52results about How to "Guarantee perception" patented technology

The invention provides a remote sensing image change detection method and system based on a U-net improved algorithm, and the method comprises: carrying out the preprocessing of a remote sensing image, and then integrating the preprocessed remote sensing images of different time phases to obtain an input image; performing down-sampling encoding and up-sampling decoding on the input image based onan improved U-net network; and finally, outputting a binary image whether the image is changed or not according to an analysis result. According to the invention, a network structure in a semantic segmentation direction is applied to the field of change detection, and a residual learning mechanism is introduced, so that the encoder can quickly converge and deepen the number of network layers; andmeanwhile, ASPP is used for enhancing the perception capability of the network to image features, so that the algorithm can be kept at a relatively high level in precision and efficiency, and has relatively high robustness. The method and the system are suitable for the field of change detection of remote sensing images, can be popularized to other fields, and have important significance.

The invention belongs to the aircraft avionics system technology and relates to a health monitoring system of avionic electronic equipment based on an ARINC653 standard. The health monitoring system adopts a mode of input step by step, diagnostic decision and stage treatment to process anomalous events, performs comprehensive diagnosis from a software task stage to an operation system and from an avionic electronic equipment layer to a full-aircraft system, and adopts a classification layered mode to assign fault events to processing steps of different stages according to a health monitoring stage, and processing permissions are enlarged step by step according to the health monitoring stage. By means of the mode of the stage treatment and report stage by stage, airborne health management of an aircraft is effectively achieved. Safety of fault processing is ensured through the processing permissions of different stages, and processing efficiency on the system fault events and sensing of the aircraft on the health states are improved by reporting the events stage by stage. Therefore, fault diagnosis recovery capability of the aircraft is effectively improved, and testability and safety of the aircraft are strengthened.

The invention provides a networking identifier display method and a networking identifier display device, belongs to the technical field of communication, and can at least partially solve the problemof frequent switching of network connection identifiers of a terminal due to reasons such as switching of a network area or weak network coverage of the existing terminal. The networking identifier display method provided by the invention comprises the following steps: judging whether a wireless resource reconfiguration message is received within a first preset time or not; if the wireless resource reconfiguration message is received within the first preset time, displaying a first identifier of a first network; testing a first network radio access network cell corresponding to the first network frequency point information to obtain a test result; judging whether the test result meets a preset requirement or not, and judging whether the test time exceeds second preset time or not; if the test result meets the preset requirement and the test time does not exceed the second preset time, adding a first network radio access network cell; and if the first network radio access network cell is successfully added, displaying the first network second identifier.

The invention discloses a panoramic wave recording method and platform system capable of supporting the fault diagnosis and analysis of a power grid and belongs to the power system and automation field. The platform system of the invention comprises a three-layer structure which comprises an acquisition area, a regional station area and a master station area. According to the panoramic wave recording method, after a fault occurs on the power grid, fault acquisition terminals can be started through a plurality of means to perform multi-data type fault recording; the fault acquisition terminals indirectly upload fault information to a panoramic wave recording platform regional master station; the panoramic wave recording platform regional master station performs full-grid wave recording cooperative control; and after completing data recording, the fault acquisition terminals transmit fault wave recording files to the panoramic wave recording platform regional master station through a data transmission network; and the panoramic wave recording platform regional master station receives the fault wave recording files of all the fault acquisition terminals and then performs synchronization processing on fault data according to high-precision time scales. With the panoramic wave recording method and platform system capable of supporting the fault diagnosis and analysis of the power grid of the invention adopted, powerful data support can be provided for the automatic control of the power grid.

The invention relates to the field of automatic driving sensors, in particular to a calibration method and arrangement structure of an automatic driving environment perception sensor and a vehicle. According to the calibration method, different calibration methods are adopted for different sensors, based on utilization and processing of data such as laser point clouds, pose transformation of coordinate systems of different sensors relative to a vehicle coordinate system is carried out through different methods, the automation degree of automatic driving environment perception sensor calibration is improved, the accuracy is high, the requirement of multi-sensor fusion is met; 360-degree uniform coverage of a vehicle body is met, meanwhile, sensor redundancy of a certain degree is achieved,under the condition that an individual sensor breaks down, the surrounding environment can be normally monitored, the automatic driving safety is improved, and through the arrangement method of the embodiment, on the premise that the perception performance is guaranteed, mutual cooperation is achieved to the maximum extent, the using number of sensors is reduced as much as possible, and cost is effectively reduced.

A device and method for configuring a hearing aid for a patient has an audiometer that generates test tones and at least one open loudspeaker, brought close to at least one ear of the patient, connected to the audiometer, for transmitting short-pulse test tones generated in the audiometer. Fixed signal intensities, different from one another, are set at the audiometer, and a configuration of the hearing aid is carried out as a function of the patient's individual hearing capacity.

The invention discloses a method and system for transmitting services between an RRU and BBUs, and the BBUs, and relates to the technical field of communication. The technical problem that in the prior art, protection is lacking in service transmission between the RRU and the BBUs is solved. The method includes the steps that firstly, the RRU has access to the BBU 1 and the BBU 2; secondly, the BBU 1 detects whether faults happen to a light path 1 between the BBU 1 and the RRU or not in real time, and the BBU 2 detects whether faults happen to a light path 2 between the BBU 2 and the RRU or not in real time, wherein service data are transmitted through the light path 1 between the BBU 1 and the RRU; thirdly, when the BBU 1 detects that faults happen to the light path 1 for transmitting the service data between the BBU 1 and the RRU, the BBU 2 is informed to take over all the service data; fourthly, the BBU 2 starts to use the light path 2 between the BBU 2 and the RRU to transmit the service data to the RRU.

The invention relates to a method for detecting the shielding state of a vehicle-mounted millimeter wave radar based on target recognition. The method is characterized by, based on vehicle speed information of a vehicle, by utilizing ground reflection and the detectable distance of the millimeter-wave radar to an absolute static reflector in the environment, respectively analyzing a foreign mattershielding condition and a non-foreign matter shielding condition of a bumper right ahead the millimeter-wave radar; making statistics of CFAR detection point number which is larger than the detectable distance and smaller than the maximum value of the detectable distance of the radar system under such two situations in terms of velocity corresponding to the absolutely static object in the environment; setting a detection threshold value according to the CFAR detection point number, and the determining the result on the basis of the comparison result of the threshold value and the actual CFARdetection target point number in the real-time shielding detection process. According to the method, shielding detection of the vehicle in the static state and the moving state is considered, and shielding condition detection of the vehicle-mounted millimeter-wave radar is effectively achieved; and meanwhile, the method is low in calculation force requirement, the sensing capacity of the vehicle-mounted millimeter-wave radar system to the environment is guaranteed, and the real-time performance of vehicle-mounted millimeter-wave radar application is met.

The application discloses a terminal UE access control method. After determining the terminal protocol version of terminal UE according to an access request sent by the terminal UE, an RNC (Radio Network Controller) judges whether the terminal protocol version is higher than the highest protocol version supported. If the terminal protocol version is higher than the highest protocol version supported, the UE is redirected under instruction according to the LTE capacity of the UE, the reason why the access request is triggered, a blind redirection switch and the neighborhood of a cell which the UE requests to access, or the access request is processed in accordance with the highest protocol version. The success rate of RRC access and the success rate of relocation are improved, user perception is ensured, and the investment of operators is protected.

The present invention proposes a reliable evaluation criterion-based robust cooperative spectrum sensing method. According to the method, channel access feedback and full-time slot sensing are introduced to establish a reliable evaluation standard; based on the evaluation standard, the idle probability and occupation probability of an authorized channel and the detection probability and false alarm probability of a sensing node are calculated according to data in first N time slots; and local judgment results reported by the sensing node at the current time slot are fused according to the above calculation results, so that global judgment is performed. The method of the invention has high robustness and can maintain good performance under a large number of malicious users.

The invention relates to an incremental cooperative sensing method on the basis of an n-out-of-K fusion rule. The method includes dividing K relays of a cooperative sensing system into N front relays and K-N rear relays, detecting x relays with available master users of N front time slots, adopting an incremental cooperative sensing mode if m<L> is smaller than x and the x is smaller than m<H>, and adopting a non-incremental cooperative sensing mode if the m<L> is not smaller than the x and the x is not smaller than the m<H>; determining that the master users are unavailable if the x is smaller than or equal to the m<L> when the non-incremental cooperative sensing mode is adopted, and determining that the master users are available if the x is larger than or equal to the m<H>; and detecting y relays with available master users of K-N rear time slots when the incremental cooperative sensing mode is adopted, determining that the master users are available if x+y is larger than or equal to n, and determining that the master users are unavailable if the x+y is smaller than the n. The incremental cooperative sensing method has the advantages that the non-incremental cooperative sensing mode is adopted during cooperative sensing to reduce the average expenditure on the time slots, and the sensory ability equivalent to the sensory ability of the traditional algorithm is guaranteed by optimization constraint conditions.

The invention provides a cell mobile network control method and device, equipment and a storage medium, and the method comprises the steps: determining the 4G / 5G network use condition of a target cell, judging whether the target cell is a light-load cell or not, and if the target cell is the light-load cell, determining the network coverage condition of the target cell by the neighbor cell and thenetwork load condition of the target cell or the neighbor cell in each preset time period, and determining whether the target cell shuts down the 4G / 5G network in each preset time period according tothe network coverage condition and the network load condition. The technical problems that in the prior art, a method for shutting down a cell network is too simple, adverse effects can be generatedon perception of users of an existing network, the number of cells meeting conditions is small, and therefore other cells needing to shut down a mobile communication network in real conditions cannotbe shut down are effectively solved. Furthermore, by adopting the cell mobile network control method, the operation cost of the mobile communication network is reduced, and the energy waste is avoided.

The invention discloses a laser projector space speckle contrast ratio measuring method and device. The device comprises a laser projector, a screen, a diaphragm, an optical lens, a photoelectric sensor, a base body and a mobile station. The laser projector is used for projecting laser onto a screen; the screen is used for changing a laser light path; the diaphragm is used for adjusting the size of light; the optical lens is used for focusing the light on the photoelectric sensor, so that the light forms a speckle image on the surface of the photoelectric sensor; the photoelectric sensor is used for receiving light, converting a formed speckle image into an electric signal with corresponding image data, and calculating the contrast RS of the speckle image; and the mobile station is used for driving the photoelectric sensor to move along the optical axis direction so as to adjust the distance between the photoelectric sensor and the optical lens, so that virtual image light on a plane with a certain distance S in front of and behind the screen is focused on a light detection surface of the photoelectric sensor through the optical lens, and an object-image conjugate relationship is formed between the photoelectric sensor and a virtual image.

The invention relates to a robot which comprises a trunk structure, a controller, a charging structure, a driving assembly and a walking structure, and the trunk structure is provided with a mounting cavity; the controller is mounted in the mounting cavity; the charging structure is connected with the trunk structure, is electrically connected with the controller and is used for supplying power to the controller; the robot comprises a trunk structure, a controller, a driving assembly and a walking structure, the driving assembly is electrically connected with the controller, the driving assembly is installed on the trunk structure, the walking structure is connected with the output end of the driving assembly, and the driving assembly is controlled by the controller to drive the walking structure to move. The robot can walk, retreat, roll and lie down, so that the robot can be applied to various fields of families, industry, rescue, detection and the like, and the application universality of the robot is achieved.

The invention discloses a putlog-hole-free construction method for a building masonry wall. The method comprises the following steps of construction of a masonry body, construction of a ring-beam rigid frame formwork and putlog-hole-free construction of an external wall. According to the method, the putlog-hole-free construction of the wall is adopted, since the masonry body is built at a time, the phenomenon that masonry body mortar at putlog holes is not full is reduced, and the building quality and appearance of the masonry body are both guaranteed; through the putlog-hole-free constructionof the masonry body, the phenomenon is avoided that reserved putlog holes are not tightly filled, so that hollowing of a plastered wall surface and the leakage of an external wall are caused; throughthe putlog-hole-free construction of the masonry body, the engineering cost can be reduced, and the labor input is reduced.

The invention discloses a terminal direct connection resource allocation method based on resource increment evaluation, and solves the problems of congestion of D2D user pairs and shortage of spectrum resources in existing communication. The method comprises the following steps: acquiring the number of resource blocks needing to be allocated by each D2D user at the current moment, and calculating the resource increment of each D2D user relative to the previous moment; selecting an operable user pair from the D2D user pairs according to a resource allocation condition; screening out effective users of each operable user pair according to the distance between the operable user pair and the cellular user; and obtaining the total interference between each D2D user pair, and selecting a cellular user of which the resource block margin meets the resource increment requirement and the interference requirement after multiplexing from the effective users as a target channel multiplexing object. According to the method, the perception of the cellular user and the D2D user pair can be optimally ensured while the interference is weakened, so that the spectrum resource utilization rate and the system performance of the 5G system are improved to the maximum extent.

The invention discloses an urban multi-unmanned aerial vehicle cooperative route planning method based on deep reinforcement learning, and the method comprises the steps: building a flight environment model based on urban three-dimensional point cloud data, and achieving the efficient obstacle query through an R-Tree index; for multiple unmanned aerial vehicles, acquiring distance information of surrounding obstacles by adopting a ray-based environment sensing mode, and constructing a state space containing a current unmanned aerial vehicle state, a target relative position, relative positions of other unmanned aerial vehicles and the distance information of the surrounding obstacles; outputting continuous flight control actions through a deep reinforcement learning strategy of parameter sharing; a multi-target reward function is designed, and the multiple unmanned aerial vehicles are guided to achieve safe and efficient collaborative route planning; in the execution stage, each unmanned aerial vehicle makes an independent decision only by depending on the shared strategy network and local observation information of the unmanned aerial vehicle, and distributed cooperative flight is realized. According to the method, the complexity of a traditional method for environment perception and decision calculation is effectively reduced, and the method is suitable for a multi-unmanned aerial vehicle planning task in a complex urban airspace.

The application provides a kind of intelligent metasurface assisted near-field time division integrated sensing method and system, it is related to wireless communication field.The application designs integrated sensing system by introducing RIS and single antenna receiver, avoids complex full-duplex base station and multi-antenna receiver, significantly reduces hardware complexity and implementation cost under the premise of ensuring high-quality communication and sensing performance;The adjustable frame structure designed separates the communication subframe and the sensing subframe completely, decouples the communication beam optimization and the sensing signal design, respectively realizes the communication and sensing functions in a purer signal environment;In the communication subframe, the communication and rate maximization are realized, and in the sensing subframe, the sensing capability is enhanced through the transmission beam pattern matching, which significantly improves the overall communication rate and sensing accuracy of the system;Finally, a virtual multi-dimensional receiving signal of multiple passive targets in the near field of RIS is constructed through repetition coding design, and then the 2D-MUSIC algorithm is used to estimate the target angle and distance parameters.

The invention provides a bandwidth allocation device and method. The bandwidth allocation device is used for service communication between UE and a network and comprises a wireless internet access module, a wireless communication module, a service recognition module, a bandwidth allocation module, a safe module and a data route module. By the adoption of the modules, the bandwidth allocation device can recognize service types corresponding to service data flow, allocates corresponding transmission bandwidth for the service data flow according to the service types, realizes automatic adjustments of the transmission bandwidth according to the service types, enables the transmission bandwidth to meet the requirements of current interacting services, and ensures user perception. At bandwidth allocation time, the service recognition module and the bandwidth allocation module are used for deciding, so that coupling between logic modules is reduced, and the flexibility of deployment is improved. Meanwhile, at bandwidth allocation time, different strategies can be adopted for the service recognition module, the bandwidth allocation module and the safety module according to different service types, so that adaptability and flexibility are improved, and service QoS is improved.

The invention provides a circuit switched fallback (CSFB) method, a base station and a terminal. A delay decision timer is added on a base station side, and the base station starts the delay decisiontimer when a first measurement report is received and acquires an inter-system frequency point with the highest signal strength and transmits the inter-system frequency point with the highest signal strength to the terminal after timing of the delay decision timer arrives at preset time, so that the terminal falls back to the inter-system frequency point with the highest signal strength to initiate a voice service request; the success rate of CSFB is increased; a fallback instruction is transmitted to the terminal not only according to the first measurement report; the randomness in selectinga first inter-system frequency point when the terminal measures the signal strength is avoided; fallback failure of the terminal caused by fallback through an inter-system frequency point with a relatively weak signal is avoided; CSFB call delay is not increased excessively; and user perception is ensured.

The present invention provides a radar performance monitoring method, device and storage medium, wherein the method includes: determining the measured distance value and signal-to-noise ratio corresponding to each target point according to the echo signal of the current frame, and based on all the measured distances value and signal-to-noise ratio to estimate the fusion inferred distance corresponding to the current frame, wherein the fusion inferred distance indicates the estimated maximum detection distance of the radar; filter the fusion inferred distance corresponding to the current frame to obtain the current frame Corresponding decision decision value; comparing the decision decision value corresponding to the current frame with at least one preset threshold to determine the current working state of the radar. The technical solution provided by the embodiment of the present invention can realize real-time self-detection of radar occlusion performance and determine the current working state of the radar, and the method has strong robustness and can respond to the degradation of radar performance caused by bad weather or environmental factors , which effectively ensures the perception ability of the vehicle radar to the environment.

The invention provides a signaling access method and system. The method comprises: obtaining a configured PS service resource distribution type of a current cell; and if the configured PS service resource distribution type of the current cell is dynamic frame division, carrying out signaling access to an H-carrier according to the load condition of the H-carrier. According to the signaling access method, during signaling access to the H-carrier, the configured PS service resource distribution type of the current cell is obtained and resource distribution depends on the PS service resource distribution type of a current cell; if the configured PS service resource distribution type of the current cell is the dynamic frame division, signaling access to the H-carrier is realized according to the load condition of the H-carrier. The signaling connection speed when the H-carrier of the cell does not overload can be guaranteed, and the congestion condition of the H-carrier is relieved and the perception of a user is ensured.

The invention discloses a page information providing method and device, computer equipment and a readable storage medium, and relates to the technical field of the Internet. The method comprises the steps: displaying a to-be-displayed page indicated by a page information providing request, and broadcasting a page guide language used for describing page functions of the to-be-displayed page; obtaining the element layout copywriting used for describing the position relation of the page elements in the to-be-displayed page, and broadcasting the element layout copywriting, so a user can know the detailed layout of the page and determine which page elements are included in the page and the position of each page element in the page while roughly knowing the page, the limitation that the visually impaired person knows the page is eliminated, and it is guaranteed that the visually impaired person really perceives the complete page. The method comprises the following steps: in response to a page information providing request, displaying a to-be-displayed page indicated by the page information providing request; broadcasting the page function copywriting of the to-be-displayed page; and obtaining an element layout copywriting of the page to be displayed, and broadcasting the element layout copywriting.

The embodiment of the invention relates to a texture generation method of a three-dimensional model and a generation method and device of the three-dimensional model. The texture generation method of the three-dimensional model comprises the steps of obtaining three-dimensional model representation data of a texture to be generated; generating a plurality of surface local maps of the target three-dimensional model based on the three-dimensional model representation data; obtaining features corresponding to the surface local graph, and generating a texture graph corresponding to the surface local graph based on the features; and obtaining the surface texture of the three-dimensional model based on the texture maps corresponding to the plurality of surface local maps. According to the embodiment of the invention, the local continuity of the surface texture of the three-dimensional model can be well guaranteed, the texture generation effect of the three-dimensional model is effectively guaranteed, the presentation effect of the finally obtained target three-dimensional model is further guaranteed, and the user impression can be well guaranteed.

The invention relates to a method for detecting terrain by using a blind guide stick based on active visual guidance, and belongs to the technical fields of active guidance and deep learning. In the field of service equipment for disabled people, the method provided by the invention utilizes an existing generative adversarial network (GAN) to generate tactile signals, the tactile signals are usedin blind people assisting equipment, that is, the blind guide stick, and the active visual guidance is introduced, so that blind people can be helped to better perceive ground information through vibrotactile sense; in the case of ensuring that the blind people perceive the ground information, the blind guide stick provided by the invention avoids aimless detection of the ground, but detects the ground based on the active visual guidance, so that travel of the visually impaired people is facilitated; and compared with traditional blind guide equipment, the blind guide stick provided by the invention does not need aimless detection by a blind guide stick, but firstly performs ground anomaly detection to detect a ground area in a targeted manner, and is more conducive to the safe reliable and convenient travel of the visually impaired people.

The invention relates to the technical field of hearing aids. The invention particularly relates to a frequency shift real-time loudness compensation method based on an equal loudness curve. The method comprises the following steps: outputting N frequency bands of an input signal through a WOLA analysis window, calculating frequency shift parameter inflection point frequency and cut-off frequency,acquiring frequency shift step length according to the selected inflection point frequency and cut-off frequency, acquiring a non-frequency shift signal and a frequency shift signal according to theinflection point frequency, namely the compression ratio, calculating the sound pressure level of each frequency band of the frequency shift signal and the channel index of the original signal frequency in real time through a sound pressure level detection device, making the frequency shift signal pass through a frequency shift device to obtain a frequency-shifted signal and a target channel indexthereof, searching an equal loudness curve array to obtain a signal sound pressure level index so that a compensated frequency shift signal is formed, and synthesizing the compensated frequency shiftsignal and the non-frequency shift signal to form a hearing aid output signal. According to the invention, the frequency shift hearing aid can simply and effectively ensure that a wearer has the perception ability before and after signal frequency shift in any environment.

The invention discloses a panoramic wave recording method and platform system capable of supporting the fault diagnosis and analysis of a power grid and belongs to the power system and automation field. The platform system of the invention comprises a three-layer structure which comprises an acquisition area, a regional station area and a master station area. According to the panoramic wave recording method, after a fault occurs on the power grid, fault acquisition terminals can be started through a plurality of means to perform multi-data type fault recording; the fault acquisition terminals indirectly upload fault information to a panoramic wave recording platform regional master station; the panoramic wave recording platform regional master station performs full-grid wave recording cooperative control; and after completing data recording, the fault acquisition terminals transmit fault wave recording files to the panoramic wave recording platform regional master station through a data transmission network; and the panoramic wave recording platform regional master station receives the fault wave recording files of all the fault acquisition terminals and then performs synchronization processing on fault data according to high-precision time scales. With the panoramic wave recording method and platform system capable of supporting the fault diagnosis and analysis of the power grid of the invention adopted, powerful data support can be provided for the automatic control of the power grid.

The invention belongs to the aircraft avionics system technology and relates to a health monitoring system of avionic electronic equipment based on an ARINC653 standard. The health monitoring system adopts a mode of input step by step, diagnostic decision and stage treatment to process anomalous events, performs comprehensive diagnosis from a software task stage to an operation system and from an avionic electronic equipment layer to a full-aircraft system, and adopts a classification layered mode to assign fault events to processing steps of different stages according to a health monitoring stage, and processing permissions are enlarged step by step according to the health monitoring stage. By means of the mode of the stage treatment and report stage by stage, airborne health management of an aircraft is effectively achieved. Safety of fault processing is ensured through the processing permissions of different stages, and processing efficiency on the system fault events and sensing of the aircraft on the health states are improved by reporting the events stage by stage. Therefore, fault diagnosis recovery capability of the aircraft is effectively improved, and testability and safety of the aircraft are strengthened.

The application discloses a terminal UE access control method. After determining the terminal protocol version of terminal UE according to an access request sent by the terminal UE, an RNC (Radio Network Controller) judges whether the terminal protocol version is higher than the highest protocol version supported. If the terminal protocol version is higher than the highest protocol version supported, the UE is redirected under instruction according to the LTE capacity of the UE, the reason why the access request is triggered, a blind redirection switch and the neighborhood of a cell which the UE requests to access, or the access request is processed in accordance with the highest protocol version. The success rate of RRC access and the success rate of relocation are improved, user perception is ensured, and the investment of operators is protected.

The invention discloses a traffic artery coverage optimum glancing angle obtaining method based on power lobe rotation. The method comprises the following steps of measuring the vertical distance l<v> between an antenna and a traffic artery and measuring an included angle theta<1> of the traffic artery and a longitude; calculating vertical distance space propagation loss and vehicle body penetration loss; calculating a vertical distance coverage main lobe power angle theta<max>, a power lobe offset function f(theta+deltatheta) and a critical glancing angle theta<GA>; and calculating a main lobe satisfaction coverage index minimum power angle theta<min> and an optimum glancing angle theta<GA _OPT>. The method is characterized by that the customer satisfaction degree is improved and the return on investment is improved.