4.4 Vision systems
Vision systems are machine vision
systems that differ relatively from
smart cameras, in that the camera
sensor and memory is placed on a
very small remote head and the
processor, the inputs/outputs and the
connection to the rest of the industrial
environment are placed in an element
of small dimensions, which can be
placed next to other automation
elements. One of the advantages of
such an artificial vision system, which
presents this technology with respect
to traditional smart cameras is that,
with a single process element, several
remote vision heads can be
connected, reducing the cost in vision
applications where multiple shots of
the same part are required.
that a sensor is needed to detect the
presence of an object. That means
we're looking for some kind of
proximity sensor (sometimes called
"presence sensors" or "object
detection sensors"). There are several
types of sensor technologies that can
detect the presence (or absence) of an
object: inductive, photoelectric,
capacitive, magnetic and ultrasound
sensors. It is also important to
consider that two basic questions
need to be answered that lead to
proper detection:
4.5 Sensor selection
An engine is chosen according to the
following features
For sensitized
For process parameter (e.g.
temperature, pressure, flow), the
presence of an object, the distance to
a target, or the position of a
mechanism? Let's say, for example,
What's going to be detected?
It is of great importance to know the
material of which it is constituted,
since based on this will be the sensory
technology to use, although
sometimes you can have more than
one sensory technology. In addition to