OSCPS - Motion Sensors
OSCP is designing and manufacturing a range of proprietary, high-performance Silicon Photonics based motion sensors. OSCP's motion sensors are based upon Photonic Integrated Circuit (PIC) and Micro-Electro-Mechanical System (MEMS) technology and measure the acceleration and rotation of an object.
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What Are Motion Sensors?
An accelerometer is a device that can measure static (gravity) or dynamic (motion or vibration) acceleration forces. The main applications requiring accelerometers can be categorized as inertial or tilt sensing, vibration, and seismic.
A MEMS rate sensor is a family of MEMS gyroscopes (Coriolis Vibratory) that measures the angular rate of a rotating object. In the in-plane detection case, a suspended mass is excited in one dimension and the vibration in the perpendicular direction is induced by the rotation due to the Coriolis force. However, such MEMS gyros are intrinsically noisy with low performance due to having moving parts. OSCP's PIC gyros have no moving parts and therefore have significantly better performance and reliability as compared to MEMS gyroscopes.
What Are The Multiple Advantages Of Integrated Opt...
The most important advantages of optical motion sensors compared to electrical ones (capacitive technology) are:
- IMMUNITY TO ELECTROMAGNETIC INTERFERENCE (EMI)
- INSENSITIVITY TO CHARGING, FIRE, HUMIDITY AND DUSTY ENVIRONMENTS
or generally, resistivity to aggressive/harsh environments. For instance, they can work underwater. They also show higher performance and therefore lower signal noise and bias drift.
In terms of integration, the advantage is that multiple sensors can be integrated on the same chip (using optical waveguides), allowing to extend the measurement range and accuracy.
This also provides essential redundancy which makes long-term reliability, therefore reducing the possibility of system failure. The end product exhibits orders of magnitude reduction in system mass and size.
This is specifically a remarkable advantage for applications where the system is limited to mass, volume and power consumption.
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