CN101349709A - Method and apparatus for detecting vehicle flow information - Google Patents
Method and apparatus for detecting vehicle flow information Download PDFInfo
- Publication number
- CN101349709A CN101349709A CNA2007101389784A CN200710138978A CN101349709A CN 101349709 A CN101349709 A CN 101349709A CN A2007101389784 A CNA2007101389784 A CN A2007101389784A CN 200710138978 A CN200710138978 A CN 200710138978A CN 101349709 A CN101349709 A CN 101349709A
- Authority
- CN
- China
- Prior art keywords
- information
- vehicle
- car
- sign indicating
- indicating number
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention relates to a method and a device for detecting vehicle flow information, wherein the method comprises leading vehicles which are travelling to intercommunicate a digital coding for reflecting vehicle travelling information of the travelling condition through a wireless digital communication mode, and leading vehicle flow information which is integrated by the travelling information of the vehicle to be generated in all the vehicle-carrying devices of vehicles which intercommunicate signals. The method smartly utilizes vehicles which are travelling to be the collecting and the delivering vehicle of vehicle flow information, and the aggregation of the travelling condition information of all the vehicles on any position of a certain road section which is needed can be obtained through detecting one vehicle, and the method completely breaks through the limitation of time, space and sampling objects of the original vehicle flow detection method. An intelligent road traffic light system which utilizes the device for detecting vehicle flow information can greatly improve the capability of accurately predicting road traffic conditions, and maximally play the capacity of road facilities through the optimum timing control of traffic lights.
Description
Technical field
The invention belongs to modern Traffic Information administrative skill field, particularly relate to and obtain the required gordian technique of information of vehicle flowrate in good time accurately and fully of optimum control in good time in the intelligent road traffic signal lamp system.
Background technology
At present, widely used non intelligent road traffic signal lamp owing to its signal lamp sequential can not be adjusted by the real road traffic in good time, thereby often causes the unnecessary time-delay of crossing vehicle.Particularly economically developed city, increasing along with public vehicles, serious day by day by the traffic jam issue that non intelligent traffic lights cause.For addressing this problem, people wish to design the so-called intelligent road traffic signal lamp system that can in good time adjust the signal lamp sequential by the road traffic actual state automatically.For this reason, the pick-up unit of vehicle flowrate just need be set in system, up to the present, the traffic flow detecting method that is adopted mainly contains two kinds: i.e. ground induction coil method and video analysis method.In these two kinds of methods, the former can not perception for the vehicle of no show ground induction coil position, thus one-time detection to be the information of car of a certain moment through the ground induction coil position.Obviously, this is not a vehicle flowrate, obtain information of vehicle flowrate, will be through the accumulative total of certain hour.And be information afterwards, rather than timely information through the information of vehicle flowrate that is obtained after the accumulative total of certain hour.We know that information of vehicle flowrate is the set of the time and space function of multivariate main body in the road traffic, and specifically numerous vehicles change the ensemble of communication of its transport condition in time with the change in space.Therefore, adjust the traffic lights sequential according to this information afterwards, this is nondistinctive with non intelligent traffic lights in itself, controls because they all are a kind of differences that has of carrying out based on time difference information.For obtaining in good time information of vehicle flowrate, the ground induction coil of inspection vehicle flow must be embedded on the position that arrives certain distance before the control crossing, the vehicle ' time of this segment distance is exactly the detection time of vehicle flowrate, but, can eliminate difference detection time though do like this, but can cause the spatial diversity of detection information because of the variation of detection position, if time difference can cause information " time distortion ", and spatial diversity also must cause " spatial distortion " of information, the burial place of old place sense coil is general apart from controlling only tens meters at crossing, at most also has only over one hundred rice, so that making time and spatial diversity is taken into account, but being in good time information of vehicle flowrate, this consequence of taking into account only is confined on one section over one hundred meter the highway section, and the information of other vehicle beyond this is known nothing, that is to say and lost a large amount of detected objects, the deficiency of detected object, obviously can cause the deficiency of quantity of information, the information of this deficiency just is not enough to reflect the integral status of road traffic.Therefore, adopt its " intelligence " level of intelligent road traffic signal lamp system of ground induction coil method very limited, effect of its regulation and control road traffic is also just inevitable very limited; Second method is owing to the restriction that is subjected to the video range of observation, so the limitation of precognition information of vehicle flowrate can be bigger.
In addition, the somebody proposes to adopt the electronic tag of installing as block excessively charging type on the vehicle, the similar device that can launch radar signal or short range radio frequency signal to come the inspection vehicle flow.In fact, these methods all do not overcome the limitation of ground induction coil method: cross the electronic tag block charging type and maybe can launch the car-mounted device of radar signal owing to equally also be " do not arrive can not perception ", problem that is run into and ground induction coil method are just the same; Can launch the device of short range radio frequency signal, be equivalent to the reach of ground induction coil in fact, its effect can not be jumped out the contradiction circle that detected object difference is lost or claimed to time difference, spatial diversity and detected object as the ground induction coil method certainly.
Recently, increasingly mature along with 2.4G-5.8G radio-frequency communication technology, someone proposes to carry out with the method for long-distance radio communication the far distance controlled of road traffic signal lamp again, seeming this way can grasp whole traffic, but this is typical " spatial diversity " control in fact, this spatial diversity is along with the increasing of command range, and " spatial distortion " of information of vehicle flowrate can so can reach stage changed beyond recognition, and the seriousness of its consequence can so can surpass " time distortion ".
Because existing intelligent road traffic signal lamp system nearly all is based upon on the traffic flow detecting method of significant limitations, so all can not obtain true, the enough information of abundant and in good time road traffic, the rationality of its signal lamp sequential with and the economic results in society brought into play also just must be restricted.This is up to now, and intelligent road traffic signal lamp system uses not major reason widely.
The analysis of front is told us, the limitation of existing information of vehicle flowrate detection method can be summed up as the contradiction of time difference, spatial diversity and detected object difference, and all follow a traditional principles unlimitedly and the basic reason that produces this contradiction just is all these methods: promptly a certain moment can only be detected a certain object of a certain locus.And the required information of vehicle flowrate of control of traffic and road is that all measurands are the information of vehicle on all locus, certain highway section of a certain moment.The asymmetric of this method and demand can't overcome above-mentioned contradiction.Basic way just is to create a kind of detection method that can at a time once finish whole measurands on interior all positions of certain space, purpose of the present invention that Here it is.
Summary of the invention
The present invention proposes a kind of information of vehicle flowrate detection method, it is characterized in that this method is made up of following five steps: one, and a kind of digitally coded vehicle traveling information in order to the reflection vehicle running state is produced by the vehicle in travelling and sends with wireless mode; Its two, this information is received by the vehicle in travelling and by the certain condition record; Its three, the vehicle that records other vehicle traveling information together sends own vehicle traveling information and other vehicle traveling information again; Its four, the adjacent vehicle in the certain distance of same highway section carries out the intercommunication circulation of the vehicle traveling information of aforesaid way continuously, forms information of vehicle flowrate accumulation and transmission in the corresponding car-mounted device of rolling stock on certain highway section rapidly; They are five years old, the crossing surface installation is by obtaining the information of vehicle flowrate that required last crossing is accumulated by the in good time driving information of rolling stock to this highway section, crossing with car communication wherein, and put in order and add up, instruction has thereafter sent the vehicle of information with its information of vehicle flowrate zero clearing.
A kind of digitally coded vehicle traveling information of the present invention by testing vehicle register sign indicating number, vehicle location sign indicating number, travel direction sign indicating number, travel speed sign indicating number, turn to and require sign indicating number and time tag sign indicating number to form, and be added with this car information characteristics sign indicating number;
Information of vehicle flowrate of the present invention is made up of a plurality of vehicle traveling informations record, exists with the data layout of information of vehicle flowrate table, and is added with the condition code that is different from this car information;
The data layout of information of vehicle flowrate table of the present invention is:
Coding when LSN identity code position code speed sign indicating number turns to yard
1
2
.
Of the present invention car vehicle traveling information and other vehicle traveling information of depositing also are that the wagon flow scale sends in proper order by two data packet formats when together sending again.
The record condition of vehicle traveling information of the present invention is: the testing vehicle register sign indicating number is unique, the travel direction sign indicating number is identical, the time tag sign indicating number is up-to-date;
The Program Realizing Method of vehicle traveling information record condition of the present invention is: is the first step examination outer car of receiving travel direction sign indicating number and this car direction code that travels that travels in the information identical? as, whether has Cha Benche had this car identity code again? as not having, then write down this car and travel and entered for second step after the information; If any, then directly entered for second step: check the testing vehicle register sign indicating number in the information of vehicle flowrate table that information of vehicle flowrate table that this car of receiving write down and this car write down one by one, write down the vehicle traveling information of newfound testing vehicle register sign indicating number correspondence; The testing vehicle register sign indicating number is identical and have that the target vehicle traveling information refreshes vehicle traveling information record corresponding in this car information of vehicle flowrate table when up-to-date, entered for the 3rd step thereafter; Check this car direction code that travels as the above-mentioned first step, find differently with this car direction code that travels, then whether has Cha Benche recorded this car identity code again? if any, then delete in this car information of vehicle flowrate table and entered for the 3rd step behind this car running information record; As not having, then directly entered for the 3rd step: check the markers of all vehicle traveling informations of this car information of vehicle flowrate table, with markers information deletion before (as 10 seconds) at the appointed time; Check this car again and travel in direction code and this car information of vehicle flowrate table whether identical in institute if depositing vehicle travel direction sign indicating number? as, then finish this step, as difference, then delete and all deposited end this step in record back in this car information of vehicle flowrate table;
The method that surface installation of the present invention is put in order and added up the reception information of vehicle flowrate is: travel the time of arrival that vehicle location, travel speed and this check point position calculation in the information go out corresponding each car according to each car earlier; Require classification with the time period with turning to then, count the vehicle number that corresponding intersection will arrive on all directions track in each following time period;
The statistical form data layout that surface installation of the present invention adopted is:
Time period craspedodrome quantity right-hand rotation quantity left-hand rotation quantity
1-10 second
11-20 second
21-30 second
Include the testing vehicle register sign indicating number that to carry out this instruction in the information of vehicle flowrate table clear command that surface installation of the present invention sends.
The corresponding car-mounted device that information of vehicle flowrate detection method of the present invention relates to includes: radio frequency reception and signal demodulation unit, rf modulations and transmitter unit, microprocessor unit, display unit, communication interface and power supply is characterized in that: a satnav unit links to each other with microprocessor unit and provides vehicle location coded signal, travel direction coded signal, travel speed coded signal and time tag coded signal to processor unit in addition; One turn signal unit links to each other with microprocessor unit and provides to turn to microprocessor unit and requires signal; One is stored in the system control program of its microprocessor unit internal memory, finishes the communication of the communication of vehicle and vehicle, vehicle and surface installation to control described device; Decoding, the identification of the outer vehicle traveling information of receiving, store and refresh.
The corresponding surface installation that information of vehicle flowrate detection method of the present invention relates to includes to be penetrated: reception frequently and signal demodulation unit, rf modulations and transmitter unit, microprocessor unit, display unit, communication interface and power supply, it is characterized in that: have system control program in the microprocessing unit, finish information of vehicle flowrate reception, arrangement and statistics to control described device.
The present invention utilizes vehicle itself in travelling as the collection and the tool for transmitting of information of vehicle flowrate dexterously, make almost be any moment at intervals with all interior vehicles all in collection and the transmission of carrying out information of vehicle flowrate on one's own initiative, so how long pipeline does not have, car has the more, obtaining of information of vehicle flowrate can be by the finishing an of car easy to detectly, and this has just realized purpose of the present invention.
The invention has the beneficial effects as follows: because the present invention has broken through the limitation of time, space and the detected object of vehicle Flow Detection method in the past fully, use intelligent road traffic signal lamp of the present invention system can improve the ability of accurate precognition road traffic condition greatly, accomplish to bring into play to greatest extent the traffic capacity of road traffic with the optimum control in good time of traffic lights, under existing road traffic condition, try to achieve best economic results in society, and less urban construction investment is arranged.The present invention also can be widely used in other road traffic IMIS.So the present invention has significant advance and extremely strong practicality.
Description of drawings
Fig. 1 is a traffic flow detecting method precedence diagram of the present invention
Fig. 2 is a vehicle traveling information condition logging program process flow diagram
Fig. 3 is a car-mounted device structured flowchart of the present invention
Fig. 4 is information of vehicle flowrate arrangement and statistics program process flow diagram
Specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing
Present embodiment is made up of car-mounted device and surface installation, and described car-mounted device and ground are contained under the control of their built-in system programs and realize the traffic flow detecting method that the present invention proposes by step shown in Figure 1:
Car-mounted device of the present invention as shown in Figure 3 includes satnav unit (1), turn signal unit (2), radio frequency reception and signal demodulation unit (3), microprocessor unit (4), rf modulations and transmitter unit (5), communication interface unit (6) display unit (7) and power supply (8).During vehicle ', the time border will value that satnav unit (1) can in time calculate travel direction value, present position value, the travel speed value of this car and produce these numerical value, and be compiled into corresponding binary code, by the I that links to each other with microprocessor unit (4)
2The C bus provides to processor unit (4); Send to turn signal unit (2) and turn to when requiring signal when the driver presses turn signal key or vehicle steering device, a correspondent voltage signal just can be sent into to microprocessor unit (4) one input end of analog signal mouths in turn signal unit (2), microprocessor unit (4) is this magnitude of voltage after testing, just know that the concrete requirement that turns to (is craspedodrome as 0-1V, 2-3V is for turning right, 4-5V is for turning left, the system default state is for keeping straight on), so can produce the binary code of a correspondence, microprocessor unit (4) is in the travel direction of obtaining above-mentioned car, vehicle location, travel speed, time tag and turn to the binary code of requirement after, just the full code of information can travel synthetic this car that contains the particular data packet format of this car identity code that they preset with this car-mounted device, give this car information register that travels to deposit, send rf modulations and transmitter unit (5) emission again.This has just finished the first step of the inventive method as shown in Figure 1.Wireless digital communication technology of the present invention is present known mature technology, as the detection data wireless transmission technology based on 2.4G, its enough bandwidth, high transfer rate, advanced frequency hopping just are being fit to solve the problem of channel confliction and high speed communication in this programme.
Radio frequency in the car-mounted device of the present invention as shown in Figure 3 receives the radiofrequency signal by the vehicle traveling information modulation that also can receive outer car emission with signal demodulation unit (3), and send microprocessor unit (4) pulse signal input terminal with the pulse sequence signal after the demodulation, microprocessor unit (4) is received the digitally encoded signal that can demodulate this vehicle ' signal behind this signal by predefined sequence rules, and deposit in the corresponding temporary register, thereafter unique with the testing vehicle register sign indicating number, the travel direction sign indicating number is identical, the up-to-date information that is received by vehicle traveling information condition logging program shown in Figure 2 record for condition of time tag sign indicating number, and it is added and this car different data packet format sign indicating number of information that travels.Vehicle traveling information condition logging program shown in Figure 2 has not only guaranteed the uniqueness of recorded information and the homogeneity of direction, has also guaranteed to particular importance the timeliness of recorded information.This has just finished second step of the inventive method as shown in Figure 1.
Car-mounted device of the present invention as shown in Figure 3 is after receiving and having write down outer car vehicle traveling information, its microprocessor unit (4) send rf modulations and transmitter unit (5) to launch by two groups of data packet formats this car vehicle traveling information and the whole outer car information of travelling that is write down under the control of system software again.This has just finished the 3rd step of the inventive method as shown in Figure 1.
Travel on the same highway section at a distance of continuously carrying out the circulation of above-mentioned one, two, three steps signal intercommunication as described in it in the car-mounted device under the control of microprocessor unit (4) at system program with interior adjacent vehicle, so all participate in all having formed in the car-mounted device of signal intercommunication vehicles the information of vehicle flowrate table that the driving information set by these vehicles forms at certain distance (as 100 meters).Finishing the time cycle of this cycling can calculate like this: the transfer rate of establishing signal is 10M/ second; Article one, the record length of vehicle traveling information is 100 bytes; There are 100 cars to pass mutually carrying out such information; Be about 100 * 100=10K byte so can obtain the record length of each car, the time of finishing the primary information transmission is 10K ÷ 10M/ second=1/1000 second, i.e. 1 microsecond; Consider time-delay and program runtime that channel confliction may cause again, the time of biography is about 2 microseconds mutually to finish primary information, the time of unidirectional delivery information is 200 microseconds to 100 cars successively, and the mode of transmitting information in this example between the vehicle is that twocouese and all vehicles carry out simultaneously, so its required time is no more than 100 microseconds at most.Therefore, finish between 100 cars information transfer time and only need 1/10 second.This has just finished the 4th step of the inventive method as shown in Figure 1.
When above-mentioned any garage sails to signal lamp control crossroad, nigh vehicle Flow Detection surface installation is set receives the information of vehicle flowrate table that this car sends, obviously this information table is comprising the driving information of sailing almost whole follow-up vehicles in last crossing to this highway section, crossing of coming from this car, and this information can think to be exactly to form at that time.The signal reception of pavement device and emission process and car device are just the same, relevant hardware unit and software are also just the same, also be provided with in the system controlling software of different is pavement device special as shown in Figure 4 information of vehicle flowrate arrangement, statistics and send the program of specifying wagon flow scale clear command, the method that this program realizes is: time of arrival that goes out corresponding each car according to vehicle location, travel speed and this check point position calculation of each car in the return the vehicle to the garage and knock off information of vehicle flowrate table earlier; The wagon flow scale clear command that will contain this car identity code then gives modulation of this device radiofrequency signal and transmitter unit to send; Require classification with the time period with turning to again, go out the vehicle number that corresponding intersection will arrive on all directions track in each following time period according to calculated data statistics.Here it is the in good time information of vehicle flowrate that is formed by rolling stock transport condition on the control highway section really, obviously, this is that the road traffic signal lamp system realizes that optimum is in good time and controls required information.This has just finished the 5th step of the inventive method as shown in Figure 1.
Communication interface unit in the car-mounted device shown in Figure 3 (6) is in order to finish and other digital device swap data, as presetting of this car identity code; Display unit (7) shows in order to operation; Power supply (8) is in order to power to this car-mounted device.
Claims (12)
1. information of vehicle flowrate detection method is characterized in that this method is made up of following five steps: one, and a kind of digitally coded vehicle traveling information in order to the reflection vehicle running state is produced by the vehicle in travelling and sends with wireless mode; Its two, this information is received by the vehicle in travelling and by the certain condition record; Its three, the vehicle that records other vehicle traveling information together sends own vehicle traveling information and other vehicle traveling information again; Its four, the adjacent vehicle in the certain distance of same highway section carries out the intercommunication circulation of the vehicle traveling information of aforesaid way continuously, forms information of vehicle flowrate accumulation and transmission in the corresponding car-mounted device of rolling stock on certain highway section rapidly; They are five years old, one crossing surface installation is by obtaining the information of vehicle flowrate that required last crossing is accumulated by the in good time driving information of rolling stock to this highway section, crossing with car communication wherein, and put in order and add up, instruction has thereafter sent the vehicle of information with its information of vehicle flowrate zero clearing.
2. according to the described a kind of information of vehicle flowrate detection method of claim 1, it is characterized in that digitally coded vehicle traveling information by testing vehicle register sign indicating number, vehicle location sign indicating number, travel direction sign indicating number, travel speed sign indicating number, turn to and require sign indicating number and time tag sign indicating number to form, and be added with this car information characteristics sign indicating number that travels.
3. according to the described a kind of information of vehicle flowrate detection method of claim 1, it is characterized in that information of vehicle flowrate is made up of a plurality of vehicle traveling informations, exist with the data layout of information of vehicle flowrate table, and be added with and be different from the travel condition code of information of this car.
4. according to claim 1,3 described a kind of information of vehicle flowrate detection methods, it is characterized in that the data layout of information of vehicle flowrate table is:
Coding when LSN identity code position code speed sign indicating number turns to yard
1
2
·
·
5. according to the described a kind of information of vehicle flowrate detection method of claim 1, it is characterized in that this car vehicle traveling information and other vehicle traveling information of depositing also are that the wagon flow scale sends in proper order by two data packet formats when together sending again.
6. according to the described a kind of information of vehicle flowrate detection method of claim 1, it is characterized in that the record condition of vehicle traveling information is: the testing vehicle register sign indicating number is unique, the travel direction sign indicating number is identical, the time tag sign indicating number is up-to-date.
7. according to claim 1,6 described a kind of information of vehicle flowrate detection methods, the Program Realizing Method that it is characterized in that the vehicle traveling information record condition is: is the first step examination outer car of receiving travel direction sign indicating number and this car direction code that travels that travels in the information identical? as, whether has Cha Benche had this car identity code again? as not having, then write down this car and travel and entered for second step after the information; If any, then directly entered for second step: check the testing vehicle register sign indicating number in the information of vehicle flowrate table that information of vehicle flowrate table that this car of receiving write down and this car write down one by one, write down the vehicle traveling information of newfound testing vehicle register sign indicating number correspondence; The testing vehicle register sign indicating number is identical and have that the target vehicle traveling information refreshes vehicle traveling information record corresponding in this car information of vehicle flowrate table when up-to-date, entered for the 3rd step thereafter; Check this car direction code that travels as the above-mentioned first step, find differently with this car direction code that travels, then whether has Cha Benche recorded this car identity code again? if any, then delete in this car information of vehicle flowrate table and entered for the 3rd step behind this car running information record; As not having, then directly entered for the 3rd step: check the markers of all vehicle traveling informations of this car information of vehicle flowrate table, with markers information deletion before (as 10 seconds) at the appointed time; Check this car again and travel in direction code and this car information of vehicle flowrate table whether identical in institute if depositing vehicle travel direction sign indicating number? as, then finish this step, as difference, then delete and all deposited end this step in record back in this car information of vehicle flowrate table.
8. according to the described a kind of information of vehicle flowrate detection method of claim 1, it is characterized in that the method that surface installation is put in order and added up reception information of vehicle flowrate table is: travel the time of arrival that vehicle location, travel speed and this check point position calculation in the information go out corresponding each car earlier according to each car; Require classification with the time period with turning to then, count the vehicle number that corresponding intersection will arrive on all directions track in each following time period.
9. according to claim 1,8 described a kind of information of vehicle flowrate detection methods, it is characterized in that the statistical form data layout that surface installation adopts is:
Time period craspedodrome quantity right-hand rotation quantity left-hand rotation quantity
0-10 second
11-20 second
21-30 second
·
· 。
10. according to the described a kind of information of vehicle flowrate detection method of claim 1, it is characterized in that including the testing vehicle register sign indicating number that to carry out this instruction in the information of vehicle flowrate table clear command that described surface installation sends.
11. the corresponding car-mounted device that relates to according to the described a kind of information of vehicle flowrate detection method of claim 1 includes: radio frequency reception and signal demodulation unit, rf modulations and transmitter unit, microprocessor unit, display unit, communication interface and power supply is characterized in that: a satnav unit links to each other with microprocessor unit and provides vehicle location coded signal, travel direction coded signal, travel speed coded signal and time tag coded signal to processor unit in addition; One turn signal unit links to each other with microprocessor unit and provides to turn to microprocessor unit and requires signal; One is stored in the system control program in its microprocessor unit internal memory, finishes the communication of the communication of vehicle and vehicle, vehicle and surface installation to control described device; Decoding, the identification of the outer vehicle traveling information of receiving, store and refresh.
12. the corresponding surface installation that relates to according to the described a kind of information of vehicle flowrate detection method of claim 1 includes: radio frequency reception and signal demodulation unit, rf modulations and transmitter unit, microprocessor unit, display unit, communication interface and power supply, it is characterized in that: have system control program in the microprocessing unit, finish information of vehicle flowrate reception, arrangement, statistics and send appointment wagon flow scale clear command to control described device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101389784A CN101349709A (en) | 2007-07-17 | 2007-07-17 | Method and apparatus for detecting vehicle flow information |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101389784A CN101349709A (en) | 2007-07-17 | 2007-07-17 | Method and apparatus for detecting vehicle flow information |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101349709A true CN101349709A (en) | 2009-01-21 |
Family
ID=40268569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101389784A Pending CN101349709A (en) | 2007-07-17 | 2007-07-17 | Method and apparatus for detecting vehicle flow information |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101349709A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102473346A (en) * | 2009-07-29 | 2012-05-23 | 丰田自动车株式会社 | Vehicle controller, control method for vehicle and control system for vehicle |
| CN106915355A (en) * | 2015-12-24 | 2017-07-04 | 北京奇虎科技有限公司 | The method and system of motoring condition is adjusted according to Weather information |
| CN108010343A (en) * | 2017-10-31 | 2018-05-08 | 上海与德科技有限公司 | A kind of control method of traffic lights, control device and control system |
| CN110083594A (en) * | 2019-04-24 | 2019-08-02 | 广东联合电子服务股份有限公司 | A kind of elimination method and device of terminating machine jump data |
| CN110689721A (en) * | 2019-10-14 | 2020-01-14 | 广州珠江黄埔大桥建设有限公司 | Traffic group record management system based on physical address generation |
| CN111091633A (en) * | 2019-10-14 | 2020-05-01 | 广州珠江黄埔大桥建设有限公司 | Driving recording system based on user terminal |
| CN112818004A (en) * | 2021-01-21 | 2021-05-18 | 杭州海康威视数字技术股份有限公司 | Data storage method, query method and electronic equipment |
-
2007
- 2007-07-17 CN CNA2007101389784A patent/CN101349709A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102473346A (en) * | 2009-07-29 | 2012-05-23 | 丰田自动车株式会社 | Vehicle controller, control method for vehicle and control system for vehicle |
| CN102473346B (en) * | 2009-07-29 | 2014-01-22 | 丰田自动车株式会社 | Vehicle controller, control method for vehicle and control system for vehicle |
| CN106915355A (en) * | 2015-12-24 | 2017-07-04 | 北京奇虎科技有限公司 | The method and system of motoring condition is adjusted according to Weather information |
| CN106915355B (en) * | 2015-12-24 | 2021-02-02 | 北京奇虎科技有限公司 | Method and system for adjusting automobile driving state according to weather information |
| CN108010343A (en) * | 2017-10-31 | 2018-05-08 | 上海与德科技有限公司 | A kind of control method of traffic lights, control device and control system |
| CN110083594A (en) * | 2019-04-24 | 2019-08-02 | 广东联合电子服务股份有限公司 | A kind of elimination method and device of terminating machine jump data |
| CN110689721A (en) * | 2019-10-14 | 2020-01-14 | 广州珠江黄埔大桥建设有限公司 | Traffic group record management system based on physical address generation |
| CN111091633A (en) * | 2019-10-14 | 2020-05-01 | 广州珠江黄埔大桥建设有限公司 | Driving recording system based on user terminal |
| CN112818004A (en) * | 2021-01-21 | 2021-05-18 | 杭州海康威视数字技术股份有限公司 | Data storage method, query method and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101349709A (en) | Method and apparatus for detecting vehicle flow information | |
| CN100444211C (en) | Intelligent traffic crossing control method | |
| CN101937617B (en) | Crossing lane coordinate positioning and signal phase wireless transmission method | |
| CN104575038A (en) | Intersection signal control method considering priority of multiple buses | |
| CN103646556A (en) | Control system and control method for dynamic adjusting of traffic light time | |
| CN108010348B (en) | Intersection signal priority system and method of intelligent rail train | |
| CN102421219A (en) | Streetlight network control method and network structure thereof | |
| CN100498845C (en) | Intelligent expressway toll and prewarning system and method thereof | |
| CN103065478B (en) | Vehicle and traffic light two-way information exchange controller | |
| CN101739828A (en) | Urban traffic area jamming judgment method by combining road traffic and weather state | |
| CN104900060A (en) | Intelligent management monitoring system for convenient parking in urban areas | |
| CN104778840A (en) | Vehicle information sensing system and method | |
| CN104900067A (en) | Intelligent wireless vehicle detection system based on geomagnetic sensor | |
| CN107248299A (en) | Special-lane bus priority trunk line coordination control method based on standing time | |
| CN203118234U (en) | Energy saving driving prompting system based on ATMS | |
| CN107293135A (en) | A kind of crossing self-adapting vehicle U-turn at intersection traffic guidance system and control method | |
| CN105427629A (en) | Implementing technology for road traffic light adaptive control | |
| CN105654743A (en) | Crossroad traffic control system and control method thereof | |
| CN105279995A (en) | Road traffic guiding method based on positioning system and road traffic guiding system | |
| CN102737514B (en) | The wagon detector that can release news, traffic congestion detecting device, vehicle attribute detecting device | |
| KR102284504B1 (en) | Standalone apparatus for controlling traffic signal lamp | |
| CN103116992A (en) | Four-road annular intersection design method based on single entrance release | |
| CN101329817A (en) | Intelligent signal control method for capturing and sharing traffic information | |
| CN105303849A (en) | Inductive arterial road coordination control method based on electronic tag | |
| CN105206047A (en) | Intelligent traffic system based on tree-form wireless communication network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| DD01 | Delivery of document by public notice |
Addressee: Huihuang Electronics Co., Ltd., Shenzhen City Document name: the First Notification of an Office Action |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090121 |