CN105818618B - Tire pressure detection method and device - Google Patents
Tire pressure detection method and device Download PDFInfo
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- CN105818618B CN105818618B CN201610173405.4A CN201610173405A CN105818618B CN 105818618 B CN105818618 B CN 105818618B CN 201610173405 A CN201610173405 A CN 201610173405A CN 105818618 B CN105818618 B CN 105818618B
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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
- B60C23/0486—Signalling devices actuated by tyre pressure mounted on the wheel or tyre comprising additional sensors in the wheel or tyre mounted monitoring device, e.g. movement sensors, microphones or earth magnetic field sensors
- B60C23/0488—Movement sensor, e.g. for sensing angular speed, acceleration or centripetal force
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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
- B60C23/06—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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The application is about tire pressure detection method and device, which comprises obtains the wheel speed of each tire in vehicle operation；According to the wheel speed aggregate-value of the acquired each tire of wheel speed calculation within a preset period of time；The calibration wheel speed value of each tire is determined according to the wheel speed calibration factor of the wheel speed aggregate-value of each tire and the tire；The wheel speed calibration factor is the calibration factor that the pre-stored wheel speed by each tire met under calibration condition is calibrated to unified wheel speed；The difference of maximum calibration wheel speed value and minimum calibration wheel speed value is compared with preset alarm threshold value；The tire pressure state of the vehicle is judged according to comparing result.The application can be with save the cost, while improving the accuracy rate of tire pressure detection.
Description
Technical field
This application involves detection technique field more particularly to tire pressure detection method and device.
Background technique
Tire pressure is the air pressure of inside tires, can be referred to as tire pressure.Air pressure is excessively high and too low can all shorten tire
Service life, tire is in overvoltage condition when tire pressure is higher than certain threshold value, when tire pressure is lower than certain threshold value at tire
In under-voltage condition.Tire pressure is too low to make carcass deformation increase, and sidewall is easy to appear breach, while generating flexion movement, lead
Excessive heating is caused, ageing of rubber, casing ply fatigue are promoted, cord fractures, and can also tire-contact area be made to increase, and accelerates tire shoulder mill
Damage, it is also possible to cause safety accident.Tire pressure is excessively high to make tyre cord be deformed by excessive extension, under carcass tension
Drop, the load that is subject to automobile under steam increase, and implosion and explosion can be generated by such as impacting, while air pressure is excessively high can also accelerate
Crown abrasion, and decline resistance to performance of rolling.Therefore, seem particularly significant to the detection of tire pressure.
In the related technology, pressure sensor can be increased at the valve inside of each tire, it will using wireless communication technique
The pressure value of each tire is sent to central processing unit, is compared by central processing unit according to preset tire pressure standard value, from
And judge whether tire pressure is normal.
As it can be seen that need to increase on each tire pressure sensor and wireless communication module in the related technology, hardware at
Originally, installation cost and maintenance cost are higher.
Summary of the invention
The application provides tire pressure detection method and device, at high cost in the prior art to solve the problems, such as.
According to the embodiment of the present application in a first aspect, providing a kind of tire pressure detection method, which comprises
Obtain the wheel speed of each tire in vehicle operation；
According to the wheel speed aggregate-value of the acquired each tire of wheel speed calculation within a preset period of time；
The calibration wheel speed of each tire is determined according to the wheel speed calibration factor of the wheel speed aggregate-value of each tire and the tire
Value；The wheel speed calibration factor is that the pre-stored wheel speed by each tire met under calibration condition is calibrated to unified wheel speed
Calibration factor；
The difference of maximum calibration wheel speed value and minimum calibration wheel speed value is compared with preset alarm threshold value；
The tire pressure state of the vehicle is judged according to comparing result.
According to the second aspect of the embodiment of the present application, a kind of tire pneumatic pressure detector is provided, described device includes:
Wheel speed obtains module, for obtaining the wheel speed of each tire in vehicle operation；
Aggregate-value determining module, for tired according to the wheel speed of the acquired each tire of wheel speed calculation within a preset period of time
Evaluation；
Wheel speed value determining module is calibrated, for according to the wheel speed aggregate-value of each tire and the wheel speed calibration factor of the tire
Determine the calibration wheel speed value of each tire；The wheel speed calibration factor is the pre-stored each tire that will meet under calibration condition
Wheel speed be calibrated to the calibration factor of unified wheel speed；
Wheel speed value contrast module is calibrated, for maximum calibration wheel speed value and minimum to be calibrated the difference of wheel speed value with preset
Alarm threshold value comparison；
Tire pressure state detection module, for judging the tire pressure state of the vehicle according to comparing result.
When using the embodiment of the present application, by obtaining the wheel speed of each tire in vehicle operation, and according to acquired
The each tire of wheel speed calculation wheel speed aggregate-value within a preset period of time, according to the wheel speed aggregate-value of each tire and the tire
Wheel speed calibration factor determine the calibration wheel speed value of each tire, by the difference of maximum calibration wheel speed value and minimum calibration wheel speed value
It is compared with preset alarm threshold value, and judges the tire pressure state of the vehicle according to comparing result.Due to without each in vehicle
Sensor, wireless module, power supply are set on tire, it can be to avoid hardware cost, cost of installation and maintenance；Simultaneously by preset time
Wheel speed aggregate-value in section is calculated, can be to avoid instantaneous wheel speed because of the brings wink such as vehicle turning, vibration, wheel-slip
When error；In addition, determining the calibration wheel speed value of each tire according to the wheel speed calibration factor of wheel speed aggregate-value and tire, will calibrate
Wheel speed value is compared, so as to avoid because of diameter of tyres caused by tire newness degree difference, degree of wear difference etc.
The inconsistent defect in the identical situation of air pressure, and then improve the accuracy rate of tire pressure detection.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The application can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application
Example, and together with specification it is used to explain the principle of the application.
Fig. 1 is a kind of the application flow chart of tire pressure detection method shown according to an exemplary embodiment.
Fig. 2 is a kind of the application process of the method for determining wheel speed calibration factor shown according to an exemplary embodiment
Figure.
Fig. 3 is the flow chart of the application another tire pressure detection method shown according to an exemplary embodiment.
Fig. 4 is a kind of the application structural schematic diagram of tire pneumatic pressure detector shown according to an exemplary embodiment.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the application.
It is only to be not intended to be limiting the application merely for for the purpose of describing particular embodiments in term used in this application.
It is also intended in the application and the "an" of singular used in the attached claims, " described " and "the" including majority
Form, unless the context clearly indicates other meaning.It is also understood that term "and/or" used herein refers to and wraps
It may be combined containing one or more associated any or all of project listed.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the application
A little information should not necessarily be limited by these terms.These terms are only used to for same type of information being distinguished from each other out.For example, not departing from
In the case where the application range, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determination ".
In order to realize the detection to tire pressure, pressure biography can be set at the valve inside of each tire in the related technology
Sensor can also be arranged baroceptor in inside tires, then use wireless communication technique by pressure value/gas of each tire
Pressure value is sent to central processing unit, is compared by central processing unit according to preset tire pressure standard value, to judge that tire pressure is
It is no normal.
However this mode, pressure sensor/baroceptor is not only set on each tire, there is provision of wireless
Communication module in order to solve powerup issue also needs that power module is arranged, and hardware cost is very high, installation cost and maintenance cost
It is very high.
In order to avoid problem at high cost, the application discloses a kind of tire pressure detection method, by calculating each tire
Wheel speed aggregate-value within a preset period of time, and the calibration wheel speed value that calibration obtains each tire is carried out to wheel speed aggregate-value, it will
The difference of maximum calibration wheel speed value and minimum calibration wheel speed value is compared with preset alarm threshold value, judged according to comparing result described in
The tire pressure state of vehicle to realize the detection to wheel load using wheel speed avoids that pressure sensor/gas is arranged on vehicle tyre
The brings such as pressure sensor, wireless module, power supply hardware cost, cost of installation and maintenance.
As shown in Figure 1, Fig. 1 is a kind of the application stream of tire pressure detection method shown according to an exemplary embodiment
Cheng Tu includes the following steps 101 to step 105:
In a step 101, the wheel speed of each tire in vehicle operation is obtained.
In the embodiment of the present application, wheel speed is the speed of tire, such as wheel speed can be the linear velocity etc. of tire.As example
Son, due in onboard diagnostic system (On-Board Diagnostic, OBD) include engine speed, speed, steering wheel angle,
The data such as tire wheel speed, therefore wheel speed can be directly obtained from OBD, it is taken turns in addition to this it is possible to be obtained using other modes
The wheel speed of tire, this is no longer going to repeat them.
As it can be seen that the present embodiment directly obtains wheel speed from OBD, avoid that pressure sensor/air pressure is arranged on vehicle tyre
The brings such as sensor, wireless module, power supply hardware cost, cost of installation and maintenance.
In a step 102, the wheel speed aggregate-value according to the acquired each tire of wheel speed calculation within a preset period of time.
After obtaining wheel speed, the wheel speed aggregate-value of each tire within a preset period of time in the vehicle can be calculated.It is default
Period is the preset time for being used to add up wheel speed, and the purpose of accumulative wheel speed is in order to avoid instantaneous wheel speed bring mistake
Difference detection.
In an optional implementation, preset time period can be wheel speed in vehicle operation and meet normal distribution
Time.As it can be seen that the wheel speed for meeting normal distribution is added up, and accumulative wheel speed aggregate-value is compared and is judged,
Can to avoid instantaneous wheel speed relatively in because of the brings instantaneous error such as vehicle turning, vibration, wheel-slip, while will not be by
Detection is caused to postpone in the overlong time of preset time period setting, to avoid delay detection bring loss.
For example, the value range of preset time period can be 4.5 minutes to 5.5 minutes, special in the common scene of setting
Be not preset time period be 5 minutes when, not only can to avoid instantaneous error, but also can to avoid delay detection bring loss.Wherein,
The common scene of setting can be the more gentle road such as highway, excludes snowfield, winding road etc. and seriously affects each vehicle wheel in vehicle
The scene of speed.
In addition, being directed to different scenes, different preset time periods can also be arranged according to the difference of scene.For example,
The corresponding preset time period in winding road preset time segment length more corresponding than gentle highway.
Further, in order to avoid judging by accident caused by situations such as turning, traversing, tyre slip, road surface mistake is especially avoided
It judges by accident caused by situations such as uneven or turning is excessive, in non-common scene, the value of preset time period can be arranged more
Greatly, error is allowed to cancel out each other, to avoid reporting by mistake.For example, the accounting of invalid mileage can be passed through in different application scenarios
Determine the duration of preset time period.Wherein, invalid mileage refers to that vehicle does not have linear uniform motion or approximate linear uniform motion
When mileage.Such as, invalid mileage accounts for 50%, then the preset time period under the scene is than linear uniform motion or approximate uniform rectilinear
Preset time period under movement at least doubles.
In step 103, each wheel is determined according to the wheel speed calibration factor of the wheel speed aggregate-value of each tire and the tire
The calibration wheel speed value of tire.
The wheel speed calibration factor is that the pre-stored wheel speed by each tire met under calibration condition is calibrated to unification
The calibration factor of wheel speed.When determining calibration factor, it can be determined that whether the tire pressure of vehicle meets calibration condition, calibrates meeting
Calibration is just carried out in the case where condition obtains calibration factor.It is normal that calibration condition can be tire pressure, i.e., wheel speed calibration factor be by
The wheel speed of the subnormal each tire of tire pressure is calibrated to the calibration factor of unified wheel speed.Such as can check the tire pressure of each tire,
Judge whether the tire pressure of the tire is normal according to tire pressure detected.For another example, the default normal scene of tire pressure can be preset, pre-
If scene when occurring, then determine that tire pressure is normal.Preset scene can be just to be carried out charging gas, just update to the tire of vehicle
The scenes such as the tire of vehicle.After determining that tire pressure is normal, calibration factor can be determined according to the data in vehicle travel process.
For the calibration for determining each tire according to the wheel speed aggregate-value of each tire and the wheel speed calibration factor of the tire
Wheel speed value, can be different according to the difference of wheel speed calibration factor.For example, when wheel speed calibration factor is the ratio of standard value and wheel speed
When value, the wheel speed aggregate-value of each tire is multiplied with the wheel speed calibration factor of the tire, obtains the calibration wheel speed of each tire
Value.When wheel speed calibration factor is the ratio of wheel speed and standard value, by the wheel speed of the wheel speed aggregate-value of each tire and the tire
Calibration factor is divided by, and obtains the calibration wheel speed value of each tire.
At step 104, by the difference of maximum calibration wheel speed value and minimum calibration wheel speed value with preset alarm threshold value pair
Than.
In this step, the difference of maximum calibration wheel speed value and minimum calibration wheel speed value can be first sought, then by difference with default
Alarm threshold value compare.As it can be seen that the calibration wheel speed value in preset time period is compared, it not only can be to avoid instantaneous wheel
Speed ratio relatively in because of the instantaneous velocitys bring instantaneous error such as vehicle turning, vibration, wheel-slip, can also avoid because of tire
The defect inconsistent in the identical situation of air pressure of diameter of tyres caused by newness degree difference, degree of wear difference etc.；Meanwhile
The difference of maximum calibration wheel speed value and minimum calibration wheel speed value is compared with preset alarm threshold value, it can be to avoid specified two wheels
The wheel speed of tire is compared caused erroneous judgement, improves Detection accuracy.
Alarm threshold value is preset for judging the threshold value of the tire pressure state of vehicle.In one implementation, it reports
The wheel speed of road conditions and vehicle when alert threshold value can be according to type of vehicle, vehicle driving determines, i.e., different types of vehicle exists
It is travelled under different road conditions with different wheel speeds, by testing many times, is reported in the case where tire pressure state correct judgment
Alert threshold value.Below with preset time period for 5 minutes, vehicle type, can to enumerate wherein several groups of data and being illustrated for passenger car
With understanding, it is not limited to following data in testing:
As it can be seen that can subtract when the value range of alarm threshold value can be 8.5km/h to 11.5km/h, especially 10km/h
Small rate of false alarm.
In step 105, the tire pressure state of the vehicle is judged according to comparing result.
In this step, the tire pressure state of vehicle can be judged according to comparing result.In an optional implementation, when
When the difference of the maximum calibration wheel speed value and the minimum calibration wheel speed value is less than alarm threshold value, it is possible to determine that the tire pressure of vehicle
In normal condition.When the difference of the maximum calibration wheel speed value and the minimum calibration wheel speed value is greater than or equal to the alarm
When threshold value, it is possible to determine that the tire pressure of the vehicle is in abnormality.
Further, can also the tire pressure state to the vehicle remind.For example, the tire pressure in vehicle is in normal
It when state, can not remind, tire pressure can also be reminded normal.It is detecting that tire pressure is when in an abnormal state, can alarm
It reminds, user can detect each tire of vehicle according to alarm.
It, then can will most since tire is not in overvoltage condition under normal circumstances in an optional implementation
The corresponding tire of small calibration wheel speed value is judged to having normal tire pressure, when the difference of maximum calibration wheel speed value and minimum calibration wheel speed value
When value is greater than or equal to preset alarm threshold value, determine that the corresponding tire of maximum calibration wheel speed value is in under-voltage condition.
As it can be seen that can detecte source through the above way in the tire of under-voltage condition, avoid caused by artificial gradually detection
Troublesome operation.
In order to reminded in time in tyre underpressure user detect and repairing tyre, avoid damage caused by tyre underpressure,
When determining that the corresponding tire of maximum calibration wheel speed value is in under-voltage condition, warning reminding is carried out to the tire in under-voltage condition.
Wherein, the mode of alarm can be a variety of, such as the prompting of display alarm, flashing lamp or sound prompting etc..Display mentions
Waking up, which can be, carries out display warning note to the tire in under-voltage condition on a display screen.Flashing lamp prompting can be using not
Same lamp, which flashes different colors, to be reminded, such as indicates that four tires, first lamp indicate when dodging red using four lamps
The front-wheel on the left side is under-voltage, and front-wheel when second lamp dodges red on the right of expression is under-voltage etc..Sound prompting can be voice reminder, example
Such as voice broadcast is carried out using under-voltage condition of the voice to different kinds of tyre.Sound prompting can also be that the tinkle of bells is reminded, such as using
Different the tinkle of bells carries out warning reminding etc. to the state of different kinds of tyre.
It is understood that a kind of alerting pattern can be used when warning reminding, a variety of alerting patterns can also be combined.Example
Such as, display screen shows under-voltage tire, and cooperates the tinkle of bells of alarm, then can increase the diversification of prompting, reminds user timely
Inspection and maintenance.
Further, it can be selected the corresponding tire of minimum calibration wheel speed value being determined as having just according to different scenes
Normal tire pressure, or be judged to the corresponding tire of maximum calibration wheel speed value that there is normal tire pressure.For example, determining that current scene is pre-
If special screne when, be judged to the corresponding tire of maximum calibration wheel speed value that there is normal tire pressure.Such as just charge nausea
When vehicle is currently running, in order to avoid that because inflation excessively leads to tyre overpressure, then it is corresponding maximum can be calibrated wheel speed value
Tire is judged to having normal tire pressure.
Based on this, another can be in realization mode, when maximum calibration wheel speed value and the minimum difference for calibrating wheel speed value are big
When alarm threshold value, determine that the corresponding tire of minimum calibration wheel speed value is in overvoltage condition.Further, determining most
When the corresponding tire of small calibration wheel speed value is in overvoltage condition, warning reminding is carried out to the tire in overvoltage condition.
As it can be seen that can detecte source through the above way in the tire of overvoltage condition, avoid caused by artificial gradually detection
Troublesome operation.
As seen from the above-described embodiment, by obtaining the wheel speed of each tire in vehicle operation, and according to acquired
The wheel speed aggregate-value of each tire of wheel speed calculation within a preset period of time, according to the wheel speed aggregate-value of each tire and the tire
Wheel speed calibration factor determines the calibration wheel speed value of each tire, and the difference of maximum calibration wheel speed value and minimum calibration wheel speed value is same
Preset alarm threshold value compares, and the tire pressure state of the vehicle is judged according to comparing result.Due to without on vehicle tyre
Sensor, wireless module, power supply are set, it can be to avoid hardware cost, cost of installation and maintenance；It simultaneously will be in preset time period
Wheel speed aggregate-value is calculated, can be to avoid instantaneous wheel speed because the brings such as vehicle turning, vibration, wheel-slip are instantaneously missed
Difference；In addition, determining the calibration wheel speed value of each tire according to the wheel speed calibration factor of wheel speed aggregate-value and tire, wheel speed will be calibrated
Value is compared, so as to avoid because diameter of tyres caused by tire newness degree difference, degree of wear difference etc. is in gas
Defect inconsistent in identical situation is pressed, and then improves the accuracy rate of tire pressure detection.
In an optional implementation, a kind of method that determining wheel speed calibration factor is also disclosed in the application, such as Fig. 2 institute
Showing, Fig. 2 is a kind of the application flow chart of the method for determining wheel speed calibration factor shown according to an exemplary embodiment, including
Following steps 201 are to step 204:
In step 201, it when the tire pressure of vehicle meets calibration condition, obtains every when the vehicle is run under the tire pressure
The target wheel speed of a tire.
Wherein, target wheel speed is the wheel speed of tire when the tire pressure of vehicle meets calibration condition, for the wheel in same step 101
Speed is distinguished, and is named as target wheel speed herein.
Further, when the tire pressure that target wheel speed is also possible to vehicle meets calibration condition, and vehicle is being predefined
Uniform motion and/or linear motion when each tire wheel speed, the predefined uniform motion and/or linear motion basis
The comparing result of the kinematic feature factor threshold value of the kinematic feature factor and setting of the vehicle determines.
In step 202, the target wheel speed according to the acquired each tire of target wheel speed calculation within a preset period of time
Aggregate-value.
In this step, the mesh of each tire within a preset period of time can be calculated separately according to acquired target wheel speed
Mark wheel speed aggregate-value.
In step 203, the average value of the target wheel speed aggregate-value is calculated.
Wherein, the average value for calculating target wheel speed aggregate-value, which can be, sums target wheel speed aggregate-value, then divided by tire
Number.For example, average value can be calculated using the following equation:
SUM′P=(SUM 'A+SUM′B+SUM′C+SUM′D)/4
Wherein, SUM 'PIndicate average value, SUM 'A、SUM′B、SUM′C、SUM′DRespectively indicate A wheel, B wheel, C wheel and D wheel
Target wheel speed aggregate-value.
In step 204, the wheel of corresponding tire is determined according to the target wheel speed aggregate-value of the average value and each tire
Fast calibration factor.
The present embodiment determines the wheel speed calibration factor of each tire using average value as standard value.It on the one hand, can be by institute
It states average value to be divided by with the target wheel speed aggregate-value of each tire respectively, obtains the wheel speed calibration factor of corresponding tire.
For example, PA=SUM 'P/SUM′A, PB=SUM 'P/SUM′B, PC=SUM 'P/SUM′C, PD=SUM 'P/SUM′D,
In, PAIndicate the wheel speed calibration factor of A wheel, PBIndicate the wheel speed calibration factor of B wheel, PCIndicate the wheel speed calibration factor of C wheel, PD
Indicate the wheel speed calibration factor of D wheel.
On the other hand, the target wheel speed aggregate-value of each tire can be divided by with the average value respectively, is obtained corresponding
The wheel speed calibration factor of tire.
As seen from the above-described embodiment, wheel speed calibration factor is calculated using the target wheel speed aggregate-value in preset time period, it can
To avoid instantaneous wheel speed because of the brings instantaneous error such as vehicle turning, vibration, wheel-slip, thus improve wheel speed calibration because
The accuracy rate of son.
Various technical characteristics in embodiment of above can be arbitrarily combined, as long as the combination between feature is not present
Conflict or contradiction, but as space is limited, it is not described one by one, therefore the various technical characteristics in above embodiment is any
It is combined the range for also belonging to this specification application.
The application enumerates one of combination and is illustrated, as shown in figure 3, Fig. 3 is the application according to an exemplary implementation
The flow chart of another tire pressure detection method exemplified includes the following steps 301 to step 306:
In step 301, the wheel speed of each tire in vehicle operation is obtained.
In step 302, the wheel speed of acquired each tire is added up respectively.
Such as it can be added up respectively using the wheel speed for each tire that following formula will acquire:
SUMA wheel=SUMA wheel+UA wheel
SUMB wheel=SUMB wheel+UB wheel
SUMC wheel=SUMC wheel+UC wheel
SUMD wheel=SUMD wheel+UD wheel
Wherein, SUMA wheel、SUMB wheel、SUMC wheel、SUMD wheelRespectively indicate the wheel speed aggregate-value of A wheel, B wheel, C wheel and D wheel, UA wheel、
UB wheel、UC wheel、UD wheelIt respectively indicates A wheel, B wheel, C wheel and D and takes turns the instantaneous wheel speed currently obtained.
In step 303, judge whether the cumulative time reaches preset time period, if so, obtaining each tire when default
Between wheel speed aggregate-value in section, then enter step 304, otherwise return step 301.
In step 304, each wheel is determined according to the wheel speed calibration factor of the wheel speed aggregate-value of each tire and the tire
The calibration wheel speed value of tire；The wheel speed calibration factor is that the pre-stored wheel speed by each tire met under calibration condition is calibrated
For the calibration factor of unified wheel speed.
In step 305, when the difference of maximum calibration wheel speed value and minimum calibration wheel speed value is greater than or equal to preset report
When alert threshold value, determine that the corresponding tire of maximum calibration wheel speed value is in under-voltage condition.
Within step 306, warning reminding is carried out to the tire in under-voltage condition.
As seen from the above-described embodiment, due to it is not necessary that pressure sensor/baroceptor, wireless mould are arranged on vehicle tyre
Block, power supply, can be to avoid hardware cost, cost of installation and maintenance；The wheel speed in each tire preset time period is carried out simultaneously
It is accumulative, can to avoid instantaneous wheel speed relatively in because of the brings instantaneous error such as vehicle turning, vibration, wheel-slip；In addition also
Wheel speed aggregate-value is calibrated, calibration wheel speed value is compared, so as to avoid because tire newness degree is different, grinds
The defect inconsistent in the identical situation of air pressure of diameter of tyres caused by damage degree difference etc., and then improve the standard of under-voltage detection
True rate.
Corresponding with the embodiment of the application tire pressure detection method, present invention also provides tire pneumatic pressure detectors
Embodiment.
Referring to fig. 4, Fig. 4 is a kind of the application structure of tire pneumatic pressure detector shown according to an exemplary embodiment
Schematic diagram.Described device include: wheel speed obtain module 410, aggregate-value determining module 420, calibration wheel speed value determining module 430,
Calibrate wheel speed value contrast module 440 and tire pressure state detection module 450.
Wherein, the wheel speed obtains module 410, for obtaining the wheel speed of each tire in vehicle operation；
The aggregate-value determining module 420, for according to the acquired each tire of wheel speed calculation within a preset period of time
Wheel speed aggregate-value；
The calibration wheel speed value determining module 430, for according to the wheel speed aggregate-value of each tire and the wheel speed of the tire
Calibration factor determines the calibration wheel speed value of each tire；The wheel speed calibration factor is pre-stored will to meet under calibration condition
The wheel speed of each tire be calibrated to the calibration factor of unified wheel speed；
The calibration wheel speed value contrast module 440, for maximum calibration wheel speed value and minimum to be calibrated to the difference of wheel speed value
It is compared with preset alarm threshold value；
The tire pressure state detection module 450, for judging the tire pressure state of the vehicle according to comparing result.
As seen from the above-described embodiment, by obtaining the wheel speed of each tire in vehicle operation, and according to acquired
The wheel speed aggregate-value of each tire of wheel speed calculation within a preset period of time, according to the wheel speed aggregate-value of each tire and the tire
Wheel speed calibration factor determines the calibration wheel speed value of each tire, and the difference of maximum calibration wheel speed value and minimum calibration wheel speed value is same
Preset alarm threshold value compares, and the tire pressure state of the vehicle is judged according to comparing result.Due to without on vehicle tyre
Sensor, wireless module, power supply are set, it can be to avoid setting bring hardware cost, cost of installation and maintenance；It will preset simultaneously
Wheel speed aggregate-value in period is calculated, can be to avoid instantaneous wheel speed because vehicle turning, vibration, wheel-slip etc. are brought
Instantaneous error；In addition, the calibration wheel speed value of each tire is determined according to the wheel speed calibration factor of wheel speed aggregate-value and tire, it will
Calibration wheel speed value is compared, so as to avoid because of tire caused by tire newness degree difference, degree of wear difference etc.
Diameter defect inconsistent in the identical situation of air pressure, and then improve the accuracy rate of tire pressure detection.
In an optional implementation, described device further includes calibration factor determining module (Fig. 4 is not shown).
The calibration factor determining module, for when the tire pressure of vehicle meets calibration condition, obtaining the vehicle at this
The target wheel speed of each tire when being run under tire pressure；Within a preset period of time according to the acquired each tire of target wheel speed calculation
Target wheel speed aggregate-value；Calculate the average value of the target wheel speed aggregate-value；According to the mesh of the average value and each tire
Mark wheel speed aggregate-value determines the wheel speed calibration factor of corresponding tire.
In an optional implementation, the preset time period is that wheel speed meets normal distribution in vehicle operation
Time.
As seen from the above-described embodiment, the wheel speed for meeting normal distribution is added up, and by accumulative wheel speed aggregate-value into
Row relatively and judgement, can to avoid instantaneous wheel speed bring instantaneous error, while will not due to preset time period be arranged when
Between it is too long cause detection postpone, thus avoid delay detection bring loss.
In an optional implementation, the tire pressure state detection module includes tire pressure state-detection submodule (Fig. 4
It is not shown).
Wherein, the tire pressure state-detection submodule, for being taken turns when the maximum calibration wheel speed value and the minimum calibration
When the difference of speed value is greater than or equal to the alarm threshold value, determine that the tire pressure of the vehicle is in abnormality.
As seen from the above-described embodiment, when the difference of the maximum wheel speed aggregate-value and the minimum wheel speed aggregate-value is greater than or
When equal to the alarm threshold value, it is possible to determine that the tire pressure of the vehicle is in abnormality, so as to user to the tire of vehicle into
Row inspection and maintenance.
In an optional implementation, it includes: the maximum wheel speed aggregate-value pair that the tire pressure, which is in abnormality,
The tire answered is in under-voltage condition.
As seen from the above-described embodiment, can detecte source through the above way in the tire of under-voltage condition, avoid manually by
Troublesome operation caused by step detects.
In another optional implementation, it includes: the minimum wheel speed aggregate-value that the tire pressure, which is in abnormality,
Corresponding tire is in overvoltage condition.
As seen from the above-described embodiment, can detecte source through the above way in the tire of overvoltage condition, avoid manually by
Troublesome operation caused by step detects.
In an optional implementation, described device further includes tire pressure reminding module (Fig. 3 is not shown).
Wherein, the tire pressure reminding module is reminded for the tire pressure state to the vehicle.For example, tire pressure is reminded
Module is used to carry out the tire in under-voltage condition when determining that the corresponding tire of maximum calibration wheel speed value is in under-voltage condition
Warning reminding.For another example, tire pressure reminding module is used for when determining that the corresponding tire of minimum calibration wheel speed value is in overvoltage condition, right
Tire in overvoltage condition carries out warning reminding.
The function of modules and the realization process of effect are specifically detailed in the above method and correspond to step in above-mentioned apparatus
Realization process, details are not described herein.
For device embodiment, since it corresponds essentially to embodiment of the method, so related place is referring to method reality
Apply the part explanation of example.The apparatus embodiments described above are merely exemplary, wherein described be used as separation unit
The module of explanation may or may not be physically separated, and the component shown as module can be or can also be with
It is not physical module, it can it is in one place, or may be distributed on multiple network modules.It can be according to actual
The purpose for needing to select some or all of the modules therein to realize application scheme.Those of ordinary skill in the art are not paying
Out in the case where creative work, it can understand and implement.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the application
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the application, these modifications, purposes or
Person's adaptive change follows the general principle of the application and including the undocumented common knowledge in the art of the application
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the application are by following
Claim is pointed out.
It should be understood that the application is not limited to the precise structure that has been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.Scope of the present application is only limited by the accompanying claims.
Claims (10)
1. a kind of tire pressure detection method, which is characterized in that the described method includes:
Obtain the wheel speed of each tire in vehicle operation；
According to the wheel speed aggregate-value of the acquired each tire of wheel speed calculation within a preset period of time；
The calibration wheel speed value of each tire is determined according to the wheel speed calibration factor of the wheel speed aggregate-value of each tire and the tire；Institute
Stating wheel speed calibration factor is the calibration that the pre-stored wheel speed by each tire met under calibration condition is calibrated to unified wheel speed
The factor；
The difference of maximum calibration wheel speed value and minimum calibration wheel speed value is compared with preset alarm threshold value；The alarm threshold value base
The wheel speed of road conditions and vehicle when type of vehicle, vehicle driving determines；
The tire pressure state of the vehicle is judged according to comparing result.
2. the method according to claim 1, wherein the determination step of the wheel speed calibration factor, comprising:
When the tire pressure of vehicle meets calibration condition, the target wheel of each tire when the vehicle is run under the tire pressure is obtained
Speed；
According to the target wheel speed aggregate-value of the acquired each tire of target wheel speed calculation within a preset period of time；
Calculate the average value of the target wheel speed aggregate-value；
The wheel speed calibration factor of corresponding tire is determined according to the target wheel speed aggregate-value of the average value and each tire.
3. the method according to claim 1, wherein the tire pressure shape for judging the vehicle according to comparing result
State, comprising:
When the difference of the maximum calibration wheel speed value and the minimum calibration wheel speed value is greater than or equal to the alarm threshold value, sentence
The tire pressure of the fixed vehicle is in abnormality；It includes: that the maximum calibration wheel speed value is corresponding that the tire pressure, which is in abnormality,
Tire be in under-voltage condition or the corresponding tire of the minimum calibration wheel speed value be in overvoltage condition, wherein be based on working as front court
The corresponding tire of minimum calibration wheel speed value is determined as thering is normal tire pressure by scape, or the corresponding tire of maximum calibration wheel speed value is sentenced
It is set to normal tire pressure.
4. the method according to claim 1, wherein the preset time period is that wheel speed is full in vehicle operation
The time of sufficient normal distribution.
5. method according to any one of claims 1 to 4, which is characterized in that the method also includes:
The tire pressure state of the vehicle is reminded.
6. a kind of tire pneumatic pressure detector, which is characterized in that described device includes:
Wheel speed obtains module, for obtaining the wheel speed of each tire in vehicle operation；
Aggregate-value determining module, for accumulative according to the wheel speed of the acquired each tire of wheel speed calculation within a preset period of time
Value；
Wheel speed value determining module is calibrated, for determining according to the wheel speed aggregate-value of each tire and the wheel speed calibration factor of the tire
The calibration wheel speed value of each tire；The wheel speed calibration factor is the pre-stored wheel by each tire met under calibration condition
Speed is calibrated to the calibration factor of unified wheel speed；
Wheel speed value contrast module is calibrated, for maximum to be calibrated to the difference of wheel speed value and minimum calibration wheel speed value with preset alarm
Threshold comparison；The wheel speed of road conditions and vehicle when the alarm threshold value is based on type of vehicle, vehicle driving determines；
Tire pressure state detection module, for judging the tire pressure state of the vehicle according to comparing result.
7. device according to claim 6, which is characterized in that described device further includes calibration factor determining module, is used for
When the tire pressure of vehicle meets calibration condition, the target wheel speed of each tire when the vehicle is run under the tire pressure is obtained；Root
According to the target wheel speed aggregate-value of the acquired each tire of target wheel speed calculation within a preset period of time；Calculate the target wheel speed
The average value of aggregate-value；The wheel speed calibration of corresponding tire is determined according to the target wheel speed aggregate-value of the average value and each tire
The factor.
8. device according to claim 6, which is characterized in that the tire pressure state detection module includes:
Tire pressure state-detection submodule, for being greater than when the difference of the maximum calibration wheel speed value and the minimum calibration wheel speed value
Or when being equal to the alarm threshold value, determine that the tire pressure of the vehicle is in abnormality；The tire pressure includes: in abnormality
The corresponding tire of the maximum calibration wheel speed value be in under-voltage condition or the minimum corresponding tire of wheel speed value of calibrating was in
Pressure condition, wherein the corresponding tire of minimum calibration wheel speed value is determined as thering is normal tire pressure based on current scene, or will be maximum
The corresponding tire of calibration wheel speed value is judged to having normal tire pressure.
9. device according to claim 6, which is characterized in that the preset time period is that wheel speed is full in vehicle operation
The time of sufficient normal distribution.
10. according to any device of claim 6 to 9, which is characterized in that described device further includes tire pressure reminding module,
It is reminded for the tire pressure state to the vehicle.
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| CN201610173405.4A CN105818618B (en) | 2016-03-24 | 2016-03-24 | Tire pressure detection method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107867131A (en) * | 2016-09-27 | 2018-04-03 | 深圳联友科技有限公司 | A kind of vehicle safety monitoring method and system |
| CN108263151B (en) * | 2016-12-30 | 2020-02-21 | 比亚迪股份有限公司 | Automobile and tire pressure monitoring method thereof |
| CN107719032A (en) * | 2017-08-21 | 2018-02-23 | 北汽福田汽车股份有限公司 | Monitoring method, device and the vehicle of abnormal tyre pressure |
| CN108454327B (en) * | 2018-01-26 | 2020-11-20 | 深圳市元征科技股份有限公司 | Tire pressure detection method, device and terminal |
| CN114648414B (en) * | 2022-05-20 | 2022-10-04 | 深圳联友科技有限公司 | Automobile tire insurance risk evaluation and control method and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5569848A (en) * | 1995-01-06 | 1996-10-29 | Sharp; Everett H. | System, method and apparatus for monitoring tire inflation pressure in a vehicle tire and wheel assembly |
| CN101306638A (en) * | 2008-04-30 | 2008-11-19 | 燕山大学 | Method monitoring air pressure of automobile tire in running |
| CN101391564A (en) * | 2008-10-24 | 2009-03-25 | 汕头市新桥汽车电子有限公司 | Monitoring method for variation of automotive tire pressure and system for implementing monitoring method |
| CN104589932A (en) * | 2015-01-16 | 2015-05-06 | 张海涛 | Indirect type tyre pressure monitoring method and device |
| CN104999865A (en) * | 2015-07-13 | 2015-10-28 | 杭州联云汽车科技有限公司 | Indirect tire pressure monitoring method based on OBD interface |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1491165A (en) * | 2001-02-08 | 2004-04-21 | ��ʽ�����ձ��Զ�����Ʒ�ۺ��о��� | Tire pneumatic pressure detector |
| JP3971720B2 (en) * | 2003-06-09 | 2007-09-05 | 住友ゴム工業株式会社 | Tire pressure drop detection method and apparatus, and tire decompression determination program |
-
2016
- 2016-03-24 CN CN201610173405.4A patent/CN105818618B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5569848A (en) * | 1995-01-06 | 1996-10-29 | Sharp; Everett H. | System, method and apparatus for monitoring tire inflation pressure in a vehicle tire and wheel assembly |
| CN101306638A (en) * | 2008-04-30 | 2008-11-19 | 燕山大学 | Method monitoring air pressure of automobile tire in running |
| CN101391564A (en) * | 2008-10-24 | 2009-03-25 | 汕头市新桥汽车电子有限公司 | Monitoring method for variation of automotive tire pressure and system for implementing monitoring method |
| CN104589932A (en) * | 2015-01-16 | 2015-05-06 | 张海涛 | Indirect type tyre pressure monitoring method and device |
| CN104999865A (en) * | 2015-07-13 | 2015-10-28 | 杭州联云汽车科技有限公司 | Indirect tire pressure monitoring method based on OBD interface |
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