Biomimetic Electric Sensing Technology: Subsea Imaging Sensors for ROVs, AUVs & Subsea Robotic Platforms

Compact Subsea Electric Sensor Released by ELWAVE

ELWAVE introduces the TETRAPULSE ESENSE 300 a subsea electric sensor which uses bio-inspired patented CEDAR technology to detect, locate, and classify subsea targets By Sarah Simpson / 02 May 2024
Compact Subsea Electric Sensor Released by ELWAVE
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ELWAVE has released the TETRAPULSE ESENSE 300, a compact subsea electric sensor that uses CEDAR (Controlled Electric Detection And Ranging) patented technology to detect plastic and metallic objects, even in high turbidity water with no light, much like an ‘electric camera’.

CEDAR is bio-inspired by the active electrolocation perception mode of some tropical fishes. By generating a low-frequency AC electric field, CEDAR is able to detect objects in the near vicinity that cause changes in current intensity. These disturbances can be measured to simultaneously detect, locate and classify subsea targets.

The TETRAPULSE ESENSE 300 is suitable for a wide range of subsea platforms including AUVs, ROVs, and subsea crawlers. Capable of detecting both metal and non-metallic targets, the sensor can also identify non-ferrous materials and targets buried 1-2 meters beneath the seafloor.

Technical Specifications

Array configuration2 to 4 electrodes
Operational frequency range100Hz-25kHz
Maximum emitted signal2 Amps / 24V

Applications include inspection of critical marine infrastructure, cable and pipeline survey, marine archaeology and environmental survey, as well as military use within mine hunting operations, UXO surveys, and seabed warfare.

Modular and lightweight, with low power consumption, the TETRAPULSE ESENSE 300 features selective EM field frequencies, between 100Hz to 25Khz, and ultra-high sensitivity. The advanced underwater sensor also enables data visualisation and output to 3rd survey software in real-time, as well as being compatible with real-time data processing and export to 3rd party post-processing and GIS software.

Mechanical Specifications

POD dimensions450mm * Ø145mm
POD weight in air / water6Kg / 1 Kg
Electrode dimensions120mm * Ø90mm
Electrode weight in air / water0.85Kg / 0.35Kg
POD to electrode cable length options1.5 to 7m on demand
MaterialAluminium
Electrode’s connectors options (all SubConn)Straight or right angle
Depth rating300m

Interfaces Specifications

SerialRS232
Ethernet10/100 Mbits, UDP/TCP (client / server)
Ctrl/CmdMINI1 protocol
Maximum data acquisition rate100Hz
Real time data outputNMEA UDP for 3rd party georeferenced data visualisation
Internal data storageSD card
Power supply / consumption20 – 48 VDC / < 70 W

TETRAPULSE is particularly suited to Micro/Mini ROVs and Observation-class ROVs, excelling at mine identification, including the shape and size of objects as well as the material type: metallic/non-metallic, ferrous/non-ferrous, plastic or composite.

To learn more, contact ELWAVE: Visit Website Send Message View Supplier Profile
Posted by Sarah Simpson Specialising in digital copy Sarah is an experienced copywriter and researcher. Working with Unmanned Systems Technology Sarah has developed a passion for sourcing unique digital content and a talent for writing about the latest technical innovations in the unmanned sector. Connect & Contact