CN111836201A

CN111836201A - Alarm method, system and device

Info

Publication number: CN111836201A
Application number: CN202010538412.6A
Authority: CN
Inventors: 覃才俊; 陈杰; 李宏刚; 王艳辉
Original assignee: Visionvera Information Technology Co Ltd
Current assignee: Visionvera Information Technology Co Ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2020-10-27
Anticipated expiration: 2040-06-12
Also published as: CN111836201B

Abstract

The embodiment of the invention provides an alarm method, an alarm system and an alarm device, wherein the method comprises the following steps: the gateway server can confirm the position information that the video network terminal corresponds based on the parameter information that fingerprint storehouse and video network terminal correspond, the state at the video network terminal is forbidding the mobile state, and under the condition that position information or parameter information change, generate and send out forbid video network terminal signal and alarm information, the video network equipment has been improved no matter dispose in which kind of occasion and which kind of place, the security of long-term unmanned on watch's video network equipment, the risk of stolen getting or using has been reduced.

Description

Alarm method, system and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an alarm method, system, and apparatus.

Background

Because the video networking technology can realize real-time transmission of full-network high-definition audio and video, the video networking obtains the consistent praise of users by virtue of excellent high-definition video interaction technology, safety, high reliability and the like. Video networking equipment is often deployed in a variety of locations and places, often left unattended for extended periods of time, and while the equipment itself is stable, there is still a risk of theft or theft.

Disclosure of Invention

In view of the above, embodiments of the present invention are proposed in order to provide an alarm method, system and apparatus that overcome or at least partially address the above-mentioned problems.

In order to solve the above problem, an embodiment of the present invention provides an alarm method, where the method includes:

determining position information corresponding to the video network terminal based on a fingerprint library and parameter information corresponding to the video network terminal;

generating and sending out a video network forbidden terminal signal and alarm information under the condition that the state of the video network terminal is a movement forbidden state and the position information or the parameter information is changed;

the parameter information comprises received signal strength indication information, coordinate information, video network terminal name information and physical address information.

Optionally, after determining the location information corresponding to the video network terminal based on the fingerprint library and the parameter information corresponding to the video network terminal, the method further includes:

and under the condition that the state of the video network terminal is the state allowing movement, resetting the parameter information corresponding to the video network terminal, and updating to obtain the current parameter information.

Optionally, the determining, based on the fingerprint library and the parameter information, location information corresponding to the terminal of the internet of view includes:

determining a first fingerprint based on a location fingerprint positioning algorithm in combination with the received signal strength indication information in the parameter information;

determining a second fingerprint in the fingerprint repository that matches the first fingerprint;

and determining the position information corresponding to the video network terminal based on the second fingerprint and the position fingerprint positioning algorithm.

In order to solve the above problem, an embodiment of the present invention provides an alarm system, where the alarm system includes a video network terminal and a network management server, and the method includes:

the video network terminal establishes a fingerprint database;

the video network terminal determines parameter information corresponding to the video network terminal;

the video network terminal sends the parameter information to the network management server at intervals of preset interval duration;

the network management server determines the position information corresponding to the video network terminal based on the fingerprint database and the parameter information;

and under the condition that the state of the video network terminal is a movement forbidding state and the position information or the parameter information is changed, the network management server generates and sends out a video network terminal forbidding signal and alarm information.

Optionally, the sending, by the video networking terminal, the parameter information to the network management server every preset interval duration includes:

under the condition that the wired network is communicated, the video network terminal sends the related parameters to the network management server every other preset interval time through the wired network;

and under the condition that the wired network is not connected, the video network terminal sends the related parameters to the network management server every other preset interval time through a wireless network.

Optionally, after the network management server determines the location information corresponding to the video network terminal based on the fingerprint library and the parameter information, the method further includes:

and under the condition that the state of the video network terminal is a moving-allowed state, the network management server resets the parameter information corresponding to the video network terminal, and updates to obtain the current parameter information.

In order to solve the above problem, an embodiment of the present invention provides an alarm device, where the alarm device includes:

the determining module is used for determining the position information corresponding to the video network terminal based on the fingerprint database and the parameter information corresponding to the video network terminal;

the generation module is used for generating and sending out a video network forbidden terminal signal and alarm information under the condition that the state of the video network forbidden terminal is a moving forbidden state and the position information or the parameter information is changed;

Optionally, the apparatus further comprises:

and the updating module is used for resetting the parameter information corresponding to the video network terminal under the condition that the state of the video network terminal is a movement-allowed state, and updating to obtain the current parameter information.

In order to solve the above problem, an embodiment of the present invention provides an electronic device, including:

one or more processors; and

one or more machine readable media having instructions stored thereon that, when executed by the one or more processors, cause the apparatus to perform the above-described alert method.

In order to solve the above problem, an embodiment of the present invention provides a computer-readable storage medium storing a computer program that causes a processor to execute the above alarm method.

The embodiment of the invention has the following advantages:

in the embodiment of the invention, the gateway server can determine the position information corresponding to the video network terminal based on the fingerprint library and the parameter information corresponding to the video network terminal, and generates and sends out the signal and the alarm information of the video network terminal forbidden to be moved under the condition that the state of the video network terminal is the forbidden moving state and the position information or the parameter information is changed, thereby improving the safety of the video network equipment which is unattended for a long time no matter where the video network equipment is deployed, and reducing the risk of being stolen or stolen.

Drawings

FIG. 1 is a flow chart illustrating the steps of an alarm method according to an embodiment of the present invention;

fig. 2 is a schematic view of a scene of RSSI fingerprinting location provided by an embodiment of the present invention;

FIG. 3 is a flow chart illustrating the steps of an alarm method according to a second embodiment of the present invention;

FIG. 4 is a flow chart illustrating steps of an alarm system according to a third embodiment of the present invention;

FIG. 5 is a flow chart of an alarm system provided by an embodiment of the present invention;

fig. 6 shows a block diagram of an alarm device according to a fourth embodiment of the present invention;

FIG. 7 illustrates a networking diagram of a video network of the present invention;

FIG. 8 is a diagram illustrating a hardware architecture of a node server according to the present invention;

fig. 9 shows a hardware configuration diagram of an access switch of the present invention;

fig. 10 is a schematic diagram illustrating a hardware structure of an ethernet protocol conversion gateway according to the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Referring to fig. 1, a flowchart illustrating steps of an alarm method according to an embodiment of the present invention is shown, which may specifically include the following steps:

step 501, determining position information corresponding to the video network terminal based on the fingerprint database and the parameter information corresponding to the video network terminal.

The fingerprint library refers to position fingerprint information corresponding to the positions of all the video network terminals acquired by the video network terminals in an off-line stage.

Optionally, after the terminal of the video network is normally started and enters the video network, the peripheral device may be scanned by the terminal of the video network and/or a bluetooth module of the bluetooth Signal generator to obtain name information, physical address information, Received Signal Strength Indication (RSSI) information and coordinate information of each terminal of the video network. And packing the name information, the physical address information, the signal strength indication information and the coordinate information of each video network terminal at specified time intervals (which can be 5 to 10 seconds) according to a video network protocol format, and sending the packed information to a network management server.

Optionally, if the surrounding area belongs to a closed area or the number of terminals in the video networking is greater than or equal to three, the network management server may determine the first fingerprint directly based on the location fingerprint positioning algorithm in combination with the received signal strength indication information in the parameter information; determining a second fingerprint in the fingerprint library that matches the first fingerprint; and determining the position information corresponding to the video network terminal based on the second fingerprint and the position fingerprint positioning algorithm.

Optionally, if the surrounding does not belong to a closed area, or the number of terminals in the video network is less than three, a bluetooth signal generator needs to be added, so that the network management server determines a first fingerprint based on a position fingerprint positioning algorithm by combining received signal strength indication information in the parameter information; determining a second fingerprint in the fingerprint library that matches the first fingerprint; and determining the position information corresponding to the video network terminal based on the second fingerprint and the position fingerprint positioning algorithm.

Specifically, after the video network terminal and/or the bluetooth signal generator are deployed, the video network terminal may be started, the a value required by RSSI calculation is determined and configured in the video network terminal, and the n value may be set to 2.9, where the a value and the n value need to be determined continuously through site testing, environmental attenuation factors of different sites are different, and sometimes, the environmental attenuation factors are also influenced to a great extent by the obstruction of an object in the same site. However, the values a and n may be set to default values at the same site, and the distance of the relative distance may be determined approximately.

The RSSI information is part of the radio transmission layer and can be used to determine the quality of the connection and to determine whether the broadcast transmission strength needs to be increased. The distance between a signal point and a receiving point is measured through the strength of the received signal, positioning calculation is carried out according to relevant data, the RSSI information is used for ranging, an A value and an n value must be known, the A value is a wireless signal strength value received by the receiving node when the wireless transceiving node is one meter away, the n value is a propagation factor of a wireless signal, the A value and the n value are experience values, and the specific values are closely related to the specifically used hardware node and the wireless signal propagation environment, so that the A value and the n value are calibrated in the specific application environment before ranging, the higher the calibration accuracy is, and the higher the ranging and positioning accuracy is.

Referring to fig. 2, a schematic view of a RSSI fingerprint location scenario provided by an embodiment of the present invention is shown, where RSSI fingerprint location relates a location of an environment to a specific fingerprint, one or more features are stored in the fingerprint, and in actual location, coordinates of an adapted fingerprint are obtained by matching a plurality of features obtained in practice with features in the fingerprint, so as to obtain location, and RSSI fingerprint location is generally used in indoor location. Specifically, fingerprint positioning using RSSI generally includes two phases, an offline phase and an online phase, in the offline phase, in order to collect fingerprints at various positions, a database can be constructed, a tedious survey needs to be performed in a specified area, and collected data can also be referred to as a training set. In the online phase, the system will estimate the location of the mobile device to be located. The position coordinates obtained in indoor positioning usually refer to coordinates in a local coordinate system in the current environment, and are not latitude and longitude, and the establishment of the corresponding relation between the position and the fingerprint is usually performed in an off-line stage. Specifically, the following will describe in detail a scene diagram of RSSI fingerprinting location shown in fig. 2.

As shown in fig. 2, a geographic area is covered by a rectangular network, and in this scenario, there are 4 rows and 8 columns of grids (total 32 grid points), and 2 Access Points (APs), which are used for communication and positioning. At each mesh point, the average Received Signal Strength (RSS) from each AP may be obtained over a period of data samples (e.g., 5 to 15 minutes, acquired approximately once per second), which may have different orientations and angles for the mobile device. In the scenario shown in fig. 2, the fingerprint at a grid point is a two-dimensional vector (rho — 1, rho — 2), where (rho — i) is the average RSS from the (i) th AP. As will be seen later, we can also record the distribution of RSS samples (or some other statistical parameter such as standard deviation) as fingerprints, and this completes the creation of fingerprint database.

In addition, three-point positioning is usually adopted, that is, coordinates of three known beacons (which may be terminals of the internet of view) are known, and further, distances from the beacons are obtained through the RSSI of the three beacons, that is, the positioned coordinates can be obtained, that is, the position information corresponding to the internet of view can be determined.

It should be noted that the RSSI of the three-point positioning can be acquired by the bluetooth signal of the video network device.

After determining the location information corresponding to the terminal of the video network based on the fingerprint database and the parameter information corresponding to the terminal of the video network, step 502 is executed.

And 502, generating and sending out a video network forbidden terminal signal and alarm information under the condition that the state of the video network forbidden terminal is a movement forbidden state and the position information or the parameter information is changed.

Optionally, the network management server determines the position information corresponding to the video network terminal, determines the state of the video network terminal, and generates and sends a video network terminal forbidding signal and alarm information when the state of the video network terminal is a movement forbidding state, that is, the video network terminal has no movement permission, and the position information of the video network terminal changes.

Wherein, the alarm information can be an alarm which is sounded and/or reminding information which is displayed when the video network terminal is lost.

Optionally, after determining the position information corresponding to the video network terminal, the network management server determines the state of the video network terminal, and generates and sends a video network terminal forbidden signal and alarm information when the state of the video network terminal is a video network forbidden state, that is, no mobile permission exists in the video network terminal, and the video network terminal name information and/or physical address information in the parameter information of the video network terminal are changed, and at this time, the network management server performs network access forbidden processing on the corresponding video network terminal, and kicks the video network terminal out.

Referring to fig. 3, a flowchart illustrating steps of an alarm method according to a second embodiment of the present invention is shown, which may specifically include the following steps:

step 601, determining the position information corresponding to the video network terminal based on the fingerprint library and the parameter information corresponding to the video network terminal.

In a preferred embodiment, the step 601 may be implemented by the following sub-steps:

sub-step 6011, based on the location fingerprint positioning algorithm, determines the first fingerprint by combining the received signal strength indication information in the parameter information.

As shown in fig. 2, a geographic area is covered by a rectangular network, and in this scenario, there are 4 rows and 8 columns of grids (total 32 grid points), and 2 Access Points (APs), which are used for communication and positioning. At each mesh point, the average Received Signal Strength (RSS) from each AP may be obtained over a period of data samples (e.g., 5 to 15 minutes, acquired approximately once per second), which may have different orientations and angles for the mobile device. In the scenario shown in fig. 2, the fingerprint at a grid point is a two-dimensional vector (rho — 1, rho — 2), where (rho — i) is the average RSS from the (i) th AP. The distribution of the RSS samples (or some other statistical parameters, such as standard deviation) can also be recorded as the fingerprint, which completes the establishment of the fingerprint library and acquires the fingerprint of the terminal of the video network.

Sub-step 6012, a second fingerprint is determined in the fingerprint repository that matches the first fingerprint.

The above description of sub-step 6011 describes a fingerprint database establishment procedure, then the network management server may determine a second fingerprint matching the first fingerprint in the fingerprint database, and perform sub-step 6013.

And a substep 6013, determining the position information corresponding to the terminal of the video network based on the second fingerprint and a position fingerprint positioning algorithm.

Based on the location fingerprint positioning algorithm, the location corresponding to the second fingerprint can be estimated as the location corresponding to the terminal of the video network, and then the location information corresponding to the terminal of the video network can be determined based on the location information.

After determining the location information corresponding to the video network terminal based on the fingerprint library and the parameter information corresponding to the video network terminal, step 602 is executed or step 603 is executed.

Step 602, generating and sending out a video network forbidden terminal signal and alarm information under the condition that the state of the video network forbidden terminal is a movement forbidden state and the position information or the parameter information is changed.

Step 603, under the condition that the state of the video network terminal is the state allowing movement, the parameter information corresponding to the video network terminal is reset, and the current parameter information is obtained by updating.

Optionally, after determining the position information corresponding to the video network terminal, the network management server determines the state of the video network terminal, and resets the parameter information corresponding to the video network terminal when the state of the video network terminal is a movement-allowed state, that is, the video network terminal has a movement permission, and updates the current parameter information.

In the embodiment of the invention, the gateway server can determine the position information corresponding to the video network terminal based on the fingerprint library and the parameter information corresponding to the video network terminal, generate and send out the signal and the alarm information of the forbidden video network terminal under the condition that the state of the video network terminal is the forbidden mobility state and the position information or the parameter information is changed, reset the parameter information corresponding to the video network terminal under the condition that the state of the video network terminal is the allowed mobility state, update the current parameter information, improve the safety of the video network equipment which is unattended for a long time no matter where the video network equipment is deployed, and reduce the risk of being stolen or stolen.

Referring to fig. 4, a flowchart illustrating steps of an alarm system according to a third embodiment of the present invention is shown, and an alarm system according to a third embodiment of the present invention includes a video network terminal and a network management server, which are connected to each other, and specifically includes the following steps:

step 701, the video network terminal establishes a fingerprint database.

Step 702, the terminal of the video network determines the parameter information corresponding to the terminal of the video network.

Optionally, after the terminal of the video network is normally started and enters the video network, the peripheral device may be scanned by the terminal of the video network and/or a bluetooth module of the bluetooth Signal generator to obtain name information, physical address information, Received Signal Strength Indication (RSSI) information and coordinate information of each terminal of the video network.

And 703, the video network terminal sends the parameter information to the network management server every other preset interval duration.

Optionally, under the condition that the wired network is connected, the video network terminal sends the relevant parameters to the network management server through the wired network at intervals of preset interval duration;

optionally, the video networking terminal sends the relevant parameters to the network management server through the wireless network at preset interval time intervals under the condition that the wired network is not connected.

The video network terminal can pack the name information, the physical address information, the signal strength indication information and the coordinate information of each video network terminal at specified time intervals (which can be 5 to 10 seconds) according to a video network protocol format and send the packed information to a network management server.

Step 704, the network management server determines the corresponding position information of the video network terminal based on the fingerprint database and the parameter information.

Step 705, under the condition that the state of the video network terminal is the movement forbidding state and the position information or the parameter information is changed, the network management server generates and sends out a video network terminal forbidding signal and alarm information.

Step 706, the network management server resets the parameter information corresponding to the video network terminal when the state of the video network terminal is the state allowing movement, and updates the current parameter information.

Fig. 5 shows a flowchart of an alarm system according to an embodiment of the present invention, as shown in fig. 5, the alarm system includes a video network terminal 801, a core switching server 802 and a network management server 803 that are connected to each other, the video network terminal 801 completes device network access through the core switching server 802, the gateway server completes addition of fingerprints of the video network terminal in a fingerprint library, and the video network terminal scans RSSI, video network terminal name information (device list) and physical address information (MAC address), the video network terminal 801 reports the above information to the network management server 803, and the network management server 803 sends the video network terminal prohibited from being moved to the core switching server 802.

In the embodiment of the invention, the video network terminal establishes the fingerprint library, determines the parameter information corresponding to the video network terminal, sends the parameter information to the network management server at intervals of preset interval duration, the network management server determines the position information corresponding to the video network terminal based on the fingerprint library and the parameter information, when the state of the video network terminal is a movement forbidding state and the position information or the parameter information is changed, the network management server generates and sends out a video network terminal forbidding signal and alarm information, under the condition that the state of the video networking terminal is the state allowing movement, the network management server resets the parameter information corresponding to the video networking terminal, updates to obtain the current parameter information, improves the safety of the video networking equipment which is unattended for a long time no matter where the video networking equipment is deployed and where the video networking equipment is deployed, and reduces the risk of being stolen or stolen.

It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.

Referring to fig. 6, which shows a block diagram of an alarm apparatus according to a fourth embodiment of the present invention, the apparatus 900 specifically includes:

a determining module 901, configured to determine, based on the fingerprint library and parameter information corresponding to the video network terminal, location information corresponding to the video network terminal;

a generating module 902, configured to generate and send a video network forbidden terminal signal and alarm information when the state of the video network terminal is a movement forbidden state and the position information or the parameter information changes;

Optionally, the apparatus further comprises:

and the updating module is used for resetting the parameter information corresponding to the video network terminal under the condition that the state of the video network terminal is the movement-allowed state, and updating to obtain the current parameter information.

Optionally, the determining module includes:

the first determining submodule is used for determining a first fingerprint based on a position fingerprint positioning algorithm and by combining received signal strength indication information in the parameter information;

a second determining sub-module for determining a second fingerprint matching the first fingerprint in the fingerprint library;

and the third determining submodule is used for determining the position information corresponding to the video network terminal based on the second fingerprint and the position fingerprint positioning algorithm.

In the embodiment of the invention, the gateway server can determine the position information corresponding to the video network terminal based on the fingerprint library and the parameter information corresponding to the video network terminal through the determination module, and then generate and send out the signal and the alarm information of the forbidden video network terminal under the condition that the state of the video network terminal is the movement forbidden state and the position information or the parameter information is changed through the generation module, so that the safety of the video network equipment which is unattended for a long time is improved no matter where the video network equipment is deployed, and the risk of being stolen or stolen is reduced.

For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.

An embodiment of the present invention further provides an electronic device, including:

one or more processors; and

one or more machine readable media having instructions stored thereon that, when executed by one or more processors, cause an apparatus to perform the alert method as described above.

The embodiment of the invention also provides a computer readable storage medium, which stores a computer program for enabling a processor to execute the alarm method.

The video networking is an important milestone for network development, is a real-time network, can realize high-definition video real-time transmission, and pushes a plurality of internet applications to high-definition video, and high-definition faces each other.

The video networking adopts a real-time high-definition video exchange technology, can integrate required services such as dozens of services of video, voice, pictures, characters, communication, data and the like on a system platform on a network platform, such as high-definition video conference, video monitoring, intelligent monitoring analysis, emergency command, digital broadcast television, delayed television, network teaching, live broadcast, VOD on demand, television mail, Personal Video Recorder (PVR), intranet (self-office) channels, intelligent video broadcast control, information distribution and the like, and realizes high-definition quality video broadcast through a television or a computer.

To better understand the embodiments of the present invention, the following description refers to the internet of view:

some of the technologies applied in the video networking are as follows:

network Technology (Network Technology)

Network technology innovation in video networking has improved over traditional Ethernet (Ethernet) to face the potentially enormous video traffic on the network. Unlike pure network Packet Switching (Packet Switching) or network circuit Switching (circuit Switching), the Packet Switching is adopted by the technology of the video networking to meet the Streaming requirement. The video networking technology has the advantages of flexibility, simplicity and low price of packet switching, and simultaneously has the quality and safety guarantee of circuit switching, thereby realizing the seamless connection of the whole network switching type virtual circuit and the data format.

Switching Technology (Switching Technology)

The video network adopts two advantages of asynchronism and packet switching of the Ethernet, eliminates the defects of the Ethernet on the premise of full compatibility, has end-to-end seamless connection of the whole network, is directly communicated with a user terminal, and directly bears an IP data packet. The user data does not require any format conversion across the entire network. The video networking is a higher-level form of the Ethernet, is a real-time exchange platform, can realize the real-time transmission of the whole-network large-scale high-definition video which cannot be realized by the existing Internet, and pushes a plurality of network video applications to high-definition and unification.

Server Technology (Server Technology)

The server technology on the video networking and unified video platform is different from the traditional server, the streaming media transmission of the video networking and unified video platform is established on the basis of connection orientation, the data processing capacity of the video networking and unified video platform is independent of flow and communication time, and a single network layer can contain signaling and data transmission. For voice and video services, the complexity of video networking and unified video platform streaming media processing is much simpler than that of data processing, and the efficiency is greatly improved by more than one hundred times compared with that of a traditional server.

Storage Technology (Storage Technology)

The super-high speed storage technology of the unified video platform adopts the most advanced real-time operating system in order to adapt to the media content with super-large capacity and super-large flow, the program information in the server instruction is mapped to the specific hard disk space, the media content is not passed through the server any more, and is directly sent to the user terminal instantly, and the general waiting time of the user is less than 0.2 second. The optimized sector distribution greatly reduces the mechanical motion of the magnetic head track seeking of the hard disk, the resource consumption only accounts for 20% of that of the IP internet of the same grade, but concurrent flow which is 3 times larger than that of the traditional hard disk array is generated, and the comprehensive efficiency is improved by more than 10 times.

Network Security Technology (Network Security Technology)

The structural design of the video network completely eliminates the network security problem troubling the internet structurally by the modes of independent service permission control each time, complete isolation of equipment and user data and the like, generally does not need antivirus programs and firewalls, avoids the attack of hackers and viruses, and provides a structural carefree security network for users.

Service Innovation Technology (Service Innovation Technology)

The unified video platform integrates services and transmission, and is not only automatically connected once whether a single user, a private network user or a network aggregate. The user terminal, the set-top box or the PC are directly connected to the unified video platform to obtain various multimedia video services in various forms. The unified video platform adopts a menu type configuration table mode to replace the traditional complex application programming, can realize complex application by using very few codes, and realizes infinite new service innovation.

Networking of the video network is as follows:

the video network is a centralized control network structure, and the network can be a tree network, a star network, a ring network and the like, but on the basis of the centralized control node, the whole network is controlled by the centralized control node in the network.

As shown in fig. 7, the video network is divided into an access network and a metropolitan network.

The devices of the access network part can be mainly classified into 3 types: node server, access switch, terminal (including various set-top boxes, coding boards, memories, etc.). The node server is connected to an access switch, which may be connected to a plurality of terminals and may be connected to an ethernet network.

The node server is a node which plays a centralized control function in the access network and can control the access switch and the terminal. The node server can be directly connected with the access switch or directly connected with the terminal.

Similarly, devices of the metropolitan network portion may also be classified into 3 types: a metropolitan area server, a node switch and a node server. The metro server is connected to a node switch, which may be connected to a plurality of node servers.

The node server is a node server of the access network part, namely the node server belongs to both the access network part and the metropolitan area network part.

The metropolitan area server is a node which plays a centralized control function in the metropolitan area network and can control a node switch and a node server. The metropolitan area server can be directly connected with the node switch or directly connected with the node server.

Therefore, the whole video network is a network structure with layered centralized control, and the network controlled by the node server and the metropolitan area server can be in various structures such as tree, star and ring.

The access network part can form a unified video platform (the part in the dotted circle), and a plurality of unified video platforms can form a video network; each unified video platform may be interconnected via metropolitan area and wide area video networking.

Video networking device classification

1.1 devices in the video network of the embodiment of the present invention can be mainly classified into 3 types: servers, switches (including ethernet gateways), terminals (including various set-top boxes, code boards, memories, etc.). The video network as a whole can be divided into a metropolitan area network (or national network, global network, etc.) and an access network.

1.2 wherein the devices of the access network part can be mainly classified into 3 types: node servers, access switches (including ethernet gateways), terminals (including various set-top boxes, code boards, memories, etc.).

The specific hardware structure of each access network device is as follows:

a node server:

as shown in fig. 8, the system mainly includes a network interface module 201, a switching engine module 202, a CPU module 203, and a disk array module 204;

the network interface module 201, the CPU module 203, and the disk array module 204 all enter the switching engine module 202; the switching engine module 202 performs an operation of looking up the address table 205 on the incoming packet, thereby obtaining the direction information of the packet; and stores the packet in a queue of the corresponding packet buffer 206 based on the packet's steering information; if the queue of the packet buffer 206 is nearly full, it is discarded; the switching engine module 202 polls all packet buffer queues for forwarding if the following conditions are met: 1) the port send buffer is not full; 2) the queue packet counter is greater than zero. The disk array module 204 mainly implements control over the hard disk, including initialization, read-write, and other operations on the hard disk; the CPU module 203 is mainly responsible for protocol processing with an access switch and a terminal (not shown in the figure), configuring an address table 205 (including a downlink protocol packet address table, an uplink protocol packet address table, and a data packet address table), and configuring the disk array module 204.

The access switch:

as shown in fig. 9, the network interface module (downlink network interface module 301, uplink network interface module 302), switching engine module 303 and CPU module 304 are mainly included;

wherein, the packet (uplink data) coming from the downlink network interface module 301 enters the packet detection module 305; the packet detection module 305 detects whether the Destination Address (DA), the Source Address (SA), the packet type, and the packet length of the packet meet the requirements, and if so, allocates a corresponding stream identifier (stream-id) and enters the switching engine module 303, otherwise, discards the stream identifier; the packet (downstream data) coming from the upstream network interface module 302 enters the switching engine module 303; the incoming data packet of the CPU module 304 enters the switching engine module 303; the switching engine module 303 performs an operation of looking up the address table 306 on the incoming packet, thereby obtaining the direction information of the packet; if the packet entering the switching engine module 303 is from the downstream network interface to the upstream network interface, the packet is stored in the queue of the corresponding packet buffer 307 in association with the stream-id; if the queue of the packet buffer 307 is nearly full, it is discarded; if the packet entering the switching engine module 303 is not from the downlink network interface to the uplink network interface, the data packet is stored in the queue of the corresponding packet buffer 307 according to the guiding information of the packet; if the queue of the packet buffer 307 is nearly full, it is discarded.

The switching engine module 303 polls all packet buffer queues, which in this embodiment of the present invention is divided into two cases:

if the queue is from the downlink network interface to the uplink network interface, the following conditions are met for forwarding: 1) the port send buffer is not full; 2) the queued packet counter is greater than zero; 3) obtaining a token generated by a code rate control module;

if the queue is not from the downlink network interface to the uplink network interface, the following conditions are met for forwarding: 1) the port send buffer is not full; 2) the queue packet counter is greater than zero.

The rate control module 308 is configured by the CPU module 304, and generates tokens for packet buffer queues from all downstream network interfaces to upstream network interfaces at programmable intervals to control the rate of upstream forwarding.

The CPU module 304 is mainly responsible for protocol processing with the node server, configuration of the address table 306, and configuration of the code rate control module 308.

Ethernet protocol conversion gateway：

As shown in fig. 10, the system mainly includes a network interface module (a downlink network interface module 401 and an uplink network interface module 402), a switching engine module 403, a CPU module 404, a packet detection module 405, a rate control module 408, an address table 406, a packet buffer 407, a MAC adding module 409, and a MAC deleting module 410.

Wherein, the data packet coming from the downlink network interface module 401 enters the packet detection module 405; the packet detection module 405 detects whether the ethernet MAC DA, the ethernet MAC SA, the ethernet length or frame type, the video network destination address DA, the video network source address SA, the video network packet type, and the packet length of the packet meet the requirements, and if so, allocates a corresponding stream identifier (stream-id); then, the MAC deletion module 410 subtracts MAC DA, MAC SA, length or frame type (2byte) and enters the corresponding receiving buffer, otherwise, discards it;

the downlink network interface module 401 detects the sending buffer of the port, and if there is a packet, obtains the ethernet MAC DA of the corresponding terminal according to the destination address DA of the packet, adds the ethernet MAC DA of the terminal, the MACSA of the ethernet coordination gateway, and the ethernet length or frame type, and sends the packet.

The other modules in the ethernet protocol gateway function similarly to the access switch.

A terminal:

the system mainly comprises a network interface module, a service processing module and a CPU module; for example, the set-top box mainly comprises a network interface module, a video and audio coding and decoding engine module and a CPU module; the coding board mainly comprises a network interface module, a video and audio coding engine module and a CPU module; the memory mainly comprises a network interface module, a CPU module and a disk array module.

1.3 devices of the metropolitan area network part can be mainly classified into 2 types: node server, node exchanger, metropolitan area server. The node switch mainly comprises a network interface module, a switching engine module and a CPU module; the metropolitan area server mainly comprises a network interface module, a switching engine module and a CPU module.

2. Video networking packet definition

2.1 Access network packet definition

The data packet of the access network mainly comprises the following parts: destination Address (DA), Source Address (SA), reserved bytes, payload (pdu), CRC.

As shown in the following table, the data packet of the access network mainly includes the following parts:

DA

SA

Reserved

Payload

CRC

wherein:

the Destination Address (DA) is composed of 8 bytes (byte), the first byte represents the type of the data packet (such as various protocol packets, multicast data packets, unicast data packets, etc.), there are 256 possibilities at most, the second byte to the sixth byte are metropolitan area network addresses, and the seventh byte and the eighth byte are access network addresses;

the Source Address (SA) is also composed of 8 bytes (byte), defined as the same as the Destination Address (DA);

the reserved byte consists of 2 bytes;

the payload part has different lengths according to different types of datagrams, and is 64 bytes if the datagram is various types of protocol packets, and is 32+1024 or 1056 bytes if the datagram is a unicast packet, of course, the length is not limited to the above 2 types;

the CRC consists of 4 bytes and is calculated in accordance with the standard ethernet CRC algorithm.

2.2 metropolitan area network packet definition

The topology of a metropolitan area network is a graph and there may be 2, or even more than 2, connections between two devices, i.e., there may be more than 2 connections between a node switch and a node server, a node switch and a node switch, and a node switch and a node server. However, the metro network address of the metro network device is unique, and in order to accurately describe the connection relationship between the metro network devices, parameters are introduced in the embodiment of the present invention: a label to uniquely describe a metropolitan area network device.

In this specification, the definition of the Label is similar to that of the Label of MPLS (Multi-Protocol Label Switch), and assuming that there are two connections between the device a and the device B, there are 2 labels for the packet from the device a to the device B, and 2 labels for the packet from the device B to the device a. The label is classified into an incoming label and an outgoing label, and assuming that the label (incoming label) of the packet entering the device a is 0x0000, the label (outgoing label) of the packet leaving the device a may become 0x 0001. The network access process of the metro network is a network access process under centralized control, that is, address allocation and label allocation of the metro network are both dominated by the metro server, and the node switch and the node server are both passively executed, which is different from label allocation of MPLS, and label allocation of MPLS is a result of mutual negotiation between the switch and the server.

As shown in the following table, the data packet of the metro network mainly includes the following parts:

DA

SA

Reserved

label (R)

Payload

CRC

Namely Destination Address (DA), Source Address (SA), Reserved byte (Reserved), tag, payload (pdu), CRC. The format of the tag may be defined by reference to the following: the tag is 32 bits with the upper 16 bits reserved and only the lower 16 bits used, and its position is between the reserved bytes and payload of the packet.

Based on the characteristics of the video network, one of the core concepts of the embodiment of the invention is provided, the gateway server can determine the position information corresponding to the video network terminal based on the fingerprint library and the parameter information corresponding to the video network terminal, and generates and sends out the signal and the alarm information of the video network forbidden terminal under the condition that the state of the video network terminal is the movement forbidden state and the position information or the parameter information is changed, so that the safety of the video network equipment which is unattended for a long time regardless of which occasion and which place the video network equipment is deployed is improved, and the risk of being stolen or stolen is reduced.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.

The above detailed description is given to an alarm method, system and device provided by the present invention, and the principle and implementation of the present invention are explained in the present document by applying specific examples, and the description of the above embodiments is only used to help understanding the method and core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A method of alerting, the method comprising:

2. The method according to claim 1, after determining the location information corresponding to the terminal of the video network based on the fingerprint database and the parameter information corresponding to the terminal of the video network, further comprising:

3. The method according to claim 1, wherein the determining the corresponding location information of the terminal of the video network based on the fingerprint library and the parameter information comprises:

4. An alarm system is characterized in that the alarm system comprises a video network terminal and a network management server which are connected, and the method comprises the following steps:

the video network terminal establishes a fingerprint database;

under the condition that the state of the video network terminal is a movement forbidding state and the position information or the parameter information is changed, the network management server generates and sends out a video network terminal forbidding signal and alarm information;

5. The system according to claim 4, wherein the sending of the parameter information to the network management server by the video networking terminal every preset interval duration comprises:

6. The system according to claim 4, after the network management server determines the location information corresponding to the terminal of the video network based on the fingerprint library and the parameter information, further comprising:

7. An alarm device, characterized in that the device comprises:

8. The apparatus of claim 7, further comprising:

9. An electronic device, comprising:

one or more processors; and

one or more machine readable media having instructions stored thereon that, when executed by the one or more processors, cause the apparatus to perform the alert method of any of claims 1 to 3.

10. A computer-readable storage medium storing a computer program for causing a processor to execute the alarm method according to any one of claims 1 to 3.