CN112653872B - Flow monitoring system based on high-definition infrared camera - Google Patents
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0022—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation of moving bodies
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- G—PHYSICS
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Abstract
The invention relates to application of an intelligent highway technology in a service area, in particular to a flow monitoring system based on a high-definition infrared camera, which comprises a front terminal system, a network subsystem and a central subsystem, wherein the front terminal system comprises network high-definition cameras deployed at all positions of the service area, the network high-definition cameras are connected with a large-capacity memory to realize transmission of audio and video data to the large-capacity memory, and the front terminal system is used for detecting pedestrian flow and traffic flow data and managing the entrance and exit of vehicles and tourists; the network subsystem adopts hot point wifi to carry out networking on equipment of the front terminal system and transmits the equipment to the central subsystem through the LAN; a network high-definition camera is deployed in a highway service area, data collected by the camera is sent to a cloud server through a wireless network or a wired network, and image data are processed through a controller to obtain information such as pedestrian flow, vehicle flow and the like.
Description
Technical Field
The invention relates to application of an intelligent highway technology in a service area, in particular to a flow monitoring system based on a high-definition infrared camera.
Background
Traffic flow, people flow are huge in the highway service area, and traditional service area only as a driver rest area, for long-distance driving's vehicle and visitor provide refuel, interim rest, like basic service such as lavatory, food and beverage, vapour repairment, through development for many years, service area gradually develops into with internet, thing networking informationization for the characteristic business management, amusement and recreation, appreciation marketing, electronic commerce and trade etc. are amazing, multiple functional novel commercial district.
The intelligent expressway service area is based on a new generation of information communication technology (TCT), and integrates and synthesizes technologies such as cloud computing (SaaS, paaS and IaaS), the Internet of things, the Internet, a personal mobile terminal and artificial intelligence. The intelligent service area is a fusion design of information communication technology and highway traffic development, and aims to meet individual requirements, provide high-quality and high-satisfaction service and realize systematic and intensive management change of integrated sharing and effective utilization of traffic resources and social resources.
The basic data of the intelligent service area is real-time data acquisition of traffic flow and pedestrian flow, the information plays an important role in aspects of criminals seizing, disease propagation control, dangerous goods illegal transportation prevention and the like, the data are not collected in a centralized mode in the traditional service area, informatization is low, and further promotion is urgently needed to meet the requirements of people on intelligent service.
Disclosure of Invention
The invention aims to overcome the technical problems in the prior art, and provides a flow monitoring system based on a high-definition infrared camera.
In order to solve the technical problems, the invention provides the following technical scheme: a flow monitoring system based on a high-definition infrared camera comprises a front terminal system, a network subsystem and a central subsystem, wherein,
the front terminal system comprises network high-definition cameras deployed at various positions of a service area, the network high-definition cameras are connected with a large-capacity storage device to realize audio and video data transmission to the large-capacity storage device, and the front terminal system is used for detecting pedestrian flow and traffic flow data and managing the entrance and exit of vehicles and tourists;
the network subsystem adopts hot point wifi to carry out networking on equipment of the front terminal system and transmits the equipment to the central subsystem through the LAN;
the central subsystem is a passenger flow analysis management platform and comprises a server and a controller, the server is connected with a hot spot wifi through the controller, functions of accessing, storing, inquiring and system operation and maintenance management of front-end data are achieved, and data statistics and analysis of people flow and traffic flow are achieved.
Preferably, the network high-definition camera comprises a wide dynamic gun-shaped camera, a zooming infrared dome camera and a zooming cylinder-shaped camera, wherein when the zooming infrared dome camera collects image information, a person with abnormal temperature is identified, and data are sent to the central subsystem; the wide dynamic gun-shaped camera and the zoom barrel-shaped camera are respectively used for collecting vehicle information and conventional people flow information, the central subsystem is provided with a people flow and vehicle flow threshold value, when the people flow exceeds the threshold value, an alarm is given out, and the gathered people are evacuated in a timely broadcasting manner; when the vehicle flow exceeds the threshold value, the external vehicle is prohibited from entering the parking lot.
Preferably, the network subsystem uses an optical fiber transceiver to transmit the passenger flow data collected by the front-end equipment to the central subsystem.
Preferably, the network high-definition camera adopts face recognition combining snapshot and monitoring.
Preferably, the process that the zooming infrared dome camera senses the body temperature of the tourist is to acquire an original infrared image through a bolometric sensor of the zooming infrared dome camera; then, carrying out temperature normalization processing on the image to eliminate the influence of the environmental temperature on the body temperature change of the tourist; and finally, extracting the face characteristics and judging whether the body temperature of the person is abnormal or not by setting a threshold value.
Preferably, the temperature normalization processing of the image specifically includes: setting a reference environment temperature, calculating the difference value between the environment temperature of the image and the reference environment temperature by taking the low temperature point in the obtained original infrared image as the environment temperature of the image, and normalizing each temperature point of the obtained image by 0-1 to obtain the temperature change weight of each pixel point; when the difference value of the temperature is larger than 0, subtracting the temperature difference value and the weight of the point from each point in the image, and when the difference value of the temperature is smaller than 0, adding the temperature difference value and the weight of the point to each point in the image to obtain the infrared image after normalization processing.
Preferably, the server in the central subsystem is a cloud server; the server divides and manages the users and stores the user information and the corresponding authority.
The invention has the beneficial effects that: the flow monitoring system based on the high-definition infrared camera deploys the network high-definition camera in the expressway service area, sends data acquired by the camera to the cloud server through a wireless network or a wired network, processes image data through the controller, acquires information such as people flow and vehicle flow, finds suspects who are escaping or identify tourists with abnormal body temperature in time or acquires information such as vehicles with abnormal temperature through operation and monitoring of the data, ensures public safety of the service area and the whole road network, and improves user experience of the service area.
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FIG. 1 is a schematic diagram of the overall architecture of the present invention;
fig. 2 is a block diagram of the present invention.
Description of reference numerals: 1. a front terminal system; 11. a network high definition camera; 12. a mass storage; 13. a wide dynamic gun camera; 14. zooming infrared dome cameras; 15. a zoom barrel type camera; 2. a network subsystem; 21. hot spots wifi; 22. a fiber optic transceiver; 3. a central subsystem; 31. a server; 32. and a controller.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is in no way intended to limit the invention.
A flow monitoring system based on a high-definition infrared camera comprises a front terminal system 1, a network subsystem 2 and a central subsystem 3, wherein,
the front terminal system 1 comprises network high-definition cameras 11 deployed at various positions of a service area, the network high-definition cameras 11 are connected with a large-capacity storage 12, audio and video data are transmitted to the large-capacity storage 12, and the front terminal system 1 is used for detecting people flow and traffic flow data and managing the entering and exiting of vehicles and tourists;
the network subsystem 2 adopts a hot spot wifi21 to carry out networking on the equipment of the front terminal system 1 and transmits the equipment to the central subsystem 3 through the LAN;
the central subsystem 3 is a passenger flow analysis management platform and comprises a server 31 and a controller 32, wherein the server 31 is connected with a hot spot wifi21 through the controller 32, functions of accessing, storing, inquiring and system operation and maintenance management of front-end data are achieved, and data statistics and analysis of people flow and traffic flow are achieved.
The network high-definition camera 11 comprises a wide dynamic gun-shaped camera 13, a zooming infrared dome camera 14 and a zooming cylinder-shaped camera 15, wherein the zooming infrared dome camera 14 identifies people with abnormal temperature when acquiring image information, and sends data to the central subsystem 3; the wide dynamic gun-shaped camera 13 and the zoom barrel-shaped camera 15 are respectively used for collecting vehicle information and conventional people flow information, the central subsystem 3 is provided with a people flow and a vehicle flow threshold, and when the people flow exceeds the threshold, an alarm is given out and the gathered people are broadcasted and evacuated in time; when the vehicle flow exceeds the threshold value, the external vehicle is prohibited from entering the parking lot.
The network subsystem 2 adopts an optical fiber transceiver 22 to transmit passenger flow data collected by the front-end equipment to the central subsystem 3.
The network high-definition camera 11 adopts face recognition combining snapshot and monitoring.
The process that the zooming infrared dome camera 14 senses the body temperature of the tourist is to acquire an original infrared image through a bolometric sensor of the zooming infrared dome camera 14; then, carrying out temperature normalization processing on the image to eliminate the influence of the environmental temperature on the body temperature change of the tourist; and finally, extracting the face features and judging whether the body temperature of the person is abnormal or not by setting a threshold value.
The temperature normalization processing of the image specifically includes: setting a reference environment temperature, calculating the difference value between the environment temperature of the image and the reference environment temperature by taking the low temperature point in the obtained original infrared image as the environment temperature of the image, and normalizing each temperature point of the obtained image by 0-1 to obtain the temperature change weight of each pixel point; when the difference value of the temperature is larger than 0, subtracting the temperature difference value and the weight of the point from each point in the image, and when the difference value of the temperature is smaller than 0, adding the temperature difference value and the weight of the point to each point in the image to obtain the infrared image after normalization processing.
The server in the central subsystem 3 is a cloud server; the server divides and manages the users and stores the user information and the corresponding authority.
Example 1
The invention provides a traffic monitoring system based on a high-definition infrared camera, which comprises a front terminal system, a network subsystem and a central subsystem, wherein,
the front terminal system comprises network high-definition cameras arranged at various positions of a service area, the network high-definition cameras are connected with a large-capacity memory and transmit audio and video data to the memory, and the front terminal system is used for detecting pedestrian flow and traffic flow data and managing the entrance and exit of vehicles and tourists;
the network subsystem adopts hot point wifi to carry out networking on equipment of the front terminal system and transmits the equipment to the central subsystem through the LAN;
the central subsystem is a passenger flow analysis management platform and comprises a server and a controller, the functions of accessing, storing, inquiring and system operation and maintenance management of front-end data are realized, and data statistics and analysis of people flow and traffic flow are realized.
And the server in the central subsystem is a cloud server.
The network high-definition camera is deployed in the expressway service area, the data acquired by the camera is sent to the cloud server through the wireless network or the combination with the wired network, the image data is processed through the controller, the information such as the flow of people and the flow of vehicles is acquired, the data is operated and monitored, the information such as the existence of suspects, the identification of tourists with abnormal body temperature and the acquisition of the information such as vehicles with abnormal temperature is found in time, and the public safety of the service area and the whole road network is ensured.
Further, the network high-definition camera comprises a wide dynamic gun-shaped camera, a zooming infrared dome camera and a zooming cylinder-shaped camera, wherein when the zooming infrared dome camera collects image information, people with abnormal temperature are identified, and data are sent to the central subsystem;
the wide dynamic gun-shaped camera and the zoom barrel-shaped camera are respectively used for acquiring vehicle information and conventional people flow information, the central subsystem is provided with a people flow and a vehicle flow threshold, and when the people flow exceeds the threshold, an alarm is given out and the gathered people are broadcasted and evacuated in time; when the vehicle flow exceeds the threshold value, the outside vehicle is prohibited from entering the parking lot.
The infrastructure monitoring device of this embodiment mainly is used for the security protection control, and the dispatch of people's flow, traffic flow condition mainly includes following function.
1. High definition video image acquisition
The quality of the network high-definition camera video monitoring image reaches 720P (1280 × 720)/1080P (1920 × 1080), and more key information in the image can be acquired. The low-bit-rate 2/4Mbps transmission is adopted, so that the transmission bandwidth and the cost of video storage can be reduced.
2. High definition video display function
The video signal can be watched through the local display of the NVR, and can also be displayed through a pre-installed client on the PC, the definition of a real-time monitoring picture can be improved by adopting the network high-definition camera, and the video monitoring effect is improved.
3. High definition video storage and sharing
The system adopts NVR for local storage, and can set video recording plans, video recording rules (including continuous video recording, mobile detection video recording, alarm linkage video recording) and the like. The authorized user can remotely play back and download the video data from the client, and each security room enjoys different browsing and control rights to each monitoring point image according to different rights distributed by the system.
4. Remote monitoring management
Through the video monitoring network, an authorized user can remotely monitor images of any monitoring point through a local area network or an external network. The authorized user can realize all management control functions of remotely previewing live images, replaying and downloading video data, configuring system parameters and the like through client application software or an IE browser.
The remote monitoring and management department is based on a cloud server and a processor, the client side of a user comprises a computer, a smart phone and the like, and data information can be acquired from the cloud side by logging in each user side device.
Further, the network subsystem adopts an optical fiber transceiver to transmit the passenger flow data collected by the front-end equipment to the central subsystem.
Through the high-speed optical fiber network adopted in the embodiment, users can be added and deleted through the NVR local menu or the client application software, and the control right priority of each level of users can be managed. According to different authorities distributed by the system, users at all levels enjoy different browsing and control authorities to images of monitoring points.
By means of screenshot of interval (1-2 minutes) of videos or an intelligent video detection system, a mobile terminal is used for externally releasing the traffic condition of a real-time service area, a vehicle owner is guided to enter the service area to enjoy service in a peak time period, and the vehicle owner is guided to bypass to the next service area in a peak time period.
Example 2
As another improvement point of the invention, the system can enable the user to obtain the face information, and the network high-definition camera adopts face recognition combining snapshot and monitoring. The process of sensing the body temperature of the tourist through the infrared dome camera is as follows:
firstly, acquiring an original infrared image through a bolometric sensor of the infrared dome camera; then, carrying out temperature normalization processing on the image to eliminate the influence of the environmental temperature on the body temperature change of the tourist; and finally, extracting the face features and judging whether the body temperature of the person is abnormal or not by setting a threshold value.
Further, in the process of carrying out temperature normalization processing on the image, a reference environment temperature is set firstly, the difference value between the environment temperature of the image and the reference environment temperature is calculated by taking the temperature low point in the obtained original infrared image as the environment temperature of the image, and 0-1 normalization is carried out on each temperature point of the obtained image to obtain the temperature change weight of each pixel point; when the difference value of the temperature is greater than 0, subtracting the temperature difference value and the weight of the point from each point in the image, and when the difference value of the temperature is less than 0, adding the temperature difference value and the weight of the point to each point in the image to obtain the infrared image after normalization processing, wherein the following functions can be realized:
1) And monitoring and alarming the intensive people flow.
Especially, the crowd is large in holiday and the crowd density exceeds a threshold value, so that the alarm is automatically given, the crowd is timely broadcasted and evacuated, and the trampling is prevented.
2) And monitoring special crowds.
The highway has large passenger flow and is miscellaneous, the data on the network of the public security department can be compared through face recognition, the network is connected with the local public security department, and the escaping and terrorist are captured in an auxiliary way, and the children of the women who are turned are rescued, and the like.
3) And (4) epidemic prevention and control.
The infrared camera is adopted to provide necessary treatment and inspection for the tourists with abnormal heating.
The solution of the service area passenger flow statistical system mainly comprises a front terminal system, a network subsystem and a central subsystem. And a high-definition camera (which is overlapped with a subsystem six and a monitoring video system) is adopted, and the combination of snapshot and monitoring is realized, so that the human face is identified.
The front-end equipment adopts the passenger flow statistical equipment to carry out passenger flow statistical analysis, and can accurately count information such as the number of passengers coming in and going out of the passage port, regional passenger flow, the flow direction of people and the like. The front end can store more than two years of data and support continuous transmission in a disconnected network. The network subsystem adopts an optical fiber transceiver to transmit the passenger flow data collected by the front-end equipment to the central subsystem. The central platform system mainly comprises a passenger flow analysis management platform, realizes basic management functions of access, storage, query, system operation and maintenance and the like of front-end data, and realizes functions of statistics, analysis and the like of abundant passenger flow data.
The above embodiments are preferred embodiments of the present invention, and those skilled in the art can make variations and modifications to the above embodiments, therefore, the present invention is not limited to the above embodiments, and any obvious improvements, substitutions or modifications made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (2)
1. The utility model provides a flow monitoring system based on high definition infrared camera which characterized in that: comprises a front terminal system (1), a network subsystem (2) and a central subsystem (3), wherein,
the front terminal system (1) comprises network high-definition cameras (11) deployed at various positions of a service area, the network high-definition cameras (11) are connected with a large-capacity memory (12) to realize transmission of audio and video data to the large-capacity memory (12), and the front terminal system (1) is used for detecting pedestrian flow and traffic flow data and managing the entrance and exit of vehicles and tourists;
the network subsystem (2) adopts a hot spot wifi (21) to carry out networking on equipment of the front terminal system (1), and the equipment is transmitted to the central subsystem (3) through the LAN network;
the central subsystem (3) is a passenger flow analysis management platform and comprises a server (31) and a controller (32), wherein the server (31) is connected with a hot spot wifi (21) through the controller (32), so that functions of accessing, storing, inquiring and system operation and maintenance management of front-end data are realized, and data statistics and analysis of people flow and vehicle flow are realized;
the network high-definition camera (11) comprises a wide dynamic gun-shaped camera (13), a zooming infrared dome camera (14) and a zooming cylinder-shaped camera (15), wherein when the zooming infrared dome camera (14) collects image information, a person with abnormal temperature is identified, and data are sent to the central subsystem (3); the wide dynamic gun-shaped camera (13) and the zoom barrel-shaped camera (15) are respectively used for collecting vehicle information and conventional people flow information, the central subsystem (3) is provided with a people flow and a vehicle flow threshold, and when the people flow exceeds the threshold, an alarm is given out and timely broadcasting is carried out to evacuate the crowd; when the traffic flow exceeds a threshold value, prohibiting an external vehicle from driving into the parking lot;
the network subsystem (2) adopts an optical fiber transceiver (22) to transmit passenger flow data acquired by front-end equipment to the central subsystem (3);
the network high-definition camera (11) adopts face recognition combining snapshot and monitoring;
the process that the zooming infrared dome camera (14) senses the body temperature of the tourist is to acquire an original infrared image through a bolometric sensor of the zooming infrared dome camera (14); then, carrying out temperature normalization processing on the image to eliminate the influence of the environmental temperature on the body temperature change of the tourist; finally, extracting the face characteristics and judging whether the body temperature of the person is abnormal or not by setting a threshold value;
the temperature normalization processing of the image specifically comprises the following steps: setting a reference environment temperature, calculating the difference value between the environment temperature of the image and the reference environment temperature by taking the low temperature point in the obtained original infrared image as the environment temperature of the image, and normalizing the obtained temperature points of the image by 0-1 to obtain the temperature change weight of each pixel point; when the difference value of the temperature is larger than 0, subtracting the temperature difference value and the weight of the point from each point in the image, and when the difference value of the temperature is smaller than 0, adding the temperature difference value and the weight of the point to each point in the image to obtain the infrared image after normalization processing.
2. The flow monitoring system based on the high-definition infrared camera as claimed in claim 1, wherein: the server in the central subsystem (3) is a cloud server; the server divides and manages the users and stores the user information and the corresponding authority.
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