CN110958421A - Parking meter device with video image recognition, monitoring and charging functions - Google Patents
Parking meter device with video image recognition, monitoring and charging functions Download PDFInfo
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- CN110958421A CN110958421A CN201811112115.4A CN201811112115A CN110958421A CN 110958421 A CN110958421 A CN 110958421A CN 201811112115 A CN201811112115 A CN 201811112115A CN 110958421 A CN110958421 A CN 110958421A
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- parking space
- parking
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- vehicle
- monitoring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
- G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
- G07B15/02—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points taking into account a variable factor such as distance or time, e.g. for passenger transport, parking systems or car rental systems
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
- G08G1/0175—Detecting movement of traffic to be counted or controlled identifying vehicles by photographing vehicles, e.g. when violating traffic rules
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
Abstract
The invention discloses a device for monitoring parking space video images and acquiring charging information in a public area. The device mainly comprises a built-in filter lens, a digital camera, a GPU microprocessor, a mobile data transmission module, a power supply module and the like, adopts video acquisition, image processing and digital encryption technology and a comprehensive algorithm for eliminating the influence of invaders in a view field, realizes the detection of the occupation state of each parking space and the state identification and the whole-course monitoring in the processes of vehicle entering, staying and leaving the parking space, generates accurate billing information, acquires and obtains unchangeable on-site monitoring picture evidence, and transmits the generated data to a background billing system for processing through a 4G/5G mobile network. The invention realizes a distributed parking meter device with low power consumption, which is used as a basic unit on the Internet of things and the Internet and lays a foundation for unmanned and municipal management of open parking spaces.
Description
Technical Field
The invention relates to a device for identifying, monitoring and collecting charging information of parking spaces in a public area through video images.
Background
In order to solve the problem that parking is difficult in busy areas of cities or areas with relatively gathered population, parking spaces arranged on two sides of public roads and in other municipal public spaces have openness, and new characteristics and requirements on charging management are generated. In the closed parking lot, as the vehicles can only drive in and out at the limited entrance and exit, the digital cameras arranged at the entrance and exit can shoot the videos of the vehicles passing in and out, and the charging information is obtained after the processing; the charging and payment of the parking meter adopted at present for the parking space in the open space need to be highly conscious by drivers and passengers and can be completed only by manual operation. Because the management mode has the defects, the parking service in public areas is difficult to realize unmanned management, so that the open parking space charging service in some public areas is contracted to companies or individuals, and because accurate and timely charging information is difficult to obtain, the problems of more loopholes, non-transparent charging and high examination and supervision difficulty exist in manual charging and charging.
The digital video detection and monitoring technology adopted by the open parking spaces in the public space must eliminate the interference and influence of pedestrians or other moving objects passing through or staying in the field of view of the lens on the system. The cameras at the exit and entrance of the existing parking lot are in an instant working mode, and only when a vehicle enters or exits, the images are captured, identified and recorded, and no other objects exist between a lens and a target; currently, the parking space detection generally adopts ultrasonic distance measurement and geomagnetic coil induction technologies, an ultrasonic probe is positioned above a parking space and a vehicle, and a geomagnetic coil is arranged below the ground of the parking space; in the parking process of the vehicle, the intrusion of a moving object between the parking sensor and the vehicle cannot occur, namely, the misjudgment caused by the moving of the intruding object cannot be generated. In an open public space, when the automatic video detection technology is adopted for carrying out the identification of the driving-in state and the driving-out state and the detection and monitoring of the parking space state, the detection and the identification are frequently interfered and influenced by moving invaders in the range of the lens field of view, and the system misjudgment is caused. When the visual distance between the lens and the detection target is larger and the visual field is wider, the misjudgment probability caused by moving the invader is larger; the larger the density and the longer the residence time of the pedestrians and the moving objects in the public space are, the larger the system misjudgment probability is. The device adopts a multi-factor comprehensive judgment algorithm, and effectively reduces the probability of occurrence of misjudgment.
The charging parking lots such as shopping malls, office buildings and residential areas adopt an entrance and exit identification and instant charging mode, and most public space parking spaces have municipal attributes, are relatively dispersed, and are wide in distribution range. In order to realize municipal unmanned management and non-instant charging, the device is correspondingly designed on the detection, supervision and charging processes, and provides a basis for pursuing arrearage and punishment malicious fee evasion behaviors through whole-process evidence collection.
This device need set up and install near each parking stall, also has the characteristics that the mounted position is dispersed, the distribution area is extensive, and it has very big degree of difficulty to solve the power problem through municipal power supply system. Therefore, municipal power supply cannot reach the area, a wireless power supply module is arranged in the device, and electric energy of the device is periodically supplemented through a non-contact quick charging power supply system.
In order to solve the problems, the invention realizes a distributed parking meter device with low power consumption, adopts video acquisition, image processing and digital encryption technology to realize state identification and whole-process monitoring of each parking space in the processes of vehicle entering, staying and leaving, solves misjudgment caused by lens field-of-view invaders through comprehensive judgment, generates accurate charging information, and acquires and obtains unchangeable field monitoring picture evidence. Meanwhile, the parking meter device is used as a basic component unit of a parking charging system constructed on the Internet of things and the Internet, the working principle and the working mode of the parking meter device are completely different from those of a parking meter in the traditional sense and a video monitoring system for charging management of a parking lot, and the application of the parking meter device lays a foundation for unmanned and municipal management of the parking charging service of an open parking space in a public space.
Disclosure of Invention
The invention aims to provide a parking meter device with an 'electronic eye' function for parking charge management in a public space, and realize the functions of detecting the occupation state of an open parking space, identifying and monitoring vehicles, collecting charging information and the like.
The implementation process of the invention comprises the following steps: the parking meter device mainly comprises modules such as a built-in filter lens, a digital camera, a GPU microprocessor and the like, wherein during the period that a vehicle enters or leaves a parking space, the camera takes a video image of the vehicle, and the processor module is used for real-time monitoring and identification to generate a digital encryption picture and charging information; and the data transmission module transmits the information to a background charging management system for processing through a mobile network.
The parking space occupation state detection device has a parking space occupation state detection function, and can judge whether parking spaces are in an idle state, an illegal occupation state and a normal occupation state according to whether a vehicle entering the monitoring area can be detected or not and whether a detected object can be identified or not.
The device has a mobile detection function, monitors the dynamic change condition of the vehicle in real time when the vehicle enters or exits the parking space, detects and records the time, the geographic position, the parking space number and other information when the vehicle enters or exits, and generates charging information and an encrypted monitoring image.
The device has a video image recognition function and an algorithm for eliminating the interference influence of moving invaders in a view field, can recognize vehicle information, is different from other moving objects such as pedestrians, bicycles and the like passing through a parking space, eliminates the interference and influence of the invaders in the view field, and prevents misjudgment; the information such as the license plate number, the vehicle type and the like of the vehicle on the parking space can be identified and recorded.
The device has a flash shooting function, when the light intensity of the environment measured by a light measuring sensor arranged in the camera is lower than a limit value or is not enough to obtain a clear video image, the device starts a flash lamp working mode, the camera stops obtaining continuous video stream, and a target picture is shot under the assistance of the flash lamp.
The device has a process monitoring function, and captures the video code stream of the vehicle on the parking space according to the set time interval to generate the monitoring picture.
The device has a digital encryption function, digital pictures captured from video code streams and information corresponding to time, geographic information, parking space codes and license plate numbers are digitally encrypted together, and unchangeable encrypted pictures and watermark texts are generated.
The device provides support functions of parking space reservation, non-instant payment and the like, and can generate charging information such as expense detail, amount payable and the like corresponding to the license plate number according to parking time and different time period rates. The parking charging function in the public area can be realized only by forming a complete system together with a mobile data network, a background charging system and a maintenance system.
This device has parking stall state display function, shows the different operating condition on parking stall respectively through installing in red, green two sets of LED pilot lamps on device surface: the green light is on to indicate that the parking space is in an idle state, and parking service can be provided; the green light flickers to indicate that the parking space is reserved and only provides parking service for the reserved vehicle; the red light is on, which indicates that the parking space is occupied and is in a service state; and the red light flickers to indicate that the parking space is out of service or is forbidden to use.
The device has a local storage function, and can temporarily store original video code streams or compressed video stream data shot by a camera, generated monitoring pictures, charging information and other data in a built-in memory of the device according to a preset working mode; according to the storage capacity and the set period, the newly generated data is dynamically updated and covers the data exceeding the set period according to the first-in first-out principle, so that the circular storage is realized.
The device has a networking communication function, and the devices arranged on the public parking spaces in different areas are networked to form an area internet of things through a 4G/5G mobile network, and adjacent devices can self-organize local networks to mutually communicate and transmit data, so that the possibility is provided for sharing GPU resources and remote communication resources and reducing hardware cost. The use conditions of all parking spaces are dynamically sensed through a built-in video sensing part and an information processing module of the device, and monitoring and charging information of the parked vehicles is obtained; the background charging system can call the monitoring and charging information of low data volume in each device in real time or temporarily store the video code stream information of high data volume in local.
The device has the function of off-line operation, can work independently when the mobile data transmission network is suddenly jammed or the network fails, and uploads the temporarily stored local data to the background charging system after detecting that the network is recovered to be normal.
The power supply system of the device can adopt municipal power supply and solar power supply, can also adopt a wireless module for charging, is internally provided with an energy storage battery, and maintains normal operation within a certain time.
The device has a working state self-diagnosis function, and when the filter lens is polluted and shielded, the built-in module runs abnormally, the power supply voltage is too low or the capacity of the energy storage battery is lower than a set standard, the device alarms the background maintenance system through the network system and informs maintenance personnel of field treatment.
Drawings
FIG. 1 is a schematic view of the internal structure of the apparatus.
The numbers in the figures are respectively: the system comprises a 1-filter lens, a digital camera, a 2-GPU microprocessor module, a 3-mobile data transmission module and a 4-power supply module.
Fig. 2, fig. 3, fig. 4 and fig. 5 show several typical configurations and installation manners of the device in different situations.
The numbers in the figures are respectively: 5-parking meter device, 6-parking space, 7-vehicle
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying drawings.
Example (b): as shown in fig. 1, the parking meter device mainly comprises a built-in filter lens, a digital camera 1, a GPU microprocessor 2, a mobile data transmission module 3, a power supply module 4 and other main modules, and mainly realizes detection of the occupancy status of each parking space and acquisition of monitoring images and billing information of vehicles entering the parking spaces, and transmits the generated data to a background billing system for processing through a 4G/5G mobile network.
The installation mode is as follows: the parking meter device 5 is installed in front of or laterally in front of each parking space 6, and the specific installation positions are respectively shown in fig. 2, fig. 3, fig. 4 and fig. 5, the installation mode of the drawings is only a few exemplary applications, and the application mode of the invention is not limited to the following description.
The height of the filter lens and the digital camera 1 arranged in the parking meter device 5 is basically consistent with the average height of the license plate position of the vehicle 7, and the optimal video definition and the recognition effect of the typical characteristics of the target vehicle 7 are guaranteed to be obtained.
As shown in fig. 2, the parking meter device 5 may be installed at a middle position right in front of the parking space 6, where the lens and the camera 1 may capture a front-side or rear-side video image of the vehicle 7, so as to obtain the best recognition effect.
As shown in fig. 3, the parking meter device 5 may be installed in a front position on a boundary side of the parking space 6, and in this position, the lens and the camera 1 may capture a video signal in front of a front side or a rear side of the vehicle 7, so as to obtain a better recognition effect. In order to enhance the recognition effect, two sets of filter lenses and the camera 1 can be configured in the parking meter device 5 to respectively shoot the video information of the side surface of the vehicle on the adjacent parking spaces.
Fig. 4 and 5 show a simplified installation manner of parking meter devices 5, where each two adjacent parking spaces share one parking meter device 5, and two sets of filter lenses and cameras 1 are configured in each parking meter device 5 to respectively capture side video information of vehicles 7 on adjacent parking spaces 6; this simple installation reduces installation and maintenance costs due to the reduced number of parking meter devices 5.
The parking meter device 5 works according to the following principle: detecting the state of the parking space, when no vehicle drives into the parking space 6 and the microprocessor module 2 processes the video information shot by the camera 1 in the set focal length and does not detect that a moving object enters the monitored area, judging that the parking space 6 is in an idle state and setting a green LED indicator light to be on; when the parking space is free and a vehicle reserves the parking space in advance, a green LED indicator lamp is arranged to flash; when a large object is detected to stay in a monitoring area and the number or the type of a license plate is not recognizable, the parking space 6 is judged to be in an illegal occupation state, the device alarms the uploaded information, informs maintenance personnel to perform on-site treatment, and sets a red LED indicator lamp to flash and alarm; when the vehicle is detected to enter and the license plate number and the vehicle type of the vehicle can be identified, the parking space 6 is judged to be in a normal occupation state, and a red LED indicator lamp is set to be on.
The filter lens and digital camera module 1 can only obtain satisfactory focusing effect and shoot clear video images within a certain range in front of the parking space, so that a vehicle 7 is required to be parked in the middle of the parking space 6, and the head or the tail of the vehicle needs to keep a proper distance from a boundary line of the parking space; the filter lens can filter most interference of strong light or scattered light, weaken the influence of background color and protect the lens.
When the parking meter device 5 works, video image information shot by the camera module 1 is transmitted to the GPU microprocessor module 2 for processing through an internal bus interface, and the GPU microprocessor module 2 comprises various detection and identification software, encryption algorithm software, charging software, equipment diagnosis and management software and a data storage unit.
The GPU micro-processing module 2 can complete the movement detection of the target object according to the change of frame data before and after the video stream and the statistical characteristics of the change; determining the type of the target object through a recognition algorithm; the occupation condition of the parking space can be detected and judged by integrating the information, and the moving state, the corresponding time information, the license plate number and the vehicle type information of the vehicle 7 entering and leaving the parking space 6 are detected and identified.
And when the GPU micro-processing module 2 detects and identifies the vehicle 7 to be in a stop state, capturing pictures from the video code stream according to a set time interval to monitor the vehicle 7. When a moving object invades in the monitoring range between the device 5 and the vehicle 7, the misjudgment is prevented through comprehensive element algorithms such as time correlation, partial identifiable characteristic matching and the like; the snapshot frequency of the recognizable pictures is improved, and the interference and influence of moving invaded objects on all links such as moving detection, monitoring and charging are eliminated.
Digital images captured from the video code stream are digitally encrypted together with information of corresponding time, geographic information, parking space codes and license plate numbers through digital encryption algorithm software in the GPU micro-processing module 2, and unchangeable encrypted images and watermark texts are generated.
And generating charging information such as expense detail and amount due corresponding to the license plate number according to the parking time and different time period rates by using charging software in the GPU micro-processing module 2. When a moving object invades and interferes in the charging process, the time correlation principle is used for calculating.
The GPU micro-processing module 2 can temporarily store original video code streams or compressed video stream data shot by the camera module 1, generated monitoring pictures, charging information and other data in a built-in data storage unit according to a preset working mode; according to the capacity of the storage unit and the set period, the newly generated data is dynamically updated and covers the data exceeding the set period according to the first-in first-out principle, so that the circular storage is realized.
When detecting that the mobile data transmission network is suddenly jammed or has a communication interruption fault, the equipment diagnosis and management software of the GPU micro-processing module 2 automatically switches to an off-line running state, and uploads temporarily stored local data to a background charging system after detecting that the network is recovered to be normal. When detecting that the video stream is abnormal due to the faults of the filter lens and the camera module 1, the system alarms to a background maintenance system through a network system and informs maintenance personnel of field processing.
The mobile data transmission module 3 realizes the networking communication function, and the devices 5 arranged on the public parking spaces in different areas are networked to form an area internet of things through a 4G/5G mobile network, so that the data uploading and interoperation tasks with the background information system are completed.
The power supply module 4 provides reliable power supply for the camera 1, the GPU microprocessor module 2 and the mobile data transmission module 3, a municipal power supply system is preferentially adopted, and a solar battery mode or a wireless charging mode is adopted for providing power for occasions where municipal power supply lines cannot be laid and used. The power module 4 comprises a built-in group of energy storage batteries as a backup power supply, and the reliability of the power supply is improved in a municipal power supply/energy storage battery mode, or a solar battery/wireless charging module/energy storage battery mode, or a wireless charging module/energy storage battery combination mode. The power supply module 4 detects the power supply voltage in real time in the operation process, and when the voltage is too low or the capacity of the energy storage battery is lower than the set standard, the power supply module gives an alarm to a background maintenance system through a network system to inform maintenance personnel of on-site treatment.
The parking meter device 5 adopts different power management modes according to the power supply mode, and the microprocessor module 2 is set in a low power consumption mode when the power supply is carried out by combining solar energy and an energy storage battery, and stops temporarily storing the continuous video code stream data; the digital camera 1 reduces the video definition and operates at a lower video rate.
Claims (10)
1. A parking meter device is characterized by comprising a lens, a digital camera, a microprocessor, a mobile data transmission module, a power supply module and other main modules, wherein the lens, the digital camera, the microprocessor, the mobile data transmission module, the power supply module and the other main modules are arranged in front of or in front of a parking space in a distributed mode, misjudgment caused by invaders in a lens view field is eliminated through video acquisition and processing and a multi-element comprehensive algorithm, and additional functions of state detection and display, vehicle identification and monitoring, parking space reservation and charging information generation, data storage and remote transmission, wireless charging and the like of each parking space are achieved.
2. The system of claim 1, wherein the video motion detection and image recognition functions are integrated to determine three working conditions of "free", "illegal occupancy" and "normal occupancy" of the parking space, and the three working conditions are remotely transmitted to the background information system to provide information for parking space management.
3. The system of claim 1, wherein the video motion detection, the moving direction of the vehicle, the motion characteristics and the moving duration are integrated to determine whether the vehicle is temporarily passing or parked for a long time, monitor the dynamic change of the vehicle in real time, and detect and record the time when the vehicle enters or exits.
4. The method of claim 1, wherein the vehicle information is identified and distinguished from other moving objects passing through the parking space, excluding interference and influence from intrusions in the field of view; the information such as the license plate number, the vehicle type and the like of the vehicle on the parking space can be identified and recorded.
5. The method of claim 1, wherein capturing video code streams of vehicles on parking spaces according to a set time interval to generate monitoring pictures, digitally encrypting the monitoring pictures and information corresponding to time, geographic information, parking space codes and license plate numbers to generate unchangeable encrypted pictures and watermark texts, and using the pictures and watermark texts as punishment bases for arrearage reimbursement and malicious fee evasion.
6. The system as claimed in claim 1, wherein the four states of "free and service", "reserved", "occupied" and "forbidden" can be displayed by two red and green indicating lamps.
7. The system of claim 2, wherein the parking space can be reserved, and charging information such as the charge detail and the amount due corresponding to the license plate number can be generated according to the parking time and the rates of different periods; the reserved parking space needs to be paid in advance, and other parking service fees are in a non-instant payment mode.
8. The device according to claim 1, wherein according to the preset operation mode, the original video stream or the compressed video stream data taken by the camera, the generated monitoring picture, the charging information and other data can be temporarily stored in the built-in memory of the device; the newly generated data are dynamically updated and cover the data exceeding the set time limit, and the cyclic storage is realized.
9. The system of claim 1, wherein the devices installed in public parking spaces in different areas are networked to form an area internet of things through a 4G/5G mobile network, adjacent devices can communicate with each other, and a background system can call monitoring and charging information or video code stream information temporarily stored in each device in real time; when the mobile data transmission network is suddenly jammed or the network fails, the device can work independently and upload the temporarily stored local data to the background system after detecting that the network is recovered to be normal.
10. The device of claim 1, wherein the device can be powered wirelessly in addition to municipal power and solar power.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811112115.4A CN110958421A (en) | 2018-09-25 | 2018-09-25 | Parking meter device with video image recognition, monitoring and charging functions |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811112115.4A CN110958421A (en) | 2018-09-25 | 2018-09-25 | Parking meter device with video image recognition, monitoring and charging functions |
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| CN110958421A true CN110958421A (en) | 2020-04-03 |
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|---|---|---|---|---|
| CN205751270U (en) * | 2016-07-06 | 2016-11-30 | 苏州纽卡斯智能科技有限公司 | Parking stall measure management system |
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| CN106652478A (en) * | 2017-03-10 | 2017-05-10 | 青岛比特信息技术有限公司 | Intelligent roadside parking system |
| CN107195198A (en) * | 2017-07-31 | 2017-09-22 | 重庆酷贝科技发展有限公司 | A kind of curb parking management method and its system based on image recognition technology |
| WO2018014731A1 (en) * | 2016-07-21 | 2018-01-25 | 中兴通讯股份有限公司 | Roadside parking management method, device and system |
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| CN205751270U (en) * | 2016-07-06 | 2016-11-30 | 苏州纽卡斯智能科技有限公司 | Parking stall measure management system |
| WO2018014731A1 (en) * | 2016-07-21 | 2018-01-25 | 中兴通讯股份有限公司 | Roadside parking management method, device and system |
| CN106355886A (en) * | 2016-08-31 | 2017-01-25 | 智慧互通科技有限公司 | Parking management system for open type parking lot and management method of parking management system |
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Application publication date: 20200403 |