5results about How to "Avoid incongruity" patented technology

The invention discloses an image splicing method and device based on foreground and background segmentation. The method comprises the following steps: carrying out foreground and background segmentation on two images to be spliced, estimating a 2D rotation matrix between the two images according to angular velocity data acquired by a gyroscope, and estimating a gravity direction according to acceleration data when the two images are shot; preprocessing the images by using a rotation matrix between the two images, dividing the images into grids, and separately splicing the segmented foreground and background; according to requirements, the position of the final foreground in the background is calculated through the relative position of the foreground, fusion and splicing are carried out, and gravity correction can be selectively carried out on the final image. According to the method, the artifact problem occurring in the foreground and background image splicing is reduced, the excessive distortion of the edge is reduced, the dynamic foreground can be removed according to requirements, and the image splicing quality and accuracy are improved.

The invention belongs to the technical field of geotechnical engineering rock mass strength parameter testing, discloses a parameter calibration method of a Hoek-Brown empirical strength criterion, and solves the problems that an existing method depends on a single data source, is low in fitting precision and does not consider rock mass dynamic disturbance. The method comprises the following steps: acquiring indoor test and field actual measurement multi-source data, and carrying out abnormal value elimination and normalization preprocessing; constructing a rock mass disturbance coefficient dynamic correction model to correct basic parameters; an improved cuckoo-least square fusion algorithm is adopted to fit the core parameters; and the parameter precision is verified in combination with reserved data. The method is comprehensive in data source, parameters can dynamically adapt to working conditions, fitting precision is high, and the method can be widely applied to rock mass strength evaluation of geotechnical engineering such as tunnels and side slopes.

The invention provides a refrigerating unit and a control method thereof, the refrigerating unit comprises a compressor, a condenser and an air cooler, the air cooler is a double-coil air cooler and comprises a refrigerating coil and a dehumidifying coil, an exhaust pipe of the compressor is divided into three branches, the three branches comprise a refrigerating exhaust pipeline, an inlet is provided with a refrigerating electromagnetic valve, and an outlet is provided with a one-way valve; wherein the condenser is connected; an inlet of the heating and dehumidifying exhaust pipeline is provided with a dehumidifying electromagnetic valve, an outlet of the heating and dehumidifying exhaust pipeline is connected to an inlet of the dehumidifying coil pipe, an outlet of the dehumidifying coil pipe is connected to an inlet of the heating and dehumidifying liquid return pipeline, and an outlet of the heating and dehumidifying liquid return pipeline is provided with a one-way valve; an inlet of the defrosting exhaust pipeline is provided with a defrosting electromagnetic valve, and an outlet is provided with a one-way valve; an outlet of the refrigeration exhaust pipeline and an outlet of the heating and dehumidifying liquid return pipeline are connected to an inlet of the liquid supply pipeline, an outlet of the liquid supply pipeline is connected to an inlet of the refrigeration coil, and an outlet of the refrigeration coil is connected to a first inlet of the compressor through an air return pipeline. According to the refrigerating unit provided by the invention, one set of refrigerating and condensing unit can meet the temperature and humidity double-index requirements, the combined operation of the refrigerating unit and a rotary dehumidifier is not needed, and the initial investment is reduced; a refrigerant defrosting method is adopted, the defects of high energy consumption and large warehouse temperature fluctuation caused by traditional electric defrosting are overcome, and energy-saving operation and low warehouse temperature fluctuation of the cold storage are achieved.

This invention discloses a method and related equipment for determining the actual furnace heat load deviation coefficient of a water-cooled wall in an ultra-supercritical Π-type boiler. The water-cooled wall comprises multiple loops divided along the width of the furnace. The method includes: obtaining the working fluid flow rate, outlet pressure, inlet enthalpy, measured outlet steam temperature, and total inlet working fluid flow rate and total inlet enthalpy for each loop; establishing the correlation between the outlet working fluid enthalpy of each loop and the heat load deviation coefficient; establishing a system of simultaneous equations with the heat load deviation coefficient of each loop as unknowns based on the conservation of total mass and total energy; substituting the measured outlet steam temperature and outlet pressure of each loop into a working fluid thermodynamic property database to obtain the measured outlet enthalpy, and then substituting this into the system of simultaneous equations; solving the system of simultaneous equations to obtain the actual furnace heat load deviation coefficient. This method avoids the problems of existing iterative correction methods relying on initial values ​​and unstable convergence by using a reverse analytical solution, and provides stable and reliable solutions under complex operating conditions such as deep peak shaving.

The invention discloses a time-cost-unobstructed combined river network section multi-objective optimization evaluation method. The method comprises the following steps: firstly, carrying out structured analysis on basic information and an engineering target, and establishing a unified input system comprising flood passing time, cost, a patency target, a weight of the patency target and a reference value; then, multi-scene flood simulation is carried out based on an SWMM model to quantify flood passing time, the whole life cycle engineering cost is calculated, and a smoothness score is calculated in combination with the overflowing capacity, the water level change rate and the water flow resistance; then, candidate scheme parameters are extracted, deviation degree comparison is carried out on the candidate scheme parameters and reference values, and points needing to be adjusted are identified; and finally, performing hierarchical evaluation and sorting on the schemes through weighted comprehensive core index scores, and outputting recommendation schemes and specific structural optimization suggestions. According to the method, contradictions among time, cost and smoothness can be systematically balanced, and comprehensive support is provided for scientific design and optimization decision making of the river network section.