Method and device for analyzing suspected fault of cold start temperature test

Abstract

The invention discloses a method and a device for analyzing a suspected fault of cold start-up temperature inspection. The analysis method comprises the steps that when the judgment result of cold-state starting temperature detection of the vehicle is suspected faults, the vehicle speed of the vehicle and / or the rotating speed of an air compressor are / is obtained in real time; in the waiting duration corresponding to the vehicle speed of the vehicle and / or the rotating speed of the air compressor, the external environment temperature difference value between the current moment and the cold state starting moment is calculated in real time, and the air inlet temperature difference value between the current moment and the cold state starting moment is calculated in real time; and when the external environment temperature difference value is larger than an external environment temperature threshold value and / or the air inlet temperature difference value is larger than an air inlet temperature threshold value, the suspected fault is set to be invalid. The technical scheme of the invention is applied to the condition of cold start, and when the vehicle has a relatively large environment temperature change (such as garage shifting) in a short time, the false alarm of a temperature detection fault is avoided, so that the use experience of a user is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy vehicles, and particularly relates to a method and device for analyzing suspected faults of cold start temperature inspection. BACKGROUND

[0002] After a new energy vehicle is parked for a long time, the values of all temperature sensors should be close when the vehicle is started in cold state. However, in some cases (such as moving to another place), all temperature sensors of the vehicle may not be consistent. At this time, it is easy to misreport a temperature inspection fault, but in fact, no temperature sensor fault has occurred, which causes additional trouble to the user and thus results in a poor user experience. How to exclude the suspected fault of temperature inspection before misreporting occurs has become an urgent issue in the industry. SUMMARY

[0003] The present application provides a method and device for analyzing suspected faults of cold start temperature inspection, which can avoid misreporting of temperature inspection faults when the vehicle experiences a large change in ambient temperature in a short time (such as moving to another place) in the case of cold start.

[0004] According to a first aspect of the present application, a method for analyzing suspected faults of cold start temperature inspection is provided, which comprises:

[0005] When the judgment result of the cold start temperature inspection of the vehicle is a suspected fault, the speed of the vehicle and / or the speed of the air compressor are acquired in real time;

[0006] During the waiting time corresponding to the speed of the vehicle and / or the speed of the air compressor, the difference between the ambient temperature at the current time and the ambient temperature at the cold start time is calculated in real time, and the difference between the intake air temperature at the current time and the intake air temperature at the cold start time is calculated in real time;

[0007] When the difference between the ambient temperature is greater than the ambient temperature threshold and / or the difference between the intake air temperature is greater than the intake air temperature threshold, the suspected fault is set as invalid.

[0008] In one embodiment, the waiting time corresponding to the speed of the vehicle and / or the speed of the air compressor comprises:

[0009] The ambient temperature is obtained by an ambient temperature sensor at the front position of the vehicle, and the intake air temperature is obtained by an air filter temperature sensor at the air filter position of the vehicle;

[0010] In a preset speed-speed-step analysis model, the step corresponding to the speed of the vehicle and / or the speed of the air compressor is analyzed according to the speed of the vehicle and / or the speed of the air compressor;

[0011] According to the preset step length threshold and the step length, the waiting time corresponding to the vehicle speed and / or the rotation speed of the air compressor is calculated.

[0012] In an embodiment, the ambient temperature threshold and the intake temperature threshold comprise:

[0013] In the case of the temperature at the cold start moment, the ambient temperature difference and the intake temperature difference after running the waiting time are obtained;

[0014] The preset ambient temperature coefficient is multiplied by the ambient temperature difference to obtain the ambient temperature threshold, wherein the preset ambient temperature coefficient is a positive number;

[0015] The preset intake temperature coefficient is multiplied by the intake temperature difference to obtain the intake temperature threshold, wherein the preset intake temperature coefficient is less than the preset ambient temperature coefficient, and the preset intake temperature coefficient is a positive number.

[0016] In an embodiment, the ambient temperature threshold and the intake temperature threshold further comprise:

[0017] When the ambient temperature difference and the intake temperature difference are negative numbers, the low-temperature correction coefficient is used to correct the ambient temperature threshold and the intake temperature threshold, and the low-temperature correction coefficient is a coefficient greater than 1;

[0018] When the ambient temperature difference and the intake temperature difference are positive numbers, the high-temperature correction coefficient is used to correct the ambient temperature threshold and the intake temperature threshold, and the high-temperature correction coefficient is a coefficient less than 1.

[0019] In an embodiment, further comprising:

[0020] At any moment of the waiting time, when the ambient temperature difference is greater than the ambient temperature threshold and / or the intake temperature difference is greater than the intake temperature threshold, the real-time calculation is stopped and the suspected fault is set to be invalid.

[0021] In an embodiment, the preset vehicle speed-rotation speed-step length analysis model comprises:

[0022] According to the measured data, a preset artificial intelligence model is trained to obtain the preset vehicle speed-rotation speed-step length analysis model having a corresponding relationship between the vehicle speed and / or the rotation speed of the air compressor and the step length, wherein the vehicle speed and the step length are in a positive proportional relationship, and the rotation speed of the air compressor and the step length are in a positive proportional relationship.

[0023] According to a second aspect of the present application, there is provided an analysis device for verifying a suspected fault of a cold start temperature test, applied to a vehicle, comprising:

[0024] an obtaining module, configured to obtain a vehicle speed and / or a rotating speed of an air compressor of the vehicle in real time when a result of the cold start temperature test of the vehicle is a suspected fault;

[0025] a calculating module, configured to calculate a difference between an ambient temperature at a current time and an ambient temperature at a cold start time, and calculate a difference between an intake temperature at the current time and an intake temperature at the cold start time in real time during a waiting time corresponding to the vehicle speed and / or the rotating speed of the air compressor;

[0026] a setting module, configured to set the suspected fault as invalid when the difference between the ambient temperature at the current time and the ambient temperature at the cold start time is greater than an ambient temperature threshold and / or the difference between the intake temperature at the current time and the intake temperature at the cold start time is greater than an intake temperature threshold.

[0027] In one embodiment, the obtaining module, the calculating module and the setting module are controlled to perform any of the above analysis device methods for verifying a suspected fault of a cold start temperature test.

[0028] According to a third aspect of the present application, there is provided an electronic device, comprising a communication interface, a processor, and a memory.

[0029] The memory is configured to store program instructions, and the program instructions, when executed by the processor in communication connection with the memory through the communication interface, implement any of the above analysis device methods for verifying a suspected fault of a cold start temperature test.

[0030] According to a fourth aspect of the present application, there is provided a computer readable storage medium, having computer program instructions stored thereon, and the computer program instructions, when executed by a computer (e.g., a processor in the computer), implement any of the above analysis methods for verifying a suspected fault of a cold start temperature test.

[0031] In summary, the application provides an analysis method and device for suspected fault of cold start temperature test, which comprises: when the determination result of the cold start temperature test of the vehicle is suspected fault, the vehicle speed and / or the rotating speed of the air compressor are acquired in real time; during the waiting time corresponding to the vehicle speed and / or the rotating speed of the air compressor, the difference between the ambient temperature at the current time and the cold start time is calculated in real time, and the difference between the intake temperature at the current time and the cold start time is calculated in real time; when the ambient temperature difference is greater than the ambient temperature threshold and / or the intake temperature difference is greater than the intake temperature threshold, the suspected fault is set as invalid. The technical scheme of the application is applied to the cold start condition, and when the vehicle has a large environmental temperature change in a short time (such as moving the library), the temperature test fault is avoided from being misreported, so that the accuracy of the temperature test fault is improved, and the use experience of the user is improved.

[0032] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the present application. The objects and other advantages of the present application can be realized and attained by means of the instrumentalities particularly pointed out in the written description and claims hereof as well as the appended drawings.

[0033] The technical scheme of the present application will be further described in detail below with the help of the drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the specific embodiments of the present application or the technical scheme in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings without creative labor on the basis of these drawings.

[0035] Figure 1 A flowchart of an analysis method for suspected fault of cold start temperature test provided for an embodiment of the present application;

[0036] Figure 2 A flowchart of another analysis method for suspected fault of cold start temperature test provided for an embodiment of the present application;

[0037] Figure 3 A flowchart of another analysis method for suspected fault of cold start temperature test provided for an embodiment of the present application;

[0038] Figure 4 A flowchart of another analysis method for suspected fault of cold start temperature test provided for an embodiment of the present application;

[0039] Figure 5A flow chart of an analysis method of suspected fault by cold start temperature test provided for an embodiment of the present application;

[0040] Figure 6 A flow chart of an analysis method of suspected fault by cold start temperature test provided for an embodiment of the present application;

[0041] Figure 7 A structure diagram of an analysis device of suspected fault by cold start temperature test provided for an embodiment of the present application;

[0042] Figure 8 A structure diagram of an electronic device provided for an embodiment of the present application. DETAILED DESCRIPTION

[0043] The features and exemplary embodiments of various aspects of the present application will be described below in detail, in order to make the purposes, technical solutions and advantages of the present application more clear and apparent, the present application will be further described in detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, but not to limit the present application. The present application can be implemented without some of these specific details by those skilled in the art. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0044] It should be noted that, in this paper, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the elements defined by the statement "include" do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0045] As shown in Figure 1 The present application provides an analysis method of suspected fault by cold start temperature test, which comprises:

[0046] In step S11, when the judgment result of the cold start temperature test of the vehicle is suspected fault, the vehicle speed and / or the rotating speed of the air compressor of the vehicle are acquired in real time;

[0047] In step S12, during the waiting time corresponding to the vehicle speed and / or the rotation speed of the air compressor, the difference between the ambient temperature at the current time and the ambient temperature at the cold start time is calculated in real time, and the difference between the intake temperature at the current time and the intake temperature at the cold start time is calculated in real time.

[0048] In step S13, when the difference between the ambient temperature is greater than the ambient temperature threshold and / or the difference between the intake temperature is greater than the intake temperature threshold, the suspected fault is set as invalid

[0049] In one embodiment, the fuel cell system in the vehicle is composed of an electric pile, an air supply system, a hydrogen supply system, a water thermal management system and an electric control system, wherein, in order to achieve more accurate air flow, air compressor pressure, hydrogen pressure and electric pile temperature control, a series of temperature sensors are configured in the air supply system, the hydrogen supply system and the water thermal management system, such as: ambient temperature sensor, air filter temperature sensor, inlet pile air temperature sensor, outlet pile air temperature sensor, inlet pile hydrogen temperature sensor, outlet pile hydrogen temperature sensor, inlet pile water temperature sensor and outlet pile water temperature sensor, etc. When the above temperature sensors fail (such as line short circuit or open circuit), the value is out of range, and the reasonability fault (signal is too high or too low), if continuous operation, it will cause the fuel cell system to appear unable to start, abnormal shutdown emergency stop, hydrogen air water control exceeds during running, single voltage is low, hydrogen consumption is high, parts durability is decreased, and even irreversible damage to the electric pile or system, so the temperature of the above temperature sensors should be tested and diagnosed, and corresponding effective measures should be taken to prevent the further expansion of the fault type. Among them, the cold start temperature test is a common diagnostic scheme.

[0050] The cold start temperature test calculates a reference temperature value first. If the temperature value of a certain temperature sensor is too low or too high compared with the reference temperature value, it can be determined that the temperature sensor has a temperature drift fault. Further, the temperature drift fault can be divided into positive drift and negative drift according to positive and negative values. However, in the case of cold start, when the vehicle has a large change in the ambient temperature in a short time (such as moving the garage), the ambient temperature sensor and the air filter temperature sensor in the vehicle will be quickly affected by the external environment temperature, and other temperature sensors in the vehicle will be slowly affected by the external environment temperature. In the daily use scene, the moving garage situation often occurs. The positioning of the moving garage is that the vehicle is in the garage for a long time, and there is a large difference between the temperature in the garage and the external environment temperature. When the vehicle is moved to the external environment in a short time in the case of cold start. In the above case, the temperature of the ambient temperature sensor and the air filter temperature sensor will change obviously in a short time, that is, the ambient temperature sensor and the air filter temperature sensor will be quickly affected by the external environment temperature, thereby having a large change in the temperature value. Other temperature sensors will be slowly affected by the external environment temperature, and the change in the temperature value is small. At this time, the judgment result of the cold start temperature test of the vehicle is a suspected fault. However, in fact, it is obvious that the vehicle does not have a cold start temperature test fault. The technical solution in the embodiment can solve the problem of suspected fault in the cold start temperature test. Further, the technical solution of the present application is not only suitable for the moving garage situation, but also suitable for the situation that the vehicle is moved from one temperature environment to another temperature environment with a large temperature difference in a short time in the case of cold start.

[0051] First, the vehicle is subjected to a cold start temperature test. If the judgment result is "suspected fault", it is preliminarily considered that there may be a problem. If a suspected fault is detected, the current speed of the vehicle and / or the speed of the air compressor are acquired in real time. According to the speed of the vehicle and / or the speed of the air compressor, a corresponding waiting time is set. When the value of the speed of the vehicle and / or the speed of the air compressor is larger, the waiting time is shorter; when the value of the speed of the vehicle and / or the speed of the air compressor is smaller, the waiting time is longer. The specific calculation method is to preset a step threshold value and the corresponding relationship between the speed of the vehicle and / or the speed of the air compressor and the step, and the waiting time is obtained by dividing the step threshold value by the step. During the waiting time, the external environment temperature difference between the current time and the cold start time is calculated in real time ΔT1 , and the intake air temperature difference between the current time and the cold start time is calculated in real time ΔT2 , the external environment temperature threshold is ΔT a , and the intake air temperature threshold is ΔTb When the external environment temperature difference ΔT1Greater than the threshold of the ambient temperature ΔT a And / or the intake temperature difference ΔT2 Greater than the threshold of the intake temperature ΔTb If the temperature change exceeds the preset threshold, it is considered that the suspected fault is caused by entering a temperature environment with a large temperature difference in a short time, rather than a real fault.

[0052] The technical solution in this embodiment is applied to the case of cold start. When the vehicle has a large environmental temperature change in a short time (such as moving the library), the temperature test fault is avoided from being misreported, thereby improving the accuracy of the temperature test fault and improving the user experience.

[0053] In one embodiment, as shown in FIG. 21, the method further includes the following steps S21-S22: Figure 2

[0054] In step S21, according to the vehicle speed and / or the speed of the air compressor, the step length corresponding to the vehicle speed and / or the speed of the air compressor is analyzed in the preset vehicle speed-speed-step length analysis model.

[0055] In step S22, according to the preset step length threshold and the step length, the waiting time corresponding to the vehicle speed and / or the speed of the air compressor is calculated.

[0056] In one embodiment, the ambient temperature is obtained by the ambient temperature sensor at the head position of the vehicle, and the intake temperature is obtained by the air filter temperature sensor at the air filter position of the vehicle. After the determined vehicle speed x and / or the speed of the air compressor y is input into the preset vehicle speed-speed-step length analysis model, the step length c corresponding to the vehicle speed x and / or the speed of the air compressor y is obtained, and the preset step length threshold is d. The waiting time Δwt is obtained by dividing the preset step length threshold d by the step length c. Δ wt It can be seen that the greater the value of the vehicle speed and / or the speed of the air compressor, the shorter the waiting time; the smaller the value of the vehicle speed and / or the speed of the air compressor, the longer the waiting time.

[0057] In addition to using the vehicle speed-speed-step length analysis model, the lookup table method can also be used to obtain the waiting time Δwt, as shown in Table 1 below. The horizontal axis is the vehicle speed, the vertical axis is the speed of the air compressor, and the step length value is inside the table. ​

[0058] Table 1

[0059] y-rpm / x-kph 0 30 60 80 100 0 0 0.5 1 2 3 30000 0.5 1 2 3 4 50000 1 2 3 4 5 70000 2 3 4 5 6 90000 3 4 5 6 7 110000 4 5 6 7 9

[0060] In one embodiment, such as Figure 3 As shown, it also includes the following steps S31-S33S:

[0061] In step S31, given the temperature at the cold start moment, the difference between the ambient temperature and the intake air temperature are obtained after the waiting time has elapsed.

[0062] In step S32, the preset ambient temperature coefficient is multiplied by the ambient temperature difference to obtain the ambient temperature threshold, wherein the preset ambient temperature coefficient is a positive number.

[0063] In step S33, the preset intake temperature coefficient is multiplied by the intake temperature difference to obtain the intake temperature threshold. The preset intake temperature coefficient is less than the preset ambient temperature coefficient, wherein the preset intake temperature coefficient is a positive number.

[0064] In one embodiment, the preset ambient temperature coefficient is an ambient temperature threshold per unit temperature, for example, the preset ambient temperature coefficient. ΔT a 1℃ This represents the ambient temperature threshold with a temperature change of 1°C. The preset ambient temperature coefficient is based on prior data obtained from extensive laboratory experiments and simulations, as well as repeated verification in real-world application scenarios. The preset ambient temperature coefficient... ΔT a 1℃ Multiply by the difference in ambient temperature ΔT1 That is, the external ambient temperature threshold ΔT a For example, the preset ambient temperature coefficient. ΔT a 1℃ The value is 0.2 / ℃, and the ambient temperature difference ΔT1 is 10℃. Therefore, the ambient temperature threshold is... ΔT a The value is 2. Similarly, the preset intake temperature coefficient is the intake temperature threshold per unit temperature. For example, the preset intake temperature coefficient... ΔTb2℃ This represents the intake air temperature threshold with a temperature change of 1℃. The preset intake air temperature coefficient is also based on prior data obtained from extensive laboratory experiments and simulations, as well as repeated verification in real-world application scenarios. Multiply the preset intake air temperature coefficient by... ΔTb2℃ Based on this intake air temperature difference ΔT2i.e. the intake air temperature threshold value ΔTb. For example, the preset intake air temperature coefficient ΔT a 2℃ The value of the intake air temperature threshold value ΔTb is 4.5. ΔTb

[0065] In one embodiment, as shown in Fig. 4, the method further comprises the following steps S41-S42: Figure 4

[0066] In step S41, when the ambient temperature difference value and the intake air temperature difference value are negative, the ambient temperature threshold value and the intake air temperature threshold value are corrected using a low temperature correction coefficient, which is a coefficient greater than 1.

[0067] In step S42, when the ambient temperature difference value and the intake air temperature difference value are positive, the ambient temperature threshold value and the intake air temperature threshold value are corrected using a high temperature correction coefficient, which is a coefficient less than 1.

[0068] In one embodiment, the vehicle will be subjected to heat radiation and heat conduction from various devices inside the vehicle during operation, such as heat released by the fuel cell during operation. Therefore, it needs to be considered whether it is from a low temperature environment to a high temperature environment or from a high temperature environment to a low temperature environment.

[0069] When it is from a high temperature environment to a low temperature environment, i.e. when the ambient temperature difference value and the intake air temperature difference value are negative, the ambient temperature threshold value and the intake air temperature threshold value are corrected using a low temperature correction coefficient, which is a coefficient greater than 1, so as to offset the influence of the heat generated by the vehicle during operation on the ambient temperature difference value and the intake air temperature difference value. For example, the ambient temperature difference value is -18℃, but because the heat generated by the vehicle during operation increases by 2℃, it should actually be -20℃, so the low temperature correction coefficient is a coefficient greater than 1.

[0070] When it is from a low temperature environment to a high temperature environment, i.e. when the ambient temperature difference value and the intake air temperature difference value are positive, the ambient temperature threshold value and the intake air temperature threshold value are corrected using a high temperature correction coefficient, which is a coefficient less than 1, so as to eliminate the influence of the heat generated by the vehicle during operation on the ambient temperature difference value and the intake air temperature difference value. For example, the ambient temperature difference value is +22℃, but because the heat generated by the vehicle during operation increases by 2℃, it should actually be +20℃, so the high temperature correction coefficient is a coefficient less than 1.

[0071] In one embodiment, as shown in Fig. 4, the method further comprises the following steps S41-S42: Figure 5 ​​As shown, it also includes the following step S51:

[0072] In step S51, at any point during the waiting period, if the difference between the ambient temperature and / or the difference between the intake air temperature and / or the intake air temperature exceeds the intake air temperature threshold, real-time calculation is stopped and the suspected fault is set to invalid.

[0073] In one embodiment, if the difference between the ambient temperature and / or the intake air temperature exceeds an ambient temperature threshold and / or the difference between the intake air temperature and / or the intake air temperature exceeds an intake air temperature threshold, there is no need to continue real-time calculation within the waiting period. For example, if the waiting period is 10 seconds, and at the 8th second, the ambient temperature difference of 10.2℃ exceeds the ambient temperature threshold of 10℃ and / or the intake air temperature difference of 9.1℃ exceeds the intake air temperature threshold of 9℃, then there is no need to continue real-time calculation within the following 2 seconds; real-time calculation can be stopped directly, and the suspected fault can be set to invalid.

[0074] In one embodiment, such as Figure 6 As shown, it also includes the following step S61:

[0075] In step S61, a preset artificial intelligence model is trained based on the measured data to obtain the preset vehicle speed-speed-step length analysis model, which has the correspondence between the vehicle speed and / or the air compressor speed and the step length. The vehicle speed and the step length are directly proportional, and the air compressor speed and the step length are directly proportional.

[0076] In one embodiment, a pre-defined artificial intelligence (AI) model is trained based on measured data. This model establishes a mapping relationship between vehicle speed, air compressor speed, and step size. The AI ​​model is trained using measured data and learns from historical data to achieve predictive capabilities. After training, the AI ​​model generates a vehicle speed-speed-step size analysis model. This model analyzes the relationship between vehicle speed and / or air compressor speed and step size. A direct proportional relationship exists between vehicle speed and step size; that is, as vehicle speed increases, step size increases accordingly, and vice versa. Similarly, a direct proportional relationship exists between air compressor speed and step size; an increase in air compressor speed leads to an increase in step size, and vice versa. For example, if the vehicle speed increases from 60 km / h to 120 km / h, the step size should increase accordingly. Likewise, if the air compressor speed increases from 500 rpm to 1000 rpm, the step size will also increase proportionally.

[0077] In one embodiment, Figure 7 This is a block diagram of an analysis device for detecting suspected faults during cold start-up, according to an exemplary embodiment.Figure 7 As shown in the figure, the cold start temperature test suspected fault analysis device includes an acquisition module 71, a calculation module 72, and a setting module 73.

[0078] The acquisition module 71 is configured to acquire, in real time, a vehicle speed and / or a speed of an air compressor of the vehicle when a determination result of a cold start temperature test of the vehicle is suspected fault.

[0079] The calculation module 72 is configured to calculate, in real time, a difference between an ambient temperature at a current time and an ambient temperature at a cold start time, and calculate, in real time, a difference between an intake temperature at the current time and an intake temperature at the cold start time, during a waiting duration corresponding to the vehicle speed and / or the speed of the air compressor.

[0080] The setting module 73 is configured to set the suspected fault as invalid when the difference between the ambient temperature is greater than an ambient temperature threshold and / or the difference between the intake temperature is greater than an intake temperature threshold.

[0081] The acquisition module 71, the calculation module 72, and the setting module 73 included in the block diagram of the cold start temperature test suspected fault analysis device are controlled to perform the cold start temperature test suspected fault analysis method described in any of the embodiments.

[0082] As shown in the figure, Figure 8 The present application provides an electronic device 800, which comprises a communication interface, a processor 801, and a memory 802.

[0083] The memory 802 is configured to store program instructions, which, when executed by the processor 801 connected to the memory 802 in communication through the communication interface, acquire, in real time, a vehicle speed and / or a speed of an air compressor of the vehicle when a determination result of a cold start temperature test of the vehicle is suspected fault, calculate, in real time, a difference between an ambient temperature at a current time and an ambient temperature at a cold start time, and calculate, in real time, a difference between an intake temperature at the current time and an intake temperature at the cold start time, during a waiting duration corresponding to the vehicle speed and / or the speed of the air compressor, and set the suspected fault as invalid when the difference between the ambient temperature is greater than an ambient temperature threshold and / or the difference between the intake temperature is greater than an intake temperature threshold.

[0084] The application provides a computer readable storage medium, and computer program instructions are stored on the computer readable storage medium, when the computer program instructions are executed by a processor, when a judgment result of a cold start temperature test of the vehicle is a suspected fault, the vehicle speed and / or the rotating speed of the air compressor of the vehicle are acquired in real time; during a waiting time corresponding to the vehicle speed and / or the rotating speed of the air compressor of the vehicle, a difference value between an ambient temperature at a current moment and an ambient temperature at a cold start moment is calculated in real time, and a difference value between an intake temperature at the current moment and an intake temperature at the cold start moment is calculated in real time; when the difference value between the ambient temperatures is greater than an ambient temperature threshold value and / or the difference value between the intake temperatures is greater than an intake temperature threshold value, the suspected fault is set as invalid.

[0085] It should be understood that the specific features, operations and details described above in relation to the method of the application can be applied analogously to the device and system of the application, or vice versa. In addition, each step of the method of the application described above can be performed by a corresponding component or unit of the device or system of the application.

[0086] It should be understood that each module / unit of the device of the application can be realized wholly or partly by software, hardware, firmware or a combination thereof. Each module / unit can be embedded in a processor of a computer device in hardware or firmware form or independent of the processor, or can be stored in a memory of the computer device in software form to be invoked by the processor to perform the operation of each module / unit. Each module / unit can be realized as an independent component or module, or two or more modules / units can be realized as a single component or module.

[0087] In one embodiment, a computer device is provided, which comprises a memory and a processor, and the memory stores computer instructions executable by the processor, which instruct the processor to perform each step of the method of the embodiment of the application when executed by the processor. The computer device can be a server, a terminal or any other electronic device with necessary computing and / or processing capability in a broad sense. In one embodiment, the computer device can comprise a processor, a memory, a network interface, a communication interface and the like connected by a system bus. The processor of the computer device can be used to provide necessary computing, processing and / or control capability. The memory of the computer device can comprise a non-volatile storage medium and an internal memory. The non-volatile storage medium can store an operating system, a computer program and the like therein or thereon. The internal memory can provide an environment for running of the operating system and the computer program in the non-volatile storage medium. The network interface and the communication interface of the computer device can be used to connect and communicate with external devices through a network. The computer program is executed by the processor to perform the steps of the method of the application.

[0088] The present application can be implemented as a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, causes the steps of the method of an embodiment of the present application to be performed. In one embodiment, the computer program is distributed over a network of network-coupled computer devices or processors such that the computer program is stored, accessed and executed by one or more computer devices or processors in a distributed manner. A single method step / operation, or two or more method steps / operations, can be performed by a single computer device or processor or by two or more computer devices or processors. One or more method steps / operations can be performed by one or more computer devices or processors and one or more other method steps / operations can be performed by one or more other computer devices or processors. One or more computer devices or processors can perform a single method step / operation, or perform two or more method steps / operations.

[0089] As will be appreciated by one of ordinary skill in the art, the method steps of the present application can be directed by a computer program to relevant hardware such as a computer device or processor, which computer program can be stored in a non-transitory computer-readable storage medium, which computer program, when executed, causes the steps of the present application to be performed. Any reference herein to a memory, storage, database or other medium can include non-volatile and / or volatile memory as the case can be. Examples of non-volatile memory include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, magnetic tape, floppy disk, magneto-optical data storage device, optical data storage device, hard disk, solid-state disk, and so on. Examples of volatile memory include random access memory (RAM), external cache memory, and so on.

[0090] The various technical features described above can be combined in any manner. Although not all possible combinations thereof are described, any combination of the technical features should be considered to be covered by the present specification, as long as such a combination does not result in a contradiction.

[0091] Finally, it should be noted that the above-described embodiments are merely intended to illustrate the technical solutions of the present application, and are not intended to limit the present application; even though the present application has been described in detail with reference to the above-described embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the above-described embodiments, or make equivalent replacements to some or all of the technical features; and such modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An analysis method for cold start temperature verification of suspected faults, characterized in that, Applied to a vehicle, comprising: When the judgment result of the cold start temperature test of the vehicle is suspected fault, the vehicle speed and / or the rotating speed of the air compressor of the vehicle are acquired in real time; During the waiting time corresponding to the vehicle speed and / or the rotating speed of the air compressor of the vehicle, the difference between the ambient temperature at the current time and the ambient temperature at the cold start time is calculated in real time, and the difference between the intake air temperature at the current time and the intake air temperature at the cold start time is calculated in real time; When the ambient temperature difference is greater than the ambient temperature threshold and / or the intake air temperature difference is greater than the intake air temperature threshold, the suspected fault is set as invalid.

2. The cold-start temperature verification of suspected fault analysis method of claim 1, wherein, The waiting time corresponding to the vehicle speed and / or the rotating speed of the air compressor of the vehicle comprises: The ambient temperature is obtained by an ambient temperature sensor at the position of the vehicle head of the vehicle, and the intake air temperature is obtained by an air filter temperature sensor at the position of the air filter of the vehicle; In a preset vehicle speed-rotating speed-step length analysis model, according to the vehicle speed and / or the rotating speed of the air compressor of the vehicle, the step length corresponding to the vehicle speed and / or the rotating speed of the air compressor of the vehicle is analyzed; According to the preset step length threshold and the step length, the waiting time corresponding to the vehicle speed and / or the rotating speed of the air compressor of the vehicle is calculated.

3. The cold-start temperature verification of suspected fault analysis method of claim 1, wherein, The ambient temperature threshold and the intake air temperature threshold comprise: In the case of the temperature at the cold start time, the ambient temperature difference and the intake air temperature difference after running the waiting time are acquired; A preset ambient temperature coefficient is multiplied by the ambient temperature difference to obtain an ambient temperature threshold, wherein the preset ambient temperature coefficient is a positive number; A preset intake air temperature coefficient is multiplied by the intake air temperature difference to obtain an intake air temperature threshold, and the preset intake air temperature coefficient is less than the preset ambient temperature coefficient, wherein the preset intake air temperature coefficient is a positive number.

4. The cold-start temperature verification method of analyzing suspected faults of claim 3, wherein, The ambient temperature threshold and the intake air temperature threshold further comprise: When the ambient temperature difference and the intake air temperature difference are negative numbers, the ambient temperature threshold and the intake air temperature threshold are corrected using a low-temperature correction coefficient, and the low-temperature correction coefficient is a coefficient greater than 1; When the ambient temperature difference and the intake air temperature difference are positive numbers, the ambient temperature threshold and the intake air temperature threshold are corrected using a high-temperature correction coefficient, and the high-temperature correction coefficient is a coefficient less than 1.

5. The cold-start temperature verification of suspected fault analysis method of claim 1, wherein, Further comprising: At any time during the waiting time, when the ambient temperature difference is greater than the ambient temperature threshold and / or the intake air temperature difference is greater than the intake air temperature threshold, the real-time calculation is stopped and the suspected fault is set as invalid.

6. The cold-start temperature verification of suspected fault analysis method of claim 2, wherein, The preset vehicle speed-rotating speed-step length analysis model comprises: A preset artificial intelligence model is trained according to the measured data to obtain the preset vehicle speed-rotating speed-step length analysis model having the corresponding relationship between the vehicle speed and / or the rotating speed of the air compressor of the vehicle and the step length, wherein the vehicle speed and the step length are in a positive proportional relationship, and the rotating speed of the air compressor and the step length are in a positive proportional relationship.

7. An analysis device for cold start temperature verification of suspected faults, characterized in that Applied to a vehicle, comprising: An acquisition module is configured to acquire a vehicle speed and / or a rotating speed of an air compressor of the vehicle in real time when a result of a cold start temperature test of the vehicle is suspected to be faulty; A calculation module is configured to calculate a difference between an ambient temperature at a current time and an ambient temperature at a cold start time, and calculate a difference between an intake temperature at the current time and an intake temperature at the cold start time in real time during a waiting time corresponding to the vehicle speed and / or the rotating speed of the air compressor; A setting module is configured to set the suspected fault as invalid when the difference between the ambient temperatures is greater than an ambient temperature threshold and / or the difference between the intake temperatures is greater than an intake temperature threshold.

8. The cold start temperature verification fault suspecting analysis apparatus of claim 7, wherein: The acquisition module, the calculation module and the setting module are controlled to execute the analysis method for the suspected fault of the cold start temperature test according to any one of claims 1-6.

9. An electronic device, comprising: The electronic device comprises: a communication interface, a processor and a memory; The memory is configured to store program instructions, and the program instructions, when executed by the processor in communication connection with the memory through the communication interface, cause the electronic device to implement the analysis method for the suspected fault of the cold start temperature test according to any one of claims 1-6.

10. A computer-readable storage medium having stored thereon program instructions, wherein, The program instructions, when executed by the computer, cause the computer to implement the analysis method for the suspected fault of the cold start temperature test according to any one of claims 1-6.

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