CN111516705A - Automobile high-speed driving safety early warning method and system based on tire working conditions - Google Patents

Automobile high-speed driving safety early warning method and system based on tire working conditions Download PDF

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CN111516705A
CN111516705A CN202010397139.XA CN202010397139A CN111516705A CN 111516705 A CN111516705 A CN 111516705A CN 202010397139 A CN202010397139 A CN 202010397139A CN 111516705 A CN111516705 A CN 111516705A
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risk
tire
early warning
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CN111516705B (en
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潘梦鹞
王�锋
郇锐铁
吕小勇
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Guangdong College of Industry and Commerce
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Guangdong College of Industry and Commerce
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08—Interaction between the driver and the control system
    • B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
    • B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
    • B60W40/105—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
    • B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
    • B60W40/107—Longitudinal acceleration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/0205—Diagnosing or detecting failures; Failure detection models
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/029—Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W2050/0001—Details of the control system
    • B60W2050/0043—Signal treatments, identification of variables or parameters, parameter estimation or state estimation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08—Interaction between the driver and the control system
    • B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
    • B60W2050/143—Alarm means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/10—Longitudinal speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/10—Longitudinal speed
    • B60W2520/105—Longitudinal acceleration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2530/00—Input parameters relating to vehicle conditions or values, not covered by groups B60W2510/00 or B60W2520/00
    • B60W2530/20—Tyre data
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2552/00—Input parameters relating to infrastructure
    • B60W2552/35—Road bumpiness, e.g. potholes

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  • Automation & Control Theory (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Tires In General (AREA)

Abstract

The invention discloses a safety early warning method and a system for high-speed driving of an automobile based on tire working conditions, wherein the system comprises risk data acquisition, road surface environment acquisition, OBD data acquisition, tire original data acquisition and tire operation data acquisition; risk identification, identifying risk sources and main risk factors of the working conditions of the tires, and evaluating the risk sources A according to the risk source database of the working conditions of the high-speed running tires of the automobileiRisk value R ofAiSaid risk source comprisingRoad driving condition risk source, tire technical condition risk source and vehicle control index risk source data; risk assessment, assessing the overall risk level of the working condition of the tire; and risk early warning, namely providing an early warning method for a driver according to the overall risk level of the working condition of the tire, and reducing, eliminating or controlling the risk. The invention adopts the overall safety risk management of the working conditions of the tires, avoids traffic accidents caused by various risk sources of the working conditions of the tires when the automobile runs at high speed, and ensures that the automobile runs at high speed.

Description

Automobile high-speed driving safety early warning method and system based on tire working conditions
Technical Field
The invention belongs to the technical field of automobile driving safety risk management, and particularly relates to an automobile high-speed driving safety early warning method and system based on tire working conditions.
Background
In recent years, with the continuous and rapid development of the world economy, the quantity of motor vehicles is increased rapidly, and as late as 2019, the quantity of motor vehicles in the world reaches 12.9 million (3.48 million in China), 125 million people (6.3 million in China) die of traffic accidents every year, and the road traffic safety situation is very severe. In the driving process of an automobile, dangerous road conditions, deteriorated vehicle technical performance and out-of-control driving all cause accidents of traffic accidents, and the accidents are difficult to prevent like sudden mine accidents and floods, so that the safety of the motor vehicles becomes the first killer of the traffic accidents, and all countries in the world pay great attention to the safety of the motor vehicles.
The tire is the only part contacting with the ground in the running process of the automobile, has the functions of bearing, driving, braking, steering and the like, and is extremely important for the safety of high-speed running of the automobile. The tire can generate three forms of mechanical damage, fatigue damage and overheating damage during rolling, and severe traffic accidents such as tread delamination, cord breakage and tire burst are caused, wherein the overheating damage is a main factor causing abnormal damage of the tire. Tire heat generation mainly originates from: the heat generated by the alternating deformation of the inside of the rubber compound during running of the tire and the frictional heat generated by the direct contact of the tire with the road surface. The main factors affecting the tire from overheating damage include: tire operating conditions such as tire load, tire temperature, tire air pressure, vehicle travel speed, vehicle continuous travel time, road surface temperature, and tire structure. Therefore, the tire operating condition is a dangerous source of the high-speed running of the automobile, is an attribute which cannot be eliminated during the high-speed running of the automobile, and can cause personal injury and property loss under certain dangerous roads and driving conditions.
As a great potential safety hazard in the process of high-speed running of a vehicle, safety management is carried out on the working conditions of tires: firstly, safety identification, namely identifying a risk source of a tire working condition and determining the characteristics of the risk source; secondly, safety assessment is carried out, and the overall risk level of the working condition of the tire is assessed; and thirdly, safety early warning is carried out, an early warning method is provided for a driver according to the overall risk level of the working condition of the tire, and risks are reduced, eliminated or controlled. The method has very important effects on avoiding traffic accidents caused by the risk of working conditions of the high-speed running tires of the automobile and ensuring the high-speed running safety of the automobile.
At present, tire pressure and temperature for monitoring and alarming tire working conditions belong to individual parameters of the tire working conditions, all risk sources of the tire working conditions cannot be reflected, and safety risk management methods such as safety identification, evaluation, early warning and control on the overall risk and numerous risk sources of the tire working conditions in the high-speed running process of an automobile are not available, so that the overall risk level of the tire working conditions, main risk factors, control indexes and control ranges cannot be determined, the early warning method is difficult to be provided for a driver according to the overall risk level of the tire working conditions to reduce, eliminate or control the risk of the tire working conditions, and the high-speed running safety of the automobile is ensured.
Disclosure of Invention
The invention mainly aims to overcome the defects of the prior art and provide a safety early warning method and a safety early warning system for high-speed running of an automobile based on the working conditions of tires.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a high-speed driving safety early warning method of an automobile based on tire working conditions, which comprises the following steps:
acquiring risk data, namely acquiring road surface environment, OBD data, tire original data and tire running data;
risk identification, identifying risk sources and major risk factors of tire operating conditions, based on vehicle heightRisk source A of risk source database for working condition of fast-running tireiRisk value R ofAiThe risk sources comprise road running condition risk sources, tire technical condition risk sources and vehicle control index risk source data; the road driving condition risk source data comprises road surface temperature A1And road flatness A2(ii) a The source data of the tire technical condition risk comprises the tire delivery time A3Tire mileage a4Temperature resistant grade A of tyre5Tire load A6Tire pressure A7And temperature A of the tire8(ii) a The vehicle control index risk source data comprises a travel speed A9Running acceleration A10And a continuous running time A11；
Risk assessment, assessing the overall risk rating of the tire operating conditions, the function being expressed as follows:
Figure BDA0002488064690000031
the judgment rule of the overall risk level of the tire working condition is as follows:
r is not less than 65 or R A6100 or R A7100 or R A8100 major sources of risk;
r is more than or equal to 55 and less than 65;
r is more than or equal to 45 and less than 55 general risk sources;
r is more than or equal to 35 and less than 45;
and risk early warning, namely providing an early warning method for a driver according to the overall risk level of the working condition of the tire, and reducing, eliminating or controlling the risk: the red early warning represents major risk, the yellow early warning represents major risk, the blue early warning represents general risk, and the green early warning represents minor risk, so that the driver is reminded to take corresponding driving decision according to the early warning.
As a preferred technical scheme, the pavement information is collected by respectively sensing the pavement temperature and the pavement evenness through an infrared temperature measuring sensor and an acceleration sensor.
Preferably, the OBD data is obtained by reading a vehicle speed, a vehicle acceleration, and a vehicle continuous travel time by an OBD device provided in the vehicle.
According to a preferable technical scheme, the tire original data comprise tire leaving time, tire driving mileage and tire temperature resistance level.
As a preferred solution, the tire operation data includes tire load, tire pressure, and tire temperature;
and the tire load is sensed through the inertia measuring unit, and the tire air pressure and the tire temperature are sensed through the tire pressure and temperature sensor.
As a preferred technical scheme, in the tire working condition risk source database, the road driving condition accounts for 15%; the technical condition of the tire accounts for 55 percent; the vehicle driving control index accounts for 30 percent;
in the road driving condition, the weight of the road surface temperature A1 is 10%, and the weight of the road surface flatness A2 is 5%;
in the tire technical conditions, the weight of the tire factory time A3 is 5%, the weight of the tire mileage A4 is 5%, the weight of the tire temperature resistance grade A5 is 5%, the weight of the tire meeting the A6 is 15%, the weight of the tire air pressure A7 is 15%, and the weight of the tire temperature A8 is 10%;
in the vehicle driving control index, the running speed a9 is weighted 10%, the running acceleration a10 is weighted 10%, and the continuous running time a11 is weighted 10%.
As a preferable technical scheme, under the condition of a road surface temperature of a1, if a red high temperature of B1 occurs, the corresponding score is 100 points, if an orange high temperature of C1 occurs, the corresponding score is 80 points, if a yellow high temperature of D1 occurs, the corresponding score is 40 points, and if a daily temperature of E1 occurs, the corresponding score is 20 points;
under the condition of the road surface flatness A2, if a first-grade B2 appears, the corresponding score is 100; if the second-level C2 appears, the corresponding score is 40 points;
under the condition that the tire delivery time is A3, if a grade B3 appears, the corresponding score is 100; if the second-level C3 appears, the corresponding score is 60 points;
under the condition that the tire driving mileage is A4, if a first grade B4 appears, the corresponding score is 100; if the second-level C4 appears, the corresponding score is 80 points; if the three-level D4 appears, the corresponding score is 60 points;
under the temperature resistance grade of A5, if the grade of B5 appears, the corresponding score is 100; if the second-level C5 appears, the corresponding score is 80 points; if the three-level D5 appears, the corresponding score is 60 points;
under the condition that the tire conforms to the item A6, if the tire excessively conforms to the item B6, the corresponding score is 100; if the high load C6 appears, the corresponding score is 70 points; if the normal load D6 appears, the corresponding score is 40 points;
under the tire pressure of A7, if a quick air leakage occurs (B7), the corresponding score is 100; if the undervoltage C7 appears, the corresponding score is 700 points; if overpressure occurs (D7), the corresponding score is 50 points; if the normal air pressure E7 appears, the corresponding score is 40 points;
under the tire temperature A8, if the excessive temperature B8 occurs, the corresponding score is 100; if the critical temperature C8 appears, the corresponding score is 80 points; if the excessive temperature D8 appears, the corresponding score is 60 points; if the normal temperature E8 appears, the corresponding score is 40 points;
under the item of the driving speed A9, if the critical speed B9 appears, the corresponding score is 100; if the high speed C9 is exceeded, the corresponding score is 80 points; if the normal speed D9 is obtained, the corresponding score is 40 points;
under the item of the running acceleration A10, if a first grade B10 appears, the corresponding score is 100; if the second-level C10 appears, the corresponding score is 50 points;
under the item of continuous driving time A11, if a first grade B11 appears, the corresponding score is 100; if the second level C11 appears, the corresponding score is 50.
As a preferred technical solution, the driving decision is specifically:
and (3) taking an emergency driving decision in red early warning: immediately parking by side to process tyre fault;
and taking an emergency driving decision in yellow early warning: driving to a safe place to stop at a low speed along the side, and processing tire faults;
and blue early warning takes defense driving decision: driving to a safe place to stop at a low speed by leaning on the side, and observing the tire fault;
and (3) taking a normal driving decision in green early warning: and (4) controlling the running speed, acceleration and continuous running time of the vehicle in normal running.
The invention also provides a safety early warning system for high-speed driving of the automobile based on the working conditions of the tire, which comprises a risk data acquisition module, a risk identification module, a risk evaluation module and a risk early warning module;
the risk data acquisition module is used for collecting road surface environment, OBD data, tire original data and tire operation data;
the risk identification module is used for identifying the risk source and the main risk factors of the tire working condition and evaluating the risk source A according to the risk source database of the tire working condition of the high-speed running of the automobileiRisk value R ofAiThe risk sources comprise road running condition risk sources, tire technical condition risk sources and vehicle control index risk source data; the road driving condition risk source data comprises road surface temperature A1And road flatness A2；
The source data of the tire technical condition risk comprises the tire delivery time A3Tire mileage a4Temperature resistant grade A of tyre5Tire load A6Tire pressure A7And temperature A of the tire8；
The vehicle control index risk source data comprises a travel speed A9Running acceleration A10And a continuous running time A11；
The risk evaluation module is used for evaluating the overall risk level of the working condition of the tire;
the risk early warning module is used for providing an early warning method for a driver according to the overall risk grade of the working condition of the tire, and reducing, eliminating or controlling the risk: the red early warning represents major risk, the yellow early warning represents major risk, the blue early warning represents general risk, and the green early warning represents minor risk, so that the driver is reminded to take corresponding driving decision according to the early warning.
As a preferred technical solution, the risk assessment adopts a tire working condition overall risk assessment calculation method, and the function is expressed as follows:
Figure BDA0002488064690000071
the judgment rule of the overall risk level of the tire working condition is as follows:
r is not less than 65 or R A6100 or R A7100 or R A8100 major sources of risk;
r is more than or equal to 55 and less than 65;
r is more than or equal to 45 and less than 55 general risk sources;
r <45 is less risk source 35 ≦ R.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the invention carries out overall safety risk management on the working conditions of the tires, thereby bringing the advantages of avoiding traffic accidents caused by various risk sources of the working conditions of the tires when the automobile runs at high speed and ensuring the safety of the automobile running at high speed.
2. The invention adopts the safe identification of all risk sources of the working conditions of the tires in the high-speed running process of the automobile, thereby bringing the advantage of determining the overall risk of the working conditions of the tires.
3. The invention adopts the overall safety evaluation of the working condition of the tire in the high-speed running process of the automobile, and brings the advantages of determining the overall risk level of the working condition of the tire, main risk factors, control indexes and control ranges.
4. The invention provides an early warning method for the driver by adopting the overall risk grade of the working condition of the tire in the high-speed running process of the automobile, reminds the driver to take a corresponding running decision according to the early warning, and brings the advantage of reducing, eliminating or controlling the risk of the working condition of the tire.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
Fig. 2 is a block diagram of the system of the present invention.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Examples
Referring to fig. 1, the method for early warning safety of high-speed driving of an automobile based on the working condition of a tire according to the present embodiment includes the following steps:
step 101, risk data acquisition, wherein a tire working condition risk source data acquisition unit comprises: the road surface environment acquisition module, tire collection module, OBD data reading module and tire parameter input module.
The road surface environment acquisition module senses the temperature and the flatness of the road surface; in this embodiment, the road surface temperature and the road surface flatness are sensed by the infrared temperature measuring sensor and the acceleration sensor respectively.
The tire collecting module senses tire load, tire pressure and tire temperature; and the tire load is sensed through the inertia measuring unit, and the tire air pressure and the tire temperature are sensed through the tire pressure and temperature sensor.
The OBD data reading module reads the speed, the acceleration and the continuous running time of the vehicle;
the tire parameter input module inputs tire delivery time, tire driving mileage and tire temperature resistance level.
Step 102 risk identification identifies risk sources and major risk factors for tire operating conditions. Evaluating a risk source A according to a risk source database of working conditions of high-speed running tires of automobilesiRisk value R ofAi。
Further, referring to table 1, the tire operating condition risk source data is specifically:
the risk source data comprises road driving conditions, tire technical conditions and vehicle control index risk source data.
Road driving condition risk source data comprises road surface temperature A1Road surface evenness A2。
Source data of tire technical condition risk includes tire delivery time A3Tire mileage a4Temperature resistant grade A of tyre5Tire load A6Tire pressure A7Temperature of tire A8。
Vehicle control index risk source data includes travel speed A9Running acceleration A10Continuous running time A11。
TABLE 1 tire operating condition Risk source database
Figure BDA0002488064690000091
Figure BDA0002488064690000101
And 103, risk assessment, namely assessing the overall risk level of the working condition of the tire. The embodiment designs a tire working condition overall risk assessment calculation method, and the function is expressed as:
Figure BDA0002488064690000102
the judgment rule of the overall risk level of the tire working condition is as follows:
r is not less than 65 or R A6100 or R A7100 or R A8100 significant sources of risk
R is more than or equal to 55 and less than 65 as a large risk source
45 ≦ R <55 general sources of risk
Less risk source with 35 ≦ R <45
And 104, risk early warning, namely providing an early warning method for a driver according to the overall risk level of the working condition of the tire, and reducing, eliminating or controlling the risk: the red early warning represents major risk, the yellow early warning represents major risk, the blue early warning represents general risk, and the green early warning represents minor risk, so that the driver is reminded to take corresponding driving decision according to the early warning.
In one embodiment, the driving decision specifically includes the following decision strategies:
and (3) taking an emergency driving decision in red early warning: immediately parking by side to process tyre fault;
and taking an emergency driving decision in yellow early warning: driving to a safe place to stop at a low speed along the side, and processing tire faults;
and blue early warning takes defense driving decision: driving to a safe place to stop at a low speed by leaning on the side, and observing the tire fault;
and (3) taking a normal driving decision in green early warning: and (4) controlling the running speed, acceleration and continuous running time of the vehicle in normal running.
Referring to fig. 2, the safety early warning system for high-speed driving of an automobile based on tire working conditions according to the present embodiment includes a risk data collecting module 100, a risk identifying module 200, a risk evaluating module 300, and a risk early warning module 400;
the risk data acquisition module 100 is used for collecting road surface environment, OBD data, tire original data and tire operation data;
the risk identification module 200 is used for identifying the risk source and the main risk factors of the tire working condition, and evaluating the risk source A according to the risk source database of the tire working condition of the high-speed running of the automobileiRisk value R ofAiThe risk sources comprise road running condition risk sources, tire technical condition risk sources and vehicle control index risk source data; the road driving condition risk source data comprises road surface temperature A1And road flatness A2。
In one embodiment, the source data for tire specifications risk includes tire factory time A3Tire mileage a4Temperature resistant grade A of tyre5Tire load A6Tire pressure A7And temperature A of the tire8；
The vehicle control index risk source data comprises a travel speed A9Running acceleration A10And successive rowsDriving time A11。
The risk assessment module 300 is used for assessing the overall risk level of the tire working condition;
in one embodiment, the risk assessment is a calculation of an overall risk assessment for the operating conditions of the tire, the function being expressed as:
Figure BDA0002488064690000111
the judgment rule of the overall risk level of the tire working condition is as follows:
r is not less than 65 or R A6100 or R A7100 or R A8100 major sources of risk;
r is more than or equal to 55 and less than 65;
r is more than or equal to 45 and less than 55 general risk sources;
r <45 is less risk source 35 ≦ R.
The risk early warning module 400 is used for providing an early warning method for a driver according to the overall risk level of the working condition of the tire, and reducing, eliminating or controlling the risk: the red early warning represents major risk, the yellow early warning represents major risk, the blue early warning represents general risk, and the green early warning represents minor risk, so that the driver is reminded to take corresponding driving decision according to the early warning.
In the description herein, reference to the terms "detailed description," "an embodiment," "one of the embodiments," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (10)

1. The high-speed driving safety early warning method of the automobile based on the working condition of the tire is characterized by comprising the following steps of:
acquiring risk data, namely acquiring road surface environment, OBD data, tire original data and tire running data;
risk identification, identifying risk sources and main risk factors of the working conditions of the tires, and evaluating the risk sources A according to the risk source database of the working conditions of the high-speed running tires of the automobileiRisk value R ofAiThe risk sources comprise road running condition risk sources, tire technical condition risk sources and vehicle control index risk source data; the road driving condition risk source data comprises road surface temperature A1And road flatness A2(ii) a The source data of the tire technical condition risk comprises the tire delivery time A3Tire mileage a4Temperature resistant grade A of tyre5Tire load A6Tire pressure A7And temperature A of the tire8(ii) a The vehicle control index risk source data comprises a travel speed A9Running acceleration A10And a continuous running time A11；
Risk assessment, assessing the overall risk rating of the tire operating conditions, the function being expressed as follows:
Figure FDA0002488064680000011
the judgment rule of the overall risk level of the tire working condition is as follows:
r is not less than 65 or RA6100 or RA7100 or RA8100 major sources of risk;
r is more than or equal to 55 and less than 65;
r is more than or equal to 45 and less than 55 general risk sources;
r is more than or equal to 35 and less than 45;
and risk early warning, namely providing an early warning method for a driver according to the overall risk level of the working condition of the tire, and reducing, eliminating or controlling the risk: the red early warning represents major risk, the yellow early warning represents major risk, the blue early warning represents general risk, and the green early warning represents minor risk, so that the driver is reminded to take corresponding driving decision according to the early warning.
2. The automobile high-speed driving safety early warning method based on the tire working condition as claimed in claim 1, wherein the road surface information is acquired by respectively sensing the road surface temperature and the road surface evenness through an infrared temperature measuring sensor and an acceleration sensor.
3. The method as claimed in claim 1, wherein the OBD data is obtained by reading vehicle speed, vehicle acceleration and vehicle continuous driving time through an OBD device of the vehicle.
4. The method as claimed in claim 1, wherein the tire raw data includes a tire leaving time, a tire mileage and a tire temperature tolerance level.
5. The tire operating condition-based safety precaution method for high-speed driving of automobiles according to claim 1, wherein said tire operating data includes tire load, tire pressure and tire temperature;
and the tire load is sensed through the inertia measuring unit, and the tire air pressure and the tire temperature are sensed through the tire pressure and temperature sensor.
6. The tire working condition based automobile high-speed driving safety early warning method according to claim 1, wherein in the tire working condition risk source database, road driving conditions account for 15%; the technical condition of the tire accounts for 55 percent; the vehicle driving control index accounts for 30 percent;
in the road driving condition, the weight of the road surface temperature A1 is 10%, and the weight of the road surface flatness A2 is 5%;
in the tire technical conditions, the weight of the tire factory time A3 is 5%, the weight of the tire mileage A4 is 5%, the weight of the tire temperature resistance grade A5 is 5%, the weight of the tire meeting the A6 is 15%, the weight of the tire air pressure A7 is 15%, and the weight of the tire temperature A8 is 10%;
in the vehicle driving control index, the running speed a9 is weighted 10%, the running acceleration a10 is weighted 10%, and the continuous running time a11 is weighted 10%.
7. The tire operating condition-based high-speed driving safety precaution method of claim 6, wherein under a road surface temperature of A1, if a red high temperature of B1 occurs, the score is 100, if an orange high temperature of C1 occurs, the score is 80, if a yellow high temperature of D1 occurs, the score is 40, and if a daily temperature of E1 occurs, the score is 20;
under the condition of the road surface flatness A2, if a first-grade B2 appears, the corresponding score is 100; if the second-level C2 appears, the corresponding score is 40 points;
under the condition that the tire delivery time is A3, if a grade B3 appears, the corresponding score is 100; if the second-level C3 appears, the corresponding score is 60 points;
under the condition that the tire driving mileage is A4, if a first grade B4 appears, the corresponding score is 100; if the second-level C4 appears, the corresponding score is 80 points; if the three-level D4 appears, the corresponding score is 60 points;
under the temperature resistance grade of A5, if the grade of B5 appears, the corresponding score is 100; if the second-level C5 appears, the corresponding score is 80 points; if the three-level D5 appears, the corresponding score is 60 points;
under the condition that the tire conforms to the item A6, if the tire excessively conforms to the item B6, the corresponding score is 100; if the high load C6 appears, the corresponding score is 70 points; if the normal load D6 appears, the corresponding score is 40 points;
under the tire pressure of A7, if a quick air leakage occurs (B7), the corresponding score is 100; if the undervoltage C7 appears, the corresponding score is 700 points; if overpressure occurs (D7), the corresponding score is 50 points; if the normal air pressure E7 appears, the corresponding score is 40 points;
under the tire temperature A8, if the excessive temperature B8 occurs, the corresponding score is 100; if the critical temperature C8 appears, the corresponding score is 80 points; if the excessive temperature D8 appears, the corresponding score is 60 points; if the normal temperature E8 appears, the corresponding score is 40 points;
under the item of the driving speed A9, if the critical speed B9 appears, the corresponding score is 100; if the high speed C9 is exceeded, the corresponding score is 80 points; if the normal speed D9 is obtained, the corresponding score is 40 points;
under the item of the running acceleration A10, if a first grade B10 appears, the corresponding score is 100; if the second-level C10 appears, the corresponding score is 50 points;
under the item of continuous driving time A11, if a first grade B11 appears, the corresponding score is 100; if the second level C11 appears, the corresponding score is 50.
8. The safety early warning method for high-speed driving of the automobile based on the working condition of the tire as claimed in claim 1, wherein the driving decision is specifically as follows:
and (3) taking an emergency driving decision in red early warning: immediately parking by side to process tyre fault;
and taking an emergency driving decision in yellow early warning: driving to a safe place to stop at a low speed along the side, and processing tire faults;
and blue early warning takes defense driving decision: driving to a safe place to stop at a low speed by leaning on the side, and observing the tire fault;
and (3) taking a normal driving decision in green early warning: and (4) controlling the running speed, acceleration and continuous running time of the vehicle in normal running.
9. The automobile high-speed driving safety early warning system based on the working conditions of the tires is characterized by comprising a risk data acquisition module, a risk identification module, a risk evaluation module and a risk early warning module;
the risk data acquisition module is used for collecting road surface environment, OBD data, tire original data and tire operation data;
the risk identification module is used for identifying the risk source and the main risk factors of the tire working condition and evaluating the risk source A according to the risk source database of the tire working condition of the high-speed running of the automobileiRisk value R ofAiThe risk sources comprise road running condition risk sources, tire technical condition risk sources and vehicle control index risk source data; the road driving condition risk source data comprises road surface temperature A1And road flatness A2；
The source data of the tire technical condition risk comprises the tire delivery time A3Tire mileage a4Temperature resistant grade A of tyre5Tire load A6Tire pressure A7And temperature A of the tire8；
The vehicle control index risk source data comprises a travel speed A9Running acceleration A10And a continuous running time A11；
The risk evaluation module is used for evaluating the overall risk level of the working condition of the tire;
the risk early warning module is used for providing an early warning method for a driver according to the overall risk grade of the working condition of the tire, and reducing, eliminating or controlling the risk: the red early warning represents major risk, the yellow early warning represents major risk, the blue early warning represents general risk, and the green early warning represents minor risk, so that the driver is reminded to take corresponding driving decision according to the early warning.
10. The tire operating condition-based high-speed driving safety pre-warning system for the automobile according to claim 9, wherein the risk assessment adopts a tire operating condition overall risk assessment calculation method, and the function is expressed as follows:
Figure FDA0002488064680000041
the judgment rule of the overall risk level of the tire working condition is as follows:
r is not less than 65 or RA6100 or RA7100 or RA8100 major sources of risk;
r is more than or equal to 55 and less than 65;
r is more than or equal to 45 and less than 55 general risk sources;
r <45 is less risk source 35 ≦ R.
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