CN107867131A - A kind of vehicle safety monitoring method and system - Google Patents
A kind of vehicle safety monitoring method and system Download PDFInfo
- Publication number
- CN107867131A CN107867131A CN201610856674.0A CN201610856674A CN107867131A CN 107867131 A CN107867131 A CN 107867131A CN 201610856674 A CN201610856674 A CN 201610856674A CN 107867131 A CN107867131 A CN 107867131A
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- Prior art keywords
- tire
- pressure state
- wheel
- low
- rotating speed
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B60C23/061—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 by monitoring wheel speed
-
- 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
- B60C23/08—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 by touching the ground
Abstract
The present invention, which provides a kind of vehicle safety monitoring method and system, this method, to be included：Detect the rotating speed and angular speed of wheel；The tire pressure state of tire is judged according to the rotating speed of wheel and angular speed；When the tire pressure state is low-pressure state, alarm is sent.The present invention judges the tire pressure state of tire by the rotating speed and angular speed of wheel, pressure sensor need not be mounted directly to perceive the tire pressure of tire in wheel tyre cavity, the tire pressure state of tire is obtained in the case where the original design of tire or state need not be destroyed, alarm is sent when pressure of tire is too low, user is reminded in time, reduces the risk that security incident occurs.
Description
Technical field
The present invention relates to technical field of vehicle control, more specifically to a kind of vehicle safety monitoring method and system.
Background technology
The height of tire pressure of automobile tire, directly influence security, comfortableness and the fuel-economy of vehicle safety traffic
Property.Blowing out is one of the main reason for triggering traffic accident, keep pressure of tire normally and discovery in time to have a flat tire is to prevent
The key blown out.In the last few years, because the major traffic accidents that tire problem triggers are in ascendant trend year by year.It is it is reported that national
Because the accident that tire triggers accounts for 20.8% in numerous traffic accidents.Highway per 100 km accident rate is the 4 of common road
More again, accident death rate is 5 times of common road, wherein 70% is due to caused by tyre explosion.Tire pressure monitoring system at present
Unite costly, tire pressure monitoring system is also without automobile standard configuration function is turned into, and thus inexpensive tire pressure monitoring scheme is most
The method for solving current state well.
The common tire pressure monitoring system of tradition is as shown in figure 1, be divided into tire module and central acceptance module, i.e., in automotive wheels
Pressure/temperature sensor (including pressure sensor and temperature sensor) of the tyre cavity installation using lithium ion battery as power supply is come direct
The pressure and temperature of tire is measured, and is transmitted into by wireless-modulated and each tire is pressed on the monitor of bridge
Row display and monitoring, when pressure of tire is too low or has seepage, system will automatic alarm.The shortcomings that this design is due to pressure
Force snesor and be wirelessly transferred etc. hardware device manufacturing process it is higher, its cost is far above other systems.And the system is adopted
With lithium battery power supply, it is impossible to realize real-time monitoring truly, and its hyperfrequency transmission signal (by megahertz in units of)
Whether bring harm also unknown at present to the equipment around it.In addition, whether built-in sensors or outer sensor
All change the original state of tire, it is also possible to the feelings for causing contingency to occur because destroying original system design balance occur
Condition.
The content of the invention
The present invention proposes a kind of vehicle safety monitoring method and system, and tire is monitored under the original state for not destroying tire
Tire pressure state, send alarm when tire pressure is too low.
Therefore, the present invention proposes following technical scheme：
In a first aspect, a kind of vehicle safety monitoring method, including：
Detect the rotating speed and angular speed of wheel；
The tire pressure state of tire is judged according to the rotating speed of wheel and angular speed；
When the tire pressure state is low-pressure state, alarm is sent.
Wherein, the rotating speed and angular speed of the detection wheel, including：Pass through turn of the wheel anti-lock braking system of vehicle
The rotating speed and angular speed of fast sensor detection wheel.
Wherein, the rotating speed and angular speed according to wheel judges the tire pressure state of tire, including：
The effective radius of tire is calculated according to the rotating speed of wheel and angular speed；
If the effective radius of tire exceeds normal range (NR), the tire pressure state of tire is low-pressure state, is otherwise normal shape
State.
Wherein, if the effective radius of the tire exceeds normal range (NR), the tire pressure state of tire is low-pressure state, bag
Include：If the ratio of the effective radius of tire and the initial radium of tire is less than threshold value, the tire pressure state of tire is low-pressure state.
Wherein, the rotating speed and angular speed according to wheel judges the tire pressure state of tire, including：Utilize longitudinal direction friction mould
Type and yaw rate model, the effective radius of each tire is calculated according to the rotating speed of each wheel and angular speed, and calculated
The tire pressure state of which tire is low-pressure state in four tires；
It is described to send alarm when the tire pressure state is low-pressure state, including：Taken turns when which is calculated in four tires
The tire pressure state of tire is low-pressure state, indicates that the tire pressure state of corresponding tire is bright for the indicator lamp lamp of low-pressure state.
Second aspect, a kind of vehicle safety monitoring system, including：
Detection module, for detecting the rotating speed and angular speed of wheel；
Judge module, the tire pressure state of tire is judged for the rotating speed according to wheel and angular speed；
Alarm module, for being low-pressure state when the tire pressure state, send alarm.
Wherein, the detection module is specially：Detected by the speed probe of the wheel anti-lock braking system of vehicle
The rotating speed and angular speed of wheel.
Wherein, the judge module is specifically used for：
The effective radius of tire is calculated according to the rotating speed of wheel and angular speed；
If the effective radius of tire exceeds normal range (NR), the tire pressure state of tire is low-pressure state, is otherwise normal shape
State.
Wherein, if the effective radius of the tire exceeds normal range (NR), the tire pressure state of tire is low-pressure state, bag
Include：If the ratio of the effective radius of tire and the initial radium of tire is less than threshold value, the tire pressure state of tire is low-pressure state.
Wherein, the judge module is specifically used for：Using longitudinal friction model and yaw rate model, according to each car
The rotating speed and angular speed of wheel calculate the effective radius of each tire, and calculate the tire pressure state of which tire in four tires
For low-pressure state；
The alarm module is specifically used for：The tire pressure state which tire in four tires is calculated when judge module is
Low-pressure state, indicate that the tire pressure state of corresponding tire is bright for the indicator lamp lamp of low-pressure state.
The present invention, which provides a kind of vehicle safety monitoring method and system, this method, to be included：Detect the rotating speed and angle speed of wheel
Degree；The tire pressure state of tire is judged according to the rotating speed of wheel and angular speed；When the tire pressure state is low-pressure state, police is sent
Report.The present invention judges the tire pressure state of tire by the rotating speed and angular speed of wheel, it is not necessary to is mounted directly pressure in wheel tyre cavity
Force snesor perceives the tire pressure of tire, and the tire of tire is obtained in the case where that need not destroy the original design of tire or state
Pressure condition, alarm is sent when pressure of tire is too low, remind user in time, reduce the risk that security incident occurs.
Brief description of the drawings
Fig. 1 is the block diagram of the tire pressure monitoring system of prior art.
Fig. 2 is a kind of method flow diagram for vehicle safety monitoring method that the embodiment of the present invention one provides.
Fig. 3 is a kind of block diagram for vehicle safety monitoring system that the embodiment of the present invention two provides.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment one
As shown in Fig. 2 a kind of vehicle safety monitoring method, comprises the following steps：
S101, the rotating speed and angular speed for detecting wheel.
S102, the tire pressure state for judging according to the rotating speed and angular speed of wheel tire.
S103, when the tire pressure state is low-pressure state, send alarm.
Vehicle in the process of moving, in the case of speed identical, the rotating speed and angular speed of wheel with tire effectively half
Footpath (i.e. the effective rolling radius of tire) is relevant, and when the tire pressure of tire reduces, the deformation of tire impetus will increase, and it has
Effect radius will diminish, and according to vehicle velocity V=ω * r relation, wherein r is the effective radius of tire, and ω is the angle speed of wheel (tire)
Degree, in the case of wheel velocity identical, the low tire angular velocity of tire pressure will become big, such as relational expression：ω=V/r=V/ (r0-
δ), the initial radium of tire is r0, and radius varitation caused by being reduced due to tire pressure is δ, therefore angular speed and tire is effective
Radius r or radius varitation δ is related.
It is also related to effective radius in addition, rotating speed is related to angular speed, therefore angular speed, rotating speed, tire can be utilized
The relation of effective radius three calculates the effective radius of tire (or variable quantity of tire radius), therefore, can pass through wheel
Rotating speed and angular speed calculate the variable quantity of the effective radius of tire or radius, the effective radius or radius further according to tire
Variable quantity judges the tire pressure state of tire, without being mounted directly pressure sensor in wheel tyre cavity to perceive the tire pressure of tire,
The tire pressure state of tire is obtained in the case where keeping the original design of tire or state, not because the tire pressure state for obtaining tire increases
Add other risks, and alarm is sent when pressure of tire is too low, remind user in time, reduce the risk that security incident occurs.
Preferably, the step S101 includes：Detected by the speed probe of the wheel anti-lock braking system of vehicle
The rotating speed and angular speed of wheel.
Wheel anti-lock braking system is had been applied in most of vehicle, so using wheel anti-skid braking system
Data with existing carries out tire pressure monitoring and analyzes a direction for having become and can carrying out function popularization in system, without any hardware
Addition can obtain the rotating speed and angular speed of wheel, reduce cost；Because vehicle need not carry out the peace of extra sensor
Dress, thus reduce due to addition external equipment and cause the change to vehicle body holonomic system, and then prevent it is unnecessary
Potential safety hazard, software algorithm addition need to be only carried out on the basis of data with existing and can be achieved to obtain the tire pressure state of tire.
After the rotating speed and angular speed of wheel is detected by the speed probe of the wheel anti-lock braking system of vehicle,
BCM (Body Control Module, Body Control module) ECU (Electronic Control Unit, electronics can be passed through
Control unit), MMI (Multi Media Interface, digital video interactive) ECU, T-Box (Telematics BOX,
Information boxes) ECU or OBD (On-Board Diagnostic) ECU judge the tire pressure state of tire according to the data of acquisition, no
Need to realize by installing other controllers, it is cost-effective.
Preferably, the step S102 includes：The effective radius of tire is calculated according to the rotating speed of wheel and angular speed；If wheel
The effective radius of tire exceeds normal range (NR), then the tire pressure state of tire is low-pressure state, is otherwise normal condition.
Preferably, if the effective radius of the tire exceeds normal range (NR), the tire pressure state of tire is low-pressure state, bag
Include：If the ratio of the effective radius of tire and the initial radium of tire is less than threshold value, the tire pressure state of tire is low-pressure state.
Optionally, the ratio of the initial radium of the effective radius of tire and tire is less than 95%, it is believed that tire has
Effect radius exceeds normal range (NR), and tire pressure state is low-pressure state.
Preferably, using longitudinal friction model and yaw rate model, according to the rotating speed and turn meter of each wheel
The effective radius of each tire is calculated, and the tire pressure state for calculating which tire in four tires is low-pressure state.
Longitudinal friction model refers to homonymy wheels travel apart from identical, coaxial wheel friction ratio identical theory, horizontal
Pendulum Rate Models refer to according to homonymy wheel normally travel state downward driving that apart from identical homonymy vehicle wheel rotational speed is identical.Utilize
Longitudinal friction model and yaw rate model, effectively the half of tire is calculated according to operating range, the rotating speed of wheel and turn meter
Footpath (or effective radius of wheel), further according to diagonal radius of wheel product is identical, coaxial wheel radius is identical, homonymy front and back wheel
Radius scale identical principle, calculate some specific tire in vehicle in four tires and be in low-pressure state.It is such
Algorithm process, can avoid can not when same axletree or two tires of the same side are all in low-pressure state in wheel speed comparison method
The problem of discrimination, it can accurately obtain which tire is in low-pressure state.
Preferably, the step S103 includes：When the tire pressure state for calculating which tire in four tires is low pressure
State, indicate that the tire pressure state of corresponding tire is bright for the indicator lamp lamp of low-pressure state.
The low-pressure state of different tires is indicated with different indicator lamps, so that user has found which tire presses through in time
It is low, counter-measure is made in time, avoids that security incident occurs.
A kind of vehicle safety monitoring method of the embodiment of the present invention, judges tire by the rotating speed and angular speed of wheel
Tire pressure state, it is not necessary to be mounted directly pressure sensor to perceive the tire pressure of tire in wheel tyre cavity, tire original need not destroyed
The tire pressure of tire is obtained in the case of some design or state, alarm is sent when pressure of tire is too low, reminds user in time, is dropped
The low risk that security incident occurs.
Embodiment two
The present embodiment provides a kind of vehicle safety monitoring system, and the system is corresponding with the method for embodiment one, this implementation
The not yet detailed content reference implementation example one of example.
As shown in figure 3, a kind of vehicle safety monitoring system, including：
Detection module 101, for detecting the rotating speed and angular speed of wheel.
Judge module 102, the tire pressure state of tire is judged for the rotating speed according to wheel and angular speed.
Alarm module 103, for being low-pressure state when the tire pressure state, send alarm.
Preferably, the detection module 101 is specially：Pass through the speed probe of the wheel anti-lock braking system of vehicle
Detect the rotating speed and angular speed of wheel.
Preferably, the judge module 102 is specifically used for：Effectively the half of tire is calculated according to the rotating speed of wheel and angular speed
Footpath；If the effective radius of tire exceeds normal range (NR), the tire pressure state of tire is low-pressure state, is otherwise normal condition.
Preferably, if the effective radius of the tire exceeds normal range (NR), the tire pressure state of tire is low-pressure state, bag
Include：If the ratio of the effective radius of tire and the initial radium of tire is less than threshold value, the tire pressure state of tire is low-pressure state.
Preferably, the judge module 102 is specifically used for：Using longitudinal friction model and yaw rate model, according to every
The rotating speed and angular speed of one wheel calculate the effective radius of each tire, and calculate the tire of which tire in four tires
Pressure condition is low-pressure state.
The alarm module 103 is specifically used for：When judge module 102 calculates the tire pressure of which tire in four tires
State is low-pressure state, indicates that the tire pressure state of corresponding tire is bright for the indicator lamp lamp of low-pressure state.
A kind of vehicle safety monitoring system of the embodiment of the present invention, the original design of tire or state need not destroyed
In the case of obtain the tire pressure state of tire, alarm is sent when pressure of tire is too low, reminds user in time, reduces the safe thing of generation
Therefore risk.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is defined.
Claims (10)
- A kind of 1. vehicle safety monitoring method, it is characterised in that including：Detect the rotating speed and angular speed of wheel；The tire pressure state of tire is judged according to the rotating speed of wheel and angular speed；When the tire pressure state is low-pressure state, alarm is sent.
- 2. vehicle safety monitoring method as claimed in claim 1, it is characterised in that the rotating speed and angle speed of the detection wheel Degree, including：The rotating speed and angular speed of wheel are detected by the speed probe of the wheel anti-lock braking system of vehicle.
- 3. vehicle safety monitoring method as claimed in claim 1, it is characterised in that the rotating speed and angular speed according to wheel Judge the tire pressure state of tire, including：The effective radius of tire is calculated according to the rotating speed of wheel and angular speed；If the effective radius of tire exceeds normal range (NR), the tire pressure state of tire is low-pressure state, is otherwise normal condition.
- 4. vehicle safety monitoring method as claimed in claim 3, it is characterised in that if the effective radius of the tire is beyond just Normal scope, then the tire pressure state of tire is low-pressure state, including：If the ratio of the effective radius of tire and the initial radium of tire Less than threshold value, then the tire pressure state of tire is low-pressure state.
- 5. vehicle safety monitoring method as claimed in claim 1, it is characterised in that the rotating speed and angular speed according to wheel Judge the tire pressure state of tire, including：Using longitudinal friction model and yaw rate model, according to the rotating speed of each wheel and Angular speed calculates the effective radius of each tire, and the tire pressure state for calculating which tire in four tires is low pressure shape State；It is described to send alarm when the tire pressure state is low-pressure state, including：When which tire in four tires calculated Tire pressure state is low-pressure state, indicates that the tire pressure state of corresponding tire is bright for the indicator lamp lamp of low-pressure state.
- A kind of 6. vehicle safety monitoring system, it is characterised in that including：Detection module, for detecting the rotating speed and angular speed of wheel；Judge module, the tire pressure state of tire is judged for the rotating speed according to wheel and angular speed；Alarm module, for being low-pressure state when the tire pressure state, send alarm.
- 7. vehicle safety monitoring system as claimed in claim 6, it is characterised in that the detection module is specially：Pass through car Wheel anti-lock braking system speed probe detection wheel rotating speed and angular speed.
- 8. vehicle safety monitoring system as claimed in claim 6, it is characterised in that the judge module is specifically used for：The effective radius of tire is calculated according to the rotating speed of wheel and angular speed；If the effective radius of tire exceeds normal range (NR), the tire pressure state of tire is low-pressure state, is otherwise normal condition.
- 9. vehicle safety monitoring system as claimed in claim 8, it is characterised in that if the effective radius of the tire is beyond just Normal scope, then the tire pressure state of tire is low-pressure state, including：If the ratio of the effective radius of tire and the initial radium of tire Less than threshold value, then the tire pressure state of tire is low-pressure state.
- 10. vehicle safety monitoring system as claimed in claim 6, it is characterised in that the judge module is specifically used for：Utilize Longitudinal friction model and yaw rate model, effectively the half of each tire is calculated according to the rotating speed of each wheel and angular speed Footpath, and the tire pressure state for calculating which tire in four tires is low-pressure state；The alarm module is specifically used for：When the tire pressure state that judge module calculates which tire in four tires is low pressure State, indicate that the tire pressure state of corresponding tire is bright for the indicator lamp lamp of low-pressure state.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610856674.0A CN107867131A (en) | 2016-09-27 | 2016-09-27 | A kind of vehicle safety monitoring method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610856674.0A CN107867131A (en) | 2016-09-27 | 2016-09-27 | A kind of vehicle safety monitoring method and system |
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| Publication Number | Publication Date |
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| CN107867131A true CN107867131A (en) | 2018-04-03 |
Family
ID=61751313
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| CN201610856674.0A Pending CN107867131A (en) | 2016-09-27 | 2016-09-27 | A kind of vehicle safety monitoring method and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184398A (en) * | 2021-12-08 | 2022-03-15 | 合肥晟泰克汽车电子股份有限公司 | Vehicle positioning method |
| CN114379294A (en) * | 2022-03-24 | 2022-04-22 | 深圳市其利天下技术开发有限公司 | OBD (on-board diagnostics) combined type tire pressure monitoring method and system |
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| CN204432265U (en) * | 2015-01-04 | 2015-07-01 | 陕西汽车集团有限责任公司 | Many algorithm fusions type commercial vehicle/comm..vehicle tire pressure monitoring system and this commercial vehicle/comm..vehicle |
| CN105691121A (en) * | 2016-04-01 | 2016-06-22 | 苏州车邦智能科技有限公司 | Tire pressure monitoring method and device based on OBD |
| CN105818618A (en) * | 2016-03-24 | 2016-08-03 | 邹红斌 | Tire pressure detection method and device |
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2016
- 2016-09-27 CN CN201610856674.0A patent/CN107867131A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0716941A1 (en) * | 1994-12-15 | 1996-06-19 | Sumitomo Electric Industries, Ltd. | Method of and device for detecting tire pressure drop |
| JP2003154828A (en) * | 2001-11-22 | 2003-05-27 | Toyota Motor Corp | Tire air pressure detector |
| CN201824807U (en) * | 2010-09-20 | 2011-05-11 | 奇瑞汽车股份有限公司 | Tire pressure monitoring alarm device |
| CN204432265U (en) * | 2015-01-04 | 2015-07-01 | 陕西汽车集团有限责任公司 | Many algorithm fusions type commercial vehicle/comm..vehicle tire pressure monitoring system and this commercial vehicle/comm..vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184398A (en) * | 2021-12-08 | 2022-03-15 | 合肥晟泰克汽车电子股份有限公司 | Vehicle positioning method |
| CN114379294A (en) * | 2022-03-24 | 2022-04-22 | 深圳市其利天下技术开发有限公司 | OBD (on-board diagnostics) combined type tire pressure monitoring method and system |
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