96 results about "Hazard analysis" patented technology

The present invention relates to methods for detecting and concentrating minute amounts of biohazard analytes, including but not limited to bacteria, protozoa, viral pathogens, and toxins, in environmental and other samples. These analytes can be substantially enriched by the methods of the invention, and further, a second analyte can be removed from the sample.

The invention discloses an intelligent vehicle lane changing control method based on hazard analysis. A sensing unit is used for sensing the driving environment and operation state information, and a decision-making unit judges whether a vehicle needs to change lanes or not according to the collected information; when the current road condition meets the lane changing requirement, the decision-making unit plans a driving path, the planed path is subjected to hazard analysis through simulating calculation, the driving path is adjusted and modified according to hazard analysis results, and the lane changing action can be given up when hazards are too large; after the driving path is determined, a control unit controls the vehicle to achieve the lane changing action; when the current road condition does not meet the lane changing requirement, due to emergency conditions of roads ahead, the vehicle needs to change the lanes emergently; and hazard analysis still needs to be conducted when the vehicle changes the lanes emergently, and the control unit controls the vehicle to act according to analysis results. In the vehicle lane changing process, through the hazard analysis, the lane changing action can be achieved safely and efficiently, and the driving safety and stability of the intelligent vehicle are improved.

The present disclosure provides a system for the synthesis of external sound of a vehicle, the system comprising a hazard analysis unit configured to detect a collision hazard between the vehicle and at least one further road user, in particular an outside traffic participant; at least one electroacoustic transducer; and a sound processing unit configured to generate an audio signal representing an, in particular vehicle dependent, synthetic noise signal and to control the at least one electroacoustic transducer to output a synthetic external sound based on the audio signal, wherein the sound processing unit is configured to modify the audio signal to enhance the perceptibility of the synthetic external sound by the further road user upon detection of the collision hazard.

A system for hazards analysis includes: a memory device for storing a program; a processor in communication with the memory device, the processor operative with the program to: access the memory device to obtain information specifying a system to be analyzed; build functional block diagrams using the information specifying the system to be analyzed; receive user-input hazards analysis elements; and use the functional block diagrams, the user-input hazards analysis elements and tree fault analysis for hazards analysis.

The invention provides a laser radar-based intelligent early-warning evaluation method for a power transmission line. The method comprises the following steps: information obtaining of the power transmission line, three-dimensional graphic modeling of the power transmission line, data analysis and judgment, and early-warning and power transmission line security evaluation. High-density and high-precision laser radar point cloud and optical image data on an ultra-high-voltage or high-voltage power transmission line are obtained by a laser radar scanning system carried by a helicopter platform; rapid high-precision three-dimensional measurement and spatial analysis of the power transmission line are achieved; and the analysis is applied to specific inspection and management work, such as sag calculation, line windage yaw check after three-dimensional modeling and line hazard analysis, in power transmission line operation and maintenance. The invention further provides a laser radar-based intelligent early-warning evaluation system for the power transmission line. The system comprises a power transmission line information obtaining unit, a data processing unit, a data storage unit and a feedback unit. According to the system, inspection and early-warning of the power transmission line can be rapidly and accurately achieved; and a safety evaluation report can also be provided to a user.

The invention discloses a fatigue life evaluation method of a component based on a nonlinear fatigue damage accumulation theory, which comprises the following steps of: adopting a finite element analysis model to carry out stress analysis on the component under at least one working condition, and selecting a region with a stress value greater than a set stress as a hazard analysis region under theworking condition; obtaining the maximum and minimum of stress and strain in the hazard analysis area by simulating the load on the finite element analysis model of the component in one mission. According to the maximum and minimum value of stress in the hazard analysis area, the equivalent stress of each working condition is calculated. According to the maximum and minimum value of strain in thehazard analysis area, the fatigue life prediction value of the component under each working condition is predicted. According to the equivalent stress and fatigue life predicted under each working condition, the fatigue cumulative damage of the member under stress spectrum is calculated. According to the accumulated fatigue damage, the fatigue life of the component is calculated.

The invention discloses a boiler combustion and waste heat recovery integrated monitoring intelligent control system which comprises a field instrument, an alarm device, a control valve, a main controller and an information platform. The main controller collects water temperature, smoke temperature, accumulated and instantaneous recovery heat, cooling water flow, harmful gas discharge, oxygen content, the temperature and the flow of water supplied by a boiler and boiler energy consumption information, the heat efficiency of the boiler is calculated, equipment resistance change, harmful gas and the boiler combustion condition are monitored, adjustment is carried out, local and remote alarming is achieved, and the communication with the information platform is achieved. The boiler combustion and waste heat recovery integrated monitoring intelligent control system has the advantages that operation stat parameter monitor, harmful gas monitor, waste heat recovery heat monitor, boiler heat efficiency monitor and analysis, fault and potential safety hazard analysis alarming and remote monitor are integrated, the problems existing after waste heat recovery equipment is added to a smoke exhaust system are solved, and the integrated monitoring intelligent control system is effective.

A newly-developed aviation electronic product hardware comprehensive FMECA method comprises the first step of defining a system to be analyzed, the second step of determining fault modes and reasons of appointed layers of a product based on a fault information database, fault mechanism analyzing and a fault module exposure test method, the third step of acquiring fault effects based on a fault simulation analytical method, the fourth step of carrying out the quantification hazard analysis, taking the multiple fault effects caused by the redundancy design into consideration and providing a quantification hazard analyzing method based on the multiple fault effects, and the fifth step of filling in an FMECA table and filling the fault modes, the reasons, the effect and the hazard degree all of which are acquired through analyzing into the FMECA table. The newly-developed aviation electronic product hardware comprehensive FMECA method is a hardware FMECA method based on the fault information database, fault mechanism analyzing, fault mode exposure testing, fault simulating and analyzing and the multiple fault effects, and is capable of providing more objective quantification for design and analyze workers and providing a basis for the design improvement on electronic products.

A process hazard analysis (PHA) is performed in a data processing system. A chemical process to be evaluated is selected, after which a study type to be performed on the chemical process is also selected. The study type is conducted to evaluate the chemical process for the presence of hazard scenarios and any associated deficiencies requiring recommendations. After conducting the study, resolution plans to address the recommendations are generated. The study type used in the analysis may be customized or may be a known study type. The study type may use a risk matrix to generate a risk ranking for the hazard scenario. The risk matrix used may be created by the user, or may be a known risk matrix from another study type. After a resolution plan is generated, a resolution database may also be generated.

A software application implementable on a computer system is disclosed for performing process hazard analysis. The process has a plurality of nodes with equipment, and process data created by external applications is stored in a plurality of external databases on the computer system. Using the disclosed software application, the user creates a plurality of internal master lists for the software application by importing the process data from the external databases into the software application. The user can also export process data from the internal master lists of the software application to the external applications. The user compiles a node record for each node of the process by inputting information on the node. The user also accesses one or more of the plurality of internal master lists created in the software application and associates the process data for the each node into the node record. The node records for each node are organized according to one of a plurality of guidewords. The user can review the node records of the process by filtering the node records according to a selected guideword, nodes, equipment, or other process data.

A system for managing hazards in a construction site is presented. One aspect of the inventive subject matter includes a hazard management system comprising a hazard context database, a sensor interface, and a hazard analysis engine. The sensor interface is configured to acquire a site data feed that is representative of a construction site. The hazard analysis engine is configured to (i) instantiate a hazard object by comparing the site data feed to hazard criteria of the plurality of hazard contexts, (ii) update the hazard object based on the site data feed, (iii) generate hazard notification criteria related to the hazard object, (iv) obtain worker attributes from the site data, and (v) transmit a hazard notification to an output device when the worker attributes cause satisfaction of the hazard notification criteria.

The invention discloses a dynamic accident deduction simulation-based failure mode and influence analysis method. According to the method, in allusion to characteristics of analyzed objects, a function box of each module at the lowest agreed layer is constructed to construct a function box map; being different from the traditional operation of adding failure rates and carrying out reliability analysis on function modules, the method is characterized by constructing a dynamic accident deduction simulation model which comprises elements such as state, event and the like for internal behaviors ofeach function box, connecting all the function boxes into a whole through constructing logic and time relationships between the function boxes, and finally simulating dynamic operation processes of systems through a dynamic discrete event simulation method so as to find out failure events and generation probabilities of the systems and then carry out further failure influence and hazard analysis.The method disclosed by the invention is capable of solving the problem that the traditional failure mode and influence analysis method cannot carry out temporal logic analysis and combined functionfailure analysis.

A system for hazards analysis includes: a memory device for storing a program; a processor in communication with the memory device, the processor operative with the program to: access the memory device to obtain information specifying a system to be analyzed; build functional block diagrams using the information specifying the system to be analyzed; receive user-input hazards analysis elements; and use the functional block diagrams, the user-input hazards analysis elements and tree fault analysis for hazards analysis.

The invention relates to a method for obtaining a software security requirement by using module security analysis. The method comprises the following steps: establishing a corresponding security analysis module in a computer terminal aiming at each subsystem according to a requirement development module to be subjected to security analysis in the subsystem; performing security analysis on system software or specific software of the subsystem according to functional information and design decision information input by a database to generate a hazard analysis model; outputting the software security functional requirement and the corresponding design decision to the requirement development module and a design development module to form a new requirement development module and design development module. One information interface, which is suitable for coordinately developing a security-critical system by multiple mechanisms, is established; a system hazard analysis field model template is constructed in reference to related security standard to support security analysis personnel to analyze system hazard and capture specific software security requirement in a systematic and structural mode.

The invention discloses an oil refining enterprise equipment reliability performance management assessment method comprising the following steps that a fault-free performance, maintainability, effective utilization, durability and economical performance of equipment or a system are comprehensively considered and measured; b an index algorithm is defined according to fault mode and hazard analysis, root cause analysis, reliability engineering theory and life cycle cost analysis; c an oil refining enterprise equipment reliability performance management assessment index system is formed on the basis of performing index calculation; and d the concrete reliability performance management indexes of dynamic equipment, static equipment, electrical equipment and instrument equipment are formulated by using the oil refining enterprise equipment reliability performance management assessment index system so that the operation reliability of the equipment or the system is comprehensively assessed. The state-of-health of the equipment can be timely, accurately, completely and quantitatively reflected so that the fault rate of the equipment can be reduced, the equipment reliability performance management level can be enhanced and the objective of reducing enterprise operation cost can be achieved.

The present disclosure provides a system for the synthesis of external sound of a vehicle, the system comprising a hazard analysis unit configured to detect a collision hazard between the vehicle and at least one further road user, in particular an outside traffic participant; at least one electroacoustic transducer; and a sound processing unit configured to generate an audio signal representing an, in particular vehicle dependent, synthetic noise signal and to control the at least one electroacoustic transducer to output a synthetic external sound based on the audio signal, wherein the sound processing unit is configured to modify the audio signal to enhance the perceptibility of the synthetic external sound by the further road user upon detection of the collision hazard.

A system for analyzing a sample is disclosed. The system is comprised of a laser unit and a spectrometer unit. The laser unit is configured to emit a first laser pulse and a second laser pulse towards the sample with a pulse separation time of between about 1 microsecond to 20 microseconds. The laser unit includes an oscillator unit, a pre-amplifier unit and an amplifier unit. The oscillator unit is configured to generate the first laser pulse and the second laser pulse. The pre-amplifier unit is configured to receive the first laser pulse and the second laser pulse and increase the energy levels of each pulse to a first energy state. The amplifier unit is configured to receive the first laser pulse and the second laser pulse from the pre-amplifier unit and further increase the energy levels of each pulse to a second energy level prior to the pulses being emitted from the laser unit. The spectrometer unit is configured to capture emissions generated by the sample after the sample is struck by the first and second laser pulses then characterize the sample using the emissions.

The invention relates to a public security event processing method and system, a computer device and a storage medium. The method comprises the following steps: obtaining public security monitoring information, and determining that a public security event exists according to the public security monitoring information; determining a disposal process corresponding to at least one disposal departmentaccording to the public safety event and a preset potential safety hazard analysis model; and correspondingly sending the treatment flow to at least one cooperative treatment terminal. By adopting the method, the emergency linkage efficiency of a plurality of functional departments can be improved, the information transmission efficiency is improved, the division of labor of each cooperative department is clear, the solving efficiency of public security events is improved, the event expansion is effectively prevented, the development of the public security events is controlled, and a powerfulguarantee is provided for the urban public security.

The invention relates to a cloud remote monitoring device, comprising the following parts: a data acquisition module, used for acquiring and uploading sensor data; a data storage module, used for storing the data, abnormal information and alarm information uploaded by the data acquisition module in a cloud server; a system control module, used for controlling data acquisition and storage and command parsing and transmission; and a data and hazard analysis module, used for performing energy analysis and hazard analysis. The cloud remote monitoring device has the functions of cloud storing, analyzing and fault processing, which improves the processing efficiency of sudden faults, and reduces the fault processing cost.

The invention discloses a petroleum drilling rig / workover rig equipment integrity management method and system. The method comprises the following steps of: establishing a database of petroleum drilling rig / workover rig equipment; carrying out importance degree evaluation on equipment which implements integrity management, and recognizing important objects; formulating a maintenance outline, and formulating and optimizing the maintenance outline according to the importance degrees, risks and operation states of the equipment; carrying out fault mode influence and hazard analysis on the important equipment; carrying out integrity evaluation on the equipment by combining results of the equipment importance degree evaluation and the fault mode, influence and hazard analysis; optimizing the maintenance outline and risk analysis according to the equipment integrity; and carrying out performance evaluation on the whole equipment integrity management process, and feeding back the performanceto each link to carry out optimization. The invention furthermore discloses the petroleum drilling rig / workover rig equipment integrity management system. According to the method and system, operationreliability of field drilling rig / workover rig equipment is improved, the operation safety is ensured, the operation cost is reduced and the production efficiency is improved.

A method for managing hazards in a construction site is presented. One aspect of the inventive subject matter includes a hazard management process that utilitizes a hazard context database, a sensor interface, and a hazard analysis engine. The sensor interface is configured to acquire a site data feed that is representative of a construction site. The hazard analysis engine is configured to (i) instantiate a hazard object by comparing the site data feed to hazard criteria of the plurality of hazard contexts, (ii) update the hazard object based on the site data feed, (iii) generate hazard notification criteria related to the hazard object, (iv) obtain worker attributes from the site data, and (v) transmit a hazard notification to an output device when the worker attributes cause satisfaction of the hazard notification criteria.

The invention discloses a space filter value-based logistic regressive landslide hazard analysis method. Aiming at analytical investigations of landslide hazards, a space filter value thought is imported into a common logistic regression model so as to design a regressive landslide analysis algorithm which comprises the steps of non-landslide site selection, disaster-inducing factor obtaining andgrading, adjacent matrix construction, feature value and feature vector calculation, stepwise regression feature vector selection and regressive modeling. According to the method, the problem that themodel precision is not high as logistic regression models are influenced by spatial autocorrelation between variables can be solved. By adding filter value operators which are constructed by utilizing selected feature vectors into logistic regression models, autocorrelation influences of residuals can be effectively filtered, the fitting goodness and prediction correctness of the regression models can be improved and correct simulation and prediction for landslide hazards can be realized.

The invention relates to a preparation method of a gas sample in vinyl gas chromatography analysis of 110 methylvinyl silicone rubber. The preparation method comprises the following steps of: adding potassium hydroxide to a sample under certain conditions for pyrolysis to generate an ethylene gas; collecting the gas with a head-space sample bottle; detecting the gas by a hydrogen flame ionization detector through adopting a gas chromatography; and quantifying the gas by an external standard method. The preparation method of the gas sample, disclosed by the invention, is simple in preparation method, short in test time and reduced in analyst body health damage caused by poisonous and harmful reagents and pollution to environment caused by recycling and discharging of waste liquor and meets the requirements of production and detection.

The invention relates to a construction safety management method and device based on an unmanned aerial vehicle, and computer equipment, and the method comprises the steps: obtaining construction information, so as to obtain initial information; building a BIM model of a construction stage according to the initial information to obtain a construction model; performing region division and region marking on the construction model to obtain a safety protection region; acquiring a picture obtained by inspecting the safety protection area by the unmanned aerial vehicle to obtain a to-be-identifiedimage; processing and identifying the to-be-identified image to obtain an identification result; performing potential safety hazard analysis according to the identification result to obtain an analysis result; and sending an analysis result to the terminal for reminding. According to the invention, the construction model is generated by combining the construction information with the BIM technology, the construction model is subjected to region division, and image recognition and safety analysis are carried out in cooperation with the image shot by the camera device on the unmanned aerial vehicle, so the management efficiency is improved, the management cost is reduced, the informatization application level is improved, and the personnel injury is reduced.

The invention relates to a risk oriented hazard analysis method for a chemical process device. The risk oriented hazard analysis method is mainly used for solving the problems that in the prior art, when risk oriented hazard analysis is carried out on a chemical process device, time consumption is high, and investment is large. By the adoption of the risk oriented hazard analysis method for the chemical process device, the safety integrity level is determined when a safety instrument system is taken as a protective measure; when the safety evaluation on the functions of the safety instrument system is carried out, a risk graph is used for analyzing the risks related to danger sources, a set of risk parameters are used for evaluating the risk levels, a risk level is assigned to each danger source, and an improved and extended ROHA process risk graph is used for determining the safety integrity level. The risk oriented hazard analysis method is characterized in that according to the technical scheme shown in the ROHA process risk graph (shown in figure 1), the problems are effectively solved, and the risk oriented hazard analysis method can be used for risk oriented hazard analysis of the chemical process device.

The invention discloses a PHA (preliminary hazard analysis) anchor rod and a construction method thereof and belongs to the technical field of support. The PHA anchor rod comprises an anchor rod body which is sleeved with a precast tubular outer-anchoring element. The construction method includes the steps of 1), forming a hole; 2), jacking the precast tubular outer-anchoring element and continuously jacking a steel sleeve on the outer end of the precast tubular outer-anchoring element; 3), inserting the anchor rod body into the precast tubular outer-anchoring element, potting high-grade cement slurry or cement mortar, and pulling out the steel sleeve after completing potting; 4), supplementing the slurry; 5), tensioning and locking. The outer-anchoring element is taken as a precast part, on-site working hours can be shortened, the outer-anchoring element is higher in strength as compared with a cast-in-place anchoring element, and cracking and destroying are less easily to occur; the anchor rod body inserted does not need to be taken out, so that construction is facilitated with good effect; the precast outer-anchoring element is tightly combined with soil in the hole, the slurry can be prevented from forming gaps with the soil after shrinking; all grouting takes place inside the outer-anchoring element, secondary splitting grouting technology is not adopted, and disturbance upon the soil is reduced.

The invention discloses a gas pipeline jet flame effect range prediction method in the technical field of gas pipeline safety prevention and control, and the method aims to solve the technical problemthat in the prior art, due to the lack of research on jet flames of different leakage angles of pipeline natural gas, the classical prediction model generalizes the jet flames of various angles whenthe hazard analysis is carried out, so that the calculation error is large, and the accurate reference cannot be provided for safety prevention and control work under complex conditions. The method comprises the following steps that pipeline design parameters and surrounding environment data are collected; the heat flux corresponding to the preset damage degree is determined; and each angle jet flame effect range corresponding to the preset damage degree is calculated and obtained according to the pipeline design parameters, the surrounding environment data and the heat flux.

The invention discloses a method for carrying out hazard assessment by risk analysis (hereinafter referred to as HARA) on road vehicle speediness, and aims at rapidly assessing automotive safety integration levels (hereinafter referred to as ASIL levels). The method comprises the following steps of: estimating exposure probability levels E0, E1, E2, E3 or E4 of operation scenes; combining hazardswith the operation scenes to obtain hazard events and assessing ASIL levels of the hazard events; when a hazard event, the ASIL level of which is assessed to be ASIL D, exists, completing the assessment process; and when a hazard event, the ASIL level of which is assessed to be ASIL C, B, A or QM, exists, removing the operation scenes, the exposure probabilities of which are below E3, E2, E1 or E0, from a library, combining the hazards with the residual operation scenes in the library to obtain hazard events, assessing ASIL levels of the hazard events until operation scenes not combined withthe hazards do not exist in the operation scene library, and completing the assessment process. According to the method, the frequency of assessing the ASIL levels of the hazard events is effectivelydecreased, the time is saved and the HARA speed is improved.

The invention provides a full path typhoon hazard analysis method based on statistical dynamics. A generating model is used to generate annual occurrence times and occurrence positions of typhoon, and a one-dimensional kernel probability density function and a three-dimensional kernel probability density function are used to estimate the annual occurrence times of the typhoon and the probability density of the generating positions of the typhoon on the ocean, and in addition, a Monte Carlo method is used to simulate the annual occurrence times and the occurrence positions of the typhoon. The simulated annual occurrence times and the simulated occurrence positions of the typhoon are substituted into the mobility model of the statistical dynamics to simulate the positions of the typhoon in every six hours after the generating of the typhoon, and at the same time, an intensity model is used to estimate the intensity of the typhoon in every six hours. The generating positions of the typhoons simulated by the generating model of the kernel density probability function are not limited by historical generating positions, and a defect of less typhoon generating point samples caused by an empirical full path model directly using the historical generating positions is overcome.

The invention discloses a spacecraft aerodynamic fusion orbit perturbation analysis method, which relates to the field of aerospace forecasting, comprehensively considers the influence of refined cross-basin aerodynamic modeling and attitude rotation effect, and forecasts the decay orbit information of a spacecraft in advance. The method overcomes the defect of insufficient consideration of aerodynamic influence factors in a traditional technical method, can significantly improve the prediction precision of the on-orbit flight and reentry process of the large uncontrolled spacecraft, can perform pre-judgment in advance, and provides a basis for prediction of information such as the position at the reentry moment, and the problem solving and forecasting, hazard analysis and risk assessment of the return and reentry process of the large-scale uncontrolled spacecraft can be carried out; and meanwhile, a multidisciplinary coupling research and optimization design technology for the problems of uncontrolled reentry, maneuvering orbital transfer and the like of a large spacecraft can be supported.