CN111210630A - Piezoelectric pavement-based vehicle traffic state self-perception early warning system and method - Google Patents
Piezoelectric pavement-based vehicle traffic state self-perception early warning system and method Download PDFInfo
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Abstract
The invention discloses a piezoelectric pavement-based vehicle traffic state self-perception early warning system and method, wherein the early warning system comprises: the system comprises a piezoelectric road surface sensing terminal, a vehicle-mounted terminal, a roadside terminal, an image acquisition terminal, a data processing terminal and a traffic police law enforcement terminal; the piezoelectric pavement sensing end, the vehicle-mounted terminal and the image acquisition end are all in communication connection with the road side terminal, and the road side terminal is in communication connection with the traffic police law enforcement terminal through the data processing terminal. According to the invention, the abnormal behaviors of the vehicle can be sensed through the piezoelectric road surface, wherein the abnormal behaviors comprise vehicle overload, vehicle overspeed, vehicle overrun, abnormal vehicle running, road congestion and vehicle unbalance loading; and the driver is reminded to eliminate the related abnormal behavior by transmitting the signal to the data processing terminal and the vehicle-mounted terminal and through the traffic police law enforcement terminal and the vehicle-mounted terminal. The system can effectively warn and form a corresponding feedback mechanism, so that the traffic driving is safe and smooth, and the development direction of the intelligent road surface is met.
Description
Technical Field
The invention relates to the field of vehicle traffic state perception early warning, in particular to a vehicle traffic state self-perception early warning system and method based on a piezoelectric road surface.
Background
Road congestion seriously troubles the urbanization process of high-speed development, and frequent traffic accidents also seriously threaten the life safety of people. The ten accidents are nine times fast, overspeed driving can affect the safety performance of a vehicle, timely and accurate operation of a driver is affected, the fatigue degree of the driver is increased, judgment of the driver on the speed is reduced, the braking distance is prolonged due to the speed of the vehicle, and serious traffic accidents can be caused. In addition, it is statistical that more than 80% of truck road traffic accidents are due to overrun overload traffic. The high-frequency and large-tonnage vehicle load greatly exceeds the design load standard of the road and the bridge, so that the road and the bridge are seriously damaged and the catastrophic structural damage and destruction are caused, and great potential safety hazard is brought. According to literature data, more than half of traffic accidents occur within 10min of abnormal driving behaviors of vehicles, and if the abnormal driving behaviors can be sensed and early warned in time, the traffic accidents can be well reduced and avoided.
Aiming at the problem of vehicle overload, devices such as wagon balance and the like are mainly arranged at a main barrier at present, but normal traffic can be influenced, and traffic jam is caused to a certain degree; aiming at the overspeed problem, a crossing speed meter is mainly used for speed measurement, but the method is only used for later stage evidence collection, manual law enforcement is still required for speed reduction, and the function of early warning in time cannot be achieved; aiming at the problem of overrun, a limiting rod and the like are mainly adopted, but the vehicle can be clamped or turned around temporarily to influence the normal passing of the vehicle. Aiming at the abnormal running of the vehicle, the vehicle only stays in the aspects of video and manual monitoring, so that the rapid early warning is difficult and the abnormal behaviors are eliminated.
The intelligent highway aims to realize the guidance and diversion of traffic flow on time and space through the collection and transmission of traffic information, avoid highway congestion, enhance the safety of highway users, reduce traffic accidents, improve the traffic and transportation environment of the highway and ensure that vehicles and drivers and passengers can safely, quickly, smoothly and comfortably run on the highway.
However, the current self-perception early warning system for abnormal vehicle behaviors facing to the intelligent road is still not perfect, and no complete system is provided for the abnormal vehicle driving behaviors.
Disclosure of Invention
Aiming at the problems of untimely monitoring and early warning of the current vehicle traffic state, imperfect system and the like, the invention provides a vehicle traffic state self-perception early warning system and method based on a piezoelectric road surface, which can effectively early warn, stop in time and ensure the safety and smoothness of traffic.
In order to achieve the purpose, the invention adopts the following technical scheme:
a vehicle traffic state self-perception early warning system based on a piezoelectric pavement comprises: the system comprises a piezoelectric road surface sensing terminal, a vehicle-mounted terminal, a roadside terminal, an image acquisition terminal, a data processing terminal and a traffic police law enforcement terminal;
the piezoelectric road surface sensing end is used for sensing the driving state of the vehicle through a piezoelectric sheet embedded in a road surface layer to obtain a voltage signal; the piezoelectric pavement sensing end is connected with the road side terminal;
the road side terminals are arranged on two sides of each road section and used for collecting voltage signals of the piezoelectric road surface sensing end and converting the voltage signals into vehicle body information and driving information of the vehicle so as to judge whether the vehicle has abnormal behaviors; the abnormal behaviors comprise vehicle overload, vehicle overspeed, vehicle overrun, abnormal vehicle running, road congestion and vehicle unbalance loading; simultaneously, the vehicle abnormal behavior signal is communicated with the data processing terminal and the vehicle-mounted terminal, and the vehicle abnormal behavior signal is transmitted to the data processing terminal and the vehicle-mounted terminal in real time;
the vehicle-mounted terminal is arranged in a vehicle and used for realizing comprehensive dynamic sensing and communication of traffic information;
the image acquisition end is arranged on a road and used for shooting vehicle violation, and the shot image is used for judging vehicle overrun; the image acquisition end transmits the image signal to the road side terminal;
the data processing terminal is used for transmitting the vehicle abnormal behavior signal to a traffic police law enforcement terminal for enforcing the law of a nearby road section;
and the traffic police law enforcement terminal is used for communicating with the road side terminal, the image acquisition terminal and the data processing terminal so as to acquire the traffic state information of the vehicle.
The roadside terminal is used for vehicle overload self-perception early warning, and specifically comprises the following components:
and amplifying the voltage signal, converting the amplified voltage signal into the axle load and the gross weight of the vehicle, comparing the actual load capacity of the vehicle with the vehicle-mounted allowable load capacity and the load capacity allowed by the rule, and sending an overload signal if the actual load capacity of the vehicle exceeds the allowable value.
The roadside terminal is used for vehicle overspeed self-perception early warning, and specifically comprises:
and calculating the speed of the vehicle according to the time difference of the voltages generated by the front piezoelectric sensing piece and the rear piezoelectric sensing piece, comparing the actual speed of the vehicle with the intersection speed limit value of the road section in the time period, and sending an overspeed signal if the vehicle is overspeed.
The roadside terminal is used for vehicle transfinite self-perception early warning, and specifically comprises the following components:
acquiring a vehicle image according to an image acquisition end, calculating the actual height and width of the vehicle through image processing, and if the actual height and width of the vehicle is greater than the height and width specified by the vehicle model, sending out an overrun warning;
if the height and width of the vehicle meet the vehicle model regulation but are smaller than the vehicle height limit or width limit of the front road section, the road side terminal sends an overrun signal to the vehicle-mounted terminal, the vehicle-mounted terminal sends the overrun signal, and meanwhile, the navigation system conducts navigation on a feasible road section to avoid the height-limited and width-limited road sections.
The roadside terminal is used for self-perception early warning of abnormal driving tracks of the vehicle, and specifically comprises the following steps:
and (3) forming a vehicle running track line by voltage signals generated by the continuous running of the vehicle, judging whether the vehicle runs abnormally or not according to the curve degree of the vehicle running track line and the traffic running rule of the road section, and sending an abnormal running signal if the vehicle runs abnormally.
The roadside terminal is used for self-perception early warning of road congestion conditions, and specifically comprises the following steps:
and calculating the speed of the vehicle according to the time difference of the voltages generated by the front piezoelectric sensing piece and the rear piezoelectric sensing piece, carrying out data analysis on the speed signal of the vehicle passing through the road section, and estimating the congestion degree of the road section according to the average speed of the vehicle to obtain the congestion condition information of the road section.
The roadside terminal is used for vehicle unbalance loading self-perception early warning, and specifically comprises the following components:
and judging whether the vehicle is in unbalanced load according to the voltage signals at two sides of the road, and if so, sending a vehicle unbalanced load signal.
A pre-warning method for vehicle traffic state self-perception pre-warning based on a piezoelectric road surface comprises the following steps:
1) vehicle overload self-sensing early warning
When a vehicle enters the sensing area, the piezoelectric road surface sensing end generates a voltage signal, the voltage signal is transmitted to the road side terminal, and the signal is converted into the axle weight and the total weight of the vehicle after being amplified; the vehicle-mounted terminal transmits the vehicle information to the road side terminal; the roadside terminal compares the actual load capacity of the vehicle with the vehicle-mounted allowable load capacity and the load capacity allowed by the traffic regulations, and if the actual load capacity of the vehicle exceeds the allowable value, the roadside terminal transmits the overload signal and the vehicle information to the data processing terminal and transmits the overload signal to the vehicle-mounted terminal; the data processing terminal transmits the vehicle signal to a traffic police law enforcement terminal for enforcement on a nearby road section; the vehicle-mounted terminal can also send an overload signal to remind a driver of the overload of the vehicle;
2) vehicle overspeed self-sensing early warning
When a vehicle enters the sensing area, the piezoelectric road surface sensing end generates a voltage signal and transmits the voltage signal to the road side terminal, and the road side terminal calculates the vehicle speed according to the time difference of the voltages generated by the front piezoelectric sensing piece and the rear piezoelectric sensing piece; meanwhile, the vehicle-mounted terminal transmits the vehicle information to the road side terminal; the roadside terminal compares the actual speed of the vehicle with the traffic regulation speed limit value of the road section in the time period, if the vehicle is overspeed, the roadside terminal transmits the overload signal and the vehicle information to the data processing terminal, and simultaneously transmits the overspeed signal to the vehicle-mounted terminal; the data processing terminal transmits the vehicle signal to a traffic police law enforcement terminal for enforcement on a nearby road section; the vehicle-mounted terminal can also send an overspeed signal to remind a driver of overspeed of the vehicle;
3) vehicle overrun self-sensing early warning
When a vehicle enters the sensing area, the image acquisition end acquires a vehicle image and transmits the vehicle image to the roadside terminal, and the roadside terminal calculates the actual height and width of the vehicle through image processing; meanwhile, the vehicle-mounted terminal transmits the vehicle information to the road side terminal; if the actual height and width of the vehicle are larger than the height and width specified by the vehicle model, the roadside terminal sends the overrun signal to the data processing terminal and the vehicle-mounted terminal; the data processing terminal sends the vehicle violation overrun signal to a traffic police law enforcement terminal at a nearby intersection, and the vehicle-mounted terminal sends out overrun warning;
4) self-sensing and early warning for abnormal running track of vehicle
When a vehicle enters the sensing area, the piezoelectric road surface sensing end generates a voltage signal, and the voltage signal for continuous vehicle running forms a vehicle running track line; the roadside terminal judges whether the vehicle runs abnormally according to the degree of curve of the vehicle running track line and the traffic running rule of the road section; if abnormal running exists, the road side terminal transmits the vehicle abnormal running signal and the vehicle information to the data processing terminal, the vehicle-mounted terminal of the vehicle and the vehicle-mounted terminals of nearby vehicles; the data processing terminal transmits the abnormal vehicle driving signal to a traffic police law enforcement terminal for enforcement on a nearby road section; the vehicle-mounted terminal can also send out a vehicle abnormal driving signal to remind a driver of abnormal driving and other drivers around to pay attention to avoiding;
5) self-perception early warning for road congestion condition
When a vehicle enters the sensing area, the piezoelectric road surface sensing end generates a voltage signal and transmits the voltage signal to the road side terminal, and the road side terminal calculates the vehicle speed according to the time difference of the voltages generated by the front piezoelectric sensing piece and the rear piezoelectric sensing piece; carrying out data analysis on the vehicle speed signal passing through the road section, and transmitting data information to a data processing terminal; the data processing terminal carries out pre-estimation on the congestion degree of the road section according to the average speed; the data processing terminal transmits the road section congestion condition to the navigation system and the road side terminal;
6) self-sensing and early warning for vehicle unbalance loading
When a vehicle enters the sensing area, the piezoelectric road surface sensing end generates a voltage signal and transmits the voltage signal to the road side terminal, and the road side terminal judges whether the vehicle is in unbalanced load or not according to the voltage signals on the two sides; if the vehicle is in the unbalanced load state, the roadside terminal transmits the unbalanced load signal and the vehicle information to the data processing terminal and simultaneously transmits the unbalanced load signal to the vehicle-mounted terminal; the data processing terminal transmits the vehicle signal to a traffic police law enforcement terminal for enforcement on a nearby road section; the vehicle-mounted terminal can also send an unbalance loading signal to remind a driver to stop at the side to eliminate the unbalance loading hidden trouble.
As a further improvement of the invention, after the vehicle is decelerated, the vehicle drives into the next piezoelectric sensing area, and if the vehicle does not overspeed, the overspeed alarm signal of the vehicle-mounted terminal is eliminated.
As a further improvement of the invention, if the height and width of the vehicle meet the vehicle model regulation but are smaller than the vehicle height limit or width limit of the front road section, the roadside terminal sends an overrun signal to the vehicle-mounted terminal, the vehicle-mounted terminal sends the overrun signal, and the navigation system can perform the navigation of the feasible road section and avoid the height-limited and width-limited road sections;
the navigation system can plan a reasonable route according to the requirement of a customer destination, and the road side terminal can transmit the congestion condition of the road section in front to the vehicle-mounted terminal and remind a driver of reasonably selecting a running route.
Compared with the prior art, the invention has the following advantages:
according to the invention, the abnormal behaviors of the vehicle can be sensed through the piezoelectric road surface, wherein the abnormal behaviors comprise vehicle overload, vehicle overspeed, vehicle overrun, abnormal vehicle running, road congestion and vehicle unbalance loading; and the driver is reminded to eliminate the related abnormal behavior by transmitting the signal to the data processing terminal and the vehicle-mounted terminal and through the traffic police law enforcement terminal and the vehicle-mounted terminal. The system can effectively warn and form a corresponding feedback mechanism, so that the traffic driving is safe and smooth, and the development direction of the intelligent road surface is met.
Drawings
FIG. 1 is a schematic diagram of a piezoelectric road surface-based vehicle traffic state self-perception early warning system of the invention;
FIG. 2 is a flow chart of a piezoelectric road based vehicle overload self-sensing early warning method of the present invention;
FIG. 3 is a flow chart of the overspeed self-sensing early warning of a vehicle based on a piezoelectric road surface according to the present invention;
FIG. 4 is a flow chart of the vehicle overrun self-sensing early warning based on the piezoelectric road surface;
FIG. 5 is a self-sensing early warning flow chart of the abnormal driving track of the vehicle based on the piezoelectric road surface;
FIG. 6 is a self-sensing early warning flow chart of road congestion condition based on piezoelectric pavement according to the present invention;
fig. 7 is a flow chart of the vehicle unbalanced load self-sensing early warning based on the piezoelectric road surface.
In the figure: the method comprises the following steps of 1-piezoelectric pavement sensing terminal, 2-vehicle terminal, 3-roadside terminal, 4-image acquisition terminal, 5-data processing terminal and 6-traffic police law enforcement terminal.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention relates to a piezoelectric road surface-based vehicle traffic state self-perception early warning system, which comprises: the system comprises a piezoelectric road surface sensing terminal, a vehicle-mounted terminal, a road side terminal, an image acquisition terminal, a data processing terminal and a traffic police law enforcement terminal.
The piezoelectric road surface sensing end can sense the running state of the vehicle through a piezoelectric sheet embedded in a road surface layer, and can sense the information of the vehicle such as the speed, the weight and the like through the amplification and calculation of a voltage signal. The piezoelectric pavement sensing end is connected with the road side terminal through an electric wire.
The roadside terminals are arranged on two sides of each road section, can collect voltage signals of the piezoelectric road surface sensing end and convert the voltage signals into corresponding vehicle running signals, can communicate with the data processing terminal and the vehicle-mounted terminal, transmit abnormal vehicle behavior signals to the data processing terminal and the vehicle-mounted terminal in real time, and can realize low-delay communication based on 5G signals.
The vehicle-mounted terminal is arranged in the vehicle, so that comprehensive dynamic sensing and communication of traffic information can be realized, and a driver can avoid risks in time according to signals of the vehicle-mounted terminal and drive safely.
The image acquisition end is arranged at an important intersection and used for shooting vehicle violation, and the shot image can be used for judging vehicle overrun. The image acquisition end transmits the image signal to the roadside terminal, and the roadside terminal can judge the actual height and width of the vehicle according to image processing and take the next step of measures.
The invention also provides a vehicle abnormal behavior self-perception early warning method facing the intelligent road, which comprises the following steps:
1. vehicle overload self-sensing early warning
When a vehicle enters the sensing area, the piezoelectric road surface sensing end generates a voltage signal, the voltage signal is transmitted to the road side terminal, and the signal is amplified and converted into the axle weight and the total weight of the vehicle. And the vehicle-mounted terminal transmits the vehicle information to the road side terminal. And the road side terminal compares the actual load capacity of the vehicle with the vehicle-mounted allowable load capacity and the load capacity allowed by the traffic regulations, and if the actual load capacity of the vehicle exceeds the allowable value, the road side terminal transmits the overload signal and the vehicle information to the data processing terminal and simultaneously transmits the overload signal to the vehicle-mounted terminal. And the data processing terminal transmits the vehicle signal to a traffic police law enforcement terminal for enforcement of the nearby road section. The vehicle-mounted terminal can also send an overload signal to remind a driver of the overload of the vehicle. The vehicle is parked near the side, passengers are arranged to transfer or forced to unload, and the vehicle can be driven to go on the road only after the load meets the regulations.
2. Vehicle overspeed self-sensing early warning
When a vehicle enters the sensing area, the piezoelectric road surface sensing end generates a voltage signal and transmits the voltage signal to the road side terminal, and the road side terminal calculates the vehicle speed according to the time difference of the voltages generated by the front piezoelectric sensing piece and the rear piezoelectric sensing piece. Meanwhile, the vehicle-mounted terminal transmits the vehicle information to the road side terminal. And the roadside terminal compares the actual speed of the vehicle with the traffic regulation speed limit value of the road section in the time period, and if the vehicle is overspeed, the roadside terminal transmits the overload signal and the vehicle information to the data processing terminal and transmits the overspeed signal to the vehicle-mounted terminal. And the data processing terminal transmits the vehicle signal to a traffic police law enforcement terminal for enforcement of the nearby road section. The vehicle-mounted terminal can also send an overspeed signal to remind a driver of overspeed of the vehicle. And (4) decelerating the vehicle, driving the vehicle into the next piezoelectric sensing area, and eliminating the alarm signal of the vehicle-mounted terminal if the vehicle does not overspeed.
3. Vehicle overrun self-sensing early warning
When a vehicle enters the sensing area, the image acquisition end acquires a vehicle image and transmits the vehicle image to the roadside terminal, and the roadside terminal calculates the actual height and width of the vehicle through image processing. Meanwhile, the vehicle-mounted terminal transmits the vehicle information to the road side terminal. And if the actual height and width of the vehicle are larger than the height and width specified by the vehicle model, the roadside terminal sends the overrun signal to the data processing terminal and the vehicle-mounted terminal. And the data processing terminal sends the vehicle violation overrun signal to a traffic police law enforcement terminal at a nearby intersection, and the vehicle-mounted terminal sends out overrun warning. The driver stops the vehicle alongside and either forcibly unloads the vehicle or the vehicle is towed away.
If the height and width of the vehicle meet the vehicle model regulation but are smaller than the vehicle height limit or width limit of the front road section, the road side terminal sends an overrun signal to the vehicle-mounted terminal, the vehicle-mounted terminal sends the overrun signal, and meanwhile, the navigation system conducts navigation on a feasible road section to avoid the height-limited and width-limited road sections.
4. Self-sensing and early warning for abnormal running track of vehicle
When a vehicle enters the sensing area, the piezoelectric road surface sensing end generates a voltage signal, and the voltage signals of continuous vehicle driving form a vehicle driving track line. Meanwhile, the vehicle-mounted terminal transmits the vehicle information to the road side terminal. And the road side terminal judges whether the vehicle has abnormal driving, such as retrograde motion, drunk driving, fatigue driving and the like, according to the degree of curve of the driving track line of the vehicle and the traffic driving rule of the road section. If abnormal running exists, the road side terminal transmits the vehicle abnormal running signal and the vehicle information to the data processing terminal, the vehicle-mounted terminal of the concerned vehicle and the vehicle-mounted terminals of the nearby vehicles. And the data processing terminal transmits the abnormal vehicle driving signal to a traffic police law enforcement terminal for enforcing the law of the nearby road section. The vehicle-mounted terminal can also send out abnormal vehicle running signals to remind the driver of abnormal running and remind other drivers around to avoid. And the traffic police intercepts vehicles on site and performs related checking work such as drunk driving, fatigue driving and the like. After the traffic police confirms that the vehicle can be released, the vehicle can continue to drive on the road.
5. Self-perception early warning for road congestion condition
When a vehicle enters the sensing area, the piezoelectric road surface sensing end generates a voltage signal and transmits the voltage signal to the road side terminal, and the road side terminal calculates the vehicle speed according to the time difference of the voltages generated by the front piezoelectric sensing piece and the rear piezoelectric sensing piece. And the road side terminal performs data analysis on the vehicle speed signal passing through the road section and transmits data information to the data processing terminal. And the data processing terminal carries out estimation on the congestion degree of the road section according to the average speed. The data processing terminal transmits the road section congestion condition to the navigation system and the road side terminal. The navigation system will plan a reasonable route according to the customer destination requirements. The road side terminal can transmit the congestion condition of the road section in front to the vehicle-mounted terminal and remind a driver of reasonably selecting a running route.
6. Self-sensing and early warning for vehicle unbalance loading
When a vehicle enters the sensing area, the piezoelectric road surface sensing end generates a voltage signal and transmits the voltage signal to the road side terminal, and the road side terminal judges whether the vehicle is in unbalanced load or not according to the voltage signals on the two sides. And if the unbalance loading is carried out, the roadside terminal transmits the unbalance loading signal and the vehicle information to the data processing terminal and simultaneously transmits the unbalance loading signal to the vehicle-mounted terminal. And the data processing terminal transmits the vehicle signal to a traffic police law enforcement terminal for enforcement of the nearby road section. The vehicle-mounted terminal can also send an unbalance loading signal to remind a driver to stop at the side to eliminate the unbalance loading hidden trouble.
In conclusion, the invention can self-sense the abnormal behaviors of the vehicle through the piezoelectric road surface, transmit the signals to the data processing terminal and the vehicle-mounted terminal, and remind a driver to eliminate the related abnormal behaviors through the traffic police law enforcement terminal and the vehicle-mounted terminal. The system can effectively warn and form a corresponding feedback mechanism, so that the traffic driving is safe and smooth, and the development direction of the intelligent road surface is met.
The invention is further explained below by combining a schematic diagram and an early warning flow chart of a vehicle traffic state self-perception early warning system based on a piezoelectric road surface.
Examples
As shown in fig. 1, a piezoelectric road surface-based vehicle traffic state self-perception early warning system comprises: the system comprises a piezoelectric road surface sensing terminal 1, a vehicle-mounted terminal 2, a roadside terminal 3, an image acquisition terminal 4, a data processing terminal 5 and a traffic police law enforcement terminal 6.
The piezoelectric pavement sensing end 1, the vehicle-mounted terminal 2 and the image acquisition end 4 are all in communication connection with the roadside terminal 3, and the roadside terminal 3 is in communication connection with the traffic police law enforcement terminal 6 through the data processing terminal 5.
According to the figure 2, when a vehicle enters a sensing area, the piezoelectric road surface sensing end 1 generates a voltage signal, the voltage signal is transmitted to the road side terminal 3, and the signal is amplified and converted into the axle weight and the total weight of the vehicle. The in-vehicle terminal 2 transmits the vehicle information to the roadside terminal 3. The roadside terminal 3 compares the actual load capacity of the vehicle with the vehicle-mounted allowable load capacity and the load capacity allowed by the traffic regulations, and if the actual load capacity of the vehicle exceeds the allowable value, the roadside terminal 3 transmits the overload signal and the vehicle information to the data processing terminal 5 and simultaneously transmits the overload signal to the vehicle-mounted terminal 2. The data processing terminal 5 transmits the vehicle signal to a traffic police law enforcement terminal 6 which enforces the law on the nearby road segment. The vehicle-mounted terminal 2 can also send an overload signal to remind a driver of the overload of the vehicle. The vehicle is parked near the side, passengers are arranged to transfer or forced to unload, and the vehicle can be driven to go on the road only after the load meets the regulations.
According to the figure 3, when a vehicle enters the sensing area, the piezoelectric road surface sensing end 1 generates a voltage signal and transmits the voltage signal to the road side terminal 3, and the road side terminal 3 calculates the vehicle speed according to the time difference of the voltages generated by the front piezoelectric sensing piece and the rear piezoelectric sensing piece. Meanwhile, the vehicle-mounted terminal 2 transmits the vehicle information to the roadside terminal 3. The roadside terminal 3 compares the actual speed of the vehicle with the traffic regulation speed limit value of the road section in the time period, if the vehicle is overspeed, the roadside terminal transmits the overload signal and the vehicle information to the data processing terminal 5, and simultaneously transmits the overspeed signal to the vehicle-mounted terminal 2. The data processing terminal 5 transmits the vehicle signal to a traffic police law enforcement terminal 6 which enforces the law on the nearby road segment. The vehicle-mounted terminal 2 can also send an overspeed signal to remind a driver of overspeed of the vehicle. The vehicle decelerates and enters the next piezoelectric sensing area, and if the vehicle does not overspeed, the alarm signal of the vehicle-mounted terminal 2 is eliminated.
According to fig. 4, when a vehicle enters the sensing area, the image acquisition end 4 acquires a vehicle image and transmits the vehicle image to the roadside terminal 3, and the roadside terminal 3 calculates the actual height and width of the vehicle through image processing. Meanwhile, the vehicle-mounted terminal 2 transmits the vehicle information to the roadside terminal 3. If the actual height of the vehicle is larger than the height and width specified by the vehicle model, the roadside terminal 3 sends an overrun signal to the data processing terminal 5 and the vehicle-mounted terminal 2. The data processing terminal 5 sends the vehicle violation overrun signal to the traffic police law enforcement terminal 6 at the nearby intersection, and the vehicle-mounted terminal sends out the overrun warning. The driver stops the vehicle alongside and either forcibly unloads the vehicle or the vehicle is towed away.
If the height and width of the vehicle meet the vehicle model regulation but are smaller than the vehicle height limit or width limit of the front road section, the road side terminal 3 sends an overrun signal to the vehicle-mounted terminal 2, the vehicle-mounted terminal 2 sends the overrun signal, and meanwhile, the navigation system conducts navigation on a feasible road section to avoid the height limit and width limit road section.
According to fig. 5, when a vehicle enters a sensing area, the piezoelectric road surface sensing end 1 generates a voltage signal, and the voltage signals for continuous vehicle running form a vehicle running track line. Meanwhile, the vehicle-mounted terminal 2 transmits the vehicle information to the roadside terminal 3. And the road side terminal 3 judges whether the vehicle has abnormal driving, such as retrograde motion, drunk driving, fatigue driving and the like according to the curve degree of the driving track line of the vehicle and the traffic driving rule of the road section. If there is abnormal driving, the roadside terminal 3 transmits a vehicle abnormal driving signal and vehicle information to the data processing terminal 5, the vehicle-involved in-vehicle terminal 3, and the in-vehicle terminals 3 of nearby vehicles. The data processing terminal 5 transmits the abnormal vehicle running signal to a traffic police law enforcement terminal 6 for enforcing the law of the nearby road section. The vehicle-mounted terminal 2 can also send out a vehicle abnormal driving signal to remind a driver of abnormal driving and other drivers around to pay attention to avoiding. And the traffic police intercepts vehicles on site and performs related checking work such as drunk driving, fatigue driving and the like. After the traffic police confirms that the vehicle can be released, the vehicle can continue to drive on the road.
According to the graph 6, when a vehicle enters the sensing area, the piezoelectric road surface sensing end 1 generates a voltage signal and transmits the voltage signal to the road side terminal 3, and the road side terminal 3 calculates the vehicle speed according to the time difference of the voltages generated by the front piezoelectric sensing piece and the rear piezoelectric sensing piece. The road side terminal 3 carries out data analysis on the vehicle speed signal passing through the road section and transmits data information to the data processing terminal 5. The data processing terminal 5 estimates the degree of congestion of the road section based on the average vehicle speed. The data processing terminal 5 will transmit the congestion situation to the navigation system and the roadside terminal 3. The navigation system will plan a reasonable route according to the customer destination requirements. The road side terminal 3 transmits the congestion condition of the road section in front to the vehicle-mounted terminal 2 and reminds a driver to reasonably select a driving route.
According to fig. 7, when a vehicle enters a sensing area, the piezoelectric road surface sensing end 1 generates a voltage signal, the voltage signal is transmitted to the road side terminal 3, and the road side terminal 3 judges whether the vehicle is in unbalanced load or not according to the magnitude of the voltage signals at two sides. If the vehicle is in the unbalanced load state, the roadside terminal transmits the unbalanced load signal and the vehicle information to the data processing terminal 5, and simultaneously transmits the unbalanced load signal to the vehicle-mounted terminal 2. The data processing terminal 5 transmits the vehicle signal to a traffic police law enforcement terminal 6 which enforces the law on the nearby road segment. The vehicle-mounted terminal 2 can also send an unbalance loading signal to remind a driver to park by the side to eliminate the unbalance loading hidden trouble.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided would be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego such subject matter, nor should the applicant consider that such subject matter is not considered part of the disclosed subject matter.
Claims (10)
1. The utility model provides a vehicle traffic state is from perception early warning system based on piezoelectricity road surface which characterized in that includes: the system comprises a piezoelectric road surface sensing terminal, a vehicle-mounted terminal, a roadside terminal, an image acquisition terminal, a data processing terminal and a traffic police law enforcement terminal;
the piezoelectric road surface sensing end is used for sensing the driving state of the vehicle through a piezoelectric sheet embedded in a road surface layer to obtain a voltage signal; the piezoelectric pavement sensing end is connected with the road side terminal;
the road side terminals are arranged on two sides of each road section and used for collecting voltage signals of the piezoelectric road surface sensing end and converting the voltage signals into vehicle body information and driving information of the vehicle so as to judge whether the vehicle has abnormal behaviors; the abnormal behaviors comprise vehicle overload, vehicle overspeed, vehicle overrun, abnormal vehicle running, road congestion and vehicle unbalance loading; simultaneously, the vehicle abnormal behavior signal is communicated with the data processing terminal and the vehicle-mounted terminal, and the vehicle abnormal behavior signal is transmitted to the data processing terminal and the vehicle-mounted terminal in real time;
the vehicle-mounted terminal is arranged in a vehicle and used for realizing comprehensive dynamic sensing and communication of traffic information;
the image acquisition end is arranged on a road and used for shooting vehicle violation, and the shot image is used for judging vehicle overrun; the image acquisition end transmits the image signal to the road side terminal;
the data processing terminal is used for transmitting the vehicle abnormal behavior signal to a traffic police law enforcement terminal for enforcing the law of a nearby road section;
and the traffic police law enforcement terminal is used for communicating with the road side terminal, the image acquisition terminal and the data processing terminal so as to acquire the traffic state information of the vehicle.
2. The piezoelectric pavement-based vehicle traffic state self-perception early warning system according to claim 1, wherein the roadside terminal is used for vehicle overload self-perception early warning, and specifically comprises:
and amplifying the voltage signal, converting the amplified voltage signal into the axle load and the gross weight of the vehicle, comparing the actual load capacity of the vehicle with the vehicle-mounted allowable load capacity and the load capacity allowed by the rule, and sending an overload signal if the actual load capacity of the vehicle exceeds the allowable value.
3. The piezoelectric pavement-based vehicle traffic state self-perception early warning system according to claim 1, wherein the roadside terminal is used for vehicle overspeed self-perception early warning, and specifically comprises:
and calculating the speed of the vehicle according to the time difference of the voltages generated by the front piezoelectric sensing piece and the rear piezoelectric sensing piece, comparing the actual speed of the vehicle with the intersection speed limit value of the road section in the time period, and sending an overspeed signal if the vehicle is overspeed.
4. The piezoelectric pavement-based vehicle traffic state self-perception early warning system according to claim 1, wherein the roadside terminal is used for vehicle out-of-limit self-perception early warning, and specifically comprises:
acquiring a vehicle image according to an image acquisition end, calculating the actual height and width of the vehicle through image processing, and if the actual height and width of the vehicle is greater than the height and width specified by the vehicle model, sending out an overrun warning;
if the height and width of the vehicle meet the vehicle model regulation but are smaller than the vehicle height limit or width limit of the front road section, the road side terminal sends an overrun signal to the vehicle-mounted terminal, the vehicle-mounted terminal sends the overrun signal, and meanwhile, the navigation system conducts navigation on a feasible road section to avoid the height-limited and width-limited road sections.
5. The piezoelectric pavement-based vehicle traffic state self-perception early warning system according to claim 1, wherein the roadside terminal is used for self-perception early warning of abnormal driving tracks of vehicles, and specifically comprises:
and (3) forming a vehicle running track line by voltage signals generated by the continuous running of the vehicle, judging whether the vehicle runs abnormally or not according to the curve degree of the vehicle running track line and the traffic running rule of the road section, and sending an abnormal running signal if the vehicle runs abnormally.
6. The piezoelectric pavement-based vehicle traffic state self-perception early warning system according to claim 1, wherein the roadside terminal is used for self-perception early warning of road congestion conditions, and specifically comprises:
and calculating the speed of the vehicle according to the time difference of the voltages generated by the front piezoelectric sensing piece and the rear piezoelectric sensing piece, carrying out data analysis on the speed signal of the vehicle passing through the road section, and estimating the congestion degree of the road section according to the average speed of the vehicle to obtain the congestion condition information of the road section.
7. The piezoelectric pavement-based vehicle traffic state self-perception early warning system according to claim 1, wherein the roadside terminal is used for vehicle unbalance loading self-perception early warning, and specifically comprises:
and judging whether the vehicle is in unbalanced load according to the voltage signals at two sides of the road, and if so, sending a vehicle unbalanced load signal.
8. The piezoelectric pavement-based vehicle traffic state self-perception early warning method as claimed in claim 1, characterized by comprising:
1) vehicle overload self-sensing early warning
When a vehicle enters the sensing area, the piezoelectric road surface sensing end generates a voltage signal, the voltage signal is transmitted to the road side terminal, and the signal is converted into the axle weight and the total weight of the vehicle after being amplified; the vehicle-mounted terminal transmits the vehicle information to the road side terminal; the roadside terminal compares the actual load capacity of the vehicle with the vehicle-mounted allowable load capacity and the load capacity allowed by the traffic regulations, and if the actual load capacity of the vehicle exceeds the allowable value, the roadside terminal transmits the overload signal and the vehicle information to the data processing terminal and transmits the overload signal to the vehicle-mounted terminal; the data processing terminal transmits the vehicle signal to a traffic police law enforcement terminal for enforcement on a nearby road section; the vehicle-mounted terminal can also send an overload signal to remind a driver of the overload of the vehicle;
2) vehicle overspeed self-sensing early warning
When a vehicle enters the sensing area, the piezoelectric road surface sensing end generates a voltage signal and transmits the voltage signal to the road side terminal, and the road side terminal calculates the vehicle speed according to the time difference of the voltages generated by the front piezoelectric sensing piece and the rear piezoelectric sensing piece; meanwhile, the vehicle-mounted terminal transmits the vehicle information to the road side terminal; the roadside terminal compares the actual speed of the vehicle with the traffic regulation speed limit value of the road section in the time period, if the vehicle is overspeed, the roadside terminal transmits the overload signal and the vehicle information to the data processing terminal, and simultaneously transmits the overspeed signal to the vehicle-mounted terminal; the data processing terminal transmits the vehicle signal to a traffic police law enforcement terminal for enforcement on a nearby road section; the vehicle-mounted terminal can also send an overspeed signal to remind a driver of overspeed of the vehicle;
3) vehicle overrun self-sensing early warning
When a vehicle enters the sensing area, the image acquisition end acquires a vehicle image and transmits the vehicle image to the roadside terminal, and the roadside terminal calculates the actual height and width of the vehicle through image processing; meanwhile, the vehicle-mounted terminal transmits the vehicle information to the road side terminal; if the actual height and width of the vehicle are larger than the height and width specified by the vehicle model, the roadside terminal sends the overrun signal to the data processing terminal and the vehicle-mounted terminal; the data processing terminal sends the vehicle violation overrun signal to a traffic police law enforcement terminal at a nearby intersection, and the vehicle-mounted terminal sends out overrun warning;
4) self-sensing and early warning for abnormal running track of vehicle
When a vehicle enters the sensing area, the piezoelectric road surface sensing end generates a voltage signal, and the voltage signal for continuous vehicle running forms a vehicle running track line; the roadside terminal judges whether the vehicle runs abnormally according to the degree of curve of the vehicle running track line and the traffic running rule of the road section; if abnormal running exists, the road side terminal transmits the vehicle abnormal running signal and the vehicle information to the data processing terminal, the vehicle-mounted terminal of the vehicle and the vehicle-mounted terminals of nearby vehicles; the data processing terminal transmits the abnormal vehicle driving signal to a traffic police law enforcement terminal for enforcement on a nearby road section; the vehicle-mounted terminal can also send out a vehicle abnormal driving signal to remind a driver of abnormal driving and other drivers around to pay attention to avoiding;
5) self-perception early warning for road congestion condition
When a vehicle enters the sensing area, the piezoelectric road surface sensing end generates a voltage signal and transmits the voltage signal to the road side terminal, and the road side terminal calculates the vehicle speed according to the time difference of the voltages generated by the front piezoelectric sensing piece and the rear piezoelectric sensing piece; carrying out data analysis on the vehicle speed signal passing through the road section, and transmitting data information to a data processing terminal; the data processing terminal carries out pre-estimation on the congestion degree of the road section according to the average speed; the data processing terminal transmits the road section congestion condition to the navigation system and the road side terminal;
6) self-sensing and early warning for vehicle unbalance loading
When a vehicle enters the sensing area, the piezoelectric road surface sensing end generates a voltage signal and transmits the voltage signal to the road side terminal, and the road side terminal judges whether the vehicle is in unbalanced load or not according to the voltage signals on the two sides; if the vehicle is in the unbalanced load state, the roadside terminal transmits the unbalanced load signal and the vehicle information to the data processing terminal and simultaneously transmits the unbalanced load signal to the vehicle-mounted terminal; the data processing terminal transmits the vehicle signal to a traffic police law enforcement terminal for enforcement on a nearby road section; the vehicle-mounted terminal can also send an unbalance loading signal to remind a driver to stop at the side to eliminate the unbalance loading hidden trouble.
9. The warning method as claimed in claim 8, wherein the vehicle is driven into the next piezoelectric sensing area after deceleration, and the overspeed warning signal of the vehicle-mounted terminal is removed if the vehicle does not overspeed.
10. The early warning method according to claim 8, wherein if the height and width of the vehicle meet the vehicle model specification but are smaller than the vehicle height limit or width limit of the road section ahead, the roadside terminal sends an overrun signal to the vehicle-mounted terminal, the vehicle-mounted terminal sends the overrun signal, and the navigation system conducts navigation of the feasible road section to avoid the height-limited and width-limited road sections;
the navigation system can plan a reasonable route according to the requirement of a customer destination, and the road side terminal can transmit the congestion condition of the road section in front to the vehicle-mounted terminal and remind a driver of reasonably selecting a running route.
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| CN202010038147.5A CN111210630A (en) | 2020-01-14 | 2020-01-14 | Piezoelectric pavement-based vehicle traffic state self-perception early warning system and method |
| PCT/CN2020/105376 WO2021143097A1 (en) | 2020-01-14 | 2020-07-29 | Vehicle traffic state self-sensing and early-warning system based on piezoelectric pavement |
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| CN202010038147.5A CN111210630A (en) | 2020-01-14 | 2020-01-14 | Piezoelectric pavement-based vehicle traffic state self-perception early warning system and method |
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