CN107134165B - Parking space license plate movable type recognition device and recognition method - Google Patents
Parking space license plate movable type recognition device and recognition method Download PDFInfo
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- CN107134165B CN107134165B CN201710411081.8A CN201710411081A CN107134165B CN 107134165 B CN107134165 B CN 107134165B CN 201710411081 A CN201710411081 A CN 201710411081A CN 107134165 B CN107134165 B CN 107134165B
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Abstract
The invention provides a device for identifying a parking space license plate by utilizing a mobile camera car, belongs to the technical field of intelligent management of parking spaces, and relates to a technical means for detecting and identifying the parking space license plate in an intelligent vehicle guiding and reverse vehicle searching system.
Description
Technical Field
The invention belongs to the technical field of intelligent management of parking lots, and relates to a technical means for detecting and identifying a parking space license plate in an intelligent vehicle guiding and reverse vehicle searching system, in particular to a device for identifying the parking space license plate by using a mobile camera car. The scheme is a divisional application of 2015103640860 (a parking space license plate movable recognition device and recognition method).
Background
With the development of social economy and the improvement of living standard of people, automobiles enter families more and more, and the automobile consumption times are silent. Along with the increase of vehicles, gaps of parking spaces in cities are larger and larger, the construction of parking lots is required to keep up, and for important public places, the parking lots serve as important supporting facilities and directly influence the service quality and the positioning grade of the parking lots.
In order to improve the service level of the parking lot, an intelligent parking lot management system is indispensable. The parking lot has an important function in most parking lots, brings convenience to parking of people, and has good social benefits and economic benefits.
In the intelligent parking lot management, the management of all aspects, the management and charging of vehicle access, the guidance of the vehicle access to the parking space of the parking lot and the reverse vehicle searching are several important aspects, and all subsystems are mutually associated and operate in a coordinated way. The intelligent parking space guiding system helps customers and vehicles to find proper parking lots and parking spaces in the shortest time, avoids the situation that the vehicles cannot find the parking lots, cannot find the parking spaces after entering a field, and even grab the parking spaces mutually, so that congestion is caused, the operation efficiency is improved, and drivers feel good service and pleasant feelings. The reverse car system of seeking of intelligence is when the car owner returns the parking area, because the parking area is too big or the topography is not familiar, the car owner can not find the car easily, and the system can help the car owner to find the region that the vehicle parked as early as possible, improves car owner's satisfaction for the vehicle turnover in parking area improves the rate of utilization and income simultaneously.
Currently, parking lot management systems can be roughly classified into the following types:
1. manual charging type: the parking lot management system is the most traditional mode, vehicles enter a manual recording card issuing machine from a parking lot entrance or are printed by a card punching machine, the vehicles enter the parking lot and then pay fees from an exit sentry box by taking parking time as a charging mode. The existing defects are as follows:
(1) charging can not be carried out according to time periods, people exist as factors in charging time, and disputes and contradictions are easy to occur;
(2) due to the charging by personnel, there may be charging holes;
(3) the number of workers is large, and the running cost is increased;
2. computer charging type: on the basis of a manual charging mode, automatic control equipment and a device are added, and the time and the vehicle information of the vehicle are recorded in an IC card mode. When a vehicle enters an entrance of a parking lot, the ground induction coil triggers a signal to pick up a picture for the vehicle at the entrance (simultaneously, the license plate is identified), the entrance controller prompts a driver to take a card, the controller writes information such as vehicle information, entrance time and the like into the IC card, the card is taken out from a card outlet, and after the driver takes the card, the barrier gate lifting rod releases the vehicle to enter the parking lot. When a vehicle leaves, when the vehicle enters an exit, a ground induction coil sends a trigger signal, an exit camera captures an image (or simultaneously recognizes a license plate), an exit toll booth or a central toll booth toll collector compares the image (simultaneously carries out number plate) of the entrance and the image (simultaneously carries out number plate) of the vehicle on a computer, the charge calculation is automatically carried out according to the entrance time and the charging mode of the vehicle, after a driver pays, the booth type, an operator presses a release button, and a barrier gate lifting rod is released; the central charging mode is that vehicles leaving the parking lot are paid in advance in a central charging room in the parking lot, when the vehicles drive to an exit, a driver inserts a card into an exit controller to swallow the card port, and after the controller confirms that the vehicles are paid, the controller controls the barrier gate lifting rod to release.
3. Guiding in the field: most of the vehicle guidance of the parking lot is conducted by fixed indication signs, planning is conducted according to traffic flow lines and zones of the parking lot, and the indication signs are designed by characters, arrows, symbols and the like.
4. Intelligent guiding and reverse vehicle searching: the intelligent guidance of the parking lot is to detect all parking places in the parking lot and indicate according to traffic flow lines and zones. The intelligent guide sign generally adopts the LED display screen, shows each regional empty parking stall quantity and direction.
(1) The intelligent guidance system determines the number of the empty parking spaces in the region on the basis of a parking space detection technology. The data are uploaded to an upper computer database through a communication network, the upper computer system determines the display content of the guide indication board in each area through calculation, comparison and logic control, and the data are downloaded to a corresponding display screen through the communication network to be displayed.
(2) The reverse vehicle searching system is used for identifying the information of the license plate parked in each parking space and storing the identified information into the database of the upper computer system, and the vehicles parked in the parking spaces can be inquired through the inquiry terminal. At present, the following two vehicle searching modes are mainly adopted:
the first method comprises the following steps: the system is characterized in that a plurality of positioning terminals are uniformly arranged in the whole parking area, and after a passenger parks the vehicle, the positioning terminals distributed in each area in the parking lot are utilized to read and write parking certificates on hands, so that the system can position the parking position of the vehicle according to the address of the positioning terminals. According to the positioning mode, passengers must perform positioning card swiping when leaving the parking lot, and can not perform reverse car searching when returning to the parking lot without card swiping for record.
The second method comprises the following steps: a camera is arranged in front of the parking space to identify the license plate information of the vehicle in the parking space, the license plate information of the vehicle in the parking space is read, and the part of information is stored in a system database. The passenger can inquire the position of the vehicle parking through the inquiry terminal, and the reverse vehicle searching function is realized. This method must install a large number of cameras to read the vehicle information, and the system circuit is complicated and the cost is very high.
In practical use, the first method does not identify the vehicle number, and has a simple structure and low cost, but has low practicability. The second method has a parking space license plate recognition mode, a fixed camera needs to be installed in each parking space, a large number of cameras need to be installed to achieve the purpose that all parking spaces are completely covered, the structure is complex, and investment is high. In view of the defects of the above modes, the mobile camera trolley mode with relatively high cost performance is provided from multiple aspects of practicability, reliability and stability, image capture and license plate recognition are carried out on the vehicle in the parking space, and the image and license plate data are uploaded in a wireless mode.
Disclosure of Invention
The invention aims to provide a structure and a manufacturing method of a device for capturing images, identifying license plates and transmitting wireless data of vehicles at parking spaces of a parking lot in a mobile camera trolley mode, and particularly relates to a mobile identification device and an identification method of the license plates at the parking spaces. The specific implementation technical scheme is as follows:
a parking space license plate mobile recognition device comprises a mobile camera trolley, a guide rail and a controller, and is characterized in that,
the guide rail is made of a 1.5mm cold-rolled steel plate and is formed by machining; carrying out surface plastic spraying treatment on the guide rail by acid washing, phosphating, electrostatic plastic spraying and drying processes on the processed guide rail semi-finished product; the guide rails are divided into a linear guide rail, a 90-degree corner guide rail, a 45-degree corner guide rail and a 15-degree climbing guide rail, and are connected through a guide rail interface board; laying an anti-wear and pressure-resistant guide rail film on the wheel running track surface on the guide rail; the guide rail can be used for mounting a photoelectric sensor reflector or an induction component of a proximity switch and is used for detecting the position of the parking space;
the mobile camera trolley consists of a driving wheel component, a driven wheel component, a trolley bottom plate, a trolley control box, a 360-degree electric pan-tilt and high-definition camera, a guide rail left side plate, a guide rail right side plate, a guide rail top plate, a photoelectric switch surface or proximity switch induction component, an anti-tilt wheel and a photoelectric switch or proximity switch, wherein the guide rail left side plate and the guide rail right side plate are respectively installed on two sides of the driving wheel component running on the guide rail top plate;
the mechanical driving structure of the mobile camera trolley comprises a driving wheel driven by a DC12V direct current motor positioned at the top of the driving wheel through a 90-degree corner reducer; the turning radius of the trolley is limited through a corner limiting hole on a base plate of the trolley; the trolley bottom plate is fixed through a guide rail limit wheel pin of the driving wheel set and a guide rail limit wheel pin of the driven wheel set; limiting wheels for preventing the trolley from inclining are arranged on two sides of the trolley bottom plate, and the driving wheel and the driven wheel are arranged in a T shape with the limiting wheels clamped in the guide rail;
the controller takes a 32-bit high-performance CPU as a control core and mainly comprises a driving motor control module with direct current motor PWM control, a battery charging management module for storage battery charging and discharging management, a photoelectric switch or a proximity switch for parking position detection, a control switch, a pan-tilt motor control module, an integrated shooting and recording and vehicle identification module, a memory card interface module, a network interface module, a wireless transceiver module for image snapshot and license plate information uploading triggering and wireless instruction and data transceiving and a state diagnosis and fault alarm assembly.
A parking space license plate mobile identification method is characterized in that the parking space license plate mobile identification device is adopted, and the method comprises the following steps:
1) planning a traffic flow line of a parking lot to ensure the traffic flow line of the whole parking lot to be smooth, partitioning the parking lot and setting nodes according to the size of the partitions to ensure that the number of parking spaces in charge of each node controller is less than or equal to 100;
2) the node controller inquires all the parking stall detectors through the communication bus, when the state of a certain parking stall changes, the parking stall is stored in the queuing list, and when the number of the queuing reaches 10 parking stalls or the time of entering the queuing list from the first parking stall reaches 10 minutes; the node controller sends a command sent by the mobile camera trolley and sends a parking space list of data to be collected;
3) after receiving the command, the mobile camera trolley starts from the base station, a parking space reflector or an induction component of a proximity switch installed on a guide rail is detected through a photoelectric sensor or a proximity switch installed on the trolley, when the fact that the number of a parking space is the same as one number in a parking space list needing information acquisition is detected, the mobile camera trolley stops, the set cradle head angle of the parking space is read from a program setting table, the position of the cradle head is adjusted to enable a camera to be aligned with the parking space, a car controller sends a snapshot image and a license plate identification command to the camera, the camera shoots an image after automatic focusing and flash lamp light supplementing, the snapshot image is identified through license plate identification software, and license plate information is read and sent to a controller for storage;
4) after the license plate of the parking space is identified, the next parking space is operated continuously, and when the license plate is detected to be the same as a certain serial number of the parking space list, the process is repeated;
5) until all the parking spaces in the parking space list are collected, the mobile camera trolley returns to the base station and uploads the information of the license plate of the captured parking space to the node controller;
6) the node controllers upload the parking space license plate information through the communication bus, the upper computer manages the data sent by all the node controllers, and the LED guide screen is refreshed with parking space data through each node controller through the communication bus.
Drawings
Examples of the present invention will now be described more fully with reference to the accompanying drawings. The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses.
FIG. 1 is a schematic view of a parking space license plate moving recognition device
FIG. 2 is a schematic view of a mobile camera car
FIG. 3 is a schematic view of a driving mechanism of a mobile camera trolley
FIG. 4 is a control block diagram of the mobile camera dolly
FIG. 5 is a node controller system block diagram
Detailed Description
The exemplary embodiments are provided so that this disclosure will be thorough and will fully convey the scope to those skilled in the art. Numerous specific details are set forth such as examples of specific components, devices, and methods in order to provide a thorough understanding of embodiments of the present invention. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms and that should not be construed as limiting the scope of the invention. In some example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, firstly, the traffic flow line of the parking lot is planned to ensure the traffic flow line of the whole parking lot is smooth. Secondly, the parking lot is partitioned (according to fire partitions, a trolley guide rail is prevented from penetrating through a fire curtain door) and nodes are arranged according to the size of the partitions, so that the number of parking spaces in charge of each node controller is not more than 100.
The specific working process of the invention is as follows: as shown in fig. 1, the node controller queries all the parking space detectors through the communication bus, when the state of a certain parking space changes, the parking space is stored in the queuing list, and when the number of the queuing reaches 10 parking spaces or the time from the first parking space entering the queuing list reaches 10 minutes; the node controller sends a command sent by the mobile camera trolley and sends a parking space list of data to be collected; after the mobile camera trolley receives the command, starting from a base station, detecting a parking space reflector or an induction component of a proximity switch installed on a guide rail through a photoelectric sensor or the proximity switch installed on the trolley, stopping the mobile camera trolley when detecting that a parking space number is the same as one number in a parking space list needing information acquisition, reading a set cradle head angle of the parking space from a program setting table, adjusting the position of the cradle head to enable a camera to be aligned with the parking space, and sending a snapshot and license plate identification command to the camera by a trolley controller. The camera captures images after automatic focusing and flash lamp light supplementing, the captured images are identified by license plate identification software, license plate information is read and sent to a car controller for storage; and after the license plate of the parking space is identified, continuing to operate to the next parking space, and repeating the process when detecting that the license plate is the same as a certain serial number of the parking space list. And when all the parking spaces in the parking space list are collected, the mobile camera trolley returns to the base station and uploads the information of the license plate of the captured parking space to the node controller. The node controllers upload the parking space license plate information through the communication bus, the upper computer manages the data sent by all the node controllers, and the LED guide screen is refreshed with parking space data through each node controller through the communication bus. When a vehicle passes through the vehicle passage, the photoelectric sensor arranged in the vehicle passage acts, the illuminating lamp in front of the vehicle is lightened according to a traffic flow line, and the illuminating lamp behind the vehicle is extinguished after time delay after the vehicle moves forwards, so that the illumination energy-saving control of the parking lot is realized.
The method for solving the technical problems is characterized by comprising the following aspects:
1. the guide rail structure of the mobile camera trolley and the manufacture thereof comprise the following steps: the guide rail is made of a 1.5mm cold-rolled steel plate and is formed by machining; carrying out surface plastic spraying treatment on the guide rail by the processed semi-finished guide rail through processes of acid washing, phosphating, electrostatic plastic spraying, drying and the like; the guide rails are divided into a linear guide rail, a 90-degree corner guide rail, a 45-degree corner guide rail and a 15-degree climbing guide rail, and are connected through a guide rail interface board; laying an anti-wear and pressure-resistant guide rail film on the wheel running track surface on the guide rail; the guide rail can be used for installing a photoelectric sensor reflector or an induction assembly of a proximity switch and used for detecting the position of the parking space.
2. The structure and manufacture of the mobile camera trolley are shown in figure 2, and comprise a driving wheel component 301, a driven wheel component, a trolley bottom plate 302, a trolley control box 303, a 360-degree electric cradle head 304, a high-definition camera 305, a guide rail left side plate 306, a guide rail right side plate 308, a guide rail top plate 307, a photoelectric switch surface or proximity switch induction component 309, an anti-tilting wheel 310, a photoelectric switch or proximity switch 311 and other components, wherein, the two sides of the driving wheel component 301 running on the guide rail top plate 307 are respectively provided with a guide rail left side plate 306 and a guide rail right side plate 308, the trolley control box 303 is connected to the trolley fixed bottom plate 302 and is provided with two anti-tilting wheels 310, the 360-degree electric holder 304 and the high-definition camera 305 are arranged on the top of the trolley control box, and the photoelectric switch surface or the proximity switch sensing component 309 and the photoelectric switch or the proximity switch 311 can be arranged on the side surface of the mobile camera trolley.
The manufacturing process of the mobile camera trolley comprises the following steps:
(1) the technical requirements are as follows:
the movement speed is as follows: 0.25-1 m/s;
turning radius: 0.7 m;
the parking space positioning adopts IC card positioning (an IC card is arranged on a guide rail, and a card reader is arranged on a mobile camera trolley);
supplying power to a lithium battery (under the condition of no charging, the outage capacity is 1 hour, and a charging base station is arranged on a linear guide rail section and has the length of 2 m);
the motor controller adopts a PWM control mode, and can set functions such as acceleration time, deceleration time, cruise speed and the like according to conditions;
limit switches are arranged at the front and the rear of the trolley, and the trolley can stop in time when running to the end head.
(2) The mobile camera trolley has a specific driving structure:
as shown in fig. 3, the mechanical driving structure of the mobile camera trolley adopts a DC12V DC motor 404 located at the top of a driving wheel 401 to drive the driving wheel 401 through a 90 ° corner reducer 403; the turning radius of the trolley is limited through the corner limiting hole 410 on the trolley bottom plate 407; the trolley bottom plate 407 is fixed through a guide rail limit wheel pin of the driving wheel set and a guide rail limit wheel pin of the driven wheel set; limiting wheels 408 for preventing the trolley from inclining are arranged on two sides of the trolley bottom plate 407, and the driving wheel 401 and the driven wheel 402 are arranged in a T shape with the limiting wheels 408 clamped in the guide rails 405.
As shown in fig. 4, the mobile camera car control adopts a specially designed controller 501, a 32-bit high-performance CPU is used as a control core, and the mobile camera car control mainly includes a driving motor control module 502 with dc motor PWM control, a battery charging management module 505 for battery charging and discharging management, a photoelectric switch or proximity switch 509 for parking space position detection, a control switch 508, a pan/tilt motor control module 503, an integrated camera and vehicle identification module 504, a memory card interface module 506, a network interface module 507, a wireless transceiver module 510 for image capture and license plate information uploading trigger and wireless instruction and data transceiver, and a state diagnosis and fault alarm module 511; the image capturing and license plate recognition control of the mobile camera dolly is based on a high-definition camera, a special controller which takes a high-performance CPU as a control core is designed, and an integrated shooting and license plate recognition module 504 which has the functions of camera image capturing external trigger control, license plate automatic recognition, automatic focusing lens control, automatic flashing control, data storage, external trigger and the like is provided, and a state diagnosis and fault alarm component 511 is triggered when a diagnosis fault occurs;
5. as shown in fig. 5, the structure and fabrication of the node controller includes: the node controller 601 adopts a high-performance 32-bit CPU as a control core, and has functions of communicating with the parking space detection module 602, queuing parking spaces for parking vehicles, sending wireless instructions and data to the mobile camera trolley, detecting the mobile camera trolley to a base station, controlling charging of the mobile camera trolley, and sending and refreshing data of the area LED guide sign 605. The node controller 601 and the parking space detection module 602 are connected through an RS-485(Modbus RTU communication protocol) or CAN _ BUS communication 603 interface, the state of the parking space in charge is polled at regular time, and when the state of the vehicle parked in the parking space changes, the parking space acquires and queues the information of the number plate of the vehicle in the parking space in the node controller.
The node controller and the mobile camera trolley use a wireless communication mode, and a universal wireless communication transceiver module 606 is adopted to establish a communication link between the node controller 601 and the mobile camera trolley. And sending a parking space list and a control command, and after receiving the command of the node controller, carrying out image capture and license plate recognition on the vehicles in the corresponding parking spaces according to the command requirement by the mobile camera trolley. After the mobile camera trolley finishes acquisition according to the instruction requirement of the node controller 601, the mobile camera trolley returns to the base station and sends the vehicle information of the list parking spaces to the node controller 601, and the node controller 601 transmits the detected data to the upper computer through the upper computer communication interface 607.
When it is detected that the dolly returns to the base station, the arrival detection 608 is performed, the charge control relay acts, the charger starts to work, the power supply 604 is supplied to the dolly charge bus, and the fast charge control 612 is performed on the battery on the dolly. The node controller 601 and the LED guide display board 605 communicate through an RS-485 communication interface by adopting a Modbus RTU communication protocol. The node controller reads the data of the parking space vehicle parking state in the area from the main system database, and the communication interface of the node controller downloads the data to the area LED guide display board to refresh the data of the display board. When a vehicle is detected to pass through the vehicle passage photoelectric detection switch 609, the lane illumination control contactor 610 acts, main illumination in front of the vehicle is lightened, and illumination in the rear is turned off in a delayed mode after the vehicle leaves the position of the photoelectric detection switch, so that illumination energy-saving control of a parking lot is achieved.
The specific implementation process comprises the following steps in engineering operation:
1. assembling and debugging steps of equipment
And (3) testing conditions are as follows: a set of test guide rails needs to be installed in a certain space according to the actual field environment. The method needs to have testing environments of straight line sections, 90-degree turning sections, 45-degree turning sections, 15-degree upward slope sections, 15-degree downward slope sections, base station sections and the like.
The method comprises the following steps: the parts in the camera shooting trolley structure diagram are used for assembling the trolley, debugging all parts of the trolley, and powering on the trolley driving structure for trial run after the assembly is finished, so that the driving mechanism is ensured to rotate flexibly and smoothly.
Step two: the trolley control box is arranged on the bottom plate, and a trolley controller, various control modules and a battery are arranged. And (4) testing is carried out through a control button of the trolley, and the controller and various control modules are confirmed to normally operate.
Step three: the trolley which is well installed and debugged is installed in a trolley running guide rail, the trolley is subjected to on-rail test by a remote controller for handheld debugging, and the remote controller sends instructions to realize the function tests of starting/stopping, speed control, position control and the like.
Step four: the camera is arranged on the trolley, the two sides of the guide rail are provided with simulation parking spaces, and simulation license plates are arranged in the simulation parking spaces. And inputting the camera shooting angles of the simulated parking spaces into the car controller, sending a parking space list through the handheld remote controller, and starting the mobile camera shooting trolley. And the mobile camera trolley carries out image snapshot and license plate recognition on the simulated license plates of the simulated parking spaces. And the mobile camera trolley returns to the appointed point after recognizing all the parking place license plates in the parking place list, and sends the license plate recognition information in the parking place list to the handheld remote controller, so that the recognized license plate is ensured to be consistent with the actual simulated license plate.
Step five: and installing a node controller, networking with a debugging computer through a communication port, and controlling the mobile camera trolley through computer application software.
Step six: the parking space data set to be simulated are read and downloaded to the node controller through an application program of the computer, and the LED guide screen is subjected to data refreshing through node control.
All factory node controllers, car controllers and high-definition license plate recognition cameras are subjected to strict parameter testing and related tests. And each mobile camera trolley needs to be subjected to factory online test, so that each mobile camera trolley leaving the factory meets the requirements of on-site safe, reliable and stable operation.
2. On-site installation and debugging
In the construction of modern parking lot management systems, if vehicle intelligent guidance and reverse vehicle searching systems need to be introduced, license plate identification of vehicles is a necessary function. At present, a camera is mainly installed on each parking space to identify the license plate of a vehicle on the parking space through license plate identification software, but the method can cause the complex system structure and the overlarge investment cost. Therefore, the invention adopts the mobile camera trolley to identify the license plate, thereby greatly reducing the investment cost of the system, simplifying the structure of the system and bringing convenience to the structure construction and on-site debugging. The field installation and debugging mainly illustrate the practical application field installation and debugging method of the mobile parking space license plate recognition device.
According to the traffic streamline planning of the parking lot, the influence of the fact that a trolley guide rail passes through a fireproof rolling door to influence the normal application of the fireproof rolling door is strictly forbidden by a fireproof subarea. A plurality of nodes are considered in a fire-proof subarea, the number of parking spaces which are managed by each node is less than or equal to 100, and the total length of the guide rail of each small subarea is not more than 150 meters. The guide rails are distributed in front of the parking spaces, the guide rails are assembled by adopting a standard guide rail type, the interface clearance is less than or equal to 0.5mm, and the surface is required to be subjected to burr treatment.
And a node controller is arranged near the guide rail base station, and various cables are connected according to requirements.
And installing the LED guide screen according to the traffic streamline plan.
And debugging is carried out one by taking the nodes as units.
And after all the nodes are completely debugged, connecting a system communication network and then performing system joint debugging.
According to an aspect of the present invention, referring to fig. 1 to 5, the node controller is composed of a high performance 32-bit CPU as a control core, and has a communication interface (RS-485 or CAN _ BUS) with a parking space detection module, a communication interface (RS-485 BUS) with a local LED guidance display board, a communication interface (100M ethernet interface, using TCP/IP communication protocol) with an upper computer system, a communication interface (serial communication interface) with a wireless communication module, a charging module control interface, a vehicle passage photoelectric sensor input and a vehicle passage lighting control output interface, etc. The following functions are realized: polling the parking space detection module by the node controller in an inquiry mode, and loading the changed parking spaces into a parking space list by the node controller when the parking space parking vehicle state changes; when the number of the parking spaces in the parking space list reaches 10 or the parking space state time from the first parking space entering the parking space list reaches 10 minutes, the node controller sends a list parking space license plate information acquisition instruction to the mobile camera shooting trolley through the wireless communication module; after receiving the completion instruction, the trolley starts from the base station to perform license plate recognition according to the parking spaces in the parking space list, returns to the base station after completion, and uploads the acquired data information to the node controller in a wireless transmission mode; the node controller uploads the parking space vehicle information to an upper computer database; reading parking space data of the node area and parking space data in front of the node area from an upper computer data device, and refreshing the data of the LED guide display board through RS-485 communication; the photoelectric sensor of the vehicle passage is used for detecting the condition of the vehicle in the vehicle passage, when the vehicle passes through the photoelectric sensor, the illumination in the front of the vehicle is lightened, and the illumination in the rear of the vehicle is extinguished in a delayed mode. The mobile camera shooting trolley comprises a main driving wheel set (comprising a driving wheel, a guide rail limiting wheel, a 90-degree corner reducer, a direct current motor, a bottom plate and the like), a driven wheel set (comprising a driven wheel, a guide rail limiting wheel and the like), a trolley bottom plate, a trolley control box (32-bit high-performance CPU is a core controller), a 360-degree cloud deck, a high-definition camera with a license plate recognition function and the like. The following functions are realized: the PWM direct current motor is adopted for control, and parameters such as acceleration time, deceleration time, uniform speed and the like can be set; counting and identifying the parking space number by adopting a photoelectric sensor or a proximity switch; the wireless module is communicated with the node controller, receives commands and data of the node controller and sends acquired parking space license plate information to the node controller; the 360-degree cloud deck can be controlled in an all-round mode, and the snapshot angle of each parking space image is set through a table mode preset in a control program; the vehicle license plate recognition method includes the steps that a high-definition camera with a license plate recognition function is adopted to capture a vehicle license plate in a parking space, the vehicle license plate is recognized, license plate information is transmitted to a trolley controller in a bus communication mode, and the camera is triggered to capture images when the trolley runs to a certain parking space. The trolley running guide rail adopts a standard guide rail which is divided into a linear guide rail, a 90-degree corner guide rail, a 45-degree corner guide rail and a 15-degree climbing guide rail, and is fixedly connected through a guide rail interface board. The guide rail is made of a 1.5mm cold-rolled steel plate, is formed by machining, and the surface of the processed guide rail semi-finished product is subjected to surface plastic spraying treatment by the processes of acid washing, phosphating, electrostatic plastic spraying, drying and the like. An anti-wear and pressure-resistant guide rail film is laid on the wheel running track surface on the guide rail, and the outer side of the guide rail can be used for fixing the reflecting surface of a photoelectric sensor or the sensing piece of a proximity switch and detecting the position of a parking space.
Claims (1)
1. An assembling and debugging method of a parking space license plate mobile recognition device comprises the following steps:
the method comprises the following steps: assembling the mobile camera trolley, debugging each part of the trolley, electrifying the trolley driving structure for trial run after the assembly is finished, and ensuring that the driving mechanism part rotates flexibly and smoothly;
step two: the trolley control box is arranged on the bottom plate, a trolley controller, various control modules and a battery are arranged, a test is carried out through a control button of the trolley, and the controller and the various control modules are confirmed to run normally;
step three: the trolley which is installed and debugged is installed in a trolley running guide rail, the trolley is subjected to on-rail test by a remote controller for handheld debugging, and the remote controller sends an instruction to realize the function test of starting/stopping, speed control and position control;
step four: installing a camera on a trolley, arranging simulation parking spaces on two sides of a guide rail, installing simulation license plates in the simulation parking spaces, inputting a camera shooting angle of each simulation parking space into a trolley controller, sending a parking space list through a handheld remote controller, starting a mobile camera trolley, carrying out image capture and license plate recognition on the simulation license plates of each simulation parking space by the mobile camera trolley, returning to a specified point after the mobile camera trolley finishes the recognition of the license plates of all the parking spaces in the parking space list, sending license plate recognition information in the parking space list to the handheld remote controller, and ensuring that the recognized license plates are consistent with actual simulation license plates;
step five: installing a node controller, networking with a debugging computer through a communication port, and controlling the mobile camera trolley through computer application software;
step six: reading and downloading the set simulated parking space data to a node controller through an application program of a computer, and refreshing the data of the LED guide screen through node control;
wherein, the dolly of making a video recording is by the driving wheel subassembly, from the driven wheel subassembly, the dolly bottom plate, the dolly control box, 360 electronic cloud platform and high definition digtal camera, guide rail left side board, guide rail right side board, the guide rail roof, photoelectric switch face or proximity switch response subassembly, it forms to prevent inclining wheel and photoelectric switch or proximity switch, wherein guide rail left side board and guide rail right side board are installed respectively to the both sides of the driving wheel subassembly of operation on the guide rail roof, the dolly control box is connected to on the dolly PMKD and have two wheels of preventing inclining on the dolly bottom plate, 360 electronic cloud platform and high definition digtal camera are installed the top of dolly control box, photoelectric switch face or proximity switch response subassembly and photoelectric switch or proximity switch are installed on the side of dolly.
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|---|---|---|---|
| CN201710411081.8A CN107134165B (en) | 2015-06-29 | 2015-06-29 | Parking space license plate movable type recognition device and recognition method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510364086.0A CN105023459B (en) | 2015-06-29 | 2015-06-29 | A kind of portable identifying device of parking stall car plate and recognition methods |
| CN201710411081.8A CN107134165B (en) | 2015-06-29 | 2015-06-29 | Parking space license plate movable type recognition device and recognition method |
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| CN201510364086.0A Division CN105023459B (en) | 2015-06-29 | 2015-06-29 | A kind of portable identifying device of parking stall car plate and recognition methods |
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| CN107134165A CN107134165A (en) | 2017-09-05 |
| CN107134165B true CN107134165B (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710676123.0A Withdrawn CN107393306A (en) | 2015-06-29 | 2015-06-29 | Parking stall car plate movable type identification device |
| CN201710690460.5A Withdrawn CN107274718A (en) | 2015-06-29 | 2015-06-29 | Utilize device of the dollying dolly to parking stall Car license recognition |
| CN201510364086.0A Active CN105023459B (en) | 2015-06-29 | 2015-06-29 | A kind of portable identifying device of parking stall car plate and recognition methods |
| CN201710411081.8A Active CN107134165B (en) | 2015-06-29 | 2015-06-29 | Parking space license plate movable type recognition device and recognition method |
| CN201710676120.7A Withdrawn CN107256641A (en) | 2015-06-29 | 2015-06-29 | The method of work of the portable identifying device of parking stall car plate |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710676123.0A Withdrawn CN107393306A (en) | 2015-06-29 | 2015-06-29 | Parking stall car plate movable type identification device |
| CN201710690460.5A Withdrawn CN107274718A (en) | 2015-06-29 | 2015-06-29 | Utilize device of the dollying dolly to parking stall Car license recognition |
| CN201510364086.0A Active CN105023459B (en) | 2015-06-29 | 2015-06-29 | A kind of portable identifying device of parking stall car plate and recognition methods |
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| CN201710676120.7A Withdrawn CN107256641A (en) | 2015-06-29 | 2015-06-29 | The method of work of the portable identifying device of parking stall car plate |
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- 2015-06-29 CN CN201710676123.0A patent/CN107393306A/en not_active Withdrawn
- 2015-06-29 CN CN201710690460.5A patent/CN107274718A/en not_active Withdrawn
- 2015-06-29 CN CN201510364086.0A patent/CN105023459B/en active Active
- 2015-06-29 CN CN201710411081.8A patent/CN107134165B/en active Active
- 2015-06-29 CN CN201710676120.7A patent/CN107256641A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
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| CN107134165A (en) | 2017-09-05 |
| CN107256641A (en) | 2017-10-17 |
| CN105023459A (en) | 2015-11-04 |
| CN105023459B (en) | 2017-10-03 |
| CN107274718A (en) | 2017-10-20 |
| CN107393306A (en) | 2017-11-24 |
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