CN107067763B - Parking lot entrance and exit switching method and device - Google Patents

Abstract

The invention discloses a method for switching the entrance and exit of a parking lot. After collecting the vehicle queue length and vehicle flow at the entrance and exit by monitoring the front-end, determine the congestion degree value and congestion trend value of the entrance and exit according to the vehicle queue length and vehicle flow, and determine the switching state of the entrance and exit based on the congestion degree value and the congestion trend value. When the vehicle queuing length at the entrance and exit exceeds the preset length upper limit threshold, the entrance and exit for switching can be selected according to the vehicle queuing length at other entrances and exits, the vehicle flow and the switching state, and accordingly, prompt information is sent to vehicles outside the entrance and exit. Therefore, it can be flexibly switched according to the actual situation of each entrance and exit, and the turnover efficiency of the entrance and exit of the parking lot can be improved on the premise of not affecting the order of vehicle entry and exit.

Description

A kind of parking lot entrance and exit switching method and device

technical field

The invention relates to the field of communication technologies, and in particular, to a method for switching between entrances and exits of a parking lot. The invention also relates to a switching device for the entrance and exit of a parking lot.

Background technique

With the development of society, more and more people own private cars, and the parking lot has become a necessary facility. In order to cope with the increasing demand, the management efficiency of the parking lot must be improved. On the other hand, the development of technology has also made unattended solutions possible, which can greatly improve the efficiency and throughput of parking lot management.

As an important part of the parking lot, the operation efficiency of the entrance and exit occupies an important position. Although the prior art adopts intelligent means to adjust and optimize entrances and exits, the management of entrances and exits is still lacking. A typical multi-entry parking lot is often used for vehicle entry and exit time periods. For example, a shopping mall generally has a large number of vehicles entering in the morning and a large number of vehicles leaving in the afternoon. Since the exit and entrance of the parking lot are fixed, the traffic flow at the entrance is large when driving in, which is prone to queue congestion, while the exit is basically empty, and vice versa.

In order to solve this problem, in the prior art, the traffic flow is dredged by collecting the incoming or outgoing flow of each entrance and exit, combined with the guidance control signal. However, in the process of realizing the present application, the inventor found that this solution only uses the entrance and exit flow (the number of vehicles leaving or entering in a period of time) as a decision basis, which is not sufficient, because the entrance and exit flow cannot accurately measure the busy and congested state of the entrance and exit. For example, when a certain exit arrives just after the next vehicle just after the previous vehicle has been processed, the flow of the exit has reached a peak; when another exit is also processed, there will be one vehicle immediately after processing a vehicle. Vehicles arrive, but the exit may not pass smoothly for a long time due to blockage, so the flow value may be small. Solutions according to the prior art may mistakenly believe that the outlet is more blocked than the inlet.

In addition, the above-mentioned prior art solution directly sets the number of entrances and exits, and does not have a transition state, that is, the switching strategy of the entrances and exits is relatively rough, which may easily lead to a chaotic state.

It can be seen that how to improve the turnover efficiency of the entrance and exit of the parking lot without affecting the order of vehicle entry and exit has become a technical problem to be solved urgently by those skilled in the art.

SUMMARY OF THE INVENTION

The invention provides a method for switching the entrance and exit of a parking lot, which is used to flexibly switch the entrance and exit according to the actual number of vehicles and the flow, so as to solve the problem that the parking lot with multiple entrances and exits in the prior art is prone to congestion, and improve the operation of the parking lot. efficiency. The method is applied to a management system of a parking lot with multiple entrances and exits, the entrances and exits of the parking lot are provided with monitoring front ends, and the method includes:

Collect the vehicle queuing length and vehicle flow at the entrance and exit through the monitoring front end;

The congestion degree value and the congestion trend value of the entrance and exit are determined according to the vehicle queuing length and the vehicle flow, the congestion degree value is positively correlated with the vehicle queuing length and the vehicle flow, and the congestion trend value is determined according to the The congestion level value is generated;

Determine the switching state of the entrance and exit according to the congestion degree value and the congestion trend value;

When the vehicle queuing length of the entrance and exit exceeds the preset length upper limit threshold, select the entrance and exit for switching according to the vehicle queuing length, vehicle flow and switching state of other entrances and exits, and after determining the entrance and exit for switching Vehicles outside the entrance and exit send prompt information.

Preferably, the switching state of the entrance and exit is determined according to the congestion degree value and the congestion trend value, specifically:

When the congestion level value is greater than a preset congestion upper limit threshold, setting the entrance and exit to a non-switchable attribute state;

When the congestion trend value is a positive value, setting the entrance and exit to a non-switchable attribute state;

When the congestion degree value is not greater than the congestion lower limit threshold, setting the entrance and exit to a switchable attribute state;

When the congestion degree value is not greater than the congestion upper limit threshold and larger than the congestion lower limit threshold, and the congestion trend value is a negative value, set the entrance and exit to the attribute state to be switched, and obtain the attribute switching of the entrance and exit time.

Preferably, the entrance and exit for switching are selected according to the vehicle queuing length, vehicle flow and switching conditions of other entrances and exits, specifically:

Use other entrances and exits whose vehicle queuing length is lower than the preset length lower limit threshold as switching alternative entrances and exits;

The switching candidate entrances and exits are arranged in the order of vehicle flow from small to large, and the switching candidate entrances and exits are selected in sequence according to the switching states of the switching candidate entrances and exits.

Preferably, the gateway for switching is selected according to the switching state of the switching candidate gateway in sequence, specifically:

If there is an alternative entry and exit of the switchable attribute state, the alternative entry and exit of the first switchable attribute state is used as the entry and exit for switching;

If there is no alternative entry and exit for the switchable attribute state, the alternative entry and exit with the least switching time of the attribute is used as the entry and exit for switching;

If there are only alternative entrances and exits of the non-switchable attribute state, report congestion alarm information to the management system.

Preferably, after the entrance and exit for switching are determined, prompt information is sent to vehicles outside the entrance and exit, specifically:

Send a switching prompt corresponding to the gate for switching through the guidance device of the management system, and prohibit new vehicles from entering the gate;

After the remaining vehicles at the entrance and exit are processed, other vehicles are prompted to go to the entrance and exit for switching through the guidance device.

Correspondingly, the present application also proposes a parking lot entrance and exit switching device, which is applied to a management system of a parking lot with multiple entrances and exits. The entrance and exit of the parking lot is provided with a monitoring front end, and the device includes:

a collection module, which collects the vehicle queuing length and vehicle flow at the entrance and exit through the monitoring front end;

a first determination module, for determining a congestion degree value and a congestion trend value of the entrance and exit according to the vehicle queuing length and the vehicle flow, where the congestion degree value is positively correlated with the vehicle queuing length and the vehicle flow, and the The congestion trend value is generated according to the congestion degree value;

a second determining module, for determining the switching state of the entrance and exit according to the congestion degree value and the congestion trend value;

The selection module, when the vehicle queuing length at the entrance and exit exceeds the preset length upper limit threshold, selects the entrance and exit for switching according to the vehicle queuing length, vehicle flow and switching state of other entrances and exits, and determines the entrance and exit for switching. Afterwards, prompt information is sent to vehicles outside the entrance and exit.

Preferably, the second determining module is specifically used for:

When the congestion level value is greater than a preset congestion upper limit threshold, setting the entrance and exit to a non-switchable attribute state;

When the congestion degree value is not greater than the congestion upper limit threshold, and the congestion trend value is a positive value, setting the entrance and exit to a non-switchable attribute state;

When the congestion degree value is not greater than the congestion lower limit threshold, setting the entrance and exit to a switchable attribute state;

When the congestion degree value is not greater than the congestion upper limit threshold, and is larger than the congestion lower limit threshold, and the congestion trend value is a negative value, set the entrance and exit to an attribute state to be switched, and obtain the attributes of the entrance and exit switch time.

Preferably, the selection module is specifically used for:

Use other entrances and exits whose vehicle queuing length is lower than the preset length lower limit threshold as switching alternative entrances and exits;

The switching candidate entrances and exits are arranged in the order of vehicle flow from small to large, and the switching candidate entrances and exits are selected in sequence according to the switching states of the switching candidate entrances and exits.

Preferably, the selection module selects the entrance and exit for switching according to the switching state of the switching candidate entrance and exit in sequence, specifically:

If there is an alternative entry and exit of the switchable attribute state, the alternative entry and exit of the first switchable attribute state is used as the entry and exit for switching;

If there is no alternative entry and exit for the switchable attribute state, the alternative entry and exit with the least switching time of the attribute is used as the entry and exit for switching;

If there are only alternative entrances and exits of the non-switchable attribute state, report congestion alarm information to the management system.

Preferably, the selection module sends prompt information to vehicles outside the entrance and exit after determining the entrance and exit for switching, specifically:

Send a switching prompt corresponding to the gate for switching through the guidance device of the management system, and prohibit new vehicles from entering the gate;

After the remaining vehicles at the entrance and exit are processed, other vehicles are prompted to go to the entrance and exit for switching through the guidance device.

It can be seen that, by applying the technical solution of the present application, after collecting the vehicle queuing length and vehicle flow at the entrance and exit by monitoring the front end, the congestion degree value and the congestion trend value of the entrance and exit are determined according to the vehicle queuing length and vehicle flow, and based on the congestion degree value and The congestion trend value determines the switching state of the entrance and exit, so that when the vehicle queuing length at the entrance and exit exceeds the preset length upper limit threshold, the entrance and exit for switching can be selected according to the vehicle queuing length, vehicle flow and switching state of other entrances and exits. Vehicles outside the entrance and exit send reminder information. Therefore, it can be flexibly switched according to the actual situation of each entrance and exit, and the turnover efficiency of the entrance and exit of the parking lot can be improved on the premise of not affecting the order of vehicle entry and exit.

Description of drawings

Fig. 1 is a schematic diagram of the life cycle of the passing traffic flow at the entrance and exit of a parking lot in the prior art;

FIG. 2 is a schematic diagram of the life cycle of passing vehicles at tidal entrances and exits in a specific embodiment of the application;

FIG. 3 is a schematic flowchart of a method for switching a parking lot entrance and exit proposed by an embodiment of the application;

FIG. 4 is a schematic diagram of a tidal entrance and exit deployment scheme in a specific embodiment of the application;

FIG. 5 is a schematic diagram of a tidal entrance and exit scheme in a specific embodiment of the application;

FIG. 6 is a schematic diagram of a tidal inlet and outlet switching scheme in a specific embodiment of the present application;

FIG. 7 is a schematic structural diagram of a parking lot entrance and exit switching device according to an embodiment of the present application.

Detailed ways

As described in the background art, the existing parking lot management solutions are inefficient and based on a single judgment, which can easily lead to congestion during peak traffic times. However, in the process of realizing the present application, the inventor found that, for a certain entrance and exit in a parking lot with multiple entrances and exits, its congestion and busy state often show periodic changes as shown in FIG. 1 . Because for a multi-entry parking lot with N entrances and exits, not all entrances and exits are in the same state at a certain time. When a certain entrance is in a congested state, another entrance may be in an idle state. At this time, the attributes of the congested entrances and exits can be switched from exits to entrances (or from entrances to exits), and vehicles at the congested entrances and exits can be guided to the switched entrances and exits to increase the turnover efficiency of the entrances and exits, as shown in Figure 2.

Based on the above inventive concept, the present application proposes a method for switching the entrance and exit of a parking lot. The method analyzes the traffic flow at the entrance and exit from multiple angles through various detection methods, so as to determine whether the entrance and exit need to be switched, and optimize the switching strategy of the entrance and exit to achieve Maximize the use of entrances and exits to improve the overall vehicle turnover efficiency of the parking lot.

As shown in FIG. 3 , a schematic flowchart of a method for switching between entrances and exits of a parking lot proposed by the application includes the following steps:

S301, collect the vehicle queue length and vehicle flow at the entrance and exit through the monitoring front end.

Since the present application is to analyze the traffic flow at the entrance and exit of the parking lot from multiple angles, for a parking lot with multiple entrances and exits, before implementing the steps of the present application, the present application first sets up a monitoring front end at the entrance and exit, and the monitoring front end is used to collect The vehicle queue length and vehicle flow at the entrance and exit, in a specific application scenario, the setting method of the congestion monitoring camera as the monitoring front end at the entrance and exit of the parking lot can be shown in Figure 4. On the premise that the vehicle queuing length and vehicle flow at the entrance and exit can be collected, the specific device type and setting method do not affect the protection scope of this application.

S302: Determine a congestion degree value and a congestion trend value of the entrance and exit according to the vehicle queuing length and the vehicle flow, where the congestion trend value is a derivative of the congestion degree value.

Based on the vehicle queuing length and vehicle flow collected in S301, the technical solution of the present application generates a congestion degree value used to describe the congestion situation of the entrance and exit through the processing scheme, and the congestion degree value is positively related to the vehicle queuing length and the vehicle flow. The correlation can be obtained by the technician according to the specified algorithm. The larger the congestion level value, the more congested the entrance and exit.

In specific application scenarios, technicians can perform function fitting on the vehicle queuing length and vehicle flow collected by the front-end equipment, and on this basis, obtain a congestion degree value that is positively related to the vehicle queuing length and vehicle flow. In other embodiments, technicians can take other means to deal with the vehicle queuing length and vehicle flow, and these improvements and modifications all fall within the scope of protection of the present application.

On this basis, the present application further generates the congestion trend value of the entrance and exit according to the congestion degree value. The congestion trend value reflects whether the congestion situation of the entrance and exit is further intensified or gradually changed. In order to reflect the congestion trend with a clear numerical value, the preferred embodiment of the present application performs function fitting for the congestion degree value within a period of time, and in the On this basis, function derivation is performed to determine the congestion trend value. In this preferred embodiment, when the congestion trend value is a positive value, it means that the degree of congestion at the entrance and exit is increasing; and when the congestion trend value is a negative value, It shows that the congestion level of the entrance and exit tends to ease.

It should be pointed out here that although the above-mentioned embodiment of the present application determines the congestion level value of the entrance and exit based on the vehicle queuing length and the vehicle flow collected by the front-end device, the present invention determines the congestion level value based on the information collected by the front-end device. It is not limited to this. For example, technicians can collect the passing time of each vehicle through the front-end equipment, and then determine the congestion level value of the entrance and exit. The function of the front-end equipment and the information that can be collected can determine the congestion. Under the premise of the degree value, the improvements made by the technical personnel all belong to the protection scope of the present application.

S303: Determine the switching state of the entrance and exit according to the congestion degree value and the congestion trend value.

Because the present application aims to provide a multi-directional congestion judgment mechanism by adding a congestion monitoring camera, so as to make an accurate judgment for the switching of the entrance and exit of the parking lot. After obtaining the congestion degree value and the congestion trend value through S302, the present application assigns different switching states to each entrance and exit based on these two values, thereby providing a basis for switching of other entrances and exits.

In a preferred embodiment of the present application, the switching state includes a non-switchable attribute state, a to-be-switched attribute state, and a switchable attribute state. The following describes the judgment methods of each state separately:

The non-switchable attribute state indicates that the entrance is currently in a congested state or is about to be congested. Therefore, the entrance and exit are currently not allowed to be switched. The non-switchable attribute state is determined as follows:

(1) When the congestion degree value is greater than a preset congestion upper limit threshold, set the entrance and exit to a non-switchable attribute state.

(2) When the congestion degree value is not greater than the congestion upper limit threshold, and the congestion trend value is a positive value, set the entrance and exit to a non-switchable attribute state.

The status of the property to be switched indicates that the congestion at the entrance and exit is gradually easing, but there are still unprocessed vehicles, so it can be switched after a period of time. The determination of the status of the property to be switched is as follows:

(3) When the congestion degree value is not greater than the congestion upper limit threshold, and is larger than the congestion lower limit threshold, and the congestion trend value is a negative value, set the entrance and exit to the attribute state to be switched, and obtain the The attribute switching time of the entrance and exit.

The switchable attribute state indicates that the entrance is currently in a completely uncongested state (or idle state), and can be switched immediately. The switchable attribute state is determined as follows:

(4) When the congestion degree value is not greater than the congestion lower limit threshold, set the entrance and exit to a switchable attribute state.

It should be noted that although the above preferred embodiment has been described in terms of three different entrance and exit states, this is only a preferred embodiment proposed in this application. Under the premise that other improvements or classification methods fall within the protection scope of this application.

S304, when the vehicle queuing length at the entrance and exit exceeds the preset length upper limit threshold, select the entrance and exit for switching according to the vehicle queuing length, vehicle flow and switching state of other entrances and exits, and after determining the entrance and exit for switching Send reminder information to vehicles outside the entrance and exit.

As mentioned above, the technical solution of the present application uses monitoring equipment (such as a congestion monitoring camera) to simultaneously detect the vehicle queue length and vehicle flow (that is, the number of vehicles passing through the monitoring area per unit time), and determines the vehicle queue length and vehicle flow and the switching state. Whether the portal can switch attributes, and determine whether the portal can switch attributes of other portals to reduce the workload of the portal.

In a preferred embodiment of the present application, when the vehicle queuing length of a certain entrance and exit exceeds the preset length upper limit threshold, the management system determines that it is necessary to switch the attributes of other entrances and exits to reduce the congestion of the entrance and exit, and prompts a message by means of a message. Avoid the inconvenience caused by the vehicle not knowing the switch of the entrance and exit.

Since the switching state of each entrance and exit has been judged in the previous steps, this step specifically implements the selection of the entrance and exit that needs to be switched in the following ways:

Step a) Use other entrances and exits whose vehicle queuing length is lower than the preset length lower limit threshold as switching alternative entrances and exits;

Step b) Arranging the switching candidate entrances and exits in order of vehicle flow from small to large, and selecting the switching candidate entrances and exits in sequence according to the switching states of the switching candidate entrances and exits.

Based on the three different switching states determined in S303, in this step, when selecting the gate for switching according to the switching states of the switching candidate gates in turn, screening is performed according to the following conditions:

(1) If there is an alternative entry and exit of the switchable attribute state, the alternative entry and exit of the first switchable attribute state is used as the entry and exit for switching;

(2) If there is no alternative entrance and exit of the switchable attribute state, the alternative entrance and exit with the least switching time of the attribute is used as the entrance and exit for switching;

(3) If there are only alternative entrances and exits of the non-switchable attribute state, report congestion alarm information to the management system.

The above selection scheme is to make a preliminary screening based on the length of the vehicle queue, and then further select the appropriate entrance and exit for switching based on the vehicle flow and switching status. Correspondingly, the above solution is also a preferred embodiment proposed by this application. On this basis, the skilled person can improve the judgment method or judgment condition, which all belong to the protection scope of the present application.

The above scheme determines the switching timing by using the vehicle queuing length and vehicle flow. Further, for the entrances and exits to be switched, the preferred embodiment of the present application enables smooth switching of the entrances and exits based on the attribute switching time, so that the sudden switching will not cause conflicts between entering and exiting vehicles. The way is as follows:

Step a) sending a switching prompt corresponding to the entrance and exit for switching through the guidance device of the management system, and prohibiting new vehicles from entering the entrance and exit;

Step b) After processing the remaining vehicles at the entrance and exit, prompt other vehicles to go to the entrance and exit for switching through the guidance device.

By applying the above technical solutions, after collecting the vehicle queue length and vehicle flow at the entrance and exit by monitoring the front end, the congestion degree value and congestion trend value of the entrance and exit are determined according to the vehicle queue length and vehicle flow rate, and based on the congestion degree value and the congestion trend value, the entrance and exit values are determined. Switch state, so that when the vehicle queuing length at the entrance and exit exceeds the preset length upper limit threshold, the entrance and exit for switching can be selected according to the vehicle queuing length of other entrances and exits, the vehicle flow and the switching state. The vehicle sends a reminder message. Therefore, it can be flexibly switched according to the actual situation of each entrance and exit, and the turnover efficiency of the entrance and exit of the parking lot can be improved on the premise of not affecting the order of vehicle entry and exit.

In order to further illustrate the technical idea of the present invention, the technical solution of the present invention will now be described with reference to the specific solution architecture diagram shown in FIG. 5 . In order to better illustrate the scheme, for a multi-entry parking lot, define each entrance _xi with the following attributes:

P, indicating whether the entrance is an entrance or an entrance;

S, indicating the congestion level of the entrance and exit;

V, indicating the trend of the entrance and exit to congestion;

C, indicating the switching state, that is, how long it is before switching;

Among them, the values of S and V are collected by the monitoring equipment of the parking lot management system to evaluate the current state of the entrance and exit; while P and C are obtained by the system according to the state of the entrance and exit. After obtaining the above data for a period of time, the life cycle of the tidal entrance and exit is shown in Figure 6.

On the basis of FIG. 6 , this specific embodiment proposes a specific implementation strategy for ingress and egress switching, which is as follows:

When the entrance and exit _xi are gradually congested, that is, S continues to increase, and V is a positive value, it is not suitable to switch the attribute P;

When _xi is loaded, that is, when S exceeds a certain congestion threshold SF, it cannot switch attribute P;

When _xi is gradually idle, that is, when S continues to decrease and V is negative, you can consider establishing a plan for switching attribute P, changing attribute C, and confirming how long it will take to switch;

The attribute P can be switched when _xi is idle, ie, when S is below a certain congestion threshold SE.

It should be pointed out that, in the above specific embodiment, on the one hand, a congestion monitoring camera is deployed in the queuing area of the entrance and exit to collect the congestion situation; After acquiring the data collected by each camera, the parking lot management system updates the attributes S and V of each entrance _xi in real time according to the data collected by the congestion monitoring cameras. It should be noted here that S is determined by the queue length L and the flow F together. , V is the first derivative of S.

The above strategy describes whether a certain entrance and exit can be used to switch when other entrances and exits are congested to relieve the pressure of the congested entrances and exits. The following specific embodiments illustrate how to select other entrances and exits when a certain entrance is congested:

For a certain entrance x _i , when the queue length L exceeds the threshold L_Max, the system considers that this entrance is already loaded and needs to consider switching the attribute P of other entrances and exits x _j to reduce the workload of this entrance. In this embodiment, the management system searches for the entrance x _j in the following way:

Step a) Judging whether other entrances and exits can switch the attribute P according to the increase of the queue length, when the queue length L is lower than the threshold L_Min, this entrance and exit is regarded as an optional item, and is put into the alternative set {x _j | P _j ≠P _i ,L _j <L_Min,j∈N};

C₀是单位时间计算切换时间C；Step b) In the alternative scheme, select the entrance and exit with the smallest flow F as the option, and judge whether the entrance and exit can be selected in combination with the switching state of the entrance and exit. For the entrance and exit of the attribute state to be switched, the specific embodiment of the present application adopts

C ₀ is the calculation switching time C per unit time;

After finding a suitable entrance and exit for switching through the above steps, the present embodiment modifies the attributes P _j and C _j of x _j and displays them through the guiding device. Inform the driver that the entrance and exit will be switched to the entrance and exit after a certain period of time, and new vehicles are prohibited from entering. When the remaining vehicles are processed, switch the guide device to inform other drivers that the entrance and exit have been switched. At the same time, the driver is prompted at the entrance and exit x _i Go to exit x _j and get in.

The solutions of the above specific embodiments determine whether the entrance and exit are in a busy state by collecting the entrance and exit congestion data, thereby coordinating other entrances and exits for drainage and increasing the turnover efficiency of the entrances and exits. At the same time, the switching timing is determined by using the queue length and traffic flow, and the switching time is given, so that the entrance and exit can be switched smoothly, and the sudden switching will not cause conflicts between entering and exiting vehicles.

In order to achieve the above technical purpose, the present application also proposes a parking lot entrance and exit switching device, which is applied to the management system of a parking lot with multiple entrances and exits. The entrance and exit of the parking lot are provided with monitoring front ends. As shown in FIG. include:

The collection module 710 collects the vehicle queuing length and vehicle flow at the entrance and exit through the monitoring front end;

The first determination module 720 determines a congestion degree value and a congestion trend value of the entrance and exit according to the vehicle queuing length and the vehicle flow, where the congestion degree value is positively correlated with the vehicle queuing length and the vehicle flow, so The congestion trend value is generated according to the congestion degree value;

A second determination module 730, for determining the switching state of the entrance and exit according to the congestion degree value and the congestion trend value;

The selection module 740, when the vehicle queuing length at the entrance and exit exceeds the preset length upper limit threshold, selects the entrance and exit for switching according to the vehicle queuing length at other entrances and exits, the vehicle flow and the switching state, and after determining the vehicle queuing for switching. After the entrance and exit, prompt information is sent to vehicles outside the entrance and exit.

In a specific application scenario, the second determining module is specifically used for:

When the congestion level value is greater than a preset congestion upper limit threshold, setting the entrance and exit to a non-switchable attribute state;

When the congestion degree value is not greater than the congestion upper limit threshold, and the congestion trend value is a positive value, setting the entrance and exit to a non-switchable attribute state;

When the congestion degree value is not greater than the congestion lower limit threshold, setting the entrance and exit to a switchable attribute state;

When the congestion degree value is not greater than the congestion upper limit threshold, and is larger than the congestion lower limit threshold, and the congestion trend value is a negative value, set the entrance and exit to an attribute state to be switched, and obtain the attributes of the entrance and exit switch time.

In a specific application scenario, the selection module is specifically used for:

Use other entrances and exits whose vehicle queuing length is lower than the preset length lower limit threshold as switching alternative entrances and exits;

The switching candidate entrances and exits are arranged in the order of vehicle flow from small to large, and the switching candidate entrances and exits are selected in sequence according to the switching states of the switching candidate entrances and exits.

In a specific application scenario, the selection module selects the entrance and exit for switching according to the switching state of the switching candidate entrance and exit in sequence, specifically:

If there is an alternative entry and exit of the switchable attribute state, the alternative entry and exit of the first switchable attribute state is used as the entry and exit for switching;

If there is no alternative entry and exit for the switchable attribute state, the alternative entry and exit with the least switching time of the attribute is used as the entry and exit for switching;

If there are only alternative entrances and exits of the non-switchable attribute state, report congestion alarm information to the management system.

In a specific application scenario, the selection module sends prompt information to vehicles outside the entrance and exit after determining the entrance and exit for switching, specifically:

Send a switching prompt corresponding to the gate for switching through the guidance device of the management system, and prohibit new vehicles from entering the gate;

After the remaining vehicles at the entrance and exit are processed, other vehicles are prompted to go to the entrance and exit for switching through the guidance device.

By applying the technical solution of the present application, after collecting the vehicle queue length and vehicle flow at the entrance and exit by monitoring the front end, the congestion degree value and the congestion trend value of the entrance and exit are determined according to the vehicle queue length and the vehicle flow rate, and determined based on the congestion degree value and the congestion trend value. The switching state of the entrance and exit, so that when the vehicle queuing length at the entrance and exit exceeds the preset length upper limit threshold, the entrance and exit for switching can be selected according to the vehicle queuing length, vehicle flow and switching state of other entrances and exits. Other vehicles send reminder messages. Therefore, it can be flexibly switched according to the actual situation of each entrance and exit, and the turnover efficiency of the entrance and exit of the parking lot can be improved on the premise of not affecting the order of vehicle entry and exit.

From the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by hardware, and can also be implemented by means of software plus a necessary general hardware platform. Based on this understanding, the technical solution of the present invention can be embodied in the form of a software product, and the software product can be stored in a non-volatile storage medium (which may be CD-ROM, U disk, mobile hard disk, etc.), including several The instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in various implementation scenarios of the present invention.

Those skilled in the art can understand that the accompanying drawing is only a schematic diagram of a preferred implementation scenario, and the modules or processes in the accompanying drawing are not necessarily necessary to implement the present invention.

Those skilled in the art can understand that the modules in the device in the implementation scenario may be distributed in the device in the implementation scenario according to the description of the implementation scenario, or may be located in one or more devices different from the implementation scenario with corresponding changes. The modules of the above implementation scenarios may be combined into one module, or may be further split into multiple sub-modules.

The above serial numbers of the present invention are only for description, and do not represent the pros and cons of the implementation scenarios.

The above disclosures are only a few specific implementation scenarios of the present invention, however, the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims (8)

1. a parking lot entrance and exit switching method, is applied to the management system of the parking lot with multiple entrances and exits, it is characterized in that, the entrance and exit of described parking lot is provided with monitoring front end, and this method comprises: Collect the vehicle queuing length and vehicle flow at the entrance and exit through the monitoring front end; The congestion degree value and the congestion trend value of the entrance and exit are determined according to the vehicle queuing length and the vehicle flow, the congestion degree value is positively correlated with the vehicle queuing length and the vehicle flow, and the congestion trend value is determined according to the The congestion level value is generated; The switching state of the entrance and exit is determined according to the congestion degree value and the congestion trend value, wherein the switching state of the entrance and exit is determined according to the congestion degree value and the congestion trend value, specifically: When the congestion level value is greater than a preset congestion upper limit threshold, setting the entrance and exit to a non-switchable attribute state; When the congestion trend value is a positive value, setting the entrance and exit to a non-switchable attribute state; When the congestion degree value is not greater than the congestion lower limit threshold, set the entrance and exit to a switchable attribute state; When the congestion degree value is not greater than the congestion upper limit threshold and larger than the congestion lower limit threshold, and the congestion trend value is a negative value, set the entrance and exit to an attribute state to be switched, and obtain the attribute switching of the entrance and exit time; When the vehicle queuing length of the entrance and exit exceeds the preset length upper limit threshold, select the entrance and exit for switching according to the vehicle queuing length, vehicle flow and switching state of other entrances and exits, and after determining the entrance and exit for switching Vehicles outside the entrance and exit send prompt information. 2. The method according to claim 1, wherein the entrance and exit for switching are selected according to the vehicle queuing length, vehicle flow and switching conditions of other entrances and exits, specifically: Use other entrances and exits whose vehicle queuing length is lower than the preset length lower limit threshold as switching alternative entrances and exits; The switching candidate entrances and exits are arranged in the order of vehicle flow from small to large, and the switching candidate entrances and exits are selected in sequence according to the switching states of the switching candidate entrances and exits. 3. The method according to claim 2, characterized in that, selecting the entrance and exit for switching according to the switching state of the switching candidate entrance and exit in sequence, specifically: If there is a switching candidate entry and exit of the switchable attribute state, the first switching alternative entry and exit of the switchable attribute state is used as the entry and exit for switching; If there is no alternative switching entry and exit for the switchable attribute state, the alternative switching entry and exit with the least switching time of the attribute is used as the entry and exit for switching; If there is only a switching candidate entrance and exit of the non-switchable attribute state, the congestion alarm information is reported to the management system. 4. The method according to claim 3, wherein after determining the entrance and exit for switching, sending prompt information to vehicles outside the entrance and exit, specifically: Send a switching prompt corresponding to the gate for switching through the guidance device of the management system, and prohibit new vehicles from entering the gate; After the remaining vehicles at the entrance and exit are processed, other vehicles are prompted to go to the entrance and exit for switching through the guidance device. 5. A parking lot entrance and exit switching device, which is applied to a management system of a parking lot with multiple entrances and exits, wherein the entrance and exit of the parking lot is provided with a monitoring front end, and the device comprises: a collection module, which collects the vehicle queuing length and vehicle flow at the entrance and exit through the monitoring front end; A first determination module, for determining a congestion degree value and a congestion trend value of the entrance and exit according to the vehicle queuing length and the vehicle flow, where the congestion degree value is positively correlated with the vehicle queuing length and the vehicle flow, and the The congestion trend value is generated according to the congestion degree value; The second determination module determines the switching state of the entrance and exit according to the congestion degree value and the congestion trend value, wherein the second determination module is specifically used for: When the congestion level value is greater than a preset congestion upper limit threshold, setting the entrance and exit to a non-switchable attribute state; When the congestion degree value is not greater than the congestion upper limit threshold, and the congestion trend value is a positive value, setting the entrance and exit to a non-switchable attribute state; When the congestion degree value is not greater than the congestion lower limit threshold, set the entrance and exit to a switchable attribute state; When the congestion level value is not greater than the congestion upper limit threshold value and is larger than the congestion lower limit threshold value, and the congestion trend value is a negative value, set the entrance and exit to an attribute state to be switched, and obtain the attributes of the entrance and exit switching time; The selection module, when the vehicle queuing length at the entrance and exit exceeds the preset length upper limit threshold, selects the entrance and exit for switching according to the vehicle queuing length, vehicle flow and switching state of other entrances and exits, and determines the entrance and exit for switching. Afterwards, prompt information is sent to vehicles outside the entrance and exit. 6. The apparatus of claim 5, wherein the selection module is specifically configured to: Use other entrances and exits whose vehicle queuing length is lower than the preset length lower limit threshold as switching alternative entrances and exits; The switching candidate entrances and exits are arranged in an order from small to large vehicle flow, and the switching candidate entrances and exits are selected in sequence according to the switching states of the switching candidate entrances and exits. 7. The apparatus according to claim 6, wherein the selection module selects the entrance and exit for switching according to the switching state of the switching candidate entrance and exit in sequence, specifically: If there is a switching candidate entry and exit of the switchable attribute state, the first switching alternative entry and exit of the switchable attribute state is used as the entry and exit for switching; If there is no alternative switching entry and exit for the switchable attribute state, the alternative switching entry and exit with the least switching time of the attribute is used as the entry and exit for switching; If there is only a switching candidate entrance and exit of the non-switchable attribute state, the congestion alarm information is reported to the management system. 8 . The device according to claim 7 , wherein the selection module sends prompt information to vehicles outside the entrance and exit after determining the entrance and exit for switching, specifically: Send a switching prompt corresponding to the gate for switching through the guidance device of the management system, and prohibit new vehicles from entering the gate; After the remaining vehicles at the entrance and exit are processed, other vehicles are prompted to go to the entrance and exit for switching through the guidance device.

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