CN116778731B - Vehicle guiding system and vehicle guiding method under bad weather condition - Google Patents
Vehicle guiding system and vehicle guiding method under bad weather condition Download PDFInfo
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Abstract
The invention relates to a vehicle guiding system and a vehicle guiding method under bad weather conditions, wherein the system comprises a guiding prompt net, a signal sensing net and a guiding control module, the guiding prompt net comprises a plurality of prompt parts, the signal sensing net is used for collecting road signals, the guiding control module is used for firstly acquiring driving environment information and road surface condition information to obtain safe vehicle distances, then obtaining a plurality of adjacent guiding prompt sections and prompt parts corresponding to each guiding prompt section according to the safe vehicle distances, obtaining road signals, obtaining movement position information of a vehicle according to the road signals, and finally sending action signals to the prompt parts according to the position relation between the movement position information and the guiding prompt sections so as to enable the prompt parts to send guiding prompts. Compared with the prior art, the method solves the problems that the existing guiding method in bad weather has poor adaptability, is seriously affected by environment, is difficult to popularize, has poor stability and the like.
Description
Technical Field
The invention relates to the technical field of intelligent transportation, in particular to a vehicle guiding system and a vehicle guiding method under bad weather conditions.
Background
Bad weather seriously threatens the road driving safety and normal operation. Under bad weather conditions such as night, haze/heavy rain and the like, the visibility is low, the sight distance of a driver is reduced, front and rear vehicles, road outlines, marked lines and various traffic guiding marks are not easy to distinguish, and wrong operation is easy to occur under the condition that the distance between the front and rear vehicles, the speed of the vehicles and the like are not clear. In addition, some drivers have the habit of overspeed driving on roads, and accidents such as rear-end collision, rollover and the like are more easy to occur. Bad weather not only affects the traffic capacity of the road, but also threatens the life safety of drivers and other fellow passengers more seriously. Therefore, the method and the system for guiding the vehicles in severe weather are effective ways for ensuring safe running of the vehicles and improving traffic operation efficiency.
At present, the existing guiding method in bad weather mainly comprises the following steps: an electronic cable guiding system, a laser virtual guiding system, an inter-vehicle communication system, etc.
The electronic cable guiding system may guide the vehicle to travel by laying the electronic cable beside the road. The driver can drive according to the correct route in foggy days or at night only by driving according to the instructions on the map and the road sign. The system can improve the running safety of the vehicle to a great extent. However, if the road condition changes (e.g., the road suddenly narrows or the route suddenly changes), the electronic cable needs to be re-laid, resulting in too high cost and poor adaptability.
The laser virtual guiding system can simulate a virtual guiding line by laser projection on a front low fog layer. The system can scan roads, vehicles and pedestrians through the laser radar, so that the conditions of the roads and the surrounding areas can be mastered better, and the driving safety of a driver can be improved. Moreover, the system cost is relatively high; there is also a need to accommodate a variety of different optical environments, such as low brightness, weak reflection, and light scattering, where accuracy is susceptible to environmental influences.
Inter-vehicle communication systems may enable inter-vehicle guidance by inter-vehicle communication to assist vehicles in traveling in foggy days or nights. When a vehicle has a sight-blocking condition, the vehicle can inform the front condition to the rear vehicle through inter-vehicle communication, so that the rear vehicle can decelerate or avoid in advance. However, such a system requires fleet cooperation, and there are problems such as delay in communication between vehicles; the security of the communication system needs to be ensured. Even if the 5G technology is adopted, the problem of communication delay can be greatly reduced, but for vehicle-to-vehicle communication (V2V), a driver needs to use a hardware receiving end (mobile phone, etc.), or needs to download APP in advance, etc., so that the popularization is difficult, and the hardware itself can have the situation of sudden downtime. Moreover, depending on frequent communication between software and hardware, a series of problems, such as network service interruption or communication crosstalk, are also brought, and external interference is strong. If related software and hardware suddenly fail, the whole system is crashed, and the stability is poor.
In conclusion, the existing guiding method in bad weather has the problems of poor adaptability, serious environmental influence, difficult popularization, poor stability and the like. Therefore, a solution that has strong adaptability, strong anti-interference capability, easy popularization and can realize stable guidance of road vehicles is needed.
Disclosure of Invention
In view of the foregoing, it is necessary to provide a vehicle guidance under bad weather conditions, so as to solve the problems of poor adaptability, serious environmental impact, difficult popularization, poor stability and the like of the existing guidance method under bad weather conditions.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
In a first aspect, the present invention provides a vehicle guidance system under adverse weather conditions for guiding a vehicle traveling on a target road, the system comprising a guidance prompt network, a signal sensing network, and a guidance control module; the guiding prompt net comprises a plurality of prompt parts, the prompt parts are sequentially arranged on the target road along the travelling direction of the vehicle, each prompt part corresponds to a section of guiding prompt section in the target road, and the prompt parts are used for sending guiding prompts to vehicle drivers in the corresponding guiding prompt sections; the signal sensing network is arranged on the target road and is used for collecting road signals of the whole target road; the guiding control module is electrically connected with the guiding prompt network and the signal sensing network, and comprises an environment analysis module, a section dividing module, a road condition analysis module and a prompt control module, wherein:
the environment analysis module is used for acquiring driving environment information and road surface condition information and obtaining a safe vehicle distance;
The interval dividing module is used for obtaining a plurality of adjacent guiding prompt intervals in the target road and the prompt parts corresponding to the guiding prompt intervals according to the safe vehicle distance and the positions of the prompt parts;
the road condition analysis module is used for acquiring road signals and obtaining the movement position information of the vehicle according to the road signals;
The prompt control module is used for sending an action signal to the prompt part according to the position relation between the movement position information and the guiding prompt section so that the prompt part sends out guiding prompts.
Further, the target road is sequentially divided into a plurality of adjacent monitoring interval sections along the running direction of the vehicle, at least one prompting part is arranged on the road in each monitoring interval section, and the guiding prompting section comprises one or at least two adjacent monitoring interval sections.
Further, the monitoring section includes all lanes in the same driving direction in the target road in the width direction along the target road.
Further, the prompting parts are fog lamps, one monitoring interval is provided with two prompting parts, the two prompting parts are arranged at the front end of the monitoring interval along the driving direction, and the two prompting parts are respectively positioned at the two sides of the monitoring interval along the width direction of the target road.
Further, the information sensing network comprises at least one of an optical fiber sensing network, an electric sensing network and a magnetic sensing network, the laying position of the information sensing network comprises at least one of a road side, a road surface, a road bottom and a green belt, and the sensing range of the information sensing network covers all the target roads.
In a second aspect, the present invention also provides a vehicle guidance method under bad weather conditions, applied to the vehicle guidance system under bad weather conditions described in any one of the above, the method comprising:
acquiring driving environment information and road surface condition information to obtain a safe vehicle distance;
according to the safe distance between vehicles and the position of the prompting part, a plurality of adjacent guiding prompting sections in the target road and the prompting part corresponding to each guiding prompting section are obtained;
Acquiring a road signal, and obtaining the movement position information of a vehicle according to the road signal;
And sending an action signal to the prompting part according to the position relation between the movement position information and the guiding prompting section so as to enable the prompting part to send out guiding prompting.
Further, a plurality of adjacent monitoring interval sections are sequentially divided along the running direction of the vehicle on the target road, at least one prompting part is arranged on the road in each monitoring interval section, and the guiding prompting section comprises one or at least two adjacent monitoring interval sections; the step of obtaining a plurality of adjacent guiding prompt intervals in the target road and the prompt parts corresponding to the guiding prompt intervals according to the safe distance between vehicles and the positions of the prompt parts comprises the following steps:
Obtaining a section combination value according to the safety vehicle distance and the length of the monitoring section;
Combining a plurality of adjacent monitoring interval sections according to the interval combination value to obtain a plurality of adjacent guiding prompt intervals and the prompt parts corresponding to the guiding prompt intervals;
the prompting part positioned at the front end of the guiding prompting section along the driving direction is the prompting part corresponding to the guiding prompting section.
Further, the sending an action signal to the presenting part according to the position relationship between the movement position information and the guiding presenting section so that the presenting part sends out guiding presenting, includes:
obtaining the position information of each vehicle in the target road according to the movement position information;
Judging whether vehicles exist in the adjacent guiding prompt section of the front side of the target guiding prompt section along the driving direction according to the position information of each vehicle, and obtaining a judging result;
And sending an action signal to the prompting part according to the judging result so as to enable the prompting part to send out a guiding prompt.
Further, the judging result comprises that vehicles exist in a front section and vehicles do not exist in the front section; and sending an action signal to the prompting part according to the judging result so as to enable the prompting part to send out a guiding prompt, wherein the method comprises the following steps:
If the judgment result shows that the vehicle exists in the front section, an action signal is sent to the prompting part, so that the prompting part sends out a warning signal, and the warning signal is used for prompting a vehicle driver to decelerate and stop when the vehicle driver runs to the end part of the target guiding prompting section;
and if the judgment result shows that the vehicle does not exist in the front section, sending an action signal to the prompting part, so that the prompting part sends a traffic signal, and the traffic signal is used for prompting a vehicle driver to normally run.
Further, the prompting part is a multicolor fog lamp, and the warning signal and the passing signal are respectively light with different colors.
The invention provides a vehicle guiding system and a vehicle guiding method under bad weather conditions, wherein the system comprises a guiding prompt net, a signal sensing net and a guiding control module, the guiding prompt net comprises a plurality of prompt parts corresponding to guiding prompt intervals one by one, the signal sensing net is used for collecting road signals, the guiding control module is used for firstly acquiring driving environment information and road surface condition information to obtain safe vehicle distances, then according to the safe vehicle distances and the positions of the prompt parts, a plurality of adjacent guiding prompt intervals in a target road and the prompt parts corresponding to each guiding prompt interval are obtained, road signals are obtained, and according to the road signals, movement position information of a vehicle is obtained, and finally according to the position relation between the movement position information and the guiding prompt intervals, action signals are sent to the prompt parts so that the prompt parts send guiding prompts. Compared with the prior art, the invention has at least the following advantages:
1. when the road condition changes, the invention does not need to reset the guiding prompt net, and only needs to adjust the operation logic in the guiding control module, so that the construction cost is low and the adaptability is strong;
2. According to the invention, the prompt part directly sends out simple prompt to the driver without forming complex prompt signals such as virtual guide lines, so that the influence of the environment is lower and the stability is higher;
3. The invention can work by setting the guide control module without setting in the client hardware such as a vehicle system or a driver mobile phone, so that the driver can enjoy the service without paying extra cost, and the invention is easy to popularize;
4. the invention does not need to exchange data with the vehicle during working, the whole process from sensing to prompting can be independently completed by the system, closed loop is realized, the working of the whole system is not affected when one side of the vehicle fails, and the problems of delay, signal error, poor anti-interference capability, poor stability and the like caused by communication are solved.
Drawings
FIG. 1 is a system architecture diagram of one embodiment of a vehicle guidance system in adverse weather conditions provided by the present invention;
FIG. 2 is a schematic diagram illustrating one embodiment of a vehicle guidance system under adverse weather conditions according to the present invention;
FIG. 3 is a schematic diagram illustrating another embodiment of a vehicle guidance system under adverse weather conditions according to the present invention;
FIG. 4 is a schematic illustration of yet another embodiment of a vehicle guidance system under adverse weather conditions provided by the present invention;
FIG. 5 is a schematic diagram illustrating another embodiment of a vehicle guidance system under adverse weather conditions according to the present invention;
FIG. 6 is a flow chart of an embodiment of a method for guiding a vehicle in bad weather conditions according to the present invention;
fig. 7 is a flowchart of a method of step S604 in fig. 6.
Detailed Description
The following detailed description of preferred embodiments of the application is made in connection with the accompanying drawings, which form a part hereof, and together with the description of the embodiments of the application, are used to explain the principles of the application and are not intended to limit the scope of the application.
It is to be understood that the following technical terms, acronyms, and the like are all prior art and should not be construed as being excessive for reasons of brevity.
In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The invention collects road signals through the signal sensing network to judge the vehicle position, and then prompts the driver of the vehicle in the corresponding guiding prompt section through the prompt part, thereby realizing the guiding of the vehicle under bad weather conditions.
The present invention provides a vehicle guidance system and a vehicle guidance method in bad weather conditions, which are described below.
Referring to fig. 1 to 5, in one embodiment of the present invention, a vehicle guidance system for guiding a vehicle traveling on a target road under bad weather conditions is disclosed, the system including a guidance prompt network 110, a signal sensing network 120, and a guidance control module 130.
The guiding and prompting net 110 includes a plurality of prompting portions 111, the plurality of prompting portions 111 are sequentially disposed on the target road along the traveling direction of the vehicle, each prompting portion 111 corresponds to a section of guiding and prompting section in the target road, and the prompting portion 111 is configured to send guiding and prompting to a driver of the vehicle in the corresponding guiding and prompting section; the signal sensor network 120 is disposed on the target road, and is configured to collect road signals of the entire target road; the guidance control module 130 is electrically connected to the guidance prompt network 110 and the signal sensing network 120, and the guidance control module 130 includes an environment analysis module 131, a section dividing module 132, a road condition analysis module 133 and a prompt control module 134, where:
The environment analysis module 131 is configured to obtain driving environment information and road surface condition information, so as to obtain a safe vehicle distance;
The section dividing module 132 is configured to obtain a plurality of adjacent guidance prompt sections in the target road and the prompt section 111 corresponding to each guidance prompt section according to the safe distance between vehicles and the position of the prompt section 111;
The road condition analysis module 133 is configured to obtain a road signal, and obtain movement position information of a vehicle according to the road signal;
The presentation control module 134 is configured to send an action signal to the presenting part 111 according to the positional relationship between the movement position information and the guidance presenting section, so that the presenting part 111 sends a guidance presentation.
The system forms a guiding array (a fog lamp array in the following specific embodiment) by taking the guiding prompting net 110 as an output module, and is used for prompting a driver to control the vehicle, indirectly enabling the vehicle to interact with the system, controlling the vehicle to stop and go by adopting a guiding prompting section, and realizing guiding of the vehicle under bad weather for vehicle operation management service.
It should be noted that, in the present embodiment, the driving directions of the vehicles in the target road are the same, for example, in fig. 2 to 5, each picture includes two target roads with opposite driving directions. The guidance presentation section in the present embodiment is a section of the target road, and when the vehicle is located in the guidance presentation section, the driver can receive the guidance presentation by the presentation unit 111 no matter where the vehicle is located. When the guidance prompt section is too large, a plurality of prompt sections 111 may be provided in the guidance prompt section, and the plurality of prompt sections 111 perform the same operation to ensure that the driver can normally observe or feel the prompt.
In a preferred embodiment, the target road is divided into a plurality of adjacent monitoring intervals along the running direction of the vehicle, each road in the monitoring intervals is provided with at least one prompting part 111, and the guiding prompting interval comprises one or at least two adjacent monitoring intervals.
In this embodiment, the target road is divided into monitoring intervals of a fixed length, and the guidance prompt interval may be composed of a plurality of monitoring intervals. On the one hand, the fixed monitoring interval section can be fixedly provided with a prompt part 111, so that planning construction of the prompt part 111 is facilitated, on the other hand, the length of the guiding prompt interval is determined by the braking distance and the length of a later vehicle, and then the guiding prompt interval is used as a safe distance, so that only one vehicle is allowed to pass within one safe distance (namely the guiding prompt interval).
The length of the guiding prompt section is determined according to actual conditions, and can be flexibly and manually adjusted, and is not fixed to be the length of one monitoring section. For example, in the case where ice and snow or the like seriously affect the braking distance, a plurality of continuous monitoring sections may be combined into one guidance presenting section, and the presenting section 111 that allows all the positions to be observed in the guidance presenting section, that is, the presenting section 111 corresponding to the present guidance presenting section may be used.
Further, in a preferred embodiment, the monitoring section includes all lanes of the same driving direction in the target road in a width direction along the target road. Therefore, only one vehicle is allowed to pass at the same time in the same monitoring interval or the same guiding prompt interval, and accidents caused by the events of lane changing, out-of-control slipping and the like of the vehicle are prevented.
In a preferred embodiment, the prompting portion 111 is a fog lamp, one monitoring section is provided with two prompting portions 111, the two prompting portions 111 are both disposed at front ends of the monitoring section along the driving direction, and the two prompting portions 111 are respectively disposed at two sides of the monitoring section along the width direction of the target road. In this way, the presenting part 111 can be observed at any position in the monitoring section, and when the guidance presenting section is constituted by a plurality of monitoring sections, the presenting part 111 at the forefront in the vehicle running direction can be regarded as the presenting part 111 corresponding to the guidance presenting section.
The front and rear ends in the embodiment are the front ends in the driving direction, that is, the direction in which the vehicle head faces in the monitoring section or the guiding prompt section, and the rear ends are the same with each other, with respect to the driving direction of the vehicle.
In this embodiment, a fog lamp is used as the prompting portion 111, and the fog lamp is an additional lighting device installed at the front part of the automobile and is used for providing better visibility in severe weather conditions. They are able to penetrate suspended particulate matter in the atmosphere of fog, rain, snow, etc. It is to be understood that, in practice, other conventional devices capable of presenting the driver in a severe environment may be used as the presenting part 111, for example, devices capable of emitting sound such as a buzzer, depending on the specific situation.
It should be understood that the guidance prompt net 110 includes some other devices for the prompt unit 111 to operate, such as cables, connectors, etc., in addition to the prompt unit 111, which are known to those skilled in the art, and will not be described herein.
In a preferred embodiment, the information sensing network comprises at least one of an optical fiber sensing network, an electrical sensing network and a magnetic sensing network, the laying position of the information sensing network comprises at least one of a road side, a road surface, a road bottom and a green belt, and the sensing range of the information sensing network covers all the target roads.
The invention does not limit the specific implementation form of the information sensing network, and only needs to realize the real-time sensing function of the vehicle. Similarly, the guidance control module 130 may be implemented in any existing base station, host computer, control center, etc., and the information sensing network and the guidance control module 130 are known to those skilled in the art, so they will not be described herein.
Specifically, in a preferred embodiment, one specific operation of the vehicle guidance system in the present bad weather condition is as shown in fig. 2 to 5:
FIG. 2 is a schematic illustration of two vehicles traveling normally in different directions of travel;
FIG. 3 is a schematic illustration of vehicle heel-off occurring in two directions;
Fig. 4 is a schematic diagram of a situation when there are other vehicles in a section ahead of the guidance prompt section of the current vehicle (when the current vehicle does not reach the edge of the guidance prompt section where it is located, and is traveling at a reduced speed);
Fig. 5 is another schematic diagram of the case when there is another vehicle in the section ahead of the guidance prompt section of the current vehicle (when the current vehicle reaches the edge of the guidance prompt section where it is located, stop waiting).
The invention provides a continuous long-distance non-blind area vehicle guiding system under bad weather, which is suitable for severe monitoring environment, based on the signal sensing network 120, adopts a driving management and control mode, can realize wired closed-loop control of vehicles, has low signal delay and high stability, is not interfered by external environment, has high safety, does not need popularization in drivers, and has low erection cost. The road traffic control system can solve the problem of traffic of the vehicle road at night and in environments such as fog/haze/heavy rain, effectively reduce accident occurrence rate and improve road operation monitoring, management efficiency and safety.
In connection with fig. 6, in order to better implement the present invention, the present invention also provides a vehicle guidance method under bad weather conditions, which is applied to the vehicle guidance system under any one of the above bad weather conditions, the method comprising:
s601, acquiring driving environment information and road surface condition information to obtain a safe vehicle distance;
s602, obtaining a plurality of adjacent guiding prompt intervals in the target road and the prompt parts corresponding to the guiding prompt intervals according to the safe vehicle distance and the positions of the prompt parts;
s603, acquiring a road signal, and obtaining the movement position information of the vehicle according to the road signal;
S604, according to the position relation between the movement position information and the guiding prompt section, sending an action signal to the prompt part so that the prompt part sends out guiding prompt.
The implementation principle and effect of the above process can be referred to the foregoing description, and will not be repeated here.
In the step S601, the driving environment information and the road surface condition information are obtained, and the safe distance is the distance that can prevent rear-end collision of the rear vehicle, and can be adjusted according to specific conditions, such as factors of weather, road surface humidity, snow accumulation and the like, and how to obtain the safe distance is the prior art, and is not described in detail herein.
In a preferred embodiment, the target road is divided into a plurality of adjacent monitoring interval sections along the running direction of the vehicle, the road in each monitoring interval section is provided with at least one prompting part, and the guiding prompting section comprises one or at least two adjacent monitoring interval sections; step S602, according to the safe distance between vehicles and the position of the presenting part, obtains a plurality of adjacent guiding presenting intervals in the target road, and the presenting part corresponding to each guiding presenting interval, specifically including:
Obtaining a section combination value according to the safety vehicle distance and the length of the monitoring section;
Combining a plurality of adjacent monitoring interval sections according to the interval combination value to obtain a plurality of adjacent guiding prompt intervals and the prompt parts corresponding to the guiding prompt intervals;
the prompting part positioned at the front end of the guiding prompting section along the driving direction is the prompting part corresponding to the guiding prompting section.
In the above process, the length of the guiding prompt section formed by the final plurality of monitoring section sections is only required to be ensured to be larger than or equal to the safety vehicle distance.
In a preferred embodiment, in step S603, a road signal is obtained, and the motion position information of the vehicle is obtained according to the road signal, where the specific form of the road signal may be a vibration signal, an optical signal, a digital signal, or the like, according to the actually adopted signal sensing network. The final processing result, i.e. the movement position information, may include information such as position coordinates, vehicle speed, vehicle weight, etc., and the specific processing method is the prior art, which is not described herein too much.
Further, in a preferred embodiment, as shown in fig. 7, the step S604 of sending an action signal to the presenting part according to the positional relationship between the movement position information and the guidance presenting section so as to cause the presenting part to send a guidance presenting specifically includes:
s701, obtaining the position information of each vehicle in the target road according to the movement position information;
S702, judging whether vehicles exist in adjacent guiding prompt intervals of the front side of the target guiding prompt interval along the driving direction according to the position information of each vehicle, and obtaining a judging result;
And S703, according to the judging result, sending an action signal to the prompting part so as to enable the prompting part to send out a guiding prompt.
Specifically, in a preferred embodiment, the determination result includes a front section existence vehicle and a front section non-existence vehicle; and sending an action signal to the prompting part according to the judging result so as to enable the prompting part to send out a guiding prompt, wherein the method comprises the following steps:
If the judgment result shows that the vehicle exists in the front section, an action signal is sent to the prompting part, so that the prompting part sends out a warning signal, and the warning signal is used for prompting a vehicle driver to decelerate and stop when the vehicle driver runs to the end part of the target guiding prompting section;
and if the judgment result shows that the vehicle does not exist in the front section, sending an action signal to the prompting part, so that the prompting part sends a traffic signal, and the traffic signal is used for prompting a vehicle driver to normally run.
Specifically, in a preferred embodiment, the prompting portion is a multicolor fog lamp, and the warning signal and the passing signal are respectively different-color lights.
The present invention also provides a more detailed embodiment for more clearly describing the steps S701 to S703:
in the present embodiment, a specific control scheme of the vehicle guidance system in bad weather conditions is as follows:
Firstly, the system actively adjusts the length of the guiding prompt section according to the actual driving environment and road surface condition (namely the driving environment information and the road surface condition information), for example, under the severe weather such as ice and snow, more continuous monitoring section sections are divided and combined into a new guiding prompt section.
And secondly, the information sensing network acquires vibration signals (namely the road signals) of the vehicle in each guiding prompt section and sends the vibration signals to the guiding control module, and the guiding control module carries out logic processing according to the vibration signals of the vehicle and information such as mileage acquired by related sensors and calculates the real-time position and speed (namely the movement position information) of the vehicle.
Finally, the guiding control module sends the position information to the guiding prompt net in a control instruction mode, and the guiding prompt net changes the color of a specific signal lamp (namely, the guiding prompt) according to the corresponding relation between the vehicle position information and the guiding prompt section, so as to control the vehicle to stop and go.
Specifically, the specific hint strategy is as follows:
1. After the current vehicle enters a certain guiding prompt section, the prompt part corresponding to the section behind the guiding prompt section where the current vehicle is positioned turns red (namely, a warning signal) so as to warn the subsequent vehicle, so as to prompt the driver of the vehicle to decelerate, and stop when the current vehicle runs to the edge of the current guiding prompt section.
2. After the current vehicle exits the guiding prompt section, the rear prompt part turns green (i.e. traffic signal), and the following vehicle can continue to run.
The invention provides a vehicle guiding system and a vehicle guiding method under bad weather conditions, wherein the system comprises a guiding prompt net, a signal sensing net and a guiding control module, the guiding prompt net comprises a plurality of prompt parts corresponding to guiding prompt intervals one by one, the signal sensing net is used for collecting road signals, the guiding control module is used for firstly acquiring driving environment information and road surface condition information to obtain safe vehicle distances, then according to the safe vehicle distances and the positions of the prompt parts, a plurality of adjacent guiding prompt intervals in a target road and the prompt parts corresponding to each guiding prompt interval are obtained, road signals are obtained, and according to the road signals, movement position information of a vehicle is obtained, and finally according to the position relation between the movement position information and the guiding prompt intervals, action signals are sent to the prompt parts so that the prompt parts send guiding prompts. Compared with the prior art, the invention has at least the following advantages:
1. when the road condition changes, the invention does not need to reset the guiding prompt net, and only needs to adjust the operation logic in the guiding control module, so that the construction cost is low and the adaptability is strong;
2. According to the invention, the prompt part directly sends out simple prompt to the driver without forming complex prompt signals such as virtual guide lines, so that the influence of the environment is lower and the stability is higher;
3. The invention can work by setting the guide control module without setting in the client hardware such as a vehicle system or a driver mobile phone, so that the driver can enjoy the service without paying extra cost, and the invention is easy to popularize;
4. the invention does not need to exchange data with the vehicle during working, the whole process from sensing to prompting can be independently completed by the system, closed loop is realized, the working of the whole system is not affected when one side of the vehicle fails, and the problems of delay, signal error, poor anti-interference capability, poor stability and the like caused by communication are solved.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. A vehicle guidance system in bad weather conditions, the system comprising a guidance prompt network, a signal sensing network and a guidance control module; the guiding prompt net comprises a plurality of prompt parts, the prompt parts are sequentially arranged on a target road along the travelling direction of the vehicle, each prompt part corresponds to a section of guiding prompt section in the target road, and the prompt parts are used for sending guiding prompts to vehicle drivers in the corresponding guiding prompt sections; the signal sensing network is arranged on the target road and is used for collecting road signals of the whole target road; the guiding control module is electrically connected with the guiding prompt network and the signal sensing network, and comprises an environment analysis module, a section dividing module, a road condition analysis module and a prompt control module, wherein:
the environment analysis module is used for acquiring driving environment information and road surface condition information and obtaining a safe vehicle distance;
The interval dividing module is used for obtaining a plurality of adjacent guiding prompt intervals in the target road and the prompt parts corresponding to the guiding prompt intervals according to the safe vehicle distance and the positions of the prompt parts;
the road condition analysis module is used for acquiring road signals and obtaining the movement position information of the vehicle according to the road signals;
The prompt control module is used for sending an action signal to the prompt part according to the position relation between the movement position information and the guiding prompt section so that the prompt part sends out guiding prompts; the road in each monitoring interval section is provided with at least one prompting part, and the guiding prompting section comprises one or at least two adjacent monitoring interval sections;
The step of obtaining a plurality of adjacent guiding prompt intervals in the target road and the prompt parts corresponding to the guiding prompt intervals according to the safe distance between vehicles and the positions of the prompt parts comprises the following steps:
Obtaining a section combination value according to the safety vehicle distance and the length of the monitoring section;
Combining a plurality of adjacent monitoring interval sections according to the interval combination value to obtain a plurality of adjacent guiding prompt intervals and the prompt parts corresponding to the guiding prompt intervals;
the prompting part positioned at the front end of the guiding prompting section along the driving direction is the prompting part corresponding to the guiding prompting section.
2. The system according to claim 1, wherein the monitoring section includes all lanes of the same driving direction in the target road in a width direction along the target road.
3. The vehicle guidance system according to claim 2, wherein the prompting portion is a fog lamp, two prompting portions are provided in one of the monitoring section, the two prompting portions are provided at front ends of the monitoring section in a traveling direction, and the two prompting portions are respectively located at both sides of the monitoring section in the width direction of the target road.
4. The vehicle guidance system according to claim 1, wherein the signal sensor network includes at least one of an optical fiber sensor network, an electrical sensor network, and a magnetic sensor network, the laying position of the signal sensor network includes at least one of a road side, a road surface, a road bottom, and a green belt, and the sensing range of the signal sensor network covers all of the target roads.
5. A vehicle guidance method under bad weather conditions, applied to the vehicle guidance system under bad weather conditions according to any one of claims 1 to 4, characterized in that the method comprises:
acquiring driving environment information and road surface condition information to obtain a safe vehicle distance;
according to the safe distance between vehicles and the position of the prompting part, a plurality of adjacent guiding prompting sections in the target road and the prompting part corresponding to each guiding prompting section are obtained;
Acquiring a road signal, and obtaining the movement position information of a vehicle according to the road signal;
sending an action signal to the prompting part according to the position relation between the movement position information and the guiding prompting section so as to enable the prompting part to send out guiding prompting;
The road in each monitoring interval section is provided with at least one prompting part, and the guiding prompting section comprises one or at least two adjacent monitoring interval sections; the step of obtaining a plurality of adjacent guiding prompt intervals in the target road and the prompt parts corresponding to the guiding prompt intervals according to the safe distance between vehicles and the positions of the prompt parts comprises the following steps:
Obtaining a section combination value according to the safety vehicle distance and the length of the monitoring section;
Combining a plurality of adjacent monitoring interval sections according to the interval combination value to obtain a plurality of adjacent guiding prompt intervals and the prompt parts corresponding to the guiding prompt intervals;
the prompting part positioned at the front end of the guiding prompting section along the driving direction is the prompting part corresponding to the guiding prompting section.
6. The method according to claim 5, wherein the step of transmitting an action signal to the presenting unit to cause the presenting unit to issue a guidance prompt according to the positional relationship between the movement position information and the guidance prompt section includes:
obtaining the position information of each vehicle in the target road according to the movement position information;
Judging whether vehicles exist in the adjacent guiding prompt section of the front side of the target guiding prompt section along the driving direction according to the position information of each vehicle, and obtaining a judging result;
And sending an action signal to the prompting part according to the judging result so as to enable the prompting part to send out a guiding prompt.
7. The method for guiding a vehicle under bad weather conditions according to claim 6, wherein the determination result includes a front section existence vehicle and a front section non-existence vehicle; and sending an action signal to the prompting part according to the judging result so as to enable the prompting part to send out a guiding prompt, wherein the method comprises the following steps:
If the judgment result shows that the vehicle exists in the front section, an action signal is sent to the prompting part, so that the prompting part sends out a warning signal, and the warning signal is used for prompting a vehicle driver to decelerate and stop when the vehicle driver runs to the end part of the target guiding prompting section;
and if the judgment result shows that the vehicle does not exist in the front section, sending an action signal to the prompting part, so that the prompting part sends a traffic signal, and the traffic signal is used for prompting a vehicle driver to normally run.
8. The method according to claim 7, wherein the prompting portion is a multicolor fog lamp, and the warning signal and the traffic signal are lights of different colors, respectively.
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