21results about How to "With technical effect" patented technology

This invention belongs to the field of time measurement technology and discloses a resource-saving short-chain time-to-digital converter and its conversion method. It utilizes a delay unit and conversion circuit to build a local oscillator, which flips the output state at fixed time intervals during a continuous high-level input signal. The time at which the local oscillator causes the level to flip is known. The time of the last flip is obtained using TDL and TDC, and the start and last flip times are obtained by recording the number of flips of the local oscillator. The resource-saving short-chain time-to-digital converter provided by this invention has good linearity, completely avoiding nonlinearity problems caused by inconsistent line lengths introduced across multiple resource blocks. The resource-saving short-chain time-to-digital converter has a simple and flexible structure, low resource consumption, and high utilization rate. It has good robustness and can be directly ported between different channels or even devices, and can correct temperature-induced drift online.

The present invention belongs to the technical field of integrated stoves, and discloses an integrated stove fan system with equivalent left and right air volume and a control method thereof, wherein a two-way air outlet volute is installed at the bottom of the inner side of the integrated stove body, a left air outlet hood and a right air outlet hood are respectively installed at the left and right outlet outer ends of the two-way air outlet volute, and an impeller is installed concentrically with the two-way air outlet volute; a valve plate is located inside the two-way air outlet volute, and is used to block the air outlet; a valve plate connecting rod is connected to the valve plate, and is used to pull the valve plate to contract; a stepping motor is connected to the valve plate connecting rod, and is used to drive the valve plate to rotate to the left air outlet or the right air outlet position. In the present invention, the integrity of the volute profile can be ensured by using the valve plate and the air outlet hood in conjunction with the two-way air outlet volute, and the resistance loss of gas flow can be reduced, so that the left and right equal air volume exhaust of the integrated stove can be realized; an electromagnetic adsorption connecting rod device is adopted, and the left and right equivalent air outlet switching can be realized without disassembling the entire integrated stove, and the operation method is simple and convenient.

The application provides a rotatable side outlet sensor and a train running part fault monitoring system, and relates to the technical field of train running part fault monitoring. The sensor comprises a base shell, a sensor body, an outlet structure and an elastic device. The sensor body is rotatably arranged relative to the base shell, and comprises a sensor shell, a circuit board arranged in the sensor shell, and a vibration sensitive device mounted on the circuit board. The outlet structure is mounted on the side wall of the sensor body through a jack. The elastic device is arranged in compression along the axial direction between the base shell and the sensor shell. Under the pre-tightening force of the elastic device, the base shell and the sensor shell are in axial close contact to form a vibration signal transmission interface, so that the vibration signal can be effectively transmitted from the equipment to be measured to the vibration sensitive device through the base shell and the sensor shell, thereby realizing effective monitoring of the vibration signal. The sensor realizes effective monitoring of the vibration signal while maintaining the rotatability of the outlet direction.

The invention discloses a light-emitting device and a preparation method thereof, a light-emitting module and a display device.The light-emitting device comprises a conductive connecting layer and N light-emitting units arranged at intervals, N is a positive integer and is larger than or equal to 2, N is an even number, and the adjacent light-emitting units are connected in series through the conductive connecting layer; the N light-emitting units comprise N / 2 odd-number light-emitting units and N / 2 even-number light-emitting units, the odd-number light-emitting units and the even-number light-emitting units are alternately arranged in the series connection direction, and a second semiconductor layer, an active layer and a first semiconductor layer are sequentially stacked on each odd-number light-emitting unit from the light-emitting face to the back face; a first semiconductor layer, an active layer and a second semiconductor layer are sequentially stacked on the even-number light-emitting unit from the light-emitting face to the back face. The light-emitting device is high in voltage and low in current, the size of the light-emitting device can be further reduced, and the light-emitting efficiency is improved.

The application belongs to the technical field of signal transmission, and discloses a method for eliminating analog signal transmission error through digital compensation, which specifically comprises the following steps: in addition to the original signal transmitting circuit part, a signal detecting part composed of MCU, ADC and a communication module is arranged at the signal transmitting end; a signal detecting part composed of MCU and ADC communication module and a control part capable of controlling the signal at the output end to be offset and gain varied are arranged at the signal receiving end; the signal at the receiving end is collected by the MCU to compare with the data of the transmitting end communication module, and the difference between the two data is calculated to obtain the correction value of the amplitude and offset; the gain and offset of the signal are changed by controlling the offset and gain circuit part at the receiving end, so that the transmission error is eliminated, and the gain and offset control method is realized by using DAC, PGA and other components; the deviation of the frequency response can also be calculated according to the requirement, and is corrected by the gain and offset control circuit part.

The present invention belongs to the technical field of alkali metal ion batteries, and discloses a negative electrode of a lithium / sodium ion battery with a dual gradient structure and a preparation method thereof. The dual gradient negative electrode is a double gradient sandwich structure constructed by a current collector modified with a strong lithium / sodium-philic conductive layer at the bottom of the negative electrode, an active layer in the middle of the negative electrode, and a lithium / sodium-phobic insulating passivation layer at the top of the negative electrode, wherein the bottom of the negative electrode is lithium / sodium-philic and conductive, the middle negative electrode active layer has moderate lithium / sodium-philicity and conductivity, and the top is lithium / sodium-phobic and insulating. By introducing a conductive and lithium / sodium-philic component at the bottom of the negative electrode with a low lithium / sodium nucleation barrier, after the negative electrode active layer accommodates lithium / sodium, it can induce excess lithium / sodium ions to nucleate and grow from the bottom of the negative electrode, avoid lithium / sodium precipitation on the surface of the negative electrode, effectively utilize the lower layer space of the negative electrode, realize dual-phase lithium / sodium storage, and greatly improve the specific capacity and cycle life of the negative electrode. At the same time, the insulating lithium-repellent passivation layer on the negative electrode surface is not only thin, but also well preserves the original pore structure of the negative electrode active layer, and has little effect on the wettability of the electrolyte and the diffusion process of lithium / sodium ions. Moreover, the insulating lithium-repellent property effectively hinders the reduction growth of lithium / sodium on the electrode surface. The synergistic effect of the dual-gradient structure not only greatly improves the specific capacity of the negative electrode through the dual-phase lithium / sodium storage characteristics, but also prevents the occurrence of lithium / sodium precipitation on the surface, significantly improving the cycle performance of the battery.

This application relates to a composite hot water supply system and control method. The composite hot water supply system includes a heat pump unit, a photovoltaic heating device, an electric heating device, a heated water tank, an insulated water tank, a water supply terminal, and a control component, all connected via a piping assembly. The heat pump unit and the photovoltaic heating device are connected in parallel and then in series with the electric heating device. A first series branch in the piping assembly is connected to the outlet of the heat pump unit and the inlet of the photovoltaic heating device, respectively. A second series branch is connected to the outlet of the photovoltaic heating device and the inlet of the heat pump unit, respectively. The control component controls the flow direction of water within the piping assembly. The composite hot water supply system provided by this application, through the switching of the connection states of the heat pump unit, photovoltaic heating device, and electric heating device by the control component, can switch to the optimal operating mode according to the operating conditions, ensuring hot water demand while maximizing energy utilization and reducing the energy consumption of the composite hot water supply system.

The application belongs to the technical field of spaceflight, and discloses a satellite electromagnetic permanent magnet integrated connection separation and recovery device and a control method thereof. The satellite electromagnetic permanent magnet integrated connection separation and recovery device is provided with a curved surface permanent magnet interface on a micro-nano satellite. The curved surface permanent magnet interface is connected with a curved surface electromagnetic interface. The curved surface electromagnetic interface is arranged on a satellite ring. The application improves the carrying capacity of spaceflight equipment. The satellite ring can provide multiple micro-nano satellite connection separation and recovery interfaces, and can simultaneously release, separate and dock and recover multiple micro-nano satellites. The satellite ring is composed of a circular ring. The surface of the circular ring is provided with electromagnetic connection separation and recovery interfaces. The micro-nano satellite connection and recovery docking are realized by the butt joint of the micro-nano satellite curved surface permanent magnet interface and the curved surface electromagnetic interface. The locking of the connection interface is realized by adopting a bag belt fixing mode during the execution of a launch task.

The invention discloses a full-life-cycle traceability supervision method and system for products in an MES system, relates to the technical field of product traceability, and solves the problem that product traceability fails after an existing batch management server is attacked. The method comprises the following steps: constructing a block chain for product full-life-cycle tracing supervision, and adding an MES server, a DNC server, a numerical control machine tool and a quality inspection server into the block chain; an accounting node in the block chain interacts with an MES server, a DNC server, a numerical control machine tool and a quality inspection server, supervises the production process of products, and records the production batch number, the product number, the production program version number, the numerical control machine tool number and quality inspection data of each product; and when the customer needs to perform product traceability, a product traceability client is accessed to the block chain, and the product traceability client obtains the record corresponding to the product number of the to-be-traced product from the block chain and compares the obtained record with the information of the to-be-traced product to obtain a traceability result.

The invention relates to the technical field of air conditioners, in particular to a control method of an air conditioner and the air conditioner, and solves the potential safety problem of an ozone device of the air conditioner in the peculiar smell removal process. The air conditioner comprises an ozone generator, and the control method comprises the steps that under the conditions that the ozone generator is in an on state and a user is in a home leaving state, the first real-time home leaving distance of the user is obtained; comparing the first real-time home leaving distance with a first preset distance threshold value; according to a comparison result of the first real-time home leaving distance and a first preset distance threshold value, determining whether to continuously detect and record a plurality of subsequent distances at a set frequency; predicting a motion trend of the user based on the plurality of subsequent distances; and determining whether the air conditioner exits the ozone deodorization mode or not at least according to the movement trend. Before the user goes home, the air conditioner can be controlled to exit the ozone deodorization mode, the user is prevented from making contact with high-concentration ozone possibly generated in the ozone deodorization process, and the health and safety of the user can be guaranteed.

The present invention belongs to the field of communication information processing technology, and discloses a method, device and application for optimizing communication between the HART protocol and the host computer software. The method comprises: inputting the network parameters of the HART protocol to ModbusTCP protocol gateway, changing the address of the HART protocol to ModbusTCP protocol gateway to the network segment where the terminal device is located, and at the same time defaulting the service port used by the ModbusTCP protocol to a digital identifier that can identify the signal transmission of the field device; inputting the set Modbus parameters, determining the high and low bytes of the data type in the Modbus communication format; the terminal device reads the data detected by the field device in real time, and displays it on the screen. The host computer end of the present invention only needs to add a gateway for converting the HART protocol to the ModbusTCP protocol, so that the problem of the communication protocol hardware is solved.

The invention belongs to the field of computer vision technology, and discloses a gaze tracking error or parameter calibration compensation method, system, device and medium based on gaze trajectory, which are used for gaze landing point error compensation or mapping model parameter calibration of a gaze tracking system. By tracking a moving point of a given trajectory, human eye images of different time series are selected to build a mapping model, and the shape information of the gaze trajectory and the least square method are used to solve the compensation table coefficients or calibrate the model parameters. The invention can be applied to various gaze estimation models including the cross-ratio method; a corresponding gaze estimation model is established according to the corresponding gaze estimation method, and parameter compensation is performed by a gaze tracking parameter compensation method based on the gaze trajectory after gazing at a given trajectory; while reducing the difficulty and workload of the error compensation or parameter calibration operation process, the calculation accuracy of the gaze mapping model is guaranteed, and the invention is applicable to various gaze tracking algorithms including the cross-ratio method, the corneal reflection method and the like.

This invention belongs to the field of artificial intelligence algorithm technology and discloses an intelligent transfer adversarial method and system for electromagnetic signal recognition under incomplete information. First, multiple models of alternative target networks with incomplete information are constructed in parallel, and these alternative models are trained using an evolutionary strategy based on a prior knowledge matrix. Then, an ensemble network model is generated based on the trained alternative models, and a fully connected layer and a layer with feature-level weighted fusion are designed. Finally, an optimized adversarial method for electromagnetic spatial signal recognition tasks is designed, generating adversarial samples under the ensemble model, and transferring these adversarial samples to the target network to achieve adversarial capabilities against the target network. This invention can effectively achieve adversarial capabilities against the target network when the target network information is unknown, and it still exhibits good transfer adversarial performance under the same signal recognition task and different unknown target network conditions.

The utility model relates to the technical field of clothes processing equipment, and aims to solve the problem of poor filtering performance of the existing draining pump filter. The utility model provides a filter for a draining pump, the filter can be accommodated in a pump shell of the draining pump to form a filter cavity, the filter comprises two end parts and a side support connected with the two end parts, and the filter also comprises a plurality of spoilers connected to the side support, and the plurality of spoilers are arranged in a staggered manner along the axis direction of the filter, so that a flow channel which extends in a snake shape along the axis direction is constructed in the filter cavity. The filter provided by the utility model not only can successfully intercept hard foreign matters and avoid damage to an impeller, but also can smoothly discharge line scraps and other foreign matters without causing blockage, thereby ensuring that the performance curve of the drainage pump does not deviate, reducing the failure rate of the drainage pump, avoiding the trouble of frequent manual cleaning by a user, and improving the working efficiency of the drainage pump. And the user experience is improved.

The invention belongs to but not limited to the technical field of genetic engineering, and discloses an Anguilla japonica Activin A recombinant protein, and an expression method and application thereof. The anguilla japonica Activin A recombinant protein comprises an anguilla japonica Activin A mature peptide amino acid sequence, a 6 * histidine tag at the N end and SUMO dissolution promoting polypeptide; the amino acid sequence of the anguilla japonica Activin A recombinant protein is SEQ ID NO: 1, and the nucleotide sequence of the coding gene of the anguilla japonica Activin A recombinant protein is SEQ ID NO: 3. The prokaryotic expression vector pET-His-SUMO-Activin A of the Japanese eel Activin A is constructed for the first time, the Activin A recombinant protein of which the amino acid sequence is consistent with the mature peptide of the Japanese eel Activin A can be obtained, and the Activin A recombinant protein can be applied to ovarian development regulation and artificial propagation research of the Japanese eel.

The application belongs to the technical field of transformers, and discloses a linear phase-shifting transformer core loss calculation method, system, device and terminal, which is based on a classical trinomial loss separation model, three loss coefficients are calculated by using a least square method; the influence of local hysteresis loop, magnetic field non-sine, tooth slot effect and skin effect on the loss model and the loss coefficient is analyzed, the static magnetic density characteristics of the linear phase-shifting transformer are obtained based on finite element simulation calculation; the tangential magnetic density and the radial magnetic density of each characteristic point are separated, and Fourier analysis is carried out, the fundamental wave magnetic density and each harmonic magnetic density are substituted into the improved loss separation model. The core loss of the linear phase-shifting transformer in the stable operation state can be accurately calculated, the calculation precision is greatly improved, which can provide a reference for the efficient operation of the transformer, and has important significance for the optimization design of the linear phase-shifting transformer body and the realization of the minimum loss control of the multiple superposition inverter system of the linear phase-shifting transformer.

The present invention belongs to the technical field of active vibration reduction equipment for aerial remote sensing, and discloses an adaptive active vibration reduction system, method and application of an aerial remote sensing system. The system comprises: a base is fixedly connected to a load through an upper plane, and a lower plane is fixedly connected to a vibration source, and the vibration frequency of the vibration source to the load is reduced through relative micro-displacement of the upper plane and the lower plane; a micro-displacement detection system is installed on the base, and is used to detect the displacement states of the upper plane and the lower plane in real time respectively; a controller is used to receive the detection signal of the micro-displacement detection system, and send a control instruction to the power component after analysis and processing; the power component is used to output a waveform with the same frequency and opposite acceleration direction as the vibration source according to the control instruction of the controller, and perform relative movement of the upper plane and the lower plane of the base 1 to reduce the vibration frequency of the vibration source to the load. The purpose of the present invention is to reduce the influence of micro-vibration on photoelectric instruments, accurately suppress micro-vibration, and improve system accuracy.

The invention belongs to the technical field of Internet, and discloses a data competition automatic evaluation method and system, and the method comprises the steps: receiving an evaluation task, carrying out the editing and storage of evaluation configuration according to the requirements of a competition question, and starting an evaluation environment through a scheduling program; queue monitoring is automatically established, and corresponding files are downloaded; and performing evaluation processing by using the scheduling mirror image and the execution mirror image of the evaluation container to obtain an evaluation score. According to the method, distributed deployment is adopted, different game question evaluation environments are isolated, and evaluation environment pollution is avoided; according to the method, automatic capacity expansion and recovery can be realized, so that the disaster recovery capability of the evaluation program is guaranteed; according to the invention, the queue mechanism ensures the evaluation robustness, and high-concurrency tasks can be processed easily; the container is automatically destroyed after expiration, so that server resources are saved; the dynamic matching of the evaluation script and the result set submits the task, and the game question maintenance cost is reduced.

This utility model provides a side roof panel mounting structure integrating lighting and LCD, and a rail transit vehicle. The side roof panel mounting structure includes a split side roof panel body, which includes a first side roof panel, a second side roof panel, and a hinge. The first side roof panel is used to connect with the interior frame. The first side roof panel is provided with a drawer-type profile body. The front of the drawer-type profile body is provided with a first continuous guide rail and a second continuous guide rail. The lighting device and the LCD screen are respectively installed between the first continuous guide rail and the second continuous guide rail according to a preset arrangement along the length of the vehicle body. One side of the second side roof panel is connected to the side wall of the vehicle body, and the other side is hinged to the first side roof panel. One end of the hinge is connected to the first side roof panel, and the other end is connected to the second side roof panel.

The application belongs to the field of computer vision, and discloses a weakly supervised semantic segmentation method, system, device and medium based on random combination, which comprises the following steps: training classification networks N1, N2 and N3 respectively by using a training data set, a slice training data set and a slice training data set randomly combined, so that each network can extract different active regions in the picture, and the learning results of the other two networks are learned by using the mutual supervision training mode; finally, the prediction results of the three networks are combined to obtain the final semantic segmentation result, which is used as a semantic segmentation training data set to train a semantic segmentation model to predict the final semantic segmentation result. The application effectively utilizes the different perception areas of the network for the randomly combined slice pictures, and utilizes the different classification networks to perceive the categories of the same picture, thereby improving the semantic segmentation ability and prediction accuracy of the semantic segmentation model through the semantic segmentation data set obtained by combining the results of the three classification networks.

The application belongs to the technical field of natural language processing, and discloses a federated learning optimization method and system for entity extraction, a device and a terminal. In the shared data meta information transmission stage, the server sends a shared data request to each selected client participating in federated learning, each client calculates shared data set meta information, and uploads the meta information to the server. In the approximate IID entity annotation data construction stage, the server constructs an approximate IID entity annotation data index set according to the meta information uploaded by the client, and requests the corresponding client for data corresponding to the index set. In the model training stage, the server is regarded as a client participating in federated learning training, and the approximate IID entity annotation data set is used for model training to obtain an approximate centralized model W IID The application reduces the difference between the model parameter spaces of the clients, improves the accuracy and convergence speed of the global model, and reduces the training communication cost.