CN108668231A - A kind of underground parking navigation system and its calculating and bootstrap technique - Google Patents
A kind of underground parking navigation system and its calculating and bootstrap technique Download PDFInfo
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- CN108668231A CN108668231A CN201810293325.1A CN201810293325A CN108668231A CN 108668231 A CN108668231 A CN 108668231A CN 201810293325 A CN201810293325 A CN 201810293325A CN 108668231 A CN108668231 A CN 108668231A
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- underground parking
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000006698 induction Effects 0.000 claims abstract description 8
- 230000001960 triggered effect Effects 0.000 claims abstract description 8
- 238000005516 engineering process Methods 0.000 claims description 4
- 238000007726 management method Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- 230000005672 electromagnetic field Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/024—Guidance services
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
- G08G1/141—Traffic control systems for road vehicles indicating individual free spaces in parking areas with means giving the indication of available parking spaces
- G08G1/144—Traffic control systems for road vehicles indicating individual free spaces in parking areas with means giving the indication of available parking spaces on portable or mobile units, e.g. personal digital assistant [PDA]
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
- G08G1/145—Traffic control systems for road vehicles indicating individual free spaces in parking areas where the indication depends on the parking areas
- G08G1/146—Traffic control systems for road vehicles indicating individual free spaces in parking areas where the indication depends on the parking areas where the parking area is a limited parking space, e.g. parking garage, restricted space
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/33—Services specially adapted for particular environments, situations or purposes for indoor environments, e.g. buildings
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Traffic Control Systems (AREA)
Abstract
The invention discloses a kind of underground parking navigation system, including system platform;Include that signal medium matter in underground parking planning driving path side is arranged in several, includes the information of itself present position in signal medium matter;Include can receive signal and embody location information for navigation user terminal;When vehicle drives into underground parking, vehicle falls into signal medium matter induction range in the process of moving, signal medium matter is triggered and emits own location information to system platform, and the location information that the location information of signal medium matter is compiled into vehicle by system platform is concurrently incident upon the user terminal.Calculating and guiding method of the present invention can effectively overcome the problems, such as underground parking poor signal, and can also even be used in the place of not movable signal, very practical.
Description
Technical field
The invention belongs to communication technique field, a kind of underground parking navigation system and its calculating and bootstrap technique are refered in particular to.
Background technology
Currently, shared concept being rooted in the hearts of the people gradually, the concept that parking stall is shared in some areas is also met the tendency of.But
Underground garage or in the weaker place of other signals when promoting this concept, frequently encountering causes because of poor signal
User cannot in time and efficiently travel to target parking stall.Such case is just more obvious on the large parking lot of multilayer, because
It not only needs to show the location information on direction of warp and weft in navigation for the parking lot of multilayer, also wants that vertical side can be embodied
Upward location information is for navigating.
Invention content
It can overcome the problems, such as poor signal the object of the present invention is to provide a kind of and height position information cannot be accurately reflected ask
The underground parking navigation system of topic and its calculating and bootstrap technique.
The object of the present invention is achieved like this:A kind of calculating of underground parking navigation and guiding method, including
System platform is used to dock each berth lock and user terminal, and realizes centralized management;
The signal medium matter in underground parking planning driving path side is arranged in several, includes itself in signal medium matter
The information of present position;
User terminal is built-in with APP;APP can be with system platform interaction data;User terminal receives signal and embodies
Location information is in screen, and when vehicle drives into underground parking, vehicle falls into signal medium matter induction range in the process of moving,
Signal medium matter is triggered and emits own location information to system platform, and system platform is by the location information of signal medium matter
The location information for being compiled into vehicle is concurrently incident upon the user terminal.
Preferably, the signal medium matter is the electronic tag using RFID technique, and the signal medium matter is arranged in institute
State the corner of each parking stall in underground parking.
Preferably, the underground parking and car owner are registered as user in system platform respectively;When car owner's user's registration,
Bind particular vehicle information and specific payment account.
Preferably, the underground parking further include have be separately positioned on underground garage entrance and exit the first sentry box and
It is provided with charging module on second sentry box, the first sentry box and the second sentry box;It is both provided at first sentry box and the second sentry box
The camera of information of vehicles for identification.
Preferably, first sentry box and the second sentry box are respectively arranged with card sender and receive card device.
Preferably, the user terminal is mobile phone, is provided with the software that can embody location information and navigation on hand.
Preferably, further include being useful for the inductor of induction vehicle location and emitting to server in the signal medium matter
The transmitter of signal;Signal medium matter senses vehicle location by inductor and emits own location information by transmitter
To system platform, the location information that the location information of signal medium matter is compiled into vehicle by system platform is concurrently incident upon the user
Terminal.
A kind of calculating of underground parking navigation and bootstrap technique, including the navigation system described in claim,
The calculating of the navigation system and bootstrap technique be,
Step (1), vehicle are routed to ground the entrance in lower parking lot by navigation system;
Step (2), the entrance of underground parking, which goes out, is provided with camera, and camera identifies information of vehicles and send vehicle
Library signal is to system platform;
Step (3), system platform send vehicle and are put in storage signal to user terminal;User terminal is shown in the underground parking
Portion's cartographic information and signal medium matter placement information;
Step (4), vehicle enter underground parking, the location information of signal medium quality detection vehicle and to be sent to system flat
Position signal is fed back to user terminal by platform, system platform, and the current location information of vehicle is presented simultaneously in user terminal on the screen
It navigates.
Preferably, each underground parking has unique identification code, is stored with and the identification code pair in system platform
The underground parking internal map information and signal medium placement information answered;In the step (3), the identification code is correspondingly
Lower inner part of parking lot cartographic information and signal medium matter placement information are synchronously transmitted to user terminal, and are opened up in user terminal
Show.
Preferably, in the step (2), the entrance of underground parking is provided with card taking device, and card taking device provides RFID card piece
To each vehicle, label information is stored in the chip of card, the signal medium matter is RFID reader, reads card
Location information and be sent to system platform;System platform sends position signal to user terminal.
Preferably, in the step (2), the user terminal, which is built-in with, is provided with FRID label information.
Preferably, the signal medium matter is a kind of base station for the beacon broadcast possessing bluetooth 4.0, after base station is triggered
Own location information is sent to system platform, system platform includes a database, includes underground parking in database
All roading information;The user terminal is built-in with navigation voice module;The beacon broadcast sent on the base station
Message is received by the user terminal and by field strength attenuation and distance relation function, calculates apart from the base stations beacon
Distance is simultaneously navigated as parameter.
The present invention is prominent and beneficial compared with prior art to be had the technical effect that:
1. calculating of the present invention and guiding method can effectively overcome the problems, such as underground parking poor signal, and
And can also even be used in the place of not movable signal, it is very practical.
2. the present invention is put down in the location information itself having by signal medium matter, and by these location informations by system
Platform is sent to the user terminal, the height and position reflected residing for vehicle that thus can be explicit, it is entirely avoided mobile
Influence of the signal to navigation accuracy.
Description of the drawings
Fig. 1 is the structure diagram of the present invention;
Fig. 2 is the floor map at basement one in Fig. 1;
Fig. 3 is the crossing distribution map under one of which data structure of the present invention;
In figure:1- signal medium matter.
Specific implementation mode
The present invention is described further with specific embodiment below.
Embodiment one:As shown in Figs. 1-3, a kind of system of underground parking navigation, including
System platform is used to dock each berth lock and user terminal, and realizes centralized management;
The signal medium matter 1 in underground parking planning driving path side is arranged in several, includes certainly in signal medium matter
The information of body present position;
User terminal is built-in with APP;APP can be with system platform interaction data;User terminal receives signal and embodies
Location information is in screen, and when vehicle drives into underground parking, vehicle falls into signal medium matter induction range in the process of moving,
Signal medium matter 1 is triggered and emits own location information to system platform, and system platform believes the position of signal medium matter
The location information that breath is compiled into vehicle is concurrently incident upon the user terminal.
The technical program travels the trigger signal medium 1 at underground parking by vehicle and leads to the location information of itself
It crosses transmitter to emit to system platform, system platform analyzes vehicle institute at that time by the location of signal Analysis medium 1
The position at place, and the vehicle position information is showed by user terminal.It is bright to facilitate client within the shortest time
Really the position of oneself and finds oneself and need the place stopped.
Signal medium matter 1 described in the technical program is preferably a kind of numbered signalling means of band, which represents
Namely the position of vehicle or the signal medium matter 1 are preferably a kind of infrared signal at this time for the position of the signalling means
Device by infrared induction vehicle and is triggered, and sends information to system platform.
Preferably, the signal medium matter 1 is the electronic tag using RFID technique, and the setting of signal medium matter 1 exists
The corner of each parking stall in underground parking.
A kind of calculating of underground parking navigation and bootstrap technique, including the navigation system described in claim,
The calculating of the navigation system and bootstrap technique be,
Step (1), vehicle are routed to ground the entrance in lower parking lot by navigation system;
Step (2), the entrance of underground parking, which goes out, is provided with camera, and camera identifies information of vehicles and send vehicle
Library signal is to system platform;
Step (3), system platform send vehicle and are put in storage signal to user terminal;User terminal is shown in the underground parking
Portion's cartographic information and signal medium matter placement information;
Step (4), vehicle enter underground parking, the location information of signal medium quality detection vehicle and to be sent to system flat
Position signal is fed back to user terminal by platform, system platform, and the current location information of vehicle is presented simultaneously in user terminal on the screen
It navigates.
Preferably, each underground parking has unique identification code, is stored with and the identification code pair in system platform
The underground parking internal map information and signal medium placement information answered;In the step (3), the identification code is correspondingly
Lower inner part of parking lot cartographic information and signal medium matter placement information are synchronously transmitted to user terminal, and are opened up in user terminal
Show.
Preferably, in the step (2), the entrance of underground parking is provided with card taking device, and card taking device provides RFID card piece
To each vehicle, label information is stored in the chip of card, the signal medium matter is RFID reader, reads card
Location information and be sent to system platform;System platform sends position signal to user terminal.
Radio frequency identification, RFID (Radio Frequency Identification) technology, also known as radio frequency identification are
A kind of communication technology can be identified specific objective by radio signals and read and write related data, without identifying system with it is specific
Mechanical or optical contact is established between target.The signal of radio is the electromagnetic field by being tuned into radio frequency, data from
It is attached on the label on article and sends out, to recognize automatically and track the article.Certain labels are in identification from identifier
Energy is can be obtained by the electromagnetic field sent out, does not need to battery;Also there is label itself to possess power supply, and can actively send out
Radio wave (electromagnetic field for being tuned into radio frequency).Label contains the information of Electronic saving, can be identified within several meters.
Unlike bar code, RF tag need not be within identifier sight, can also be embedded in and be tracked within object.
The position for sensing vehicle that can be simple and quick using RFID technique, and transmitted a signal to by radio-frequency technique
System platform, then user terminal is transmitted a signal to by system platform.Signal medium matter 1 is arranged at the turning of each parking stall simultaneously
Place, induction that thus can be with the realization of maximum magnitude to the position of vehicle increase the usage experience of product.
Preferably, the underground parking and car owner are registered as user in system platform respectively;When car owner's user's registration,
Bind particular vehicle information and specific payment account.
By registering user in system platform, so that it may to record the parking stall of the use habit and highly desirable stop of user
Position most reasonably arranges and distributes parking stall.The use feeling of client can greatly be improved.
Preferably, the underground parking further include have be separately positioned on underground garage entrance and exit the first sentry box and
It is provided with charging module on second sentry box, the first sentry box and the second sentry box.
A kind of design scheme of underground parking is specifically illustrated in the technical program, and design in this way can allow entire stream
Cheng Gengjia is perfect.Charging module can allow whole system operation generate social benefit, allow whole system more rational and orderly into
Row.
Preferably, the camera of information of vehicles for identification is both provided at first sentry box and the second sentry box.
A kind of identification information of vehicles is specifically illustrated to realize that statistics expense, user such as log at the work(in the technical program
The mode of energy.Camera can be logged in by identifying that license plate number carries out user, very simple and convenient rapid.
Preferably, first sentry box and the second sentry box are respectively arranged with card sender and receive card device.
A kind of mode that can realize charging is specifically illustrated in the technical program, and such design input cost is low, day
Often management is convenient, is technical solution preferably.
Preferably, the user terminal is mobile phone, is provided with the software that can embody location information and navigation on hand.
A kind of scheme of user terminal is specifically illustrated in the technical program, and can also be other than mobile phone can receive to penetrate
Other users the terminal such as automatic navigator or row of frequency signal either Bluetooth signal or infrared signal either circuit information
Vehicle recorder etc..
Preferably, further include being useful for the inductor of induction vehicle location and being sent out to server in the signal medium matter 1
Penetrate the transmitter of signal;Signal medium matter 1 senses vehicle location by inductor and own location information is passed through transmitter
To system platform, the location information that the location information of signal medium matter 1 is compiled into vehicle by system platform is concurrently incident upon institute for transmitting
State user terminal.
A kind of structural principle of signal medium matter 1, the setting of transmitter and inductor is specifically illustrated in the technical program
Whole system can be allowed more intelligent, it is more efficient during incuding vehicle and sending location information.
Preferably, the signal medium matter is a kind of base station for the beacon broadcast possessing bluetooth 4.0, after base station is triggered
Own location information is sent to system platform, system platform includes a database, includes underground parking in database
All roading information;The user terminal is built-in with navigation voice module;The beacon broadcast sent on the base station
Message is received by the user terminal and by field strength attenuation and distance relation function, calculates apart from the base stations beacon
Distance is simultaneously navigated as parameter.
The function that the technical program is broadcasted using the beacon of bluetooth 4.0, crossing, which pinpoints, indoors arranges the base stations beacon,
Bluetooth base. station information passes through with indoor each intersection information in platform maintenance to database.
Preferably to illustrate the content of the technical program, a kind of data structure of spy's citing is following (table one), Road
The position relationship of mouth refers to attached drawing 3:
Number | Bluetooth base. station MAC Address | Crossing title |
1 | F1:C2:E6:01:E0:70 | Indoor entrance |
2 | F1:C2:E6:01:E0:71 | The areas A crossing |
3 | F1:C2:E6:01:E0:72 | The areas B crossing |
4 | F1:C2:E6:01:E0:73 | The areas C crossing |
5 | F1:C2:E6:01:E0:74 | Indoor outlet |
Table one
It is planned according to indoor road, by road information by the way that in platform maintenance to database, data structure is following (table two):
Serial number | Base Serial Number | Finish number |
1 | 1 | 2 |
2 | 1 | 3 |
3 | 2 | 1 |
4 | 3 | 1 |
5 | 2 | 3 |
6 | 3 | 2 |
7 | 3 | 4 |
8 | 4 | 3 |
9 | 4 | 5 |
10 | 5 | 4 |
11 | 5 | 3 |
Table two
All crossing Collection data structures that can be reached based on current location are following (table three):
Table three
The navigational voice prompts content data structure at all crossings that can be reached based on current crossing is following (table four):
Table four
The Bluetooth base. station at indoor crossing constantly sends beacon broadcasting packets, and the terminal device for carrying bluetooth module receives
After beacon broadcasting packets, according to field strength attenuation and distance relation function, the distance apart from the base stations beacon is calculated, is passed through
Distance confirms the position of the beacon, and using location information is changed as starting point, target location is calculated as emphasis by shortest path
Method calculates the shortest path arrived at, when by indoor each point, passes through a upper point for process, current point and next
A point inquires matched data for four kinds to table, then carries out navigation voice broadcast, eventually arrives at destination.
Above-described embodiment is only presently preferred embodiments of the present invention, is not limited the scope of the invention according to this, therefore:It is all according to
The equivalence changes that structure, shape, the principle of the present invention is done, should all be covered by within protection scope of the present invention.
Claims (10)
1. a kind of underground parking navigation system, it is characterised in that:Including
System platform is used to dock each berth lock and user terminal, and realizes centralized management;
The signal medium matter in underground parking planning driving path side is arranged in several, includes residing for itself in signal medium matter
The information of position;
User terminal is built-in with APP;APP can be with system platform interaction data;User terminal receives signal and embodies position
Information is in screen, and when vehicle drives into underground parking, vehicle falls into signal medium matter induction range, signal in the process of moving
Medium is triggered and emits own location information to system platform, and system platform compiles the location information of signal medium matter
It is concurrently incident upon the user terminal at the location information of vehicle.
2. underground parking navigation system according to claim 1, it is characterised in that:The signal medium matter is to use RFID
The corner in each parking stall in the underground parking is arranged in the electronic tag of technology, the signal medium matter.
3. underground parking navigation system according to claim 1, it is characterised in that:The underground parking and car owner's difference
User is registered as in system platform;When car owner's user's registration, particular vehicle information and specific payment account are bound.
4. underground parking navigation system according to claim 1, it is characterised in that:The underground parking further includes having point
It is not arranged in the first sentry box and the second sentry box of underground garage entrance and exit, the first sentry box and the second sentry box are both provided with and are used for
Identify the camera of information of vehicles.
5. underground parking navigation system according to claim 1, it is characterised in that:Further include having in the signal medium matter
Inductor for incuding vehicle location and the transmitter to server transmitting signal;Signal medium matter is sensed by inductor
Vehicle location is simultaneously emitted own location information to system platform by transmitter, and system platform believes the position of signal medium matter
The location information that breath is compiled into vehicle is concurrently incident upon the user terminal.
6. calculating and the bootstrap technique of a kind of underground parking navigation, it is characterised in that:Including the navigation system described in claim 1-5
System,
The calculating of the navigation system and bootstrap technique be,
Step (1), vehicle are routed to ground the entrance in lower parking lot by navigation system;
Step (2), the entrance of underground parking, which goes out, is provided with camera, and camera identification information of vehicles simultaneously sends vehicle storage letter
Number to system platform;
Step (3), system platform send vehicle and are put in storage signal to user terminal;User terminal shows the underground parking internally
Figure information and signal medium placement information;
Step (4), vehicle enter underground parking, and the location information of signal medium quality detection vehicle is simultaneously sent to system platform,
Position signal is fed back to user terminal by system platform, and the current location information of vehicle and progress is presented in user terminal on the screen
Navigation.
7. calculating and the bootstrap technique of a kind of underground parking navigation according to claim 6, it is characterised in that:Each underground
Parking lot all has unique identification code, and underground parking corresponding with identification code internal map letter is stored in system platform
Breath and signal medium matter placement information;In the step (3), the corresponding underground parking internal map information of the identification code and letter
Number medium placement information is synchronously transmitted to user terminal, and is shown in user terminal.
8. calculating and the bootstrap technique of a kind of underground parking navigation according to claim 6, it is characterised in that:The step
(2) in, the entrance of underground parking is provided with card taking device, and card taking device provides RFID card piece to each vehicle, in the chip of card
It is stored with label information, the signal medium matter is RFID reader, reads the location information of card and is sent to system
Platform;System platform sends position signal to user terminal.
9. calculating and the bootstrap technique of a kind of underground parking navigation according to claim 6, it is characterised in that:The step
(2) in, the user terminal, which is built-in with, is provided with FRID label information.
10. calculating and the bootstrap technique of a kind of underground parking navigation according to claim 6, it is characterised in that:The letter
Number medium is a kind of base station for the beacon broadcast possessing bluetooth 4.0, and own location information is sent to by base station after being triggered
System platform, system platform include a database, include all roading information of underground parking in database;Institute
It states user terminal and is built-in with navigation voice module;The beacon broadcasting packets sent on the base station are received by the user terminal
And by field strength attenuation and distance relation function, calculates the distance apart from the base stations beacon and led as parameter
Boat.
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109544963A (en) * | 2018-12-17 | 2019-03-29 | 湖州职业技术学院 | Basement parking stall vehicle positioning system and method |
CN112270842A (en) * | 2020-10-15 | 2021-01-26 | 深圳市凯达尔科技实业有限公司 | Customized parking lot parking space guiding system and method |
CN114245308A (en) * | 2021-12-13 | 2022-03-25 | 安徽多威尔智能科技股份有限公司 | Ultrasonic underground positioning navigation system based on Bluetooth networking |
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CN103366593A (en) * | 2012-03-27 | 2013-10-23 | 哈尔滨工业大学深圳研究生院 | Intelligent parking navigation system based on cloud computing |
CN105023462A (en) * | 2015-07-08 | 2015-11-04 | 北京车行神州科技有限公司 | WeChat and short message stall navigation system and method based on stall navigation system |
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103366593A (en) * | 2012-03-27 | 2013-10-23 | 哈尔滨工业大学深圳研究生院 | Intelligent parking navigation system based on cloud computing |
CN105023462A (en) * | 2015-07-08 | 2015-11-04 | 北京车行神州科技有限公司 | WeChat and short message stall navigation system and method based on stall navigation system |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN109544963A (en) * | 2018-12-17 | 2019-03-29 | 湖州职业技术学院 | Basement parking stall vehicle positioning system and method |
CN112270842A (en) * | 2020-10-15 | 2021-01-26 | 深圳市凯达尔科技实业有限公司 | Customized parking lot parking space guiding system and method |
CN114245308A (en) * | 2021-12-13 | 2022-03-25 | 安徽多威尔智能科技股份有限公司 | Ultrasonic underground positioning navigation system based on Bluetooth networking |
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Application publication date: 20181016 |