CN110962512A - An intelligent monitoring system for automobile tires - Google Patents

An intelligent monitoring system for automobile tires Download PDF

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Publication number
CN110962512A
CN110962512A CN201911341576.3A CN201911341576A CN110962512A CN 110962512 A CN110962512 A CN 110962512A CN 201911341576 A CN201911341576 A CN 201911341576A CN 110962512 A CN110962512 A CN 110962512A
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tire
intelligent
sensor
stress
strain
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高维杰
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Shenzhen Power Supply Bureau Co Ltd
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Shenzhen Power Supply Bureau Co Ltd
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Priority to CN201911341576.3A priority Critical patent/CN110962512A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
    • B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
    • B60C23/0433—Radio signals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/24—Wear-indicating arrangements
    • B60C11/246—Tread wear monitoring systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/06—Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle
    • B60C23/064—Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle comprising tyre mounted deformation sensors, e.g. to determine road contact area

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

本发明涉及一种汽车轮胎智能监测系统，包括：安装于汽车轮胎橡胶体内的多个应力传感器及应变传感器，分别用于采集轮胎所受压力及变形数据；与所述应力传感器及应变传感器电连接的无线发射装置，用于发送所述应力传感器及应变传感器采集的数据；集成在汽车行车电脑的无线接收装置和智能系统，所述无线接收装置用于接收所述无线发射装置发送的所述应力传感器及应变传感器采集的数据，所述智能系统用于根据所述应力传感器及应变传感器采集的数据判断轮胎性能变化。本发明可以智能监控轮胎使用状态，避免轮胎损坏后修理，延长轮胎使用寿命，同时可以使车辆运行更加安全。

Figure 201911341576

The invention relates to an intelligent monitoring system for automobile tires. The wireless transmitting device is used to send the data collected by the stress sensor and the strain sensor; the wireless receiving device and intelligent system integrated in the car trip computer, the wireless receiving device is used to receive the stress sent by the wireless transmitting device. The data collected by the sensor and the strain sensor, the intelligent system is used for judging the tire performance change according to the data collected by the stress sensor and the strain sensor. The invention can intelligently monitor the use state of the tire, avoid repairing after the tire is damaged, prolong the service life of the tire, and at the same time make the vehicle run more safely.

Figure 201911341576

Description

Intelligent monitoring system for automobile tire
Technical Field
The invention relates to the technical field of automobiles, in particular to an intelligent monitoring system for automobile tires.
Background
At present, the automobile industry is rapidly developed, and the automobile industry has important influence on the life of people. The automobile tire is closely related to safe driving of an automobile, but the current automobile tire research direction mainly focuses on the aspects of improving tire materials, increasing anti-skid and anti-wear performance, airless tires, automatic pressurization tires and the like, and when the tire is used for a certain time, the difficulty is difficult to judge how the tire reaches a damage state or which aspect of the tire has a problem. At present, the use state of the tire is generally judged through the phenomena of the abrasion degree of the tire pattern, the damage of the other appearance and the like, and no quantitative judgment standard exists.
Disclosure of Invention
The invention aims to solve the technical problem of providing an intelligent monitoring system for an automobile tire, which can intelligently monitor the performance state of the tire.
In order to solve the above technical problem, the present invention provides an intelligent monitoring system for an automobile tire, comprising:
the stress sensors and the strain sensors are arranged in the rubber body of the automobile tire and are respectively used for acquiring pressure and deformation data of the tire;
the wireless transmitting device is electrically connected with the stress sensor and the strain sensor and is used for transmitting data collected by the stress sensor and the strain sensor;
the intelligent tire performance monitoring system comprises a wireless receiving device and an intelligent system, wherein the wireless receiving device is integrated in an automobile running computer and used for receiving data, collected by the stress sensor and the strain sensor, sent by the wireless transmitting device, and the intelligent system is used for judging tire performance change according to the data collected by the stress sensor and the strain sensor.
Furthermore, the intelligent monitoring system for the automobile tire further comprises a display, wherein the display is electrically connected with the intelligent system and is used for displaying a stress cloud picture or a strain cloud picture of the tire.
Further, the intelligent system is also used for calculating the current tire thickness according to the data collected by the stress sensor and the strain sensor in the following mode:
F＝a×ε·z+c
wherein epsilon represents the deformation of the tire and is the ratio of the strain quantity of the width of the tire to the original width; z represents the tire thickness; f represents the stress of the tire; a is a coefficient; c is a time dependent function.
Further, the intelligent system determines that the tire reaches the ultimate strength and warns when the calculated current tire thickness is less than a predetermined threshold.
Further, the intelligent system is also used for calculating the thickness of the tire according to the tire deformation data, obtaining the relation between the tire deformation and the time according to the tire deformation data at each moment, and judging the tire wear condition according to the relation.
The intelligent monitoring system has the advantages that the using state of the tire is intelligently monitored, the tire is prevented from being repaired after being damaged, the service life of the tire is prolonged, and meanwhile, the vehicle can run more safely.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an intelligent system for an automobile tire according to an embodiment of the present invention.
Fig. 2 is a stress or strain cloud shown in an embodiment of the invention.
Detailed Description
The following description of the embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the invention may be practiced.
Referring to fig. 1, an embodiment of the present invention provides an intelligent monitoring system for an automobile tire, including:
the stress sensors and the strain sensors are arranged in the rubber body of the automobile tire and are respectively used for acquiring pressure and deformation data of the tire;
the wireless transmitting device is electrically connected with the stress sensor and the strain sensor and is used for transmitting data collected by the stress sensor and the strain sensor;
the intelligent tire performance monitoring system comprises a wireless receiving device and an intelligent system, wherein the wireless receiving device is integrated in an automobile running computer and used for receiving data, collected by the stress sensor and the strain sensor, sent by the wireless transmitting device, and the intelligent system is used for judging tire performance change according to the data collected by the stress sensor and the strain sensor.
Specifically, in this embodiment, the stress sensors and the strain sensors are distributed in the tire rubber body and are respectively connected to the wireless signal transmitting device, and data measured by the stress sensors and the strain sensors are transmitted to the wireless receiving device through the wireless signal transmitting device and then transmitted to the intelligent system. The power supply of the stress and strain sensor and the wireless signal transceiver adopts a composite power supply, namely, a storage battery and an intelligent power generation device provide a long-term stable power supply.
Assuming that the tire material is uniform and the mechanical properties are the same (the tires produced by different types of tires by different manufacturers are different, and the embodiment does not perform specific analysis), the tire is subjected to the same force, the deformation is related to the tire strength, and the higher the tire strength is, the smaller the deformation is. When the materials are the same, the tire strength is related to the tire thickness (tire wall thickness in this embodiment), i.e. (1) the tire is subjected to the same magnitude of force F, the thicker the tire thickness z, the smaller the tire deformation epsilon; (2) the greater the thickness z of the tire, the limit of the force F it can withstand when the tire deformation ε is the samemaxThe larger. The expression is as follows: f ═ a × epsilon · z + c, where epsilon represents tire deformation and is the ratio of the amount of strain in the tire width (Δ L) to the original width (L), i.e., ∈ ═ Δ L/L, dimensionless; z represents the tire thickness; f represents the stress of the tire; a is a coefficient; c is a time-dependent number, and the value of c gradually decreases as time increases, and if the influence of time is not considered, c is 0.
The intelligent system receives the stress and the tire pressure and deformation data acquired by the strain sensor through the wireless receiving device and processes the data, and the pressure cloud picture and the strain cloud picture are visually displayed through the display, as shown in fig. 2. The intelligent system can analyze the tire performance change condition by comparing with the historical data of the initial state.
For example, assuming that a tire thickness z is 100 units, a force F of 100 units under normal conditions produces a deformation of 50 units, and a force F of 100 units under extreme conditions produces a deformation of 100 units, when the extreme strength of the tire material is reached, the intelligent system warns.
Application scenario 1: the tire wear was analyzed. When the tire thickness z changes, the pressure and strain change accordingly. When the tire becomes thinner due to wear, the tire deformation epsilon increases and the tire internal pressure will change, as compared with the tire in the initial state (new tire); and comparing the stress and the strain of different positions in the same state, so that the wear degrees of different positions can be judged. When the tire thickness z is reduced to 50% of the initial state, 100 units of deformation epsilon normally occurs under the force F of 100 units, and at the moment, the intelligent system judges that the tire reaches the ultimate strength and is in danger, and then a warning is given.
Application scenario 2: and monitoring the tire pressure of the tire. When the tire pressure is too large or too small, the safety of the tire and the vehicle is affected, and the deformation of the tire and the change of the rubber body pressure of the tire are reflected. Generally, when the tire pressure is large, the tire has large expansion volume, uniform deformation and small and concentrated ground contact area; when the tire pressure is small, the tire has small expansion volume, uneven deformation and large and diffused contact area.
Application scenario 3: and analyzing the damage cause of the tire. When the force F is unchanged, the intelligent system can calculate the thickness z of the tire by monitoring the deformation epsilon of the tire, obtain the relation between the deformation epsilon of the tire and time through epsilon data at each moment, and judge the wear condition of the tire according to the relation. Tire wear conditions are mainly classified into a long-term wear type and a short-term cut type, and a tire strain of the long-term wear type is uniform over a long period of time, while a tire strain of the short-term cut type is severe over a short period of time.
Application scenario 4: and analyzing the road condition. The road surface on which the vehicle travels can be roughly divided into three conditions of a highway, a mountain road and a sand road. The road is flat and hard, and the stress and strain at the similar position of the tire are similar along with the change of time; the mountain road is rugged and uneven, and has a lot of stones, and the stress on each position of the tire is inconsistent, so the stress and the strain change irregularly along with time; the stress condition of the tire in the silt road surface is similar to that of a road, but because the contact area of the tire and the road surface is large, the deformation range of the tire is large, meanwhile, the tire in the silt road has a slipping phenomenon, and the difference can be found by comparing the rotating speed of the tire with the actual speed.
Application scenario 5: tire maintenance and replacement analysis. Judging whether the wall thickness of the tire is in a safe range by monitoring the stress and the strain of the tire, and giving a suggestion of whether to replace the tire; providing a suggestion to maintain the tire by analyzing the tire pressure and the tire wear degree of the tire; according to the analysis of road conditions and the analysis of wear reasons, the installation of the adaptive special type of tires is recommended.
The intelligent monitoring system has the advantages that the using state of the tire is intelligently monitored, the tire is prevented from being repaired after being damaged, the service life of the tire is prolonged, and meanwhile, the vehicle can run more safely.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.

Claims (5)

1.一种汽车轮胎智能监测系统，其特征在于，包括：1. an automobile tire intelligent monitoring system, is characterized in that, comprises: 安装于汽车轮胎橡胶体内的多个应力传感器及应变传感器，分别用于采集轮胎所受压力及变形数据；Multiple stress sensors and strain sensors installed in the rubber body of the automobile tire are used to collect the pressure and deformation data of the tire respectively; 与所述应力传感器及应变传感器电连接的无线发射装置，用于发送所述应力传感器及应变传感器采集的数据；a wireless transmitting device electrically connected with the stress sensor and the strain sensor for transmitting data collected by the stress sensor and the strain sensor; 集成在汽车行车电脑的无线接收装置和智能系统，所述无线接收装置用于接收所述无线发射装置发送的所述应力传感器及应变传感器采集的数据，所述智能系统用于根据所述应力传感器及应变传感器采集的数据判断轮胎性能变化。A wireless receiving device and an intelligent system integrated in a car trip computer, the wireless receiving device is used for receiving the data collected by the stress sensor and the strain sensor sent by the wireless transmitting device, and the intelligent system is used for according to the stress sensor And the data collected by the strain sensor to judge the change of tire performance. 2.根据权利要求1所述的汽车轮胎智能监测系统，其特征在于，还包括显示器，与所述智能系统电连接，用于显示轮胎的应力云图或应变云图。2 . The intelligent monitoring system for automobile tires according to claim 1 , further comprising a display, which is electrically connected to the intelligent system and used to display a stress cloud map or a strain cloud map of the tire. 3 . 3.根据权利要求1所述的汽车轮胎智能监测系统，其特征在于，所述智能系统还用于根据所述应力传感器及应变传感器采集的数据按下述方式计算当前轮胎厚度：3. The intelligent monitoring system for automobile tires according to claim 1, wherein the intelligent system is also used to calculate the current tire thickness in the following manner according to the data collected by the stress sensor and the strain sensor: F＝a×ε·z+cF=a×ε·z+c 其中，ε表示轮胎变形，是轮胎宽度的应变量与原来宽度的比值；z表示轮胎厚度；F表示轮胎受力大小；a为系数；c为和时间有关的函数。Among them, ε represents the deformation of the tire, which is the ratio of the strain of the tire width to the original width; z represents the thickness of the tire; F represents the force on the tire; a is a coefficient; c is a function related to time. 4.根据权利要求3所述的汽车轮胎智能监测系统，其特征在于，所述智能系统在计算出的当前轮胎厚度小于预定阈值时，判定轮胎达到极限强度，并进行警告。4 . The intelligent monitoring system for automobile tires according to claim 3 , wherein when the calculated current tire thickness is less than a predetermined threshold, the intelligent system determines that the tire reaches the limit strength and gives a warning. 5 . 5.根据权利要求1所述的汽车轮胎智能监测系统，其特征在于，所述智能系统还用于根据轮胎变形数据计算出轮胎厚度，通过每个时刻的轮胎变形数据获取轮胎变形与时间的关系，并据此判定轮胎磨损情况。5. The intelligent monitoring system for automobile tires according to claim 1, wherein the intelligent system is also used to calculate the tire thickness according to the tire deformation data, and obtain the relationship between tire deformation and time through the tire deformation data at each moment , and determine tire wear accordingly.
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CN111361365A (en) * 2020-04-10 2020-07-03 中国电子科技集团公司第四十八研究所 A tire condition monitoring module
CN112078309A (en) * 2020-08-25 2020-12-15 惠州华阳通用电子有限公司 Tire air leakage detection method and system
CN112223962A (en) * 2020-12-08 2021-01-15 北京航空航天大学 An intelligent vehicle control system and method based on pavement tactile perception
CN111994066B (en) * 2020-10-29 2021-01-29 北京航空航天大学 Intelligent automobile sensing system based on intelligent tire touch sensing
CN112622536A (en) * 2020-12-25 2021-04-09 中国农业大学 Vehicle tire working state monitoring and sensing device and method
CN112976926A (en) * 2021-02-25 2021-06-18 长春汽车工业高等专科学校 Based on speed controller for new energy automobile of car networking

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111361365A (en) * 2020-04-10 2020-07-03 中国电子科技集团公司第四十八研究所 A tire condition monitoring module
CN112078309A (en) * 2020-08-25 2020-12-15 惠州华阳通用电子有限公司 Tire air leakage detection method and system
CN111994066B (en) * 2020-10-29 2021-01-29 北京航空航天大学 Intelligent automobile sensing system based on intelligent tire touch sensing
CN112223962A (en) * 2020-12-08 2021-01-15 北京航空航天大学 An intelligent vehicle control system and method based on pavement tactile perception
CN112622536A (en) * 2020-12-25 2021-04-09 中国农业大学 Vehicle tire working state monitoring and sensing device and method
CN112622536B (en) * 2020-12-25 2023-10-31 中国农业大学 Vehicle tyre working state monitoring and sensing device and method
CN112976926A (en) * 2021-02-25 2021-06-18 长春汽车工业高等专科学校 Based on speed controller for new energy automobile of car networking

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Application publication date: 20200407