Abstract: An embodiment of the present disclosure may provide a method of detecting a fault location using an acoustic emission signal, including a measuring step of measuring, by a signal measuring unit including at least three sensors disposed in a diagnosed subject and isolated from one another, an acoustic emission signal generated from a faulty part of the diagnosed subject, a signal pre-processing step of filtering and amplifying, by the signal pre-processing unit, the acoustic emission signal, an extraction step of extracting, by a data operation unit, a measuring time, that is, the time when the acoustic emission signal reaches each of the at least three sensors of the signal measuring unit, and a first analysis step of analyzing, by a data analysis unit, a location and occurrence time of the faulty part by using the measuring time and location information of the signal measuring unit.

Abstract: The invention relates to a toothbrush case, the toothbrush case comprising a lower case having a projection portion for projecting at a given height (T) on a supporting surface, a ultraviolet radiation source supported by the supporting surface in the lower case, a receiving member having a portion for receiving the toothbrush so that it can sanitize the toothbrush with ultraviolet light, and an upper case being hinge coupled with the lower case for opening and closing the receiving member, the toothbrush case further comprising: a spaced supporting portion being provided in the lower surface of the supporting surface in the lowercase and being projected at the given height (T) so that moisture in the ground such as a bathroom's ground are not in contact with the supporting surface and that outside air flows into the bottom of the supporting surface in the case that the lower case is placed on the ground, a lower air flow path being formed on the surface of the supporting surface in the lower case so tha

Abstract: The invention relates to a toothbrush case, the toothbrush case comprising a lower case having a projection portion for projecting at a given height (T) on a supporting surface, a UV radiation means supported by the supporting surface in the lower case, a receiving member having a portion for receiving the toothbrush so that can sanitize the toothbrush with UV light radiated by the UV radiation means, and an upper case being hinge coupled with the lower case for opening and closing the receiving member, the toothbrush case further comprising: a spaced supporting portion being provided in the lower surface of the supporting surface in the lowercase and being projected at the given height (T) so that moisture in the ground such as a bathroom's ground are not in contact with the supporting surface and that outside air flows into the bottom of the supporting surface in case that the lower case is placed on the ground; a lower air flow path being formed on the surface of the supporting surface in the lower case so

Abstract: An impact sensing system senses an impact or acceleration applied and provides an external alarm indicative of the impact or acceleration applied. An envelope detector detects an envelope of an output signal of said sensor unit. An amplifier amplifies the output signal of said envelope detector, a direct current component being eliminated therefrom. A first low pass filter filters a first level signal from the output signal of said amplifier, the first level signal being indicative of a first level of impact or acceleration. A second low pass filter filters a second level signal from the output signal of said amplifier, the second level signal being indicative of a second level of impact or acceleration. A first timing pulse generator generates a first timing pulse with a first time duration in response to the output signal of said first low pass filter, the first time duration being indicative of said first level signal.