CN103236171B

Movatterモバイル変換

Info

Publication number: CN103236171B
Application number: CN201310157278.5A
Authority: CN
Inventors: 李巧妹; 李庆忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-04-28
Filing date: 2013-04-28
Publication date: 2014-05-28
Anticipated expiration: 2033-04-28
Also published as: WO2014176814A1; CN103236171A

Abstract

The invention relates to a traffic early-warning method, an information transmitter, an information receiver and a traffic early-warning system, belonging to the field of traffic safety. The traffic early-warning method, the information transmitter, the information receiver and the traffic early-warning system are automatically or manually or circularly triggered according to time period. Traffic early-warning information is processed and transmitted by technologies, i.e. the information processing, the radio receiving and transmitting, the directive antenna, the broadcast type communication, the relay retransmission, the alarm display and the like. The propagation path can be widened, the propagation mode can be improved, the propagation distance can be prolonged, and the propagation effectiveness and the information initiative can be improved. The sufficient information sharing among main bodies of the road traffic can be realized. The traffic safety early-warning where the abnormal situation does not form the actual danger, the early-warning distance reaches the furthest kilometer level, and the early-warning time reaches the longest minute level can be provided for vehicle drivers; and a traffic sign facility is used for transmitting the traffic sign information to a receiver on a vehicle through radio wave and transmitting to drivers, and preferably, the receiver transmits an active alarm signal corresponding to the received traffic sign information with the appointed type.

Description

Traffic prewarning method, sender, receiver and traffic prewarning system

Technical field

The present invention relates to traffic safety field, in particular to a kind of traffic prewarning method, sender, receiver and traffic prewarning system.

Background technology

Road Transportation is being born extremely important role national economy is in service, also be the important selection mode that people go on a journey, along with increasing of vehicle population, it is day by day crowded, busy that communications and transportation becomes, different kinds of roads traffic hazard frequently occurs thereupon, for the generation avoiding traffic accident to greatest extent, make full use of different kinds of roads traffic related information and carry out effective traffic safety early warning and become the urgent problem of pendulum in face of ours.

In road traffic activity, different kinds of roads traffic related information is most important to driver's safe driving, and concerning driver, these road traffic condition information are exactly the early warning information with traffic safety predictive value.At present, the source of this category information mainly comprises following approach: 1, road signs, mainly transmit guiding, restriction, warning or indication information with word or symbol; 2, the information display board on road, feature is that the font showing is conventionally very large, generally adopts the display modes such as rolling to show, driver often sees the content of discounting breath; 3, motor vehicle breaks down or traffic hazard occurs on road, block traffic and be difficult to mobile, driver open according to the rules hazard warning lamp and after car assigned position warning notice is set, also should open clearance lamps and rear lamp night simultaneously; 4. vehicle drive people judges spacing, weather condition, road traffic situation by naked eyes.In the face of these early warning information, spontaneous, simple traffic safety early warning that driver can make, in order to instruct the driving behavior of oneself, improves the security of driving.

Above-mentioned driver's traffic safety early warning behavior is present in its driving behavior naturally, it is the important step that guarantees safe driving, but this early warning behavior is with significantly, the limitation that cannot overcome: 1, early warning information circulation way is original, need driver to rely on naked eyes directly to observe, thereby early warning information propagation distance is short and inevitably can be subject to visual range, visual angle, barrier, travel speed, illuminance, visibility, driver's state of mind, having a strong impact on of the factors such as high light when dazzling sunlight or meeting, cause its early warning effect always unreliable, and the pre-warning time obtaining is short, early warning distance is near, and cannot make early warning for the traffic outside viewing area, 2, lack the coordination system of systems engineering, cannot obtain optimized early warning effect, early warning information has no initiative, can only wait for passively that driver passes through the perception of human body sensory organ, between the main body of generation early warning information and vehicle drive people, there is no more effective transmit message channel, driver also cannot have an accident from car and abnormal in the situation that initiatively other vehicles outside viewing area send early warning information or in normal driving process, receive other traffic and participate in the early warning information that main bodys are sent outside viewing area, early warning effect is had a greatly reduced quality.These limitations of driver's early warning behavior tend to cause a chain of traffic accident frequently to occur, and cause a tremendous loss of lives and property loss, also cause the blocking-up of road traffic simultaneously.

Summary of the invention

The object of the present invention is to provide a kind of traffic prewarning method, sender, receiver and traffic prewarning system, use information processing, transceiving, directional antenna, broadcast operation, relay forwarding, the technical finesses such as alarm indication are also transmitted traffic prewarning information, widen its route of transmission, improve circulation way, extend propagation distance, improve the validity of propagation and the initiative of information, realize information sharing fully between the each main body of road traffic, for vehicle drive people provided before abnormal conditions form real danger, early warning distance reaches kilometer level farthest, pre-warning time reaches the traffic safety early warning of minute level most, realize simultaneously traffic sign facility use dispensing device (sender or traffic prewarning system) by radiowave to the receiving trap (receiver or traffic prewarning system) on vehicle transmit its road signs information and show or with voice broadcast to driver, and, alternatively, corresponding to the road signs information of the given category of receiving, described receiving trap sends active alarm signal.

A kind of traffic prewarning method is provided in an embodiment of the present invention, has comprised:

A. information sender is determined and the triggering traffic prewarning information corresponding with described traffic related information according to the traffic related information of input, and described traffic prewarning information exchange is crossed automatic triggering, manual triggers or triggered by time loop cycle;

B. described information sender is encoded described traffic prewarning information according to predetermined manner, obtains traffic prewarning baseband signal, uses described traffic prewarning baseband signal to modulate and obtain modulated traffic prewarning signal carrier wave;

C. described information sender is used the communication mode of broadcast type, and the modulated traffic prewarning signal that modulation is obtained carries out the transmitting of orientation or omnidirectional with the form of radiowave by emitting antenna;

D. receiving party receives the modulated traffic prewarning signal sending with the form of radiowave from specific direction;

E. described receiving party carries out demodulation to described modulated traffic prewarning signal and obtains traffic prewarning baseband signal;

F. described receiving party decodes to described traffic prewarning baseband signal according to predetermined manner, obtains described traffic prewarning information;

G. the described traffic prewarning information that described receiving party obtains according to decoding is made corresponding early warning output.

Preferably, after F, described traffic prewarning method also comprises:

H. described receiving party compares described traffic prewarning information with needing the traffic prewarning information set forwarding, if being included in the described traffic prewarning information forwarding that needs, described traffic prewarning information concentrates,,

I. unidirectional successively to carry out the relay forwarding of multilayer number for the described traffic prewarning information of same traffic related information with hierarchy type topological structure between multiple described receiving parties, described traffic prewarning information is setting value by the maximum number of plies of relay forwarding.

Preferably, each described receiving party who is in described hierarchy type topological structure also sends the forwarding number of plies in traffic prewarning information described in relay forwarding;

The described receiving party who is positioned on lower one deck also obtains forwarding the number of plies in the described traffic prewarning information that obtains relay forwarding by radio reception, demodulation, decoding;

Be arranged in all differences of the described forwarding number of plies that the described receiving party on described hierarchy type topological structure different layers sends, be positioned at the described forwarding number of plies that the described receiving party on same layer sends identical, the described forwarding number of plies that described receiving party sends is that the forwarding number of plies that is positioned at the described receiving party's transmission on last layer adds 1, and the forwarding number of plies that is positioned at the described receiving party's transmission on ground floor is 1;

If the forwarding number of plies that described receiving party receives equals described setting value, if or described setting value be 0, described receiving party does not forward described traffic prewarning information.

Preferably, described traffic prewarning information comprise following any: road signs information, traffic control command and guide information, traffic abnormity information, speed information, traffic hazard warning message, vehicle trouble warning information, road surface parking warning information, spacing information warning, meteorological anomaly information, road abnormal information, vehicle abnormality information, transport condition information, special vehicle request give way information, hazardous materials transportation car information warning, calling for help information; And/or,

Preferably, described early warning output comprise following one or more: voice broadcast, word demonstration, pattern displaying, signal lamp indication, color tips, electric signal output, idle contact output, audible alarm, light warning, vibration alarming.

The embodiment of the present invention also provides a kind of sender of the traffic prewarning method that adopts above-mentioned any one,

Comprise: input and triggering assembly, the first processing components, modulation component, emitting module;

Described input and triggering assembly, for the inputting interface of input traffic related information is provided, and determine and the triggering traffic prewarning information corresponding with described traffic related information according to the described traffic related information of input, described traffic prewarning information exchange is crossed automatic triggering, manual triggers or is triggered by time loop cycle;

Described the first processing components, for described traffic prewarning information is encoded according to predetermined manner, obtains traffic prewarning baseband signal;

Described modulation component, for using described traffic prewarning baseband signal to modulate and obtain modulated traffic prewarning signal carrier wave;

Described emitting module, for the modulated traffic prewarning signal that modulation is obtained, uses the communication mode of broadcast type, carries out the transmitting of orientation or omnidirectional by emitting antenna with the form of radiowave.

Preferably, described input with trigger assembly comprise following one or more: button, selector switch, communication interface, motoring condition Acquisition Circuit, described motoring condition Acquisition Circuit comprise following one or more: air bag opening signal input interface, speed of a motor vehicle input interface, hazard warning lamp start signal input interface, engine failure indicator signal input interface.

The embodiment of the present invention also provides a kind of receiver of the traffic prewarning method that adopts above-mentioned any one, comprising: receiving unit, demodulation components, the second processing components and output precision;

Described receiving unit, for receiving the modulated traffic prewarning signal sending with the form of radiowave from specific direction;

Described demodulation components, obtains traffic prewarning baseband signal for described modulated traffic prewarning signal is carried out to demodulation;

Described the second processing components, for described traffic prewarning baseband signal being decoded according to predetermined manner, obtains described traffic prewarning information, and makes corresponding early warning output order according to the described traffic prewarning information obtaining;

Described output precision, for exporting corresponding early warning output according to described early warning output order.

Preferably, described output precision comprise following one or more: voice broadcast assembly, pilot lamp, image-text display, electric signal output precision, idle contact output precision, audible alarm assembly, light alarm assemblies, vibration alarming assembly.

The embodiment of the present invention also provides a kind of traffic prewarning system that adopts the traffic prewarning method described in above-mentioned any one,

Comprise: sender as above, receiver as above;

The function of described sender and described receiver and assembly are fused to organic entity by described traffic prewarning system.

Preferably, described traffic prewarning system, also comprises relay forwarding Control Component;

Described relay forwarding Control Component, the relay forwarding that has the max-forwards number of plies to limit to the described traffic prewarning information of specifying for controlling described traffic prewarning system.

Traffic prewarning method provided by the invention, sender, receiver and traffic prewarning system, can reach following beneficial effect:

Traffic prewarning method of the present invention, sender, receiver and traffic prewarning system, classifying as traffic prewarning information according to concrete traffic conditions abstract traffic related information out, by automatic triggering, manual triggers or the mode triggering by time loop cycle trigger traffic prewarning information, use information processing, transceiving, directional antenna, broadcast operation, relay forwarding, the technical finesses such as alarm indication are also transmitted traffic prewarning information, widen the route of transmission of traffic prewarning information, improve circulation way, extend propagation distance, improve the validity of propagation and the initiative of information, realize information sharing fully between the each main body of road traffic, for vehicle drive people provided before abnormal conditions form real danger, early warning distance reaches kilometer level farthest, pre-warning time reaches the traffic safety early warning of minute level most, and auxiliary driver improves the security of driving, thereby reduces incidence and the absolute quantity of traffic hazard, reduces casualties and property loss, ensures the coast is clear, realize simultaneously traffic sign facility use dispensing device (sender or traffic prewarning system) by radiowave to the receiving trap (receiver or traffic prewarning system) on vehicle transmit its road signs information and show or with voice broadcast to driver, and, alternatively, corresponding to the road signs information of the given category of receiving, described receiving trap sends active alarm signal, the application of these information transfer means, can widen the route of transmission of road signs information, increase the propagation distance of road signs information, improve the communication effect of road signs information, improve the guiding of traffic sign facility to traffic behavior, restriction, warning or indicative function, guarantee driving safety and the coast is clear better.

Accompanying drawing explanation

Fig. 1 shows the structural representation of traffic prewarning system in an embodiment.

Embodiment

Also by reference to the accompanying drawings the present invention is described in further detail below by specific embodiment.

Embodiment 1:

A kind of traffic prewarning method, comprising:

The sender that adopts above-mentioned traffic prewarning method, comprising: input and triggering assembly, the first processing components, modulation component, emitting module;

The receiver that adopts above-mentioned traffic prewarning method, comprising: receiving unit, demodulation components, the second processing components and output precision;

Adopt the traffic prewarning system of above-mentioned traffic prewarning method,

Comprise: sender as above, receiver as above;

It should be noted that:

Described sender, receiver, traffic prewarning system is all can be both independent device, install or be placed in vehicle and means of transportation particularly on traffic sign facility, or independent layout, also can with vehicle control system, vehicle-mounted computer, collision avoidance system, automated driving system, navigator, drive recorder, radar for backing car, warning horn, other mobile units, the means of transportation particularly original function of traffic sign facility etc. merge, manufacture multifunctional equipment, combine together with vehicle or means of transportation, these are all included into invention which is intended to be protected.

Independent that arrange and be provided to described traffic prewarning system, sender or the receiver telotism separately on vehicle or means of transportation, each other equal, without subordinate relation.In the whole distributed pre-alarming system jointly being formed by described traffic prewarning system, sender or receiver separate in target alert region, there is no center control device or regional center control device, also concentrate, unified reception, the facility of processing and releasing news, described traffic prewarning system, sender or receiver be independent, independently operation separately, each other coequally, transmission of information directly.

Due to only from other vehicles, the traffic prewarning information that the traffic such as means of transportation participate in main body just has predictive value concerning the user of described traffic prewarning system, although so function that described traffic prewarning system has transmitted radio signal simultaneously and receives radio signals, but described traffic prewarning system receives only and is provided to other vehicles, described traffic prewarning system on means of transportation or independent layout, the radio signal that sender sends, and do not receive the radio signal of self sending, the method realizing is according to different types of traffic prewarning information, adopt respectively the relative position of reasonable Arrangement emitting antenna and receiving antenna, while selecting suitable transmit-receive position and sender for directional antenna, stopping the aggregate measures such as reception realizes.

Embodiment 2:

A kind of traffic prewarning method, comprises the steps:

Step 101, information sender is determined according to traffic related information and is triggered traffic prewarning information;

Traffic prewarning information comprises the early warning information of corresponding various abstract traffic related informations, such as: road signs information, traffic control command and guide information, traffic abnormity information, speed information, traffic hazard warning message, vehicle trouble warning information, road surface parking warning information, spacing information warning, meteorological anomaly information, road abnormal information, vehicle abnormality information, transport condition information, special vehicle request give way information, hazardous materials transportation car information warning, calling for help information.It should be noted that, traffic prewarning information is not limited to scope listed above, as long as the traffic conditions that maybe may have influence on driving behavior relevant with traffic, and can abstract and rear definite its corresponding traffic prewarning information of classification.Above-mentioned said abnormal all relative normal conditions, people can judge in conjunction with the conventional knowledge of traffic by general knowledge;

Be appreciated that traffic prewarning information does not comprise the detail of traffic conditions, but classification to concrete traffic conditions and general character are extracted.The traffic prewarning information relating in each step next, is all a kind of early warning information of summary-type, and recipient just obtains abstract traffic prewarning information, can not obtain the particular content of the corresponding site traffic situation of traffic prewarning information.

Article one, traffic prewarning information has represented a class traffic related information, such as: road abnormal information can be corresponding: a series of traffic related informations such as congestion in road, road maintenance, road barricade.

Meanwhile, a traffic related information also can correspondence be determined multiple traffic prewarning information, such as: site traffic accident can be determined: the traffic prewarning information such as road abnormal information, traffic hazard warning message.

The triggering mode of traffic prewarning information has manual triggers, automatically triggers or trigger by time loop cycle, for the traffic prewarning information that uses manual triggers and automatically trigger, triggers traffic prewarning information in traffic prewarning input information.

Wherein manual triggers can adopt button, selector switch etc., and by manual input, manually the mode such as select to input traffic prewarning information in various preset traffic prewarning information, described traffic prewarning information is triggered thereupon; Such as: vehicle sails the traffic prewarning information of manual triggers meteorological anomaly information of fog-zone into; Driver and the vehicle manual triggers of being in trouble need to cry for help time is called for help information.

Automatically triggering can adopt according to a certain index whether the mode of the value of satisfying the criteria send out traffic prewarning information from movable contact, the traffic prewarning information that is obtained from travel condition of vehicle is used triggering automatically.Such as: safe automobile air bag is opened and can automatically be triggered traffic hazard warning message.

The mode triggering by the circulation of default time cycle, can be the interval time of specific traffic prewarning information setting circulation triggering, reaches the predetermined circulation trigger interval time to trigger this traffic prewarning information.Such as: be installed on sender on traffic sign facility and reach the predetermined circulation trigger interval time and trigger road signs information.

The described traffic prewarning information of the one species triggering under different condition also can change, such as: according to the difference of the condition such as type and transport condition of road traffic condition, weather condition, vehicle class, vehicle, automatically or by user manually select to send the different described spacing information warnings of guarding against distances;

Step 102, information sender is encoded and is obtained traffic prewarning baseband signal the traffic prewarning information triggering according to predetermined manner;

Wherein, traffic prewarning information coding is adopted to existing coding techniques, traffic prewarning information is encoded, that is: traffic prewarning information is converted to the electric impulse signal of regulation, to pass through electric signal transmission.

The predetermined manner of this coding is selected arbitrarily in existing coding techniques, as long as can guarantee that predetermined manner reaches receiving-transmitting sides and shares information in the time of Code And Decode, can arbitrarily set.

Step 103, information sender is used the encoded traffic prewarning baseband signal obtaining to modulate and obtain modulated traffic prewarning signal carrier wave;

The modulated traffic prewarning signal obtaining by modulated process carries traffic prewarning baseband signal, and then has also just carried traffic prewarning information;

In order to improve anti-multipath propagation effect and the co-channel interference performance of Radio Signal Propagation link in subsequent step, preferably, modulation technique adopts COFDM technology (COFDM), and this technology is prior art.

Step 104, information sender is used the communication mode of broadcast type, and the modulated traffic prewarning signal that modulation is obtained carries out the transmitting of orientation or omnidirectional with the form of radiowave by emitting antenna;

Using the communication mode of broadcast type is in order to realize sufficient information sharing, and the early warning information sending is passed to the full detail take over party in target alert region, thereby improves the trustworthiness of early warning, prevents false dismissal.

This radiowave adopts the radiation pattern of orientation or omnidirectional, directed selected direction be the direction of advancing using vehicle as with reference to, and omnidirectional refers in all directions, radio wave intensity is the same, there is no directivity, it is the Objective in order to improve early warning that different traffic prewarning information adopts respectively orientation or theaomni-directional transmission, reduces and even stops false-alarm and false dismissal.Such as: road signs information sends to direction to the car, and the special vehicle request information that gives way sends to direction of traffic, and the transmission of calling for help information is non-directional.

It is pointed out that information sender is in transmitting when radiowave, by the difference of the kind of its entrained early warning information, the share channel that choice for use is planned in advance respectively or monopolize channel.Such as: traffic hazard warning message is used share channel transmitting, and traffic control command and guide information, road signs information use monopolizes channel transmitting;

Preferably, in order to make associated electronic circuits be easy to process electronic signal, the carrier wave in step 103 is selected lower frequency, then uses difference frequency technology, is the frequency of the channel planned in advance by the carrier frequency shift of modulated traffic prewarning signal;

Difference frequency technology adopts prior art to implement;

The transmitting of radiowave adopts existing technology to implement.

Step 105, receiving party receives the described modulated traffic prewarning signal sending with the form of radiowave from specific direction;

Specific direction be the direction of advancing using vehicle as with reference to, the direction of advancing using vehicle is different as the traffic conditions existing on the different directions of reference or occur to the threaten degree that safety traffic was formed of vehicle, corresponding to the object of traffic safety early warning, pay close attention to targetedly the traffic prewarning information that specific direction sends and can make the early warning that has more availability, such as, receive the traffic hazard warning message that send in front, receive the rear special vehicle request of the sending information that gives way, receive calling for help information that all directions send etc., all specific aim and the trustworthiness in order to improve early warning, reduce false-alarm and false dismissal situation.

Preferably, in order to make associated electronic circuits be easy to process electronic signal, using difference frequency technology is lower frequency by the carrier frequency shift of the modulated traffic prewarning signal receiving;

The reception of radiowave adopts existing technology to implement.

Step 106, receiving party carries out demodulation to modulated traffic prewarning signal and obtains traffic prewarning baseband signal;

Demodulation adopts existing techniques in realizing, and by demodulation, the entrained traffic prewarning baseband signal of modulated traffic prewarning signal is reappeared.

Step 107, receiving party decodes and obtains traffic prewarning information traffic prewarning baseband signal according to predetermined manner;

Decoding is the inverse process of coding, use existing techniques in realizing, the predetermined manner of decoding is the mode corresponding with the predetermined manner of coding in step 102, by decoding, be that specific electric impulse signal converts corresponding traffic prewarning information to by traffic prewarning baseband signal, thereby the transmission that realizes traffic prewarning information between information sender and receiving party is with shared.

Step 108, the traffic prewarning information that receiving party obtains according to decoding is made corresponding early warning output;

Early warning output comprises various demonstrations or warning, such as: voice broadcast, word demonstration, pattern displaying, signal lamp indication, color indication, electric signal output, idle contact output, audible alarm, light warning, vibration alarming etc. are that driver uses described traffic prewarning method to obtain the direct link of early warning information.

Above-mentioned early warning output is divided into the early warning output that driver is sent and the early warning output that mobile unit is sent.The early warning output that driver is sent comprises: actively early warning, such as: light is reported to the police, acoustic alarm, effect is to send alarm signal, it is a kind of initiatively prompting behavior, can cause in the mode of giving prominence to user's concern, and accept concrete information, their startup, corresponding to the arrival of information, is removed corresponding to user's instruction or the arrival of Preset Time; Passive early warning, such as: signal lamp indication, picture and text show do not have initiative, need user independently to observe ability obtaining information, and coming into force corresponding to the existence of information of these early warning, removes the disappearance corresponding to information.The early warning that mobile unit is sent comprises electric signal output, idle contact output etc., and effect is to coordinate, link with the mobile unit with other functions, triggers it and enters duty, to realize the systematization control to traffic safety.

Because traffic prewarning information is corresponding to various traffic conditions, the threaten degree that the different traffic conditions that exist on road or occur form the safety traffic of vehicle is different, therefore different traffic prewarning information is also distinguishing to the significance level of traffic safety, for this reason, corresponding to the object of traffic safety early warning, different characteristics and effect with various early warning outputs, for the different types of traffic prewarning information receiving, receiving party can select to make to driver the combination of wherein a kind of early warning output or multiple early warning output, to improve validity and the dirigibility of early warning, obtain optimized early warning effect.

Embodiment 3:

Step 101-107 incontinuity embodiment 2, in order more to give full play to part, traffic safety there is the forewarning function of the traffic prewarning information of direct important meaning, amplify early warning effect, receiving party bears the obligation of carrying out relay forwarding after this type of traffic prewarning information receiving, between multiple described receiving parties, successively described traffic prewarning information is carried out to the forwarding of multilayer number so that hierarchy type topological structure is unidirectional, along with successively carrying out of relay forwarding, this type of traffic prewarning information is further propagated into farther place, thereby make the receiving party who receives forwarding information increase early warning distance, and then the longer pre-warning time of acquisition, the safety benefit that traffic safety early warning brings is more remarkable.

But, if traffic prewarning information is forwarded to unlimited distance, the predictive value of this information will be reduced to zero, and whole pre-alarming system is had a negative impact, cause a large amount of false-alarms, reduce the trustworthiness of early warning, therefore, for the advantage that prevents relay forwarding is abused, the traffic prewarning information for same traffic related information is limited by the maximum number of plies of relay forwarding, thereby restricting traffic early warning information is by the furthest distance of disease spread of relay forwarding.

In this embodiment, suppose that 3 receiving parties participate in forwarding, be respectively receiving party A, receiving party B, receiving party C, and the default max-forwards number of plies be 2(setting value), traffic prewarning information allows to be forwarded at most 2 layers.

Step 201, receiving party A receives modulated traffic prewarning signal, its demodulation, decoding are only obtained to traffic prewarning information, do not obtain forwarding the number of plies, so can determine that this information that the information sender of this early warning information sends is the information of himself determining and triggering, rather than the information forwarding, that is: this traffic prewarning information was not forwarded;

Step 202, receiving party A compares the traffic prewarning information obtaining with needing the traffic prewarning information set forwarding;

Need the traffic prewarning information forwarding to concentrate if this traffic prewarning information is included in, carry out step 203.

Step 203, receiving party A forwards for the first time to traffic prewarning information;

Concrete operations are: receiving party A determines that oneself is for forwarding for the first time, then determines that the forwarding number of plies that oneself will send is 1;

Receiving party A encodes traffic prewarning information and the forwarding number of plies (1) according to predetermined manner, modulation, and obtaining oneself needs the modulated traffic prewarning signal sending;

Receiving party A uses the communication mode of broadcast type, modulated traffic prewarning signal is carried out to the transmitting of orientation or omnidirectional with the form of radiowave by emitting antenna.

Step 204, receiving party B receives the modulated traffic prewarning signal being sent by receiving party A, and its demodulation, decoding are obtained traffic prewarning information and forward the number of plies (1);

Step 205, receiving party B compares the traffic prewarning information obtaining with needing the traffic prewarning information set forwarding,

This traffic prewarning information is included in needs the traffic prewarning information forwarding to concentrate;

Meanwhile, the forwarding number of plies (1) receiving is less than the default max-forwards number of plies (2), so, carry out step 206.

Step 206, receiving party B forwards for the second time to traffic prewarning information;

Concrete operations are: receiving party B determines that according to the forwarding number of plies (1) receiving the forwarding number of plies that oneself will send is 2;

Receiving party B encodes traffic prewarning information and the forwarding number of plies (2) according to predetermined manner, modulation, and obtaining oneself needs the modulated traffic prewarning signal sending;

Receiving party B uses the communication mode of broadcast type, modulated traffic prewarning signal is carried out to the transmitting of orientation or omnidirectional with the form of radiowave by emitting antenna.

Step 207, receiving party C receives the modulated traffic prewarning signal being sent by receiving party B, and its demodulation, decoding are obtained traffic prewarning information and forward the number of plies (2);

Step 208, receiving party C compares the traffic prewarning information obtaining with needing the traffic prewarning information set forwarding,

But the forwarding number of plies (2) receiving equals the default max-forwards number of plies (2), receiving party C does not forward this traffic prewarning information.

So far completed the relay forwarding of the default max-forwards number of plies to the traffic prewarning information for same traffic related information.

By that analogy, can realize the relay forwarding of the situation that the default max-forwards number of plies is other numerical value.In this manner, traffic prewarning information for same traffic related information is that the max-forwards number of plies that can be preset limits by the max-forwards number of plies of relay forwarding, thereby the furthest distance of disease spread after relay forwarding is controlled for the traffic prewarning information of same traffic related information, there will not be the situation to unlimited distance by a traffic prewarning Information Communication for same traffic related information, thereby guaranteed the trustworthiness of traffic prewarning output.

For the forwarding of performing step 201-208, described traffic prewarning system also comprises relay forwarding Control Component, relay forwarding Control Component described in this, compare with needing the traffic prewarning information set forwarding for the described traffic prewarning information that described traffic prewarning system is received, if described traffic prewarning information is included in the described traffic prewarning information forwarding that needs and concentrates, and max-forwards number of plies setting value is greater than 0, , further, if do not comprise in the described modulated traffic prewarning signal that described traffic prewarning system receives to forward the number of plies or forward the number of plies and be less than described setting value, , described in the control of described relay forwarding Control Component, described in traffic prewarning system forwards, traffic prewarning information also sends simultaneously and forwards the number of plies, the described forwarding number of plies sending is that the forwarding number of plies receiving adds 1, if do not comprise the forwarding number of plies in the described modulated traffic prewarning signal that described traffic prewarning system receives, the forwarding number of plies sending is 1.

It should be noted that, it is that last layer forwards the number of plies and adds 1 mode and be one lower one deck forwards on the number of plies can forward according to setting means number of plies basis at last layer to be determined for example that lower one deck forwards the number of plies, and this all belongs to protection scope of the present invention.

Embodiment 4: the sender take traffic mark board as example

A kind of sender, as traffic mark board, have ordinary road traffic mark board for the panel of show label pattern, word and the pattern of traffic sign, word, be integrated with a sender described in embodiment 1 and solar power supply apparatus simultaneously at the back side of pattern, word, the directional transmitting antenna of sender is installed in the side of sign board, the direction that the direction directional bea con board panel of antenna has the one side of pattern and word to face, this traffic mark board can send road signs information to vehicle by radiowave;

Traffic administration personnel select the work at present information of the road signs information consistent with this traffic sign pattern, word content as this sender in the road signs information that is preset in sender inside by button, the circulation sender time interval is set simultaneously, this interval is preferably 10 seconds, and after switching on power, receiver is take 10 seconds as the namely concrete road signs information of this traffic sign of its work at present information of interval directive sending;

The vehicle that is equipped with receiver described in embodiment 1 or traffic prewarning system is in the coverage of sailing the modulated traffic prewarning signal that this traffic sign sends into time, receive the road signs information that it sends, and this road signs information is shown by image-text display, yellow indicator lamp is glittering simultaneously, to cause that driver notes the road signs information of its demonstration.If what receiver or traffic prewarning system were received is the road signs information that traffic safety is had to direct important meaning, also send prompt tone by hummer, alternatively, receiver or traffic prewarning system can also be by the road signs information receiving with voice broadcast to driver;

Solar power supply apparatus adopts existing techniques in realizing;

This traffic mark board sends to described traffic prewarning system or receiver vehicle on the communication mode of broadcast type by its road signs information by radiowave, realize traffic sign facility by radiowave to the receiving trap on vehicle transmit its road signs information and show or with voice broadcast to driver, and, corresponding to the road signs information of the given category of receiving, receiving trap sends active alarm signal;

This traffic mark board can be widened the communication effect of the route of transmission of road signs information, the propagation distance that increases road signs information, raising road signs information, improve guiding, restriction, warning or the indicative function of traffic sign facility to traffic behavior, guarantee driving safety and the coast is clear better.

Next, the present invention by by a structure more specifically device describe the traffic prewarning system described in this embodiment 1 in detail:

Embodiment 5:

A kind of traffic prewarning system, is divided into as lower module (as shown in Fig. 1) power module,load module 2, information processing,control module 3, modulation /demodulation module 4, radio ttransmitter and receiver module (radio-frequency module) 5,output module 6 in function.In this system, the first processing components, the second processing components, relay forwarding Control Component synthesize information processing,control module 3, modulation component and demodulation components synthesize modulation /demodulation module 4, emitting module and receiving unit synthesize radio ttransmitter and receiver module (radio-frequency module) 5, input isload module 2 with triggering assembly, and output precision isoutput module 6.

Circuit formation and the specific works mode of each functional module are as follows:

Described power module offers the required working power of described traffic prewarning system, is made up of 12V direct supply input interface, 12V/5V voltage conversion circuit, chargeable lithium cell, lithium cell charging control circuit.The independent loop of power module from automobile fuse box picks out 12V direct supply, move the charge power supply of required power supply and described chargeable lithium cell for described traffic prewarning system, have an accident and cause described traffic prewarning system to lose under the abnormal conditions of 12V direct supply etc. at vehicle, be its power supply by described chargeable lithium cell, to guarantee that accident information externally sends reliably.

Describedload module 2 is by keyboard, car status information acquisition interface the electric circuit constitute.Keyboard comprise accident sender, vehicle trouble sender, meteorological anomaly sender, the abnormal sender of road, the abnormal sender of transport condition, special vehicle request give way sender, hazardous materials transportation car sender, call for help the senders such as sender and start button and stop the button such as sender, audible and visual alarm signal relief, manually intervene the work of described traffic prewarning system for end user.Described car status information acquisition interface circuit comprises speed of a motor vehicle input interface, air bag opening signal input interface, hazard warning lamp start signal input interface, engine failure indicator signal input interface, and all input interface circuits all use optical coupling isolation circuit to prevent scurrying into of external interference signals.The function of describedload module 2 be control described traffic prewarning system sender, stop news, alarm signal noise reduction etc.

Described information processing,control module 3 are made up of microprocessor, storer and auxiliary circuit, the information that the describedload module 2 of responsible processing is inputted is also outputed to described modulation /demodulation module 4, also process the next information of described modulation /demodulation module 4 transmission simultaneously and be transferred to describedoutput module 6, if the information of receiving is the warning category information directly related with traffic safety, described information processing,control module 3 will be controlled immediately described system automatic relay and forward this warning category information, to increase the warning distance of this warning category information.Described information processing,control module 3 are also responsible for the operation control of described traffic prewarning system.

Described modulation /demodulation module 4 is made up of modulation, demodulator circuit and medium-frequency generator circuit etc., the responsible data that describedsignal processing module 3 is transmitted to intermediate-freuqncy signal (preferably, the frequency of described intermediate-freuqncy signal is selected 30MHz) modulate and be transferred to described radio ttransmitter and receiver module (radio-frequency module) 5, simultaneously also described in demodulation radio ttransmitter and receiver module (radio-frequency module) 5 receive the intermediate-freuqncy signal that generates after radiofrequency signal and by demodulation data transmission out to described signal processing module 3.Modulation, the demodulation mode of signal adopt coded orthogonal division modulation (COFDM), to improve anti-multipath propagation effect and co-channel interference performance.

Described radio ttransmitter and receiver module (radio-frequency module) 5 comprises RF transmit-receive circuit, antenna, the responsible modulated intermediate-freuqncy signal that described modulation /demodulation module 4 is transmitted and radio-frequency (RF) local oscillator signal are (preferably, select superhigh frequency band) gone out by described antenna transmission after difference frequency, simultaneously also by described antenna reception to radiofrequency signal difference frequency be intermediate-freuqncy signal and be transferred to described modulation /demodulation module 4.Described antenna has directivity, is made up of forward facing antenna and rearward-facing antenna, and rearward-facing antenna is emitting antenna, sends information for described traffic prewarning system to the rear of vehicle, and forward facing antenna is receiving antenna, the information of sending for receiving front vehicles.

Describedoutput module 6 is by output interface, liquid crystal display, pilot lamp, audio drive circuitry and loudspeaker composition, be responsible for showing or with traffic prewarning system reception described in voice broadcast and through each modular circuit information after treatment, show the duty of described traffic prewarning system, send audible and visual alarm signal and start optional interlocking equipment (as thermal camera by described output interface corresponding to the warning category information receiving, forward direction radar, collision avoidance system, automated driving system etc.), realize traffic safety early warning system and vehicle safety control, cooperation between emergency action system, and then reach the optimization that causes traffic safety intervention effect.Described output interface circuit uses optical coupling isolation circuit to prevent scurrying into of external interference signals.

The mode that described traffic prewarning system starts sender comprise according to default vehicle condition condition automatically start sender, by user manually boot sender, by default time cycle loop start sender.Between separate described traffic prewarning system individuality, pass through radiowave, with the communication mode transmission of information of broadcast type; To the modulation system of carrier wave, preferably, use coded orthogonal division modulation (COFDM), to improve anti-multipath propagation effect and co-channel interference performance; By the difference of the early warning information classification that sends, select respectively the share channel by planning in advance or monopolize channel sender.

The information that described traffic prewarning system receives after internal logic judgement is processed, shown by pilot lamp or display screen or with voice broadcast to end user, receive the information of particular types (preferably, receive the warning category information directly related with traffic safety) time, described traffic prewarning system is sent audible and visual alarm and automatic relay forwards this warning category information to end user immediately, to increase its warning distance, the distributed pre-alarming system of the described traffic prewarning system composition in target alert region is in the time of the concrete described information of one of relay forwarding, its max-forwards number of plies be subject to artificial predefined numerical value restriction (object be restriction early warning information to a distant place transmit maximum distance, in order to avoid cause false-alarm).

In the ken possessing those of ordinary skills, the present embodiment can also make a variety of changes under the prerequisite that does not depart from aim of the present invention, for example: described traffic prewarning system both can manufacture information receiving function, message sending function in the device of one, also can manufacture the device of message sending function, the split of information receiving function, i.e. sender, receiver; Described traffic prewarning system can manufacture independent device, install or be placed on vehicle and means of transportation, or independent layout, also can with vehicle control system, vehicle-mounted computer, collision avoidance system, automated driving system, navigator, drive recorder, radar for backing car, warning horn, other mobile units, means of transportation particularly the original function of traffic sign facility etc. merge, manufacture multifunctional equipment; The modulation system of carrier signal also can adopt other applicable modulation systems; Carry wave frequency and can select the proper frequency of appropriate authority approval.

Obviously, those of ordinary skill in the art should be understood that, the described each module of the present invention of above-mentioned several embodiment or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that multiple calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in memory storage and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or the multiple modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the person of ordinary skill of the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims

1. a traffic prewarning method, is characterized in that, comprising:

G. the described traffic prewarning information that described receiving party obtains according to decoding is made corresponding early warning output;

After F, described traffic prewarning method also comprises:

2. traffic prewarning method according to claim 1, is characterized in that,

Each described receiving party who is in the topological structure of hierarchy type described in claim 1 also sends the forwarding number of plies in traffic prewarning information described in relay forwarding;

3. according to the traffic prewarning method described in claim 1-2 any one, it is characterized in that,

Described traffic prewarning information comprise following any: road signs information, traffic control command and guide information, traffic abnormity information, speed information, traffic hazard warning message, vehicle trouble warning information, road surface parking warning information, spacing information warning, meteorological anomaly information, road abnormal information, vehicle abnormality information, transport condition information, special vehicle request give way information, hazardous materials transportation car information warning, calling for help information;

And/or,

Described early warning output comprise following one or more: voice broadcast, word demonstration, pattern displaying, signal lamp indication, color tips, electric signal output, idle contact output, audible alarm, light warning, vibration alarming.

4. a sender that adopts the traffic prewarning method of claim 1-3 any one, is characterized in that,

5. sender according to claim 4, is characterized in that,

Described input with trigger assembly comprise following one or more: button, selector switch, communication interface, motoring condition Acquisition Circuit, described motoring condition Acquisition Circuit comprise following one or more: air bag opening signal input interface, speed of a motor vehicle input interface, hazard warning lamp start signal input interface, engine failure indicator signal input interface.

6. a receiver that adopts the traffic prewarning method of claim 1-3 any one, is characterized in that,

Comprise: receiving unit, demodulation components, the second processing components and output precision;

7. receiver according to claim 6, is characterized in that,

Described output precision comprise following one or more: voice broadcast assembly, pilot lamp, image-text display, electric signal output precision, idle contact output precision, audible alarm assembly, light alarm assemblies, vibration alarming assembly.

8. a traffic prewarning system that adopts the traffic prewarning method described in claim 1-3 any one, is characterized in that,

Comprise: the sender as described in claim 4 or 5, the receiver as described in claim 6 or 7;

9. traffic prewarning system according to claim 8, is characterized in that,

Also comprise relay forwarding Control Component;

10. traffic prewarning system according to claim 8 or claim 9, is characterized in that,

The described traffic prewarning information that described relay forwarding Control Component receives described traffic prewarning system is compared with needing the traffic prewarning information set forwarding, if described traffic prewarning information is included in the described traffic prewarning information forwarding that needs and concentrates, and max-forwards number of plies setting value is greater than 0, , further, if do not comprise in the described modulated traffic prewarning signal that described traffic prewarning system receives to forward the number of plies or forward the number of plies and be less than described setting value, , described in the control of described relay forwarding Control Component, described in traffic prewarning system forwards, traffic prewarning information also sends simultaneously and forwards the number of plies, the described forwarding number of plies sending is that the forwarding number of plies receiving adds 1, if do not comprise the forwarding number of plies in the described modulated traffic prewarning signal that described traffic prewarning system receives, the forwarding number of plies sending is 1.