CN110281712A - A kind of tire pressure data-updating method, device and medium - Google Patents
A kind of tire pressure data-updating method, device and medium Download PDFInfo
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- CN110281712A CN110281712A CN201910547391.1A CN201910547391A CN110281712A CN 110281712 A CN110281712 A CN 110281712A CN 201910547391 A CN201910547391 A CN 201910547391A CN 110281712 A CN110281712 A CN 110281712A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
- B60C23/0433—Radio signals
Abstract
This application discloses a kind of tire pressure data-updating method, device and media, which comprises obtains the tire pressure data of vehicle in real time；Cyclic redundancy check is carried out to the real-time tire pressure data；When being qualified there are the cyclic redundancy check result of two parts of real-time tire pressure data, processing is compared to described two parts real-time tire pressure data；When the comparison result of two parts of real time tire datas is without departing from predetermined deviation threshold value, real-time tire pressure data newest in two parts of real time tire datas are updated to display instrument；Implementing the application can be by the secondary verification strategy to receiving module increase data parlor, when making to occur under special disturbed condition sensor transmission abnormal data or receiving end error resolution, the case where updating the abnormal tire pressure data being disturbed to vehicular meter is avoided, avoids the occurrence of false alarm.
Description
Technical field
This application involves tire pressure monitoring system, a kind of tire pressure data-updating method, device and medium are more particularly related to.
Background technique
With automobile function arrangements lifting and the regulation GB26149-2017 " property of passenger vehicle tyre Measurement System of Air Pressure
Can require and test method " pressure carry out, TPMS (Tire Pressure Monitoring System, automotive tire pressure
Detection system) have become standard configuration.Tire pressure monitoring system is also gradually liked and is paid close attention to by user to user's bring sense of security.
But since tyre pressure sensor is installed at wheel rim valve port, and high speed rotary motion is carried out for a long time, so sensor is only
Can the receiving module by way of radiofrequency signal and in cabin carry out data transmission.This just brings a technical problem: how
Enhance the anti-interference of radiofrequency signal, guarantees stability and accuracy that tire pressure monitoring system data update.In real life,
The reason of causing tire pressure to be alarmed, may have tyre prick that tire pressure is caused to change, and tire pressure module is not reset after re-type, wheel
Not carrying out resetting or automobile after tire inflation prevents the time from causing tire pressure to be lower too long, tire pressure monitoring system false alarm in life
Situation is commonplace.Tire pressure monitoring system is usually to carry out a data check to collected tire pressure data, then will pass through number
It is reported according to the abnormal signal of verification.But due to vehicle mounted electrical apparatus, such as install additional vehicle-mounted humidifier, cyberdog, automobile data recorder or
If person's intercom etc. produces the radiofrequency signal of frequency range near 433.92MHz, it is possible to cause signal interference to TPMS, interfere
More complicated, the risk for abnormal data occur is higher.
Currently, the case where being often seen tire pressure false alarm in life, when such a situation occurs, will affect the feelings of driver
Thread generates insecurity factor.And existing tire pressure monitoring system is mostly from hardware point of view, tyre pressure sensor and receiving module
Anti-interference is fully considered from hardware selection and circuit design, and the radio frequency of its hardware is improved in conjunction with various electromagnetic compatibility tests
Signal anti-interference.
Summary of the invention
In order to overcome shortcoming and deficiency of the existing technology, the application discloses a kind of tire pressure data-updating method, device
And medium, implementing the application may be implemented in the case where distinctive signal interferes, and prevents sensor and sends abnormal data or receiving end mistake
After parsing the case where update abnormal signal, the occurrence of avoiding tire pressure false alarm, peace reliability is substantially increased.
In order to achieve the purpose that above-mentioned application, this application provides a kind of tire pressure data-updating method, device and medium, institutes
Stating tire pressure data-updating method includes:
The tire pressure data of vehicle are obtained in real time；
Cyclic redundancy check is carried out to the real-time tire pressure data；
When being qualified there are the cyclic redundancy check result of two parts of real-time tire pressure data, to described two parts real-time tire pressure numbers
It is handled according to being compared；
It, will be in two parts of real time tire datas when the comparison result of two parts of real time tire datas is without departing from predetermined deviation threshold value
Newest real-time tire pressure data are updated to display instrument.
Specifically, the method also includes:
When the comparison result of two parts of real time tire datas exceeds predetermined deviation threshold value, real-time monitoring simultaneously obtains new qualification
Tire pressure data；
Real-time tire pressure data before the new qualified tire pressure data and the new qualified tire pressure data are made
For described two parts real-time tire pressure data；
Repeat the step of processing is compared to described two parts real-time tire pressure data；
When current comparison result exceeds preset time threshold beyond the duration of predetermined deviation threshold value, tire pressure monitoring is sent
System failure alarm.
Processing is compared to described two parts real-time tire pressure data includes: specifically, described
Whether the pressure increase data for comparing continuous two parts real-time tire pressure data exceed predetermined deviation threshold value；
It compares the pressure in continuous two parts real-time tire pressure data and reduces whether data exceed predetermined deviation threshold value；
Whether the gradient of temperature data compared in continuous two parts real-time tire pressure data exceed predetermined deviation range.
Specifically, the real-time tire pressure data for obtaining vehicle include:
By sensor acquire vehicle real time tire data, the real time tire data include tire pressure data and
Temperature data；
The real time tire data of the vehicle is transferred to receiving module based on radio frequency；
Real time tire data based on the vehicle received calculates the tire pressure data after temperature-compensating.
Specifically, the method also includes:
Extraneous radio frequency interference signal filtration treatment is carried out to the real time tire data of the vehicle；
Correspondingly, the tire pressure data that the real time tire data based on the vehicle received calculates after temperature-compensating include
Tire pressure number after calculating temperature-compensating based on the real time tire data by extraneous radio frequency interference signal filtration treatment received
According to.
Specifically, it is described to described two parts real-time tire pressure data be compared processing include when being not zero to car speed
Processing is compared in two parts of real-time tire pressure data.
On the other hand the application also provides a kind of tire pressure data update apparatus, described device includes:
Data acquisition module, for obtaining the tire pressure data of vehicle in real time；
Data check module, for carrying out cyclic redundancy check to the real-time tire pressure data；
Data comparing module, for processing to be compared to described two parts real-time tire pressure data；
Data update module, for updating real-time tire pressure data newest in two parts of real time tire datas to display instrument
Table.
Specifically, the data acquisition module includes:
Data acquisition unit, for acquiring the real time tire data of vehicle, the real time tire data packet by sensor
Include the pressure data and temperature data of tire；
Data transmission unit, for the real time tire data of the vehicle to be transferred to receiving module based on radio frequency；
Data Computation Unit calculates the tire pressure number after temperature-compensating for the real time tire data based on the vehicle received
According to.
Specifically, the data comparing module includes:
Whether pressure increase comparing unit, the pressure increase data for comparing continuous two parts real-time tire pressure data surpass
Predetermined deviation threshold value out；
Pressure reduces comparing unit, for comparing whether the pressure in continuous two parts real-time tire pressure data reduces data
Beyond predetermined deviation threshold value；
Gradient of temperature comparing unit, for whether comparing the gradient of temperature data in continuous two parts real-time tire pressure data
Beyond predetermined deviation range.
On the other hand the application also provides a kind of tire pressure data more new medium, the medium includes processor and memory,
It is stored at least one instruction, at least a Duan Chengxu, code set or instruction set in the memory, at least one instruction,
An at least Duan Chengxu, the code set or instruction set are loaded by the processor and are executed to realize tire pressure data update side
Method.
Implement the application, has the following beneficial effects:
The application carries out cyclic redundancy check to the real-time tire pressure data by the tire pressure data of acquisition vehicle in real time,
When being qualified there are the cyclic redundancy check result of two parts of real-time tire pressure data, described two parts real-time tire pressure data are compared
It, will be in two parts of real time tire datas when the comparison result of two parts of real time tire datas is without departing from predetermined deviation threshold value to processing
Newest real-time tire pressure data are updated to display instrument, by increasing receiving module the secondary verification strategy of data parlor, are made
When occurring sensor transmission abnormal data or receiving end error resolution under special disturbed condition, the abnormal tire that will be disturbed is avoided
The case where pressing data to update to vehicular meter, avoids the occurrence of false alarm.
Detailed description of the invention
It, below will be to required in embodiment or description of the prior art in order to illustrate more clearly of the technical solution of the application
The attached drawing used is briefly described, it should be apparent that, the drawings in the following description are only some examples of the present application, right
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Its attached drawing.
Fig. 1 is structure when a kind of tire pressure monitoring system provided by the embodiments of the present application works in vehicle travel process
Figure.
Fig. 2 is the flow chart that a kind of tire pressure data provided by the embodiments of the present application update.
Fig. 3 is another flow chart that a kind of tire pressure data provided by the embodiments of the present application update.
Fig. 4 is a kind of tire pressure data update apparatus provided by the embodiments of the present application.
Fig. 5 is a kind of data acquisition module updated for tire pressure data provided by the embodiments of the present application.
Fig. 6 is a kind of data comparing module updated for tire pressure data provided by the embodiments of the present application.
Wherein, appended drawing reference is corresponding in Fig. 1 are as follows: 1- tire, 2- sensor, 3- receiving module, 4- display instrument.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation
Example is merely a part but not all of the embodiments of the present application.Based on the embodiment in the application, this field is common
The application protection all should belong in technical staff's every other embodiment obtained without creative efforts
Range.
It should be noted that the term " includes " of description and claims of this specification and " having " and they
Any deformation, it is intended that cover it is non-exclusive include, for example, containing the process, method of a series of steps or units, being
System, product or server those of are not necessarily limited to be clearly listed step or unit, but may include being not clearly listed
Or the other step or units intrinsic for these process, methods, product or equipment.
In order to realize the technical solution of the application, more engineering technology workers is allowed to be readily understood by and apply the application,
Will in conjunction with specific embodiments, the working principle of the application is further described.
This application can be applied to tire pressure monitoring systems to the more frontier of tire pressure data.
In this specification, TPMS (Tire Pressure Monitoring System, vehicle tire pressure detection system)
Be it is a kind of air pressure of automobile tire, temperature can be monitored automatically, and to the early warning system that abnormal tyre situation is alarmed.
It is two kinds that TPMS, which is divided to, is to judge whether tire is abnormal by the rotational speed difference of tire, separately one is indirect type tire pressure monitoring system
One is direct-type tire pressure monitoring system, by installing four tire pressure monitoring sensors additional inside tire, in vehicle stationary or
In driving process, real-time automatic monitoring is carried out to tire pressure and temperature, and to tire high pressure, low pressure, high temperature progress and Times
It is alert, it avoids causing traffic accident because of tire fault, it is ensured that traffic safety.Tire pressure data update in the application is based on direct-type
Tire pressure monitoring system, the tire pressure monitoring system mentioned in the application all refer to direct-type tire pressure monitoring system.Referring to Fig. 1, first
The schematic diagram that a kind of tire pressure data provided by the embodiments of the present application update application environment is introduced, what wherein Fig. 1 was presented is tire pressure prison
Structure chart when examining system works in vehicle travel process.When vehicle driving, sensor 2 acquire the pressure of tire 1, temperature,
The data such as pressure, temperature, revolving speed are simultaneously sent to receiving module 3 by the data such as revolving speed, and tire pressure data are updated to aobvious by receiving module 3
Show instrument 4.In further embodiments, display instrument 4 may be replaced by voice broadcasting system, when abnormal tyre pressure, to driving
The person of sailing issues phonic warning.
Below in conjunction with Fig. 2, a kind of embodiment of tire pressure data-updating method of the application is introduced first, wherein this method packet
It includes:
S11: the tire pressure data of vehicle are obtained in real time.
Obtaining the tire pressure data of vehicle in real time is realized by sensor, and there are two types of the sensors of tire pressure monitoring system
Working forms, one is built-in direct measurement formula, another kind is external direct measurement formula.Built-in direct measurement formula is by sensor
Inside tires are installed to, each individual sensor is powered by battery, and the tire pressure numerical value of measurement is connect by being wirelessly transmitted to
Receive module.External direct measurement formula is directly to be screwed to sensor above cranked tire valve, powers by battery and passes through wireless transmission
To receiving module.The tire pressure data for obtaining vehicle include the pressure data and temperature data of tire.The transmission packets
Radio signal transmission is included, after sensor collects the pressure data and temperature data of tire, by radiofrequency signal to receiving module
Tire pressure data are sent, the tire pressure data are the tire pressure data and temperature data after temperature-compensating, are carried out to tire pressure
Temperature-compensating can exclude influence of the temperature to tire pressure, and the pressure of two parts of real-time tire pressure data is enable to be based on same temperature
Degree is compared, more scientific.
Specifically, the pressure data and temperature data of sensor acquisition tire, are sent by radiofrequency signal to receiving module
In tire pressure data procedures, extraneous radio frequency signals filtration treatment can be carried out to collected data.Correspondingly, receiving module receives
Tire pressure data can be by extraneous radio frequency signals filtration treatment and tire pressure data and temperature after temperature-compensating
Data.Tyre pressure sensor radio frequency is only the radiofrequency signal of the fraction frequency range in radiofrequency signal, the frequency range of radiofrequency signal
For 300kHz to 300GHz, remaining radiofrequency signal except tyre pressure sensor radio frequency band is filtered out, extraneous radio frequency letter can be reduced
Number interference.But for certain specific extraneous radio frequency signals in tyre pressure sensor band limits, common radiofrequency signal
Filtering cannot filter specific extraneous radio frequency signals clean.
S13: cyclic redundancy check is carried out to real-time tire pressure data.
Be after being acquired due to real-time tire pressure data by wireless transmission, it cannot be guaranteed that in transmission process data front and back one
Cause property, can verify the tire pressure data received by way of cyclic redundancy check.Such as: sensor obtains real-time
Tire pressure data, this tire pressure data is k binary code sequences, in transmitting terminal according to the position the k to be transmitted binary code sequence,
The check code of a verification is generated with the rule of setting, this check code is r, and is attached to behind tire pressure data, constitutes one
New binary code sequence is total to the position (k+r), finally sends.In receiving end, according to what is followed between information code and check code
Rule tests to new binary code sequence, to determine in transmission process whether malfunction.Real-time tire pressure data are followed
The update of wrong tire pressure data can be greatly reduced in ring redundancy check.
S15: when being qualified there are the cyclic redundancy check result of two parts of real-time tire pressure data, to two parts of real-time tire pressure numbers
It is handled according to being compared.
After carrying out cyclic redundancy check to real-time tire pressure data, although drastically reducing tire wrong in transmission process
Press data, but by extraneous signal specific (as: vehicle-mounted humidifier, cyberdog, automobile data recorder or intercom generation
The radiofrequency signal of frequency range near 433.92Mhz) interfere the tire pressure data of the mistake generated that cannot be screened.At this time to by following
Processing is compared in the real-time tire pressure data of two parts of ring redundancy check.
Specifically, it may include: to compare continuous two parts of real-time tire pressure numbers that processing, which is compared, to two parts of real-time tire pressure data
Whether the pressure increase data in exceed predetermined deviation threshold value, and the pressure compared in continuous two parts of real-time tire pressure data reduces number
It is pre- according to whether the gradient of temperature data whether exceeded in predetermined deviation threshold value and the continuous two parts of real-time tire pressure data of comparison exceed
If deviation range.Here by the preset deviation for respectively corresponding pressure increase data, pressure reduction data and gradient of temperature data
Threshold value is separately set, and is due under normally travel state, and pressure increases considerably in a few seconds significantly to be gone up and down with temperature
The case where situation is not present, and pressure moment significantly reduces in the case where vehicle is blown out suddenly or tire is pricked really is deposited
?.To guarantee to occur blowing out or when tire is pricked, pressure moment is greatly reduced, and passes through the abnormal data quilt of cyclic redundancy check
Retain, the deviation threshold of pressure reduction can be arranged bigger than the deviation threshold of pressure increase and gradient of temperature, such as: setting
The pressure of two parts of real-time tire pressure data increases no more than 10kpa, rate of change is no more than 40kpa/ after temperature-compensating
Min, the pressure of two parts of real-time tire pressure data are reduced no more than 50kpa, rate of change is no more than after temperature-compensating
100kpa/min, the temperature change of two parts of real-time tire pressure data is no more than 10 DEG C.Two parts of real-time tires described in above-mentioned example
Pressure data are to pass through the real-time tire pressure data of cyclic redundancy check by continuous two parts, and the temperature-compensating can exclude temperature
The influence to tire pressure is spent, the pressure of two parts of real-time tire pressure data is enable to be compared based on same temperature, it is more scientific
Property.
Specifically, described two parts of real-time tire pressure data are compared two parts handled include when being not zero to car speed
Processing is compared in real-time tire pressure data.In some special circumstances such as user when being adjusted to tire pressure, pressure change
Range may exceed predetermined deviation threshold value, for such case is discharged, compare two parts of real-time tire pressure numbers when vehicle speed is not zero
According to not retaining real-time tire pressure data when speed is zero.
S17: when the comparison result of two parts of real time tire datas is without departing from predetermined deviation threshold value, by two parts of real time tire numbers
Newest real-time tire pressure data are updated to display instrument in.
The real-time tire pressure data compared by predetermined deviation threshold value are more scientific, eliminate extraneous signal specific (such as: vehicle
Carry the radiofrequency signal of frequency range near the 433.92Mhz of the generations such as humidifier, cyberdog, automobile data recorder or intercom) interference
The case where tire pressure data of the mistake of generation update to display instrument and issue tire pressure alarm, greatly improves security reliability.
Such as: as shown in table 1, by handling and two parts of real-time tire pressure data for passing through cyclic redundancy check are respectively first
Tire pressure data and the second tire pressure data compare the first tire pressure data and the second tire pressure data, the comparison result of two parts of tire pressure data
Without departing from predetermined deviation threshold value, the second tire pressure data are updated to display instrument.
Table 1
For another example being respectively the by two parts of real-time tire pressure data for handling and passing through cyclic redundancy check as shown in table 2
One tire pressure data and the second tire pressure data compare the first tire pressure data and the second tire pressure data, the comparison knot of two parts of tire pressure data
Fruit exceeds predetermined deviation threshold value, and instrument show value does not update.Real-time monitoring simultaneously obtains new qualified third tire pressure data, compares
The comparison result of second tire pressure data and third tire pressure data, two parts of tire pressure data exceeds predetermined deviation threshold value, instrument show value
It does not update.Real-time monitoring simultaneously obtains new the 4th qualified tire pressure data, compares third tire pressure data and the 4th tire pressure data, and two
The comparison result of part tire pressure data exceeds predetermined deviation threshold value without departing from predetermined deviation threshold value, and from occurring comparison result for the first time
To comparing the time of third tire pressure data and the 4th tire pressure data result without departing from predetermined deviation threshold value without departing from preset time threshold
Value, instrument show value update the 4th tire pressure data.
Table 2
In another embodiment, in conjunction with Fig. 3, a kind of tire pressure data-updating method of the application introduction can also include:
S21: the tire pressure data of vehicle are obtained in real time.
Obtaining the tire pressure data of vehicle in real time is realized by sensor, and there are two types of the sensors of tire pressure monitoring system
Working forms, one is built-in direct measurement formula, another kind is external direct measurement formula.Built-in direct measurement formula is by sensor
Inside tires are installed to, each individual sensor is powered by battery, and the tire pressure numerical value of measurement is connect by being wirelessly transmitted to
Receive module.External direct measurement formula is directly to be screwed to sensor above cranked tire valve, powers by battery and passes through wireless transmission
To receiving module.The tire pressure data for obtaining vehicle include the pressure data and temperature data of tire.The transmission packets
Radio signal transmission is included, after sensor collects the pressure data and temperature data of tire, by radiofrequency signal to receiving module
Tire pressure data are sent, the tire pressure data are the tire pressure data and temperature data after temperature-compensating, are carried out to tire pressure
Temperature-compensating can exclude influence of the temperature to tire pressure, and the pressure of two parts of real-time tire pressure data is enable to be based on same temperature
Degree is compared, more scientific.
Specifically, the pressure data and temperature data of sensor acquisition tire, are sent by radiofrequency signal to receiving module
In tire pressure data procedures, extraneous radio frequency signals filtration treatment can be carried out to collected data.Correspondingly, receiving module receives
Tire pressure data can be by extraneous radio frequency signals filtration treatment and tire pressure data and temperature after temperature-compensating
Data.Tyre pressure sensor radio frequency is only the radiofrequency signal of the fraction frequency range in radiofrequency signal, the frequency range of radiofrequency signal
For 300kHz to 300GHz, remaining radiofrequency signal except tyre pressure sensor radio frequency band is filtered out, extraneous radio frequency letter can be reduced
Number interference.But for certain specific extraneous radio frequency signals in tyre pressure sensor band limits, common radiofrequency signal
Filtering cannot filter specific extraneous radio frequency signals clean.
S23: cyclic redundancy check is carried out to real-time tire pressure data.
Be after being acquired due to real-time tire pressure data by wireless transmission, it cannot be guaranteed that in transmission process data front and back one
Cause property, can verify the tire pressure data received by way of cyclic redundancy check.Such as: sensor obtains real-time
Tire pressure data, this tire pressure data is k binary code sequences, in transmitting terminal according to the position the k to be transmitted binary code sequence,
The check code of a verification is generated with the rule of setting, this check code is r, and is attached to behind tire pressure data, constitutes one
New binary code sequence is total to the position (k+r), finally sends.In receiving end, according to what is followed between information code and check code
Rule tests to new binary code sequence, to determine in transmission process whether malfunction.Real-time tire pressure data are followed
The update of wrong tire pressure data can be greatly reduced in ring redundancy check.
S25: when being qualified there are the cyclic redundancy check result of two parts of real-time tire pressure data, to two parts of real-time tire pressure numbers
It is handled according to being compared.
After carrying out cyclic redundancy check to real-time tire pressure data, although drastically reducing tire wrong in transmission process
Press data, but by extraneous signal specific (as: vehicle-mounted humidifier, cyberdog, automobile data recorder or intercom generation
The radiofrequency signal of frequency range near 433.92Mhz) interfere the tire pressure data of the mistake generated that cannot be screened.At this time to by following
Processing is compared in the real-time tire pressure data of two parts of ring redundancy check.
Specifically, it may include: to compare continuous two parts of real-time tire pressure numbers that processing, which is compared, to two parts of real-time tire pressure data
Whether the pressure increase data in exceed predetermined deviation threshold value, and the pressure compared in continuous two parts of real-time tire pressure data reduces number
It is pre- according to whether the gradient of temperature data whether exceeded in predetermined deviation threshold value and the continuous two parts of real-time tire pressure data of comparison exceed
If deviation range.Here by the preset deviation for respectively corresponding pressure increase data, pressure reduction data and gradient of temperature data
Threshold value is separately set, and is due under normally travel state, and pressure increases considerably in a few seconds significantly to be gone up and down with temperature
The case where situation is not present, and pressure moment significantly reduces in the case where vehicle is blown out suddenly or tire is pricked really is deposited
?.To guarantee to occur blowing out or when tire is pricked, pressure moment is greatly reduced, and passes through the abnormal data quilt of cyclic redundancy check
Retain, the deviation threshold of pressure reduction can be arranged bigger than the deviation threshold of pressure increase and gradient of temperature, such as: setting
The pressure of two parts of real-time tire pressure data increases no more than 10kpa, rate of change is no more than 40kpa/ after temperature-compensating
Min, the pressure of two parts of real-time tire pressure data are reduced no more than 50kpa, rate of change is no more than after temperature-compensating
100kpa/min, the temperature change of two parts of real-time tire pressure data is no more than 10 DEG C.Two parts of real-time tires described in above-mentioned example
Pressure data are to pass through the real-time tire pressure data of cyclic redundancy check by continuous two parts, and the temperature-compensating can exclude temperature
The influence to tire pressure is spent, the pressure of two parts of real-time tire pressure data is enable to be compared based on same temperature, it is more scientific
Property.
Specifically, described two parts of real-time tire pressure data are compared two parts handled include when being not zero to car speed
Processing is compared in real-time tire pressure data.In some special circumstances such as user when being adjusted to tire pressure, pressure change
Range may exceed predetermined deviation threshold value, for such case is discharged, compare two parts of real-time tire pressure numbers when vehicle speed is not zero
According to not retaining real-time tire pressure data when speed is zero.
S27: when the comparison result of two parts of real time tire datas exceeds predetermined deviation threshold value, real-time monitoring is simultaneously obtained newly
Qualified tire pressure data.
The real-time tire pressure data compared by predetermined deviation threshold value are more scientific, eliminate extraneous signal specific (such as: vehicle
Carry the radiofrequency signal of frequency range near the 433.92Mhz of the generations such as humidifier, cyberdog, automobile data recorder or intercom) interference
The case where tire pressure data of the mistake of generation update to display instrument and issue tire pressure alarm, greatly improves security reliability.
Tire data beyond predetermined deviation threshold value is not meet common sense, does not retain the tire data beyond predetermined deviation threshold value, real
When monitor and obtain new qualified tire pressure data.
S29: the real-time tire pressure data before the new qualified tire pressure data and new qualified tire pressure data are made
For described two parts real-time tire pressure data.
In step S27, two parts of real time tire datas have the sequencing on acquisition time, new qualified tire pressure data it
Preceding real-time tire pressure data refer to, that part of real time tire data of acquisition time rearward.
S31: the step of processing is compared to described two parts real-time tire pressure data is repeated.
S33: when current comparison result exceeds preset time threshold beyond the duration of predetermined deviation threshold value, tire pressure is sent
Faults of monitoring system alarm.
Such as: as shown in table 3, by handling and two parts of real-time tire pressure data for passing through cyclic redundancy check are respectively first
Tire pressure data and the second tire pressure data compare the first tire pressure data and the second tire pressure data, the comparison result of two parts of tire pressure data
Beyond predetermined deviation threshold value, instrument show value does not update.Real-time monitoring simultaneously obtains new qualified third tire pressure data, compares the
The comparison result of two tire pressure data and third tire pressure data, two parts of tire pressure data exceeds predetermined deviation threshold value, and instrument show value is not
It updates.Real-time monitoring simultaneously obtains new the 4th qualified tire pressure data, compares third tire pressure data and the 4th tire pressure data, and two parts
The comparison result of tire pressure data exceeds predetermined deviation threshold value, and instrument show value does not update.Continue to monitor and obtain new qualification
Tire pressure data, when reaching preset time threshold, the comparison knot of newest two parts qualified tire pressure data N-1 and tire pressure data N
Fruit still exceeds predetermined deviation threshold value, sends tire pressure and compares abnormality alarming.
Table 3
On the other hand the embodiment of the present application also provides a kind of tire pressure data update apparatus, as shown in figure 4, described device packet
It includes:
Data acquisition module 5, for obtaining the tire pressure data of vehicle in real time；
Data check module 6, for carrying out cyclic redundancy check to the real-time tire pressure data；
Data comparing module 7, for processing to be compared to described two parts real-time tire pressure data；
Data update module 8, for updating real-time tire pressure data newest in two parts of real time tire datas to display instrument
Table.
Specifically, as shown in figure 5, data acquisition module 5 includes:
Data acquisition unit 9, for acquiring the real time tire data of vehicle, the real time tire data packet by sensor
Include the pressure data and temperature data of tire；
Data transmission unit 10, for the real time tire data of the vehicle to be transferred to receiving module based on radio frequency；
Data Computation Unit 11 calculates the tire pressure after temperature-compensating for the real time tire data based on the vehicle received
Data.
Specifically, as shown in fig. 6, data comparing module 7 includes:
Pressure increase comparing unit 12, for compare continuous two parts real-time tire pressure data pressure increase data whether
Beyond predetermined deviation threshold value；
Pressure reduces comparing unit 13, is for comparing the reduction of the pressure in continuous two parts real-time tire pressure data data
It is no to exceed predetermined deviation threshold value；
Gradient of temperature comparing unit 14 is for comparing the gradient of temperature data in continuous two parts real-time tire pressure data
It is no to exceed predetermined deviation range.
On the other hand the application also provides a kind of tire pressure data more new medium, the medium includes processor and memory,
It is stored at least one instruction, at least a Duan Chengxu, code set or instruction set in the memory, at least one instruction,
An at least Duan Chengxu, the code set or instruction set are loaded by the processor and are executed to realize tire pressure data update side
Method.
The technical side provided by a kind of tire pressure data-updating method of above the application, device, terminal and server example
Case as it can be seen that the application by obtaining the tire pressure data of vehicle in real time, carries out cyclic redundancy check to the real-time tire pressure data, when
When there are the cyclic redundancy check result of two parts of real-time tire pressure data being qualified, described two parts real-time tire pressure data are compared
Processing, when the comparison result of two parts of real time tire datas is without departing from predetermined deviation threshold value, by two parts of real time tire datas most
New real-time tire pressure data are updated to display instrument, by increasing receiving module the secondary verification strategy of data parlor, make spy
The case where sensor that may occur under different disturbed condition sends abnormal data or receiving end error resolution greatly reduces, prevent by
The case where abnormal tire pressure data that are disturbed are updated to vehicular meter, avoids the occurrence of false alarm.
Above description sufficiently discloses the specific embodiment of the application.It should be pointed out that being familiar with the field
Range of any change that technical staff does the specific embodiment of the application all without departing from following claims.
Correspondingly, the range of claims hereof is also not limited only to previous embodiment.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for device,
For terminal and server embodiment, since it is substantially similar to the method embodiment, so being described relatively simple, related place
Illustrate referring to the part of embodiment of the method.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of tire pressure data-updating method, which is characterized in that the described method includes:
The tire pressure data of vehicle are obtained in real time；
Cyclic redundancy check is carried out to the real-time tire pressure data；
When being qualified there are the cyclic redundancy check result of two parts of real-time tire pressure data, to described two parts real-time tire pressure data into
Row comparison processing；
It, will be newest in two parts of real time tire datas when the comparison result of two parts of real time tire datas is without departing from predetermined deviation threshold value
Real-time tire pressure data update to display instrument.
2. tire pressure data-updating method according to claim 1, which is characterized in that the method also includes:
When the comparison result of two parts of real time tire datas exceeds predetermined deviation threshold value, real-time monitoring simultaneously obtains new qualified tire
Press data；
Using the real-time tire pressure data before the new qualified tire pressure data and the new qualified tire pressure data as institute
State two parts of real-time tire pressure data；
Repeat the step of processing is compared to described two parts real-time tire pressure data；
When current comparison result exceeds preset time threshold beyond the duration of predetermined deviation threshold value, tire pressure monitoring system is sent
Fault warning.
3. tire pressure data-updating method according to claim 1, which is characterized in that described to described two parts real-time tire pressure numbers
Include: according to processing is compared
Whether the pressure increase data compared in continuous two parts real-time tire pressure data exceed predetermined deviation threshold value；
It compares the pressure in continuous two parts real-time tire pressure data and reduces whether data exceed predetermined deviation threshold value；
Whether the gradient of temperature data compared in continuous two parts real-time tire pressure data exceed predetermined deviation range.
4. tire pressure data-updating method according to claim 1, which is characterized in that the real-time tire pressure number for obtaining vehicle
According to including:
The real time tire data of vehicle is acquired by sensor, the real time tire data includes the pressure data and temperature of tire
Data；
The real time tire data of the vehicle is transferred to receiving module based on radio frequency；
Real time tire data based on the vehicle received calculates the tire pressure data after temperature-compensating.
5. tire pressure data-updating method according to claim 4, which is characterized in that the method also includes:
Extraneous radio frequency interference signal filtration treatment is carried out to the real time tire data of the vehicle；
Correspondingly, it includes being based on that the real time tire data based on the vehicle received, which calculates the tire pressure data after temperature-compensating,
Tire pressure data after the real time tire data calculating temperature-compensating by extraneous radio frequency interference signal filtration treatment received.
6. tire pressure data-updating method according to claim 1, which is characterized in that described to described two parts real-time tire pressure numbers
It include that processing is compared in two parts of real-time tire pressure data when being not zero to car speed according to processing is compared.
7. a kind of tire pressure data update apparatus, which is characterized in that described device includes:
Data acquisition module, for obtaining the tire pressure data of vehicle in real time；
Data check module, for carrying out cyclic redundancy check to the real-time tire pressure data；
Data comparing module, for processing to be compared to described two parts real-time tire pressure data；
Data update module, for updating real-time tire pressure data newest in two parts of real time tire datas to display instrument.
8. tire pressure data update apparatus according to claim 7, which is characterized in that the data acquisition module includes:
Data acquisition unit, for acquiring the real time tire data of vehicle by sensor, the real time tire data includes wheel
The pressure data and temperature data of tire；
Data transmission unit, for the real time tire data of the vehicle to be transferred to receiving module based on radio frequency；
Data Computation Unit calculates the tire pressure data after temperature-compensating for the real time tire data based on the vehicle received.
9. tire pressure data update apparatus according to claim 7, which is characterized in that the data comparing module includes:
Pressure increase comparing unit, for comparing whether the pressure increase data in continuous two parts real-time tire pressure data exceed
Predetermined deviation threshold value；
Pressure reduces comparing unit, reduces whether data exceed for comparing the pressure in continuous two parts real-time tire pressure data
Predetermined deviation threshold value；
Gradient of temperature comparing unit, for comparing whether the gradient of temperature data in continuous two parts real-time tire pressure data exceed
Predetermined deviation range.
10. a kind of tire pressure data more new medium, which is characterized in that the medium includes processor and memory, the memory
In be stored at least one instruction, at least a Duan Chengxu, code set or instruction set, at least one instruction, described at least one
Duan Chengxu, the code set or instruction set are loaded by the processor and are executed to realize as described in claim 1-6 is any
Tire pressure data-updating method.
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| CN201910547391.1A CN110281712A (en) | 2019-06-24 | 2019-06-24 | A kind of tire pressure data-updating method, device and medium |
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Application publication date: 20190927 |