A method, device and equipment for detecting unintended acceleration of a vehicle

Abstract

This application discloses a method, apparatus, and device for detecting unexpected acceleration of a vehicle. The method includes: firstly, calculating the target speed increase of the target vehicle based on the actual torque and target torque generated during the vehicle's operation; then, calculating the target distance reduction distance between the target vehicle and adjacent vehicles based on the target speed increase; next, calculating a speed increase threshold and a distance reduction distance threshold based on the vehicle's driving operation information; and then, when it is determined that the target speed increase is greater than the speed increase threshold and the target distance reduction distance is greater than the distance reduction distance threshold, an unexpected acceleration of the target vehicle is detected, and an early warning message indicating an unexpected acceleration fault condition is issued. This allows for the use of a standardized monitoring scheme to detect unexpected acceleration of the target vehicle, minimizing false alarms and missed alarms, and improving detection effectiveness.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a method, apparatus and equipment for detecting unintended acceleration of a vehicle. Background Technology

[0002] With the improvement of people's living standards and the rapid development of the social economy, the usage rate of automobiles is gradually increasing, and people's requirements for vehicle functions are also getting higher and higher. Among them, vehicle driving safety has always been a key concern. Unexpected acceleration of a vehicle can cause injury to the vehicle and its occupants, which is one of the most important issues that need to be addressed in vehicle driving safety. Therefore, how to effectively detect unexpected acceleration of a vehicle to ensure driving safety is particularly important.

[0003] Currently, existing methods for detecting unexpected acceleration in vehicles generally involve monitoring the deviation between the actual torque and the target torque, or monitoring whether the torque control actuator is functioning properly. However, while torque reflects acceleration, it doesn't directly cause harm. This can lead to many harmless torque fluctuations being incorrectly monitored, resulting in false alarms. To address this, current methods accumulate torque deviations over time; for example, an unexpected acceleration issue is only reported after the torque deviation exceeds a threshold and persists for a certain period. However, this raises the question of the appropriate timeframe: how long does it take for an over-limit torque deviation to be considered a fault, and it's unclear whether different torque deviations should use the same accumulation time. Therefore, existing methods for detecting unexpected vehicle acceleration fail to achieve ideal detection results and may lead to both false alarms and missed detections. Summary of the Invention

[0004] The main objective of this application is to provide a method, apparatus, and device for detecting unexpected vehicle acceleration. This method and device can use a unified standard monitoring scheme to detect unexpected vehicle acceleration faults of different degrees, thereby minimizing false alarms and missed alarms and effectively improving the detection effect of unexpected vehicle acceleration.

[0005] This application provides a method for detecting unexpected acceleration of a vehicle, including:

[0006] Obtain the actual torque and target torque generated during the driving process of the target vehicle; and calculate the target speed increase of the target vehicle based on the actual torque and target torque.

[0007] Based on the increase in the target vehicle's speed, calculate the reduction in the target distance between the target vehicle and adjacent vehicles;

[0008] Acquire driving operation information of the target vehicle during its driving process; and calculate the vehicle speed increase threshold and the vehicle distance shortening threshold based on the driving operation information;

[0009] When it is determined that the increase in the target vehicle speed is greater than the threshold for the increase in vehicle speed, and the decrease in the target vehicle distance is greater than the threshold for the decrease in vehicle distance, an unexpected acceleration of the target vehicle is detected, and a warning message indicating that the target vehicle has experienced an unexpected acceleration fault is issued.

[0010] In one optional implementation, calculating the target vehicle speed increase based on the actual torque and the target torque includes:

[0011] Calculate the difference between the actual torque and the target torque, and use the difference to calculate the wheel-end acceleration of the target vehicle;

[0012] The wheel-end acceleration is integrated within a preset fixed time window to obtain the target speed increase of the target vehicle.

[0013] In one optional implementation, calculating the reduction distance between the target vehicle and the preceding vehicle based on the increase in the target vehicle's speed includes:

[0014] The increase in the target vehicle speed is integrated within a preset fixed time window to obtain the reduction in the target distance between the target vehicle and nearby vehicles.

[0015] In one optional implementation, the driving operation information includes the following speed of the target vehicle, the time distance between the target vehicle and the adjacent vehicle, the maximum acceleration, and the maximum braking deceleration.

[0016] In one optional implementation, the threshold for the increase in vehicle speed is determined based on the following speed of the target vehicle, the inter-vehicle distance to adjacent vehicles, the maximum acceleration, and the maximum braking deceleration; the threshold for the shortening of the vehicle distance is determined based on the maximum acceleration and the duration of the target vehicle's acceleration.

[0017] Corresponding to the above-mentioned method for detecting unexpected vehicle acceleration, this application proposes a device for detecting unexpected vehicle acceleration, comprising:

[0018] The first acquisition unit is used to acquire the actual torque and target torque generated during the driving process of the target vehicle; and to calculate the target speed increase of the target vehicle based on the actual torque and target torque.

[0019] The calculation unit is used to calculate the target distance reduction distance between the target vehicle and the adjacent vehicle based on the increase in the speed of the target vehicle.

[0020] The second acquisition unit is used to acquire driving operation information of the target vehicle during driving; and to calculate the vehicle speed increase threshold and the vehicle distance shortening threshold based on the driving operation information.

[0021] The detection unit is used to detect that the target vehicle has generated unexpected acceleration when it is determined that the increase in the target vehicle speed is greater than the threshold for the increase in vehicle speed and the reduction in the target vehicle distance is greater than the threshold for the reduction in vehicle distance, and to issue a warning message indicating that the target vehicle has generated unexpected acceleration fault condition.

[0022] In one optional implementation, the first acquisition unit includes:

[0023] A calculation subunit is used to calculate the difference between the actual torque and the target torque, and to use the difference to calculate the wheel-end acceleration of the target vehicle;

[0024] The integral subunit is used to integrate the wheel-end acceleration within a preset fixed time window to obtain the target speed increase of the target vehicle.

[0025] In one alternative implementation, the computing unit is specifically used for:

[0026] The target speed increase of the target vehicle is integrated within a preset fixed time window to obtain the target distance reduction between the target vehicle and the vehicle in front.

[0027] In one optional implementation, the driving operation information includes the following speed of the target vehicle, the time distance between the target vehicle and the adjacent vehicle, the maximum acceleration, and the maximum braking deceleration.

[0028] In one optional implementation, the threshold for the increase in vehicle speed is determined based on the following speed of the target vehicle, the inter-vehicle distance to adjacent vehicles, the maximum acceleration, and the maximum braking deceleration; the threshold for the shortening of the vehicle distance is determined based on the maximum acceleration and the duration of the target vehicle's acceleration.

[0029] This application embodiment also provides a detection device for unexpected vehicle acceleration, including: a processor, a memory, and a system bus;

[0030] The processor and the memory are connected via the system bus;

[0031] The memory is used to store one or more programs, the one or more programs including instructions that, when executed by the processor, cause the processor to perform any of the above-described implementations of the method for detecting unintended acceleration of a vehicle.

[0032] This application also provides a computer-readable storage medium storing instructions that, when executed on a terminal device, cause the terminal device to perform any of the above-described methods for detecting unintended vehicle acceleration.

[0033] Therefore, the embodiments of this application have the following beneficial effects:

[0034] This application provides a method, apparatus, and device for detecting unexpected acceleration of a vehicle. First, the actual torque and target torque generated during the target vehicle's operation are acquired. Then, based on the actual torque and target torque, the target speed increase of the target vehicle is calculated. Next, based on the target speed increase, the target distance reduction distance between the target vehicle and adjacent vehicles is calculated. Then, driving operation information of the target vehicle during its operation is acquired. Based on the driving operation information, a speed increase threshold and a distance reduction distance threshold are calculated. Finally, when it is determined that the target speed increase is greater than the speed increase threshold and the target distance reduction distance is greater than the distance reduction distance threshold, unexpected acceleration of the target vehicle is detected, and a warning message indicating an unexpected acceleration fault condition is issued.

[0035] This allows for the use of a standardized monitoring scheme that compares the target vehicle speed increase with a speed increase threshold and the target vehicle distance reduction with a distance reduction threshold for different degrees of unexpected acceleration fault conditions. This approach minimizes false alarms and missed alarms, effectively improving the detection of unexpected vehicle acceleration. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 A flowchart illustrating a method for detecting unintended acceleration of a vehicle, provided in an embodiment of this application;

[0038] Figure 2 A schematic diagram illustrating the process of calculating the vehicle speed increase threshold and the vehicle distance shortening threshold based on driving operation information, as provided in the embodiments of this application;

[0039] Figure 3 This is a schematic diagram of the composition of a vehicle unexpected acceleration detection device provided in an embodiment of this application. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] Currently, unintended acceleration of vehicles can occur in many vehicle operation scenarios, including malfunctions or failures of vehicle systems or one or more components, as well as cyberattacks in which malicious or otherwise unauthorized commands, data, messages, or signals are introduced into the vehicle's electronic control system. Avoiding or preventing unintended acceleration in vehicles, such as detecting, interrupting, or mitigating it, to prevent harm to the vehicle and its occupants and ensure vehicle safety, remains an important safety objective.

[0042] Existing methods for detecting unexpected acceleration in vehicles typically involve monitoring the deviation between the actual torque and the target torque, or monitoring whether the torque control actuator is functioning correctly. However, while torque reflects acceleration, it does not directly cause harm. This can lead to many harmless torque fluctuations being incorrectly monitored, resulting in false alarms and affecting the vehicle's normal functions and performance.

[0043] To address this issue, the current approach involves accumulating torque deviations over time; for example, an unexpected acceleration problem is only reported after the torque deviation exceeds a threshold and persists for a certain period. However, this raises the question of the appropriate duration for the torque to exceed the limit, and it's unclear whether different torque deviations should be processed using the same accumulation time. Therefore, existing methods for detecting unexpected vehicle acceleration cannot achieve ideal detection results and may lead to both false positives and false negatives.

[0044] Based on this, this application proposes a method, apparatus, and equipment for detecting unexpected vehicle acceleration. It can use a unified standard monitoring scheme to detect unexpected vehicle acceleration faults of different degrees, so as to avoid false alarms and missed alarms as much as possible, and effectively improve the detection effect of unexpected vehicle acceleration.

[0045] The method for detecting unintended vehicle acceleration provided in this application will be described in detail below with reference to the accompanying drawings. See also: Figure 1 The diagram illustrates a flowchart of a method for detecting unintended acceleration of a vehicle according to an embodiment of this application. This embodiment may include the following steps:

[0046] S101: Obtain the actual torque and target torque generated during the driving process of the target vehicle; and calculate the target speed increase of the target vehicle based on the actual torque and target torque.

[0047] In this embodiment, any vehicle that performs unexpected acceleration detection using the method of this application is defined as the target vehicle. Furthermore, to improve the detection effect of unexpected acceleration of the target vehicle and minimize false alarms and missed alarms, this application first utilizes existing or future vehicle operation data acquisition methods to obtain the actual torque and target torque generated during the target vehicle's operation, and defines them as Torq respectively. Act (t) and Torq Int (t), then based on the actual torque Torq Act (t) and target torque Torq Int The value of (t) is used to calculate the increase in the target vehicle's speed (defined here as the target speed increase), and this is defined as δv, which is then used to execute the subsequent step S102.

[0048] It should be noted that this application does not limit the method for obtaining the actual torque and target torque; they can be set according to actual conditions and empirical values. For example, the actual torque can be obtained using dynamic measurement or estimation based on vehicle driving conditions. Dynamic measurement refers to real-time monitoring of engine torque and speed using sensors installed on the crankshaft of the target vehicle's engine. The data is then transmitted to an onboard computer or external device for analysis and processing to obtain the engine's transient torque, thereby capturing the engine's torque output under different operating conditions in real time. The target torque can be calculated based on operating parameters such as the driver's accelerator pedal opening.

[0049] Specifically, one possible implementation is to improve the detection of unexpected acceleration of the target vehicle and minimize false alarms and missed alarms by obtaining the actual torque Torq generated by the target vehicle during its driving process. Act (t) and target torque Torq Int After (t), the difference between the actual torque and the target torque can be calculated first, and the wheel-end acceleration of the target vehicle can be calculated using this difference. Then, the wheel-end acceleration can be integrated within a rolling window (the specific value is not limited and can be set according to the actual situation and experience) of a preset fixed time length (the specific value is not limited and can be set according to the actual situation and experience) to obtain the target speed increase δv of the target vehicle.

[0050] In this implementation, assuming the rolling time window length is 2 seconds (i.e., assuming the driver will perform emergency braking within 2 seconds of unexpected acceleration), the formula for calculating the value of δv at time t′ is as follows:

[0051]

[0052] Among them, Torq Act (t) represents the actual torque based on time; Torq Int (t) represents the time-based target torque; m represents the total mass of the target vehicle; r represents the tire radius of the target vehicle.

[0053] S102: Calculate the target distance reduction between the target vehicle and adjacent vehicles based on the increase in the target vehicle's speed.

[0054] In this embodiment, after calculating the target vehicle speed increase δv in step S101, the target vehicle distance reduction distance between the target vehicle and the adjacent vehicle (such as the vehicle in front) can be calculated based on the target vehicle speed increase δv (here it is defined as the target vehicle distance reduction distance), and defined as δs, to execute the subsequent step S103.

[0055] Specifically, one possible implementation is that after calculating the target vehicle speed increase δv, the target vehicle speed increase δv can be integrated again within a preset fixed time window to obtain the target distance reduction distance δs between the target vehicle and the adjacent vehicle.

[0056] In this implementation, we still assume that the rolling time window length is 2 seconds (i.e., we assume that the driver will perform emergency braking within 2 seconds of unexpected acceleration), and the formula for calculating the value of δs at time t′ is as follows:

[0057]

[0058] Among them, Torq Act (t) represents the actual torque based on time; Torq Int (t) represents the time-based target torque; m represents the total mass of the target vehicle; r represents the tire radius of the target vehicle.

[0059] S103: Obtain driving operation information of the target vehicle during its driving process; and calculate the threshold for the increase in vehicle speed and the threshold for the decrease in vehicle distance based on the driving operation information.

[0060] In this embodiment, in order to improve the detection effect of unexpected acceleration of the target vehicle and avoid false alarms and missed alarms as much as possible, it is necessary not only to calculate the target vehicle speed increase δv and the target vehicle distance shortening distance δs through steps S101 and S102, but also to use various sensors pre-installed on the target vehicle to obtain the driving operation information of the target vehicle during driving. Based on the obtained driving operation information, the speed increase threshold and the distance shortening distance threshold are calculated for subsequent step S104.

[0061] In this application, the specific content and acquisition method of the target vehicle's driving operation information are not limited. The appropriate method can be selected according to the actual situation and experience. One possible implementation method is that the target vehicle's driving operation information may include, but is not limited to, the following speed of the target vehicle (defined as v0), the time distance between the target vehicle and the adjacent vehicle (defined as t0, the specific value is not limited and can be selected according to the actual situation and experience, such as t0 can be set to 0.9, then the distance between the two adjacent vehicles (i.e., the front of the rear vehicle and the rear of the front vehicle) is v0*t0), the maximum acceleration (defined as a1), the maximum braking deceleration (defined as a2), etc.

[0062] Based on this, one optional implementation method is that the threshold for the increase in vehicle speed can be determined according to the following speed v0 of the target vehicle, the time distance t0 between it and the adjacent vehicle, the maximum acceleration a1, and the maximum braking deceleration a2. The specific determination process is as follows:

[0063] Assume that in a following vehicle situation, the following vehicle suddenly accelerates unexpectedly with an unexpected acceleration of a1. Let the initial speed of the following vehicle be v0. After an acceleration duration of t1 (t1 ≤ t, where the driver performs emergency braking within the unexpected acceleration time t, i.e., t represents the driver's reaction time, such as 2 seconds), power is cut off to enter a safe state. At this point, the relative speed is defined as v1. After an acceleration duration of t, the driver of the following vehicle brakes with a deceleration of a2. After a braking duration of t2, the vehicle speed returns to the initial speed v0. The overall process is as follows: Figure 2 As shown, the distance δS by which the vehicle distance shortens during this process can be calculated (i.e., from...). Figure 2 The formula for calculating the area of ​​a quadrilateral formed by solid lines (with vertices A, B, C, and D) is as follows:

[0064]

[0065] Solving the formula yields the following formula:

[0066]

[0067] From the above formula, the threshold for the increase in vehicle speed (represented by v1) can be obtained as follows: Or,

[0068]

[0069] Thus, assuming the previously introduced values ​​of a1, a2, t, and t0 are all 5 m / s 2 9m / s 2 2 seconds and 0.9 seconds, i.e., a1 = 5 m / s 2 a2 = 9m / s 2 Given t = 2s and t0 = 0.9s, when v0 is 7kph, v1 = 0.89 (m / s) = 3.2 (kph) can be calculated using the above formula; or, when v0 is 12kph, v1 = 1.55 (m / s) = 5.6 (kph) can be calculated using the above formula; or, when v0 is 24kph, v1 = 3.23 (m / s) = 11. 0.6 (kph); or, when v0 is 40 kph, v1 = 5.73 (m / s) = 20.6 (kph) can be calculated using the above formula; or, when v0 is 60 kph, v1 = 9.51 (m / s) = 34.2 (kph) can be calculated using the above formula, and so on. The vehicle speed threshold (i.e., the vehicle speed increase threshold v1) that triggers the safety mechanism under any value of v0 can be calculated immediately.

[0070] Building upon this, another optional implementation is that the distance threshold for shortening the vehicle distance can be determined based on the maximum acceleration a1 and the duration t1 of the target vehicle's acceleration. Figure 2 The specific formula for calculating the threshold for shortening the vehicle distance is as follows:

[0071] δS''=0.5*a1*t1 2

[0072] Where δS'' represents the threshold for shortening the vehicle distance, i.e. Figure 2 The calculation result of the area of ​​the triangle formed by vertices A, B, and E.

[0073] Thus, assuming that the values ​​of a1, a2, t, and t0 introduced earlier are still 5 m / s 2 9m / s 2 2 seconds and 0.9 seconds, i.e., a1 = 5 m / s 2 a2 = 9m / s 2Given t = 2s and t0 = 0.9s, when v0 is 7kph, δS'' = 0.08 (m) can be calculated using the above formula; or when v0 is 12kph, δS'' = 0.24 (m); or when v0 is 24kph, δS'' = 1.06 (m); or when v0 is 40kph, δS'' = 3.31 (m); or when v0 is 60kph, δS'' = 9.03 (m), and so on. This allows for the immediate calculation of the vehicle distance threshold (i.e., the vehicle distance reduction threshold δS'') that triggers the safety mechanism for any value of v0.

[0074] It should be noted that, in order to avoid false alarms, when the vehicle speed v0 is less than 7 kph, the values ​​of the vehicle speed increase threshold v1 and the vehicle distance shortening threshold δS'' can be equal to those when v0 is 7 kph.

[0075] S104: When it is determined that the increase in the target vehicle speed is greater than the speed increase threshold and the distance between the target vehicle and the target vehicle is shortened by a distance greater than the distance shortening threshold, the unexpected acceleration of the target vehicle is detected, and a warning message is issued indicating that the target vehicle has experienced an unexpected acceleration fault.

[0076] In this embodiment, after calculating the target vehicle speed increase δv and target distance reduction δs through steps S101 and S102, and calculating the speed increase threshold v1 and distance reduction threshold δS'' through step S103, the target speed increase δv can be further compared with the speed increase threshold v1, and the target distance reduction δs can be compared with the distance reduction threshold δS''. If it is determined that the target speed increase δv is greater than the speed increase threshold v1, and the target distance reduction δs is greater than the distance reduction threshold δS'', then the target vehicle is detected to be producing [unclear - possibly related to vehicle speed increase threshold v1 or distance reduction threshold δS'']. If unexpected acceleration occurs, a warning message indicating an unexpected acceleration malfunction in the target vehicle needs to be issued. The specific content is not limited; it could be displayed on the vehicle's alarm screen with text and / or images to alert the driver that the unexpected acceleration malfunction requires immediate action; alternatively, it could be indicated by flashing lights; or it could be through an audible signal, such as a buzzer or voice announcement. This should trigger a power cut-off after-processing step.

[0077] Thus, by executing the aforementioned steps S101-S104, this application employs vehicle speed change and distance change for fault monitoring in the case of unexpected acceleration. Specifically, when the increase in vehicle speed caused by unexpected acceleration exceeds a threshold, and the decrease in distance caused by unexpected acceleration exceeds a threshold, a safety mechanism to disconnect power is implemented, thereby improving the detection effect.

[0078] In summary, this embodiment provides a method for detecting unexpected vehicle acceleration. First, it acquires the actual torque and target torque generated during the target vehicle's operation. Then, based on the actual torque and target torque, it calculates the target speed increase of the target vehicle. Next, based on the target speed increase, it calculates the target distance reduction distance between the target vehicle and adjacent vehicles. Then, it acquires the driving operation information of the target vehicle during its operation. Based on the driving operation information, it calculates a speed increase threshold and a distance reduction distance threshold. Finally, when it is determined that the target speed increase is greater than the speed increase threshold and the target distance reduction distance is greater than the distance reduction distance threshold, it detects that the target vehicle has experienced unexpected acceleration and issues a warning message indicating that the target vehicle has experienced an unexpected acceleration fault.

[0079] This allows for the use of a standardized monitoring scheme that compares the target vehicle speed increase with a speed increase threshold and the target vehicle distance reduction with a distance reduction threshold for different degrees of unexpected acceleration fault conditions. This approach minimizes false alarms and missed alarms, effectively improving the detection of unexpected vehicle acceleration.

[0080] See Figure 3 As shown, this application also provides an embodiment of a vehicle unexpected acceleration detection device, the device 300 may include:

[0081] The first acquisition unit 301 is used to acquire the actual torque and target torque generated during the driving process of the target vehicle; and to calculate the target speed increase of the target vehicle based on the actual torque and target torque.

[0082] The calculation unit 302 is used to calculate the target distance reduction distance between the target vehicle and the adjacent vehicle based on the increase in the speed of the target vehicle.

[0083] The second acquisition unit 303 is used to acquire driving operation information of the target vehicle during driving; and to calculate the vehicle speed increase threshold and the vehicle distance shortening threshold based on the driving operation information.

[0084] The detection unit 304 is used to detect that the target vehicle has generated unexpected acceleration when it is determined that the increase in the target vehicle speed is greater than the threshold for the increase in vehicle speed and the shortening distance of the target vehicle distance is greater than the threshold for the shortening distance of the target vehicle distance, and to issue a warning message indicating that the target vehicle has generated unexpected acceleration fault condition.

[0085] In some possible implementations of this application, the first acquisition unit 301 includes:

[0086] A calculation subunit is used to calculate the difference between the actual torque and the target torque, and to use the difference to calculate the wheel-end acceleration of the target vehicle;

[0087] The integral subunit is used to integrate the wheel-end acceleration within a preset fixed time window to obtain the target speed increase of the target vehicle.

[0088] In some possible implementations of this application, the computing unit 302 is specifically used for:

[0089] The target speed increase of the target vehicle is integrated within a preset fixed time window to obtain the target distance reduction between the target vehicle and the vehicle in front.

[0090] In some possible implementations of this application, the driving operation information includes the following speed of the target vehicle, the time distance between the target vehicle and the adjacent vehicle, the maximum acceleration, and the maximum braking deceleration.

[0091] In some possible implementations of this application, the threshold for the increase in vehicle speed is determined based on the following speed of the target vehicle, the inter-vehicle distance to the adjacent vehicle, the maximum acceleration, and the maximum braking deceleration; the threshold for the shortening of the vehicle distance is determined based on the maximum acceleration and the duration of the target vehicle's acceleration.

[0092] As can be seen from the above embodiments, the vehicle unexpected acceleration detection device provided in this application first acquires the actual torque and target torque generated during the target vehicle's driving process; and calculates the target speed increase of the target vehicle based on the actual torque and target torque. Then, based on the target speed increase of the target vehicle, it calculates the target distance reduction distance between the target vehicle and adjacent vehicles. Next, it acquires the driving operation information of the target vehicle during its driving process; and calculates the speed increase threshold and the distance reduction distance threshold based on the driving operation information; then, when it is determined that the target speed increase is greater than the speed increase threshold and the target distance reduction distance is greater than the distance reduction distance threshold, it detects that the target vehicle has generated unexpected acceleration and issues a warning message indicating that the target vehicle has generated unexpected acceleration fault conditions.

[0093] This allows for the use of a standardized monitoring scheme that compares the target vehicle speed increase with a speed increase threshold and the target vehicle distance reduction with a distance reduction threshold for different degrees of unexpected acceleration fault conditions. This approach minimizes false alarms and missed alarms, effectively improving the detection of unexpected vehicle acceleration.

[0094] Furthermore, embodiments of this application also provide a detection device for unintended vehicle acceleration, including: a processor, a memory, and a system bus;

[0095] The processor and the memory are connected via the system bus;

[0096] The memory is used to store one or more programs, the one or more programs including instructions that, when executed by the processor, cause the processor to perform any of the above-described implementations of the method for detecting unintended acceleration of a vehicle.

[0097] Furthermore, embodiments of this application also provide a computer-readable storage medium storing instructions that, when executed on a terminal device, cause the terminal device to perform any of the above-described methods for detecting unintended vehicle acceleration.

[0098] As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that all or part of the steps in the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solution of this application, 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 storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network communication device such as a media gateway, etc.) to execute the methods described in various embodiments or some parts of the embodiments of this application.

[0099] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.

[0100] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0101] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for detecting unexpected acceleration of a vehicle, characterized in that, include: Obtain the actual torque and target torque generated by the target vehicle during its operation; And based on the actual torque and the target torque, calculate the target speed increase of the target vehicle; Based on the increase in the target vehicle's speed, calculate the reduction in the target distance between the target vehicle and adjacent vehicles; Acquire driving operation information of the target vehicle during its driving process; and calculate the vehicle speed increase threshold and the vehicle distance shortening threshold based on the driving operation information; When it is determined that the increase in the target vehicle speed is greater than the threshold for the increase in vehicle speed, and the decrease in the target vehicle distance is greater than the threshold for the decrease in vehicle distance, an unexpected acceleration of the target vehicle is detected, and a warning message indicating that the target vehicle has experienced an unexpected acceleration fault is issued.

2. The method according to claim 1, characterized in that, The step of calculating the target vehicle speed increase based on the actual torque and the target torque includes: Calculate the difference between the actual torque and the target torque, and use the difference to calculate the wheel-end acceleration of the target vehicle; The wheel-end acceleration is integrated within a preset fixed time window to obtain the target speed increase of the target vehicle.

3. The method according to claim 2, characterized in that, The step of calculating the reduction in the target vehicle distance between the target vehicle and the vehicle in front, based on the increase in the target vehicle's speed, includes: The increase in the target vehicle speed is integrated within a preset fixed time window to obtain the reduction in the target distance between the target vehicle and nearby vehicles.

4. The method according to any one of claims 1-3, characterized in that, The driving operation information includes the following speed of the target vehicle, the time distance between the target vehicle and the adjacent vehicle, the maximum acceleration, and the maximum braking deceleration.

5. The method according to claim 4, characterized in that, The threshold for the increase in vehicle speed is determined based on the following speed of the target vehicle, the time distance between the vehicle and the adjacent vehicle, the maximum acceleration, and the maximum braking deceleration; the threshold for the shortening of the distance is determined based on the maximum acceleration and the duration of the target vehicle's acceleration.

6. A device for detecting unintended acceleration of a vehicle, characterized in that, include: The first acquisition unit is used to acquire the actual torque and target torque generated by the target vehicle during its driving process; And based on the actual torque and the target torque, calculate the target speed increase of the target vehicle; The calculation unit is used to calculate the target distance reduction distance between the target vehicle and the adjacent vehicle based on the increase in the speed of the target vehicle. The second acquisition unit is used to acquire driving operation information of the target vehicle during driving; and to calculate the vehicle speed increase threshold and the vehicle distance shortening threshold based on the driving operation information. The detection unit is used to detect that the target vehicle has generated unexpected acceleration when it is determined that the increase in the target vehicle speed is greater than the threshold for the increase in vehicle speed and the reduction in the target vehicle distance is greater than the threshold for the reduction in vehicle distance, and to issue a warning message indicating that the target vehicle has generated unexpected acceleration fault condition.

7. The apparatus according to claim 6, characterized in that, The first acquisition unit includes: A calculation subunit is used to calculate the difference between the actual torque and the target torque, and to use the difference to calculate the wheel-end acceleration of the target vehicle; The integral subunit is used to integrate the wheel-end acceleration within a preset fixed time window to obtain the target speed increase of the target vehicle.

8. The apparatus according to claim 7, characterized in that, The computing unit is specifically used for: The target speed increase of the target vehicle is integrated within a preset fixed time window to obtain the target distance reduction between the target vehicle and the vehicle in front.

9. A device for detecting unintended acceleration of a vehicle, characterized in that, include: Processor, memory, system bus; The processor and the memory are connected via the system bus; The memory is used to store one or more programs, the one or more programs including instructions that, when executed by the processor, cause the processor to perform the method according to any one of claims 1-5.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions that, when executed on a terminal device, cause the terminal device to perform the method described in any one of claims 1-5.

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