Active safety assistance system and method for rear collision of motorcycle

Abstract

The invention belongs to the technical field of intelligent driving control, and particularly relates to an active safety assistance system and method for rear collision of a motorcycle, and the method comprises the following steps: S1, obtaining the shortest response time T1 of a driver and the longest response time T2 of the driver; s2, acquiring a speed value V0 of the vehicle; s3, recognizing a backward target of the vehicle, and obtaining the speed V1 of the backward target and the distance S between the vehicle and the backward target; s4, calculating early warning collision time T according to the vehicle speed V0, the backward target speed V1 and the distance S between the vehicle and the backward target; s5, T is compared with the value between T1 and T2, and Tgt is obtained; when T2, the risk degree is determined to be low; when T1lt; tlt; when T2, judging the risk degree; the device solves the problems that due to limitation of a motorcycle, the backward collision risk, severity and controllability are poor compared with those of an automobile at present, and a good method for assisting a driver in avoiding the risk is lacked in the industry.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent driving control, and particularly relates to a system and method for active safety assistance in rear collisions of motorcycles. Background Art

[0002] The driving risks of motorcycles, especially collision risks, have always been significantly higher than those of cars. Due to the limitations of motorcycles themselves, the rear collision risks, severity, and controllability are inferior to those of cars. The industry lacks good methods to assist drivers in avoiding such risks. The present invention well solves the above pain points, and instead of traditional passive safety strategies, it provides active safety assistance for such risks, greatly helping drivers escape from such risks. Summary of the Invention

[0003] The purpose of the present invention is to provide a system and method for active safety assistance in rear collisions of motorcycles to solve the problems raised in the above background art.

[0004] To solve the above technical problems, the present invention provides the following technical solutions: A system and method for active safety assistance in rear collisions of motorcycles, including the following steps: Step S1, obtain the shortest reaction time T1 and the longest reaction time T2 of the driver; Step S2, obtain the speed value V0 of the vehicle itself; Step S3, identify the rear target of the vehicle, and obtain the speed V1 of the rear target and the distance S between the vehicle itself and the rear target; Step S4, calculate the warning collision time T according to the vehicle speed V0 of the vehicle itself, the speed V1 of the rear target, and the distance S between the vehicle itself and the rear target; Step S5, compare the numerical values of T with T1 and T2. When T > T2, determine that the risk level is low; when T1 < T < T2, determine that the risk level is medium; when 0 < T < T1, determine that the risk level is high; Step S6, according to Step S5, when the risk level is low, the vehicle control module does not perform collision warning intervention processing; Step S7, according to Step S5, when the risk level is medium, the vehicle control module enters the power priority mode; Step S8, according to Step S5, when the risk level is high, the vehicle control module enters the power limit release mode, allowing the driver to accelerate and escape; Step S9, repeat Steps S1 to S5. When the vehicle leaves the high-risk area, restore the mode before the system intervention.

[0005] The present invention further explains that in Step S1, the shortest reaction time and the longest reaction time of the driver are preset, and the preset complies with the following conditions: 0.3s < T1 < T2 < 1s.

[0006] The present invention further explains that in Step S4, T is calculated as follows:

[0007] The present invention further explains that in step S6, when the vehicle is in the standard comfort mode of non-power priority and power limit release, it includes: displaying to the user that the vehicle is in the standard comfort mode without additional alarms; the performance of the power system is restricted between 0% and 70%, with economic energy conservation as the priority; the maximum speed is limited to about 130 km / h.

[0008] The present invention further explains that in step S7, the vehicle power priority mode includes: displaying to the user that the vehicle has switched to the power priority mode, accompanied by collision warning; the upper limit of the power system performance is modulated to about 90%, with power performance as the priority; the maximum speed is limited to about 200 km / h.

[0009] The present invention further explains that in step S8, the vehicle power limit release mode includes: displaying to the user that the vehicle has entered the power limit release mode, accompanied by a higher-level collision warning; the upper limit of the power system performance is modulated to about 100% without any further restrictions; the maximum speed limit is completely removed.

[0010] The present invention further explains that it includes a risk identification module, a risk determination module, and a control module; the risk identification module, the risk determination module, and the control module are electrically connected to each other. The risk identification module is used to monitor in real time whether there are backward risk targets for the vehicle through a judgment method that fuses multiple types of sensors. The risk determination module is used to determine the risk level, and the control module is used to select response strategies and auxiliary strategies according to the risk level.

[0011] The present invention further explains that the risk identification module includes a radar identification unit and a vision identification unit; the radar identification unit is used to identify risk targets through radar technology, and the vision identification unit is used to identify risk targets by performing real-time monitoring through a camera.

[0012] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: Through a judgment method that fuses multiple types of sensors, the present invention monitors in real time whether there are backward risk targets for the vehicle, and dynamically selects response strategies and auxiliary strategies according to the risk level, resulting in better use effects. Through the calculation of the time to collision and the time-to-collision segmentation strategy, it can not only judge reasonable warning and auxiliary timing based on the driver's reaction time, but also reduce unnecessary ineffective alarm information and low-risk targets that waste the driver's attention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation to the present invention.

[0014] In the drawings:

[0015] Figure 1It is a schematic diagram of the steps of the active safety assistance method for rear collisions of motorcycles according to the present invention;

[0016] Figure 2 It is a schematic diagram of the module connection relationship of the active safety assistance system for rear collisions of motorcycles according to the present invention. Specific Embodiments

[0017] The technical solution of the present invention will be further described in detail and non - restrictively below in conjunction with the preferred embodiments and their accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0018] Please refer to Figure 1 - Figure 2 , the present invention provides a technical solution: a system and method for active safety assistance for rear collisions of motorcycles, including the following steps:

[0019] Step S1: Obtain the shortest reaction time T1 and the longest reaction time T2 of the driver;

[0020] Step S2: Obtain the speed value V0 of the vehicle;

[0021] Step S3: Identify the rear - facing target of the vehicle, and obtain the speed V1 of the rear - facing target and the distance S between the vehicle and the rear - facing target;

[0022] Step S4: Calculate the warning collision time T based on the vehicle speed V0, the rear - facing target speed V1, and the distance S between the vehicle and the rear - facing target;

[0023] Step S5: Compare the value of T with the values between T1 and T2. When T > T2, it is determined that the risk level is low; when T1 < T < T2, it is determined that the risk level is medium; when 0 < T < T1, it is determined that the risk level is high;

[0024] Step S6: According to Step S5, when the risk level is low, the vehicle control module does not perform collision warning intervention processing;

[0025] Step S7: According to Step S5, when the risk level is medium, the vehicle control module enters the power - priority mode;

[0026] Step S8: According to Step S5, when the risk level is high, the vehicle control module enters the power - limit - release mode, allowing the driver to accelerate and escape;

[0027] Step S9: Repeat Steps S1 to S5. When the vehicle leaves the high - risk interval, restore the mode before the system intervention.

[0028] In step S1, the shortest reaction time and the longest reaction time of the driver are preset, and the preset follows the following conditions:

[0029] 0.3s < T1 < T2 < 1s.

[0030] In step S4, T is calculated as follows:

[0031]

[0032] In step S6, the standard comfort mode in which the vehicle is in non-power priority and power limit release includes:

[0033] Display to the user that the vehicle is in the standard comfort mode without additional alarms;

[0034] The performance of the power system is restricted between 0% and 70%, with economic energy conservation as the priority;

[0035] The maximum speed is limited to about 130 km / h.

[0036] In step S7, the vehicle power priority mode includes:

[0037] Display to the user that the vehicle has switched to the power priority mode, accompanied by a collision warning;

[0038] The upper limit of the power system performance is modulated to about 90%, with power performance as the priority;

[0039] The maximum speed is limited to about 200 km / h.

[0040] In step S8, the vehicle power limit release mode includes:

[0041] Display to the user that the vehicle has entered the power limit release mode, accompanied by a higher-level collision warning;

[0042] The upper limit of the power system performance is modulated to about 100% without further restrictions;

[0043] The maximum speed limit is completely removed.

[0044] It includes a risk identification module, a risk determination module, and a control module;

[0045] The risk identification module, the risk determination module, and the control module are electrically connected to each other. The risk identification module is used to monitor in real time whether there are backward risk targets on the vehicle through a judgment method of multi-class sensor fusion. The risk determination module is used to determine the risk level, and the control module is used to select response strategies and auxiliary strategies according to the risk level.

[0046] The risk identification module includes a radar identification unit and a vision identification unit;

[0047] The radar recognition unit is used to identify risk targets through radar technology, and the vision recognition unit is used to conduct real-time monitoring through a camera to identify risk targets.

[0048] Through the judgment method of multi-class sensor fusion, it can monitor in real time whether there are backward risk targets for the vehicle, and dynamically select response strategies and auxiliary strategies according to the risk level, with better use effect. Through the calculation of the time to collision and the time-to-collision segmentation strategy, it can not only judge reasonable warning and auxiliary timing according to the driver's reaction time, but also reduce unnecessary invalid alarm information and low-risk targets that waste the driver's attention.

[0049] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0050] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An active safety assistance method for rear collisions of a motorcycle, characterized in that: It includes the following steps: Step S1: Obtain the shortest reaction time T1 and the longest reaction time T2 of the driver; Step S2: Obtain the speed value V0 of the vehicle; Step S3: Identify the rear target of the vehicle, and obtain the speed V1 of the rear target and the distance S between the vehicle and the rear target; Step S4: Calculate the warning collision time T based on the vehicle speed V0, the rear target speed V1, and the distance S between the vehicle and the rear target; Step S5: Compare the value of T with the values between T1 and T2. When T>T2, it is determined that the risk level is low; When T1<T<T2, it is determined that the risk level is medium; When 0<T<T1, it is determined that the risk level is high; Step S6: According to Step S5, when the risk level is low, the vehicle control module does not perform collision warning intervention processing; Step S7: According to Step S5, when the risk level is medium, the vehicle control module enters the power priority mode; Step S8: According to Step S5, when the risk level is high, the vehicle control module enters the power limit release mode, allowing the driver to accelerate and escape; Step S9: Repeat Steps S1 to S5. When the vehicle leaves the high-risk area, restore the mode before the system intervention.

2. The active safety assistance method for rear collision of a motorcycle according to claim 1, wherein: In Step S1, the shortest reaction time and the longest reaction time of the driver are preset, and the preset follows the following conditions: 0.3s<T1<T2<1s.

3. A method for active safety assistance in rear collisions of a motorcycle according to claim 1, characterized in that: In Step S4, T is calculated as follows:

4. A method for active safety assistance in the rear collision of a motorcycle according to claim 1, characterized in that: In Step S6, the standard comfort mode of the vehicle in non-power priority and power limit release includes: Display to the user that the vehicle is in the standard comfort mode without additional alarms; The performance of the power system is restricted between 0% and 70%, with economic energy conservation as the priority; The maximum speed is limited to about 130 km / h.

5. A method for active safety assistance in rear collisions of motorcycles according to claim 1, characterized in that: In Step S7, the vehicle power priority mode includes: Display to the user that the vehicle has switched to the power priority mode, accompanied by a collision warning; The upper limit of the power system performance is modulated to about 90%, with power performance as the priority; The maximum speed is limited to about 200 km / h.

6. A method for active safety assistance in the rear collision of a motorcycle according to claim 1, characterized in that: In Step S8, the vehicle power limit release mode includes: Display to the user that the vehicle has entered the power limit release mode, accompanied by a higher-level collision warning; The upper limit of the power system performance is modulated to about 100% without restrictions; The maximum speed limit is completely lifted.

7. An active safety assistance system for rear collisions of a motorcycle, characterized in that: It includes a risk identification module, a risk determination module, and a control module; The risk identification module, the risk determination module, and the control module are electrically connected to each other. The risk identification module is used to judge whether there is a rear risk target for the vehicle in real time through a multi-sensor fusion judgment method. The risk determination module is used to determine the risk level. The control module is used to select coping strategies and auxiliary strategies according to the risk level.

8. The active safety assistance system for rear collision of a motorcycle according to claim 7, characterized in that: The risk identification module includes a radar identification unit and a vision identification unit; The radar identification unit is used to identify risk targets through radar technology, and the vision identification unit is used to perform real-time monitoring through a camera to identify risk targets.

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