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29results about How to "Avoid area" patented technology

Main iron runner cover of blast furnace

The utility model relates to a blast furnace main iron runner cover which comprises a cover body composed of a shell and a refractory lining, the cover body is arched, a plurality of air holes are formed in the cover body, flaring sections are arranged at the two ends of the cover body, an outer retaining wall and an inner retaining wall are arranged at the two ends in the cover body along the inner wall respectively, the outer retaining wall and the inner retaining wall are arranged at intervals, and the outer retaining wall and the inner retaining wall are the same in structure. Comprising a metal wall plate, the metal wall plate is fixedly connected with a shell, a refractory material layer covers the metal wall plate, the refractory material layer and a refractory material lining form an integrated structure, and an arch-shaped channel is formed in the middle of an outer retaining wall and the middle of an inner retaining wall. The trumpet-shaped flaring can enlarge the coverage area and the shielding area, prevent air convection interference and dust escape, prevent particles entering the main iron runner cover from scattering, and improve the slag iron splashing and sucking effect. The outer retaining wall and the inner retaining wall can forcibly control the spraying speed of molten slag and iron, and kinetic energy and impact force are reduced.
Owner:BENGANG STEEL PLATES CO LTD

A high-power diesel generator set power transmission coupling device

ActiveCN122475486Buniform gapavoid scratches
The application discloses a power transmission coupling device of a high-power diesel generator set, which comprises a moving and carrying trolley, a first axial pushing mechanism arranged on the moving and carrying trolley and located below a motor rotor, a lifting part capable of lifting and a bearing contact part rotatably arranged on the top of the lifting part, a plurality of ball bearings are arranged on the bearing contact part, the bearing contact part is used for bearing the motor rotor in a drooping state and allowing the motor rotor to rotate and reset to axial flatness, and an axial butt joint moving and carrying mechanism arranged on the moving and carrying trolley, the axial butt joint moving and carrying mechanism comprises a butt joint shaft capable of horizontally moving and rotating, and a convex block is arranged on the butt joint shaft. The device solves the problem that the axial flatness of the motor rotor is maintained during the installation process of the motor shell, the uniform gap between the inner wall of the motor shell and the outer circular surface of the motor rotor is maintained, the large-area contact and sliding jam caused by the drooping of the rotor are avoided, the anti-corrosion coating or the insulating layer on the outer surface of the motor rotor is prevented from being scratched and peeled off, and the insulating reliability and the internal cleanliness of the generator are ensured.
Owner:CHANGZHOU JIANNENG PINZHI MECHANICAL & ELECTRICAL CO LTD

Multifunctional static synchronous compensator system and method of operation thereof

The application provides a multifunctional static synchronous compensator system, comprising: a plurality of three-phase converter valves, input ends of each three-phase converter valve being connected to a common DC bus; an energy storage valve, being connected in parallel with the three-phase converter valve, and the plurality of three-phase converter valves sharing the energy storage valve through the common DC bus; a switch breaker device, being arranged between the three-phase converter valve and the energy storage valve; and a control unit, being connected with the plurality of three-phase converter valves, the energy storage valve and the switch breaker device respectively. The application also provides a method for operating the multifunctional static synchronous compensator system. The multifunctional static synchronous compensator system provided by the application adopts back-to-back converter valves, shares energy storage elements through a common DC bus, and connects two AC buses to the two sides of the converter valve, so that the system can support the two AC power grids, greatly save the installation capacity of the energy storage elements in the energy storage valve, and provide power interconnection between the two AC power grids and play a role in tidal flow control.
Owner:DC TECHNICAL CENTER OF STATE GRID CORP OF CHINA +2

Inverter control system, inverter and charging equipment

The invention provides an inversion control system, an inverter and charging equipment. The inversion control system comprises a power supply module, an inversion assembly, a control unit, a feedback module, a protection unit and an automatic adjustment module. The power module is used for providing direct-current power; the inversion assembly is connected with the power supply module and is used for converting the direct-current power supply into an alternating-current power supply; the control unit is connected with the inversion assembly and used for controlling the on-off state of the inversion assembly so as to adjust the voltage and frequency of the output alternating current power supply; the feedback module is connected with the control unit and is used for detecting the voltage and frequency of the output alternating current power supply and feeding back a detection result to the control unit; the protection unit is connected with the control unit and used for protecting the output alternating current power supply when the output alternating current power supply is abnormal; and the automatic adjusting module is used for automatically adjusting the parameters of the inversion assembly according to the operation state and the load requirement of the system so as to optimize the performance of the output power supply. The beneficial effect of the invention is that the method can automatically adapt to and change when the adaptive current is unstable.
Owner:ZHEJIANG YUMA INTELLIGENT TECH CO LTD

Dry and wet feces separation and collection device for cattle and sheep farms

The utility model belongs to the technical field of livestock breeding equipment, particularly relates to an excrement dry-wet separation and collection device for a cattle and sheep farm, and provides the following scheme aiming at the problems that a simple filter screen is adopted for filtering, and for cattle and sheep excrement with large viscosity, the filter screen is easy to block and the separation effect is influenced. The dry-wet feces separation and collection device for the cattle and sheep farm comprises a separation box, and a filter plate and a drainage plate are arranged in the separation box from top to bottom; the utility model has the beneficial effects that the hydraulic rod is connected with the drainage plate, and when the hydraulic rod is started to enable the drainage plate to rise, the top blocks on the surface of the drainage plate, which accurately correspond to the filter holes of the filter plate, can be inserted into the filter holes one by one, so as to quickly and effectively push out blocked impurities, and ensure that the filter plate always keeps good filtering performance; dry-wet preliminary separation is continuously and efficiently achieved, the overall separation efficiency is greatly improved, and the sewage drainage speed is increased through the inclined drainage channel.
Owner:INNER MONGOLIA GREEN & ORGANIC FOOD ASSOC

Multifunctional clamp for robot

The multifunctional clamp for the robot comprises a supporting frame, a suction cup installation base is arranged at the bottom of the supporting frame, a first suction cup is arranged at the bottom of the suction cup installation base, swing arms are symmetrically connected to the two sides of the supporting frame, and second suction cups are connected to the bottoms of the swing arms. The swing arm drives the second suction cup to turn over through the telescopic device. The clamp is provided with the second suction cup and the first suction cup, the small box can be sucked through the second suction cup to be placed in the packaging box, after packaging of the packaging box is completed, the telescopic device drives the swing arm to drive the second suction cup to turn over, and then the packaging box can be sucked through the first suction cup to be transferred to the needed position; by means of the mode, the robot is provided with a single clamp to integrate the double functions of small box adsorption boxing and packaging box transferring, and the problem that in a traditional scheme, two independent robots and clamps need to be arranged, so that the equipment cost is increased, and the occupied area is increased is effectively solved.
Owner:HEFEI LONGYAN SMART TECHNOLOGY CO LTD

A forming die for a heat pipe support

The utility model relates to the technical field of forging die, especially to a forming die of heat pipe support, including the upper die plate and lower die plate of each other corresponding cooperation, the one end of upper die plate faces the lower die plate and is equipped with male die part, the one end of lower die plate faces the upper die plate and is equipped with female die part, when forging and pressing form, male die part and female die part each other butt joint, make male die part insert female die part, form the forming area of heat pipe support, through specific spacing structure between the upper die plate and lower die plate keep the clearance of preset height in the side of female die part, thereby form the extension area, the extension piece of heat pipe support one side is forged and pressed and forms. Above all, the utility model discloses an innovative structure design, reduces the cost, promotes the efficiency, realizes the integrated precision forming of heat pipe support multi -position complex structure, and the product performance and production economy are improved significantly.
Owner:DONGGUAN YAOTENG HARDWARE PRODUCTS CO LTD

A rapid curing device for water-based coatings on aluminum curtain wall panels

This utility model relates to the field of aluminum single-panel production technology and discloses a rapid curing device for water-based coatings on aluminum single-panel curtain walls. The device includes a curing box, with hinges fixedly connected to the outside of the curing box, and a box door fixedly connected to the outside of the hinges. A four-corner fixing mechanism is fixedly connected to the bottom inside the curing box, and a heat dissipation and exhaust mechanism is fixedly connected to the outside of the curing box. The four-corner fixing mechanism includes a processing table, with its bottom fixedly connected to the bottom inside the curing box. A drive assembly and a guide assembly are fixedly connected to the inside of the processing table. In this utility model, the four-corner fixing mechanism uses a drive motor and a cross-shaped rotating block to drive the four-corner clamps to clamp the four corners of the aluminum single-panel. Anti-protrusion suction cups provide reinforcement, achieving stable fixing, preventing displacement and protrusion, ensuring accurate positioning, reducing contact area, avoiding indentation damage, improving curing quality, and reducing processing defects.
Owner:YUNNAN CHONGHENG ALUMINUM CO LTD

Multimedia task processing method and device, computer equipment, chip and chip module

The invention relates to a multimedia task processing method and device, computer equipment, a chip and a chip module, relates to the technical field of systems on chip, and can give consideration to resource utilization efficiency and function expansion flexibility when processing multimedia tasks. The method comprises the following steps: determining a first function module related to a multimedia task from a plurality of function modules of a chip according to a task intention of the multimedia task to be processed; in response to the fact that the first function module comprises a hardware function module and a programmable module, configuring the programmable module according to a pre-acquired software program to obtain a plurality of second function modules; the plurality of second function modules comprise a hardware function module and a configured programmable module; and reconstructing the interconnection paths of the plurality of second function modules, and transmitting data streams of the second function modules among the plurality of second function modules according to the reconstructed first interconnection paths in the process of executing the multimedia task by using the plurality of second function modules.
Owner:SPREADTRUM COMMUNICATION (SHANGHAI) CO LTD

High-temperature spraying shielding area protection method

The invention relates to the field of workpiece spraying, in particular to a high-temperature spraying shielding area protection method which comprises the following steps: S1, taking a first protection sheet and a second protection sheet; s2, a first protection sheet is firstly attached to the workpiece, then a second protection sheet is also attached to the workpiece, one end of the second protection sheet is pressed above the first protection sheet, and the first protection sheet and the second protection sheet jointly cover the shielding area; s3, spraying is conducted, specifically, the paint is sprayed to the workpiece; s4, drying is conducted, specifically, the sprayed workpiece is dried, and the end, located above the first protection piece, of the second protection piece is warped upwards according to the material characteristics and the structural characteristics designed in the invention; s5, tearing the upwarp end of the second protection sheet, and tearing down the second protection sheet; s6, the end, covered with the second protection sheet, of the first protection sheet is torn off, and the first protection sheet is torn off. According to the scheme, the problem that the protective sheet is covered by the coating curing layer and is not easy to tear off after the coating is sprayed is solved.
Owner:CHONGQING TECH & BUSINESS INST +1

Method for manufacturing positive electrode active material for lithium secondary battery

The present invention relates to a method of preparing a positive electrode active material for a lithium secondary battery, and more particularly, to a method of preparing a positive electrode active material for a lithium secondary battery, which is able to improve electrochemical properties and stability by controlling the specific surface area of a positive electrode active material.
Owner:ECOPRO BM CO LTD

Device for precisely dicing and transplanting rice seedlings with soil

The invention discloses a device for precisely dicing and transplanting rice seedlings with soil, and particularly relates to the field of agricultural planting.The device comprises a machine body, a feeding and dicing mechanism is arranged on the machine body, the feeding and dicing mechanism comprises a rack arranged on the machine body, and a longitudinal feeding assembly and a transverse feeding assembly are arranged on the rack; the longitudinal feeding assembly is used for longitudinally conveying seedling trays; a transverse cutting assembly and a longitudinal cutting assembly are further arranged on the rack, the transverse cutting assembly is used for cutting the seedling tray into a plurality of strip-shaped seedling strips in the transverse direction, the transverse feeding assembly is used for transversely conveying the strip-shaped seedling strips, and the longitudinal cutting assembly is used for longitudinally cutting the strip-shaped seedling strips into a plurality of single-plant seedlings. By arranging the feeding and dicing mechanism, the seedling tray is cut step by step, the impact force is small, the vibration is slight, the cutting action is continuous, the interference to adjacent non-cut areas is extremely small in the cutting process, large-area pulling and vibration damage to root systems is avoided, and the damage to seedlings during cutting is reduced.
Owner:冷向亚 +1

Structure beneficial to hollow slab hinge joint pouring and shear connection

The utility model relates to the technical field of bridge design and construction, and provides a structure beneficial to hollow slab hinge joint pouring and shear connection. The hinge joints are formed by a plurality of hollow slabs at certain intervals in the width direction. The hinge joint distance of a traditional hollow slab is increased, the hinge joint participates in shear resistance within the full height range, the U-shaped steel plate is arranged at the position of the bottom plate of the hollow slab, and the steel plate is squeezed into a notch reserved in the bottom plate through elasticity of the steel plate to serve as a bottom die for pouring hinge joint concrete and plays a role of a dripping eave in the operation period. Shear-resistant assemblies which are arranged in a staggered mode are embedded in webs, facing the hinge joints, of the hollow slabs, and each shear-resistant assembly is composed of a perforated steel plate embedded in the corresponding hollow slab, a connecting steel plate and an outwards-extending shear nail. By means of the measures, the shear-resistant area, the pouring quality, the shear-resistant strength and the attractiveness of the hollow slab hinge joint are improved; the technical problems that in the prior art, a gap of only 1 cm exists between every two adjacent hollow plate bottom plates, hinge joint concrete is difficult to pour, the connection strength is poor, and water seepage is prone to occurring are solved.
Owner:CCCC HIGHWAY CONSULTANTS CO LTD

A method for producing colorless moissanite with high efficiency and high productivity

The present invention relates to the technical field of moissanite production, and in particular to a method for manufacturing colorless moissanite with high efficiency and high production capacity, the method comprising the following steps: (S.1) cutting semi-insulating seed crystals to obtain seed crystals with regular shapes; (S.2) coating glue on the surface of the seed crystals with regular shapes and arranging and splicing them to obtain large-sized spliced ​​seed crystals; (S.3) bonding the large-sized spliced ​​seed crystals to the surface of a flexible substrate, and then coating glue on the other side of the flexible substrate; (S.4) bonding the flexible substrate together with the large-sized spliced ​​seed crystals in a physical vapor deposition device, and depositing silicon carbide crystals on the surface of the large-sized spliced ​​seed crystals by physical vapor deposition, thereby forming colorless moissanite. In the present application, small-sized seed crystals are cut and spliced ​​into large-sized spliced ​​seed crystals, and the seeds are bonded to the surface of a flexible substrate for deposition, thereby reducing the loss rate of moissanite while improving the preparation efficiency of colorless moissanite.
Owner:ZHEJIANG JINGYUE SEMICON CO LTD

Superconducting transmission line fault detection method based on superconducting and electromagnetic induction

PendingCN121978466ARealize timely operation and maintenanceavoid timeFault locationFeature vectorSuperconducting transmission lines
The invention discloses a superconducting power transmission line fault detection method based on superconducting and electromagnetic induction, and relates to the technical field of superconducting power transmission line fault detection, and the method comprises the steps: S10, collecting a magnetic field change time sequence of a target superconducting power transmission line at each layout position point in real time through an electromagnetic induction monitoring device; s20, constructing a reference data matrix; s30, extracting key feature vectors of the target superconducting power transmission line at each end point of the fault position section; s40, determining a fault positioning training set of the target superconducting power transmission line at each end point of the fault position section; s50, analyzing a fault positioning position point of the target superconducting power transmission line; s60, predicting the real-time fault index of the target superconducting power transmission line; and S70, carrying out operation and maintenance processing on the target superconducting power transmission line. According to the invention, the special properties of the target superconducting power transmission line are fully considered, and the limitation of a traditional fault detection method in the superconducting power transmission field is overcome.
Owner:RIZHAO POWER TRANSMISSION ENG +1

A Single-Event Latch Evaluation Method for Advanced Process Manufacturing

This invention relates to a single-event latch-up evaluation method for advanced process technologies, comprising: constructing a high-energy particle incident model using the Geant4 Monte Carlo simulation tool; constructing and calibrating a three-dimensional basic device model using the TCAD simulation tool; constructing a standard cell circuit containing parasitic effects, extracting the parasitic thyristor structure of the standard cell circuit, and identifying sensitive regions of the parasitic thyristor structure; performing transient effect simulation on the identified sensitive regions based on the high-energy particle incident model to confirm whether latch-up is triggered; introducing anti-latch-up hardening measures for the sensitive regions, and performing simulation verification on the hardened standard cell circuit under the high-energy particle incident model; if the hardened standard cell circuit does not trigger latch-up, the anti-latch-up hardening measures are deemed effective. This method provides a systematic and automated solution that can fundamentally characterize the complex parasitic effects of advanced devices.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Tensor arithmetic unit based on RISC-V instruction set and intelligent processor

The invention provides a tensor arithmetic unit based on an RISC-V instruction set, and the tensor arithmetic unit comprises a microinstruction splitting and scheduling unit which receives a decoded macroscopic tensor instruction and an operation size parameter thereof, splits the macroscopic tensor instruction into microinstruction sequences according to a fixed physical scale of a reconfigurable calculation array, and transmits the microinstruction sequences to the reconfigurable calculation array; a zigzag traversal sequence and microinstruction scheduling are achieved through quintuple hardware circulation, and the loading, using and replacing sequence of the data blocks in the block register array is planned; the reconfigurable computing array is used for executing matrix multiply-accumulate operation of various data formats by designing a reconfigurable data path and fusing and multiplexing a floating point multiplier and a multi-precision accumulation tree under data paths with different bit widths; and the hardware multi-buffer unit is a multi-buffer architecture automatically managed by hardware and is matched with a zigzag traversal sequence to realize pipeline overlapping of data prefetching and calculation execution. The invention further provides an intelligent processor. Therefore, the invention can efficiently execute tensor operation with variable precision and variable scale.
Owner:INST OF COMPUTING TECH CHINESE ACAD OF SCI

Intelligent fire extinguishing system for parking of new energy automobile

The utility model relates to the technical field of new energy automobiles, in particular to an intelligent fire extinguishing system for parking of a new energy automobile, which comprises a plurality of parking units which are independently arranged and are connected with an MCU (Microprogrammed Control Unit) control center, and the MCU control center is connected with a remote monitoring terminal; a cofferdam is arranged on the parking ground, a temperature sensor and an infrared sensor are arranged on the surface of the parking ground, a smoke sensor is arranged on the bottom face of the parking ceiling, the smoke sensor, the temperature sensor and the infrared sensor are connected with the MCU control center, a water inlet pipe is arranged on the parking ground, and an electromagnetic valve is arranged on the water inlet pipe. And the electromagnetic valve is connected with the MCU control center. Compared with the prior art, the intelligent fire extinguishing system for parking of the new energy automobile can quickly and timely discover abnormal conditions of the automobile and extinguish fire by adopting effective measures, so that the safety of other parts of the automobile is protected to the maximum extent, and accident loss and social influence are reduced; and environmental pollution caused by a large amount of fire-extinguishing sewage is avoided.
Owner:SHENZHEN HUIZHI SAFETY TECH CO LTD

Communication loop circuit fault detection method in communication network

PendingCN121984581AReliable executionEliminate logical topologyElectromagnetic transmissionTelecommunicationsOptical Module
The invention belongs to the technical field of communication networks, and provides a communication loop fault detection method in a communication network, which comprises the following steps of: starting a link layer neighbor discovery protocol at each physical port of looped network node equipment, and acquiring an opposite-end neighbor equipment identifier and a port identifier which are actually connected with each port; progressive faults such as laser aging and emission light power degradation can be found in time by monitoring the sending light power value of the optical module and the bias current value of the laser in real time, the blind area that a traditional detection mechanism only depends on receiving light power monitoring is broken through, meanwhile, a secondary verification mechanism is arranged, and after degradation of the optical module is monitored, the detection accuracy is improved. According to the method, protection switching is not executed immediately, and whether the link has an actual bidirectional communication fault is further verified through the bidirectional connectivity detection protocol, so that misjudgment caused by short-time fluctuation of parameters of the optical module is effectively avoided, early warning of potential faults is realized, and the reliability of the optical module is improved. And the stability of the network when the optical module is degraded but the link can still perform normal communication is ensured.
Owner:SHANGHAI NIU ENZYME TECHNOLOGY CO LTD

Carbon dioxide trapping and purifying device and methanol production system

The invention discloses a carbon dioxide trapping and purifying device which comprises a low-temperature separation cold box unit, the low-temperature separation cold box unit comprises a cold box, a first heat exchanger and a carbon dioxide purifying tower, the first heat exchanger and the carbon dioxide purifying tower are arranged in the cold box, a condenser is arranged at the top of the carbon dioxide purifying tower, and the first heat exchanger is provided with a first pipeline and a second pipeline. The first pipeline is used for feeding crude carbon dioxide fluid into the first heat exchanger, the second pipeline is used for feeding the crude carbon dioxide fluid subjected to heat exchange by the first heat exchanger into the middle part of the carbon dioxide purifying tower to be separated into a gas-phase component and a liquid-phase component, and the gas-phase component is discharged out of the cold box after the cooling capacity of the gas-phase component is recovered by the first heat exchanger; one part of the liquid-phase component flows back to the lower part of the carbon dioxide purification tower after being reheated by a first heat exchanger through a first shunting pipe; and the other part of the liquid-phase component flows to the condenser and the first heat exchanger through the second flow dividing pipe and then is subjected to gas compression, loss of cooling capacity is avoided, the condenser is placed in the carbon dioxide purification tower, the space in a cold box is saved, and the cost is saved.
Owner:HANGZHOU OXYGEN PLANT GRP CO LTD

Dense matching method and system based on superpixels and lidar geometric perception

ActiveCN122454066BHigh precisionReduce deletion
The application discloses a dense matching method and system based on superpixels and LiDAR geometric perception, and solves the problem of poor point cloud reconstruction effect in the prior art.The application projects point clouds to generate a sparse depth map, and divides an image into a plurality of superpixel regions; then, a plane is fitted for each superpixel region to form a stable geometric prior, thereby avoiding random initial errors and error accumulation; then, pixels are divided into reliable and unreliable categories according to the reliability of the fitted plane, and a differentiated propagation strategy is used for plane estimation; in this way, the classified propagation avoids over-smoothing of the depth map and large-area holes, and the superpixel plane geometric constraint is introduced into the joint cost, thereby enhancing the anti-interference ability under the conditions of light variation and weak texture; thus, the matching robustness and depth integrity under the conditions of weak texture and complex light in a large-scale urban scene are significantly improved, and the generated point cloud is more accurate, less missing and more detailed.
Owner:四川省第九地质大队 +2

Photovoltaic module installation structure convenient to install

The utility model discloses a photovoltaic assembly installation structure convenient to install, two photovoltaic assemblies are installed on an installation beam side by side, a pressing plate assembly is connected between the two photovoltaic assemblies, and the pressing plate assembly comprises a pressing plate and a fastener connecting the pressing plate and the installation beam. A self-locking structure is arranged between the frame of one of the two photovoltaic modules and the pressing plate, and the frame of the other photovoltaic module is connected with the pressing plate through the self-locking structure or pressed on the mounting beam by the pressing plate. According to the utility model, the advantages of adopting the self-locking structure for installation are that the photovoltaic assembly can be directly placed in place, the self-locking structure can realize self-locking fixation, additional fixation through other fasteners is not needed, and constructors do not need to cross the photovoltaic assembly for installation. Therefore, the installation efficiency of the photovoltaic module can be improved, the construction speed of a power station is accelerated, the damage probability of the module is reduced, the construction difficulty is reduced, and the risk of constructors is effectively reduced.
Owner:CHINT ANNENG DIGITAL POWER (ZHEJIANG) CO LTD

A cross feed guide for a fully automatic on-site foaming device

ActiveCN224588440Uwell mixedConvey evenly
This utility model discloses a cross-shaped guide frame for a fully automatic on-site foaming device, relating to the field of foaming device technology. It includes a spraying device body, with an A channel and a B channel on one side. The A channel includes a front end and a rear end, and the B channel also includes a front end and a rear end. Cross-shaped guide frames A and B are fixedly connected inside the A and B channels, respectively. This utility model uses the A and B cross-shaped guide frames to form multiple flow channels with the inner walls of the channels, providing ample flow space for the two-component raw materials. This avoids the problem of reduced flow cross-sectional area or blockage caused by the heating wire pressing against the rear end of the channel due to thermal expansion, ensuring uniform mixing and stable conveying of the raw materials, improving foaming quality and the long-term stability of the device.
Owner:HANYIN (ANHUI) NEW MATERIAL TECH CO LTD

Clock tree synthesis method based on collaborative optimization of clustering and reinforcement learning

ActiveCN121351757BImprove routing balanceconvenient and accurate
The application discloses a clock tree synthesis method based on clustering and reinforcement learning collaborative optimization, and relates to the technical field of integrated circuit design and electronic design automation. The method comprises the following steps: firstly, reading the coordinates of flip-flops, the position of clock sources and design constraint parameters in a circuit; secondly, clustering and grouping the flip-flops in the circuit through a clustering method, generating an initial hierarchical clock tree topology and determining the candidate insertion positions of buffers; thirdly, constructing a reinforcement learning environment, defining a state space, an action space and a multi-objective reward function; fourthly, within displacement constraints, learning a flip-flop relocation strategy and a buffer insertion and removal strategy by maintaining independent moving Q tables and action Q tables; and finally, evaluating performances such as clock skew and delay, generating a synthesis performance evaluation result, and iteratively optimizing and judging through a closed-loop feedback mechanism. The application effectively controls clock skew and delay, avoids the local optimal problem of traditional methods, and improves the clock tree synthesis quality and automation efficiency.
Owner:BEIJING UNIV OF TECH

On-chip temperature sensing method for integrated circuit heat distribution monitoring

The invention discloses an on-chip temperature sensing method for monitoring heat distribution of an integrated circuit, belongs to the technical field of semiconductors, and aims to solve the problems of insufficient temporal-spatial resolution, large thermal field reconstruction deviation, high hardware overhead and the like in the prior art. According to the method, a microstructure thermal response unit composed of a high-thermal-conductivity metal layer and a low-thermal-capacity dielectric layer is embedded in a chip, a thermal time constant of the microstructure thermal response unit serves as a dynamic sensing parameter, and a three-level framework of a basic sensing layer, a regional polymerization layer and a global coordination layer is constructed; and in combination with pulse heating-cooling time sequence measurement, weighted fusion based on heat flow continuity constraint and a data assimilation algorithm based on partial differential equation constraint, high-precision real-time reconstruction of the three-dimensional temperature field is realized. According to the scheme, additional process masks are not needed, the area overhead is lower than 0.5%, and the submillimeter-level space resolution and the microsecond-level time resolution are both achieved.
Owner:CHENGDU POLYTECHNIC

A three-phase terminal box with stepped layers

ActiveCN224520599USolve the wiring confusionSolve maintenance difficultiesControl theoryJunction box
The utility model relates to a three -phase terminal box of ladder layered formula, and the box body integratedly forms and is equipped with the slot position platform of three -step structure, and the slot position platform includes first wiring platform, second wiring platform and third wiring platform in proper order, and the height gap for the flow bar is left between two adjacent ones, first wiring platform is equipped with three firewire input slots to the one side in the box, second wiring platform is equipped with three firewire output slots to the one side out of the box near one end of first wiring platform, zero line input slot and ground wire input slot are equipped to the one side in the box at the other end of second wiring platform, and zero line output slot and ground wire output slot are equipped to the one side out of the box at third wiring platform. The utility model solves the wiring confusion and maintenance difficulty caused by the existing wiring terminal concentration, avoids the wire winding, reduces the wiring error rate, is convenient for positioning fault point, makes the flow bar maintain standard length and straight form, ensures the current transmission efficiency, saves the assembly step, reduces the cost, enhances the overall performance and reliability of wiring mechanism.
Owner:SHENZHEN CONNECTION ELECTRONIC CO LTD +1

Actinic ray-curable inkjet ink composition

ActiveEP4364950A4Improve relationshipmaintain good propertiesDuplicating/marking methodsInks
While inkjet ink compositions designed to reduce migration are known, an object of the present invention is to provide an inkjet ink composition that provides, in addition to the above, sufficient adhesion to resin films as well as excellent LED curability, while allowing for printing on films used for food packaging that are subject to more stringent property requirements. As a solution, an active energy ray-curable inkjet ink composition satisfying all of the requirements of (A) to (E) below is provided. (A) it contains hydroxy group-containing monofunctional (meth)acrylates by 20.0 to 60.0% by mass in the total amount of all polymerizable components. (B) it contains polyfunctional monomers having ether bonds. (C) it contains amine-modified oligomers by 10.0 to 50.0% by mass in the total amount of all polymerizable components. (D) it contains ethyl phenyl(2,4,6-trimethylbenzoyl)phosphinate as a polymerization initiator. (E) it contains polymeric sensitizers.
Owner:SAKATA INX