CN115346377B - AVP vehicle detection system and method - Google Patents
AVP vehicle detection system and method Download PDFInfo
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- CN115346377B CN115346377B CN202210967385.3A CN202210967385A CN115346377B CN 115346377 B CN115346377 B CN 115346377B CN 202210967385 A CN202210967385 A CN 202210967385A CN 115346377 B CN115346377 B CN 115346377B
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- 238000001514 detection method Methods 0.000 title claims abstract description 12
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- 238000005516 engineering process Methods 0.000 claims abstract description 14
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- 238000012545 processing Methods 0.000 claims description 6
- 238000013135 deep learning Methods 0.000 claims description 4
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- 238000001931 thermography Methods 0.000 claims description 3
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- 238000012544 monitoring process Methods 0.000 description 2
- 238000012634 optical imaging Methods 0.000 description 2
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- 238000013473 artificial intelligence Methods 0.000 description 1
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Classifications
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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
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/04—Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
- G08G1/166—Anti-collision systems for active traffic, e.g. moving vehicles, pedestrians, bikes
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Abstract
The application discloses AVP vehicle detection system and method, the system includes: the system comprises an infrared thermal imager, a communication unit, an image acquisition unit, a safety early warning unit and a main control computer; the infrared thermal imager is connected with the communication unit; the communication unit is also respectively connected with the main control computer, the safety early warning unit and the image acquisition unit. The application has wide application prospect, is suitable for common parking lots, and does not need to be reconstructed through an AVP field end; the infrared thermal imager is multiplexed with the monocular camera, and recognizes and tracks the AVP vehicle track without additional interaction with the vehicle; the application only uses one infrared thermal imager, and the monocular camera technology is mature, and the system cost is low.
Description
Technical Field
The application relates to the field of vehicle detection, in particular to an AVP vehicle detection system and method.
Background
With the continuous development of the Internet of things, artificial intelligence, robots and automation technology, a plurality of new application scenes are created in the aspect of intelligent parking. Autonomous passenger parking AVP is one of these technologies that aim to achieve L4 level of vehicle autonomous parking in a parking lot. According to the intelligent transformation degree of vehicles and parking lots, the industry currently divides intelligent vehicle terminals, intelligent field terminals and vehicle fields into three main technical paths. The existing AVP vehicle detection technology is mainly designed aiming at a scene of fusion of a parking lot, and can monitor the self-service parking vehicle state in a parking lot in real time by utilizing the cooperation of a remote equipment end and an AVP vehicle end and a field end monitoring system and a remote assistance means, for example, the vehicle provided with the AVP vehicle end reports abnormality/warning information, real-time video analysis, and finds potential hazards in a manual monitoring mode and the like, and the vehicle is timely and remotely assisted. However, for general parking lots that are not intelligently modified, there is no basis for interworking with AVP vehicle segments, and thus it is not possible to perceive which are ordinary vehicles and which are AVP vehicles from the beginning. In the prior art, for detecting a common vehicle, a patent CN113538927a is communicated with a vehicle-mounted unit of the vehicle to be detected to acquire vehicle information stored in the vehicle-mounted unit of the vehicle to be detected, and the technology needs to establish communication with the vehicle-mounted unit of the vehicle to be detected, but for the common vehicle, the common vehicle cannot be required to meet the requirements of communication equipment and protocols.
Disclosure of Invention
The method and the device aim at the AVP application scene under the intelligent vehicle end, and solve the problem that the existing AVP vehicle detection depends on communication and cooperation between the vehicle and the parking lot. The parking lot does not need to provide AVP field end equipment in advance, does not need to be in contact with an AVP vehicle, and autonomously detects and monitors the action condition of the AVP vehicle so as to prevent possible safety accidents in automatic driving.
To achieve the above object, the present application provides an AVP vehicle detection system including: the system comprises an infrared thermal imager, a communication unit, an image acquisition unit, a safety early warning unit and a main control computer; wherein the infrared thermal imager is connected with the communication unit; the communication unit is also respectively connected with the main control computer, the safety early warning unit and the image acquisition unit.
Preferably, the thermal infrared imager is used for obtaining an infrared thermal image by detecting and measuring radiation of an incoming vehicle; transmitting the infrared thermography to the communication unit.
Preferably, the communication unit is configured to receive the infrared thermal image and transmit the infrared thermal image to the host computer.
Preferably, the main control computer is configured to determine whether the entering vehicle is an AVP vehicle according to the infrared thermal image map, obtain a determination result, and if the determination result indicates that the entering vehicle is an AVP vehicle, transmit the determination result to the image acquisition unit through the communication unit.
Preferably, the working procedure of obtaining the judging result by the main control computer includes: judging whether an infrared thermal image of a driver exists in the infrared thermal image captured by the infrared thermal imager; when the vehicle is an AVP vehicle, the thermal infrared imager can only capture the thermal infrared image of the incoming vehicle.
Preferably, the image acquisition unit is configured to receive the determination result transmitted by the communication unit, and acquire the AVP vehicle image; extracting license plate information according to the AVP vehicle image, and taking the license plate information as a unique index of the AVP vehicle; and transmitting the license plate information to the main control computer through the communication unit.
Preferably, the workflow of extracting the license plate information by the image acquisition unit includes: and identifying the moving AVP vehicle by using an image processing technology based on deep learning, performing snapshot, and extracting license plate information of the AVP vehicle by using a license plate identification technology.
Preferably, the safety early warning unit is used for receiving the license plate information transmitted by the communication unit, reminding other common vehicles of paying attention, and avoiding the occurrence of safety accidents.
The application also provides an AVP vehicle detection method, which comprises the following steps:
collecting an infrared thermal image of an entering vehicle;
judging the infrared thermal image to obtain a judging result;
acquiring image information of an AVP vehicle according to the judging result, and acquiring license plate information of the AVP vehicle according to the image information;
reminding other entering vehicles to pay attention to avoid the AVP vehicle with the license plate information, and avoiding safety accidents.
Compared with the prior art, the beneficial effects of the application are as follows:
the application has wide application prospect, is suitable for common parking lots, and does not need to be reconstructed through an AVP field end; wherein, the infrared thermal imager multiplexes with the monocular camera, recognizes and tracks the AVP vehicle track without additional interaction with the vehicle. The application only uses one infrared thermal imager, and the monocular camera technology is mature, and the system cost is low.
Drawings
For a clearer description of the technical solutions of the present application, the drawings that are required to be used in the embodiments are briefly described below, it being evident that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a system architecture of the present application;
FIG. 2 is a schematic flow chart of the method of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In order that the above-recited objects, features and advantages of the present application will become more readily apparent, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
As shown in fig. 1, a schematic structural diagram of a system of the present application includes: the system comprises an infrared thermal imager, a communication unit, an image acquisition unit, a safety early warning unit and a main control computer; the infrared thermal imager is connected with the communication unit; the communication unit is also respectively connected with the main control computer, the safety early warning unit and the image acquisition unit.
In the embodiment, the infrared thermal imager in the system of the application adopts a Yossent type cradle head thermal imager, and the type of equipment can be hoisted to support real-time video transmission and JPG image capture. A thermal infrared imager is mounted at the parking lot entrance suspension, and an optoelectronic device is used to detect and measure the radiation and to correlate the radiation with the surface temperature. The infrared thermal imager receives the infrared radiation energy distribution pattern of the parking vehicle by using the infrared detector and the optical imaging objective lens and reflects the infrared radiation energy distribution pattern on the photosensitive element of the infrared detector, so that an infrared thermal image is obtained, and the thermal image corresponds to the thermal distribution field on the surface of the object. When a person drives in the vehicle, the vehicle and the driver drive to the parking lot entrance, and the infrared thermal imager captures an infrared thermal image of the person and the vehicle in front of the vehicle; when the vehicle is an AVP vehicle, the vehicle is not driven, and the infrared thermal imager can only capture the infrared thermal image of the vehicle.
Then, transmitting the capturing result to a main control computer by a communication unit, wherein in the embodiment, the main control computer in the system adopts a Hua elastic cloud server ECS, and the CPU/memory ratio is 1:2/1:4; the number of vCPUs ranges from 2 to 128; the fundamental frequency/Rui frequency is 3.0GHz/3.5GHz; the maximum packet receiving and transmitting capability is 1200 ten thousand PPS, and the real-time packet receiving and transmitting and data processing model deployment requirements are met. The communication unit adopts an in-field local area network, and the local area network covers the whole parking area by arranging 3 industrial-grade AP transmitting base stations and 1 exchanger. After the main control computer performs noise reduction, processing and analysis, whether the driving vehicle is an AVP vehicle is judged according to whether a driver exists in the infrared thermal image. If the vehicle is judged to be the AVP vehicle, the result is sent to the image acquisition unit again by the communication unit.
In the embodiment, the image acquisition unit of the system consists of a plurality of monocular cameras hung on a parking lot suspension, and the Haikang Wei vision monocular cameras are adopted to support the snapshot of license plates, sub-brands, body colors and vehicle type information of running vehicles. After the image acquisition unit receives the signal sent by the communication unit, the image acquisition unit starts to acquire an AVP vehicle image, the moving vehicle is identified and captured by utilizing the image processing technology based on deep learning, license plate information of the AVP vehicle is extracted by utilizing the license plate identification technology, and the license plate information is used as a vehicle uniqueness index and is sent to the main control computer through the communication unit so as to be convenient for follow-up tracking of the track position of the vehicle in a parking lot.
In the embodiment, the safety early warning unit consists of a plurality of LED alarm lamp belts arranged at two sides of an internal channel of the parking lot; the coverage area of each group of alarm lamp bands corresponds to the visual coverage area of one monocular camera. After the image acquisition unit detects that a vehicle running in the current area exists, the image is transmitted to the main control computer through the communication unit, whether the license plates are consistent or not is judged, if the license plates are consistent, the safety early warning unit in the area is started, the LED warning lamp belt in the area is controlled to flash, other common vehicles are reminded of paying attention, and safety accidents are avoided.
Example two
As shown in fig. 2, which is a schematic flow chart of the method, the steps include:
s1, collecting an infrared thermal image of a vehicle.
A thermal infrared imager is mounted at the parking lot entrance suspension to detect and measure radiation and to correlate the radiation with the surface temperature. The infrared thermal imager receives the infrared radiation energy distribution pattern of the parking vehicle by using the infrared detector and the optical imaging objective lens and reflects the infrared radiation energy distribution pattern on the photosensitive element of the infrared detector, so that an infrared thermal image is obtained, and the thermal image corresponds to the thermal distribution field on the surface of the object.
S2, judging the infrared thermal image to obtain a judging result.
Analyzing and judging an infrared thermal image of a person and a vehicle in front of the captured vehicle; when the vehicle is an AVP vehicle, the vehicle is not driven, and the infrared thermal imager can only capture the infrared thermal image of the vehicle.
S3, acquiring image information of the AVP vehicle according to a judging result, and acquiring license plate information of the AVP vehicle according to the image information.
If the vehicle is judged to be the AVP vehicle, acquiring an AVP vehicle image, identifying a moving vehicle by using an image processing technology based on deep learning, and capturing; and then, using a license plate recognition technology to extract license plate information of the snap-shot AVP vehicle, and taking the license plate information as a vehicle uniqueness index.
S4, reminding other entering vehicles to pay attention to avoid the AVP vehicle with license plate information, and avoiding safety accidents.
Tracking the track position of the AVP vehicle in the parking lot, reminding other common vehicles of paying attention according to the track position, and avoiding the occurrence of safety accidents.
The foregoing embodiments are merely illustrative of the preferred embodiments of the present application and are not intended to limit the scope of the present application, and various modifications and improvements made by those skilled in the art to the technical solutions of the present application should fall within the protection scope defined by the claims of the present application.
Claims (2)
1. An AVP vehicle detection system, comprising: the system comprises an infrared thermal imager, a communication unit, an image acquisition unit, a safety early warning unit and a main control computer; wherein the infrared thermal imager is connected with the communication unit; the communication unit is also respectively connected with the main control computer, the safety early warning unit and the image acquisition unit; wherein,
the infrared thermal imager is used for obtaining an infrared thermal image by detecting and measuring radiation of an incoming vehicle; transmitting the infrared thermography to the communication unit;
the communication unit is used for receiving the infrared thermal image and transmitting the infrared thermal image to the main control computer;
the main control computer is used for judging whether the incoming vehicle is an AVP vehicle according to the infrared thermal image graph to obtain a judging result, and if the judging result shows that the incoming vehicle is the AVP vehicle, the judging result is transmitted to the image acquisition unit through the communication unit;
the working flow of the main control computer for obtaining the judging result comprises the following steps: judging whether an infrared thermal image of a driver exists in the infrared thermal image captured by the infrared thermal imager; when the vehicle is an AVP vehicle, the infrared thermal imager can only capture infrared thermal imaging of the entering vehicle;
the image acquisition unit consists of a plurality of monocular cameras which are hoisted on a parking lot suspension, and is used for receiving the judgment result transmitted by the communication unit and acquiring the AVP vehicle image; extracting license plate information according to the AVP vehicle image, and taking the license plate information as a unique index of the AVP vehicle; transmitting the license plate information to the main control computer through the communication unit;
the work flow for extracting the license plate information by the image acquisition unit comprises the following steps: identifying the moving AVP vehicle by using an image processing technology based on deep learning, performing snapshot, and extracting license plate information of the AVP vehicle by using a license plate identification technology;
the safety early warning unit is used for receiving the license plate information transmitted by the communication unit and reminding other common vehicles of paying attention to avoid safety accidents; the safety early warning unit consists of a plurality of LED alarm lamp belts arranged at two sides of an internal channel of the parking lot; the coverage area of each group of alarm lamp bands corresponds to the visual coverage area of a monocular camera; when the image acquisition unit detects that a vehicle running in the current area exists, the communication unit transmits an image to the main control computer to judge whether license plates are consistent, if the license plates are consistent, the safety early warning unit in the area is started, the LED warning lamp belt in the area is controlled to flash, other common vehicles are reminded, and safety accidents are avoided.
2. An AVP vehicle detection method applied to the detection system of claim 1, characterized by comprising the steps of:
collecting an infrared thermal image of an entering vehicle;
judging the infrared thermal image to obtain a judging result;
acquiring image information of an AVP vehicle according to the judging result, and acquiring license plate information of the AVP vehicle according to the image information;
reminding other entering vehicles to pay attention to avoid the AVP vehicle with the license plate information, and avoiding safety accidents.
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| CN202210967385.3A CN115346377B (en) | 2022-08-12 | 2022-08-12 | AVP vehicle detection system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210967385.3A CN115346377B (en) | 2022-08-12 | 2022-08-12 | AVP vehicle detection system and method |
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| CN115346377A CN115346377A (en) | 2022-11-15 |
| CN115346377B true CN115346377B (en) | 2024-02-09 |
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| JP2007504551A (en) * | 2003-09-03 | 2007-03-01 | ストラテック システムズ リミテッド | Apparatus and method for locating, recognizing and tracking a vehicle in a parking lot |
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| CN104325946A (en) * | 2014-11-28 | 2015-02-04 | 天津博信汽车零部件有限公司 | Vehicle control system based on passage detection |
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