WO2020253651A1

WO2020253651A1 - Wireless broadcast and scanning identification-based smart parking method and system

Info

Publication number: WO2020253651A1
Application number: PCT/CN2020/096158
Authority: WO
Inventors: 胡林; 欧健; 黄晶; 陈强; 林淼
Original assignee: 长沙理工大学
Priority date: 2019-06-20
Filing date: 2020-06-15
Publication date: 2020-12-24
Also published as: CN110136480A

Abstract

A wireless broadcast and scanning identification-based smart parking method and a system. The method comprises the following steps: configuring a first wireless communication module of a vehicle to be in an accessible point mode so as to periodically broadcast the SSID thereof, wherein the SSID comprises vehicle information of the vehicle in which the module is located; a second wireless communication module at a parking space end periodically scanning surrounding SSIDs, and feeding back available parking space information to a human machine interaction terminal at a vehicle end corresponding to the SSID; the human machine interaction terminal receiving a parking space selection signal of a user, and feeding back the same to a selected parking space end to open a parking space lock; and the human machine interaction terminal guiding the user to park by acquiring a relative distance and direction of the vehicle end to the selected parking space end, wherein the first wireless communication module and the second wireless communication module use the same method of communication and do not have a communication connection established therebetween. The method and the system simplify a smart parking process, improve smart parking efficiency, and effectively alleviate the existing problem of parking difficulties.

Description

Intelligent parking method and system based on wireless broadcasting and scanning recognition

Technical field

The invention relates to the field of parking, in particular to an intelligent parking method and system based on wireless broadcasting and scanning recognition.

Background technique

With the increasing progress of urbanization and the continuous improvement of citizens’ living standards, the number of urban motor vehicles is increasing rapidly, and motor vehicles have become the preferred means of transportation for citizens. However, the lack of parking spaces makes it difficult to park. The difficulties faced by citizens who prefer to travel by motor vehicles. Therefore, under the premise that the number of existing parking spaces is limited, it is very necessary to manage the parking spaces intelligently, scientifically, and effectively to make full use of the shortage of parking spaces.

With traditional wireless communication technologies, such as WiFi wireless communication, the two interconnected parties need to perform a connection operation before they can transmit data to each other. The connection operation is more complicated. Generally, it takes 1-7.5s to establish a communication connection system, which seriously affects data acquisition. effectiveness.

Summary of the invention

In view of the above technical problems, the present invention provides a smart parking method and system based on wireless broadcasting and scanning recognition, which broadcasts wireless signals at the vehicle end and scans the wireless signals at the parking space end, and does not establish a communication connection between the vehicle end and the parking space end. It can complete parking space unlocking and vehicle parking, can simplify the process of smart parking, improve the efficiency of smart parking, and effectively alleviate the current parking difficulties.

In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

An intelligent parking method based on wireless broadcasting and scanning recognition includes the following steps:

Step 1. Set the first wireless communication module on the vehicle side to the access point mode so that the first wireless communication module periodically broadcasts its SSID; where the SSID of the first wireless communication module includes the SSID of the vehicle where the first wireless communication module is located. Vehicle information; the vehicle information includes a license plate number;

Step 2: The second wireless communication module of the parking space periodically scans the surrounding SSID; when the SSID including vehicle information is scanned, the control module of the parking space feeds back its own parking space information through the background server to the human-computer interaction of the corresponding SSID. terminal;

Step 3: The human-computer interaction terminal that receives the parking space information, receives the user's parking space selection signal, and feeds it back to the selected parking space terminal through the background server to unlock the parking space lock;

Step 4. The human-computer interaction terminal on the vehicle side guides the user to park by obtaining the relative distance and direction between the vehicle side and the selected parking space side;

Wherein, the communication modes of the first wireless communication module and the second wireless communication module are the same, and no communication connection is established between each other.

Since the SSID broadcast by the first wireless communication module includes the vehicle information of the vehicle where it is located, the second wireless communication module at the parking space can quickly search for and determine the specific vehicle with parking demand by scanning the surrounding SSID, without the need to communicate with the vehicle end of the vehicle. A wireless communication module establishes a communication connection to transmit vehicle information that requires parking, so as to feed back its own parking space information to the background server, through the background server to provide parking space selection to the human-computer interaction terminal on the specific vehicle; if a parking space is in the man-machine The interactive terminal is selected by the user for parking, and the parking space terminal opens the parking space lock. At the same time, the human-computer interactive terminal guides the user to complete the parking through the relative distance and direction between the vehicle terminal and the selected parking space terminal. Therefore, the parking method and system of the present invention does not require the establishment of a complex communication connection between the vehicle end and the parking space end, overcomes the redundant process of traditional parking mutual establishment of communication connections, and does not need to change the wireless communication standard, which can simplify the intelligent parking process. Improve the efficiency of smart parking and effectively alleviate the current difficulty of parking.

At the same time, because the first wireless communication module can only be scanned by the second wireless communication module within the range of strong signal, the parking space information at the parking space end will be displayed on the human-computer interaction terminal and selected by the user, which is equivalent to the user The parking spaces available for the machine interactive terminal are relatively close to the end of the vehicle where they are located, and rapid parking can be achieved.

In addition, the wireless intelligent parking of the present invention does not require the participation of parking managers, thereby saving human and material resources and improving resource utilization.

Further, the first wireless communication module and the second wireless communication module are both WiFi modules.

Further, it is characterized in that the broadcast period of the SSID is 100 ms.

Further, the signal transmission power of the first wireless communication module is 100 mw.

Further, the vehicle information also includes vehicle positioning information, and the positioning information includes latitude, longitude and heading;

In step 2, if the parking space side scans multiple SSIDs that include different vehicle information, use the vehicle positioning information in the SSID and its own positioning information to calculate the relative distance of the vehicle parking space, and the background server only sends the parking space information of the parking space to the vehicle The human-computer interaction terminal on the vehicle with the smallest relative distance between parking spaces.

Further, the vehicle information further includes vehicle positioning information, the positioning information includes latitude, longitude and heading, and the parking space information includes the relative distance and direction between the parking space end and the vehicle corresponding to the SSID; the parking space end and the vehicle corresponding to the SSID The relative distance and direction between the parking spaces are calculated by the control module of the parking space using its own positioning information and the vehicle positioning information in the SSID.

The parking space terminal calculates a relative distance and direction relative to the vehicle terminal. Compared with the calculation of the relative distance and direction between the vehicle terminal human-computer interaction terminal and multiple parking space terminals at the same time, the calculation amount of the vehicle terminal can be reduced. The construction cost of the parking system; and the relative distance and direction are calculated by the parking space and pushed to the human-computer interaction terminal through the background server in real time. When the vehicle leaves the parking space for a long distance and the parking space cannot scan the original vehicle, the parking space can directly Give up calculating the relative distance and direction of the leaving vehicle, and update the distance between the calculation and the newly scanned vehicle end in real time. Compared with the calculation of the relative distance and direction by the vehicle end, the real-time performance is stronger, which improves the flexibility of the parking system Sex.

Further, in step 4, the method of obtaining the relative distance and direction between the vehicle end and the selected parking space end is: the parking space vacancy information uploaded in real time from the selected parking space end is uploaded to the back-end server, and the vehicle end is then obtained from the back-end server Obtained; or, obtained by real-time calculation by the human-computer interaction terminal using the positioning information of the vehicle end and the selected parking space positioning information obtained from the background server.

Further, after step 4, the method further includes setting the first wireless communication module of the parked vehicle end and the second wireless communication module of the parking space end to a sleep mode, which can reduce power consumption.

Further, the first wireless communication module is a vehicle-mounted wireless network device or an intelligent terminal equipped with a wireless broadcast program.

Corresponding to the above-mentioned smart parking method, the present invention also provides a smart parking system based on wireless broadcasting and scanning recognition, including a vehicle end, a parking space end, and a background server. The vehicle end includes a first wireless communication module and a A human-computer interaction terminal, the parking space side includes a second non-communication module and a control module, and the communication modes of the first non-communication module and the second wireless communication module are the same;

The first wireless communication module is configured to periodically broadcast its own SSID in the accessible mode; wherein the SSID of the first wireless communication module includes vehicle information of the vehicle where it is located;

The second wireless communication module is configured to periodically scan the surrounding SSID;

The control module is configured to send the parking space information of its own parking space to the human-computer interaction terminal of the vehicle corresponding to the SSID when the second communication module scans the SSID including vehicle information; the vehicle information includes the license plate number ；

The human-computer interaction terminal is used to receive parking space information and the user's parking space selection signal, and feedback the user's parking space selection signal to the selected parking space terminal through the background server; it is also used to obtain the relationship between the vehicle terminal and the selected parking space terminal The relative distance and direction to guide users to park;

There is no communication connection between the first wireless communication module and the second wireless communication module.

Beneficial effect

The intelligent parking method and system based on wireless broadcasting and scanning recognition provided by the present invention only need to set the first wireless communication module of the vehicle end to the accessible point mode on the basis that no communication connection is established between the vehicle end and the parking space end. Make the first wireless communication module broadcast its own SSID periodically, and the SSID of the first wireless communication module includes the vehicle information of the vehicle it is in, which is equivalent to notifying the surrounding parking spaces that the vehicle has parking needs; and the second wireless communication of the parking spaces The module periodically scans the surrounding SSID, as long as it scans the SSID that includes vehicle information, it is considered that there are vehicles that need to be parked around the parking space, and then it finds the nearest free parking space and unlocks its parking space lock.

Since the SSID broadcast by the first wireless communication module includes the vehicle information of the vehicle in which it is located, the vehicle information of the vehicle requiring parking can be obtained without the first wireless module establishing a communication connection with the second wireless module, and the vehicle information can be opened according to the vehicle information. The nearest parking space is locked to unlock the parking space and parking the vehicle. Therefore, the parking method and system of the present invention does not require a complex communication connection between the vehicle end and the parking space end, and does not need to change the wireless communication standard, which can simplify the intelligent parking process, improve the efficiency of intelligent parking, and effectively alleviate the current parking difficulties. .

At the same time, the wireless intelligent parking of the present invention does not require the participation of parking managers, thereby saving human and material resources and improving resource utilization.

Description of the drawings

Figure 1 is a system framework diagram of an embodiment of the present invention;

Fig. 2 is a flow chart of a method according to an embodiment of the present invention, wherein Fig. 2(a) is a program flow chart of the vehicle end, and Fig. 2(b) is a program flow chart of the parking space end.

Detailed ways

The embodiments of the present invention will be described in detail below. This embodiment is carried out based on the technical solutions of the present invention, and detailed implementation manners and specific operation procedures are given to further explain the technical solutions of the present invention.

The present invention provides an intelligent parking method based on wireless broadcasting and scanning recognition, as shown in Figures 1, 2(a), and 2(b), including the following steps:

Step 1. Set the first wireless communication module of the vehicle to the access point mode so that the first wireless communication module has a cycle of 100ms (in other embodiments, the broadcast cycle can be adjusted, and the present invention is not specifically limited), The beacon broadcasts its own SSID (Service Set Identifier SSID) to the surroundings; wherein, the SSID of the first wireless communication module includes the vehicle information of the vehicle where the first wireless communication module is located, and the vehicle information includes the vehicle number and The location information of the vehicle, the location information includes latitude, longitude and heading.

The mode of the first wireless communication module on the vehicle side can be selected, and its mode can be set to AP mode (Access Point AP, that is, access point, at this time, the first wireless communication module is scanned as an accessible point) . When the vehicle has parking demand and reaches the scanning range of the parking lot, the SSID of the first wireless communication module set to AP mode will be scanned by the parking space. If the vehicle has no parking requirement, for example, the vehicle has been parked in a parking space, the first wireless communication module can be set to a sleep mode according to the demand to reduce power consumption.

Step 2: The second wireless communication module at the parking space periodically scans the surrounding SSIDs; when the SSID including vehicle information is scanned, the control module at the parking space feeds back parking space information to the human-computer interaction terminal on the vehicle corresponding to the SSID through the background server.

The SSID scanned by the second wireless communication module may be the SSID that includes vehicle information, or the same type of wireless signal of the surrounding non-vehicles, such as the free wireless network of a nearby shopping mall or the Bluetooth signal of the mobile phone of people passing by. Analyze and filter all the SSIDs found, and select only the SSIDs that include vehicle information to further perform step 3.

The parking space may also scan multiple SSIDs in the same scan period, and each SSID corresponds to a different vehicle, which means that there are multiple vehicles that have parking needs in the same scan period. Therefore, when the parking space side scans multiple SSIDs that include different vehicle information, the parking space side control module uses the vehicle positioning information in the SSID and its own positioning information to calculate the relative distance of the vehicle parking space, and the background server only sends the parking space information of the parking space side to the vehicle. The human-computer interaction terminal of the vehicle with the smallest relative distance between parking spaces. Arrange parking spaces for vehicles according to the relative distance between the vehicle end and the parking space end, which can improve the efficiency of smart parking.

Step 3. The human-computer interaction terminal that receives the parking space information receives the user's parking space selection signal, and feeds it back to the selected parking space terminal through the background server to unlock the parking space lock.

Around the vehicle, it is possible that the second wireless communication modules of multiple parking spaces can scan the SSID of the vehicle. At this time, the human-computer interaction terminal of the vehicle can receive the parking vacancy information of the corresponding multiple parking spaces from the back-end server. The interactive terminal allows users to select parking spaces.

Wherein, the parking space information includes the relative distance and direction between the parking space and the vehicle corresponding to the SSID; the relative distance and direction between the parking space and the vehicle corresponding to the SSID, the control module of the parking space uses its own positioning information and the information in the SSID Vehicle positioning information is calculated. Therefore, the user can use the relative distance direction between each parking space terminal and the own vehicle terminal displayed on the human-computer interaction terminal to preferentially select the parking space with the closest relative distance or the relative direction more convenient.

In the present invention, the communication modes of the first wireless communication module and the second wireless communication module are the same, and no communication connection is established between each other in the entire smart parking method. Since the SSID broadcast by the first wireless communication module includes the vehicle information of the vehicle where it is located, the second wireless communication module at the parking space can quickly search for and determine specific vehicles with parking needs by scanning the surrounding SSIDs, without the need to contact the vehicle A wireless communication module establishes a communication connection to transmit vehicle information that requires parking, so as to feed back its own parking space information to the background server, through the background server to provide parking space selection to the human-computer interaction terminal on the specific vehicle; if a parking space is in the man-machine The interactive terminal is selected by the user for parking, and the parking space terminal opens the parking space lock.

Step 4, the human-computer interaction terminal on the vehicle side guides the user to park by obtaining the relative distance and direction between the vehicle side and the selected parking space side.

After the user selects a parking space in the human-machine interactive terminal and unlocks the parking space lock on the corresponding parking space terminal, the human-computer interactive terminal obtains the relative distance and direction between the vehicle terminal and the selected parking space terminal to guide the user to complete the parking.

Among them, the relative distance and direction between the vehicle side and the selected parking space can be obtained by the vehicle side by uploading the parking space information of the selected parking space to the back-end server; it can also be obtained by the vehicle side in real time The self-positioning information and the positioning information of the selected parking space obtained from the background server are then calculated in real time.

Therefore, the parking method and system of the present invention does not require the establishment of a complex communication connection between the vehicle end and the parking space end, overcomes the redundant process of traditional parking mutual establishment of communication connections, and does not need to change the wireless communication standard, which can simplify the intelligent parking process. Improve the efficiency of smart parking and effectively alleviate the current difficulty of parking.

Based on WiFi technology, there are the following advantages: low cost, high penetration, low latency, long transmission distance, and the control program is simple to install and easy to implement. The first wireless communication module and the second wireless communication module of the present invention preferably adopt WiFi technology, thereby Shorten parking time and facilitate parking lot management. Therefore, the first wireless communication module is the first WiFi module, and the second wireless communication module is the second WiFi module. In addition, the first wireless communication module may be a vehicle-mounted wireless network device or a smart terminal provided with a wireless broadcast program, such as a wireless network device, a wireless router, a computer, a smart phone, and the like.

In the present invention, it is preferable to set both the first WiFi module and the second WiFi module to transmit at the highest WiFi output power of 100 mw and the lowest data rate, so as to obtain the highest packet delivery rate and penetration.

Corresponding to the smart parking method provided above, the present invention also provides a smart parking system based on wireless broadcasting and scanning recognition, including a vehicle end, a parking space end, and a background server. The vehicle end includes a first wireless communication set on the vehicle. A module and a human-computer interaction terminal, the parking space side includes a second communication module and a control module, and the communication modes of the first wireless communication module and the second wireless communication module are the same;

The first wireless communication module is configured to periodically broadcast its own SSID when set to an accessible mode; wherein, the SSID of the first wireless communication module includes vehicle information of the vehicle where it is located;

The control module is configured to send, through the background server, the parking space information of its own parking space to the human-computer interaction terminal on the vehicle side corresponding to the SSID when the second communication module scans the SSID including vehicle information;

The human-computer interaction terminal is used to receive parking space information and the user's parking space selection signal, and feedback the user's parking space selection signal to the selected parking space terminal through the background server; also used to obtain its own positioning information and obtain through the background server The location information of the selected parking space is used, and the obtained location information is used to guide the user to park.

Examples:

The vehicle side, as shown in Figure 2(a): (1) The vehicle obtains the self-location information of the vehicle side through the GPS module; (2) When the vehicle needs to park, set the first WiFi module on the vehicle to be accessible Point mode, and set the SSID of the first WiFi module to the license plate number, latitude, longitude and heading information of the vehicle, so that the first WiFi module broadcasts its own SSID to the surroundings in a period of 10ms, that is, periodically broadcasts the license plate number of the vehicle and the current vehicle The longitude and latitude information and heading information of the location indicate that the vehicle with the license plate number and positioning information needs to park; (3) When the user selects a parking space on the human-computer interaction terminal and unlocks the parking space lock, the human-computer interaction terminal obtains the selected parking space through the background server Positioning information, and use the positioning information of the selected parking space and the self-positioning information of the vehicle side to calculate the relative distance and relative direction information between the vehicle side and the parking space side, and guide the user to park according to the relative distance and direction; (4) When parking is completed, Set the first WiFi module to sleep mode.

The parking space side, as shown in Figure 2(b): (1) The parking space side obtains the positioning information of each parking space through the GPS module; (2) The second WiFi module at the parking space side regularly scans the surrounding SSID; (3) parses and filters out non- SSID in AP mode, leave the SSID in AP mode, that is, leave the SSID including the license plate number, latitude, longitude and heading information; (4) According to the remaining SSID and the positioning information of each parking space obtained in step (1), calculate the corresponding SSID The relative distance and relative direction between the vehicle and each parking space to determine the nearest vehicle; (5) If it is the nearest vehicle, send the parking space information of the parking space end to the human-computer interaction terminal of the nearest vehicle; (6) If the parking space is in When the human-computer interaction terminal is selected by the user, the parking space is unlocked.

The above embodiments are preferred embodiments of the application, and those of ordinary skill in the art can also make various changes or improvements on this basis. Without departing from the general concept of the application, these changes or improvements should belong to the present application. Within the scope of the application for protection.

Claims

An intelligent parking method based on wireless broadcasting and scanning recognition is characterized by including the following steps:

Step 1. Set the first wireless communication module on the vehicle side to the access point mode so that the first wireless communication module periodically broadcasts its SSID; where the SSID of the first wireless communication module includes the SSID of the vehicle where the first wireless communication module is located. Vehicle information; the vehicle information includes a license plate number;

Step 2: The second wireless communication module of the parking space periodically scans the surrounding SSID; when the SSID including vehicle information is scanned, the control module of the parking space feeds back its own parking space information through the background server to the human-computer interaction of the corresponding SSID. terminal;

Step 3: The human-computer interaction terminal that receives the parking space information, receives the user's parking space selection signal, and feeds it back to the selected parking space terminal through the background server to unlock the parking space lock;

Step 4. The human-computer interaction terminal on the vehicle side guides the user to park by acquiring the relative distance and direction between the vehicle side and the selected parking space side; wherein the communication modes of the first wireless communication module and the second wireless communication module are the same, and No communication connection is established between each other.
The method according to claim 1, wherein the first wireless communication module and the second wireless communication module are both WiFi modules.
The method according to claim 2, wherein the broadcast period of the SSID is 100ms; the signal transmission power of the first wireless communication module is 100mw.
The method according to claim 1, wherein the vehicle information further includes vehicle positioning information, and the positioning information includes latitude, longitude and heading;

In step 2, if the parking space side scans multiple SSIDs that include different vehicle information, use the vehicle positioning information in the SSID and its own positioning information to calculate the relative distance of the vehicle parking space, and the background server only sends the parking space information of the parking space to the vehicle The human-computer interaction terminal on the vehicle with the smallest relative distance between parking spaces.
The method according to claim 1, wherein the vehicle information further includes vehicle positioning information, the positioning information includes latitude, longitude and heading, and the parking space information includes the relative distance between the parking space and the corresponding vehicle of the SSID. Direction; the relative distance and direction between the parking space end and the vehicle corresponding to the SSID are calculated by the control module of the parking space end using its own positioning information and the vehicle positioning information in the SSID.
The method according to claim 1, characterized in that, in step 4, the relative distance and direction between the vehicle end and the selected parking space end are obtained by: uploading the parking space vacancy information uploaded in real time from the selected parking space end to The back-end server, the vehicle side obtains it from the back-end server; or, the human-computer interaction terminal uses the positioning information of its own vehicle side and the selected parking space location information obtained from the back-end server to perform real-time calculation.
The method according to claim 1, characterized in that, after step 4, it further comprises: setting the first wireless communication module of the parked vehicle and the second wireless communication module of the parking space to sleep mode.
The method according to claim 1, wherein the first wireless communication module is a vehicle-mounted wireless network device or a smart terminal provided with a wireless broadcast program.
An intelligent parking system based on wireless broadcasting and scanning recognition is characterized in that it includes a vehicle end, a parking space end, and a background server. The vehicle end includes a first wireless communication module and a human-computer interaction terminal arranged on the vehicle. The parking space side includes a second non-communication module and a control module, and the communication modes of the first non-communication module and the second wireless communication module are the same;

The first wireless communication module is configured to periodically broadcast its own SSID in the accessible mode; wherein the SSID of the first wireless communication module includes vehicle information of the vehicle where it is located;

The second wireless communication module is configured to periodically scan the surrounding SSID;

The control module is configured to send the parking space information of its own parking space to the human-computer interaction terminal of the vehicle corresponding to the SSID when the second communication module scans the SSID including vehicle information; the vehicle information includes the license plate number ；

The human-computer interaction terminal is used to receive the parking space information and the user's parking space selection signal, and feedback the user's parking space selection signal to the selected parking space terminal through the background server; also used to obtain the relationship between the vehicle terminal and the selected parking space terminal The relative distance and direction to guide users to park;

There is no communication connection between the first wireless communication module and the second wireless communication module.
The system according to claim 9, wherein the first wireless communication module and the second wireless communication module are both WiFi modules.