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40 results about "Current time" patented technology

Taxi passenger-searching path recommendation method based on information entropy

The invention discloses a taxi passenger-searching path recommendation method based on information entropy. The steps include: mining a taxi track, and extracting passenger carrying point data therefrom; mining and extracting passenger-searching points representing passenger gathering places from the passenger carrying points obtained by extraction; measuring attribute values of factors according to which a taxi selects a passenger searching position in a passenger searching process; according to the current position and current time of the taxi, obtaining passenger searching points in a designated range, and building a passenger searching point selection model which includes a set of passenger searching points where the taxi can arrive departing from the current position at the current time and a decision matrix; solving the passenger searching point selection model based on information entropy, and obtaining a designated number of passenger searching points with optimal synthesized attributes; and using the passenger searching point obtained at the previous time as a reference point, repeatedly building and solving the models for a designated number of times, and generating a passenger searching path according to an obtaining level of optimal passenger searching points and recommending the path. The taxi passenger-searching path recommendation method based on information entropy has the advantages of being capable of bring good benefits to a taxi driver and being high in recommendation accuracy.
Owner:HUNAN UNIV OF SCI & TECH

IOV (Internet of Vehicles) communication protocol design method

ActiveCN104954374AEasy to develop simultaneouslyAvoid lossTransmissionProtocol designStructure of Management Information
The invention discloses an IOV (Internet of Vehicles) communication protocol design method. An information communication protocol between a vehicle terminal and a cloud terminal comprises data length, vehicle-mounted product ID, data and CRC (Cyclic Redundancy Check), wherein the data is classified into six types; a vehicle information cycle packet, a diagnosis event packet and a buffer retention packet belong to a transmission type; a vehicle information cycle acknowledgement packet, a diagnosis event request packet and a buffer retention acknowledgement packet belong to a receiving type; a data frame structure consists of solid data and dynamic data; the solid data comprises ID definitions of the six types of functional packets, time, vehicle sleep states, delayed information states, delayed meters and vehicle information update mark bits; packets which are not transmitted successfully serve as buffer detention packets. The vehicle information update mark bits are used for determining whether comparison data of the current time and previous time in vehicle information is updated or not and marking the updated data; dynamic data is vehicle information with update changes. By virtue of adopting a method of designing a solid data format and a dynamic data format and setting data mark bits, complete data can be obtained with minimal data expenses, and the IOV data transmission cost is greatly lowered.
Owner:魔视智能科技(上海)有限公司

Interference blocking scheme switching method for millimeter wave cellular network uplink secure transmission

ActiveCN110381503AIncrease freedomGuaranteed transmission reliabilityCommunication jammingLocation information based serviceTelecommunications linkSecure transmission
The invention provides an interference blocking scheme switching method for millimeter wave cellular network uplink secure transmission. The interference blocking scheme switching method specificallycomprises the following steps: the step 1, taking an optimal cooperative user in K-1 cooperative users to carry out interference blocking and taking full duplex interference blocking of a base stationas an interference blocking scheme respectively; the step 2, calculating the safety throughput of a communication link when the K-1 cooperative users in the step 1 interfere, and taking the cooperative user corresponding to the maximum safety throughput as an interference node of an interference blocking scheme, meanwhile, calculating the safety throughput during full duplex interference of the base station in the step 1; and the step 3, comparing the communication link security throughput obtained in the step 2 with the communication link throughput when the base station interferes, and taking the interference blocking scheme corresponding to the maximum security throughput as the interference blocking scheme of the current time slot; According to the invention, the safety throughput istaken as an evaluation index, and the user position information is utilized to efficiently and flexibly switch between the two interference blocking schemes, so that the system always works in an environment with the optimal safety throughput.
Owner:XI AN JIAOTONG UNIV

Indoor equipment positioning system and method

ActiveCN110381457ATimely processingHigh positioning accuracySynchronisation arrangementParticular environment based servicesCurrent timeEngineering
The invention provides an indoor device positioning system and method. The system comprises at least two indoor devices and at least four base stations, wherein clock synchronization is kept among thebase stations; wherein the setting positions of the base stations meet the condition that any four base stations are not located on the same plane, and the indoor device can receive signals transmitted by at least three base stations at any position; wherein the number of the base stations is the minimum number meeting the condition; when the indoor device can receive the signals of the three base stations at present, the current three-dimensional positioning position is determined according to the TOF, and when the indoor device can receive the signals of the at least four base stations at present, the current three-dimensional positioning position is determined according to the TDOA; and the base station sequentially arranges the received signals, the first signal is not marked and is not at the tail position, when the time for processing the homologous signals last time and the current time are within a certain duration, the first signal is moved to the tail position and marked, and otherwise, the first signal is processed. According to the scheme, the signal of each indoor device can be processed in time, so that the positioning accuracy is improved.
Owner:上海知白智能科技有限公司

Cloud storage data grading method based on user behaviors

InactiveCN109918448AEfficiency is not affectedReduce investmentDatabase updatingInput/output to record carriersData fileOperational behavior
The invention belongs to the technical field of cloud storage, and particularly relates to a cloud storage data grading method based on user behaviors. The method provided by the invention mainly comprises the following steps of: the cloud platform counts the operation behaviors of the user on the data, wherein the operation behaviors at least comprise uploading, downloading, transferring, collecting and deleting, the statistics at least comprises statistics of the occurrence time and frequency of the operation behaviors, the value of a data file at a certain moment is calculated according tothe statistical data, and in a target time period, the data value is given according to the operation frequency; the current time value of the data is estimated of estimating by adopting an evaluationmethod according to the values of the data on different sequences within a period of time, sequencing the values of all the stored data according to the current time value of the data, and defining the first 10% of the sequencing set as hot data and the first 20%-20% of the sequencing set as hot data; Wherein 10% is defined as general data, the rest is defined as cold data, and the data is movedto a corresponding storage position according to the definition of the data.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA +1

Cascade hydropower station optimal scheduling system and method and safety power grid system

ActiveCN110912200AReasonable abandonment of waterWater abandonment risk balanceSingle network parallel feeding arrangementsSystems intergating technologiesPower stationOptimal scheduling
The invention discloses a cascade hydropower station optimal scheduling system and method, and a safety power grid system, and the method comprises the steps: carrying out the preliminary calculationof each power station of a cascade power station group through the predicted storage flow condition and planned output of each power station of the cascade power station group, and obtaining the stateof the cascade power station group; traversing the state sequence of each power station of the cascade power station group according to the time sequence, if the state of the current time period of the cascade power station group meets the set requirement, completing the calculation of the scheduling time period, and if not, performing water abandoning risk assessment according to the length of the pre-abandoning time, and performing output adjustment on the current time period. Through the scheme provided by the invention, each cascade power station is balanced in water abandoning risk underthe condition of meeting cascade overall operation optimization in the whole dispatching process, water abandoning is relatively reasonable, cascade water and electricity operation is optimized, andcascade water energy resources are fully utilized.
Owner:GUIZHOU POWER GRID CO LTD

Commodity promotion method and system

The invention is applicable to the technical field of shopping rebate, and provides a commodity promotion method and device. The method comprises the steps of receiving product information of a presetnumber and a preset specification submitted by an enterprise; displaying the product information to a user through a client; receiving the shopping money paid by the user when purchasing the product,generating order information, and synchronously sending the order information to the enterprise terminal to enable the enterprise to deliver the order information to the user; after the user receivesthe goods and confirms to receive the goods, the shopping money is issued to the enterprise; receiving a sharing result of the purchased product use experience process on a preset sharing date withinthe promotion period of the user, auditing the content of the sharing result, and sending the sharing result to the enterprise after the auditing is passed, so that the enterprise pays correspondingpromotion commission; and after the enterprise pays the promotion commission of the current time, the return money corresponding to the current time is issued to the user who completes the promotion task. According to the invention, the sharing content of the product is periodically published within the promotion period, so that the promotion effect can be periodically and continuously achieved.
Owner:许圆圆

Battery temperature difference self-adaption threshold value determination method and system

ActiveCN113540589AImprove driving safetySecondary cells servicing/maintenanceInformation technology support systemPower batteryElectrical battery
The invention discloses a battery temperature difference self-adaption threshold value determining method and system. The method comprises the steps of dividing a vehicle state into a charging state, an operation state and a standing state according to the data uploaded by an electric vehicle, calculating the time interval between the first data uploading time of the vehicle and the current time, and if the time interval is less than or equal to three months, determining that the temperature difference threshold value is a threshold value specified by an enterprise when the vehicle leaves a factory, if the time interval is longer than three months, extracting the temperature of the power battery according to different vehicle states, and constructing a power battery temperature database in charging, operation and standing states, extracting temperature difference values to construct a power battery temperature difference database, and determining the window length of the sliding window based on temperature difference threshold stability, and determining temperature difference threshold values in different states according to the window length of the sliding window based on the Pauta criterion. The invention also provides a battery temperature difference self-adaption threshold value determining system. The threshold value is determined for the power battery temperature difference based on different states of the vehicle, and the driving safety is improved.
Owner:CHANGAN UNIV

Method and system for controlling molten iron transportation

ActiveCN113084148AAchieve unique identificationAccurately identify job performanceMelt-holding vesselsCasting safety devicesProcess engineeringIndustrial engineering
The invention discloses a method and a system for controlling molten iron transportation, which are applied to the field of smelting. The method comprises the following steps that a tank matching plan of the current time of molten iron transportation is acquired, a molten iron tank car is selected according to the tank matching plan, and unique identification information of the molten iron tank car in the current operation period is generated; when the molten iron tank car runs to a first blast furnace and is empty during normal running, the molten iron tank car is confirmed according to the unique identification information, and iron is received from the first blast furnace to the molten iron tank car; iron number information of iron received by the molten iron tank car at the current time is generated, and distribution information of the molten iron tank car is generated according to the iron number information and the unique identification information; and when the molten iron tank car runs to a target tank transfer station and runs normally, the molten iron tank car is checked by using the distribution information. The method and system solve the technical problem that management and control over existing molten iron transportation are not facilitated.
Owner:武汉钢铁有限公司
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