Abstract: A fluid monitoring apparatus for deployment within a pipe arrangement, includes a measurement device configured to measure data indicative of a fluid property, and an energy harvesting system including a turbine configured to be rotated by a flow of fluid through the pipe arrangement, and a generator coupled to the turbine and configured to generate electrical energy. The fluid monitoring apparatus is configured to use the electrical energy to power the measurement device.

Abstract: Devices, networks, systems and methods for coordinating communications on multi-path radio transmission mesh networks include evaluating available path metrics to ensure the best available connection routes through the network can be understood and utilized. The evaluation of the path metric may include comparing an xth percentile signal strength indication (RSSI) value with a predetermined RSSI threshold level, wherein x is strategically selected to address multi-path signal fading issues.

Abstract: Devices, networks, systems and methods for coordinating communications on multi-path radio transmission mesh networks include evaluating available path metrics to ensure the best available connection routes through the network can be understood and utilized. The evaluation of the path metric may include comparing an xth percentile signal strength indication (RSSI) value with a predetermined RSSI threshold level, wherein x is strategically selected to address multi-path signal fading issues.

Abstract: A sensor system for security purposes comprises a piezo-electric device (F) attached to a member (E) in the line of stress flux such that unauthorised movement of the member will result in deflection of the piezo-electric device and generation of an electrical output. The electrical output is passed to an electronic control circuit (H) which includes filter means (LPF) for separation of signals due to high-frequency events and is arranged to transmit a signal to an alarm.

Abstract: A sensor system is provided for use in detecting movement of an item, e.g. a picture 16, suspended from a wall or other substantially vertical structure, or for detecting movement of an item displayed or stored on a horizontal or inclined surface, the sensor system including a piezoceramic element (22) which is mounted on a metallic disc (23) which, in use, is located between the item (16) and the structure or surface, and means for detecting the generation of an output by the piezoceramic element (22) as a result of deflection of the disc (23) in either of two opposite directions as a result of movement of the item (16).

Abstract: A sensor system is provided for use in detecting movement of an item, e.g. a picture 16, suspended from a wall or other substantially vertical structure, or for detecting movement of an item displayed or stored on a horizontal or inclined surface, the sensor system including a piezoceramic element (22) which is mounted on a metallic disc (23) which, in use, is located between the item (16) and the structure or surface, and means for detecting the generation of an output by the piezoceramic element (22) as a result of deflection of the disc (23) in either of two opposite directions as a result of movement of the item (16).