CN107085972B - A kind of calculation method and device of parking position number - Google Patents
A kind of calculation method and device of parking position number Download PDFInfo
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- CN107085972B CN107085972B CN201710459571.5A CN201710459571A CN107085972B CN 107085972 B CN107085972 B CN 107085972B CN 201710459571 A CN201710459571 A CN 201710459571A CN 107085972 B CN107085972 B CN 107085972B
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Abstract
The invention discloses the calculation methods and device of a kind of parking position number, this method comprises: obtaining the parklog file of the record vehicle parking information in parking lot in a measurement period；Data cleansing processing is carried out to parklog file；According to data cleansing treated parklog file, judge whether parking lot has the exclusive parking stall parked for designated vehicle and the exclusive parking stall number when there is exclusive parking stall；According to the vehicle number or according to vehicle number and the exclusive parking stall number of marching into the arena of marching into the arena of parklog file instruction, calculate the quasi- parking stall number in a parking lot measurement period Nei, the quasi- parking stall number in the parking lot in more each measurement period, using the maximum value of quasi- parking stall number as the parking stall number in the calculated parking lot.The technical solution of the embodiment of the present invention can accurately estimate the practical parking stall number in parking lot, meet the regulatory requirement in parking lot, user is facilitated to stop, optimize user experience, improve the service level in parking lot.
Description
Technical field
The present invention relates to managing system of car parking technical fields, and in particular to a kind of calculation method of parking position number and
Device.
Background technique
Since (such as irregular parking, long to rent exclusive parking stall, rubbish etc. occupies for parking lot management and other various factors
Parking stall), the planning parking stall inconsistent situation of number for causing the actually available parking stall number in parking lot to record with parking lot management side is more next
It is more, it is unable to satisfy the regulatory requirement in parking lot, also affects the experience of parking user.
Summary of the invention
The present invention provides the calculation methods and device of a kind of parking position number, can accurately calculate the reality in parking lot
Border can use parking stall number, meet the regulatory requirement in parking lot, improve the service ability in parking lot, improve user experience.
According to an aspect of the invention, there is provided a kind of calculation method of parking position number, this method comprises:
Obtain the parklog file of the record vehicle parking information in parking lot in a measurement period；
Data cleansing processing is carried out to the parklog file；
According to data cleansing treated parklog file, judges whether the parking lot has and parked for designated vehicle
Exclusive parking stall and the exclusive parking stall number when there is exclusive parking stall；
According to the vehicle number or according to the vehicle number and described exclusive of marching into the arena of marching into the arena of parklog file instruction
Parking stall number calculates the quasi- parking stall number in a parking lot measurement period Nei,
The quasi- parking stall number in the parking lot in more each measurement period is somebody's turn to do using the maximum value of quasi- parking stall number as calculated
The parking stall number in parking lot.
Optionally, carrying out data cleansing processing to the parklog file includes:
Filtering out does not have the record of license board information in parklog file,
For remaining record, judge each record whether only march into the arena information and without information of leaving the theatre,
It is then, the vehicle of the record instruction to be determined according to the time of marching into the arena in default parking duration and the information of marching into the arena
Leaving time, and leave the theatre information for record supplement；
Wherein, the default parking duration is the duration or according to institute of averagely being stopped according to all vehicles in parking lot N days
Time of the marching into the arena identical first M days average parking durations stated in the information of marching into the arena of record determine.
Optionally, carrying out data cleansing processing to the parklog file includes:
It is according to the parking duration respectively recorded in the parklog file, the parking duration respectively recorded is pre- with one
If threshold value is compared,
If it is greater than or equal to the preset threshold, then retain the record,
The record is then filtered out if it is less than the preset threshold；
Wherein, the preset threshold is the parking duration calculation of all vehicles in a measurement period according to the parking lot
After variance and standard deviation, determined by the standard deviation of three times.
Optionally, according to data cleansing treated parklog file, judge whether the parking lot has for specified vehicle
The exclusive parking stall parked and the exclusive parking stall number when there is exclusive parking stall include:
According to the information for the correspondence predetermined characteristic recorded in data cleansing treated parklog file, extraction is stopped
It is each in vehicle journal file to record corresponding feature vector, this feature vector input classifier trained in advance is classified,
Classification results are obtained, determine whether parking lot has the exclusive parking stall parked for designated vehicle according to classification results.
Optionally, according to the vehicle number or according to vehicle number and the institute of marching into the arena of marching into the arena of parklog file instruction
Exclusive parking stall number is stated, the quasi- parking stall number for calculating a parking lot measurement period Nei includes:
Obtain corresponding vehicle number of marching into the arena of multiple time points in a measurement period, by it is described march into the arena vehicle number and it is described solely
Parking stall number is accounted for be added to obtain the time point corresponding first parking stall number,
Compare the corresponding first parking stall number of each time point in a measurement period, using the first parking stall number maximum value as the system
Count the quasi- parking stall number in parking lot in the period.
According to another aspect of the present invention, a kind of computing device of parking position number is provided, which includes:
Log acquisition module, the parklog of the record vehicle parking information for obtaining parking lot in a measurement period
File；
Data cleansing module, for carrying out data cleansing processing to the parklog file；
Judgment module, for judging whether the parking lot has confession according to data cleansing treated parklog file
The exclusive parking stall that designated vehicle is parked and the exclusive parking stall number when there is exclusive parking stall；
Computing module, the vehicle number or according to the vehicle number of marching into the arena of marching into the arena for being indicated according to the parklog file
And the exclusive parking stall number, the quasi- parking stall number in a parking lot measurement period Nei is calculated, it should in more each measurement period
The quasi- parking stall number in parking lot, using the maximum value of quasi- parking stall number as the parking stall number in the calculated parking lot.
Optionally, the data cleansing module does not have the note of license board information specifically for filtering out in parklog file
Record judge whether each record only marches into the arena information and nothing is left the theatre information, is then, when according to default parking for remaining record
Time of marching into the arena in the long and described information of marching into the arena determines the leaving time of the vehicle of the record instruction, and supplements for the record
It leaves the theatre information；
Wherein, the default parking duration is the duration or according to institute of averagely being stopped according to all vehicles in parking lot N days
Time of the marching into the arena identical first M days average parking durations stated in the information of marching into the arena of record determine.
Optionally, the data cleansing module, when specifically for according to the parking respectively recorded in the parklog file
It is long, the parking duration respectively recorded is compared with a preset threshold, if it is greater than or equal to the preset threshold,
Then retain the record, then filters out the record if it is less than the preset threshold；
Wherein, the preset threshold is the parking duration calculation of all vehicles in a measurement period according to the parking lot
After variance and standard deviation, determined by the standard deviation of three times.
Optionally, the judgment module, specifically for according to recording in data cleansing treated parklog file
The information of corresponding predetermined characteristic, extraction obtain it is each in parklog file record corresponding feature vector, by this feature vector
Input classifier trained in advance is classified, and classification results are obtained, and determines whether parking lot has for specified according to classification results
The exclusive parking stall of vehicle parking.
Optionally, the computing module, specifically for obtaining corresponding vehicle of marching into the arena of multiple time points in a measurement period
Number, is added the vehicle number of marching into the arena to obtain the time point corresponding first parking stall number with the exclusive parking stall number, compares one
Each time point corresponding first parking stall number in a measurement period, using the first parking stall number maximum value as parking lot in the measurement period
Quasi- parking stall number.
The beneficial effects of the present invention are: the calculation method and device of the parking position number of the embodiment of the present invention pass through acquisition
The parklog file in parking lot in one measurement period carries out data cleansing processing to log, whether judges the parking lot
Exclusive parking stall and the exclusive parking stall number when there is exclusive parking stall, calculate the quasi- parking stall number in a parking lot measurement period Nei,
The finally quasi- parking stall number in the interior parking lot of more each measurement period, using the maximum value of quasi- parking stall number as the calculated parking
The parking stall number of field.In this way, can more accurately calculate parking by being analyzed and processed to the vehicle number for entering parking lot
The actually available parking stall number of field, meets the regulatory requirement in parking lot, improves the service ability in parking lot, improve user's body
It tests.
Detailed description of the invention
Fig. 1 is the flow diagram of the calculation method of the parking position number of one embodiment of the invention；
Fig. 2 is the flow diagram of the calculation method of the parking position number of one embodiment of the invention；
Fig. 3 is the structural block diagram of the computing device of the parking position number of one embodiment of the invention.
Specific embodiment
Design concept of the invention is: for actually available parking stall number and parking lot present in existing parking lot management
The available parking stall number of record is inconsistent, and parking lot and car owner user can not learn asking for the actually available parking stall number in parking lot
Topic, in a measurement period, (as daily), estimating for whole parking stall number is done in the log of disengaging parking lot vehicle to the embodiment of the present invention
It calculates, in the case where the specification enough of disengaging field log daily (after having carried out data cleansing processing), the maximum vehicle on the scene of history
Digit approximate can regard the total space number in parking lot as, be parking lot to obtain the actually available parking stall number in the parking lot
Manager carries out parking management and provides reference, meets the demand in parking lot and user of stopping.
In practical application, ask when actually available parking stall number calculates there is also some using the parklog in parking lot
Topic causes some vehicles only to be marched into the arena information for example, parklog is lack of standardization for various reasons, no appearance information, or even sometimes
What is marched into the arena is not necessarily motor vehicle.In addition, renting exclusive parking stall for those length when calculating the parking stall number in parking lot according to vehicle
It needs to consider, because some are that length is hired a car, even if the vehicle does not come, but its parking stall does not allow by other really in the user in parking lot
Motor vehicle occupies, that is, hiring a car to monopolize by these length uses.
For these problems, the embodiment of the invention provides a kind of calculation methods of parking position number, as shown in Figure 1, should
The calculation method of parking position number includes the following steps:
Step S101 obtains the parklog file of the record vehicle parking information in parking lot in a measurement period；
Step S102 carries out data cleansing processing to the parklog file；
Step S103 judges whether the parking lot has for specified according to data cleansing treated parklog file
The exclusive parking stall of vehicle parking and the exclusive parking stall number when there is exclusive parking stall；
Step S104, according to the parklog file instruction march into the arena vehicle number or according to it is described march into the arena vehicle number and
The exclusive parking stall number calculates the quasi- parking stall number in a parking lot measurement period Nei,
Step S105, the quasi- parking stall number in the parking lot in more each measurement period, using the maximum value of quasi- parking stall number as
The parking stall number in the calculated parking lot.
As shown in Figure 1 it is found that the calculation method of the parking position number of the present embodiment, obtains the parking day in parking lot first
Will, aiming at the problem that parklog influence calculated result lack of standardization, the method for the present embodiment carries out data cleansing to parklog
Processing handles in data cleansing and then carries out the judgement that parking stall number is monopolized in parking lot according to parklog, according to parklog
And the result of exclusive parking stall number calculates the actually available parking stall number in parking lot, to ensure that the accurate of calculated data
Property, the regulatory requirement in parking lot is also met, service ability is improved in parking assisting field, improves user experience.
Fig. 2 is the flow diagram of the calculation method of the parking position number of one embodiment of the invention, below with reference to Fig. 2
More specific description is carried out to the realization step of the calculation method of the parking position of the present embodiment.
Referring to fig. 2, process starts to first carry out step S201.
Step S201 obtains original log；
Here original log is obtained from parking lot end, and instruction enters and leaves the basic letter of the vehicle in the parking lot
The parklog file of breath.In one embodiment, information (such as the parking lot in parking lot is specifically saved in parklog file
Title or number), the following essential information of each vehicle into parking lot: license board information, information of marching into the arena, information of leaving the theatre
It whether is the long information hired a car.Here length is hired a car the vehicle for referring to that long-term lease parking stall contract has been signed in those and parking lot
?.
Step S202 leaves the theatre data to the record polishing in log；
In practical application, cause for various reasons obtain original log in always have it is some record it is lack of standardization, for
These nonstandard records need to carry out data cleansing, to guarantee the accuracy of follow-up data processing, reduce computation complexity.
Specifically, first determining whether in parklog file in the present embodiment with the presence or absence of the note without recording license board information
Record, if so, then filtering out those does not have the record of license board information.Since license plate is unique mark into the vehicle in parking lot
Know, be most likely not motor vehicle if without license plate, parking stall will not be occupied, and then cannot stop using these records to calculate
The parking stall number in parking lot.
For remaining record (that is, those have the record of license board information), judge each record whether only march into the arena information and
Without leaving the theatre information,
It is then, leaving the theatre for the vehicle of record instruction to be determined according to the time of marching into the arena in default parking duration and information of marching into the arena
Time, and information of leaving the theatre is supplemented for the record；Wherein, presetting parking duration is averaged according to all vehicles in parking lot N days
Duration of stopping is determined according to time of marching into the arena identical first M days average parking durations in the information of marching into the arena of the record.
That is, those are lacked with the record of the vehicle of marching into the arena for information of leaving the theatre, information of leaving the theatre is required supplementation with.This implementation
Example provides two kinds of polishings and leaves the theatre the mode of information, and a kind of mode is to determine to stop with the average down time in the parking lot in N days
Then vehicle duration supplements information of leaving the theatre according to parking duration and time of marching into the arena for record.Such as N=1, then according to the parking
That records in a record in journal file marches into the arena the time, calculates the average down time in the same day parking lot.For example, this stops
50 vehicle disengaging are shared on the day of parking lot, the down time (e.g., 2 hours) of each car in this 50 vehicles is added can obtain divided by 50
To the same day parking lot average down time (such as 2 hours) if, according to default parking duration (2 hours) and march into the arena the time
(such as 10 points of morning) is that record supplement leaves the theatre information (leaving time: 12 noon).
Another way is: the vehicle marched into the arena with M days (7 days or 10 days) same time of the parking lot history or same period
Average down time, as default parking duration.For example, having a note in the parklog file in the June 1 obtained
Record, information of only marching into the arena (wherein having recorded at 10 points in morning time of marching into the arena) then, according at 10 points in continuous 7 day morning before June 1 into
Enter the leaving time of the vehicle of Parking, average down time is calculated, by obtained average down time (such as 1.5 hours)
As default parking duration, then basis is default stops duration (1.5 hours) and marches into the arena the time (such as 10 points of morning) as record
Supplement leaves the theatre information (leaving time: 11 thirty of noon).
In the present embodiment, why for lack information of leaving the theatre record supplement comprising leaving time information of leaving the theatre be for
, it is subsequent it is accurate calculate a measurement period in sometime on, the number of vehicles on the scene in parking lot, so based on
Field number of vehicles calculates the parking stall number in parking lot.
Step S203, filtering are unsatisfactory for the record of parking duration；
In practical application, it is contemplated that too short down time may be only to enter parking lot to find parking stall and do not exist finally
The Parking, that is, be not take up parking stall, then needs for the corresponding record of such case to be filtered, to guarantee calculated result
Accuracy.
Theoretically, meet normal distribution into the down time of the vehicle in parking lot, it therefore, can be by calculating parking lot
Vehicle down time mean value and variance obtain preset threshold, specially treated is then done to exceptional value according to preset threshold.
Specifically, according to the parking duration respectively recorded in parklog file, the parking duration of each record is pre- with one
If threshold value is compared, if it is greater than or be equal to the preset threshold, then retain the record, if it is less than preset threshold then mistake
Filter the record；Wherein, preset threshold is the parking duration calculation of all vehicles in a measurement period according to the parking lot
After variance and standard deviation, determined by the standard deviation of three times.That is, sample standard deviation of the confidence interval 95%, other than the confidence interval
It may filter that.
Step S204 judges that long rent monopolizes parking stall number；
Front has been described, and calculates the actually available parking stall number in parking lot in the vehicle number by entering parking lot, needs
The long of parking lot is rented by exclusive situation judges, in a kind of situation, when judge a parking lot there is no it is long rent it is exclusive
When parking stall, then the parking stall number in the parking lot is the maximum vehicle number being equal into the Parking.In another case, when sentencing
It is disconnected go out a parking lot there is long when renting exclusive parking stall, the further long number for renting exclusive parking stall number of judgement, such as 10 or 50
It is a etc..Then the parking stall number in the parking lot monopolizes parking stall number according to the maximum vehicle number for entering the Parking and long rent
Number is comprehensive to be determined.
Judge whether the length in parking lot position of hiring a car is that exclusive use belongs to weak typing problem, according to number in the present embodiment
According to the information for the correspondence predetermined characteristic recorded in cleaned parklog file, extraction obtains every in parklog file
It is a to record corresponding feature vector, this feature vector input classifier trained in advance is classified, classification results, root are obtained
Determine whether parking lot has the exclusive parking stall parked for designated vehicle and the exclusive vehicle when there is exclusive parking stall according to classification results
Digit.
Here classifier can be trained by boosting algorithm, but not limited to this, GBDT can also be used
(Gradient Boosting Decision Tree, gradient promote decision tree) or Adaboost iterative algorithm etc..
According to the information for the correspondence predetermined characteristic recorded in data cleansing treated parklog file, here predetermined
Feature is, for example, the exclusive parking stall of long rent of long hire a car a number and the preservation of parking lot management side (as daily) in a measurement period
Number between difference, or the variation number etc. of retention of hiring a car long daily.
Step S205 calculates history maximum parking number；
Exclusive parking stall number is rented without long obtaining a parking lot, and long rent when there is length to rent exclusive parking stall number monopolizes vehicle
History maximum parking number is calculated after digit, in this step.
The parking position number of each measurement period (for example, daily) is calculated first, specifically, obtaining a system
Corresponding vehicle number of marching into the arena of multiple time points in the period is counted, the vehicle number that will march into the arena is added to obtain the time point pair with exclusive parking stall number
The the first parking stall number answered compares the corresponding first parking stall number of each time point in a measurement period, by the first parking stall number maximum value
Quasi- parking stall number as parking lot in the measurement period.
That is, the vehicle number on the scene within one day is repeatedly judged and is calculated, for example, being counted every one minute
Calculate a current time vehicle number on the scene, for example, 10 points calculating vehicle numbers on the scene be 50,10 points 01 minute, calculate vehicle on the scene
Number is 70,10 points 02 minute, calculating vehicle number on the scene is 65, then by vehicle number on the scene and the calculated parking lot
It is long to rent exclusive parking stall number (such as 20) addition, the first parking stall of parking lot number at each moment is obtained, each first parking stall number is compared
After be maximized, the quasi- parking stall number in the measurement period of one, the parking lot can be obtained.
It is maximized after quasi- parking stall in each measurement period is compared, then the history in the parking lot is calculated most
Big parking number, saves the history maximum in the parking lot being calculated parking number as the actually available parking stall number in the parking lot
Get off, is referred to for follow-up decision.
In practical application, the different calculating frequencys can be specifically chosen according to required precision can if required precision is high
The higher of frequency setting will be calculated, if required precision is low, the lower of frequency setting can will be calculated, can be improved in this way
Calculating speed and efficiency.
In addition, MapReduce calculation can be used in when specific implementation since the data volume that the method for the present embodiment is handled is very big
The processing such as method or Spark algorithm.MapReduce is mainly used for the high performance parallel operation of large-scale dataset.Current reality
It is now to specify Map (mapping) function, for one group of key-value pair is mapped to one group of new key-value pair, specifies concurrently
Reduce (reduction) function, for guaranteeing that each of the key-value pair of all mappings shares identical key group.Spark is to aim at
Large-scale data processing and design Universal-purpose quick computing engines, Spark have faster speed, ease for use, versatility with
And the characteristics of supporting multiple resources manager.
So far, process terminates.
It was proved that using the calculated total space number of calculation method of the parking position number of the embodiment of the present invention
Accuracy rate reach 90% or more, much larger than 30% or so accuracy rate of the prior art.So that the embodiment of the present invention
Technical solution can satisfy the regulatory requirement in parking lot, also facilitate car owner user according to the actually available parking stall in parking lot
It stops, optimizes user experience, improve the service level in parking lot.
Fig. 3 is the structural block diagram of the computing device of the parking position number of one embodiment of the invention, referring to Fig. 3, this reality
Apply the computing device 30 of the parking position number of example, comprising:
Log acquisition module 301, the parking of the record vehicle parking information for obtaining parking lot in a measurement period
Journal file；
Data cleansing module 302, for carrying out data cleansing processing to the parklog file；
Judgment module 303, for judging whether the parking lot has according to data cleansing treated parklog file
The exclusive parking stall parked for designated vehicle and the exclusive parking stall number when there is exclusive parking stall；
Computing module 304, the vehicle number or according to the vehicle of marching into the arena of marching into the arena for being indicated according to the parklog file
The several and described exclusive parking stall number, calculates the quasi- parking stall number in a parking lot measurement period Nei, more each measurement period
The quasi- parking stall number in the interior parking lot, using the maximum value of quasi- parking stall number as the parking stall number in the calculated parking lot.
In one embodiment, data cleansing module 302 does not have license board information specifically for filtering out in parklog file
Record whether each record, which only marches into the arena information without information of leaving the theatre, is judged for remaining record, be then, to be stopped according to default
Time of marching into the arena in vehicle duration and the information of marching into the arena determines the leaving time of the vehicle of the record instruction, and is the record
Supplement information of leaving the theatre；
Wherein, the default parking duration is the duration or according to institute of averagely being stopped according to all vehicles in parking lot N days
Time of the marching into the arena identical first M days average parking durations stated in the information of marching into the arena of record determine.
In one embodiment, data cleansing module 302, specifically for being stopped according to what is respectively recorded in the parklog file
The parking duration respectively recorded is compared by vehicle duration with a preset threshold, if it is greater than or be equal to described default
Threshold value then retains the record, then filters out the record if it is less than the preset threshold；
Wherein, the preset threshold is the parking duration calculation of all vehicles in a measurement period according to the parking lot
After variance and standard deviation, determined by the standard deviation of three times.
In one embodiment, judgment module 303, specifically for remembering according in data cleansing treated parklog file
The information of the correspondence predetermined characteristic of load, extraction obtain it is each in parklog file record corresponding feature vector, by this feature
Vector input classifier trained in advance is classified, and is obtained classification results, is determined whether parking lot has confession according to classification results
The exclusive parking stall that designated vehicle is parked.
In one embodiment, computing module 304, be specifically used for obtain a measurement period in multiple time points it is corresponding into
Field vehicle number, is added the vehicle number of marching into the arena to obtain the time point corresponding first parking stall number with the exclusive parking stall number, than
The first parking stall number corresponding compared with time point each in a measurement period, using the first parking stall number maximum value as stopping in the measurement period
The quasi- parking stall number in parking lot.
For device embodiment, since it corresponds essentially to embodiment of the method, so related place is referring to method reality
Apply the part explanation of example.The apparatus embodiments described above are merely exemplary, wherein described be used as separation unit
The unit of explanation may or may not be physically separated, it can and it is in one place, or can also be distributed
Onto multiple network units.Some or all of the modules therein can be selected to realize the present embodiment side according to the actual needs
The purpose of case.Those of ordinary skill in the art can understand and implement without creative efforts.
The above description is merely a specific embodiment, under above-mentioned introduction of the invention, those skilled in the art
Other improvement or deformation can be carried out on the basis of the above embodiments.It will be understood by those skilled in the art that above-mentioned tool
Body description only preferably explains that the purpose of the present invention, protection scope of the present invention are subject to the protection scope in claims.
Claims (10)
1. a kind of calculation method of parking position number, which is characterized in that this method comprises:
Obtain the parklog file of the record vehicle parking information in parking lot in a measurement period；
Data cleansing processing is carried out to the parklog file；
According to data cleansing treated parklog file, judge the parking lot whether have parked for designated vehicle it is exclusive
Parking stall and the exclusive parking stall number when there is exclusive parking stall；
According to the vehicle number or according to vehicle number and the exclusive parking stall of marching into the arena of marching into the arena of parklog file instruction
The sum of number, calculates the quasi- parking stall number in a parking lot measurement period Nei,
The quasi- parking stall number in the parking lot in more each measurement period, using the maximum value of quasi- parking stall number as the calculated parking
The parking stall number of field.
2. the method according to claim 1, wherein carrying out data cleansing processing packet to the parklog file
It includes:
Filtering out does not have the record of license board information in parklog file,
For remaining record, judge each record whether only march into the arena information and without information of leaving the theatre,
It is then, the vehicle of the record instruction to be determined according to the time of marching into the arena in default parking duration and the information of marching into the arena
Leaving time, and information of leaving the theatre is supplemented for the record；
Wherein, the default parking duration is the duration or according to the note of averagely being stopped according to all vehicles in parking lot N days
Time of marching into the arena identical first M days average parking durations in the information of marching into the arena of record determine.
3. according to the method described in claim 2, it is characterized in that, carrying out data cleansing processing packet to the parklog file
It includes:
According to the parking duration respectively recorded in the parklog file, by the parking duration respectively recorded and a default threshold
Value is compared,
If it is greater than or equal to the preset threshold, then retain the record,
The record is then filtered out if it is less than the preset threshold；
Wherein, the preset threshold is the parking duration calculation variance of all vehicles in a measurement period according to the parking lot
After standard deviation, determined by the standard deviation of three times.
4. the method according to claim 1, wherein being sentenced according to data cleansing treated parklog file
Whether the parking lot of breaking has the exclusive parking stall parked for designated vehicle and the exclusive parking stall number when there is exclusive parking stall includes:
According to the information for the correspondence predetermined characteristic recorded in data cleansing treated parklog file, extraction obtains parking day
It is each in will file to record corresponding feature vector, this feature vector input classifier trained in advance is classified, is obtained
Classification results determine whether parking lot has the exclusive parking stall parked for designated vehicle and having exclusive parking stall according to classification results
When exclusive parking stall number.
5. the method according to claim 1, wherein the vehicle number of marching into the arena indicated according to the parklog file
Or according to march into the arena vehicle number and the exclusive parking stall number, calculate the quasi- parking stall number packet in a parking lot measurement period Nei
It includes:
Corresponding vehicle number of marching into the arena of multiple time points in a measurement period is obtained, by vehicle number and the exclusive vehicle of marching into the arena
Digit is added to obtain the time point corresponding first parking stall number,
Compare the corresponding first parking stall number of each time point in a measurement period, using the first parking stall number maximum value as statistics week
The quasi- parking stall number in parking lot in phase.
6. a kind of computing device of parking position number, which is characterized in that the device includes:
Log acquisition module, the parklog text of the record vehicle parking information for obtaining parking lot in a measurement period
Part；
Data cleansing module, for carrying out data cleansing processing to the parklog file；
Judgment module, for judging whether the parking lot has for specified according to data cleansing treated parklog file
The exclusive parking stall of vehicle parking and the exclusive parking stall number when there is exclusive parking stall；
Computing module, for according to the parklog file indicate march into the arena vehicle number or according to it is described march into the arena vehicle number and
The sum of described exclusive parking stall number calculates the quasi- parking stall number in a parking lot measurement period Nei, should in more each measurement period
The quasi- parking stall number in parking lot, using the maximum value of quasi- parking stall number as the parking stall number in the calculated parking lot.
7. device according to claim 6, which is characterized in that the data cleansing module, specifically for filtering out parking
There is no the record of license board information in journal file, for remaining record, judge each record whether only march into the arena information and without from
Field information is then, the vehicle of the record instruction to be determined according to the time of marching into the arena in default parking duration and the information of marching into the arena
Leaving time, and leave the theatre information for record supplement；
Wherein, the default parking duration is the duration or according to the note of averagely being stopped according to all vehicles in parking lot N days
Time of marching into the arena identical first M days average parking durations in the information of marching into the arena of record determine.
8. device according to claim 7, which is characterized in that the data cleansing module, specifically for stopping according to
The parking duration respectively recorded is compared, such as by the parking duration respectively recorded in vehicle journal file with a preset threshold
Fruit is more than or equal to the preset threshold, then retains the record, then filter out the record if it is less than the preset threshold；
Wherein, the preset threshold is the parking duration calculation variance of all vehicles in a measurement period according to the parking lot
After standard deviation, determined by the standard deviation of three times.
9. device according to claim 6, which is characterized in that the judgment module is specifically used at according to data cleansing
The information for the correspondence predetermined characteristic recorded in parklog file after reason, extraction obtain each record pair in parklog file
This feature vector input classifier trained in advance is classified, obtains classification results, tied according to classification by the feature vector answered
Fruit determines whether parking lot has the exclusive parking stall parked for designated vehicle and the exclusive parking stall number when there is exclusive parking stall.
10. device according to claim 6, which is characterized in that the computing module is specifically used for obtaining a statistics week
The vehicle number of marching into the arena is added to obtain the time by corresponding vehicle number of marching into the arena of multiple time points in the phase with the exclusive parking stall number
Point corresponding first parking stall number compares the corresponding first parking stall number of each time point in a measurement period, most by the first parking stall number
Quasi- parking stall number of the big value as parking lot in the measurement period.
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| CN110164171A (en) * | 2019-04-18 | 2019-08-23 | 孙进 | A kind of parking stall distribution method, parking stall distribution system and storage medium |
| CN111429719B (en) * | 2020-03-20 | 2021-07-23 | 北京工业大学 | Method for calculating number of vehicles in parking lot by using intelligent parking lot entrance and exit data |
| CN112466149B (en) * | 2020-11-16 | 2021-11-26 | 深圳市前海亿车科技有限公司 | Parking management method and system for improving accuracy of real-time parking vacant parking position statistics |
| CN112435500B (en) * | 2020-12-01 | 2022-03-08 | 深圳市顺易通信息科技有限公司 | Method and device for counting remaining parking spaces of parking lot and terminal equipment |
| CN112863235B (en) * | 2021-01-05 | 2022-05-27 | 北京智联云海科技有限公司 | Method and device for predicting parking space vacancy rate |
| CN113096438B (en) * | 2021-04-01 | 2022-11-11 | 深圳市顺易通信息科技有限公司 | Vehicle identification method and device and related equipment |
| CN113257004B (en) * | 2021-06-03 | 2021-09-21 | 成都宜泊信息科技有限公司 | Parking space management method and system, storage medium and electronic equipment |
| CN113793507A (en) * | 2021-11-16 | 2021-12-14 | 湖南工商大学 | Available parking space prediction method and device, computer equipment and storage medium |
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