Generator working state detection method, device, unit and storage medium

Abstract

This application provides a method, apparatus, unit, and storage medium for detecting the operating status of a generator. The method includes: acquiring the battery voltage of a storage battery after detecting engine startup; determining whether the generator is in a preset overload state based on the battery voltage and a preset voltage limit; if the generator is in a preset overload state, determining the overload level of the generator based on the battery voltage; and outputting the overload level of the generator. In identifying the generator overload state, no additional hardware costs are required, significantly reducing the consumption of manpower and resources, and the efficiency is high.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a method, device, unit, and storage medium for detecting the operating status of a generator. Background Technology

[0002] The car alternator is the primary energy source for a vehicle. Its function is to supply power to all electrical devices except the starter motor, and to charge the battery, while the engine is running normally. However, short-term overload operation can cause the alternator stator winding temperature to rise, accelerating the aging of insulation and shortening the alternator's lifespan. Prolonged overload operation may lead to the burnout of the stator windings, ultimately causing the alternator to fail to generate electricity. Therefore, identifying the operating status of the car alternator is crucial.

[0003] Currently, the commonly used vehicle electrical balance test method in existing technology identifies the working status of the generator. That is, by balancing the power supply and consumption of the vehicle power system, the power of the generator, battery and electrical equipment is matched to determine the working status of the generator.

[0004] However, testing the generator's operating status through vehicle electrical balance testing requires a significant amount of manpower and resources, resulting in low efficiency. Summary of the Invention

[0005] This application provides a method, device, unit, and storage medium for detecting the operating status of a generator, in order to solve the problem that the existing technology of detecting the operating status of a generator through electrical balance testing results in a large amount of manpower and material resources being consumed and inefficient.

[0006] In a first aspect, embodiments of this application provide a method for detecting the operating status of a generator, including:

[0007] After detecting engine start, obtain the battery voltage;

[0008] Based on the battery voltage and the preset voltage limit, determine whether the generator is in a preset overload state;

[0009] If the generator is in a preset overload state, the overload level of the generator is determined based on the battery voltage.

[0010] Overload rating of the output generator.

[0011] In one possible design, the electronic controller unit pre-stores the correspondence between different voltage threshold ranges and overload levels; accordingly, the overload level of the generator is determined based on the battery voltage, including: determining the voltage threshold range in which the battery voltage is located; and, based on the correspondence, determining the overload level corresponding to the voltage threshold range as the overload level of the generator.

[0012] In one possible design, the generator is determined to be in a preset overload state based on the battery voltage and a preset voltage limit, including: if the battery voltage is greater than or equal to the preset voltage limit, the generator is determined not to be in a preset overload state; if the battery voltage is less than the preset voltage limit, the generator is determined to be in a preset overload state.

[0013] In one possible design, after determining the generator's overload level based on the battery voltage, the process also includes: recording the duration of the generator at each overload level; and calculating the cumulative time the generator has been in an overload state based on the duration of each overload level.

[0014] In one possible design, the cumulative time the generator is in overload condition is calculated based on the duration of each overload level, including: multiplying the duration of each overload level by the corresponding weighting coefficient to obtain the weighted duration of each overload level; and summing the weighted durations of each overload level to obtain the cumulative time the generator is in overload condition.

[0015] In one possible design, after calculating the cumulative time the generator is in an overload state based on the duration of each overload level, the design also includes: if the cumulative time is greater than or equal to a preset judgment threshold, then an alarm or prompt is output.

[0016] In one possible design, after calculating the cumulative time the generator was in an overload state based on the duration of each overload level, the process also includes uploading the cumulative time the generator was in an overload state to the cloud platform.

[0017] In one possible design, before acquiring the battery voltage, the step of acquiring the battery voltage is not performed if a start switch signal is detected.

[0018] Secondly, embodiments of this application provide a generator operating status detection device, comprising:

[0019] The acquisition module is used to acquire the battery voltage of the storage battery;

[0020] The judgment module is used to determine whether the generator is in a preset overload state based on the battery voltage and the preset voltage limit.

[0021] The determination module is used to determine the overload level of the generator based on the battery voltage if the generator is in a preset overload state.

[0022] Output module, used to output the generator's overload level.

[0023] Thirdly, embodiments of this application provide an electronic controller unit, including at least one processor and a memory; the memory stores computer-executable instructions; the at least one processor executes the computer-executable instructions stored in the memory, causing the at least one processor to perform the methods described in the first aspect and various possible designs of the first aspect.

[0024] Fourthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the methods described in the first aspect and various possible designs of the first aspect.

[0025] Fifthly, embodiments of this application provide a computer program product, including a computer program, which, when executed by a processor, implements the first aspect and various possible designs of the first aspect as described above.

[0026] The generator operating status detection method, device, unit, and storage medium provided in this application embodiment have pre-stored the correspondence between different voltage threshold ranges and overload levels in the electronic controller unit. During engine operation, the battery voltage of the storage battery is obtained, and the overload level of the current operating status of the generator is determined based on the battery voltage. In the process of identifying the generator overload status, no additional hardware cost is required, which can reduce the consumption of a lot of manpower and material resources, and the efficiency is high. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the engine system provided in an embodiment of this application;

[0029] Figure 2 A flowchart illustrating a generator operating status detection method provided in one embodiment of this application;

[0030] Figure 3 A flowchart illustrating a generator operating status detection method provided in another embodiment of this application;

[0031] Figure 4 This is a schematic diagram of the generator operating status detection device provided in the embodiments of this application;

[0032] Figure 5 This is a schematic diagram of the hardware structure of the electronic controller unit provided in an embodiment of this application. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] Figure 1 This is a schematic diagram of the generator overload detection system provided in an embodiment of this application. Figure 1 As shown, the system provided in this embodiment includes: an engine 101, a generator 102, a battery 103, an electronic controller unit 104, and a cloud platform 105.

[0035] The engine 101 is used to drive the generator 102 to generate electricity; the generator 102 is used to transfer electrical energy to the battery for charging; and the battery 103 is used to supply power to the vehicle's related components.

[0036] The electronic controller unit 104 can be an ECU (Electronic Control Unit). The cloud platform 105 can be a server.

[0037] Figure 2 This is a flowchart illustrating a generator operating status detection method according to an embodiment of this application. The execution entity of this embodiment can be... Figure 1 The electronic controller unit 104 in the illustrated embodiment can also be other controllers with similar functions; this embodiment does not impose any particular limitation here. Figure 2 As shown, the method includes:

[0038] S201: After detecting engine start, obtain the battery voltage of the storage battery.

[0039] Among them, the storage battery is a starting battery that supplies power to the starter motor and ignition system when the engine starts; supplies power to electrical equipment when the generator is not generating power or the voltage is low; and assists the generator in supplying power when the generator is overloaded.

[0040] Specifically, the detection of engine start can include two methods:

[0041] The first method is to collect the engine's start signal. When the engine start signal is received, it is determined that the engine has started. The second method is to collect the engine's vibration signal. When the vibration signal reaches a certain amplitude threshold, it is determined that the engine has started.

[0042] Specifically, the process of obtaining the battery voltage is as follows: after the engine starts, the electronic control unit reads the battery voltage in real time.

[0043] S202: Determine whether the generator is in a preset overload state based on the battery voltage and the preset voltage limit.

[0044] Specifically, S202 includes Sa to Sb:

[0045] Sa: If the battery voltage is greater than or equal to the preset voltage limit, the generator is determined not to be in the preset overload state.

[0046] Sb: If the battery voltage is less than the preset voltage limit, the generator is determined to be in a preset overload state.

[0047] The preset voltage limit is a pre-set overload voltage limit, denoted by V1.

[0048] Specifically, if the detected battery voltage V≥V1, the generator is determined to be not overloaded or slightly overloaded and is not in the preset overload state; if the detected battery voltage V<V1, the generator is determined to be in the preset overload state.

[0049] S203: If the generator is in a preset overload state, the overload level of the generator shall be determined according to the battery voltage.

[0050] Specifically, the electronic controller unit pre-stores the correspondence between different voltage threshold ranges and overload levels. Accordingly, S203 specifically includes Sc~Sd:

[0051] Sc: Determines the voltage threshold range within which the battery voltage falls.

[0052] Sd: Based on the correspondence, the overload level corresponding to the voltage threshold range is determined as the overload level of the generator.

[0053] Among them, overload voltage limits V1, V2, V3...V are set respectively. n The correspondence between different voltage threshold ranges and overload levels is as follows: If the electronic controller unit detects a battery voltage V2 ≤ V < V1, i.e., within the (V1, V2) range, then the generator is determined to be under level 1 overload. If the electronic controller unit detects a battery voltage V3 ≤ V < V2, i.e., within the (V2, V3) range, then the generator is determined to be under level 2 overload. If the electronic controller unit detects a battery voltage V... n+1 ≤V<V n At that time, that is, in (V) n V n+1 If the value is within the specified range, then the generator is determined to be under level n overload.

[0054] For example, if the electronic controller unit detects that the battery voltage is within the range of (V2, V3), then the generator is in a level 2 overload state.

[0055] S204: Overload rating of the output generator.

[0056] Specifically, the overload level can be sent to the vehicle's display screen or instrument panel for display; alternatively, the overload level can be sent to the user's terminal or other devices.

[0057] As can be seen from the above embodiments, the electronic controller unit pre-stores the correspondence between different voltage threshold ranges and overload levels. During engine operation, by acquiring the battery voltage of the storage battery and determining the overload level of the generator's current operating state based on the battery voltage, no additional hardware cost is required in the process of identifying the generator's overload operating state, which can reduce the consumption of a large amount of manpower and material resources and is highly efficient.

[0058] Figure 3 This is a flowchart illustrating a generator operating status detection method according to another embodiment of this application. The execution entity in this embodiment can be... Figure 1 The electronic controller unit 104 in the illustrated embodiment is not particularly limited in this embodiment. Figure 3 As shown, the method includes:

[0059] S301: Determine whether a start switch signal is detected. If yes, proceed to S302; otherwise, proceed to S303.

[0060] S302: If a start switch signal is detected, the step of obtaining the battery voltage is not performed.

[0061] The start switch signal is the signal that the electronic controller unit receives when the engine starts.

[0062] Specifically, if a start switch signal is detected, it is determined that the engine is in the start state, and there is no need to perform the step of obtaining the battery voltage.

[0063] S303: After detecting engine start, obtain the battery voltage.

[0064] S304: Determine whether the generator is in a preset overload state based on the battery voltage and the preset voltage limit.

[0065] S305: If the generator is not in a pre-overload state, there is no need to record the duration.

[0066] S306: If the generator is in a preset overload state, the overload level of the generator shall be determined according to the battery voltage.

[0067] S307: Records the duration of the generator at each overload level.

[0068] The duration of the generator under each overload level includes: the duration t of the generator under level i overload. i , where i takes values ​​from 1 to n.

[0069] Specifically, the electronic controller unit cumulatively records and stores the duration t of different levels of overload states. i , where i takes values ​​from 1 to n.

[0070] S308: Calculate the cumulative time the generator is in an overload state based on the duration of each overload level.

[0071] Specifically, S306: Specifically Se~Sf:

[0072] Se: Multiply the duration of each overload level by the corresponding weighting coefficient to obtain the weighted duration of each overload level;

[0073] The weighting coefficients are obtained through calibration based on product characteristic tests, etc.

[0074] For example, the weighting coefficient for the Level 1 overload state is denoted as ε1, the weighting coefficient for the Level 2 overload state is denoted as ε2, and the weighting coefficient for the Level i overload state is denoted as ε i .

[0075] Specifically, the formula for calculating the weighted duration of overload level i is: t 权i =ε i ·t i For example, the weighted duration calculation formula for a Level 1 overload state is t. 权1 =ε1·t1; The weighted duration calculation formula for the level 2 overload state is t. 权2 =ε2·t2.

[0076] Sf: The weighted summation of the durations of each overload level yields the cumulative time the generator is in an overload state.

[0077] Specifically, the formula for calculating the cumulative time the generator is in an overload state is as follows:

[0078] t = t 权1 +t 权1 +…+t 权n

[0079] S309: If the cumulative time is greater than or equal to the preset judgment threshold, an alarm or prompt will be output.

[0080] The electronic controller unit sets the judgment threshold T.

[0081] Specifically, if the cumulative time the generator is in an overload state is greater than or equal to the preset judgment threshold T, an alarm or prompt will be output.

[0082] Specifically, output alarms or prompts include: displaying warning lights or fault codes. Users can learn the meaning of the fault codes by referring to the fault manual or consulting customer service.

[0083] S310: Upload the cumulative time the generator has been in an overload state to the cloud platform.

[0084] Among them, cloud platforms exist on the Internet and provide storage capabilities.

[0085] Specifically, the cumulative time the generator is in an overload state is recorded, stored, and uploaded to the cloud platform.

[0086] As described in the above embodiments, after determining the overload level of the generator based on the battery voltage, the cumulative time the generator is in an overload state is recorded to provide more accurate data on the duration of the generator being in an overload state. When the cumulative time is greater than or equal to the preset judgment threshold of the electronic controller unit, the electronic controller unit outputs a fault code or warning light. Based on the fault code or warning light, the corresponding fault problem in the instruction manual is identified to understand the overload state of the engine. The cumulative time the generator is in an overload state is uploaded to the cloud platform to achieve the effect of data accumulation. In the initial operation phase, the overload duration when the generator reaches its life limit can be statistically determined through a large amount of cumulative time data and fault report mileage. At the same time, different industries have different definitions of judgment thresholds, and the data accumulated by the cloud platform can guide different industries to match different specifications of generators.

[0087] Figure 4 This is a schematic diagram of the generator operating status detection device provided in an embodiment of this application. Figure 4 As shown, the generator operating status detection device 40 includes: an acquisition module 401, a judgment module 402, a determination module 403, and an output module 404.

[0088] The acquisition module 401 is used to acquire the battery voltage of the storage battery;

[0089] The judgment module 402 is used to determine whether the generator is in a preset overload state based on the battery voltage and the preset voltage limit.

[0090] The determination module 403 is used to determine the overload level of the generator based on the battery voltage if the generator is in a preset overload state.

[0091] Output module 404 is used to output the overload level of the generator.

[0092] The apparatus provided in this embodiment can be used to execute the technical solutions of the above method embodiments. Its implementation principle and technical effects are similar, and will not be described again here.

[0093] In one possible design, the electronic controller unit pre-stores the correspondence between different voltage threshold ranges and overload levels;

[0094] Accordingly, module 403 is specifically used to: determine the voltage threshold range in which the battery voltage is located; and, based on the correspondence, determine the overload level corresponding to the voltage threshold range as the overload level of the generator.

[0095] In one possible design, the device further includes: a duration processing module 405, used to record the duration of the generator at each overload level; and to calculate the cumulative time the generator is in an overload state based on the duration of each overload level.

[0096] Accordingly, the duration processing module 405 is specifically used to: multiply the duration of each overload level by the corresponding weighting coefficient to obtain the weighted duration of each overload level; and sum the weighted durations of each overload level to obtain the cumulative time the generator is in an overload state.

[0097] In one possible design, the output module 404 is also used to output an alarm or prompt if the accumulated time is greater than or equal to a preset judgment threshold.

[0098] In one possible design, the device also includes an upload module 406 for uploading the cumulative time the generator has been in an overload state to the cloud platform.

[0099] In one possible design, the device also includes a detection module 407 for uploading the cumulative time the generator has been in an overload state to a cloud platform.

[0100] The apparatus provided in this embodiment can be used to execute the technical solutions of the above method embodiments. Its implementation principle and technical effects are similar, and will not be described again here.

[0101] Figure 5 This is a schematic diagram of the hardware structure of the electronic controller unit provided in an embodiment of this application. Figure 5 As shown, the electronic controller unit 50 in this embodiment includes: a processor 501 and a memory 502; wherein

[0102] Memory 502 is used to store instructions executed by the computer;

[0103] The processor 501 is configured to execute computer execution instructions stored in the memory to implement the various steps performed in the above method embodiments. For details, please refer to the relevant descriptions in the foregoing method embodiments.

[0104] Alternatively, the memory 502 can be either standalone or integrated with the processor 501.

[0105] When the memory 502 is set up independently, the electronic controller unit also includes a bus 503 for connecting the memory 502 and the processor 501.

[0106] This application also provides a computer-readable storage medium storing computer-executable instructions. When the processor executes the computer-executable instructions, the above-mentioned generator operating status detection method is implemented.

[0107] This application also provides a computer program product, which includes a computer program stored in a computer-readable storage medium. At least one processor can read the computer program from the computer-readable storage medium. When the at least one processor executes the computer program, it can implement the technical solution of the generator operating status detection method in the above embodiments.

[0108] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or modules may be electrical, mechanical, or other forms.

[0109] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to implement the solution of this embodiment according to actual needs.

[0110] Furthermore, the functional modules in the various embodiments of this application can be integrated into one processing unit, or each module can exist physically separately, or two or more modules can be integrated into one unit. The unit composed of the above modules can be implemented in hardware or in the form of hardware plus software functional units.

[0111] The integrated modules described above, implemented as software functional modules, can be stored in a computer-readable storage medium. These software functional modules, stored in a storage medium, include several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute some steps of the methods of the various embodiments of this application.

[0112] It should be understood that the aforementioned processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly manifested as being executed by a hardware processor, or executed by a combination of hardware and software modules within the processor.

[0113] The memory may include high-speed RAM, and may also include non-volatile storage (NVM), such as at least one disk storage device, and may also be a USB flash drive, external hard drive, read-only memory, disk or optical disc, etc.

[0114] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0115] The aforementioned storage medium can be implemented from any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The storage medium can be any available medium accessible to general-purpose or special-purpose computers.

[0116] An exemplary storage medium is coupled to a processor, enabling the processor to read information from and write information to the storage medium. Alternatively, the storage medium can be an integral part of the processor. Both the processor and the storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and storage medium can exist as discrete components in an electronic device or host device.

[0117] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0118] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A method for detecting the operating status of a generator, characterized in that, Applications in electronic control units, including: After detecting engine start, obtain the battery voltage; Based on the battery voltage and the preset voltage limit, determine whether the generator is in a preset overload state; If the generator is in the preset overload state, the overload level of the generator is determined according to the battery voltage; Output the overload level of the generator; After determining the overload level of the generator based on the battery voltage, the method further includes: Record the duration of the generator at each overload level; The cumulative time the generator was in an overload state was calculated based on the duration of each overload level; The calculation of the cumulative time the generator is in an overload state based on the duration of each overload level includes: Multiply the duration of each overload level by the corresponding weighting coefficient to obtain the weighted duration of each overload level; The cumulative time the generator was in overload condition was obtained by summing the weighted durations of each overload level.

2. The method according to claim 1, characterized in that, The electronic controller unit has a pre-stored correspondence between different voltage threshold ranges and overload levels; Accordingly, determining the overload level of the generator based on the battery voltage includes: Determine the voltage threshold range in which the battery voltage falls; Based on the correspondence, the overload level corresponding to the voltage threshold range is determined as the overload level of the generator.

3. The method according to claim 1, characterized in that, The step of determining whether the generator is in the preset overload state based on the battery voltage and the preset voltage limit includes: If the battery voltage is greater than or equal to the preset voltage limit, then the generator is determined not to be in the preset overload state. If the battery voltage is less than the preset voltage limit, the generator is determined to be in the preset overload state.

4. The method according to claim 1, characterized in that, After calculating the cumulative time the generator was in an overload state based on the duration of each overload level, the method further includes: If the cumulative time is greater than or equal to a preset threshold, an alarm or prompt will be output.

5. The method according to claim 1, characterized in that, After calculating the cumulative time the generator was in an overload state based on the duration of each overload level, the method further includes: Upload the cumulative time the generator has been in an overload state to the cloud platform.

6. The method according to claim 1, characterized in that, Before obtaining the battery voltage of the storage battery, the method further includes: If a start switch signal is detected, the step of obtaining the battery voltage is not performed.

7. A generator operating status detection device, characterized in that, Applications in electronic control units, including: The acquisition module is used to acquire the battery voltage of the storage battery; The judgment module is used to determine whether the generator is in a preset overload state based on the battery voltage and the preset voltage limit. The determination module is used to determine the overload level of the generator based on the battery voltage if the generator is in a preset overload state. An output module is used to output the overload level of the generator; The duration processing module is used to record the duration of the generator at each overload level; and to calculate the cumulative time of the generator being in an overload state based on the duration of each overload level. The duration processing module is specifically used to multiply the duration of each overload level by the corresponding weighting coefficient to obtain the weighted duration of each overload level; and to sum the weighted durations of each overload level to obtain the cumulative time that the generator is in an overload state.

8. An electronic controller unit, characterized in that, The method includes at least one processor and a memory; the memory stores computer-executable instructions; the at least one processor executes the computer-executable instructions stored in the memory, causing the at least one processor to perform the method as described in any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, implement the method as described in any one of claims 1-6.

10. A computer program product, characterized in that, Includes a computer program that, when executed by a processor, implements the method of any one of claims 1-6.

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