930results about "Vehicle tyre testing" patented technology

A vehicle component balancing robot apparatus, system and method for on vehicle balancing of one or more of a tire, a wheel, bearings, brake components, and vehicle components that impart vibrations to the vehicle. The apparatus includes a frame arranged so as to connect with the vehicle. A robot of the apparatus moves relative to the frame, and is configured so that the move, relative to the frame, resolves a predetermined location of a tire-wheel assembly relative to a reference frame of the robot. The robot has at least one end effector arranged to interface the tire-wheel assembly and the robot moves the at least one end effector to other predetermined locations on a wheel rim of the tire-wheel assembly, determined based on resolution of the predetermined location of the tire-wheel assembly relative to the reference frame.

The invention relates to the technical field of noise measurement systems, in particular to a noise measurement system for a new energy tire, which comprises a tire positioning and driving unit, a sensor unit, a data acquisition and synchronization unit, a data processing unit, a data analysis unit and a man-machine interaction and display unit, the tire positioning and driving unit simulates different loads, different speeds and different road conditions of a tire by using a rack type tire positioning device, and drives the tire to rotate by using a brushless mute motor, so that a high-speed rotating effect without introducing extra mechanical noise is realized; the sensor unit is arranged on the two sides of the tire and at the position close to the ground through an acoustic sensor free field type condenser microphone array, is fixed to the suspension support through an acceleration sensor and is used for collecting vibration signals; the running states of the tire under different loads, speeds and road conditions are accurately simulated, noise data of the tire under various actual working conditions are obtained, and the measurement result is closer to the real situation.

The utility model discloses an indoor tire road noise testing device, which comprises a sound insulation box body, a slope table, a tire driving system and a noise acquisition system, the sound insulation box body is of a closed structure. The slope table is arranged in the sound insulation box body, the slope table is provided with a slope adjusting device, the slope adjusting device is used for adjusting the slope angle of the slope table, and the slope of the slope table is used for placing a pavement test piece; the tire driving system comprises a driving assembly and a tire fixer, the tire fixer is rotatably mounted at the output end of the driving assembly, the tire fixer is arranged in the sound insulation box body and is used for mounting a test tire, and the driving assembly is used for driving the tire fixer to move to drive the test tire to impact the pavement test piece; the noise acquisition system is used for acquiring sound data in the sound insulation box body. The slope table is used for simulating the actual road surface condition, the noise condition of the designed road surface can be tested in the design stage, the actual effect is effectively guaranteed, and the problem that low-noise road surface design is difficult to verify in the design stage is solved.

The invention relates to the technical field of wheel performance testing, in particular to a laboratory testing method and system for representing the gripping performance of tire tread rubber on a wetland epoxy floor. According to the method, a thin water film of 10-100 microns is stably maintained on a representative epoxy substrate through online thickness measurement and closed-loop film control, a mu-slip rate curve is obtained at the slip rate of 0.1-10%, mu 0, mu max, delta mu and mu 10% are extracted and are subjected to in-situ fusion with British pendulum BPN under the same substrate and the same film thickness, and a wetland epoxy comprehensive grip index (WEGI) is formed. According to the method, the repeatability under the thin water film working condition and the comparability between laboratories are remarkably improved; embodiments show that the introduction of a small amount of LSBR and fine cutting grooves can synchronously improve [mu] max and BPN, while the repeatability of uncontrolled film, non-representative substrate or real vehicle test is poor. The method is suitable for rapid optimization of a new energy automobile tire tread formula.

The invention relates to the technical field of tire detection, in particular to a method for identifying abnormal vibration of a tire through color difference of an automobile tire tread, which comprises the following steps: generating a point cloud picture; generating a first tire surface height point cloud picture at the first rotating speed; generating a first visual point cloud picture and determining an abnormal vibration level; dividing detection intervals, wherein n detection point sets are configured in each detection interval; generating a second tire surface height point cloud picture at a second rotating speed; reducing the rotating speed of the tire at a preset rate, calculating a stability score, and judging whether the stability of the detection device meets requirements or not; and in response to the satisfaction, rendering the tire surface to generate a second visual point cloud picture, and determining an abnormal vibration level. According to the method, the height difference of the tire surface height at each detection point position is calculated, and the tire surface is rendered according to the height difference and the preset color matching mechanism, so that the vibration condition caused by the tire surface height can be intuitively and visually displayed.

The invention discloses a coating type puncture device for tire sealing performance testing, and relates to the technical field of tire testing, the coating type puncture device comprises a base, one side of the base is fixedly connected with a vertical plate, the upper surface of the base is fixedly provided with a mounting block, and the interior of the mounting block is rotatably connected with a driving shaft; one end of the driving shaft extends to the outer side of the mounting block and is fixedly connected with the output end of the driving motor, the other end of the driving shaft is provided with a test tire, the test tire is connected with the driving shaft through a locking piece, the test device further comprises a rotating mechanism and a moving mechanism, the rotating mechanism is arranged on the side, close to the vertical plate, of the test tire, and the moving mechanism is arranged on the vertical plate. And the moving mechanism is arranged above the test tire. The device can automatically puncture and pull out a nail, can accurately control the puncture position, depth and angle, and highly simulates the condition that a tire is punctured by a sharp object in actual driving, so that the test result is more suitable for a real scene, manual participation steps are reduced, and the test safety is enhanced.

The invention provides an internal detection sensor and a tire inner cavity appearance detection system, and belongs to the field of industrial automatic visual detection. The internal inspection sensor comprises a laser emitting unit and an image collecting unit, and can project an annular laser beam with the covering angle not smaller than 340 degrees and collect an inner wall image. The system comprises the sensor, an industrial robot and a tire expander. The industrial robot sends the sensor to a tire internal channel opened by a tire expander; when the tire expander drives the tire to rotate, the static sensor can perform 360-degree panoramic image acquisition on the rotating inner wall.

The invention discloses a tire high-speed uniformity dynamic test method, device and equipment under multi-axis excitation, and relates to the technical field of vehicles. The tire high-speed uniformity dynamic test method under multi-axis excitation comprises the steps that a tire is installed on a test bed with a rotary drum, the test bed is controlled to apply lateral excitation to the tire according to multiple lateral displacements, a high-speed uniformity dynamic test is carried out, and a first test result is obtained; according to the plurality of longitudinal slip rates, controlling the test bed to apply longitudinal excitation to the tire and perform high-speed uniformity dynamic test to obtain a second test result; according to a plurality of composite parameters obtained by combining a plurality of lateral displacements and a plurality of longitudinal slip rates in pairs, controlling the test bed to apply composite excitation to the tire and perform high-speed uniformity dynamic test to obtain a third test result; and summarizing the three test results to obtain a high-speed uniformity dynamic test result of the tire. According to the method, the high-speed uniformity performance of the tire under the complex working condition can be evaluated more comprehensively.

Sensor modules mountable on a wheel are described with methods of use. A sensor module for a wheel includes a base module mountable to a rim. The sensor module further includes a first set of piezoelectric sensors coupled to the base module at a first side and a second set of piezoelectric sensors coupled to the base module at a second side. A method includes receiving a first force from a tire on a piezoelectric sensor mounted on a rim, the force resulting from an inflation of the tire and causing a first strain on the sensor. The method further includes receiving a second force on the sensor corresponding to a deformation of the tire due to surface contact, where the second force causes a second strain. The method also includes generating wheel data from electrical signals produced by the sensor; and transmitting the wheel data to a remote device.

The invention relates to the technical field of tire detection, in particular to a tire puncture resistance detection device and a use method thereof. The tire puncture resistance detection device comprises a portal frame, a tire mounting mechanism, a puncture mechanism and a driving mechanism for driving the puncture mechanism to move up and down are arranged on the portal frame from bottom to top, the puncture mechanism comprises a needle head and a closed needle cylinder, and a central air hole communicated with the needle cylinder is axially formed in the needle head. A rotating ring is rotationally arranged on the outer side wall of the needle cylinder, a plurality of rectangular blades deviating from the axis of the needle cylinder are arranged on the circumference of the outer side wall of the rotating ring at equal intervals, an annular groove communicated with the needle cylinder in a sealed mode is formed in the inner side wall of the rotating ring, and exhaust holes communicated with the annular groove are horizontally formed in the blades. The puncture resistance of the tire can be rapidly judged, the tire is easy to install, and the service life of equipment is long.

The invention relates to a method for monitoring the condition of vehicle tires (10), comprising an electronic condition assessment device (12) comprising an electronic data processing device with a storage unit, comprising the method steps: a) detecting a surface topography for at least one profile section of the vehicle tire (10) with an optical detection unit (12), wherein the optical detection unit comprises an optical image acquisition device (14) and a projection device (16) configured to project a pattern onto the profile section, wherein the electronic data processing device is configured to calculate a three-dimensional representation of the profile section of the vehicle tire (10) from the image of the pattern detected by the optical detection unit on the profile section.b) Acquiring one or more tire parameters of the vehicle tire (10) with one or more electronic acquisition units (18) of the condition assessment device (12), and c) Outputting the surface topography of the vehicle tire (10) or profile condition information derived therefrom and the one or more tire parameters of the vehicle tire (10) via an output unit (20) of the condition assessment device (12).

A hydroplaning detection system includes a processor in communication with a communication system and a warning module in communication with the processor. The warning module receives data from vehicle-based sensors and generates an expected slip, a grip utilization, a drag force, and a calculated slip. The warning module receives data from a tire sensor unit and determines a confidence level by comparing the generated drag force to an expected drag. The warning module includes a hydroplaning detection logic that receives the expected slip, the grip utilization, the drag force, the calculated slip, and the confidence level and generates a hydroplaning detection warning and a warning confidence level. The warning module communicates the warning and the warning confidence level to at least one of a vehicle control system and an operator of the vehicle for action by the vehicle control system or the vehicle operator.

The utility model discloses a wheel tire assembly drop impact test device, and belongs to the technical field of vehicle part tests. The device comprises a supporting structure, a lifting structure and a falling structure. The supporting structure is used for supporting the lifting structure and the falling structure; the lifting structure is used for driving the falling structure to move in the vertical direction and disconnecting the lifting structure and the falling structure under the condition that a falling signal is received, so that the falling structure falls down; the falling structure is used for connecting a wheel tire assembly to be tested and driving the wheel tire assembly to fall down. According to the device, the lifting and falling of the wheel tire assembly are realized through the lifting structure, and the test requirement of the reliability of the wheel tire assembly is met.

A system for measuring a tread of a tire can include a nonmagnetic layer, a frame, and a housing. The nonmagnetic layer can provide a drive-over surface adapted to receive the tire thereon including the tread to be measured. The frame can have a magnet and a magnetic sensor coupled thereto. The housing can include a cavity therein. The frame with the magnet and the magnetic sensor can be mounted in the cavity. The nonmagnetic layer can be provided on the housing and on the frame.

The invention relates to the technical field of tire manufacturing and detection, in particular to a tire appearance defect detection method and system based on a retrieval enhancement generation technology, and the method comprises the steps: collecting image data, and completing the preprocessing of the image data through an edge calculation end; the retrieval enhancement generation module is used for sequentially carrying out picture vectorization processing on the preprocessed data, carrying out vectorization retrieval in a historical defect vector library and then sending the data into a multi-modal large model through the Ethernet to complete data fusion and an image defect judgment result; and the retrieval enhancement generation module outputs a judgment result to the production management end and the edge calculation end, and the production management end archives the judgment result. Compared with the prior art, the detection automation and intelligence are realized, the detection accuracy and efficiency and the production line quality control capability are also remarkably improved, and the production efficiency is improved. The method is suitable for defect identification and quality evaluation tasks of tire appearance detection.

The invention discloses a system and method for intelligently detecting the depth of a tire pattern, and belongs to the technical field of tire safety detection.The system comprises a control system and a detection platform, and the detection platform comprises a base plate and trapezoidal ribs fixedly arranged on the base plate; the control system comprises a detection switch module, an image scanning module, an image generation module, a tread pattern calculation module and a depth judgment module, the detection switch module comprises infrared contact switches arranged on the two sides of the trapezoidal bead, and the image scanning module comprises a laser scanner arranged on the top of the trapezoidal bead and is used for generating three-dimensional coordinate information; the image generation module is used for generating a tire surface three-dimensional image, the tread pattern calculation module calculates the difference value between the maximum height and the minimum height, and the depth judgment module judges the relation between the difference value and the early warning height value and the alarm height value. The tire tread depth detection system has the advantages that the tire tread depth can be detected quickly and simply, and manpower is effectively reduced.

The invention relates to the technical field of tire performance detection, in particular to a tire internal fatigue damage identification method and system based on an intelligent tire sensor. Collecting three-axis acceleration, filtering and normalizing, positioning a grounding region according to an extreme value, and extracting time domain features; according to the method, adaptive window segmentation based on time intervals is introduced, a dual-mode exception framework of extreme value detection and mutation detection is constructed, and precise recognition and time sequence positioning of damage are realized by combining significance weighting and multi-threshold and time aggregation constraints. Core features are screened through PCA to reduce dimensionality and increase speed, robustness and accuracy under complex working conditions are remarkably improved, and the method is suitable for online monitoring and early warning.

The present application relates to the technical field of tire performance testing, and particularly relates to a method, equipment and computer program product for indoor impact test of automobile tire. The method installs an impact strip on a rotating drum of a tire high-speed uniformity test machine, tests impact force and attenuation performance by using the impact strip, and evaluates impact resistance performance of a tire by using a coefficient of variation C.V of a peak-to-peak value RFpp or TFpp, so as to facilitate selection of a tire scheme and correlation research with a real vehicle comfort test result.

This analysis device comprises: a sound absorption rate calculation unit that calculates a sound absorption rate on the basis of design information of a sound absorption structure; a modeling unit that generates a finite element model on the basis of design information of a tire; a sound absorption rate setting unit that sets a sound absorption boundary having a sound absorption rate to a finite element model on the basis of arrangement information of the sound absorption structure with respect to the tire; and a sound pressure analysis unit that analyzes a sound pressure distribution of an internal space of the tire on the basis of the finite element model in which the sound absorption boundary is set.

Provided is a method, etc., for estimating uneven tire wear. This tire state estimation method involves: obtaining an image which includes both ends of the tread of a target tire, and captures said tread from the front in a manner such that said tread is continuous in a prescribed direction; inputting the obtained image into a trained first machine learning model; and deriving an output from the trained first machine learning model. Therein, the output of the trained first machine learning model corresponds to the estimation results for the uneven wear of the target tire.

The invention discloses a tire wear evaluation method and device, electronic equipment and a vehicle, and relates to the technical field of vehicles. The tire wear evaluation method comprises the steps that a reference image and an image to be tested are acquired, and the reference image is a grounding mark image acquired by tire grounding pressure analysis equipment on a new tire under a preset test condition; the to-be-tested image is a grounding mark image acquired by the tire grounding pressure analysis equipment on the old tire with the driving mileage under the same preset test condition; carrying out pattern block feature extraction analysis on the reference image to generate a reference distribution map which represents the size change condition of pattern blocks on the outermost side of the new tire; carrying out pattern block feature extraction analysis on the to-be-detected image to generate a to-be-detected distribution diagram which represents the size change condition of a specific pattern block of the old tire; and analyzing according to the reference distribution diagram and the distribution diagram to be detected to obtain a wear evaluation result of the old tire. According to the invention, tire wear evaluation can be realized efficiently, reliably and intelligently.

To provide a tire simulation method and a tire simulation device which can shorten a computation time of a crack progress.SOLUTION: The tire simulation method includes tire model acquisition step ST01 which acquires a tire model for analyzing a rolling state of a tire, tire model deformation calculation step ST02 which calculates deformation of the tire model equivalent to one lap of tire rolling when the tire is grounded, tire part model acquisition step ST03 which acquires a tire part model for analyzing a part of the tire model, tire part model deformation calculation step ST04 which calculates deformation of the tire part model on the basis of the deformation of the tire model, crack progress model generation step ST07 which generates a crack progress model which defines a base point of the crack on the tire part model and crack progress analysis step ST08 which analyzes crack progress by calculating the deformation of the crack progress model on the basis of the deformation of the tire part model.SELECTED DRAWING: Figure 2

A system for measuring an internal pressure of a tire can include processing circuitry and memory coupled to the processing circuitry. The memory can have instructions stored therein that are executable by the processing circuitry to cause the processing circuitry to perform operations. The operations can include determining an area of a contact patch of the tire on a drive over surface. The operations can further include determining a load on the tire. The operations can further include determining the internal pressure of the tire based on the load on the tire and the area of the contact patch.

The tire health estimation system and method includes aggregating model generation data over time and iteratively generating a tire health model based thereon. The model generation data correlates various combinations of a first set of input values ​​for a given type of tire to each of the various tire health variables for each of the various tire components. A second set of input values ​​is measured and / or determined for the actual tire and an appropriate model is selected for the at least one tire health variable and the at least one tire component based on the second set. Each tire health variable is estimated for the tire component via the selected model and based on the second set of input values, and an output signal is generated corresponding to the tire health based on a comparison of the estimated tire health variables.

The invention relates to the technical field of tire performance detection, and discloses tire wear resistance detection equipment for new energy automobile production, the tire wear resistance detection equipment comprises a mounting bottom plate for supporting the tire wear resistance detection equipment for new energy automobile production, the top of the mounting bottom plate is provided with an equipment main body, and the equipment main body comprises a workbench, the workbench is fixedly connected to the top of the mounting bottom plate and used for providing power for normal operation of the tire wear resistance detection equipment for new energy automobile production, and the processing table is fixedly connected to the top of the workbench and used for carrying out wear resistance testing on tires. And in the testing process, the device is matched with subsequent components to simulate the actual use environment of the tire, so that the detection result of the device better fits the actual use condition, the accuracy of the detection result of the device is improved, the device is convenient to use by a user, and the device has the advantages of improving the accuracy of automobile tire detection by the device, facilitating the use by the user and the like.

The invention relates to a method for identifying a wheel to which each tire pressure detector belongs. The method comprises the following steps of: calculating a rotating speed value of a corresponding wheel by each tire pressure detector; the automobile electronic control unit reads the information of the ABS gear of each wheel; each tire pressure detector sets the same target angle position, calculates the time value required for reaching the target angle position according to the rotating speed value of the corresponding wheel, and wirelessly transmits a packet of the calculated time value to the automobile electronic control unit; and according to the time values transmitted by the tire pressure detectors, when the time value transmitted by any tire pressure detector arrives, the automobile electronic control unit reads the corresponding tooth value of the ABS gear of each wheel and the target angle position, and operates the numerical control unit to identify the wheel to which each tire pressure detector belongs.

An information processing device acquires a travel route to a destination, acquires a satellite image captured by an artificial satellite, the satellite image being an image of a place corresponding to the travel route, estimates an amount of solar radiation on the travel route based on the satellite image, and notifies the user when the amount of solar radiation is equal to or greater than a threshold.

The invention discloses a self-repairing tire after-puncture healing ability test display device, which comprises a test board, a pressurization cover body, an auxiliary pressing assembly, a centering support assembly and a puncture assembly, and is characterized in that the pressurization cover body is arranged above the test board in a lifting manner, the pressurization cover body is connected with a pressurization assembly, the auxiliary pressing assembly is connected with the pressurization cover body, and the centering support assembly is connected with the puncture assembly; the auxiliary pressing assembly comprises pressing rollers symmetrically distributed on the two sides of the lower portion of the pressurizing cover body, the auxiliary pressing assembly is used for being matched with descending of the pressurizing cover body to press and flatten the inner wall of the to-be-detected tire so that the pressurizing cover body can be attached to the inner wall of the to-be-detected tire to form a sealed space, and the centering supporting assembly is arranged below the pressurizing cover body. The puncture assembly is arranged below the test board and comprises a puncture needle, a puncture opening is formed in the center of the surface of the test board, and the puncture needle is arranged at the puncture opening in a liftable mode. The invention belongs to the technical field of tire performance detection, and particularly relates to a device for testing and displaying the healing capacity of a self-repairing tire after puncturing and rolling.

A tire inspection assembly includes a spindle and a clamping mechanism. The tire inspection assembly generally functions to mount a tire and allow for the inflation thereof to perform a test on the mounted tire. The tire inspection apparatus generally offers more robust centering, higher stiffness versus loads, and greater elimination of variable clearances that can otherwise impede repeatability.

The utility model discloses an automobile front and rear wheel sensor performance test bench, which relates to the field of sensors and comprises a workbench, fixing rods are mounted at the front end and the rear end of the workbench, inclined blocks are mounted at the upper ends of the fixing rods, a bearing table is mounted at the upper end of the workbench, and a baffle plate is mounted on the inner wall of the bearing table. A sensor is installed in the bearing table, a sensing connecting line is installed at one end of the sensor, and an integrated frame is installed above one end of the sensing connecting line. Through the arrangement of the workbench, the bearing table, the sensor, the sensing connecting line, the integrated frame and the terminal display, after a tire of a vehicle stops on the bearing table, data statistics is carried out through the sensor installed on the surface of the bearing table, and data statistics and transmission are carried out through the integrated frame through the sensing connecting line; and the performance of the tire sensor is detected through the installed terminal display.