649 results about "Safety index" patented technology

The invention discloses an unmanned vehicle dynamic path programming method based on environment uncertainty, comprising steps of establishing a vehicle kinetics model, establishing a dynamic environment model and necessary conditions for anew programming a path, obtaining a motion state original value of the unmanned vehicle, a vehicle motion state original target value and a vehicle motion state candidate target value, generating a candidate path, obtaining an optimal path through selection based on a safety index and a rapidity index, and reprogramming the optimal path of the unmanned vehicle when the unmanned vehicle motion environment satisfies the condition where the new path can be programmed. Compared with the prior art, the invention can not only satisfy the safety requirement for safety driving, but guarantees the driving efficiency under the constraint of the vehicle model. The invention realizes the coordination optimization of the performance index through distribution of various weights, realizes the real-time planning under the condition where a plurality of dynamic obstacles exist, and effectively improves the safety of the unmanned vehicle driving.

A joint search method for UAV multiobjective path planning in an urban low altitude environment first constructs a static safety index map based on static known obstacles. Meanwhile, based on proactively detected obstacles that are not marked on a geographic map by a UAV, the method constructs online a dynamic safety index map. Second, a multiobjective path planning problem is solved using a joint offline and online search method. Moreover, this method first plans offline the least cost path from a starting point to an end point and then invokes the online search scheme to replan online a changed path when the UAV detects unknown obstacles. Thus, the UAV can avoid dynamic obstacles effectively. The online search scheme has a small search space and can quickly replan a safe path for the UAV, thus satisfying the requirement of UAV on the real-time path planning.

The invention relates to an assessment method of efficient operation of an intelligent power distribution network. The assessment method comprises the steps of: (1) determining boundary conditions; (2) determining service objects; (3) building an assessment index system which includes a power distribution network safety index, a power distribution network reliability index, a power distribution network economical efficiency index, a power distribution network high operation quality index and a power distribution network intelligence index; (4) determining assessment index numerical values of single items; (5) scoring for single items of assessment indexes; (6) performing comprehensive scoring of the assessment index system; and (7) judging whether efficient operation of the power distribution network is achieved according to a comprehensive score of the assessment index system in Step (6). The assessment method for efficient operation of the intelligent power distribution network in the invention has a relatively wide range of application, can comprehensively assess the operating state of the intelligent power distribution network, and an assessment result provides an importance basis for decision-making work of power grid dispatching, planning and operation management personnel.

This invention relates to one safety index engine system based on visit control, which comprises database servo, single load module, user information description module, scramble device module, inquire index module and index database, wherein, the system can describe user information according to materials degree; the scramble device gets the materials right and collects the safety control materials content; feeding back safety degree with visit material list according to user inquire key word; due to different rights on different websites, index engine gets user identity information according to the information without load operation in visiting materials.

External beam radiotherapy treatment workflow scheduling and optimization. The system and method provides for determining a workflow metamodel, receiving a treatment plan, determining a treatment schedule corresponding to the workflow metamodel and treatment plan, taking into account saftety by determining alternative treatment schedules, computing a safety index, and selecting one alternative treatment schedule that satisfies a safety threshold and that provides an optimal schedule.

A system for managing security index scores is provided. A security index that rates the security level of a portion of code is associated with the code. Development tools, such as packaging utilities, compilers, integrated development environments, and the like, may warn the user if the security level of the portion of the code is low. Source code repository tools, such as concurrent versioning systems, may deny submitted source code if the security index is below a threshold or below a previous version. Installation tools may warn a user or refuse to install a software package if an associated security index is low. Security index scores may be maintained and digitally signed by a trusted third party.

A short-term planned route from a start position that is a ship position at a first time up to an end position that is the ship position at a second time is designed based on a planned route, an estimated encounter marine phenomenon information, operation performance information measured on a ship, and a hull motion model of the ship, the estimated encounter marine phenomenon information being measured on the ship based on actually encountered marine phenomenon information. The short-term planned route makes a first evaluation function optimal, the first evaluation function containing: an index indicating an influence of a fluctuation portion between a planned position that is a ship position planned at the second time on the planned route and the end position; a fuel consumption index when the ship sails along the short-term planned route; and a safety index when the ship sails along the short-term planned route.

The invention relates to a method for improving the result safety of search engine, comprising that first processing basic safety evaluation on the webpage collected by a search engine, according to two kinds of list information as pre-collected safe website and malice website, processing an integral safety evaluation on the search result, leading a safety index into the result display, and processing different treatments on different result items according to the levels of the safety index, to make user differ the risk degrees of different results. The method can improve the safety of search engine in complex internet condition, to avoid user to enter into malice website effectively and avoid benefit loss.

The invention relates to a portable outdoor old people nursing instrument based on an integral safe index. The portable outdoor old people nursing instrument comprises a central processing unit, a sensing assembly, a warning assembly, a communication unit, a global positioning system (GPS) positioning unit and an evidence taking assembly, wherein the GPS positioning unit sends the user position information, the peripheral environment information collected by the sensing assembly, the moving state information of users and the information about whether the users fall or not to the central processing unit to be processed, a central processor uses an internal set safety index as the threshold value, the warning assembly is triggered, in addition, the evidence taking assembly is activated to record the video and the sound in sites, and the remote warning is also realized through the communication unit. The portable outdoor old people nursing instrument has the advantages that the size is small, the functions of falling monitoring, positioning, warning and the like are also realized, and in addition, the main functions of environment information collection, environment and moving monitoring, confirmation on various unexpected events, old people sleeping state wakening, local and remote warning, environment and old people moving information uploading, event site automatic evidence taking and the like are also realized.

The invention discloses a nonlinear fuzzy detection method for operating safety of a power cable tunnel. The method comprises the following steps of: determining a project layer, a subproject layer and an index layer in a model, detecting the index layer and acquiring data; establishing a comment set; establishing a deterioration grade of each evaluation index and a membership function matrix of a corresponding comment set; determining weight of each level of evaluation indexes; sequentially calculating fuzzy evaluation matrixes of the index layer and the subproject layer by using an analytic hierarchy method until a final fuzzy evaluation result vector is obtained; and determining an evaluation result of an operating safety state of the power cable tunnel by using a maximum membership degree method. Single parameter early warning of the operating state of the cable tunnels and cables is realized, comprehensive on-line safety index evaluation and early warning are realized, technical support is provided for timely and effectively processing operating hidden dangers and failures of the cables, and after the project is finished, abnormal power failure can be reduced, and major disasters can be warned in advance; and an inspection workload of a worker is reduced. After the project is finished, the method can be popularized nationwide and has high economic and social benefits.

The invention discloses a coastal zone ecological security evaluation method, comprising the following steps: 1. Screening coastal zone ecological security evaluation indicators based on marine health index and urban ecological security; 2. Constructing a coastal zone ecological security evaluation index system based on a PSR model; 3. Index data collection and dimensionless; 4. Analytic hierarchy process to determine the subjective weight of the evaluation index; 5. Entropy value method to determine the objective weight of the evaluation index; 6. Determine the comprehensive weight of each index; 7. Coastal ecological security index calculation and evaluation. The evaluation method of the present invention can well reflect under the background of rapid urbanization and industrialization and large-scale human development activities, the safety status of the ecological environment in the coastal zone and the main pressure factors it bears, and can provide a basis for the protection of the ecological environment in the coastal zone area in the future. and management provide a certain theoretical basis.

The invention discloses a safety assessment system for a river water environment of a plain river network, and belongs to the field of water environment safety assessment. By taking a DPSIR model as a theoretical basis, water environment safety assessment indexes are divided into five aspects of social and economic driving force, a pollution source and water resource development pressure, a water environment health present condition, a river service function and an environment supervision capability, and twenty assessment indexes including permanent population density, GDP per capita, a building land use proportion and the like are established. The water environment safety assessment process comprises the specific steps of obtaining a survey value for assessing an index of each layer of a river; determining an assessment standard value of the index; performing standardization processing of the survey value of the index; calculating an index score of a river water environment safety assessment index layer; calculating an index score of a river water environment safety assessment criterion layer; and calculating and assessing a river water environment safety index. According to the system, a scientific assessment method is established for the plain river network, and the water environment safety condition and problem of the plain river network can be quickly and effectively identified.

The invention relates to a method and a system for designing a searchable encrypted cloud disc with fuzzy semantics. The method comprises the following steps: firstly, inputting a key pair to encrypt a file which is needed to be uploaded by a user through a client side; extracting keywords of the encrypted file, and carrying out semantic extension to build a synonym set; secondly, building a safety index to the built synonym set by a bloom filter, and uploading the safety index to a cloud storage server side; generating a keywords trap door according to the key input by the user by the client side, and submitting the trap door to the cloud storage server side; finally, searching for a corresponding file by the safety index according to the keywords trap door submitted by the user by the cloud storage server side, and returning the file back to the client side; decrypting the file returned by the cloud storage server side through the key pair by the client side. The method and the system are mainly used for providing the synonyms semantic fuzziness search function for the information search of the cipher text file, and supporting the search of many keywords, so that the file can be updated with higher efficiency.

The invention relates to an intelligent monitoring system of a user transformer substation. The system comprises monitoring equipment and an electric energy supervision terminal central data processor which are communicated mutually through a network, wherein the monitoring equipment is used for collecting electric energy index parameter data of a transformer substation and transmitting the electric energy index parameter data to the electric energy supervision terminal central data processor; and the electric energy index parameter data received by the electric energy supervision terminal central data processor is compared with a safety index, the electric energy index parameter data which does not conform to the safety index is intelligently identified by calling an expert database, andwhether an alarm module is started and alarm information is sent is determined by the expert database. The intelligent monitoring system of the user transformer substation in the invention can accurately provide the alarm information through the intelligent identification of the expert database, thus reducing the false alarm probability and improving the management efficiency of the transformer substation.

The present disclosure is directed to methods and apparatus for controlling a vehicle based on motion or kinematic data received by a computer when the behavior of a driver is being monitored. Such methods and apparatus may generate one or more safety indices that may include a driver score, a vehicle safety score, and/or an environment safety score. These safety indices may optionally be weighted and combined into an overall safety score, grade, or index. The safety scores or indices may be used to generate a personalized speed threshold or acceleration threshold for a vehicle and/or a driver of the vehicle. Methods and apparatus consistent with the present disclosure may result in the speed of a vehicle being reduced, an increase in vehicle location accuracy, or functions such as headlights or windshield wipers or automated driving assistance being turned on to increase safety.

The invention belonging to the technical field of medical data processing discloses an intelligent-algorithm-based drug safety confidence index system and a construction method. The construction method comprises: research data are collected; the research data are analyzed and a comprehensive evaluation index is obtained by a corresponding delphi method; and a drug safety evaluation index system is constructed and a PSO-BP-neural-network drug safety evaluation model is improved. The system is composed of a target layer, a project layer, a factor layer, and an index layer. According to the invention, a corresponding evaluation mode needs to be constructed in a future drug safety index analysis and the algorithm, data, and various factor weight ratios of drug safety evaluation index are analyzed in the evaluation result, so that the selected data source becomes accurate, the used algorithm meets the practical situation, and the constructed drug safety evaluation index is based on scientific, people-oriented, truth-seeking, rigorous, innovative principles.

The invention provides a comprehensive evaluation index system of a ship routing scheme and a combined evaluation method thereof. The comprehensive evaluation index system comprises a quantitative index and a qualitative index, wherein, the quantitative index comprises an efficiency index and the qualitative index comprises a safety index and a performance index. The combined evaluation method comprises the following steps: determining a qualitative evaluation index value by a group decision making method; determining a quantitative index value of the scheme by an entropy method and a fuzzy analytic hierarchy process (FAHP); and realizing ordering and optimization of the scheme based on a technique for order preference by similarity to ideal solution (TOPSIS). Compared with the traditional comprehensive evaluation index system of the ship routing scheme and the evaluation method thereof, the comprehensive evaluation index system and the evaluation method thereof of the invention increase analysis evaluation of the quantitative index, thus the index system is more complete; and by combination of quantitative evaluation and qualitative evaluation, expert knowledge is integrated into the decision-making process preferably, thus being more practical and more flexible.

The invention provides a method for evaluating operational safety of an interconnected power grid. The method includes computing various indexes of the power grid and a new project in each power grid sub-area to be used as original sample data, and constructing a sampling space; adopting the proportion of load of each power grid sub-area to total load of the power grid as an expert weight, obtaining a composite value of each single index by means of weighted computation and using the composite values as sample data; computing the correlation degrees of the various indexes, and obtaining objective weight of the various indexes by means of normalization computing; carrying out normalization based on the objective weights of the various indexes after composite values of the single indexes are computed, and computing correlation coefficients; carrying out weighted computation for the objective weights of the single indexes and the obtained correlation coefficients and obtaining the quality sequence of the power grid and the new project; and obtaining an overall safety index of each power grid sub-area by means of weighted computation according to the objective weights of the indexes, using the overall safety indexes as sample data, computing correlation degrees of each power grid sub-area by the aid of grey correlation analysis, and obtaining the quality sequence of safety of the various power grid sub-areas.

The invention provides an evaluation method for the operating characteristics of a power distribution network after the grid connection of distributed power supplies. The evaluation method includes the following steps of: determining evaluation indexes of the operating characteristics of the power distribution network, wherein evaluation indexes of the operating characteristics of the power distribution network includes a first-layer index, a second-layer index and a third-layer index; determining evaluation weight of the operating characteristics of the power distribution network; establishing an evaluation matrix of the third-layer index with respect to the first-layer index; calculating the evaluation vector and evaluation value of the first-layer index. According to the evaluation method for the operating characteristics of the power distribution network after the grid connection of the distributed power supplies, the operating characteristics of the power distribution network connected with the distributed power supplied are evaluated from three aspects, respectively being a safety index, an electric energy quality index and an economical efficiency index, based on the generation and operation characteristics of the distributed power supplies; the quantitative evaluation of the operating characteristics of the power distribution network after the grid connection of the distributed power supplies is achieved by using a fuzzy comprehensive evaluation method combined with a layer analytic method.

The invention provides an optimization method of the operation of a power station boiler. The optimization method comprises the following steps: obtaining optimal operating condition data; obtaining current operating condition data of a thermal power generating unit; when safety index parameters, stability index parameters and environment-friendly index parameters all meet pre-set conditions, obtaining a power generation cost of a current operating condition; if finding an operating condition which is the same as the current operating condition from the optimal operating condition data, obtaining an optimal operating condition power generation cost of the current operating condition; if not finding, adding current operating condition parameters into historical operating condition data; if the power generation cost of the current operating condition is less than or equal to the optimal operating condition power generation cost, sending out a first alarming prompt; otherwise, obtaining an adjusting value and obtaining a cost loss; sending out a second alarming prompt and outputting the adjusting value; continuously adjusting an oxygen amount and an air feeding amount according to the adjusting value; and when meeting a pre-set condition, stopping adjusting. The invention further provides an optimization device of the operation of the power station boiler and the stability of optimizing the power station boiler is improved.

An evaluation method for evaluating safety of a battery having an electrode group including a positive electrode plate, a negative electrode plate and a separator inserted between said electrode plates. The method includes the steps of charging the battery to a predetermined voltage; incorporating conductive foreign matter into the charged battery such that the conductive foreign matter is in contact with the positive electrode plate, and not in contact with the negative electrode plate; immersing said battery into which the conductive foreign matter has been incorporated in an electrolyte to dissolve and deposit the conductive foreign matter, thereby causing an internal short circuit to occur in the battery; and evaluating a thermal behavior of the battery in which the internal short circuit has occurred, and outputting results of the evaluation as safety indices.

The invention, which belongs to the technical field of unmanned driving, relates to a lane keeping ability detection system and method for unmanned driving. The system comprises an identity identification module, a forward-facing camera, a vehicle information acquisition module, an image processing module, a storage module, a transmission module, a connection circuit, and a cloud database. According to the method cooperating with the system, the ID, GPS coordinate, speed, and state of the turning light of the vehicle are obtained; the camera shoots a scene image of a road in front of the vehicle and a lane line is identified; and a lane departure distance and a departure angle of the vehicle are identified. After data collection is carried out on an unmanned driving vehicle under the certain mileage, the lane keeping ability test is performed; whether the vehicle changes the lanes is distinguished based on the turn light state; and lane keeping comfort and safety index values are calculated according to the lane departure distance and departure angle. According to the invention, the data collection and communication functions as well as the lane keeping ability detection function are realized; and the system and method have the great guidance significance in testing the unmanned driving vehicle.

The invention relates to a method for predicting an electric vehicle battery RUL (Remote Uplink) based on big data machine learning. The method is composed of a corresponding application architecture,a corresponding flow and a corresponding calculation model. The method comprises the following steps: firstly, acquiring battery real-time data in the operation process of an electric vehicle battery; and other operation data of the electric vehicle; performing data consolidation and cleaning, characteristic processing on the data; a model and a training verification algorithm are established through big data machine learning; wherein the modeling mainly uses a nonlinear hybrid algorithm model and a survival model, and the result is evaluated and optimized at different angles, so that a modelfor predicting the RUL of the electric vehicle battery is established, the maintenance and replacement of the battery are optimized, the safety index of a vehicle owner is improved, and the balance of system performance and economic benefits is achieved.

The invention belongs to the technical field of cloud computation, and particularly relates to a cloud computation-based internet education platform resource library image retrieval method. The method comprises the following steps of: data pre-processing: extracting image features by an image owner by using an image feature extraction algorithm, constructing a safety index by using the image features, encrypting images in an image library, and finally sending the safety index and the encrypted image library to a cloud server provider; retrieval: authorizing a user to construct a search trap door and submitting the search trap door to the cloud service provider; and searching an index file by the service provider according to a retrieval request so as to obtain image identifiers matched with the retrieval request, and sorting the sorting results according to relevancy. According to the method, a global image feature-based encrypted image retrieval method is used for realizing the efficient and convenient using of image data under cloud computing environment.

The invention discloses a static risk assessment method for a power grid in severe weather. The probability of failures of the power grid and static safety risks caused by the failures in the severe weather can be analyzed, and support is provided for the discovery of potential risks of the power grid in the severe weather and the advanced reduction of operation risks and failure loss of the power grid. According to the method, the probability and the seriousness of the failures caused by the severe weather are taken into comprehensive account, a disclosed static safety index can be used for the static safety risk assessment of the power grid in the severe weather in different regions, an effective analysis tool for finding weak links of the power grid in static safety in the severe weather, and favorable support for the early-warning of the failures in the severe weather can be provided, and the failure loss, caused by the severe weather, of the power grid can be reduced.

The invention discloses an anti-theft lock integrating the functions of asynchronous interlocking, electromechanical interlocking, warning and invisibility. An asynchronous lock spring is arranged in an asynchronous bearing hole and abuts against an asynchronous lock head in an asynchronous lock hole, and a push rod is arranged behind the asynchronous lock head; an invisible key or an invisible connection is hidden in an invisible hole, a fixed contact is arranged on a lock body, a rotating contact is arranged on a rotary surface of a rear lock cylinder or arranged behind the rear lock cylinder, a main contact is arranged at the front end of the rear lock cylinder, and an auxiliary contact is arranged at the rear end of a front lock cylinder; the front lock cylinder is completely disconnected from the rear lock cylinder, the rear lock cylinder is locked through the asynchronous lock head, a power supply contact and the rotating contact are connected into a power supply circuit of an electromagnet, an electronic remote control device interrupts the power supply circuit of the electromagnet, and the main contact and the auxiliary contact are connected into a power supply circuit of an asynchronous warning system. The rear lock cylinder and a connection tongue cannot be rotated if a specifically-matched key is not used for unlocking. The anti-theft lock integrates the functions of asynchronous interlocking, electromechanical interlocking, invisibility, self locking and asynchronous warning and is high in safety index.