This section aims to help you choose the correct Zivid camera based on the length, width, height of the Volume Of Interest (VOI), and the number of bins in the scene.
Bins with the standardized size used for bin picking are Euro Containers and Standard Plastic Totes.
It is also common to use steel mesh cages, heavy-duty steel bins, and wooden crates, and sometimes, picking is done straight from a pallet.
Choose the size of the bin in your scene.
Our recommendation for the camera and mounting distance (to bin top), i.e., robot clearance, for your application is in the same row.
Choose whether you have an on-arm or a stationary camera.
Find the camera model that suits your application based on the number and size of Euro Containers in your scene and on bin height.
Our recommended capture distance (to bin top) is in the same row.
Euro Container(s)
Bin length
Bin width
Bin height
Camera
To bin top
To bin bottom
One Small
400
300
70 - 320
Z2+ MR60
500
570 - 820
One Medium or two Small
600
400
70 - 320
Z2+ MR60
600
670 - 920
One Large or two Medium
800
600
70 - 520
Z2+ LR110
800
870 - 1320
Two Large
1200
800
70 - 520
Z2+ LR110
1200
1270 - 1720
You can also check out the Complete option analysis below to find the right camera for your application.
Choose the number and size of Euro Containers in your scene.
Our recommendation for the camera and mounting distance (to bin top), i.e., robot clearance, for your application is in the same row.
Bin length
Bin width
To bin top
Bin height
Camera
To bin bottom
400
300
800
70 - 320
Z2+ MR130
870 - 1120
If you have different robot clearance requirements, check out the Complete option analysis below to find the right camera for your application.
The camera has to be mounted on a robot in such a position that it can see the entire length and width of the bin top during capture.
At this position, the gripper needs to be entirely outside of the bin.
The camera also has to be mounted far enough away from the gripper tip so it does not collide with the bin edges during picking.
This should hold even when picking at an angle, e.g., 45 degrees.
Stationary mounting
The robot must have enough clearance to move between the camera and the bin freely without colliding with the camera.
The total distance of clearance to the bin top depends on several elements.
The first one is the total gripper length.
The gripper must be entirely above the bin before entering the bin.
The second element is the largest height of the object in the pose the robot is taking it out from the bin.
If the robot picks the object up using, e.g., a mechanical gripper, the object will be suspended from the gripper.
The robot must move the object above and across the bin edge, not colliding with the bin’s edge during robot motion.
Lastly, there is the camera size and some safety margin.
Spatial resolution
Spatial resolution is an important factor when selecting the distance of imaging.
To find spatial resolution requirements, we need to consider the smallest object feature to be seen at the largest desired distance of imaging.
As an exercise, let us take a cube of 1 cm x 1 cm in size.
A spatial resolution of 1 mm gives 8-10 points in each dimension, which is 64-100 points.
This number of points should be sufficient to detect the object from the point cloud and estimate its pick pose.
To be safe, we recommend a spatial resolution of 0.5 - 0.8 mm for most objects, and 0.25 - 0.5 for small objects and objects with fine details / small features.