CN1870068A - Running vehicle lane discriminating method based on electromagnetic wave beam covered - Google Patents
Running vehicle lane discriminating method based on electromagnetic wave beam covered Download PDFInfo
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Abstract
A method for determining the traveling lane of vehicle based on beam coverage of electromagnetic wave includes setting a directed emission antenna horizontally on axial lane such as Sa, Sb and Sc for emitting electromagnetic wave with different signal parameter to cover each lane, judging that vehicle is on A lane if vehicle unit receives signal from antenna Sa and on B lane if vehicle receives signal from Sb and so on, judging that vehicle is on juncture of lane A and B if vehicle unit receives signal from antenna Sa and Sb simultaneously and so on and so forth.
Description
Technical field
The present invention relates to a kind of road traffic vehicle safe operation system, especially a kind of running vehicle lane discriminating method that covers based on the electromagnetism wave-wave.
Background technology
Be accompanied by the fast development of highway, traffic management technology backward relatively causes traffic hazard to grow with each passing day, and not only brought huge property loss to society, also become to jeopardize the very important problem of people's life security.For this reason, big quantity research has been carried out at efficient running technology of highway and automobile collision preventing technology in recent years in the home and abroad.Its concrete technology as:
1, ultrasound wave automobile range finding anti-collision technique;
2, laser ranging automobile radar anti-collision technology;
3, tellurometer survey automobile radar anti-collision technology;
4, GPS technology and other sensor location technology etc.;
5, intelligent traffic administration system technology etc.
These technology can play a role undoubtedly, but its effect can't make us very satisfied.
Summary of the invention
The purpose of this invention is to provide a kind of based on electromagnetism wave-wave soverlay technique, to the affirmation method of discrimination in track, operational vehicle place; And utilize this method, can differentiate affirmation for track, operating vehicle place, and take this to dispatch guiding dynamically, in the hope of preventing accident and improving road travel efficient for operational vehicle.
Technical scheme of the present invention is: a kind of running vehicle lane discriminating method that covers based on the electric wave wave beam, in both sides, highway track along the line, whenever oriented emitting antenna of distribution such as Sa, Sb, Sc keep at a certain distance away, the electromagnetic wave of different antenna emissions, with different signal parameters, effectively cover for each track, and this covering can not impact the identification of other track vehicles; If it is behind the vehicle entering signal areal coverage, that mobile unit receives if the signal of Sa antenna emission then is judged to be in the A road and travels; If what mobile unit received is the signal of Sb antenna emission, then is judged to be in the B road and travels; If the signal of the sufficient Sc antenna emission that mobile unit receives then is judged to be in the C road and travels; If mobile unit receives the signal of Sa, the emission of Sb antenna simultaneously, then be judged to be on the AB boundary line and travel; If mobile unit receives the signal of Sb, the emission of Sc antenna simultaneously, then be judged to be on the BC boundary line and travel.
The height of oriented emitting antenna, the installation at inclination angle should meet the covering requirement of adopting each track to cover or adopt the overlapping waveform of lane line separately with the electromagnetic wave with different parameters feature; On this basis, mobile unit is according to different signal characteristics, and then discerns different tracks; And, also should dispose the broadcast channel emitting antenna that can be transmitted to each vehicle mobile equipment essential information that does not wait on the road, the information and information warning and other relevant informations relevant that can this car be supervised and guided for each mobile unit mission control-center with this vehicle; The receiving antenna that can receive each mobile unit information is equipped with simultaneously.
Vehicle-mounted transceiver interior reservoir has each number information of confirming point, and each confirms the range information between the point, and each confirms that point is necessary to provide geographical environment information and other information warnings of reference for the driver; Mobile unit can be according to these information, the calculating of being correlated with and the voice or the light indication information that send prompting or warn; This mobile unit is given the driver by the related personnel and is put into vehicle generally in the porch that enters highway, at expressway exit, is returned by driver's taking-up.
Each mobile unit has a CDMA or GSM engine in order to receive or emission information; Each mobile unit sends to this car of CCC through resulting each parameter of this affirmation point in real time in the mode of short message.
Mobile unit is in the identification track, the concrete time of this lane detection point passed by in record, and and concrete time of receiving " prepare confirm " signal compare calculating, thereby obtain the working time of this car on both distances, and and then calculate two tracks and confirm average velocity between the average velocity in highway section between the point and preparation " affirmation antenna " and cover antenna.
Description of drawings
Fig. 1 is one of them website synoptic diagram of the inventive method
Fig. 2 judges the method synoptic diagram in track during for predetermined limit of the present invention
Fig. 3 is the multilane highway lane recognition method synoptic diagram that covers based on waveform
Fig. 4 be a vehicle by the time road differentiate affirmation process synoptic diagram
Fig. 5 is a vehicle guidance scheduling synoptic diagram of the present invention on one section highway
Fig. 6 is through the vehicle operating figure after utilizing Research on Lane Detection Based on Hough Transform to the operational vehicle dynamic dispatching
Embodiment
Technical scheme of the present invention mainly comprises: the hardware device of 1, confirming to provide material conditions for lane identification; 2, how to carry out algorithm and the relevant application support software that affirmation is distinguished in the track.
The track of saying of summarizing confirms that technical scheme comprises hardware device, supports software two parts that algorithm and system move.
One, hardware components comprises: a. road is equipped with hardware; B. mobile unit; C. control center.
A. road is equipped with hardware:
Finger confirms on the highway of function that in the configuration track according to managerial demand, distance with certain rule, disposes the track and confirms point at regular intervals.Said rule refers to reach the radio electromagnetsm ripple and each track is covered needed antenna amount and relevant utility appliance respectively and how to set up the purpose that these equipment just can reach correct lane discriminating affirmation.Installation is used for the emitting antenna that the track is confirmed, must be oriented antenna; And the height of antenna installation, the position in the roadside, parameters such as the emission inclination angle of antenna must guarantee that when complex situations occurring the operational vehicle in each track can both be neglected the lane identification of carrying out that does not influence.In addition, also should settle to be used for other emitting antennas that relevant information is measured and transmitted, obtain the equipment such as receiving antenna of moving vehicle lane information and relevant information.
B. mobile unit:
Concrete form can be the computing machine (increased lane identification function and other correlation functions) of an a kind of embedded system or a Tape movement communication card (CDMA or GSM card) or a kind of vehicle-mounted mobile real time communication device that meets the demands etc.
Mobile unit generally is to use like this, and it generally leaves the porch of each highway in, when vehicle enters inlet, gives the driver by the related personnel, uses in whole highway section for the driver.When leaving highway, return in passing by the driver.Mobile unit had both had the function of emission information, also had the function of received signal.
Simultaneously, it can also be a small-sized intelligence system.It has CPU central processing unit, dynamic data storage device, static memory, driving circuit, signal indication and the voice output that can be provided for the signal emission/receiving function of confirming in the track and can carry out functions such as information processing, USB interface, etc. related hardware.
The information that it can obtain processing (comprises current operation track, relevant informations such as velocity information in a average running speed between current and previous affirmation point and the process Δ t of current affirmation point) be converted into to driver's caution guidance information or with it and launch, the pathway edge joint is received antenna and is uploaded to control center, carries out the dynamic dispatching of road operational vehicle and the usefulness of analysis decision for control center.
Simultaneously, mobile unit also should be able to receive from control center at indication information of this vehicle and general broadcast message, and these information vias can be handled the voice or the light information that be converted into driver's prompting.
Mobile unit can be in conjunction with the mobile phone engine of CDMA or GSM, design receiving short message circuit,
C. control center: have the function of carrying out two-way information interaction with each mobile unit at any time, dynamically; Have and to carry out decision making package, the function of dynamic dispatching according to the next multidate information of each mobile unit emission.Can finish for whole highway section key point and detect the data acquisition of environment, weather information in road and analytic function and, making a strategic decision or information warning sends to each mobile unit according to analysis result.
Control center also can be in conjunction with the mobile phone engine design, carries out the mass-sending of short message and carries out the reception and the emission function of short message for each vehicle-mounted transfer table separately.
Two, software comprises: a. control center system software, application software, dynamic data library software, communication software etc.; B. the road surface device control data is gathered with communications control software etc.; C. mobile unit software.
A. control center's software:
Comprise system platform software, application systems software, various corresponding application software, dynamic data base, communication software etc.;
Wherein, system platform software is the support system software of control center.As UNIX, WONDOWS XP etc.
The application platform support programs that comprise the normal operation of relevant support application software.Various corresponding application software are meant that the task of control center not only comprises lane identification and confirms, may also comprise some image monitoring, signal lamp control, the application software that toll administration etc. are relevant.Dynamic data base is that back-up system carries out dynamic acquisition to vehicle parameter, and support programs of performance analysis decision-making in addition, also can comprise the software of other functions.
B. road surface device control and communication software etc.;
Communication software here plays an important role, and comprises coordinating various signal transmission, and road surface parameter acquisition etc. are the critical softwares that system can be played a role.
C. mobile unit software: it is a full-order system software, should comprise system software, communication process software, data and signal processing software, information warning drive software etc.
Wherein, system software supports the operation of the normal reliable of total system; Communication software is finished the data-modulated/data demodulates receiving function of mobile unit and antenna communication.Data and signal processing software be responsible for carrying out data operational analysis and
Some critical datas are converted to the function of alarm or information.The information warning drive software is exactly caution data are transferred to control center on one side, drives loudspeaker send different voice messagings or drive the light that different pilot lamp sends different colours on mobile unit Yi Bian be converted into voice/light information.
Two, the hardware installation and design of lane identification and software algorithm summary
1, hardware layout and installation principle
Suppose that certain highway needs every kilometer a lane detection point is set, have three tracks on the direction, each track is wide 3.9 meters.What then we at first will select is oriented emitting antenna, and the horizontal emission angle of the oriented emitting antenna of selection is greater than the Vertical Launch angle, and its antenna tangent plane vertical and transmit direction just is an oval tangent plane like this.Reasonably design the antenna height of antenna, shown in figure one, get final product in projection on the track on both sides and the projection on the middle lane.
To the signal that each the oriented antenna that is used for lane identification on the road is launched, at first controlled and demarcated, with foundation as lane identification with different parameters.These calibrating parameters refer to can be with different frequencies, and the time, geocoding or they derive as separator.Promptly can be with time division multiplexing; Frequency division multiplex; Code division multiplex and their corresponding variation thereof the parameter that serves as a mark.
In the transmitting of pre-emitting antenna, which test point can be carried by the front is, whether unexpected unusual weather conditions information is arranged near this test point, and traffic waits the data message of dynamic change unusually.These information may be to adopt FSK, the modulation of modulation systems such as PSK.
Mobile unit is distinguished the track can adopt following method:
Method a: shown in figure one, the hardware device of road so is equipped with installation.Promptly a pre-emitting antenna Ty differentiated the certain distance of affirmation point by distance and in position installs along road warp-wise roadside before lane discriminating is confirmed point; Be equipped with a secondary oriented antenna at lane discriminating point with each track, guarantee that each track is covered by the radio electromagnetsm ripple with different parameters feature, and, adopt the electromagnetic wave covered structure of two overlapping coverings of electromagnetic wave for two boder districts that the track is adjacent.Confirm that for the differentiation of this scheme principle is as follows:
The vehicle that on any track on the same direction, travels, the capital receives the signal of Ty emission, when receiving this signal, mobile unit at first should recorder to the time point of this signal, also should be able to obtain the Position Number of this antenna simultaneously, this antenna is to the distance of confirming point and near geography information (as the information that has or not needs such as turnings to point out) or location weather information (have or not dense fog such as the place ahead, have or not icing etc.); When vehicle enters current track and confirms point,, just can identify the track at own place according to the lane information of mobile unit in the parameter attribute of confirming the signal that point is received or antenna emission.As being example with three tracks: the signal of supposing the cover antenna emission of A track is Sa, and the signal of B track cover antenna emission is Sb, and the signal of C track cover antenna emission is Sc; By Sa, Sb overlapped signal areal coverage, the separatrix of B, C is neighbouring by Sb, Sc overlapped signal areal coverage, by that analogy near the separatrix of A, B; And the lane recognition method of mobile unit is following be: when only receiving signal of Sa, promptly differentiating is in the A track; When only receiving signal of Sb, promptly differentiating is in the B track; When only receiving signal of Sc, promptly differentiating is in the C track; When receiving two signals of Sa, Sb simultaneously, promptly differentiate on the critical line of A, B; When receiving two signals of Sb, Sc simultaneously, promptly differentiate on the critical line of B, C, by that analogy.
Simultaneously, vehicle is according to the distance L of preparation emitting antenna to the affirmation point, the time T that pre-emitting antenna signal receives
YUThe time T that receives with the lane markings frequency
JIAN, roughly calculate the speed V on this section distance
SIf this section time ratio is shorter, so, this average velocity just approaches instantaneous velocity.V
S＝L/(T
JIAN-T
YU)。In addition, owing to be L at regular intervals between the check point
P-PDistribute, so, can also be according to a time of arrival of this check point and a last check point pass through time ratio than T
P-P=T
JIAN-T
JIAN-1, draw running time T in this highway section
P-P=T
JIAN-T
JIAN-1, and then the average velocity that can draw by this highway section is V
A: V
A=L
P-P/ T
P-PIn view of the above, substantially can judge vehicle current is in acceleration mode or deceleration regime, or state substantially at the uniform velocity.
The parameter that these check points obtain, after passing to control center, control center just can judge according to the distance of car before and after this car and the same track and these speed parameters and has or not the possibility that generation is collided forward and can the car of back knock into the back, and then make the corresponding decision that the driver is supervised and guided.
Embodiment
The scheme of lane identification: (confirming technology) based on the track that the given area of radiowave covers
A: scheme 1: technical scheme of the present invention is as follows:
The principle that the track of one of them website synoptic diagram Fig. 1 of Fig. 1 highway Research on Lane Detection Based on Hough Transform method (covering based on signal) is confirmed is (is example with direction of highway):
Hardware is equipped with: each confirms that point is equipped with three antenna Sa, Sb, the signal of Sc emission is to cover separately track (track A at separately signal, track B, track C) on the basis, also distinguish the adjacent track of covering of part, cause, have the overlapping areal coverage of two signals at two track intersections.
Principle of work is as follows: the vehicle that moves on the highway apart from XX vehicle lane identification point also have L rice apart from the time, receive the signal of pre-emitting antenna Tyu, note the time that receives this signal.Simultaneously, the processing of also other relevant informations from control center of this antenna emission being correlated with.After this car moves on L rice distance, enter track confirmation signal areal coverage, if behind the entering signal areal coverage, what mobile unit received is the signal that the emission of Sa antenna is arranged, and then is judged to be in the A road and travels; If what mobile unit received is the signal that the emission of Sb antenna is arranged, then is judged to be in the B road and travels; If what mobile unit received is the signal that the emission of Sc antenna is arranged, then is judged to be in the C road and travels.If mobile unit receives the signal of Sa, the emission of Sb antenna simultaneously, then be judged to be on the AB boundary line and travel; If mobile unit receives the signal of Sb, the emission of Sc antenna simultaneously, then be judged to be on the BC boundary line and travel.If determine the track of oneself at each vehicle after, will transmit the relevant information that this car needs through control centers such as the track at this website place and time of this point of process (can also further provide some relevant speed parameters) or speed parameters to control center, the information that each vehicle of point transmits can be differentiated according to each by control center, understand the average velocity of the vehicle on each track substantially, the information such as substantial distance between car and the car front and back.And can carry out consulting correlation circumstance after accident prevention or the accident generation to each vehicle in view of the above.
The parameter that also can survey with the method for Fig. 1 is as follows: a: the working time of expending on L according to vehicle, can calculate at the averaging time of L section and the instantaneous velocity roughly of this section, by comparing with the detection time of a last check point, can calculate the average velocity between two check points, during by the electromagnetic wave signal areal coverage, according to the signal that receives is Sa, Sb or Sc, Sa ⊙ Sb, the time of Sb ⊙ Sc and Tyu signal reception time are relatively, both distances relatively can also calculate the average velocity of vehicle between Tyu and track cover antenna.
Certainly the waveform of this method employing is an elliptical shape, this can bring certain error to calculating, and its maximum distance error be the minor axis of ellipse and half of the overlapping covering two intersection point wire length differences of two waveforms, makes that Q is 2 times of ellipse short shaft, when (Q/L)＜＜1, its error can be ignored.If adopt to allow the wave beam on antenna electromagnetic wave directive ground be huge or (length) square just, then will not have the error of calculation.
Method b: compare with method a, just a pre-emitting antenna, change the back emitting antenna into, therefore its some algorithms of being correlated with are also adjusted accordingly.
Judge the method in track during a kind of predetermined limit:
Fig. 2: the method for judging the track during a kind of predetermined limit
The principle of this scheme is: when mobile unit is received Sa, promptly be identified as and oneself be traveling in the A track, simultaneously identifying information and recognition time are kept in the storer; When mobile unit receives Sb, promptly be judged to be oneself in the B road, simultaneously identifying information and recognition time are kept in the storer; In like manner, when mobile unit receives Sc, promptly be judged to be oneself, simultaneously identifying information and recognition time be kept in the storer in the C track; Equally, receive Sa ⊙ Sb simultaneously, can determine at A, on the lines in B road according to antenna; Receive Sb ⊙ Sc simultaneously according to antenna and can determine, on the C lines at B.Emission again after relevant treatment information such as the temporal information of arrival affirmation point and lane identification information can be transmitted to control center immediately or enter next step.
If vehicle moves on, arbitrary vehicle in the track on this direction all can receive back emitting antenna T
HouThe electromagnetic wave signal of sending when mobile unit is received, can carry out overall treatment according to information that obtains at this and the information that obtains previously, and the parameter that obtains being correlated with is transmitted to control center then.
3. the multilane highway lane recognition method that covers based on waveform:
This recognition methods is suitable for to the super highway of the number of track-lines of exercising greater than 3 tracks for folk prescription.If number of track-lines is not more than 3 tracks, can carry out lane identification with the method for front.
The multilane recognition principle:
When this car was discerned by ready signal, the mobile unit on the vehicle began to prepare to receive identification signal, when
During the entering signal cog region, begin to receive signal separately, identifying respectively according to the signal that receives oneself is 1,2,3,4, certain track in 5,6 tracks, and according to information such as time of arrival, the processing of being correlated with, obtain some relevant parameters, will be transmitted to control center's (annotating: as a kind of special circumstances, do not adopt the method for the overlapping covering of waveform in this method) then, principle is the same, seldom gives unnecessary details.
Fig. 3: the multilane waveform covers synoptic diagram
Embodiment one: the lane identification during bicycle is advanced
The reference diagram of present embodiment is Fig. 4.
In this example, vehicle car is through two lane discriminating points, and promptly the 5th differentiates point and the 6th differentiation point.Wherein, each differentiation point respectively is made of a pre-emitting antenna and three cover antenna.Wherein pre-transmission antennas transmit signal, and a pilot signal frequency is arranged is 2Fyu, and carrier frequency is Fyu, and modulation system is assumed to be BPSK, and signal format is transparent to mobile unit.Three cover antenna signal frequency be respectively F1, F1+fd, F1-fd.The signal carrier frequency of the antenna emission of the corresponding function of each test point is identical.Here suppose the numbering of pre-this check point of transmission antennas transmit, this check point has or not the meteorology of burst to change or information such as traffic hazard.Lane discriminating process when so, vehicle is by this section way is as follows:
Fig. 4 be a vehicle by the time road differentiate the affirmation process
At first, mobile unit with pilot carrier frequency 2 frequency divisions after as of the signal demodulation of local carrier frequency to pre-emitting antenna.Vehicle CAR is near the 5th test point the time, and the essential information data during with some these test points are carried out analyzing and processing, if information warning is arranged, is preparing the driver is carried out sound/light prompting.When car arrives the Ltest line, promptly receive the signal of Tyu5 emission, this signal triggering software writes down the concrete time T o of this moment at once, and according to the numbering of the test point that is about to enter of Tyu5 emission, will calculate the particular location at highway.In the areal coverage of Tyu5, mobile unit also may receive the relevant information of this antenna emission; Meanwhile, vehicle advances after 100 meters, enters electromagnetic wave signal lane identification areal coverage, according to the traffic route among the figure four as can be known, vehicle is received F1+fd and two signals of F1, is accepted in the time of these two signals, and then mobile unit is judged own on the lines in B, C track thus.And, when the moment of just receiving two frequency signals simultaneously, software concrete moment of noting at that time that is triggered is assumed to be To+5 second, then after track, this car place is confirmed, according to the data of Ltest5 to distance L=100 of track signal coverage meter, know this car 5 seconds time, 100 meters the distance of having advanced, the average velocity of calculating thus in this segment distance is about VP5=100/5=20 meter per second=72Km/ hour.Suppose vehicle 1000 (Tyu5, the distances between the Tyu6) that move on, the time that receives the signal of Tyu6 is To+33.33 seconds, can calculate then that average velocity is 30 meter per seconds in these 1000 meters, promptly 108 kilometers/hour.
During from Ltest6 to the track signal coverage, its concrete time is To+35.83, then can calculate average velocity at this end and be 40 meter per seconds=144 kilometer/hour.When vehicle arrived the 6th track test point, mobile unit received the electromagnetic wave that carrier frequency is F1, just can judge the B track of the track at own place for the centre at once.And these lane informations, velocity information sends to the receiving antenna in roadside at once, is uploaded to control center by it.
Embodiment five: track classification, scheduling (not considering the classification problem of vehicle here) respectively:
Fig. 5 is a vehicle guidance scheduling synoptic diagram of the present invention on one section highway
Fig. 5 is on one section highway, and synoptic diagram are guided in a plurality of vehicle schedulings between no more than five lane identification affirmation point, and a kind of use uses scheduling guidance method of the present invention and effect as stating.Among this figure, the J vehicle up front, and enough distances are left in the front, track of J car.Concrete condition is as follows: J continues to move ahead with the speed of current (permission) in B road central authorities; During M process I3, system prompt allows to enter C by the B road, and during K process I3, system prompt allows to enter A by the B road, and the O desire enters B from C is forbidden by command prompt at I3, returns C again; N is proposed at I2 and enters B.R continues at C; S desires to enter B at I2, is forbidden by the I2 command prompt.Q is allowed to enter B at I1 by command prompt; W is allowed to enter A at I1 by command prompt.Vehicle operating figure after the scheduling is as follows:
Fig. 6 is through the vehicle operating figure after utilizing Research on Lane Detection Based on Hough Transform to the operational vehicle dynamic dispatching
Top embodiment has only considered car speed, and the spaces of vehicles that requires on the highway is convenient to the effect for this invention of explanation like this.
This shows that in the time of for low visibility, the driver, can move even just can make whole highway at foggy weather efficiently as long as well drive according to the prompting of control center.If certain driver sticks to one's old way of doing things, perhaps hypervelocity is exercised, perhaps travelling not by the highway requirement greater than the minimum speed of a motor vehicle, so, this phenomenon of this car, run into that each track confirms that point or each mobile unit receive or near the time, will find at the Be Controlled center, can be in time in addition severe information warning warn the driver.If certain car suddenly might before hit and when being knocked into the back by the car of back, in case through confirming point, control center just can find, and associated vehicle is given different cautions or driving guidance information.
Claims (5)
1, a kind of running vehicle lane discriminating method that covers based on the electric wave wave beam, it is characterized in that: in both sides, highway track along the line, whenever keep at a certain distance away by an oriented emitting antenna such as Sa, Sb, the Sc of distributing on each track, the electromagnetic wave of antenna emission is on each track, with different signal parameters, effectively cover for each track, and this covering can not impact the identification of other track vehicles; If it is behind the vehicle entering signal areal coverage, that mobile unit receives if the signal of Sa antenna emission then is judged to be in the A road and travels; If what mobile unit received is the signal of Sb antenna emission, then is judged to be in the B road and travels; If what mobile unit received is the signal of Sc antenna emission, then is judged to be in the C road and travels; If mobile unit receives the signal of Sa, the emission of Sb antenna simultaneously, then be judged to be on the AB boundary line and travel; If mobile unit receives the signal of Sb, the emission of Sc antenna simultaneously, then be judged to be on the BC boundary line and travel.
2, the running vehicle lane discriminating method that covers based on the electric wave wave beam according to claim 1, it is characterized in that: the height of oriented emitting antenna, the installation at inclination angle should meet each track covered or adopted the overlapping waveform of lane line separately with the electromagnetic wave with different parameters feature covering requirement; On this basis, mobile unit is according to different signal characteristics, and then discerns different tracks; And, also should dispose the broadcast channel emitting antenna that can be transmitted to each vehicle mobile equipment essential information that does not wait on the road, the information and information warning and other relevant informations relevant that can this car be supervised and guided for each mobile unit mission control-center with this vehicle; The receiving antenna that can receive each mobile unit information is equipped with simultaneously.
3, the running vehicle lane discriminating method that covers based on the electric wave wave beam according to claim 2, it is characterized in that: vehicle-mounted transceiver interior reservoir has each number information of confirming point, each confirms the range information between the point, and each confirms that point is necessary to provide geographical environment information and other information warnings of reference for the driver; Mobile unit can be according to these information, the calculating of being correlated with and the voice or the light indication information that send prompting or warn; This mobile unit is given the driver by the related personnel and is put into vehicle generally in the porch that enters highway, at expressway exit, is returned by driver's taking-up.
4, the running vehicle lane discriminating method that covers based on the electric wave wave beam according to claim 2 is characterized in that: each mobile unit has a CDMA or GSM engine in order to receive or emission information;
Each mobile unit sends to this car of CCC through resulting each parameter of this affirmation point in real time in the mode of short message.
5. the running vehicle lane discriminating method that covers based on the electric wave wave beam according to claim 2, it is characterized in that: mobile unit is in the identification track, the concrete time of this lane detection point passed by in record, and and concrete time of receiving " prepare confirm " signal compare calculating, thereby obtain the working time of this car on both distances, and and then calculate average velocity and the instantaneous velocity of this moment.
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| CN103903431A (en) * | 2012-12-25 | 2014-07-02 | 刘伟南 | A vehicle detection device |
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| CN116129630A (en) * | 2021-11-12 | 2023-05-16 | 中国移动通信有限公司研究院 | Vehicle information determining method, device and computer readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103903431A (en) * | 2012-12-25 | 2014-07-02 | 刘伟南 | A vehicle detection device |
| CN103903431B (en) * | 2012-12-25 | 2018-01-30 | 刘伟南 | A kind of vehicle detection apparatus |
| CN105467392A (en) * | 2015-11-20 | 2016-04-06 | 江苏中利电子信息科技有限公司 | Radar early-warning protection method for road work |
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