99results about How to "Improve passive safety" patented technology

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.

The invention discloses a safety system with a closed-loop negative Poisson ratio structure, of an automobile and a design method. The automobile safety system comprises a closed-loop framework structure formed by mutually and sequentially connecting the head end and the tail end of a front bumper, the head end and the tail end of a left energy absorbing box, the head end and the tail end of a rear bumper and the head end and the tail end of a right energy absorbing box; the front bumper is a front bumper crossbeam with a negative Poisson ratio structure filling core; the rear bumper is a rear bumper crossbeam with a negative Poisson ration structure filling core; the left energy absorbing box is a left energy absorbing box longitudinal beam with a negative Poisson ratio structure filling core; and the right energy absorbing box is a right energy absorbing box longitudinal beam with a negative Poisson ratio structure filling core. The design method comprises the following steps of firstly, establishing a parametric model of the bumper crossbeams and the negative Poisson ratio structure filling cores, and establishing an approximation model by combining Latin hypercube and a response surface method, and multi-objective optimization design is performed by applying multi-objective optimization algorithm in accordance with crashworthiness and light weight properties. By adopting the closed loop design and using excellent energy absorption property of the negative Poisson ratio structure, the automobile safety system disclosed by the invention can improve the energy absorbing and buffering capacity of the structure in the collision process of an automobile, enhance the protection of the automobile to occupants and pedestrians, and reduce the damage of collision to an automobile body.

The invention relates to a performance testing device of a carbon dioxide refrigeration compressor for trans-critical and sub-critical refrigeration systems. The prior art is improved in the way thata component for pressure regulation and pressure reduction is connected between a compressor exhaust opening and an exhaust flowmeter in parallel; a safety valve component A is arranged on an oil separator; a safety valve component B is arranged on a condenser; a safety valve component C is arranged on a liquid reservoir; a subcooler is connected between a shutoff valve C of an outlet of the liquid reservoir and an electromagnetic valve in series; a safety valve component D is arranged on the subcooler; a refrigerant filling and recovering storage tank is connected between an inlet of a mass flowmeter and an outlet of a shutoff valve E in parallel; a recovering shutoff valve and a recovering electromagnetic valve are arranged at the position of an inlet of the refrigerant filling and recovering storage tank, a filling shutoff valve and a filling electromagnetic valve are arranged at the position of an outlet of the refrigerant filling and recovering storage tank, and a safety valve component E is arranged on the refrigerant filling and recovering storage tank; and a safety valve component F is arranged on a gas cooler. In the invention, most of parts can adopt products of the conventional pressure resisting grade, thereby solving the problem of higher pressure of the whole system, reducing the cost and improving the safety of the system.

An exterior aircraft navigation light for an aircraft having a nominal forward flight direction and being able to fly into the nominal forward flight direction as well as into a plurality of further flight directions, such as sideways or backwards, has at least one light emission unit and control circuitry coupled to the at least one light emission unit, wherein the exterior aircraft navigation light is configured such that each of the at least one light emission unit has a unit-specific light emission direction that has a pre-defined horizontal angle with respect to the nominal forward flight direction, and wherein each of the at least one light emission unit includes a multi-color light source configured to emit red light, white light and green light, and an optical system for conditioning the red light, the white light and the green light emitted by the multi-color light source.

The invention discloses a draw gear assembly and a rail vehicle with the draw gear assembly. The draw gear assembly comprises a draw gear mounting seat and a draw gear fixedly arranged on the draw gear mounting seat, and further comprises guide components arranged on two sides of the draw gear mounting seat, wherein the guide components are provided with longitudinally tilting guide sliding chutes; the front ends of the guide sliding chutes are higher than the rear ends; and sliding blocks which are in sliding fit with the guide sliding chutes in the corresponding sides are fixedly arranged on two sides of the draw gear mounting seat, and are configured as follows: under an initial state, the draw gear mounting seat is fixedly connected with the guide components, and the sliding blocks are located at the front ends of the guide sliding chutes. The structural design of the draw gear assembly can guarantee a coupling function of the draw gear during normal operation; and when collision occurs, the draw gear can neither invade the upper parts of the guide components to damage upper equipment nor fall onto a rail to increase derailing risk in the backing off and energy absorption processes, so that the passive safety of rail vehicle collision can be improved.

A mounting device for aircraft comprises an energy absorber and wherein the mounting device is mounted between a primary structure of the aircraft and the interior equipment. In this way the load acting on an interior equipment connected to the primary structure of the aircraft by way of the mounting device can be limited if a crash impulse occurs. The load acting on the primary structure is also limited, which can result in enhanced passive safety for the passengers and in weight reduction.

The invention provides a railway vehicle and a head vehicle barrier-removing device thereof. The head vehicle barrier-removing device comprises a flow guide plate, a front end framework and longitudinal beams, the front end framework is mounted at the front end of the inner side surface of the flow guide plate, the longitudinal beams are disposed on two sides of the inner side surface of the flow guide plate, two ends of the front end framework are connected with the longitudinal beams on the two sides respectively, and the rigidity of connecting positions between the longitudinal beams and the front end framework is smaller than that of any position of the longitudinal beams and the front end framework. When barriers are cleaned or train collision occurs, if the collision force that is exerted on the barrier-removing device exceeds the maximum load value that the barrier-removing device can tolerate, large extruding deformation can occur at the connecting positions between the front end framework and the longitudinal beams, the front end of the flow guide plate can gradually backwards retract, then space is provided for an energy absorption part that is mounted at the front end of a head vehicle so that the energy absorption part can effectively absorb collision energy, finally, the vehicle passive safety is improved, and severe safety accidents such as vehicle climbing or derailing can be avoided.

A mounting device for aircraft comprises an energy absorber and wherein the mounting device is mounted between a primary structure of the aircraft and the interior equipment. In this way the load acting on an interior equipment connected to the primary structure of the aircraft by way of the mounting device can be limited if a crash impulse occurs. The load acting on the primary structure is also limited, which can result in enhanced passive safety for the passengers and in weight reduction.

The invention discloses a vehicle occupant type detection device based on a film switch technology and a use method thereof. The vehicle occupant type detection device comprises a sensor pad and an MCU (micro control unit) processing unit, wherein a sensing unit array produced according to the film switch technology is adopted by the sensor pad, and sensing units are connected in parallel. A type identification task is completed in the MCU unit according to the following steps: 1) every sensing unit is measured to obtain a binary body pressure distribution diagram; 2) extracting three characteristic parameters from the binary body pressure distribution diagram, i.e. the body pressure area, the sitting hip width and the body pressure concentration degree; and 3) obtaining real-time characteristic parameters of an occupant by adopting the parameters obtained in Step 2, inputting the characteristic parameters into a trained classifier to classify the occupant, and finally obtaining occupant type information. By adopting the device, physical characteristics of occupants can be identified effectively, and secondary damage of airbags to occupants as a result of differences of the physical characteristics of the occupants in a vehicle collision process can be reduced effectively.

The invention relates to an identifying method for the physical signs of vehicle passengers, which includes the following steps: a) the step of obtaining a pressure sensitive point: obtaining the physical sign data of the passengers with different passenger types and different sitting positions by a vehicle carrier pressure distribution measuring system, finding out a pressure sensitive area by analyzing and arranging a pressure measuring sensor array; b) the step of obtaining and processing pressure values used for identifying: arranging the pressure values under different passenger types and different sitting positions by a measuring system vehicle sensor; c) the step of identifying the physical signs of vehicle passengers: building the characteristic database with different typical physical signs according to the specific regulation requirements, obtaining a classifier model, inputting body pressure distribution data into a trained classifier to carry out sorting and finally transmitting the obtained physical sign information of the passengers into an intelligent safe air bag controller for the use of intelligent control of the controller. The identifying method provides a method for effectively identifying the physical signs of the vehicle passengers, can reduce the secondary damage on the air bag to the lowest point when the vehicle is impacted and can improve the passive safety performance of the vehicle.

The invention provides an asymmetric air bag restraint system, an air bag restraint system assembly and a vehicle, and relates to the technical field of vehicles. The asymmetric air bag restraint system comprises an air bag and an air generator. The air bag comprises a front piece with a round periphery and a back piece with a round periphery, the front piece and the back piece are overlapped and sewn at the boundary to form a sealed bag body, the front piece faces a driver, and the back piece backs onto the driver. The air generator is used for supplying air to the air bag so that the air bag can be expanded to the unfolded state from the folded state. The back piece is provided with an air generator installation hole used for installing the air generator, and the center of the air generator installation hole does not coincide with the center of the air bag. The air bag restraint system assembly comprises the asymmetric air bag restraint system and an air bag box, and the asymmetric air bag restraint system is arranged in the air bag box in a folded mode. The vehicle comprises the air bag restraint system assembly. The air generator is installed in the air bag in an eccentric mode, so that pressing force to the chest of the driver is reduced after the air bag is unfolded while the protective function for the head of the driver by the air bag is not lowered.

The invention discloses a dummy model design method for a crash test reflecting a driver protection posture to solve the problems that an existing dummy model cannot reflect protection postures like bending and stretching of limbs of a driver when a crash happens and is not high in biological simulation. The dummy model design method for the crash test reflecting the driver protection posture comprises the following steps that protection postures are collected, a crash site is reappeared so as to enable the driver to generate protection postures and achieve the collection of the protection postures at different vehicle speeds; dummy model parameters are designed, the dummy model parameters are designed correspondingly through confirmation of the limb length and joint positions of the driver; the dummy model protection postures are designed: the protection postures of the dummy model when the crash happens is designed; crash parameters are output: display of limb motion of the dummy model during the crash process is achieved, crash parameters are output and displayed, and evaluation is conducted on the biological simulation of the dummy model.

The invention discloses a draw gear component and a railway vehicle provided with the draw gear component. The draw gear component comprises: a draw gear mounting seat, and a draw gear, fixedly installed on the draw gear mounting seat. The draw gear component further comprises: a support component and a revolving part which are arranged on two sides of the draw gear mounting seat, wherein one end of the revolving part is in rotational connection with the lower end of the support component, and the rotational center thereof is arranged horizontally and is vertical to the length direction of the railway vehicle; the other end of the revolving part is hinged with the upper end of the draw gear mounting seat; and the configuration is that: in an initial state, the draw gear mounting seat is fixedly connected with the support component, and the hinge point of the revolving part and the draw gear mounting seat is positioned above the rotational connection point of the revolving part and the support component. The structural design of the draw gear component can guarantee the coupling function of the draw gear during normal operation, and when a collision happens, the draw gear not only cannot intrude into an upper part to destroy upper equipment but also cannot drop down to a railway to increase the derail danger in the retreating and energy absorbing process, so that the passive safety of a railway vehicle collision can be improved.

The invention discloses a passive safety type automobile seat. The passive safety type automobile seat comprises a seat main body and also comprises a seat adjustment device; the seat adjustment device is connected with the seat main body and used for prompting the seat main body to move forward and upward and then move backward when an automobile collision occurs; the seat adjustment device is arranged under the seat main body. According to the passive safety type automobile seat, the seat adjustment device with supporting and position reset adjustment functions is arranged under the seat main body and accordingly the front end of the seat main body can move forward and upward during the collision and then move backward rapidly, meanwhile a passenger on the seat main body moves backward along with the seat main body, and accordingly damage to a driver or the passenger of seat belts, an air bag and an automobile steering wheel or an instrument panel is reduced, the safety of the driving personnel is comprehensively protected, and the passive safety performance is high.

The invention is suitable for the technical field of intelligent control, and provides a seat control method and device, computer equipment and a storable medium. The method comprises the steps of obtaining vehicle risk information which comprises the distance information between a risk vehicle and a user vehicle and the azimuth information of the risk vehicle relative to the user vehicle, judgingwhether the user vehicle collides with the risk vehicle or not according to the distance information and the azimuth information, when judging that the user vehicle collides with the risk vehicle, determining the collision direction and the collision angle of the user vehicle and the risk vehicle according to the distance information and the azimuth information, calculating a rotation angle of aseat of the user vehicle according to the collision direction and the collision angle so as to control the seat to rotate according to the rotation angle. Passive safety of the vehicle in the collision process is improved, more effective protection is provided for a driver, and the method has practical significance in actively adjusting the orientation of the driver seat when the method is practically applied to inevitable collision of the vehicle.

The invention discloses a vehicle compound rear bumper based on a negative poisson ratio structure. The vehicle compound rear bumper includes a rear anti-collision beam, a front anti-collision beam and an energy absorbing inner core. The front anti-collision beam and the rear anti-collision beam are connected in a matched mode to form a shell body containing the energy absorbing inner core. A compound energy absorbing inner core is obtained by a plurality of composite cell arrays with identical structures, and each of the composite cells comprises a negative poisson ratio single cell structureand a regular hexagon honeycomb structure. The rear anti-collision beam and the front anti-collision beam form a shell body with a radian through welding, and the compound energy absorbing inner coreis installed in the shell body. The vehicle compound rear bumper has good energy absorption performance duringuse, and when the vehicle is tailgated and collided, the collision energy can be effectively absorbed, the damage to an occupant from the tailgating and collision can be reduced, and the passive safety performance of the vehicle can be improved through the own stable deformation of the vehicle compound rear bumper.

The invention discloses a negative poisson's ratio structure steering tubular column and a designing method for the same. The negative poisson's ratio structure steering tubular column comprises an upper tubular column housing, a lower tubular column housing, inner cores, a steering tubular column installation rack, a steering tubular column upper rack and a steering tubular column lower rack, wherein the lower tubular column housing is connected with the upper tubular column housing; a negative poisson's ratio structure is filled with inner core; the upper and lower tubular column housings are also filled with the inner cores; the steering tubular column installation rack can be fixed on a vehicle body; the steering tubular column upper rack is arranged between the upper tubular column housing and the steering tubular column installation rack to carry the upper tubular column housing; and the steering tubular lower rack is arranged between the lower tubular column housing and the steering tubular column installation rack to carry the lower tubular column housing. Deficiencies of limited energy absorption during automobile crash, complicate deformation energy-absorbing mechanism, low structural reliability and high cost of the steering tubular column can be overcome by the use of the negative poisson's ratio structure steering tubular column.

The invention relates to a reactor core separation method for a molten metal cooling reactor. The method is implemented mainly by an inner reactor core, an outer reactor core, an upper gird plate inside the reactor core, an upper grid plate outside the reactor core, a lower grid plate inside the reactor core, a lower grid plate outside the reactor core, an inner reactor core coaming, an inner reactor core support column and inner reactor core guide columns, wherein a fuel component is fixed through clamping of the upper and lower grid plates. According to the reactor core separation method provided by the invention, the buoyancy of molten metal to the fuel component is utilized, a reactor core can be lifted through the buoyancy after constraint of the fuel component is released, and thus the purposes that the reactor core is separated and a reactor is closed are achieved. By adopting the method provided by the invention, a redundancy auxiliary system serving as a reactor control rod for stopping a reactor can be also independently used, and then the purpose of closing the reactor can be achieved.

The invention provides a cold pool flow channel capable of effectively improving the safety of a pool type lead-cooled fast reactor. The cold pool flow channel is realized by mainly depending on a cold pool secondary partition hole plate. The cold pool secondary partition hole plate comprises a horizontal section hole plate and a vertical section hole plate, and the thickness of the cold pool secondary partition hole plate is the same as that of a heat partition plate. Holes are formed in the horizontal section, so that retention of a lead cooling agent by the secondary partition hole plate can be avoided when a free liquid level drops. Open holes for adjusting the hole plate at the outlet position of the vertical section are circumferentially distributed, so that lead flows upwards uniformly, more lead in the cold pool takes part in whole flow, the thermal inertia safety advantage of the lead pool is exerted to a great extent, and the passive safety performance of the lead-cooled fastreactor is further improved. When a notch occurs in a heat exchange tube of a main heat exchanger, the new cold pool flow channel design enables the cold pool to have more time to perform gas liquidseparation, so that the quantity of water vapor which is entrained by the lead to enter the reactor core is reduced to a great extent and introduction of excessive positive reactivity is avoided. Thecold pool flow channel has one structure and multiple safety functions, simplifies the systematic design of the lead-cooled fast reactor, and can effectively improve the safety and the economic property of the lead-cooled fast reactor.

The invention relates to a passenger car driver protection structure. The passenger car driver protection structure comprises a driver seat sliding beam. A steering column bracket column is arranged on the driver seat sliding beam. The upper end of the steering column bracket column is provided with a steering column bracket connected to a steering column steering wheel. The driver seat sliding beam is provided with a driver seat fixing boss. A driver seat is mounted on the driver seat fixing boss. The driver seat sliding beam, the steering column bracket column, the steering column bracket and the driver seat fixing boss are welded into a whole. According to the technical scheme, a front wall frame is stressed to be deformed when the front portion of a passenger car is collided, and when the deformation is large enough to threaten the living space of a driver, the driver seat sliding beam, the steering column bracket column, the steering column bracket, the driver seat fixing boss, the steering column steering wheel and the driver seat are entirely separated from a chassis frame to ensure that the driver has enough living space, so that the passive safety of the passenger car is improved.

These days, typically strong holders for attachment of inboard devices to the primary structure of an aircraft are used, which often only ineffectively manage dynamic loads. According to an exemplary embodiment of the present invention, an energy absorber is provided for aircraft, which includes one or more energy absorber elements and a housing, whereby the energy absorber elements can absorb crash impulses by plastic deformation within the housing. Thus, the load on the primary structure is limited, which can lead to an increased, passive safety of the passengers and a weight reduction.

An energy absorber for aircraft, which includes one or more energy absorber elements and a housing, whereby the energy absorber elements can absorb crash impulses by plastic deformation within the housing. Thus, the load on the primary structure and the respective inboard devices is limited, which can lead to an increased, passive safety of the passengers and a weight reduction.

The invention relates to a front structure of a vehicle, essentially comprising a front foot (4), a wing lining (12), a wing support (6) connected to the wing lining, and a lateral reinforcement (8). The wing support (6) extends from the front foot (4) towards the front of the vehicle. It consists of a longitudinal structural element, with an attenuation area in a rear part. Said attenuation area is configured so as to generate a component vertical to the deformation thereof in the event of an impact with the vehicle, said component being however limited by the presence of the lateral reinforcement (8). Said controlled deformation of the front lateral elements of the vehicle limits the deformation of the elements constituting the structure, such as the front foot (4), and in this way facilitates the reparation of the vehicle and reduces the intrusion into the passenger compartment following a frontal impact.

The application discloses a braking system fault detection system and method. The brake system fault detection system is applied to a vehicle; the vehicle comprises a brake control component; and thebrake system fault detection system comprises a brake intention detection module used for detecting the state of the brake control component and generating a brake control component state signal basedon the state of the brake control component, a brake pressure detection module used for detecting the pressure of the brake system and generating a brake pressure signal based on the detected pressure of the brake system, a deceleration detection module used for detecting the braking deceleration of the vehicle and generating a braking deceleration signal based on the braking deceleration, and abrake failure detection module used for determining whether a brake system of the vehicle breaks down or not based on the brake control component state signal, the brake pressure signal and the brakedeceleration signal. Under the condition that the braking system breaks down, a braking system fault signal is generated.

The invention discloses a wheel, aiming at providing a technical scheme which can prevent vehicles from accidents due to lateral misalignment after vehicles have a flat tire, namely the tire burst subsidiary wheel. The key points of the technical scheme of the invention are that a subsidiary tire, a supporting steel ring, screws and a tire are installed on a wheel rim together, the circle of the tire crown of the subsidiary tire is bigger than the circle of the wheel rim but smaller than the circle of the tire crown of the tire and is fixed and welded by the supporting steel ring and the screws.

The invention relates to a heat shield block, in particular for lining a combustion chamber wall, having a hot side which can be subjected to a hot medium, a wall side opposite the hot side, and a peripheral side adjoining the hot side and the wall side. A tension element which can be prestressed to a prestress (Fz) is attached to the peripheral side, release of a fragment, formed during a fracture, of the heat shield block being reliably prevented by the prestress (Fz) of the tension element. The invention also relates to the use of a heat shield block, in particular for lining a combustion chamber wall of a gas turbine.

The invention discloses a collision dummy model design method reflecting muscle dynamic characteristics of a driver, aiming at solving the problems of incapability of reflecting real muscle dynamic mechanical characteristics during collision of the driver and low bio-simulation existing in the conventional collision dummy model. According to the method, a current general collision dummy model is used as a basic dummy model. The method comprises the following steps: 1, acquiring muscle signals, i.e., representing a collision scene to promote the driver to produce certain physiological reaction and realize acquisition of the muscle signals under different speeds; 2, designing the muscle dynamic characteristics of the dummy model, i.e., designing muscle static characteristics in the dummy model, obtaining a relation curve of the muscle signals based on speed change through regression analysis according to the muscle signals acquired in the step 1, and calculating the muscle dynamic characteristics of the driver at certain speed so as to design the muscle dynamic characteristics of the dummy model; 3, outputting collision parameters and assessing the bio-simulation of the dummy model.