CN108417071B - A kind of semaphore clock check method based on intersection identity detection data - Google Patents
A kind of semaphore clock check method based on intersection identity detection data Download PDFInfo
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Abstract
The present invention discloses a kind of semaphore clock check method based on intersection identity detection data, specifically: it obtains intersection identity detection data and semaphore lamp state records data；Based on intersection identity detection data, obtain each lane crosses vehicle time detection sequence, divides vehicle group, and instead release semaphore lamp state switch instant, as the anti-knot fruit of lane grade；It is counter to push away semaphore phase runing time, summarize the anti-lamp state switch instant pushed away in each lane of same phase, then obtain the lamp state switch instant of the phase.Letter prosecutor case lamp state switch instant is pushed away by the way that intersection identity detection data is counter, the lamp state switch instant of anti-knot fruit and semaphore record is compared, to judge whether the identity detection device of the intersection, semaphore, the clock of data storage device are consistent.The present invention solve between distinct device and work system because caused by timing differential detection data matched can not monitor, check problem, while accumulated error will not be generated.
Description
Technical field
The present invention relates to Vehicle Detection fields, more particularly, to a kind of signal based on intersection identity detection data
Machine clock check method.
Background technique
With enriching constantly for Vehicle Detection means, the traffic data scale of multi-source increases at a terrific speed,
Urban transportation public security intersection identity Inspection and monitoring system becomes component part important in China's urban traffic control system.Road
Road intersection identity Inspection and monitoring system by being distributed in the high-definition camera set up on road, using advanced photoelectric technology,
The technologies such as image processing techniques and pattern-recognition carry out round-the-clock real time monitoring to vehicular traffic and capture, and can obtain lane
Grade vehicle identity information, flow distribution situations such as.Intersection identity detection system can be used as traffic administration, traffic information hair
The significant data source of cloth and basic technology support system, by the friendship for calculating different periods, different sections of highway, different driving directions
Prong identity detection flows, vehicle journeys time etc. provide more comprehensive, reliable traffic letter for traffic administration person and traveler
Breath provides effective data supporting for traffic state judging, traffic optimization etc..
In the analytic process of intersection identity detection data, inevitably it is related to the data of other not homologous rays
(semaphore etc.), and the clock of intersection identity detection detection device, signal machine equipment and respective data storage equipment, can be because
Existing timing differential between distinct device and work system and the inaccuracy for resulting in data, in some instances it may even be possible to be analyzed for traffic information
The guidance of mistake is provided.When being all the artificial timing differential for checking distinct device or school regular for off-line device at present.
Summary of the invention
To overcome above-mentioned the deficiencies in the prior art, the invention proposes a kind of signals based on intersection identity detection data
Machine clock check method, this method are a kind of with good implementation, efficient, inexpensive, data-driven intersection
The mutual method of calibration of identity detection clock and semaphore clock.
In order to solve the above technical problems, technical scheme is as follows:
A kind of semaphore clock check method based on intersection identity detection data, comprising the following steps:
S1: obtaining intersection identity detection data and semaphore lamp state records data；Including same intersection, same phase
Under intersection identity detection data and semaphore lamp state record data；
S2: the vehicle group of intersection identity detection data divides；Based on intersection identity detection data, the mistake in each lane is obtained
Vehicle time detection sequence divides " Che Qun ", and instead releases lamp state of the semaphore in each lane by formula (1) and record the time, makees
For the anti-knot fruit of lane grade；
" Che Qun " refers on unidirectional lane, and the difference for spending the vehicle time that intersection identity checkout facility obtains is less than pre-
If N vehicle of the arbitrary continuation of value T；Wherein, N >=3.
In formula (1),
Ti S: the green light start time of phase i, wherein i={ 1,2 ..., k }, k are the phase sum of the intersection；
tL: the time is lost in the current starting of vehicle group；
tH: the time headway of each element of vehicle group；
During the green light of phase i, the intersection identity detection moment of Che Qunzhong jth vehicle；
M: the vehicle number that intersection identity checkout facility detection zone can accommodate；
S3: the anti-phase runing time for pushing away semaphore；The time is recorded based on the S2 lamp state for calculating each lane of same phase,
Obtain counter the pushing away the time of phase operation, process again are as follows: preferentially the quantity of confidence time headway sequence rank the first, two vehicle
The anti-knot fruit in road；It is less than setting value T when the anti-knot fruit in the two lanes corresponding time differencethWhen, then it is relatively forward to will test the time
The phase runing time that is derived as this of anti-knot fruit；
S4: the S3 anti-runing time pushed away of each phase in intersection generated is summarized, is obtained by intersection identity detection data
The anti-lamp state record time pushed away, the anti-knot fruit and semaphore lamp state are recorded into comparing for data；When all phases in intersection
The error of the anti-knot fruit in position and semaphore record result is respectively less than given threshold value, then it is assumed that the intersection identity of the intersection detects
Equipment, semaphore, data storage device clock are consistent；Otherwise inconsistent.
In a preferred solution, anti-the step of pushing away semaphore lamp state record data summary: 1) when certain phase is in green light
When latter stage does not have vehicle to pass through stop line, since identity detection in intersection can not obtain corresponding vehicle detecting information, it will lead to pair
It can not provide in the green light end time of the phase and more accurately judge；2) premise known to the phase sequence of letter prosecutor case
Under, the finish time for correcting previous phase green light is gone using the green light start time of adjacent phase, generates complete actual signal
The runing time of each phase of control program, shown in correction formula such as following formula (2):
In formula (2),
The green light finish time of phase i-1；
Δti-1: phase i-1 amber light duration, when i value is 1, previous phase refers to the last one of a letter control period
Phase.
The present invention discloses a kind of semaphore clock check method based on intersection identity detection data, and this method is related to portion
Affix one's name to detection (operation) data in two different infrastructure systems of same intersection, comprising: intersection identity detection data
Data are recorded with semaphore lamp state.Since intersection identity detection system and annunciator system work independently in same intersection,
Corresponding detection (operation) data are generated, although the generation of two class data, securing mechanism difference, the two have pass in logic
Connection: being the record for the operation of same intersection traffic.The present invention solves between distinct device and work system because of clock difference
Caused by different detection data matched can not monitor, Proofreading Problems.Key step has: obtain intersection identity detection data and
Semaphore lamp state records data；The vehicle group of intersection identity detection data divides；The anti-phase runing time for pushing away semaphore；It generates
The anti-semaphore lamp state record time pushed away；When the anti-knot fruit of all phases in intersection and the error of semaphore record result are respectively less than
Given threshold value, then it is assumed that intersection identity detection device, semaphore, the data storage device clock of the intersection are consistent；Otherwise,
The signal machine equipment of recording clock exception and program when starting school.
In a preferred solution, the intersection identity detection data includes intersection identity detection device position
The process moment, vehicle identity information of information, individual vehicle.
In a preferred solution, semaphore lamp state record data include semaphore location information and lamp group fortune
Row temporal information.
In a preferred solution, the intersection identity detection device includes bayonet, electronic license plate, microwave inspection
Survey, geomagnetism detecting, group, charge station card, video monitoring etc..
Compared with prior art, the beneficial effect of technical solution of the present invention is: 1, can not increase any existing detection
Under conditions of equipment, the advantage of intersection identity detection device is made full use of, equipment cost has been saved；2, each letter controls the period
Lamp state log, it is mutually indepedent in calculating logic, it not will cause error accumulation；3, calculation method is simple, standard with higher
True rate and practical guided significance.
Detailed description of the invention
Fig. 1 is the calculation method process of the semaphore clock check method design based on intersection identity detection data
Figure.
Specific embodiment
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；In order to better illustrate this embodiment, attached
Scheme certain components to have omission, zoom in or out, does not represent the size of actual product；
To those skilled in the art, it is to be understood that certain known features and its explanation, which may be omitted, in attached drawing
's.The following further describes the technical solution of the present invention with reference to the accompanying drawings and examples.
A kind of semaphore clock check method based on intersection identity detection data, comprising the following steps:
S1: obtaining intersection identity detection data and semaphore lamp state records data；Including same intersection, same phase
Under intersection identity detection data and semaphore lamp state record data, intersection identity detection data includes intersection inspecting identity
Measurement equipment number crosses the information such as vehicle moment, vehicle identification；Semaphore lamp state record data include signal serial number and lamp group operation
The information such as time；The two is respectively set by static table " intersection identity detection device-semaphore-intersection related information table "
The standby related information with intersection position；
S2: the vehicle group of intersection identity detection data divides；Based on intersection identity detection data, the mistake in each lane is obtained
Vehicle time detection sequence divides " Che Qun ", and instead releases lamp state of the semaphore in each lane using formula (1) and record the time, makees
For the anti-knot fruit of lane grade；
In formula (1),
Ti S: the green light time started of phase i, wherein i={ 1,2 ..., k }, k are the phase sum of the intersection；
tL: the time is lost in the current starting of vehicle group；
tH: the time headway of each element of vehicle group；
During the green light of phase i, the intersection identity of Che Qunzhong jth vehicle detects detection time；
M: the vehicle number that intersection identity detection detection zone can accommodate；
S3: the anti-phase runing time for pushing away semaphore；The time is recorded based on the S2 lamp state for calculating each lane of same phase,
Obtain counter the pushing away the time of phase operation, process again are as follows: preferentially the quantity of confidence time headway sequence rank the first, two vehicle
The anti-knot fruit in road；It is less than setting value T when the anti-knot fruit in the two lanes corresponding time differencethWhen, then it is relatively forward to will test the time
The phase runing time that is derived as this of anti-knot fruit；
S4: the S3 anti-runing time pushed away of each phase in intersection generated is summarized, is obtained by intersection identity detection data
The anti-lamp state record time pushed away, the anti-knot fruit and semaphore lamp state are recorded into comparing for data；When all phases in intersection
The error of the anti-knot fruit in position and semaphore record result is respectively less than given threshold value, then it is assumed that the identity detection device of the intersection,
Semaphore, data storage device clock are consistent；Otherwise inconsistent.
Embodiment one
According to the above process, the detection data of the separate sources of a certain period, a certain intersection or a certain phase is calculated
Whether match, by being researched and analysed to intersection identity detection data, can be provided for traffic administration person more comprehensively, reliably
Traffic information, can it is more objective, automatically understand intersection identity detection system, annunciator system and data-storage system
Work Stability and veracity, to provide effective data supporting for traffic state judging, traffic optimization etc..
Data source chooses Xuancheng City, Anhui Province intersection certain workaday morning peak period (7:30-9:00) in 2017
Intersection identity detection data and semaphore lamp state record data, including intersection identity detection section number, lane number,
Cross the information such as vehicle time, traffic lights conversion time, license plate；Corresponding data structure is as shown in table 1 below:
The detection of 1 intersection identity of table and semaphore lamp state record data structure
| Serial number | Field name | Type (length) | Field description |
| 1 | SSID | VARchar2(30)not null | Facility ID |
| 2 | CDBH | NUMBER(2) | Lane number |
| 3 | JGSJ | DATE not null | Vehicle passes through the time |
| 4 | JCKBH | VARchar2(8) | Intersection number |
| 5 | JKD | VARchar2(4) | Entrance driveway number |
| 6 | CDZ | VARchar2(10) | Lane group # |
| 7 | KSSJ | DATE | The green light time started |
| 8 | JSSJ | DATE | The green light end time |
| 9 | HPHM | VARchar2(15) | License plate number |
Intersection identity detection data (table 2) and semaphore lamp state record data (table 3) example are as follows:
2 intersection identity detection data example of table
| SSID | HPHM | JGSJ | CDBH |
| HK-84 | Anhui PV**** | 2017/**/**8:37:19 | 3 |
| HK-84 | Anhui PL**** | 2017/**/**8:38:02 | 3 |
| HK-84 | Anhui PY**** | 2017/**/**8:38:22 | 3 |
| HK-84 | Anhui P8**** | 2017/**/**8:38:25 | 3 |
3 semaphore of table records data instance
| JCKBH | JKD | CDZ | KSSJ | JSSJ |
| 1013 | East | Straight trip | 2017/**/**8:36:11 | 2017/**/**8:36:44 |
| 1013 | West | Turn left | 2017/**/**8:38:11 | 2017/**/**8:38:44 |
Based on vehicle " abiding by chapter traveling " hypothesis and intersection " green light is current " principle, signal is carried out according to formula (1), (2)
Machine lamp state record the counter of time pushes away, and matches the detection time for meeting " Che Qun " criteria for classifying in time headway and corresponding Extrapolation
What (starting loss, intersection identity detect detection zone basic parameter) obtained counter pushes away green light time started and actual signal machine lamp
State records the true value comparison of time, as shown in table 4 below:
4 Extrapolation result of table and actual signal machine lamp state Record Comparison
By the comparison result of Extrapolation result in upper table 4 and actual signal machine lamp state record, it is known that the method for the present invention is set
Meter thinking can relatively accurately feed back the practical moment of semaphore lamp state conversion out.In addition, if occurring by semaphore hardware fault
When caused clock exception, this method can letter using the anti-design for pushing away semaphore lamp state switch instant of intersection identity detection data
Clock abnormal problem that is single, in real time, efficiently finding the semaphore.This method is suitable for the volume of traffic biggish peak period,
Output result has very good performance.This method is method that is a kind of inexpensive and efficiently executing, can be used not only for intersection
The mutual verification of identity detection system and annunciator system clock can also detect deleted signal machine in off-line analysis for intersection identity
When record, provide it is relatively accurate, reliable it is counter push away data, and for only intersection identity detection data under conditions of, traffic
Information analysis provides related guide.
In conclusion the semaphore clock check method proposed by the present invention based on intersection detection data has following three
A feature: 1, do not increase any existing detection device under conditions of existing intersection identity detection data can be made full use of
Advantage, saved equipment cost；2, counter to push away each letter control period, it is mutually indepedent in calculating logic, it not will cause error accumulation.
3, calculation method is simple, accuracy rate with higher and practical guided significance.
Obviously, above-mentioned implementation example of the invention is only intended to clearly illustrate examples made by the present invention, and is not pair
The restriction of embodiments of the present invention.Intersection identity detection device of the invention can also be electronic license plate, micro- in addition to bayonet
Wave detection, geomagnetism detecting, group, charge station card, video monitoring etc..Above-mentioned intersection identity detection device can achieve similar
Technical effect.For those of ordinary skill in the art, other differences can also be made on the basis of the above description
The variation or variation of form.There is no necessity and possibility to exhaust all the enbodiments.It is all in spirit and original of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the scope of protection of the claims of the present invention within then.
Claims (3)
1. a kind of semaphore clock check method based on intersection identity detection data, specific implementation, comprising the following steps:
S1: obtaining intersection identity detection data and semaphore lamp state records data, including under same intersection, same phase
Intersection identity detection data and semaphore lamp state record data, and the two passes through static table " intersection identity detection-semaphore-
The related information of intersection related information table " acquisition equipment and intersection position；
S2: the vehicle group of intersection identity detection data divides；Based on intersection identity detection data, when crossing vehicle of each lane is obtained
Between detection sequence, divide " Che Qun ", and by formula (1) instead release semaphore each lane lamp state record the time, as vehicle
The anti-knot fruit of road grade；
Wherein vehicle group refers on same direction lane, when in intersection, identity detected the vehicle time difference less than preset value T
N vehicle of arbitrary continuation；Wherein, N >=3；
The formula (1) is indicated by following formula:
In formula (1),
Ti S: the green light time started of phase i, wherein i={ 1,2 ..., k }, k are the phase sum of the intersection；
tL: the time is lost in the current starting of vehicle group；
tH: the time headway of each element of vehicle group；
During the green light of phase i, the intersection identity of Che Qunzhong jth vehicle detects detection time；
M: the vehicle number that intersection identity checkout facility detection zone can accommodate；
S3: the anti-phase runing time for pushing away semaphore；The time is recorded based on the S2 lamp state for calculating each lane of same phase, then is obtained
To the phase run it is counter pushing away the time, process are as follows: preferentially the quantity of confidence time headway sequence rank the first, two lane it is anti-
Knot fruit；It is less than setting value T when the anti-knot fruit in the two lanes corresponding time differencethWhen, then it will test time relatively forward anti-
The phase runing time that knot fruit derives as this；
S4: the S3 anti-runing time pushed away of each phase in intersection generated is summarized, obtains being pushed away by intersection identity detection data is counter
Lamp state record the time, the anti-knot fruit and semaphore lamp state are recorded into comparing for data；When intersection, all phases are anti-
The error of knot fruit and semaphore record result is respectively less than given threshold value, then it is assumed that the intersection identity detection of the intersection is set
Standby, semaphore, data storage device clock are consistent；Otherwise inconsistent.
2. a kind of semaphore clock check method based on intersection identity detection data according to claim 1, special
Sign is, when certain phase is not when having vehicle to pass through stop line in green light latter stage, then the premise known to the phase sequence of letter prosecutor case
Under, the end time for correcting previous phase green light is gone using the green light time started of adjacent phase, thus generates complete reality
The time of running of each phase of signal timing plan, shown in correction formula such as following formula (2):
In formula (2),
The green light end time of phase i-1；
Δti-1: phase i-1 amber light duration, when i value is 1, previous phase refers to the last one phase in a letter control period
Position.
3. a kind of semaphore clock check method based on intersection identity detection data according to claim 1 or 2,
It is characterized in that, the intersection identity detection data includes the warp of intersection identity detection device location information, individual vehicle
Spend moment, vehicle identity information.
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| US3654598A (en) * | 1969-05-20 | 1972-04-04 | Tamar Electronics Ind Inc | Digital cycle system coordinator for traffic control system |
| CN1885367A (en) * | 2006-06-30 | 2006-12-27 | 烟台昌达智能交通设备有限公司 | Traffic signal light control method |
| CN102063796B (en) * | 2010-09-26 | 2013-06-05 | 广西工学院 | Intelligent traffic control system and method based on wireless Mesh ad hoc network |
| JP2012098810A (en) * | 2010-10-29 | 2012-05-24 | Sumitomo Electric Ind Ltd | Traffic signal control apparatus and traffic signal control method |
| CN102081853B (en) * | 2010-12-03 | 2012-08-22 | 合肥工业大学 | Self-adaptive multi-level radio network signal lamp system and control method thereof |
| CN105575138A (en) * | 2016-01-29 | 2016-05-11 | 苏州诚晟信息技术有限公司 | Intelligent traffic light system based on sensor network |
| CN106373411B (en) * | 2016-11-04 | 2018-09-07 | 东南大学 | Optimization method is controlled based on the single point signals for intersecting vehicle record of making a slip of the tongue |
| CN107369327A (en) * | 2017-09-01 | 2017-11-21 | 西安航空学院 | Intersection traffic whistle control system and method based on the buses of RS 485 |
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