34 results about "Overlap coefficient" patented technology

Disclosed herein is a method for recognizing a parking space line marking for a vehicle, including: detecting, by a processor, a plurality of parking spaces from a portion of a parking space line marking in an image; calculating, by the processor, an overlap coefficient representing a degree of overlapping between the detected parking spaces; selecting, by the processor, a parking space having a largest brightness coefficient as a final parking space by determining overlap when the overlap coefficient has a predetermined magnitude and comparing the brightness degrees of the overlapped parking spaces.

The invention discloses a method and a device for emitting and receiving symmetrically-distributed light beams of laser radar. A system adopts the method for independently emitting and receiving the light beams with a plurality of wavelengths, thereby eliminating an effect on a measurement result caused by different divergent angles and refractive indexes of the laser beams with the different wavelengths, independently realizing the calculation of the overlap coefficient of the system under the different laser wavelengths, developing the real coaxiality or completely parallel optical axes of receiving and emitting optical systems, ensuring data comparability and providing the method for the further development and practical application of the laser radar. The independent emission of the light beams with the different laser wavelengths in the system can be debugged under a visible software interface, so that an ordinary operator can finish the operation and maintenance of the system without the help of a precise measuring instrument or special technical personnel.

The invention relates to an abnormal water detection method based on immune negative selection, which comprises the following steps: 1) carrying out real-time monitoring with zebra fish as an object of biological monitoring; 2) carrying out real-time detection and tracking of the zebra fish through a multi-target tracking algorithm based on particle filtering, thereby obtaining a zebra fish tracking video sequence; and 3) analyzing and detecting water data, which comprises the following steps: 3.1) producing a large amount of novel data through high-frequency variation of a self-set and simultaneously carrying out low-frequency variation of the self-set; 3.2) producing a maturity detector through a detector generating algorithm based on negative selection; 3.3) judging whether the detector set is mature through combination of expectation coverage and overlapping coefficient calculation (W); and 3.4) carrying out online detection of real-time water data with the maturity detector and finally carrying out online detection of the abnormal water. The invention does not need a large amount of abnormal data, thereby reducing the detection cost and improving the real-time detection.

The invention provides a UE cell overlapping coverage condition detection method and system. A measurement report of UE and cell sites occupied by the UE is obtained, distance between the UE and the cell sites occupied by the UE is calculated, the longitudes and latitudes of the cell sites occupied by the UE are obtained, according to the longitudes and latitudes of the cell sites occupied by the UE, the measurement report of the UE and the cell sites occupied by the UE and the distance between the UE and the cell sites occupied by the UE, the longitude and latitude of the UE are calculated, then a UE cell overlapping coefficient is calculated, and a UE cell overlapping coverage condition detection result is obtained. In the whole process, according to big data mining of the measurement report of the UE and the cell sites occupied by the UE, and based on the distance between the UE and the cell sites occupied by the UE, and geographical location information of the longitude and latitude of the UE and the longitudes and latitudes of the cell sites occupied by the UE, a UE cell overlap coefficient is calculated, and simple and accurate detection of the UE cell overlapping coverage condition is realized.

Provided is a method for manufacturing a radial iron core cake. The method includes the steps of cut sheet arranging, centrifugal sheet arraying and circle-narrowing forming. Magnetic conduction silicon steel sheets with different sheet widths are arrayed on a plate surface of a bearing plate in a radial mode, the bearing plate is rotated at a high speed so that all the sheets can be thrown to the outer edge of the plate surface under the action of centrifugal force to form a neat and loosely-arrayed sheet circle, an outer circle and partition plates are removed, a steel wire rope ring is fastened and a prefabricated insulating fixed ring is sleeved with the fastened steel wire rope ring after a central circle fixing pipe and a ground lead are inserted, the steel wire rope ring and the central circle fixing pipe are detached, and then the perfect-circle radial iron core cake is formed. According to the method, all the sheets are synchronously gathered towards the central circle fixing pipe under the action of constant-pressure even tightening force so as to be tightly extruded towards one another within the set circumferential range, and therefore the sheet overlapping coefficient and effective cross section filling rate are greatly increased. The practical test shows that electromagnetic noise caused by vibration among the sheets can not occur even when an electric reactor product formed by the iron core cake is influenced by electromagnetic force in an alternating magnetic field.

The invention discloses a gear pump with an asymmetric combined curved surface tooth form. The gear pump comprises a hollow pump body; a driving gear and a driven gear which are meshed mutually are arranged in the pump body; a tooth surface on one side where the driving gear and the driven gear are contacted and stressed is a working surface, and the tooth surface on the other side is a non-working surface; a pressure angle of the working surface is 20.5 to 22.8 degrees; the gear pump is characterized in that: a pressure angle of the non-working surface is 14 to 19 degrees; and the non-working surface is formed through smooth transition of an evolvent curved surface and a circular arc camber. The gear pump has large single pump output, a large overlap coefficient, small noise, low gear collapsing probability, and transmits stably, and the chamber sweeping phenomenon is avoided.