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830results about How to "Reduce storage pressure" patented technology

Vehicle driving safety monitoring method, device and system

The invention discloses a vehicle driving safety monitoring method, a vehicle driving safety monitoring device and a vehicle driving safety monitoring system. The vehicle driving safety monitoring method comprises the steps of: determining a driving route range between a starting address and a destination address as well as a reasonable time range of arriving at the destination address by a taxi taking server according to the starting address and the destination address contained in a taxi booking request; sending an in-vehicle image acquisition command to vehicle-mounted intelligent equipment if the taxi taking server determines that vehicle position exceeds the driving route range or the vehicle driving time exceeds the reasonable time range according to driving data of a vehicle transmitted by the vehicle-mounted intelligent equipment, so that the vehicle-mounted intelligent equipment acquires in-vehicle image information and transmits the in-vehicle image information to the taxi taking server; comparing the in-vehicle image information acquired in the former period and the later period on the basis of the in-vehicle image information acquired after the vehicle-mounted intelligent equipment responds to the taxi booking request and a passenger gets on the vehicle; and sending alarm information to a safety monitoring server when determining that an unsafe index reaches a preset alarm threshold value, and notifying traffic police near the vehicle to vehicle to check or monitor the vehicle to ensure driving safety.
Owner:BEIJING QIHOO TECH CO LTD

Hybrid storage system and method for mass intelligent power utilization data

The invention discloses a hybrid storage system and method for mass intelligent power utilization data. The hybrid storage system comprises a front communication server cluster, wherein the front communication server cluster receives an original data frame uploaded by a terminal and stores an original data film obtained after data analysis is carried out into a local disk; the front communication server cluster unloads the original data frame and the original data file to a MongoDB private cloud storage platform; a collection data unloading calculation platform reads the data of the MongoDB private cloud storage platform to process the data, and then the processed data is stored in a production library and an analysis library of the collection data unloading calculation platform; the production library stores service data, and the analysis library analyzes and processes the service data of the production library; and an analysis result is written back to the production library for query. The invention can cope with challenges brought for the storage capability of a front master station for collecting mass data, the collected data is stored in a local cache, the requirements of quick storage and uniform management of the mass data are met, and the storage pressure of a production database is lowered.
Owner:SHANDONG UNIV +2

Method, equipment and system for multimedia content distribution

The embodiment of the invention provides a method, equipment and a system for multimedia content distribution. The method includes allowing service nodes to receive a request sent by a terminal and acquire a visit requirement of a first media content; allowing the service nodes to identify the type of the terminal, match a second media content matching with the terminal in types and return to the terminal from each media content stored locally according to the identified type. Each media content stored locally by the service nodes is information, configured by the service nodes according to media content and acquired through multi-format conversion of each original content sent by a CDN content center or acquired from the service nodes transmitted by the CDN content center after multi-format conversion of each original content is performed by the CDN content center according to the media content configured information. By the aid of the method, the equipment and the system, the problems that the existing service is high in computing pressure and storing pressure and low in operating efficiency are solved, and the problems that the media content sent by the service nodes cannot be played and watched normally since the media content cannot match with the terminal in types are avoided.
Owner:CHINA MOBILE COMM GRP CO LTD

Communication device and synchronization method and communication system of wearable device paired with communication device

The invention provides a communication device and a synchronization method and a communication system of a wearable device paired with the communication device. The synchronization method includes the following steps that firstly, a synchronization strategy is set, and the synchronization strategy is the relation of the synchronization method corresponding to the type of content information; secondly, after the main communication device receives the content information, the type of the content information is determined; thirdly, the content information is sent to the wearable device according to the determined type and the synchronization strategy. According to the communication device and the synchronization method and the communication system of the wearable device paired with the communication device, data synchronization between the main communication device and the wearable device can be achieved, in addition, a filtering mechanism is set for synchronization transmission of data, and the data with different content and types can be transmitted according to the manner set by a user, and the manner can be a real-time transmission manner or a time-delay transmission manner. Thus, data receiving and storing pressure of the wearable device is relieved, the standby time of the wearable device is prolonged, and more miniaturized design of the wearable device is promoted.
Owner:HUAQIN TECH CO LTD

Device for preparing, storing and feeding vehicle-mounted hydrogen/oxygen and control method thereof

The invention discloses a device for preparing, storing and feeding vehicle-mounted hydrogen / oxygen and a control method thereof, particularly relating to prepare, store and feed the hydrogen and the oxygen on a vehicle. In the system, based on reserving an engine storage battery, a vehicle-mounted hydrogen and oxygen preparing device, a hydrogen and oxygen storing device, a hydrogen and oxygen preparing, storing and electronicaly control unit are increased, wherein, according to an accumulator voltage signal, and a hydrogen and oxygen storage tank pressure signal, the electronicaly control unit controls opening and closing of a hydrogen and oxygen preparing machine switch relay, an oxygen tank unidirectional gas discharging valve, an oxygen supply linear solenoid valve and a hydrogen supply pipeline solenoid valve, thus realizing the preparation, storing, feeding, and controlling of the hydrogen and the oxygen on the vehicle. The system has the advantages of realizing the preparation and storing of the hydrogen and the oxygen on the vehicle, ensuring that the vehicle can utilize the hydrogen and the oxygen prepared by the system in the last-time operation when in cold starting, so as to realize the starting of pure hydrogen or pure hydrogen-oxygen gas mixture for the increasing of the hydrogen and oxygen storing device, thereby greatly reducing HC and CO emission when a gasoline engine is started.
Owner:BEIJING UNIV OF TECH

Block chain data sharing method and device

The invention relates to the field of financial technology. The invention further discloses a block chain data sharing method and device. The method comprises the steps that a sharing mechanism obtains a first file, determines a hash value of the first file, determines an exchange public key corresponding to the first file, and the exchange public keys of the plurality of first sharing mechanismsare obtained, an encryption key is determined according to the exchange public key corresponding to the first file and the exchange public keys of the plurality of first sharing mechanisms, the firstfile is encrypted by using the encryption key to obtain an encrypted ciphertext of the first file, and the encrypted ciphertext is sent to the data sharing smart contract of the block chain. Due to the fact that the exchange public key corresponding to the first file is obtained through the private key and the index number of the sharing mechanism, different exchange keys can be generated for different files under the condition that the private key of the sharing mechanism is not changed, and user privacy can be protected flexibly, conveniently, safely and effectively. And the encrypted file is sent to the block chain, so that real chaining of the encrypted file is realized, and real data sharing is realized.
Owner:WEBANK (CHINA)

Expressway vehicle detection and multi-attribute feature extraction method based on local image

The invention provides an expressway vehicle detection and multi-attribute feature extraction method based on a local image, and relates to the technical field of intelligent transportation. A video acquisition terminal reads expressway monitoring video in real time and transmits the expressway monitoring video to an edge end, and the edge end analyzes the real-time video data by adopting a background difference method to select a key frame; a cloud end uses a VOC2007 data set and vehicle pictures collected by an expressway to train a YOLO-v3-tiny detection model, the edge end loads the trained YOLO-v3-tiny detection model to predict the position of a vehicle bounding box in the selected key frame, and then a local image of a vehicle is obtained and transmitted to the cloud end; a ResNet-50 residual neural network model is trained by the cloud end by utilizing the training set data with the multi-label type, the edge end loads the trained ResNet-50 residual neural network model, and the acquired local image of the vehicle is input into the neural network model to realize the extraction of multi-attribute features of the vehicle; and the extracted multi-attribute features of the vehicle are made into a label, and the label is uploaded to the cloud end.
Owner:沈阳帝信人工智能产业研究院有限公司

An area-fixed edge computing system and a method for heterogeneous city internet of things

The invention relates to an area-fixed edge computing system and a method for heterogeneous city internet of things, belonging to the technical field of the internet of things. The method comprises the following steps: S1, dividing the area into a plurality of virtual internet of things small grids according to the distribution density and position of GIS information and sensors in a specific areaof the city; S2, set at least one calculation point in each small mesh to be edge calculated, capture various sensor data in that small mesh, decoding the sensor data, calculating and screening out effective information, store, encrypting and uploading the information to a computing station; S3, combine a plurality of small grids into an enlarged grid, and arrange a computing station with multiple information sending and receiving and high computational power, picking up that uploading information of the computing points under the jurisdiction, classifying, analyzing and calculating, and deeply fusing heterogeneous information to generate imperceptible new information; S4: Upload the new information to the background server and download it to the application side. The invention converts the calculation of the edge into the calculation of the stationary type of the regional center, and improves the practicability and efficiency of the calculation of the edge of the urban internet of things.
Owner:重庆光电信息研究院有限公司

Dry separation method of manganese carbonate ore

ActiveCN103639027AHigh recovery rateIdeal beneficiation technical indicatorsSievingScreeningBrickEconomic benefits
The invention discloses a dry separation method of manganese carbonate ore. The dry separation method comprises the following steps: feeding raw manganese carbonate ore into a crushing system for crushing; screening the crushed ore through a double-layer dry-type screening system; according to the screen hole size of the screening system, performing coarse-fraction magnetic separation on the screened ore through a coarse-fraction dry-type magnetic separation system to obtain coarse-fraction concentrate and middling, and performing fine-fraction magnetic separation on the screened ore through a fine-fraction dry-type magnetic separation system to obtain fine-fraction concentrate and tailings, wherein the obtained middling is returned to the crushing system. The dry separation method has the beneficial effects that (1) the process flow is simplified, the ore separation efficiency is improved, and the recovery rate of manganese ore is improved; (2) on the basis of cost reduction, the grading index of concentrate grade is not reduced; (3) energy is saved, consumption is reduced, clean production is realized, and economic benefits are improved; (4) overflowing is avoided, the storage capacity pressure of a tailings pond can be released fundamentally, and meanwhile, final manganese carbonate tailings (waste sands) can be applied to paving or brick-making after being treated.
Owner:DAXIN MANGANESE MINE BRANCH OF CITIC DAMENG MINING IND

Urban heterogeneous Internet-of-things edge computing system and method set according to management categories

The invention relates to an urban heterogeneous Internet-of-things edge computing system and method set according to management department categories, and belongs to the technical field of Internets of things. The method comprises: A1, according to the management department categories of public and private sectors and distribution and trends of managed facilities or soil and water and environments, setting computing points along a line at positions at an interval of distance d, and setting computing stations at an interval of distance 5d-10d; A2, aggregating sensor data, which are required forcomputing point attachment computing, by the computing points, carrying out decoding computing thereon, screening out valid information, storing the same, encrypting the same, and uploading the sameto a computing station; A3, aggregating information of all the computing points in a jurisdiction by the computing station, classifying the same, and carrying out heterogeneous information fusion; andA4, encrypting the fused information, uploading the same to a background server, and issuing a driving command to an actuator corresponding to a relevant calculation point, or directly sending the same to an application terminal. According to the method, edge computing is conversed into central point station computing set according to the management categories, and edge computing in an urban Internet of things is more clearly and efficiently carried out.
Owner:重庆光电信息研究院有限公司

Maneuvering target radial acceleration and speed estimation method based on orthogonal match pursuit

The invention discloses a maneuvering target radial acceleration and speed estimation method based on an orthogonal match pursuit, belonging to the field of radar signal processing. According to the maneuvering target radial acceleration and speed estimation method, a radial acceleration and a radial speed of a high-speed and large-maneuvering target can be rapidly accurately determined, the tracking performance and the recognition capability of a radar to the high-speed and large-maneuvering target are effectively improved, the response time of a weapon system is increased, and the attacking capacity to the target is enhanced. The maneuvering target radial acceleration and speed estimation method provided by the invention comprises the following steps of: 1, sampling a signal received by a radar, establishing a complete atom library; 2, carrying out orthogonal match pursuit decomposition on the signal; and 3, searching a sparse solution energy diagram peak value, determining a radial acceleration and a radial speed of the signal according to peak value coordinates. The maneuvering target radial acceleration and speed estimation method has the advantages of high instantaneity, accuracy in radial acceleration and speed estimation, easy realization of engineering, stronger engineering application value and popularization prospect, and can be used in the fields of improving high-maneuvering target real-time accurate pursuit and radar target type recognition, and the like.
Owner:NAVAL AERONAUTICAL & ASTRONAUTICAL UNIV PLA

Hybrid digital eye ground image recording and sharing system based on blockchain

InactiveCN108806779AFacilitate Image RetrievalConfirm authenticityMedical imagesSpecial data processing applicationsImaging dataMedical treatment
The invention discloses a hybrid digital eye ground image recording and sharing system based on a blockchain. Through a blockchain technology, eye ground images are stored and shared in a distributedmode. For a current state that chronic disease patients in a current community and a remote area can not receive regular eye ground examination, a portable digital eye ground lens is used to achieve patient eye ground image acquisition, complete eye ground standardization image format conversion work, and store in an eye ground mage transmission and storage system. And then, image fingerprint characteristic extraction is performed and an image address is encrypted to the blockchain for recording. And through applying an intelligent contract, an eye ground image can be shared after the authorization of each patient. Through applying the blockchain technology, the patient has the initiative of sharing the eye ground image data of the patient himself or herself, and a workflow that the eye ground image is stored in a dispersive system and is difficult to share is improved. Through data encryption and an eye ground image recording block, safety and a data anti-tampering characteristic in amedical data sharing process can be effectively increased, and the eye ground image is safely recorded and is effectively used.
Owner:NANTONG UNIVERSITY
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