9 results about "Measurement scales" patented technology

The application discloses a power distribution system fault prediction method based on fractal theory prediction and BP neural network classification, collects current data of a line to be predicted in a power distribution system, and performs fractal prediction. The fractal prediction comprises the following steps: S1, establishing a current history sequence, obtaining an accumulated sum sequence and a measurement scale; S2, performing linear regression on the accumulated sum sequence curve in a double logarithmic coordinate system to obtain a fractal dimension; and S3, performing current value prediction of future time. After the fractal prediction, the actual current value is measured, the difference between the actual value and the predicted value is calculated, the BP neural network is inputted, and a fault prediction result is obtained. The power distribution system fault prediction is performed by adopting the method combining fractal theory prediction and BP neural network classification, the method has the characteristics of high accuracy, and is suitable for fault early warning and troubleshooting of a bidirectional power flow and a multi-party participated smart grid.

A method for applying a measurement scale to a linear profile rail guide carriage surface, the guide carriage being configured to be guided on a guide rail linearly and longitudinally toward the guide rail and having a first side surface extending longitudinally, the measurement scale including at least one track extending linearly and longitudinally, including several mirror regions and marking regions arranged alternately one behind the other, uses a pulsed laser to generate a laser beam and introduces a microstructure in a first region corresponding to at least one first side surface marking region. A sequence of light pulses is directed at the first region so that the laser beam is moved two-dimensionally relative to the first region to irradiate successively different subregions of the first region by the light pulses. Each different irradiated subregion has an overlap in, or transverse to, the longitudinal direction with at least two other irradiated subregions.

The invention relates to a position measuring device for detecting the relative position of two objects, which can be moved relative to each other along a translational main movement direction and in further degrees of freedom. A scale carrier, which extends longitudinally along the main movement direction, has a first, a second and a third surface, by which surfaces a plane is respectively defined and in each of which at least one measurement scale is respectively arranged. A scanning structure assembly, which is movable relative to the scale carrier, comprises a plurality of scanning units, which are configured for generating a movement-dependent position signal from a scan of the measurement scales, wherein at least one scanning unit is assigned to each surface. The plane defined by the second surface divides the surrounding space into two half-spaces, wherein the first surface with at least one measurement scale is arranged in one of the half-spaces and the third surface with at least one measurement scale is arranged in the other half-space.

The utility model provides a water conservancy project pipe -in -place wire -laying device relates to pipe -in -place wire -laying technical field, the utility model discloses a measurement casing, one side outer wall of measurement casing is fixedly connected with the swivel plate along the horizontal direction, the output of swivel plate is fixedly connected with the tape roll along the horizontal axis direction, the outer circumferential surface of tape roll is wound with the measurement scale band, one end of measurement scale band is fixedly connected with the end of tape roll. The utility model discloses, through setting up detachable main counter weight and vice counter weight, the flexible adjustment of counter weight is realized with cooperation connecting device. When outdoor wind power is bigger, can install vice counter weight through the cooperation of rectangular connecting block and rectangular slot fast, utilize the clamping structure of wedge -shaped clamping block and clamping groove to ensure that the connection is stable, significantly increase the overall counter weight, effectively offset the impact of wind power to the scale band, avoid the scale band to shake, ensure that the measurement scale band always keeps vertical straight state in the wire -laying process, improve the accuracy of pipe -in -place path measurement.

The utility model discloses a scale tool for measuring shot blasting craters, which relates to the field of quality detection and comprises at least one scale mother ruler and at least one scale son ruler matched with the scale mother ruler. The scale sub-scale is provided with diameter marks, inner diameter measurement scales and outer diameter measurement scales of different shot blasting craters, and length marks and length measurement scales of different lengths, and is used for measuring the sizes of the shot blasting craters; the scale sub-scale is embedded into the hollow area of the scale main scale; the scale mother ruler comprises at least two adjacent measuring edges, the measuring edges are provided with scale marks, and the scale marks are used for providing standard measurement dimensions. According to the shot blasting crater scale tool, the measurement convenience of the shot blasting crater scale tool is improved through the embedded combination mode of the scale mother ruler and the scale son ruler, meanwhile, different shot blasting crater measurement scales are arranged on the scale son ruler, the measurement requirements of various shot blasting craters can be met, and the measurement efficiency of the shot blasting crater scale tool is improved.

The present application relates to the technical field of electronics, and discloses a ranging measurement scale detection method and apparatus for a ranging device, a device, and a storage medium. According to the present application, a reference ranging device is utilized to observe distances between second observation points and a first observation point in two phases, and determine, on the basis of the results of the two phases of observation, reference distance information between the corresponding second observation points and the first observation point; different ranging devices to be detected are sequentially utilized to perform two phases of observation on the distances between the second observation points and the first observation point, and observation distance information between the corresponding second observation points and the first observation point detected by the ranging devices to be detected is determined on the basis of the results of the two phases of observation; measurement scale data corresponding to the ranging devices to be detected is determined on the basis of observation distance information between the second observation points and the first observation point detected by the ranging devices to be detected and reference distance information between the second observation points and the first observation point; and a ranging device to be detected the measurement scale data of which meets a preset requirement is determined as a target ranging device.

The application provides a germplasm screening method, comprising the following steps: obtaining a preliminary screening sample set containing multi-phenotype data; performing normalization processing on the phenotype values to eliminate heterogeneity between traits; calculating a comprehensive score of each sample based on the normalized values; and finally screening out a preferred sample set according to the score. Through the automatic normalization and comprehensive scoring process, the problem that multi-trait data is difficult to integrate due to different measurement scales and genetic backgrounds is effectively solved, the breeder is liberated from tedious and subjective manual judgment, a standard and efficient large-scale germplasm screening scheme is formed, and the accuracy and efficiency of excellent germplasm resource mining are significantly improved.

The subject of the application is a system for symmetrical adjustment of carrier straps, intended specifically for backpacks. The solution is characterized by a sequence of markers marked on the surface of the carrier strap (1) of indefinite length, creating a measurement scale. This system includes a reference point (3), which serves as an orientation indicator for the position of the adjustment buckle (2). Using the measurement scale together with the reference point (3) allows the user to immediately visually verify the position of the buckle (2) on both straps simultaneously.