CN107399207A - Tire monitor method - Google Patents
Tire monitor method Download PDFInfo
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- CN107399207A CN107399207A CN201610329698.0A CN201610329698A CN107399207A CN 107399207 A CN107399207 A CN 107399207A CN 201610329698 A CN201610329698 A CN 201610329698A CN 107399207 A CN107399207 A CN 107399207A
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- tire
- state
- road surface
- acceleration
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Classifications
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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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Human Computer Interaction (AREA)
- Automation & Control Theory (AREA)
- Tires In General (AREA)
Abstract
A kind of tire monitor method, includes the following steps：The rotating speed of a tire is detected in vehicle traveling；When rotating speed reaches a desired speed scope, by state during at least sensor detecting tyre rotation, to form a first state data；By the first state data and multiple road surface characteristic comparings, with one of those road surface characteristic data corresponding to obtaining；Computing is carried out according to acquired road surface characteristic data and the first state data, to filter out possessed road surface characteristic in the first state data, obtains one second status data；According to second status data, judge whether the state of the tire is abnormal, and an information warning is sent in exception.Thereby, the security of driving is increased.
Description
Technical field
The present invention relates to tire monitor；More particularly to a kind of tire monitor side that tire condition is monitored in vehicle traveling
Method.
Background technology
The wireless monitor system of the vehicle of prior art is to be used to monitor tire pressure, tire temperature mostly, and the wireless monitor system includes
There are multiple monitors and a receiver, those monitors are respectively arranged on each tire of vehicle, to detect the tire of tire
Pressure, tire temperature and transmission are loaded with tire pressure, the wireless signal of tire temperature data to the receiver.The receiver receives the respectively monitor and sent out
After the tire pressure sent, tire pressure, tire temperature are monitored, abnormal initial stage occurs in pressure of tire, tire temperature, that is, gives a warning, with up to
To the effect of pre- runflat, casualty accident is avoided.
The wireless monitor system of prior art be only limitted to detect tire pressure, tire temperature, how wireless monitor system framework it
Under increase further function again, with improve vehicle traveling security, be develop wireless monitor system dealer make great efforts mesh
Mark.
The content of the invention
In view of this, can be by during detecting tyre rotation it is an object of the invention to provide a kind of tire monitor method
State judges whether tire is abnormal.
To reach above-mentioned purpose, a kind of tire monitor method provided by the invention is applied to a vehicle, includes following step
Suddenly：
A, the rotating speed of an at least tire for the vehicle is detected in vehicle traveling；
B, when the rotating speed that measures reaches a desired speed scope, by during at least sensor detecting tyre rotation
State, to form an at least first state data, the wherein first state data have a road surface characteristic；
C, by multiple road surface characteristic comparings in the first state data and a database, to obtain and first shape
One of those road surface characteristic data corresponding to state data, wherein those road surface characteristic data correspond to a variety of different respectively
Road surface；
D, computing is carried out according to acquired road surface characteristic data and the first state data, to filter out the first state number
The possessed road surface characteristic in, obtain one second status data；
E, according to second status data, judge whether the state of the tire is abnormal, and warning letter is sent in exception
Breath.
Effect of the invention is that the state by sensor detecting tire when rotating, and after filtering out road surface characteristic, can
The initial data of sensor is obtained, whether state when tyre rotation can be accurately judged by initial data is abnormal, increase row
The security of car.
Brief description of the drawings
The wireless monitor system that Fig. 1 is applied by a preferred embodiment of the present invention.
Fig. 2 is the monitor block diagram of the above-mentioned preferred embodiment of the present invention.
Fig. 3 is the receiver and vibrations arrangement for detecting block diagram of the above-mentioned preferred embodiment of the present invention.
Fig. 4 is the tire monitor method flow diagram of the above-mentioned preferred embodiment of the present invention.
Fig. 5 is a schematic diagram, is rocked caused by showing off-front wheel imbalance.
Fig. 6 is a schematic diagram, and display off-front wheel produces camber angle.
Fig. 7 is a schematic diagram, the toe-in angle that display off-front wheel is deflected outward.
【Symbol description】
[present invention]
100 wireless monitor systems
10 monitors
The sound pick-up of 122 tyre pressure sensor, 124 shock sensor 126
The first processor of 128 first gravity accelerometer 14
16 wireless signal transtation mission circuits
20 receivers
22 wireless signal receiving circuits
The internal memory of 24 second processor 242
26 second gravity accelerometers
28 gyroscopes
200 vehicles
The vehicular computer of 202 tire, 204 car body 206
208 displays
The toe-in angle of 1 angle excursion θ of θ, 2 inclination angle thetas 3
D direct of travels
I center lines
L plumb lines
P reference planes
Embodiment
For the present invention can be illustrated more clearly that, now enumerates a preferred embodiment and coordinate accompanying drawing to describe in detail as after.It please join
Shown in Fig. 1, by the detection method of a preferred embodiment of the present invention wheel balance apply for wireless monitor system 100, the nothing
Line monitoring system 100 is arranged on a vehicle 200, and includes multiple receivers 20 of monitor 10 and one.
Those monitors 10 are respectively installed in the different tire 202 of the vehicle 200.The structure of those monitors 10 all phases
Together, now enumerate exemplified by wherein one monitor 10 and illustrate.
Referring to Fig. 2, the monitor 10 includes a tyre pressure sensor 122, one with shock sensor (shock sensor)
The sensor by taking sound pick-up 126 as an example of sensor exemplified by 124, one, one are with the first gravity accelerometer (G-sensor)
Sensor, a first processor 14 and a wireless signal transtation mission circuit 16 exemplified by 128.The tyre pressure sensor 122 is used to sense
The tire pressure of tire.The shock sensor 124 senses the rotational frequency of tire 202, and exports the one of the rotational frequency of corresponding tire 202
Electric signal, because the shock sensor 124 rotates with the tire 202, therefore the frequency of the electric signal of the shock sensor 124 output
Rate is the rotational frequency of the tire 202.In addition, the shock sensor 124 is also produced when the tire 202 rotates to detect
Vibrations.The sound of caused vibrations when the sound pick-up 126 is to detect the tire 202 rotation.First acceleration of gravity
Sensor 128 is used to detect caused acceleration of gravity when the tire 202 rotates, and in the present embodiment, first gravity accelerates
Degree sensor 128 is three axle Gravity accelerometers, and the axial gravity of the tangent line of Y-axis detecting tire circumferentially accelerates
Degree, the horizontal axial acceleration of gravity of X-axis detecting tire, Z axis are (i.e. vertical with the axial direction of Y-axis in vertical X axis for detecting tire
In ground direction) acceleration of gravity.The first processor 14 is sent by the wireless signal transtation mission circuit 16 with wireless signal
Tire pressure data.
It please coordinate Fig. 3, the receiver 20 is arranged in the car body 204 of the vehicle 200, including a wireless signal receiving circuit
22 and a second processor 24, the second gravity accelerometer 26 and a gyroscope 28.The wireless signal receiving circuit 22 connects
The respectively wireless signal transmitted by the monitor 10 is received, to obtain tire pressure.The receiver 20 is electrically connected with the one of the vehicle 200
The tire pressure received is sent to the vehicular computer 206 and by a display by vehicular computer 206, the receiver 20
208 displays.The vehicular computer 206 also receives the information during vehicle 200 travels, such as turn of speed, engine speed, steering wheel
Dynamic direction.Caused acceleration of gravity when second gravity accelerometer 26 is to detect the car body 204 vibration.The top
Spiral shell instrument 28 is detecting the direct of travel of the car body 204.
By above-mentioned structure, you can perform the tire monitor method shown in Fig. 4.
First, establish a database and be stored in an internal memory 242 of the second processor 24, the database includes more
Individual road surface characteristic data, those road surface characteristic data correspond to respectively a variety of different road surfaces (such as asphalt surface, cement pavement,
Brick road surface etc.).Respectively the road surface characteristic data use new tire in the vehicle 200, and after carrying out balance correction, four-wheel aligner,
The vehicle 200 is travelled on foregoing a variety of road surfaces respectively, and actually with those sensor (shock sensor 124, pickups
Device 126, the first gravity accelerometer 128) measurement tire 202 state and obtain.Respectively the road surface characteristic data include
The tire state data that those sensors are surveyed, i.e., the sound that shock sensor 124 measures vibration data, sound pick-up 126 measure
Acceleration information measured by sound data, the first gravity accelerometer 128.Acquired road surface is special on different road surfaces
It is different to levy data, thereby, the basis as a comparison.
Then, the rotating speed of at least one tire 202 is detected in the vehicle 200 traveling, each monitor 10 of the present embodiment
The rotating speed of the frequency corresponding tire 202 of electric signal that is exported by the shock sensor 124 of the first processor 14, the telecommunications
Number can be analog signal or data signal.In one desired speed scope of turn up, pass through those sensor (shock sensors
124th, sound pick-up 126, the first gravity accelerometer 128) detect the tire 202 rotate when state, with formed one first
Status data, the first state packet contain one first vibration data, one first voice data, one first acceleration information, and
First vibration data, first voice data, first acceleration information distinctly have the road that the current vehicle 200 is travelled
The road surface characteristic in face.Then, respectively the first processor 14 respectively the first state data will be sent out by wireless signal transtation mission circuit 16
Send.In practice, the state detected the scheduled time slot after reaching the desired speed scope Nei when the tire 202 rotates can be set in
And first state data are sent, the scheduled time slot may be set to 10 minutes, then stop detecting more than the scheduled time slot, to save prison
Survey the electric power of device.
By the wireless signal receiving circuit 22 of the receiver 20 receive the respectively first state data and transmit to this second
Manage device 24, the second processor 24 is by those road surface characteristic numbers in any first state data received and the database
According to comparison, such as first vibration data of analysis first state data, first voice data, first acceleration information respectively
Vibration data, voice data, the similarity degree of acceleration information with those road surface characteristic data, and then find out those road surfaces spy
It is most one of close with the first state data among sign data, to obtain and the road surface characteristic corresponding to the first state data
Data.Foregoing analysis mode can be used with frequency domain and/or time domain to analyze and find out close person.Preferably, be vibrations, sound,
The data of acceleration three are all analyzed, and three is corresponding with the road surface of current vehicle 200 traveling to be most similar
Road surface characteristic data.Certainly can also compare one of vibrations, sound, acceleration or wherein two.
Then, the second processor 24 carries out computing according to acquired road surface characteristic data and the first state data,
To filter out possessed road surface characteristic in the first state data, one second status data is obtained, second status data includes
One second vibration data, a second sound data, one second acceleration information.In other words, second vibration data, the rising tone
The road surface characteristic on the road surface that sound data, second acceleration information have been travelled without the current vehicle, i.e. corresponding tire 202
State.Can be as exactly judging whether tire 202 is abnormal foundation by second status data.
The second processor can at least judge wheel balance, tire positioning and tire aging according to second status data
The exception of three kinds of situations, in the determination methods of rear this three kinds of situations of explanation.
First, wheel balance
Wheel balance be tire 202 during high-speed rotation, due to counterweight it is bad caused by rock, it is rocked will
Make tire result from laterally on relative to a reference planes a deflection angle θ 1 change (as shown in Figure 5 by taking off-front wheel as an example
Illustrate), wherein reference planes P tires after balancing adjustment parallel to the plane of tyre surface.
When the second processor 24 judges that the tire 202 rotates according to the second acceleration information in second status data
In the acceleration of gravity (acceleration of gravity in the transverse direction of tire 202) of X-axis, then the gravity according to X-axis in second status data
Acceleration carry out computing with to should tire 202 deflection angle θ 1, and when deflection angle θ 1 is more than a predetermined angular,
Judge the state of the tire 202 to be abnormal.For example, when tire 202 balances, tire 202 is flat with the reference in the horizontal
When face P is parallel, by reference to gravitational acceleration information when pre-establishing balance in the internal memory 242, then again with second
Acceleration information compares, you can extrapolates tire 202 in the horizontal relative to reference planes P deflection angle θ 1.During calculating
Can be with the X-axis acceleration information computing in the second acceleration information, or extrapolated in X-axis with Y-axis and Z axis acceleration information computing
On acceleration of gravity, and then carry out computing.In addition to calculating deflection angle θ 1 with the change of acceleration of gravity, in practice,
Also computing can directly directly be carried out with the X-axis acceleration of gravity of the second acceleration information in second status data, to judge
Whether deflection angle θ 1 is abnormal, such as under normal condition, acceleration of gravity is the cyclically-varying between +/- 1G in transverse direction, partially
When swinging θ 1 is abnormal, acceleration of gravity is more than +/- 3G in transverse direction.Acceleration of gravity when the tire 202 rotates in transverse direction
During more than +/- 3G, it is judged as exception.
In addition, when producing the situation of upper and lower bounce in rotation process when tire 202 is uneven, also can by this second
Z axis (i.e. perpendicular to ground direction) acceleration of gravity of the second acceleration information in status data judges Z axis acceleration of gravity
Amplitude size, and when amplitude is more than a preset range, judge the state of the tire to be abnormal.For example, normal condition
Under, the amplitude of Z axis acceleration of gravity is the cyclically-varying between +/- 1G, is produced when tire 202 is uneven in rotation process
During the situation of raw upper and lower bounce, when the amplitude of the upward acceleration of gravity of Z axis is more than predetermined amplitude scope (such as +/- 3G), judge
For exception.
It is that tire 202 produces vibrations, therefore, the second processing that tire 202, which rocks adjoint, in being travelled by vehicle 200
Device 24 can also judge according to the second sound data in second status data tire 202 rotate when caused sound whether
It is abnormal.In the present embodiment, the second processor 24 is according in the second sound data in second status data and the internal memory 242
The reference voice comparing stored in advance, to judge whether the state of the tire 202 is exception, wherein the reference voice number
According to be tire 202 after balancing adjustment, travel in flat road surface and obtained through filtering out the road surface characteristic of flat road surface, because
This, second sound data occur noise relative to the reference voice data, you can the state for learning the tire 202 is injustice
Weighing apparatus.In practice, also the second sound data can be filtered out sound beyond an audiorange with bandpass filtering, it is inessential to exclude
Audio.
In addition, the second processor 24 also can judge the tire according to the second vibration data in second status data
Whether 202 caused vibrations when rotating are abnormal.In the present embodiment, the second processor 24 is according in second status data
Second vibration data one is compared with reference to vibration data with what is stored in advance in the internal memory 242, to judge that the state of the tire 202 is
It is no to be abnormal, wherein this with reference to vibration data be tire after balancing adjustment, travel in flat road surface and flat through filtering out
The road surface characteristic on road surface and obtain, therefore, when the second vibration data occurs abnormal vibrations relative to this with reference to vibration data, you can
The state for learning the tire 202 is imbalance.In practice, also the second sound data can be filtered out a specific frequency with bandpass filtering
Vibration frequency beyond scope, to exclude non-essential vibration frequency.
In practice, in order to further exclude the factor on road surface, it is ensured that tire 202 is uneven, the second processor
24 more detect the vibration frequency of car body 204 by second gravity accelerometer 26, according to the vibration frequency and the internal memory
The 242 reference vibration frequencies stored in advance compare, to judge whether the vibration of the car body 204 is normal vibration.The present embodiment
When being consistent with the vibration frequency with this with reference to vibration frequency, the car body 204 is judged for normal vibration, in the normal vibration of car body 204
And following either case is when occurring, the state of the tire 202 is judged for extremely, wherein：
When the normal vibration of car body 204 and deflection angle θ 1 are more than the predetermined angular, the state for judging the tire 202 is
It is abnormal；In the normal vibration of car body 204 and the second acceleration information Z axis to the amplitude of normal acceleration be more than predetermined amplitude model
When enclosing, judge the state of the tire 202 to be abnormal；In the normal vibration of car body 204 and second sound data sound is referred to relative to this
When sound data occur noise, judge the state of the tire 202 to be abnormal；In the normal vibration of car body 204 and the second vibration data
When occurring abnormal vibrations with reference to vibration data relative to this, judge the state of the tire 202 to be abnormal.
2nd, tire positions
Tire positioning judges whether exception by the inclination angle of detecting tire with toe-in angle (toe).It please coordinate Fig. 6, inclination angle theta
2 center line i of the definition for tire 202 and the angle between the plumb line L on ground, it is outside that Fig. 6 show off-front wheel
Tilt.It please coordinate Fig. 7, toe-in angle
Angle of θ 3 definition between the center line i and the direct of travel D of car body 204 of tire 202, before Fig. 7 show the right side
Take turns the toe-in angle θ 3 being deflected outward.
When the second processor 24 judges that the tire 202 rotates according to the second acceleration information in second status data
Z axis to acceleration of gravity, then according to the acceleration of gravity of Z axis in second status data carry out computing with to should tire
202 inclination angle theta 2, and when the inclination angle theta 2 exceeds outside one first predetermined angular range, the state of the tire is judged to be abnormal,
After the completion of wherein first predetermined angular range refers to that tire 202 positions, the scope at the inclination angle under normal condition, such as with 0 degree
It is first predetermined angular range that (10 degree of 202 flare of tire) is spent in (the center line i of tire 202 is perpendicular to the ground)~+10.It is foregoing
Be to illustrate by taking the flare of tire 202 as an example, but be not limited, in practice, the first predetermined angular range can also be tire 202 to
The angle of introversion, or tire 202 is lean-in and the angular range for the totalling that leans outward.For example, when positioning completion with tire,
Based on tire change in gravitational acceleration measured on Z axis and establish in the internal memory 242, when the inclination angle theta 2 of tire 202 changes
During change, the change of acceleration of gravity changes therewith, and the inclination angle of tire 202 can be extrapolated by the change of both acceleration of gravity
θ2.In addition to calculating inclination angle theta 2 with the change of acceleration of gravity, in practice, the acceleration of gravity that also can directly measure is direct
Carry out computing, to judge whether inclination angle theta 2 abnormal, such as under normal condition, on Z axis acceleration of gravity be between +/- 1G the cycle
Property change, when inclination angle theta 2 is abnormal, when acceleration of gravity is more than +/- 3G on Z axis.When the tire 202 rotates, the gravity of Z axis accelerates
When degree is more than +/- 3G, it is judged as exception.
Due to the asymmetry of inclination angle theta 2 of left and right wheel, to will also result in positioning bad, therefore, can also be used left and right two it is relative
On tire 202 (by taking the near front wheel and off-front wheel as an example) measured by the first gravity accelerometer 128 of monitor 10 first
The first acceleration information in status data one of compared with the acceleration information in those road surface characteristic data, to take
Acceleration information in road surface characteristic data corresponding to obtaining, and computing is carried out, to filter out the spy of the road surface in the first acceleration information
Sign, and respectively obtain the second acceleration information of two the second status datas.Then pushed away according to two second acceleration informations
The inclination angle theta 2 of the near front wheel and off-front wheel is calculated, and when the inclination angle theta 2 of two tires 202 is asymmetric, judges two tires
202 state is abnormal.For example, a tyre toe-out, a tire introversion, then be judged as exception.
In addition, the first acceleration information that can also be used measured by the first gravity accelerometer 128 filters out road surface spy
After sign, the acceleration of gravity of Y-axis is calculated by the second acceleration information.Meanwhile second processor 24 reads the gyroscope 28 and surveyed
The data obtained, and the direct of travel D of car body is obtained, and the acceleration of gravity according to Y-axis in the second acceleration information and traveling side
To D carry out computing with to should tire 202 toe-in angle θ 3, toe-in angle θ 3 exceed one second predetermined angular range outside when,
The state of the tire 202 is judged to be abnormal, after the completion of wherein second predetermined angular range refers to that tire 202 positions, normal shape
The scope of toe-in angle θ 3 under state, such as spend (tire with 0 degree of (the center line i of tire 202 is parallel with direct of travel D)~+10
202 center line i are relative to 10 degree of direct of travel D flares) it is second predetermined angular range.It is foregoing be with tire 202 relative to
Illustrate exemplified by direct of travel D flares, but be not limited, in practice, the second predetermined angular range can also be that tire 202 is relative
In the angle that direct of travel D is lean-in, or tire 202 is relative to direct of travel D is lean-in and the angle model for the totalling that leans outward
Enclose.In addition to calculating toe-in angle θ 3 with the change of acceleration of gravity, in practice, the acceleration of gravity that also can directly measure is straight
Row computing is tapped into, to judge whether toe-in angle θ 3 is abnormal, such as under normal condition, acceleration of gravity is between +/- 1G in Y-axis
Cyclically-varying, when toe-in angle θ 3 is abnormal, when acceleration of gravity is more than +/- 3G in Y-axis.The Y-axis when the tire 202 rotates
When acceleration of gravity is more than +/- 3G, it is judged as exception.
Direct of travel except obtaining the car body 204 with the gyroscope 28, also can be by the vehicular computer 206 or by vehicle body
The rotation direction of steering wheel is obtained on network, the rotation direction of steering wheel is the direct of travel D of corresponding car body 204.
3rd, tire aging
First voice data of the second processor 24 measured by by the sound pick-up 126, is obtained through filtering out road surface characteristic
After second sound data, by the second sound data and the reference voice comparing stored by the internal memory 242, to judge to take turns
Whether the state of tire 202 is abnormal.For example, because the rubber of tire hardens, the sound frequency during rotation of tire 202 is caused to change,
By the frequency for comparing second sound data relative to the sound frequency of the reference voice data, judge when differing certain degree
For exception.
In addition, the second processor 24 also can be by the first vibration data measured by the shock sensor 124, through filtering out
After road surface characteristic obtains the second vibration data, second vibration data and this stored by the internal memory 242 are referred into vibration data
Compare, to judge whether the state of tire is abnormal.For example, because tire rubber harden, cause vibration frequency to change, by than
The vibration frequency of vibration data is referred to relative to this to the frequency of the second vibration data, is judged as when differing certain degree different
Often.
Either wheel balance is abnormal, tire positions exception or tire aging is abnormal, and the second processor 24 is judging to take turns
During tire exception, an information warning will be sent, exception occurs for the state for using prompting user tire 202.The information warning can pass through
Vehicular computer 206 or it is shown on the display 208 by vehicle body network, or is sent in the form of sound or light,
Also different exceptions can be corresponded to and sends different information warnings.
It is mentioned above, the present invention by monitor by state during sensor detecting tyre rotation, and filter out road surface spy
After sign, the initial data of sensor is can obtain, whether state when tyre rotation can be accurately judged by initial data is abnormal,
It is effectively increased the security of driving.
It the foregoing is only preferably possible embodiments of the invention, all application description of the invention and claims
The equivalence changes made, it ought to be included in the scope of the claims of the present invention.
Claims (12)
1. a kind of tire monitor method, applied to a vehicle, includes the following steps：
A, the rotating speed of an at least tire for the vehicle is detected in vehicle traveling；
B, when the rotating speed measured reaches a desired speed scope, shape during at least sensor detecting tyre rotation is passed through
State, to form an at least first state data, the wherein first state data have a road surface characteristic；
C, by multiple road surface characteristic comparings in the first state data and a database, to obtain and the first state number
According to one of those corresponding road surface characteristic data, wherein those road surface characteristic data correspond to a variety of different roads respectively
Face；
D, computing is carried out according to acquired road surface characteristic data and the first state data, to filter out in the first state data
Possessed road surface characteristic, obtain one second status data；
E, according to second status data, judge whether the state of the tire is abnormal, and an information warning is sent in exception.
2. the sensor is a gravity accelerometer in tire monitor method as claimed in claim 1, wherein step B,
Acceleration of gravity during detecting the tyre rotation in the horizontal, added with forming one first included by the first state data
Speed data；In step C, respectively the road surface characteristic data include an acceleration information；Second status data includes one in step D
Second acceleration information；The second acceleration information in step E according to second status data carries out computing, to judge the tire
State whether be abnormal.
3. the second acceleration number of degrees in tire monitor method as claimed in claim 2, wherein step D according to the second status data
According to carry out computing with to should tire a deflection angle, and when the deflection angle is more than a predetermined angular, judge the tire
State be abnormal.
4. the vibration frequency comprising the car body for detecting the vehicle in tire monitor method as claimed in claim 3, wherein step E
Rate, compared according to the vibration frequency with one with reference to vibration frequency, it is inclined at this to judge whether the vibration of the car body is normal vibration
Swinging is more than the predetermined angular and the car body when be normal vibration, judges the state of the tire for extremely.
5. the sensor is a gravity accelerometer in tire monitor method as claimed in claim 1, wherein step B,
Perpendicular to the acceleration of gravity in the direction on ground during detecting the tyre rotation, to be formed included by the first state data
One first acceleration information；In step C, respectively the road surface characteristic data include an acceleration information；Second status number in step D
According to including one second acceleration information；The second acceleration information in step E according to second status data is judged perpendicular to ground
The amplitude of the acceleration of gravity in the direction in face, and when amplitude is more than a predetermined amplitude scope, judge the state of the tire to be different
Often.
6. the vibration frequency comprising the car body for detecting the vehicle in tire monitor method as claimed in claim 5, wherein step E
Rate, compared according to the vibration frequency with one with reference to vibration frequency, to judge whether the vibration of the car body is normal vibration, vertical
When it is normal vibration that the amplitude of the acceleration of gravity in the direction on ground, which is more than the predetermined amplitude scope and the car body, the wheel is judged
The state of tire is abnormal.
7. the sensor is a gravity accelerometer in tire monitor method as claimed in claim 1, wherein step B,
To detect the acceleration of gravity during tyre rotation, accelerate the number of degrees to form one first included by the first state data
According to；In step C, respectively the road surface characteristic data include an acceleration information；Second status data adds including one second in step D
Speed data；The second acceleration information in step E according to second status data carries out computing, to judge the state of the tire
Whether it is abnormal.
8. the traveling side for the car body for judging the vehicle is included in tire monitor method as claimed in claim 7, wherein step E
To, and according to the direct of travel and second status data the second acceleration information carry out computing with to should tire toe-in
Angle, and when the toe-in angle of the tire exceeds outside a predetermined angular range, judge the state of the tire to be abnormal.
9. the second acceleration in tire monitor method as claimed in claim 7, wherein step E according to second status data
Data carry out computing with to should tire inclination angle, and the inclination angle of the tire exceed a predetermined angular range outside when, judge
The state of the tire is abnormal.
10. by two, the sensor detects the car respectively in tire monitor method as claimed in claim 1, wherein step B
State during left and right relative two tyre rotations, to form two first state data respectively, wherein the respectively sensing
Device is gravity accelerometer, and respectively the first state data include one first acceleration information, respectively first acceleration information
The corresponding respectively acceleration of gravity measured by the gravity accelerometer；In step C, respectively the road surface characteristic data include an acceleration
Degrees of data, and by two first state data one of with those road surface characteristic comparings；Foundation is taken in step D
The road surface characteristic data obtained carry out computings with two first state data respectively, to filter out institute in two first state data
Comprising road surface characteristic, respectively obtain two second status datas, respectively second status data include one second accelerate the number of degrees
According to；In step E according to two second status datas the second acceleration information to should two other inclination angles of tire, and
During the inclination angle asymmetry of two tires, judge the state of two tires to be abnormal.
11. the sensor is a sound pick-up in tire monitor method as claimed in claim 1, wherein step B, to detect this
Sound caused by tyre rotation, the first state data include one first voice data；In step C, each road surface characteristic number
According to including a voice data；Second status data includes a second sound data in step D；According to second shape in step E
The second sound data of state data and the reference voice comparing in the database, with judge the state of the tire whether be
It is abnormal.
12. the sensor is a shock sensor in tire monitor method as claimed in claim 1, wherein step B, to detect
Survey and shaken caused by the tyre rotation, the first state data include one first vibration data；In step C, respectively the road surface is special
Sign data include a vibration data；Second status data includes one second vibration data in step D；In step E according to this
Second vibration data of two-state data compares with one with reference to vibration data, to judge whether the state of the tire is abnormal.
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| CN201610329698.0A CN107399207A (en) | 2016-05-18 | 2016-05-18 | Tire monitor method |
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| CN111231588A (en) * | 2020-01-17 | 2020-06-05 | 新石器慧通（北京）科技有限公司 | Tire pressure monitoring method and device, vehicle-mounted equipment and storage medium |
| CN111532277A (en) * | 2020-06-01 | 2020-08-14 | 中国第一汽车股份有限公司 | Vehicle terrain recognition system and method and vehicle |
| WO2024074932A1 (en) * | 2022-10-05 | 2024-04-11 | 耀鑫有限公司 | Tire alignment angle measurement type rim cover device, and tire alignment angle measurement warning system and method |
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