Abstract: An abnormal vibration detection unit which is capable of stopping a wind turbine generator when excessive vibration is detected. The vibration detection unit has first and second acceleration detectors, a calculation device, a filtering relay, and a safety system which performs an emergency stop of the wind turbine generator in accordance with an output terminal of the filtering relay. The filtering relay has a filter circuit to extract a frequency component from the second analog output signal. The calculation device generates a predicted value of the output signal of the filter circuit part, and detects a failure of the first and second acceleration detectors or the filter circuit part by comparing the predicted value of the output signal of the filter circuit part with a measured value of the output signal of the filter circuit part received from the filtering relay.

Abstract: An object of the present invention is to provide an abnormal vibration detection unit which is capable of stopping a wind turbine generator in a case of detecting excessive vibration that poses danger and is designed suitably for the failure detection. The abnormal vibration detection unit comprises first and second acceleration detectors, a calculation device which receives a first analog output signal that is outputted from the first acceleration detector, a filtering relay which receives a second analog output signal that is outputted from the second acceleration detector, and a safety system which performs an emergency stop of the wind turbine generator in accordance with a state of an output terminal of the filtering relay. The filtering relay comprises a filter circuit part that performs filtering process to extract a predetermined frequency component from the second analog output signal.

Abstract: An object of the invention is to reduce stop time of a wind turbine generator caused by icing on a wind turbine blade in the wind turbine generator. The invention provides the wind turbine generator including an ice detecting unit for detecting an amount of icing on a wind turbine blade, wherein an operation mode is switched to a no-load operation mode with no power being generated in a case where the icing amount detected by the ice detecting unit exceeds a first predetermined value, and an icing amount is detected by the ice detecting unit in a state where the apparatus is operated in the no-load operation mode.

Abstract: A home or personal care product comprising a gel, characterised in that the gel is formed from dimethyl acrylamide monomer crosslinked with a crosslinker and polymerised under conditions that cause the polymer to form a pattern due to corrugation or deformation in gel thickness of the order of 0.3 mm, preferably 0.5 mm or greater (macroscopic deformation visible to the naked eye).

Abstract: An object of the invention is to reduce stop time of a wind turbine generator caused by icing on a wind turbine blade in the wind turbine generator. The invention provides the wind turbine generator including an ice detecting unit for detecting an amount of icing on a wind turbine blade, wherein an operation mode is switched to a no-load operation mode with no power being generated in a case where the icing amount detected by the ice detecting unit exceeds a first predetermined value, and an icing amount is detected by the ice detecting unit in a state where the apparatus is operated in the no-load operation mode.