71 results about "Driving test" patented technology

The utility model provides a kind of for the target of surrounding barrier of intelligent driving test auxiliary, including wallboard (01), support plate (02), rear support strip (03), tray (04), wherein, wallboard (01) is adhered with both sides support plate (02) by magic tape, rear support strip (03) is installed in wallboard (01) rear side, rear support strip (03) is adhered with wallboard (01) and both sides support plate (02) by magic tape, support plate (02) is connected with tray (04) by two magnetic attraction support points, in the width direction of wallboard (01) according to the assembling mode of wallboard (01) connection support plate (02) again connection wallboard (01) expansion target of width, the target of this surrounding barrier structure is simple, can realize the iron wall surrounding barrier for simulating test road environment of quick installation, meet surrounding barrier target width adjustable simultaneously.

The utility model discloses a positioning structure of assembly testing fixture relates to automobile parts detection equipment technical field. The device includes frame, side plate, first swivel lever, L type seat, testing fixture platform, testing fixture ontology and positioning mechanism. Among them, side plate fixedly connected on the frame upper end, and first swivel lever rotatoryly connected in side plate side end, and L type seat fixedly connected in first swivel lever one side end. Positioning mechanism includes mounting plate, air cylinder, rectangle plate, third mounting seat, third positioning roller and positioning subassembly. Positioning subassembly contains first mounting seat, second mounting seat and first positioning roller, is used for carrying out transverse limit to testing fixture ontology. Through gear drive structure drive testing fixture platform rotation, and the angle adjustment and positioning are realized to limiting block and positioning seat. The device through the synergetic effect of multipoint guide and gear drive structure, has realized the efficient positioning and stable support to testing fixture ontology, has promoted the positioning, satisfies the detection demand under a variety of working conditions.

The application discloses a kind of unmanned plane freedom degree attitude test analysis system and method, wherein a kind of unmanned plane freedom degree attitude test analysis system, freedom degree attitude simulation module, based on quaternion dynamics model, simulates the attitude change of unmanned plane;Sensor dynamic calibration module, automatically identifies and calibrates gyroscope zero offset, accelerometer scale error, magnetic compass hard iron / soft iron interference;Multi-throttle vector control module, respectively control motor throttle, simulate extreme working condition;Flight control algorithm verification module, real-time injection attitude error, assess convergence time, overshoot, steady-state error;Data fusion and visualization module, real-time fusion data, support multi-dimensional visualization;Automated test script module, support Excel process driven test;Authority and data security module, carry out hierarchical authority management, support test data encryption, operation log audit, parameter tamper prevention.

The utility model relates to the field of lifting, especially a lifting device and airtight pressure testing machine, including lifting drive mechanism and testing mechanism, the testing mechanism includes the test platform and sets up a plurality of elevating gear in the test platform bottom, elevating gear is along the extension direction of test platform and is arranged, lifting drive mechanism and test platform are connected, elevating gear includes first connecting block, second connecting block and connecting rod, first connecting block sets up on the test platform, second connecting block is fixedly arranged below test platform, the both ends of connecting rod are connected with first connecting block and second connecting block swingly, the driving direction of lifting drive mechanism and the plane of test platform form the preset angle between, to drive test platform to lift. Adopt the utility model, prevent deformation, reduce cost.

The application discloses a digital quantity driving polarity conversion circuit, a device and an electric vehicle relay driving test system, and is applied to the electric vehicle electronic test technical field, and is used for solving the problem that the signal polarity of the vehicle-mounted controller and the external equipment is not matched in the prior art. Specifically, the input end of each first conversion channel and the input end of each second conversion channel are connected in parallel to a signal input node, and the output end of at least one first conversion channel or the output end of at least one second conversion channel is connected to the digital quantity input end of the external equipment; the first conversion channel converts the input high-side driving signal into a low-side driving signal and outputs; the second conversion channel converts the input low-side driving signal into a high-side driving signal and outputs, realizing the bidirectional polarity conversion function of the high-side driving signal and the low-side driving signal, so that the same external controller can be adapted to the external equipment with different signal polarities.

The present application relates to the technical field of intelligent driving car perception system evaluation, and relates to a kind of intelligent perception system credibility multidimensional test evaluation method.First, each basic test scene data is acquired, and each interference scene factor is determined based on each extended test scene data.Vehicle automatic driving test is carried out, the perception data of intelligent perception system is determined, and based on the perception data, according to the evaluation method, the evaluation result of intelligent perception system is determined.Based on the prior experience of experts, an optimization model is determined.Genetic algorithm is used to solve the optimization model to determine the weight of the evaluation result.According to the evaluation result weight and the evaluation result, the credibility of the intelligent perception system is determined.This scheme combines the prior experience of experts and genetic algorithm optimization, which not only utilizes the domain knowledge, but also avoids subjective bias through objective optimization, so that the index weight distribution is more in line with the actual demand, and the accuracy of the credibility evaluation is improved.

The present application belongs to the technical field of automatic driving test, and in particular to a test scene credible acceleration generation method based on multi-simulator consistency verification. First, the traffic scene to be tested is parameterized, and a simulator with different dynamics, sensors and behavior models is selected. The same scene parameters are synchronously mapped into each simulator for execution, and the results such as the host vehicle response, collision state, minimum distance, etc. are collected. Then, the consistency deviation of the multi-simulator in risk scoring, failure judgment and trajectory evolution is calculated, a credible risk benefit index is constructed, and credible high-risk scenes are selected. According to the index distribution sampling weight, the acceleration generation distribution is updated, and the new scene is ensured to be compliant through constraint projection. Finally, the credible failure risk of the automatic driving system is estimated by using the reweighting relationship between the natural scene and the generated distribution and combining the consistency results. The present application can effectively eliminate the pseudo-high-risk scenes caused by the deviation of a single simulator, and improve the credibility and stability of the test scene generation.

The application discloses a kind of automatic driving test scene generation methods considering two-wheel vehicle driver behavior, comprising: obtaining the numerical data and text data of multiple motor vehicle-two-wheel vehicle traffic accident samples;Numerical data constructs classification variable matrix and continuous variable matrix;Traffic accident document set is obtained based on text data;The correlation of classification variable matrix is handled, and the data corresponding to redundant variable is deleted;For traffic accident document set, theme label classification and theme keyword extraction are carried out by GSDMM model, and accident reason classification variable matrix related to two-wheel vehicle driver behavior is generated;The above matrix is integrated to construct accident scene input variable matrix, and its row vector is clustered and analyzed to obtain cluster label matrix and cluster prototype matrix, so as to obtain the scene description corresponding to each traffic accident type, and automatic driving test scene is generated accordingly.The application can automatically generate automatic driving test scene with authenticity and diversity.

This utility model belongs to the technical field of solid-state drive (SSD) test benches and discloses an adjustable SSD test bench, including a support frame. A fixed shell is connected to the surface of the support frame, and a drive source is connected to the inner bottom of the fixed shell. A transmission component and a support component are respectively arranged on the fixed shell. This utility model uses the shape characteristics of a half-gear to drive the adapter rod and the test circuit board body to rotate in a half-turn trajectory, which facilitates the sequential rotation of test slots in different positions to the operator. This eliminates the need for the operator to move around to insert SSDs or to stretch out their arms and body for a long time to insert SSDs. Furthermore, the multiple test slots allow for simultaneous testing of multiple SSDs, improving the efficiency of SSD testing. The test status display screen, which is electrically connected to the test circuit board body, facilitates the display of SSD insertion results. If a failure occurs, its location can be displayed in time, improving the accuracy of SSD testing.

This application relates to an interactive ultrasonic radar driving test method and system. The method includes: responding to an acquired ultrasonic radar model identification code, matching the corresponding configuration scheme according to the ultrasonic radar model identification code to obtain a configuration frame; parsing the configuration frame to obtain configuration data and a configuration status frame; responding to an acquired calibration start command, performing interactive calibration based on the sensor connection channel and the configuration data to obtain calibration data and a calibration status frame; the calibration data includes calibration curves, error indicators, and anomaly flags; responding to an acquired test start command, performing driving tests based on the sensor connection channel and the configuration data, and correcting based on the calibration data to obtain test results. This method can achieve multi-model adaptation, interactive correction, and anomaly detection of ultrasonic radar sensors through frame communication mechanisms and state-driven logic, improving overall testing efficiency and the reliability of inspection results.

The application relates to the field of automatic driving test, in particular to a target object chassis control method and system, an electronic device and a medium. The control method is suitable for a virtual control input device that can be recognized by original driving software of a target object chassis, and is used as a unified control entrance between an upper test module and a chassis execution layer. The method comprises the following steps: receiving output data of the upper test control module as task input of the target object chassis; generating expected physical quantities according to the task input and real-time pose feedback information of the target object chassis; converting the expected physical quantities into virtual control inputs recognizable by the original driving software of the chassis based on a pre-established control quantity-vehicle physical quantity mapping relationship; and sending the virtual control inputs into the original driving software of the chassis so that the original driving software of the chassis drives the target object chassis to perform corresponding movements. The application can realize automatic closed-loop control of the target object chassis, dynamic game scenario reproduction, low platform migration cost and self-controllable technology implementation.

This invention belongs to the field of ramjet engine direct-drive testing technology. It provides a ramjet engine direct-drive testing method based on operating condition adaptation and control, comprising: during the ramjet engine direct-drive test, gradually adjusting test parameters, performing operating condition scanning, recording combustion chamber pressure fluctuation data under each operating condition, and determining oscillation-sensitive areas; performing multiple repeated tests on each operating condition within the oscillation-sensitive area to identify the probability of pressure oscillation occurring under each operating condition within each oscillation-sensitive area, and determining high-probability pressure oscillation operating conditions; extracting high-probability pressure oscillation operating conditions, and using Fast Fourier Transform to extract the dominant frequency of the direct-drive test oscillation; this invention can effectively avoid engine shutdown, structural damage, and other failures caused by oscillations in actual flight, ensuring engine flight safety and operational stability.

This application provides a driving test scenario conversion method, apparatus, terminal device, and program product. The method includes: acquiring a scenario to be converted and determining the map road features corresponding to the scenario; determining a similar map region in a target map corresponding to the map road features; mapping the driving trajectory in the scenario to be converted to the similar map region; and associating the driving trajectory in the similar map region with the target map to obtain a driving test scenario corresponding to the target map. This method directly maps the driving trajectory in the scenario to be converted to a similar map region of the target map based on the map road features, and associates the driving trajectory in the similar map region with the target map to obtain a driving test scenario corresponding to the target map; thus avoiding the process of manually setting the driving test scenario in the target map, this method can improve the efficiency of setting driving test scenarios.

The application discloses a kind of calibration test device and method, it is related to measurement test technical field.The calibration test device includes heating piece, driving piece and control assembly.Heating piece defines and contains cavity, the inner peripheral wall of heating piece is adapted to test piece, heating piece is used to heat test piece to preset temperature.The output end of driving piece extends into containing cavity, the output end of driving piece can be connected with test piece and can drive test piece vibration.Control assembly is connected with heating piece and driving piece, and control assembly is used to control the preset temperature of heating piece and the vibration degree of test piece.The calibration test device can improve the reliability of test piece calibration test.

The utility model relates to a kind of low rolling resistance tire structure, belong to tire manufacturing technical field, including tread, the both sides of the tread are fixedly connected with sidewall, the tread and sidewall form carcass, the inner wall of the sidewall is fixedly connected with bead, the outer surface of the tread is equipped with pattern groove. Significantly reduce rolling resistance: through laboratory test and actual road driving test verification, compared with traditional full steel tire, the rolling resistance coefficient of full steel tire using the patent technology can be reduced by 12%, which means that the resistance to be overcome by vehicle during driving process is greatly reduced, can effectively reduce fuel consumption, for long-distance transport vehicles etc., energy-saving effect is particularly remarkable, improve fuel economy: due to the reduction of rolling resistance, fuel consumption of vehicle under the same driving condition can be reduced by 7%, reduce operating cost, also meet the current energy-saving and emission-reducing environmental protection requirements, reduce tail gas emission, with good social benefits.

This invention discloses a wheel-soil interaction mechanical performance testing device based on a series moving pair mechanism, comprising a support box, a wheel and its driving test module, a vertical and lateral driving test module, a longitudinal driving test module, a lateral driving test module, and a data processing module. Under soft soil conditions, the device can control wheel speed, vertical load, lateral tilt angle, longitudinal travel speed, and lateral slippage, while simultaneously monitoring parameters such as wheel settlement, longitudinal force, lateral force, and lateral tilt force. The data processing module analyzes the collected data to generate wheel-soil interaction mechanical characteristic curves. This device can efficiently acquire mechanical performance data of elastic wheels on soft ground, providing a reliable basis for vehicle dynamics simulation and structural design.

An autonomous driving performance evaluation device includes a navigation providing unit configured to provide a virtual road navigation for evaluating autonomous driving performance when it is detected that a vehicle enters a driving test site, an evaluation mode setting unit configured to variably set an evaluation mode of the virtual road navigation according to a purpose of evaluating autonomous driving performance, and a scenario providing unit configured to selectively provide at least one scenario among a plurality of scenarios included in the virtual road navigation according to the set evaluation mode, wherein the virtual road navigation guides a virtual road virtually generated from a specific actual evaluation road designated for evaluating the autonomous driving performance.

The utility model relates to cloth detection device technical field. A kind of cloth colour fastness detects and uses rubbing device, including test platform, several paper positioning rollers are equipped in left end on test platform, test platform is slidably equipped with test slide, the end of test slide is equipped with test sliding block, detachable clamping frame is equipped outside test sliding block, the middle part of test platform is equipped with heightening structure, the side of test platform is equipped with driving mechanism for driving test slide transverse reciprocating sliding;The right end of test platform is equipped with extrusion structure.The utility model provides a kind of cloth colour fastness detects and uses rubbing device, which can be controlled conveniently, can realize automatic test and record, reduce manual operation, can guarantee test result accurate, can satisfy higher test demand;Solve the technical problem that the current cloth friction test is usually manually operated in the prior art, which consumes manpower and cannot guarantee the accuracy of test results each time, and cannot meet higher test requirements.

This invention discloses a hydraulic drive dynamic performance verification test device and method, belonging to the field of hydraulic robot testing technology. The device includes a hydraulic system, an inverted pendulum hardware system, and a data acquisition and feedback system. The hydraulic system includes a pump station module and a motor module. The pendulum rod and slider in the inverted pendulum mechanism are detachable, allowing switching between full-drive and under-drive test modes by assembling and disassembling the pendulum rod. The data acquisition and feedback system includes a main control computer, a motion control card, and a servo motor driver, responsible for data acquisition and command issuance. This verification method sequentially completes the overall nonlinear modeling of the device, displacement tracking test, pendulum start-up test, steady-state zero-position test, and pulse disturbance rejection test, achieving a comprehensive quantitative evaluation of the device model accuracy, transient agility, steady-state control accuracy, and anti-interference capability. This invention can reproduce the nonlinear characteristics of hydraulic and mechanical coupling, offers convenient switching between operating conditions, and has a complete test system, providing reliable experimental support for optimizing the control strategy of hydraulically driven robots.

The application provides an automatic driving test scene generation method and system based on accident text data driving. The method comprises the following steps: acquiring accident text data and extracting core scene elements; reorganizing the core scene elements into a scene content description of sub-modules; generating a simulation scene code in sub-modules based on the scene content description and following preset generation constraint rules; combining the simulation scene code of each module to generate a test scene script and perform a simulation test; if the simulation test fails, performing syntax legality verification and correction on the simulation scene code and re-executing the simulation test until the verification passes. By introducing a large language model and a retrieval enhanced generation mechanism, the application automatically extracts scene elements from accident case texts and generates test scenes that meet the simulation engine, achieving efficient, scalable and high-fidelity accident reproduction and testing.

The application relates to a vehicle driving test scene generation method and device, a vehicle and a readable storage medium. The method comprises the following steps: constructing a driving field knowledge graph based on semantic association relationships and physical constraint relationships among multidimensional entities; reading entities related to driving tests and association relationships among the entities in the graph, constructing a triple vector, and injecting the triple vector into a pre-trained language model to obtain a knowledge-enhanced large language model through training; performing cross-dimension logical reasoning based on the large language model to generate a test scene library; obtaining decision response data generated by a measured system under each driving test scene to determine the semantic entropy of each driving test scene; and removing redundant test scenes in each driving test scene based on the size relationship between the semantic entropy of each driving test scene and a preset threshold to construct a target test scene library. The method can improve the mining and identification capability of unknown high-risk scenes in simulation testing and improve the utilization rate of test resources.

The utility model discloses a kind of electric vehicle test platform, it is related to electric vehicle test technical field, and the utility model includes fixed platform, and the both sides of fixed platform are slidably installed with telescopic platform, two movable plates are slidably installed in two telescopic platforms, and detachably installed with test roller between two movable plates of same side, and the outer surface of test roller is fixedly installed with convex strip, and the outer surface of test roller and the outer surface of electric tricycle wheel are in movable contact, the utility model in the present application is moved by setting cross bar and drives telescopic platform, to drive test roller to move, the distance between two test rollers is adjusted, different sizes electric tricycle are tested conveniently, improve the practicability of device, the utility model in the present application is limited to test roller by in plug rod, the installation and disassembly of test roller are realized, test roller is replaced conveniently, and then by the replacement of test roller, device can simulate different road surface and test electric tricycle, improve the practicability of device.

1. The name of the design product: dynamic driving simulator. 2. The use of the design product: the design product is used for driving training, driving test. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

This invention relates to the field of autonomous driving simulation data processing technology, and discloses an autonomous driving simulation testing method and system based on a large-scale agent model. The method includes: acquiring autonomous driving test requirement text; executing risk scenario combinations; performing test case orchestration preprocessing; executing autonomous driving closed-loop simulation testing; and performing anomaly attribution and iterative control. Compared to existing technologies where autonomous driving simulation testing relies on manual breakdown of test requirements, especially under complex risk conditions such as sudden crossings by traffic participants, it fails to achieve continuous linkage between test cases, test execution, and anomaly attribution within the simulation scenario. This application achieves continuous closed-loop processing of autonomous driving simulation testing from requirement analysis to test iterative control by using a large-scale agent model to structurally parse test requirements and sequentially applying the test task description set to risk scenario combinations, test case orchestration, and closed-loop simulation execution.

The utility model discloses a kind of film sensor detection calibration machines, it includes: rack, standard sensor being set on rack, fixture being set on standard sensor and being used for positioning product, test module being set above fixture and for product exerting force, and lifting drive module for driving test module lifting and product contact and disengagement.Adopt the standard sensor being set below product, by comparing the measurement results of product and standard sensor under same condition, to judge whether product meets precision requirement, for product not meeting requirement, utilize built-in controller to automatically fit calibration curve, and store to sensor chip, make product measurement results and standard sensor keep consistent, realize the automatic calibration of product.The standard sensor is standard pressure sensor.

The application provides an automatic driving test exception reporting method and device and a computer device. The method comprises the following steps: during the operation of an automatic driving vehicle in an automatic driving mode, if the automatic driving vehicle is manually taken over, a set of planning trajectories corresponding to a last timestamp before the automatic driving vehicle is taken over is acquired, and an actual running trajectory after the automatic driving vehicle is taken over is recorded; the actual running trajectory is compared with each planning trajectory in the set of planning trajectories to select a target planning trajectory; and exception reporting is performed according to the target planning trajectory and a decision planning trajectory. The method enables a safety officer to report problems one by one through manual voice without the need to guarantee the concentration of the safety officer when escorting the automatic driving vehicle, and improves the safety of the safety officer when performing a task. Meanwhile, the content reported by the method provides sufficient information for engineers to perform exception processing, and guarantees the accuracy of exception reporting.

The utility model discloses a kind of escalator drive chain fatigue life multi-working condition simulation machines, it is related to escalator drive chain production technical field;And the utility model includes underframe, the upper surface of the underframe is equipped with dismounting mechanism, one side of the dismounting mechanism is equipped with driving mechanism, one side of driving mechanism is fixedly connected with underframe, the dismounting mechanism includes moving motor, one side of moving motor is fixedly connected with one end of underframe, the output of moving motor is fixed with threaded rod, the outside thread of threaded rod is equipped with moving frame, the upper surface of moving frame is fixed with positioning frame, the upper end of positioning frame is rotatably equipped with driven sprocket, one end of underframe is fixed with limiting frame, the utility model is equipped with dismounting mechanism, the distance between driven sprocket and driving sprocket is easily adjusted, to facilitate the installation and dismounting of drive test chain, improve test efficiency, so that the whole dismounting mechanism operation is more stable and reliable.

The application discloses a dynamic traffic scene generation method based on a pre-training trajectory large model, belonging to the field of traffic scene simulation, aiming to overcome the limitations of traditional methods in generating complex and high-fidelity dynamic scenes. The method includes: constructing a space-time scene graph representation containing static and dynamic information; using a large-scale pre-training trajectory large model to generate a prediction trajectory sequence of multiple agents by taking the space-time scene graph representation as a conditional input, so as to capture complex space-time interaction rules; and finally converting the sequence into high-fidelity dynamic scene data. The scene generated by the application conforms to real traffic rules and behavior habits, has high fidelity, diversity, controllability and efficiency, and provides a reliable data source for automatic driving test and traffic flow simulation.

The utility model discloses caliper slip force testing arrangement, include: support frame, one side is equipped with mounting support, and caliper is located mounting support, drive part, is located support frame's other side, test piece, is located drive part's output, and caliper clamps test piece, and the one side of test piece close drive part is equipped with first sensor, and first sensor is used for measuring the resistance that test piece received, second sensor, is located support frame, and the test end of second sensor abuts test piece, and second sensor is used for measuring the displacement of test piece. By external drive caliper clamps test piece, through drive piece drive test piece and move to the direction of far away from caliper, through the first sensor on test piece and measure the resistance size that test piece received, and measure out the displacement of test piece through second sensor simultaneously, draw power - displacement curve, can judge and calculate out the slip force of caliper, and the overall structure is simple, and test data is accurate, and test efficiency is high.