Method, device, vehicle and computer readable storage medium for transmitting a distress signal

Abstract

The application discloses a method, device, vehicle and computer readable storage medium for sending a distress signal, and belongs to the technical field of vehicle safety. The method comprises the following steps: obtaining acceleration information and rollover angle information of a vehicle; obtaining force information of the vehicle based on the acceleration information, wherein the force information comprises first characteristic information of multiple types of forces; in the case that a reference condition is met, confirming that the vehicle has been involved in an accident, obtaining vehicle position information, object state information and recording information within a reference period, wherein the reference period comprises a time when the vehicle has been involved in the accident, the object state information and the recording information correspond to a reference object, and the reference object comprises at least one of an object located inside the vehicle and an object located outside the vehicle; and sending a distress signal to a rescue unit, wherein the distress signal comprises the rollover angle information, the force information, the vehicle position information, the object state information and the recording information. The application can accurately and efficiently automatically send a distress signal.

Description

Technical Field

[0001] This application relates to the field of vehicle safety technology, and in particular to a method, apparatus, vehicle, and computer-readable storage medium for sending distress signals. Background Technology

[0002] With the development of vehicle safety technology, vehicles can provide more and more safety protection functions, one of which is the vehicle's distress signal function. This distress signal function is a feature that sends out distress signals to request assistance.

[0003] In related technologies, in the event of a vehicle accident, occupants need to manually activate the vehicle's emergency call function. For example, occupants manually press the emergency call button to activate the function, thus sending an emergency signal.

[0004] However, the transmission of distress signals in related technologies relies on manual operation by people inside the vehicle, which results in low efficiency and significant limitations. Summary of the Invention

[0005] This application provides a method, apparatus, vehicle, and computer-readable storage medium for sending distress signals, which can be used to solve the problems in related technologies where sending distress signals relies on manual operation by people inside the vehicle, resulting in low efficiency and strong limitations. The technical solution provided by this application includes the following aspects.

[0006] On one hand, embodiments of this application provide a method for sending a distress signal, the method comprising:

[0007] Acquire vehicle acceleration information and roll angle information, wherein the roll angle information includes multiple roll angles in a first direction;

[0008] The force information of the vehicle is obtained based on the acceleration information, and the force information includes first characteristic information of multiple types of forces;

[0009] Under the condition of meeting the reference conditions, vehicle location information, object status information and audio recording information are obtained within the reference time period. The condition of meeting the reference conditions is used to indicate that the vehicle has been involved in an accident. The reference time period includes the time when the vehicle was involved in the accident. The object status information and the audio recording information correspond to the reference object. The reference object includes at least one of the objects located inside the vehicle and the objects located outside the vehicle.

[0010] Send a distress signal to the rescue unit, the distress signal including the flip angle information, the force information, the vehicle position information, the object status information, and the audio recording information;

[0011] The conditions for satisfying the reference conditions include at least one of the following:

[0012] The flip angle in at least one of the plurality of first directions satisfies the first condition;

[0013] The first characteristic information of at least one type of force among the multiple types of forces satisfies the second condition.

[0014] In an exemplary embodiment, the first characteristic information of any type of force includes the value of the force and the second direction, the first condition includes a flip angle threshold corresponding to each first direction, and the second condition includes a reference threshold corresponding to each type of force in each second direction; the satisfaction of the reference condition includes at least one of the following: in the plurality of first directions, the flip angle in any one first direction is greater than the flip angle threshold corresponding to the arbitrary first direction; in the plurality of forces, the value of any type of force is greater than the reference threshold corresponding to the arbitrary type of force in the second direction of the arbitrary type of force.

[0015] In an exemplary embodiment, the method further includes: obtaining the vehicle model, the scene in which the vehicle is located, and the vehicle's safety mode; and determining, based on the model, the scene, and the safety mode, a flip angle threshold corresponding to each first direction, and a reference threshold corresponding to each type of force in each second direction.

[0016] In an exemplary embodiment, before sending a distress signal to a rescue unit, the method further includes: determining accident severity indication information based on the flip angle information, the force information, the vehicle position information, the object state information, and the recording information, wherein the accident severity indication information is used to indicate the severity of the accident involving the vehicle; determining a reference frequency, a reference type, and a reference quantity based on the accident severity indication information; and sending a distress signal to a rescue unit includes: sending the reference quantity of distress signals to a rescue unit of the reference type according to the reference frequency.

[0017] In an exemplary embodiment, the number of vehicle location information is multiple, and the multiple vehicle location information is used to indicate the driving trajectory of the vehicle. The method further includes: obtaining the cause of the vehicle accident; if the cause of the vehicle accident is related to the driving trajectory of the vehicle, obtaining a rescue trajectory based on the driving trajectory of the vehicle, wherein the similarity between the rescue trajectory and the driving trajectory of the vehicle is less than a similarity threshold; and sending the rescue trajectory to the rescue unit.

[0018] In an exemplary embodiment, obtaining the vehicle's acceleration information and roll angle information includes: obtaining second feature information of a vehicle component used by a driver to drive the vehicle; and obtaining the vehicle's acceleration information and roll angle information when the second feature information of the vehicle component satisfies a third condition.

[0019] On the other hand, an apparatus for sending a distress signal is provided, the apparatus comprising:

[0020] The first acquisition module is used to acquire the vehicle's acceleration information and roll angle information, wherein the roll angle information includes multiple roll angles in a first direction;

[0021] The second acquisition module is used to acquire the force information of the vehicle based on the acceleration information, wherein the force information includes first feature information of multiple types of forces;

[0022] The third acquisition module is used to acquire vehicle location information, object status information and audio recording information within a reference time period when the reference conditions are met. The reference conditions are used to indicate that the vehicle has been involved in an accident. The reference time period includes the time when the vehicle was involved in the accident. The object status information and the audio recording information correspond to a reference object. The reference object includes at least one of the objects located inside the vehicle and the objects located outside the vehicle.

[0023] The sending module is used to send a distress signal to the rescue unit. The distress signal includes the flip angle information, the force information, the vehicle position information, the object status information, and the recording information.

[0024] The conditions for satisfying the reference conditions include at least one of the following:

[0025] The flip angle in at least one of the plurality of first directions satisfies the first condition;

[0026] The first characteristic information of at least one type of force among the multiple types of forces satisfies the second condition.

[0027] In an exemplary embodiment, the first characteristic information of any type of force includes the value of the force and the second direction, the first condition includes a flip angle threshold corresponding to each first direction, and the second condition includes a reference threshold corresponding to each type of force in each second direction; the satisfaction of the reference condition includes at least one of the following: in the plurality of first directions, the flip angle in any one first direction is greater than the flip angle threshold corresponding to the arbitrary first direction; in the plurality of forces, the value of any type of force is greater than the reference threshold corresponding to the arbitrary type of force in the second direction of the arbitrary type of force.

[0028] In an exemplary embodiment, the device further includes: a fourth acquisition module, configured to acquire the vehicle model, the scene in which the vehicle is located, and the vehicle's safety mode; and based on the model, the scene, and the safety mode, determine a flip angle threshold corresponding to each first direction, and a reference threshold corresponding to each type of force in each second direction.

[0029] In an exemplary embodiment, the apparatus further includes: a determining module, configured to determine accident severity indication information based on the flip angle information, the force information, the vehicle position information, the object state information, and the recording information, wherein the accident severity indication information is used to indicate the severity of an accident involving the vehicle; and to determine a reference frequency, a reference type, and a reference quantity based on the accident severity indication information;

[0030] The sending module is used to send the reference number of distress signals to the rescue unit of the reference type according to the reference frequency.

[0031] In an exemplary embodiment, the number of vehicle location information is multiple, and the multiple vehicle location information is used to indicate the driving trajectory of the vehicle. The device further includes: a fifth acquisition module, used to acquire the cause of the vehicle accident; when the cause of the vehicle accident is related to the driving trajectory of the vehicle, to acquire a rescue trajectory based on the driving trajectory of the vehicle, wherein the similarity between the rescue trajectory and the driving trajectory of the vehicle is less than a similarity threshold.

[0032] The sending module is also used to send the rescue trajectory to the rescue unit.

[0033] In an exemplary embodiment, the first acquisition module is configured to acquire second feature information of a vehicle component used by a driver to drive the vehicle; and, if the second feature information of the vehicle component satisfies a third condition, acquire the acceleration information and the roll angle information of the vehicle.

[0034] On the other hand, a computer device is provided, the computer device including a processor and a memory, the memory storing at least one computer program, the at least one computer program being loaded and executed by the processor to enable the computer device to implement any of the methods for sending distress signals described above.

[0035] On the other hand, a computer-readable storage medium is also provided, wherein at least one computer program is stored therein, the at least one computer program being loaded and executed by a processor to enable a computer to implement any of the methods for sending distress signals described above.

[0036] On the other hand, a computer program product or computer program is also provided, comprising computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform any of the methods described above for sending a distress signal.

[0037] The technical solution provided in this application has at least the following beneficial effects:

[0038] By using vehicle acceleration and rollover angle information, the system can detect vehicle accidents in real time and accurately. Upon detecting an accident, it automatically sends a distress signal to rescue units, resulting in high efficiency. Furthermore, this distress signal includes various information, helping rescue units understand the accident situation and ensuring accurate and appropriate rescue, thus improving vehicle safety. The method provided in this application embodiment does not require manual operation by vehicle occupants to trigger the distress signal transmission, thereby expanding the method of sending distress signals to various scenarios with minimal limitations. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of an implementation environment provided in an embodiment of this application;

[0041] Figure 2 This is a schematic diagram of a method for sending a distress signal provided in an embodiment of this application;

[0042] Figure 3 This is a flowchart illustrating a method for sending a distress signal according to an embodiment of this application;

[0043] Figure 4 This is a schematic diagram of the structure of a device for sending a distress signal according to an embodiment of this application;

[0044] Figure 5 This is a schematic diagram of the structure of a computer device provided in an embodiment of this application. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0046] This application provides a method for sending a distress signal, which can be applied to... Figure 1 The implementation environment shown. For example... Figure 1 As shown, the implementation environment may include a vehicle 11 and a computer device 12 installed in the vehicle 11. The computer device 12 can apply the methods provided in this application embodiment to send a distress signal to a rescue unit when the vehicle 11 is involved in an accident.

[0047] Optionally, the computer device 12 can be a smart device such as a mobile phone, tablet computer, personal computer, or smart vehicle system. The computer device 12 acts as a vehicle black box, enabling the application of the methods provided in this embodiment to function normally even if the vehicle 11 is involved in an accident. This embodiment does not limit the installation location of the computer device 12; installation locations include, but are not limited to, under the vehicle seats.

[0048] Those skilled in the art should understand that the computer device 12 described above is merely an example, and other existing or future computer devices that are applicable to this application should also be included within the scope of protection of this application, and are hereby incorporated by reference.

[0049] For example, Figure 2 A schematic diagram of a module for sending a distress signal is shown. Figure 2 As shown, camera 201 and vehicle black box 212 are respectively connected to bus 202, thereby interconnecting with each other via bus 202. The connection between vehicle black box 212 and bus 202 may include: each module in vehicle black box 212 is connected to bus 202. Exemplarily, the modules in vehicle black box 212 include, but are not limited to: battery module 203, memory 204, driving trajectory recording module 205, satellite positioning module 206, recording module 207, data processing module 208, gyroscope sensor 209, accelerometer sensor 210, and signal transmission module 211.

[0050] Of course, each module in the vehicle black box 212 can connect to other modules in the vehicle black box 212 in addition to being connected to the bus 202. See also... Figure 2 The vehicle trajectory recording module 205, satellite positioning module 206, and recording module 207 are electrically connected to the memory 204. The gyroscope sensor 209 and accelerometer sensor 210 are electrically connected to the data processing module 208. The memory 204, data processing module 208, and signal transmission module 211 are electrically connected in sequence.

[0051] It should be understood that two modules connected via bus 202 can transmit data via bus 202, and two modules electrically connected can transmit data directly via electrical connection. In addition, the aforementioned modules can also be connected wirelessly for data transmission. Details regarding the data transmitted between different modules and their respective functions are provided below. Figure 3 The descriptions in the corresponding method embodiments will not be repeated here.

[0052] Furthermore, the battery module 203 powers the various modules in the camera 201 and the vehicle black box 212. For example, the battery module 203 is in a state of energy storage and micro-discharge when the vehicle is not powered off, and provides power when power is lost (e.g., when the vehicle loses power due to an accident). Exemplarily, the camera 201 and the battery module 203 are connected to the vehicle's power supply system (…). Figure 2 (Not shown in the image) The battery module 203 can power the camera 201 via the power supply system. The battery module 203 can be connected to other modules within the vehicle black box 212 via a bus or directly, thereby enabling the battery module 203 to power other modules within the vehicle black box 212.

[0053] This application provides a method for sending a distress signal. For example, this method can be applied to... Figure 1 The computer device shown. For example, this method can be applied to... Figure 2 The data processing module shown. Figure 3 As shown, the method includes the following steps 301 to 304.

[0054] Step 301: Obtain the vehicle's acceleration information and roll angle information.

[0055] The vehicle's acceleration information and roll angle information are generated during vehicle operation. The vehicle's acceleration information includes the magnitude and direction of the acceleration, and the vehicle's roll angle information includes roll angles in multiple first directions. For example, the multiple first directions include directions corresponding to multiple centerlines of the vehicle. The multiple centerlines of the vehicle include, but are not limited to: the centerline from the center of the front to the center of the rear, the centerline from the center of the top to the center of the bottom, and the centerline from the center of the left side to the center of the right side.

[0056] For example, vehicle acceleration information can be obtained through... Figure 2 The accelerometer shown acquires the vehicle's acceleration information in real time. Correspondingly, the vehicle's roll angle information can be obtained through... Figure 2 The gyroscope sensor shown acquires information that the vehicle's roll angle is detected in real time.

[0057] In some implementations, the data processing module directly obtains the vehicle's acceleration information from the accelerometer and the vehicle's roll angle information directly from the gyroscope sensor. In other implementations, the vehicle's acceleration and roll angle information are stored in a memory, and the data processing module retrieves the vehicle's acceleration and roll angle information from the memory.

[0058] For example, the acceleration information and roll angle information mentioned above are all information detected within a unit time. This application embodiment does not limit the duration of the unit time. The duration of the unit time can be a shorter duration set according to actual needs or experience.

[0059] Next, we will explain the various methods for obtaining vehicle acceleration and roll angle information.

[0060] Method 1: Obtain the second feature information of the vehicle component used by the driver. If the second feature information of the vehicle component meets the third condition, proceed to step 301.

[0061] The vehicle is used by the driver to drive the vehicle, and the vehicle components used by the driver include, but are not limited to, at least one of the following: steering wheel, handbrake, foot brake, seat belt, engine, clutch, and windows. This application does not limit the specific components used. The second characteristic information of the vehicle components can be the driver's operational information on the vehicle components, or it can be the parameter information of the vehicle components themselves, which can be set by those skilled in the art based on experience.

[0062] When the second characteristic information of a vehicle component satisfies the third condition, it indicates a high probability of a vehicle accident, suggesting the vehicle may be in a state of imminent danger of crashing. Compared to directly executing step 301, executing step 301 under these circumstances reduces the operational load on the data processing module and effectively minimizes resource waste.

[0063] For example, for each vehicle element, the second feature information of the vehicle element satisfies the third condition, including: the second feature information of the vehicle element satisfies the threshold corresponding to the vehicle element.

[0064] Taking a vehicle component, including a vehicle window, as an example, the second characteristic information of the vehicle window includes the duration of the driver's operation of the window during vehicle operation. The second characteristic information of the vehicle window satisfies the third condition: the duration of the driver's operation of the window during operation exceeds a duration threshold (i.e., the threshold corresponding to the window). For example, if the duration threshold is set to 10 seconds, when the pressure sensor detects that the driver's operation of the window during vehicle operation exceeds 10 seconds, step 301 is executed.

[0065] The operation can involve generating pressure, and the duration of the driver's pressure on the window can be obtained in real time based on pressure sensor detection. For example, when the pressure sensor detects that the driver begins to exert pressure on the window, a timer is started, and the duration of the timer is the duration of the driver's pressure on the window. If the third condition is met, it is possible that the driver is leaning against the window due to physical discomfort, which increases the probability of a car accident, and therefore step 301 can be executed.

[0066] Taking a vehicle component, including the engine, as an example, the second characteristic information of the engine includes, but is not limited to, engine speed and engine temperature. The second characteristic information of the engine satisfying the third condition includes: the engine speed exceeding a speed threshold, the engine temperature exceeding a temperature threshold, etc. The speed threshold, temperature threshold, etc., can be fixedly set at the factory according to the vehicle model, or can be set by the user. For example, if the engine speed threshold is set to 3500 revolutions per second, when the engine speed sensor detects that the engine speed is greater than 3500 revolutions per second, step 301 is executed.

[0067] Furthermore, when the vehicle component includes a steering wheel, the second characteristic information can be the angle at which the steering wheel rotates per unit time according to the driver's operation; if this angle is greater than an angle threshold, the third condition is considered satisfied. When the vehicle component includes a handbrake (or foot brake, clutch), the second characteristic information can be the number of times the handbrake (or foot brake, clutch) is used per unit time according to the driver's operation; if this number of uses is greater than a number of uses threshold, the third condition is considered satisfied. When the vehicle component includes a seat belt, the second characteristic information can be the distance the seat belt itself moves per unit time; if this distance is greater than a distance threshold, the third condition is considered satisfied.

[0068] Method 2: Obtain the third characteristic information of the vehicle components used by passengers in the vehicle. If the third characteristic information meets the fourth condition, execute step 301.

[0069] The term "passengers in a vehicle" includes all persons riding in the vehicle except the driver. Vehicle components used by passengers include at least one of the following: seats, seatbelts, windows, and roof armrests; however, this application does not limit the specific components. A third characteristic of the vehicle components used by passengers may be the duration of their operation or the magnitude of pressure applied by the passenger. This can be set by those skilled in the art based on experience.

[0070] For example, for each vehicle component used by a passenger, the third characteristic information of the vehicle component satisfies the fourth condition, including: the third characteristic information of the vehicle component satisfies the threshold corresponding to the vehicle component. When the third characteristic information of the vehicle component used by the passenger satisfies the fourth condition, the passengers in the vehicle may be in a state of vigilance against danger, indicating that the probability of a vehicle accident is high, and the vehicle may be in a state of imminent collision. Executing step 301 in this case, compared to directly executing step 301, can reduce the operating load of the data processing module and effectively reduce resource waste.

[0071] Taking a vehicle component used by passengers, including a roof handrail, as an example, the third characteristic information of the roof handrail includes the duration of passenger contact with the roof handrail during vehicle operation, which can be obtained in real time by a pressure sensor. For example, when the pressure sensor detects that a passenger has started touching the roof handrail, a timer is started, and the timed duration is the duration of passenger contact with the roof handrail. The fourth condition is then satisfied: the duration of passenger contact with the roof handrail during vehicle operation exceeds a time threshold. For example, the time threshold for passenger contact with the roof handrail can be set to two minutes; when the duration of passenger contact with the roof handrail exceeds two minutes, step 301 is executed.

[0072] Additionally, when the vehicle component includes a seat, the third feature information can be the distance the passenger moves while seated; if this distance exceeds a distance threshold, the fourth condition is considered met. When the vehicle component includes a seatbelt, the third feature information can be the distance the seatbelt itself moves per unit time; if this distance exceeds a distance threshold, the fourth condition is considered met. When the vehicle component includes a window, the third feature information includes the duration for which the passenger operates the window during vehicle operation; if this duration exceeds a duration threshold, the fourth condition is considered met.

[0073] Method 3: Obtain road condition information during vehicle operation. If the road condition information during vehicle operation meets the fifth condition, proceed to step 301.

[0074] Road condition information during vehicle operation includes, but is not limited to, at least one of the following: the road segment where the vehicle is located, the time point in time when the vehicle is on a certain road segment, and whether the vehicle is in traffic congestion. Correspondingly, road condition information satisfying the fifth condition includes: the road segment where the vehicle is located is an accident-prone area, the time point when the vehicle is on a certain road segment is during an accident-prone period, the vehicle is in traffic congestion, etc., which are not limited in this embodiment. For example, road condition information during vehicle operation can be obtained by a dashcam.

[0075] When the road condition information during vehicle operation meets the fifth condition, it indicates that the current road conditions are complex and the possibility of a traffic accident is relatively high. Executing step 301 at this point, compared to directly executing step 301, reduces the operational load on the data processing module and minimizes resource waste.

[0076] The above three possible acquisition methods can be used individually, in rotation, or in combination. When used in combination, step 301 can be executed if one of the multiple acquisition methods satisfies the combined requirement, or step 301 can be executed for each of the multiple acquisition methods satisfied by the combined requirement.

[0077] During vehicle operation, the acquisition method used can be switched according to the actual situation. For example, the actual situation may include the driver's continuous driving time exceeding the time of driver fatigue, etc., which is not limited in this embodiment. For instance, when the driver first starts driving, acquisition method three is used to determine whether to execute step 301. However, if it is detected that the driver's continuous driving time exceeds the time of driver fatigue, acquisition methods one and two are used to determine whether to execute step 301.

[0078] Step 302: Obtain the force information of the vehicle based on the acceleration information.

[0079] The force information includes first characteristic information of various types of forces, which are different forces that a vehicle may experience during driving. For example, the various types of forces include at least one of impact force and friction force. For example, the first characteristic information of any type of force includes the value of the force and a second direction, whereby the second direction corresponds to the direction of the force acting on the vehicle. For instance, if a vehicle collides head-on with another vehicle while traveling forward, the vehicle experiences a rearward impact force with a certain value. Or, for example, if a vehicle scrapes against another vehicle while traveling, a friction force with a certain value and a second direction is generated between the two vehicles.

[0080] It should be noted that if the types of forces acting on a vehicle during operation are different, the methods for obtaining the force information of the vehicle based on acceleration information may also differ. These will be explained separately below.

[0081] In scenario one, the force acting on the vehicle is an impact force.

[0082] For example, force information of a vehicle is obtained based on acceleration information, including (1) or (2) below.

[0083] (1) Obtain the change in acceleration based on acceleration information, and obtain the force information of the vehicle based on the change in acceleration. The change in acceleration is the change in the vehicle's acceleration before and after being hit. The impact on the vehicle can be, for example, a frontal collision or a rear collision.

[0084] For example, if a vehicle is involved in a frontal collision, the change in vehicle acceleration before and after the frontal impact is obtained based on the acceleration information detected in real time by the acceleration sensor. Based on this change in acceleration, the impact force on the vehicle is calculated using the formula (A1-|A2|)×M=F. A1 is the acceleration generated when the vehicle is moving forward normally, which is a positive value; A2 is the acceleration generated after the frontal collision, which is a negative value; M is the mass of the vehicle; and F is the impact force on the vehicle.

[0085] In other words, by determining the vehicle's acceleration A1 before the frontal impact, the absolute value of the acceleration |A2| after the frontal impact, and the vehicle's mass M, the impact force on the vehicle can be obtained using the above formula and the determined A1, |A2|, and M. It should be understood that because the vehicle experiences a frontal impact, the direction of the acceleration after the impact is opposite to the direction of the acceleration generated when the vehicle is moving forward normally; that is, the direction of this acceleration is backward. Therefore, the change in acceleration is obtained by calculating the difference between the vehicle's acceleration before and after the impact.

[0086] In addition, the acceleration information of the vehicle after being hit by the collision, which is detected in real time by the acceleration sensor, includes the direction of the acceleration. The direction of the acceleration is taken as the second direction of the impact force on the vehicle, which is the rearward direction.

[0087] Based on the above explanation, in the event of a frontal collision, it is possible to determine both the value of the impact force and the corresponding second direction of the impact force, thereby obtaining the force information of the vehicle.

[0088] Alternatively, if the vehicle is rear-ended, the change in the vehicle's acceleration after the impact is determined based on real-time acceleration information detected by the accelerometer. Based on this change in acceleration, the impact force is calculated using the formula (A1 + |A2|) × M = F. Here, A1 is the acceleration generated when the vehicle is moving forward normally (positive); A2 is the acceleration generated when the vehicle is rear-ended (positive); M is the mass of the vehicle; and F is the impact force.

[0089] In other words, by determining the vehicle's acceleration A1 before the rear-end collision, the absolute value of the acceleration |A2| after the rear-end collision, and the vehicle's mass M, the impact force on the vehicle can be obtained using the above formula and the already determined A1, |A2|, and M. It should be understood that since the vehicle experiences a rear-end collision, the direction of the acceleration after the impact is the same as the direction of the acceleration generated when the vehicle is moving forward normally; that is, the direction of this acceleration is forward. Therefore, the change in acceleration is obtained by calculating the sum of the accelerations before and after the impact.

[0090] In addition, the direction of acceleration can be taken as the direction of the impact force on the vehicle, and the direction of acceleration can be taken as the second direction of the impact force on the vehicle, which is the forward direction.

[0091] Based on the above explanation, in the event of a rear-end collision, it is possible to determine both the value of the impact force and the corresponding second direction of the impact force, thereby obtaining the force information of the vehicle.

[0092] (2) Based on acceleration information, the force information of the vehicle is directly obtained.

[0093] For example, if the vehicle is hit in other directions (i.e., directions other than front and rear), the acceleration and direction of the acceleration are obtained based on the acceleration information detected in real time by the acceleration sensor.

[0094] Based on the accelerations experienced by the vehicle in other directions, the impact force on the vehicle is obtained using the formula A3 × M = F. Here, A3 is the acceleration experienced by the vehicle in other directions, and F is the impact force. In other words, the process of calculating the impact force on the vehicle in other directions is as follows: determine the vehicle's acceleration A3 after being subjected to the impact force in other directions, determine the vehicle's mass M, and use the above formula and the already determined A3 and M to obtain the impact force. Furthermore, the direction of the acceleration can be used as the direction of the impact force on the vehicle. Thus, the force information of the vehicle is obtained.

[0095] In the second scenario, the force acting on the vehicle is friction.

[0096] In scenario two, the force information of the vehicle can be obtained based on the correspondence between acceleration information and friction force. For example, by querying the correspondence between acceleration information and friction force based on the acceleration information, the corresponding friction force can be obtained, that is, the value and second direction of the friction force, thus obtaining the force information.

[0097] Step 303: If the reference conditions are met, obtain the vehicle location information, object status information, and audio recording information within the reference time period.

[0098] Meeting reference conditions is used to indicate that a vehicle accident has occurred. Meeting reference conditions includes at least one of the following: the rollover angle in at least one of a plurality of first directions meets a first condition; and first characteristic information of at least one type of force from a plurality of types of forces meets a second condition. When a vehicle accident occurs, it may exhibit at least one state, including impact and rollover. Therefore, using the vehicle's rollover angle and force information as reference conditions can accurately detect vehicle accidents and has a wide range of applications.

[0099] The first condition includes a rollover angle threshold for each first direction. For example, when the first direction corresponds to the direction along the central axis from the center of the front of the vehicle to the center of the rear, the rollover angle threshold for that first direction is 45 degrees. If the rollover angle of the vehicle in this first direction is greater than 45 degrees, the first condition is considered met, and a rollover accident may occur. As another example, when the first direction corresponds to the direction along the central axis from the center of the top of the vehicle to the center of the bottom, the rollover angle threshold for that first direction is 90 degrees. If the rollover angle of the vehicle in this first direction is greater than 90 degrees, the first condition is considered met, and a rollover accident may occur.

[0100] The second condition includes reference thresholds for each type of force in each second direction. For example, the second condition includes reference thresholds of 100N for a leftward impact force, 200N for a rightward impact force, 300N for a leftward frictional force, and 400N for a rightward frictional force. For instance, when a vehicle experiences a leftward impact force, the corresponding reference threshold is set at 100N. If the leftward impact force exceeds 100N, the second condition is met, and an accident may occur.

[0101] Therefore, satisfying the reference condition can also be expressed as: satisfying the reference condition includes at least one of the following: among multiple first directions, the flip angle in any one first direction is greater than the flip angle threshold corresponding to any one first direction; among multiple types of force, the value of any type of force is greater than the reference threshold corresponding to any type of force in the second direction of any type of force.

[0102] Of course, the above description is only an example. The embodiments of this application can also ensure that the reference threshold for each type of force does not change with the direction of the force. For example, regardless of whether the impact force on the vehicle is to the left or right, the reference threshold for the impact force is 100N. Other cases will not be elaborated upon here.

[0103] In one possible implementation, before determining whether the reference conditions are met, the vehicle model, the scenario in which the vehicle is located, and the vehicle's safety mode are obtained. Based on the vehicle model, the scenario in which the vehicle is located, and the safety mode of the vehicle, a rollover angle threshold corresponding to each first direction and a reference threshold corresponding to each type of force in each second direction are determined. In this embodiment of the application, the thresholds applicable to different vehicle models in different scenarios and safety modes are flexibly adjusted according to the vehicle model, the scenario in which the vehicle is located, and the safety mode of the vehicle, thereby improving vehicle safety.

[0104] The vehicle model includes at least one of the vehicle's brand, series, and body style. The vehicle model can be stored in memory and retrieved directly from the memory. The vehicle's scenario includes the situation in which the vehicle was located at the time of the accident. For example, the scenario could be a busy street or a remote mountainous area. The scenario can be captured by the vehicle's cameras. The vehicle's safety mode is used to determine the level of safety of the vehicle in the corresponding scenario, and the driver can set the vehicle's safety mode themselves. For example, the driver can set the vehicle's safety mode to high safety mode.

[0105] For example, different vehicle models can correspond to different thresholds. For instance, the thresholds for medium-sized vans and large trucks are different, and those skilled in the art can set them based on experience. Furthermore, the threshold can also differ depending on the scenario in which the vehicle is located. For example, the more complex the scenario, the more likely the vehicle is to be involved in an accident, and the lower the corresponding threshold, making it easier to determine if an accident has occurred. A higher safety mode for the vehicle indicates a higher requirement for vehicle safety, and the corresponding threshold is lower.

[0106] In addition, the method of determining the threshold by vehicle model, vehicle scenario and vehicle safety mode may include: querying the first correspondence between the vehicle model and the value based on the vehicle model to obtain the first value corresponding to the vehicle model; determining the second value corresponding to the scenario based on the vehicle scenario; and querying the second correspondence between the vehicle safety mode and the value based on the vehicle safety mode to obtain the third value corresponding to the safety mode.

[0107] For any given first direction, a first weighted calculation is performed on the first, second, and third values ​​to obtain a first reference value for that first direction. Based on this first reference value, a flip angle threshold for that first direction is determined. For any type of force, a second weighted calculation is performed on the first, second, and third values ​​for each second direction to obtain a second reference value for that type of force in each second direction. Based on this second reference value, a reference threshold for that type of force in each second direction is determined.

[0108] The above explains how to determine the flip angle threshold and reference threshold, as well as how to determine whether a vehicle meets the reference conditions. Accordingly, after detecting that a vehicle meets the reference conditions, vehicle location information, object status information, and audio recording information can be acquired within the reference time period.

[0109] The reference time period includes the moment when the vehicle accident occurred, and is divided into four categories.

[0110] The first scenario is that the reference time period only includes the moment the vehicle accident occurred. In this scenario, the severity of the accident can be determined based on the vehicle's location information, object status information, and audio recordings at the moment the accident occurred.

[0111] The second scenario involves using a reference time period that includes not only the moment the accident occurred but also the time immediately following it. In this second scenario, by acquiring the vehicle's location information, the object's status information, and audio recordings at both the moment the accident occurred and the time following it, the severity of the accident can be determined. Furthermore, the location of the vehicle after the accident and the status of the objects involved can be identified, facilitating rescue efforts.

[0112] The third scenario involves using a reference time period that includes not only the moment the accident occurred but also the time preceding the accident. In this scenario, by analyzing the vehicle's location, object status, and audio recordings at both the moment the accident occurred and the time preceding it, it is possible to determine the vehicle's condition before the accident, thereby identifying the cause of the accident and assessing its severity.

[0113] The fourth scenario involves using a reference time period that includes not only the moment the accident occurred, but also the moments before and after the accident. In this scenario, by acquiring the vehicle's location information, the object's status information, and audio recordings at the moment of the accident and before and after it, the cause and severity of the accident can be determined. Furthermore, the location of the vehicle after the accident and the status of the objects involved can be identified, facilitating rescue efforts.

[0114] For example, vehicle location information includes one or more locations where a vehicle has passed through, and these locations can form a travel trajectory. Vehicle location information can be obtained through... Figure 2 The satellite positioning module shown obtains the driving trajectory, which can be formed by... Figure 2 The driving trajectory recording module shown records the data. The object status information and audio recording information correspond to the reference object; that is, the object status information is the status of the reference object within a reference time period, and the audio recording information is the sound emitted by the reference object within the reference time period. The reference object includes at least one of the following: objects located inside the vehicle (such as the driver and passengers) and objects located outside the vehicle (such as pedestrians).

[0115] In an exemplary embodiment, the object status information includes the number of reference objects, their seating position, and their age. This object status information can be obtained by capturing images of the reference objects using a camera. The camera includes at least one type: an interior camera and an exterior camera. The audio recording information includes the sounds emitted by the reference objects during a reference time period. This audio recording information can be obtained by... Figure 2 The recording module shown acquires the information. The status information of the reference object and the recording information within the reference time period are used to make a preliminary judgment on the severity of the vehicle accident, the injury status of the reference object, and the possible causes of the accident.

[0116] For example, the camera can capture images of a reference object in at least two ways. The first way includes the camera continuously taking pictures of the reference object from the moment the vehicle begins to move, storing the images in a memory, and retrieving the images of the vehicle's interior at the time of and after the accident from the memory. In this first way, if the camera inside the vehicle continuously takes pictures of objects inside the vehicle from the moment the vehicle begins to move, it may involve the privacy of the objects inside the vehicle, requiring their permission to take pictures. The second way includes the camera continuously taking pictures of the reference object from the moment a car accident occurs. For example, the camera takes pictures of the reference object at varying speeds. During the accident, the camera takes pictures at a high frequency, recording the situation during the accident and the state information of the reference object during the accident. After the accident, the camera takes pictures at a lower frequency, recording the situation after the accident and the state information of the reference object.

[0117] For example, see Figure 2 In one scenario, the data processing module directly obtains the vehicle's location information within the reference time period from the driving trajectory recording module and the satellite positioning module, the object's status information from the internal camera, and the audio recording information from the recording module. In another scenario, the vehicle's location information, object's status information, and audio recording information within the reference time period are stored in the memory, and the data processing module can directly obtain these information from the memory.

[0118] Step 304: Send a distress signal to the rescue unit. The distress signal includes information on the flip angle, force, vehicle position, object status, and audio recording.

[0119] Rescue units include, but are not limited to, hospitals, transportation bureaus, police stations, fire departments, and family members. In this embodiment, the data processing module can... Figure 2 The signal transmitting module shown sends distress signals to one or more rescue units. The method of sending distress signals can be as follows: the signal transmitting module sends distress signals to the rescue units at regular intervals, which can be fixed or variable. Furthermore, the content of the distress signals sent by the signal transmitting module to the rescue units can be the same or different. As time changes, information such as the flip angle, force, vehicle position, object status, and audio recordings will be updated. Therefore, the distress signals sent by the signal transmitting module to the rescue units will include updated information. This updated information more closely approximates the actual situation at the vehicle accident scene, thus helping the rescue units make more accurate judgments.

[0120] In one possible implementation, before sending a distress signal to rescue units, accident severity indication information is determined based on acquired vehicle rollover angle information, force information, vehicle position information, object status information, and audio recordings. The accident severity indication information indicates the severity of the accident. The vehicle rollover angle information includes rollover angles in multiple first directions; the larger the rollover angles in these first directions, the more severe the accident. The vehicle force information includes first characteristic information of various types of forces, which includes the value of any type of force in a second direction; the larger the value of any type of force in the second direction, the more severe the accident. The vehicle position information assists in determining the accident severity indication information; for example, if the vehicle's position information indicates it is currently located in a lake, river, or under a bridge, a serious accident is determined. The object status information is obtained through images of reference objects captured by a camera and is used to indicate the injury status of the objects involved in the accident, including the reference objects; the more severe the injury status of the objects involved in the accident, the more severe the accident. The audio recording includes the sound information emitted by the reference subject within a reference time period. The severity of the accident can be judged based on the content and state of the reference subject's speech during the reference time period. For example, if the audio recording contains a sentence such as "This car was hit really badly, the front of the car was completely smashed, and the person was dizzy", then the severity of the accident can be judged.

[0121] For example, if a vehicle rolls over at a 50-degree angle after being hit, experiences an impact force of 500N to the left, and is now in the middle of the road, with all reference subjects inside the vehicle unconscious and no sound recorded, then the severity of the vehicle accident is determined to be a serious accident.

[0122] For example, the method for determining accident severity indication information based on the acquired vehicle rollover angle information, force information, vehicle position information, object state information, and audio recording information includes: determining the magnitude of the vehicle's rollover angle in multiple first directions based on the vehicle's rollover angle information; determining a first state of accident severity based on the correspondence between accident severity and rollover angle magnitude; determining the magnitude of any type of force in any second direction based on the vehicle's force information, and determining a second state of accident severity based on the correspondence between accident severity and force magnitude; determining a third state of accident severity based on vehicle position information; determining a fourth state of accident severity based on object state information, determining the injury status of the object involved in the accident based on the object state information, and determining the fourth state of accident severity based on the injury status of the object involved in the accident; and determining a fifth state of accident severity based on audio recording information. A third weighted calculation is then performed on the first, second, third, fourth, and fifth states of accident severity to determine the accident severity indication information.

[0123] After determining the severity of the accident, the reference frequency, reference type, and reference quantity are determined based on this information. Following the reference frequency, the reference quantity of distress signals is sent to the corresponding rescue units. The accident severity indication information indicates the severity of the vehicle accident, identifies the emergency situation, and determines the reference frequency, reference type, and reference quantity for sending distress signals to rescue units. This method effectively displays the urgency of the accident and sends valid distress information. Compared to directly sending a fixed number of distress signals to fixed-type rescue units at the same frequency, this method reduces resource waste and ensures that the receiving rescue units are targeted.

[0124] For example, if the severity of the accident is determined to be a minor car accident, a distress signal can be sent to family members every minute without needing to send distress signals to hospitals, fire stations, or other relevant organizations.

[0125] In one possible implementation, multiple vehicle location information points are used to indicate the vehicle's travel trajectory. However, since the cause of a vehicle accident may be related to its travel trajectory, it is necessary to exclude the travel trajectories of vehicles that cannot be used as rescue trajectories and determine a suitable rescue trajectory to prevent rescue units from encountering the same accident as the vehicles that have already been involved in the accident when following the rescue route. Therefore, the cause of the vehicle accident can be obtained, and this cause is used to exclude the travel trajectories of vehicles that cannot be used as rescue trajectories and determine the rescue trajectory. The rescue trajectory is used to help rescue units determine the rescue route and implement the rescue. In addition, the cause of the vehicle accident can be obtained through roll angle information or through audio recording information; this application embodiment does not limit this.

[0126] When the cause of a vehicle accident is related to the vehicle's trajectory, a rescue trajectory is obtained based on the vehicle's trajectory, provided the similarity between the rescue trajectory and the vehicle's trajectory is less than a similarity threshold. This similarity threshold determines whether a path to the accident location can be used as a rescue trajectory. By calculating the similarity between the rescue trajectory and the vehicle's trajectory, paths that cannot be used as rescue trajectories are eliminated, and suitable rescue trajectories are found. This ensures that rescue units can quickly reach the accident location using the rescue trajectory, guaranteeing rescue speed and avoiding delays caused by unexpected events en route.

[0127] For example, if an obstacle appears on a vehicle's trajectory, causing an accident, then the cause of the accident is related to the vehicle's trajectory. The vehicle's trajectory cannot be directly used as a rescue trajectory; a suitable rescue trajectory needs to be found. For example, at least one candidate rescue trajectory is determined, including at least one path that could potentially be the rescue trajectory of a rescue unit. The similarity between the candidate rescue trajectory and the vehicle's trajectory is calculated by: calculating the length of the road segment where the candidate rescue trajectory and the vehicle's trajectory overlap, and using the ratio of the length of the overlapping road segment to the length of the vehicle's trajectory segment as the similarity. If the similarity is less than a similarity threshold, the candidate rescue trajectory is determined as the rescue trajectory of a rescue unit. The calculated similarity can be presented as a percentage, and the similarity threshold can also be presented as a percentage. For example, the similarity threshold can be set to 30%. Those skilled in the art can set this based on experience, and this embodiment does not impose further limitations on this.

[0128] Once the rescue route is determined, it is sent to the rescue units, who then proceed to the accident site to carry out the rescue operation. By directly following the rescue route, the rescue units can reach the accident site without spending additional time searching for a suitable route, thus improving rescue efficiency and reducing delays.

[0129] In summary, the method for sending a distress signal provided in this application embodiment detects whether a vehicle accident has occurred in real time and accurately by using the vehicle's acceleration and rollover angle information. Upon detecting an accident, it automatically sends a distress signal to the rescue unit, resulting in high efficiency. Furthermore, the distress signal includes various information, which helps the rescue unit understand the accident situation, thereby ensuring accurate and appropriate rescue and improving vehicle safety. The method provided in this application embodiment does not require manual operation by vehicle occupants to trigger the distress signal transmission, thus extending the method to various scenarios with minimal limitations.

[0130] See Figure 4 This application provides an apparatus for sending a distress signal, the apparatus comprising:

[0131] The first acquisition module 401 is used to acquire the vehicle's acceleration information and roll angle information, the roll angle information including multiple roll angles in a first direction;

[0132] The second acquisition module 402 is used to acquire the force information of the vehicle based on the acceleration information. The force information includes first feature information of various types of forces.

[0133] The third acquisition module 403 is used to acquire vehicle location information, object status information and recording information within a reference time period when the reference conditions are met. Meeting the reference conditions is used to indicate that a vehicle accident has occurred. The reference time period includes the time when the vehicle accident occurred. The object status information and recording information correspond to the reference object. The reference object includes at least one of the objects located inside the vehicle and the objects located outside the vehicle.

[0134] The sending module 404 is used to send a distress signal to the rescue unit. The distress signal includes information on the flip angle, force, vehicle position, object status, and audio recording.

[0135] Among them, satisfying the reference conditions includes at least one of the following:

[0136] The flip angle in at least one of the multiple first directions satisfies the first condition;

[0137] The first characteristic information of at least one type of force among multiple types of forces satisfies the second condition.

[0138] In an exemplary embodiment, the first characteristic information of any type of force includes the value of any type of force and the second direction. The first condition includes a flip angle threshold corresponding to each first direction, and the second condition includes a reference threshold corresponding to each type of force in each second direction. Satisfying the reference condition includes at least one of the following: among multiple first directions, the flip angle in any one first direction is greater than the flip angle threshold corresponding to any one first direction; among multiple types of forces, the value of any type of force is greater than the reference threshold corresponding to any type of force in the second direction of any type of force.

[0139] In an exemplary embodiment, the apparatus further includes: a fourth acquisition module, configured to acquire the vehicle model, the scene in which the vehicle is located, and the vehicle's safety mode; and based on the model, scene, and safety mode, determine a flip angle threshold corresponding to each first direction, and a reference threshold corresponding to each type of force in each second direction.

[0140] In an exemplary embodiment, the apparatus further includes: a determining module, configured to determine accident severity indication information based on flip angle information, force information, vehicle position information, object state information, and audio recording information, wherein the accident severity indication information is used to indicate the severity of an accident involving the vehicle; and to determine a reference frequency, reference type, and reference quantity based on the accident severity indication information;

[0141] The transmitting module 404 is used to send a reference number of distress signals to a reference type rescue unit according to a reference frequency.

[0142] In an exemplary embodiment, there are multiple vehicle location information items, which are used to indicate the vehicle's driving trajectory. The device also includes a fifth acquisition module, which is used to acquire the cause of the vehicle accident; when the cause of the vehicle accident is related to the vehicle's driving trajectory, it acquires a rescue trajectory based on the vehicle's driving trajectory, wherein the similarity between the rescue trajectory and the vehicle's driving trajectory is less than a similarity threshold.

[0143] The sending module 404 is also used to send rescue trajectory data to rescue units.

[0144] In an exemplary embodiment, the first acquisition module 401 is used to acquire second feature information of a vehicle component used by the driver to drive the vehicle; and when the second feature information of the vehicle component satisfies a third condition, it acquires the vehicle's acceleration information and roll angle information.

[0145] It should be noted that the apparatus provided in the above embodiments is only illustrated by the division of the above functional modules. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the apparatus and method embodiments provided in the above embodiments belong to the same concept, and their specific implementation process and technical effects are detailed in the method embodiments, which will not be repeated here.

[0146] Figure 5 This is a schematic diagram of the structure of a computer device provided in an embodiment of this application. The device can be a terminal, such as a smartphone, tablet computer, media player, laptop computer, or desktop computer. The terminal may also be referred to as user equipment, portable terminal, laptop terminal, desktop terminal, or other names.

[0147] Typically, a terminal includes a processor 501 and a memory 502.

[0148] Processor 501 may include one or more processing cores, such as a quad-core processor, an octa-core processor, etc. Processor 501 may be implemented using at least one hardware form selected from DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), and PLA (Programmable Logic Array). Processor 501 may also include a main processor and a coprocessor. The main processor, also known as a CPU (Central Processing Unit), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, processor 501 may integrate a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the screen. In some embodiments, processor 501 may also include an AI (Artificial Intelligence) processor, which is used to handle computational operations related to machine learning.

[0149] The memory 502 may include one or more computer-readable storage media, which may be non-transitory. The memory 502 may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In some embodiments, the non-transitory computer-readable storage media in the memory 502 are used to store at least one instruction, which is executed by the processor 501 to cause the terminal to implement the method of sending a distress signal provided in the method embodiments of this application.

[0150] In some embodiments, the terminal may also optionally include: a peripheral device interface 503 and at least one peripheral device. The processor 501, memory 502, and peripheral device interface 503 can be connected via a bus or signal line. Each peripheral device can be connected to the peripheral device interface 503 via a bus, signal line, or circuit board. Specifically, the peripheral device includes at least one of: a radio frequency circuit 504, a display screen 505, a camera assembly 506, an audio circuit 507, and a power supply 508.

[0151] Peripheral device interface 503 can be used to connect at least one I / O (Input / Output) related peripheral device to processor 501 and memory 502. In some embodiments, processor 501, memory 502 and peripheral device interface 503 are integrated on the same chip or circuit board; in some other embodiments, any one or two of processor 501, memory 502 and peripheral device interface 503 can be implemented on separate chips or circuit boards, which is not limited in this embodiment.

[0152] The radio frequency (RF) circuit 504 is used to receive and transmit RF (Radio Frequency) signals, also known as electromagnetic signals. The RF circuit 504 communicates with communication networks and other communication devices via electromagnetic signals. The RF circuit 504 converts electrical signals into electromagnetic signals for transmission, or converts received electromagnetic signals back into electrical signals. Optionally, the RF circuit 504 includes: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a user identity module card, etc. The RF circuit 504 can communicate with other terminals through at least one wireless communication protocol. This wireless communication protocol includes, but is not limited to: metropolitan area networks (MANs), various generations of mobile communication networks (2G, 3G, 4G, and 5G), wireless local area networks (WLANs), and / or WiFi (Wireless Fidelity) networks. In some embodiments, the RF circuit 504 may also include circuitry related to NFC (Near Field Communication), which is not limited in this application.

[0153] Display screen 505 is used to display a UI (User Interface). This UI may include graphics, text, icons, videos, and any combination thereof. When display screen 505 is a touch display screen, it also has the ability to collect touch signals on or above its surface. These touch signals can be input as control signals to processor 501 for processing. In this case, display screen 505 can also be used to provide virtual buttons and / or a virtual keyboard, also known as soft buttons and / or a soft keyboard. In some embodiments, there may be one display screen 505, disposed on the front panel of the terminal; in other embodiments, there may be at least two display screens, disposed on different surfaces of the terminal or in a folded design; in still other embodiments, display screen 505 may be a flexible display screen, disposed on a curved or folded surface of the terminal. Furthermore, display screen 505 may be configured as a non-rectangular irregular shape, i.e., a non-rectangular screen. Display screen 505 may be made of materials such as LCD (Liquid Crystal Display) or OLED (Organic Light-Emitting Diode).

[0154] The camera assembly 506 is used to acquire images or videos. Optionally, the camera assembly 506 includes a front-facing camera and a rear-facing camera. Typically, the front-facing camera is located on the front panel of the terminal, and the rear-facing camera is located on the back of the terminal. In some embodiments, there are at least two rear-facing cameras, which are any one of a main camera, a depth-sensing camera, a wide-angle camera, and a telephoto camera, to achieve background blurring by fusion of the main camera and the depth-sensing camera, panoramic shooting by fusion of the main camera and the wide-angle camera, VR (Virtual Reality) shooting, or other fusion shooting functions. In some embodiments, the camera assembly 506 may also include a flash. The flash can be a single-color temperature flash or a dual-color temperature flash. A dual-color temperature flash refers to a combination of a warm-light flash and a cool-light flash, which can be used for light compensation at different color temperatures.

[0155] The audio circuit 507 may include a microphone and a speaker. The microphone is used to collect sound waves from the user and the environment, converting them into electrical signals that are input to the processor 501 for processing, or to the radio frequency circuit 504 for voice communication. For stereo sound acquisition or noise reduction purposes, multiple microphones may be used, each positioned at a different location on the terminal. The microphone may also be an array microphone or an omnidirectional microphone. The speaker is used to convert electrical signals from the processor 501 or the radio frequency circuit 504 into sound waves. The speaker may be a traditional film speaker or a piezoelectric ceramic speaker. When the speaker is a piezoelectric ceramic speaker, it can convert electrical signals not only into audible sound waves but also into inaudible sound waves for purposes such as distance measurement. In some embodiments, the audio circuit 507 may also include a headphone jack.

[0156] Power supply 508 is used to power the various components in the terminal. Power supply 508 can be AC ​​power, DC power, a disposable battery, or a rechargeable battery. When power supply 508 includes a rechargeable battery, the rechargeable battery can support wired or wireless charging. The rechargeable battery can also be used to support fast charging technology.

[0157] In some embodiments, the terminal further includes one or more sensors 509. The one or more sensors 509 include, but are not limited to: an accelerometer 510, a gyroscope 511, a pressure sensor 512, an optical sensor 513, and a proximity sensor 514.

[0158] Accelerometer 510 can detect the magnitude of acceleration along the three axes of a coordinate system established by the terminal. For example, accelerometer 510 can be used to detect the components of gravitational acceleration along the three axes. Processor 501 can control display screen 505 to display the user interface in either a landscape or portrait view based on the gravitational acceleration signal acquired by accelerometer 510. Accelerometer 510 can also be used for games or for acquiring user motion data.

[0159] The gyroscope sensor 511 can detect the terminal's orientation and rotation angle. The gyroscope sensor 511, in conjunction with the accelerometer sensor 510, can collect the user's 3D movements on the terminal. Based on the data collected by the gyroscope sensor 511, the processor 501 can perform the following functions: motion sensing (e.g., changing the UI based on the user's tilt), image stabilization during shooting, game control, and inertial navigation.

[0160] The pressure sensor 512 can be installed on the side bezel of the terminal and / or on the lower layer of the display screen 505. When the pressure sensor 512 is installed on the side bezel of the terminal, it can detect the user's grip signal on the terminal, and the processor 501 can perform left / right hand recognition or quick operation based on the grip signal collected by the pressure sensor 512. When the pressure sensor 512 is installed on the lower layer of the display screen 505, the processor 501 can control the operable controls on the UI interface based on the user's pressure operation on the display screen 505. The operable controls include at least one of button controls, scroll bar controls, icon controls, and menu controls.

[0161] An optical sensor 513 is used to collect ambient light intensity. In one embodiment, the processor 501 can control the display brightness of the display screen 505 based on the ambient light intensity collected by the optical sensor 513. Specifically, when the ambient light intensity is high, the display brightness of the display screen 505 is increased; when the ambient light intensity is low, the display brightness of the display screen 505 is decreased. In another embodiment, the processor 501 can also dynamically adjust the shooting parameters of the camera assembly 506 based on the ambient light intensity collected by the optical sensor 513.

[0162] The proximity sensor 514, also known as a distance sensor, is typically installed on the front panel of the terminal. The proximity sensor 514 is used to detect the distance between the user and the front of the terminal. In one embodiment, when the proximity sensor 514 detects that the distance between the user and the front of the terminal is gradually decreasing, the processor 501 controls the display screen 505 to switch from a screen-on state to a screen-off state; when the proximity sensor 514 detects that the distance between the user and the front of the terminal is gradually increasing, the processor 501 controls the display screen 505 to switch from a screen-off state to a screen-on state.

[0163] Those skilled in the art will understand that Figure 5 The structure shown does not constitute a limitation on the terminal and may include more or fewer components than shown, or combine certain components, or use different component arrangements.

[0164] In an exemplary embodiment, a computer device is also provided, comprising a processor and a memory storing at least one computer program. The at least one computer program is loaded and executed by one or more processors to enable the computer device to implement any of the methods described above for sending a distress signal.

[0165] In an exemplary embodiment, a computer-readable storage medium is also provided, which stores at least one computer program that is loaded and executed by a processor of a computer device to enable the computer to implement any of the methods described above for sending a distress signal.

[0166] In one possible implementation, the aforementioned computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a compact disc read-only memory (CD-ROM), magnetic tape, floppy disk, and optical data storage device, etc.

[0167] In an exemplary embodiment, a computer program product or computer program is also provided, comprising computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform any of the methods described above for sending a distress signal.

[0168] It should be noted that all information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data used for analysis, stored data, displayed data, etc.), and signals involved in this application have been authorized by the user or fully authorized by all parties, and the collection, use, and processing of related data must comply with the relevant laws, regulations, and standards of the relevant countries and regions. For example, the audio recording information involved in this application was obtained with full authorization.

[0169] It should be understood that "multiple" as used in this article refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0170] The above description is merely an exemplary embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application should be included within the protection scope of this application.

Claims

1. A method for sending a distress signal, characterized in that, The method includes: Acquire vehicle acceleration information and roll angle information, wherein the roll angle information includes multiple roll angles in a first direction; The force information of the vehicle is obtained based on the acceleration information, and the force information includes first characteristic information of multiple types of forces; Under the condition of meeting the reference conditions, vehicle location information, object status information and audio recording information are obtained within the reference time period. The condition of meeting the reference conditions is used to indicate that the vehicle has been involved in an accident. The reference time period includes the time when the vehicle was involved in the accident. The object status information and the audio recording information correspond to the reference object. The reference object includes at least one of the objects located inside the vehicle and the objects located outside the vehicle. Send a distress signal to the rescue unit, the distress signal including the flip angle information, the force information, the vehicle position information, the object status information, and the audio recording information; The conditions for satisfying the reference conditions include at least one of the following: The flip angle in at least one of the plurality of first directions satisfies the first condition; The first characteristic information of at least one type of force among the multiple types of forces satisfies the second condition.

2. The method according to claim 1, characterized in that, The first characteristic information of any type of force includes the value of the force and the second direction of the force, the first condition includes the flip angle threshold corresponding to each first direction, and the second condition includes the reference threshold corresponding to each type of force in each second direction. The conditions for satisfying the reference criteria include at least one of the following: In the plurality of first directions, the flip angle in any one of the first directions is greater than the flip angle threshold corresponding to any one of the first directions; Among the various types of forces, the value of any one type of force is greater than the reference threshold corresponding to the second direction of that type of force.

3. The method according to claim 2, characterized in that, The method further includes: Obtain the vehicle model, the scene in which the vehicle is located, and the vehicle's security mode; Based on the model, the scenario, and the safety mode, determine the flip angle threshold corresponding to each first direction, and the reference threshold corresponding to each type of force in each second direction.

4. The method according to claim 1, characterized in that, Before sending a distress signal to the rescue unit, the method further includes: Accident severity indication information is determined based on the flip angle information, the force information, the vehicle position information, the object status information, and the audio recording information. The accident severity indication information is used to indicate the severity of the accident that occurred to the vehicle. The reference frequency, reference type, and reference quantity are determined based on the accident severity indication information; Sending a distress signal to rescue units includes: According to the reference frequency, the reference number of distress signals are sent to the rescue unit of the reference type.

5. The method according to claim 1, characterized in that, The number of vehicle location information items is multiple, and these multiple vehicle location information items are used to indicate the vehicle's driving trajectory. The method further includes: Obtain the cause of the vehicle accident; When the cause of the vehicle accident is related to the vehicle's driving trajectory, a rescue trajectory is obtained based on the vehicle's driving trajectory, and the similarity between the rescue trajectory and the vehicle's driving trajectory is less than a similarity threshold. The rescue trajectory is sent to the rescue unit.

6. The method according to any one of claims 1-5, characterized in that, The acquisition of vehicle acceleration information and roll angle information includes: Acquire second feature information of vehicle components used by the driver to drive the vehicle; If the second feature information of the vehicle component satisfies the third condition, the acceleration information and the roll angle information of the vehicle are obtained.

7. A device for transmitting a distress signal, characterized in that, The device includes: The first acquisition module is used to acquire the vehicle's acceleration information and roll angle information, wherein the roll angle information includes multiple roll angles in a first direction; The second acquisition module is used to acquire the force information of the vehicle based on the acceleration information, wherein the force information includes first feature information of multiple types of forces; The third acquisition module is used to acquire vehicle location information, object status information and audio recording information within a reference time period when the reference conditions are met. The reference conditions are used to indicate that the vehicle has been involved in an accident. The reference time period includes the time when the vehicle was involved in the accident. The object status information and the audio recording information correspond to a reference object. The reference object includes at least one of the objects located inside the vehicle and the objects located outside the vehicle. The sending module is used to send a distress signal to the rescue unit. The distress signal includes the flip angle information, the force information, the vehicle position information, the object status information, and the recording information. The conditions for satisfying the reference conditions include at least one of the following: The flip angle in at least one of the plurality of first directions satisfies the first condition; The first characteristic information of at least one type of force among the multiple types of forces satisfies the second condition.

8. The apparatus according to claim 7, characterized in that, The first characteristic information of any type of force includes the value of the force and the second direction of the force, the first condition includes the flip angle threshold corresponding to each first direction, and the second condition includes the reference threshold corresponding to each type of force in each second direction. The conditions for satisfying the reference criteria include at least one of the following: In the plurality of first directions, the flip angle in any one of the first directions is greater than the flip angle threshold corresponding to any one of the first directions; Among the various types of forces, the value of any one type of force is greater than the reference threshold corresponding to the second direction of that type of force.

9. A vehicle, characterized in that, The vehicle includes a computer device, which includes a processor and a memory. The memory stores at least one computer program, which is loaded and executed by the processor to enable the computer device to implement the method of sending a distress signal as described in any one of claims 1 to 6.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one computer program, which is loaded and executed by a processor to enable the computer device to implement the method of sending a distress signal as described in any one of claims 1 to 6.

Images