1817results about "Vehicle tyre testing" patented technology

A disclosed water droplet sensing system and methods using split-ring resonators, which may be embedded within a material. In use, a component includes at least one split-ring resonator (SRR) which may be embedded within a material of the component. The at least one SRR may be formed from a composite material. Additionally, the at least one SRR may be configured to form a signal that is correlated with a concentration of water proximate to the at least one SRR. In some aspects, each SRR may resonate at a first frequency in response to an electromagnetic ping when the material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the material is in a second state. A resonant frequency of the material may be based on physical characteristics of the material (including fluid accumulation on the material).

The invention discloses a tire wear diagnosis method, device and equipment and a storage medium, and the method comprises the steps: generating a tire wear calculation model based on obtained key factors affecting tire wear, wherein the key factors comprise vehicle driving mileage, historical driving road condition information, driving habits, vehicle tire pressure and four-wheel positioning information; and calculating a current tire wear coefficient according to the tire wear calculation model, and diagnosing tire wear by using the current tire wear coefficient. The abnormal condition of tire wear can be effectively identified, a terminal client is reminded of the tire wear state of the vehicle, and the use safety of the vehicle tire is ensured.

A disclosed airborne vehicle includes split-ring resonators (split ring resonators), which may be embedded within a material. Each split ring resonator may be formed from a three-dimensional (3D) monolithic carbonaceous growth and may detect an electromagnetic ping emitted from a user device. Each split ring resonator may generate an electromagnetic return signal in response to the electromagnetic ping. The electromagnetic return signal may indicate a state of the material in a position proximate to a respective split ring resonator. In some aspects, each may resonate at a first frequency in response to the electromagnetic ping when the material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the material is in a second state. A resonant frequency of the 3D monolithic carbonaceous growth may be based on physical characteristics of the material.

A transportable vehicle enclosure for inspecting vehicles is formed as a mono-block suitable for loading onto a transporter and unloading from a transporter. The enclosure includes side, front, rear, ceiling and floor portions, at least one of the portions being configured to allow vehicular assess whereby, in use, a vehicle maybe placed within the enclosure. The enclosure further includes a plurality of cameras integrated into or on a plurality of proportions for imaging each side of the vehicle when a vehicle is located in the enclosure.

A disclosed apparatus includes sensors incorporated into adhesive material. In use, an apparatus may comprise an adhesive material and at least one split-ring resonator (SRR) disposed on or in the adhesive material. Additionally, the at least one SRR is formed from a carbon-containing material, and the adhesive material is a non-elastomeric material or a semi-rigid material. In some aspects, each SRR may resonate at a first frequency in response to an electromagnetic ping when the adhesive material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the adhesive material is in a second state. A resonant frequency of the adhesive material may be based on physical characteristics of the adhesive material.

A disclosed leaky coaxial resonant sensor system and methods. In use, the system includes at least one split-ring resonator (SRR) embedded within a material of the component. The at least one SRR is formed from a composite material. Additionally, the at least one SRR is configured to resonate at a first frequency in response to an interrogation signal from a leaky coaxial cable antenna. In some aspects, each SRR may resonate at a first frequency in response to an electromagnetic ping when the composite material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the composite material is in a second state. A resonant frequency of the composite material may be based on physical characteristics of the composite material.

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.

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.

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.

Resonant sensors for environmental health risk detection are disclosed. A mechanical member may include at least one meso-scale or micro-scale resonator disposed on a surface of the mechanical member. Additionally, the at least one meso-scale or micro-scale resonator may include a plurality of first carbon particles configured to uniquely resonate in response to an electromagnetic ping based at least in part on a concentration level of the first carbon particles within the at least one meso-scale or micro-scale resonator. Further, the at least one meso-scale or micro-scale resonator may be configured to resonate at a first frequency in response to the electromagnetic ping when the mechanical member is in a first state, and may be configured to resonate at a second frequency in response to the electromagnetic ping when the mechanical member is in a second state.

The invention provides a multi-dimensional detection system for tire cracks, and belongs to the technical field of crack detection. The parameter acquisition module is used for configuring an image system to acquire original image data of a target tire and configuring a sensor system to acquire original physical data of the target tire; the preprocessing module is used for preprocessing the original image data and the original physical data to obtain standard data of all parameter types of the target tire; the feature extraction module is used for obtaining parameter features by combining the standard data of any parameter type according to a feature algorithm; the risk module is used for carrying out feature fusion on the parameter features of all the parameter types to obtain multi-dimensional features, and inputting the multi-dimensional features into a crack risk model to obtain a crack risk score of the tire; and the verification module is used for verifying the accuracy of crack detection of the target tire and optimizing the crack risk model. And through multi-dimensional detection, the tire crack identification precision is improved, and the safety and reliability are ensured.

The invention discloses a tire performance testing method and device. The method comprises the following steps: acquiring the initial depth and the post-grinding depth of each pattern groove on the tread of a target tire before and after grinding, and the initial temperature and the post-grinding temperature of each pattern block before and after grinding; determining an initial groove depth uniformity parameter, an initial temperature uniformity parameter, an after-grinding groove depth uniformity parameter and an after-grinding temperature uniformity parameter of the tread of the target tire before and after grinding based on the parameters; according to the initial groove depth uniformity parameter, the initial temperature uniformity parameter, the ground groove depth uniformity parameter and the ground temperature uniformity parameter, whether grinding of the target tire is qualified or not is evaluated; and if the grinding is qualified, testing the performance of the ground target tire. The technical problem that the accuracy of the performance test result of the polished tire is poor as the wear condition of the tread cannot be really reflected only according to the depth of the pattern groove is solved.

A tire inspection support apparatus includes: a first detection unit that detects a first area including a cracked part candidate in a tire through first image processing performed on a photographed image of the tire; a generation unit that generates an image to be processed obtained by extracting a partial image corresponding to the first area from the photographed image; a second detection unit that detects a second area showing the cracked part from the first area through second image processing performed on the image to be processed; and a calculation unit that calculates an index value for the cracked part in the tire based on the second area.

The invention provides a tire test analysis and reliability evaluation method based on a damage evolution model, and the method comprises the steps: obtaining data: obtaining 12 mechanical channel data of forces and displacements of a tire in three directions and moments and rotation angles of three axes; identifying a periodic tread jitter value and a sidewall movement value of the tire as deformation channel data; acquiring a tire temperature field as temperature channel data; data analysis: analyzing the reliability of the tire based on the mechanical signal, the visual deformation signal and the temperature field signal; and reliability prediction: judging the tire damage probability based on reliability analysis results of the mechanical signal, the visual deformation signal and the temperature field signal.

A method of determining a wear of a tire, which may include, using a computing device operating a processor: based on signals from one or more sensors of a vehicle, determining a plurality of tire parameters of a tire; based on at least a portion of the tire parameters, determining a normalized rolling radius of the tire, the normalized rolling radius being an effective rolling radius of the tire under a zero rotational speed, a zero load or both; and based on a change in the normalized rolling radius of the tire over a period of time, determining an average wear value of the tire.

The present application relates to the technical field of passenger car brake noise testing, and more specifically, to a passenger car brake noise testing device and method with suspension support and road surface feedback. The device includes a suspension support structure, a road surface feedback structure, a brake inertia platform, a microphone, and a test unit. The present application installs the brake disc and the brake caliper to be tested through the suspension support structure to provide support force for the wheel. The road surface simulation device is in contact with the tire to simulate the actual road surface, provide friction force for the tire and support the wheel; the brake inertia platform is connected to the tire to provide rotational inertia for the tire. The microphone is located around the wheel to collect noise during braking; the test unit is used to obtain test results based on the noise collected by the microphone. The present application achieves the simulation of the actual driving state of the vehicle and the testing of the brake noise of the passenger car.

The invention discloses a tire wear life prediction method and device. The method comprises the following steps: acquiring first driving working condition data and first tire parameters of a target tire under a target driving working condition; a pre-trained tire wear prediction model is called to analyze the first driving condition data and the first tire parameters, a first wear data sequence of the target tire in a future preset time period is obtained, the tire wear prediction model is a long short-term memory (LSTM) network model, and a second wear data sequence of the target tire in the future preset time period is obtained; the tire wear prediction model is obtained by training driving condition data, tire parameters and a time-based wear data sequence of different tires under different driving conditions; and determining the wear life of the target tire under the target driving condition according to the first wear data sequence. The technical problem that it is difficult to efficiently and accurately predict the wear life of the tire in related schemes is solved.

The invention discloses a wheel deviation resistance energy consumption monitoring method and device based on a new energy automobile, belongs to the technical field of tires of new energy automobiles, and aims to solve the problems that online monitoring is difficult to realize in the running process of an existing wheel deviation resistance monitoring method of the new energy automobile, and the energy consumption is low. And extra energy consumption caused by wheel deviation resistance is also easy to influence the prediction of the remaining mileage. The method comprises the steps that tire three-dimensional modeling sensing based on linear driving is conducted on the wheel running state of the new energy automobile, and abnormal wheel deviation tires of the new energy automobile are determined; according to geometric characteristics and mechanical characteristics between the tread and the ground, performing characteristic parameter calculation processing on the tread ground contact plane graph under an extrusion area to obtain an abnormal wheel deviation parameter of the abnormal wheel deviation tire; global contact coupling rigidity calculation is carried out on the abnormal wheel deviation parameters, and the tire stress of the abnormal wheel deviation tire is determined; and inputting the tire stress into the tire rolling resistance model to obtain the tire rolling resistance of the tire with abnormal wheel deviation.

The invention relates to the technical field of rubber tire detection, in particular to an air tightness detection device for rubber tire production and a detection method thereof. Comprising a detection platform, and a telescopic groove is formed in the top of the detection platform; and a tire supporting mechanism movably penetrates through the telescopic groove. The tire limiting mechanism is controlled to limit and fix a rubber tire, then the tire supporting mechanism is controlled to be separated from the rubber tire, the detection marking mechanism is controlled to wrap a part of the rubber tire, and then the tire limiting mechanism is controlled to drive the rubber tire to rotate; through the arrangement of the detection marking mechanism, the detection marking mechanism can mark the air leakage position while detecting the surface in the rotation process of the rubber tire, the problems that manual detection wastes time and omission is likely to happen are solved, the detection work efficiency is improved, the air leakage point can be accurately marked, and the detection efficiency is improved. The problem that follow-up repair is inconvenient due to the fact that no mark exists after existing liquid detection is dried is solved, and the using effect of the detection device is improved.

The present invention relates to the field of tire detection technology, and discloses a tire defect detection device based on machine vision, including a workbench, a visual detection component for detecting tires is arranged on the top of the workbench, and the visual detection component includes a first industrial camera for detecting the tire sidewall, a second industrial camera for detecting the outer crown of the tire, and a third industrial camera for detecting the inner crown of the tire. The tire defect detection device based on machine vision can facilitate three groups of industrial cameras to detect the outer surface and inner surface of the tire through the rotation of the tire, thereby improving the detection effect and range of the tire. Through the setting of the extrusion component, the tread of the tire detection area can be squeezed, thereby improving the crack appearance effect on the tire. The extrusion method includes squeezing from the inside to the outside and squeezing from the outside to the inside, thereby improving the detection effect of the inside and outside of the tire.

An apparatus for measuring performance and contact characteristics between a vehicle test wheel (10) and a ground (20), comprising: a motorized test cart (100) configured to move at a specified speed along a guideway (30) attached to the ground (20); a support (200) for the test wheel (10); and a mechanism (300) mounted between the test cart and the support (200) and configured to hold the support so that the test wheel (10) can roll on the ground (20) with the movement of the test cart along the guideway (30); and allow a movement of the support (200) relative to the ground (20) so that the test wheel (10) can be raised relative to the ground (20) or lowered until it contacts the ground; a thrust actuator (310) configured to apply a thrust force (320) between the test cart (100) and the support (200) and cause the support (200) to move toward the ground (20) through the mechanism (300) and to keep the test wheel (10) in contact with the ground (20) so that the wheel exerts a contact force (220) against the ground (20). The mechanism (300) is mounted between the test cart (100) and the support (200) so that the support (200) is cantilevered from the test cart (100) and the test wheel (10) is external laterally from the test cart (100); said test cart (100) comprises transport wheels (110, 120) mounted to make direct contact with the ground without contacting the guideway (30) and on which the test cart (100) rests; the test cart comprises a plurality of sliding constraints (130,140) between the test cart (100) and the guideway (30) configured to counterbalance the test cart (100) relative to the guideway (30) during the application of the thrust force (320) by the thrust actuator (310) and to isolate the application of the contact force (11) from ground contact reactions of the transport wheels (110, 120).

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, and discloses an automobile tire service life prediction method and system, the system comprises a support device, a sliding assembly, a sensor assembly and a control module; the acquisition unit acquires parameter information of the tested tire to determine a downward pressure when the tested tire is in contact with the sliding assembly, controls the driving motor to rotate to acquire vibration data of the tested tire within a preset time, and acquires temperature data of the tested tire based on the infrared thermometer; the processing unit performs normal distribution processing on the vibration data to determine vibration representative data; establishing a temperature distribution diagram according to the temperature data; determining a first life prediction value of the tested tire according to the tread wear; the judgment unit determines a wear evaluation value; and the adjusting unit adjusts the first service life prediction value to obtain a final tire service life prediction value. According to the method, the vibration and temperature anomaly evaluation values are combined with the tread wear data, so that the tire life is dynamically adjusted and predicted, and the prediction precision of the tire life is improved.

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 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.

A control device and a method for estimating a driving range for a vehicle. The method comprises, based on available driving energy for the vehicle, estimating distance to empty taking into account an estimated variation in rolling resistance of the vehicle, wherein said estimated variation in rolling resistance of the vehicle is determined using a predetermined transient rolling resistance model into which transient tire temperature effects on rolling resistance are incorporated.

The invention relates to a whole vehicle road load bench test device and method. A drive axle fixing tool and a control system are additionally arranged on a tire drum test machine; the drive axle fixing tool is provided with a vertical loading system for applying an actual load during a whole vehicle test, a drive axle body with wheels, a power system, a transmission, a transmission shaft, a temperature adjusting system and a transmission control system are assembled to form a to-be-tested sample piece during use, and the drive axle body of the to-be-tested sample piece is connected with the drive axle fixing tool. The wheel is in contact with the dynamometer roller; the control system controls the to-be-tested sample piece and the vertical loading system to operate by using input sample piece parameters and road spectrum information; a loading device of the tire drum testing machine is controlled according to the rotating speed of the dynamometer roller and the compensated rack driving resistance curve, and the driving resistance is adjusted, so that the rack test fits the actual condition, and the test result is ensured to be accurate; the test can be carried out only by providing key vehicle parts, the vehicle model development period is shortened, and the cost is reduced.

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.