| Patent application number | Description | Published |
|---|
| 20080229825 | Accelerometers - A fibre optic accelerometer particularly intended for use with an interferometer using the compliant cylinder approach but further providing a seismic mass at the core of the cylinder resulting in improved sensitivity and rejection of out-of-axis inputs. | 09-25-2008 |
| 20080277568 | Traffic Sensing and Monitoring Apparatus - Traffic sensing and monitoring apparatus ( | 11-13-2008 |
| 20090080828 | Fibre Optic Sensor Array - A fibre-optic sensor array ( | 03-26-2009 |
| 20100067018 | Phase Based Sensing - Interrogation of a phase based transducer is performed by comparing the state of the transducer at two points in time to determine the rate of change with time of the measurand represented as a phase change. The rate of change, or derivative of the phase change typically has a much smaller amplitude than the signal itself, and the derivative measurement can therefore be thought of as a low sensitivity measurement to be used instead of or in combination with the normal signal measurement having higher sensitivity. In this way, large amplitude signals which might otherwise be subject to overscaling effects can be measured more effectively. For a signal with the majority of its energy centred at approximately 800 Hz, for example, the derivative of that signal will typically be attenuated by 60 dB with a period between the two measurement times of 200 ns. | 03-18-2010 |
| 20100177302 | Phase Based Sensing - A method of interrogating a phase based transducer by providing a pulsed input including two different wavelengths. The different wavelength components can be used to derive a phase change experienced by a synthetic wavelength, and by arranging for the synthetic wavelength to be significantly greater that the component wavelengths, the phase so detected has a reduced sensitivity, and is less susceptible to overscaling effects. | 07-15-2010 |
