CN112326070A - Temperature sensor fault diagnosis method and device, electronic equipment and storage medium - Google Patents
Temperature sensor fault diagnosis method and device, electronic equipment and storage medium Download PDFInfo
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- CN112326070A CN112326070A CN202011213585.7A CN202011213585A CN112326070A CN 112326070 A CN112326070 A CN 112326070A CN 202011213585 A CN202011213585 A CN 202011213585A CN 112326070 A CN112326070 A CN 112326070A
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Abstract
The invention belongs to the technical field of vehicle control, and discloses a temperature sensor fault diagnosis method and device, electronic equipment and a storage medium. The method comprises the following steps: the method comprises the steps of obtaining the current state of a temperature sensor of the vehicle particle catcher, and obtaining current fault information when the current state is a fault state; determining a current fault type corresponding to the current fault information according to preset diagnosis conditions; and performing logic diagnosis on the current fault information according to the current fault type to obtain a diagnosis result. According to the method, the diagnosis of the fault of the temperature sensor of the particle trap in the prior art is optimized, the fault type is analyzed and determined according to the fault information, the logic diagnosis is carried out, the diagnosis result is reasonably reported, and the fault reporting efficiency is improved, so that the fault is conveniently checked.
Description
Technical Field
The invention relates to the technical field of vehicle control, in particular to a temperature sensor fault diagnosis method and device, electronic equipment and a storage medium.
Background
A Gasoline engine particle trap (GPF) is a device for capturing and filtering particles through four modes of diffusion, interception, gravity and inertia after being discharged and reducing the emission of the particles. The inlet temperature of the gasoline engine particle trap can be used as the coordinate quantity of the regeneration mode in the regeneration working condition identification, and is very important for fault diagnosis of the inlet temperature sensor.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a temperature sensor fault diagnosis method, a temperature sensor fault diagnosis device, electronic equipment and a storage medium, and aims to realize fault diagnosis of a temperature sensor of a particle trap of the national six standards.
In order to achieve the above object, the present invention provides a method for diagnosing a fault of a temperature sensor, the method comprising the steps of:
the method comprises the steps of obtaining the current state of a temperature sensor of the vehicle particle catcher, and obtaining current fault information when the current state is a fault state;
determining a current fault type corresponding to the current fault information according to preset diagnosis conditions;
and performing logic diagnosis on the current fault information according to the current fault type to obtain a diagnosis result.
Preferably, the step of determining the current fault type corresponding to the current fault information according to preset diagnosis conditions specifically includes:
acquiring preset fault information corresponding to a preset fault type according to the preset diagnosis condition;
and matching the current fault information with each preset fault information, and when the matching is successful, taking a preset fault type corresponding to the successfully matched preset fault information as the current fault type.
Preferably, the step of performing logic diagnosis on the current fault information according to the current fault type to obtain a diagnosis result specifically includes:
determining vehicle running information according to the current fault information, and determining preset vehicle running information according to the current fault type;
performing diagnosis enabling analysis according to the preset vehicle running information and the vehicle running information;
when the diagnosis enabling analysis result meets a preset condition, determining the temperature information of the particle trap according to the current fault information;
judging a fault code according to the temperature information of the particle catcher;
and taking the fault code judgment result and the diagnosis enabling analysis result as diagnosis results.
Preferably, the vehicle travel information includes: the method comprises the following steps of (1) stopping time of a vehicle, driving time of the vehicle and fault vehicle speed of the vehicle; the preset vehicle running information comprises a preset vehicle speed threshold value, a preset shutdown threshold value and a preset running threshold value;
the step of performing diagnosis enabling analysis according to the preset vehicle running information and the vehicle running information specifically comprises the following steps:
when the vehicle fault speed is greater than a preset vehicle speed threshold value and the vehicle shutdown duration is greater than a preset shutdown threshold value;
judging that the diagnosis enabling analysis result meets a preset condition;
or when the vehicle fault speed is greater than a preset vehicle speed threshold and the vehicle running time is greater than a preset running threshold;
and judging that the diagnosis enabling analysis result meets a preset condition.
Preferably, the preset fault types comprise a high-voltage short circuit and a low-voltage short circuit, and the fault temperature value and the fault temperature duration of the particle trap are included according to the temperature information of the particle trap;
the step of judging the fault code according to the temperature information of the particle catcher specifically comprises the following steps:
when the current fault type is a high-voltage short circuit, if the fault temperature value is greater than the preset temperature threshold value and the fault temperature duration is greater than the preset temperature threshold value duration, broadcasting a fault code;
and when the current fault type is a low-voltage short circuit, if the fault temperature value is smaller than the preset temperature threshold value and the fault temperature duration is larger than the preset temperature threshold value duration, broadcasting a fault code.
Preferably, before the step of determining the fault code according to the temperature information of the particle trap, the method further includes:
and determining a preset temperature threshold value and preset temperature threshold value duration according to the current fault type.
Preferably, after the step of performing logic diagnosis on the current fault information according to the current fault type to obtain a diagnosis result, the method further includes:
acquiring a fault code judgment result and a diagnosis enabling analysis result according to the diagnosis result;
when the fault code judgment result is that fault code broadcasting is carried out, generating a diagnosis report according to the diagnosis enabling analysis result, the current fault code and the historical fault code, and displaying the diagnosis report to a user;
and when the fault code judgment result indicates that the fault code is not reported, generating a diagnosis report according to the diagnosis enabling analysis result and the historical fault code, and displaying the diagnosis report to a user.
Further, to achieve the above object, the present invention also proposes a temperature sensor failure diagnosis apparatus comprising:
the fault detection module is used for acquiring the current state of a temperature sensor of the vehicle particle trap and acquiring current fault information when the current state is a fault state;
the type judgment module is used for determining a current fault type corresponding to the current fault information according to preset diagnosis conditions;
and the logic diagnosis module is used for performing logic diagnosis on the current fault information according to the current fault type so as to obtain a diagnosis result.
In addition, to achieve the above object, the present invention also provides an electronic device, including: a memory, a processor, and a temperature sensor fault diagnostic program stored on the memory and executable on the processor, the temperature sensor fault diagnostic program configured to implement the steps of the temperature sensor fault diagnostic method as described above.
In addition, in order to achieve the above object, the present invention further proposes a storage medium having stored thereon a temperature sensor failure diagnosis program which, when executed by a processor, implements the steps of the temperature sensor failure diagnosis method as described above.
The method comprises the steps of obtaining the current state of a temperature sensor of the vehicle particle catcher, and obtaining current fault information when the current state is a fault state; determining a current fault type corresponding to the current fault information according to preset diagnosis conditions; and performing logic diagnosis on the current fault information according to the current fault type to obtain a diagnosis result. According to the method, the diagnosis of the fault of the temperature sensor of the particle trap in the prior art is optimized, the fault type is analyzed and determined according to the fault information, the logic diagnosis is carried out, the diagnosis result is reasonably reported, and the fault reporting efficiency is improved, so that the fault is conveniently checked.
Drawings
Fig. 1 is a schematic structural diagram of an electronic device in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a first embodiment of a method for diagnosing faults of a temperature sensor according to the present invention;
FIG. 3 is a schematic flow chart of a fault diagnosis method for a temperature sensor according to a second embodiment of the present invention;
FIG. 4 is a schematic flow chart illustrating a method for diagnosing faults of a temperature sensor according to a third embodiment of the present invention;
fig. 5 is a block diagram showing the configuration of the first embodiment of the failure diagnosis apparatus for a temperature sensor according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the electronic device may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a WIreless interface (e.g., a WIreless-FIdelity (WI-FI) interface). The Memory 1005 may be a Random Access Memory (RAM) Memory, or may be a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the electronic device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a storage medium, may include therein an operating system, a network communication module, a user interface module, and a temperature sensor malfunction diagnosis program.
In the electronic apparatus shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the electronic device according to the present invention may be provided in the electronic device, and the electronic device calls the temperature sensor failure diagnosis program stored in the memory 1005 through the processor 1001 and executes the temperature sensor failure diagnosis method provided by the embodiment of the present invention.
An embodiment of the present invention provides a temperature sensor fault diagnosis method, and referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of a temperature sensor fault diagnosis method according to the present invention.
In this embodiment, the temperature sensor fault diagnosis method includes the following steps:
step S10: the method comprises the steps of obtaining the current state of a temperature sensor of the vehicle particle catcher, and obtaining current fault information when the current state is a fault state.
It should be noted that the main execution body of the present embodiment is a temperature sensor fault diagnosis device, and the temperature sensor fault diagnosis device may be an ECU (Electronic Control Unit, also called "traveling computer") controller, and in the specific implementation, the number of engine cylinders of the entire vehicle to which the method is applied is not limited. In the embodiment, the code reporting requirement conforms to the definition of the GB18352.6.2016 light vehicle pollutant emission limit value and the measuring method for the OBD fault code. The ECU is mainly used as an engine controller carrier to realize the diagnosis service of the GPF temperature sensor; the GPF temperature sensor is a temperature sensor arranged at the inlet of the GPF, the type of the parts is a thermistor, the voltage is referenced to 5V, and the actually measured temperature value is reflected through a voltage signal.
It should be noted that, the current state of the temperature sensor of the vehicle particle trap is obtained in real time, and in the specific implementation, the diagnostic logic loop may be operated once within a preset loop time, where the preset loop time may be 125ms, so that the logic diagnosis is performed with the preset loop time, on one hand, the system diagnostic speed is increased, and on the other hand, the system occupancy rate is low, and the operation of other functions of the ECU controller is not affected.
It is easy to understand that the current state can be obtained through various sensors (such as a speed sensor, a transmitter rotation speed sensor, and the like) on the whole vehicle, and when the current state is not matched with a preset state of normal operation of the vehicle, it is indicated that a fault exists currently. The vehicle probably has the trouble of different degrees in the driving process, and partial trouble does not influence the operation, can resume by oneself, need not to report by mistake, if: short-term voltage anomalies, etc.; but some faults can affect the operation, and timely error reporting and even maintenance are needed. Different error reporting or error-free modes are required according to the fault states of different degrees. The current fault information includes, but is not limited to, vehicle running time, current temperature of the particulate trap, vehicle parking time, current vehicle speed of the vehicle, etc., and the current fault information refers to information in a fault state of the vehicle, rather than an error or fault existing in the information.
Step S20: and determining the current fault type corresponding to the current fault information according to preset diagnosis conditions.
It is easy to understand that when a vehicle has a fault state, the fault state is determined to obtain a fault type to which the fault state belongs, and further, whether the fault state needs to be reported by an error or not and what degree of error reporting is needed can be analyzed according to the fault type.
It should be noted that the preset diagnosis condition is used to distinguish a fault type corresponding to a fault state corresponding to the current fault information; for example, whether the fault state is a high-voltage short circuit in the driving process, a high-voltage short circuit in the power-on process, a low-voltage short circuit in the driving process and a low-voltage short circuit in the power-on process is judged according to the preset judgment condition. The fault types may include: high-voltage short circuit in the driving process, high-voltage short circuit in the power-on process, low-voltage short circuit in the driving process and low-voltage short circuit in the power-on process.
Step S30: and performing logic diagnosis on the current fault information according to the current fault type to obtain a diagnosis result.
It is easy to understand that different fault types have different fault diagnosis requirements, and the corresponding fault diagnosis requirements can be obtained according to the current fault type, so that the current fault information is subjected to logic diagnosis analysis according to the fault diagnosis requirements, and a reasonable diagnosis result is obtained.
It should be noted that the diagnosis result includes, but is not limited to, a current fault code, a historical fault code, fault information that does not conform to normal operation, a fault degree, and the like, and further, according to the fault degree, the diagnosis result may be selectively displayed or not displayed to the user.
According to the embodiment, the method optimizes the diagnosis of the fault of the temperature sensor of the particle trap in the prior art, analyzes and determines the fault type according to the fault information, carries out logic diagnosis, reasonably reports the diagnosis result, and improves the fault reporting efficiency so as to facilitate fault troubleshooting.
Referring to fig. 3, fig. 3 is a schematic flow chart of a temperature sensor fault diagnosis method according to a second embodiment of the present invention. Based on the first embodiment, in the step S20, the method for diagnosing a fault of a temperature sensor in this embodiment specifically includes:
step S21: and acquiring preset fault information corresponding to a preset fault type according to the preset diagnosis condition.
It should be noted that the preset fault information is information of a fault determination condition, for example: and judging whether the fault state is a high-voltage short circuit in the driving process, a high-voltage short circuit in the power-on process, a low-voltage short circuit in the driving process and a low-voltage short circuit in the power-on process. For example: the preset fault information is that the low-voltage circuit of the temperature sensor is short-circuited when the continuous driving time is longer than a certain preset time. A fault determination condition corresponding to a low voltage short circuit during driving.
Step S22: and matching the current fault information with each preset fault information, and when the matching is successful, taking a preset fault type corresponding to the successfully matched preset fault information as the current fault type.
It is easy to understand that, due to various reasons of the fault, there is a certain difference between the current fault information and the preset fault information, and when the matching degree between the current fault information and the preset fault information reaches the preset matching degree, the matching may be considered to be successful, for example: and if the matching degree is greater than 85% of the preset matching degree, the matching is considered to be successful, and the preset fault type corresponding to the preset fault information is taken as the current fault type.
Further, in order to improve objectivity and accuracy of the diagnosis result, the step S30 specifically includes:
step S31: and determining vehicle running information according to the current fault information, and determining preset vehicle running information according to the current fault type.
It is easy to understand that the current failure information is vehicle running information in a failure state, and thus, various items of vehicle running information are determined by the current state information, specifically, the vehicle running information includes: the vehicle stopping time, the vehicle running time and the vehicle fault speed.
It should be understood that the current fault type corresponds to preset fault information, which is a judgment condition of the vehicle fault in the preset state, so that the preset running information of the vehicle can also be obtained from the judgment condition to confirm each item of preset vehicle running information. The preset vehicle running information comprises a preset vehicle speed threshold value, a preset shutdown threshold value and a preset running threshold value.
Step S32: and carrying out diagnosis enabling analysis according to the preset vehicle running information and the vehicle running information.
It should be noted that the diagnosis enabling analysis is to determine whether each item of information in the diagnosis process satisfies the diagnosis enabling corresponding to the current fault type, and the following description is made in conjunction with a specific fault type.
Further, according to an actual diagnosis requirement, the step S32 specifically includes: when the vehicle fault speed is greater than a preset vehicle speed threshold and the vehicle shutdown duration is greater than a preset shutdown threshold, judging that the diagnosis enabling analysis result meets a preset condition; or when the vehicle fault speed is greater than a preset vehicle speed threshold and the vehicle running time is greater than a preset running threshold, judging that the diagnosis enabling analysis result meets a preset condition.
It should be noted that the fault types include a short circuit of a high-voltage circuit and a short circuit of a low-voltage circuit. In specific implementation, short circuits judged according to different time exist in the two, namely high-voltage short circuit in the driving process, high-voltage short circuit in the power-on process, low-voltage short circuit in the driving process and low-voltage short circuit in the power-on process.
In specific implementation, the judgment of the short circuit of the high-voltage circuit is as follows: when the vehicle fault speed is greater than a preset short-high speed threshold value and the vehicle shutdown duration is greater than a preset short-high shutdown threshold value, judging that the diagnosis enabling analysis result meets the requirement of short circuit of a high-voltage circuit in the power-on process; or when the vehicle fault speed is greater than a preset short and high vehicle speed threshold value and the vehicle running time is greater than a preset short and high running threshold value, judging that the diagnosis enabling analysis result meets the requirement of a high-voltage circuit short circuit in the running process.
In specific implementation, the judgment of the short circuit of the low-voltage circuit is as follows: when the vehicle fault vehicle speed is greater than a preset short-low vehicle speed threshold value and the vehicle shutdown duration is greater than a preset short-low shutdown threshold value, judging that the diagnosis enabling analysis result meets the condition of short circuit of the low-voltage circuit in the power-on process; or when the vehicle fault speed is greater than a preset short-low vehicle speed threshold value and the vehicle running time is greater than a preset short-low running threshold value, judging that the diagnosis enabling analysis result meets the condition that the low-voltage circuit is short-circuited in the running process.
Step S33: and when the diagnosis enabling analysis result meets a preset condition, determining the temperature information of the particle trap according to the current fault information.
It will be readily appreciated that after the current fault diagnosis enablement of the vehicle is confirmed, the particulate trap temperature information is further analyzed to confirm the current fault level. The preset fault types comprise a high-voltage short circuit and a low-voltage short circuit, and the fault temperature value and the fault temperature duration time of the particle trap are included according to the temperature information of the particle trap.
Step S34: and judging a fault code according to the temperature information of the particle catcher.
It is easy to understand that the fault degree can be obtained by analyzing the temperature information, so that the fault code can be broadcasted according to the fault degree.
Further, according to the actual diagnosis requirement, the step S34 specifically includes: when the current fault type is a high-voltage short circuit, if the fault temperature value is greater than the preset temperature threshold value and the fault temperature duration is greater than the preset temperature threshold value duration, broadcasting a fault code; and when the current fault type is a low-voltage short circuit, if the fault temperature value is smaller than the preset temperature threshold value and the fault temperature duration is larger than the preset temperature threshold value duration, broadcasting a fault code.
It is easy to understand that, when the current fault type is a high-voltage short circuit, the high-voltage short circuit includes a high-voltage short circuit in a power-on process and a driving process. And if the fault temperature value is greater than the preset short-high temperature threshold value and the fault temperature duration is less than or equal to the preset temperature threshold value duration, not broadcasting the fault code.
It is easy to understand that, when the current fault type is a low-voltage short circuit, the high-voltage short circuit includes a low-voltage short circuit in a power-on process and a driving process. And if the fault temperature value is smaller than the preset short low temperature threshold value and the fault temperature duration is smaller than or equal to the preset short low temperature threshold value duration, not broadcasting the fault code.
Step S35: and taking the fault code judgment result and the diagnosis enabling analysis result as diagnosis results.
It should be noted that the two diagnostic fault codes of the high-voltage short circuit in the power-on process and the driving process and the low-voltage short circuit in the power-on process and the driving process are the same, and the difference is that the diagnosis in the power-on process is performed when the ECU is powered on.
In the embodiment, the logic is designed for four diagnosis modes, namely, a high-voltage short circuit in the power-on process and the driving process, and a low-voltage short circuit in the power-on process and the driving process through diagnosis flow judgment logic, and is defined according to national standards, so that the four diagnosis modes and the two fault types of fault information can be reasonably diagnosed.
Referring to fig. 4, fig. 4 is a schematic flow chart of a temperature sensor fault diagnosis method according to a third embodiment of the present invention. Based on the first embodiment, the method for diagnosing a fault of a temperature sensor according to this embodiment further includes, after the step S30:
step S41: and acquiring a fault code judgment result and a diagnosis enabling analysis result according to the diagnosis result.
It should be understood that, according to the second embodiment, when the fault code determination result is that the fault code is not broadcast well, the fault code does not need to be broadcast. And carrying out further information display according to a specific diagnosis result.
Step S42: and when the fault code judgment result is that fault code report is carried out, generating a diagnosis report according to the diagnosis enabling analysis result, the current fault code and the historical fault code, and displaying the diagnosis report to a user.
It is easy to understand that, if the fault code broadcasting is carried out, it is indicated that the current fault degree needs to be paid attention to by a user, the current fault code is broadcasted, and the historical fault code is displayed, so that the user can conveniently carry out corresponding maintenance on the temperature sensor of the vehicle particle trap or the whole vehicle.
Step S43: and when the fault code judgment result indicates that the fault code is not reported, generating a diagnosis report according to the diagnosis enabling analysis result and the historical fault code, and displaying the diagnosis report to a user.
It is easy to understand that the fault code is broadcasted, so that the current fault degree is not serious, the fault code is not broadcasted, but the historical fault code and the diagnosis enabling analysis result still need to be displayed, and a user can conveniently correspondingly maintain the temperature sensor of the vehicle particle trap or the whole vehicle.
In the embodiment, the logic is designed for four diagnosis modes, namely, a high-voltage short circuit in the power-on process and the driving process, and a low-voltage short circuit in the power-on process and the driving process through diagnosis flow judgment logic, and is defined according to national standards, so that the four diagnosis modes and the two fault types of fault information can be reasonably diagnosed.
Referring to fig. 5, fig. 5 is a block diagram showing a configuration of a first embodiment of the fault diagnosis apparatus for a temperature sensor according to the present invention.
As shown in fig. 5, the apparatus according to the embodiment of the present invention includes:
the fault detection module 10 is configured to obtain a current state of a temperature sensor of the vehicle particulate trap, and obtain current fault information when the current state is a fault state.
It should be noted that the temperature sensor fault diagnosis device may be an ECU (Electronic Control Unit, also called "vehicle computer") controller, and in the specific implementation, there is no limit to the number of engine cylinders of the entire vehicle to which the method is applied. In this embodiment, the code reporting requirement conforms to the definition of OBD fault code of GB18352.6.2016 light vehicle pollutant emission limit and measurement method.
It should be noted that, the current state of the temperature sensor of the vehicle particle trap is obtained in real time, and in the specific implementation, the diagnostic logic loop may be operated once within a preset loop time, where the preset loop time may be 125ms, so that the logic diagnosis is performed with the preset loop time, on one hand, the system diagnostic speed is increased, and on the other hand, the system occupancy rate is low, and the operation of other functions of the ECU controller is not affected.
It is easy to understand that the current state can be obtained through various sensors (such as a speed sensor, a transmitter rotation speed sensor, and the like) on the whole vehicle, and when the current state is not matched with a preset state of normal operation of the vehicle, it is indicated that a fault exists currently. The vehicle probably has the trouble of different degrees in the driving process, and partial trouble does not influence the operation, can resume by oneself, need not to report by mistake, if: short-term voltage anomalies, etc.; but some faults can affect the operation, and timely error reporting and even maintenance are needed. Different error reporting or error-free modes are required according to the fault states of different degrees. The current fault information includes, but is not limited to, vehicle running time, current temperature of the particulate trap, vehicle parking time, current vehicle speed of the vehicle, etc., and the current fault information refers to information in a fault state of the vehicle, rather than an error or fault existing in the information.
And a type determining module 20, configured to determine a current fault type corresponding to the current fault information according to preset diagnostic conditions.
It is easy to understand that when a vehicle has a fault state, the fault state is determined to obtain a fault type to which the fault state belongs, and further, whether the fault state needs to be reported by an error or not and what degree of error reporting is needed can be analyzed according to the fault type.
It should be noted that the preset diagnosis condition is used to distinguish a fault type corresponding to a fault state corresponding to the current fault information; for example, whether the fault state is a high-voltage short circuit in the driving process, a high-voltage short circuit in the power-on process, a low-voltage short circuit in the driving process and a low-voltage short circuit in the power-on process is judged according to the preset judgment condition. The fault types may include: high-voltage short circuit in the driving process, high-voltage short circuit in the power-on process, low-voltage short circuit in the driving process and low-voltage short circuit in the power-on process.
And the logic diagnosis module 30 is configured to perform logic diagnosis on the current fault information according to the current fault type to obtain a diagnosis result.
It is easy to understand that different fault types have different fault diagnosis requirements, and the corresponding fault diagnosis requirements can be obtained according to the current fault type, so that the current fault information is subjected to logic diagnosis analysis according to the fault diagnosis requirements, and a reasonable diagnosis result is obtained.
It should be noted that the diagnosis result includes, but is not limited to, a current fault code, a historical fault code, fault information that does not conform to normal operation, a fault degree, and the like, and further, according to the fault degree, the diagnosis result may be selectively displayed or not displayed to the user.
According to the particle trap fault diagnosis device, the diagnosis of the fault of the temperature sensor of the particle trap in the prior art is optimized, the fault type is analyzed and determined according to the fault information, the logic diagnosis is performed, the diagnosis result is reasonably reported, and the fault reporting efficiency is improved, so that the fault is conveniently checked.
Furthermore, an embodiment of the present invention also provides a storage medium having a temperature sensor fault diagnosis program stored thereon, where the temperature sensor fault diagnosis program is executed by a processor to perform the steps of the temperature sensor fault diagnosis method as described above.
Since the storage medium adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here. It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited thereto.
It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.
In addition, the technical details that are not described in detail in this embodiment may be referred to a method for diagnosing a fault of a temperature sensor provided in any embodiment of the present invention, and are not described herein again. Further, it is to be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g. Read Only Memory (ROM)/RAM, magnetic disk, optical disk), and includes several instructions for enabling a terminal device (e.g. a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A method of diagnosing a fault in a temperature sensor, the method comprising:
the method comprises the steps of obtaining the current state of a temperature sensor of the vehicle particle catcher, and obtaining current fault information when the current state is a fault state;
determining a current fault type corresponding to the current fault information according to preset diagnosis conditions;
and performing logic diagnosis on the current fault information according to the current fault type to obtain a diagnosis result.
2. The method for diagnosing faults of a temperature sensor according to claim 1, wherein the step of determining the current fault type corresponding to the current fault information according to preset diagnosis conditions specifically includes:
acquiring preset fault information corresponding to a preset fault type according to the preset diagnosis condition;
and matching the current fault information with each preset fault information, and when the matching is successful, taking a preset fault type corresponding to the successfully matched preset fault information as the current fault type.
3. The method for diagnosing faults of a temperature sensor according to claim 2, wherein the step of performing logic diagnosis on the current fault information according to the current fault type to obtain a diagnosis result specifically includes:
determining vehicle running information according to the current fault information, and determining preset vehicle running information according to the current fault type;
performing diagnosis enabling analysis according to the preset vehicle running information and the vehicle running information;
when the diagnosis enabling analysis result meets a preset condition, determining the temperature information of the particle trap according to the current fault information;
judging a fault code according to the temperature information of the particle catcher;
and taking the fault code judgment result and the diagnosis enabling analysis result as diagnosis results.
4. The temperature sensor malfunction diagnosis method according to claim 3, characterized in that the vehicle travel information includes: the method comprises the following steps of (1) stopping time of a vehicle, driving time of the vehicle and fault vehicle speed of the vehicle; the preset vehicle running information comprises a preset vehicle speed threshold value, a preset shutdown threshold value and a preset running threshold value;
the step of performing diagnosis enabling analysis according to the preset vehicle running information and the vehicle running information specifically comprises the following steps:
when the vehicle fault speed is greater than a preset vehicle speed threshold value and the vehicle shutdown duration is greater than a preset shutdown threshold value;
judging that the diagnosis enabling analysis result meets a preset condition;
or when the vehicle fault speed is greater than a preset vehicle speed threshold and the vehicle running time is greater than a preset running threshold;
and judging that the diagnosis enabling analysis result meets a preset condition.
5. The method according to claim 3, wherein the predetermined fault types include a high voltage short circuit and a low voltage short circuit, and the information on the temperature of the particulate trap includes a fault temperature value and a fault temperature duration of the particulate trap;
the step of judging the fault code according to the temperature information of the particle catcher specifically comprises the following steps:
when the current fault type is a high-voltage short circuit, if the fault temperature value is greater than the preset temperature threshold value and the fault temperature duration is greater than the preset temperature threshold value duration, broadcasting a fault code;
and when the current fault type is a low-voltage short circuit, if the fault temperature value is smaller than the preset temperature threshold value and the fault temperature duration is larger than the preset temperature threshold value duration, broadcasting a fault code.
6. The method of claim 5, wherein the step of determining the fault code based on the temperature information of the particulate trap is preceded by the step of:
and determining a preset temperature threshold value and preset temperature threshold value duration according to the current fault type.
7. The method according to any one of claims 3 to 6, wherein after the step of performing logic diagnosis on the current fault information according to the current fault type to obtain a diagnosis result, the method further comprises:
acquiring a fault code judgment result and a diagnosis enabling analysis result according to the diagnosis result;
when the fault code judgment result is that fault code broadcasting is carried out, generating a diagnosis report according to the diagnosis enabling analysis result, the current fault code and the historical fault code, and displaying the diagnosis report to a user;
and when the fault code judgment result indicates that the fault code is not reported, generating a diagnosis report according to the diagnosis enabling analysis result and the historical fault code, and displaying the diagnosis report to a user.
8. A temperature sensor failure diagnosis apparatus characterized by comprising:
the fault detection module is used for acquiring the current state of a temperature sensor of the vehicle particle trap and acquiring current fault information when the current state is a fault state;
the type judgment module is used for determining a current fault type corresponding to the current fault information according to preset diagnosis conditions;
and the logic diagnosis module is used for performing logic diagnosis on the current fault information according to the current fault type so as to obtain a diagnosis result.
9. An electronic device, characterized in that the electronic device comprises: a memory, a processor, and a temperature sensor fault diagnostic program stored on the memory and executable on the processor, the temperature sensor fault diagnostic program configured to implement the steps of the temperature sensor fault diagnostic method of any one of claims 1 to 7.
10. A storage medium having stored thereon a temperature sensor malfunction diagnosis program, which when executed by a processor, implements the steps of the temperature sensor malfunction diagnosis method according to any one of claims 1 to 7.
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