4110results about "Tyre measurements" patented technology

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.

The invention relates to a pneumatic vehicle tire comprising a tread with profile positives delimited by grooves, including profile positives which are provided with sipes, which in plan view run at least in certain portions at an angle of 0° to 50° to the axial direction and have a width of 0.4 mm to 1.6 mm and a depth at the deepest point that is at least the profile depth reduced by 4.5 mm and at most 100% of the profile depth, with the sipes in each case being involved in forming at least one wear indicator. The wear indicator is formed by a sipe portion of the sipe which in plan view has the form of a sun symbol or a snowflake symbol.

To provide a wheel monitoring system that can detect theft of wheel, tire change or the like while suppressing electrical power consumption due to transmission of information by a tire sensor.SOLUTION: A wheel monitoring system includes a tire sensor 2. The tire sensor 2 determines that wheels 10a-10d are stollen when an acceleration sensor 22 detects a predetermined acceleration change while a vehicle 10 is in a parking state. The tire sensor 2 determines that there is a possibility that tire rotation or change has been carried out when the acceleration sensor 22 detects a predetermined acceleration change while the vehicle 10 is in a stopping state.SELECTED DRAWING: Figure 1

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 relates to the field of sensor activation, in particular to a tire pressure sensor activation method and device, equipment and a storage medium. The method comprises the following steps: acquiring vehicle running state monitoring parameters and vehicle driving monitoring images in real time based on a multi-sensor array; vehicle vibration time-frequency analysis is carried out on the vehicle running state monitoring parameters, vehicle vibration situation mining is carried out, and a vehicle vibration situation curve is constructed; road object recognition is carried out on the vehicle driving monitoring image based on the vehicle vibration situation curve, real-time road condition scene structure rendering is carried out, and a real-time road condition scene model is constructed; obtaining a historical behavior log of the vehicle; carrying out multi-time-point vehicle position calculation on the vehicle historical behavior log, and carrying out dynamic vehicle movement track reconstruction so as to construct a historical vehicle dynamic track; and performing dynamic behavior feature analysis on the historical vehicle dynamic trajectory, and constructing a personalized driving portrait of the vehicle owner. According to the invention, efficient and rapid tire pressure sensor activation is realized.

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 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.

The invention belongs to the field of aircraft wireless temperature and pressure sensors, and relates to a multi-redundancy aircraft wireless temperature and pressure sensor and a control method. The sensor comprises a multi-redundancy pressure sensitive assembly, a signal conditioning circuit, a Bluetooth transceiver module, a solid battery, a rear cover, a support and an outer cylinder. The pressure-sensitive assembly is welded to one end of the outer cylinder. The support is welded to the pressure-sensitive assembly. The Bluetooth transceiver module, the signal conditioning circuit and the solid battery are fixed on the bracket; the rear cover is in threaded connection with the outer cylinder; the pressure sensitive assembly is connected with an inner cavity of a tire through a pipeline and transmits pressure data to the signal conditioning circuit, and after the temperature measuring module measures the temperature, temperature and pressure signals are conditioned and calculated and then sent to a ground terminal through the Bluetooth receiving and transmitting module.

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 discloses a tire pressure real-time monitoring method and system based on a wireless sensor, and the method comprises the steps: 101, collecting tire pressure data, and carrying out the filtering processing of the tire pressure data; step 102, carrying out data decoding, verification and formatting on the tire pressure data subjected to the filtering processing; dynamically adjusting the frequency of data acquisition according to the driving state of the vehicle; step 103, performing cross validation and fusion on data acquired by different sensors, and taking the fused data as input of machine learning; and 104, historical tire pressure data are analyzed according to the fused tire pressure data through a machine learning algorithm, a tire pressure model is established, the tire pressure model comprises the relation that the tire pressure changes along with temperature, load and vehicle speed factors, and when the tire pressure data collected in real time deviates from a model prediction value and exceeds a preset threshold value, an alarm is sent to a driver in time. By the adoption of the technical scheme, the accuracy, reliability and real-time performance of tire pressure monitoring are improved.

The invention discloses an intelligent monitoring method and device for tire wear of an automatic driving vehicle. The method comprises the steps that road environment data, driving behavior data and tire data are collected through a vehicle sensor; building tire loss characteristics according to the road environment data, the driving behavior data and the tire data; judging whether the road environment data or the driving behavior data is changed or not, and if yes, obtaining the running time of the vehicle under the tire loss characteristics; and obtaining a tire loss value through a preset loss model according to the tire loss characteristics and the running time. Therefore, when the road environment data or the driving behavior data of the vehicle change in the driving process, the corresponding tire loss value is obtained through the loss model according to the tire loss characteristics and the running time of the vehicle in the unchanged tire loss characteristics, so that the tire loss can be accurately evaluated after the vehicle passes through the road section.

The present disclosure provides a protective enclosure for electronic systems. The enclosure comprises a polymer-containing matrix and a metamaterial incorporated into the matrix. The metamaterial is tuned to a specific permittivity or permeability to absorb or reflect a particular frequency. The protective enclosure may be used to create a safe inner environment for electronic components while facilitating uninterrupted wireless communications to / from the outer environment. Additionally, the protective enclosure may be used to protect against electromagnetic interference. In particular, shielding metamaterials are configured individually or in combination to specifically shield (via reflection, absorption, etc.) against relatively wide bands of electromagnetic frequencies, while transparent metamaterials are configured specifically to pass electromagnetic signals within narrow bands of frequencies. This new approach resolves and vastly improves current shield solutions, such as Faraday cages. For example, tuned metamaterials may be configured across a variety of preconfigured frequencies, and can be constructed of lightweight materials.

The invention discloses a vehicle-mounted tire pressure sensor rapid programming and automatic positioning method and related equipment, and the method comprises the following steps: respectively transmitting low-frequency programming signals to a preset number of tire pressure sensors; controlling a tire pressure sensor to transmit a high-frequency response signal to a tire pressure receiver; writing the high-frequency response signal into a program code corresponding to the tire pressure sensor, and generating a one-to-one corresponding unique identity; respectively transmitting low-frequency positioning signals to a preset number of tire pressure sensors; generating status words in one-to-one correspondence according to a preset corresponding relation and the unique identity; a preset number of tire pressure sensors are controlled to send corresponding status words to a tire pressure receiver; controlling the tire pressure sensor to identify the status word to obtain corresponding real-time pressure data, and determining position information corresponding to the tire pressure sensor according to the unique identity; and displaying the real-time pressure data and the position information corresponding to the preset number of tire pressure sensors in a preset display screen. The method is used for improving the programming efficiency and the positioning accuracy of the tire pressure sensor.

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.

Embodiments relates to systems and methods to calculate a tire pressure scheme to be utilized by a tire of a vehicle during a trip, communicate a command to the tire pressure control apparatus, to adjust tire pressure of a tire based on the tire pressure scheme, detect a problem encountered in adjusting the tire pressure of the tire based on the tire pressure scheme, generate an alert regarding the problem via a driver assistance interface, and recommend an action to be taken to mitigate the problem.

The invention discloses a tire pressure health state prediction method based on multi-source data, comprising the following steps: acquiring multi-source data including tire pressure sensor data, vehicle driving data, environment temperature data and historical tire pressure data; the obtained tire pressure sensor data, the vehicle driving data, the environment temperature data and the historical tire pressure data are preprocessed; feature vectors in the tire pressure sensor data, the vehicle driving data, the environment temperature data and the historical tire pressure data are extracted and fused; and training the prediction model by adopting a machine learning algorithm, and outputting a tire pressure health state prediction result. The method has the following advantages and effects that the tire pressure state can be monitored in real time, the environment temperature, the vehicle driving condition and historical data can be comprehensively considered, multi-source data fusion and an intelligent algorithm are applied to tire pressure health state prediction, the adaptability and stability of a prediction model are improved, and the prediction efficiency is improved. And comprehensive safety guarantee is provided for the driver.

Embodiments relates to systems and methods to calculate a tire pressure scheme to be utilized by a tire of a vehicle during a trip, communicate a command to the tire pressure control apparatus, to adjust tire pressure of a tire based on the tire pressure scheme, detect a problem encountered in adjusting the tire pressure of the tire based on the tire pressure scheme, generate an alert regarding the problem via a driver assistance interface, and recommend an action to be taken to mitigate the problem.

The present invention provides an indirect tire pressure monitoring method and system suitable for complex driving working conditions, the method comprising: S1, acquiring independent tire speed timestamp signals of the tires of a vehicle, and, on the basis of the tire speed timestamp signals, calculating real-time rolling features of the tires; S2, acquiring a real-time whole-vehicle monitoring signal, identifying, on the basis of a change in a status bit of a specific signal value in the whole-vehicle monitoring signal or a change in the regularity of the signal, current working conditions of the vehicle, and performing, on the basis of the current working conditions, analysis disabling or compensation on the real-time rolling features so as to correct abnormal changes in the rolling features of the tires caused by the current working conditions; and S3, on the basis of the correspondence between the rolling features of the tires and tire pressures and on the basis of the corrected rolling features of the tires, calculating tire pressures. According to the present invention, the accuracy of tire pressure monitoring in complex working conditions is improved, and false alarms or missed reporting by the indirect tire pressure monitoring system are reduced in the actual environment of vehicle use.

The invention provides an automobile tire pressure monitoring method and system based on multi-sensor fusion, and the method comprises the steps: obtaining the temperature, pressure and vibration parameters of a working environment of a sensor module, building a multiple regression analysis model with the temperature, pressure and vibration as independent variables and the sensor output precision as a dependent variable, and obtaining a sensor performance degradation mathematical model; for deformation and vibration interference in the high-speed running process of a tire, a self-adaptive noise elimination algorithm based on the minimum mean square error criterion is adopted, preprocessing such as filtering and smoothing is carried out on original data of a sensor, and the signal-to-noise ratio and stability of the data are improved; a general data analysis module is designed for data formats and protocol differences of different types of sensors, automatic identification and conversion of heterogeneous sensor data are achieved by configuring a sensor data format template, and the data are mapped to a unified data model.

A method for managing pressure in one or more tires installed on a vehicle includes: determining, by an electronic control unit, a pressure parameter value based on one or more measured pressures; and commanding, by the electronic control unit and based on the pressure parameter value, at least one control valve to an open position to conduct fluid from an air source and to inflate the one or more tires.

The invention provides a vehicle tire pressure sensor matching method and device, a vehicle and a storage medium. The method comprises the following steps: when a vehicle is in a turning state, obtaining a first classification result according to centripetal acceleration sent by each tire pressure sensor; if the vehicle has two tires, a second classification result is obtained according to the X-axis acceleration sent by each tire pressure sensor; in the wheel rotating process, a third classification result is obtained according to the gravity acceleration Z-axis component sent by each tire pressure sensor and the wheel rotating tooth number sent by the vehicle speed sensor corresponding to each tire; and determining a matching result of the tire pressure sensor of the vehicle according to at least one of the first classification result, the second classification result and the third classification result. Automatic matching of the tire pressure sensors can be achieved, a special tool is not needed, a user does not need to drive a vehicle to a maintenance point, the tire does not need to be deflated, all the tire pressure sensors can be matched at the same time at a time, and efficiency is high.

The invention relates to a Bluetooth-based tire pressure sensor positioning method. The tire pressure sensor positioning method comprises the steps that S1, Bluetooth connection is established between a vehicle ECU and a tire pressure sensor, and clock synchronization is established on the vehicle ECU and the tire pressure sensor; s2, the tire pressure sensor periodically sends a positioning data packet to the vehicle ECU, the positioning data packet at least comprises backspacing time, and the backspacing time is used for representing the moment when the tire pressure sensor reaches the reference point; s3, the vehicle ECU calculates the corresponding moment when the vehicle ECU side reaches the reference point based on the backspacing time; s4, the vehicle ECU carries out deviation degree statistics on the obtained ABS information based on the corresponding moment, and a tire pressure sensor is positioned according to a statistical result; and S5, if the vehicle ECU positions the tire pressure sensor, the vehicle ECU instructs the tire pressure sensor to stop sending the positioning data packet. The tire pressure sensor can be effectively positioned, and the service life of the tire pressure sensor can be prolonged.

A tire monitoring system includes an information acquisition unit, a temperature determination unit, and an inflation pressure determination unit. The information acquisition unit acquires measurement data by an inflation pressure sensor and a temperature sensor. The temperature determination unit determines whether the measurement data for temperature is higher than a predetermined threshold value based on the measurement data acquired by the information acquisition unit. The inflation pressure determination unit determines, when the temperature determination unit determines that the temperature is higher than the predetermined threshold value, whether a high temperature state in the tire is caused by a factor on a vehicle side or a tire side based on the measurement data for inflation pressure.

The invention discloses a tire pressure anomaly detection method and device, which can be applied to the technical field of vehicles, and comprises the following steps: determining the ratio of the environment temperature to the current temperature of each tire; determining an underpressure alarm threshold value corresponding to each tire according to the product of each specific value and a recommended air pressure value of the whole vehicle, determining a tire pressure value corresponding to each tire according to the inflation pressure recommended by a vehicle manufacturer for the vehicle model according to the expected application condition of the given vehicle, and determining an underpressure alarm threshold value corresponding to each tire according to the tire pressure value. And comparing the tire pressure value of each tire with the corresponding under-pressure alarm threshold value, and if the tire pressure value is greater than or equal to the under-pressure alarm threshold value, determining that the tire pressure of the corresponding tire is abnormal. According to the method, the environment temperature and the tire temperature are combined for calculation, the environment temperature is considered, the influence of the external environment temperature on the tire pressure can be reduced, the accuracy of tire pressure anomaly detection can be improved, potential safety hazards are reduced, and the experience feeling of a user is improved.

A system includes a valve coupled to a source of compressed air and a wheel hub. The wheel hub includes a stationary element associated with a wheel of a vehicle, a rotary element configured to rotate with the wheel, a seal therebetween, and a port arranged in the rotary element, wherein a flow path extends from the source to valve, the valve to the seal, the seal to the port, and the port to the wheel. A method includes measuring a pressure of a tire based on a sensor signal, where the tire is mounted to a wheel coupled to a wheel hub of a vehicle, determining whether to inflate or deflate the tire based on the pressure, generating a control signal to control the valve coupled to the tire to achieve an open position, and monitoring the pressure of the tire while the valve is in the open position.

A tire fitting system and a method for discriminating between tire sensors of a wheel to be assembled on a vehicle is provided. The tire fitting system comprising a processing circuitry configured to receive an identity of an RFID tag mounted on a rim, or in a tire, of a wheel. The processing circuitry is also configured to receive, from the at least two tire sensors, tire sensor signals comprising status information indicating how their respective tire sensor was activated. The processing circuitry is further configured to determine which identity of the at least two tire sensors is to be associated with the identity of the RFID tag based on the status information.

The invention relates to a tire pressure monitoring method and system, a storage medium and a vehicle, and belongs to the technical field of tire pressure monitoring. Performing image processing on the tire grounding state image to obtain a grounding contour, and fitting the grounding contour into an ellipse to obtain long axis and short axis parameters of the ellipse; calculating a deformation ratio based on long-axis and short-axis parameters of the ellipse; calculating the current tire pressure through a pre-constructed tire pressure calculation model based on the deformation ratio; and judging whether the slow air leakage phenomenon exists in the tire according to the current tire pressure and the standard tire pressure. According to the method, the tire grounding state image can be obtained in real time without adding extra hardware, the cost is reduced by analyzing the tire deformation and judging the current tire pressure state, the influence of low temperature is considered, the slow air leakage condition can be detected, and the monitoring precision is improved.

A tyre monitoring sensor is disclosed comprising an ultra-wideband, UWB, device, wherein the UWB device is configured to be mounted on a tyre and to be operable in at least a first mode, a second mode, and a third mode; wherein the first mode is a sensing mode, in which the UWB device is operable to determine a value of a physical property of the tyre; wherein the second mode is a communication mode, in which the UWB device is operable to communicate the value to a control unit; wherein the third mode is a ranging mode, in which the UWB device is operable to localise the UWB device relative to a controller node. Associated methods and systems are also disclosed.