Abstract: The present disclosure relates to a contactless charging device and a contactless charging method using the same, and particularly, to a location zone-based contactless charging device and a contactless charging method using the same that enable multiple passengers to be charged simultaneously in a one-by-N format without a need for direct tagging of a vehicle terminal, by utilizing a step sensor built into a passenger terminal. The present disclosure may accurately and automatically perform the charging without the terminal tag even when multiple passengers board and alight at the same time, such as in the tram, thereby reducing a boarding and alighting time and providing convenience and safety to the passengers. In addition, the present disclosure may accurately determine the boarding and the alighting of the passenger even when sensing of some beacons installed at multiple stations is uncertain or some beacons are broken, thereby improving reliability and preventing incorrect charging.

Abstract: The present invention relates to a compound represented by chemical formula I, a stereoisomer thereof, a pharmaceutically acceptable salt thereof, a hydrate or solvate thereof, and a pharmaceutical composition comprising same.

Abstract: Provided is a piezoelectric property measuring apparatus for a liquid or viscous material. The piezoelectric property measuring apparatus includes a fixing jig having an inner space and an opened space; an operating jig configured to close the opened region of the inner space; a first electrode and a second electrode; a driving module moving the operating jig according to a driving signal; a motion information measuring module measuring motion information of the operating jig; a charge amount measuring module measuring the charge amount through the first electrode and the second electrode; and a control module generating the driving signal for the driving module, supplying the driving signal to the driving module, receiving the motion information, receiving charge amount information of the closed space, and measuring a piezoelectric property of the sample by using the motion information and the charge amount information.

Abstract: Provided is a piezoelectric property measuring apparatus for a liquid or viscous material. The piezoelectric property measuring apparatus includes a fixing jig having an inner space and an opened space; an operating jig configured to close the opened region of the inner space; a first electrode and a second electrode; a driving module moving the operating jig according to a driving signal; a motion information measuring module measuring motion information of the operating jig; a charge amount measuring module measuring the charge amount through the first electrode and the second electrode; and a control module generating the driving signal for the driving module, supplying the driving signal to the driving module, receiving the motion information, receiving charge amount information of the closed space, and measuring a piezoelectric property of the sample by using the motion information and the charge amount information.

Abstract: The present disclosure relates to a cosmetic composition having piezoelectricity. More particularly, the present disclosure relates to a piezoelectric cosmetic composition which includes a piezoelectric material capable of generating microcurrent upon the application of pressure as an active ingredient. According to the present disclosure, when the piezoelectric composition is applied to and massaged on the skin, it is possible to maximize an effect of skin care, including an effect of improving skin elasticity, by generating microcurrent.