CN113257004B - Parking space management method and system, storage medium and electronic equipment - Google Patents

Parking space management method and system, storage medium and electronic equipment Download PDF

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Publication number
CN113257004B
CN113257004B CN202110616857.6A CN202110616857A CN113257004B CN 113257004 B CN113257004 B CN 113257004B CN 202110616857 A CN202110616857 A CN 202110616857A CN 113257004 B CN113257004 B CN 113257004B
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parking
vehicles
obtaining
time
time length
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CN113257004A (en
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陈诚
杨涛
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Chengdu Ebo Information Technology Co ltd
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Chengdu Ebo Information Technology Co ltd
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/065—Traffic control systems for road vehicles by counting the vehicles in a section of the road or in a parking area, i.e. comparing incoming count with outgoing count
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas

Abstract

The invention is suitable for the technical field of parking space management, and provides a parking space management method, which comprises the following steps: step S100: obtaining actual parking number of parking lotPThe number of vehicles on the spot recorded by the system; step S200: obtaining a parking duration thresholdN(ii) a Step S300: according to the obtained parking time thresholdN，Obtaining the parking time length more than or equal toNThe number of vehicles of (1); step S400: calculating the number of remaining parking positions, wherein the number of remaining parking positions = the number of actual parking positionsP- (number of vehicles present recorded by the system-length of parking greater than or equal toNNumber of vehicles) of the vehicle. The number of the remaining parking spaces calculated by the method can be used as the number of the garbage vehicles in the parking lot management system when the parking time exceeds the parking time threshold, and is not counted into the number of the vehicles on site, so that the influence caused by wrong license plate identification or uncertain operation of the parking lot system is counteracted, the number of the remaining parking spaces is judged more accurately, and effective management of the parking spaces is realized.

Description

Parking space management method and system, storage medium and electronic equipment
Technical Field
The present invention relates to the field of parking space management technologies, and in particular, to a parking space management method, a parking space management system, a storage medium, and an electronic device.
Background
The importance of parking space management lies in that the number of the remaining parking spaces in the parking lot can be accurately known, and effective management of vehicle access is realized; by researching the occupation conditions of temporary parking and monthly car renting, the effective allocation of the parking spaces can be realized, and the parking space resources are utilized to the maximum extent.
At present, a license plate recognition system is commonly used in a parking lot, and the license plate recognition brings convenience and simultaneously makes the parking space management of the parking lot difficult, firstly, the operation of the parking lot system has uncertainty, for example, after power failure and network disconnection, vehicles enter and exit without being recorded in the parking lot system, secondly, the license plate recognition system has a certain recognition error rate, and a large amount of garbage data can be generated after a period of time is accumulated; the above conditions can cause inaccurate judgment on the number of the remaining parking spaces, which leads to the waste of parking space resources and can not effectively utilize the parking space resources. Therefore, parking space management is difficult and painful for the parking lot, and the situation of each parking space needs to be eliminated by adopting a manual correction scheme, so that the workload is extremely high, the manpower waste is caused, and the efficiency is low.
Disclosure of Invention
In order to solve the above problems, a first aspect of the present invention provides a parking space management method, including:
step S100: obtaining actual parking number of parking lotPThe number of vehicles on the spot recorded by the system;
step S200: obtaining a parking duration thresholdN；
Step S300: according to the obtained parking time thresholdNObtaining the parking time length more than or equal toNThe number of vehicles of (1);
step S400: calculating the number of remaining parking positions, wherein the number of remaining parking positions = the number of actual parking positionsP- (number of vehicles present recorded by the system-length of parking greater than or equal toNNumber of vehicles) of the vehicle.
Further, step S100 includes:
step S101: obtaining the number of parked vehicles in each statistical period
Figure 590657DEST_PATH_IMAGE001
，iIs the sequence number of each statistical period,ncounting the total number of the periods;
step S102: comparing the number of parked vehicles in each statistical period
Figure 270032DEST_PATH_IMAGE002
Taking the maximum value of the number of parked vehicles as the actual number of parking digits of the parking lotPI.e. by
Figure 998953DEST_PATH_IMAGE003
，
Figure 281030DEST_PATH_IMAGE004
。
Further, step S200 includes:
step S201: manually setting a parking time thresholdN。
Further, step S200 includes:
step S202: obtaining the number of parking times of each parking duration
Figure 779007DEST_PATH_IMAGE005
，
Figure 878550DEST_PATH_IMAGE006
，jIn order to have a long time for parking,hthe maximum parking duration;
step S203: according to a preset coefficientRSolving forNThat is, a parking time threshold value is obtainedNWherein, in the step (A),
Figure 94768DEST_PATH_IMAGE007
。
further, step S200 includes:
step S204: acquiring the time length that the number of vehicles entering the field is equal to the number of vehicles leaving the field, and taking the time length as a parking time length threshold valueN。
Further, step S200 includes:
step S205: specified time rangeTAnd dividing the time rangeT，
Figure 554437DEST_PATH_IMAGE008
，
Figure 375763DEST_PATH_IMAGE009
，
Wherein:
Figure 646207DEST_PATH_IMAGE010
in order to divide the duration of the time period,
Figure 84142DEST_PATH_IMAGE011
is of duration
Figure 583387DEST_PATH_IMAGE012
The number of the (c) component(s),kin order to divide the time length category serial number,gthe total number of the divided time length types is obtained;
step S206: obtaining
Figure 55957DEST_PATH_IMAGE013
Difference value between vehicle entering number and vehicle leaving number of duration
Figure 372669DEST_PATH_IMAGE014
，
Figure 297899DEST_PATH_IMAGE015
，mIs the difference number;
step S207: solving mean square error
Figure 850103DEST_PATH_IMAGE016
Wherein
Figure 177180DEST_PATH_IMAGE017
；
Step S208: will minimize the mean square error
Figure 930372DEST_PATH_IMAGE018
The corresponding time length is used as the time length threshold value of the parkingNWherein, in the step (A),
Figure 342899DEST_PATH_IMAGE019
，
Figure 682482DEST_PATH_IMAGE020
。
in a second aspect of the present invention, a parking space management system is provided, which includes the following modules:
a first obtaining module for obtaining the actual parking number of the parking lotPThe number of vehicles on the spot recorded by the system;
a second obtaining module for obtaining the parking time thresholdN；
A third obtaining module for obtaining the parking time threshold valueN，Obtaining the parking time length more than or equal toNThe number of vehicles of (1);
a calculation module for calculating a remaining parking space, the remaining parking space = an actual number of parkable parking spacesP- (number of vehicles present recorded by the system-length of parking greater than or equal toNNumber of vehicles) of the vehicle.
Further, the first obtaining module obtains the number of parked vehicles in each statistical period
Figure 864065DEST_PATH_IMAGE021
Comparing the number of parked vehicles in each statistical period
Figure 647213DEST_PATH_IMAGE022
Number of vehicles to be parked
Figure 547036DEST_PATH_IMAGE022
The maximum value of (A) is used as the actual parking number of the parking lotPI.e. by
Figure 581988DEST_PATH_IMAGE023
，
Figure 618077DEST_PATH_IMAGE004
，
In the formula:iis the sequence number of each statistical period,nis the total number of statistical periods.
In a third aspect of the present invention, a readable storage medium is provided, where the readable storage medium is used for storing a program, and when the program is executed, the readable storage medium is used for implementing the parking space management method.
In a fourth aspect of the invention, an electronic device is provided, the electronic device comprising one or more processors; a memory having one or more programs stored thereon; when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the aforementioned space management method.
Compared with the prior art, the invention at least has the following technical effects:
1) compared with the prior art that the number of the remaining parking spaces is calculated on the basis of the number of planned parking spaces, the number of the remaining parking spaces is calculated on the basis of the obtained actual number of the parking spaces, the number of the remaining parking spaces calculated by the method is more in line with the actual situation, the accuracy rate is higher, effective utilization of parking space resources is facilitated, and the method has more practical application value.
2) The number of the parked vehicles in each statistical period is obtained by comparison, and the maximum value is taken as the actual parking number of the parking lot; compared with the prior art, the obtained actual parking number is higher in efficiency and accuracy rate, the requirement of parking space management can be met, and calculation of the subsequent remaining parking number is facilitated.
3) According to the invention, the number of the vehicles with the parking time length exceeding the parking time length threshold value is taken as the number of the garbage vehicles in the parking lot management system and is not counted into the number of the vehicles on site, so that the influence caused by wrong license plate identification or uncertain operation of the parking lot system can be counteracted, and the judgment of the number of the remaining parking places is more accurate; the parking space resource is utilized to the maximum extent, and effective management of the parking space is realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention or in the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a parking space management method according to the present invention;
FIG. 2 is a parking time threshold provided by one embodiment of the present inventionNCalculating a flow schematic diagram;
FIG. 3 is a schematic structural diagram of a parking space management system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
Aspects of the present invention will be described more fully hereinafter with reference to the accompanying drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Based on the teachings herein one skilled in the art should appreciate that the scope of the present invention is intended to encompass any aspect disclosed herein, whether alone or in combination with any other aspect of the invention to accomplish any aspect disclosed herein. For example, it may be implemented using any number of the apparatus or performing methods set forth herein. In addition, the scope of the present invention is intended to cover apparatuses or methods implemented with other structure, functionality, or structure and functionality in addition to the various aspects of the invention set forth herein. It is to be understood that any aspect disclosed herein may be embodied by one or more elements of a claim.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The terms "comprises," "comprising," and the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.
All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It is noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of this specification and should not be interpreted in an idealized or overly formal sense.
At present, a license plate recognition system is commonly used in a parking lot, and the license plate recognition brings convenience and simultaneously makes the parking space management of the parking lot difficult, firstly, the operation of the parking lot system has uncertainty, for example, after power failure and network disconnection, vehicles enter and exit without being recorded in the parking lot system, secondly, the license plate recognition system has a certain recognition error rate, and a large amount of garbage data can be generated after a period of time is accumulated; the above conditions can cause inaccurate judgment on the number of the remaining parking spaces, which leads to the waste of parking space resources and can not effectively utilize the parking space resources.
Therefore, parking space management is difficult and painful for the parking lot, and the situation of each parking space needs to be eliminated by adopting a manual correction scheme, so that the workload is extremely high, the manpower waste is caused, and the efficiency is low. Therefore, it is necessary to provide an effective parking space management method.
In view of this, as shown in fig. 1, an embodiment of the present invention provides a parking space management method, including the following steps:
step S100: obtaining actual parking number of parking lotPAcquiring the number of the vehicles on the spot recorded by the system;
step S200: obtaining a parking duration thresholdN；
Step S300: according to the obtained parking time thresholdNObtaining the parking time length more than or equal toNThe number of vehicles of (1);
step S400: calculating the number of remaining parking positions, wherein the number of remaining parking positions = the number of actual parking positionsP- (number of vehicles present recorded by the system-length of parking greater than or equal toNNumber of vehicles) of the vehicle.
Actual parking number of parking lotPMeans that: the number of the parking spaces defined in the parking lot is limited, so that in the parking lot with the shortage of parking space resources, the vehicles are guided to park in non-defined areas such as aisles, temporary parking areas and the like, and the aim of parking more vehicles is fulfilled. The actual number of parkable parking lots is necessarily larger than the number of planned vehicles. When carrying out parking area parking stall management, it is more meaningful than planning the parking stall ratio to know actual parking stall.
The parking duration threshold refers to: in a normal state, the parking lot vehicle is parked for a long time.
Parking in parking lots is generally regular, for example, in parking lots in shopping malls and office buildings, the time for parking a vehicle once generally does not exceed one day, so that one day can be set as a parking time threshold value of the parking lots in the shopping malls and the office buildings; the vehicle parking time of the hospital parking lot generally cannot exceed two days, so that the parking time threshold of the hospital parking lot can be set to two days. Therefore, the parking time length threshold values with different time lengths can be set according to different parking lot models.
In this embodiment, the parking duration threshold is setNObtaining the parking time length more than or equal toNThe number of vehicles exceeds the parking time threshold valueNThe number of the vehicles is regarded as the number of the garbage vehicles in the parking lot management system and is not counted into the number of the vehicles on site, namely:
number of remaining parking positions = number of actual parkable parking positionsP- (number of vehicles present recorded by the system-length of parking greater than or equal toNNumber of vehicles);
therefore, the influence caused by wrong license plate recognition or uncertain operation of the parking lot system can be counteracted.
Such as: because a parking lot system is unstable in operation or a license plate is wrongly identified, a certain vehicle leaves the parking lot, but the leaving data is not included in the parking lot management system, so that the parking duration of the vehicle is continuously calculated in the parking lot management system (for example, the parking duration of the vehicle is recorded in the system as 3 days), the number of the vehicles on the field recorded in the parking lot management system is not accurate, the vehicles which leave the parking lot are counted, and the obtained number of the remaining parking spaces in the parking lot is inaccurate.
By setting a parking duration threshold in the parking lot management systemN(e.g., setting the parking duration threshold to 1 day), will be greater than the parking duration thresholdNAs spam data; thus, the system does not factor in the data when calculating the number of vehicles present and the number of remaining vehicle positions. Thereby the remaining parking space number is judged more accurately.
Of course, there may be small differences in this calculation method, such as filtering out vehicle data that are actually present (e.g., vehicle data that have a real parking duration of 3 days and are not left). However, in the whole view, as long as the threshold value of the parking time is reasonably set, the accuracy of the calculation method is extremely high. Therefore, setting a reasonable parking duration threshold is of paramount importance. How to reasonably set the parking duration threshold will be explained in detail below.
In the embodiment, on one hand, the number of remaining parking spaces is calculated on the basis of obtaining the actual number of parking spaces of the parking lot, and compared with the method for calculating the number of remaining parking spaces on the basis of the number of planned parking spaces of the parking lot in the prior art, the method is more suitable for the actual situation of the parking lot, and the obtained number of remaining parking spaces is more accurate.
On the other hand, the parking space management method of the embodiment sets the threshold of the parking timeNAcquiring the parking time length greater than the parking time length threshold valueNThe number of the vehicles is calculated by subtracting the threshold value that the parking time is longer than the parking time in the calculation of the remaining parking spacesNThe number of the vehicles in the parking lot management system can be offset due to the fact that the number of the vehicles in the parking lot management system is inaccurate due to the fact that the license plate is identified incorrectly or the operation of the parking lot system is uncertain.
In one embodiment, step S100 includes:
step S101: obtaining the number of parked vehicles in each statistical period
Figure 322859DEST_PATH_IMAGE024
，iIs the sequence number of each statistical period,ncounting the total number of the periods;
step S102: comparing the number of parked vehicles in each statistical period
Figure 709978DEST_PATH_IMAGE024
Taking the maximum value of the number of parked vehicles as the actual number of parking digits of the parking lotPNamely:
Figure 407676DEST_PATH_IMAGE025
，
Figure 563850DEST_PATH_IMAGE004
。
the embodiment provides a method for obtaining the actual parking number of a parking lotPThe specific process of (1).
The statistical period refers to a time range, which may be one day, two days, one week, one month, etc.
Under the general condition, the length of the statistical period is set according to the state of the parking lot, for example, for the parking lot of a shopping mall office building, the statistical period can be set to one day, and for the parking lot of a hospital, the statistical period can be set to two days.
In practical application, the length of the statistical period can be selected and set according to the requirement of calculation accuracy.
The specific method comprises the following steps: the parking lot parking method comprises the steps of firstly obtaining the number of parked vehicles in each statistical period (such as one day), then comparing the obtained number of parked vehicles in each statistical period, and taking the maximum value as the actual parking number of the parking lot. The following explains the method by taking one day as a statistical period and taking five statistical periods in total:
the number of parked vehicles in the first statistical period (first day) is
Figure 564167DEST_PATH_IMAGE026
，
Figure 15746DEST_PATH_IMAGE027
A vehicle;
the number of parked vehicles in the second statistical period (the second day) is
Figure 189239DEST_PATH_IMAGE028
，
Figure 527816DEST_PATH_IMAGE029
A vehicle;
the number of parked vehicles in the third statistical period (third day) is
Figure 495772DEST_PATH_IMAGE030
，
Figure 795166DEST_PATH_IMAGE031
A vehicle;
the number of parked vehicles in the fourth statistical period (fourth day) is
Figure 241191DEST_PATH_IMAGE032
，
Figure 716166DEST_PATH_IMAGE033
A vehicle;
the number of parked vehicles in the fifth statistical period (fifth day) is
Figure 855023DEST_PATH_IMAGE034
，
Figure 438451DEST_PATH_IMAGE035
A vehicle;
the numbers of parked vehicles in the five statistical periods are compared, and the maximum value 120 is taken as the actual number of parkable vehicles in the parking lot. Namely:
Figure 16063DEST_PATH_IMAGE036
。
of course, a similar approach can be used to obtain the number of parked vehicles within a statistical period. Each statistical period is further divided into a plurality of sub-periods, the number of parked vehicles in each sub-period is obtained respectively, the obtained number of parked vehicles in each sub-period is compared, and the maximum value of the number of parked vehicles in each statistical period is taken to represent the number of parked vehicles in the statistical period. Such as:
the first statistical period may be
Figure 1337DEST_PATH_IMAGE026
(first day), further divided into 4 sub-periods, and the number of parked vehicles in each sub-period is obtained
Figure 779937DEST_PATH_IMAGE026
：
In the first sub-period, 0 to 6 points are obtained, and the number of the obtained parked vehicles is
Figure 850661DEST_PATH_IMAGE037
：
Figure 498810DEST_PATH_IMAGE037
=50, wherein
Figure 338590DEST_PATH_IMAGE037
Representing the number of parked vehicles at a certain moment in the first sub-period (0 to 6), wherein the number of parked vehicles at the moment is the maximum value of the number of parked vehicles at all the moments in the first sub-period;
in the second sub-period, 6 to 12 points, the number of the obtained parked vehicles is
Figure 288091DEST_PATH_IMAGE038
：
Figure 580532DEST_PATH_IMAGE038
=90, wherein
Figure 765526DEST_PATH_IMAGE038
Representing the number of vehicles parked at a certain moment in the second sub-period (6 to 12 points), wherein the number of the vehicles parked at the moment is the maximum value of the number of the vehicles parked at all the moments in the second sub-period;
in the third sub-period from 12 to 18 points, the obtained number of parked vehicles is
Figure 459812DEST_PATH_IMAGE039
：
Figure 455581DEST_PATH_IMAGE039
=100, wherein
Figure 500898DEST_PATH_IMAGE039
Representing the number of vehicles parked at a certain moment in the third sub-period (12-18 points), wherein the number of the vehicles parked at the moment is the maximum value of the number of the vehicles parked at all the moments in the third sub-period;
in the fourth sub-period from 18 to 24 points, the obtained number of parked vehicles is
Figure 99369DEST_PATH_IMAGE040
：
Figure 648162DEST_PATH_IMAGE040
=70, wherein
Figure 736204DEST_PATH_IMAGE040
Representing the number of vehicles parked at a certain moment in the fourth sub-period (18-24 points), wherein the number of the vehicles parked at the moment is the maximum value of the number of the vehicles parked at all the moments in the fourth sub-period;
Figure 377139DEST_PATH_IMAGE041
compared with the prior art, the actual parking number of the parking lot obtained by the calculation method of the embodiment is higher in efficiency, and the actual parking number of the parking lot can be more accurately obtained, so that the requirement of parking space management is met.
In one embodiment, step S200 includes:
step S201: obtaining a manually set parking duration thresholdN。
In the scheme, a threshold value for obtaining a parking lot is providedNThe method (2) is implemented by manual setting.
For example, in some parking lots, a parking lot manager directly and manually sets a certain time period (e.g., three days) according to actual management experience, and uses the time period (three days) as a parking time period threshold valueN。
In one embodiment, step S200 includes:
step S202: obtaining the number of parking times of each parking duration
Figure 903935DEST_PATH_IMAGE042
，
Figure 651442DEST_PATH_IMAGE043
，jIn order to have a long time for parking,hthe maximum parking duration;
step S203: according to presetRSolving forNThat is, a parking time threshold value is obtainedNWherein, in the step (A),
Figure 910385DEST_PATH_IMAGE044
。
in the scheme, another threshold value for obtaining the parking time length is providedNThe method of (1). The method specifically comprises the following steps:
firstly, within a certain time range, obtaining the parking times of each parking duration; for example, in one day, assuming that the maximum parking time is 24h, the proportion of parking times is presetR=0.05%：
Stopping for 1 hourThe number of times of the vehicle is
Figure 867977DEST_PATH_IMAGE045
；
The number of times of parking for a parking time of 2 hours is
Figure 870568DEST_PATH_IMAGE046
；
The number of times of parking for a parking time of 3 hours is
Figure 190691DEST_PATH_IMAGE047
；
……
The parking factor for a parking time of 24 hours is
Figure 932120DEST_PATH_IMAGE048
；
Then when
Figure 501641DEST_PATH_IMAGE049
Then, can obtainNThe length of time that the edge will acquire at this timeNAs a parking duration thresholdN。
In one embodiment, step S200 includes:
step S204: acquiring the time length that the number of vehicles entering the field is equal to the number of vehicles leaving the field, and taking the time length as a parking time length threshold valueN。
In the above scheme, another threshold for obtaining the parking time length is providedNThe method of (1). The method specifically comprises the following steps:
starting to acquire the number of vehicles entering the parking lot and the number of vehicles leaving the parking lot from the first moment, and taking the time length corresponding to the first moment to the second moment as the threshold value of the parking time length when the number of vehicles entering the parking lot is equal to the number of vehicles leaving the parking lot at the second momentN。
It can also be understood that if the number of vehicles entering the parking lot within a certain period of time (e.g., two days) is equal to the number of vehicles leaving the parking lot, the period of time (e.g., two days) is used as the threshold of the parking periodN。
As shown in fig. 2, in one embodiment, step S200 includes:
step S205: specified time rangeTAnd then the division is carried out,
Figure 42344DEST_PATH_IMAGE008
，
Figure 889077DEST_PATH_IMAGE009
，
wherein:
Figure 365189DEST_PATH_IMAGE013
in order to divide the duration of the time period,
Figure 828532DEST_PATH_IMAGE011
is of duration
Figure 15668DEST_PATH_IMAGE013
The number of the (c) component(s),kin order to divide the time length category serial number,gthe total number of the divided time length types is obtained;
step S206: obtaining
Figure 841542DEST_PATH_IMAGE013
Difference value between vehicle entering number and vehicle leaving number of duration
Figure 347609DEST_PATH_IMAGE050
，
Figure 563827DEST_PATH_IMAGE051
，mIs the difference number;
step S207: solving mean square error
Figure 649595DEST_PATH_IMAGE052
Wherein
Figure 2079DEST_PATH_IMAGE017
；
Step S208: will minimize the mean square error
Figure 23255DEST_PATH_IMAGE053
The corresponding time length is used as the time length threshold value of the parkingNWherein, in the step (A),
Figure 461190DEST_PATH_IMAGE054
，
Figure 475282DEST_PATH_IMAGE020
。
in the above scheme, another threshold for obtaining the parking time length is providedNThe method of (1). The method specifically comprises the following steps:
first, a time range is specifiedT（Such asT=30 days), and it was measured at different time periods (three time periods,g= 3) are divided as follows:
taking one day as a time length, the time length can be divided into 30 time lengths
Figure 682273DEST_PATH_IMAGE055
，
Figure 264564DEST_PATH_IMAGE056
=30；
Two days are taken as one time length, and the time length can be divided into 15 time lengths; then
Figure 189795DEST_PATH_IMAGE057
，
Figure 997126DEST_PATH_IMAGE058
=15；
Three days are taken as one time length, and the time length can be divided into 10 time lengths; then
Figure 324202DEST_PATH_IMAGE059
，
Figure 77394DEST_PATH_IMAGE060
=10；
Second, obtain
Figure 224342DEST_PATH_IMAGE061
The difference between the number of the vehicles entering the field and the number of the vehicles leaving the field in the duration is 30 in total, and the difference is respectively as follows:
Figure 580237DEST_PATH_IMAGE062
，
Figure 761819DEST_PATH_IMAGE063
，
Figure 561279DEST_PATH_IMAGE064
……，
Figure 461102DEST_PATH_IMAGE065
，
Figure 27213DEST_PATH_IMAGE066
；
obtaining
Figure 266564DEST_PATH_IMAGE067
The difference between the number of vehicles entering the field and the number of vehicles leaving the field in the duration is 15 in total, which are respectively as follows:
Figure 892717DEST_PATH_IMAGE068
，
Figure 342153DEST_PATH_IMAGE069
，
Figure 711955DEST_PATH_IMAGE070
……，
Figure 914135DEST_PATH_IMAGE071
，
Figure 304665DEST_PATH_IMAGE072
；
obtaining
Figure 913501DEST_PATH_IMAGE073
The difference between the number of vehicles entering the field and the number of vehicles leaving the field in the duration is 10 in total, and the difference is respectively as follows:
Figure 900043DEST_PATH_IMAGE074
，
Figure 379565DEST_PATH_IMAGE075
，
Figure 347521DEST_PATH_IMAGE076
……，
Figure 771550DEST_PATH_IMAGE077
，
Figure 483154DEST_PATH_IMAGE078
；
thirdly, solving the mean square error of each time length:
Figure 82762DEST_PATH_IMAGE079
；
Figure 221619DEST_PATH_IMAGE080
；
Figure 539468DEST_PATH_IMAGE081
；
finally, the minimum mean square error is determined
Figure 631927DEST_PATH_IMAGE082
The corresponding time length is used as the time length threshold value of the parkingN(ii) a Such as:
Figure 617201DEST_PATH_IMAGE083
then will be
Figure 254855DEST_PATH_IMAGE084
The corresponding time length (two days) is taken as the time length threshold value of the parkingN。
When the interpolation of the number of vehicles entering the field and the number of vehicles leaving the field of each duration is obtained, the duration can be obtainedFurther, the time duration is divided into a plurality of sub-time durations, the interpolation values of the number of vehicles entering the field and the number of vehicles leaving the field in each sub-time duration are obtained, and the interpolation values are summed. As for
Figure 60000DEST_PATH_IMAGE085
The time duration (one day) can be further divided into 24 sub-time durations (one hour), and the number of vehicles entering the field in each sub-time duration is obtained (N 1 ，N 2 ，N 3 ，……，N 23 ，N 24 ) Then, then
Figure 582248DEST_PATH_IMAGE086
=（N 1 +N 2 +N 3 +……+N 23 +N 24 ) And so on.
In obtaining a parking duration thresholdNThen, a threshold value greater than or equal to the parking time length can be obtainedNThe number of remaining vehicle positions can be calculated by the following formula:
number of remaining parking positions = number of actual parkable parking positionsP- (number of vehicles present recorded by the system-length of parking greater than or equal toNNumber of vehicles) of the vehicle.
Besides, an artificial intelligence method can be adopted to obtain the parking time thresholdN. For example, by establishing a parking lot digital model and automatically calculating the parking time threshold value by adopting an artificial intelligence algorithm (such as a genetic algorithm, a neural network algorithm and the like)N。
The number of remaining parking spaces calculated by the parking space management method can be regarded as the number of garbage vehicles in the parking lot management system, and the number of the garbage vehicles in the parking lot management system is not counted into the number of the vehicles in the field, so that the influence caused by wrong license plate recognition or uncertain operation of the parking lot system can be counteracted, and the judgment of the number of the remaining parking spaces is more accurate; the parking space resource is utilized to the maximum extent, and effective management of the parking space is realized.
As shown in fig. 3, another embodiment of the present invention provides a parking space management system, which includes the following modules:
a first obtaining module for obtaining the actual parking number of the parking lotPThe number of vehicles on the spot recorded by the system;
a second obtaining module for obtaining the parking time thresholdN；
A third obtaining module for obtaining the parking time threshold valueN，Obtaining the parking time length more than or equal toNThe number of vehicles of (1);
a calculation module for calculating a remaining parking space, the remaining parking space = an actual number of parkable parking spacesP- (number of vehicles present recorded by the system-length of parking greater than or equal toNNumber of vehicles) of the vehicle.
Further, the first obtaining module is used for obtaining the first data,
obtaining the number of parked vehicles in each statistical period
Figure 422028DEST_PATH_IMAGE087
Comparing the number of parked vehicles in each statistical period
Figure 981317DEST_PATH_IMAGE088
Number of vehicles to be parked
Figure 539337DEST_PATH_IMAGE089
The maximum value of (A) is used as the actual parking number of the parking lotPI.e. by
Figure 724331DEST_PATH_IMAGE090
，
Figure 887459DEST_PATH_IMAGE091
，
In the formula:iis the sequence number of each statistical period,nis the total number of statistical periods.
Further, the second obtaining module is used for obtaining the data,
obtaining manually set parking duration thresholdN。
Further, the second obtaining module is used for obtaining the data,
obtaining the number of parking times of each parking duration
Figure 539020DEST_PATH_IMAGE092
，
Figure 161500DEST_PATH_IMAGE093
，jIn order to have a long time for parking,hthe maximum parking duration; according to a preset coefficientRSolving forNThat is, a parking time threshold value is obtainedNWherein, in the step (A),
Figure 556710DEST_PATH_IMAGE094
。
further, the second obtaining module is used for obtaining the data,
acquiring the time length that the number of vehicles entering the field is equal to the number of vehicles leaving the field; using the time length as a parking time length threshold valueN。
Further, the second obtaining module is used for obtaining the data,
specified time rangeTAnd then the division is carried out,
Figure 371082DEST_PATH_IMAGE095
，
Figure 521440DEST_PATH_IMAGE096
wherein:
Figure 788474DEST_PATH_IMAGE097
in order to divide the duration of the time period,
Figure 190636DEST_PATH_IMAGE098
is of duration
Figure 859515DEST_PATH_IMAGE099
The number of the (c) component(s),kin order to divide the time length category serial number,gthe total number of the divided time length types is obtained;
obtaining
Figure 197086DEST_PATH_IMAGE100
Difference value between vehicle entering number and vehicle leaving number of duration
Figure 951416DEST_PATH_IMAGE101
，
Figure 281903DEST_PATH_IMAGE102
，mIs the difference number; solving mean square error
Figure 805288DEST_PATH_IMAGE103
Wherein, in the step (A),
Figure 438395DEST_PATH_IMAGE104
；
will minimize the mean square error
Figure 680020DEST_PATH_IMAGE105
The corresponding time length is used as the time length threshold value of the parkingNWherein, in the step (A),
Figure 792027DEST_PATH_IMAGE106
，
Figure 638761DEST_PATH_IMAGE107
。
in another embodiment of the present invention, a readable storage medium is provided, and the readable storage medium is used for storing a program, and when the program is executed, the readable storage medium is used for implementing the parking space management method.
As shown in FIG. 4, another embodiment of the invention provides an electronic device comprising one or more processors; a memory having one or more programs stored thereon; when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the aforementioned space management method.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The parking space management method is characterized by comprising the following steps:
step S100: obtaining actual parking number of parking lotPThe number of vehicles on the spot recorded by the system;
step S200: obtaining a parking duration thresholdN；
Step S300: according to the obtained parking time thresholdN，Obtaining the parking time length more than or equal toNThe number of vehicles of (1);
step S400: calculating the number of remaining parking positions, wherein the number of remaining parking positions = the number of actual parking positionsP- (number of vehicles present recorded by the system-length of parking greater than or equal toNNumber of vehicles) of the vehicle.
2. The space management method according to claim 1, wherein step S100 includes:
step S101: obtaining the number of parked vehicles in each statistical period
Figure 504915DEST_PATH_IMAGE002
，iIs the sequence number of each statistical period,ncounting the total number of the periods;
step S102: comparing the number of parked vehicles in each statistical period
Figure 285789DEST_PATH_IMAGE003
Number of vehicles to be parked
Figure 271063DEST_PATH_IMAGE003
The maximum value of (A) is used as the actual parking number of the parking lot
Figure 377559DEST_PATH_IMAGE005
，Namely, it is
Figure 979441DEST_PATH_IMAGE006
，
Figure 32848DEST_PATH_IMAGE007
。
3. The space management method according to claim 2, wherein step S200 includes:
step S201: manually setting a parking time thresholdN。
4. The space management method according to claim 2, wherein step S200 includes:
step S202: obtaining the number of parking times of each parking duration
Figure 295464DEST_PATH_IMAGE009
，
Figure 307283DEST_PATH_IMAGE011
，
Figure 599724DEST_PATH_IMAGE013
In order to have a long time for parking,
Figure 253559DEST_PATH_IMAGE015
the maximum parking duration;
step S203: according to a preset coefficientRSolving forNThat is, a parking time threshold value is obtainedNWherein, in the step (A),
Figure 479004DEST_PATH_IMAGE017
。
5. the space management method according to claim 2, wherein step S200 includes:
step S204: acquiring the time length that the number of vehicles entering the field is equal to the number of vehicles leaving the field; taking the time length as a parking time length threshold valueN(ii) a The specific method comprises the following steps: and starting to acquire the number of entering and leaving of the vehicles in the parking lot from the first moment, and taking the time length corresponding to the first moment to the second moment as a parking time length threshold value N if the number of entering of the vehicles is equal to the number of leaving of the vehicles at the second moment.
6. The space management method according to claim 2, wherein step S200 includes:
step S205: specifying a time horizon
Figure 130565DEST_PATH_IMAGE019
And dividing the time range
Figure 972619DEST_PATH_IMAGE019
，
Figure 898987DEST_PATH_IMAGE021
，
Figure 447780DEST_PATH_IMAGE023
Wherein:
Figure DEST_PATH_IMAGE025
in order to divide the duration of the time period,
Figure 627832DEST_PATH_IMAGE026
is of duration
Figure 894866DEST_PATH_IMAGE027
The number of the (c) component(s),kin order to divide the time length category serial number,gthe total number of the divided time length types is obtained;
step S206: obtaining
Figure 624924DEST_PATH_IMAGE028
Difference value between vehicle entering number and vehicle leaving number of duration
Figure 824961DEST_PATH_IMAGE030
，
Figure 83904DEST_PATH_IMAGE032
，mIs the difference number;
step S207: solving mean square error
Figure 634971DEST_PATH_IMAGE034
Wherein
Figure 903142DEST_PATH_IMAGE036
；
Step S208: will minimize the mean square error
Figure 724729DEST_PATH_IMAGE038
The corresponding time length is used as the time length threshold value of the parkingNWherein, in the step (A),
Figure 685732DEST_PATH_IMAGE040
，
Figure 661779DEST_PATH_IMAGE042
。
7. the utility model provides a parking stall management system which characterized in that includes following module:
a first obtaining module for obtaining the actual parking number of the parking lotPThe number of vehicles on the spot recorded by the system;
a second obtaining module for obtaining the parking time thresholdN；
A third obtaining module for obtaining the parking time threshold valueN，Obtaining the parking time length more than or equal toNThe number of vehicles of (1);
a calculation module for calculating a remaining parking space, the remaining parking space = an actual number of parkable parking spacesP- (number of vehicles present recorded by the system-length of parking greater than or equal toNNumber of vehicles) of the vehicle.
8. The parking space management system of claim 7, wherein the first obtaining module obtains the number of parked vehicles in each statistical period
Figure 999219DEST_PATH_IMAGE044
Comparing the number of parked vehicles in each statistical period
Figure 173848DEST_PATH_IMAGE045
Number of vehicles to be parked
Figure DEST_PATH_IMAGE046
Maximum value is used as actual parking number of the parking lotPI.e. by
Figure DEST_PATH_IMAGE048
，
Figure DEST_PATH_IMAGE050
，
In the formula:iis the sequence number of each statistical period,nis the total number of statistical periods.
9. A readable storage medium storing a program which, when executed, implements the space management method according to any one of claims 1 to 6.
10. An electronic device, comprising: one or more processors; a memory having one or more programs stored thereon; the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method of managing parking spaces of any of claims 1-6.
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