Notus Electronics Ltd. (Notus) has long provided wireless trawl monitoring systems with unique advantages. Continuing this tradition, Notus has released a new Trawl Alignment Sensor. Notus has always provided a precise alignment of the trawl doors (i.e. by wirelessly monitoring the trawl warp lengths).
Continuing this tradition, Notus has released a new Trawl Alignment Sensor. Notus has always provided a precise alignment of the trawl doors (i.e. by wirelessly monitoring the trawl warp lengths). The Trawl Alignment Sensor now provides the alignment and adjustment behind the doors.
The Trawl Alignment Sensor installs on the middle of the headline and communicates to sensors on the doors. For current customers, this means that no additional door sensors are needed. As Notus sensors are omnidirectional (360I0;) one sensor on the headline can communicate to sensors on the doors without being aligned perfectly.
The following distances are calculated: from the starboard door to the center of the headline and from the port door to the center of the headline. Subtracting these two distances provides an adjustment to align the trawl. In addition, the trawl angles are calculated.
When currents push the trawl to one side, there may be an adjustment needed to align the wing ends. The Trawl Alignment Sensor provides this adjustment. This is also critical information when turning to ascertain the shape of the net. Trawl angles are important in ensuring the gear is rigged correctly to provide the proper herding effect for the fish.
The Trawl Alignment Sensor has been successfully installed on a deep water vessel in Spain and in the USA.
