Preguntas frecuentes sobre las cámaras de visión artificial

Machine vision cameras are used for image recording in 2D image processing applications. The images are transferred to a machine vision controller via a 1-Gigabit Ethernet interface. The captured images are then analyzed with image processing software to identify e.g. errors and irregularities in production processes.

The use depends on the application requirements. Factors such as resolution, speed and evaluation times must be taken into account. Even in applications with multiple cameras, the advantage is that up to 16 devices can be connected to a single machine vision controller. When installation space is limited, the compact format of machine vision cameras is a clear advantage.

A 24 MP machine vision camera is used in applications that require very high resolution and detail, such as the inspection of quality features in the electrical industry or surveying tasks.

Monochrome cameras are used for applications where grayscale and brightness differences are sufficient for image evaluation.

Color cameras offer the possibility of color differentiation. They are typically used where it is beneficial to have the most realistic image possible as seen by humans. This is the case, for example, when checking printed products or the cable assignment of plugs.

Global and rolling shutter are two different exposure methods during image capture. With the global shutter, all pixels in the sensor are exposed and read out simultaneously; with the rolling shutter, the individual lines are exposed and read out with a time offset.

Learn more about global and rolling shutter

The images are analyzed and evaluated using image processing algorithms using image processing software pre-installed on a machine vision controller.

When aligning the camera, make sure that the object plane is aligned as parallel to the camera as possible. This is best achieved with the right mounting technology.

Filters consist of special materials or coatings that absorb, reflect or pass through certain wavelengths of light. By filtering out unwanted parts of light, filters improve image quality and make it possible to better recognize certain details or properties of objects.

The interface for the machine vision cameras is Gigabit Ethernet (GigE). Power over Ethernet (PoE) is also possible with data transfer.

Gigabit Ethernet (GigE) is an Ethernet technology that enables data transfer rates of up to 1 Gigabit per second (1 Gbps).

Learn more about the interfaces

The requirements of the application are of great importance when selecting the right illumination. Different lighting positions highlight different structures due to changing contrasts and make them more or less visible.

The shape of the object is also decisive for the light reflection back to the camera.

To the illumination technology

It is also possible to connect the machine vision camera via a cable using PoE (Power over Ethernet), which means that both power supply and data transfer take place via a single connection.

The machine vision camera can process signals and start image recording with the aid of an external hardware trigger.

The following resolutions for monochrome and color cameras are available in the machine vision camera portfolio:

• 1.6 MP
• 5 MP
• 12 MP
• 24 MP

To the portfolio

A number of criteria must be taken into account when selecting the lens, such as thread connection, object size, camera distance, desired resolution, sensor size, pixel size, etc. The vision calculator is available to help you select the right lens.

To the vision calculator

Connection cables of 5 m and 10 m are available for power supply, while connection cables of 2 m, 5 m, 10 m or 30 m are available for data transfer.

The machine vision cameras are characterized by their robust design and durability and are therefore suitable for use on robots. Depending on the application, robot-compatible cables are also listed in the portfolio.

All models of the BBVK machine vision cameras have the same compact housing of 29 × 29 × 45 mm.

The machine vision cameras can also be used without wenglor machine vision controllers. The interface of the machine vision camera to the industrial PC is Gigabit Ethernet (GigE) with the standard GigE Vision.