CN112432786A - Fault diagnosis method and device for hydraulic automatic transmission - Google Patents
Fault diagnosis method and device for hydraulic automatic transmission Download PDFInfo
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Abstract
The invention relates to the technical field of transmission fault diagnosis, in particular to a method and a device for diagnosing a fault of a hydraulic automatic transmission. The method comprises the following steps: receiving transmission fault information; determining the preset fault type according to a preset fault type sequence corresponding to the fault information of the transmission; generating and sending a fault diagnosis troubleshooting strategy corresponding to the preset fault type; receiving return information of a fault diagnosis troubleshooting strategy; judging whether the returned information meets the condition criteria of the fault situation corresponding to the fault diagnosis and troubleshooting strategy; if not, re-determining the fault type; and if so, taking the fault situation corresponding to the fault diagnosis troubleshooting strategy as a fault diagnosis result of the transmission. According to the method, the fault information of the hydraulic automatic transmission is received, and a fault diagnosis and troubleshooting strategy is generated and sent according to the corresponding preset fault type sequence, so that the fault troubleshooting is efficiently carried out, the fault diagnosis result of the hydraulic automatic transmission is rapidly obtained, and the fault diagnosis of the hydraulic automatic transmission is efficiently realized.
Description
Technical Field
The invention relates to the technical field of transmission fault diagnosis, in particular to a method and a device for diagnosing a fault of a hydraulic automatic transmission.
Background
The hydraulic automatic transmission can improve the convenience of the operation of a vehicle chassis and improve the comfort of a driver in driving the vehicle. However, with the increase of the degree of intellectualization of the components of the automatic hydraulic transmission, when the automatic hydraulic transmission fails, it becomes more and more difficult to perform troubleshooting and diagnosis only by using a fault code returned by the automatic hydraulic transmission.
Therefore, how to efficiently diagnose the fault of the hydraulic automatic transmission is a technical problem which needs to be solved at present.
Disclosure of Invention
The invention aims to provide a method and a device for diagnosing the fault of a hydraulic automatic transmission, so as to efficiently realize the fault diagnosis of the hydraulic automatic transmission.
The embodiment of the invention provides the following scheme:
in a first aspect, an embodiment of the present invention provides a method for diagnosing a fault of an automatic hydraulic transmission, where the method includes:
step 11, receiving transmission fault information;
step 12, determining the current preset fault type according to a preset fault type sequence corresponding to the transmission fault information;
step 13, generating and sending a fault diagnosis and troubleshooting strategy corresponding to the preset fault type;
step 14, receiving the return information of the fault diagnosis and troubleshooting strategy;
step 15, judging whether the returned information meets the condition criterion of the fault situation corresponding to the fault diagnosis and troubleshooting strategy;
step 16, if not, returning to the step 12, and re-determining the current fault type;
and step 17, if the fault condition is met, taking the fault situation corresponding to the fault diagnosis troubleshooting strategy as a fault diagnosis result of the transmission.
In a possible embodiment, before the step 11, the method further comprises:
performing linear combination on preset fault types in a preset fault type set, and determining a preset fault type sequence corresponding to the transmission fault information; the preset fault type set comprises one or more of an electrical equipment fault type, an electric control equipment fault type, a hydraulic assembly fault type and a mechanical structure fault type.
In a possible embodiment, the linearly combining preset fault types in a preset fault type set to determine a preset fault type sequence corresponding to the transmission fault information includes:
determining the statistical times of the historical fault types corresponding to the transmission fault information according to the historical fault record data of the transmission fault information;
sorting the historical fault types from large to small according to the statistical times to obtain a historical fault type sequence;
and acquiring a preset fault type sequence corresponding to the transmission fault information according to the historical fault type sequence.
In a possible embodiment, in the historical fault type sequence, the linearly combining preset fault types in a preset fault type set to determine a preset fault type sequence corresponding to the transmission fault information includes:
performing linear combination on preset fault types in the preset fault type set according to a set rule, and determining a preset fault type sequence corresponding to the transmission fault information;
wherein the setting rule comprises: the sequencing position of the electrical equipment fault type is earlier than the sequencing position of the electrical control equipment fault type, the sequencing position of the electrical control equipment fault type is earlier than the sequencing position of the hydraulic assembly fault type, and the sequencing position of the hydraulic assembly fault type is earlier than the sequencing position of the mechanical structure fault type.
In a possible embodiment, after the step 17, the method further comprises:
and generating and sending a transmission fault maintenance strategy according to the transmission fault diagnosis result.
In a second aspect, an embodiment of the present invention provides a hydraulic automatic transmission fault diagnosis apparatus, including:
the first receiving module is used for receiving transmission fault information;
the first determining module is used for determining the preset fault type according to the preset fault type sequence corresponding to the transmission fault information;
the first sending module is used for generating and sending the fault diagnosis and troubleshooting strategy corresponding to the preset fault type;
the second receiving module is used for receiving the return information of the fault diagnosis and troubleshooting strategy;
the first judgment module is used for judging whether the returned information meets the condition criteria of the fault situation corresponding to the fault diagnosis and troubleshooting strategy;
the first updating module is used for returning to the first determining module and re-determining the fault type when the returned information does not conform to the condition criterion of the fault situation corresponding to the fault diagnosis and troubleshooting strategy;
and the diagnosis result acquisition module is used for taking the fault situation corresponding to the fault diagnosis troubleshooting strategy as a transmission fault diagnosis result when the returned information accords with the condition criterion of the fault situation corresponding to the fault diagnosis troubleshooting strategy.
In a possible embodiment, the apparatus further comprises:
the second determining module is used for performing linear combination on preset fault types in a preset fault type set before the first receiving module works, and determining a preset fault type sequence corresponding to the transmission fault information; the preset fault type set comprises one or more of an electrical equipment fault type, an electric control equipment fault type, a hydraulic assembly fault type and a mechanical structure fault type.
In one possible embodiment, the second determining module includes:
the third determining module is used for determining the statistical times of the historical fault types corresponding to the transmission fault information according to the historical fault record data of the transmission fault information;
the historical fault type sequence acquisition module is used for sequencing the historical fault types from large to small according to the statistical times to obtain a historical fault type sequence;
and the preset fault type sequence acquisition module is used for acquiring a preset fault type sequence corresponding to the transmission fault information according to the historical fault type sequence.
In one possible embodiment, the second determining module includes:
the fourth determining module is used for performing linear combination on preset fault types in the preset fault type set according to a set rule and determining a preset fault type sequence corresponding to the transmission fault information;
wherein the setting rule comprises: the sequencing position of the electrical equipment fault type is earlier than the sequencing position of the electrical control equipment fault type, the sequencing position of the electrical control equipment fault type is earlier than the sequencing position of the hydraulic assembly fault type, and the sequencing position of the hydraulic assembly fault type is earlier than the sequencing position of the mechanical structure fault type.
In a possible embodiment, the apparatus further comprises:
and the second sending module is used for generating and sending a transmission fault maintenance strategy according to the transmission fault diagnosis result after the diagnosis result acquisition module works.
In a third aspect, an embodiment of the present invention provides a hydraulic automatic transmission fault diagnosis apparatus including:
a memory for storing a computer program;
a processor for executing the computer program to implement the steps of the automatic hydraulic transmission failure diagnosis method described in the first aspect.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium on which a computer program is stored, the computer program being executed by a processor to implement the steps of the method for diagnosing a malfunction of a hydraulic automatic transmission described in the first aspect.
Compared with the prior art, the invention has the following advantages and beneficial effects:
according to the invention, the preset fault type sequences corresponding to different transmission fault information and the fault diagnosis and troubleshooting strategy are obtained in advance, the preset fault type sequences are linear combinations of a plurality of preset fault types, and the possibility that the actual fault corresponding to the transmission fault information belongs to the preset fault type arranged more ahead is higher. And when specific transmission fault information is received, generating a fault diagnosis and troubleshooting strategy according to the corresponding preset fault type sequence so as to efficiently perform fault troubleshooting and quickly obtain a transmission fault diagnosis result, thereby efficiently realizing the fault diagnosis of the hydraulic automatic transmission.
Drawings
In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present specification, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a method for diagnosing a failure of an automatic hydraulic transmission according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a hydraulic automatic transmission fault diagnosis device provided by an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art based on the embodiments of the present invention belong to the scope of protection of the embodiments of the present invention.
Referring to fig. 1, fig. 1 is a flowchart of a method for diagnosing a fault of a hydraulic automatic transmission according to an embodiment of the present invention, where the embodiment of the method may be applied to a transmission diagnostic device having functions of data communication, data processing, data storage, and the like, the transmission diagnostic device may be a handheld small device, or may be an industrial personal computer often having a related diagnostic function, and specifically includes steps 11 to 17.
Step 11, transmission fault information is received.
Specifically, the hardware device corresponding to this embodiment may be connected to a vehicle controller through a CAN bus, so as to receive the working data of the automatic hydraulic transmission in real time. The transmission fault information may be a transmission fault code returned by the vehicle controller.
In practical application, the transmission fault code can conform to the SAEJ1939 protocol standard so as to obtain higher industry universality, and the transmission fault code can also be defined according to a customized coding rule of the transmission fault code.
And step 12, determining the preset fault type according to the preset fault type sequence corresponding to the transmission fault information.
Specifically, in this embodiment, a transmission fault diagnosis expert database is pre-constructed, and the coupled thousands of working conditions are sorted and sorted respectively from the aspects of electrical, electronic control, hydraulic pressure, structure and the like of the transmission, and faults are analyzed from surface to line and from point to point, and specific troubleshooting methods are listed for fault phenomena, so as to prompt the possible reasons of the problems, the specific problem processing methods and other contents.
The transmission fault diagnosis expert database in the embodiment further comprises preset fault type sequences corresponding to different transmission fault information, the preset fault type sequences are linear combinations of a plurality of preset fault types, the probability that actual faults corresponding to the transmission fault information belong to the preset fault types arranged in front of each other is high, fault troubleshooting is performed according to the preset fault type sequences, and fault troubleshooting time can be effectively shortened.
Specifically, in this embodiment, before step 11, a preset fault type sequence corresponding to the transmission fault information is determined by linearly combining preset fault types in a preset fault type set; the preset fault type set comprises one or more of an electrical equipment fault type, an electric control equipment fault type, a hydraulic assembly fault type and a mechanical structure fault type.
Specifically, the electrical equipment fault type may be a fault of an electrical element of the hydraulic automatic transmission and a circuit fault, such as a controller power-on fault, a memory hardware fault, a controllable switch fault, a line short-circuit fault, a line open-circuit fault, and the like; the type of the electric control equipment fault can be a control fault related to the hydraulic automatic transmission in the process of executing a control command, such as a controller communication fault, an execution equipment execution error fault, a control self-locking fault and the like; the hydraulic component fault type can be related faults of a hydraulic mechanism of the hydraulic automatic transmission, such as an under-pressure fault, an insufficient flow fault, an over-high oil temperature fault, a vibration fault of the hydraulic component and the like; the mechanical structure fault type may be a fault associated with mechanical hardware of the hydraulic automatic transmission, such as a clutch stuck fault, a friction plate ablation fault, and the like.
Here, the present invention further provides a specific determination scheme of a preset fault type sequence corresponding to transmission fault information, including: step 21 to step 23.
And step 21, determining the statistical frequency of the historical fault type corresponding to the transmission fault information according to the historical fault record data of the transmission fault information.
Specifically, the historical fault data of the same type of hydraulic automatic transmission is collected in advance, so that historical fault record data of different types of transmission fault information is obtained, and then the statistical frequency of various types of historical faults in each type of transmission fault information can be determined.
Specifically, the historical failure type may be any one of an electrical equipment failure type, an electrical control equipment failure type, a hydraulic assembly failure type, and a mechanical structure failure type.
And step 22, sequencing the historical fault types from large to small according to the statistical times to obtain a historical fault type sequence.
In the step, the historical occurrence times of the historical fault types are sequenced to obtain a candidate sequence of actual faults corresponding to fault information of a certain transmission in a period.
And 23, acquiring a preset fault type sequence corresponding to the transmission fault information according to the historical fault type sequence.
Specifically, in this step, the first N items and their sequence arranged in the history fault type sequence may be directly used as the preset fault type sequence, and the history fault type and its sequence whose history occurrence frequency exceeds the set frequency may also be used as the preset fault type sequence, which may be flexibly set in specific applications.
In addition, after a large number of test analyses, the invention summarizes a better sequencing rule of the preset fault type sequence, and the fault situation of the hydraulic automatic transmission can be quickly positioned according to the preset fault type sequence generated by the rule, specifically:
and 31, performing linear combination on preset fault types in the preset fault type set according to a set rule, and determining a preset fault type sequence corresponding to the transmission fault information.
Wherein the setting rule comprises: the sequencing position of the electrical equipment fault type is earlier than the sequencing position of the electrical control equipment fault type, the sequencing position of the electrical control equipment fault type is earlier than the sequencing position of the hydraulic assembly fault type, and the sequencing position of the hydraulic assembly fault type is earlier than the sequencing position of the mechanical structure fault type.
The preset rule is to perform sequencing combination on preset fault types in a preset fault type set, the specific preset fault type set may include one or more of an electrical equipment fault type, an electrical control equipment fault type, a hydraulic assembly fault type and a mechanical structure fault type, and a preset fault type sequence may be obtained according to the preset rule.
The electrical equipment fault type, the electrical control equipment fault type, the hydraulic assembly fault type and the mechanical structure fault type can all comprise one or more sub-faults, the preset fault type set can comprise one or more sub-faults of each fault type, the finally obtained preset fault type sequence also comprises the sub-faults, the positions of the sub-faults are located at the positions of the fault types to which the sub-faults belong, and the positions of the sub-faults under the same fault type can be flexibly set.
After the specific preset fault type sequence is determined, selecting a preset fault type as the current fault preset type according to the sequence, and if the preset fault type further comprises a plurality of sub-faults, the current fault preset type also comprises the sub-faults.
And step 13, generating and sending a fault diagnosis and troubleshooting strategy corresponding to the preset fault type.
Specifically, the transmission failure diagnosis expert database pre-constructed in the embodiment further includes different preset failure types of troubleshooting strategies corresponding to each transmission failure information, and the troubleshooting strategies can give a prompt to a field technician to instruct the field technician to inspect the vehicle, so as to locate a specific failure type according to an inspection result returned by the field technician.
And 14, receiving the return information of the fault diagnosis and troubleshooting strategy.
Specifically, the troubleshooting strategy for fault diagnosis may be "checking whether the circuit is open or not", and the return information may be "circuit open" or "circuit not open" through field inspection by a field technician.
And step 15, judging whether the returned information meets the condition criterion of the fault situation corresponding to the fault diagnosis and troubleshooting strategy.
Specifically, each troubleshooting strategy corresponds to a condition criterion of a fault condition, when the returned information meets the limit of the condition criterion, the step considers that the fault condition corresponding to the troubleshooting strategy occurs currently, and if the returned information does not meet the limit of the condition criterion, the step considers that the fault condition corresponding to the troubleshooting strategy does not occur currently.
And step 16, if the current fault type does not meet the preset fault type, returning to the step 12, and re-determining the current fault type.
Specifically, when the fault diagnosis and troubleshooting strategy is to check whether a circuit is broken or not and the condition criterion is to return information of 'circuit breaking', the hydraulic automatic transmission is determined to have circuit breaking fault, and if the field technician passes the field check and returns 'circuit not breaking', the return information is determined to be not in accordance with the condition criterion of the fault situation corresponding to the fault diagnosis and troubleshooting strategy.
At this time, according to the sequence of the preset fault type sequence, the next preset fault type is selected as the preset fault type of this time, and fault troubleshooting is performed again.
And step 17, if the fault condition is met, taking the fault situation corresponding to the fault diagnosis troubleshooting strategy as a fault diagnosis result of the transmission.
Specifically, when the fault diagnosis and troubleshooting strategy is "whether the circuit is broken" or not ", and the condition criterion is" circuit broken "as the return information, it is determined that the circuit broken fault occurs in the automatic hydraulic transmission", and if the field technician returns "circuit broken" through field inspection, it is determined that the return information meets the condition criterion of the fault situation corresponding to the fault diagnosis and troubleshooting strategy, and at this time, the transmission fault diagnosis result corresponding to the transmission fault information is "circuit broken fault occurs in the automatic hydraulic transmission".
Of course, after the transmission fault diagnosis result corresponding to the transmission fault information is determined, a field technician is usually an owner of the vehicle, and most probably does not know how to repair the fault, and at this time, the invention also provides a function of automatically providing a maintenance strategy, specifically:
and 41, generating and sending a transmission fault maintenance strategy according to the transmission fault diagnosis result.
Specifically, the transmission fault maintenance strategy may be a maintenance recommendation such as restarting a vehicle, trying to wire, replacing a component, and the like, or a recommendation such as "the fault maintenance is difficult, please contact after-sales processing in the following manner" and the like.
According to the embodiment, a corresponding maintenance strategy can be provided for field technicians according to the difficulty degree of the fault, and the maintenance efficiency of the fault of the hydraulic automatic transmission is improved.
Here, the present invention also provides a practical case in which the above-described embodiments are applied.
The case is a handheld transmission diagnostic device, and internal software of the handheld transmission diagnostic device adopts a producer-consumer model architecture by utilizing Labview and transmits data and flow in a data flow mode to execute CAN acquisition, CAN analysis and event response. The event response is through man-machine interaction operations such as data storage, CAN bus monitoring, fault troubleshooting, monitoring and calibration.
The software for this case uses the case structure (case structure) of labview to build a database of expert fault diagnosis. And respectively establishing conditional structure branches aiming at each fault code, and forming a corresponding two-dimensional character string array by using a troubleshooting method, a problem reason and a processing method of a fault diagnosis expert database corresponding to each fault code.
And the real-time one-by-one switching display of the fault codes is realized through a software interface button. An event branch of the fault code selection button is established by using an event structure (event structure) of Labview. In the corresponding event branch, the index value of the array is changed, so that the switching display of different checking methods is realized, and the corresponding checking method and the corresponding processing method are displayed in a character string display frame.
When a fault occurs, selecting a conditional branch corresponding to the execution of a fault code, calculating the size of a two-dimensional character string array in the conditional branch by using the array size (array size) of labview, determining the number of elements in each dimension of the array, and determining a current fault code troubleshooting method; when the collected signals are normal and the gear indication is wrong, the electric control components such as a controller and a gear selector of the transmission are checked and processed to eliminate problems; when the gear indication is normal but the system working pressure is abnormal, the hydraulic system of the transmission is checked, and professional after-sales personnel are required to be contacted for processing if necessary; after the problems of the electric, electric and hydraulic systems are eliminated, the operation process needs to be checked and confirmed, and under the condition that the operation is correct, professional after-sales personnel need to be contacted for processing.
Here, the troubleshooting process of this case will be described by taking the fault code "177/03" as an example.
1) The preset fault type sequence corresponding to the fault code "177/03" is searched from the expert database of the transmission fault diagnosis: electrical equipment fault type → electrical control equipment fault type → hydraulic assembly fault type.
2) And sending a checking strategy corresponding to the 'electrical equipment fault type' to a technician to judge whether the collected signal is normal or not.
3) If the returned information is abnormal, the fault diagnosis result of the transmission is determined to be electric component fault, and a suggestion of checking sensors and wire harnesses is given;
if the returned information is normal, a checking strategy corresponding to the electric control equipment fault type, namely whether the transmission gear indication is normal, is sent to a technician.
4) If the returned information is abnormal, the fault diagnosis result of the transmission is determined to be the fault of the electric control component, and a suggestion of checking the controller and the gear selector is given;
if the returned information is normal, a corresponding checking strategy of the hydraulic assembly fault type, namely whether the working pressure of the transmission is normal, is sent to a technician.
5) If the returned information is abnormal, the fault diagnosis result of the transmission is determined to be a fault of a hydraulic system, and a suggestion that professional after-sales personnel are required to be contacted for processing is given;
and if the returned information is normal, sending a checking strategy of 'whether the misoperation' exists to the technical staff.
6) If the returned information is 'no', a suggestion of 'please contact professional after-sales personnel for processing' is given;
if the return information is 'yes', a suggestion of're-operation is required according to the specification' is given.
Based on the same inventive concept as the method, an embodiment of the present invention further provides a hydraulic automatic transmission fault diagnosis apparatus, as shown in fig. 2, which is a schematic structural diagram of the embodiment of the apparatus, and the apparatus includes:
a first receiving module 51 for receiving transmission fault information;
the first determining module 52 is configured to determine a preset fault type according to a preset fault type sequence corresponding to the transmission fault information;
the first sending module 53 is configured to generate and send a fault diagnosis troubleshooting strategy corresponding to the preset fault type;
a second receiving module 54, configured to receive return information of the troubleshooting strategy;
a first judging module 55, configured to judge whether the returned information meets a condition criterion of a fault situation corresponding to the fault diagnosis and troubleshooting policy;
a first updating module 56, configured to, when the returned information does not meet the condition criterion of the fault situation corresponding to the fault diagnosis and troubleshooting policy, return to the first determining module, and re-determine the current fault type;
and the diagnosis result obtaining module 57 is configured to, when the returned information meets the condition criterion of the fault situation corresponding to the fault diagnosis and troubleshooting strategy, take the fault situation corresponding to the fault diagnosis and troubleshooting strategy as a transmission fault diagnosis result.
In a possible embodiment, the apparatus further comprises:
the second determining module is used for performing linear combination on preset fault types in a preset fault type set before the first receiving module works, and determining a preset fault type sequence corresponding to the transmission fault information; the preset fault type set comprises one or more of an electrical equipment fault type, an electric control equipment fault type, a hydraulic assembly fault type and a mechanical structure fault type.
In one possible embodiment, the second determining module includes:
the third determining module is used for determining the statistical times of the historical fault types corresponding to the transmission fault information according to the historical fault record data of the transmission fault information;
the historical fault type sequence acquisition module is used for sequencing the historical fault types from large to small according to the statistical times to obtain a historical fault type sequence;
and the preset fault type sequence acquisition module is used for acquiring a preset fault type sequence corresponding to the transmission fault information according to the historical fault type sequence.
In one possible embodiment, the second determining module includes:
the fourth determining module is used for performing linear combination on preset fault types in the preset fault type set according to a set rule and determining a preset fault type sequence corresponding to the transmission fault information;
wherein the setting rule comprises: the sequencing position of the electrical equipment fault type is earlier than the sequencing position of the electrical control equipment fault type, the sequencing position of the electrical control equipment fault type is earlier than the sequencing position of the hydraulic assembly fault type, and the sequencing position of the hydraulic assembly fault type is earlier than the sequencing position of the mechanical structure fault type.
In a possible embodiment, the apparatus further comprises:
and the second sending module is used for generating and sending a transmission fault maintenance strategy according to the transmission fault diagnosis result after the diagnosis result acquisition module works.
Based on the same inventive concept as the foregoing embodiment, an embodiment of the present invention further provides a hydraulic automatic transmission fault diagnosis apparatus, including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of any one of the hydraulic automatic transmission fault diagnosis methods described above when executing the program.
Based on the same inventive concept as in the previous embodiment, an embodiment of the present invention also provides a computer-readable storage medium having stored thereon a computer program that, when executed by a processor, implements the steps of any of the automatic hydraulic transmission failure diagnosis methods described above.
The technical scheme provided by the embodiment of the invention at least has the following technical effects or advantages:
according to the embodiment of the invention, the preset fault type sequences corresponding to different transmission fault information and the fault diagnosis and troubleshooting strategy are obtained in advance, the preset fault type sequences are linear combinations of a plurality of preset fault types, and the possibility that the actual fault corresponding to the transmission fault information belongs to the preset fault type which is arranged more front is higher. And when specific transmission fault information is received, generating a fault diagnosis and troubleshooting strategy according to the corresponding preset fault type sequence so as to efficiently perform fault troubleshooting and quickly obtain a transmission fault diagnosis result, thereby efficiently realizing the fault diagnosis of the hydraulic automatic transmission.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (modules, systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A method of diagnosing a malfunction of an automatic hydraulic transmission, the method comprising:
step 11, receiving transmission fault information;
step 12, determining the current preset fault type according to a preset fault type sequence corresponding to the transmission fault information;
step 13, generating and sending a fault diagnosis and troubleshooting strategy corresponding to the preset fault type;
step 14, receiving the return information of the fault diagnosis and troubleshooting strategy;
step 15, judging whether the returned information meets the condition criterion of the fault situation corresponding to the fault diagnosis and troubleshooting strategy;
step 16, if not, returning to the step 12, and re-determining the current fault type;
and step 17, if the fault condition is met, taking the fault situation corresponding to the fault diagnosis troubleshooting strategy as a fault diagnosis result of the transmission.
2. The automatic hydraulic transmission fault diagnosis method according to claim 1, wherein, prior to the step 11, the method further comprises:
performing linear combination on preset fault types in a preset fault type set, and determining a preset fault type sequence corresponding to the transmission fault information; the preset fault type set comprises one or more of an electrical equipment fault type, an electric control equipment fault type, a hydraulic assembly fault type and a mechanical structure fault type.
3. The method for diagnosing the fault of the hydraulic automatic transmission according to claim 2, wherein the linearly combining the preset fault types in the preset fault type set and determining the preset fault type sequence corresponding to the transmission fault information comprises:
determining the statistical times of the historical fault types corresponding to the transmission fault information according to the historical fault record data of the transmission fault information;
sorting the historical fault types from large to small according to the statistical times to obtain a historical fault type sequence;
and acquiring a preset fault type sequence corresponding to the transmission fault information according to the historical fault type sequence.
4. The method for diagnosing the fault of the hydraulic automatic transmission according to claim 2, wherein the linearly combining the preset fault types in the preset fault type set and determining the preset fault type sequence corresponding to the transmission fault information comprises:
performing linear combination on preset fault types in the preset fault type set according to a set rule, and determining a preset fault type sequence corresponding to the transmission fault information;
wherein the setting rule comprises: the sequencing position of the electrical equipment fault type is earlier than the sequencing position of the electrical control equipment fault type, the sequencing position of the electrical control equipment fault type is earlier than the sequencing position of the hydraulic assembly fault type, and the sequencing position of the hydraulic assembly fault type is earlier than the sequencing position of the mechanical structure fault type.
5. The automatic hydraulic transmission fault diagnosis method according to claim 1, wherein after the step 17, the method further comprises:
and generating and sending a transmission fault maintenance strategy according to the transmission fault diagnosis result.
6. A failure diagnosis device for a hydraulic automatic transmission, characterized by comprising:
the first receiving module is used for receiving transmission fault information;
the first determining module is used for determining the preset fault type according to the preset fault type sequence corresponding to the transmission fault information;
the first sending module is used for generating and sending the fault diagnosis and troubleshooting strategy corresponding to the preset fault type;
the second receiving module is used for receiving the return information of the fault diagnosis and troubleshooting strategy;
the first judgment module is used for judging whether the returned information meets the condition criteria of the fault situation corresponding to the fault diagnosis and troubleshooting strategy;
the first updating module is used for returning to the first determining module and re-determining the fault type when the returned information does not conform to the condition criterion of the fault situation corresponding to the fault diagnosis and troubleshooting strategy;
and the diagnosis result acquisition module is used for taking the fault situation corresponding to the fault diagnosis troubleshooting strategy as a transmission fault diagnosis result when the returned information accords with the condition criterion of the fault situation corresponding to the fault diagnosis troubleshooting strategy.
7. The automatic hydraulic transmission fault diagnosis device according to claim 6, characterized in that the device further includes:
the second determining module is used for performing linear combination on preset fault types in a preset fault type set before the first receiving module works, and determining a preset fault type sequence corresponding to the transmission fault information; the preset fault type set comprises one or more of an electrical equipment fault type, an electric control equipment fault type, a hydraulic assembly fault type and a mechanical structure fault type.
8. The automatic hydraulic transmission fault diagnostic apparatus according to claim 7, wherein the second determination module includes:
the third determining module is used for determining the statistical times of the historical fault types corresponding to the transmission fault information according to the historical fault record data of the transmission fault information;
the historical fault type sequence acquisition module is used for sequencing the historical fault types from large to small according to the statistical times to obtain a historical fault type sequence;
and the preset fault type sequence acquisition module is used for acquiring a preset fault type sequence corresponding to the transmission fault information according to the historical fault type sequence.
9. A failure diagnosis apparatus for a hydraulic automatic transmission, characterized by comprising:
a memory for storing a computer program;
a processor for executing the computer program to carry out the steps of the method of any one of claims 1 to 5.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, is adapted to carry out the steps of the method of any one of claims 1 to 5.
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