CEAT was tasked with coming up with a sensor that would count opaque objects in extremely hazardous conditions.
This object detection and counting system has been designed to operate in environments where objects, other than those of interest, interfere with typical sensing devices like proximity sensors, light curtains and ultrasonic devices.
This system is specifically design to detect highly opaque objects in environments which have slightly opaque to translucent objects (like water droplets or small streams of water) mixed with the objects of interest.
The Input Signal generated by the CEAT Optical Sensor is proportional to both size and Translucency. Translucent objects are attenuated, while highly opaque objects are amplified. The object’s size is also directly proportional to the signal level transmitted by the sensor. So the larger and more opaque an object the larger the level signal generated by the Optical Sensor.
The CEAT Optical Sensors has four independent ambient light (540nM) detection channels. A built-in light source can be used to maintain a specific light intensity or a specific average background signal level.
With a known, stable intensity level or background signal level (which ever best suits the process); objects passing through the sensor area will produce a repeatable signal proportional to the object’s size and translucency. Materials like water have a smaller signal per square area than objects like bottle caps, popsicle sticks or meats.
Additional, real-time analysis can be configured to further help discriminate the object(s) of interest from background noise and interference from objects and materials other than those of interest. This system can monitor and control up-to eight Optical Sensing processes simultaneously.
There are two methods of object detection, Absolute and Relative. Each Optical Sensor is configured to use one method or the other.