16results about How to "Avoid normal work" patented technology

The application relates to an FPGA prototype verification method and system of a smart meter chip, and belongs to the field of integrated circuit testing and electric power metering. The method aims to solve the problems of ASIC design transplantation to an FPGA platform, large difference between a verification environment and a real power grid, and lack of a real-time closed-loop verification mechanism. A technical scheme efficiently transplants the design to the FPGA by optimizing ASIC front-end synthesis constraints and adopting a netlist-level IP replacement strategy; a hardware-in-the-loop system is constructed, which comprises a real power grid signal source, a separation device simulation front end, an FPGA verification board, a high-precision standard electric energy meter and a host computer. The system can generate a real power grid excitation and realize synchronous collection of prototype output and the standard meter, real-time error analysis and dynamic adjustment of parameters, thereby forming a closed-loop verification. The application significantly improves code transplantation efficiency, provides a highly consistent real power grid verification environment, and greatly improves verification iteration and defect positioning speed.

This utility model discloses a low-friction high-speed rotating motor rotor assembly structure, including a shaft and a rotor. The rotor is sleeved on the shaft, and a stator is sleeved on the rotor. A connecting ring sleeve is sleeved on the shaft, and a liquid storage cavity is formed in the connecting ring sleeve. The liquid storage cavity contains lubricating oil and a sponge sleeve. Multiple protrusions are circumferentially fixedly connected to the shaft, and multiple strip grooves are formed circumferentially on the shaft. In this utility model, the shaft rotates at high speed, driving the protrusions to rotate at high speed as well. The protrusions can squeeze the sponge sleeve, and the squeezed lubricating oil falls into the strip grooves. The lubricating oil can lubricate and cool the shaft. Some of the lubricating oil flows from the strip grooves into the vertical grooves, and then into the ring grooves, cooling and lubricating the rotor. This avoids the rotor working in a high-temperature environment for a long time, reduces frictional damage caused by high-speed rotation, and improves the service life of the rotor.

The application discloses a working mode detection method and circuit of an active clamp flyback converter, a main control chip, samples a drain end voltage VDS of a main power tube QL in a current period, detects a first voltage drop time of the main power tube QL after the main power tube QL is turned off, and determines the working mode of the current period of the active clamp flyback converter by judging the sequence of the first voltage drop time and a clamp tube driving time. Furthermore, based on the working mode determination result, the dead time of the active clamp flyback converter is accurately adjusted to be suitable for the detected working mode, the problem of mismatching between the dead time and the working mode is avoided, the main power tube QL of the active clamp flyback converter can keep realizing soft switching in a full load range, the switching loss of the active clamp flyback converter is greatly reduced, and the efficiency of the converter is improved.

This invention provides a method for controlling Spartina alterniflora and promoting natural mangrove restoration based on rolling mulching and in-situ mud slurry, belonging to the field of ecological control technology. The method involves mechanically rolling Spartina alterniflora to flatten most of it and press it into the tidal flat soil. Then, a biodegradable mulch film is laid on top, and mud slurry is extracted and applied to form a mud slurry cover layer. A mangrove seed interception and planting device is then installed on the mud slurry cover layer to prevent mangrove seeds from growing naturally, thereby reducing the cost of Spartina alterniflora control and improving the efficiency of Spartina alterniflora control.

The invention relates to the technical field of intelligent wearable devices, and particularly discloses an intelligent host and an intelligent wearable device. The intelligent host comprises a bottom support, a host body, a first buckling piece, a second buckling piece and an unlocking part, the bottom support is provided with a buckling structure, the host body is connected to the bottom support, and the first buckling piece and the second buckling piece are rotatably connected to the host body and located on the two sides of the host body respectively. The first buckling piece and the second buckling piece are used for being connected with the buckling structure in a buckling mode, the unlocking part is connected between the first buckling piece and the second buckling piece, when the unlocking part is pressed, the first buckling piece and the second buckling piece can be separated from the buckling structure, and the unlocking part comprises an insulating part; and the insulating part enables an open circuit to be formed between the first buckling piece and the second buckling piece. By adopting the design of the application, the open circuit is formed between the first buckling piece and the second buckling piece, so that a conductive plane is not formed, the interference to the antenna is reduced, and the radio frequency environment of the antenna is optimized.

This utility model discloses a feeding device for male and female drill pipe joints, comprising: a rotating platform, the main body of which is configured as a bearing turntable, a mounting base fixedly installed at the top of the bearing turntable, end limiting plates fixedly installed at both ends inside the mounting base, two mounting shafts symmetrically installed at the top between the two end limiting plates, and a bearing roller fixedly sleeved on the outer wall of the mounting shaft; and a lifting assembly for lifting the male and female drill pipe joints. This utility model uses a controller to uniformly control components such as the rotating motor, drive motor, telescopic cylinder, lifting cylinder, and lifting cylinder, realizing full automation of the material storage, separation, feeding, processing, and unloading process, reducing manual intervention, lowering the difficulty of manual operation, and improving production efficiency; the feeding and storage platform is set with a five-degree inclination angle and a chamfered slope, combined with a retractable feeding slide in the slide structure, so that the workpiece rolls down to the bearing roller at low speed, reducing impact.

The utility model discloses a motorcycle front magnetorheological damper and motorcycle, including working cylinder, guider assembly, piston assembly, floating piston assembly, magnetorheological fluid, outer tube support assembly, ECU control unit and sensor, guider assembly, piston assembly and floating piston assembly are located in the inside of working cylinder, and piston assembly includes built -in solenoid and damping passage, and damping passage penetrates the upper and lower end of piston assembly, and magnetorheological fluid fills the working cavity between guider assembly and floating piston assembly, and, outer tube support assembly is at least partially coated in the outside of working cylinder, and is connected with guider assembly, and ECU control unit and solenoid electric connection are used for the signal adjustment input to solenoid's current according to sensor, like this through solenoid and the combination of magnetorheological fluid, ECU control unit can real -time regulation magnetic field intensity, change the viscosity of magnetorheological fluid to dynamic control damping force.

This utility model discloses a liquid filling system, a power unit, and a vehicle, relating to the field of automation control technology. The liquid filling system includes a storage tank, a delivery pipeline, a pressure detection element, an electromagnetic pump, and a controller. The delivery pipeline is connected to the storage tank; the pressure detection element is located in the delivery pipeline to detect the pressure in the pipeline; the electromagnetic pump is connected to the delivery pipeline and the storage tank to deliver liquid from the storage tank to the delivery pipeline; the controller is electrically connected to the electromagnetic pump and the pressure detection element. The technical solution provided by this utility model improves the service life of the liquid filling system.

This utility model discloses a dynamic speckle detection system embedded inside a laser projector, relating to the field of laser projector technology. It includes: a laser projection light source, a beam combining and homogenizing module, a speckle suppression module, an image modulation module, a speckle measurement module, and a speckle suppression drive module. The speckle suppression module includes a vibrating device, and the speckle measurement module includes an image acquisition unit and a control unit. The optical axis of the speckle measurement module points towards the projection screen. The output of its image acquisition unit is connected to the control unit, and the output of the control unit is connected to the speckle suppression drive module. The output of the speckle suppression drive module drives the vibrating device. This utility model embeds the speckle measurement system inside the laser projector, allowing arbitrary modulation of the speckle suppression module's operating state according to the actual projection pattern. This avoids the speckle suppression module operating at maximum performance for extended periods, reducing laser power consumption and heat dissipation burden, and significantly improving the lifespan of the speckle suppression module.

The application discloses a five-fingered dexterous hand grabbing information generation method based on a self-expanding database, and belongs to the technical field of robot five-fingered dexterous hand grabbing. The method comprises the following steps: constructing an automatic gesture recognition model, an automatic region division model and a grabbing posture recognition model; training the automatic gesture recognition model; training the automatic region division model according to a grabbing task to be performed by a five-fingered dexterous hand and a grabbed object; based on the three models, constructing a grabbing information database and performing self-expansion; and based on the grabbing information database, entering an online state to find grabbing information. Through the application, the three models can quickly recognize grabbing gestures, grabbing regions and grabbing postures in a picture data set, and store the same in a grabbing information database in a complete operation instruction unit; when facing a new grabbing task and a grabbed object, grabbing information can be efficiently and accurately found, and a large amount of picture labeling and training work is avoided.

This invention discloses a fault diagnosis method for wind farm equipment based on neural networks and digital twins. First, multimodal data from multiple equipment units and their sub-units during normal operation are collected and preprocessed. Then, physical-driven and data-driven models are constructed separately and combined to form a digital twin model. Through reinforcement learning, model parameters are dynamically adjusted based on real-time equipment operation and external environmental data. Fault simulation data is injected to construct a fault database, which is used to match fault locations and assign confidence levels when equipment malfunctions. A confidence threshold is set based on the matching probability, and the digital twin model parameters are dynamically adjusted to determine the diagnostic scheme. The multimodal data covers various aspects, including structural health monitoring, and preprocessing includes noise reduction and feature extraction. This method integrates multi-source data, improves diagnostic accuracy and real-time performance, effectively addresses complex fault scenarios, reduces operation and maintenance costs, and ensures stable operation of the wind farm.

This utility model provides an anti-interference continuous water level and flow monitoring device with a protective shell, belonging to the field of water level and flow monitoring protection technology. It includes a monitoring device body and a protective component, which is located outside the monitoring device body. The protective component includes a lower shell threaded to the bottom of the monitoring device body, an upper shell disposed outside the lower shell, and a snap-fit ​​groove at the bottom of the upper shell. A snap-fit ​​ball is movably connected inside the snap-fit ​​groove, and the upper shell is snapped into the lower shell via the snap-fit ​​ball. A reinforcing component is also included. By installing the protective component, rotating the lower shell so that it is threaded to the bottom of the monitoring device body, and then placing the upper shell on top of the monitoring device body, the upper shell pushes the snap-fit ​​ball towards the lower shell via the snap-fit ​​groove, causing the snap-fit ​​ball to snap between the limiting groove and the snap-fit ​​groove of the lower shell, thereby snapping the upper and lower shells together. This improves the maintenance efficiency of the monitoring device.

The application discloses a boiler furnace water wall life prediction method, device and system, electronic equipment and a readable storage medium, which are applied to the technical field of electric power. The method comprises the following steps: determining a sampling area for predicting the residual life of a water wall according to temperature information of the whole area of a boiler furnace water wall; obtaining measurement data of each target water wall tube in a target area matched with a failure mode according to the selected failure mode; and calling a water wall life prediction model to calculate the residual life of the water wall based on the measurement data. The water wall life prediction model is constructed based on aging measurement data and damage measurement data of the water wall tube, and is used for predicting the residual life of the water wall under different failure modes. The application can accurately predict the life of the boiler furnace water wall tube, and effectively guarantees the safe and stable operation of a generator set.

This application provides a display device and its driving method. The display device includes a display panel. The display panel includes a plurality of pixel units. Each pixel unit includes a first sub-pixel and at least one second sub-pixel. The first sub-pixel includes a first driving circuit and a first light-emitting diode. The first driving circuit includes a first pulse amplitude modulation control module, a first transistor, and a second transistor. The second sub-pixel includes a second driving circuit and a second light-emitting diode. The second driving circuit includes a second pulse amplitude modulation control module, a second pulse width modulation control module, a third transistor, and a fourth transistor. The technical solution of this application reduces the number of data signal lines, lowers the complexity of the driving circuit, improves color point stability and brightness uniformity, reduces transient current peaks, and improves the reliability of the display device.