About Door Explorer Sensors

Overview of the installation on the trawl gear

Spread Sensors Pro (PRP and Digital) and Door Explorer sensors can be mixed on a same installation.

Important: You cannot mix Spread Sensors Pro and Door Explorer sensors with A1 and Duplex sensors on a same door spread installation because they cannot communicate with each others.

Single trawl communication

Port Stbd Asks for answer
Answers
Sends data to the receiver (door spread distance, bearing, pitch and roll, depth...)
  • The port sensor (1) interrogates the starboard sensor (2) to know the distance between them (A). Then, it sends the distance to the receiver.

Twin trawl communication

PortStbd Asks for answer
Answers
Sends data to the receiver (door spread distance, bearing, pitch and roll, depth...)
  • The port sensor (1) interrogates the clump (2) and starboard sensors (3) to know the distance with each one. Then, it sends the two distances (yellow A, B) to the receiver.
  • The clump sensor (2) listens to the answer of the starboard sensor. Then, it sends the distance between them (blue A) to the receiver.

Triple trawl communication

PortStbd

Asks for answer

Answers
Sends data to the receiver (door spread distance, bearing, pitch and roll, depth...)
  • The port sensor (1) interrogates the port clump sensor (2), the starboard clump sensor (3) and the starboard sensor (4) to know the distance with each one. Then, it sends the three distances (yellow A, B, C) to the receiver.
  • The port clump sensor (2) listens to the answer of the starboard clump sensor. Then, it sends the distance between them (blue A) to the receiver.
  • The starboard clump sensor (3) listens to the answer of the starboard sensor. Then, it sends the distance between them (purple A) to the receiver.

Quadruple trawl communication

PortStbd

Asks for answer

Answers

Sends data to the receiver (door spread distance, bearing, pitch and roll, depth...)
  • The port sensor (1) interrogates the port clump sensor (2), the center clump sensor (3), the starboard clump sensor (4) and the starboard sensor (5) to know the distance with each one. Then, it sends the four distances (yellow A, B, C, D) to the receiver.
  • The port clump sensor (2) listens to the answer of the center clump sensor (3). Then, it sends the distance between them (blue A) to the receiver.
  • The center clump sensor (3) listens to the answer of the starboard clump sensor (4). Then, it sends the distance between them (purple A) to the receiver.
  • The starboard clump sensor (4) listens to the answer of the starboard sensor (5). Then, it sends the distance between them (gray A) to the receiver.