Vision Hardware Selection

Machine vision industrial lights are reliable products which provide constant, non-fluctuating power/light output. They are designed to be used 24/7, providing the best light conditions and machine vision lights are available in many colours to create extra contrast.

The machine vision lights have a long-life cycle and therefore the same light with the same specs and output can be purchased for many years. Machine vision lights have a great batch repeatability and minimal led characteristic variations between batches that could cause quality deviations.

Motion blur can cause the industrial camera to capture unsharp / blurry images. Unsharp images result in inaccurate measurements, bad fault detection or wrong classifications. Motion blur is caused by movement or vibration during the exposure time of the industrial camera. When the object moves for more than 0.5 pixel during the exposure time, the image will have motion blur.

This article explains how to read barcodes and DMC codes (Datamatrix codes) with the most cost-effective machine vision camera solution. Additionally, we clarify the difference between Barcodes and DMC codes by discussing the pros and cons. We also provide a formula that helps you to calculate the required resolution and give practical examples reading barcodes and DMC codes.

Global shutter is used for capturing moving objects, while rolling shutter is used for capturing still images. A rolling shutter camera is cheaper, especialy for resolutions above 1.6 Megapixel. A 12MP rolling shutter camera costs approx. 200 euro, while a 12MP global shutter costs approx. 1000 euro. A Global shutter has larger pixels, therefore a larger sensor as a rolling shutter camera. As a result, a global shutter camera is more light sensitive and produces sharper images.

You might have noticed that some of our cameras are marked as ‘GeT-Cameras Choice’. There are a few reasons why we recommend these cameras, like recommendation for new indesign, the newest image sensors and shorter lead times.

Gaspar van Elmbt, the managing director of GeT-Cameras, had planned to give a presentation about cost reducing vision hardware design at the UKIVA this month. However, due to the Covid’19 virus this event got cancelled. The organization of this event managed to provide the visitors with all the presentations, included ours, on the ‘presentation hub’.

Industrial machine vision cameras are reliable and robust, so must be the external triggering system.

When fast operation is needed, the trigger sensor needs to react very quickly. The trigger sensor will change the voltage (electricity) on the specified pins of the camera’s I/O connector.

This system works with the so-called rising edge or falling edge, voltage going from a low value to high (rising edge), or from high to low (falling edge).

This article will provide a deeper inside in what the benefits and downsides are of each type of machine vision camera interface, so you can select the right interface for your machine vision application. It has to be noted that GeT cameras only supplies USB 2.0, USB 3.0, GigE, 5GigE and 10GigE machine vision cameras and the article will mainly be focused on these five industrial machine vision interfaces. However, in the table below we have incorporated also other interfaces to make the overview of industrial machine vision camera interfaces complete.

Arm embedded platforms are very popular for embedded vision. Many of these platforms have a USB2, USB3 and or GigE ethernet port. Our USB3 and GigE Vision Cameras work with these ARM embedded platforms. The Raspberry Pi, that has a USB2 port, even works with our USB3 cameras on reduced frame-rate.

Daheng Imaging is familliar in the industrial polarized camera segment by implementing the Sony-IMX250MZR monochrome image-sensor. Recently the IMX264MZR has also been added to the portfolio. The Industrial polarization camera systems are able to capture information which a normal line or area industrial camera is not able to obtain. A polarization camera conducts a two-dimensional analysis. It measures both the degree and direction of the polarization of the light. As a result the final image has almost none reflections from external lightsources. A polarized camera is ideal for applications like the inspection of glossy products and transparent products.

USB3 Vision standard is an imaging interface standard for industrial USB3 vision cameras. The majority of camera manufacturers have already adopted this standard, and the number of compatible, accessories growing quickly. A big advantage of the USB3 interface is that, any of the PCs, laptops and smartphones have a USB 3.0 interface built in nowadays. In the field of vision technology, USB 3.0 is also replacing dated interfaces such as the FireWire, Cameralink and USB2.0.