CN110276948B - Expressway safe driving warning method and system - Google Patents

Abstract

The invention discloses a highway driving safety warning method and system. The invention relates to a highway driving safety warning system, which comprises: the detection module is used for detecting the information of the running vehicle in real time; the first judgment module is used for judging whether the distance between two adjacent workshops is the safe driving distance or not; the second judgment module is used for judging whether the vehicle speed difference value between two adjacent vehicles is greater than a safety value or not; and the warning module is used for sending warning information to the vehicle. The invention can detect the information of vehicle running in real time, including vehicle speed, lane information and the like, thereby realizing the monitoring and prompt of the whole course of the vehicle.

Description

A kind of highway safety driving warning method and system

technical field

The invention relates to the technical field of traffic management, in particular to a method and system for warning of safe driving on expressways.

Background technique

With the increase of car ownership year by year, there are more and more cars on the highway. On the highway, the traffic flow is too large, the speed is fast, and the distance is small. Accidents can cause dozens of vehicles to rear-end in a series of rear-end collisions, causing heavy casualties, heavy losses, and serious congestion, especially on curves and downhill sections, where drivers have poor visibility or are unable to make an emergency stop. Causes multiple vehicles to rear-end.

The current practice is that when a car has a rear-end collision on a highway section or cannot be moved immediately, the driver should call the police immediately, and at the same time, place the warning triangle at a position 100-200 meters behind the car to evacuate people and quickly evacuate Highway, there are several problems in this way: 1. It is often difficult to get through the alarm phone. Sometimes the mobile phone cannot be found after a car accident. Most of the fixed alarm phone booths on the side of the expressway are damaged or dismantled because they are not anti-theft, and they cannot be accurately described after the phone is opened. The location of the accident, delaying the rescue time. 2. It takes time to find the tripod. It is very dangerous to take the tripod to the rear of the car. Often, you are not injured in the accident, but you are hit by the car behind you when placing the tripod. Low, it is not easy to attract the attention of the oncoming car. When the oncoming car runs so fast that the tripod can be seen, it is too late, so it can only be used to brake suddenly, which causes a series of rear-end collisions of the rear vehicles. 3. The driver usually stands near the car to call the police, and looks around to determine the location, which is easy to distract and cause the collision to be avoided in time.

Therefore, in order to ensure the driving safety of the vehicle, the vehicle will be required to maintain a relatively safe distance, and warning signs will be set up on the outside of the expressway to remind the vehicle distance at regular intervals, but the driver needs to turn his attention to the driving process. It is also very unsafe to observe the distance from the outside of the road.

For example, the patent publication No. CN1462986 discloses a method and system for instant warning of highway safety, a timely warning method for safety applied on highways, and a timely warning system for safety that realizes the method, belonging to the technical field of traffic safety facilities. According to the invention, a network is composed of subsystems, and the nodes in the subsystem include signal switches and alarm devices, which are distributed along the side of the highway guardrail. When a node receives an accident signal, it immediately transmits information through the network, so that the alarm device sends out an alarm signal. Therefore, when an accident occurs somewhere on the highway, as long as someone here sends an accident signal through the nearest signal switch, the highway guardrail safety instant warning system will respond immediately, not only the monitoring center can respond to the accident location and other information in time, but also after the accident location. A certain distance along the way alarm device alarm in time. Remind the driver to slow down immediately, so as to avoid the occurrence of continuous rear-end collisions and minimize the damage of sudden accidents. The present invention is easy to realize, and the cost is economical. The system uses the public telephone network to form an early warning network. Since the artificial signal switch is used to replace monitoring devices such as sensors, it cannot realize the monitoring and early warning of vehicle rear-end collisions. Therefore, the system is only suitable for after the accident occurs, prompting subsequent vehicles to prevent continuous rear-end collisions, but cannot The occurrence of rear-end collisions is warned in advance to prevent rear-end collisions.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a highway safety driving warning method and system in view of the defects of the prior art, which can detect the driving information of the vehicle in real time, including vehicle speed, lane information, etc., so as to realize the monitoring of the whole process of the vehicle and remind it in time .

In order to achieve the above purpose, the present invention adopts the following technical solutions:

A highway safety driving warning system, comprising:

The detection module is used to detect the information of the driving vehicle in real time;

The first judgment module is used for judging whether the distance between two adjacent workshops is a safe driving distance;

The second judgment module is used for judging whether the speed difference between two adjacent vehicles is greater than a safe value;

The warning module is used to send warning information to the vehicle.

Further, it also includes:

The pre-storage module is used for pre-storing basic information of each lane; wherein, the basic information of each lane includes a safe driving distance between adjacent vehicles and a safe speed difference between two adjacent vehicles.

Further, it also includes:

The third judgment module is used for judging whether two adjacent vehicles are in the same lane.

Further, it includes a radio frequency communication module and a vehicle-mounted device; the radio frequency communication module communicates with the vehicle-mounted device in two-way wireless communication; the radio frequency communication modules are arranged on the highway isolation belt at equal intervals, and the vehicle-mounted device is placed in the vehicle.

Further, the information of the traveling vehicle detected in the detection module includes vehicle type, vehicle speed, and lane information.

Correspondingly, it also includes a method for highway safety driving warning, characterized in that it includes the steps of:

S1. Real-time detection of the information of the driving vehicle;

S2. Determine whether the distance between two adjacent vehicles is a safe driving distance through the detected information; if so, execute step S3;

S3. Determine whether the speed difference between two adjacent vehicles is greater than the safety value; if so, execute step S4;

S4. Send a warning message to the vehicle.

Further, S1 also includes:

S0. Pre-store basic information of each lane; wherein, the basic information of each lane includes a safe driving distance between adjacent vehicles and a safe speed difference between two adjacent vehicles.

Further, before the step S2, it also includes:

Determine whether two adjacent vehicles are in the same lane.

Further, it includes a radio frequency communication module and a vehicle-mounted device; the radio frequency communication module communicates with the vehicle-mounted device in two-way wireless communication; the radio frequency communication modules are arranged on the highway isolation belt at equal intervals, and the vehicle-mounted device is placed in the vehicle.

Further, the information of the traveling vehicle detected in the step S1 includes the vehicle type, vehicle speed, and lane information.

Compared with the prior art, the present invention sets a radio frequency communication module on the highway isolation belt, which can accurately locate the vehicles driving on the highway, understand the state of the vehicles, and enable the user to know the driving state of the surrounding vehicles in time to avoid traffic accidents. ACCIDENT.

Description of drawings

Fig. 1 is the structure diagram of a kind of expressway safety driving warning system provided by Embodiment 1;

FIG. 2 is a flowchart of a method for warning of safe driving on expressways provided by Embodiment 1;

3 is a schematic diagram of the two-way wireless communication between the vehicle-mounted device and the second radio frequency communication module provided by the first embodiment;

4 is a schematic diagram of a highway safety driving warning provided by Embodiment 2;

FIG. 5 is an example diagram of a third judgment module provided in the first embodiment.

Detailed ways

The embodiments of the present invention are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other under the condition of no conflict.

The purpose of the present invention is to provide a method and system for warning of safe driving on expressways in view of the defects of the prior art.

Example 1

This embodiment provides a highway safety driving warning system, as shown in FIG. 1 , including:

The detection module 11 is used for real-time detection of the information of the driving vehicle;

The first judging module 12 is used for judging whether the vehicle distance between two adjacent workshops is a safe driving distance;

The second judging module 13 is used for judging whether the vehicle speed difference between two adjacent vehicles is greater than a safe value;

The warning module 14 is used for sending warning information to the vehicle.

In this embodiment, a radio frequency communication module and a vehicle-mounted device are also included; the radio frequency communication module communicates with the vehicle-mounted device in two-way wireless communication; the vehicle-mounted device is placed in the vehicle; the radio frequency communication modules are arranged at equal intervals on the highway On the isolation belt, wherein, by setting a shielding mechanism, the radio frequency communication module can send and receive wireless signals in a horn-like direction.

It should be noted that the vehicle-mounted device is the access card used when the vehicle enters and exits the high-speed; in this embodiment, the access card is transformed into the vehicle-mounted device, and the vehicle-mounted device includes a radio frequency module.

In this embodiment, in order to facilitate understanding of the specific implementation of the present invention, in this embodiment, the radio frequency module disposed in the vehicle-mounted device is referred to as the first radio frequency communication module; the radio frequency communication module disposed in the highway isolation belt is referred to as the first radio frequency communication module. Two RF communication modules. The first radio frequency communication module and the second radio frequency communication module perform bidirectional wireless communication.

The second radio frequency communication modules are arranged at equal intervals in the isolation belt of the expressway. In this embodiment, the second radio frequency communication modules are arranged at equal intervals at a certain distance on the ordinary section of the expressway; in the accident-prone section, the second radio frequency communication modules may be arranged relatively densely.

In this embodiment, it also includes:

The pre-storage module is used to pre-store the basic information of each lane; wherein, the basic information of each lane includes the safe driving distance between adjacent vehicles, the speed safety difference between two adjacent vehicles, the highest speed value of the current lane, the current The minimum speed value of the lane, the RSSI value of the distance between each lane and the highway isolation belt, the width of each lane, etc.

In this embodiment, the pre-stored vehicle speed safety difference between two adjacent vehicles includes the vehicle speed safety difference between the two adjacent vehicles that is a safe driving distance, and the vehicle speed safety difference between the two adjacent vehicles that is not a safe driving distance. When the safe driving distance is set, a speed safety difference is set, and when the safe driving distance is less than a speed safety difference, the two safety differences are different. In order to facilitate the understanding of the specific implementation of the present invention, in this embodiment, the vehicle speed safety difference set when the safe driving distance is set is referred to as the first vehicle speed safety difference; the vehicle speed safety difference set when the safe driving distance is less than Two speed safety difference.

The detection module 11 is used to detect the information of the driving vehicle in real time.

Wherein, the real-time detection of the information of the traveling vehicle is detected by the second radio frequency communication module.

The detected information of the moving vehicle includes the vehicle type, vehicle speed, lane information, and location.

In this embodiment, the speed measurement sensor is used to measure the speed of the vehicle, and the speed measurement sensor is placed in the vehicle-mounted device, so that the real-time speed measurement of the vehicle can be realized.

In this embodiment, the vehicle types include cars, trucks, and special vehicles, such as ambulances, fire trucks, and the like.

Lane information includes driving lanes, overtaking lanes, emergency lanes, and the like.

The vehicle-mounted device sends the detected vehicle speed and vehicle type information to the second radio frequency communication module, and the second radio frequency communication module records the current vehicle information.

After the vehicle-mounted device sends a signal to the second radio frequency communication module, the second radio frequency communication module obtains the RSSI value of the signal according to the signal strength.

In this embodiment, when the vehicle enters the expressway, the issued on-board device is associated with the vehicle information, the first radio frequency communication module of the on-board device sends a request signal to the second radio frequency communication module in real time, and after the second radio frequency communication module receives the signal , that is, the model and license plate of the vehicle are read, and the RSSI value of the wireless signal can be obtained through the signal strength at the same time. Generally, the RSSI value of the wireless signal is related to the distance between the two communication parties. The larger the distance, the weaker the signal and the smaller the RSSI value; through the RSSI value, the lateral distance between the vehicle and the isolation belt can be judged, so as to determine where the vehicle is located. Lane.

The second radio frequency communication module compares the obtained RSSI value with the pre-stored RSSI value of the distance between each lane and the highway isolation belt, and then determines the lane information (emergency lane, overtaking lane, driving lane) where the vehicle is located. After knowing the lane information of the vehicle, the stored maximum speed value, minimum speed value of the current road section, safe driving distance between adjacent vehicles and lane information are sent to the vehicle-mounted device. If the current vehicle is a car and is in the driving lane, the maximum speed of the current road section is 120km/h, the minimum speed is 60km/h, and the safe driving distance between adjacent vehicles is 0.2km.

In this embodiment, a third judging module is further included for judging whether two adjacent vehicles are in the same lane.

In this embodiment, if the second radio frequency communication module corresponding to the current vehicle detects the lane information on which the current vehicle is located, and the second radio frequency communication module corresponding to the current vehicle receives the information sent by the second radio frequency communication module corresponding to the adjacent vehicle Lane information of adjacent vehicles. At this time, the second radio frequency communication module corresponding to the current vehicle determines whether two adjacent vehicles are in the same lane.

If yes, then judge whether the distance between two adjacent vehicles is a safe driving distance; if not, do not process.

It should be noted that, each second radio frequency communication module is communicated and connected through a mobile public network wireless communication module (such as a 4G module, etc.) or a wire (such as 485, etc.). In this embodiment, there is no limitation on how each second radio frequency communication module communicates.

In this embodiment, for example, as shown in FIG. 5 , if the second radio frequency communication module corresponding to the current vehicle C1 detects that the vehicle C1 is in the driving lane, the second radio frequency communication module corresponding to the adjacent vehicle C2 detects that the vehicle C2 is in the driving lane. The second radio frequency communication module corresponding to the vehicle C2 sends the lane information of the vehicle C2 to the second radio frequency communication module corresponding to the vehicle C1, and the second radio frequency communication module corresponding to the vehicle C1 determines that the vehicle C1 and the vehicle C2 are in different positions. If the second radio frequency communication module corresponding to the adjacent vehicle C2 detects that the vehicle C2 is in the driving lane, the second radio frequency communication module corresponding to the vehicle C2 sends the lane information of the vehicle C2 to the first radio frequency communication module corresponding to the vehicle C1. Two radio frequency communication modules, the second radio frequency communication module corresponding to the vehicle C1 determines that the vehicle C1 and the vehicle C2 are in the same lane, and then continues to determine whether the distance between the two adjacent vehicles is a safe driving distance.

The first judging module 12 is used for judging whether the distance between two adjacent vehicles is a safe driving distance.

The distance between two adjacent vehicles is calculated through the detected information, and the calculation method may be to calculate the distance between the two vehicles through each of the set second radio frequency communication modules; or to calculate the distance between the two vehicles through the detected position information. distance between two cars. This embodiment does not limit how to calculate the distance between the two vehicles.

In this embodiment, it is determined whether the distance between two adjacent vehicles is a safe driving distance, and if so, it is determined whether the speed difference between the two adjacent vehicles is greater than the first vehicle speed safety difference; Whether the vehicle speed difference between vehicles is greater than the second vehicle speed safety difference.

The second judging module 13 is used for judging whether the vehicle speed difference between two adjacent vehicles is greater than a safe value;

In this embodiment, the speed of the vehicle adjacent to the current vehicle is detected in real time by the speed measuring sensor in the vehicle-mounted device, and it is judged whether the speed difference between the two adjacent vehicles is greater than a safe value. Issue a warning message.

It should be noted that if the vehicle speed difference between two adjacent vehicles in this embodiment is greater than a safe value, it means that there is a potential danger. Specifically, it means that the speed of the vehicle behind (in the opposite direction of the current vehicle) is greater than the speed of the current vehicle, and the difference between the speed of the vehicle behind and the speed of the current vehicle is greater than the preset speed safety difference, indicating that there is a potential danger; If the difference between the speed of the vehicle behind and the speed of the current vehicle is smaller than the preset safety difference of vehicle speed, a prompt message may be sent to the vehicle or not processed.

If the speed of the vehicle behind (the opposite direction of the current vehicle) is lower than the speed of the current vehicle, no processing is required.

The warning module 14 is used for sending warning information to the vehicle.

When it is determined that the speed difference between two adjacent vehicles is greater than the safe value, indicating that there is a danger, a warning message is sent to the vehicle, and a warning message is sent to the vehicle to remind the driver. Wherein, the method of reminding is to remind through one or more of sound, vibration, and light.

It should be pointed out that, as shown in FIG. 3 , M _i , M _i+1 , and M _i+2 are the second radio frequency communication modules arranged at equal intervals, where i≥1, it is assumed that the vehicle C1 is currently in the signal transmission and reception coverage of M _i Within the range, set the width of a passing lane, the width of a traffic lane, and the width of an emergency lane in the expressway direction to be about 11m in total, and set the length of the vehicle C1 to be about 5m. According to the propagation speed of the radio frequency signal in the air, After calculation, it can be seen that even considering the response speed of the relevant software and hardware in the communication process, it is enough to ensure that when the vehicle C1 passes through _Mi , a complete wireless communication process of sending and receiving is completed between the two.

However, in order to prevent the vehicle C1 from missing the response signal from the second radio frequency communication module _Mi and ensure the communication is correct, another solution can be adopted. The complete process is as follows: the vehicle C1 sends the request signal, and the second radio frequency communication module _Mi receives the request signal immediately notify the next second radio frequency communication module (M _i+1 ) in front of it (the current vehicle driving direction), or the next batch of second radio frequency communication modules (M _i+1 , M _i+2 ), order the next The batch module starts to periodically send response signals, and as the vehicle travels, there must be at least one response signal sent by the second radio frequency communication module that is received by the vehicle.

It should be noted that, each second radio frequency communication module is communicated and connected through a mobile public network wireless communication module (such as a 4G module, etc.) or a wire (such as 485, etc.). In this embodiment, there is no limitation on how each second radio frequency communication module communicates.

In this embodiment, a radio frequency communication module is set on the highway isolation belt, which can accurately locate the vehicles driving on the highway, understand the status of the vehicles, and enable the user to know the driving status of the surrounding vehicles in time to avoid traffic accidents.

Correspondingly, the present embodiment also provides a method for highway safety driving warning, as shown in FIG. 2 , including the steps:

S11. Real-time detection of the information of the driving vehicle;

S12. Determine whether the distance between two adjacent vehicles is a safe driving distance through the detected information; if so, execute step S13;

S13. Determine whether the vehicle speed difference between two adjacent vehicles is greater than a safe value; if so, execute step S14;

S14. Send a warning message to the vehicle.

In this embodiment, before step S11, it further includes:

S10. Pre-store basic information of each lane; wherein, the basic information of each lane includes a safe driving distance between adjacent vehicles and a safe speed difference between two adjacent vehicles.

In this embodiment, before step S12, it also includes steps:

Determine whether two adjacent vehicles are in the same lane.

In this embodiment, a radio frequency communication module and a vehicle-mounted device are also included; the radio frequency communication module and the vehicle-mounted device communicate in two-way wireless communication; the radio frequency communication modules are arranged at equal intervals on the highway isolation belt, and the vehicle-mounted device is placed in the vehicle.

In step S11, the detected information of the traveling vehicle includes vehicle type, vehicle speed, and lane information.

Embodiment 2

The difference between a highway safety driving warning system of the present embodiment and the first embodiment is:

As shown in FIG. 4 , in this embodiment, it is assumed that the vehicle C1 is currently at the position of the second radio frequency communication module M _i+2 , and the on-board device in the vehicle C1 communicates with the second radio frequency communication module M _i+2 two-way wirelessly (i ≥1), and the speed of C1 is the normal speed. The safe distance between the vehicle C1 and the rear vehicle C2 is the distance from the second radio frequency communication module Mi ₊₂ to the second radio frequency communication module _Mi , and the safe distance between the vehicle C1 and the preceding vehicle C3 is the distance from the second radio frequency communication module Mi ₊₂ to the second radio frequency communication module Mi+2. The distance of the second radio frequency communication module M _i+4 .

It should be pointed out that each second radio frequency communication module is communicated and connected through a mobile public network wireless communication module (such as a 4G module, etc.) or a wire (such as 485, etc.). In this embodiment, there is no limitation on how each second radio frequency communication module communicates.

This embodiment will be described in detail according to various situations, but it should be noted that in actual situations, it is not limited to the situation proposed in this implementation.

In this embodiment, it is determined whether two adjacent vehicles are in the same lane, that is, it is determined whether the vehicle C1 and the vehicle C2 are in the same lane; or whether the vehicle C1 and the vehicle C3 are in the same lane; or whether the vehicle C1, the vehicle C2, and the vehicle C3 are in the same lane If it is in the same lane, if it is in a different lane, it will not be processed;

If they are in the same lane, determine whether the distance between two adjacent vehicles is a safe driving distance;

If it is a safe driving distance, it is determined whether the vehicle speed difference between two adjacent vehicles is greater than the first vehicle speed safety difference.

In this embodiment, it is assumed that the vehicle speed of the vehicle C1 is V1, the vehicle speed of the vehicle C2 is V2, and the vehicle speed of the vehicle C3 is V3.

Take the current vehicle C1 and the rear vehicle C2 as examples for detailed description (there is no vehicle in front of the vehicle C1), specifically:

If the vehicle speed V1 of the vehicle C1 is lower than the vehicle speed V2 of the vehicle C2, that is, V1<V2, the difference between the vehicle speeds of the vehicle C1 and the vehicle C2 is set to be ΔV. If ΔV is greater than the first vehicle speed safety difference, indicating that there is a potential danger, a reminder message needs to be sent to the vehicle, where the reminder information includes vehicle C1 changing lanes in time, etc.; if ΔV is smaller than the first vehicle speed safety difference, it will not be processed.

If the vehicle speed V1 of the vehicle C1 is greater than the vehicle speed V2 of the vehicle C2, that is, V1>V2, no processing is performed.

Taking the current vehicle C1 and the preceding vehicle C3 as examples for detailed description (there is no vehicle behind the vehicle C1), the details are as follows:

If the vehicle speed V1 of the vehicle C1 is greater than the vehicle speed V3 of the vehicle C3, that is, V1>V3, the vehicle speed difference between the vehicle C1 and the vehicle C3 is set to be ΔV. If ΔV is greater than the first vehicle speed safety difference, indicating that there is a danger, a reminder message needs to be sent to the vehicle, where the reminder information includes reminding the vehicle C1 to change lanes in time; if ΔV is smaller than the first vehicle speed safety difference, no processing is performed.

If the vehicle speed V1 of the vehicle C1 is lower than the vehicle speed V3 of the vehicle C3, that is, V1<V3, no processing is performed.

Taking vehicle C1, vehicle C2, and vehicle C3 as examples, the details are as follows:

If the vehicle speed V2 of the vehicle C2 is less than the vehicle speed V1 of the vehicle C1, and the vehicle speed V1 of the vehicle C1 is less than the vehicle speed V3 of the vehicle C3, that is, V2<V1<V3, no processing is performed.

If the speed V2 of the vehicle C2 is less than the speed V1 of the vehicle C1, and the speed V1 of the vehicle C1 is greater than the speed V3 of the vehicle C3, that is, V2<V1, V1>V3, then the speed difference between the vehicle C1 and the vehicle C3 is set to be ΔV, if ΔV If it is greater than the first vehicle speed safety difference, it means that there is a hidden danger, and a reminder message needs to be sent to the vehicle, where the reminder information includes reminding the vehicle C1 to change lanes in time; if ΔV is less than the first vehicle speed safety difference, it will not be processed.

If the speed V2 of the vehicle C2 is greater than the speed V1 of the vehicle C1, and the speed V1 of the vehicle C1 is less than the speed V3 of the vehicle C3, that is, V2>V1, V1<V3, then the speed difference between the vehicle C1 and the vehicle C2 is set to be ΔV, if ΔV If it is greater than the first vehicle speed safety difference, it means that there is a hidden danger, and a reminder message needs to be sent to the vehicle, where the reminder information includes reminding the vehicle C1 to change lanes in time; if ΔV is less than the first vehicle speed safety difference, it will not be processed.

If the speed V2 of the vehicle C2 is greater than the speed V1 of the vehicle C1, and the speed V1 of the vehicle C1 is greater than the speed V3 of the vehicle C3, that is, V2>V1>V3, then make a progress judgment based on the lane in which it is located, as follows:

If the vehicle C1, the vehicle C2, and the vehicle C3 are in the same lane, reminder information needs to be sent to the vehicle, where the reminder information includes reminding the vehicle C1 to change lanes in time, the vehicle C2 to decelerate, and the vehicle C3 to accelerate.

If the vehicle C1 and the vehicle C2 are in the same lane, and the vehicle C3 is in a different lane, the vehicle speed difference between the vehicle C1 and the vehicle C2 is set to be ΔV. If ΔV is greater than the first vehicle speed safety difference, indicating that there is a danger, a reminder message needs to be sent to the vehicle, where the reminder information includes vehicle C1 changing lanes in time, vehicle C2 decelerating, etc.; if ΔV is smaller than the first vehicle speed safety difference, no action will be taken. deal with.

If the vehicle C1 and the vehicle C3 are in the same lane, and the vehicle C2 is in a different lane, the vehicle speed difference between the vehicle C1 and the vehicle C3 is set to be ΔV. If ΔV is greater than the first vehicle speed safety difference, indicating that there is a danger, a reminder message needs to be sent to the vehicle, where the reminder information includes reminding vehicle C1 to change lanes in time, vehicle C3 to accelerate, etc.; if ΔV is smaller than the first vehicle speed safety difference, then Not processed.

If the vehicle C2 and the vehicle C3 are in the same lane and the vehicle C1 is in a different lane, since the vehicle distance between the vehicle C2 and the vehicle C3 is two safe distances, no processing is required.

If it is not the safe driving distance, determine whether the vehicle speed difference between two adjacent vehicles is greater than the second vehicle speed safety difference.

In this embodiment, it is assumed that the vehicle speed of the vehicle C1 is V1, the vehicle speed of the vehicle C2 is V2, and the vehicle speed of the vehicle C3 is V3.

Take the current vehicle C1 and the rear vehicle C2 as examples for detailed description (there is no vehicle in front of the vehicle C1), specifically:

If the vehicle speed V1 of the vehicle C1 is lower than the vehicle speed V2 of the vehicle C2, that is, V1<V2, the difference between the vehicle speeds of the vehicle C1 and the vehicle C2 is set to be ΔV. If ΔV is greater than the second vehicle speed safety difference, indicating that there is a danger, a reminder message needs to be sent to the vehicle, where the reminder information includes vehicle C1 changing lanes in time, etc.; if ΔV is smaller than the second vehicle speed safety difference, it will not be processed.

If the vehicle speed V1 of the vehicle C1 is greater than the vehicle speed V2 of the vehicle C2, that is, V1>V2, no processing is performed.

Taking the current vehicle C1 and the preceding vehicle C3 as examples for detailed description (there is no vehicle behind the vehicle C1), the details are as follows:

If the vehicle speed V1 of the vehicle C1 is greater than the vehicle speed V3 of the vehicle C3, that is, V1>V3, the vehicle speed difference between the vehicle C1 and the vehicle C3 is set to be ΔV. If ΔV is greater than the second vehicle speed safety difference, indicating that there is a danger, a reminder message needs to be sent to the vehicle, where the reminder information includes reminding the vehicle C1 to change lanes in time; if ΔV is smaller than the second vehicle speed safety difference, it will not be processed.

If the vehicle speed V1 of the vehicle C1 is lower than the vehicle speed V3 of the vehicle C3, that is, V1<V3, no processing is performed.

Taking vehicle C1, vehicle C2, and vehicle C3 as examples, the details are as follows:

If the vehicle speed V2 of the vehicle C2 is less than the vehicle speed V1 of the vehicle C1, and the vehicle speed V1 of the vehicle C1 is less than the vehicle speed V3 of the vehicle C3, that is, V2<V1<V3, no processing is performed.

If the speed V2 of the vehicle C2 is less than the speed V1 of the vehicle C1, and the speed V1 of the vehicle C1 is greater than the speed V3 of the vehicle C3, that is, V2<V1, V1>V3, then the speed difference between the vehicle C1 and the vehicle C3 is set to be ΔV, if ΔV If it is greater than the second vehicle speed safety difference, it means that there is a hidden danger, and a reminder message needs to be sent to the vehicle, where the reminder information includes reminding the vehicle C1 to change lanes in time; if ΔV is less than the second vehicle speed safety difference, it will not be processed.

If the speed V2 of the vehicle C2 is greater than the speed V1 of the vehicle C1, and the speed V1 of the vehicle C1 is less than the speed V3 of the vehicle C3, that is, V2>V1, V1<V3, then the speed difference between the vehicle C1 and the vehicle C2 is set to be ΔV, if ΔV If it is greater than the second vehicle speed safety difference, it means that there is a hidden danger, and a reminder message needs to be sent to the vehicle, where the reminder information includes reminding the vehicle C1 to change lanes in time; if ΔV is less than the second vehicle speed safety difference, it will not be processed.

If the speed V2 of the vehicle C2 is greater than the speed V1 of the vehicle C1, and the speed V1 of the vehicle C1 is greater than the speed V3 of the vehicle C3, that is, V2>V1>V3, then make a progress judgment based on the lane where it is located, as follows:

If the vehicle C1, the vehicle C2, and the vehicle C3 are in the same lane, reminder information needs to be sent to the vehicle, where the reminder information includes reminding the vehicle C1 to change lanes in time, the vehicle C2 to decelerate, and the vehicle C3 to accelerate.

If the vehicle C1 and the vehicle C2 are in the same lane, and the vehicle C3 is in a different lane, the vehicle speed difference between the vehicle C1 and the vehicle C2 is set to be ΔV. If ΔV is greater than the second vehicle speed safety difference, indicating that there is a danger, a reminder message needs to be sent to the vehicle, where the reminder information includes vehicle C1 changing lanes in time, vehicle C2 decelerating, etc.; if ΔV is smaller than the second vehicle speed safety difference, no action will be taken. deal with.

If the vehicle C1 and the vehicle C3 are in the same lane, and the vehicle C2 is in a different lane, the vehicle speed difference between the vehicle C1 and the vehicle C3 is set to be ΔV. If ΔV is greater than the second vehicle speed safety difference, indicating that there is a danger, a reminder message needs to be sent to the vehicle, where the reminder information includes reminding vehicle C1 to change lanes in time, vehicle C3 to accelerate, etc.; if ΔV is smaller than the second vehicle speed safety difference, then Not processed.

If the vehicle C2 and the vehicle C3 are in the same lane and the vehicle C1 is in a different lane, since the vehicle distance between the vehicle C2 and the vehicle C3 is a safe distance, no processing is required.

In this embodiment, if it is not a safe driving distance, the in-vehicle device including the vehicle C1 will remind the driver to pay attention to the vehicle ahead or behind, or remind the driver to change lanes in time.

It should be noted that the vehicle speeds of the vehicles in this embodiment may all be normal vehicle speeds, may all be overspeed or low speed, and some may be overspeed or low speed and some may be normal speed.

Embodiment 3

The difference between a highway safety driving warning system of the present embodiment and the first embodiment is:

In this embodiment, if the current vehicle is a large truck, the obtained lane information is that it is in the passing lane, and if the current road section position does not allow the large truck to enter the passing lane, one or more of sound, vibration, and light are used to prompt, Thereby alerting the driver.

If the current vehicle is an ambulance and the obtained lane information is that it is in the emergency lane, no prompt will be given.

In practical applications, it is not limited to the driving situation proposed in this embodiment, and based on the technical solutions disclosed in this embodiment, many situations are not difficult to analyze, which will not be repeated here.

In this embodiment, the speed limit values may be different according to different types of vehicles, different sections on the expressway, different expressways, and different lanes, and automatic discrimination can be realized by using this solution.

This embodiment can also determine whether the vehicle has entered the emergency lane, and different types of vehicles are treated differently.

Embodiment 4

The difference between a highway safety driving warning system of the present embodiment and the first embodiment is:

In this embodiment, the second radio frequency communication module corresponding to the current road segment receives the road segment conditions sent by the second radio frequency communication module in the next/batch (the direction in which the vehicle is traveling), such as uphill, downhill, accident-prone road sections, etc. , the second radio frequency communication module corresponding to the current road section sends the wireless signal to the vehicle-mounted device, and the vehicle-mounted device will remind the driver, such as broadcasting the situation of the road to be entered by voice, for example, the content of the voice broadcast is "about to enter the accident" Please drive with caution” or “There is an uphill section ahead, please drive with caution”, etc.

It should be noted that, each second radio frequency communication module is communicated and connected through a mobile public network wireless communication module (such as a 4G module, etc.) or a wire (such as 485, etc.). In this embodiment, there is no limitation on how each second radio frequency communication module communicates.

In this embodiment, the driver is reminded before entering the uphill, downhill, and accident-prone road sections, which plays an early warning role and effectively avoids the occurrence of accidents.

Embodiment 5

The difference between a highway safety driving warning system of the present embodiment and the first embodiment is:

In this embodiment, the in-vehicle device receives the wireless signal sent by the second radio frequency communication module in real time, that is, the in-vehicle device records the situation of the current lane of the vehicle in real time.

In this embodiment, a time threshold is preset. During the driving process of the vehicle, the vehicle-mounted device judges the current lane condition of the current vehicle in real time. If it is detected that the current vehicle changes lanes multiple times within the time threshold, it is a frequent lane change , the driver will be alerted by one or more of sound, vibration and light.

Among them, the corresponding number of lane changes can be set according to the actual situation, for example, multiple lane changes are 3 lane changes.

In this embodiment, during the driving process of the vehicle, the on-board device continuously records the condition of the lane in which the vehicle is located, so as to know whether the vehicle changes lanes frequently, and if so, a corresponding warning is issued.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention pertains can make various modifications or additions to the described specific embodiments or substitute in similar manners, but will not deviate from the spirit of the present invention or go beyond the definitions of the appended claims range.

Claims (6)

1. The utility model provides a highway driving safety warning system which characterized in that includes: the system comprises a radio frequency communication module, a vehicle-mounted device and a shielding mechanism; the radio frequency communication module is in bidirectional wireless communication with the vehicle-mounted device; the radio frequency communication modules are arranged on the highway isolation belt at equal intervals, and the vehicle-mounted device is placed in a vehicle; the radio frequency communication module is horn-shaped and directionally receives and transmits wireless signals;

the detection module is used for detecting the information of the running vehicle in real time;

the first judgment module is used for judging whether the distance between two adjacent workshops is the safe driving distance or not;

the method specifically comprises the following steps: the radio frequency communication module compares the obtained RSSI value with the prestored RSSI values of the distances between each lane and the highway isolation belt so as to determine the lane information of the vehicle;

judging whether the vehicle distance between two adjacent vehicles is the safe driving distance or not, and if so, judging whether the vehicle speed difference between the two adjacent vehicles is greater than a first vehicle speed safety difference or not; if not, judging whether the speed difference value between two adjacent vehicles is greater than a second speed safety difference value;

the second judgment module is used for judging whether the vehicle speed difference value between two adjacent vehicles is greater than a safety value or not;

the method specifically comprises the following steps: judging whether the speed difference between two adjacent vehicles is greater than a first speed safety difference, if so, sending warning information to the vehicles; if not, no processing is carried out;

judging whether the speed difference between two adjacent vehicles is greater than a second speed safety difference, if so, sending warning information to the vehicles; if not, no processing is carried out;

the warning module is used for sending warning information to the vehicle;

further comprising: the third judging module is used for judging whether two adjacent vehicles are positioned in the same lane;

the method specifically comprises the following steps: the radio frequency communication module corresponding to the current vehicle detects lane information of the current vehicle, receives the lane information of the adjacent vehicle sent by the radio frequency communication module corresponding to the adjacent vehicle, and judges whether the two adjacent vehicles are in the same lane or not.

2. The highway traffic safety warning system according to claim 1, further comprising:

the pre-storing module is used for pre-storing basic information of each lane; the basic information of each lane comprises a safe driving distance between two adjacent vehicles, a first vehicle speed safety difference value and a second vehicle speed safety difference value between two adjacent vehicles.

3. The system of claim 2, wherein the information of the running vehicles detected in the detection module comprises vehicle type, vehicle speed, and lane information.

4. A method for warning safe driving on a highway is characterized by comprising a radio frequency communication module, a vehicle-mounted device and a shielding mechanism; the radio frequency communication module is in bidirectional wireless communication with the vehicle-mounted device; the radio frequency communication modules are arranged on the highway isolation belt at equal intervals, and the vehicle-mounted device is placed in a vehicle; the radio frequency communication module is horn-shaped and directionally receives and transmits wireless signals;

the method comprises the following steps:

s1, detecting information of a running vehicle in real time;

s2, judging whether the distance between two adjacent workshops is a safe driving distance or not according to the detected information;

the method specifically comprises the following steps: the radio frequency communication module compares the obtained RSSI value with the prestored RSSI values of the distances between each lane and the highway isolation belt so as to determine the lane information of the vehicle;

judging whether the vehicle distance between two adjacent vehicles is the safe driving distance or not, and if so, judging whether the vehicle speed difference between the two adjacent vehicles is greater than a first vehicle speed safety difference or not; if not, judging whether the speed difference value between two adjacent vehicles is greater than a second speed safety difference value;

s3, judging whether the speed difference between two adjacent vehicles is greater than a safety value; if yes, go to step S4;

the method specifically comprises the following steps: judging whether the speed difference between two adjacent vehicles is greater than a first speed safety difference, if so, sending warning information to the vehicles; if not, no processing is carried out;

judging whether the speed difference between two adjacent vehicles is greater than a second speed safety difference, if so, sending warning information to the vehicles; if not, no processing is carried out;

s4, sending out warning information to the vehicle;

the step S2 is preceded by: judging whether two adjacent vehicles are in the same lane or not;

the method specifically comprises the following steps: the radio frequency communication module corresponding to the current vehicle detects lane information of the current vehicle, receives the lane information of the adjacent vehicle sent by the radio frequency communication module corresponding to the adjacent vehicle, and judges whether the two adjacent vehicles are in the same lane or not.

5. The method for warning safe driving on a highway according to claim 4, wherein the step S1 is preceded by:

s0. pre-storing the basic information of each lane; the basic information of each lane comprises a safe driving distance between two adjacent vehicles, a first vehicle speed safety difference value and a second vehicle speed safety difference value between two adjacent vehicles.

6. The method for warning safe driving on an expressway according to claim 5, wherein the information of the driving vehicle detected in the step S1 comprises vehicle type, vehicle speed and lane information.

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