13results about How to "Avoid magnification" patented technology

The invention discloses a face gear on-machine measurement comprehensive error compensation method based on sequential decoupling. Specifically, a sequential decoupling compensation strategy is provided for solving the problem that the measurement precision is limited due to mutual coupling of a measuring head pre-stroke error and a workpiece installation coordinate system error in the prior art. The method comprises the following steps: firstly, establishing a measuring head pre-stroke error model through standard ball calibration, and performing anisotropic compensation on a tooth surface measuring point by utilizing Delou inner triangulation and a weighted interpolation method; secondly, based on the compensated data, the outer cylindrical surface and the tooth top plane of the face gear are accurately fitted through an iterative optimization algorithm, an accurate measurement coordinate system is established, and the initial phase of the C axis is optimized; and finally, reconstructing an actual tooth surface by adopting a two-stage NURBS curved surface fitting method, and calculating a normal deviation. According to the method, an error propagation chain is effectively cut off through a strict execution sequence, the overall precision and reliability of on-machine measurement are remarkably improved, and a key technical support is provided for face gear closed-loop manufacturing.

The invention relates to a photovoltaic system with an anti-hot-spot effect, which comprises photovoltaic panels arranged in rows and a cleaning device perpendicular to the arrangement direction of the photovoltaic panels and parallel to the photovoltaic panels, and the cleaning device moves along the arrangement direction of the photovoltaic panels through a first moving device; the photovoltaic panels are provided with temperature sensors, the temperature sensors are connected with the control switchboard, if the temperature detected by any temperature sensor is higher than a temperature threshold value, the control switchboard controls the first moving device to move towards the photovoltaic panels with the temperature exceeding the standard, and the cleaning device cleans the surfaces of the passing photovoltaic panels in the moving process. According to the photovoltaic system with the hot spot prevention effect, the temperature condition of each photovoltaic panel is monitored in real time, the photovoltaic panel with the temperature exceeding the standard is found in time and automatically cleaned, meanwhile, the switchboard is controlled to send an early warning signal to the switchboard, the abnormal temperature of the photovoltaic panel is controlled in time, the spontaneous combustion time of the photovoltaic panel is delayed, and the self-ignition efficiency of the photovoltaic panel is improved. And most dirt can be cleaned in time, so that the labor cost is reduced.

The invention discloses a roller peeling real-time monitoring and automatic shutdown control method. The method comprises the steps that real-time rolling force data are obtained; rolling force prediction data are obtained based on the real-time rolling force data and a trained ARIMA rolling force prediction model; obtaining a first rolling force absolute deviation according to the real-time rolling force data and the rolling force prediction data; and carrying out real-time monitoring and automatic shutdown control on the peeling state of the roller based on the first rolling force absolute deviation and a rolling force absolute deviation threshold value. By means of the method, further expansion of production accidents such as roller breakage caused by the fact that a rolling mill continues to operate due to the fact that roller stripping is not found in time on site can be prevented, and the consumption cost of the on-site roller is reduced; and meanwhile, the accident shutdown time caused by roller stripping on site can be greatly shortened, quick response can be achieved after the roller is abnormally stripped, automatic shutdown is achieved, and the accident shutdown time caused by roller stripping and damage to rolling mill equipment are shortened within the maximum range.

The invention relates to the field of energy storage power station control, and particularly discloses a layered distributed emergency stop control system of an energy storage power station, which comprises a local emergency stop control unit used for executing shutdown control of at least part of equipment in the energy storage power station; the regional emergency stop control unit is associated with all local emergency stop control units in a regional coverage range and is used for executing shutdown control of equipment in the regional coverage range in the energy storage power station; and the station end scram control unit is associated with the all-region scram control unit and is used for executing all-region shutdown control of the energy storage power station through the station end controller when the station end scram button is triggered. According to the technical scheme provided by the invention, through the arrangement of the regionalized distributed layered emergency stop control units, the reliability risk that the existing emergency stop control system is easily influenced by the single-point fault of the central controller is avoided, and the omnibearing precise shutdown control and local isolation protection of the energy storage power station are realized.

This application relates to a joint estimation method for wireless communication delay and frequency offset based on hill-climbing fine search. The method includes: setting a time offset search range, a frequency offset search range, a coarse search step size, and a fine search step size based on prior information; generating a two-dimensional grid point set within the search range according to the coarse search step size; calculating the cost value of each grid point based on a cost function; taking the time offset and frequency offset corresponding to the maximum value as the coarse estimate; using the coarse estimate as the initial point, performing fine search iterations using hill-climbing; calculating the cost value of multiple candidate points in the neighborhood in each iteration, comparing and determining the update direction, and updating the current time offset and / or frequency offset; repeating the iteration until a preset exit condition is met, and outputting the final estimate. This application effectively solves the parameter coupling problem of traditional step-by-step estimation in NTN scenarios, while balancing search range and computational complexity, facilitating engineering implementation, and being applicable to various NTN systems and terminal forms.

This utility model discloses a busbar trunking cutting and shearing device, applied in the field of power distribution equipment processing technology. It includes a trunking plate B, with side plates B slidably connected to both sides of the inner wall of the trunking plate B. A connecting rod B is bolted to opposite sides of the two side plates B. Sliding sleeves are bolted to the top and bottom of the connecting rod B. This utility model uses concentric clamping to evenly distribute cutting stress, avoiding twisting or local deformation of the busbar trunking due to unilateral force, maintaining the geometric accuracy of the conductor arrangement, effectively offsetting vibrations generated by the contact between the tool and the material during cutting, reducing the risk of chipped edges, and avoiding tilted or stepped cross-sections caused by workpiece offset. Timely separation avoids slippage or tipping of the cut piece due to gravity and mechanical stress, reducing secondary injuries such as pinching and collisions. The separation action reduces continuous friction between the cutting surface and the tool, preventing the expansion of burrs and extending the tool's service life.

The utility model relates to the technical field of Internet of Things, and discloses a building management and control system and an intelligent building, and the system comprises a control module, a plurality of control terminals, a sensor module, and a building management subsystem. The sensor module is used for gathering sensor data of the building management subsystem and transmitting the sensor data to the control module; the control terminal is used for monitoring the operation state of the building management subsystem and sending an equipment control instruction for controlling the building management subsystem to the control module; and the control module is used for receiving the sensor data of the building management subsystem acquired by the sensor module, and controlling the operation state of the building management subsystem based on the sensor data and the equipment control command sent by the control terminal. According to the utility model, the on-site or mobile terminal remote regulation and management function of the equipment in the building on the mobile terminal is realized, and the problem that the on-site or mobile terminal remote regulation and management function on the mobile terminal does not exist in the prior art is solved.

This invention discloses a culture medium for the biosynthesis of indigoidine and its application, belonging to the field of microbial fermentation and synthetic biology technology. Addressing the problems of low yield, insufficient precursor supply, byproduct accumulation, and poor scale-up stability in existing culture media for indigoidine fermentation, this invention provides a core culture medium system. This medium, per 1L, includes: 10-50g carbon source, 5-20g nitrogen source, 10-30g L-glutamine, and 0.1-20g inorganic salts, with optional addition of 0.1-20mL trace element salt solution and / or vitamin components. The pH is 6.0-7.5. The carbon source is selected from glucose, glycerol, sucrose, dextrin, or combinations thereof; the nitrogen source is selected from ammonium sulfate, yeast extract, peptone, or combinations thereof. This culture medium can significantly increase the yield of indigoidine synthesized by recombinant *E. coli* and effectively inhibit acetic acid accumulation. In a 5L fermenter, compared with LB medium, this medium can increase the indigoidine yield by at least 80% while reducing the acetic acid concentration in the fermentation broth by more than 60%, showing good prospects for industrial application.

The invention discloses a double-stage document image general restoration method and system for a large model, and the method employs a double-stage restoration model for image restoration, and comprises a space correction stage and a pixel correction stage. In the spatial correction stage, the degraded image is processed through a double-branch structure of a layout branch and a text line branch; wherein the layout branch predicts a sparse two-dimensional mapping field and a three-dimensional coordinate grid to recover a global geometric structure, and the text line branch generates a local modulation signal based on text region features extracted by a pre-training text segmentation model; fusing global and local information, generating a dense two-dimensional mapping field, and outputting a space correction image by using reverse sampling operation; in a pixel correction stage, a spatial correction image and a gradient map thereof are used as conditions to be input into a denoising diffusion implicit model architecture to gradually recover pixel values. According to the method, general repair of various degradation problems is completed through double-stage repair, so that the content reading capability of various large models on document images is improved.

The invention relates to the technical field of artificial intelligence and deep learning, and discloses a biological heterogeneous data safety monitoring method and system based on deep learning, and the method comprises the steps: obtaining three types of heterogeneous data: genome, electronic health record and medical image; respectively preprocessing to generate standardized features; the multi-modal alignment encoder is fused into a unified embedded representation; calculating a disturbance sensitivity score by synchronously utilizing a disturbance-resisting sensing unit; triggering a dynamic credibility verification module based on the score, and executing gradient consistency check and feature reconstruction residual analysis; and if detection is abnormal, inference is terminated and an alarm is given, otherwise, a disease prediction backbone network output result is input. The system comprises corresponding functional units, is integrated on a private cloud platform, and supports encrypted transmission and trusted execution environments. According to the invention, cross-modal adversarial attacks can be identified, and safe and reliable operation of medical AI is guaranteed.

The utility model relates to the technical field of workpiece clamping, and provides a clamping device and a machine tool, and the clamping device comprises a driving motor, an electric pull rod input shaft, a lead screw and a lead screw nut. Wherein the driving motor is provided with a motor output shaft; the first end of the electric pull rod input shaft is rigidly and directly connected with the motor output shaft; the first end of the lead screw is directly connected with the second end of the electric pull rod input shaft; the lead screw nut is in threaded transmission connection with the second end of the lead screw. The pull rod is connected to the lead screw nut. According to the clamping device provided by the utility model, the input shaft of the electric pull rod is rigidly and directly connected with the output shaft of the motor, and the lead screw is directly connected with the input shaft of the electric pull rod, so that the driving force of the driving motor can be transmitted to the lead screw without arranging a speed reducer, the driving force can be prevented from being amplified by the speed reducer, and the clamping force of the clamping device is further reduced; and the application range of the device is wider, thin-wall workpieces or elastic workpieces and other workpieces with small bearing force can be clamped, and the thin-wall workpieces or the elastic workpieces and other workpieces cannot be damaged.

This invention proposes a fire-resistant insulation structure and fire detection method for a permanent magnet traction converter. The fire-resistant insulation structure includes a converter module, an isolating contactor, and a cabinet. The AC output terminal of the converter module is connected to the input terminal of the isolating contactor, and the output terminal of the isolating contactor is connected to the AC output terminal of the cabinet using a complete cable or a copper busbar with insulating material. This fire-resistant insulation structure fills the gaps in existing fire-resistant design and protection methods for permanent magnet traction systems, ensuring the operational safety of the permanent magnet traction system during application.

The invention relates to a closed-loop calibration method, equipment and system for channel delay of a digital board card of automatic test equipment, and relates to the field of automatic test equipment. Aiming at the problems of high cost, low precision and difficulty in large-scale expansion of the existing calibration scheme, the method comprises the following steps of: establishing electrical connection between a to-be-calibrated channel and an isomorphic reference channel; carrying out multiple self-loop and cross-channel cross transmit-receive measurements on the two to obtain a relative time value; respectively calculating a sending delay deviation and a receiving delay deviation of the to-be-calibrated channel relative to the reference channel based on the measured values; and respectively adjusting the programmable delay units on the channel receiving and transmitting paths according to the deviation so as to align the reference. The device is mainly used for high-speed testing of an integrated circuit, picosecond-level high-precision independent alignment of large-scale channels can be achieved in a closed loop mode in equipment without an external instrument, and the resource utilization rate is high.