Airborne video monitoring system based on optical fiber Ethernet automatic position matching

Abstract

The invention provides an airborne video monitoring system based on optical fiber Ethernet automatic position matching, and belongs to the technical field of airborne video monitoring networks. A photoelectric conversion module; a network switching unit; a video scheduling distribution unit; a video encoding and decoding unit; and the video encoding and decoding unit is used for reading a specified video clip in the data storage unit according to the instruction, decoding and playing back the specified video clip, and sending the specified video clip to the video scheduling and distributing unit for outputting and displaying. According to the system, the IP address can be automatically configured according to the installation position of the camera, and the IP address corresponds to the mapping of the installation physical port; the camera is assembled and disassembled by the system without maintenance, the camera realizes position identification according to the installation position, and characters at the corresponding position are superposed on a video picture through the video scheduling distribution unit.

Description

Technical Field

[0001] This invention belongs to the field of airborne video surveillance network technology, specifically relating to an airborne video surveillance system based on fiber optic Ethernet automatic position matching. Background Technology

[0002] Traditional video surveillance systems employ a combination of multiple cameras and a network video management unit. The cameras are the end nodes of the video surveillance network, while the network video management unit contains a network switch and a video management and processing unit. The technical mechanism of the network switch can only identify the logical ports through which devices are connected; to associate them with physical locations, manual labeling or electronic tags on the end devices are required.

[0003] However, camera components of the same model in an airborne video surveillance system need to be interchangeable. When cameras are disassembled and randomly installed in different locations, if they need to be associated with physical locations, manual reconfiguration is required on the camera end based on the agreed interface control file according to the physical location of the installation. Obviously, this does not meet the requirements of interchangeability for users and airborne equipment. Furthermore, the need for manual reconfiguration of parameters for each installation reduces the maintainability of the product and brings challenges to its reliability. Summary of the Invention

[0004] The purpose of this invention is to provide an airborne video surveillance system based on automatic location configuration using fiber optic Ethernet. This system requires that cameras of the same model, when installed in different locations, can automatically identify the video position of the cameras connected to the video network and overlay a location marker onto the video. This eliminates the need for manual configuration of the camera's physical position each time it is mounted, improving product maintainability and reliability.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an airborne video surveillance system based on fiber optic Ethernet automatic position matching, comprising: Multiple cameras are used to capture scenes and output video; The photoelectric conversion module receives optical signals from Ethernet and converts them into electrical signals. The photoelectric conversion module is equipped with multiple optical fiber receiving MPO / MT interfaces and multiple Ethernet electrical signal output interfaces. The network switching unit is used to convert the input signal into a signal that conforms to the Ethernet standard and process the physical layer Ethernet protocol to realize network exchange communication and message transmission between the camera and the video scheduling and allocation unit. The video scheduling and allocation unit, in order to control the physical port switching of the network switching unit, packages the IP addresses of the corresponding physical ports and sends them to the cameras based on the interface control file according to the number and type of installed cameras, thereby configuring the camera network IP addresses; it receives camera video and outputs the corresponding camera images according to instructions, and overlays the text labels of the corresponding physical installation locations onto the video images; The video encoding and decoding unit communicates with the video scheduling and allocation unit and is used to compress and encode the video signal output by the video scheduling and allocation unit and write the encoded video into the data storage unit through the PCIe bus. The data storage unit communicates with the video encoding / decoding unit and is used to record video data to a storage disk. The video encoding / decoding unit is configured to read a specified video segment from the data storage unit according to instructions, decode and play it back, and then send it to the video scheduling and allocation unit for output and display.

[0006] The airborne video surveillance system based on automatic position matching via fiber optic Ethernet provided by this invention also has the following technical features: the camera includes an optical lens, a CMOS sensor, an FPGA imaging circuit, and a fiber optic output circuit; the camera receives broadcast messages from the video scheduling and allocation unit via fiber optic Ethernet communication and configures its own network IP address.

[0007] The airborne video surveillance system based on fiber optic Ethernet automatic position matching provided by this invention also has the following technical features: the photoelectric conversion module is also used to receive Ethernet bus data output by the camera, with light as the medium, and after converting the video into an electrical signal, it is transmitted to the video scheduling and distribution unit.

[0008] The airborne video surveillance system based on fiber optic Ethernet automatic position matching provided by the present invention also has the following technical features: the video scheduling and allocation unit includes multiple logic management units, each logic management unit includes a set of programmable logic devices and a corresponding number of double-rate synchronous dynamic random access memories; each logic management unit supports at least 16 video processing capabilities.

[0009] The airborne video surveillance system based on fiber optic Ethernet automatic position matching provided by the present invention also has the following technical features: the video encoding and decoding unit includes a SOC, DDR, power support circuit, SPI Flash, clock and reset circuit, and supports H.264 and H.265 encoding formats.

[0010] The airborne video surveillance system based on fiber optic Ethernet automatic position matching provided by this invention also has the following technical feature: the data storage unit is high-speed NVMe storage, including an NVMe protocol controller, for supporting data interaction between the chip front-end interface and PCIe. The system is equipped with multiple data storage units, which together form a data storage array to expand the storage capacity.

[0011] The airborne video surveillance system based on fiber optic Ethernet automatic location matching provided by this invention also has the following technical feature: the camera network IP address configuration includes: The video scheduling and allocation unit is logically configured with network IP broadcast settings. After the system is powered on and started, it detects the actual connection status of the network switch. By controlling the network switch ports, the camera connected to port 0 is turned on, while the network connections of the other n-1 ports are turned off. The network configuration IP of port 0 is then packaged and broadcast. At this time, the camera installed at position 0 receives the network IP address from port 0 and configures its own IP address according to the conventions of the interface control file. Next, turn on the camera under port 1, and at the same time turn off the network interfaces of the other n-1 ports. Then, package and broadcast the network configuration IP of port 1. At this time, the camera installed at position 1 receives the network IP address from port 1 and configures its own IP address according to the convention of the interface control file. All ports are traversed once to ensure that all connected cameras are configured before the system configuration is checked a second time to confirm that there are no duplicate IP addresses.

[0012] The airborne video surveillance system based on automatic location matching via fiber optic Ethernet provided by this invention also has the following technical features: the camera starts up according to the IP address information configured during the last power-on. If it does not receive a data packet sent by the video scheduling and allocation unit, it runs according to the IP address configured during the last power-on. If it receives a configuration data packet broadcast by the video scheduling and allocation unit within 3 minutes of power-on, it reconfigures its own IP address according to the IP address information specified in the data packet, and performs a handshake feedback after configuration.

[0013] Beneficial effects: The system provided by this invention can automatically configure the IP address according to the camera's installation location, and the IP address and the physical port of installation are mapped accordingly; the system can remove and install cameras without maintenance; the camera can identify its location according to its installation location, and the corresponding character is superimposed on the video screen through the video scheduling and allocation unit; when the camera does not receive a valid data packet IP address, it configures the IP address configured at the last power-on startup to ensure the camera's location identification and communication functions when it restarts due to abnormal power failure. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of an airborne video surveillance system based on automatic location configuration via fiber optic Ethernet, according to a specific embodiment of the present invention. Figure 2 This is a schematic diagram of a fiber optic Ethernet bus data hardware connection configuration in a specific embodiment of the present invention; Figure 3 This is a schematic diagram of a network port allocation logic control method in a specific embodiment of the present invention. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent changes or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0017] In the description of the embodiments of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention.

[0018] Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0019] The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of these terms in this invention based on the specific circumstances.

[0020] like Figure 1-3 As shown, this embodiment of the invention provides an airborne video surveillance system based on automatic location matching via fiber optic Ethernet, comprising: Multiple cameras are used to capture scenes and output video; The photoelectric conversion module receives optical signals from Ethernet and converts them into electrical signals. The photoelectric conversion module is equipped with multiple optical fiber receiving MPO / MT interfaces and multiple Ethernet electrical signal output interfaces. The network switching unit is used to convert the input signal into a signal that conforms to the Ethernet standard and process the physical layer Ethernet protocol to realize network exchange communication and message transmission between the camera and the video scheduling and allocation unit. The video scheduling and allocation unit, in order to control the physical port switching of the network switching unit, packages the IP addresses of the corresponding physical ports and sends them to the cameras based on the interface control file according to the number and type of installed cameras, thereby configuring the camera network IP addresses; it receives camera video and outputs the corresponding camera images according to instructions, and overlays the text labels of the corresponding physical installation locations onto the video images; The video encoding and decoding unit communicates with the video scheduling and allocation unit and is used to compress and encode the video signal output by the video scheduling and allocation unit and write the encoded video into the data storage unit through the PCIe bus. The data storage unit communicates with the video encoding / decoding unit and is used to record video data to a storage disk. The video encoding / decoding unit is configured to read a specified video segment from the data storage unit according to instructions, decode and play it back, and then send it to the video scheduling and allocation unit for output and display.

[0021] In some embodiments, the camera includes an optical lens, a CMOS sensor, an FPGA imaging circuit, and an optical fiber output circuit. The camera receives broadcast messages from the video scheduling and allocation unit via optical fiber Ethernet communication and configures its own network IP address.

[0022] In some embodiments, the photoelectric conversion module is also used to receive Ethernet bus data output from the camera, with light as the medium. After converting the video into an electrical signal, it is transmitted to the video scheduling and allocation unit. The video scheduling and allocation unit can be configured according to the port of the network switching unit and automatically allocate network IP addresses to each camera according to the port. The video scheduling and allocation unit can, according to the instructions of the display console, output the specified video to the corresponding display console. For videos that need to be recorded, the video is transmitted to the video encoding and decoding unit, compressed through video encoding, and stored in the data storage unit. The video scheduling and allocation unit can also decode and display the stored video according to the online playback instructions of the display console.

[0023] In some embodiments, the video scheduling and allocation unit includes multiple logic management units, each of which contains a set of programmable logic devices and a corresponding number of double-rate synchronous dynamic random access memories; each logic management unit supports at least 16 video processing capabilities and can expand its video processing capabilities according to the number required by the video network.

[0024] In some embodiments, the logic management unit is used to perform high-speed serial data transmission and reception, network switching port configuration, video bus data generation or parsing, and video data processing.

[0025] In some embodiments, the video encoding / decoding unit includes a SOC, DDR, power support circuit, SPI Flash, clock and reset circuit, and supports H.264 and H.265 encoding formats. The encoded video is written to the data storage unit via the PCIe bus; alternatively, it can read a specified video segment from the data storage unit according to instructions, decode and play it back, and then send it to the logic management unit for processing and display.

[0026] In some embodiments, the data storage unit is high-speed NVMe storage, including an NVMe protocol controller, for supporting data interaction between the chip front-end interface and PCIe. The system is equipped with multiple data storage units, which together form a data storage array to expand the storage capacity.

[0027] In some embodiments, the camera network IP address configuration includes: Logically, the video scheduling and allocation unit is configured with network IP broadcast settings. After the system is powered on and started, it detects the actual connection status of the network switch. Assume that n cameras are connected, all through the network switch, and the connection of the network switch is in a fixed position. By controlling the network switch ports, the camera connected to port 0 is turned on, while the network connections of the other n-1 ports are turned off. The network configuration IP of port 0 is then packaged and broadcast. At this time, the camera installed at position 0 receives the network IP address from port 0 and configures its own IP address according to the conventions of the interface control file (e.g., 192.168.0.1). Next, turn on the camera under port 1, and at the same time turn off the network interfaces of the other n-1 ports. Then, package and broadcast the network configuration IP of port 1. At this time, the camera installed at position 1 receives the network IP address from port 1 and configures its own IP address according to the convention of the interface control file (e.g., 192.168.0.2). All ports are traversed once to ensure that all connected cameras are configured before the system configuration is checked a second time to confirm that there are no duplicate IP addresses.

[0028] At this time, each IP represents the corresponding location information. When the video scheduling and allocation unit receives the camera communication message corresponding to the IP address, it can determine the current installation location of the camera and overlay the corresponding text label on the video channel of the corresponding camera (such as overlaying the character "gate" on the camera image at the gate location).

[0029] In some embodiments, the camera starts up according to the IP address information configured during the last power-on. If it does not receive a data packet sent by the video scheduling and allocation unit, it runs according to the IP address configured during the last power-on. If it receives a configuration data packet broadcast by the video scheduling and allocation unit within 3 minutes of power-on, it reconfigures its own IP address according to the IP address information specified in the data packet, and performs a handshake feedback after configuration.

[0030] In some embodiments, the video scheduling and allocation unit includes at least one FPGA and one DDR; used to perform high-speed serial data transmission and reception, Ethernet bus data generation or parsing, and video data processing functions.

[0031] In some embodiments, the software processing flow is as follows: Figure 3 The specific process is as follows: After the video scheduling and allocation unit's SOC powers on, it reads the location configuration information stored in Flash and sets up the network IP port mapping table according to the configuration information. It receives the number of network ports n reported by the network switch and broadcasts the configuration information from the first port according to the network IP port mapping table. At this time, it sends a broadcast message to the camera installed at the corresponding port. After receiving the configuration information, the camera at this location updates its own IP address and the corresponding imaging parameters and reports the current configuration status. After the configuration of the first port is completed, it continues to broadcast the configuration to the second port, and so on, until all network switch ports are traversed. After all ports are configured, the system powers on, performs a self-test, and reports the current system status and all configuration information.

[0032] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. An airborne video surveillance system based on fiber optic Ethernet automatic position matching, characterized in that, include: Multiple cameras are used to capture scenes and output video; The photoelectric conversion module receives optical signals from Ethernet and converts them into electrical signals. The photoelectric conversion module is equipped with multiple optical fiber receiving MPO / MT interfaces and multiple Ethernet electrical signal output interfaces. The network switching unit is used to convert the input signal into a signal that conforms to the Ethernet standard and process the physical layer Ethernet protocol to realize network exchange communication and message transmission between the camera and the video scheduling and allocation unit. The video scheduling and allocation unit, in order to control the physical port switching of the network switching unit, packages the IP addresses of the corresponding physical ports and sends them to the cameras based on the interface control file according to the number and type of installed cameras, thereby configuring the camera network IP addresses; it receives camera video and outputs the corresponding camera images according to instructions, and overlays the text labels of the corresponding physical installation locations onto the video images; The video encoding and decoding unit communicates with the video scheduling and allocation unit and is used to compress and encode the video signal output by the video scheduling and allocation unit and write the encoded video into the data storage unit through the PCIe bus. The data storage unit communicates with the video encoding / decoding unit and is used to record video data to a storage disk. The video encoding / decoding unit is configured to read a specified video segment from the data storage unit according to instructions, decode and play it back, and then send it to the video scheduling and allocation unit for output and display.

2. The airborne video surveillance system based on fiber optic Ethernet automatic position matching according to claim 1, characterized in that, The camera includes an optical lens, a CMOS sensor, an FPGA imaging circuit, and an optical fiber output circuit. The camera receives broadcast messages from the video scheduling and allocation unit via optical fiber Ethernet communication and configures its own network IP address.

3. The airborne video surveillance system based on fiber optic Ethernet automatic position matching according to claim 1, characterized in that, The photoelectric conversion module is also used to receive Ethernet bus data output by the camera, with light as the medium, and after converting the video into an electrical signal, transmit it to the video scheduling and allocation unit.

4. The airborne video surveillance system based on fiber optic Ethernet automatic position matching according to claim 1, characterized in that, The video scheduling and allocation unit includes multiple logic management units, each of which contains a set of programmable logic devices and a corresponding number of double-rate synchronous dynamic random access memories; each logic management unit supports at least 16 video processing channels.

5. The airborne video surveillance system based on fiber optic Ethernet automatic position matching according to claim 1, characterized in that, The video encoding / decoding unit includes a SOC, DDR, power support circuit, SPI Flash, clock and reset circuit, and supports H.264 and H.265 encoding formats.

6. The airborne video surveillance system based on fiber optic Ethernet automatic position matching according to claim 1, characterized in that, The data storage unit is a high-speed NVMe storage device, containing an NVMe protocol controller to support data interaction between the chip's front-end interface and PCIe. The system is equipped with multiple data storage units, which together form a data storage array to expand the storage capacity.

7. The airborne video surveillance system based on fiber optic Ethernet automatic position matching according to claim 1, characterized in that, The camera network IP address configuration includes: The video scheduling and allocation unit is logically configured with network IP broadcast settings. After the system is powered on and started, it detects the actual connection status of the network switch. By controlling the network switch ports, the camera connected to port 0 is turned on, while the network connections of the other n-1 ports are turned off. The network configuration IP of port 0 is then packaged and broadcast. At this time, the camera installed at position 0 receives the network IP address from port 0 and configures its own IP address according to the conventions of the interface control file. Next, turn on the camera under port 1, and at the same time turn off the network interfaces of the other n-1 ports. Then, package and broadcast the network configuration IP of port 1. At this time, the camera installed at position 1 receives the network IP address from port 1 and configures its own IP address according to the convention of the interface control file. All ports are traversed once to ensure that all connected cameras are configured before the system configuration is checked a second time to confirm that there are no duplicate IP addresses.

8. The airborne video surveillance system based on fiber optic Ethernet automatic position matching according to claim 7, characterized in that, The camera starts up according to the IP address information configured during the last power-on. If it does not receive a data packet sent by the video scheduling and allocation unit, it will operate according to the IP address configured during the last power-on. If it receives a configuration data packet broadcast by the video scheduling and allocation unit within 3 minutes of power-on, it will reconfigure its own IP address according to the IP address information specified in the data packet, and then perform a handshake feedback after configuration.

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