331 results about "Process safety" patented technology

System and method for processing a safety signal in an autonomous vehicle. Safety signals are typically generated in response to the detection of unsafe conditions or are sent by the vehicle operator. In either case, the safety signals are conveyed using redundant communication paths. The paths include a computer network and a current loop. The safety signals are processed, thereby causing actuators (e.g., linkages) to manipulate input devices (e.g., articulation controls and drive controls, such as a throttle, brake, tie rods, steering gear, throttle lever, accelerator, or transmission shifter). The manipulation ensures the vehicle responds appropriately to the safety signals, for example, by shutting down the vehicle.

System and method for processing a safety signal in an autonomous vehicle. Safety signals are typically generated in response to the detection of unsafe conditions or are sent by the vehicle operator. In either case, the safety signals are conveyed using redundant communication paths. The paths include a computer network and a current loop. The safety signals are processed, thereby causing actuators (e.g., linkages) to manipulate input devices (e.g., articulation controls and drive controls, such as a throttle, brake, tie rods, steering gear, throttle lever, accelerator, or transmission shifter). The manipulation ensures the vehicle responds appropriately to the safety signals, for example, by shutting down the vehicle.

The present invention provides a stamping machine, a stamping control method and a system thereof, wherein the method includes the following steps: opening the paper inlet and outlet door and moving in the stamping document to be used, and moving the stamping document to be used into a closed stamping machine , form the corresponding electronic text and / or graphic file of the document to be used, and display the picture of the document; automatically control the mobile seal, and control the seal to move to the corresponding printing position of the document to be printed according to the input printing command; complete stamping; remove the stamp After the file is removed, the sealed file is removed from the seal printing machine; the paper in and out door is closed. The printing machine and system adopting the above method realize the closed electronic control of the seal, and the whole printing process is carried out under the guarantee of safety, confidentiality and reliability, and has functions such as recording, verification and supervision.

The invention relates to a module and a method for LINUX host computing environment safety protection, which belong to the field of computer system safety, and solve the safety threats to an LINUX host. The module comprises an executable file protection module, an anomalous detection module and an inner core key data structure protection module, wherein the executable file protection module is used for registering, canceling, completeness protection functions of an executable program, and carrying out completeness detection before the operation of any program so as to ensure the process safety of a user state loaded in an internal memory; the anomalous detection module is used for setting up a process lawful action set, extracting process actions in a system during the operation process, and jugging whether the process action is anomalous or not through being matched with a normal action so as to prevent the process from being infected by a rogue program; and the inner core key data structure protection module is used for providing the backup, completeness detection and recovery functions of the inner core important data structure in the operating system, detecting whether the inner core important data structure is modified or not during the operation process, and recovering the important data structure according to the previous backup if the inner core important data structure is modified. The module and the method can completely and effectively protect the operation environment safety of the LINUX host.

The invention discloses a through rib-typed arched girder tunnel construction method, comprising the steps as follows: before the excavation of the tunnel, the arch slope is reinforced by transverse pipe roof; the shaft excavation is carried out by a type of stepped excavation and reserving rock arch; after the wall rock deformation is basically stable, the internal side arch secondary lining, arch ground beam, the rock fall-proof retaining block, the rib-typed arched girder and the anti-collision wall are wholly constructed; the metering of each construction circulation excavation is 10-12m and the whole construction length is 6-8m. The invention is a set of whole construction method for the through rib-typed arched girder tunnel; the construction sequence and the supporting system are adaptable for the characteristics of the through rib-typed arched girder tunnel such as shallow burying, eccentric pressing and space forcing, effectively ensures the construction process safety and the stability of the tunnel structure, and provides a practically operatable construction technique for the generalization and application of the novel environmental-protective tunnel, namely, through rib-typed arched girder tunnel.

The invention discloses a method for preparing graphene from raw graphite ores through electrolysis. The method comprises the steps of crushing raw microcrystal graphite ores, sieving, and recycling raw materials which are not insufficiently crushed; preparing an electrode from raw microcrystal graphite ore powder or insufficiently-delaminated raw ores; electrolyzing the prepared electrode in an electrolytic tank, carrying out solid-liquid separation, and further delaminating a solid obtained by separation to obtain the insufficiently-delaminated raw ores and coarsely-prepared graphene; and separating and extracting graphene from the coarsely-prepared graphene. The method has the advantages of low cost, simple preparation process and device, simplicity in operation, good product quality, high process safety and large-scale production.

A cause and effect function block, which can be easily integrated into a function block diagram programming environment in a process plant safety system to implement the cause and effect logic specified by a traditional cause and effect matrix, includes a set of cause inputs and a set of effect outputs. A multiplexer within the cause and effect function block receives each of the cause inputs and is coupled to one or more state machines, with a separate state machine existing for each effect output. The multiplexer decodes each of the cause inputs and, based on the cause inputs and previously identified cause and effect matrix logic, provides a trip signal to one or more of the state machines. Upon receiving a trip signal, a state machine forces an associated effect output into a tripped or safe state. If desired, the state machine may then use one or more other signals, such as signals from a user or from the process, to transition between a set of different states used to safely return the process plant back to the normal operating state from the tripped or safe state.

The invention provides a financial cloud safety service platform based on a mobile terminal and a data protection method. The platform comprises a mobile terminal safety client, a client interface, a financial cloud safety service background and a service end port, wherein the mobile terminal safety client realizes safe communication with the financial cloud safety service background through the client interface, and realizes the safety connection and the data transmission of a third party through the service end port, the mobile terminal safety client is used for providing protection service for the mobile terminal, and the financial cloud safety service background can realize real-time collection, analysis and processing on danger of the mobile financial transaction. The financial cloud safety service platform can realize the different-level safety protection and safety management on various stages or various factors capable of causing the mobile financial problems, the full-process safety of the mobile financial service is ensured, and the rights and interests of each participants in the mobile financial transaction can be guaranteed.

The invention relates to a device and a method for producing sodium methyl taurate, in particular to a device and a method for continuously producing sodium methyl taurate in a pipeline mode. The method comprises the following steps of: adding sodium hydroxyethyl sulfonate, water, methylamine and catalyst into a storage tank, pumping the materials into a continuous pipeline reactor through a boosting pipeline pump under the high pressure of 10 to 25MPa, heating to the temperature of between 150 and 300 DEG C through heat conducting oil, and reacting for 10 to 60 minutes in the pipeline reactor; and feeding the materials into an evaporator after reaction, performing multistage distillation, decolorizing, moisturizing, refining, and thus obtaining the qualified sodium methyl taurate. The device is simple and high in process safety, the reaction conditions are easy to control, continuous production is realized, the yield reaches over 90 percent, the sodium methyl taurate is stable in quality, and large-scale production can be realized with low investment in the industry.

The invention discloses an application program starting control method and device. Starting of an application program locked by safety software is controlled by means of system service used for processing safety service in a system framework layer. The method includes the steps that after the safety service monitors a command to start the application program, the safety software in an application program layer is called; the safety software executes a user authentication and verification process on the basis of a starting event; the system framework layer determines to start or lock the application program according to a user authentication result. Due to the facts that the application program is not started directly and the safety software is called back, the application program can be started only when user authentication is successful, and the application program is locked when authentication fails, so that the problem that the application program flashes due to the fact that the application program is started firstly and then the safety software is used for locking the application program is avoided, and the problem that CUP time is wasted in timed training in rotation is avoided.

The invention discloses modularized bud-opening powder for a display shell. The bud-opening powder includes a nitro-cotton component. The internal part of the bud-opening powder has a large number of micropores which are blocky in shapes. The sizes and the shapes of the micropores are determined according to the diameter and the shape of the display shell and a setting shape needing to be reached. The method for preparing the modularized bud-opening powder for the display shell comprises the following steps of: preparing firework powder with granular micropores firstly; and then, bonding and forming the firework powder with the granular micropores to prepare a powder block matched with the display shell, wherein the process of bonding and forming the modularized powder comprises the following steps of: mixing a binder for forming, an ignitability reinforcing agent and the firework powder with the granular micropores; then, preparing the powder block in a specific shape from the mixed materials; and finally, drying the powder block. According to the modularized bud-opening powder, the problem of insufficient combustion of the bud-opening powder or powder residuals can be solved; the firing rate of bright beads is improved; the smoke generated in the bud-opening process is greatly reduced; and the process safety of firework products in the production process can be improved.

The invention belongs to the field of the preparation of chiral drug intermediates and particularly relates to a method for synthesizing a intermediate L-2-aminobutyrylamide hydrochloride of chiral drug levetiracetam. The method is characterized by taking 2-bromobutyric acid as a starting raw material and comprising the steps of: firstly, preparing a 2-bromobutyric amide intermediate, reacting the 2-bromobutyric amide intermediate to generate DL-2-aminobutyrylamide, and finally, splitting and salifying the DL-2-aminobutyrylamide to synthesize the L-2-aminobutyrylamide hydrochloride. Compared with the traditional synthesis method, the method has the advantages of mild reaction conditions, low cost, higher yield, greatly improved process safety, cheap and easily-obtained raw materials, simple unit operations and low requirements on equipment and is suitable for industrial large-scale production, amidation reaction is carried out at normal temperature and normal pressure, and the reaction is easy to control.

A petrochemical engineering wharf handling process safety early-warning system based on a LabVIEW comprises a video monitoring unit, a real-time monitoring unit, a safety management unit and an early-warning unit, wherein the real-time monitoring unit is especially used for monitoring parametric variation generated in liquid handling operation and comprises corresponding testing systems. The real-time monitoring unit collects signals of the concentration, temperature, pressure, flow and the like of liquid to be monitored and obtains related parameter values A, quantized values B of indexes in the safety management unit are manually input, and the parameter values A and the quantized values B are transmitted into a petrochemical engineering wharf handling process extension theory early-warning model developed based on a LabVIEW platform; when all the parameters meet settings, the early-warning model is triggered, the current state of the handling process is provided, and an early warning is given under abnormal or nonstandard conditions to inform related personnel to take pre-control measures. According to the system, the functions of on-line monitoring early warning, data query and visual display of the parameters of liquid in an oil pipeline can be achieved in the handling process.

The invention discloses a safe dynamic health assessment method and assessment system for ethylene production. The system comprises a monitoring center. The system is characterized in that the monitoring center is communicatively connected with an internal memory database; the internal memory database is communicatively connected with a real-time database; and the internal memory database is provided with an alarm management module, a failure plan database management module, a parameter information management module, a sensor validity analysis module, an abnormal condition identification module, a process monitoring module, an SDG modeling module and a historical data recording module. The safe dynamic health assessment method comprises the steps that a device safety and health comprehensive index assessment model is established; through threshold judgment and feature extraction of key safety technology parameters, feature matching with established process safety and health comprehensive indexes is carried out; KPI and historical statistical data are combined for production process safe dynamic health intelligent assessment and early warning; device fluctuations are minimized to ensure safe and smooth operation of a device.

The invention discloses a tunnel construction process safety evaluation method based on a multi-element information early warning system. The tunnel construction process safety evaluation method comprises the following steps: (1) establishing a tunnel construction process safety evaluation index system; (2) establishing a judging matrix; (3) judging matrix consistency checking; if the consistency is not met, returning back to the last step; if the consistency is met, entering the next step; (4) calculating a weight coefficient; (5) evaluating a tunnel construction safety state by combining the multi-element information early warning system. By adopting the tunnel construction process safety evaluation method, the technical problems of a traditional evaluation method that great manual subjective factor influence and certain boundedness exist, many indexes cannot be comprehensively considered scientific analysis and processing cannot be carried out, and the like can be solved.

The invention discloses an active whole-process safety monitoring method for coal miner environment, which belongs to a system and a method for safety monitoring alarm, which fully embody humanization, provide effective means of active and autonomous alarm for coal miners, provide timely and precious alarm information for the coal miners to avoid dangers, and are capable of effectively preventing the coal miners from missing the alarm information after missing the alarm time and avoiding blindness of escape and self-help. The method includes a system setting method, an underground alarm method and a surface dispatching method. The method-based system comprises a surface monitor host, a system backbone network, network access equipment, intelligent miner's lamps and intelligent base stations. The intelligent miner's lamps are capable of automatically alarming, the miners can manually give alarm through the intelligent miner's lamps, and the system is used for level alarm.

The invention relates to the field of air conditioner control, in particular to an electric heating structure and an air conditioner compressor starting system and method. The electric heating structure comprises an electric heating control system and an electric heating device. The electric heating control system comprises a driving circuit and an electronic switch circuit. The driving circuit is used for adjusting the duty ratio of the electronic switch circuit. The electronic switch circuit is used for adjusting the output power of the electric heating device according to the duty ratio. The electric heating device is used for preheating an air conditioner compressor. According to the technical scheme, the output power of the electric heating device can be adjusted according to the exhaust temperature of the compressor; compared with the method that preheating is conducted by adopting a constant-power electric heating device in the prior art, the heating speed of the compressor is high, and the preheating process safety can be ensured; and accordingly, the starting waiting time of an air conditioner compressor system under a low-temperature environment is reduced, energy consumption is reduced, and meanwhile, the user experience effect is improved.

The invention discloses a skylight-forming lining structure repair method for tunnels. A local skylight is formed after original flawed concrete is removed and then closed through layered mesh concrete after lining repair steel bars are embedded, and then the original flawed part and surrounding qualified linings are connected into a whole through anchor rods, steel bar meshes, steel bar drilling nails and mesh concrete. The skylight-forming lining structure repair method is mainly used for repairing the diseases that tunnel lining concrete severely lacks thickness or strength or voids are formed in the backs of the linings, is easy to implement and can be used for repairing lining structures, the repair method and process are fast and effective, the repair time can be greatly shortened, and the construction process safety and the structural safety can be guaranteed. The skylight-forming lining structure repair method is especially suitable for reinforcing the tunnel linings of railways in operation and can bring great economic benefits.

The invention provides a console system suitable for a multi-satellite parallel test. The console system comprises a system scheduling module, an authentication and multi-satellite selection module, a general control communication module, a multi-satellite instruction selection module, a multi-satellite instruction transmitting module, a voice broadcast module, a multi-satellite sequence unified independent control module, a test sequence logic processing module, an emergency sequence logic processing module and an instruction and interpretation result processing module. According to the console system, instruction multilevel display and control and sequence multi-satellite parallel application problems under the multi-satellite condition can be fundamentally solved. Compared with existing satellite test technologies, whole satellite comprehensive test efficiency and working process safety, reliability and accuracy can be effectively enhanced, and test resource can be saved.

The invention discloses a method for automatically processing safety level DCS response time testing data in a nuclear power station. A simulated condition signal waveform file *.CSV recorded by a waveform recorder is automatically analyzed, and a corresponding phase step response point of each channel in each oscillogram can be determined, so that the response time of each output channel is determined. After multiple *.CSV files recorded under the same working condition are repeatedly analyzed, the files are summarized and screened, and the response time of the current equipment to be detected under the working condition is obtained. Due to computer automation and batch data analysis, a high-efficiency and reliable method is provided for analyzing the response time testing data of a reactor protection system.

A method for diagnostics of a high integrity protection system (HIPS) for protection of a pipeline downstream of a wellhead includes: monitoring for initiation of an automatic trip or manual safety shutdown or full shut-off test; determining the process safety time (PST) that elapses between the time at which the upstream pressure reached the trip setpoint and the time at which the upstream pressure reaches the maximum allowable piping pressure (MAPP) of the downstream pipeline; and verifying that the safety critical isolation valves stroked to the fully closed position within ½ PST and that the downstream pressure did not exceed the MAPP. If the verification is successful, no action is required, whereas if the verification shows that either of those parameters are not met, then the HIPS signals an alarm to operators, and in the case of a manual safety shutdown or full shut-off test, resets the pressure trip setpoint to a lower level.

The invention relates to N-substituted benzimidazole diamine and a preparation method thereof. The structure is shown as a general formula I. The preparation method includes conducting condensation and ring closing reaction through general formulas II and III and then conducting reduction reaction to obtain the N substituted benzimidazole diamine. A plurality of functional groups can be introducedat the N atom of benzimidazole, which brings different structures and properties to the material. The N-substituted benzimidazole diamine has short synthetic route, low cost and easy availability ofraw materials, high process safety, simple operation, low production cost and high reaction yield, thereby being suitable for industrial production.

The present invention relates to a method for preparing a lithium iron phosphate nanopowder, including the steps of (a) preparing a mixture solution by adding a lithium precursor, an iron precursor and a phosphorus precursor in a triethanolamine solvent, and (b) putting the mixture solution into a reactor and heating to prepare the lithium iron phosphate nanopowder under pressure conditions of 1 bar to 10 bar, and a lithium iron phosphate nanopowder prepared by the method. When compared to a common hydrothermal synthesis method, a supercritical hydrothermal synthesis method and a glycothermal synthesis method, a reaction may be performed under a relatively lower pressure. Thus, a high temperature / high pressure reactor is not necessary and process safety and economic feasibility may be secured. In addition, a lithium iron phosphate nanopowder having uniform particle size and effectively controlled particle size distribution may be easily prepared.

The invention provides a method for comprehensively analyzing and processing real-time alarms on the basis of attack strategy graphs and an intrusion detection system thereof; splitting of attack scene graphs can be effectively prevented, the complete attack scene graphs can be reconstructed, the subsequent attack can be predicted, attack scenes can be fused with one another, and alarm information capable of being directly utilized can be accurately provided for analysts. The method for comprehensively analyzing and processing the real-time alarm includes steps of (1), constructing the attack strategy graphs; (2), reconstructing attack scene graphs, adding missing alarms or inferences of attack links omitted deliberately by an attacker, utilizing inference results as inference alarms and adding the inference alarms into alarm sets to be associated; (3), predicting subsequent attacks; (4), fusing the attack scene graphs, expressing fused associated records by graphs, and acquiring fresh attack scene graphs. The method and the intrusion detection system have the advantages that splitting of attack scene graphs can be effectively prevented, and analyzing accuracy can be improved. The intrusion detection system is used for analyzing and processing safety events to alarms generated by the system by the analyzing and processing method.

The invention provides a risk degree grading method for fine chemical production process safety evaluation, wherein the method relates to the field of organic chemical process safety evaluation. The risk degree grading method comprises the steps of 1), acquiring a parameter; 2), calculating an evaluation index; and 3), performing risk degree grading; performing progressive sequencing of five key temperatures of an operation temperature obtained based on the steps, a highest temperature which can be reached by a synthesizing reaction after cooling failure of a reaction system, an initial temperature for product instable decomposition, a highest temperature which can be bear by a reaction kettle caused by restriction of technological conditions and a final temperature in a heat insulation condition, thereby forming different types, and grading according to a risk degree index. The risk degree grading method has advantages of appropriately and accurately evaluating a thermal runaway riskof the synthesizing reaction, guiding an optimal process operation parameter of a chemical enterprise, making risk reducing measures, guiding the chemical enterprise to select and define the risk reducing measure, improving process safety and improving economic benefit of the enterprise.

This invention discloses a method for synthesizing graphite fluoride and carbon fluoride by using NF3 as the fluorinating agent. The method comprises: (1) filling the solid raw materials into a reactor, and evacuating the reaction system; (2) pumping NF3in the reactor; (3) heating the reactor, and keeping the reaction temperature; (4) opening the gas circulating pump to maintain the gas flow; (5) reacting for 4-30 h, and stopping heating; (6) cooling to norma ltemperature, opening the reactor, and taking out graphite fluoride or carbon fluoride. The method uses NF3 as the fluorinating agent to synthesize graphite fluoride and carbon fluoride, thus solves the problems of low process safety, short equipment service life and high produc tcost, and has such advantages as high safety, long equipment service life, no explosion.

The invention discloses a cleaner production method and a use of a bisphenol compound anti-oxidant. The cleaner production method comprises that fatty aldehyde and dialkyl-substituted phenol as raw materials undergo a reaction in the presence of a solid acid as a catalyst in an enclosed environment and the reaction product is subjected to hot filtration so that a desired product is obtained. The desired product can be used for preparation of a lubricating oil composition or can be used as an antiager of plastic and rubber. The production method of the bisphenol compound anti-oxidant has the advantages of simple processes, mild conditions, use of a catalyst and raw materials with a wide source, a cheap price and easy availability, short reaction period, control convenience, high process safety, low energy consumption in production, high yield, high product purity, no use of moisture, an organic solvent and a surfactant in the reaction, no use of a water washing product in the later period, no production of waste water and control and reduction of pollutant discharge. The production method is a safe, energy saving and eco-friendly novel technology.

The present invention relates to a preparation method of 3,4,5-trifluorobromobenzene. The preparation method is simple in process, low in cost, mild in condition, friendly to environment, and high in process safety, and can effectively reduce the usage amount of bromine, as well as increase the product yield.

The invention discloses a device and a process for continuously producing 2-ethyl anthracene quinone in a channelization way. The device is shown in the figure, and the process is specifically shown as below: putting fuming sulfuric acid in a second storage tank; putting solid raw material 2-(4- ethyl benzene formoxyl) benzoic acid in a storage tank I; rising the temperature to 125-190 DEG C to keep the 2-(4- ethyl benzene formoxyl) benzoic acid in a liquid state; rapidly and evenly mixing the 2-(4- ethyl benzene formoxyl) benzoic acid in the storage tank I and the fuming sulfuric acid in a storage tank II in a Y-type jet mixer; and then filling the mixture in a pipe-type reactor, controlling the reaction temperature in the pipe-type to be 120-180 DEG C and the reaction time to be 2-10 min; and hydrolyzing the obtained reaction liquid in a hydrolization pot to separate out the product 2-ethyl anthracene quinone. The device has the advantages of simplicity, high process safety, easy control of reaction conditions, realization of serialization production, productivity reaching more than 90 percent, stable product quality and large scale industrial production by only less investment.

The invention discloses a method for growing a carbon nano-tube array with uniform tube diameter. The method mainly comprises the following steps: (A) depositing a buffer layer and a catalyst layer on a foil to form a composite substrate; (B) introducing a reducing gas, and reducing the catalyst on the composite substrate at a low pressure of 3-20kPa; and (C) introducing a gas mixture consisting of an inert gas, a reducing gas and a carbon-source gas, and in-situ growing the carbon nano-tube array on the composite substrate by adopting a chemical vapor phase deposition method at a low pressure of 15-40kPa. In the method, reduction of the catalyst and growth of the carbon nano-tube array are respectively controlled at the low pressure of 3-20kPa and the low pressure of 15-40kPa, so that the process safety can be improved, the grain diameter and appearance of catalyst grains and array growth can be effectively controlled, and the carbon nano-tube array with high quality and uniform tube diameter can be obtained. The height of the carbon nano-tube array is 100-350mu m, the tube diameter is distributed uniformly and between 8 and 20nm, and the standard deviation is less than 3nm.