18results about How to "Choose flexible" patented technology

The invention relates to a method for preparing spinnable mesophase pitch and carbon fibers from coal tar fractions, and belongs to the technical field of carbon materials. The method comprises the following steps: distilling and extracting aromatic hydrocarbon fractions in different distillation ranges from coal tar, activating the aromatic hydrocarbon fractions in one or more distillation ranges as raw materials, and carrying out non-catalytic polymerization reaction on one or more activated coal tar fractions and one or more non-activated coal tar fractions at a low temperature, and performing high-temperature polymerization reaction to obtain matrix asphalt, and performing reduced pressure distillation treatment, solvent extraction or inert gas purging to obtain the spinnable mesophase asphalt. The spinnable mesophase pitch has wide-area streamline optical texture distribution, good directional arrangement and orderliness, the mesophase content can reach 100%, the softening point is low, the coking value is high, the ash content is low, and the structure is controllable. The carbon fiber prepared based on the mesophase pitch is short in required oxidation time and has excellent performance.

The invention discloses a microphone and electronic equipment, and relates to the technical field of microphones, the microphone comprises a substrate, a shell, a chip assembly and an electronic component, the substrate comprises a top layer, a first conductive layer, an insulating layer and a second conductive layer which are sequentially arranged along a first direction; the first direction is the direction along the thickness of the substrate; the shell covers the substrate, the shell and the substrate define an accommodating cavity, and the substrate is provided with a pickup hole communicated with the accommodating cavity; the chip assembly comprises a pickup module and a signal processing module which are in signal connection, and the pickup module is located in the accommodating cavity; the electronic component is electrically connected with the signal processing module; the electronic component is embedded in the insulating layer, and the two ends of the electronic component are electrically connected with the first conductive layer and the second conductive layer respectively. The electronic component is embedded in the insulating layer between the first conductive layer and the second conductive layer, so that the specification of the electronic component can be flexibly selected, the thickness of the substrate is not additionally increased, and the selectable specification of the electronic component is increased.

The present invention discloses an arch foot reinforcement structure and construction method for a subway station with an arch cover method. The arch foot reinforcement structure includes two layers of arch cover support, arch foot piles arranged at the arch feet on the left and right sides of the main body of the subway station arch cover, and an arch foot longitudinal beam connected to the arch foot piles. The arch foot piles are arranged along the tangent of the arch foot. The arch foot piles are composed of a steel frame and fine stone concrete poured into the steel frame and the pile hole. The present invention is a reinforcement system combining the arch foot piles with the longitudinal beams. The arch foot piles and the first and second layers of the arch cover support are connected by the longitudinal beams. The structure has good integrity and strong resistance to local stress and deformation. It can effectively reinforce and protect the deep and broken surrounding rock at the arch foot. In addition, the construction method of the arch foot reinforcement structure provided by the present invention has flexible selection of reinforcement scope and implementation object, which is aimed at the broken rock layer of the arch foot of the supporting arch cover, and will not have an overall impact, nor will it affect the advantages of the arch cover method in terms of project cost, construction period, implementation efficiency, mechanized operation, etc.

The invention belongs to the technical field of anti-seismic structures, and particularly discloses a multidirectional strong-reset damping support which comprises a supporting part, an energy transfer part and a damping part, the supporting part is used for supporting a building in the vertical direction and comprises an elastic base, a top plate and a bottom plate, the top plate is arranged at the top of the elastic base and used for being connected with an upper structural part of the building, and the bottom plate is arranged at the bottom of the elastic base. The bottom plate is arranged at the bottom of the elastic base and used for being connected with a foundation of a building. The energy transmission part comprises at least one set of steering parts, and each steering part comprises an inhaul cable and a baffle. The damping parts are in one-to-one correspondence with the steering parts and arranged in the transverse damping area, each damping part is of a deformable structure, is provided with an elastic end and is fixed to the bottom plate, and the elastic ends are connected with the baffles. The supporting part, the energy transfer part and the shock absorption part are utilized to integrate supporting, energy dissipation and reset functions, the problem that connection of energy dissipation and shock absorption components needs to be specially designed in the design process is solved, and more convenient anti-seismic reinforcement is carried out on an existing shock absorption and isolation structure adopting a support.

The invention discloses a method for solving the original observation equation of a GNSS observation station network, and belongs to the field of satellite navigation technology. The method is based on the multi-frequency pseudorange and phase observation data of the global or regional GNSS tracking station network, and constructs a full-rank non-difference non-combined full parameter estimation model by adding constraints, thereby realizing the unified estimation of positioning enhancement parameters such as receiver clock error, satellite clock error, tropospheric delay, ionospheric delay and base frequency satellite phase deviation; by giving weights to the parameters to be estimated, the benchmark for parameter estimation can be flexibly selected and adjusted, and the problem of selecting a single benchmark for phase deviation estimation when solving the original non-difference non-combined observation equation is effectively solved. The parameters estimated by this method can be used as PPP-RTK high-precision positioning enhancement services, and can also be used for the service needs of traditional positioning modes such as PPP and RTK.

The utility model relates to the technical field of electric power facilities, in particular to a power transmission line drilling steel frame which comprises a drilling wire steel frame, a drilling ground wire steel frame and a tower body gusset plate. The through-drilling wire steel frame and the through-drilling ground wire steel frame are connected to the tower body gusset plate through bolts; the drilling wire steel frame and the drilling ground wire steel frame are symmetrically arranged on the two sides of the existing tower body. The through-drilling wire steel frame comprises an upper-layer through-drilling wire steel frame and a lower-layer through-drilling wire steel frame; front and rear side middle-phase tension strings are respectively arranged on the front and rear sides of the drilling upper-layer wire steel frame; front and rear side edge phase tension strings and edge phase jumper strings are respectively arranged on the front and rear sides of the drilling lower layer wire steel frame; ground wire tension strings are arranged on the front side and the rear side of the drilling ground wire steel frame respectively, a set of middle-phase jumper suspension strings are hung at the end of the outer side of the drilling ground wire steel frame, and ground wire tension strings are arranged on the front side and the rear side of the drilling ground wire steel frame respectively. According to the scheme, a newly-built line is directly drilled through an existing line through the steel frame, land occupation is not needed, and the original line does not need to be heightened.

The application discloses a kind of building energy consumption regulation and control optimization method, system, terminal and medium, it is related to energy consumption regulation and control technical field, its technical scheme main point is: obtaining the output fluctuation data of generator set and the power load fluctuation data of target building;Determine the upper limit value and lower limit value of power load of target building at corresponding target time;Determine the dispatching optimization interval of target building at corresponding time;With the sum of all target buildings control optimization value minimum as optimization goal to establish control optimization model;Solving obtains the energy consumption regulation and control strategy of each target building.The application uses power load control, both considers the fluctuation trend brought by the randomness and uncertainty of new energy in power system in generation side, also considers the demand change trend of each building in power consumption side, can realize the balanced distribution of each building energy consumption under the demand intensity of each building with small error.

The invention provides a step frequency radar system, a system time delay determination method and a radar ranging method. The step frequency radar system is provided with at least two PLL circuits used for generating local oscillation signals, and local oscillation frequencies configured for the PLL circuits form an arithmetic progression of which the tolerance is the step length of the local oscillation frequencies. In the process of transmitting the radar signal, the control module can gate one of the PLL circuits according to the current local oscillation frequency and configure the local oscillation frequencies of the other PLL circuits in advance, so that the local oscillation frequencies of the other PLL circuits can be adjusted in advance. And under the condition that the current local frequency needs frequency hopping, the control module can realize frequency switching by gating the other PLL circuit. Therefore, through alternate output of a plurality of PLL circuits, rapid switching of frequency points can be realized, system errors can be accurately measured, and the advantages of high frequency stability, good phase noise, less stray, low cost and the like can be taken into account.

An armrest box assembly with an adjustable storage space and a vehicle, the armrest box assembly comprises a main body, a connecting assembly and an extended storage part, the main body comprises the storage space, the extended storage part comprises at least one storage area, the extended storage part is detachably connected with the main body through the connecting assembly, the connecting assembly comprises a functional plate and a mounting part, and the functional plate is detachably connected with the mounting part through the connecting assembly. The main body is provided with a supporting seat matched with the function plate, the function plate is installed on the supporting seat, the installation part is detachably connected with the function plate, the installation part is connected with the expansion storage part, and the installation part is used for installing the expansion storage part on the function plate. The size of the storage space of the armrest box is adjusted, and flexibility is high.

This invention discloses a focal plane detection method based on pixel difference in a confocal optical path. This method utilizes two image sensors positioned at the front and back focal points in a confocal differential optical path. By differentiating the defocused spot shapes acquired by the two image sensors and combining this with post-processing, real-time detection, tracking, and compensation of the focal plane are achieved. A focal plane detection device based on pixel difference in a confocal optical path is also disclosed. This device includes a light source, a filtering and collimating device, a half-wave plate, a polarizing beam splitter, a quarter-wave plate, an objective lens, and a sample, arranged sequentially along the central optical axis of the optical system. A converging lens, a beam splitter, and two image sensors are also arranged coaxially with the polarizing beam splitter. Compared with other existing focal plane detection methods, this invention has the advantages of simple device design, strong anti-interference capability, and the ability to achieve high-precision focal plane tracking, positioning, and compensation.

The application discloses a lattice public key data encryption and decryption method and a key encapsulation method based on vector decoding. The method comprises the following steps: obtaining first target ciphertext data according to predetermined plaintext data, a first predetermined encryption method, a first target public key and a predetermined interference term, so that lattice public key data encryption can be realized; obtaining target plaintext data according to the first target ciphertext data, a first target private key and a predetermined decryption method, so that lattice public key data decryption can be realized. Meanwhile, the application also proposes a variant problem of a ring learning with errors problem (RLWE), namely, a subset-sum parity RLWE (sspRLWE) problem, and further optimizes the lattice public key data encryption method based on vector decoding in the application based on the variant problem. The public key encryption method and the key encapsulation method designed in the application have the characteristics and advantages of provable security, resistance to quantum computer attacks, short public key and ciphertext length, high calculation efficiency, low decryption failure rate, flexible parameter selection and the like.

The invention relates to a test circuit and a working method thereof, the test circuit is used for carrying out performance test on a standard unit, the test circuit comprises even number stages of units to be tested which are connected in series, each unit to be tested comprises a main test unit, each main test unit comprises a main test input end and a main test output end, and the main test input end is connected with the main test output end; the main measurement output end of each main measurement unit is connected with the main measurement input end of the next stage of main measurement unit; the output end of the anti-phase voltage source is connected with the main measurement input end of the first-stage main measurement unit, the input end of the anti-phase voltage source is connected with the main measurement output end of the last-stage main measurement unit, and the anti-phase voltage source and the even-stage units to be measured form an annular oscillation loop. The test circuit can test the units to be tested of all combinational logic units, and the application range of the test circuit is expanded.

The invention provides a dynamic penetration testing device and method based on effective penetration energy, and relates to geotechnical engineering reconnaissance, the device comprises a support, a displacement sensor, a guide rod, a center penetrating hammer, a hammer seat, a probe rod, a pipe wrench, a cable, a processor, an energy collection connector and the like, and a strain and acceleration sensor is arranged in the energy collection connector; the strain and acceleration sensor is used for collecting the strain and acceleration fed back by the penetration of the sounding probe into the soil body, and calculating the effective penetration energy of the sounding probe in the hammering process based on the data. The method has the beneficial effects that the effective penetration energy in the successive hammering process is accurately obtained, and fine division of a stratum structure is facilitated; absorption and dissipation of hammering energy by hole depth, side friction resistance and drill rod vibration are eliminated in measurement data, and the measurement data are not limited by the penetration depth in the industry specification any more; proper hammer weight and drop distance can be flexibly selected according to the actual test depth; the automation degree is high, automatic data acquisition and processing can be achieved, and manual errors are effectively avoided.

The utility model belongs to heat exchange technical field discloses a kind of heat exchanger and heating equipment.The heat exchanger includes at least two stacked heat exchange components, the heat exchange component includes heat exchange pipe and fin structure, the heat exchange pipe of adjacent two heat exchange components is communicated;The fin structure is formed by die casting process and is connected with the heat exchange pipe, and the melting point of the fin structure is lower than the melting point of the heat exchange pipe, and the fin structure of each heat exchange component is separately formed.Fin structure is formed by die casting process, and by pre-buried heat exchange pipe in mould, heat exchange pipe is connected with fin structure while forming fin structure, without additional welding fixed fin structure, so that the thermal resistance between fin structure and heat exchange pipe is substantially zero, which is conducive to improving heat exchange efficiency;Fin structure in each heat exchange component is separately formed by die casting process, which can reduce the height of fin formed by single die casting, and is conducive to improving die casting quality.

The invention relates to an out-of-plane / in-plane differential response flexible sensing material and a preparation method thereof, and belongs to the field of flexible sensing materials. The chemical formula of the flexible sensing material is xAg / PDMS, the numerical value of x is 0-60 vol% and is not 0, x is the volume ratio of Ag to PDMS, the particle size range of Ag nanoparticles is 0.01-20 [mu] m, the functional auxiliary material of the flexible sensing material is a perovskite structure ferroelectric ceramic material (BCZT), and the volume ratio of Ag to BCZT is 3: 100. According to the flexible sensing material, silver nanoparticles and PDMS are compounded, and the silver nanoparticles are regulated by means of an external electric field to form Ag nanoparticle columns which are aggregated in the out-of-plane direction and are isolated from one another, so that the Ag nanoparticles are arranged in a chain shape in the out-of-plane direction, and differential response of high out-of-plane sensitivity / insensitive in-plane sensitivity is achieved; the construction of a quasi-conductive network is realized under the condition of low filling amount, meanwhile, good mechanical flexibility of the material is maintained, and the specific types and geometrical shapes of the conductive particles can be flexibly selected according to actual requirements.

A semiconductor structure and a forming method thereof, the forming method comprising: providing a substrate, including a substrate and a bottom fin material layer on the substrate, the substrate including a first device region and a second device region; forming a first fin material layer on the bottom fin material layer, the material of the first fin material layer being different from the material of the bottom fin material layer; removing the first fin material layer located at the second device region to form an opening exposing a top of the bottom fin material layer; forming a second fin material layer in the opening; and performing a fin patterning process to pattern the bottom fin material layer into a bottom fin, the first fin material layer into a first device fin standing on the bottom fin of the first device region, and the second fin material layer into a second device fin standing on the bottom fin of the second device region. The formed second device fin and the contact surface of the first device fin with the bottom fin are both relatively flat, improving the height consistency of the second device fin and the first device fin.

This invention discloses a method for generating abnormal samples in a distribution network based on a dynamic balance between an artificial intelligence model and a mechanistic model. The method includes: acquiring time-series data of the distribution network's operating status and a sample training dataset for the artificial intelligence model; processing the time-series data and the sample training dataset to obtain time-series correlation coefficients and accuracy correlation coefficients; calibrating continuous initial abnormal samples based on the accuracy correlation coefficients, the rate of change of real-time operating status mutation indicators, and response deviation values ​​to obtain a first calibrated abnormal sample set; and calibrating discontinuous initial abnormal samples based on time-series repair parameters, the rate of change of operating status mutation indicators, the accuracy correlation coefficients, and response deviation values ​​to obtain a second calibrated abnormal sample set. The generated samples conform to the physical operating logic of the distribution network and possess clear abnormal characteristic identification.

The invention discloses an eye movement data mapping method and device, edge computing equipment and a medium, and belongs to the technical field of image processing. The method comprises the following steps: acquiring a first image block including eye movement data in an eye movement image; calculating a coordinate mapping relation between the eye movement image and the target image according to the first image block in response to the condition that the first image block meets a preset condition; and mapping the eye movement data to the target image according to the coordinate mapping relation. According to the embodiment of the invention, the image blocks containing the eye movement data are acquired, and the coordinate mapping relation between the eye movement image and the target image is calculated when the image blocks meet the preset conditions, so that the calculation process is more concerned on the region related to the eye movement data in the image instead of the whole eye movement image; the influence of environment change on the calculation process is reduced, and the calculation precision of the coordinate mapping relation is improved, so that the accuracy of eye movement tracking is improved.