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

Abstract

The present disclosure relates to an oil tank leakage detection method, device, equipment, storage medium and vehicle. The method comprises: determining a stable fuel resistance value; wherein the stable fuel resistance value is the resistance value of the fuel in the target oil tank during stable driving of the target vehicle; and determining whether the target oil tank leaks according to the change of the stable fuel resistance value. According to the embodiment of the present disclosure, the fuel resistance value during stable driving of the vehicle is determined, and whether the oil tank of the vehicle leaks is judged based on the fuel resistance value. The measurement of the fuel resistance value is not limited to the working condition of the engine of the vehicle, and the additional high-cost electronic pump of the oil tank is avoided, thereby reducing the hardware cost consumed for leakage judgment.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle technology, and in particular to a method, apparatus, equipment, storage medium, and vehicle for detecting fuel tank leaks. Background Technology

[0002] The fuel tank is the container in a vehicle that holds fuel, and a fuel leak can have a significant impact on vehicle safety. Therefore, it is necessary to promptly determine if the fuel tank is leaking.

[0003] In related technologies, to detect whether a fuel tank is leaking, the fuel tank can be evacuated or pressurized, and the change in fuel tank pressure over a period of time can be used to determine whether there is a leak. However, this method is limited by the engine's operating conditions, and the additional cost of installing an electronic fuel tank pump is relatively high. Summary of the Invention

[0004] To address the aforementioned technical problems, this disclosure provides a method, apparatus, equipment, storage medium, and vehicle for detecting oil leaks in fuel tanks.

[0005] In a first aspect, this disclosure provides a method for detecting oil leaks in a fuel tank, the method comprising:

[0006] Determine the 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;

[0007] Based on the change in the stable fuel resistance value, it is determined whether the target fuel tank is leaking.

[0008] Secondly, this disclosure provides an oil tank leakage detection device, which includes:

[0009] The first determining module is used to determine the 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 determining module is used to determine whether the target fuel tank is leaking based on the change in the stable fuel resistance value.

[0011] Thirdly, embodiments of this disclosure also provide an electronic device, including:

[0012] processor;

[0013] Memory, used to store executable instructions;

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

[0015] Fourthly, this disclosure also provides a computer-readable storage medium storing a computer program that, when executed by a processor, causes the processor to implement the oil tank leakage detection method of the first aspect described above.

[0016] Fifthly, embodiments of this disclosure also provide a vehicle, including at least one of the following: the aforementioned fuel tank leak detection device; the aforementioned electronic device; and the aforementioned computer-readable storage medium.

[0017] The technical solution provided in this disclosure has the following advantages compared with the prior art: This disclosure provides a fuel tank leakage detection method, apparatus, device, and storage medium 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; based on the change in the stable fuel resistance value, it is determined whether the target fuel tank is leaking. Using the above technical solution, the fuel resistance value during stable driving of the vehicle is determined, and based on this fuel resistance value, it is determined whether the vehicle's fuel tank is leaking. The measurement of this fuel resistance value is not limited by the operating conditions of the vehicle's engine, and it avoids the need for an additional, costly fuel tank electronic pump, reducing the hardware cost consumed in leak detection. Attached Figure Description

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

[0019] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic flowchart illustrating a method for detecting oil leaks in a fuel tank, provided in an embodiment of this disclosure;

[0021] Figure 2 A schematic flowchart illustrating another method for detecting oil leaks in a fuel tank provided in this embodiment of the present disclosure;

[0022] Figure 3 This is a schematic flowchart illustrating a method for determining an oil leak judgment value, provided in an embodiment of the present disclosure.

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

[0024] Figure 5 This is a schematic diagram of the hardware circuit structure of an oil tank leakage detection device provided in an embodiment of this disclosure. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0026] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0027] The fuel tank is the container in a vehicle that holds fuel, and a fuel leak can have a significant impact on vehicle safety. Therefore, it is necessary to promptly determine if the fuel tank is leaking.

[0028] In related technologies, to detect whether a fuel tank is leaking, it is necessary to use an electronic pump to evacuate or pressurize the fuel tank while the engine is running, and determine whether there is a leak by observing the change in fuel tank pressure over a period of time. However, this method is limited by the engine's operating conditions, and the additional cost of setting up an electronic fuel tank pump is relatively high.

[0029] To address the aforementioned issues, this disclosure provides a method, apparatus, equipment, storage medium, and vehicle for detecting fuel tank leaks.

[0030] Figure 1 This is a flowchart illustrating a fuel tank leak detection method provided in an embodiment of this disclosure. The method can be executed by a fuel tank leak detection device, which can be implemented using software and / or hardware, and is generally integrated into an electronic device. This fuel tank leak detection device and / or electronic device can be configured in a first vehicle. Figure 1 As shown, the method includes:

[0031] Step 101: Determine the 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 process of the target vehicle.

[0032] The fuel resistance value can be the resistance value of the fuel in the target vehicle's fuel tank, which is related to the volume of remaining fuel in the tank. Furthermore, the vehicle's driving state (e.g., tilting, acceleration, deceleration) also affects the fuel resistance value. The stable fuel resistance value can be the fuel resistance value measured when the target vehicle meets stable driving conditions. These stable driving conditions can be those characterizing the stable driving of the target vehicle. This embodiment does not limit these stable driving conditions; for example, they may include the target vehicle's acceleration information being within a preset acceleration range.

[0033] In this embodiment of the present disclosure, the fuel tank leakage detection device can monitor the driving status 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 this disclosure, determining a steady fuel resistance value includes:

[0035] The resistance of the fuel in the target fuel tank is detected to obtain the initial fuel resistance value, and the acceleration information of the target vehicle corresponding to each initial fuel resistance value is determined. The initial fuel resistance value whose corresponding acceleration information meets the preset acceleration conditions is determined as the stable fuel resistance value.

[0036] The initial fuel resistance value can be a directly detected, unprocessed fuel resistance value. This embodiment does not limit the detection interval of this initial fuel resistance value; for example, the detection interval can be 0.1 seconds. Acceleration information can be information recording the driving acceleration of the target vehicle, which may include lateral acceleration information and / or longitudinal acceleration information. The preset acceleration condition can be a pre-set condition representing a stable driving state for the target vehicle. This embodiment does not limit the preset acceleration condition; for example, the preset acceleration condition can be that the lateral acceleration information is within a lateral acceleration range, and the longitudinal acceleration information is within a longitudinal acceleration range. The lateral and longitudinal acceleration ranges can be set according to user needs, etc., and this embodiment does not limit them; for example, both the lateral and longitudinal acceleration ranges can be 0 to 0.05 meters per second squared.

[0037] In this embodiment, while detecting the resistance of the target fuel tank to obtain the initial fuel resistance value, the acceleration of the target vehicle is also detected to obtain the lateral acceleration information and longitudinal acceleration information corresponding to each initial fuel resistance value. The initial fuel resistance values ​​whose lateral acceleration information is within the lateral acceleration range and whose longitudinal acceleration information is within the longitudinal acceleration range are determined as stable fuel resistance values.

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

[0039] Step 102: Determine whether the target fuel tank is leaking based on the change in stable fuel resistance.

[0040] In this embodiment of the disclosure, when the target vehicle is driving smoothly, the fluctuation of fuel volume in the target fuel tank is small. Under these conditions, the stable fuel resistance value can accurately represent the volume of fuel in the target fuel tank. Therefore, based on the change in the stable fuel resistance value, the change in fuel volume in the target fuel tank can be determined. Furthermore, whether there is a sudden change in the stable fuel resistance value can determine whether there is a sudden change in the fuel volume in the target fuel tank. If a sudden change in the fuel volume is determined, then a fuel leak is identified in the target fuel tank.

[0041] The fuel tank leakage detection method provided in this disclosure determines the 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; based on the change in the stable fuel resistance value, it is determined whether the target fuel tank has leaked. This disclosure method determines the fuel resistance value during stable driving of the vehicle and judges whether the vehicle's fuel tank has leaked based on this fuel resistance value. The measurement of this fuel resistance value is not limited by the operating conditions of the vehicle's engine and avoids the need for an additional, costly fuel tank electronic pump, thus reducing the hardware cost consumed in leak detection.

[0042] In addition, by collecting stable fuel resistance values ​​during the smooth driving of the target vehicle, and using these stable fuel resistance values ​​to determine whether the target fuel tank is leaking, the influence of the vehicle's driving status on the determination of whether the target vehicle is leaking fuel is reduced.

[0043] In some embodiments of this disclosure, determining whether a target fuel tank is leaking based on changes in steady-state fuel resistance includes:

[0044] The first preset number of stable fuel resistance values ​​that are sequentially adjacent are divided into fuel resistance value groups; the number of stable fuel resistance values ​​that are separated by sequentially adjacent fuel resistance value groups is a second preset number; based on the stable fuel resistance values ​​included in each fuel resistance value group, the fuel leakage judgment value of the fuel resistance value group is calculated.

[0045] Figure 2 This is a flowchart illustrating another method for detecting oil leaks in a fuel tank provided in an embodiment of this disclosure, as shown below. Figure 2 As shown, the method for detecting oil leaks in the fuel tank includes:

[0046] Step 201: Determine the 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 process of the target vehicle.

[0047] Step 202: Divide the first preset number of time-adjacent stable fuel resistance values ​​into fuel resistance value groups; wherein, the number of stable fuel resistance values ​​separated by time-adjacent fuel resistance value groups is the second preset number.

[0048] The first preset quantity can be the number of stable fuel resistance values ​​in the fuel resistance value group. This first preset quantity can be a fixed number set according to user needs, for example, 600. Alternatively, the first preset quantity can be the number of stable fuel resistance values ​​within a preset time period, for example, the number of stable fuel resistance values ​​within 60 seconds prior to the current moment. The fuel resistance value group can be a group containing multiple stable fuel resistance values. Fuel resistance value groups with adjacent time sequences can share a common stable fuel resistance value; that is, a stable fuel resistance value can exist simultaneously in two fuel resistance value groups with adjacent time sequences.

[0049] The second preset quantity can be understood as the number of stable fuel resistance values ​​between the first stable fuel resistance value of a time-adjacent fuel resistance value group. This second preset quantity can be a pre-set number, and this embodiment does not limit this second preset quantity. For example, the second preset quantity can be 1 or 600, etc. It is understood that if the second preset quantity is the same as the first preset quantity, then there is no common stable fuel resistance value between time-adjacent fuel resistance value groups.

[0050] In this embodiment, the fuel tank leak detection device sorts the stable fuel resistance values ​​according to the 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 ​​between each sampling is a second preset number. The corresponding fuel resistance value group is determined based on the stable fuel resistance values ​​obtained from each sampling.

[0051] Step 203: Calculate the oil leakage judgment value of each fuel resistance group based on the stable fuel resistance values ​​included in each fuel resistance group.

[0052] The oil leak detection value can be a numerical value used to determine whether the target fuel tank is leaking. This oil leak detection value can be a value determined mathematically based on the stable fuel resistance values ​​in a fuel resistance value group. This embodiment does not limit the calculation method of the oil leak detection value. For example, the calculation method can include the median, the average value, etc.

[0053] In this embodiment, for each fuel resistance value group, all and / or some 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 leak judgment value based on the fuel resistance value group can further filter out the fluctuation of fuel resistance value caused by the flow of fuel in the fuel tank with the movement of the vehicle, thus improving the accuracy of fuel leak judgment.

[0055] Figure 3 This is a schematic flowchart illustrating a method for determining an oil leak judgment value, as provided in an embodiment of this disclosure. Figure 3As shown in some embodiments of this disclosure, a fuel resistance group leakage judgment value is calculated based on the stable fuel resistance values ​​included in each fuel resistance group, including:

[0056] Step 301: For each fuel resistance value group, calculate the first statistical fuel resistance value based on the stable fuel resistance value in the fuel resistance value group, and calculate the second statistical fuel resistance value based on the third preset number of stable fuel resistance values ​​in the fuel resistance value group.

[0057] The first statistical fuel resistance value can be a statistical value determined based on all stable fuel resistance values ​​in the fuel resistance value group. This first statistical fuel resistance value can represent the overall situation of stable fuel resistance values ​​in the fuel resistance value group. This first statistical fuel resistance value can be the average or median, etc. The second statistical fuel resistance value can be a statistical value determined based on the most recent portion of stable fuel resistance values ​​in the fuel resistance value group. This second statistical fuel resistance value can represent the situation of the most recent portion of stable fuel resistance values ​​in the fuel resistance value group. This second statistical fuel resistance value can be the average, median, etc. The third preset quantity can be set according to user needs, etc., and is not limited in this embodiment. For example, the third preset quantity can be 40.

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

[0059] Step 302: Calculate the oil leak judgment value based on the first statistical fuel resistance value and the second statistical fuel resistance value.

[0060] In this embodiment, after determining the first statistical fuel resistance value and the second statistical fuel resistance value, 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 leak judgment value can be set to the 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 ​​in the previous 60 seconds, then the leak judgment value can be the preset fuel resistance value in the first 60 seconds after the ECU is powered on.

[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 more recent stable fuel resistance value in the fuel resistance value group are calculated. Based on the first and second statistical fuel resistance values, a leak judgment value is determined. The leak judgment value is determined from multiple dimensions such as the overall situation and the more recent time series, which can comprehensively represent the fuel situation in the fuel tank and improve the accuracy of subsequent judgment on whether there is a leak.

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

[0064] In some embodiments of this disclosure, determining whether a target oil tank is leaking based on changes in the oil leakage judgment value includes:

[0065] Under the condition that the preset preconditions are met, the change in the oil leakage judgment value is used to determine whether the target oil tank is leaking. The preset preconditions include: the resistance sensor of the target oil tank is in normal condition, the stable fuel resistance value is within the preset fuel range, and the target vehicle meets the resistance initialization conditions.

[0066] The preset preconditions can be used to determine whether the fuel tank is leaking. These preset preconditions can be set according to user needs, etc., and this embodiment does not impose any restrictions. The resistance sensor can be a level sensor that detects the fuel resistance in the target fuel tank. The resistance value detected by this sensor can be the initial fuel resistance value. This embodiment does not impose any restrictions on the type of sensor used for this resistance sensor. The preset fuel range can be a pre-set range that indicates a normal fuel resistance detection result. This preset fuel range 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 range can be from 30 ohms to 330 ohms. The resistance initialization condition can be the 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 normal condition, it indicates that the initial fuel resistance value measured by the resistance sensor is highly reliable. If the stable fuel resistance value is within the preset fuel range, it indicates that the stable fuel resistance value is highly reliable. If the target vehicle meets the resistance initialization conditions, it means that the initial fuel resistance value of a new cycle can be measured and statistically analyzed independently of the previous initial fuel resistance value.

[0068] If the resistance sensor of the target fuel tank is functioning normally, and the stable fuel resistance value is within the preset fuel range, and the target vehicle meets the resistance initialization conditions, then the target vehicle is determined to meet the preset preconditions. Furthermore, based on the change in the leak detection value, it is determined whether the target fuel tank is leaking.

[0069] In the above scheme, the determination of whether the fuel tank is leaking is determined by preset preconditions, which reduces the possibility of false alarms or missed alarms for fuel tank leaks.

[0070] In some embodiments of this disclosure, the resistance initialization conditions include one or more of the following: the vehicle controller of the target vehicle is updated to a wake-up state; within a preset statistical time period, the cumulative time for which the target vehicle meets the preset acceleration condition is less than the cumulative time threshold; the resistance sensor recovers from an abnormal state to a normal state; the acceleration information of the target vehicle is restored to a valid state; and the acceleration sensor of the target vehicle recovers from an abnormal state to a normal state.

[0071] The vehicle controller is also known as the XCU. The preset statistical duration can be a pre-set duration for calculating whether acceleration information meets acceleration conditions. This embodiment does not limit this preset statistical duration; for example, it can be 300 seconds. The cumulative duration can be the total duration within the preset statistical duration for which acceleration information meets acceleration conditions. The cumulative duration threshold can be a pre-set threshold for judging cumulative duration. This cumulative duration threshold can be set according to user needs, etc., and this embodiment does not limit it; for example, it can be 4 seconds.

[0072] In this embodiment, if the vehicle controller of the target vehicle is updated to a wake-up state, it indicates that the overall controller has started working. If, within a preset statistical period, the cumulative time for the target vehicle to meet the preset acceleration condition is less than the cumulative period threshold, it indicates that the target vehicle's acceleration is large and the time for the target vehicle to drive smoothly is short. Therefore, the reliability of the statistical fuel resistance value within this preset statistical period is low, and a new cycle can be used to measure and statistically analyze the fuel resistance value. If the resistance sensor recovers from an abnormal state to a normal state, it indicates that the initial fuel resistance value previously measured by the resistance sensor was abnormal. If the target vehicle's acceleration information recovers to a valid state and / or the target vehicle's acceleration sensor recovers from an abnormal state to a normal state, it indicates that the previously determined acceleration information was invalid. The target vehicle's acceleration sensor may include a lateral acceleration sensor and / or a longitudinal acceleration sensor.

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

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

[0075] In this embodiment, there are multiple methods for determining whether a target oil tank is leaking based on changes in the leak detection value. This embodiment does not limit the methods, and examples are illustrated below:

[0076] In one optional implementation, determining whether the target oil tank is leaking based on changes in the leak detection value includes:

[0077] If the increment of the oil leak detection value is greater than the first increment resistance value, and the duration for which the increment of the oil leak detection value is less than the second increment resistance value is less than the first duration threshold, then it is determined that the target oil tank is leaking; wherein, the first increment resistance value is greater than the second increment resistance value.

[0078] The increment of the oil leak judgment value can be the change in the oil leak judgment value. This increment can be the change in the oil leak judgment value within a preset time period, and the basis for calculating the increment can be the first oil leak judgment value within the preset time period. Alternatively, the increment of the oil leak judgment value can be the change between the current oil leak judgment value and the initial oil leak judgment value; that is, the basis for calculating the increment of the oil leak judgment value can be the initial oil leak judgment value. The initial oil leak judgment value can be the oil leak judgment value determined when the oil leak flag changes, the refueling flag changes, or the target vehicle's engine changes from an operating state to a stopped state.

[0079] The first incremental resistance value can be the increment of a pre-set leak detection value used to determine whether a leak has actually occurred in the fuel tank. This first incremental resistance value can be set according to user needs, the operating conditions of the target vehicle, etc., and is not limited in this embodiment. For example, the first incremental resistance value can be 30 ohms, or, when the engine of the target vehicle is running, the first incremental resistance value can be 50 ohms. The second incremental resistance value can be the increment of a pre-set leak detection value used to determine whether a leak has actually occurred in the fuel tank. This second incremental resistance value can be set according to user needs, the operating conditions of the target vehicle, etc., and is not limited in this embodiment. For example, the second incremental resistance value can be 20 ohms, or, when the engine of the target vehicle is running, the first incremental resistance value can be 40 ohms.

[0080] In this embodiment, the increment of the leak detection value is counted in real time. If the increment of the leak detection value is greater than a first increment resistance value, it indicates that the fuel tank of the target vehicle may be leaking. To avoid false leak detections caused by factors such as vehicle bumps, after determining that the increment of the leak detection value is greater than the first increment resistance value, it is further determined whether the duration for which the increment of the leak detection value is continuously less than a second increment resistance value within a first preset detection time is less than a first time threshold. If so, it indicates that the fuel in the target fuel tank has indeed decreased, and a leak is confirmed in the target fuel tank. The preset detection time can be adjusted according to user needs, etc., and this embodiment does not impose any restrictions. For example, the first preset detection time can be 10 seconds.

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

[0082] If, when the range extender (i.e., engine) of the target vehicle is not running, the oil leak detection value increases by at least 50 ohms from the initial oil leak detection value, and the increase in the oil leak detection value is less than 40 ohms for less than 5 seconds within 90 seconds after the increase to 50 ohms, then the target fuel tank is determined to be leaking.

[0083] In another optional implementation, determining whether the target oil tank is leaking based on changes in the leak detection value includes:

[0084] If the oil leak detection value changes from less than the preset fuel resistance value to greater than the preset empty tank resistance value, and the duration of the change from less than the preset empty tank resistance value to a duration greater than the second duration threshold, then it is determined that the target fuel tank is leaking.

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

[0086] In this embodiment, within a second preset detection time, it is determined whether the oil leak judgment value changes from less than the fuel resistance value to greater than the preset empty tank resistance value. If so, it indicates that the fuel in the target fuel tank may have rapidly changed from containing fuel to being empty. To further determine whether the target fuel tank is leaking, it is further determined whether the duration for which the oil leak judgment value is greater than the preset empty tank resistance value is greater than a second time threshold. If so, it indicates that the target fuel tank is leaking.

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

[0088] In the above scheme, if the oil leak detection value changes abruptly and remains around the value after the change, the target oil tank is determined to be leaking, thus reducing the possibility of false leak detection.

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

[0090] If a leak is detected in the target fuel tank, and the target vehicle meets the preset leak reset conditions, the leak flag of the target fuel tank will be reset to the no-leak flag.

[0091] The preset leak reset condition can be used to re-determine whether the target fuel tank is leaking. This embodiment does not impose restrictions on this preset leak reset condition. The leak flag can be a variable that records whether the target fuel tank is leaking. The no-leak flag can be a variable value indicating that the target fuel tank is not leaking.

[0092] In this embodiment, upon determining that the target fuel tank is leaking, the fuel tank leak detection device can assign a leak flag to the target fuel tank's leak flag. Furthermore, if the target vehicle meets the leak reset conditions, the leak flag is reset to a no-leak flag.

[0093] In some embodiments of this disclosure, the preset oil leak reset conditions include at least one of the following: the target vehicle does not meet the preset preconditions; the increment of the oil leak judgment value at a preset time interval is less than the third incremental resistance value; and the refueling flag of the target vehicle is the refueling flag.

[0094] The preset time interval can be varied, and this embodiment does not impose any limitations. For example, when the target vehicle's range extender is running, the preset time interval can be 60 seconds; when the target vehicle's range extender is not running, the preset time interval can be 600 seconds. The third incremental resistance value can be the change in the leakage judgment value, which represents a normal change in the fuel volume in the target fuel tank. That is, the third incremental resistance value can be the maximum increment of the leakage judgment value when the target fuel tank is not leaking. This third incremental resistance value can be related to the operating status of the target vehicle's range extender, and there are various types of third incremental resistance values, which are not limited in this embodiment. For example, the third incremental resistance value can be 10 ohms. The refueling flag can be a variable that records whether the target fuel tank has been refueled. The refueling flag can be a variable value representing whether the target fuel tank has been refueled.

[0095] In this embodiment, if the target vehicle does not meet the preset preconditions, it means that the target vehicle does not meet the preconditions for determining whether the target fuel tank is leaking, and therefore the accuracy of the final determination of whether the target fuel tank is leaking is low. If the increment of the leak judgment value at preset time intervals is less than the third increment resistance value, it means that the volume change of the fuel in the target fuel tank is normal, and the target fuel tank is likely not leaking. If the refueling indicator of the target vehicle is on, it means that the target fuel tank is being filled, and it is necessary to re-determine whether the target fuel tank is leaking.

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

[0097] The target vehicle does not meet the preset prerequisites; when the range extender is running, the increment of the oil leak judgment value at a first preset time interval (e.g., 60 seconds) is less than the third increment resistance value (e.g., 10 ohms); when the range extender is not running, the increment of the oil leak judgment value at a second preset time interval (e.g., 600 seconds) is less than the third increment resistance value; the refueling flag is updated to the refueling flag. If any of the first three conditions are met, the oil leak flag is kept at the leak flag for a lag time (e.g., 5 seconds), and then updated to the no-leak flag. If the last condition is met, the oil leak flag is directly updated to the no-leak flag.

[0098] The above solution resets the oil leak flag, enabling a re-detection of whether the target oil tank is leaking.

[0099] The fuel tank leak detection method provided in this disclosure can detect fuel tank leaks without being limited by the engine's operating conditions, and avoids the need for an additional electronic pump, thus reducing hardware costs. By processing the initial fuel resistance value, interference from the target vehicle's driving state is reduced, lowering the probability of false leak detection and improving the accuracy of leak detection.

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

[0101] In some embodiments of this disclosure, Figure 4 The fuel tank leak detection device shown can be operated by electronic equipment or a server. The electronic equipment can include, but is not limited to, mobile terminals such as vehicle-mounted terminals, and fixed terminals such as vehicle domain controllers. 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 determining model 401 and a second determining module 402.

[0103] The first determining module 401 is used to determine the 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 determining module 402 is used to determine whether the target fuel tank is leaking based on the change in the stable fuel resistance value.

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

[0106] The resistance of the fuel in the target fuel tank is detected to obtain the initial fuel resistance value, and the acceleration information of the target vehicle corresponding to each initial fuel resistance value is determined.

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

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

[0109] A division submodule is used to divide a first preset number of time-adjacent stable fuel resistance values ​​into fuel resistance value groups; wherein, the number of stable fuel resistance values ​​separated by the time-adjacent fuel resistance value groups is a second preset number.

[0110] The calculation submodule is used to calculate the oil leakage judgment value of the fuel resistance value group based on the stable fuel resistance value included in each fuel resistance value group.

[0111] The oil leak determination submodule is used to determine whether the target oil tank is leaking oil based on the change of the oil leak judgment value.

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

[0113] For each of the fuel resistance value groups, a first statistical fuel resistance value is calculated based on the stable fuel resistance value in the fuel resistance value group, and a second statistical fuel resistance value is calculated based on the third preset number of stable fuel resistance values ​​in the fuel resistance value group.

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

[0115] Optionally, the oil leak detection submodule is used for:

[0116] Under the condition that the preset preconditions are met, it is determined whether the target oil tank is leaking oil based on the change of the oil leakage judgment value;

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

[0118] Optionally, the resistance initialization conditions include one or more of the following:

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

[0120] Within a preset statistical time period, the cumulative time during which the target vehicle satisfies the preset acceleration condition is less than a cumulative time threshold.

[0121] The resistance sensor has recovered 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 has returned to normal from an abnormal state.

[0124] Optionally, determining whether the target oil tank is leaking based on the change in the oil leakage judgment value includes:

[0125] If the increment of the oil leak judgment value is greater than the first increment resistance value, and the duration for which the increment of the oil leak judgment value is less than the second increment resistance value is less than the first duration threshold, then it is determined that the target oil tank is leaking; wherein, the first increment resistance value is greater than the second increment resistance value.

[0126] Optionally, determining whether the target oil tank is leaking based on the change in the oil leakage judgment value includes:

[0127] If the oil leak determination value changes from less than the preset fuel resistance value to greater than the preset empty tank resistance value, and the duration of the greater than the preset empty tank resistance value is greater than the second duration threshold, then it is determined that the target fuel tank has leaked.

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

[0129] The reset module is used to reset the oil leak flag of the target fuel tank to the no-leak flag if the target vehicle meets the preset oil leak reset conditions when it is determined that the target fuel tank is leaking.

[0130] The preset oil leak reset conditions include at least one of the following:

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

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

[0133] The target vehicle's refueling sign is a refueling sign.

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

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

[0136] like Figure 5 As shown, the oil tank leak 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), an application-specific integrated circuit (ASIC), or one or more integrated circuits that can be configured to implement the embodiments of this application.

[0138] Memory 502 may include a large-capacity storage for information or instructions. For example, and not limitingly, memory 502 may include a hard disk drive (HDD), a floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or a Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, memory 502 may include removable or non-removable (or fixed) media. Where appropriate, memory 502 may be internal or external to the integrated gateway device. In a particular embodiment, memory 502 is a non-volatile solid-state memory. In a particular embodiment, memory 502 includes read-only memory (ROM). Where appropriate, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (Electrically Programmable ROM, EPROM), an electrically erasable programmable PROM (EEPROM), an electrically alterable ROM (EAROM), or 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 this embodiment of the present disclosure.

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

[0141] Bus 504 may include hardware, software, or both. For example, and not limitingly, a 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 Infinite Bandwidth 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, bus 504 may include one or more buses. Although specific buses are described and illustrated in the embodiments of this application, this application considers any suitable bus or interconnection.

[0142] The following are embodiments of a computer-readable storage medium provided in this disclosure. This computer-readable storage medium and the fuel tank leakage detection method of the above embodiments belong to the same inventive concept. For details not described in detail in the embodiments of the computer-readable storage medium, please refer to the embodiments of the above fuel tank leakage detection method.

[0143] This embodiment provides a storage medium containing computer-executable instructions, which, when executed by a computer processor, are used to perform a fuel tank leakage detection method.

[0144] Of course, the computer-executable instructions provided in the embodiments of this disclosure are not limited to the above-described method operations, but can also perform related operations in the oil tank leakage detection method provided in any embodiment of this disclosure.

[0145] Based on the above description of the implementation methods, those skilled in the art can clearly understand that this disclosure can be implemented using software and necessary general-purpose hardware, and of course, it can also be implemented using hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this disclosure, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This 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, hard disk, or optical disk, etc., including several instructions to cause a computer cloud platform (which can be a personal computer, server, or network cloud platform, etc.) to execute the oil tank leakage detection method provided in the various embodiments of this disclosure.

[0146] This disclosure also provides a vehicle, including at least one of the following: the aforementioned fuel tank leak detection device; the aforementioned electronic device; and the aforementioned computer-readable storage medium.

[0147] Note that the above description is merely a preferred embodiment and the technical principles employed in this disclosure. Those skilled in the art will understand that this disclosure is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of this disclosure. Therefore, although this disclosure has been described in detail through the above embodiments, it is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of this disclosure, and the scope of this disclosure is determined by the scope of the appended claims.

Claims

1. A method for detecting oil leaks in a fuel tank, characterized in that, include: Determine the 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 first preset number of time-adjacent stable fuel resistance values ​​are divided into fuel resistance value groups, wherein the number of time-adjacent fuel resistance value groups separated by the number of time-adjacent stable fuel resistance values ​​is a second preset number. For each of the fuel resistance value groups, a first statistical fuel resistance value is calculated based on the stable fuel resistance value in the fuel resistance value group, and a second statistical fuel resistance value is calculated based on the third preset number of stable fuel resistance values ​​in the fuel resistance value group. Based on the first statistical fuel resistance value and the second statistical fuel resistance value, a leak judgment value is calculated, and based on the change of the leak judgment value, it is determined whether the target fuel tank has leaked.

2. The method according to claim 1, characterized in that, The determination of stable fuel resistance includes: The resistance of the fuel in the target fuel tank is detected to obtain the initial fuel resistance value, and the acceleration information of the target vehicle corresponding to each initial fuel resistance value is determined. The initial fuel resistance value whose acceleration information satisfies the 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 oil tank is leaking based on the change in the oil leakage judgment value includes: Under the condition that the preset preconditions are met, it is determined whether the target oil tank is leaking oil based on the change of the oil leakage judgment value; The preset prerequisites include: the resistance sensor of the target fuel tank is in normal condition, the stable fuel resistance is within a preset fuel range, and the target vehicle meets the resistance initialization conditions.

4. The method according to claim 3, characterized in that, The resistance initialization conditions include one or more of the following: The vehicle controller of the target vehicle is updated to a wake-up state; Within a preset statistical time period, the cumulative time during which the target vehicle satisfies the preset acceleration condition is less than a cumulative time threshold. The resistance sensor has recovered 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 has returned to normal from an abnormal state.

5. The method according to claim 1 or 3, characterized in that, The step of determining whether the target oil tank is leaking based on the change in the oil leakage judgment value includes: If the increment of the oil leak judgment value is greater than the first increment resistance value, and the duration for which the increment of the oil leak judgment value is less than the second increment resistance value is less than the first duration threshold, then it is determined that the target oil tank is leaking; wherein, the first increment resistance value is greater than the second increment resistance value.

6. The method according to claim 1 or 3, characterized in that, The step of determining whether the target oil tank is leaking based on the change in the oil leakage judgment value includes: If the oil leak determination value changes from less than the preset fuel resistance value to greater than the preset empty tank resistance value, and the duration of the greater than the preset empty tank resistance value is greater than the second duration threshold, then it is determined that the target fuel tank has leaked.

7. The method according to claim 3, characterized in that, The method further includes: If it is determined that the target fuel tank is leaking, and if the target vehicle meets the preset leak reset conditions, then the leak flag of the target fuel tank will be reset to the no-leak flag. The preset oil leak reset conditions include at least one of the following: The target vehicle does not meet the preset prerequisites; The increment of the oil leakage judgment value at a preset time interval is less than the third incremental resistance value; The refueling sign on the target vehicle is a refueling sign.

8. A fuel tank leakage detection device, characterized in that, include: The first determining module is used to determine the 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 determining module is used to divide the first preset number of time-adjacent stable fuel resistance values ​​into fuel resistance value groups, wherein the number of stable fuel resistance values ​​separated by the time-adjacent fuel resistance value groups is a second preset number; for each fuel resistance value group, a first statistical fuel resistance value is calculated based on the stable fuel resistance values ​​in the fuel resistance value group, and a second statistical fuel resistance value is calculated based on the last third preset number of stable fuel resistance values ​​in the fuel resistance value group; a leak judgment value is calculated based on the first statistical fuel resistance value and the second statistical fuel resistance value, and a leak judgment value is determined based on the change of the leak judgment value to determine whether the target fuel tank has leaked.

9. An electronic device, characterized in that, The electronic device includes: Processor and memory; The processor executes the steps of the method as described in any one of claims 1 to 7 by invoking programs or instructions stored in the memory.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a program or instructions that cause a computer to perform the steps of the method as described in any one of claims 1 to 7.

11. A vehicle, characterized in that, Includes at least one of the following: The oil tank leakage detection device as described in claim 8 above; The electronic device according to claim 9 above; The computer-readable storage medium as described in claim 10.

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