Oil tank oil leakage detection method, device and equipment, storage medium and vehicle

Abstract

The invention relates to an oil tank oil leakage detection method, device and equipment, a storage medium and a vehicle. The method comprises the following steps: determining a stable fuel resistance value; wherein the stable fuel resistance value is the resistance value of fuel in the target fuel tank in the stable running process of the target vehicle; and determining whether the target oil tank leaks oil or not according to the change of the stable fuel resistance value. According to the embodiment of the invention, the fuel resistance value in the stable running of the vehicle is determined, whether the fuel tank of the vehicle leaks fuel or not is judged based on the fuel resistance value, the measurement of the fuel resistance value is not limited by the working condition of a vehicle engine, an additional arrangement of a fuel tank electronic pump with relatively high cost is avoided, and the cost is reduced. And the hardware cost consumed by oil leakage judgment is reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle technology, and in particular to a method, device, equipment, storage medium and vehicle for detecting oil tank leakage. Background Art

[0002] The fuel tank is a container for fuel in a vehicle, and leakage from the fuel tank will have a great impact on vehicle safety. Therefore, it is necessary to determine whether the fuel tank is leaking in a timely manner.

[0003] In the related art, in order to detect whether the fuel tank is leaking, the fuel tank can be vacuumed or pressurized, and the change in the fuel tank pressure over a period of time can be used to determine whether the fuel tank is leaking. However, this method is limited by the working conditions of the engine, and the cost of setting up an additional fuel tank electronic pump is high. Summary of the invention

[0004] In order to solve the above technical problems, the present disclosure provides a fuel tank oil leakage detection method, device, equipment, storage medium and vehicle.

[0005] In a first aspect, the present disclosure provides a method for detecting oil leakage in an oil tank, the method comprising:

[0006] Determine a steady fuel resistance value; wherein the steady fuel resistance value is the resistance value of the fuel in the target fuel tank during the steady driving of the target vehicle;

[0007] Whether the target fuel tank is leaking is determined according to the change in the steady fuel resistance value.

[0008] In a second aspect, the present disclosure provides a fuel tank oil leakage detection device, the device comprising:

[0009] A first determination module is used to determine a stable fuel resistance value; wherein the stable fuel resistance value is the resistance value of the fuel in the target fuel tank during the stable driving of the target vehicle;

[0010] The second determination module is used to determine whether the target fuel tank is leaking according to the change of the stable fuel resistance value.

[0011] In a third aspect, an embodiment of the present disclosure further provides an electronic device, including:

[0012] processor;

[0013] A memory for storing executable instructions;

[0014] The processor is used to read executable instructions from the memory and execute the executable instructions to implement the oil tank leakage detection method of the first aspect.

[0015] In a fourth aspect, an embodiment of the present disclosure further provides a computer-readable storage medium, wherein the storage medium stores a computer program. When the computer program is executed by a processor, the processor implements the oil tank leakage detection method of the first aspect.

[0016] In a fifth aspect, an embodiment of the present disclosure further provides a vehicle, comprising at least one of the following: the above-mentioned fuel tank oil leakage detection device; the above-mentioned electronic device; and the above-mentioned computer-readable storage medium.

[0017] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages: a method, device, equipment and storage medium for detecting oil tank leakage in the embodiments of the present disclosure determines the steady fuel resistance value; wherein the steady fuel resistance value is the resistance value of the fuel in the target tank during the steady driving of the target vehicle; and whether the target tank is leaking is determined based on the change in the steady fuel resistance value. By adopting the above technical solution, the fuel resistance value during the steady driving of the vehicle is determined, and whether the vehicle's oil tank is leaking is determined based on the fuel resistance value. The measurement of the fuel resistance value is not limited to the working conditions of the vehicle engine, and avoids the additional cost of setting up a high-cost fuel tank electronic pump, thereby reducing the hardware cost consumed in oil leakage judgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 A schematic diagram of a flow chart of a method for detecting oil tank leakage provided by an embodiment of the present disclosure;

[0021] Figure 2 A schematic flow chart of another fuel tank oil leakage detection method provided by an embodiment of the present disclosure;

[0022] Figure 3 A schematic diagram of a flow chart for determining an oil leakage judgment value provided by an embodiment of the present disclosure;

[0023] Figure 4 A schematic diagram of the structure of a fuel tank oil leakage detection device provided in an embodiment of the present disclosure;

[0024] Figure 5 A schematic diagram of the hardware circuit structure of a fuel tank oil leakage detection device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0025] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0027] The fuel tank is a container for fuel in a vehicle, and leakage from the fuel tank will have a great impact on vehicle safety. Therefore, it is necessary to determine whether the fuel tank is leaking in a timely manner.

[0028] In the related art, in order to detect whether the fuel tank is leaking, it is necessary to use an electronic pump to evacuate or pressurize the fuel tank when the engine is running, and determine whether the fuel tank is leaking by the change in the fuel tank pressure over a period of time. However, this method is limited by the working conditions of the engine, and the cost of setting up an additional fuel tank electronic pump is high.

[0029] In order to solve the above problems, the embodiments of the present disclosure provide a fuel tank oil leakage detection method, device, equipment, storage medium and vehicle.

[0030] Figure 1 The present invention provides a flow chart of a method for detecting a fuel tank leakage, which can be performed by a fuel tank leakage detection device, wherein the device can be implemented by software and / or hardware, and can generally be integrated in an electronic device, and the fuel tank leakage detection device and / or the electronic device can be configured in a first vehicle. Figure 1 As shown, the method includes:

[0031] Step 101, determining a steady fuel resistance value; wherein the steady fuel resistance value is the resistance value of the fuel in the target fuel tank during the steady driving of the target vehicle.

[0032] Among them, the fuel resistance value may be the resistance value of the fuel in the target fuel tank of the target vehicle, and the fuel resistance value is related to the volume of the remaining fuel in the fuel tank, etc. In addition, during the driving of the vehicle, the driving state of the vehicle (for example, inclined driving, acceleration, deceleration, etc.) will also affect the fuel resistance value. The stable fuel resistance value may be the fuel resistance value measured when the target vehicle meets the stable driving condition. The stable driving condition may be a condition that characterizes the stable driving of the target vehicle. This embodiment does not limit the stable driving condition. For example, the stable driving condition may include: the acceleration information of the target vehicle is within a preset acceleration range.

[0033] In the disclosed embodiment, the fuel tank leakage detection device can monitor the driving state of the target vehicle. If the target vehicle is in a stable driving state, the measured fuel resistance value is determined as the stable fuel resistance value.

[0034] In some embodiments of the present disclosure, determining a stable fuel resistance value includes:

[0035] The fuel in the target fuel tank is tested for resistance to obtain initial fuel resistance values, and acceleration information of the target vehicle corresponding to each initial fuel resistance value is determined; among the initial fuel resistance values, the initial fuel resistance value corresponding to the acceleration information that meets the preset acceleration condition is determined as the stable fuel resistance value.

[0036] Among them, the initial fuel resistance value may be a fuel resistance value that is directly detected without data processing such as screening. This embodiment does not limit the detection interval of the initial fuel resistance value. For example, the detection interval of the initial fuel resistance value may be 0.1 seconds. The acceleration information may be information recording the driving acceleration of the target vehicle. The acceleration information may include lateral acceleration information and / or longitudinal acceleration information. The preset acceleration condition may be a pre-set condition that characterizes that the target vehicle is in a stable driving state. This embodiment does not limit the preset acceleration condition. For example, the preset acceleration condition may be that the lateral acceleration information is within the lateral acceleration interval, and the longitudinal acceleration information is within the longitudinal acceleration interval. The lateral acceleration interval and the longitudinal acceleration interval may be set according to user needs, etc., and this embodiment does not limit them. For example, the lateral acceleration interval and the longitudinal acceleration interval may both be 0 to 0.05 meters per second squared.

[0037] In this embodiment, while the resistance of the target fuel tank is detected to obtain the initial fuel resistance, the acceleration of the target vehicle is detected to obtain the lateral acceleration information and longitudinal acceleration information corresponding to each initial fuel resistance. The initial fuel resistance value with the lateral acceleration information in the lateral acceleration interval and the longitudinal acceleration in the longitudinal acceleration interval is determined as the stable fuel resistance value.

[0038] In the above scheme, the initial fuel resistance value is screened based on the acceleration information to obtain the stable fuel resistance value under the stable driving state of the target vehicle, thereby avoiding the influence of the vehicle driving state on the fuel resistance value, and further avoiding the influence of the vehicle driving state on the fuel resistance value for judging whether the fuel tank is leaking, thereby reducing the possibility of misjudging the fuel tank as leaking.

[0039] Step 102, determining whether the target fuel tank is leaking according to the change of the steady fuel resistance value.

[0040] In the disclosed embodiment, when the target vehicle is in a stable driving state, the fluctuation of the fuel in the target fuel tank is small. In this case, the stable fuel resistance value can more accurately characterize the volume of the fuel in the target fuel tank. Therefore, according to the change of the stable fuel resistance value, the change of the volume of the fuel in the target fuel tank can be determined. Moreover, according to whether the stable fuel resistance value has a sudden change, it can be determined whether the volume of the fuel in the target tank has a sudden change, and then when it is determined that the volume of the fuel in the target tank has a sudden change, it is determined that the target tank is leaking.

[0041] The fuel tank leakage detection method provided by the embodiment of the present disclosure determines the steady fuel resistance value; wherein the steady fuel resistance value is the resistance value of the fuel in the target fuel tank during the steady driving of the target vehicle; and determines whether the target fuel tank is leaking according to the change of the steady fuel resistance value. The embodiment of the present disclosure determines the fuel resistance value when the vehicle is running steadily, and judges whether the vehicle's fuel tank is leaking based on the fuel resistance value. The measurement of the fuel resistance value is not limited to the working condition of the vehicle engine, and avoids the additional cost of setting up a fuel tank electronic pump, which reduces the hardware cost consumed for oil leakage judgment.

[0042] In addition, the stable fuel resistance value is collected during the stable driving of the target vehicle, and whether the target fuel tank is leaking is determined based on the stable fuel resistance value, thereby reducing the influence of the vehicle driving state of the target vehicle on the judgment of whether the target vehicle is leaking.

[0043] In some embodiments of the present disclosure, determining whether a target fuel tank is leaking fuel according to the change of the steady fuel resistance value includes:

[0044] A first preset number of smooth fuel resistance values ​​that are adjacent in time sequence are divided into fuel resistance value groups; wherein the number of smooth fuel resistance values ​​between the fuel resistance value groups that are adjacent in time sequence is a second preset number; and based on the smooth fuel resistance values ​​included in each fuel resistance value group, an oil leakage judgment value of the fuel resistance value group is calculated.

[0045] Figure 2 A flow chart of another fuel tank oil leakage detection method provided by the embodiment of the present disclosure is as follows: Figure 2 As shown, the fuel tank oil leakage detection method includes:

[0046] Step 201, determining a steady fuel resistance value; wherein the steady fuel resistance value is the resistance value of the fuel in the target fuel tank during the steady driving of the target vehicle.

[0047] Step 202, dividing a first preset number of time-sequentially adjacent stable fuel resistance values ​​into fuel resistance value groups; wherein the number of time-sequentially adjacent stable fuel resistance values ​​between the fuel resistance value groups is a second preset number.

[0048] The first preset number may be the number of stable fuel resistance values ​​in the fuel resistance value group, and the first preset number may be a fixed number set according to user needs, for example, the first preset number may be 600. Alternatively, the first preset number may be the number of stable fuel resistance values ​​within a preset time length, for example, the first preset number may be the number of stable fuel resistance values ​​within 60 seconds before the current moment. The fuel resistance value group may be a group including multiple stable fuel resistance values. There may be a common stable fuel resistance value between the fuel resistance value groups adjacent in time sequence, that is, a stable fuel resistance value may exist in two fuel resistance value groups adjacent in time sequence at the same time.

[0049] The second preset number can be understood as the number of stable fuel resistance values ​​between the first stable fuel resistance values ​​of the fuel resistance value groups that are adjacent in time sequence. The second preset number can be a preset number, and the second preset number is not limited in this embodiment. For example, the second preset number can be 1 or 600, etc. It can be understood that if the second preset number is the same as the first preset number, there is no common stable fuel resistance value between the fuel resistance value groups that are adjacent in time sequence.

[0050] In this embodiment, the fuel tank leakage detection device sorts the stable fuel resistance values ​​in time sequence to obtain a fuel resistance value sequence, and samples the fuel resistance value sequence with a first preset number of sampling windows. The number of stable fuel resistance values ​​separated by each sampling is a second preset number, and the corresponding fuel resistance value group is determined according to the stable fuel resistance value obtained in each sampling.

[0051] Step 203, calculating the oil leakage judgment value of the fuel resistance value group according to the stable fuel resistance value included in each fuel resistance value group.

[0052] The oil leakage judgment value may be a value for judging whether the target fuel tank is leaking oil. The oil leakage judgment value may be a value determined by mathematical calculation based on the stable fuel resistance value in the fuel resistance value group. This embodiment does not limit the calculation method of the oil leakage judgment value. For example, the calculation method may include a median, an average value, etc.

[0053] In this embodiment, for each fuel resistance value group, all and / or part of the stable fuel resistance values ​​included in the fuel resistance value group are calculated to obtain the oil leakage judgment value corresponding to the fuel resistance value group.

[0054] In the above scheme, the calculation of the oil leakage judgment value based on the fuel resistance value group is performed as a basic unit, which can further filter out the fluctuation of the fuel resistance value caused by the flow of fuel in the fuel tank with the movement of the vehicle, thereby improving the accuracy of the fuel leakage judgment.

[0055] Figure 3 A schematic diagram of a flow chart for determining an oil leakage judgment value provided by an embodiment of the present disclosure, such as Figure 3As shown, in some embodiments of the present disclosure, according to the stable fuel resistance value included in each fuel resistance value group, the fuel leakage judgment value of the fuel resistance value group is calculated, including:

[0056] Step 301, for each fuel resistance value group, calculate a first statistical fuel resistance value according to the stable fuel resistance values ​​in the fuel resistance value group, and calculate a second statistical fuel resistance value according to the last third preset number of stable fuel resistance values ​​in the fuel resistance value group.

[0057] Among them, the first statistical fuel resistance value may be a statistical value determined based on all stable fuel resistance values ​​in the fuel resistance value group. The first statistical fuel resistance value may be a value that characterizes the overall situation of stable fuel resistance values ​​in the fuel resistance value group. The first statistical fuel resistance value may be an average value or a median value, etc. The second statistical fuel resistance value may be a statistical value determined based on the latest part of the stable fuel resistance values ​​in the fuel resistance value group. The second statistical fuel resistance value may be a value that characterizes the situation of the latest part of the stable fuel resistance values ​​in the fuel resistance value group. The second statistical fuel resistance value may be an average value, a median value, etc. The third preset number may be set according to user needs, etc., and is not limited in this embodiment. For example, the third preset number may be 40.

[0058] In this embodiment, for each fuel resistance value group, a first statistical fuel resistance value is calculated based on all stable fuel resistance values ​​in the fuel resistance value group. In addition, a second statistical fuel resistance value is calculated based on the stable fuel resistance values ​​of the third preset number with the latest time sequence in the fuel resistance value group. For example, if the first preset number can be the number of stable fuel resistance values ​​within 60 seconds before the current moment, and the third preset number is 40. Then the first statistical fuel resistance value can be the average value of the stable fuel resistance values ​​within 60 seconds before the current moment, and the second statistical fuel resistance value can be the median of the 40 stable fuel resistance values ​​with the latest time sequence in the fuel resistance value group.

[0059] Step 302, calculating the oil leakage judgment value according to the first statistical fuel resistance value and the second statistical fuel resistance value.

[0060] In this embodiment, after the first statistical fuel resistance value and the second statistical fuel resistance value are determined, the maximum value of the first statistical fuel resistance value and the second statistical fuel resistance value is determined as the oil leakage judgment value.

[0061] Optionally, in some embodiments, if the total number of stable fuel resistance values ​​does not reach a first preset number, the oil leakage judgment value may be set to a preset fuel resistance value. For example, if the electronic control unit (ECU) of the target vehicle measures the stable fuel resistance value after being powered on, and the first preset number is the number of stable fuel resistance values ​​within 60 seconds before the current moment, then within the first 60 seconds of the electronic control unit being powered on, the oil leakage judgment value may be the preset fuel resistance value.

[0062] In the above scheme, for each fuel resistance value group, a first statistical fuel resistance value representing the overall stable fuel resistance value in the fuel resistance value group and a second statistical fuel resistance value representing the stable fuel resistance value with a newer time series in the fuel resistance value group are calculated, and an oil leakage judgment value is determined based on the first statistical fuel resistance value and the second statistical fuel resistance value. The oil leakage judgment value is determined from multiple dimensions such as the overall and the newer time series, which can more comprehensively represent the fuel situation in the fuel tank and improve the accuracy of subsequent judgment of whether there is an oil leakage.

[0063] Step 204, determining whether the target oil tank is leaking oil based on the change in the oil leakage judgment value.

[0064] In some embodiments of the present disclosure, determining whether a target oil tank is leaking oil according to a change in the oil leakage judgment value includes:

[0065] When preset preconditions are met, it is determined whether the target fuel tank is leaking based on the change in the oil leakage judgment value; wherein the preset preconditions include: the resistance sensor of the target fuel tank is in a normal state, the stable fuel resistance is within a preset fuel range, and the target vehicle meets the resistance initialization conditions.

[0066] Among them, the preset precondition can be a precondition for determining whether the fuel tank is leaking. The preset precondition can be set according to user needs, etc., and this embodiment does not impose any restrictions. The resistance sensor can be a liquid level sensor for detecting the fuel resistance in the target fuel tank. The resistance value obtained by the resistance sensor can be the initial fuel resistance value. This embodiment does not impose any restrictions on the sensor type of the resistance sensor. The preset fuel interval can be a preset interval that characterizes the normal fuel resistance detection result. The preset fuel interval can be set according to the model of the target vehicle, etc., and this embodiment does not impose any restrictions. For example, the preset fuel interval can be 30 ohms to 330 ohms. The resistance initialization condition can be a condition for initializing the measurement of the initial fuel resistance value.

[0067] In this embodiment, if the resistance sensor of the target fuel tank is in a normal state, it means that the numerical credibility of the initial fuel resistance value measured by the resistance sensor is high. If the stable fuel resistance value is within the preset fuel range, it means that the credibility of the stable fuel resistance value is high. If the target vehicle meets the resistance initialization condition, it means that the initial fuel resistance value of a new cycle can be measured and counted independently of the previous initial fuel resistance value.

[0068] If the resistance sensor of the target fuel tank is in a normal state, the steady fuel resistance is within the preset fuel range, and the target vehicle meets the resistance initialization condition, it is determined that the target vehicle meets the preset precondition. Then, according to the change of the oil leakage judgment value, it is determined whether the target fuel tank is leaking.

[0069] In the above scheme, it is determined by presetting the preconditions whether the oil tank is leaking oil at present, thereby reducing the possibility of false alarm or missed alarm of oil tank leakage.

[0070] In some embodiments of the present disclosure, the resistance initialization condition includes one or more of the following: the vehicle controller of the target vehicle is updated to the awake state; within the preset statistical time, the cumulative time that the target vehicle meets the preset acceleration condition is less than the cumulative time threshold; the resistance sensor is restored from the abnormal state to the normal state; the acceleration information of the target vehicle is restored to the valid state; the acceleration sensor of the target vehicle is restored from the abnormal state to the normal state.

[0071] Among them, the vehicle controller is also called XCU. The preset statistical duration can be a preset statistical duration for whether the acceleration information meets the acceleration condition. This embodiment does not limit the preset statistical duration. For example, the preset statistical duration can be 300 seconds. The cumulative duration can be the total duration that the acceleration information meets the acceleration condition within the preset statistical duration. The cumulative duration threshold can be a preset judgment threshold for the cumulative duration. The cumulative duration threshold can be set according to user needs, etc. This embodiment does not limit it. For example, the cumulative duration threshold can be 4 seconds.

[0072] In this embodiment, if the whole vehicle controller of the target vehicle is updated to the awake state, it means that the whole controller starts to work. If within the preset statistical time, the cumulative time that the target vehicle meets the preset acceleration condition is less than the cumulative time threshold, it means that the acceleration of the target vehicle is large and the target vehicle is running smoothly for a short time. Therefore, within the preset statistical time, the reliability of the statistical fuel resistance value is low, so the fuel resistance value can be measured and counted in a new cycle. If the resistance sensor recovers from an abnormal state to a normal state, it means that the initial fuel resistance value previously measured by the resistance sensor is abnormal. If the acceleration information of the target vehicle is restored to a valid state and / or the acceleration sensor of the target vehicle is restored from an abnormal state to a normal state, it means that the acceleration information previously determined is invalid. Among them, the acceleration sensor of the target vehicle may include a lateral acceleration sensor and / or a longitudinal acceleration sensor.

[0073] In this embodiment, if the target vehicle satisfies at least one of the above-mentioned resistance initialization conditions, it means that the steady fuel resistance value has not been measured before, or the accuracy of the steady fuel resistance value measurement previously performed is low. Therefore, the previously measured steady fuel resistance value can be removed, and the steady fuel resistance value measurement and statistics of a new cycle can be performed again.

[0074] In the above scheme, by setting the initialization condition, the influence of the relatively low-accuracy stable fuel resistance value on the judgment of whether the fuel tank is leaking is avoided.

[0075] In the disclosed embodiment, there are many methods for determining whether the target oil tank is leaking according to the change of the oil leakage judgment value, which are not limited in this embodiment. Examples are as follows:

[0076] In an optional implementation manner, determining whether the target oil tank is leaking oil according to the change of the oil leakage judgment value includes:

[0077] When the increment of the oil leakage judgment value is greater than the first incremental resistance value, if the duration for which the increment of the oil leakage judgment value is less than the second incremental resistance value is less than the first duration threshold, it is determined that the target oil tank has an oil leak; wherein the first incremental resistance value is greater than the second incremental resistance value.

[0078] The increment of the oil leakage judgment value may be the amount of change in the oil leakage judgment value, and the increment of the oil leakage judgment value may be the amount of change in the oil leakage judgment value within a preset time length. The increment calculation basis of the increment of the oil leakage judgment value may be the first oil leakage judgment value within the preset time length. Alternatively, the increment of the oil leakage judgment value may be the amount of change between the oil leakage judgment value at the current moment and the initial oil leakage judgment value, that is, the increment calculation basis of the increment of the oil leakage judgment value may be the initial oil leakage judgment value. The initial oil leakage judgment value may be the oil leakage judgment value determined when the oil leakage flag changes, or the refueling flag changes, or the engine of the target vehicle is updated from a running state to a shutdown state.

[0079] The first incremental resistance value may be an increment of a pre-set oil leakage judgment value for triggering the judgment of whether oil leakage actually occurs in the oil tank. The first incremental resistance value may be set according to user requirements, the working condition of the target vehicle, etc., and is not limited in this embodiment. For example, the first incremental resistance value may be 30 ohms, or, when the engine of the target vehicle is running, the first incremental resistance value may be 50 ohms. The second incremental resistance value may be an increment of a pre-set oil leakage judgment value for judging whether oil leakage actually occurs in the oil tank. The second incremental resistance value may be set according to user requirements, the working condition of the target vehicle, etc., and is not limited in this embodiment. For example, the second incremental resistance value may be 20 ohms, or, when the engine of the target vehicle is running, the first incremental resistance value may be 40 ohms.

[0080] In this embodiment, the increment of the oil leakage judgment value is counted in real time. When the increment of the oil leakage judgment value is greater than the first incremental resistance value, it indicates that the fuel tank of the target vehicle may be leaking. In order to avoid misjudgment of oil tank leakage due to factors such as vehicle bumps, after determining that the increment of the oil leakage judgment value is greater than the first incremental resistance value, continue to determine whether the duration for which the increment of the oil leakage judgment value is continuously less than the second incremental resistance value within the first preset detection duration is less than the first duration threshold. If so, it indicates that the fuel in the target tank has indeed decreased, and it is determined that the target tank is leaking. Among them, the preset detection duration can be adjusted according to user needs, etc., and this embodiment does not limit it. For example, the first preset detection duration can be 10 seconds.

[0081] For example, if the oil leakage judgment value increases by at least 30 ohms within 60 seconds, and the increase in the oil leakage judgment value is less than 20 ohms for less than 5 seconds within 10 seconds after increasing to 30 ohms, it is determined that the target oil tank is leaking.

[0082] When the range extender (i.e., the engine) of the target vehicle is not running, if the oil leakage judgment value increases by at least 50 ohms based on the initial oil leakage judgment value, and the increase in the oil leakage judgment value is less than 40 ohms for less than 5 seconds within 90 seconds after increasing to 50 ohms, it is determined that the target fuel tank has an oil leak.

[0083] In another optional implementation, determining whether the target oil tank is leaking oil according to the change of the oil leakage judgment value includes:

[0084] If the oil leakage judgment value changes from less than the preset fuel resistance value to greater than the preset empty tank resistance value, and the duration of being greater than the preset empty tank resistance value is greater than the second duration threshold, it is determined that the target fuel tank is leaking.

[0085] The preset fuel resistance value may be a preset resistance value indicating that there is some fuel in the fuel tank. This embodiment does not limit the preset fuel resistance value. For example, the preset fuel resistance value may be 315 ohms. The preset empty tank resistance value may be the resistance value of the fuel in the target fuel tank when the fuel tank is empty. The preset empty tank resistance value may be set according to the model of the target vehicle, etc. This embodiment does not limit it. For example, the preset empty tank resistance value may be 330 ohms. This embodiment does not limit the second duration threshold. For example, the second duration threshold may be 90 seconds.

[0086] In this embodiment, it is determined whether the oil leakage judgment value changes from less than the fuel resistance value to greater than the preset empty tank resistance value within the second preset detection time. If so, it indicates that the fuel in the target fuel tank may change from the presence of fuel to empty quickly. In order to further determine whether the target fuel tank has oil leakage, it is further determined whether the duration of the oil leakage judgment value being greater than the preset empty tank resistance value is greater than the second time threshold. If so, it indicates that the target fuel tank has oil leakage.

[0087] For example, when the range extender of the target vehicle is not running, if the oil leakage judgment value increases from less than 315 ohms to more than 330 ohms, and the fuel judgment value is greater than 330 ohms for 90 seconds, it is determined that the target fuel tank is leaking.

[0088] In the above scheme, when the oil leakage judgment value undergoes a sudden change and remains around the value after the sudden change, it is determined that the target oil tank has an oil leakage, thereby reducing the possibility of misjudgment of the oil leakage.

[0089] In some embodiments of the present disclosure, the fuel tank oil leakage detection method further includes:

[0090] When it is determined that the target fuel tank is leaking, if the target vehicle meets the preset oil leakage reset condition, the oil leakage flag of the target fuel tank is reset to a no-leakage flag.

[0091] The preset oil leakage reset condition may be a condition for re-determining whether the target oil tank is leaking. This embodiment does not limit the preset oil leakage reset condition. The oil leakage flag may be a variable for recording whether the target oil tank is leaking. The no oil leakage flag may be a variable value indicating that the target oil tank is not leaking.

[0092] In this embodiment, when it is determined that the target fuel tank is leaking, the fuel tank leakage detection device can assign the target fuel tank's oil leakage flag to an oil leakage flag, and reset the oil leakage flag to a non-leakage flag when the target vehicle meets the oil leakage reset condition.

[0093] In some embodiments of the present disclosure, the preset oil leakage reset condition includes at least one of the following: the target vehicle does not meet the preset precondition; the increment of the oil leakage judgment value separated by a preset time interval is less than the third incremental resistance value; the refueling mark position of the target vehicle is the refueling mark.

[0094] Among them, there are multiple preset time intervals, which are not limited by this embodiment. For example, when the range extender of the target vehicle is running, the preset time interval can be 60 seconds; when the range extender of the target vehicle is not running, the preset time interval can be called 600 seconds. The third incremental resistance value can be the change in the oil leakage judgment value that characterizes the normal change in the fuel volume in the target fuel tank, that is, the third incremental resistance value can be the maximum incremental value of the oil leakage judgment value when there is no oil leakage in the target fuel tank. The third incremental resistance value can be related to the operating state of the range extender of the target vehicle. There are multiple third incremental resistance values, which are not limited by this embodiment. For example, the third incremental resistance value can be 10 ohms. The refueling flag can be a variable that records whether refueling has occurred in the target fuel tank. The refueling flag can be a variable value that characterizes that refueling has occurred in the target fuel tank.

[0095] In this embodiment, if the target vehicle does not meet the preset precondition, it means that the target vehicle does not meet the precondition for determining whether the target fuel tank is leaking, and thus the accuracy of the result of whether the target fuel tank is leaking is low. If the increment of the leakage judgment value separated by the preset time interval is less than the third incremental resistance value, it means that the volume change of the fuel in the target fuel tank is normal, and it is highly likely that the target fuel tank has not leaked. If the refueling mark of the target vehicle is the refueling mark, it means that the target fuel tank is refueled, and it is necessary to re-determine whether the target fuel tank has leaked.

[0096] For example, the preset oil leakage reset condition may include at least one of the following:

[0097] The target vehicle does not meet the preset preconditions; when the range extender is running, the increment of the oil leakage judgment value separated by the first preset time interval (for example, 60 seconds) is less than the third incremental resistance value (for example, 10 ohms); when the range extender is not running, the increment of the oil leakage judgment value separated by the second preset time interval (for example, 600 seconds) is less than the third incremental resistance value; the refueling flag is updated to the refueling flag. Among them, if any of the first three items above is met, the oil leakage flag will be kept as the oil leakage flag for the lag time (for example, 5 seconds), and then the oil leakage flag will be updated to the no oil leakage flag. If the last item is met, the oil leakage flag will be directly updated to the no oil leakage flag.

[0098] In the above scheme, the oil leakage flag is reset, and the target oil tank is re-detected for oil leakage.

[0099] The fuel tank leakage detection method provided by the embodiment of the present disclosure can detect fuel tank leakage without being limited by the working conditions of the engine, avoids the need for an additional electronic pump, and reduces hardware costs. By processing the initial fuel resistance value, the interference of the vehicle driving state of the target vehicle is reduced, the probability of false alarm of fuel leakage is reduced, and the accuracy of fuel leakage detection is improved.

[0100] Figure 4 A schematic structural diagram of an oil tank oil leakage detection device provided in an embodiment of the present disclosure is shown.

[0101] In some embodiments of the present disclosure, Figure 4 The fuel tank leakage detection device shown can be executed by an electronic device or a server. The electronic device can include but is not limited to a mobile terminal such as a vehicle-mounted terminal, and a fixed terminal such as a vehicle domain controller. The server can be a server cluster or a cloud server.

[0102] like Figure 4 As shown, the oil tank leakage detection device 400 may include: a first determination model 401 and a second determination module 402.

[0103] The first determination module 401 is used to determine a stable fuel resistance value; wherein the stable fuel resistance value is the resistance value of the fuel in the target fuel tank during the stable driving of the target vehicle;

[0104] The second determination module 402 is used to determine whether the target fuel tank is leaking according to the change of the stable fuel resistance value.

[0105] Optionally, the first determining module 401 is configured to:

[0106] Performing resistance detection on the fuel in the target fuel tank to obtain initial fuel resistance values, and determining acceleration information of the target vehicle corresponding to each initial fuel resistance value;

[0107] The initial fuel resistance value whose corresponding acceleration information satisfies a preset acceleration condition is determined as the stable fuel resistance value.

[0108] Optionally, the second determining module 402 includes:

[0109] A division submodule, for dividing the first preset number of the stable fuel resistance values ​​adjacent in time sequence into fuel resistance value groups; wherein the number of the stable fuel resistance values ​​between the fuel resistance value groups adjacent in time sequence is a second preset number;

[0110] A calculation submodule, configured to calculate the oil leakage judgment value of the fuel resistance value group according to the stable fuel resistance value included in each of the fuel resistance value groups;

[0111] The oil leakage determination submodule is used to determine whether the target oil tank has oil leakage according to the change of the oil leakage judgment value.

[0112] Optionally, the computing submodule is used to:

[0113] For each of the fuel resistance value groups, a first statistical fuel resistance value is calculated according to the stable fuel resistance values ​​in the fuel resistance value group, and a second statistical fuel resistance value is calculated according to the stable fuel resistance values ​​of the last third preset number in the fuel resistance value group;

[0114] The oil leakage judgment value is calculated according to the first statistical fuel resistance value and the second statistical fuel resistance value.

[0115] Optionally, the oil leakage determination submodule is used to:

[0116] Under the condition that the preset precondition is met, determining whether the target oil tank is leaking oil according to the change of the oil leakage judgment value;

[0117] The preset preconditions include: the resistance sensor of the target fuel tank is in a normal state, the stable fuel resistance is within a preset fuel range, and the target vehicle meets the resistance initialization condition.

[0118] Optionally, the resistance initialization condition includes one or more of the following:

[0119] The vehicle controller of the target vehicle is updated to a wake-up state;

[0120] Within the preset statistical time, the cumulative time that the target vehicle meets the preset acceleration condition is less than the cumulative time threshold;

[0121] The resistance sensor is restored from an abnormal state to a normal state;

[0122] The acceleration information of the target vehicle is restored to a valid state;

[0123] The acceleration sensor of the target vehicle is restored from an abnormal state to a normal state.

[0124] Optionally, determining whether the target oil tank is leaking oil according to the change of the oil leakage judgment value includes:

[0125] In the event that the increment of the oil leakage judgment value is greater than the first incremental resistance value, if the duration for which the increment of the oil leakage judgment value is less than the second incremental resistance value is less than the first duration threshold, it is determined that oil leakage has occurred in the target oil tank; wherein the first incremental resistance value is greater than the second incremental resistance value.

[0126] Optionally, determining whether the target oil tank is leaking oil according to the change of the oil leakage judgment value includes:

[0127] If the oil leakage judgment value changes from less than the preset fuel resistance value to greater than the preset empty tank resistance value, and the duration of being greater than the preset empty tank resistance value is greater than the second duration threshold, it is determined that the target fuel tank is leaking.

[0128] Optionally, the oil tank leakage detection device 400 further includes:

[0129] A reset module, configured to reset the oil leakage flag of the target oil tank to a non-leakage flag when it is determined that the target oil tank is leaking and if the target vehicle meets a preset oil leakage reset condition;

[0130] The preset oil leakage reset condition includes at least one of the following:

[0131] The target vehicle does not meet the preset precondition;

[0132] The increment of the oil leakage judgment value separated by a preset time interval is less than the third incremental resistance value;

[0133] The refueling mark position of the target vehicle is a refueling mark.

[0134] The oil tank leakage detection device provided in the embodiments of the present disclosure can execute the oil tank leakage detection method provided in any embodiment of the present disclosure, and has the corresponding functional modules and beneficial effects of the execution method.

[0135] Figure 5 A schematic diagram of the hardware circuit structure of an oil tank leakage detection device provided in an embodiment of the present disclosure is shown.

[0136] like Figure 5 As shown, the oil tank leakage detection device 500 may include a controller 501 and a memory 502 storing computer program instructions.

[0137] Specifically, the controller 501 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0138] The memory 502 may include a large capacity memory for information or instructions. By way of example and not limitation, the memory 502 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a tape, or a universal serial bus (USB) drive or a combination of two or more of these. Where appropriate, the memory 502 may include a removable or non-removable (or fixed) medium. Where appropriate, the memory 502 may be inside or outside the integrated gateway device. In a particular embodiment, the memory 502 is a non-volatile solid-state memory. In a particular embodiment, the memory 502 includes a read-only memory (ROM). Where appropriate, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (Electrically Erasable Programmable ROM, EEPROM), an electrically rewritable ROM (EAROM) or a flash memory, or a combination of two or more of these.

[0139] The controller 501 reads and executes the computer program instructions stored in the memory 502 to perform the steps of the oil tank leakage detection method provided in the embodiment of the present disclosure.

[0140] In one example, the oil tank leakage detection device 500 may further include a transceiver 503 and a bus 505. Figure 5 As shown, the controller 501, the memory 502 and the transceiver 503 are connected via a bus 504 and communicate with each other.

[0141] The bus 504 includes hardware, software, or both. For example, but not limitation, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Extended Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hyper Transport (HT) interconnect, an Industrial Standard Architecture (ISA) bus, an InfiniBand interconnect, a Low Pin Count (LPC) bus, a memory bus, a MicroChannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local Bus (VLB) bus, or other suitable buses or a combination of two or more of these. Where appropriate, the bus 504 may include one or more buses. Although embodiments of the present application describe and illustrate a particular bus, the present application contemplates any suitable bus or interconnect.

[0142] The following is an embodiment of a computer-readable storage medium provided in an embodiment of the present disclosure. The computer-readable storage medium and the oil tank leakage detection method of the above-mentioned embodiments belong to the same inventive concept. For details not described in detail in the embodiment of the computer-readable storage medium, reference can be made to the embodiment of the above-mentioned oil tank leakage detection method.

[0143] This embodiment provides a storage medium including computer executable instructions, which are used to execute a method for detecting oil tank leakage when executed by a computer processor.

[0144] Of course, the computer executable instructions of a storage medium containing computer executable instructions provided in an embodiment of the present disclosure are not limited to the above method operations, and can also execute related operations in the oil tank leakage detection method provided in any embodiment of the present disclosure.

[0145] Through the above description of the implementation methods, the technicians in the relevant field can clearly understand that the present disclosure can be implemented by means of software and necessary general hardware, and of course it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present disclosure can be essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory (FLASH), hard disk or optical disk, etc., including a number of instructions for a computer cloud platform (which can be a personal computer, a server, or a network cloud platform, etc.) to execute the oil tank leakage detection method provided by each embodiment of the present disclosure.

[0146] The embodiments of the present disclosure also provide a vehicle, comprising at least one of the following: the above-mentioned fuel tank oil leakage detection device; the above-mentioned electronic device; and the above-mentioned computer-readable storage medium.

[0147] Note that the above are only preferred embodiments of the present disclosure and the technical principles used. Those skilled in the art will understand that the present disclosure is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present disclosure. Therefore, although the present disclosure is described in more detail through the above embodiments, the present disclosure is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present disclosure, and the scope of the present disclosure is determined by the scope of the appended claims.

Claims

1. A method for detecting oil tank leakage, characterized in that: include: Determine a steady fuel resistance value; wherein the steady fuel resistance value is the resistance value of the fuel in the target fuel tank during the steady driving of the target vehicle; Whether the target fuel tank is leaking is determined according to the change in the steady fuel resistance value.

2. The method according to claim 1, characterized in that The step of determining the stable fuel resistance value includes: Performing resistance detection on the fuel in the target fuel tank to obtain initial fuel resistance values, and determining acceleration information of the target vehicle corresponding to each initial fuel resistance value; The initial fuel resistance value whose corresponding acceleration information satisfies a preset acceleration condition is determined as the stable fuel resistance value.

3. The method according to claim 1, characterized in that The step of determining whether the target fuel tank is leaking fuel according to the change of the stable fuel resistance value comprises: Divide the first preset number of stable fuel resistance values ​​adjacent in time sequence into a fuel resistance value group; wherein the number of the stable fuel resistance values ​​between the fuel resistance value groups adjacent in time sequence is a second preset number; Calculating the oil leakage judgment value of the fuel resistance value group according to the stable fuel resistance value included in each of the fuel resistance value groups; According to the change of the oil leakage judgment value, it is determined whether the target oil tank has oil leakage.

4. The method according to claim 3, characterized in that The step of calculating the oil leakage judgment value of the fuel resistance value group according to the stable fuel resistance value included in each fuel resistance value group includes: For each of the fuel resistance value groups, a first statistical fuel resistance value is calculated according to the stable fuel resistance values ​​in the fuel resistance value group, and a second statistical fuel resistance value is calculated according to the stable fuel resistance values ​​of the last third preset number in the fuel resistance value group; The oil leakage judgment value is calculated according to the first statistical fuel resistance value and the second statistical fuel resistance value.

5. The method according to claim 3, characterized in that: The step of determining whether the target oil tank is leaking oil according to the change of the oil leakage judgment value comprises: Under the condition that the preset precondition is met, determining whether the target oil tank is leaking oil according to the change of the oil leakage judgment value; The preset preconditions include: the resistance sensor of the target fuel tank is in a normal state, the stable fuel resistance is within a preset fuel range, and the target vehicle meets the resistance initialization condition.

6. The method according to claim 5, characterized in that The resistance initialization condition includes one or more of the following: The vehicle controller of the target vehicle is updated to a wake-up state; Within the preset statistical time, the cumulative time that the target vehicle meets the preset acceleration condition is less than the cumulative time threshold; The resistance sensor is restored from an abnormal state to a normal state; The acceleration information of the target vehicle is restored to a valid state; The acceleration sensor of the target vehicle is restored from an abnormal state to a normal state.

7. The method according to claim 3 or 5, characterized in that: The step of determining whether the target oil tank is leaking oil according to the change of the oil leakage judgment value comprises: In the event that the increment of the oil leakage judgment value is greater than the first incremental resistance value, if the duration for which the increment of the oil leakage judgment value is less than the second incremental resistance value is less than the first duration threshold, it is determined that oil leakage has occurred in the target oil tank; wherein the first incremental resistance value is greater than the second incremental resistance value.

8. The method according to claim 3 or 5, characterized in that: The step of determining whether the target oil tank is leaking oil according to the change of the oil leakage judgment value comprises: If the oil leakage judgment value changes from less than the preset fuel resistance value to greater than the preset empty tank resistance value, and the duration of being greater than the preset empty tank resistance value is greater than the second duration threshold, it is determined that the target fuel tank is leaking.

9. The method according to claim 3, characterized in that: The method further comprises: In the case where it is determined that the target fuel tank is leaking, if the target vehicle meets a preset oil leakage reset condition, the oil leakage flag of the target fuel tank is reset to a no-leakage flag; The preset oil leakage reset condition includes at least one of the following: The target vehicle does not meet the preset preconditions; The increment of the oil leakage judgment value separated by a preset time interval is less than the third incremental resistance value; The refueling mark position of the target vehicle is a refueling mark.

10. A fuel tank leakage detection device, characterized in that: include: A first determination module is used to determine a stable fuel resistance value; wherein the stable fuel resistance value is the resistance value of the fuel in the target fuel tank during the stable driving of the target vehicle; The second determination module is used to determine whether the target fuel tank is leaking according to the change of the stable fuel resistance value.

11. An electronic device, characterized in that: The electronic device comprises: Processor and memory; The processor is used to execute the steps of the method according to any one of claims 1 to 9 by calling the program or instruction stored in the memory.

12. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a program or instruction, and the program or instruction enables a computer to execute the steps of the method according to any one of claims 1 to 9.

13. A vehicle, characterized in that: Include at least one of the following: The fuel tank oil leakage detection device as described in claim 10 above; The electronic device as claimed in claim 11; The computer readable storage medium of claim 12.

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