9results about How to "Solve difficult to locate" patented technology

The invention provides a power transmission line tower line system weak point positioning method suitable for a micro-meteorological area, and belongs to the technical field of power transmission line tower operation and maintenance. According to meteorological data obtained by a meteorological detection device and a meteorological station around a power transmission line, whether the meteorological data meet data characteristics of micro-meteorological is judged; then determining the span position of the power transmission line with the microclimate; all meteorological data are converted into load data, and then a finite element analysis method is adopted to apply loads to all components of the power transmission tower; calculating the safe operation performance of the power transmission tower corresponding to each evaluation index in the micro-meteorological area; and multi-element power transmission tower safety evaluation indexes are formed. According to the method, the weak point of the power transmission tower is reversely searched by adopting the multivariate positioning logic model, the main material position when the tower falling probability of the power transmission tower is maximum is positioned, the weak point of the power transmission tower under various evaluation indexes is finally determined, and the problem that the weak point of the power transmission tower in a micrometeorological area is difficult to position is solved.

The invention provides a fuel cell sampling line virtual connection detection circuit and method, fuel cells are sequentially connected in series, and the fuel cell sampling line virtual connection detection circuit comprises a filter capacitor, a sampling resistor, a voltage detection optocoupler, an optocoupler gating unit, a virtual connection detection optocoupler, a divider resistor, an analog-to-digital conversion unit and an MCU. The problem that a voltage acquisition fault problem point is difficult to position is solved; according to the virtual connection detection circuit, the isolation optocoupler and the divider resistor are added, so that the detection of the sampling line connection equivalent resistor is realized, the cost is low, and the realization is easy; according to the virtual connection detection circuit and method, the characteristic that the battery voltage is 0 when no hydrogen is supplied to the fuel battery is fully utilized, and the battery is equivalent to a resistor for measurement; according to the virtual connection detection circuit and method, the complexity of fuel cell voltage acquisition fault processing is reduced, and the after-sale cost of the CVM is reduced.

This invention discloses a single-tooth electromagnetic bandgap resonant cavity for testing dielectric properties in the thickness direction, belonging to the technical field of dielectric property testing for microwave and millimeter-wave materials. The single-tooth electromagnetic bandgap resonant cavity constructed by this method uses the TE test mode. 10n The electric field direction within the cavity is perpendicular to the material thickness direction, enabling the testing of dielectric properties along the Z-axis. This cavity allows for multi-frequency testing, meeting testing requirements within the 2.5GHz to 110GHz frequency range. With a quality factor greater than 3000, it offers higher testing accuracy when measuring dielectric loss. Compared to a double-tooth electromagnetic bandgap resonant cavity, a single-tooth electromagnetic bandgap resonant cavity is simpler, solving the positioning difficulties caused by the need for strict symmetry in the electromagnetic bandgap structure between the two half-cavities, while also reducing manufacturing costs. Furthermore, one side of the single-tooth electromagnetic bandgap resonant cavity is a smooth metal plate, making sample insertion through the gap more convenient.

The utility model provides a positioning tire for machining an outer arc of a mining arc tooth connecting chain ring, which is used for positioning a blank for machining the mining arc tooth connecting chain ring, and comprises an outer arc tire body, an inner arc tire body and an outer arc tire body, the positioning plate is arranged on the outer arc tire body and is matched with the outer arc tooth part of the blank; and the pressing plate is arranged on the positioning plate. According to the positioning tire for machining the outer arc of the mining arc toothed chain ring, the fitting end face which is the same as the blank in shape is arranged on the outer arc tire body, so that the blank is preliminarily positioned, the positioning plate is used for secondarily positioning the blank, the pressing plate is used for clamping the blank, and the problem that the blank is difficult to position in the prior art is solved.

The invention relates to the field of automatic testing, discloses a selenium and picture matching and combining positioning method in automatic testing, and solves the problem that positioning is difficult when no DOM (Document Object Model) node exists in a web page. According to the method, firstly, action functions are compiled, action keywords are defined, the action functions are packaged into a library, and different action sequences are compiled through a JSON file; when web element positioning is carried out, the DOM associated nodes of the elements are searched firstly, if the DOM associated nodes are searched, positioning is carried out through the DOM associated nodes, and a script sequence is executed after positioning succeeds; and if the DOM association node of the element is not found, carrying out picture identification positioning, and executing the script sequence after the positioning is successful.

The application provides an aluminum alloy door frame, which comprises an aluminum alloy frame body with an inner hole and connecting pieces arranged at the corners of the aluminum alloy frame body respectively. The aluminum alloy frame body comprises four aluminum alloy profiles which are connected with each other, and the connecting pieces are respectively inserted between two aluminum alloy profiles which are connected with each other. The aluminum alloy profile comprises a main body, an extension section connected to one end of the main body away from the inner hole, a sealing strip arranged on the extension section, the extension section arranged outside the window, the inner side of the extension section abutting against the wall, and the side of the main body abutting against the side of the window. The outer side of the extension section is connected with a first glass layer, and the sealing strip is overlapped between the first glass layer and the wall. The connecting pieces are inserted at the four corners of the aluminum alloy frame body, so that the overall structure of the aluminum alloy frame body is strengthened. The aluminum alloy profile is provided with the main body and the extension section, the main body is used for inserting the connecting pieces, and the connecting pieces are inserted into two adjacent main bodies when two aluminum alloy profiles are connected, so that the positioning during the connection and installation of the aluminum alloy frame body is facilitated.

The present invention provides a positioning system and a positioning method based on a two-dimensional code, a gyroscope and an accelerometer, as well as an information service method. The system comprises a two-dimensional code, a mobile phone with a built-in gyroscope, an accelerometer and a camera, and a system server. A two-dimensional code mark representing the user's own position is arranged at a main position of a user's walking path. The user's mobile phone camera establishes an image information capture connection with the two-dimensional code mark, shoots the two-dimensional code to obtain main position information, the mobile phone gyroscope and accelerometer establish a motion information capture connection with the user's action, captures the user's motion direction and acceleration information, the user's mobile phone establishes a communication connection with the system server, the acquired two-dimensional code position information and the user's motion direction and acceleration information captured by the gyroscope and the accelerometer are sent to the system server, and the actual position and position map information sent to the mobile phone by the receiving system server are provided for the user to view.

This application discloses a method, apparatus, device, and storage medium for identifying transaction anomaly risks, relating to the field of anomaly detection in microservice systems. The method includes: real-time collection of transaction business data, microservice operation data, and link call data, followed by feature extraction to obtain standardized real-time multi-dimensional risk correlation features; inputting these real-time multi-dimensional risk correlation features into an adaptive optimization model to obtain preliminary risk identification results; synchronizing these features to a digital twin of the microservice transaction link; using the digital twin to simulate the current transaction flow state and generate real-time simulation risk assessment results; and combining the preliminary risk identification results with the real-time simulation risk assessment results to query a dynamic causal graph, identify risk transmission paths and root causes, and determine the final risk level. Through the above methods, this application improves the accuracy, real-time performance, and adaptability of risk identification in complex microservice environments.

The invention discloses a fastener, a fastening assembly and a pressure riveting die, the fastener comprises a body and a boss, and the body is provided with a first surface used for supporting a metal plate. The boss protrudes out of the first face, the size of the boss is smaller than that of the body, the boss is provided with the first flower teeth connected with the first face, and due to the fact that the first flower teeth are provided with the multiple tooth parts, sheet metal materials flow into gaps of the adjacent tooth parts, and the torsion resistance capacity when the fastener is connected with the sheet metal can be improved. And if the diameter of the first flower tooth is gradually reduced in the direction towards the first surface, the first flower tooth and the first surface or other surfaces form an inverted taper ear-shaped flower tooth groove, so that the connection reliability and stability are improved, and the tensile capacity of the product can be improved. The boss is further provided with the first groove which is concave inwards, compared with a drum type, the boss is not prone to slipping off, the material containing space of a product can be increased, the connecting strength of materials such as light alloy with low shear capacity after riveting is improved, and the tensile capacity of the product is improved.