­tion based on experience

The team of Qual­i­ty Automa­tion GmbH resorts to great expe­ri­ence in the field of image pro­cess­ing. This enables a com­pre­hen­sive advi­so­ry ser­vice and a flex­i­ble inte­gra­tion of the sys­tems at the customer.

Contact Person
Michael Lambertz
Dipl.-Ing. Michael Lambertz
Software Engineer
Specializations: Control Engineering, Machine Vision
Our philosophy

Only if our systems are integrated at the customer completely they develop their entire performance potential. Therefore it is important for us that our customers are integrated in the process from the very first day of the project carry out. Communication is about it the most important connecting part between us and our customers.

Our customer targets
  • Maximum production efficiency and quality
  • Stable industrial processes
  • Well trained personal
  • Low service costs
  • Most favourable conditions
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