Driving safety assessment method, assessment device, remote monitoring method and vehicle

Abstract

The present invention belongs to the technical field of vehicle driving safety, and discloses a driving safety assessment method, assessment device, remote monitoring method and vehicle, including when the vehicle activates the dynamic assessment system, if the vehicle meets the first condition, then a safety assessment is performed, and the safety assessment includes: respectively performing safety assessments on the vehicle state, the driver state and the environmental state, judging whether the vehicle state meets the preset first safety threshold, whether the driver state meets the preset second safety threshold and whether the environmental state meets the preset third safety threshold; if any one of the vehicle state, the driver state and the environmental state does not meet the corresponding threshold requirements, then it is determined that the vehicle is in an unsafe driving state. Beneficial effects: The driver's state, the vehicle state and the environmental state are comprehensively considered, and the driving safety can be accurately and reliably assessed to better ensure driving safety.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle driving safety, and in particular to a driving safety assessment method, an assessment device, a remote monitoring method and a vehicle. Background Art

[0002] Traffic accidents cause a lot of property and human losses every year. According to subsequent statistical studies, the vast majority of traffic accidents can be avoided through effective supervision and reminders. Existing driving safety assessment methods often focus on the driver's status and ignore the vehicle itself and the relationship between the vehicle and the external environment. They cannot accurately and reliably assess driving safety and need to be improved. Summary of the invention

[0003] The purpose of the present invention is to improve the existing driving safety assessment method and to assess driving safety by comprehensively considering the driver's state, vehicle state and environmental state.

[0004] In order to achieve the above object, the present invention provides a driving safety assessment method, comprising:

[0005] When the vehicle activates the dynamic assessment system, if the vehicle meets the first condition, a safety assessment is performed;

[0006] The safety assessment includes: performing safety assessments on the vehicle state, the driver state and the environment state respectively, and determining whether the vehicle state meets a preset first safety threshold, whether the driver state meets a preset second safety threshold and whether the environment state meets a preset third safety threshold;

[0007] If any one of the vehicle state, driver state and environment state does not meet the corresponding threshold requirements, it is determined that the vehicle is in an unsafe driving state.

[0008] Further, it is determined whether the vehicle state meets the first safety threshold, specifically:

[0009] A first safety assessment value is obtained based on the respective weights and scores of vehicle speed, gear status, door status, steering wheel angle status, fault status, brake system status and engine system status. If the first safety assessment value is greater than a preset first safety threshold, it is determined that the vehicle is in an unsafe driving state.

[0010] Further, it is determined whether the driver's state meets a preset second safety threshold, specifically:

[0011] A second safety assessment value is obtained based on the respective weights and scores of the driver's eye closing time, yawning time, phone call time and inattention time. If the second safety assessment value is greater than a preset second safety threshold, it is determined that the vehicle is in an unsafe driving state.

[0012] Further, it is determined whether the environmental state meets the preset third safety threshold, specifically:

[0013] A third safety assessment value is obtained based on the respective weights and scores of the external environment and the wiper and washing system status. If the third safety assessment value is greater than a preset third safety threshold, it is determined that the vehicle is in an unsafe driving state.

[0014] Furthermore, the first condition includes: the vehicle approaches the warning line of the same lane and the speed is greater than or equal to the first speed and less than or equal to the second speed, the vehicle approaches a stationary target in the same lane and the speed is greater than or equal to the third speed and less than or equal to the fourth speed, the distance between the vehicle and the vehicle in front is less than a first threshold, and the vehicle deviates from the front wheel edge of the lane for the first time and then crosses the warning threshold line.

[0015] Furthermore, the dynamic evaluation system is activated when the driving state of the vehicle satisfies a second condition, wherein the second condition includes: the vehicle speed is greater than or equal to the fifth speed and less than or equal to the sixth speed, the vehicle gear is in D gear, and the lane curvature radius is greater than or equal to the first radius.

[0016] The present invention also discloses a driving safety evaluation device, comprising an activation module, an evaluation module and an output module;

[0017] The activation module is used to perform a safety assessment if the vehicle satisfies a first condition after the vehicle activates the dynamic assessment system;

[0018] The evaluation module, used for the safety evaluation, comprises: performing safety evaluation on the vehicle state, the driver state and the environment state respectively, and judging whether the vehicle state meets a preset first safety threshold, whether the driver state meets a preset second safety threshold and whether the environment state meets a preset third safety threshold;

[0019] The output module is used to determine that the vehicle is in an unsafe driving state if any one of the vehicle state, the driver state and the environment state does not meet the corresponding threshold requirements.

[0020] Furthermore, the first condition includes: the vehicle approaches the warning line of the same lane and the speed is greater than or equal to the first speed and less than or equal to the second speed, the vehicle approaches a stationary target in the same lane and the speed is greater than or equal to the third speed and less than or equal to the fourth speed, the distance between the vehicle and the vehicle in front is less than a first threshold, and the vehicle deviates from the front wheel edge of the lane for the first time and then crosses the warning threshold line.

[0021] The present invention also discloses a remote monitoring method for driving safety, which uses the above driving safety assessment method to determine whether a vehicle is in an unsafe driving state.

[0022] When it is determined that the vehicle is in an unsafe driving state, the dynamic assessment system sends the assessment results, driving data and monitoring data to the remote monitoring system and enables the server to send the assessment results to the mobile terminal bound to the vehicle.

[0023] The present invention also discloses a vehicle, characterized by a dynamic evaluation system;

[0024] The dynamic evaluation system is used to obtain the vehicle status, driver status and environmental status from the vehicle's driving information system, brake control system, wiper and washing system, vehicle exterior environment monitoring system, switch system, transmission control system, steering control system, vehicle anti-theft and door lock system, passive safety management system, engine management system and vehicle interior monitoring system;

[0025] When a safety assessment is required, the dynamic assessment system performs safety assessments on the vehicle state, driver state and environmental state respectively to determine whether the vehicle state meets the preset first safety threshold, whether the driver state meets the preset second safety threshold and whether the environmental state meets the preset third safety threshold; if any one of the vehicle state, driver state and environmental state does not meet the corresponding threshold requirements, it is determined that the vehicle is in an unsafe driving state.

[0026] Compared with the prior art, the driving safety assessment method, assessment device, remote monitoring method and vehicle of the embodiment of the present invention have the beneficial effect of comprehensively considering the driver's state, vehicle state and environmental state, and can accurately and reliably assess driving safety, thereby better ensuring driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a flow chart of a driving safety assessment method of the present invention;

[0028] Figure 2 is a schematic diagram of the first condition in a driving safety assessment method of the present invention;

[0029] Figure 3 It is a schematic diagram of dynamic evaluation weights and scores in a driving safety evaluation method of the present invention;

[0030] Figure 4 It is a structural schematic diagram of a driving safety assessment device of the present invention;

[0031] Figure 5 It is a flow chart of a driving safety assessment method of the present invention; DETAILED DESCRIPTION

[0032] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] Embodiment 1:

[0034] like Figure 1 As shown, a driving safety assessment method is applied to perform safety assessment on a vehicle in a driving state to determine whether the vehicle is in an unsafe driving state, including:

[0035] Step S1, when the vehicle activates the dynamic assessment system, if the vehicle meets the first condition, a safety assessment is performed;

[0036] Step S2, the safety assessment includes: performing safety assessments on the vehicle state, the driver state, and the environment state, respectively, to determine whether the vehicle state meets a preset first safety threshold, whether the driver state meets a preset second safety threshold, and whether the environment state meets a preset third safety threshold;

[0037] Step S3: If any one of the vehicle state, the driver state and the environment state does not meet the corresponding threshold requirements, it is determined that the vehicle is in an unsafe driving state.

[0038] When the vehicle is started, the dynamic assessment system is powered on and determines whether it needs to be activated based on the specific status of the vehicle. This is because the vehicle is in a safe driving state most of the time. If the dynamic assessment system continues to work, it will inevitably consume additional power and reduce the vehicle's driving performance. Therefore, corresponding judgment conditions need to be set to activate the dynamic assessment system.

[0039] In this embodiment, the dynamic evaluation system is activated when the driving state of the vehicle satisfies the second condition, wherein the second condition includes: the vehicle speed is greater than or equal to the fifth speed and less than or equal to the sixth speed, the vehicle gear is in D gear, and the lane curvature radius is greater than or equal to the first radius.

[0040] In this embodiment, the fifth speed is 30 km / h and the sixth speed is 150 km / h. The specific values ​​of the fifth speed and the sixth speed can be selected by those skilled in the art. The speed values ​​in this application are all recommended values ​​and are not further limitations on the technical solution of the present invention.

[0041] In this embodiment, the lane curvature radius is ≥ 250m. The lane curvature radii in this application are all recommended values ​​and are not further limitations on the technical solution of the present invention. The lane curvature radius can be obtained through vehicle-mounted radar or map data, which is a conventional technical means mastered by those skilled in the art.

[0042] In step S1, the dynamic assessment system is activated according to the second condition. After the system is activated, a safety assessment is performed when the vehicle meets the first condition. Figure 2The first condition includes: the vehicle approaches the warning line of the same lane and the speed is greater than or equal to the first speed and less than or equal to the second speed, the vehicle approaches a stationary target in the same lane and the speed is greater than or equal to the third speed and less than or equal to the fourth speed, the distance between the vehicle and the vehicle in front is less than the first threshold, and the vehicle deviates from the front wheel edge of the lane and will cross the warning threshold line after the first time.

[0043] exist Figure 2 In the figure, 1 is the visible lane marking; 2 is the alarm threshold allowed area; 3 is the earliest alarm line (20 cm from the center of the lane line); 4 is the latest alarm line (30 cm from the lane line); 5 is the no-alarm area; 6 is the alarm threshold; 7 is TTC (the distance to the target vehicle); 8 is the stationary target; and 9 is the distance to the stationary target in the lane.

[0044] In this embodiment, if a target vehicle is detected, it moves to the earliest warning line ( Figure 2 3), the vehicle speed is between 30km / h and 150km / h (recommended value); if the earliest alarm line is used, it is easy to trigger dynamic evaluation, and the trigger alarm line can be adjusted, but it cannot exceed the latest alarm line ( Figure 2 4); the distance to the stationary target in the same lane is less than the set value ( Figure 2 9), the vehicle speed is between 30km / h and 85km / h (recommended value); the TTC between the vehicle and the target vehicle is less than the set value ( Figure 2 7). The vehicle will cross the warning threshold line ( Figure 2 Middle 2 area).

[0045] In step S2, the safety assessment includes three parts, each of which is independent of each other. If any one of them does not meet the requirements, the vehicle is in an unsafe driving state.

[0046] In this embodiment, refer to Figure 3 , determine whether the vehicle state meets the first safety threshold, specifically:

[0047] A first safety assessment value is obtained based on the respective weights and scores of vehicle speed, gear status, door status, steering wheel angle status, fault status, brake system status and engine system status. If the first safety assessment value is greater than a preset first safety threshold, it is determined that the vehicle is in an unsafe driving state.

[0048] In this embodiment, the first safety assessment value is illustrated by an example. When the vehicle speed is too fast and (A1*B1*C1+A1*B2*C2+…+A1*B7*C7)>D1, the system determines that the current vehicle state is unsafe, and the system pushes it to the relatives and friends APP to prompt the current driver that the speed is too fast.

[0049] In this embodiment, refer to Figure 3 , determine whether the driver's state meets the preset second safety threshold, specifically:

[0050] A second safety assessment value is obtained based on the respective weights and scores of the driver's eye closing time, yawning time, phone call time and inattention time. If the second safety assessment value is greater than a preset second safety threshold, it is determined that the vehicle is in an unsafe driving state.

[0051] In this embodiment, the second safety assessment value is illustrated by an example. When the driver has poor memory, closes his eyes for more than a threshold, makes a phone call, or yawns, so that (A2*B8*C8)>D2, the system determines that the current vehicle status is unsafe, and the system pushes it to the relatives and friends APP to remind the current driver that he is driving fatigued.

[0052] In this embodiment, refer to Figure 3 , determine whether the environmental state meets the preset third safety threshold, specifically:

[0053] A third safety assessment value is obtained based on the respective weights and scores of the external environment and the wiper and washing system status. If the third safety assessment value is greater than a preset third safety threshold, it is determined that the vehicle is in an unsafe driving state.

[0054] In this embodiment, the third safety assessment value is illustrated by an example. When driving in the rain and the driver does not turn on the wipers, so that (A3*B9*C9+A3*B10*C10)>D3, the system determines that the current vehicle state is unsafe, and the system pushes it to the relatives and friends APP to prompt the current driver's driving operation is not standardized.

[0055] In summary, the driving safety assessment method of the present invention comprehensively considers the driver's state, vehicle state and environmental state, and can accurately and reliably assess driving safety to better ensure driving safety.

[0056] Embodiment 2:

[0057] A driving safety assessment device includes an activation module 101, an assessment module 102 and an output module 103;

[0058] The activation module 101 is used to perform a safety assessment if the vehicle satisfies a first condition after the vehicle activates the dynamic assessment system;

[0059] The evaluation module 102, used for the safety evaluation, includes: performing safety evaluation on the vehicle state, the driver state and the environment state respectively, and determining whether the vehicle state meets a preset first safety threshold, whether the driver state meets a preset second safety threshold and whether the environment state meets a preset third safety threshold;

[0060] The output module 103 is used to determine that the vehicle is in an unsafe driving state if any one of the vehicle state, the driver state and the environment state does not meet the corresponding threshold requirements.

[0061] In this embodiment, the first condition includes: the vehicle approaches the warning line of the same lane and the speed is greater than or equal to the first speed and less than or equal to the second speed, the vehicle approaches a stationary target in the same lane and the speed is greater than or equal to the third speed and less than or equal to the fourth speed, the distance between the vehicle and the vehicle in front is less than the first threshold, and the vehicle deviates from the front wheel edge of the lane for the first time and then crosses the warning threshold line.

[0062] Embodiment 2 is written based on Embodiment 1, and those skilled in the art can implement the driving safety assessment device according to the technical content disclosed in Embodiment 1. At the same time, the description and limitation of the assessment method in Embodiment 1 can also be used in Embodiment 2, so it will not be repeated in Embodiment 2.

[0063] Embodiment 3:

[0064] A remote monitoring method for driving safety, using the driving safety assessment method described in Example 1 to determine that a vehicle is in an unsafe driving state,

[0065] When it is determined that the vehicle is in an unsafe driving state, the dynamic assessment system sends the assessment results, driving data and monitoring data to the remote monitoring system and enables the server to send the assessment results to the mobile terminal bound to the vehicle.

[0066] In this embodiment, researchers found that reminders sent by the vehicle itself often have little binding force on drivers, and they may ignore the wrong reminders sent by the vehicle. Therefore, it is necessary to improve the existing method of reflecting drivers and enhance the binding force of reminders, so that drivers can adjust their driving status in a timely and effective manner and improve the reliability of driving safety.

[0067] In this embodiment, after the dynamic assessment system assesses the current safety level, it sends the result and driving data to the remote monitoring system, which reports it to the backend server through the 4G or 5G network. According to the safety level set by the user, when the assessment result is unsafe or the set value of a certain safety assessment dimension exceeds the set threshold, the remote monitoring system pushes it to relatives and friends through the APP.

[0068] Embodiment 4:

[0069] Reference Figure 5 ,The present invention also discloses a vehicle, comprising: a dynamic evaluation system;

[0070] The dynamic evaluation system is used to obtain the vehicle status, driver status and environmental status from the vehicle's driving information system, brake control system, wiper and washing system, vehicle exterior environment monitoring system, switch system, transmission control system, steering control system, vehicle anti-theft and door lock system, passive safety management system, engine management system and vehicle interior monitoring system;

[0071] When a safety assessment is required, the dynamic assessment system performs safety assessments on the vehicle state, driver state and environmental state respectively to determine whether the vehicle state meets the preset first safety threshold, whether the driver state meets the preset second safety threshold and whether the environmental state meets the preset third safety threshold; if any one of the vehicle state, driver state and environmental state does not meet the corresponding threshold requirements, it is determined that the vehicle is in an unsafe driving state.

[0072] In this embodiment, the vehicle also includes some other systems, including: a low-voltage power management module, a driving information system, a personalized setting system, etc.

[0073] Those skilled in the art can set the dynamic assessment system of the present invention in the vehicle to implement the driving safety assessment method and remote monitoring method of the present invention. Those skilled in the art know how to obtain the required information from each system, which will not be described in detail here.

[0074] In summary, the embodiments of the present invention provide a driving safety assessment method, assessment device, remote monitoring method and vehicle, which have the beneficial effect of comprehensively considering the driver's state, vehicle state and environmental state, and can accurately and reliably assess driving safety, thereby better ensuring driving safety.

[0075] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A driving safety assessment method, characterized in that: include: When the vehicle activates the dynamic assessment system, if the vehicle meets the first condition, a safety assessment is performed; The safety assessment includes: performing safety assessments on the vehicle state, the driver state and the environmental state respectively, and determining whether the vehicle state satisfies a preset first safety threshold, whether the driver state satisfies a preset second safety threshold and whether the environmental state satisfies a preset third safety threshold; wherein, determining whether the vehicle state satisfies the first safety threshold is specifically as follows: obtaining a first safety assessment value according to the respective weights and scores of the vehicle speed, gear state, door state, steering wheel angle state, fault state, brake system state and engine system state; if the first safety assessment value is greater than the preset first safety threshold, then determining that the vehicle is in an unsafe driving state. state; the determination of whether the driver state meets the preset second safety threshold is specifically: a second safety evaluation value is obtained according to the respective weights and scores of the driver's eye closing time, yawning time, phone call time and inattention time; if the second safety evaluation value is greater than the preset second safety threshold, it is determined that the vehicle is in an unsafe driving state; the determination of whether the environmental state meets the preset third safety threshold is specifically: a third safety evaluation value is obtained according to the respective weights and scores of the external environment and the wiper and washing system state; if the third safety evaluation value is greater than the preset third safety threshold, it is determined that the vehicle is in an unsafe driving state; If any one of the vehicle state, driver state and environment state does not meet the corresponding threshold requirements, it is determined that the vehicle is in an unsafe driving state.

2. A driving safety assessment method according to claim 1, characterized in that: The first condition includes: the vehicle approaches the warning line of the same lane and the speed is greater than or equal to the first speed and less than or equal to the second speed, the vehicle approaches a stationary target in the same lane and the speed is greater than or equal to the third speed and less than or equal to the fourth speed, the distance between the vehicle and the vehicle in front is less than the first threshold, and the vehicle deviates from the front wheel edge of the lane for the first time and then moves to the warning threshold line.

3. The driving safety assessment method according to claim 1, characterized in that: The dynamic assessment system is activated when the driving state of the vehicle satisfies a second condition, wherein the second condition includes: the vehicle speed is greater than or equal to the fifth speed and less than or equal to the sixth speed, the vehicle gear is in D gear, and the lane curvature radius is greater than or equal to the first radius.

4. A driving safety assessment device, characterized in that: It includes an activation module, an evaluation module and an output module; The activation module is used to perform a safety assessment if the vehicle satisfies a first condition after the vehicle activates the dynamic assessment system; The evaluation module, used for the safety evaluation, includes: performing safety evaluations on the vehicle state, the driver state and the environment state respectively, and judging whether the vehicle state satisfies a preset first safety threshold, whether the driver state satisfies a preset second safety threshold and whether the environment state satisfies a preset third safety threshold; wherein, judging whether the vehicle state satisfies the first safety threshold is specifically: obtaining a first safety evaluation value according to the weights and scores of the vehicle speed, the gear state, the door state, the steering wheel angle state, the fault state, the brake system state and the engine system state; if the first safety evaluation value is greater than the preset first safety threshold, if it is greater than, then it is determined that the vehicle is in an unsafe state. the vehicle is in an unsafe driving state; the determination of whether the driver's state meets the preset second safety threshold is specifically: a second safety evaluation value is obtained according to the respective weights and scores of the driver's eye closing time, yawning time, phone call time and inattention time; if the second safety evaluation value is greater than the preset second safety threshold, it is determined that the vehicle is in an unsafe driving state; the determination of whether the environmental state meets the preset third safety threshold is specifically: a third safety evaluation value is obtained according to the respective weights and scores of the external environment and the wiper and washing system state; if the third safety evaluation value is greater than the preset third safety threshold, it is determined that the vehicle is in an unsafe driving state; The output module is used to determine that the vehicle is in an unsafe driving state if any one of the vehicle state, the driver state and the environment state does not meet the corresponding threshold requirements.

5. The driving safety assessment device according to claim 4, characterized in that: The first condition includes: the vehicle approaches the warning line of the same lane and the speed is greater than or equal to the first speed and less than or equal to the second speed, the vehicle approaches a stationary target in the same lane and the speed is greater than or equal to the third speed and less than or equal to the fourth speed, the distance between the vehicle and the vehicle in front is less than the first threshold, and the vehicle deviates from the front wheel edge of the lane for the first time and then moves to the warning threshold line.

6. A remote monitoring method for driving safety, characterized in that: Applying the driving safety assessment method described in any one of claims 1 to 6 to determine that the vehicle is in an unsafe driving state, When it is determined that the vehicle is in an unsafe driving state, the dynamic assessment system sends the assessment results, driving data and monitoring data to the remote monitoring system and enables the server to send the assessment results to the mobile terminal bound to the vehicle.

7. A vehicle, characterized in that: include: Dynamic evaluation system; The dynamic evaluation system is used to obtain the vehicle status, driver status and environmental status from the vehicle's driving information system, brake control system, wiper and washing system, vehicle exterior environment monitoring system, switch system, transmission control system, steering control system, vehicle anti-theft and door lock system, passive safety management system, engine management system and vehicle interior monitoring system; When a safety assessment is required, the dynamic assessment system performs safety assessments on the vehicle state, the driver state and the environmental state respectively to determine whether the vehicle state meets a preset first safety threshold, whether the driver state meets a preset second safety threshold and whether the environmental state meets a preset third safety threshold; If any one of the vehicle state, the driver state and the environmental state does not meet the corresponding threshold requirements, it is determined that the vehicle is in an unsafe driving state, wherein the determination of whether the vehicle state meets the first safety threshold is specifically: a first safety assessment value is obtained according to the weights and scores of the vehicle speed, gear state, door state, steering wheel angle state, fault state, brake system state and engine system state, and if the first safety assessment value is greater than the preset first safety threshold, if it is greater than, it is determined that the vehicle is in an unsafe driving state; the determination of whether the driver state meets the preset second safety threshold is specifically: a second safety assessment value is obtained according to the weights and scores of the driver's eye closing time, yawning time, phone call time and inattention time, and if the second safety assessment value is greater than the preset second safety threshold, it is determined that the vehicle is in an unsafe driving state; the determination of whether the environmental state meets the preset third safety threshold is specifically: a third safety assessment value is obtained according to the weights and scores of the external environment and the wiper and washing system state, and if the third safety assessment value is greater than the preset third safety threshold, if it is greater than, it is determined that the vehicle is in an unsafe driving state.

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