CN109460910A - A kind of new-energy automobile health monitoring appraisal procedure and system - Google Patents
A kind of new-energy automobile health monitoring appraisal procedure and system Download PDFInfo
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- G—PHYSICS
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a kind of new-energy automobile health monitoring appraisal procedures, systematically analyze and monitor the health condition of vehicle from the safety of new-energy automobile, reliability and economy respectively.The invention also discloses the systems of the application monitoring appraisal procedure, including car-mounted terminal, and OBD AM access module, battery management module, locating module and the first wireless transport module of connection car-mounted terminal simultaneously；Cloud server, and charging site server, maintenance site server, user terminal and the second wireless transport module of connection cloud server；First wireless transport module connects the second wireless transport module.The invention has the advantages that establishing vehicle health model according to the new energy vehicle internal data collection that long-time is collected；While helping enterprise to real time data inspecting, vehicle trouble prevention mechanism is established；By the operation arrangement of vehicle health state and vehicle, Dynamic Programming vehicle maintenance place and time；Spare part is carried out to failure part in advance simultaneously.
Description
Technical field
The present invention relates to automobile health evaluation system and method, specially a kind of new-energy automobile health monitoring appraisal procedure
And system.
Background technique
As new-energy automobile is increasingly being applied to public transport, traffic operation enterprise or new-energy automobile user
To how efficiently being effectively monitored to new-energy automobile and evaluation requirement is more and more.New-energy automobile is compared to biography
System automobile, the energy are all provided by battery, assessment mode different from.In general, health evaluating refers to by constructing health degree
Index evaluates automobile current health state, i.e. automobile is able to maintain certain reliability and continues to complete the task of delivery, is simultaneously
The maintenance of automobile provides decision-making foundation, and the generation of failure is reduced or avoided, improves safety, reliability and the economy of equipment
Property.Currently, there are two main classes for the mode of assessment: first is that based on each component failure analysis assessment of automobile, second is that each based on automobile
System performance degradation data assessment.But the assessment of current new-energy automobile requires real-time, and traditional appraisal procedure needs to carry out
A large amount of experimental data is collected, and cannot achieve real-time assessment.Traffic operation enterprise is required to from past data, obtains vehicle
Normal operation rules, obtained from real-time running data again current vehicle health value assessment.
Summary of the invention
To solve the above-mentioned problems, the invention proposes a kind of new-energy automobile health monitoring appraisal procedure and systems.
To achieve the goals above, the present invention adopts the following technical scheme: a kind of new-energy automobile health monitoring assessment side
Method, comprising:
S1, the weight for collecting mileage number, charging times and passenger and cargo that vehicle travels in for a period of time, calculate
The economic sex index of vehicle；
S2, vehicle internal fault occurrence type and repairing time for a period of time are collected, calculates the reliability index of vehicle；
S3, vehicle interior vehicle status parameters for a period of time are collected, assesses the safety parameters of vehicle.
Further, the concrete mode of the S1 of the appraisal procedure:
S11, the time span Δ S for counting long period of time interior certain driving of certain vehiclei(i=1,2 ..., n), disappears
The electricity Δ C of consumptioni(i=1,2 ..., n) and load-carrying Δ Wi(i=1,2 ..., n) obtains the vehicle and is averaged economic index:
S12, the average economic index for calculating all vehiclesWherein j is the number of vehicle, is obtained
The average economic index of all vehicles out:
S13, the economic index coefficient for calculating each car:
If S14, a > b, check vehicle, analyse whether normal；If normal, using a as the mark of the vehicle
Quasi- economic index coefficient；If hereafter economic index coefficient is greater than b times of criteria economy index coefficient, vehicle is carried out
It checks；With the operation aging of vehicle, the numerical value of b increases.
Further, the S2 concrete mode of the appraisal procedure is:
S21, failure modes table is established, assesses the menace level of all kinds of failures, according to menace level by all vehicle troubles
Number is converted to equivalent number of faults Ej；
The time span Δ T that S22, calculating vehicle are driven a vehicle every timeiThe time of (i=1,2 ..., n), each failure delay are long
Spend Δ Fj(j=1,2 ..., m), obtains:
S23, it is directed to the case where L is more than setting value, most common failure source is carried out to vehicle and is giveed a thorough inspection；Setting value with
Vehicle ages, numerical value increase.
Further, the S3 concrete mode of the appraisal procedure is:
Under S31, measurement different interval moving displacement, current of electric A (t) and motor torque T (t) are poor by once linear
Value obtains the relationship of electric car displacement S (t) and current of electric A (t): S [A (t)=X].Electric car has four wheels i.e. four altogether
Motor indicates the different motor current signal of electric car with every a line, constitutes data matrix:
S32, preprocessed data combine to obtain m row such as S in a manner of column vectorj={ s1j … s2j … skjSet,
Indicate that data of the current of electric at displacement j are total, SjFor n sample point for being distributed P, probability density function be may be expressed as:
P in formulahIt (x) is Multilayer networks function；K () is kernel function, usually meets symmetry and ∫ K () dx
=1；H is smoothing factor；
S33, the corresponding probability density function of distribution P is set as ph(x), then comentropy are as follows:
H (P)=- ∫ ph(x)lnph(x)dx
KL distance defines the distance for measuring the otherness of two probability distribution P and Q are as follows:
Definition:And in order to realize symmetry, by phase again after the unknown exchange of P, Q
Add:
E (P, Q)=I (P, Q)+I (Q, P)
Then the formula of JS divergence is obtained are as follows:
The expression formula of electric car safety indexes HI under S stroke can be established according to formula (5) are as follows:
B is that form parameter perseverance is greater than 0 in formula.
Further, a kind of new-energy automobile health monitoring assessment system using above-mentioned appraisal procedure, comprising:
Car-mounted terminal, and the connection OBD AM access module of car-mounted terminal, battery management module, locating module and first are wireless
Transmission module；
Cloud server, and charging site server, the maintenance site server, user terminal and second of connection cloud server
Wireless transport module；First wireless transport module connects the second wireless transport module.
Further, the car-mounted terminal is also connected with alarm module, for issuing sound and light alarm signal.
Further, first wireless transport module and the second wireless transport module use 3G or 4G transport protocol.
Further, maintenance site server connection carshop agrees purchasing system, and maintenance site server inquires itself library
Accessory is deposited, manufacturer's accessory is ordered in request automatically if accessory deficiency.
Further, the car-mounted terminal is also connected with high capability flash, and off-line data automatically saves when suspension occurs；
After restoring network, off-line data is uploaded to cloud server automatically.
Compared with prior art, the beneficial effects of the present invention are:
1. establishing vehicle health model according to the new energy vehicle internal data collection that long-time is collected；Helping enterprise pair
While real time data inspecting, vehicle trouble prevention mechanism is established；
2. passing through the operation arrangement of vehicle health state and vehicle, Dynamic Programming vehicle maintenance place and time；It mentions simultaneously
It is preceding that spare part is carried out to failure part.
Detailed description of the invention
Fig. 1 is system block diagram of the invention.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, this hair of Detailed description of the invention is now compareed
Bright specific embodiment, but protection scope of the present invention be not limited to it is as described below.
The present invention provides a kind of new-energy automobile health monitoring appraisal procedures, comprising:
S1, the weight for collecting mileage number, charging times and passenger and cargo that vehicle travels in for a period of time, calculate
The economic sex index of vehicle；
S2, vehicle internal fault occurrence type and repairing time for a period of time are collected, calculates the reliability index of vehicle；
S3, vehicle interior vehicle status parameters for a period of time are collected, assesses the safety parameters of vehicle.
Preferably, the concrete mode of the S1 of the appraisal procedure:
S11, the time span Δ S for counting long period of time interior certain driving of certain vehiclei(i=1,2 ..., n), disappears
The electricity Δ C of consumptioni(i=1,2 ..., n) and load-carrying Δ Wi(i=1,2 ..., n) obtains the vehicle and is averaged economic index:
S12, the average economic index for calculating all vehiclesWherein j is the number of vehicle, is obtained
The average economic index of all vehicles out:
S13, the economic index coefficient for calculating each car:
If S14, a > b, check vehicle, analyse whether normal；If normal, using a as the mark of the vehicle
Quasi- economic index coefficient；If hereafter economic index coefficient is greater than b times of criteria economy index coefficient, vehicle is carried out
It checks；With the operation aging of vehicle, the numerical value of b increases.
It should be pointed out that the load-carrying of vehicle includes complete vehicle weight and people, goods weight；According to vehicular applications, lorry is neglected
Slightly the weight of people, the weight of cargo need weighing of weighing；Car peak period is calculated as fully loaded, average everyone weight 50KG folding
It calculates；Passenger flow low peak period is calculated by semi-load, average everyone weight 50KG conversion.For vehicle in 1 to 3 year, b is set as 1.2, annual to increase
Add 0.1.
Preferably, the S2 concrete mode of the appraisal procedure is:
S21, failure modes table is established, assesses the menace level of all kinds of failures, according to menace level by all vehicle troubles
Number is converted to equivalent number of faults Ej；
The time span Δ T that S22, calculating vehicle are driven a vehicle every timeiThe time of (i=1,2 ..., n), each failure delay are long
Spend Δ Fj(j=1,2 ..., m), obtains:
S23, it is directed to the case where L is more than setting value, most common failure source is carried out to vehicle and is giveed a thorough inspection；Setting value with
Vehicle ages, numerical value increase.
For new car in 1 to 3 year, the value of L is maintained at 0.97, behind it is every increase by 1 year, then L value reduce by 0.15.
Preferably, the S3 concrete mode of the appraisal procedure is:
Under S31, measurement different interval moving displacement, current of electric A (t) and motor torque T (t) are poor by once linear
Value obtains the relationship of electric car displacement S (t) and current of electric A (t): S [A (t)=X].Electric car has four wheels i.e. four altogether
Motor indicates the different motor current signal of electric car with every a line, constitutes data matrix:
S32, preprocessed data combine to obtain m row such as S in a manner of column vectorj={ s1j … s2j … skjSet,
Indicate that data of the current of electric at displacement j are total, SjFor n sample point for being distributed P, probability density function be may be expressed as:
P in formulahIt (x) is Multilayer networks function；K () is kernel function, usually meets symmetry and ∫ K () dx
=1；H is smoothing factor；
S33, the corresponding probability density function of distribution P is set as ph(x), then comentropy are as follows:
H (P)=- ∫ ph(x)lnph(x)dx
KL distance defines the distance for measuring the otherness of two probability distribution P and Q are as follows:
Definition:And in order to realize symmetry, by phase again after the unknown exchange of P, Q
Add:
E (P, Q)=I (P, Q)+I (Q, P)
Then the formula of JS divergence is obtained are as follows:
The expression formula of electric car safety indexes HI under S stroke can be established according to formula (5) are as follows:
B is that form parameter perseverance is greater than 0 in formula.
As shown in Figure 1, a kind of new-energy automobile health monitoring assessment system applied to above-mentioned appraisal procedure, packet
It includes:
Car-mounted terminal, and the connection OBD AM access module of car-mounted terminal, battery management module, locating module and first are wireless
Transmission module；
Cloud server, and charging site server, the maintenance site server, user terminal and second of connection cloud server
Wireless transport module；First wireless transport module connects the second wireless transport module.
Preferably, the car-mounted terminal is also connected with alarm module, for issuing sound and light alarm signal.
Preferably, first wireless transport module and the second wireless transport module use 3G or 4G transport protocol.
Preferably, maintenance site server connection carshop agrees purchasing system, and maintenance site server inquires itself inventory
Accessory, manufacturer's accessory is ordered in request automatically if accessory deficiency.
Preferably, the car-mounted terminal is also connected with high capability flash, and off-line data automatically saves when suspension occurs；It is extensive
After multiple network, off-line data is uploaded to cloud server automatically.
It can be concluded that the beneficial effect that the present invention may be implemented is, in the new energy vehicle collected according to long-time
Portion's data set, establishes vehicle health model；While helping enterprise to real time data inspecting, vehicle trouble prevention machine is established
System；By the operation arrangement of vehicle health state and vehicle, Dynamic Programming vehicle maintenance place and time；Simultaneously in advance to failure
Part carries out spare part.
The above is only a preferred embodiment of the present invention, it should be understood that the present invention is not limited to described herein
Form should not be regarded as an exclusion of other examples, and can be used for other combinations, modifications, and environments, and can be at this
In the text contemplated scope, modifications can be made through the above teachings or related fields of technology or knowledge.And those skilled in the art institute into
Capable modifications and changes do not depart from the spirit and scope of the present invention, then all should be in the protection scope of appended claims of the present invention
It is interior.
Claims (9)
1. a kind of new-energy automobile health monitoring appraisal procedure characterized by comprising
S1, the weight for collecting mileage number, charging times and passenger and cargo that vehicle travels in for a period of time, calculate vehicle
Economic sex index；
S2, vehicle internal fault occurrence type and repairing time for a period of time are collected, calculates the reliability index of vehicle；
S3, vehicle interior vehicle status parameters for a period of time are collected, assesses the safety parameters of vehicle.
2. a kind of new-energy automobile health monitoring appraisal procedure as described in claim 1, it is characterised in that: the appraisal procedure
S1 concrete mode:
S11, the time span Δ S for counting long period of time interior certain driving of certain vehiclei(i=1,2 ..., n), the electricity of consumption
Measure Δ Ci(i=1,2 ..., n) and load-carrying Δ Wi(i=1,2 ..., n) obtains the vehicle and is averaged economic index:
S12, the average economic index for calculating all vehiclesWherein j is the number of vehicle, obtains institute
There is the average economic index of vehicle:
S13, the economic index coefficient for calculating each car:
If S14, a > b, check vehicle, analyse whether normal；If normal, passed through using a as the standard of the vehicle
Ji property index coefficient；If hereafter economic index coefficient is greater than b times of criteria economy index coefficient, vehicle is examined
It looks into；With the operation aging of vehicle, the numerical value of b increases.
3. a kind of new-energy automobile health monitoring appraisal procedure as described in claim 1, it is characterised in that: the appraisal procedure
S2 concrete mode be:
S21, failure modes table is established, assesses the menace level of all kinds of failures, roll over all vehicle trouble numbers according to menace level
It is counted as equivalent number of faults Ej；
The time span Δ T that S22, calculating vehicle are driven a vehicle every timei(i=1,2 ..., n), the time span Δ F of each failure delayj
(j=1,2 ..., m), obtains:
S23, it is directed to the case where L is more than setting value, most common failure source is carried out to vehicle and is giveed a thorough inspection；Setting value is with vehicle
Aging, numerical value increase.
4. a kind of new-energy automobile health monitoring appraisal procedure as described in claim 1, it is characterised in that: the appraisal procedure
S3 concrete mode be:
Under S31, measurement different interval moving displacement, current of electric A (t) and motor torque T (t) are obtained by once linear difference
Obtain the relationship of electric car displacement S (t) and current of electric A (t): S [A (t)=X].Electric car has four wheels i.e. four motors altogether,
The different motor current signal of electric car is indicated with every a line, constitutes data matrix:
S32, preprocessed data combine to obtain m row such as S in a manner of column vectorj={ s1j … s2j … skjSet, indicate
Data of the current of electric at displacement j are total, SjFor n sample point for being distributed P, probability density function be may be expressed as:
P in formulahIt (x) is Multilayer networks function；K () is kernel function, usually meets symmetry and ∫ K () dx=1；
H is smoothing factor；
S33, the corresponding probability density function of distribution P is set as ph(x), then comentropy are as follows:
H (P)=- ∫ ph(x)lnph(x)dx
KL distance defines the distance for measuring the otherness of two probability distribution P and Q are as follows:
Definition:And in order to realize symmetry, will be added again after the unknown exchange of P, Q:
E (P, Q)=I (P, Q)+I (Q, P)
Then the formula of JS divergence is obtained are as follows:
The expression formula of electric car safety indexes HI under S stroke can be established according to formula (5) are as follows:
B is that form parameter perseverance is greater than 0 in formula.
5. a kind of new-energy automobile health monitoring appraisal procedure is applied to a kind of new energy as described in one of Claims 1-4
Source automobile health monitoring appraisal procedure characterized by comprising
Car-mounted terminal, and OBD AM access module, battery management module, locating module and the first wireless transmission of connection car-mounted terminal
Module；
Cloud server, and connect the charging site server of cloud server, maintenance site server, user terminal and second wirelessly
Transmission module；First wireless transport module connects the second wireless transport module.
6. a kind of new-energy automobile health monitoring appraisal procedure as claimed in claim 5, it is characterised in that: the car-mounted terminal
It is also connected with alarm module, for issuing sound and light alarm signal.
7. a kind of new-energy automobile health monitoring appraisal procedure as claimed in claim 5, it is characterised in that: described first is wireless
Transmission module and the second wireless transport module use 3G or 4G transport protocol.
8. a kind of new-energy automobile health monitoring appraisal procedure as claimed in claim 5, it is characterised in that: the maintenance station clothes
Business device connection carshop agrees purchasing system, and maintenance site server inquires itself inventory's accessory, and request is ordered automatically if accessory deficiency
Purchase manufacturer's accessory.
9. a kind of new-energy automobile health monitoring appraisal procedure as claimed in claim 5, it is characterised in that: the car-mounted terminal
It is also connected with high capability flash, off-line data automatically saves when suspension occurs；After restoring network, off-line data is uploaded to automatically
Cloud server.
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| WO2022134988A1 (en) * | 2020-12-26 | 2022-06-30 | 华为技术有限公司 | Battery fault detection method, system and apparatus, and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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