DMD Diver Helmet Mounted Display with Gemini multibeam sonar - Tritech

Diver Helmet Mounted Display with Gemini multibeam imaging sonar

The DMD system has been designed to provide divers with the ability to navigate and carry out inspections in zero visibility conditions.

Utilising the Gemini range of Multibeam imaging sonars allows the user to select the most suitable sonar for the type of operation required. The world’s smallest Multibeam imaging sonar, the MicronGemini, provides a basic navigation capability, allowing a diver to locate large structures or objects while working in zero visibility water.

Where a higher degree of resolution is required the diver can opt for the Gemini 720ik or Gemini 1200ik Multibeam imaging sonar, both of which provide increased range, resolution and field of view. These high specification Multibeam imaging sonars provide a diver with a high degree of confidence while working in zero visibility conditions and allow searches to be undertaken far more efficiently than using conventional search pattern techniques.

The DMD systems have been designed to be used with the Inodive accessory rail system, allowing for the DMD system to be used with an extensive range of dive masks and helmets. All of the Gemini sonars, when supplied with a DMD system, are built-up with an Inodive interface to allow for seamless installation onto the dive mask/helmet.

The DMD system has been designed to provide divers with the ability to navigate and carry out inspections in zero visibility conditions.

Utilising the Gemini range of Multibeam imaging sonars allows the user to select the most suitable sonar for the type of operation required. The world’s smallest Multibeam imaging sonar, the Micron Gemini provides a basic navigation capability, allowing a diver to locate large structures or objects while working in zero visibility water. Where a higher degree of resolution is required the diver can opt for the Gemini 720ik or Gemini 1200ik Multibeam imaging sonar, both of which provide increased range, resolution and field of view. These high specification Multibeam imaging sonars provide a diver with a high degree of confidence while working in zero visibility conditions and allow searches to be undertaken far more efficiently than using conventional search pattern techniques. The DMD systems have been designed to be used with the Inodive accessory rail system, allowing for the DMD system to be used with an extensive range of dive masks and helmets. All of the Gemini sonars, when supplied with a DMD system, are built-up with an Inodive interface to allow for seamless installation onto the dive mask/helmet.

Main features:

• Ideal for zero visibility environments
• Gemini Multibeam imaging sonar
• Compact, lightweight and portable
• Tethered and Untethered options
• Durable and robust design

All DMD systems comprise of 4 key elements:

• Monocle display
• Subsea computer
• Multibeam imaging sonar
• System and control

Power and control of the DMD system can either be through a tether connection to the surface, where the topside operator controls what the diver sees, or the diver can work autonomously with no need for a surface connection by utilising a diver battery pack and DMD hand controller.

• The tethered system (DMD-T) is intended primarily for surface air dive systems where the supplied tether connects the diver to the surface and control of the sonar is undertaken by the support team. The same DMD-T system can be used by scuba divers, where it’s acceptable to be attached to the surface by the tether.

• The untethered system (DMD-U) allows the diver to operate totally independent of a surface connection, with the diver themself taking control of the sonar operation. This is of particular benefit where a diver wishes to operate in a covert fashion or where there may have hazards that the tether could be snagged.

By using the DMD system, a diver has the ability to view the sonar image on the diver mounted monocle, allowing the diver to quickly and efficiently locate targets of interest. The DMD-U system allows the diver to adjust settings using a custom hand controller and record data of interest on the subsea computer, while the DMD-T system allows the support diver on the surface to make any necessary adjustments to the sonar settings and highlight any targets of interest for the diver to investigate.
The Inodive rail system simplifies the fitting and removal of the DMD system. This allows the sonar to be removed from the mask/helmet and attached to a Gemini sonar pistol grip where this may at times offer some advantage, such as difficult to reach areas or where a different sonar viewing angle may be beneficial.
The innovative Monocle design allows for it to be accurately positioned on the divers helmet/mask and yet it can also easily be lifted out of the divers view and later replaced back into the same position by the diver when it’s
required.