Silicon Sensing Systems Ltd

Three Silicon Sensing products have particular relevance to the marine environment. DMU41 is a tactical-grade, 9 degrees of freedom (DoF) inertial measurement unit (IMU). This is a robust MEMS product that operates in temperatures ranging from -40oC to +85oC, delivering exceptional low noise performance, bias instability and angle random walk. Its performance challenges that of typical fibre-optic gyro IMUs in a far more compact package – measuring just 50 x 50 x 50mm, weighing under 180g and consuming less than 2.5w.

The CRH03 is a high-performance/low-noise single axis gyroscope that consumes 30% less power than its predecessor and incorporates improvements in both micro electro-mechanical systems and electronics, with new drive electronics and upgrades to the sensor head. Available in five rate ranges it is highly tolerant to external vibration and delivers excellent bias instability and angle random walk.

For applications such as downhole surveying, platform stabilisation, guidance and control and autonomous vehicles, the high-stability CRS39A MEMS gyro incorporates a move to a single board from two (in the previous generation product). This has reduced the unit's mass by 40%, allowing the device to be more easily installed in space-limited applications such as the 25m cylinders typical to downhole drilling equipment. The CRS39A delivers excellent bias instability, angle random walk and exceptional low noise performance.