CN107220920A - A kind of urban track traffic dynamic current limiting method based on Wi Fi signaling datas - Google Patents
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Abstract
The present invention relates to a kind of urban track traffic dynamic current limiting method based on Wi Fi signaling datas, described method comprises the following steps：The real-time passenger flow data of platform based on Wi Fi signalings is obtained；The real-time passenger flow data of platform based on Wi Fi signalings is excavated；Judged whether to meet current-limited startup condition according to real-time passenger flow data, if meeting, formulate current limliting scheme and implement, while real-time release current limliting information, proceeds step S1 if being unsatisfactory for；Judge whether to meet current limliting termination condition, if meeting, terminate this current limliting, if it is not satisfied, then continuing to implement the current limliting scheme in S3；Issue current limliting ending message.Compared with prior art, the present invention, which has the advantages that to excavate based on Wi Fi signaling datas, can obtain passenger's real-time distribution situation at platform more comprehensively, perfect dynamic current limiting program decisions according to, improve the risk of urban track traffic fine-grained management level and reduction large passenger flow.
Description
Technical field
The present invention relates to urban track traffic for passenger flow security management and control technical field, it is related to the real-time signaling datas of Wi-Fi in-orbit
Application in road traffic passenger flow operation tissue, particularly the problem of solving track traffic large passenger flow operation security and efficiency, one kind
Urban track traffic dynamic current limiting method based on Wi-Fi signaling datas.
Background technology
At present, the urban track traffic in the city such as China Shanghai, Beijing comes into the new stage of networking operation, rapidly
The passenger flow demand of growth and the contradiction of limited transport capacity.On the one hand part circuit peak period excess load is shown as
Run, compartment is crowded, the phenomenons such as delay of waiting are on the rise so that the phenomenon such as passenger's overhang-door, car door failure takes place frequently, and then causes
The reliability of network is greatly lowered；On the other hand, due to facilities and equipment disabler and some unpredictable external factor
(accident, weather influence etc.) causes train to occur long-time, large area delay, causes the passenger flow at part station to overstock, gives
Network operation safety belt carrys out serious challenge." risk that large passenger flow is brought " has become the crucial wind in urban track traffic operation
Dangerous point.
Station current limliting (close ticket machine and gate, set railing, close gateway, close transferring passage etc.) is a kind of
Very effective contingency management measure under the conditions of large passenger flow.Passenger safety can be ensured, be prevented effectively from because large passenger flow there may be
It is crowded, trample, passenger is forced down the potential safety hazards such as platform, while again can rationally, effectively balanced each seat coach station unit when
Between enter the station passenger flow and train capacity utilization ratio, the potential of facilities and equipment is played to greatest extent, it is ensured that circuit it is unimpeded and efficient
Operation.
Train operation and passenger's trip process have the features such as complexity, time variation, randomness, therefore current limliting scheme answers root
According to on-site actual situations progress dynamic adjustment in real time, but consideration of the current method in terms of of overall importance and dynamic is obvious not
Foot, it is impossible to realize dynamic current limiting with reference to real-time passenger flow situation.And current limliting time and current limliting station is selected, at present mostly by pipe
The field experience of reason personnel, with certain subjectivity, lacks scientific basis.
The real-time monitoring of bulk flow and flow direction to network passenger flow is the key for formulating reasonable current limliting strategy, current AFC
Although system can obtain the real-time brushing card data out of the station of passenger, due to the diversity and trip process of network trip route
Dynamic, real-time section can not accurately be obtained by AFC brushing card datas, got on or off the bus and transfer passenger flow information, more can not essence
Really obtain the real-time volume of the flow of passengers of train, platform, subway concourse and transferring passage.With the fast development of wireless communication technology, intelligent sliding
The sustainable growth of dynamic terminal, Wi-Fi technology is because having high transfer rate, high stability, high reliability, wireless access and compared with 4G nets
The more low advantage of network cost, the traffic information collection technology based on Wi-Fi signaling datas is just increasingly by each traffic master in city
The attention of pipe portion door.Detection and identification to mobile device, the network area of Wi-Fi access identification mobile phones is 20-100 meters, is led to
The mobile device sent in wake-up packet wake-up coverage is crossed, mobile phone also can detect identification by Wi-Fi under screen lock state and set
It is standby to get address.With the covering of subway Wi-Fi network, real-time passenger flow is monitored using Wi-Fi signaling datas technically
Become feasible.
Wi-Fi is the general designation of IEEE802.11 standards, and Wi-Fi wireless networks are by AP (Access Point) and wireless network
Block the network of composition.Wi-Fi location technologies are handed over by the wireless signal between mobile device and wireless network access point (AP)
Stream determines target location, so as to realize positioning function.Relative to other location technologies, Wi-Fi indoor positioning technologies are in positioning
All there is greater advantage in terms of precision, efficiency and cost.The existing U of granted patent Publication No. CN 204539486 disclose one
Metro Network passenger flow sample follow-up analysis system is planted, the system gathers mobile terminal MAC Address by Wi-Fi sensors,
The statistics of a certain region stream of people quantity is realized, it is seen that Wi-Fi indoor positioning technologies are before field of traffic has a wide range of applications
Scape.But Wi-Fi signaling datas are combined, the application for carrying out urban track traffic dynamic current limiting is also to be studied.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind is based on Wi-Fi letters
Make the urban track traffic dynamic current limiting method of data.Realize and obtain passenger in Rail Transit System according to Wi-Fi location datas
In real-time space status data information, particularly each platform waits number and stay information in real time, is used as rail line
The decision-making foundation of dynamic current limiting.On the basis of track traffic large passenger flow operation security is ensured, to improve urban track traffic
The degree of accuracy of current limliting and efficiency.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of urban track traffic dynamic current limiting method based on Wi-Fi signaling datas, described method includes following step
Suddenly：
The real-time passenger flow data of S1, the platform based on Wi-Fi signalings is obtained；
The real-time passenger flow data of S2, the platform based on Wi-Fi signalings is excavated；
S3, judged whether according to real-time passenger flow data to meet current-limited startup condition, if meeting, formulate current limliting scheme simultaneously real
Apply, while real-time release current limliting information, proceeds step S1 if being unsatisfactory for；
S4, judge whether to meet current limliting termination condition, if meeting, terminate this current limliting, if it is not satisfied, then continuing to implement
Current limliting scheme in S3；
S5, issue current limliting ending message.
Step S1 is specially：The wireless network access point AP pre-set by each station platform is obtained in measurement period
Wi-Fi user's mobile device information is opened, the information is uploaded to location server, determining for passenger in each measurement period is obtained
Position data.
Step S2 is specially：According to the location data of passenger in each continuous measurement period, platform up-downlink direction is calculated
Platform is waited number, platform stranded crowd number and corresponding delay at stop number of times.
Current-limited startup condition is in step S3：
MeetAnd first three including this train
Time train reaches the platform number of waiting collected during the station and showed a rising trend；
Wherein,For train k get to the station n when, be detained the ridership of platform m times, WPk,nGot to the station for train k
Platform during n is waited number, Cn,maxFor platform n maximum safe capacity, α, β is safety coefficient, α, β ∈ [0,1].
Current limliting termination condition is in step S4：
MeetAnd first three including this train
It is on a declining curve that time train reaches the platform collected during the station number of waiting；
Wherein,For train k get to the station n when, be detained the secondary ridership of platform m ', WPk,nCar is reached for train k
Stand n when platform wait number, Cn,maxFor platform n maximum safe capacity, α ', β ' is safety coefficient, α ', β ' ∈ [0,1].
Current limliting scheme is formulated in step S3 is specially：The ridership for allowing access into station is：
Wherein,Station n patronage, WP are allowed access into during for current limlitingk,nFor train k get to the station n when
Platform is waited number.
This method sends current limliting information to the official website of rail transportation operation side, the mobile terminal of user by server
With station PIS terminals.
Compared with prior art, the present invention has advantages below：
(1) real-time dynamic statistical of passenger flow data：The present invention is based on Wi-Fi location technologies, can determine that each platform is waited and multiplies
Visitor's goes out line direction, and can mutually should determine that the platform of up-downlink direction is waited ridership, while can obtain each stayer's number of standing
With corresponding delay number of times, the real-time dynamic statistical of passenger flow data is realized.
(2) perfect dynamic current limiting program decisions foundation：The formulation process of dynamic current limiting scheme, with real-time passenger flow data
For foundation, obtained by quantitative calculating, realize the dynamic bind of current limliting scheme and real-time passenger flow, scheme is forward-looking and dynamic
State real-time.
(3) urban track traffic fine-grained management level is improved, the risk of large passenger flow is reduced：Track proposed by the present invention
Traffic dynamic current limliting solution formulation flow can as track traffic current limliting foundation.
Brief description of the drawings
Fig. 1 is a kind of urban track traffic dynamic current limiting method flow diagram based on Wi-Fi signaling datas of the invention；
Fig. 2 obtains schematic diagram for the real-time passenger flow data of platform based on Wi-Fi signalings；
Fig. 3 is urban track traffic S circuits route map of train (7:40-7:58)；
Fig. 4 is current limliting next stop platform n Trip distributions figure (7:44)；
Fig. 5 is platform n Trip distributions figure (7 after current limliting:52).
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is a part of embodiment of the present invention, rather than whole embodiments.Based on this hair
Embodiment in bright, the every other reality that those of ordinary skill in the art are obtained on the premise of creative work is not made
Example is applied, should all belong to the scope of protection of the invention.
Urban track traffic dynamic current limiting method of the present invention based on Wi-Fi signaling datas, solution bag
The step of including following order, as shown in Figure 1：
S1, the real-time passenger flow data based on Wi-Fi signalings are obtained.Wireless network access point (AP) is laid in platform different
Position, as shown in Fig. 2 obtaining the user's mobile device information for opening Wi-Fi, the data is uploaded to the location-based service on backstage
Device, location server combines the geographical position of each AP in the signal strength fed back and offline database, obtains user's location data,
AP, MAC Address, signal intensity and corresponding SSID that data in scan list mainly have sweep time, scanned.
The real-time passenger flow data of S2, the platform based on Wi-Fi signalings is excavated.Based on Wi-Fi signaling datas, each station station is excavated
Platform up-downlink direction is waited number, platform stranded crowd number and corresponding delay at stop number of times.
S3, the solution formulation of track traffic dynamic current limiting are simultaneously implemented.Formulate track traffic dynamic current limiting and start and terminate decision-making
Foundation, determines track traffic current limliting scheme, including current limliting station, current limliting period and current limliting intensity.
S4, track traffic current limliting information real-time release.Issue terminal includes the official website of rail transportation operation side, user
Mobile terminal and station PIS terminals, issue content be real-time track traffic current limliting scheme, during comprising current limliting station, current limliting
Section, current limliting intensity and the real-time passenger flow diagram of rail traffic platform.
The real-time passenger flow data of platform based on Wi-Fi signalings in step S2 is excavated.Based on the initial data of Wi-Fi signalings,
Using AP points position as base unit, based on specific matched rule, by AP points position and subway concourse, the corresponding relation of platform, calculate
The stranded crowd number and number of times of the real-time passenger flow quantity, especially platform in platform region.
An island platform aggregation number includes the number of waiting of up and descending both direction.Up-downlink direction passenger's sentences
Fixed, according to the AP focuses for being arranged on platform diverse location, the MAC Address intensity collected is determined.Side platform aggregation number is pressed
Up, descending separated statistics.Hereafter by taking the excavation of up direction Wi-Fi signaling datas as an example, the Wi-Fi signaling datas of down direction
Method for digging is identical with up direction.
When each train reaches each station described in step S2, the wait computational methods of number of platform up direction are：
In formula (1), WPk,nFor train k get to the station n when platform wait number (people),Get to the station n's for train k
Moment,To be existed by the AP focuses set on platform nPassenger (the MAC that what the moment obtained be positioned on platform n
Location) set,For setElement number (people).
When each train reaches each station described in step S2, the computational methods of platform up direction stranded crowd number are：
In formula (2), HPk,nGot to the station for train k n when platform up direction stranded crowd number (people),For setWithShared element number (people).WithTo pass through platform n
The AP focuses of upper setting existMoment andUp direction passenger (the MAC that what the moment obtained be positioned on platform n
Location) set.
Station current-limited startup decision-making described in step S3 is：It is more than or equal to platform when being detained ridership of the number of times more than m times
At α times of maximum capacity, with reference in MAC information bank history passenger flow datas, first three time train reaches the platform collected during the station
Wait number, if the number of waiting shows a rising trend, and wait number of this train when reaching n stations is held more than or equal to platform maximum
β times of amount, then start dynamic current limiting measure at the station, and the current-limited startup moment is designated as tcb,n, current-limited startup condition is designated as：
In formula (3),For train k get to the station n when, be detained the ridership (people) of platform m times, WPk,nArrived for train k
Waited number (people), C up to the platform during n of stationN,MAxFor platform n maximum safe capacity (people), α, β is safety coefficient, α, β ∈
[0,1]。
Before the n current limlitings of station, the passengers quantity computational methods that delay platform is m times are：
In formula (4),For train k before the current limliting of station get to the station n when, be detained the ridership (people) of platform m times,WithRespectively existed by the AP focuses set on platform nMoment,Moment andThe up direction passenger (MAC Address) being positioned on platform n that moment obtains gathers.
Step S3 middle orbits traffic dynamic current limliting solution formulation is simultaneously implemented, including：Current limliting moment, current limliting station and current limliting are strong
Spend (ridership for allowing access into station).
The station current-limited startup moment is described in step S3：Work as satisfaction When, n starts current limliting AT STATION, is designated as tcb,n。
T during the current limliting of station described in step S3C, n, it is allowed to the ridership for entering station determines that method is：
In formula (5),T during for current limlitingc,nAllow access into station n patronage (people), WPk,nReached for train k
The platform during n of station is waited number (people).
Correspondingly, the passenger's clearance speed that enters the station is：
In formula (6),Passenger's clearance speed that entered the station during for current limliting (people/min), tc,nBe limited flow/time length.This is put
Scanning frequency rate is counted, and can be used as passenger's clearance speed reference value during later similar situation.
Station current limliting described in step S3 terminates decision-making and is：It is less than or equal to platform when being detained the number of times ridership secondary more than m '
At α ' times of maximum capacity, the platform collected when reaching the station with reference to first three in MAC information bank history passenger flow datas time train
Wait number, if number of waiting is on a declining curve, and wait number of this train when reaching n stations is held less than or equal to platform maximum
The β ' of amount times, then terminate dynamic current limiting measure at the station, current limliting finish time is designated as tCs, n.Current limliting termination condition is designated as：
In formula (7),For train k get to the station n when, be detained the secondary ridership (people) of platform m ', WPk,nFor train k
Get to the station n when platform wait number (people), Cn,maxFor platform n maximum safe capacity, α ', β ' is safety coefficient, α ', β '
∈[0,1]。
After the n current limlitings of station, being detained the secondary passengers quantity computational methods of platform m ' is：
In formula (8),For train k after the current limliting of station get to the station n when, be detained the secondary ridership (people) of platform m ',WithRespectively existed by the AP focuses set on platform nMoment,Moment and
The up direction passenger (MAC Address) being positioned on platform n that moment obtains gathers.
The mobile terminal of user described in S4, which should be near the current limliting website according to Wi-Fi data acquisitions, the purpose of entering the station
Passenger.Corresponding AP is set in subway entrance in the present invention, for receiving subway portal users mobile device information.
Embodiment
Urban track traffic S circuit route maps of train, are shown in Fig. 3, and abscissa is the moment, and ordinate is distance, adjacent column
The car departure interval is 120s, and train is sailed out of after stopping setting time at each station.
This example research up direction station n dynamic current limiting scheme, n is side platform, and each parameter is respectively set to：
Cn,max=1840 (people), m=3, m '=1, α=0.2, α '=0.4, β=0.8, β '=0.8, departure interval h=120s.More than
Parameter value is set all in accordance with station actual conditions and historical statistical data.
1. based on Wi-Fi signaling datas, excavate train k get to the station n when, up direction platform is waited ridership
WPK, n, the ridership that delay at stop is 3 times
Now
It is correspondingThat is WPk,n=1608 (people).
2. station n current-limited startup decision-makings：
(1) it is detained α times that whether ridership of the number of times more than 3 times is more than or equal to platform n maximum capacities：379 ＞ 0.2 ×
1840=368, meets.
(2) time train of first three in MAC information banks historical data reaches the platform collected during the station and waited number：
It is now corresponding
Now
It is corresponding
It is now corresponding
It was found that when three trains reach n stations, the platform number of waiting shows a rising trend.
(3) whether platform n number of waiting is more than or equal to β times of platform maximum capacity：1608 0.8 × 1840=of ＞
1472, meet current-limited startup condition
3. current limliting solution formulation is simultaneously implemented
Moment starts current limliting scheme, in this example tCb, nFor 7:46.T during the current limliting of stationc,n, it is allowed to enter station
Ridership determine that method is：
4. station n current limlitings termination condition judges.
It is detained 0.4 times that whether ridership of the number of times more than 1 time is less than or equal to platform n maximum capacities：
Based on Wi-Fi signaling datas, excavate after the n current limlitings of station ,+1 train of kth get to the station n when, up direction station
Platform is waited ridership WPK+1, n, the ridership that delay at stop is 1 time
It is now correspondingI.e.
It is unsatisfactory for limit
Termination condition is flowed, then continues executing with current limliting.
Continue to excavate after the n current limlitings of station ,+2 trains of kth get to the station n when, up direction platform is waited ridership,
The ridership that delay at stop is 1 time
It is now correspondingI.e.
Current limliting termination condition is unsatisfactory for, then continues executing with current limliting.
Continue to excavate after the n current limlitings of station ,+3 trains of kth get to the station n when, up direction platform is waited ridership,
The ridership that delay at stop is 1 time
It is now correspondingI.e.
MAC information
It is on a declining curve that first three in the historical data of storehouse time train k, k+1, k+2 reach the platform collected during the station number of waiting, and
WPK+3, n=1,424 0.8 × 1840=1472 of ＜, meet current limliting termination condition.Moment terminates current limliting scheme, in this example
Middle tcs,nFor 7:52.This current limliting continues 6 minutes, and the passenger's clearance speed that entered the station during current limliting is：
The clearance speed is counted, and is used as passenger's clearance speed reference value during later similar situation.
5. the dynamic current limiting scheme shown in output table 1 is excavated based on Wi-Fi signaling datas：
The dynamic current limiting scheme of table 1
This current limliting period tc,nFor 7:46-7:52, it is allowed to which enter the station numberFor 232 people, current limiting measures are：Close into
Exit B, at ENTRANCE A set railing, by passenger enter the station speed slow down for：
By the real-time current limliting information in table 1 and the real-time Trip distribution figure of rail traffic platform, pass through subway official website, PIS ends
The medium such as end and wechat, is timely transmitted to track traffic passenger, to guide passenger to go on a journey.Rail traffic platform real-time passenger flow point
Butut is as shown in Figure 4, Figure 5.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, various equivalent modifications can be readily occurred in or replaced
Change, these modifications or substitutions should be all included within the scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection domain be defined.
Claims (7)
1. a kind of urban track traffic dynamic current limiting method based on Wi-Fi signaling datas, it is characterised in that described method bag
Include following steps：
The real-time passenger flow data of S1, the platform based on Wi-Fi signalings is obtained；
The real-time passenger flow data of S2, the platform based on Wi-Fi signalings is excavated；
S3, judged whether according to real-time passenger flow data to meet current-limited startup condition, if meeting, formulate current limliting scheme and simultaneously implement,
Real-time release current limliting information, proceeds step S1 if being unsatisfactory for simultaneously；
S4, judge whether to meet current limliting termination condition, if meeting, terminate this current limliting, if it is not satisfied, then continuing to implement in S3
Current limliting scheme；
S5, issue current limliting ending message.
2. a kind of urban track traffic dynamic current limiting method based on Wi-Fi signaling datas according to claim 1, it is special
Levy and be, step S1 is specially：The wireless network access point AP pre-set by each station platform is obtained in measurement period
Wi-Fi user's mobile device information is opened, the information is uploaded to location server, determining for passenger in each measurement period is obtained
Position data.
3. a kind of urban track traffic dynamic current limiting method based on Wi-Fi signaling datas according to claim 2, it is special
Levy and be, step S2 is specially：According to the location data of passenger in each continuous measurement period, the station of platform up-downlink direction is calculated
Platform is waited number, platform stranded crowd number and corresponding delay at stop number of times.
4. a kind of urban track traffic dynamic current limiting method based on Wi-Fi signaling datas according to claim 3, it is special
Levy and be,
Current-limited startup condition is in step S3：
MeetAnd first three including this train time train
The platform number of waiting collected during the station is reached to show a rising trend；
Wherein,For train k get to the station n when, be detained the ridership of platform m times, WPk,nFor train k get to the station n when
Platform is waited number, Cn,maxFor platform n maximum safe capacity, α, β is safety coefficient, α, β ∈ [0,1].
5. a kind of urban track traffic dynamic current limiting method based on Wi-Fi signaling datas according to claim 3, it is special
Levy and be,
Current limliting termination condition is in step S4：
MeetAnd first three including this train time row
It is on a declining curve that car reaches the platform collected during the station number of waiting；
Wherein,For train k get to the station n when, be detained the secondary ridership of platform m ', WPk,nFor train k get to the station n when
Platform wait number, Cn,xaxFor platform n maximum safe capacity, α ', β ' is safety coefficient, α ', β ' ∈ [0,1].
6. a kind of urban track traffic dynamic current limiting method based on Wi-Fi signaling datas according to claim 1, it is special
Levy and be, current limliting scheme is formulated in step S3 is specially：The ridership for allowing access into station is：
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Wherein,Station n patronage, WP are allowed access into during for current limlitingk,nGot to the station for train k n when platform wait
Car number.
7. a kind of urban track traffic dynamic current limiting method based on Wi-Fi signaling datas according to claim 1, it is special
Levy and be, this method sends current limliting information to the official website of rail transportation operation side, the mobile terminal of user by server
With station PIS terminals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710290875.3A CN107220920B (en) | 2017-04-28 | 2017-04-28 | Wi-Fi signaling data-based dynamic current limiting method for urban rail transit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710290875.3A CN107220920B (en) | 2017-04-28 | 2017-04-28 | Wi-Fi signaling data-based dynamic current limiting method for urban rail transit |
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| CN109695215A (en) * | 2018-12-29 | 2019-04-30 | 大连交通大学 | Safety check automatic current limiting system and current-limiting method |
| CN109711523A (en) * | 2019-01-30 | 2019-05-03 | 成都智元汇信息技术股份有限公司 | A kind of metro passenger flow information real-time publishing system and method based on APP client |
| CN109741596A (en) * | 2018-11-28 | 2019-05-10 | 交控科技股份有限公司 | A kind of real-time passenger flow monitoring system of rail traffic based on probe and method |
| CN110659549A (en) * | 2018-06-29 | 2020-01-07 | 华为技术有限公司 | Method and device for notifying congestion degree of train |
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| CN110659549A (en) * | 2018-06-29 | 2020-01-07 | 华为技术有限公司 | Method and device for notifying congestion degree of train |
| CN109741596A (en) * | 2018-11-28 | 2019-05-10 | 交控科技股份有限公司 | A kind of real-time passenger flow monitoring system of rail traffic based on probe and method |
| CN109695215A (en) * | 2018-12-29 | 2019-04-30 | 大连交通大学 | Safety check automatic current limiting system and current-limiting method |
| CN109711523A (en) * | 2019-01-30 | 2019-05-03 | 成都智元汇信息技术股份有限公司 | A kind of metro passenger flow information real-time publishing system and method based on APP client |
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| CN107220920B (en) | 2020-08-18 |
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