CN110850850B - Off-line detection method, device and equipment for cooling water pump and storage medium - Google Patents
Off-line detection method, device and equipment for cooling water pump and storage medium Download PDFInfo
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- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
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Abstract
The invention relates to the field of new energy automobiles, and discloses a method, a device, equipment and a storage medium for detecting the offline of a cooling water pump, wherein the method comprises the following steps: acquiring the pull-down level time of the cooling water pump in a no-load state; when the pull-down level time is within a preset time range, adding a load to the cooling water pump in a preset step length; respectively acquiring feedback coefficients of the cooling water pump in different load states; when the feedback coefficients are all in the corresponding preset feedback range, the detection result is judged to be normal, the feedback coefficients of the cooling water pump in different load states are respectively obtained to detect whether the cooling water pump is normal or not, the blank in the field of offline detection of the cooling water pump of the new energy automobile is made up, the detection of the cooling water pump before leaving the factory is conveniently and quickly completed, the workload of offline detection is reduced, and the production efficiency is improved.
Description
Technical Field
The invention relates to the field of new energy automobiles, in particular to an offline detection method, device and equipment of a cooling water pump and a storage medium.
Background
With the development of new energy vehicles, new energy vehicles may become a popular trip mode in the future, a cooling device of the new energy vehicles is one of the core components of the new energy vehicles, a cooling water pump is the key part of the cooling device, the detection technology of the cooling device of the traditional fuel oil vehicle tends to be perfect at present, but the technology of offline detection of the cooling water pump related to the new energy vehicles is very few, and therefore, how to realize offline detection of the cooling water pump becomes a problem to be solved urgently.
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 method, a device and equipment for detecting the off-line of a cooling water pump and a storage medium, and aims to solve the technical problem of how to realize the off-line detection of the cooling water pump.
In order to achieve the purpose, the invention provides an off-line detection method of a cooling water pump, which comprises the following steps:
acquiring the pull-down level time of the cooling water pump in a no-load state;
when the pull-down level time is within a preset time range, adding a load to the cooling water pump in a preset step length;
respectively acquiring feedback coefficients of the cooling water pump in different load states;
and when the feedback coefficients are all in the corresponding preset feedback range, judging that the detection result is normal.
Preferably, before the step of obtaining the pull-down time when the cooling water pump is in the idle state, the method further includes:
acquiring a level period of a cooling water pump in an idle state;
and when the level period is in a preset period range, executing the step of acquiring the pull-down level time when the cooling water pump is in an idle state.
Preferably, the step of respectively obtaining the feedback coefficients of the cooling water pump in different load states specifically includes:
acquiring a first feedback coefficient of the cooling water pump in an idle state, wherein the first feedback coefficient is a feedback value;
and acquiring a second feedback coefficient of the cooling water pump in a non-idle state, wherein the second feedback coefficient is a feedback value, a level period and a pull-down level time.
Preferably, after the step of obtaining the pull-down time when the cooling water pump is in the idle state, the method further includes:
when the pull-down level time is not in a preset range, judging that the cooling water pump has a fault;
correspondingly, after the step of respectively obtaining the feedback coefficients of the cooling water pump in different load states, the method further includes:
and when any feedback coefficient is not in the corresponding preset feedback range, judging that the cooling water pump has a fault.
Preferably, after the step of determining that the cooling water pump has a fault when the pull-down level time is not within the preset range, the method further includes:
generating a corresponding fault code, and sending the fault code to a vehicle control unit, so that the vehicle control unit records and analyzes the fault code, and displays a fault prompt corresponding to the fault code;
correspondingly, after the step of determining that the cooling water pump has a fault when any one of the feedback coefficients is not within the corresponding preset feedback range, the method further includes:
and generating a corresponding fault code, and sending the fault code to the vehicle control unit, so that the vehicle control unit records and analyzes the fault code, and displays a fault prompt corresponding to the fault code.
Preferably, after the step of generating a corresponding fault code and sending the fault code to the vehicle control unit so that the vehicle control unit records and analyzes the fault code and displays a fault prompt corresponding to the fault code, the method further includes:
counting the types and the generation times of the fault codes;
and when the generation times of any fault code is detected to be greater than a preset value, sending out warning information and generating a corresponding statistical report.
Preferably, after the step of determining that the detection result is normal when the feedback coefficients are all within the corresponding preset feedback ranges, the method further includes:
and displaying the detection result according to a preset display mode, and sending the detection result to the vehicle control unit.
In addition, in order to achieve the above object, the present invention further provides an offline detection device for a cooling water pump, the device including:
the time acquisition module is used for acquiring the pull-down level time of the cooling water pump in an idle state;
the water pump loading module is used for adding a load to the cooling water pump according to a preset step length when the pull-down level time is within a preset time range;
the feedback acquisition module is used for respectively acquiring feedback coefficients of the cooling water pump in different load states;
and the result judging module is used for judging that the detection result is normal when the feedback coefficients are all in the corresponding preset feedback range.
In addition, in order to achieve the above object, the present invention further provides an offline detection apparatus for a cooling water pump, the apparatus including: the off-line detection program of the cooling water pump is configured to realize the steps of the off-line detection method of the cooling water pump.
In addition, in order to achieve the above object, the present invention further provides a storage medium, in which an offline detection program of the cooling water pump is stored, and the offline detection program of the cooling water pump, when executed by a processor, implements the steps of the offline detection method of the cooling water pump as described above.
According to the invention, the pull-down level time of the cooling water pump in the no-load state is obtained, when the pull-down level time is in the preset time range, the load is added to the cooling water pump in the preset step length, then the feedback coefficients of the cooling water pump in different load states are respectively obtained, when the feedback coefficients are in the corresponding preset feedback ranges, the detection result is judged to be normal, the blank of the field of offline detection of the cooling water pump of the new energy automobile is made up, the detection of the cooling water pump before leaving the factory is conveniently and rapidly completed, the workload of the offline detection is reduced, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic structural diagram of an off-line detection device of a cooling water pump 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 detecting a cooling water pump down line according to the present invention;
FIG. 3 is a schematic flow chart illustrating a second embodiment of a method for detecting a cooling water pump down line according to the present invention;
fig. 4 is a block diagram of the structure of the offline detection device of the cooling water pump according to the first embodiment of 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 offline detection device of a cooling water pump in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the offline detection apparatus of the cooling water pump 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.
It will be appreciated by those skilled in the art that the configuration shown in fig. 1 does not constitute a limitation of the offline sensing apparatus of the cooling water pump, and may include more or fewer components than those shown, or some components in combination, 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 data storage module, a network communication module, a user interface module, and an offline detection program of the cooling water pump.
In the offline detection apparatus of the cooling water pump 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 of the offline detection device of the cooling water pump of the present invention may be disposed in the offline detection device of the cooling water pump, and the offline detection device of the cooling water pump calls the offline detection program of the cooling water pump stored in the memory 1005 through the processor 1001, and executes the offline detection method of the cooling water pump provided by the embodiment of the present invention.
An embodiment of the present invention provides a method for detecting a cooling water pump offline, and referring to fig. 2, fig. 2 is a schematic flow diagram of a first embodiment of the method for detecting a cooling water pump offline according to the present invention.
In this embodiment, the offline detection method of the cooling water pump includes the following steps:
step S10: acquiring the pull-down level time of the cooling water pump in a no-load state;
it should be noted that, the execution body of this embodiment may be an Electronic Control Unit (ECU), the ECU obtains a level period when the cooling water pump is in an idle state, and obtains a pull-down time of the cooling water pump when the level period is within a preset period range, where the pull-down time is a time required for lowering a voltage from a high level to a low level, in a specific implementation, a voltage corresponding to the high level may be 4.7V to 5.0V, and a voltage corresponding to the low level may be 0V to 0.8V, and if the voltage corresponding to the detected high level is 5V and the voltage corresponding to the low level is 0V, the pull-down time may be a time required for lowering the voltage from 5.0V to 0V, and for dividing the high level and the low level and setting the preset period range, a person skilled in the art may set the pull-down time as required, the present embodiment does not limit this.
Step S20: when the pull-down level time is within a preset time range, adding a load to the cooling water pump in a preset step length;
it is easy to understand that the loads required to be added in different time ranges are different, so when the ECU detects that the pull-down level time is within the preset time range, the ECU needs to add the load to the cooling water pump in a corresponding preset step length to measure the feedback coefficient of the cooling water pump in different load states, for example, when the preset time range is set to 0 second to 0.25 second, the corresponding load state is an idle state, that is, no load is added; when the preset time range is set to be 0.25-0.85 seconds, corresponding to the light load state, the load can be added to the cooling water pump to enable the cooling water pump to operate at one half of the maximum power; when the preset time range is set to be 0.85-1.45 seconds, the corresponding load state is a full load state, and a load can be added to the cooling water pump to enable the cooling water pump to operate at the maximum power.
Step S30: respectively acquiring feedback coefficients of the cooling water pump in different load states;
in this embodiment, the ECU respectively obtains feedback coefficients of the cooling water pump in different load states, obtains a first feedback value of the cooling water pump in an idle state, and uses the first feedback value as the feedback coefficient of the cooling water pump in the idle state; in a non-idling state, a second feedback value, a level period, and a pull-down level time of the cooling water pump are obtained, and the second feedback value, the level period, and the pull-down level time are used as feedback coefficients of the cooling water pump in the non-idling state.
Step S40: and when the feedback coefficients are all in the corresponding preset feedback range, judging that the detection result is normal.
It is easy to understand that when the ECU detects that the feedback coefficients are all within the corresponding preset feedback range, the ECU determines that the detection result is normal, displays the detection result according to a preset display mode, and sends the detection result to the vehicle control unit, where the preset display mode may be highlight display of text or picture information on an electronic screen, blinking display at a fixed frequency, and the like, and the comparison in this embodiment is not limited. For example, setting a preset feedback range of a feedback value when the cooling water pump operates at half of the maximum power to be 1.9-2.1, setting a preset feedback range of a pull-down level time to be 0.25-0.85 seconds, setting a preset feedback range of a level period to be 4.8-5.2 seconds, when the feedback value when the cooling water pump operates at half of the maximum power is detected to be 2, the pull-down level time to be 0.5 seconds, and the period to be 5 seconds, judging that a detection result of the cooling water pump is normal, displaying the detection result according to a preset display mode, and sending the detection result to the vehicle control unit.
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.
This embodiment is through obtaining the time of drawing down the level when cooling water pump is in idle state draw down the level time when being in preset time range, add the load to with the preset step length cooling water pump, the reacquisition respectively the feedback coefficient of cooling water pump when different load states when the feedback coefficient all is in the corresponding preset feedback within range, judge that the testing result is normal, remedied the blank in this field of the off-line detection to cooling water pump of new energy automobile, realized convenient and fast must accomplish the detection to the cooling water pump before dispatching from the factory, reduced the work load that off-line detected, improved production efficiency.
Referring to fig. 3, fig. 3 is a schematic flow chart of a method for detecting a cooling water pump down line according to a second embodiment of the present invention.
Based on the first embodiment, in this embodiment, after step S30, the method further includes:
s301: when any feedback coefficient is not in the corresponding preset feedback range, judging that the cooling water pump has a fault;
it is easy to understand that when detecting that any feedback coefficient is not in the corresponding preset feedback range, the ECU determines that the cooling water pump has a fault, where the feedback coefficient includes multiple coefficients, and when detecting that any coefficient in the multiple coefficients is not in the corresponding preset feedback range, the ECU may determine that the cooling water pump has a fault, for example, when detecting feedback coefficients in three states, i.e., an idle state, a light load state, and a full load state, the ECU acquires a first feedback value that the cooling water pump is in an idle state, and uses the first feedback value as a feedback coefficient of the cooling water pump in the idle state; when the cooling water pump is in a light load state, acquiring a second feedback value, a second level period and second pull-down level time of the cooling water pump, and taking the second feedback value, the level period and the second pull-down level time as feedback coefficients of the cooling water pump in the light load state; and in addition, after the step S10, when the pull-down level time in the idle state is not within the preset range, it may be determined that the cooling water pump has a fault.
S302: generating a corresponding fault code, and sending the fault code to a vehicle control unit, so that the vehicle control unit records and analyzes the fault code, and displays a fault prompt corresponding to the fault code;
it should be noted that the fault analysis in this embodiment is based on a Unified Diagnostic Service (UDS), and when it is detected that the cooling water pump has a fault, a corresponding fault code is generated, and the fault code is sent to the vehicle controller, so that the vehicle controller records and analyzes the fault code, and displays a fault prompt corresponding to the fault code, where the fault prompt may be set as a simple prompt or a detailed prompt according to an actual requirement, and after the vehicle controller records and analyzes the fault code, the vehicle controller may also record instruction information received based on the fault code, so that when the same or similar fault occurs again, a fault resolution option guide is generated according to the instruction information received for the same or similar fault in a history.
S303: counting the types and the generation times of the fault codes;
it is easy to understand that, in actual operation, the types of faults are various, and even continuous faults caused by system setting errors may occur, so the present embodiment also needs to count the types and generation times of fault codes, and timely process faults with excessive occurrence times, so as to avoid the occurrence of a phenomenon that the working efficiency is reduced due to excessive occurrence times of the same fault.
S304: and when the generation times of any fault code is detected to be greater than a preset value, sending out warning information and generating a corresponding statistical report.
It should be noted that, after the fault code is generated according to the specific situation of the fault, the type of the fault code and the corresponding generation frequency can be counted, when it is detected that the generation frequency of any type of fault code is greater than the preset value, it is indicated that such a fault needs to be paid attention, that is, a batch fault occurs in a detected object, and a worker needs to be notified to take emergency treatment, and the occurrence frequency of the same fault is too many, which may not only be a fault problem of the cooling water pump, but also may be a problem of a non-detected object itself, such as a system setting error, and the like.
In the embodiment, the corresponding fault code is generated and sent to the vehicle control unit, so that the vehicle control unit records and analyzes the fault code, displays the fault prompt corresponding to the fault code, counts the types and the generation times of the fault code, and sends out the warning information and generates the corresponding statistical report to display the fault data more intuitively when the generation times of any type of fault code is detected to be greater than the preset value, thereby reducing the occurrence of potential faults, improving the reliability of detection, reducing the workload of fault processing, and improving the working efficiency of fault processing.
In addition, an embodiment of the present invention further provides a storage medium, where the storage medium stores an offline detection program of the cooling water pump, and the offline detection program of the cooling water pump, when executed by the processor, implements the steps of the offline detection method of the cooling water pump as described above.
Referring to fig. 4, fig. 4 is a block diagram illustrating a first embodiment of an offline detection device of a cooling water pump according to the present invention.
As shown in fig. 4, the offline detection device of a cooling water pump according to an embodiment of the present invention includes:
the time acquisition module 10 is used for acquiring the pull-down level time when the cooling water pump is in an idle state;
the water pump loading module 20 is configured to add a load to the cooling water pump in a preset step length when the pull-down level time is within a preset time range;
the feedback acquisition module 30 is configured to acquire feedback coefficients of the cooling water pump in different load states;
and the result judging module 40 is used for judging that the detection result is normal when the feedback coefficients are all in the corresponding preset feedback ranges.
This embodiment is through obtaining the time of drawing down the level when cooling water pump is in idle state draw down the level time when being in preset time range, add the load to with the preset step length cooling water pump, the reacquisition respectively the feedback coefficient of cooling water pump when different load states when the feedback coefficient all is in the corresponding preset feedback within range, judge that the testing result is normal, remedied the blank in this field of the off-line detection to cooling water pump of new energy automobile, realized convenient and fast must accomplish the detection to the cooling water pump before dispatching from the factory, reduced the work load that off-line detected, improved production efficiency.
Based on the first embodiment of the offline detection device of the cooling water pump, the second embodiment of the offline detection device of the cooling water pump is provided.
In this embodiment, the result determining module 40 is further configured to determine that the cooling water pump has a fault when any feedback coefficient is not within a corresponding preset feedback range;
the result determination module 40 is further configured to generate a corresponding fault code, and send the fault code to the vehicle control unit, so that the vehicle control unit records and analyzes the fault code, and displays a fault prompt corresponding to the fault code;
the result judgment module 40 is further configured to count the types and the generation times of the fault codes;
the result determining module 40 is further configured to send warning information and generate a corresponding statistical report when the generation times of any type of fault codes detected is greater than a preset value.
Other embodiments or specific implementation manners of the off-line detection device of the cooling water pump can refer to the above method embodiments, and are not described herein again.
It should 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 solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., a rom/ram, a magnetic disk, an optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, 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. An off-line detection method of a cooling water pump is characterized by comprising the following steps:
acquiring the pull-down level time of the cooling water pump in a no-load state;
when the pull-down level time is within a preset time range, adding a load to the cooling water pump in a preset step length;
respectively acquiring feedback coefficients of the cooling water pump in different load states;
and when the feedback coefficients are all in the corresponding preset feedback range, judging that the detection result is normal.
2. The method of claim 1, wherein the step of obtaining the pull-down time when the cooling water pump is in the idle state is preceded by the step of:
acquiring a level period of a cooling water pump in an idle state;
and when the level period is in a preset period range, executing the step of acquiring the pull-down level time when the cooling water pump is in an idle state.
3. The method according to claim 2, wherein the step of obtaining the feedback coefficients of the cooling water pump in different load states respectively comprises:
acquiring a first feedback coefficient of the cooling water pump in an idle state, wherein the first feedback coefficient is a feedback value;
and acquiring a second feedback coefficient of the cooling water pump in a non-idle state, wherein the second feedback coefficient is a feedback value, a level period and a pull-down level time.
4. The method of claim 1, wherein the step of obtaining the pull-down time when the cooling water pump is in the idle state is followed by the step of:
when the pull-down level time is not in a preset range, judging that the cooling water pump has a fault;
correspondingly, after the step of respectively obtaining the feedback coefficients of the cooling water pump in different load states, the method further includes:
and when any feedback coefficient is not in the corresponding preset feedback range, judging that the cooling water pump has a fault.
5. The method according to claim 4, wherein after the step of determining that the cooling water pump has a fault when the pull-down time is not within the preset range, the method further comprises:
generating a corresponding fault code, and sending the fault code to a vehicle control unit, so that the vehicle control unit records and analyzes the fault code, and displays a fault prompt corresponding to the fault code;
correspondingly, after the step of determining that the cooling water pump has a fault when any one of the feedback coefficients is not within the corresponding preset feedback range, the method further includes:
and generating a corresponding fault code, and sending the fault code to the vehicle control unit, so that the vehicle control unit records and analyzes the fault code, and displays a fault prompt corresponding to the fault code.
6. The method of claim 5, wherein after the steps of generating a corresponding fault code and sending the fault code to the vehicle control unit so that the vehicle control unit records and parses the fault code and displays a fault prompt corresponding to the fault code, the method further comprises:
counting the types and the generation times of the fault codes;
and when the generation times of any fault code is detected to be greater than a preset value, warning information is sent out and a corresponding statistical report is generated.
7. The method according to any one of claims 1 to 6, wherein after the step of determining that the detection result is normal when the feedback coefficients are all within the corresponding preset feedback ranges, the method further comprises:
and displaying the detection result according to a preset display mode, and sending the detection result to the vehicle control unit.
8. An off-line detection device for a cooling water pump, the device comprising:
the time acquisition module is used for acquiring the pull-down level time of the cooling water pump in an idle state;
the water pump loading module is used for adding a load to the cooling water pump according to a preset step length when the pull-down level time is within a preset time range;
the feedback acquisition module is used for respectively acquiring feedback coefficients of the cooling water pump in different load states;
and the result judging module is used for judging that the detection result is normal when the feedback coefficients are all in the corresponding preset feedback range.
9. An offline detection device for a cooling water pump, the device comprising: a memory, a processor and a cooling water pump down detection program stored on the memory and operable on the processor, the cooling water pump down detection program configured to implement the steps of the cooling water pump down detection method according to any one of claims 1 to 7.
10. A storage medium having stored thereon an offline detection program of a cooling water pump, the offline detection program of the cooling water pump, when executed by a processor, implementing the steps of the offline detection method of a cooling water pump according to any one of claims 1 to 7.
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| CN114228731B (en) * | 2021-11-30 | 2024-02-02 | 江铃汽车股份有限公司 | Water pump fault diagnosis method, system, storage medium and electric automobile |
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