AHRS ISM3D


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Video ISM3D seaView software demo

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The ISM3D is a highly accurate underwater Attitude & Heading Reference System.

The ISM3D utilises high grade MEMS based Accelerometers, Angular Rate Gyroscopes and Magnetometers all of which feed into an advanced fusion engine driven by a dual core micro-processor.

The unit provides Heading to ±0.5° of local Magnetic North with Pitch and Roll to ±0.05° accuracy.

Provided in a Titanium housing, depth rated to 6,000 meters, with a length of 65mm – the ISM3D sets a new standard in size, durability and capability.

Also available in a Delrin Housing depth rated to 1,000 meters or as an OEM system.

Quick facts:

±0.5° Heading Accuracy

±0.05° Pitch & Roll Accuracy

Software to View, Log & Configure

Depth Rated to 6,000 Meters

Robust & Compact Housing

In-Field Firmware Updates

Low Power Consumption

Emulate Any Device

Digital Interfaces

 

Heading:

Heading to ±0.5° of local Magnetic North.

The Heading is derived from Micro-Electrical-Mechanical-System (MEMS) based technology.

Within the ISM3D there are MEMS based GyrosAccelerometers Magnetometers.  The outputs from each of these MEMS devices are fused together using an advanced fusion algorithm.  The output from this is highly stable Heading, Pitch & Roll.

The Heading is highly resilient against temporary magnetic interferes.  This is aided by a soft and hard iron calibration feature once the unit has been installed on the ROVAUV or other underwater platform.

In areas where a large amount of steel of other magnetic disturber is present, the unit can be set to operate using the Angular Rate Gyroscopes and Accerometers, without input from the Magnetometer.  The low drift rate of the advanced MEMS based Gyroscopes enables navigation to be conducted in areas where previously only a fibre or ring laser diode based heading sensor would suffice.

 

Pitch & Roll:

Pitch & Roll to ±0.05° Accuracy.

The Pitch and Roll reading is derived from Micro-Electrical-Mechanical-System (MEMS) based technology.

Within the ISM3D there are three MEMS based GyrosAccelerometers Magnetometers.  The outputs from each of these MEMS devices are fused together, providing highly stable Heading, Pitch & Roll.

 

Applications

 

ROV & AUV:

Provides Heading to ±0.5° of local Magnetic North with Pitch and Roll to ±0.05° accuracy.

The high update rate (up to 250Hz) is highly applicable for use with auto heading and vehicle stabilisation systems.

For optimal performance, a hard and soft iron calibration can be performed on the unit once installed on the ROV or AUV. This ensures that a consistently accurate heading is provided at all times.

In areas where a large amount of steel of other magnetic disturber is present, the unit can be set to operate using the Angular Rate Gyroscopes and Accerometers, without input from the Magnetometer.  The low drift rate of the advanced MEMS based Gyroscopes enables navigation to be conducted in areas where previously only a fibre or ring laser diode based heading sensor would suffice.

 

Equipment Monitoring:

Heading to ±0.5° of local Magnetic North with Pitch and Roll to ±0.05° accuracy.

Provides a clear understanding of equipment orientation and attitude.

 

Survey:

Heading to ±0.5° of local Magnetic North with Pitch and Roll to ±0.05° accuracy.

Ideal for underwater survey work.

 

Motion Reference:

Heading to ±0.5° of local Magnetic North with Pitch and Roll to ±0.05° accuracy.

Ideal for monitoring the motion of any underwater vehicle or platform.

 

Video ISM3D seaView software demo

 

STEP Files ISM3D

 

Manual ISM3D

 

Impact SubseaISM3DMarine Distribution & Consulting, MDCMEMSAHRSSistema di riferimentoAttitude & Heading, piattaforma subacquea, veicolo subacqueo, ROV, AUV, Italia

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