CN114220295B - Traffic early warning system, control method, storage medium, control device, and vehicle - Google Patents
Traffic early warning system, control method, storage medium, control device, and vehicle Download PDFInfo
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- CN114220295B CN114220295B CN202111324862.6A CN202111324862A CN114220295B CN 114220295 B CN114220295 B CN 114220295B CN 202111324862 A CN202111324862 A CN 202111324862A CN 114220295 B CN114220295 B CN 114220295B
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
- G08G1/166—Anti-collision systems for active traffic, e.g. moving vehicles, pedestrians, bikes
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/056—Detecting movement of traffic to be counted or controlled with provision for distinguishing direction of travel
Abstract
The embodiment of the application discloses traffic early warning system, storage medium, controlling means and vehicle, wherein traffic early warning system includes: wearable unit, interactive element and vehicle-mounted unit, wearable unit can wear on other weak traffic participants such as pedestrian, vehicle-mounted unit is used for setting up on the vehicle, first speed detection module and the orientation module on wearable unit can detect respectively and acquire weak traffic participant's speed of travel and position, vehicle-mounted unit's second speed detection module and direction of travel detection module can learn the direction of travel and the speed of vehicle, further processing module can confirm whether there is the collision risk between vehicle and the wearable unit, when there is the collision risk, wearable unit's alarm module can report to the police, the alarm of whistling that has replaced vehicle among the traditional technology, make the alarm more direct effect on weak traffic participant, the injured probability of weak traffic participant has been reduced, the frequency that the traffic accident takes place has been reduced.
Description
Technical Field
The embodiment of the application relates to the technical field of vehicles, in particular to a traffic early warning system, a control method of the traffic early warning system, a computer readable storage medium, a control device and a vehicle.
Background
The current warning mode that the car is close to the weak traffic participant mainly relies on loudspeaker and light, and loudspeaker has become the important source of urban area noise pollution on the one hand, and on the other hand, the warning of loudspeaker and light does not play a role to disabled person especially deaf person, blind person, produces the traffic accident easily.
Disclosure of Invention
The present invention has been made to solve at least one of the problems occurring in the prior art or the related art.
To this end, a first aspect of the invention provides a traffic warning system.
The invention provides a traffic early warning method in a second aspect.
A third aspect of the invention provides another traffic warning method.
In view of this, according to a first aspect of the embodiments of the present application, a traffic early warning system is provided, including:
the wearable unit comprises a first speed detection module, an alarm module and a positioning module, wherein the first speed detection module is used for detecting first moving speed information of the wearable unit, and the positioning module is used for acquiring position information of the positioning module;
an interaction unit connected to the wearable unit;
the vehicle-mounted unit is arranged on a vehicle and connected to the interaction unit, the vehicle-mounted unit comprises a second speed detection module, a traveling direction detection module and a processing module, the second speed detection module is used for detecting second moving speed information of the vehicle, the traveling direction detection module is used for detecting the traveling direction information of the vehicle, the processing module is used for determining whether collision risks exist between the vehicle and the wearable unit or not based on the first moving speed information, the position information, the second moving speed information and the traveling direction information, and generating early warning signals under the condition that the collision risks exist, and the warning module is used for responding to the early warning signals to give a warning.
In one possible embodiment, the interaction unit includes: the first server is connected to the vehicle-mounted unit; a second server connected to the first server and the wearable unit; the alarm module comprises an audible and visual alarm and/or a vibration alarm.
According to a second aspect of the embodiments of the present application, a traffic early warning method is provided, which is applied to the traffic early warning system according to any one of the above technical solutions, and is used for the on-board unit, where the traffic early warning method includes:
acquiring the first moving speed information, the position information, the second moving speed information and the traveling direction information;
determining whether there is a risk of collision between the on-board unit and the wearable unit based on the first moving speed information, the location information, the second moving speed information, and the traveling direction information;
and sending out an early warning signal to the interaction unit under the condition that the collision risk exists.
In one possible embodiment, the step of acquiring the first moving speed information, the position information, the second moving speed information, and the traveling direction information includes:
acquiring detection results of the second speed detection module and the advancing direction detection module, and acquiring second moving speed information and advancing direction information;
receiving the first moving speed information and the position information transmitted through the interaction unit at a first frequency;
wherein the first frequency is inversely related to the first moving speed information.
In one possible embodiment, the step of determining whether there is a risk of collision between the in-vehicle unit and the wearable unit based on the first moving speed information, the location information, the second moving speed information, and the traveling direction information includes:
determining a vehicle type of a vulnerable traffic participant wearing the wearable unit based on the first movement speed information;
pre-storing a first action track of the vulnerable traffic participant based on the carrier type, first moving speed information and the position information;
determining a second action trajectory of the vehicle based on the second moving speed information and the traveling direction information;
and judging whether the collision risk exists or not based on the first action track, the second action track and the carrier type.
In one possible embodiment, the step of determining the vehicle type of the vulnerable traffic participant wearing the wearable unit based on the first movement speed information comprises:
judging the type of the carrier to be a walking mode under the condition that the first moving speed information is less than or equal to a first threshold value;
and under the condition that the first moving speed information is larger than a first threshold value, judging that the vehicle type is a double-wheel vehicle mode.
In a possible embodiment, the vehicle type, the first moving speed information and the position information are used for pre-storing a first action track of the vulnerable traffic participant;
determining the first action trajectory from the first moving speed information with the position information as an origin and a direction of 360 ° around the origin as a traveling direction when the vehicle type is the walking mode;
and under the condition that the vehicle type is the double-wheel vehicle mode, determining the moving direction of the vehicle based on the first moving information and the position information, and determining the first action track through the first moving speed information by taking the position information as an original point and taking areas of 90 degrees at two sides of the moving direction of the vehicle as directions.
In a possible embodiment, the step of determining whether the collision risk exists based on the first action track, the second action track and the vehicle type includes:
if the vehicle type is the walking mode and the first and second motion trajectories intersect;
taking a track which is crossed in the first action track and the second action track as a target track;
judging whether a traffic signal lamp on the target track and a traffic signal lamp in the second action track have signal difference or not, and if yes, judging that no collision risk exists;
if not, judging whether the target track has the separator or not, and if not, judging that the collision risk exists;
if yes, judging whether the isolator has a gap, and if yes, judging that the collision risk exists;
if not, whether the vehicle and the wearable unit are positioned on two sides of the partition or not is judged, if yes, no collision risk exists, and if not, a collision risk exists.
In a possible implementation manner, the step of determining whether the collision risk exists based on the first action track, the second action track and the vehicle type further includes:
when the vehicle type is a two-wheel vehicle mode and the first action track and the second action track intersect;
taking a track which is crossed in the first action track and the second action track as a target track;
if not, judging whether the target track has the separator or not, and if not, judging that the collision risk exists;
if yes, judging whether the isolator has a gap, and if yes, judging that the collision risk exists;
if not, whether the vehicle and the wearable unit are positioned on two sides of the partition or not is judged, if yes, no collision risk exists, and if not, a collision risk exists.
According to a second aspect of the embodiments of the present application, a traffic early warning method is provided, which is applied to the traffic early warning system of any of the above technical solutions, and is used for the wearable unit, and the traffic early warning method includes:
and responding to the early warning signal, and controlling the alarm module to be started.
Compared with the prior art, the invention at least comprises the following beneficial effects: the traffic early warning system provided by the embodiment of the application comprises a wearable unit, an interaction unit and an on-board unit, the wearable unit can be worn on pedestrians and other vulnerable traffic participants, the on-board unit is arranged on a vehicle, a first speed detection module and a positioning module on the wearable unit can respectively detect and acquire the traveling speed and the position of the vulnerable traffic participants, a second speed detection module and a traveling direction detection module of the on-board unit can acquire the traveling direction and the speed of the vehicle, a further processing module can determine whether collision risks exist between the vehicle and the wearable unit, when the collision risks exist, an alarm module of the wearable unit can give an alarm, whistle alarms of the vehicle in the traditional technology are replaced, the alarms can more directly act on the vulnerable traffic participants, the probability of the vulnerable traffic participants is reduced, and the frequency of traffic accidents is reduced.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to refer to like parts throughout the drawings.
In the drawings:
fig. 1 is a block diagram of a traffic warning system according to an embodiment of the present disclosure;
FIG. 2 is a flow chart illustrating exemplary steps of a traffic warning method according to an embodiment of the present disclosure;
FIG. 3 is a schematic view of a first motion trajectory of a vulnerable traffic participant in a walking mode according to an exemplary embodiment of the present disclosure;
FIG. 4 is a schematic view of a first motion trajectory of a vulnerable traffic participant when the vehicle type of one embodiment of the present application is a two-wheel vehicle mode;
fig. 5 is a flowchart illustrating another exemplary traffic warning method according to an embodiment of the present disclosure.
Detailed Description
In order to better understand the technical solutions of the embodiments of the present application, the following detailed descriptions are provided with accompanying drawings and specific embodiments, and it should be understood that the specific features in the embodiments and examples of the present application are detailed descriptions of the technical solutions of the embodiments of the present application, but not limitations of the technical solutions of the present application, and the technical features in the embodiments and examples of the present application may be combined with each other without conflict.
According to a first aspect of an embodiment of the present application, a traffic early warning system is provided, including: the wearable unit comprises a first speed detection module, an alarm module and a positioning module, wherein the first speed detection module is used for detecting first moving speed information of the wearable unit, and the positioning module is used for acquiring position information of the positioning module; the interaction unit is connected with the wearable unit; the vehicle-mounted unit is used for being arranged on a vehicle and connected to the interaction unit, and comprises a second speed detection module, a traveling direction detection module and a processing module, wherein the second speed detection module is used for detecting second moving speed information of the vehicle, the traveling direction detection module is used for detecting traveling direction information of the vehicle, the processing module is used for determining whether collision risks exist between the vehicle and the wearable unit or not based on the first moving speed information, the position information, the second moving speed information and the traveling direction information, and generating early warning signals under the condition that the collision risks exist, and the warning module is used for responding to the early warning signals to give warnings.
The traffic early warning system that this application embodiment provided has included wearable unit, interactive unit and on-vehicle unit, wearable unit can wear on other weak traffic participants such as pedestrian, on-vehicle unit is used for setting up on the vehicle, first speed detection module and the orientation module on the wearable unit can detect respectively and acquire weak traffic participant's speed of advance and position, on-vehicle unit's second speed detection module and direction of advance detection module can learn the direction of advance and the speed of vehicle, further processing module can confirm whether there is the collision risk between vehicle and the wearable unit, when there is the collision risk, wearable unit's alarm module can report to the police, the alarm of whistling of vehicle among the traditional technology has been replaced, make the more direct effect of alarm on weak traffic participant, noise pollution has been reduced, weak traffic participant's injured probability has been reduced, the frequency that the traffic accident takes place has been reduced.
The wearable unit comprises an interaction unit, a processing module and a processing module, wherein the interaction unit is used for communicating between the vehicle-mounted unit and the wearable unit, the processing module of the vehicle-mounted unit can acquire first moving speed information and position information of the wearable unit through the interaction unit, meanwhile, the wearable unit can acquire early warning signals sent by the vehicle-mounted unit through the interaction unit, and the processing module is arranged in the vehicle-mounted unit, can reduce the size of the wearable unit and is more suitable for being worn by weak traffic participants.
Wearable unit can be the module of being convenient for wear such as bracelet, badge, and the concrete style of wearable unit does not do the restriction in this application.
In some examples, the interaction unit includes: the first server is connected to the vehicle-mounted unit; the second server is connected with the first server and the wearable unit; the alarm module comprises an audible and visual alarm and/or a vibration alarm.
Considering that the wearable unit and the vehicle-mounted unit may be devices generated by different manufacturers, the interaction unit may include a first server and a second server, and the first server and the second server are configured to communicate with each other, so that different types of wearable units and different types of vehicle-mounted units can interact and communicate with each other, and stability and reliability of communication are guaranteed.
The alarm module comprises an audible and visual alarm and/or a vibration alarm, so that the alarm mode of the alarm module is more diversified, and the alarm module is favorable for reminding the vulnerable traffic participants, and is particularly favorable for attracting the attention of the disabled.
As shown in fig. 4, a traffic early warning method is provided according to a second aspect of the embodiment of the present application, and is applied to the traffic early warning system of any one of the above technical solutions, and is used for a vehicle-mounted unit, where the traffic early warning method includes:
step 101: first moving speed information, position information, second moving speed information, and traveling direction information are acquired. The on-board unit may acquire the first moving speed information and the position information determined via the wearable unit through the interactive unit, the second moving speed information being acquired by collecting a measurement result of the second speed detection module, and the traveling direction information being acquired by collecting a detection result of the traveling direction detection module.
Step 102: and judging whether a collision risk exists between the vehicle-mounted unit and the wearable unit or not based on the first moving speed information, the position information, the second moving speed information and the traveling direction information. It is understood that the feasible routes of all wearable units can be determined by the first moving speed information and the position information, the traveling route of the vehicle can be determined by the second moving speed information and the traveling direction information, and further, whether collision risk exists can be determined by judging whether the two traveling routes are converged at the same time point.
Step 103: and under the condition that collision risks exist, sending out an early warning signal to the interaction unit. Under the condition that there is collision risk, on-vehicle the control unit can send early warning signal, and it can be understood that early warning signal can send wearable unit through interactive unit, and wearable unit responds to early warning signal and can carry out the police dispatch newspaper to the suggestion disadvantaged traffic participant notices the vehicle of coming and going.
The traffic early warning method provided by the embodiment of the application comprises the steps of obtaining first moving speed information and position information of a wearable unit, obtaining second speed information and traveling direction information of a vehicle-mounted unit, respectively estimating traveling routes of vulnerable traffic participants and traveling routes of vehicles, further judging whether the vulnerable traffic participants have collision risks with the vehicles, generating early warning signals under the condition that the collision risks exist, replacing whistle alarms of the vehicles in the traditional technology, enabling the alarms to act on the vulnerable traffic participants more directly, reducing the probability of injury of the vulnerable traffic participants, and reducing the frequency of traffic accidents.
In some examples, the step of obtaining the first moving speed information, the position information, the second moving speed information, and the traveling direction information includes: acquiring detection results of a second speed detection module and a traveling direction detection module, and acquiring second moving speed information and traveling direction information; receiving first moving speed information and position information transmitted through an interaction unit at a first frequency; wherein the first frequency is inversely related to the first moving speed information.
The first moving speed information and the position information sent by the interaction unit are received at the first frequency, so that the position and the moving speed of the vulnerable traffic participant can be frequently acquired, and the estimation of the traveling route of the vulnerable traffic participant is more accurate.
The first frequency is negatively correlated with the first moving speed information, the larger the first moving speed information is, the higher the moving speed of a person wearing the wearable device is, and the higher the moving speed is, the stronger the protection capability of the traffic device on the person is, so that the value of the first frequency of the device with the higher moving speed can be properly reduced.
Wherein, the first moving speed information is 1m/s, and the first frequency is 100 times/s. The sampling frequency is inversely proportional to the device speed.
The calculation formula is as follows:
f＝100/V
wherein f is the first frequency, and V is the traveling speed of the vulnerable traffic participant.
In some examples, the step of determining whether there is a risk of collision between the in-vehicle unit and the wearable unit based on the first moving speed information, the location information, the second moving speed information, and the traveling direction information includes: determining a vehicle type of the vulnerable traffic participant wearing the wearable unit based on the first moving speed information; pre-storing a first action track of the vulnerable traffic participant based on the carrier type, the first moving speed information and the position information; determining a second action track of the vehicle based on the second moving speed information and the traveling direction information; and judging whether collision risks exist or not based on the first action track, the second action track and the carrier type.
The first moving speed information can be analyzed, the carrier type of the vulnerable traffic participant wearing the wearable unit can be further determined, the carrier type can comprise walking, bicycles, electric vehicles and the like, whether collision risks exist or not is further determined based on different carrier types, the prediction of the collision risks is more accurate, and frequent or missed early warning information sending is avoided.
In some examples, the step of determining, based on the first movement speed information, a vehicle type of the vulnerable traffic participant wearing the wearable unit comprises: judging the type of the carrier to be a walking mode under the condition that the first moving speed information is less than or equal to a first threshold value; and under the condition that the first moving speed information is larger than a first threshold value, judging that the vehicle type is a double-wheel vehicle mode.
The specific vehicle type can be determined based on the difference between the first moving speed information and the first threshold, so that the determination of the vehicle type is more accurate, when the first moving speed information is less than or equal to the first threshold, it indicates that the traveling speed of the vulnerable traffic participant wearing the wearable device is slow, in which case the vehicle mode can be determined as a walking mode, and when the first moving speed information is greater than the first threshold, it indicates that the vulnerable traffic participant wearing the wearable device travels faster, and the vehicle type can be determined as a two-wheel vehicle mode.
In some examples, a first action track of the vulnerable traffic participant is pre-stored based on the vehicle type, the first movement speed information and the location information; determining a first moving track by using the first moving speed information with the position information as an origin and a direction of 360 degrees around the origin as a moving direction under the condition that the carrier type is the walking mode; and under the condition that the vehicle type is a double-wheel vehicle mode, determining the moving direction of the vehicle based on the first moving information and the position information, and determining a first moving track by taking the position information as an original point and taking areas at 90 degrees on two sides of the moving direction of the vehicle as directions and using the first moving speed information.
As shown in fig. 3, when the vehicle type is the walking mode, the next traveling direction of the pedestrian on foot cannot be determined, and therefore, when the first traveling trajectory is determined, the first traveling trajectory needs to be calculated and acquired with 360 degrees as the direction. As shown in fig. 4, when the vehicle type is the two-wheel vehicle mode, the next traveling direction of the person on the two-wheel vehicle is relatively fixed, so that the vehicle traveling direction can be determined by first moving information and position information, and the first traveling track is determined in the direction of the area 90 ° on both sides of the vehicle traveling direction, where the wearable unit faces.
In some examples, the step of determining whether there is a risk of collision based on the first action track, the second action track, and the vehicle type includes: when the carrier type is a walking mode and the first action track and the second action track are crossed; taking a track which is crossed in the first action track and the second action track as a target track; judging whether a traffic signal lamp on the target track and a traffic signal lamp in the second action track have signal difference or not, and if yes, judging that no collision risk exists; if not, judging whether the target track has the separator or not, and if not, judging that the collision risk exists; if yes, judging whether the partition is provided with a gap, and if yes, judging that the collision risk exists; if not, whether the vehicle and the wearable unit are located on two sides of the partition or not is judged, if yes, no collision risk exists, and if not, the collision risk exists.
Under the condition that the vehicle type is the walking mode, if the pedestrian obeys the transportation cabinet, the pedestrian can not run the red light and can not translate the guardrail under the normal condition, so when determining whether the collision risk exists, if the traffic signal lamp between the vehicle and the pedestrian is different, the vehicle and the pedestrian can be considered to be free of the collision risk, if the separator exists on the collision track of the vehicle and the pedestrian, the guardrail is adopted, and the separator is not provided with a gap, the vehicle and the pedestrian can be considered to be free of the collision risk, so that the collision risk can be determined more accurately, and the false alarm rate is reduced.
In some examples, the step of determining whether there is a risk of collision based on the first action trajectory, the second action trajectory and the vehicle type further comprises: under the condition that the vehicle type is a double-wheel vehicle mode and the first action track and the second action track are crossed; taking a track which is crossed in the first action track and the second action track as a target track; if not, judging whether the target track has the separator or not, and if not, judging that the collision risk exists; if yes, judging whether the partition is provided with a notch, and if yes, judging that the collision risk exists; if not, whether the vehicle and the wearable unit are located on two sides of the partition or not is judged, if yes, no collision risk exists, and if not, the collision risk exists.
The vehicle type is a double-wheel vehicle mode, the double-wheel vehicle mode is considered to have the possibility of running a red light, and therefore whether the partition exists or not is further judged, if the partition exists on a collision track of the double-wheel vehicle mode, such as a guardrail, and the partition does not have a notch, the double-wheel vehicle mode and the partition do not have collision risks, so that the collision risks are determined more accurately, and the false alarm rate is reduced.
As shown in fig. 5, a traffic early warning method is provided according to a second aspect of the embodiment of the present application, and is applied to a traffic early warning system of any one of the above technical solutions, and is used for a wearable unit, where the traffic early warning method includes:
step 301: and responding to the early warning signal, and controlling the alarm module to be started.
According to the traffic early warning method provided by the embodiment of the application, the warning module is controlled to be started when the early warning signal is received, the warning module can give out sound and light and vibration warning to replace vehicle whistling in the traditional technology, on one hand, noise pollution is reduced, on the other hand, the warning can be directly acted on target vulnerable traffic participants, the warning is more targeted, and the probability that the vulnerable traffic participants are collided is favorably reduced.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A traffic warning system, comprising:
the wearable unit comprises a first speed detection module, an alarm module and a positioning module, wherein the first speed detection module is used for detecting first moving speed information of the wearable unit, and the positioning module is used for acquiring position information of the positioning module;
an interaction unit connected to the wearable unit;
the vehicle-mounted unit is arranged on a vehicle and connected to the interaction unit, the vehicle-mounted unit comprises a second speed detection module, a traveling direction detection module and a processing module, the second speed detection module is used for detecting second moving speed information of the vehicle, the traveling direction detection module is used for detecting traveling direction information of the vehicle, the processing module is used for determining whether collision risks exist between the vehicle and the wearable unit or not based on the first moving speed information, the position information, the second moving speed information and the traveling direction information, and generating early warning signals under the condition that the collision risks exist, and the warning module is used for responding to the early warning signals to give warnings;
the vehicle-mounted unit is used for acquiring the first moving speed information, the position information, the second moving speed information and the traveling direction information;
determining whether a collision risk exists between the on-board unit and the wearable unit based on the first moving speed information, the location information, the second moving speed information, and the traveling direction information;
sending an early warning signal to the interaction unit under the condition that collision risks exist;
the step of determining whether there is a risk of collision between the in-vehicle unit and the wearable unit based on the first moving speed information, the position information, the second moving speed information, and the traveling direction information includes:
determining a vehicle type of a vulnerable traffic participant wearing the wearable unit based on the first movement speed information;
pre-storing a first action track of the vulnerable traffic participant based on the carrier type, first moving speed information and the position information;
determining a second action trajectory of the vehicle based on the second moving speed information and the traveling direction information;
determining whether the collision risk exists based on the first action track, the second action track and the vehicle type;
the step of determining whether the collision risk exists based on the first action track, the second action track and the vehicle type further comprises:
when the vehicle type is a two-wheel vehicle mode and the first action track and the second action track intersect;
taking a track which is crossed in the first action track and the second action track as a target track;
if not, judging whether the target track has the separator or not, and if not, judging that the collision risk exists;
if yes, judging whether the isolator has a gap, and if yes, judging that the collision risk exists;
if not, judging whether the vehicle and the wearable unit are positioned on two sides of the partition, if so, not having collision risk, and if not, having collision risk.
2. The traffic warning system of claim 1,
the interaction unit includes:
the first server is connected to the vehicle-mounted unit;
a second server connected to the first server and the wearable unit;
the alarm module comprises an audible and visual alarm and/or a vibration alarm.
3. A traffic early warning method applied to the traffic early warning system of claim 1 or 2 for the on-board unit, the traffic early warning method comprising:
acquiring the first moving speed information, the position information, the second moving speed information and the traveling direction information;
determining whether there is a risk of collision between the on-board unit and the wearable unit based on the first moving speed information, the location information, the second moving speed information, and the traveling direction information;
sending an early warning signal to the interaction unit under the condition that collision risks exist;
the step of determining whether there is a risk of collision between the in-vehicle unit and the wearable unit based on the first moving speed information, the position information, the second moving speed information, and the traveling direction information includes:
determining a vehicle type of a vulnerable traffic participant wearing the wearable unit based on the first movement speed information;
pre-storing a first action track of the vulnerable traffic participant based on the carrier type, first moving speed information and the position information;
determining a second trajectory of action of the vehicle based on the second movement speed information and the travel direction information;
determining whether the collision risk exists based on the first action track, the second action track and the vehicle type;
the step of determining whether the collision risk exists based on the first action track, the second action track and the vehicle type further comprises:
when the vehicle type is a two-wheel vehicle mode and the first action track and the second action track intersect;
taking a track which is crossed in the first action track and the second action track as a target track;
if not, judging whether the target track has the separator or not, and if not, judging that the collision risk exists;
if yes, judging whether the isolator has a gap, and if yes, judging that the collision risk exists;
if not, judging whether the vehicle and the wearable unit are positioned on two sides of the partition, if so, not having collision risk, and if not, having collision risk.
4. The traffic early warning method according to claim 3, wherein the step of acquiring the first moving speed information, the position information, the second moving speed information, and the traveling direction information includes:
acquiring detection results of the second speed detection module and the advancing direction detection module, and acquiring second moving speed information and advancing direction information;
receiving the first moving speed information and the position information transmitted through the interaction unit at a first frequency;
wherein the first frequency is inversely related to the first moving speed information.
5. The traffic warning method according to claim 3, wherein the step of determining a vehicle type of the vulnerable traffic participant wearing the wearable unit based on the first moving speed information comprises:
judging the type of the carrier to be a walking mode under the condition that the first moving speed information is less than or equal to a first threshold value;
and under the condition that the first moving speed information is larger than a first threshold value, judging that the vehicle type is a double-wheel vehicle mode.
6. The traffic early warning method according to claim 5, wherein the first action track of the vulnerable traffic participant is prestored based on the vehicle type, first moving speed information and the position information;
determining the first action trajectory from the first moving speed information with the position information as an origin and a direction of 360 ° around the origin as a traveling direction when the vehicle type is the walking mode;
and under the condition that the vehicle type is the double-wheel vehicle mode, determining the moving direction of the vehicle based on the first moving information and the position information, and determining the first action track through the first moving speed information by taking the position information as an original point and taking areas of 90 degrees at two sides of the moving direction of the vehicle as directions.
7. The traffic warning method according to claim 5, wherein the step of determining whether the collision risk exists based on the first action track, the second action track and the vehicle type comprises:
if the vehicle type is the walking mode and the first and second motion trajectories intersect;
taking a track which is crossed in the first action track and the second action track as a target track;
judging whether a traffic signal lamp on the target track and a traffic signal lamp in the second action track have signal difference or not, and if yes, judging that no collision risk exists;
if not, judging whether the target track has the separator or not, and if not, judging that the collision risk exists;
if yes, judging whether the isolator has a gap, and if yes, judging that a collision risk exists;
if not, whether the vehicle and the wearable unit are positioned on two sides of the partition or not is judged, if yes, no collision risk exists, and if not, a collision risk exists.
8. A traffic early warning method applied to the traffic early warning system of claim 1 or 2 and applied to the wearable unit, the traffic early warning method comprising:
and responding to the early warning signal, and controlling the alarm module to be started.
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