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2693 results about "Car passenger" patented technology
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A passenger car (known as a coach or carriage in the UK, and also known as a bogie in India) is a piece of railway rolling stock that is designed to carry passengers. The term passenger car can also be associated with a sleeping car, baggage, dining, railway post office and prisoner transport cars.
Point cloud differential defect detection system and detection method based on multi-feature fusion
The invention discloses a point cloud differential defect detection system and detection method based on multi-feature fusion, which are mainly used for high-precision detection of surface defects of a side wallboard of a railway passenger car, and the method comprises the following steps: obtaining datum point cloud data through a designed standard side wallboard model of the railway passenger car, and collecting real-time point cloud data through a laser scanner; preprocessing the obtained point cloud data; calculating the difference between the real-time point cloud and the reference point cloud by adopting a difference method for fusing geometric features such as Euclidean distance, curvature and normal vector, namely calculating the Euclidean distance difference, curvature difference and normal vector difference between the reference point cloud and the real-time point cloud; and a comprehensive abnormal score is generated by further combining a dynamic weight fusion mechanism, and different region characteristics (such as a plane, a curved surface and an edge region) are adapted through dynamic threshold adjustment. According to the method, the defect region is segmented through the clustering algorithm, and the defect area and depth are quantified. The method has the advantages of high detection precision, strong adaptability and good real-time performance, and is suitable for complex surface defect detection in industrial production.
Owner:NANJING FORESTRY UNIV
Combined floor assembly and energy storage device, for an electrically driven passenger car
A combined floor assembly and energy storage device for an electrically driven passenger car includes a floor assembly on the lower face of which an energy storage device of an electric drive of the passenger car is arranged. A holding element, by which a rear end region of the energy storage device is held on the lower face of the floor assembly, and a rear cross-member, which is arranged on the lower face of the floor assembly and behind the energy storage device in the vehicle longitudinal direction are provided. In order to provide a combined floor assembly and energy storage device which offers especially rigid support for the rear cross-member even in a vehicle with a purely electric drive and in which, additionally, the energy storage device is fixed to the rear end on the lower face of the floor assembly in a particularly stable manner, the energy storage device is secured to the rear cross-member by way of the holding element.
Owner:BAYERISCHE MOTOREN WERKE AG
Computing method and device for axle load of whole vehicle, electronic equipment and storage medium
The invention provides a vehicle axle load calculation method and device, electronic equipment and a storage medium, and the method comprises the steps: responding to a vehicle axle load evaluation request initiated by a target user on a vehicle axle load evaluation interface; obtaining the number of seats in each row, the servicing mass, the wheelbase, the front axle load ratio in the servicing state and the position information of the target passenger vehicle input by the target user on the whole vehicle axle load evaluation interface; and calculating rear axle load data according to the servicing mass, the wheelbase, the front axle load ratio in the servicing state and the position information of the target passenger vehicle. Determining all load working conditions of the target passenger car according to the number of seats in each row of the target passenger car; and according to the curb mass, the rear axle load data, the number of passengers in each row of seats in each load working condition and the number of luggage, the whole vehicle load under each load working condition is calculated. Through the mode of the invention, the whole vehicle load under a plurality of load working conditions can be calculated.
Owner:CHINA FAW CO LTD
Intelligent energy-saving light fuzzy control method and system in passenger car compartment
PendingCN119317006Ameet comfortReduce energy consumptionElectrical apparatusEnergy saving control techniquesReal-time dataControl engineering
The invention provides an intelligent energy-saving light fuzzy control method and system in a passenger car compartment. The method comprises the steps that real-time data of external light intensity and the number of passengers in the compartment are collected; carrying out fuzzification processing on the collected data, outputting a fuzzy set, and converting the fuzzy set into an output signal of a compartment light brightness value; and executing the output signal instruction to adjust the light brightness value. According to the invention, the fuzzy method library is utilized to control the adjustment strategy of the compartment light brightness, accurate control of the light in the compartment is realized, the comfort level of passengers is satisfied, the energy consumption is effectively reduced, the intelligent level of the passenger car is improved, and more convenient, comfortable and environment-friendly travel experience is provided for the passengers.
Owner:CHERY & WANDA GUIZHOU BUS
Passenger car battery temperature control intelligent regulation and control method and system based on multi-source sensor data
The invention relates to the field of navigation signal processing, and discloses a passenger car battery temperature control intelligent regulation and control method and system based on multi-source sensor data, environment data and battery operation state data are acquired by constructing a multi-source sensing array, and fusion processing and feature extraction are performed on the acquired data by using an edge calculation method; analyzing and predicting the charging and discharging behaviors of the battery based on the extracted characteristic parameters, judging the charging and discharging states of the battery, dynamically optimizing the switching threshold value of the refrigerating or heating mode of the battery, switching the mode according to the optimized switching threshold value, and performing matching analysis on the photovoltaic power generation energy and the temperature control energy consumption, so as to determine the temperature control energy consumption of the battery. According to a matching analysis result, an exclusive temperature control matrix is generated through a geographic position and meteorological data, and time-sharing gradient control is performed by using an adaptive PID control algorithm in combination with instantaneous wave cloud characteristics of photovoltaic energy storage, so that customized temperature control strategies can be provided for different environmental conditions, temperature fluctuation is avoided, and the temperature control stability is improved.
Owner:无锡市宏宇汽车配件制造有限公司
Vehicle power system based on solid hydrogen pool, passenger vehicle and control method
The invention relates to the technical field of energy power, in particular to a vehicle power system based on a solid hydrogen pool, a passenger vehicle and a control method. The vehicle power system comprises a power driving module, a fuel cell module, a solid hydrogen pool module, a heat dissipation module and a whole vehicle control module. The fuel cell module comprises a cell stack unit, a hydrogen feeding and discharging unit, an air feeding and discharging unit and a tail discharging unit, and the cell stack unit is electrically connected with the power driving module. The solid hydrogen pool module comprises a solid hydrogen storage unit, a water supply unit and a hydrogen release buffer unit. The heat dissipation module is in butt joint with the cell stack unit and the solid hydrogen storage unit, and the whole vehicle control module is in communication connection with the power driving module, the fuel cell module and the solid hydrogen pool module. The passenger vehicle comprises a vehicle power system. The fuel cell module based on the solid hydrogen pool module is used for stably supplying power to the power driving module, so that power is provided for the passenger car, and the endurance requirement of the passenger car is met.
Owner:SHAANXI LINGDING ZHONGSHAN TECHNOLOGY CO LTD
Rigidity adjusting valve for multi-cavity air spring for passenger car
The invention belongs to the technical field of vehicle control, and particularly relates to a stiffness regulating valve for a multi-cavity air spring for a passenger car, comprising a communicating air passage, one end of the communicating air passage is used for communicating with the air spring, the side wall of the communicating air passage is provided with an air port, and the joint of the communicating air passage and the air spring is provided with a first sealing part; the rigidity valve shell is fixedly connected to the other end of the communicating air channel, the communicating air channel and the rigidity valve shell are provided with second sealing parts, and the air port is located on the outer side of the rigidity valve shell; the piston is used for controlling the opening degree of the air port, the piston is arranged in the communicating air channel in a sliding mode, and a third sealing part is arranged between the communicating air channel and the piston; the sliding driving part is used for driving the piston to slide in the communicating air channel; the output end of the speed reduction part is in transmission connection with the sliding driving part; the input end of the driving part is in transmission connection with the input end of the speed reduction part. When the air spring is used, the opening degree of the air port is controlled by driving the piston to move in the communicating air channel, and then the rigidity of the air spring is adjusted.
Owner:SUZHOU CAR TECHNOLOGY INTELLIGENT CONTROL TECHNOLOGY CO LTD
Closure mechanism for a fuel tank recess of a motor vehicle
Such a closure arrangement with a cover part that covers the tank recess flush with an edge of the tank recess in a closed position and releases it in an open position, with a guide structure arranged in the area of the tank recess in a vehicle-mounted state in the ready-to-use state, which forms a positive guide for the cover part between the closed position and the open position such that the cover part, starting from a closed position, performs a parallel displacement relative to the edge of the tank recess out of the flush position and then moves away from the tank recess, as well as with a drive system that is connected to the cover part and has a gear drive, is known. According to the invention, the guide structure has a linear guide section for moving the lid part from the closed position inwards towards the center of the vehicle and a subsequent circular arc section to then pivot the lid part away from the tank recess in order to move the lid part inwards. Use in passenger cars
Owner:BOS GMBH & CO KG
Intelligent networked passenger car network system architecture design method based on link redundancy
The invention discloses an intelligent networked passenger car network system architecture design method based on link redundancy, which comprises the following steps of: constructing a CAN (Controller Area Network) line network module and a vehicle-mounted Ethernet module, and connecting a plurality of control nodes in a passenger car to obtain a connection link; judging connection link connectivity and transmission quality of the plurality of control nodes by utilizing a heartbeat packet mechanism to obtain link quality; and carrying out link switching according to the link quality to obtain the network system architecture of the intelligent networked passenger car. The invention relates to the technical field of intelligent traffic, and solves the technical problems of low error-tolerant rate, insufficient reliability and easy threat to driving safety of the existing single-chain design or double-chain design during link fault.
Owner:ANHUI ANKAI AUTOMOBILE
High-elongation and high-forming steel for passenger car and production method of high-elongation and high-forming steel
The invention belongs to the field of metal materials, and particularly relates to high-elongation and high-forming passenger car steel and a production method thereof.The steel plate is mainly suitable for manufacturing passenger car structural parts, the steel comprises the following chemical components of C, Si, Mn, Al, V, Ta, Bi, Sb, Ni, Pt and Y, P is limited to be smaller than or equal to 0.015%, S is limited to be smaller than or equal to 0.005%, N is limited to be smaller than or equal to 0.006%, and the balance Fe and inevitable impurities. The steel plate is obtained by adopting hot rolling, EPS, continuous annealing and finishing processes, the processes of pickling and cold rolling are reduced, the production process is simplified, the production cost is reduced, and the environment is not polluted.
Owner:ANGANG STEEL CO LTD
High-formability passenger car steel and production method thereof
The invention belongs to the field of metal materials, and particularly relates to high-formability steel for a passenger car and a production method of the high-formability steel, the steel plate is mainly suitable for manufacturing passenger car structural parts, the steel comprises the following chemical components: C, Si, Mn, Al, Ti, Ta, Bi, Sb, Ni, Pt and Y, P is limited to be less than or equal to 0.015%, S is limited to be less than or equal to 0.005%, N is limited to be less than or equal to 0.003%, and the balance is Fe and inevitable impurities. The steel plate is obtained by adopting hot rolling, EPS, continuous annealing and finishing processes, the processes of acid pickling and cold rolling are reduced, the production process is simplified, and the environment is not polluted.
Owner:ANGANG STEEL CO LTD
Rail transit passenger car seat backrest sand bag swing impact test device
PendingCN119197969ASolve the inconvenience of adjustmentincrease diversityShock testingCar passengerControl theory
The invention provides a swing impact test device for a sand bag of a seat backrest of a rail transit passenger car. The swing impact test device comprises a test bed, a support frame, a lifting assembly, a support cross beam and a swing impact assembly, the test bed is used for installing a seat, the lifting assembly is arranged on the supporting frame, the supporting cross beam and the supporting frame are arranged in a sliding mode, and the lifting assembly drives the supporting cross beam to move in a lifting mode; the swing impact assembly comprises a connecting beam, a swing arm, a pendulum bob, a pull rope and a pull driving source. The connecting beam is connected with the supporting cross beam, the swing arm is hinged to the connecting beam, the pendulum bob is connected with one end of the swing arm, and the pull rope is connected with the other end of the swing arm. And the pull driving source pulls the pull rope, so that the pendulum bob impacts the backrest of the seat. According to the invention, impact tests can be conveniently carried out on different heights of the seat backrest.
Owner:上海玛曲检测技术有限公司
Passenger and freight co-transportation method of shared automobile based on vehicle-mounted freight unmanned aerial vehicle technology
ActiveCN119990940AData processing applicationsInternal combustion piston enginesLogistics managementIn vehicle
The invention relates to a shared automobile passenger and freight co-transport method based on a vehicle-mounted freight unmanned aerial vehicle technology, the method combines an unmanned aerial vehicle and a shared automobile to carry out passenger and freight co-transport, the unmanned aerial vehicle is used for processing delivery time-sensitive lightweight packages, and the shared automobile assists the unmanned aerial vehicle in completing a package distribution task while completing passenger transport. Comprising the following steps: constructing an unmanned aerial vehicle-shared automobile passenger and freight co-transport path optimization objective function and constraint according to an unmanned aerial vehicle-shared automobile passenger and freight co-transport mode, and selecting a decision variable; and carrying out shared automobile path planning based on the target function and the constraint, and generating an unmanned aerial vehicle-shared automobile passenger and freight co-transportation scheme according to a path planning result. Compared with the prior art, the invention provides a logistics form of shared automobile-unmanned aerial vehicle passenger and freight co-transportation, and realizes freight network flow expansion cost minimization on the premise of ensuring passenger transportation service efficiency and level.
Owner:TONGJI UNIV
New energy light bus electronic control hydraulic braking optimization method
The invention provides an electronic control hydraulic braking optimization method for a new energy light passenger car, which comprises the following steps of: monitoring the position of a brake pedal through a high-precision sensor, correcting a signal in combination with vehicle speed and load information, identifying the braking intention of a driver, calculating the required braking force, and recovering energy by braking through a motor. The regenerative braking power is dynamically adjusted according to the braking force requirement, smooth transition to hydraulic braking is achieved when necessary, the braking response time is shortened through the rapid pressure building technology and optimization design, the braking distance is reduced, and the braking strategy is intelligently adjusted according to different road conditions, for example, motor braking is reduced on a wet and slippery road surface to avoid slipping; and motor braking is added on the long downhill road section to reduce the risk of heat attenuation, and the dual purposes of improving the braking performance and efficiently utilizing energy are achieved.
Owner:JIANGXI JIANGLING GRP JINGMA AUTOMOBILE LTD CO
High-strength passenger car steel and production method thereof
The invention belongs to the field of metal materials, and particularly relates to high-strength passenger car steel and a production method thereof.The steel plate is mainly suitable for manufacturing passenger car structural parts, the steel comprises the chemical components of C, Si, Mn, Al, Nb, V, Ta, Bi, Sb, Ni, Cr, Pt and Y, P is limited to be smaller than or equal to 0.015%, S is limited to be smaller than or equal to 0.005%, N is limited to be smaller than or equal to 0.006%, and the balance Fe and inevitable impurities. The steel plate is obtained by adopting hot rolling, EPS, continuous annealing and finishing processes, the processes of pickling and cold rolling are reduced, the production process is simplified, the production cost is reduced, and the environment is not polluted.
Owner:ANGANG STEEL CO LTD
Passenger car electric steering gear rack and pinion clearance measurement adjusting mechanism
InactiveCN119244732AGuaranteed accuracyensure accuracy andUsing optical meansVehicle steering/rolling behaviourGear wheelControl cell
The invention discloses a passenger car electric steering gear rack and gear clearance measurement adjusting mechanism, which comprises a back plate, a telescopic mechanism, an inner displacement detection probe, an outer displacement detection probe, a tightening mechanism and a control unit, and is characterized in that the telescopic mechanism is mounted on the side surface of the back plate, a rotating mechanism is arranged on the side surface of the tightening mechanism, and the telescopic mechanism drives the rotating mechanism to move; according to the invention, dynamic loading and dynamic unloading between the gear and the rack in actual use of the steering gear and the temperature change condition in the steering gear are simulated, so that the gear and the rack with gaps are prevented from deviating in the mounting position under the influence of external factors, and the stability of the gear and the rack is improved. Therefore, the detection precision of the inner displacement detection probe and the outer displacement detection probe is effectively improved, and the accuracy of calculating the gap between the gear and the rack can be further improved.
Owner:SHANGHAI LANCHENG AUTOMATION SYST CO LTD
Automatic shunting route handling method and equipment suitable for passenger and freight mixed running station
PendingCN119078925AImprove efficiencyReduce manual operation timeAutomatic systemsCar passengerTruck
The invention relates to a shunting route automatic handling method and equipment suitable for a passenger and freight mixed running station. The method comprises the steps that S101, a CTC system signs for a shunting operation list; s102, automatic handling of shunting operation is started; s103, the shunting terminal requests shunting route handling; s104, the CTC system checks whether space-time conflicts exist between the applied shunting route and passenger car and freight car train routes planned to be handled in the stage plan, station yard trains and shunting routes handled in the station yard, and interval occupation; s105, the CTC system automatically transacts the shunting route passing the inspection; and S106, the shunting machine runs to a station track or a turning point along the shunting route with the open signal, and the shunting terminal completes the relevant operation of the shunting machine. Compared with the prior art, the system has the advantages of being high in automation degree, improving shunting efficiency and the like.
Owner:CASCO SIGNAL LTD
Passenger car body framework assembly tool and method
InactiveCN119703554AWelding/cutting auxillary devicesAuxillary welding devicesCar passengerControl theory
The invention relates to the technical field of passenger car body framework assembly, and discloses a passenger car body framework assembly tool and method, a mould is provided with a plurality of positioning blocks, the positioning blocks are used for positioning a car body framework, one side of each positioning block is provided with an electromagnetic attraction structure, and the mould fixes the position of the car body framework through the positioning blocks and the electromagnetic attraction structures; the jig frame serves as a jig supporting frame, the jig is fixed to the jig frame, a plurality of jacking structures are arranged on the jig frame, setting point positions of the jacking structures are correspondingly located at key stress point positions of the vehicle body framework, after the vehicle body framework is installed and welded, the electromagnetic attraction structure is powered off, the framework is jacked up through the jacking structures, and demolding is completed; by adopting the mode of combining adsorption fixation of the electromagnetic adsorption structure and multi-point ejection of the jacking structure, rapid positioning during assembly of the vehicle body framework and rapid ejection demolding after assembly are achieved, the problems that a traditional clamp is inaccurate in positioning, the framework deforms and the like when a large framework is assembled are solved, and the assembly efficiency and precision are greatly improved.
Owner:ZHONGTONG BUS HLDG
High-speed intelligent management and control method and system special for passenger car based on road safety
ActiveCN119479310AInternal combustion piston enginesDetection of traffic movementNerve networkSimulation
The embodiment of the invention discloses a passenger car special-purpose high-speed intelligent management and control method and system based on road safety, and belongs to the technical field of intelligent traffic. According to the vehicle-road space-time diagram neural network processing in the embodiment of the invention, the vehicle-mounted sensing monitoring state vector is obtained, multi-source vehicle data can be integrated, and the vehicle state can be comprehensively reflected. The spatio-temporal trajectory trend mining accurately encodes behaviors of the vehicle under different spatio-temporal conditions, and considers a multi-feature dimension collaborative trend, so that the vehicle behavior description is more accurate. The inter-class attention strategy focuses on the feature dimension relation in spatial-temporal trajectory deduction, adapts to various traffic scenes, and improves the trajectory deduction accuracy. Traffic flow scheduling decision processing integrates various factors including vehicle tracks and road network conditions, and decision reasonability is improved. According to intelligent control of potential congestion and code updating based on dynamic adjustment, congestion can be effectively avoided, the operation efficiency and safety of the highway network can be improved, and the method can also cooperate with other traffic management systems to optimize overall traffic resource configuration.
Owner:GUIZHOU RADIO & TV UNIV +2
Attention-enhanced dual-path network-based railway carriage axle box cover bolt fault detection method
PendingCN119474967Aeasy to identifyImprove detection accuracyInternal combustion piston enginesBiological modelsPattern recognitionEngineering
The invention discloses a passenger train axle box cover bolt fault detection method based on an attention-enhanced double-path network, and belongs to the technical field of passenger train fault detection. The method aims at solving the problem that axle box cover bolts are not easy to accurately recognize in a dense and complex background environment. Comprising the steps of constructing a dual-path neural network model, and obtaining axle box cover macroscopic geometric features by adopting a global feature path; using a local detail feature path to obtain an enhanced image microscopic feature; performing attention fusion by adopting a feature fusion module to obtain a fused feature image, and obtaining an axle box cover type, axle box cover direction and bolt state preliminary identification result; and in combination with the predefined mask matrix, transforming the predefined mask matrix to a to-be-identified image axle box cover space by adopting a spatial attitude matching algorithm to carry out spatial matching alignment, and determining a final state of the bolt through intersection operation of the predefined mask matrix and a bolt state preliminary identification result label output by the trained dual-path neural network model. The method is used for bolt fault detection.
Owner:HARBIN KEJIA GENERAL MECHANICAL & ELECTRICAL CO LTD
556 MPa grade hot-rolled steel plate for passenger car framework and production method of 556 MPa grade hot-rolled steel plate
ActiveCN120366653ATemperature control deviceHeat treatment process controlChemical compositionCar passenger
The steel comprises the following chemical components in percentage by weight: 0.062 to 0.092 percent of C, 0.10 to 0.35 percent of Si, 1.53 to 1.87 percent of Mn, 0.18 to 0.34 percent of Al, 0.035 to 0.055 percent of V, 0.062 to 0.076 percent of Ti, 0.25 to 0.45 percent of Mo, 0.021 to 0.035 percent of W, 0.022 to 0.068 percent of Bi, 0.050 to 0.110 percent of Sb, 0.012 to 0.020 percent of Y, 0.0031 to 0.0042 percent of Ca, 0.1153 to 0.1174 percent of Mg, 0.30 to 0.60 percent of Al + Si, 1.2 to 2.0 percent of C / V, 0.1190 to 0.1211 percent of Ca + Mg, less than or equal to 0.010 percent of P, less than or equal to 0.005 percent of S, less than or equal to 0.006 percent of N and the The yield strength of the steel plate ranges from 556 MPa to 618 MPa, the tensile strength ranges from 660 MPa to 735 MPa, the transverse elongation A is larger than or equal to 26%, the hole expansion rate ranges from 70% to 85%, transverse cold bending is conducted by 180 degrees, D = a, and the steel plate is qualified. The steel plate has excellent mechanical performance and high forming performance.
Owner:ANGANG STEEL CO LTD
Passenger car part fault detection method and system based on visual prompt and visual large model
The invention discloses a passenger car component fault detection method and system based on visual prompt and a visual large model, and the method comprises the steps: carrying out the position marking of a target in each sample image for each type of component sample image set, splicing a panoramic image, and generating a mask image; describing the exception type of each type of part and the details of each exception type through the exception description text; extracting multi-scale image features of the panoramic image and the mask image, and fusing the multi-scale image features to obtain visual prompt features; extracting a multi-scale image feature of the to-be-detected part image, fusing the multi-scale image feature with the visual prompt feature to obtain a multi-scale image feature of the to-be-detected part, inputting the multi-scale image feature into the part positioning model, and positioning a target part image; and fusing the visual features of the target part image with the text features of the corresponding abnormal description text by using a visual large model, and predicting and outputting a fault detection result. According to the invention, precise part positioning and fault detection can be realized.
Owner:CENT SOUTH UNIV +1
Roof for a motor vehicle having a sensor system for detecting a vehicle environment
A roof for a motor vehicle, in particular for a passenger car, having a roof skin which is disposed above a roof substructure and having a sensor system which has at least one sensor module having at least one environment sensor for detecting a vehicle environment. The roof has a cooling device for the sensor module, said cooling device having a compressed-air device by which compressed air is applied to the sensor module.
Owner:WEBASTO AG
Passenger car carbon emission monitoring, regulating and controlling system and method based on multi-source spatio-temporal data
The invention relates to the technical field of intelligent traffic and carbon treatment, in particular to a passenger car carbon emission monitoring and regulation system and method based on multi-source spatio-temporal data. According to the method, the multi-source spatio-temporal data is preprocessed and uniformly mapped, so that the problem of data scattering and irregularity is solved. And a vehicle-space unit-time period three-dimensional carbon emission calculation model is constructed, and accurate calculation of carbon emission of single-vehicle single-trip and high-carbon emission hot spot positioning are realized. And finishing differentiated division of the user groups by adopting a clustering algorithm. A dynamic early warning threshold value is generated based on an early warning threshold value prediction model, a regional carbon emission target and historical data, and false alarm and missing alarm are reduced. An early warning type-policy tool-adaptive object mapping rule base is established, the regulation and control strategy is generated in combination with early warning signals and real-time data, and automatic and accurate generation from problem recognition to the regulation and control strategy is achieved. Policy execution effect data is utilized to optimize model parameters, early warning threshold values and mapping rules, monitoring, early warning, regulation and control are formed, closed-loop management is optimized, and precise regulation and control are achieved.
Owner:BEIJING ELECTRIC VEHICLE
Multi-sensor fusion rail transit electric passenger car bogie dynamic performance monitoring method
The invention relates to the technical field of rail transit monitoring, and discloses a multi-sensor fusion rail transit electric passenger car bogie dynamic performance monitoring method. The method comprises the steps that multi-source heterogeneous sensing data such as bogie vibration acceleration time sequence signals, wheel-rail contact force distribution data, bearing temperature gradient data and structural strain field data are collected; analyzing the vibration signal to extract a frequency band energy feature vector, performing spatial gridding mapping on the contact force data to generate a distribution matrix, and performing time-space alignment fusion on the two to form a primary fusion feature set; positioning a bearing temperature anomaly region through a deep convolutional network, and generating a secondary fusion feature set in combination with a structural strain concentration coefficient; and inputting the two-stage feature set into a dynamic performance evaluation model, outputting a performance degradation index set of scores of axle box bearing wear degree, framework fatigue cumulant, wheel set tread damage and the like, generating a maintenance priority sequence and triggering a preventive maintenance instruction according to the performance degradation index set, and realizing accurate monitoring and efficient operation and maintenance management and control of the dynamic performance of the bogie.
Owner:NINGBO CRRC ZHIWEI TECHNOLOGY CO LTD
Passenger car active opening and closing hubcap device based on flexible cable structure
The invention is suitable for the technical field of automobile aerodynamics, and provides a passenger car active opening and closing hubcap device based on a flexible cable structure, the passenger car active opening and closing hubcap device comprises a bottom plate and a cover plate, a plurality of bottom plate through holes are annularly formed in the bottom plate, and cover plate through holes are annularly formed in the corresponding positions of the cover plate; a plurality of sliding baffles are annularly mounted on the inner side of the bottom plate; the control module comprises a reel, a driving module used for driving the reel to rotate is further arranged in the driving bin, a plurality of flexible cables are wound on the reel, the number of the flexible cables is the same as that of the sliding baffles, one end of each flexible cable is fixed in a rope tying opening formed in the reel, and the other end of each flexible cable is fixed in a rope tying opening formed in the reel. The free end of each flexible cable penetrates through a cable outlet formed in the bottom plate driving bin and is fixed in a baffle cable tying hole in the sliding baffle. The device is compact and stable in structure, high in mechanism reliability, stable in structure of the driving module and the control module, high in space utilization rate and low in manufacturing cost.
Owner:JILIN UNIVERSITY
Energy-store floor assembly for an electrically drivable passenger car
An energy-store floor assembly for an electrically drivable passenger car, the energy-store floor assembly having a floor assembly, on the bottom side of which an energy storage device of an electric drive of the passenger car is fixed. Lateral side receptacles, in the region of which a separate fastening point is located to which the energy storage device can be fastened, are positioned on the floor assembly. A modular system for manufacturing such an energy-store floor assembly is provided.
Owner:BAYERISCHE MOTOREN WERKE AG
1430MPa-grade passenger car steel and production method thereof
The invention belongs to the field of metal materials, and particularly relates to 1430MPa-grade steel for passenger cars and a production method of the 1430MPa-grade steel, and the steel plate is mainly suitable for manufacturing passenger car structural parts. The steel comprises the following chemical components: C, Si, Mn, Al, Nb, V, Ta, Bi, Sb, W, Cr, Pt, Zr and Y, Al / Si is 1.0-2.0%, Ta + Zr is 0.040-0.048%, P is limited to be less than or equal to 0.015%, S is limited to be less than or equal to 0.005%, N is limited to be less than or equal to 0.006%, and the balance is Fe and inevitable impurities. The steel plate is obtained through the hot rolling, EPS, continuous annealing and finishing processes, the pickling and cold rolling processes are omitted, the technological process is simplified, and the environment is not polluted.
Owner:ANGANG STEEL CO LTD
Wheel fixing device for loading and transporting passenger car
Owner:ZHEJIANG TOPSUN LOGISTIC CONTROL CO LTD
Passenger car battery low-temperature heating test system, method, device, equipment and medium
The invention provides a passenger car battery low-temperature heating test system, method, device and equipment and a medium, and the system comprises a passenger car battery low-temperature heating test system which is composed of a whole car domain controller, a control assembly and a BMS battery management subsystem, and the method comprises the steps: carrying out the whole car power-on of a target passenger car according to a passenger car test request for the low-temperature rapid heating of a battery; the battery temperature and the vehicle running state of the target passenger car are obtained, the battery temperature is judged based on the temperature interval, and at least one judgment node of heating needing and heating not needing is obtained; when the judgment result is that heating is needed, determining a heating gear and a target temperature according to the temperature interval of the battery temperature; and heating the target battery to the target temperature according to the heating gear. The device has the beneficial effects that the power battery of the vehicle can be rapidly heated in an extremely low temperature environment, and the self-heating test of the test battery is realized.
Owner:HUNAN CSR TIMES ELECTRIC VEHICLE