CN103390346B - A kind of ambiguity path identifying system with transport information statistical function - Google Patents
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Abstract
The invention discloses a kind of ambiguity path identifying system with transport information statistical function, it comprises trackside antenna equipment (RSU), board units (OBU), read write line (ODU) and control data corporation (DMC).The present invention has following advantage: 1. transport information statistical system and ambiguity path identifying system are fused to a system, make it compatible.2. can the traffic flow information of certain certain time of section of accurate count.3. can add up the travel speed of certain vehicle more exactly, when through somewhere.4. accurately can identify the driving path of vehicle.
Description
Technical field
The present invention relates to field of radio frequency identification, particularly a kind of transport information statistics and path identifying system being applicable to Networking Expressway.
Background technology
At present, transport information statistical technique is the important topic in current intelligent traffic ITS field, is to realize vehicle to travel and the intelligentized important means of road management, is also the foundation in good time providing real-time road condition information to the public.Transport information statistical technique is because of it can provide the transport information in certain section moment, vehicle speed information, when certain vehicle passes through certain section information, vehicle is travelled and road management intelligent, information-based, have great importance providing in traffic efficiency, road improvement traffic environment and saving transportation and energy.
The method that current traffic information statistics mainly adds ground induction coil based on camera comes transport solution Information Statistics faintly and section passage situation analysis, its limitation is the travel situations effectively can not differentiating each automobile concrete, the transport information in certain section moment is accurate not, certain section can only be analyzed roughly from image whether to block up, and need artificial real-time monitoring images information, be unfavorable for realizing intelligent traffic administration system, be also easily subject to the impact of the adverse weather such as light and misty rain simultaneously.
Along with the development of China's highway, form in large scale, baroque freeway traffic net.The comparatively perfect province of expressway construction eliminates mainline toll station in highway inside the province, substantially achieves the networking of expressway tol lcollection the whole province.Vehicle enters highway inside the province, without the need to passing in and out again and again, paying dues when the highway of different owner travels, only need carry out disposable paying dues when sailing into and roll away from.
But for the freeway net of networked fee collection, often have many driving paths between 2, this situation causes a difficult problem in expressway tol lcollection operation, i.e. " path ambiguity problem ".Under networked fee collection environment, under the road network environment of the especially diversification of investment subjects, solve route or travel by vehicle " polysemy " problem to specification pass through fee distribution mode, improve and split transparency and fairness, realize more reasonably distribution of interests between owner, improve owner enthusiasm, there is earth shaking meaning.
Retrieval finds, Chinese Patent Application No. is 200610036354.7, solve ambiguity path identification problem well, but in the invention, do not mention the realization of transport information statistical function, and on Vehicles Collected from Market, ambiguity path identifying system is mutually incompatible with transport information statistical system, the total solution do not united two into one.
Retrieval also finds, although Chinese Patent Application No. is 201110038229.0 communication meanss disclosing board units and trackside antenna equipment in a kind of ambiguous path recognition system, the method may be used on transport information statistics field, but the method has added 4 OBU sequence numbers in routing information broadcast packet, data packet length is made to add 16 bytes, extend single packet broadcast time of routing information, reduce the number of broadcast times of routing information in 1 second, the method needs at least one the OBU sequence number information in real-time update routing information bag simultaneously, and renewal rewards theory will inevitably take the running time of RSU, the time of RSU actual broadcast routing information is reduced to some extent, and ambiguity path identifying system requires very high mark success ratio, when the time of the actual broadcast routing information of RSU reduces relatively, the reduction of mark success ratio must be brought, this is that highway owner institute is unacceptable, even if because broadcast route information incessantly, the mark success ratio of 100% can not be ensured.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, based on the limitation of existing transport information statistics equipment, a kind of accurate transport information statistical system is newly provided---there is the ambiguity path identifying system of transport information statistical function, both can the problem of transport solution Information Statistics, also can solve ambiguity path identification problem simultaneously, make both compatible, two large functions are fused in a system, ensure the road sign mark rate not affecting ambiguity path identifying system simultaneously.
For meeting above-mentioned target, the present invention proposes a kind of ambiguity path identifying system with transport information statistical function, comprises trackside antenna equipment, read write line, board units and control data corporation, wherein:
Trackside antenna equipment is used for continuing the radiofrequency signal of transmitting about routing information and the signal containing sequence number information of continuous reception board units transmitting, and sequence number information affix timestamp information is sent to described control data corporation together, wherein timestamp information is time when receiving this sequence number, and different board units has different sequence numbers;
Read write line is used for the IC-card write access information to board units, and remove the old routing information of board units, putting board units is periodic wakeup state;
Board units is used at the routing information first receiving the transmitting of this trackside antenna equipment through trackside antenna equipment, then is switched to another frequency range to this trackside antenna equipment transmitting sequence information;
Control data corporation is provided with Database Systems, by the analysis to sequence number information and timestamp information, obtains transport information.
Above-mentioned trackside antenna equipment comprises microprocessor, ups power module, encrypting module, power amplifier module, radio-frequency module, antenna element and remote monitoring module, wherein said microprocessor is connected with described radio-frequency module, described encrypting module, described remote monitoring module, and described power amplifier module is connected with described radio-frequency module.
The duty of above-mentioned remote monitoring module monitoring trackside antenna equipment, sends to control data corporation the sequence number received and timestamp information simultaneously.
Above-mentioned board units comprises microprocessor, button cell module, IC-card module, memory module, radio-frequency module and wake-up circuit, wherein microprocessor is connected with memory module, radio-frequency module, wake-up circuit, described radio-frequency module, by Microprocessor S3C44B0X, can be operated in 433MHz, 460MHz, 900MHz or 2.4GHz.
Above-mentioned read write line comprises microprocessor, radio-frequency module, power module, Upper machine communication module, IC-card module for reading and writing and IC-card antenna, wherein microprocessor is connected with radio-frequency module, Upper machine communication module, IC-card module for reading and writing, and IC-card antenna is connected with IC-card module for reading and writing.
Above-mentioned control data corporation comprises Database Systems, vehicle flow statistical module and remote monitoring module, and wherein Database Systems are connected with vehicle flow statistical module, remote monitoring module.
Native system workflow comprises the steps:
A) at track entrance, read write line is to the IC-card write access information of board units, and remove old routing information, putting described board units is periodic wakeup state, and wherein said board units is operated in the first working frequency range, for transmission path information;
B) when board units is through trackside antenna equipment, first board units receives new route information and preserves, and sends the sequence number information containing sequence number afterwards, after being sent, re-use the first working frequency range at the second working frequency range to trackside antenna equipment;
C) trackside antenna equipment launches new route information on one side incessantly for board units reception, receive the sequence number information from board units on one side incessantly and affix timestamp, transmitting and receiving are carried out simultaneously, and the transmitting and receiving of board units use different working frequency range respectively;
D) the parameter work that provides according to control data corporation of trackside antenna equipment, in real time or periodically sequence number and timestamp can be sent to control data corporation, this control data corporation can calculate the transport information in this trackside antenna equipment place's some time by the difference of analytical sequence number and timestamp;
E) in track outlet, by the access information in read write line reading board units IC-card and routing information, and board units is reset to dormant state.
The transmitting and receiving of above-mentioned board units use the different working frequency range side antenna equipment that shows the way to be operated in 2 different frequency ranges simultaneously, 1 for launching described routing information incessantly, 1 for receiving the sequence number information that board units is launched incessantly, after described trackside antenna equipment receives described sequence number information, affix timestamp after sequence number information.
Above-mentioned control data corporation can calculate the transport information in this trackside antenna equipment place's some time by the difference of analytical sequence number and timestamp and comprise: control data corporation receive sequence number information and timestamp information are also preserved, by trackside antenna adjacent on position is combined calculating, draw the travel speed of certain vehicle and the time through relevant road segments.
Above-mentioned transport information comprises the traffic flow information of certain certain time point of section, the velocity information of certain vehicle or certain vehicle temporal information through certain section.
The present invention has following advantage and effect relative to prior art:
(1) the trackside antenna equipment one side transmission path information incessantly in the present invention, receive the sequence number of board units on one side incessantly, two kinds of functions play a role simultaneously, be independent of each other, namely solve Path Recognition problem and also solve transport information statistical problem simultaneously, this combination greatly reduces system cost and construction cost.
(2) the present invention accurately can identify the path of board units process, the traffic flow information in accurate count section moment, the travel speed that can obtain certain vehicle more exactly, certain vehicle when can pass through the information such as certain section.
(4) present invention uses high sensitivity, high integration, high transmit power, reach the features such as small size, low-power consumption, high communication speed, communication distance far away, be highly suitable for highway and use.
(5) present system can adopt 433MHz, 460MHz frequency range to communicate, and have the advantages that communication distance is far away, passing through property is strong, these frequency ranges belong to public frequency band, without the need to applying for radio license, is easy to application.Trackside antenna equipment is arranged on portal frame, is placed in above road, only sets up in controversial section and the responsive section of transport information.
Accompanying drawing explanation
Fig. 1 is system diagram of the present invention.
Fig. 2 is trackside antenna equipment (RSU) block diagram of the present invention.
Fig. 3 is board units of the present invention (OBU) block diagram.
Fig. 4 is read write line of the present invention (ODU) block diagram.
Fig. 5 is control data corporation of the present invention (DMC) block diagram.
Fig. 6 is system applicating flow chart of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but the specific embodiment of the present invention is not limited thereto.
There is its function of ambiguity path identifying system of transport information statistical function as shown in Figure 1, system is made up of trackside antenna equipment (RSU), board units (OBU), read write line (ODU) and control data corporation (DMC), its function is the different paths identifying vehicle process, the transport information of statistics road.
Wherein, the signal containing sequence number information that trackside antenna equipment (RSU) is launched about board units (OBU) described in the radiofrequency signal of routing information and continuous reception for lasting transmitting, and described sequence number information affix timestamp information is sent to described control data corporation together, wherein said timestamp information is time when receiving this sequence number information, and different board units has different sequence numbers.As shown in Figure 2, trackside antenna equipment (RSU) C comprises microprocessor 31, ups power module 36, encrypting module 32, 2 independently power amplifier modules 35 and 39, 2 independences and the radio-frequency module 33 and 37 simultaneously worked, 2 independently antenna elements 34 and 40, memory module 41, and remote monitoring module 38, wherein microprocessor 31 and radio-frequency module 33 and 37, encrypting module 32, memory module 41, remote monitoring module 38 connects, power amplifier module 35 is connected with radio-frequency module 33, power amplifier module 39 is connected with radio-frequency module 37, 2 independently radio-frequency module 33 is different with 37 working frequency range, and work simultaneously and be independent of each other, remote monitoring module 38 monitors the duty of trackside antenna equipment C, the sequence number received and timestamp information are sent to control data corporation (DMC) simultaneously.
The routing information of board units (OBU) for first receiving described trackside antenna equipment (RSU) when trackside antenna equipment (RSU) and launching, then be switched to another frequency range and launch described sequence number information to described trackside antenna equipment (RSU).As shown in Figure 3, board units (OBU) B comprises microprocessor 22, button cell module 23, IC-card module 25, memory module 21, radio-frequency module 26 and wake-up circuit 24, wherein microprocessor 22 is connected with memory module 21, radio-frequency module 26, wake-up circuit module 24, button cell module 23, antenna element 27 connects radio-frequency module 26,13.56MHz induction module 20 and connects wake-up circuit module 24.Radio-frequency module 26 is controlled by microprocessor 22, can be operated in 433MHz, 460MHz frequency range, namely during board units (OBU) B received path message, is operated in 433MHz, during transmitting sequence information, is operated in 460MHz; Or during received path message, be operated in 460MHz, during transmitting sequence information, be operated in 433MHz.Board units (OBU) B and trackside antenna equipment (RSU) C carries out two-way two-band communication, board units (OBU) B adopts frequency-hopping mode, when ambiguity path identifying system works in function of path recognition, board units (OBU) B and trackside antenna equipment (RSU) C is operated in 433MHz or 460MHz frequency range, corresponding, when ambiguity path identifying system is operated in transport information statistical function, board units (OBU) B and trackside antenna equipment (RSU) C is operated in 460MHz or 433MHz frequency range.Certainly, radio-frequency module 26 is controlled by microprocessor 22, also can be operated in 900MHz or 2.4GHz frequency range.
Read write line (ODU) is for the IC-card write access information to described board units (OBU), and remove the old routing information of described board units, putting board units is periodic wakeup state.As shown in Figure 4, read write line (ODU) A comprises microprocessor 13, radio-frequency module 14, power module 16, Upper machine communication module 10, IC-card module for reading and writing 12 and IC-card antenna 11, wherein microprocessor 13 is connected with radio-frequency module 14, Upper machine communication module 10, IC-card module for reading and writing 12, IC-card antenna 11 is connected with IC-card module for reading and writing 12, and antenna element 15 is connected with radio-frequency module 14.
Control data corporation (DMC) is provided with Database Systems, by the analysis to described sequence number information and timestamp information, obtains transport information.As shown in Figure 5, control data corporation (DMC) D comprises Database Systems 50, vehicle flow statistical module 52 and remote monitoring module 51, and wherein Database Systems 50 are connected with vehicle flow statistical module 52, remote monitoring module 51.
There is the workflow of the ambiguity path identifying system of transport information statistical function as shown in Figure 6:
1) be placed with read write line (ODU) in road network porch and be in the board units (OBU) of dormant state, read write line is connected with computer by serial ports or USB or network interface, and computer is connected by network with control data corporation.At track entrance, read write line (ODU) is to the IC-card write access information of board units (OBU), remove old routing information, put board units (OBU) for periodic wakeup state, wake-up period is 1.5 seconds, wherein board units (OBU) is operated in the first working frequency range, for transmission path information.Board units (OBU) is consigned to driver, and driver carries OBU and enters road network, and computer uploads to control data corporation information such as the sequence number of board units OBU, vehicle, license plate numbers.
2) difference of owner belonging to road, trackside antenna equipment (RSU) is pre-installed in the road of different owner, and debugging setting is entered to the parameter such as path code, emissive power, trackside antenna equipment (RSU) of the present invention and traditional trackside antenna equipment (RSU) difference are, the broadcast of routing information continues uninterrupted, the reception of board units (OBU) sequence number is also carried out simultaneously, can frequency division, timesharing carry out, as preferably generally selecting frequency division.Routing information by the packet format broadcast of traditional path, packet length 10 bytes, and path code arrange after bag content and length all can not change, it is short and fast to broadcast a frame routing information, can ensure that the vehicle passed through can be successfully identified like this.If the content of bag is always in real-time variation, then the broadcast of routing information will be interrupted, and affects mark rate, and mark rate is again the important indicator of Path Recognition.As shown in Figure 6, driver arrives destination has two paths to walk, and path 1 is through trackside antenna equipment RSU1 and trackside antenna equipment RSU2, and path 2 is through trackside antenna equipment RSU3 and trackside antenna equipment RSU4.Which way to go for tube driver, when board units (OBU) is when trackside antenna equipment (RSU), corresponding path code is recorded in capital, receive new route information and preserve, the sequence number information containing sequence number is sent to trackside antenna equipment (RSU) afterwards at the second working frequency range, after being sent, re-use described first working frequency range.
3) trackside antenna equipment (RSU) launches new route information on one side incessantly for described board units (OBU) reception, receive the sequence number information from board units (OBU) on one side incessantly and affix timestamp, transmitting and receiving are carried out simultaneously, and the transmitting and receiving of trackside antenna equipment (RSU) use different working frequency range respectively, namely be operated in 2 different frequency ranges simultaneously, 1 for launching described routing information incessantly, 1 for receive incessantly described board units launch described sequence number information.
4) the parameter work that provides according to control data corporation of trackside antenna equipment (RSU), periodically once can upload in certain time period the sequence number of all board units (OBU) received and timestamp information to control data corporation (DMC), also can be real-time upload these information to control data corporation (DMC), control data corporation (DMC) is saved in database sequence number and timestamp information, the magnitude of traffic flow in this trackside antenna equipment (RSU) section place some time can be calculated by the difference of analytical sequence number and timestamp, the travel speed of certain vehicle, when certain vehicle passes through the transport information such as certain section, such as control data corporation receive sequence number information and timestamp information are also preserved, by trackside antenna adjacent on position is combined calculating, draw the travel speed of certain vehicle and the time through relevant road segments.In addition, board units (OBU) also can the information such as affix vehicle, license plate number except sending its own sequence extra.
5) in track outlet, read access information in board units (OBU) IC-card and routing information by read write line (ODU), and board units (OBU) is reset to dormant state.
As mentioned above, be one of preferred forms of the present invention.Although described example show and describes the present invention, but do not represent the restriction to the present invention self, those skilled in the art should be understood that, under the prerequisite of the spirit and scope of the present invention not departing from claims definition, can make various change in other form and details, appending claims covers all such changes and modifications in spirit and scope of the invention.
Claims (12)
1. there is an ambiguity path identifying system for transport information statistical function, comprise trackside antenna equipment, read write line, board units and control data corporation, it is characterized in that:
Described trackside antenna equipment for launch about routing information radiofrequency signal and receive the signal containing sequence number information that described board units launches, and described sequence number information affix timestamp information is sent to described control data corporation together, wherein said timestamp information is time when receiving this sequence number information, and different board units has different sequence numbers;
Described read write line is used for the IC-card write access information to described board units, and remove the old routing information of described board units, putting board units is periodic wakeup state;
Described board units is used for the routing information first receiving described trackside antenna equipment through described trackside antenna equipment and launch, then is switched to another frequency range and launches described sequence number information to described trackside antenna equipment;
Described control data corporation is provided with Database Systems, by the analysis to described sequence number information and timestamp information, obtains transport information.
2. the ambiguity path identifying system with transport information statistical function according to claim 1, it is characterized in that: trackside antenna equipment comprises microprocessor, ups power module, encrypting module, power amplifier module, radio-frequency module, antenna element and remote monitoring module (31), wherein said microprocessor is connected with described radio-frequency module, described encrypting module, described remote monitoring module (31), and described power amplifier module is connected with described radio-frequency module.
3. the ambiguity path identifying system with transport information statistical function according to claim 2, it is characterized in that: described power amplifier module, described radio-frequency module and described antenna element all have 2, described 2 radio-frequency module working frequency range are different, and work simultaneously and be independent of each other.
4. the ambiguity path identifying system with transport information statistical function according to claim 2, it is characterized in that: described remote monitoring module (31) monitors the duty of described trackside antenna equipment, the sequence number received and timestamp information are sent to control data corporation simultaneously.
5. the ambiguity path identifying system with transport information statistical function according to claim 2, is characterized in that: described microprocessor is also connected with memory module.
6. the ambiguity path identifying system with transport information statistical function according to claim 1, it is characterized in that: described read write line comprises microprocessor, radio-frequency module, power module, Upper machine communication module, IC-card module for reading and writing and IC-card antenna, wherein said microprocessor is connected with described radio-frequency module, described Upper machine communication module, described IC-card module for reading and writing, and described IC-card antenna is connected with IC-card module for reading and writing.
7. the ambiguity path identifying system with transport information statistical function according to claim 1, it is characterized in that: described board units comprises microprocessor, button cell module, IC-card module, memory module, radio-frequency module and wake-up circuit module, wherein said microprocessor and described memory module, described radio-frequency module, described button cell module, described wake-up circuit model calling, described radio-frequency module, by described Microprocessor S3C44B0X, is operated in 433MHz, 460MHz, 900MHz or 2.4GHz.
8. the ambiguity path identifying system with transport information statistical function according to claim 1, it is characterized in that: described control data corporation comprises Database Systems, vehicle flow statistical module and remote monitoring module (51), and wherein said Database Systems are connected with described vehicle flow statistical module, described remote monitoring module (51).
9. there is a method of work for the ambiguity path identifying system of transport information statistical function as claimed in claim 1, it is characterized in that, comprise the following steps:
A) at track entrance, read write line is to the IC-card write access information of board units, and remove old routing information, putting described board units is periodic wakeup state, and wherein said board units is operated in the first working frequency range, for transmission path information;
B) when described board units is through described trackside antenna equipment, first described board units receives new route information and preserves, send the sequence number information containing sequence number at the second working frequency range to described trackside antenna equipment afterwards, after being sent, re-use described first working frequency range;
C) described trackside antenna equipment launches described new route information on one side incessantly for described board units reception, receive the described sequence number information from described board units on one side incessantly and affix timestamp, transmitting and receiving are carried out simultaneously, and the transmitting and receiving of described trackside antenna equipment use different working frequency range respectively;
D) the parameter work that provides according to control data corporation of described trackside antenna equipment, in real time or periodically described sequence number and timestamp can be sent to described control data corporation, described control data corporation can calculate the transport information in this trackside antenna equipment place's some time by the difference of analytical sequence number and timestamp;
E) in track outlet, read access information in described board units IC-card and routing information by described read write line, and described board units is reset to dormant state.
10. the method for work of ambiguity path identifying system according to claim 9, the transmitting and receiving of wherein said trackside antenna equipment use different working frequency range to refer to respectively: described trackside antenna equipment is operated in 2 different frequency ranges simultaneously, 1 for launching described routing information incessantly, 1 for receiving the described sequence number information that described board units is launched incessantly, after described trackside antenna equipment receives described sequence number information, affix timestamp after sequence number information.
The method of work of 11. ambiguity path identifying systems according to claim 9, wherein said control data corporation can calculate the transport information in this trackside antenna equipment place's some time by the difference of analytical sequence number and timestamp, comprise: described control data corporation receives described sequence number information and timestamp information and preserves, by trackside antenna adjacent on position is combined calculating, draw the travel speed of certain vehicle and the time through relevant road segments.
12. according to the method for work of ambiguity path identifying system described in claim 11, and wherein said transport information comprises the traffic flow information of certain certain time point of section, the velocity information of certain vehicle or certain vehicle temporal information through certain section.
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| CN105426936B (en) * | 2015-11-04 | 2018-02-02 | 长安大学 | Tackle the ambiguity path radio-frequency recognition system being artificially electromagnetically shielded and interactive communication method |
| CN105679069B (en) * | 2016-03-23 | 2018-02-16 | 傅春 | A kind of Smartway traffic system and method for controlling vehicle traveling |
| CN106056678B (en) * | 2016-05-24 | 2019-12-10 | 北京万集科技股份有限公司 | RSU program updating method and system |
| CN106295378A (en) * | 2016-08-26 | 2017-01-04 | 天津七二通信广播股份有限公司 | A kind of roadside unit being applied to path identifying system and safety method |
| CN108520626A (en) * | 2018-03-20 | 2018-09-11 | 深圳市金溢科技股份有限公司 | V2X car-mounted terminals, road side base station, road condition information acquisition method and system |
| CN108694749A (en) * | 2018-04-11 | 2018-10-23 | 东南大学 | A kind of identification of Expressway Multi-path and traffic state estimation method and its system |
| CN108711197B (en) * | 2018-05-24 | 2021-09-17 | 北京握奇智能科技有限公司 | Method and equipment for adaptively adjusting power of vehicle-mounted unit |
| CN109389117B (en) * | 2018-09-28 | 2022-01-21 | 高新兴智联科技有限公司 | Electronic license plate ambiguity implementation method |
| JP7247592B2 (en) * | 2019-01-16 | 2023-03-29 | 株式会社デンソー | Abnormality detection device, abnormality detection program, abnormality detection method and abnormality detection system |
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