Urban congestion charging method and device based on vehicle electron identifying
Technical field
The present invention relates to traffic management technology field, in particular to a kind of urban congestion charge based on vehicle electron identifying
Method and apparatus can be combined into functional module construction by establishing functional module for the method that the invention uses,
Implemented by storing computer program in a computer-readable storage medium.
Background technique
With the development of social economy and communication, many traffic problems such as congested in traffic and traffic accident are more and more convex
Reveal and, at the global problem paid close attention to jointly.It for means is to put into effect to partially often gathering around to this current traffic management department
The user of stifled road collects the policy of traffic congestion expense, it is therefore an objective to the vehicle of urban road peak period is limited using price mechanism
Current density, to alleviate urban traffic congestion, but the theoretical research foundation that traffic congestion is taken in China at this stage is more weak, existing
Traffic congestion expense charging method manually conclude substantially, lack scientific guidance, there is subjective randomness, to cause charge mixed
Disorderly, the confusions such as more receipts are increased income.
Summary of the invention
It is an object of the invention to avoid above-mentioned confusion from generating, and provide a kind of scientific and reasonable based on vehicle electron identifying
Urban congestion charging method and device.
Inventor it has been investigated that, in the case where excluding emergency event, in same lane each day vehicle flowrate trend deposit
In autocorrelation and continuity, that is, the vehicle flowrate trend of the vehicle flowrate trend and more similar time of wanted predicted time phase
It closes, and the vehicle flowrate of other times trend also can move towards correcting action to the vehicle flowrate of the time to be predicted.It invents accordingly
People proposes following technical scheme:
Urban congestion charging method based on vehicle electron identifying is provided, comprising the following steps:
A, for the lane for needing to impose traffic congestion expense, the daily vehicle flowrate in the lane in T days before this is counted, is built
It stands using vehicle flowrate as ordinate, using the time as the vehicle flowrate change curve of abscissa;
B, on vehicle flowrate change curve sampling and respectively to each sample point derivation, then each derivative is averaging again
Value is to obtainF'(An is obtained to the tail point derivation of vehicle flowrate change curve);
C, according to f'(An) the positive and negative anticipation short time in traffic circulation state change direction be towards congestion direction or
Unimpeded direction is developed, according toOrder of magnitude anticipation traffic circulation state variation speed, according to friendship
The change direction and variation speed of logical operating status, increase/reduce the traffic congestion expense that the lane is imposed.
Wherein, described T days no less than 7 days.
Wherein, in f'(An) be greater than zero andAbsolute value be greater than preset threshold when warn.
Also provide the urban congestion charging device based on vehicle electron identifying, comprising: plotting unit needs to levy for being directed to
Receive lane take of traffic congestion, the statistics daily vehicle flowrate in T days interior lanes before this, foundation using vehicle flowrate as ordinate,
Using the time as the vehicle flowrate change curve of abscissa;Derivation device, for the sampling on vehicle flowrate change curve and respectively to each
Then each derivative is averaged to obtain by a sample point derivation againTail point derivation to vehicle flowrate change curve
Obtain f'(An);Device is prejudged, for being court according to the change direction of traffic circulation state in the positive and negative anticipation short time of f'(A n)
Congestion direction or unimpeded direction are developed, according toOrder of magnitude anticipation traffic circulation state variation
Speed, according to the change direction of traffic circulation state and variation speed, increase/reduce the traffic congestion expense that the lane is imposed.
Wherein, described T days no less than 7 days.
Wherein, further include device of warning, in f'(An) be greater than zero andAbsolute value be greater than it is pre-
If warning when threshold values.
The present invention moves towards f'(An by the traffic behavior to most similar time) calculating embody the friendship in the lane in a short time
Logical situation development trend, according toOrder of magnitude anticipation traffic circulation state variation speed, according to
The change direction and variation speed of traffic circulation state, increase/reduce the traffic congestion expense that the lane is imposed, charging method is more
It is scientific and reasonable.
Specific embodiment
In conjunction with preferred embodiment below, the invention will be further described.
Urban congestion charging method based on vehicle electron identifying of the invention, in order to reduce cost, using by console,
The communication system of reader and the electronic mark being loaded on motor vehicle composition, wherein console is set to interior, and reader is set to
It needs to impose to form test point on the lane side of traffic congestion expense, reader is connected by buried bus and controlled
Platform.
When work, outwardly broadcast type sends harmonic wave to the reader on lane side, whenever motor-driven vehicle going passes through reader
When, the electronic mark being loaded on motor vehicle is converted into electric energy after receiving the harmonic wave of reader, and starts electronic mark
In chip sent in such a way that wireless duplex communicates to reader where the motor vehicle license number of motor vehicle, motor vehicle type etc.
Information of vehicles.Reader is by information of vehicles by Bus repeater to console.
Primary plus one are carried out to the accumulative total of the lane flow amount after the information that console receives reader transmission
Operation is to calculate the lane flow amount in a whole day.Console counts the daily vehicle flowrate in the lane in T days before this
Establish vehicle flowrate change curve accordingly afterwards.It is not less than within T days 7 days wherein to guarantee forecasting accuracy.Console changes in vehicle flowrate
On curve after grab sample, derivation is carried out to each sample point of selection respectively, then each derivative obtained is averaged
Value calculates, in the hope ofMeanwhile console calculates the last time also to the tail point derivation of vehicle flowrate change curve
The lane flow amount obtained carries out derivation, in the hope of f'(An);Then, console prejudges k=f'(An) whether it is greater than zero, if
K determines that traffic conditions will be toward unimpeded direction change less than zero;Determine that traffic conditions will not change if k is equal to zero;If k is big
Determine that traffic conditions will be toward congestion direction change in zero.Meanwhile console calculatesAbsolute value h it is big
Small, as k > 0, the h the big, indicates the faster congestion of traffic conditions, and h is smaller, the slower congestion of traffic conditions is indicated, at this point, console
It you can well imagine the collection dynamics that high traffic congestion is taken according to h classification;As k < 0, the h the big, indicates traffic conditions more fast unobstructed, h is smaller
Then indicate that the traffic conditions the slow unobstructed, at this point, be classified according to h Jiang Di the collection dynamics taken of traffic congestion for console.
In the case where k is greater than zero, console compares h and preset threshold in real time, when h is more than preset threshold, passes through dress
Display thereon is loaded in by k and h flashing display with the staff that warns.Console is also by motor vehicle license number, the machine of motor vehicle
The information of vehicles such as motor-car type are stored into the memory being electrically connected therewith, are checked so that staff recalls at any time as needed.
The present invention moves towards f'(An by the traffic behavior to most similar time) calculating embody the friendship in the lane in a short time
Logical situation development trend, according toOrder of magnitude anticipation traffic circulation state variation speed, according to
The change direction and variation speed of traffic circulation state, increase/reduce the traffic congestion expense that the lane is imposed, charging method is more
It is scientific and reasonable.For the method that the invention uses, functional module construction can be combined by establishing functional module, by
Computer program in a computer-readable storage medium is stored to implement.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range.