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322 results about "Safety design" patented technology
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Prevention through design (PtD), also called safety by design usually in Europe, is the concept of applying methods to minimize occupational hazards early in the design process, with an emphasis on optimizing employee health and safety throughout the life cycle of materials and processes.
Design of computer based risk and safety management system of complex production and multifunctional process facilities-application to fpso's
InactiveUS20120317058A1Strong robust attributeStrong robust attributesDigital computer detailsFuzzy logic based systemsProcess systemsNerve network
A method for predicting risk and designing safety management systems of complex production and process systems which has been applied to an FPSO System operating in deep waters. The methods for the design were derived from the inclusion of a weight index in a fuzzy class belief variable in the risk model to assign the relative numerical value or importance a safety device or system has contain a risk hazards within the barrier. The weights index distributes the relative importance of risk events in series or parallel in several interactive risk and safety device systems. The fault tree, the FMECA and the Bow Tie now contains weights in fizzy belief class for implementing safety management programs critical to the process systems. The techniques uses the results of neural networks derived from fuzzy belief systems of weight index to implement the safety design systems thereby limiting use of experienced procedures and benchmarks. The weight index incorporate Safety Factors sets SFri {0, 0.1, 0.2 . . . 1}, and Markov Chain Network to allow the possibility of evaluating the impact of different risks or reliability of multifunctional systems in transient state process. The application of this technique and results of simulation to typical FPSO / Riser systems has been discussed in this invention.
Owner:ABHULIMEN KINGSLEY E
Flying mesh catapulting device for acquiring discarded spacecraft
The invention relates to a flying mesh catapulting device for acquiring a discarded spacecraft and particularly relates to a flying mesh catapulting device for on-track acquisition of a discarded spacecraft and track resetting, belonging to the field of space mechanism designs. The flying mesh catapulting device concretely comprises a flying mesh, a flying mesh catapulting device and a rope release and control mechanism. An initiating explosive device is catapulted in the acquisition device, and the flying mesh can automatically unfold and realize retention of configuration in the process of flying towards a target; and after the flying mesh finishes the envelopment for the target, a mass block for guiding the flying mesh to unfold can automatically tighten the opening of the mesh and lock the target by means of self residual kinetic energy, and meanwhile, a safety design and a reliability redundancy design are realized, so that the safety of the acquisition device is ensured. The flying mesh catapulting device has the advantages of light weight and small size so as to be convenient for realizing modular design; and the flying mesh catapulting device can be used as an on-track target acquisition executing mechanism of a space robot system and particularly suitable for an on-track acquisition and clearing tasks for the discarded spacecraft.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Predicting method for lithiumion cell heat safety performance
InactiveCN1987508ASafe responseSpeed ​​up the R&D cycleElectrical testingHot boxThermal insulation
The core of the technique is that the method builds thermal model of lithium ion battery under condition of abuse (for ex. hot box, short circuit, and overcharge) based on law of conservation of energy and Fourier law. Using thermal insulation technique for measuring heat determines kinetic parameter of internal heat source item in model; and other parameters come from documents and experiments. Using the model can forecast safety performance of battery under condition of abuse. Modifying model parameter obtains thermo-safety factors influencing lithium ion battery so as to provide theory basis of predicting safety critical value including size of battery, application temperature and material of battery for safety design of battery. The method reduces fussy working procedures for estimating safety performance of material and new battery by making actual battery and carrying out performance test. Advantages are: avoiding waste of resources and time, quick test speed, and low cost.
Owner:TIANJIN LISHEN BATTERY
High temperature fracture parameter test method and its device
InactiveCN101144785AAchieving Measurement AccuracyHigh precisionOptically investigating flaws/contaminationSpecial data processing applicationsData acquisitionEngineering
The invention discloses a high-temperature fracture parameter test device, which comprises a loading mechanism, a high-temperature heating furnace arranged inside the loading mechanism, a CCD camera, a data acquisition card and an electronic computer. The invention also discloses a high-temperature fracture parameter test method based on the device. The high-temperature fracture parameter test method and the device of the invention can realize the measurement under the condition of high temperature measurement, the precision is high, which can reach the micron level, and can realize the long-time measurement and accurate calculation of the fracture parameter measurement, and thereby providing basic data for the safety design, as well as the quantitative life assessment of the mechanical structure.
Owner:EAST CHINA UNIV OF SCI & TECH
Vehicle steer-by-wire device with redundant mechanism, and control method of vehicle steer-by-wire device
PendingCN110001765AImprove steering characteristicsReduce steering effortSteering linkagesAutomatic steering controlPinionSafety design
The invention discloses a vehicle steer-by-wire device with a redundant mechanism, and a control method of the vehicle steer-by-wire device. The vehicle steer-by-wire device comprises a steering manipulation mechanism, a steering execution mechanism, a first clutch device and a controller; the first clutch device is arranged at the rear end of a steering coil column, and used for connecting or disconnecting the steering manipulation mechanism and the steering execution mechanism; the controller controls the steering manipulation mechanism and the steering execution mechanism; and the steeringexecution mechanism comprises a main motor, a rack assisted steering transmission mechanism connected with the main motor, an auxiliary motor, and a pinion electric assistance transmission mechanism connected with the auxiliary motor. Through mechanical disconnecting of the steering execution mechanism and the steering manipulation mechanism, and redundant design of the steering execution mechanism, the reliability of a steering system for high-grade automatic driving is improved, and high-safety design of the steer-by-wire system is achieved.
Owner:BEIJING AUTONICS TECH
Device and system used for device-to-device secure communication
Owner:ALCATEL LUCENT SHANGHAI BELL CO LTD
Detection method and detector applied to integrated circuit for detecting electromagnetic fault injection attack
ActiveCN105391542AAchieve protectionSimple structureEncryption apparatus with shift registers/memoriesUser identity/authority verificationInformation securitySafety design
The invention relates to the field of information security, cryptography and encrypted circuits, provides detection on electromagnetic fault injection attack for information security related integrated circuits such as the encrypted circuit, and ensures to respond timely when the attack happens. Therefore, the invention adopts the technical scheme that: the structure of a detector applied to an integrated circuit for detecting electromagnetic fault injection attacks comprises phase inverters A1, A2, A3, A4 and A5, wherein the phase inverters are cascaded to form a ring oscillator, the ring oscillator is buffered through a phase inverter B and outputs a channel of oscillation signals directly input to a combinational logic delay comparative structure Detector1, another channel of oscillation signals is input to another combinational logic delay comparative structure Detector2 through the reverse action of a phase inverter C; and an input signal of each of the two Detectors is output to a clock input end of a trigger of the corresponding Detector through the combinational logic of the Detector. The detection method and the detector are mainly applied to safety design of the integrated circuit.
Owner:TIANJIN UNIV
A prediction method for thermodynamic responses and fatigue-creep damage of a high-chrome steel material
ActiveCN108931448AAccurate predictionEffective simulationMaterial strength using repeated/pulsating forcesSafety designThermodynamic process
A prediction method for thermodynamic responses and fatigue-creep damage of a high-chrome steel material is disclosed. The method includes constitutive model building, material parameter determination, numerical integration algorithm designing, damage analyzing, and the like. Compared with the prior art, the method can accurately simulate thermodynamic responses of the high-chrome steel material under different loading conditions, and can analyze fatigue, creep and fatigue-creep mutual damage of the material, thus providing a more reasonable and reliable theoretical model for service lifetimeprediction and safety design standards of supercritical generator unit components operated under complex changeable environments.
Owner:SOUTH CHINA UNIV OF TECH
Method of determining downstream design flood of cascade reservoirs
ActiveCN103276686AReflect flood control effectClimate change adaptationHydraulic engineering apparatusDesign floodMulti dimensional
The invention belongs to the field of flood control safety design of reservoirs, and relates to a method of determining downstream design flood of cascade reservoirs. The method comprises the following steps that by the adoption of the Copula function, multi-dimensional simultaneous distribution of the section flood volume and the regional flood volume of the reservoirs is constructed, the explicit expression of a conditional probability function is deduced, the frequency curve of the conditional probability is dispersed, and according to the principle of probability combination discrete summation, the design value and the corresponding probability of the annular maximum peak discharge of downstream sections are determined after flood regulation is conducted through the cascade reservoirs. The method can overcome the defects of traditional determination technologies of the design flood of the cascade reservoirs, and provides more comprehensive reference information for cascade planning and development of drainage basins.
Owner:WUHAN UNIV
Safety latching lifting hook
ActiveUS20110175385A1Improve safety factorEfficient use ofHook fastenersHooksLocking mechanismEngineering
The invention relates to a novel hook design which provides additional safety features to reduce the potential for accidents and provides additional protection to the operator. The invention may be applied to overhead hoist hooks, chain hooks, wire line hooks, and many other hooks. The safety design features include a spring activated trigger and latch mechanism, a latch stop, a trigger guard, and a trigger lock mechanism which may or may not utilize a spring to activate it. The safety latching lifting hook provides for ease of connection (hooking) and ease of release (unhooking) with a trigger guard to protect the operator's hand and the trigger latch mechanism.
Owner:PEMCO OF NEW MEXICO
Prediction method and device of thermal-runaway safety of power battery and computer-readable storage medium
ActiveCN108446434AShorten the design and development cycleImprove design efficiencySecondary cellsForecastingPower batteryElectrical battery
The invention relates to a prediction method and device of thermal-runaway safety of a power battery and a computer-readable storage medium. Initial autogenetic-heat temperature of the first power battery is obtained; the highest temperature at the time when a thermal runaway of the first power battery occurs is obtained on the basis of a thermal-runaway reaction kinetics model of the power battery; and the thermal-runaway safety of the first power battery is judged according to a relationship curve of the initial autogenetic-heat temperature and the highest temperature rise. According to theprediction method of the thermal-runaway safety of the power battery, the thermal-runaway safety of the first power battery can be predicted in a case of not making the whole battery, necessary processes of assembling the whole power battery in a traditional safety design process are reduced, a power-battery design and development cycle is shortened, design and development costs are saved, and efficiency of power-battery safety design is improved.
Owner:TSINGHUA UNIV
1400°C high temperature thermal-mechanical coupling test device for the airfoil structure of hypersonic aircraft
InactiveCN102262099AThermal-mechanical coupling test completedReduce the temperatureMachine part testingMaterial thermal analysisEngineeringActuator
The invention discloses a 1400-DEG C high-temperature thermal-mechanical coupling test device for the aerofoil structure of a hypersonic vehicle, which comprises a test sample of the aerofoil structure of the hypersonic vehicle, a silicon-molybdenum heating array, a water-cooled metal-loading component, a U-shaped water-cooled channel, a force sensor, a hydraulic actuator, a temperature sensor and a computer. Because the water-cooled metal-loading component is designed into a U-shaped hollow structure, the problems of high-temperature softening and deformation existing in the metal-loading component at 1400 DEG C are solved by using a method of cooling the inside of the metal loaded component with flowing liquid, the high-temperature (up to 1400 DEG C) thermal-mechanical coupling test on the aerofoil structure can be realized, and the ultimate strength of the aerofoil structure in high-temperature thermal-mechanical complex environment and other important parameters can be obtained, thereby providing a reliable basis for the safety design of a hypersonic vehicle structure in high-speed, high-temperature thermal-mechanical coupling environments.
Owner:BEIHANG UNIV
Multi-variable flood recurrence period calculating method considering reservoir flood routing calculation
The invention discloses a multi-variable flood recurrence period calculating method considering reservoir flood routing calculation. The method is characterized in that symbolic regression is carried out to calculate an explicit representation through genetic programming; a joint probability density function is calculated through a Copula function; then the joint probability density function is subjected to integral operation in a safe area to obtain cumulative probability of the specified annular maximum water level, and finally single-variable recurrence period of the specified annular maximum water level can be calculated as the multi-variable flood recurrence period under the consideration of the reservoir flood routing calculation. According to the method, the reservoir flood routing calculation is considered; a dangerous area is defined based on the annular maximum water level isoline, and thus the hydrological failure mechanism of a reservoir dam can be accurately expressed; the method is applicable to flood dispatching rules at any complexity degree, and scientific and reasonable basis can be provided to the flood control safety design of a reservoir.
Owner:WUHAN UNIV
Window curtain safety design
A window curtain safety design, having particular use in a window curtain set which utilizes a looping pull cord that can be pulled single-handed to alter shading condition of a window curtain, and which provides a safety design preventing the dangling closed end of the pull cord from accidentally entangling the limbs. The present invention provides a roll-up control unit, and when the roll-up control unit is subjected to inappropriate excessive pulling forces from two sides of a pulling component (pull cord), then essential components within the roll-up control unit form an opening operation, which causes the entire length of the pulling component to separate and form a separated free state which releases the binding forces at the lower end of the pulling component, thereby achieving the objective of maintaining safety of the limbs.
Owner:TUNG CHENG TSUNG +1
Passive residual heat removal system for high temperature gas cooled reactor
InactiveCN102332313ASimple structureReduce failure rateNuclear energy generationCooling arrangementReactor pressure vesselCooling tower
The invention relates to the technical field of safety facilities of a reactor, and discloses a passive residual heat removal system for a high temperature gas cooled reactor. The system comprises a plurality of sets of independent residual heat removal sequences, wherein each set of residual heat removal sequence comprises a water cooled wall (1), an air cooler (5), an air cooling tower (6), a reactor pressure vessel (7) and a reactor cabin (8); the water cooled wall (1) is positioned in the reactor cabin (8) and encircles the reactor pressure vessel (7); the installation position of the air cooling tower (6) is higher than that of the water cooled wall (1); and the air cooler (5) is arranged in the air cooling tower (6). A simple passive residual heat removal system is designed by utilizing a passive safety design concept and a little equipment, is only dependent on natural circulation when operated, is not required to be driven by any external force, and is provided with respective independent redundant circulation loops, so that the system is prevented from failing due to the failure of an active part, and the operation safety of the reactor is improved.
Owner:TSINGHUA UNIV
Testing system and method for interaction study of melt and liquid metals
ActiveCN107331425AEffect of Fragmentation PropertiesNuclear energy generationNuclear monitoringDifferential pressureLiquid metal
The invention discloses a testing system and a testing method for interaction study of melt and liquid metals. The system comprises a test vessel, wherein a heating furnace is mounted inside the test vessel; materials are heated and molten through electromagnetic induction heating so as to obtain high-temperature melt; high-purity metal sodium in the test vessel is provided by a sodium storage tank connected with the bottom of the test vessel, impurity-containing metal sodium discharged by the test vessel is received by a depositing tank and purified by a filtering device on a pipeline, and the purified metal sodium is discharged into the sodium storage tank again; and the testing system comprises an argon circuit and a vacuum pump, and air in the testing system is removed in vacuumizing and argon filling manners so as to provide inert environmental protection for the testing system. In addition, flow of the liquid metal in the testing system is realized by virtue of differential pressure between the gravity and the vessel. The experiment for interaction between the melt and the liquid metal is carried out, so that the fracture behavior characteristic of the melt in a coolant is disclosed, and assessments are provided for safety design of liquid metal reactors.
Owner:XI AN JIAOTONG UNIV
Road speed-buffering fault vision line-marking method
InactiveCN101250859AImprove visibilityReduce speedClimate change adaptationTraffic signalsDriver/operatorAcute angle
The invention relates to a road deceleration interlaced vision marked line method, which comprises at least two lane road marked lines which are regarded as parallel lines along a traffic direction on a road, two oblique lines which are symmetrically arranged are respectively crossed with acute angles of the two parallel lines, ends which are arranged on the middle portions of the two parallel lines are connected by a transverse line which is perpendicular to the parallel lines, a section of an interlaced vision marked line are formed by an oblique line which is crossed by the two acute angles and the connecting parallel lines between the parallel lines, and a plurality of groups of equi-spaced interlaced vision marked line sections are arranged on the interval of the road with a certain length to form the road deceleration interlaced vision marked line. The road deceleration interlaced vision marked line has important roles at the aspects of increasing the visibility, reducing the vehicle speed and reducing the accident rate and the like, is capable of increasing the highlighting of road dangerous sections (intersections) and increasing the alertness of drivers, the conscious deceleration effect of the drivers is obvious, and the road deceleration interlaced vision marked line method has the practical value of preventing and reducing the happen of traffic accidents. The deceleration interlaced vision marked line method is capable of being used for the safe design and improvement of a road intersection, a traffic accident black-spot or a road section.
Owner:TONGJI UNIV
Temperature-triggered passive accident residual heat removal system for pool type reactor
ActiveCN104269194AImprove reliabilityEfficient take awayNuclear energy generationCooling arrangementSystems designFree cooling
The invention discloses a temperature-triggered passive accident residual heat removal system for a pool type reactor. The system consists of a direct reactor core cooling system and an auxiliary reactor safety container cooling system. The system has the significant advantage that the direct reactor core cooling system and the auxiliary reactor safety container cooling system share one air cooling system, so that the system design of the reactor is greatly simplified, and the construction cost is saved. The auxiliary reactor safety container cooling system realizes natural cooling through ambient air on the outer side of a safety container, and the process has the characteristic of passiveness. The passive accident residual heat removal system is passive, independent, high in efficiency and high in reliability and meets the safety design requirement for the pool type reactor.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
High temperature-distributed load thermal strength test device for plane structure of high-speed missile aerobat
InactiveCN102721612AGuaranteed to workReduce heat transfer rateMaterial strength using tensile/compressive forcesSafety designTemperature load
The invention discloses a high temperature-distributed load thermal strength test device for a plane structure of a high-speed missile aerobat, which comprises a plane high-temperature heating unit, a high-speed missile plane test piece, a thermostability insulation thin layer, a temperature thermocouple, a computer, a water sac loader, flexible heat insulation materials, a steel stressing plate, a hydraulic pressure actuator, a loading link rod, a ceramic frame and a force transducer, a thermal environment with a temperature above 1,000 DEG C is generated by the plane high-temperature heating unit, and a flexible heat separation is carried out between the water sac loader which can generate distributed load and a heat source. According to the thermal strength test device, uniform high-temperature distributed load is implemented to the plane structure of the high-speed missile in the thermal environment with a temperature above 1,000 DEG C, and a high temperature load test method closer to the actual stressing state is provided for a safe design of the high-speed missile structure. The device has important application values on military engineering.
Owner:BEIHANG UNIV
Heavy-duty-car rollover-preventing system
The invention discloses a heavy-duty-car rollover-preventing system, and relates to the technical field of heavy-duty-car safety design. The heavy-duty-car rollover-preventing system comprises a gyroscope, distance sensors, a controller, a control panel and hydraulic pressure assemblies. The gyroscope, the distance sensors, the control panel and the hydraulic pressure assemblies are connected with the controller, the gyroscope is installed at the bottom of a middle cross beam of an automobile frame, and the distance sensors are installed at the bottoms of the two sides of the automobile frame; and the hydraulic pressure assemblies are installed on the two sides of the automobile frame, and the control panel is installed in an automobile control room. In the working process, the gyroscope detects the side-lurching state of the automobile frame, the distance sensors detect the distance between the automobile frame and the road surface, and the gyroscope and the distance sensors transfer collected data to the controller; the controller analyzes the data comprehensively, and the side-lurching degree of an automobile is judged and displayed on the control panel; and a driver controls the motion of the hydraulic pressure assemblies through the control panel, balance of the automobile is kept, and the heavy-duty-car rollover-preventing effect is achieved through the technological means.
Owner:SHIJIAZHUANG TIEDAO UNIV
Device for monitoring changes of internal temperature and pressure of large lithium ion battery in thermal runaway occurrence and development processes
PendingCN107342443AGood effectContribute to safety performance research workSecondary cellsCell component detailsElectrical batteryEngineering
The invention discloses a device for monitoring changes of internal temperature and pressure of a large lithium ion battery in thermal runaway occurrence and development processes. The device comprises a battery casing, a thermocouple, a connecting structure body and a pressure sensor. The device specifically comprises a nut (1), a battery casing cover plate (2), a thermocouple fixing structural member (3), a fastening nut cover (4), the thermocouple (5), a hollow copper ball (6), a pressure sensor fixing structural member (7), a threaded plug (8), an electrode material (9), a nut (10) and the pressure sensor (11). The test design is mainly aimed at power and energy-storage equipment requiring large lithium ion batteries and the like. The thermocouple and the high-temperature environment pressure sensor are mainly used for detecting temperature and pressure change in the battery and contribute to monitoring of changes of internal temperature and pressure of the battery in the safety design process of the lithium ion battery.
Owner:UNIV OF SCI & TECH OF CHINA
Compound accident residual heat removal system for accelerator-driven sub-critical reactor
InactiveCN102623072AReduce the maximum possible temperatureMeet safety design requirementsNuclear energy generationCooling arrangementCold airFree cooling
The invention relates to a compound accident residual heat removal system for an accelerator-driven sub-critical reactor. The system consists of a reactor core direct cooling system and a reactor safe container auxiliary cooling system. The reactor core direct cooling system is connected with a main loop and consists of an independent heat exchanger, an air heat exchanger, a smoke discharge chimney and a connecting pipe. In addition, the reactor safe container auxiliary cooling system realizes natural cooling by virtue of ambient air outside the safe container, cold air reaches the bottom of the container through a descending pipe, hot air flows out of a safety shell through an ascending pipe, and the process has the characteristic of being non-active. The compound residual heat removal system has high efficiency, non-activity, independence and high reliability, and meets the safety design requirements of an accelerator-driven sub-critical reactor.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
Distributed protocol test system and method
InactiveCN102420727ASolve deployment difficultiesOrderly managementData switching networksTest efficiencyProtocol design
Owner:BEIJING UNIV OF POSTS & TELECOMM
Comprehensive evaluation method and system for thermal runaway safety of power battery
The application relates to a comprehensive evaluation method and system for thermal runaway safety of a power battery. With the comprehensive evaluation method, multi-scale mechanism analysis and comprehensive evaluation are carried out on the thermal runaway of a battery. According to comprehensive evaluation method, related thermal stability testing is carried at three dimensions of the batterymaterial, the battery pole piece and the single battery body. On the basis of comprehensive comparative analysis of the test data, influences on the thermal runaway of the single battery body by thermal characteristics of different components and the mutual coupling effects between components are determined by combining in situ and ex-situ observation and material characterization methods. The mechanism analysis and thermal safety quantitative evaluation of the thermal runaway of the battery are provided by combining the test result of the adiabatic thermal runaway of the single battery body.The comprehensive evaluation method and system have the important practical value and guiding significance in the safety design and thermal runaway prevention of the power battery for an electric vehicle.
Owner:TSINGHUA UNIV
Method and device for fault injection attack based on simulation
ActiveCN104391784AImplementation evaluationAny environmentSoftware testing/debuggingSafety designInstrumentation
The invention discloses a method and a device for fault injection attack based on simulation. Under the condition of using no special instrument equipment, before the chip flowing, the fault injection attack is implemented, and a protecting effect for the anti-fault injection safety design of the chip is evaluated. According to the invention, the fault injection attack for the chip is realized in a simulating mode, and the evaluation and analysis for the protecting effect for the safety design of the chip are realized with the minimum cost and the highest efficiency in any link of a chip developing flow under the condition of being independent from the specific realization of a chip safety protection scheme.
Owner:BEIJING CEC HUADA ELECTRONIC DESIGN CO LTD
Article theft detecting and alarming device and method based on intelligent video analysis
The invention provides an article theft detecting device and method based on intelligent video analysis. Whether articles are stolen or not is judged through comparing the similarity among all frames in a monitoring area by using a two-dimensional relevant algorithm as a detecting algorithm which has high sensitiviity and high anti-interference performance and ignores background influence after set without updating the target area pixel. The device based on the algorithm comprises a UPS (Uninterruptible Power Supply) functional power supply, a camera, an infrared lamp set, a DSP (Digital Signal Processor) algorithm analyzing circuit, an alarm circuit and video record storage equipment. The article theft detecting device and method based on intelligent video analysis can be applied to the field of theft prevention monitoring of various articles, an alarm signal is sent after the monitored article is moved away, a video within 15 seconds before and after the article is lost is stored and an investigation clue is provided for the public security bureau. The invention provides the novel device which applies an advanced electronic technology and multiple safety design and can monitor valuables in real time and prevents theft.
Owner:BEIJING YINCHUANG TECH +2
Right-turning lane design method by considering turning characteristic of large vehicle
The invention belongs to the field of traffic safety designs and lane designs. Aiming at the maximum sweeping path width and a difference of a radius between front inner wheels and a radius between rear inner wheels during right turning of a large vehicle, the invention provides a right-turning lane design method by considering a turning characteristic of the large vehicle. Compared with the conventional design method, the design method has the advantage that the safety, the efficiency and the land utilization are improved greatly. According to the technical scheme, the right-turning lane design method by considering the turning characteristic of the large vehicle comprises the following step of: calculating deflection of traces of a dragging articulated vehicle and a small coach, wherein (1) the width of a diversion lane is required to be equal to a sum of a wheel trace inner displacement, namely the maximum sweeping path width, and a lateral clearance, and (2) the right-turning trace of the large vehicle is fit by an asymmetric three-center composite curve with a relatively small curve radius of an entrance lane and a relatively large curve radius of an exit lane; and under the condition that the width of the diversion lane and an inner-arc radius are known, drawing the three-center composite curve of a right-turning lane. The method is mainly applied to lane design.
Owner:TIANJIN MUNICIPAL ENG DESIGN & RES INST
Robustness safety design method for multiple input multiple output (MIMO) communication system
ActiveCN105263135AExtend the life cycleEasy transferPower managementSynchronisation arrangementEngineeringOptimization problem
The invention discloses a robustness safety design method for a multiple input multiple output (MIMO) communication system. Receiving terminals of the method are each provided with a power separator that divides the received power to realize information decoding of the receiving terminal and energy collection simultaneously. If an idle receiving terminal is a potential eavesdropper, a sending terminal adopts methods of precoding and introducing artificial noise, thereby effectively improving system security rate and transfer efficiency of system energy. When the sending terminal only knows part of channel status information of the idle receiving terminal, the robustness safety design is described as a non-convex semi-infinite optimization problem. The non-convex semi-infinite optimization problem can be changed into a positive semi-definite relaxation problem by use of first order Taylor expansion and S-Procedure theorem, and the effective robustness safety design method can be finally provided through a convex optimization tool based iterative algorithm. With safe communication of the system guaranteed, the safety rate of the sytesm is improved remarkably, the energy transfer efficiency of the system is improved, and the communication and energy demands of the user are better met.
Owner:NANJING UNIV OF POSTS & TELECOMM
Mini two-wheel automobile
A design and a manufacturing method for mini two-wheel automobiles include an automobile realm and a motorcycle realm for manufacturing a mini automobile running with two wheels and kept its balance during running by a principle of a gyroscope, as if it were a motorcycle. When it stops or runs very slowly, an intelligent fall-down frame provided in the mini two-wheel automobile automatically moves down to keep the automobile body balanced on the ground. The mini two-wheel automobile also has other safety designs and structures, with light, safe, gas-effective, convenient and comfortable property.
Owner:LIN MIN JAN
Plant safety design assistance device and plant monitoring and maintenance assistance device
ActiveUS20130332383A1Easily exchange informationAccurate checkProgramme controlElectric testing/monitoringPlant safetyControl system
A Plant safety design assistance device (100) is configured by a communication device (140), a diagnostics and monitoring device (110), a fault inspection management device (120), and a design and manufacturing device (130) being interconnected via network (150). The diagnostics and monitoring device (110) receives plant status information (dc) from a plant control system (1) and carries out monitoring and diagnostics an the plant. The fault inspection management device (120) maintains fault inspection information (D2) of an apparatus which is used in the plant. The design and manufacturing device (130) maintains design and manufacturing information of the apparatus which is used in the plant. The design and manufacturing devise (130) receives the fault inspection information (D2) from the fault inspection management device (120), and carries out a plant safety design which takes the fault inspection information into account. The plant safety design is thus assisted, with the plant monitoring and maintenance activities being linked therewith.
Owner:MITSUBISHI HEAVY IND LTD
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