Abstract: A battery pack includes a pair of battery modules having at least one pair of first grip grooves and at least one connector formed at a top thereof, a supporting plate coupled to a bottom of the pair of battery modules and fixed to the ground and a BMS assembly having a guide protrusion inserted into the first grip groove and coupled to the pair of battery modules in a plug-in type by means of the connector.

Abstract: The present invention relates to a method of hashing a perceptual vector model based on a multi-scale curvature. According to a first aspect, there is provided a method of hashing a perceptual vector model based on a multi-scale curvature including: generating a multi-dimensional feature coefficient matrix, and obtaining a multi-dimensional intermediate hash coefficient matrix; and obtaining a final binary hash matrix, and enabling the multi-dimensional binary hash matrix to be hierarchically authenticated. In addition, according to a second aspect, there is provided a method of hashing a perceptual vector model based on a multi-scale curvature including: generating a hash by using a hash function; and authenticating a vector model. In addition, an error detection probability for an object attack can be lower by about 2×10?5˜2.8×10?2, and a uniqueness probability is raised by about 0.014. In addition, an entropy can be raised by about 0.875˜2.149.

Abstract: Disclosed is a device for confirming recycle of a disposable medical handpiece, which can prevent imprudent recycle of the medical handpiece that should be discarded after one time. The device includes a signal conversion unit which receives DC power from the handpiece and detects voltage applied to a driving motor of the handpiece to convert the voltage into a rated signal and output the rated signal; a control unit which receives the output signal of the signal conversion unit, detects an initial operation state of the driving motor based on the output signal and then outputs a lamp switching signal when the driving motor is operated again after a predetermined operation interval is elapsed; and a lamp which is connected with an output terminal of the control unit and turned on in response to the lamp conversion signal.