CN112069224A - Vehicle passing number storage method and device, terminal and computer storage medium - Google Patents
Vehicle passing number storage method and device, terminal and computer storage medium Download PDFInfo
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Abstract
The invention provides a method, a device, a terminal and a computer storage medium for storing vehicle passing number, wherein each time a vehicle passing event is obtained, a first count, a second count and a third count are respectively added with 1, the first count is stored in a first database at intervals of a first preset time, the second count is stored in a second database at intervals of a second preset time, and the third count is stored in a third database at intervals of a third preset time.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a method, a device, a terminal and a computer storage medium for storing vehicle passing quantity.
Background
With the increase of automobiles, the pressure of traffic is gradually increased. The traffic flow statistics and the storage of the number of passing vehicles at a certain intersection or region are necessary for traffic control and traffic flow dispersion.
In the related technology, a method of reporting and storing snapshot data once by a vehicle snapshot camera is adopted, on one hand, the resource occupation is large, and a large amount of resources are consumed when the vehicle passing number needs to be counted according to a time period in the follow-up process, so that the efficiency is low.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a method, an apparatus, a terminal and a computer storage medium for storing the number of passing vehicles, which are used to solve the technical problems of large resource consumption and low efficiency when the number of passing vehicles is stored and counted according to a time period in the related art.
The invention provides a method for storing the number of passing vehicles, which comprises the following steps:
adding 1 to the first count, the second count and the third count respectively every time a vehicle passing event is acquired;
storing the first count into a first database at intervals of a first preset time;
storing the second count into a second database at intervals of a second preset time;
and storing the third count into a third database at intervals of third preset time, wherein the time lengths of the first preset time, the second preset time and the third preset time are sequentially increased.
Optionally, before the first count, the second count, and the third count are respectively increased by 1 each time the vehicle passing event is acquired, the method further includes:
acquiring snapshot data reported by license plate snapshot equipment corresponding to the first database, wherein the snapshot data comprises license plate images;
identifying the license plate image to obtain license plate information;
and generating a vehicle passing event.
Optionally, the method further includes:
and respectively acquiring and recording first storage time of the first count stored in a first database, second storage time of the second count stored in a second database and third storage time of the third count stored in a third database.
Optionally, the method further includes:
if the second counting is detected to be abnormal, the current time and the second storage time are obtained, a second counting lost time period is determined according to the current time and the second storage time, a second counting lost number is determined according to the second counting lost time period and each first counting stored in the first database, and the second counting lost number is used as the second counting.
Optionally, the method further includes:
if the third counting is detected to be abnormal, the current time and the third storage time are obtained, a third counting lost time period is determined according to the current time and the third storage time, a third counting lost number is determined according to the first counts stored in the first database, the second counts stored in the second database and the third counting lost time period, and the third counting lost number is used as the third count.
Optionally, the first preset time includes 1 minute, the second preset time includes 1 hour, the third preset time includes 1 day, the first database includes a minute database, the second database includes an hour database, and the third database includes a day database.
Optionally, the method further includes:
acquiring a statistical time period, and decomposing the statistical time period into a statistical day, a statistical time and a statistical minute;
acquiring a third statistical count in the third database according to the statistical day, wherein the third statistical count comprises the sum of all the third counts corresponding to the statistical day in the third database;
acquiring a second statistical count in the second database according to the statistical timing, wherein the second statistical count comprises the sum of each second count corresponding to the statistical timing in the second database;
acquiring a first statistical count in the first database according to the statistical minutes, wherein the first statistical count comprises the sum of each first count corresponding to the statistical minutes in the first database;
and the number of passing vehicles in the statistical time period is equal to the sum of the first statistical count, the second statistical count and the third statistical count.
Optionally, the method further includes:
starting a timer when a first vehicle passing event is acquired, wherein the timer is triggered once every 1 minute;
storing the first count into a first database each time the timer is triggered;
storing the second count in a second database every 60 times the timer is triggered;
the timer stores the third count in a third database every 1440 times it is triggered.
The invention also provides a device for storing the number of passing vehicles, which comprises:
the vehicle passing event acquisition module is used for adding 1 to the first count, adding 1 to the second count and adding 1 to the third count every time a vehicle passing event is acquired;
the first storage module is used for storing the first count into a first database at intervals of first preset time;
the second storage module is used for storing the second count into a second database at intervals of second preset time;
and the third storage module is used for storing the third count into a third database at intervals of third preset time, and the time lengths of the first preset time, the second preset time and the third preset time are sequentially increased.
Optionally, the method further includes:
the snapshot data acquisition module is used for acquiring snapshot data reported by license plate snapshot equipment corresponding to the first database before the vehicle passing event acquisition module acquires a vehicle passing event, and the first count, the second count and the third count are respectively added by 1, wherein the snapshot data comprises license plate images;
the recognition module is used for recognizing the license plate image to obtain license plate information;
and the generation module is used for generating a vehicle passing event. The invention also provides a terminal, which comprises a processor, a memory and a communication bus;
the communication bus is used for connecting the processor and the memory;
the processor is configured to execute the computer program stored in the memory to implement the passing number storage method according to any one of the above embodiments.
The present invention also provides a computer-readable storage medium, having stored thereon a computer program,
the computer program is configured to cause the computer to execute the passing vehicle number storage method according to any one of the above embodiments.
As described above, the method, the device, the terminal and the computer storage medium for storing the vehicle passing amount provided by the invention have the following beneficial effects:
the first count, the second count and the third count are respectively added by 1 every time a vehicle passing event is acquired, the first count is stored into the first database at intervals of first preset time, the second count is stored into the second database at intervals of second preset time, the third count is stored into the third database at intervals of third preset time, high-efficiency and accurate vehicle passing number and persistent data can be achieved, resource consumption is low, efficiency is high, meanwhile, the vehicle passing data are persistent by taking the first preset time as the minimum particles, and the range of data loss when a program has errors can be effectively controlled by controlling the length of the first preset time.
Drawings
Fig. 1 is a schematic flow chart of a method for storing a vehicle passing amount according to an embodiment of the present invention;
fig. 2 is another schematic flow chart of a passing vehicle number storage method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a vehicle passing number storage device according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
Example one
Referring to fig. 1, an embodiment of the present invention provides a method for storing a vehicle passing amount, including:
s101: adding 1 to the first count, the second count and the third count respectively every time a vehicle passing event is acquired;
s102: storing the first count into a first database at intervals of a first preset time;
s103: storing the second count into a second database at intervals of a second preset time;
s104: and storing the third count into a third database at intervals of a third preset time.
And adding 1 to the first count, adding 1 to the second count and adding 1 to the third count every time a vehicle passing event is acquired. For example, the vehicle passing event before the current vehicle passing event X is acquired is the vehicle passing event (X-1), the first count, the second count and the third count corresponding to the vehicle passing event (X-1) are 20,130,370 respectively, at this time, the first count, the second count and the third count corresponding to the current vehicle passing event X are 21,131,371 respectively, and the first count, the second count and the third count corresponding to the next vehicle passing event (X +1) after the current vehicle passing event X are 22,132,372 respectively.
It should be noted that, if there is no previous vehicle passing event, that is, the current vehicle passing event is the initial vehicle passing event, at this time, the first count, the second count, and the third count are all 0, that is, the initial values of the first count, the second count, and the third count are all 0.
In some embodiments, each time a vehicle passing event is acquired, before adding 1 to each of the first count, the second count, and the third count, the method further includes:
acquiring snapshot data reported by license plate snapshot equipment corresponding to a first database, wherein the snapshot data comprises license plate images;
recognizing the license plate image to obtain license plate information;
and generating a vehicle passing event according to the snapshot data.
In some embodiments, the snapshot data further includes a snapshot time.
It should be noted that the steps of generating the passing event and recognizing the license plate image to obtain the license plate information are not limited herein. For example, after the snapshot data is acquired, the license plate image in the snapshot data is recognized, and after the license plate information is acquired, the vehicle passing event is generated according to the snapshot data. For another example, the passing event is generated while the license plate image is recognized to obtain the license plate information. In some embodiments, the vehicle passing event is generated by an event that the license plate snapshot device takes a snapshot of the license plate and reports snapshot data.
In some embodiments, the passing event is generated based on license plate information.
In some embodiments, the passing events are generated from the snapshot data. The license plate snapshot equipment reports the snapshot data once every time, and the snapshot data can be used for analyzing license plate information and counting the number of passing vehicles.
It should be noted that the license plate capturing devices corresponding to the first database, the second database and the third database are the same.
The number of passing vehicles (traffic flow) of a certain license plate snapshot device can be obtained through the corresponding relation between the license plate snapshot device and the first database, the second database and the third database, and the number of passing vehicles (traffic flow) of a certain area or a certain intersection can be obtained because the setting position of each license plate snapshot device can be known, so that the accurate data base can be provided when traffic control and traffic flow dispersion are needed.
In some embodiments, the first database, the second database and the third database which are associated correspond to a plurality of license plate capturing devices, at this time, capturing data reported by each license plate capturing device correspondingly generates a vehicle passing event, and the first count, the second count and the third count correspond to the sum of the number of vehicles captured by each license plate capturing device.
In some embodiments, the vehicle passing event includes a snapshot time, and a temporary memory of the corresponding first count, second count and third count is created according to the snapshot time.
In some embodiments, the passing number storage method further includes:
respectively acquiring and recording first storage time of the first count stored in the first database, second storage time of the second count stored in the second database and third storage time of the third count stored in the third database.
By acquiring and recording the first storage time, the second storage time and the third storage time, the latest data updating time of the first database, the second database and the third database and the data acquisition time of each first count, second count and third count stored in the first database, the second database and the third database can be known.
In some embodiments, if the number of passing vehicles is stored in real time, that is, the license plate snapshot device takes a snapshot of the license plate in real time, generates a passing event in real time, adds 1 to the first, second, and third counts in real time, respectively stores the first, second, and third counts into the first, second, and third databases at intervals of the first, second, and third preset times, respectively, ignores the delay generated by the necessary operations such as calculation in the above process, and may respectively store the current times of the first, second, and third counts into the first, second, and third databases as the first, second, and third storage times of the first, second, and third counts.
In some embodiments, if the number of passing vehicles is stored and delayed, that is, the license plate snapshot device takes a snapshot of the license plate, generates a passing vehicle event, adds 1 to the first, second, and third counts, and stores the first, second, and third counts into the first, second, and third databases at intervals of the first, second, and third preset times, respectively, where the delay exists and cannot be ignored, the occurrence time of the corresponding passing vehicle event when the first, second, and third counts are maximum values, that is, the snapshot time when the first, second, and third counts are maximum values, is taken as the first, second, and third storage times, respectively.
In some embodiments, the passing number storage method further comprises at least one of:
the data structure of the first count includes year, month, day, hour, minute, second and the number of passing cars;
the data structure of the second count includes year, month, day, hour, minute, second and the number of passing cars;
the data structure of the third count includes year, month, day, hour, minute, second, and the number of passing cars.
In the data structure of the first count, the second data is 00; the data structures of the second count in minutes and seconds are both 00; the data structure of the third count is 00 for hour, minute, and second. The data structure of the first count is, for example, < 2020-04-3006:01:00, 17>, the data structure of the second count is, for example, < 2020-04-3005: 00:00,120>, and the data structure of the third count is, for example, < 2020-04-3000: 00:00,1369 >.
In some embodiments, the passing number storage method further includes:
and if the second counting is detected to be abnormal, acquiring the current time and the second storage time, determining a second counting lost time period according to the current time and the second storage time, determining a second counting lost number according to the second counting lost time period and each first counting stored in the first database, and taking the second counting lost number as a second counting.
When the first predetermined time comprises 1 minute, the second predetermined time comprises 1 hour, and the third predetermined time comprises 1 day, the first database comprises a minutes database, the second database comprises an hours database, and the third database comprises a days database, the first count comprises a minutes count, the second count comprises an hours count, and the third count comprises a days count. If the second counting is detected to be abnormal, the hour counting is lost and returns to zero, at this time, the current time is 20 minutes from 16 points at 9, 7 and 7 days in 2020, and the last second storage time is 16 points at 9, 7 and 7 days in 2020, the second counting loss period is from 16 points at 1 at 9, 7 and 7 days in 2020 to 20 minutes at 16 points at 9, 7 and 2020, the minute counting of which the first storage time is located in the second counting loss period in the minute database is obtained, and the total 19 minute counting of which the first storage time is located at 16 points at 1 at 7 and 7 days in 2020, 9, 7 and 16 points at 19 points at 9, 7 and 19 points at 19 times at 19 times at 16 points at 9, 7 and 2020 in 9 is obtained in the minute database, and the 19 minute counting is summed to be used as the second counting loss number, and the second counting loss number is used as the current new hour counting. It can be seen that if abnormal repair occurs in the hour count fast enough (within 1 minute), only the hour count of about 1 minute is lost, and the data accuracy is better in the abnormal condition by the vehicle passing number storage method provided by the embodiment of the invention.
In some embodiments, the passing number storage method further includes:
and if the third counting is detected to be abnormal, acquiring the current time and the third storage time, determining a third counting loss time period according to the current time and the third storage time, determining a third counting loss number according to each first counting stored in the first database, each second counting stored in the second database and the third counting loss time period, and taking the third counting loss number as a third counting.
In some embodiments, the indication of the second count or the third count abnormality includes, but is not limited to, an abnormal condition such as a crash, resulting in a loss of the second and third counts that are not stored in the second and third databases.
In some embodiments, after the first, second and third counts are stored in the first, second and third databases, respectively, the first, second and third counts are cleared, respectively, to be re-counted. For example, when the first count is 50 and the current time is 16 o' clock 20 points at 9/7/2020, the first count is stored in the first database in the following data format: < 2020-09-0716: 20:00,50> when the first count is initialized to 0 and then recounted. The initialization of the second and third counts is similar to the first count, and is not described herein again. When the first predetermined time comprises 1 minute, the second predetermined time comprises 1 hour, and the third predetermined time comprises 1 day, the first database comprises a minutes database, the second database comprises an hours database, and the third database comprises a days database, the first count comprises a minutes count, the second count comprises an hours count, and the third count comprises a days count. If the third counting is detected to be abnormal, the day counting is lost and returns to zero, at this time, the current time is 20 minutes from 16 points of 9/7/2020, the last third storage time is 0 point of 9/7/2020, the third counting loss time period is from 0 point of 9/7/2020 to 20 points of 16 points of 9/7/2020, the hour counts of the second storage time in the hour database located in the third counting loss time period are obtained first, the minute counts of the total 16 hours of the second storage time in the hour database located from 0 point of 9/7/2020 to 16 points of 9/7/2020, the minute counts of the first storage time in the minute database located in the second counting loss time period are obtained, and the last first storage time in the minute database is 19 minutes of 16 points of 9/7/2020, since the passing vehicle number from 0 point at 9/7/2020 to 16 point at 9/7/2020 is extracted from the hour database, at this time, only 19 minutes in total from 1 point at 16 point at 9/7/2020 to 19 point at 16 point at 9/7/2020 in the first storage time in the minute database need to be acquired, the 19 minutes counts and the 16 hours counts obtained in the above manner are summed to obtain a third count lost number, and the third count lost number is taken as the current new day count. It can be seen that if the day count is fast enough (within 1 minute) to recover from an abnormality, the loss is only about 1 minute, and the data accuracy is better in the abnormal situation by the vehicle passing number storage method provided by the embodiment of the invention.
In some embodiments, since the first database stores the first count every first predetermined time and stores the second count into the second database every second predetermined time, when the second count is lost, the lost data is substantially data of a second count lost period, wherein the second count lost period comprises a time since the last second storage time until the current time. At this time, the passing number storage may be continued by acquiring a sum of the respective first counts stored at the respective first storage times corresponding to the second count lost period as the second count lost number, and at this time, taking the second count lost number as the second count. Therefore, even if the second count which is not stored in the database is lost due to accidents, partial data can be retrieved through the data stored in the first database, and the data cannot be completely lost. Meanwhile, the first database is stored once without a first preset time interval, so that if the system is recovered fast enough, the lost data may be only the data within the latest first preset time, and by controlling the first preset time, the data loss amount of the data loss caused by accidents such as system crash can be controlled within the range acceptable by those skilled in the art.
For the data recovery after the third count loss, the above-mentioned second count loss data recovery logic may also be referred to, and is not described herein again. Similarly, if the third count is lost, the third count lost period may be determined according to the current time and the last third storage time, the second count corresponding to the third count lost period in the second database may be determined according to the last second storage time and the third count lost period, and the first count corresponding to the third count lost period in the first database may be determined according to the last first storage time, the last second storage time and the third count lost period, where the first count corresponding to the third count lost period in the first database is the first count between the last second storage time and the last first storage time. And further taking the third counting lost number as a third counting lost number according to the sum of the second counting and the first counting corresponding to the third counting lost time period as the third counting lost number. Similarly, if the system recovers fast enough, the lost data may be only the data within the latest first preset time, and by controlling the first preset time, the data loss amount of the data loss caused by the accident such as system crash can be controlled within the range that can be accepted by those skilled in the art.
In some embodiments, the first predetermined time comprises 1 minute, the second predetermined time comprises 1 hour, the third predetermined time comprises 1 day, the first database comprises a minutes database, the second database comprises an hours database, and the third database comprises a days database.
It should be noted that the first, second, and third preset times may be other longer or shorter times, and are not limited herein.
In some embodiments, the first, second, and third counts may be buffered in a predetermined memory or a predetermined buffer, which is not limited herein.
In some embodiments, the passing number storage method further includes:
acquiring a statistical time period, and decomposing the statistical time period into a statistical day, a statistical time and a statistical minute;
acquiring a third statistical count in a third database according to the statistical day, wherein the third statistical count comprises the sum of all third counts corresponding to the statistical day in the third database;
acquiring a second statistical count in a second database according to the statistical time, wherein the second statistical count comprises the sum of all second counts corresponding to the statistical time in the second database;
acquiring a first statistical count in a first database according to the statistical minutes, wherein the first statistical count comprises the sum of all first counts corresponding to the statistical minutes in the first database;
the number of passing vehicles in the statistical time period is equal to the sum of the first statistical count, the second statistical count and the third statistical count.
In some embodiments, the passing number storage method further includes:
when a first vehicle passing event is acquired, starting a timer, and triggering the timer once every 1 minute;
storing the first count into a first database each time the timer is triggered;
storing the second count into a second database every time the timer is triggered for 60 times;
every 1440 times the timer is triggered, a third count is stored in a third database.
The first, second and third counts can be triggered to be stored in the corresponding first, second and third databases according to the preset rule through the timing trigger of the timer.
In some embodiments, the method for storing the number of passing vehicles provided by the embodiment is applied to a vehicle flow counting platform, and the platform is provided with a plurality of collecting devices capable of collecting vehicle passing events such as license plate snapshot cameras.
A specific embodiment is provided below to exemplarily explain the above-described passing vehicle number storage method. A specific passing number storage method comprises the following steps:
s201: the license plate is afraid of the fact that the equipment reports the vehicle passing event.
In some embodiments, a license plate snapshot device, such as a license plate snapshot camera, is used for snapshot of a license plate of a passing vehicle, snapshot data is reported once every snapshot, license plate information can be obtained according to the snapshot data, and a vehicle passing event can be triggered according to the snapshot data.
In some embodiments, the snapshot data reported by the license plate snapshot device includes a camera ID and a reporting time.
For example, at a traffic intersection, a plurality of license plate snapshot cameras are installed. And reporting snapshot data once every time the license plate snapshot camera takes a snapshot. The snapshot data can be used for analyzing the license plate information and counting the number of the vehicles passing through.
S202: and acquiring a vehicle passing event.
S203: and 1 is added to the first count, the second count and the third count respectively.
Optionally, each time a vehicle passing event is acquired, 1 is added to the corresponding first, second, and third counts.
Presetting a first counting data structure S, a second counting data structure S and a third counting data structure S, wherein the data formats are as follows:
< time, number of passing cars >
In some embodiments, the first count is a minute count, the second count is an hour count, and the third count is a day count, and the data structure stored for the number of passing vehicles of a certain license plate capture device camera 1 at this time is as follows:
the data structure of the minute count of the camera 1 is for example < 2020-04-3006:01:00, 17>,
the data structure of the hour count of the camera 1 is for example < 2020-04-3005: 00:00,120>,
the data structure of the day count of the camera 1 is, for example, < 2020-04-3000: 00:00,1369 >.
In some embodiments, a first count, a second count and a third count corresponding to a license plate snapshot device triggering a vehicle passing event are found in a memory and are respectively marked as S _ Min, S _ Hour and S _ Day; adding 1 to the number of passing cars of the reporting time corresponding to S _ Min, S _ Hour and S _ Day respectively, for example, the reporting time is 2020-04-3006:01:00, adding 1 to the number of passing cars corresponding to 2020-04-3006:01:00 in S _ Min, adding 1 to the number of passing cars corresponding to 2020-04-3006: 00:00 in S _ Hour, and adding 1 to the number of passing cars corresponding to 2020-04-3000: 00:00 in S _ Day.
S204: a timer is started.
Optionally, the trigger time of the timer is 1 minute.
Optionally, a count value min _ num may also be set, which is initialized to 0, the timer is triggered once, the count value min _ num is incremented by 1, and the number of times of triggering the timer is represented by the count value. At this time, the method further includes:
s2041: the count value min _ num is incremented by 1 each time the timer is triggered.
S205: storing the first count into a first database each time the timer is triggered;
s206: judging whether the triggering frequency of the timer can be divided by 60, if so, executing S208;
s207: judging whether the triggering times of the timer can be divided by 1440, if yes, executing S209;
s208: storing the second count in a second database;
s209: storing the third count in a third database.
For example, after the timer is triggered at a time point of 2020-04-3006: 02:00, a first count of passing data for a minute of 2020-04-3006:01:00 is written to the first database, and an exemplary representation of the data in the first database can be found in table 1:
TABLE 1
| License plate snapshot device ID | First storage time | First count |
| 1 | 2020-04-30 00:01:00 | 10 |
| 1 | 2020-04-30 00:02:00 | 13 |
| 1 | 2020-04-30 00:03:00 | 9 |
Adding 1 to the count value min _ num, and dividing the count value min _ num by 60, if the remainder is 0, which indicates that 1 hour has passed since the last update, then recording a second count of the vehicle passing data of the last hour into a second database, where an exemplary representation of the data in the second database can be found in table 2:
TABLE 2
| License plate snapshot device ID | Second storage time | Second count |
| 1 | 2020-04-30 00:00:00 | 120 |
| 1 | 2020-04-30 01:00:00 | 131 |
| 1 | 2020-04-30 02:00:00 | 152 |
Dividing 1440 by the value min _ num if the remainder is 0, indicating that 1 day has elapsed since the last update, then a third count of the last day's vehicle data is entered into a third database, an exemplary representation of the data in the second database can be found in table 3:
TABLE 3
In some embodiments, the passing number storage method further includes:
taking the latest first, second and third storage time as updating time;
and respectively recording the updating time of the first database, the second database and the third database in an updating time database.
An exemplary representation of the update time database may be found in table 4:
TABLE 4
| License plate snapshot device ID | Database with a plurality of databases | Update time |
| 1 | A first database | 2020-04-30 06:01:00 |
| 1 | A second database | 2020-04-30 05:00:00 |
| 1 | A third database | 2020-04-30 00:00:00 |
Continuing to refer to tables 1, 2 and 3, if the number of passing vehicles in the statistical time period of 2020/04/3000: 00:00-01:00:00 is required to be inquired, the statistical time period is divided into statistical day 0, the second row of data 131 in table 2 is only required to be read when the zero point of 30 days of 4 months and 30 days of 2020 is counted and the minute 0 is counted, so that the inquiry is more convenient.
The embodiment of the invention provides a method for storing the number of passing vehicles, which is characterized in that 1 is respectively added to a first count, a second count and a third count every time a vehicle passing event is obtained, the first count is stored in a first database at intervals of a first preset time, the second count is stored in a second database at intervals of a second preset time, and the third count is stored in a third database at intervals of a third preset time.
Optionally, the first count is stored in the first database at intervals of a first preset time, the second count is stored in the second database at intervals of a second preset time, and the third count is stored in the third database at intervals of a third preset time, so as to realize the storage of the number of passing vehicles, if the second count is lost once a fault occurs, the update time of the second database can be read in time after the fault is eliminated, the second count lost period is determined by combining the current time, and all the first counts stored in the first database in the second count lost period according to the second count lost period are read and summed to be used as a new second count, so that the new second count only loses passing vehicle data within a time period from the latest first storage time of the first database to the current time compared with the actual second count, and the data loss is less, the accuracy is high. In addition, since the shortest time interval of storage is the first preset time, a person skilled in the art can control the storage frequency by setting the length of the first preset time, thereby improving the efficiency and reducing the resource consumption.
Optionally, the storage time of the first, second and third counts stored in the first, second and third databases is managed by the timer, so that the efficiency of storing the number of passing cars can be improved.
Optionally, the first preset time includes 1 minute, the second preset time includes 1 hour, the third preset time includes 1 day, at this time, the first count, the second count, and the third count in the first database, the second database, and the third database are stored based on the time interval of minutes, hours, and days, when the number of passing vehicles needs to be determined according to the statistical time period, the statistical time period may be disassembled into the statistical days, the statistical times, and the statistical minutes, then the third statistical count in the third database corresponding to the statistical days, the second statistical count in the second database corresponding to the statistical times, and the first statistical count corresponding to the statistical minutes are added to serve as the number of passing vehicles, so that when the number of passing vehicles in a certain statistical time period is queried, the query speed may be greatly improved, and the I/O and the operation may be reduced.
Example two
Referring to fig. 3, an embodiment of the present invention further provides a device 300 for storing a vehicle passing amount, including:
the vehicle passing event acquiring module 301 is configured to, each time a vehicle passing event is acquired, add 1 to the first count, add 1 to the second count, and add 1 to the third count;
a first storage module 302, configured to store a first count into a first database at intervals of a first preset time;
a second storage module 303, configured to store the second count into a second database at intervals of a second preset time;
and a third storage module 304, configured to store a third count into a third database at an interval of a third preset time, where the time lengths of the first preset time, the second preset time, and the third preset time are sequentially increased.
In some embodiments, the passing number storage device further comprises:
the snapshot data acquisition module is used for acquiring snapshot data reported by license plate snapshot equipment corresponding to the first database before the vehicle passing event acquisition module acquires a vehicle passing event, and the first count, the second count and the third count are respectively added by 1, wherein the snapshot data comprises license plate images;
the recognition module is used for recognizing the license plate image to obtain license plate information;
and the generation module is used for generating a vehicle passing event.
In this embodiment, the passing number storage device is substantially provided with a plurality of modules for executing the passing number storage method of the first embodiment, and specific functions and technical effects are as described in the first embodiment, which is not described herein again.
Referring to fig. 4, an embodiment of the present invention further provides a terminal 400, which includes a processor 401, a memory 402, and a communication bus 403;
a communication bus 403 is used to connect the processor 401 and the memory 402;
the processor 401 is configured to execute a computer program stored in the memory 402 to implement the passing number storage method according to any one of the above embodiments.
Embodiments of the present application also provide a non-transitory readable storage medium, where one or more modules (programs) are stored in the storage medium, and when the one or more modules are applied to a device, the device may execute instructions (instructions) included in an embodiment of the present application.
An embodiment of the present invention further provides a computer-readable storage medium, wherein a computer program is stored thereon, and the computer program is configured to enable a computer to execute the passing vehicle number storage method according to any one of the above embodiments.
It should be noted that the computer readable medium in the present disclosure can be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In contrast, in the present disclosure, a computer readable signal medium may comprise a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, optical cables, RF (radio frequency), etc., or any suitable combination of the foregoing.
The computer readable medium may be embodied in the electronic device; or may exist separately without being assembled into the electronic device.
Computer program code for carrying out operations for aspects of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (12)
1. A method for storing the number of passing cars is characterized by comprising the following steps:
adding 1 to the first count, the second count and the third count respectively every time a vehicle passing event is acquired;
storing the first count into a first database at intervals of a first preset time;
storing the second count into a second database at intervals of a second preset time;
and storing the third count into a third database at intervals of third preset time, wherein the time lengths of the first preset time, the second preset time and the third preset time are sequentially increased.
2. The method for storing the number of passing cars according to claim 1, wherein each time a car-passing event is acquired, before adding 1 to each of the first count, the second count, and the third count, further comprising:
acquiring snapshot data reported by license plate snapshot equipment corresponding to the first database, wherein the snapshot data comprises license plate images;
identifying the license plate image to obtain license plate information;
and generating a vehicle passing event.
3. The passing number storage method according to claim 1, further comprising:
and respectively acquiring and recording first storage time of the first count stored in a first database, second storage time of the second count stored in a second database and third storage time of the third count stored in a third database.
4. The passing number storage method according to claim 3, further comprising:
if the second counting is detected to be abnormal, the current time and the second storage time are obtained, a second counting lost time period is determined according to the current time and the second storage time, a second counting lost number is determined according to the second counting lost time period and each first counting stored in the first database, and the second counting lost number is used as the second counting.
5. The passing number storage method according to claim 3, further comprising:
if the third counting is detected to be abnormal, the current time and the third storage time are obtained, a third counting lost time period is determined according to the current time and the third storage time, a third counting lost number is determined according to the first counts stored in the first database, the second counts stored in the second database and the third counting lost time period, and the third counting lost number is used as the third count.
6. The passing number storage method according to any one of claims 1 to 5, wherein the first preset time includes 1 minute, the second preset time includes 1 hour, the third preset time includes 1 day, the first database includes a minute database, the second database includes an hour database, and the third database includes a day database.
7. The passing number storage method according to claim 6, further comprising:
acquiring a statistical time period, and decomposing the statistical time period into a statistical day, a statistical time and a statistical minute;
acquiring a third statistical count in the third database according to the statistical day, wherein the third statistical count comprises the sum of all the third counts corresponding to the statistical day in the third database;
acquiring a second statistical count in the second database according to the statistical timing, wherein the second statistical count comprises the sum of each second count corresponding to the statistical timing in the second database;
acquiring a first statistical count in the first database according to the statistical minutes, wherein the first statistical count comprises the sum of each first count corresponding to the statistical minutes in the first database;
and the number of passing vehicles in the statistical time period is equal to the sum of the first statistical count, the second statistical count and the third statistical count.
8. The passing number storage method according to claim 6, further comprising:
starting a timer when a first vehicle passing event is acquired, wherein the timer is triggered once every 1 minute;
storing the first count into a first database each time the timer is triggered;
storing the second count in a second database every 60 times the timer is triggered;
the timer stores the third count in a third database every 1440 times it is triggered.
9. A vehicle passing number storage device is characterized by comprising:
the vehicle passing event acquisition module is used for adding 1 to the first count, adding 1 to the second count and adding 1 to the third count every time a vehicle passing event is acquired;
the first storage module is used for storing the first count into a first database at intervals of first preset time;
the second storage module is used for storing the second count into a second database at intervals of second preset time;
and the third storage module is used for storing the third count into a third database at intervals of third preset time, and the time lengths of the first preset time, the second preset time and the third preset time are sequentially increased.
10. The passing number storage device according to claim 9, further comprising:
the snapshot data acquisition module is used for acquiring snapshot data reported by license plate snapshot equipment corresponding to the first database before the vehicle passing event acquisition module acquires a vehicle passing event, and the first count, the second count and the third count are respectively added by 1, wherein the snapshot data comprises license plate images;
the recognition module is used for recognizing the license plate image to obtain license plate information;
and the generation module is used for generating a vehicle passing event.
11. A terminal comprising a processor, a memory, and a communication bus;
the communication bus is used for connecting the processor and the memory;
the processor is configured to execute the computer program stored in the memory to implement the passing number storage method according to any one of claims 1 to 8.
12. A computer-readable storage medium, characterized in that a computer program for causing a computer to execute the passing number storage method according to any one of claims 1 to 8 is stored thereon.
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