Urban parking guidance publishing system

Abstract

The invention discloses an urban parking guidance publishing system, which comprises a parking reservation module, a data collection module, a parking guidance module and a parking management module, the parking reservation module is in communication connection with the data collection module and the parking guidance module. Relates to the technical field of urban parking, and solves the technical problems that charging of new energy vehicles is not considered and charging piles in a parking lot cannot be fully utilized when parking spaces are distributed. The vehicle information of the reserved vehicle and the parking information of each parking lot are obtained, the new energy vehicle and the fuel vehicle are distinguished according to the license plate number in the vehicle information, and the matched parking position is preferentially provided for the reserved vehicle of the corresponding type, so that the use condition can be met, the charging service can be provided for the owner of the new energy vehicle, and the use experience of the new energy vehicle is improved. And moreover, the parking lot is preferentially determined according to the available parking lot and the destination, so that the walking distance of the user can be reduced, and the service effect is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of urban parking, in particular to an urban parking guidance release system. Background Art

[0002] With the progress of society and the development of the national economy, the number of vehicles is increasing. In order to meet the parking needs of a large number of vehicles, the number of parking lots is also increasing. However, because there are too many parking lots, drivers who need to park have no way of knowing how many vacant parking spaces there are in each parking lot, which causes drivers to spend too much time looking for parking lots. Often, when they find a parking lot, the parking lot is full of vehicles, so they have to look for another parking lot with vacant parking spaces to park their vehicles, which wastes time looking for cars and increases vehicle fuel consumption. Later, some urban parking guidance systems appeared on the market.

[0003] A Chinese patent discloses an urban parking guidance system and method based on the Internet of Things (publication number: CN108122426A). The patent uses a data collection module to collect vehicle information of parking spaces and vehicle information at the entrances and exits of parking lots; a parking space reservation information release module is used for parking space reservation, induction inside and outside the parking lot, and indication of the best parking space, which is conducive to improving the parking management service level and service quality, improving the utilization rate of parking spaces, and reducing the economic losses caused by road congestion due to parking difficulties. However, with the popularization of new energy vehicles, more and more parking lots have begun to arrange charging spaces for new energy vehicles to replenish power for new energy vehicles when parking. However, in actual applications, charging spaces are often occupied by fuel vehicles, resulting in the problem that new energy vehicles cannot replenish power in time and charging piles cannot be fully utilized. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art; to this end, the present invention proposes an urban parking guidance release system, which is used to solve the technical problems that the need for charging of new energy vehicles is not taken into account when allocating parking spaces and the charging piles in the parking lot cannot be fully utilized. The present invention obtains the vehicle information of the reserved vehicle and the parking information of each parking lot, distinguishes between new energy vehicles and fuel vehicles according to the license plate number in the vehicle information, and provides matching parking positions for the corresponding types of reserved vehicles on a priority basis. While being able to meet the usage situation, it can also provide charging services for new energy vehicle owners, while improving the utilization rate of charging, and prioritizes the determination of parking lots according to available parking lots and target locations, which can reduce the user's walking distance, improve service effects, and solve the above-mentioned problems.

[0005] To achieve the above-mentioned object, the first aspect of the present invention provides a city parking guidance release system, comprising: a parking reservation module, a data collection module, a parking guidance module and a parking management module;

[0006] The data collection module: obtains vehicle information of the reserved vehicle and parking information of each parking lot, wherein the vehicle information includes the license plate number, current location, remaining battery power of the vehicle and the destination, the parking information includes the parking status of the parking location, the number of empty charging spaces, the number of empty common spaces, the position of common empty vehicles and the position of empty charging vehicles, and the parking status includes parked, not parked and reserved; and,

[0007] Obtain available parking lots for the reserved vehicle according to the destination of the reserved vehicle;

[0008] The parking reservation module: reserves a parking space in a parking lot according to the vehicle information of the reserved vehicle, and marks the parking status of the parking space as reserved;

[0009] The parking guidance module generates path information according to the current position of the reserved vehicle and the parking position of the available parking lot, and sends display information to the terminal device according to the current position of the reserved vehicle, the position of the terminal device and the path information;

[0010] Parking management module: used to update parking information based on path information.

[0011] It should be noted that a parking lot is a parking lot with parking spaces near the vehicle's destination. If the parking status of some current parking spaces is reserved, the parking space can be locked by a ground lock to prevent other vehicles from occupying the parking space. By obtaining the parking information of each parking lot, users can avoid manual selection of parking lots in subsequent processing, thereby reducing the user's actual operations and increasing the user experience.

[0012] Preferably, the step of obtaining a parking lot for the reserved vehicle according to the destination of the reserved vehicle includes:

[0013] A1: Extract the destination of the reserved vehicle, obtain several parking lots within a range of (m+i×100) meters around the destination of the reserved vehicle and the parking information of the corresponding parking lots; where i=0,1,2…,n, m is a positive number, and n is a positive integer;

[0014] A2: Determine whether the remaining quantity of charging spaces or ordinary spaces corresponding to the parking information in several parking lots is greater than 0; if so, mark the corresponding parking lot as a parking lot available for parking; if not, jump to S1.

[0015] By obtaining parking lots by increasing the distance in sequence, the number of available parking lots can be reduced in places with large flow of people and large number of parking lots, thereby reducing the amount of calculation in subsequent steps.

[0016] Preferably, the step of reserving a parking position in an available parking lot according to the vehicle information of the reserved vehicle comprises:

[0017] B1: Extract the license plate number, current location, remaining battery power and destination of the reserved vehicle;

[0018] B2: Obtain the walking distances between several parking lots and the target location respectively to obtain a walking distance data group; extract the parking information of the parking lot corresponding to the walking distance with the smallest value in the walking distance data group;

[0019] B3: Determine whether the reserved vehicle is a new energy vehicle based on the vehicle's license plate number; if yes, determine the parking location based on the parking information of the available parking lots corresponding to the vehicle's remaining power and the minimum walking distance; if no, determine the parking location based on the parking information of the available parking lots corresponding to the minimum walking distance.

[0020] It should be noted that the license plate number of a new energy vehicle has one more digit than that of a fuel vehicle. Therefore, it is currently possible to determine whether the vehicle is a new energy vehicle by the number of digits in the license plate number, and the walking distance between the parking lot and the target location can be obtained by navigating the static map.

[0021] Preferably, the determining of the parking position according to the parking information of the available parking lot corresponding to the remaining power of the vehicle and the minimum travel distance includes:

[0022] C1: Determine whether the number of empty charging spaces in the parking lot is greater than 0; if yes, select a charging empty space from several empty charging spaces and mark it as a parking space; if no, jump to C2;

[0023] C2: Compare the remaining power of the reserved vehicle with the threshold power; if the remaining power of the vehicle is greater than the threshold power, select an ordinary empty vehicle position from several ordinary empty vehicle positions and mark it as a parking position; otherwise, determine the parking position based on the walking distance of several parking lots and the charging empty vehicle positions.

[0024] In this way, charging stations with charging piles can be provided for new energy vehicles with insufficient power, thereby improving the user experience.

[0025] Preferably, the determining of the parking position according to the parking information of the available parking lot corresponding to the minimum walking distance includes:

[0026] Determine whether the number of vacant ordinary parking spaces in the parking lot is greater than 0; if yes, select an ordinary empty parking space from several ordinary empty parking spaces and mark it as a parking space; if no, select a charging empty parking space from several charging empty parking spaces and mark it as a parking space.

[0027] This method is mainly used to prevent fuel vehicles from occupying charging parking spaces. Parking spaces for new energy vehicles are only allocated when there are no ordinary empty spaces.

[0028] Preferably, the method of determining the parking position according to the walking distance of a plurality of parking lots and the position of the empty charging vehicle comprises:

[0029] D1: completing the update by removing the value of the minimum walking distance from the walking distance data group, and marking the parking lot corresponding to the minimum walking distance in the updated walking distance data group as the secondary parking lot;

[0030] D2: extract parking information of the second-choice parking lot;

[0031] D3: Determine whether the number of empty charging spaces in the second-selected parking lot is greater than 0; if yes, select one empty charging space from among several empty charging spaces and mark it as a parking space; if no, jump to D1.

[0032] Preferably, the generating of the path information according to the current position of the reserved vehicle and the parking position of the available parking lot includes:

[0033] Extract the current position and parking position of the reserved vehicle, obtain a static map from the database, mark the current position and parking position of the reserved vehicle on the static map respectively, and obtain a marked map; generate path planning information according to the marked map and the path planning algorithm; wherein the path planning information is composed of a number of guidance steps with an existing order.

[0034] It should be noted that the static map contains location information identifiers of fixed devices.

[0035] Preferably, the sending of display information to the terminal device according to the current location of the reserved vehicle, the location information of the terminal device and the path information includes:

[0036] The terminal device with the shortest distance from the current position of the reserved vehicle among several terminal devices is marked as the device to be displayed. The license plate number of the reserved vehicle is identified through the terminal device, the path planning information of the reserved vehicle is extracted, and the guidance steps currently executed by the reserved vehicle are obtained according to the current position of the reserved vehicle and sent to the display information.

[0037] By identifying the license plate number through the terminal device and providing guidance steps based on the license plate number and the current position, it is possible to avoid the terminal device displaying guidance steps for multiple vehicles and the car owner being unable to quickly understand the guidance steps for the corresponding parking position.

[0038] Preferably, updating the parking information according to the path information includes:

[0039] E1: Determine whether the reserved vehicle has completed the route planning information; if yes, jump to E2; if no, keep the parking information of the available parking lot and mark the parking status of the corresponding parking location as not parked;

[0040] E2: Determine whether the parking status is parked; if yes, update the number of empty charging spaces or ordinary spaces in the corresponding available parking place according to the parking position, and mark the parking status of the corresponding parking position as parked; if no, keep the parking information of the available parking lot.

[0041] Preferably, the parking status is acquired based on a position sensor.

[0042] The position sensor is used to obtain whether there is a vehicle at the charging position and / or ordinary space. If the position sensor detects that there is a vehicle at the charging position and / or ordinary space, the parking status of the corresponding parking space is modified to parked; if the position sensor does not detect that there is a vehicle at the charging position and / or ordinary space, the parking status is modified to reserved or not parked according to whether the parking space is reserved. Each position sensor has the position information of each parking space, and distinguishes between charging spaces and ordinary spaces. The number of vacant charging spaces and the number of vacant ordinary spaces can be obtained by counting the number of charging spaces and ordinary spaces in the non-parked state respectively.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] 1. In the present invention, by obtaining the vehicle information of the reserved vehicle and the parking information of each parking lot, new energy vehicles and fuel vehicles are distinguished according to the license plate number in the vehicle information, and matching parking locations are preferentially provided for the reserved vehicles of the corresponding types, which can not only meet the usage conditions, but also provide charging services for the owners of new energy vehicles, while improving the utilization rate of charging, and preferentially determine the parking lot according to the available parking lots and the target location, which can reduce the user's walking distance and improve the service effect.

[0045] 2. In the present invention, the route planning information is obtained according to the current position and parking position of the vehicle, and the license plate number of the reserved vehicle is identified through the terminal device, and the distance that the reserved vehicle will travel next is marked according to the current position of the vehicle, so that the user can quickly understand the direction to travel next. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0047] Figure 1 It is a schematic diagram of the process of the city parking guidance release system of the present invention;

[0048] Figure 2 This is a schematic diagram of module connection in the present invention;

[0049] Figure 3 It is a schematic diagram of the process of obtaining the parking position in the present invention. DETAILED DESCRIPTION

[0050] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] See also Figure 1-Figure 3 , the first aspect of the present invention provides an urban parking guidance release system, including: a parking reservation module, a data collection module, a parking guidance module and a parking management module;

[0052] The parking reservation module is respectively connected to the data collection module and the parking induction module in communication, and the parking management module is respectively connected to the parking induction module and the data collection module in communication;

[0053] Data collection module: obtain vehicle information of reserved vehicles and parking information of each parking lot, wherein the vehicle information includes the license plate number, current location, remaining battery power of the vehicle and the destination, the parking information includes the parking status of the parking location, the number of empty charging spaces, the number of empty common spaces, the number of common empty spaces and the number of empty charging spaces, and the parking status includes parked, not parked and reserved; and,

[0054] Obtain available parking lots for the reserved vehicle according to the destination of the reserved vehicle;

[0055] Parking reservation module: reserve a parking space in a parking lot according to the vehicle information of the reserved vehicle, and mark the parking status of the parking space as reserved;

[0056] Parking guidance module: generates path information according to the current position of the reserved vehicle and the parking position of the available parking lot, and sends display information to the terminal device according to the current position of the reserved vehicle, the position of the terminal device and the path information;

[0057] Parking management module: used to update parking information according to path information, and if the parking status of the front parking space is reserved, lock the parking space with a ground lock to prevent other vehicles from occupying the parking space.

[0058] In this embodiment, obtaining a parking lot for the reserved vehicle according to the destination of the reserved vehicle includes:

[0059] A1: Extract the destination of the reserved vehicle, obtain several parking lots within a range of (300+i×100) meters around the destination of the reserved vehicle and the parking information of the corresponding parking lots; where i=0,1,2…,n, and n is a positive integer;

[0060] A2: Determine whether the remaining quantity of charging spaces or ordinary spaces corresponding to the parking information in several parking lots is greater than 0; if so, mark the corresponding parking lot as a parking lot available for parking; if not, jump to S1.

[0061] Specifically, if all parking lots within 300 meters of the current target location are full, then the parking lots within 400 meters of the target location are extracted, and it is determined again whether there are charging spaces and ordinary spaces until an available parking lot is obtained.

[0062] By obtaining parking lots by increasing the distance in sequence, the number of available parking lots can be reduced in places with large flow of people and large number of parking lots, thereby reducing the amount of calculation in subsequent steps.

[0063] In this embodiment, reserving a parking position in a parking lot according to the vehicle information of the reserved vehicle includes:

[0064] B1: Extract the license plate number, current location, remaining battery power and destination of the reserved vehicle;

[0065] B2: Obtain the walking distances between several parking lots and the target location respectively to obtain a walking distance data group; extract the parking information of the parking lot corresponding to the walking distance with the smallest value in the walking distance data group;

[0066] B3: Determine whether the reserved vehicle is a new energy vehicle based on the total number of characters in the vehicle license plate number; if it is, obtain the minimum walking distance through static map navigation, and determine the parking position based on the parking information of the available parking lot corresponding to the remaining power of the vehicle and the minimum walking distance; if it is not, determine the parking position based on the parking information of the available parking lot corresponding to the minimum walking distance.

[0067] It should be noted that the current license plate number for new energy vehicles has 8 characters, while the license plate number for fuel vehicles has only 7 characters.

[0068] Further, the parking position is determined according to the parking information of the available parking lot corresponding to the remaining power of the vehicle and the minimum travel distance, including:

[0069] C1: Determine whether the number of empty charging spaces in the parking lot is greater than 0; if yes, select a charging empty space from several empty charging spaces and mark it as a parking space; if no, jump to C2;

[0070] C2: Compare the remaining power of the reserved vehicle with the threshold power; if the remaining power of the vehicle is greater than the threshold power, select an ordinary empty vehicle position from several ordinary empty vehicle positions and mark it as a parking position; otherwise, determine the parking position based on the walking distance of several parking lots and the charging empty vehicle positions.

[0071] For example, when the number of available charging spaces in the current parking lot is 0 and the remaining power of the reserved vehicle is less than the threshold power, it means that the reserved vehicle needs to be charged, so the parking location needs to be changed;

[0072] In this way, charging stations with charging piles can be provided for new energy vehicles with insufficient power, thereby improving the user experience.

[0073] Further, determining the parking position according to the parking information of the available parking lot corresponding to the minimum walking distance includes:

[0074] Determine whether the number of vacant ordinary parking spaces in the parking lot is greater than 0; if yes, select an ordinary empty parking space from several ordinary empty parking spaces and mark it as a parking space; if no, select a charging empty parking space from several charging empty parking spaces and mark it as a parking space.

[0075] This method mainly prevents fuel vehicles from occupying charging parking spaces. New energy vehicle parking spaces are allocated only when there are no ordinary empty spaces. This can not only ensure the normal use of empty charging spaces, but also allow fuel vehicle users to reach their destination as quickly as possible.

[0076] Furthermore, the parking position is determined according to the walking distance of several parking lots and the position of the empty charging vehicle, including:

[0077] D1: completing the update by removing the value of the minimum walking distance from the walking distance data group, and marking the parking lot corresponding to the minimum walking distance in the updated walking distance data group as the secondary parking lot;

[0078] D2: extract parking information of the second-choice parking lot;

[0079] D3: Determine whether the number of empty charging spaces in the second-selected parking lot is greater than 0; if yes, select one empty charging space from several empty charging spaces and mark it as a parking space; if no, jump to D1.

[0080] By changing the available parking lots, we can find parking spaces that can charge new energy vehicles again.

[0081] In this embodiment, the path information is generated according to the current position of the reserved vehicle and the parking position of the available parking lot, including:

[0082] Extract the current position and parking position of the reserved vehicle, obtain a static map from the database, mark the current position and parking position of the reserved vehicle on the static map respectively, and obtain a marked map; generate path planning information according to the marked map and the path planning algorithm; wherein the path planning information is composed of a number of guidance steps with an existing order.

[0083] Exemplary, guiding steps: drive forward 150 meters, turn left and continue driving 100 meters.

[0084] It should be noted that the static map contains location information identifiers of fixed devices.

[0085] Furthermore, display information is sent to the terminal device according to the current location of the reserved vehicle, the location information of the terminal device and the path information, including:

[0086] The terminal device with the shortest distance from the current position of the reserved vehicle among several terminal devices is marked as the device to be displayed. The license plate number of the reserved vehicle is identified through the terminal device, the path planning information of the reserved vehicle is extracted, and the guidance steps currently executed by the reserved vehicle are obtained according to the current position of the reserved vehicle and sent to the display information.

[0087] By identifying the license plate number through the terminal device and providing guidance steps based on the license plate number and the current position, it is possible to avoid the terminal device displaying guidance steps for multiple vehicles and the car owner being unable to quickly understand the guidance steps for the corresponding parking position.

[0088] Furthermore, the parking information is updated according to the path information, including:

[0089] E1: Determine whether the reserved vehicle has completed the route planning information; if yes, jump to E2; if no, keep the parking information of the available parking lot and mark the parking status of the corresponding parking location as not parked;

[0090] E2: Determine whether the parking status is parked; if yes, update the number of empty charging spaces or ordinary spaces in the corresponding available parking place according to the parking position, and mark the parking status of the corresponding parking position as parked; if no, keep the parking information of the available parking lot.

[0091] Specifically, the parking state is acquired based on a position sensor, and the position sensor is used to acquire whether there is a vehicle at the charging position and / or the ordinary position.

[0092] If the position sensor detects that there is a vehicle in the charging position and / or the ordinary space, the parking status of the corresponding parking space will be modified to parked; if the position sensor does not detect that there is a vehicle in the charging position and / or the ordinary space, the parking status will be modified to reserved or not parked according to whether the parking space is reserved. Each position sensor has the location information of each parking space, and distinguishes between charging spaces and ordinary spaces. The number of vacant charging spaces and the number of vacant ordinary spaces can be obtained by counting the number of charging spaces and the number of ordinary spaces in the unparked state respectively.

[0093] Part of the data in the above formula is calculated by removing the dimension and taking its numerical value. The formula is a formula closest to the actual situation obtained by software simulation of a large amount of collected data; the preset parameters and preset thresholds in the formula are set by technical personnel in this field according to actual conditions or obtained through simulation of a large amount of data.

[0094] The working principle of the present invention is as follows: vehicle information of a reserved vehicle and parking information of each parking lot are obtained, available parking lots for the reserved vehicle are obtained according to the target destination of the reserved vehicle, a parking position of the available parking lot is reserved according to the vehicle information of the reserved vehicle, the parking status of the parking position is marked as reserved, path information is generated according to the parking position of the reserved available parking lot, display information is sent to the terminal device according to the current position of the reserved vehicle, the position of the terminal device and the path information, and the parking information is updated according to the path information.

[0095] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. Urban parking guidance release system, characterized by: include: Parking reservation module, data collection module, parking guidance module and parking management module; The data collection module: obtains vehicle information of the reserved vehicle and parking information of each parking lot, wherein the vehicle information includes the license plate number, current location, remaining battery power of the vehicle and the destination, the parking information includes the parking status of the parking location, the number of empty charging spaces, the number of empty common spaces, the position of common empty vehicles and the position of empty charging vehicles, and the parking status includes parked, not parked and reserved; and, Obtain available parking lots for the reserved vehicle according to the destination of the reserved vehicle; The parking reservation module: reserves a parking space in a parking lot according to the vehicle information of the reserved vehicle, and marks the parking status of the parking space as reserved; The parking guidance module generates path information according to the parking position of the reserved parking lot, and sends display information to the terminal device according to the current position of the reserved vehicle, the position of the terminal device and the path information; Parking management module: Update parking information based on path information.

2. The urban parking guidance release system according to claim 1, characterized in that: The step of obtaining a parking lot for the reserved vehicle according to the destination of the reserved vehicle includes: A1: Extract the destination of the reserved vehicle, obtain several parking lots within a range of (m+i×100) meters around the destination of the reserved vehicle and the parking information of the corresponding parking lots; where i=0,1,2…,n, m is a positive number, and n is a positive integer; A2: Determine whether the remaining quantity of charging spaces or ordinary spaces corresponding to the parking information in several parking lots is greater than 0; if so, mark the corresponding parking lot as a parking lot available for parking; if not, jump to S1.

3. The urban parking guidance release system according to claim 1, characterized in that: The step of reserving a parking position in a parking lot according to the vehicle information of the reserved vehicle comprises: B1: Extract the license plate number, current location, remaining battery power and destination of the reserved vehicle; B2: Obtain the walking distances between several parking lots and the target location respectively to obtain a walking distance data group; extract the parking information of the parking lot corresponding to the walking distance with the smallest value in the walking distance data group; B3: Determine whether the reserved vehicle is a new energy vehicle based on the vehicle's license plate number; if yes, determine the parking location based on the parking information of the available parking lots corresponding to the vehicle's remaining power and the minimum walking distance; if no, determine the parking location based on the parking information of the available parking lots corresponding to the minimum walking distance.

4. The urban parking guidance release system according to claim 3, characterized in that: The method of determining the parking position according to the parking information of the available parking lot corresponding to the remaining power of the vehicle and the minimum travel distance includes: C1: Determine whether the number of empty charging spaces in the parking lot is greater than 0; if yes, select a charging empty space from several empty charging spaces and mark it as a parking space; if no, jump to C2; C2: Compare the remaining power of the reserved vehicle with the threshold power; if the remaining power of the vehicle is greater than the threshold power, select an ordinary empty vehicle position from several ordinary empty vehicle positions and mark it as a parking position; otherwise, determine the parking position based on the walking distance of several parking lots and the charging empty vehicle positions.

5. The urban parking guidance release system according to claim 3, characterized in that: The determining of the parking position according to the parking information of the available parking lot corresponding to the minimum walking distance includes: Determine whether the number of vacant ordinary parking spaces in the parking lot is greater than 0; if yes, select an ordinary empty parking space from several ordinary empty parking spaces and mark it as a parking space; if no, select a charging empty parking space from several charging empty parking spaces and mark it as a parking space.

6. The urban parking guidance release system according to claim 4, characterized in that: The method of determining the parking position according to the walking distance of a plurality of parking lots and the position of the empty charging vehicle comprises: D1: completing the update by removing the value of the minimum walking distance from the walking distance data group, and marking the parking lot corresponding to the minimum walking distance in the updated walking distance data group as the secondary parking lot; D2: extract parking information of the second-choice parking lot; D3: Determine whether the number of empty charging spaces in the second-selected parking lot is greater than 0; if yes, select one empty charging space from among several empty charging spaces and mark it as a parking space; if no, jump to D1.

7. The urban parking guidance release system according to claim 1, characterized in that: The generating of path information according to the parking position of the reserved parking lot includes: Extract the current location and parking location of the reserved vehicle, obtain a static map from the database, mark the current location and parking location of the reserved vehicle on the static map respectively, obtain a marked map, and generate path planning information based on the marked map and the path planning algorithm; wherein the path planning information is composed of a number of guidance steps with an existing order.

8. The urban parking guidance release system according to claim 7, characterized in that: The sending of display information to the terminal device according to the current location of the reserved vehicle, the location information of the terminal device and the path information includes: The terminal device with the shortest distance from the current position of the reserved vehicle among several terminal devices is marked as the device to be displayed. The license plate number of the reserved vehicle is identified through the terminal device, the path planning information of the reserved vehicle is extracted, and the guidance steps currently executed by the reserved vehicle are obtained according to the current position of the reserved vehicle and sent to the display information.

9. The urban parking guidance release system according to claim 1, characterized in that: The updating of parking information according to the path information includes: E1: Determine whether the reserved vehicle has completed the route planning information; if yes, jump to E2; if no, keep the parking information of the available parking lot and mark the parking status of the corresponding parking location as not parked; E2: Determine whether the parking status is parked; if yes, update the number of empty charging spaces or ordinary spaces in the corresponding available parking place according to the parking position, and mark the parking status of the corresponding parking position as parked; if no, keep the parking information of the available parking lot.

10. The urban parking guidance release system according to claim 1, characterized in that: The parking state is acquired based on a position sensor.

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