2results about How to "Correct polarity" patented technology

The application provides a method and system for removing electro-physiological signal gradient artifacts in a magnetic resonance environment, and relates to the technical field of magnetic resonance image processing. The method comprises: collecting an electro-physiological signal of a magnetic resonance scan and a scan synchronization signal; aligning and windowing the electro-physiological signal based on the scan synchronization signal to obtain a windowed sequence; constructing an artifact template based on the windowed sequence; combining the windowed sequence and the artifact template to calculate a first residual; performing principal component analysis on the artifact template and the first residual to obtain a second residual; performing logarithmic domain conversion and polarity extraction operations on the second residual to obtain a logarithmic domain sequence and a polarity symbol layer; inputting the logarithmic domain sequence into a deep learning denoising network to output a de-artifact logarithmic domain sequence; and performing inverse logarithmic transformation and polarity recovery operations on the de-artifact logarithmic domain sequence and the polarity symbol layer, respectively, to determine a de-artifact signal.

The utility model discloses a track socket of preventing adapter reverse installation and taking electricity, which comprises a track and an adapter. The track is internally provided with a first conductive strip and a second conductive strip, and the track is provided with an insertion opening. The adapter is provided with a first electricity-taking arm and a second electricity-taking arm. The track is internally provided with a push-fitting part corresponding to the first conductive strip, and is provided with a space for giving way corresponding to the second conductive strip. The second electricity-taking arm is provided with a reverse installation push part. When the adapter is normally installed in the track, the first electricity-taking arm is in contact with the first conductive strip, the second electricity-taking arm is in contact with the second conductive strip, the push-fitting part is not in cooperation with the first electricity-taking arm, and the space for giving way accommodates the reverse installation push part of the second electricity-taking arm. When the adapter is reversely installed in the track, the reverse installation push part of the second electricity-taking arm is in abutment with the push-fitting part, and the push-fitting part pushes the second electricity-taking arm away to a position where the second electricity-taking arm is out of cooperation with the first conductive strip. The track socket can prevent the adapter from being reversely installed and taking electricity.