888 results about "Wheelbase" patented technology

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.

The invention discloses a fusion preview PID transverse control method and system for port and mine automatic driving, and belongs to the technical field of automatic driving, and the method specifically comprises the steps: obtaining a reference trajectory point and vehicle pose data, and calculating a nearest point of a vehicle relative to a reference trajectory and the curvature of the nearest point; switching a straight line control mode and a turning control mode through a dynamic smooth transition factor; calculating a preview distance according to the curvature, the vehicle speed and the wheelbase, and obtaining the pose of the preview point; transverse and course errors are calculated, and PID control is carried out to obtain feedback output; combining feedforward control output, and obtaining a final steering control command according to weight fusion; and vehicle pose and track changes are monitored in real time, and adjustment and control are performed. According to the method, stable automatic driving control of the vehicle under different road conditions is realized, and the driving safety and comfort are improved.

A spread axle assembly for a trailer has the ability to pivot about itself to achieve a storage configuration that advantageously shortens the overall length of the trailer and reduces tire wear. It also has the ability to extend between a close position in which the rear axle of the trail is proximate to its axle and one or more spread or extended positions for better distribution of a load carried by the trailer.

Trailer detection is provided. A vehicle can determine a distance to a portion of the trailer from the time-of-flight sensor data. The vehicle can determine a doppler shift indicative of a speed of a wheel of a wheel assembly from the data. The vehicle can determine, based on the distance and the doppler shift, a wheelbase of the trailer.

The present invention discloses an intelligent electric suitcase, the length+width+height of which is ≤1250mm, and the intelligent electric suitcase comprises a box body for users to ride on, two power wheels installed on the box body, and a control system for respectively controlling the rotation of the two power wheels; the two power wheels are arranged on the box body in parallel on the left and right, and the wheelbase of the two power wheels is 175-245mm. The present invention is suitable for boarding an intelligent electric suitcase equipped with two power wheels, and the boarder can ride on the intelligent electric suitcase. The gravity of the boarder is evenly distributed on the two power wheels, so that any power wheel can avoid slipping with the ground, which is conducive to the steering of the intelligent electric suitcase; the sum of the three sides of the intelligent electric suitcase does not exceed 125cm, and the boarder can carry the intelligent electric suitcase to the passenger cabin of the aircraft.

The embodiment of the invention discloses a reversing image generation method and device, electronic equipment and a medium. The method comprises the steps that if it is detected that the gear state of a vehicle is in a reverse gear state, an electronic rearview mirror image and a reversing image of the vehicle are obtained; performing fusion processing on the electronic rearview mirror image and the reversing image to obtain fused image information; state information of the vehicle and size parameters of the vehicle are obtained, the size parameters comprise the wheelbase and the vehicle body size of the vehicle, and a reversing movement track of the vehicle is generated based on the state information, the wheelbase and the vehicle body size; and combining the reversing motion track with the fused image information to obtain a reversing image of the vehicle. According to the embodiment of the invention, the blind areas can be obviously reduced or eliminated, the decision-making ability and safety of a driver can be greatly improved, and the use experience of a user is improved.

The invention provides a loading safety monitoring method and system for a rear-loading vehicle and the vehicle. The method comprises the following steps that the arc height variable quantity of a plate spring of the vehicle in the current loading state is collected; based on the arc height variable quantity, a vehicle total weight estimated value is obtained through calculation; based on the axle load estimation values of the front axle and the rear axle and the axle distance of the vehicle, estimating the current gravity center height of the vehicle, and dynamically compensating the gravity center height according to the dynamic state parameters; and calculating a stability risk coefficient of the vehicle according to the total weight estimated value of the vehicle and the compensated gravity center height so as to carry out early warning. Displacement sensors are arranged on a front plate spring and a rear plate spring of a vehicle to collect arc height variation in real time, an axle load and a vehicle total weight estimated value are calculated based on a pre-calibrated plate spring rigidity coefficient, the gravity center height of the vehicle is estimated to evaluate the stability of the vehicle, and meanwhile the gravity center height is dynamically compensated based on dynamic parameters in the driving process. The evaluation precision under complex working conditions is improved, and the transportation safety is guaranteed.

The invention provides a double-lamp projection self-adaptive correction method and system based on suspension height adjustment, and belongs to the technical field of intelligent automobile illumination control. Comprising the steps that the real-time height difference between a front suspension and a rear suspension of a vehicle is calculated; calculating the angle difference of the vehicle suspension based on the real-time height difference and the vehicle wheelbase; calculating a vehicle lamp projection downward inclination angle after the vehicle body height is changed based on the angle difference and the vehicle lamp module parameters; correcting the vehicle lamp height according to the updated vehicle lamp projection downward inclination angle; according to the corrected height of the vehicle lamp, updating the initial projection distance of the vehicle lamp, and calculating the projection width of a single lamp; according to the single lamp projection width and the distance between the left and right vehicle lamps, calculating the number of pixel points in a vehicle lamp projection overlapping area; calculating the number of offset pixel points according to the number of pixel points in the vehicle lamp projection overlapping area and the vehicle lamp module parameters; and controlling the projection state of the pixel points in the vehicle lamp module based on the offset pixel point number. And under the condition of different suspension heights, the projection of the double lamps can keep consistent light and shadow effects.

This invention is applicable to the field of vehicle stability control technology and provides a coordinated stability control method and system for distributed, drive-by-wire vehicles. The method comprises the following steps: constructing a vehicle dynamics model; collecting vehicle state information based on a state recognition layer and a driving intention recognition layer, calculating and correcting the ideal yaw rate and ideal center-of-mass sideslip angle; allocating control variable weights using a KDPC algorithm; calculating the values ​​of the vehicle's control variables, namely, the rear wheel angle and the additional yaw moment; and allocating wheel drive torque based on the vehicle force, the additional yaw moment, the ratio of front and rear axle loads, the wheel radius, and the wheelbase. Through its electronic and dynamic control strategy, the invention achieves multi-dimensional advantages in flexibility, stability, energy efficiency, and intelligence, extending the vehicle chassis' extreme performance and vehicle handling stability.

An electric vehicle (e.g., a tricycle, or a car) includes a frame portion having a first side and a second side. A first rear wheel is disposed rearward relative to the frame portion at the first side. A second rear wheel is disposed rearward relative to the frame portion at the second side, the second rear wheel being spaced from the first rear wheel with a wheel base width therebetween (e.g., in a range from 260 mm to 900 mm). A first swing arm is pivotably coupled to the frame portion at the first side and operably coupled to the first rear wheel and extending between the frame portion and the first rear wheel. A second swing arm pivotably coupled to the frame portion at the second side and operably coupled to the second rear wheel and extending between the frame portion and the second rear wheel.

The invention relates to the technical field of electric digital data processing, in particular to a shock absorber data processing method and system based on digital twinning, and the method comprises the steps: obtaining a multi-channel data signal of a shock absorber, and constructing a panoramic vibration data tensor; extracting a discrete digital sequence on a panoramic vibration data tensor time dimension, executing a variational mode decomposition algorithm, and separating and extracting a transient impact feature vector flow; constructing a double-time-axis sliding mapping window, and mapping the transient impact feature vector flow to a future node of a prediction response time axis based on a front and rear wheel preview mechanism of a vehicle wheelbase; operating the time sequence recurrent neural network model, and predicting and generating a target state data matrix of future nodes; and in the numerical constraint space, a prediction type damping adjustment instruction data packet is solved and generated through a rolling optimization algorithm. Through prospective state prediction and optimization solution, the problem of data timeliness caused by calculation delay in digital twinning is solved, and real-time, predictive and safe adjustment of the shock absorber is realized.

An automobile hub intelligent detection device disclosed by the present invention comprises a base station used for supporting a hub and a U-shaped installation frame arranged on the base station and used for fixing a plurality of groups of infrared distance measurement sensors, the infrared distance measurement sensors are electrically connected with a terminal module, and the base station is provided with a ring shaft structure for driving the infrared distance measurement sensors to detect the depth of the hub. The annular shaft structure comprises a center shaft which rotates on the base table in a fixed-axis mode, a plurality of sets of arc-shaped abutting bases which are arranged in an annular array mode and used for abutting against the inner circumferential face of the hub are arranged on the shaft injection base, and a sizing assembly which drives the arc-shaped abutting bases to synchronously move in the same direction or in the opposite directions is arranged on the base table. The wheel hub depth detection device is provided with a plurality of groups of infrared distance measuring sensors, comprehensive depth detection can be carried out on the wheel hub from different positions, the multi-azimuth measurement mode ensures that the depths of different positions of the same wheel base of the wheel hub are accurately evaluated, and the detection comprehensiveness and reliability are remarkably improved.

The invention discloses a vehicle kinetic parameter identification method based on constrained nonlinear optimization, which comprises the following steps: establishing a vehicle two-degree-of-freedom transverse kinetic model based on a small-slip-angle tire and a road cross slope, acquiring a vehicle historical driving data measurement value, acquiring a to-be-estimated vehicle kinetic parameter, and identifying the to-be-estimated vehicle kinetic parameter according to the to-be-estimated vehicle kinetic parameter. Constructing a constrained nonlinear optimization problem about the yaw velocity, solving to obtain an estimated value sequence of the kinetic parameters of the vehicle, carrying out statistics on the sequence, and taking a statistical median as a final estimated value; on one hand, a vehicle transverse dynamics model including a road cross slope is adopted; on the other hand, the constraint of vehicle parameters is considered, a nonlinear optimization problem is constructed, and the vehicle front axle distance (the longitudinal distance from a front axle to the vehicle mass center), the vehicle rear axle distance (the longitudinal distance from a rear axle to the vehicle mass center), the front wheel cornering stiffness, the rear wheel cornering stiffness and the vehicle total mass are identified at the same time.

The invention discloses a drive-by-wire chassis and a vehicle, the drive-by-wire chassis comprises a chassis body, the chassis body comprises a front longitudinal beam, a middle frame and a rear longitudinal beam, and the middle frame is detachably connected with the front longitudinal beam and the rear longitudinal beam; the first driving module is arranged on the chassis body and is used for carrying out vehicle front-drive control; the second driving module is arranged on the chassis body and used for vehicle rear drive control; the CTC battery module is arranged on the chassis body and is used for providing a working power supply for the first driving module and the second driving module; and the chassis domain controller is arranged on the chassis body and used for controlling the vehicle through the first driving module and the second driving module. Therefore, through the middle frame, the front longitudinal beam and the rear longitudinal beam which are detachably connected, flexible adjustment of the wheel track, the wheel base and the ground clearance is achieved, so that the drive-by-wire chassis is rapidly matched with different vehicle types, the drive-by-wire chassis is decoupled from the vehicle body, independent development is facilitated, the development and verification period is shortened, and the development cost is reduced.

The utility model relates to the technical field of automobiles, in particular to an adjustable steering tie rod which comprises a pipe clamp, the pipe clamp is locked and matched with a nut through a bolt, the pipe clamp is connected with a tie rod body in a matched mode, and the tie rod body comprises a rod body, a first connecting rod and a second connecting rod. The pipe clamp, the bolt and the nut are all installed outside the first connecting rod and the second connecting rod, and the first connecting rod and the second connecting rod are both rotationally connected with a ball hinge joint assembly through threads. The whole device is simple in design and easy to operate, through the arrangement of the two spherical hinge joint assemblies with the opposite thread screwing directions, the effect length of the steering tie rod can be adjusted only by screwing the tie rod body on the premise that the steering tie rod does not need to be assembled and disassembled, and the steering tie rod is convenient to assemble and disassemble. Therefore, the accurate requirements of users on the action length of the tie rod under different axle distances are met; and the scale area is arranged, and the tail end of the ball joint assembly is used as a scale pointer, so that the visual adjustment of the action length of the steering tie rod is realized.

The invention provides a plate drawing system control method and device for simulating an ice surface system, and the method comprises the steps: determining the first real-time vehicle speed of a target vehicle based on an induction speed measurement unit, and determining the wheelbase between the center point of a front wheel and the center point of a rear wheel of the target vehicle based on a pressure sensor; based on the axle distance between the front wheel center point and the rear wheel center point of the target vehicle and the length of a pulling plate in the pulling plate system in the driving direction of the target vehicle, determining a time point when the front wheel of the target vehicle is not on the pulling plate and the rear wheel of the target vehicle is on the pulling plate, and taking the time point as a pulling plate starting time point; therefore, when the first real-time vehicle speed of the target vehicle is within the preset range, the pulling plate moving instruction is sent at the pulling plate starting time point, so that the pulling plate system controls the pulling plate to transversely move based on the pulling plate moving instruction, transverse traction force can be accurately applied to rear wheels of the target vehicle, and the dynamic performance of the vehicle under the wet and slippery road surface condition can be more truly reproduced.

The invention discloses a method and system for calculating the longitudinal torsional rigidity effective rate of a rectangular pipe-jacking tunnel under combined acting force and a storage medium. The method comprises the following steps that S1, the bending-pressing-twisting combined acting force on a calculation unit of the rectangular pipe-jacking tunnel is obtained according to the stress condition of the rectangular pipe-jacking tunnel; s2, the stress state of the pipe jacking lining structure is judged according to the relation between the bending moment and the axial force, and the stress state of the structure is divided into two different conditions according to the position of a neutral axis; s3, for different stress states, according to deformation coordination conditions and mechanical equilibrium conditions, calculating the distance between a neutral axle on the section and the center of the section; s4, according to the torque balance condition and further according to the two different conditions, the position of the torsion center and the anti-friction torque generated by the concrete in the pressed area are calculated; and S5, calculating a joint torsion angle and equivalent torsional rigidity, and further calculating the effective rate of the torsional rigidity. The longitudinal torsional rigidity effective rate of the rectangular pipe-jacking tunnel under the bending, pressing and twisting combined acting force can be rapidly and accurately obtained, and a basis is provided for structural safety analysis of the rectangular pipe-jacking tunnel.

The invention relates to the technical field of vehicle control, and discloses a method and device for vehicle linear tracking control and a vehicle. The vehicle linear tracking control method comprises the steps of obtaining first position information of a navigation receiver, a vehicle wheelbase and a first distance between the position of the navigation receiver and the center of a vehicle rear axle; determining a preview point on the target driving straight line according to the first position information of the navigation receiver and the current vehicle speed; based on a trigonometric function relationship, determining a target corner according to the first position information of the navigation receiver, the second position information of the preview point, the vehicle wheelbase and the first distance; and controlling the vehicle to run according to the target corner. According to the vehicle linear tracking control method provided by the invention, errors in linear tracking control can be reduced, and the control precision is improved.

The invention relates to a wall-climbing robot on a large metal structure surface, in particular to a variable-wheelbase magnetic wall-climbing robot which comprises a variable-wheelbase mechanism, a walking mechanism and a steering mechanism, the variable-wheelbase mechanism comprises a front fixing plate, a rear fixing plate, a supporting shaft and a variable-wheelbase power source, and the front fixing plate and the rear fixing plate are connected through the supporting shaft; one fixing plate is linked with the supporting shaft, and the other fixing plate is rotationally connected with the supporting shaft; walking mechanisms are mounted at the two ends of the front fixing plate and the two ends of the rear fixing plate, are connected through a steering mechanism mounted on the front fixing plate, and synchronously adsorb and walk on a metal wall surface; the walking mechanisms at the two ends of the rear fixing plate are connected through a steering mechanism installed on the rear fixing plate and synchronously adsorb and walk on the metal wall face. The invention has the characteristics of modularization, compact, simple and light structure, flexible movement, wide adaptability, easy installation and high control precision.

The utility model belongs to the technical field of trailer tools, and particularly relates to a limiting device for a low flatbed semitrailer, which comprises a connecting support bottom plate, clamping fixing blocks are slidably arranged on two sides of the connecting support bottom plate, and a plurality of adjusting positioning seats are fixedly connected to the top end of the connecting support bottom plate. Vertical linkage blocks are slidably connected to the top ends of the adjusting positioning seats, locking blocks are slidably connected to the top ends of the vertical linkage blocks, horizontal alignment blocks are slidably connected to the inner sides of the vertical linkage blocks, the locking blocks are clamped to the horizontal alignment blocks, and limiting rings are fixedly connected to one sides of the horizontal alignment blocks; through the cooperation of the adjusting positioning seat, the horizontal alignment block and other parts, when the low-flatbed semitrailer transports a vehicle, the limiting and fixing work of the vehicle can be completed, the limiting and fixing position can be freely adjusted according to the actual wheelbase and other conditions of the vehicle, and therefore the purpose of adapting to different vehicles is achieved; and the disassembly and assembly work of workers can be facilitated.

The invention relates to the technical field of vehicle detection, and particularly discloses a vehicle overall dimension measurement method. The method comprises the following steps: 1, respectively installing a left laser radar and a right laser radar on two sides of a detection area where a vehicle runs, 2, unifying point cloud data sets collected by the left laser radar and the right laser radar to the same coordinate, and denoising the point cloud data according to a set threshold range to obtain a left point cloud data set L and a right point cloud data set R; 3, subtracting the X coordinate of the R from the X coordinate of the L to obtain the width of the vehicle; obtaining a Z coordinate value from the data set R or L to obtain the height of the vehicle; 4, detecting the time T1 and T2 of the vehicle entering and exiting the detection area through the left laser radar and the right laser radar; the photoelectric switch array measures the average speed V of the vehicle, and the vehicle length is obtained through calculation according to a formula; and 5, measuring the wheelbase of the vehicle through the photoelectric switch array. The objective of the invention is to solve the problems that three laser radars are adopted to measure the overall dimension of a vehicle, the required vehicle site is large, and the equipment cost is high.

The invention relates to a wheelbase-adjustable double-wheel suspension and a vehicle using the same, belongs to the technical field of vehicle chassis, and particularly relates to the technical field of balanced suspension control. The double-wheel suspension is connected with two wheels through a multi-connecting-rod mechanism according to the set axle distance, double-wheel bearing is achieved, suspension mechanism linkage is achieved, double dampers deform in a coordinated mode, and the longitudinal double-wheel balanced suspension is provided, has the advantages of being good in ground adaptability and longitudinal stability and is applied to balanced suspension systems of various multipurpose automobiles. On the basis, the two-wheeled electric vehicle is provided, the wheelbase of the vehicle is dynamically adjustable, the front shock absorber and the rear shock absorber deform in a coordinated mode, and a new method is provided for design of the electric motorcycle.

A train open-top wagon measurement and inspection system and method. The system comprises: a LiDAR group, which is used for generating a laser to scan a train and collecting profile information of the train, wherein the profile information is point cloud data; a wagon identification apparatus, which is used for measuring the wheelbase of the train, determining the wagon type of each wagon of the train on the basis of the wheelbase and the point cloud data, and generating a coupler signal between wagons of the train; and a detection module, which is used for segmenting, on the basis of the coupler signal, the profile information of the train into wagon profile information taking a wagon as a unit, calculating the volume of loaded objects in the wagon on the basis of the wagon profile information when the wagon is an open-top wagon, and identifying foreign matters in the loaded objects.

The invention discloses a new energy vehicle chassis with variable wheel track torque and height, and relates to the technical field of new energy vehicle chassis. According to the new energy vehicle chassis with the variable wheel track torque and height, a positioning sliding plate and an adjusting frame can be driven to slide in the horizontal direction through operation of an adjusting cylinder body II, and then hubs and tires can be driven to horizontally move along with the positioning sliding plate and the adjusting frame, so that adjustment of a single set of wheel tracks is achieved; and meanwhile, the first adjusting cylinder body runs to drive the adjusting frame to slide in the vertical direction, the hub and the tire can be driven to slide up and down along with the positioning sliding plate and the adjusting frame, the height between the hub and the ground is adjusted, and the adjusting convenience and the using effect of the vehicle chassis are effectively improved.

A non-powered bogie and a railway vehicle, the non-powered bogie comprising a frame, a wheel set (2), a primary suspension device (3), a secondary suspension device (4) and a traction device (5), wherein the frame comprises a cross beam (12), side beams (11) and a primary mounting seat (13); the two side beams (11) are arranged in parallel to each other, and the cross beam (12) is connected between middle portions of the two side beams (11); the primary mounting seat (13) is disposed at end portions of the side beams (11); each side beam (11) comprises a side beam body (11a) and an air spring mounting portion (11b), with the air spring mounting portion (11b) being disposed on an outer side of a middle portion of the side beam body (11a); the cross beam (12) is provided with a central pin hole (1241); the wheel set (2) comprises an axle (21), wheels (22) and an axle box (23), with the axle box (23) being located on inner sides of the wheels (22); the primary suspension device (3) is arranged between the axle box (23) and the primary mounting seat (13); the secondary suspension device (4) is disposed on the air spring mounting portion (11b); and the bottom end of the traction device (5) is inserted into the central pin hole (1241) of the cross beam (12). In the non-powered bogie and the railway vehicle, the stability of supporting and buffering a vehicle body can be improved, and the primary mounting seat (13) as an independent component is assembled with the side beams (11) and can be suitable for bogies with various wheelbases, thereby reducing the production cost.

The invention discloses a blocking device for a railway flatcar. The blocking device comprises a connecting unit, a wheel chock and a guide unit, the wheel chock is arranged on the connecting unit; the connecting unit is detachably connected with the guide unit; the guide unit is arranged on the side portion of the flatcar and is used for fixing the connecting unit and the chock and driving the connecting unit and the chock to move longitudinally. According to the covering and blocking device, the floor cannot be damaged, the reinforcing mode is firmer and more reliable, and longitudinal adjustment can be conducted within a certain range so as to adapt to reinforcing of vehicle types with different axle distances. Meanwhile, the structure is simple, operation is easy, cyclic utilization can be achieved, and cost is saved.

The invention provides a suspension state determination method and device, electronic equipment and a readable storage medium. The method comprises the following steps: acquiring unsprung information of a front axle of a vehicle; according to the axle distance between the front axle and the rear axle, delay information of the front axle and the rear axle passing through the same position is determined, and unsprung information of the rear axle is determined according to the delay information and the unsprung information of the front axle; establishing a sprung motion equation and an unsprung motion equation according to the seven-degree-of-freedom model of the vehicle; establishing a state equation according to the unsprung motion equation, and establishing an observation equation according to the unsprung motion equation, the unsprung information of the front axle and the unsprung information of the rear axle; and performing Kalman filtering processing on the unsprung information of the rear axle according to the state equation and the observation equation, and outputting the optimized unsprung information of the rear axle. The delay of the front axle and the rear axle passing through the same position can be determined by using the axle distance between the front axle and the rear axle, so that the rear axle unsprung information is estimated through the front axle unsprung information, the data acquisition process of the rear axle unsprung information is simplified, and the sensor cost of the rear axle is saved.

The utility model relates to the field of automobile detection auxiliary equipment, in particular to a four-wheel drive chassis dynamometer suitable for different wheelbases, which comprises a bottom plate, the upper end of the bottom plate is fixedly connected with a rear chassis dynamometer frame, the rear end of the rear chassis dynamometer frame is fixedly connected with an electric telescopic rod, and the output end of the electric telescopic rod is fixedly connected with a front chassis dynamometer frame. The front and rear sides in the front chassis dynamometer frame and the rear chassis dynamometer mechanism are rotatably connected with a second test roller and a first test roller respectively, and the rotating shaft end parts of the second test roller and the first test roller are connected with a second acceleration sensor and a first speed sensor respectively. The upper end of the bottom plate is connected with a limiting plate through a displacement adjusting assembly. According to the utility model, under the action of the limiting plate, the driving roller of the automobile can be blocked and limited, so that the probability that the automobile rushes out of a test station is reduced when the automobile is tested, and the automobile can be tested more smoothly.

The invention provides a whole vehicle axle load generation method and device, terminal equipment and a storage medium, and the method comprises the steps: obtaining the whole vehicle mass of a target vehicle model, and dividing the whole vehicle mass into a servicing mass module, a passenger mass module and a rated load mass module according to the mass distribution of the vehicle in different states; calculating a servicing mass front axle load of an equivalent mass center of the servicing mass module under the first whole vehicle axle distance based on an association relationship between each part in the servicing mass module and the whole vehicle axle distance; a passenger mass front axle load of the passenger mass module under the first vehicle axle distance is generated according to the distance between the passenger mass center and the front wheel center; generating a rated load mass front axle load of the rated load mass module under the first vehicle axle distance according to the distance from the center point of the trunk to the center of a front wheel; and according to the curb mass front axle load, the passenger mass front axle load and the rated load mass front axle load, the whole vehicle axle load of the target vehicle model is generated. According to the method, the whole vehicle axle load calculation efficiency and flexibility of different vehicle types can be improved.

The invention provides a target vehicle pose detection method and system based on a single-line laser radar point cloud, and relates to the technical field of vehicle positioning, and the method comprises the following steps: S1, carrying out the preprocessing of point cloud data collected by a laser radar based on a DBSCAN algorithm, screening out noise points, and generating an effective cluster; s2, performing L-shaped feature fitting on each cluster, and calculating a tire center point coordinate; s3, calculating vehicle pose data according to the at least three tire center points, wherein the vehicle pose data comprises a wheelbase, a vehicle center coordinate and a parking angle; and S4, transmitting the vehicle pose data to a parking AGV control system through a communication protocol. The method has the beneficial effects that by adopting the positioning method integrating the laser radar and AGV four-wheel positioning, the vehicle navigation and positioning precision is further improved; a laser radar point cloud is combined with an L-shaped feature fitting algorithm, the pose of a target vehicle is obtained in the walking process of the parking AGV, the pose detection efficiency of the parking AGV is improved, and the walking fluency of the parking AGV is improved.