CN112511801A - Method for retrieving videos of auxiliary monitoring system by railway telecontrol monitoring system - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
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Abstract
The invention provides a method for a railway telecontrol monitoring system to retrieve videos of an auxiliary monitoring system, which comprises the following steps: the method comprises the following steps: s1, adding an interface server A in the telemechanical monitoring system, adding an interface server B in the auxiliary monitoring system, and interconnecting the interface server A and the interface server B; s2, the interface server A is connected with a workstation and an application server in the telemechanical monitoring system through a communication line; and S3, the interface server B is connected with a streaming media server of the auxiliary monitoring system, and the streaming media server is used for collecting, caching, scheduling, transmitting and playing video contents and storing videos. The method for retrieving the video of the auxiliary monitoring system by the railway telecontrol monitoring system accesses the related video of the auxiliary monitoring system through technologies such as plug flow, pull flow, interface access identity verification and the like, realizes multi-angle real-time video retrieval of the controlled electric equipment, and ensures the accuracy of monitoring information and the reliability of operation.
Description
Technical Field
The invention belongs to the technical field of rail transit, and particularly relates to a method for a railway telecontrol monitoring system to retrieve videos of an auxiliary monitoring system.
Background
The telemechanical monitoring system, also called as data acquisition and monitoring control system, is mainly applied to power systems and electrified railway systems, and can perform real-time monitoring on remote field power equipment to realize functions of data acquisition, monitoring, scheduling, parameter measurement, signal alarm and the like.
The auxiliary monitoring system, namely the transformer substation auxiliary monitoring system, is specially used for realizing integration, optimization, management and control of various auxiliary production systems of the transformer substation, the auxiliary production systems comprise videos, fire control systems, air conditioners, power environments, anti-theft alarms, access control systems and the like, and the auxiliary monitoring system can monitor real-time videos and audios of the transformer substation and can also carry out routing inspection on meter, appearance and temperature measurement of equipment in the transformer substation through various arranged cameras.
The telecontrol monitoring system is used as a special automatic system in the railway power industry, has wider application and relatively mature technical development, realizes the centralized monitoring and control of power equipment, ensures the safe and reliable power supply of the electrified railway, and is basically installed in each railway power supply section. Meanwhile, various auxiliary production devices of the transformer substation also need to be monitored and controlled in a centralized manner, the auxiliary monitoring system can exert the characteristics of the auxiliary monitoring system to meet the requirements, the auxiliary monitoring system is more and more emphasized and is gradually installed and configured in the power supply section, and centralized auxiliary monitoring is performed on the transformer substation to which the auxiliary monitoring system belongs.
The telemechanical monitoring system and the auxiliary monitoring system have different development histories, different safety requirements and different monitoring devices, and are respectively and independently installed and operated under most conditions (see fig. 1), but the information sharing requirements for the two systems are increasingly enhanced in the power dispatching process, for example, after the telemechanical monitoring system sends a remote control instruction to a certain power device, the telemechanical monitoring system hopes to acquire field videos of the power device from multiple angles by connecting the auxiliary monitoring system, and dispatchers comprehensively analyze and judge according to the operation process, the real-time state and the image information of the device to ensure the accuracy and the reliability of remote control operation, so that the problems of interconnection (see fig. 2) of the two systems and information sharing, particularly cross-system video retrieval, need to be solved urgently.
Disclosure of Invention
In view of the above, in order to overcome the above drawbacks, the present invention is directed to a method for a railway telecontrol monitoring system to retrieve videos of an auxiliary monitoring system.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method for retrieving videos of an auxiliary monitoring system by a railway telecontrol monitoring system comprises the following steps:
s1, adding an interface server A in the telemechanical monitoring system, adding an interface server B in the auxiliary monitoring system, and interconnecting the interface server A and the interface server B;
s2, the interface server A is connected with a workstation and an application server in the telemechanical monitoring system through a communication line;
and S3, the interface server B is connected with a streaming media server of the auxiliary monitoring system, and the streaming media server is used for collecting, caching, scheduling, transmitting and playing video contents and storing videos.
Further, the method for acquiring the video monitoring configuration information of the controlled substation comprises the following steps:
a1, a workstation of the telemechanical monitoring system appoints a controlled station, and sends request data for acquiring the camera information of the controlled station to the interface server A;
a2, interface server A encrypts the request data and sends it to interface server B;
a3, interface server B sends request data to flow media server after verifying the request is legal;
a4, the stream media server inquires the pre-configured camera information data according to the request information sent by the interface server B;
a5, the streaming media server sends the camera information data to the interface server B;
a6, interface server B receives the camera data returned by the streaming media server, and forwards the data to interface server A;
a7, interface server A transmits data to the remote monitoring system workstation;
a8, the telemechanical monitoring system workstation acquires information and displays the camera of the controlled station and preset positions of the camera in a tree form.
Further, the method for retrieving the monitoring video of the controlled transformer substation comprises the following steps:
b1, a telecontrol monitoring system workstation, appointing a camera of a controlled station, and initiating a request for retrieving the video of the camera to the interface server A;
b2, the interface server A encrypts the request data and sends the request data to the interface server B;
b3, the interface server B sends the request data to the streaming media server after verifying that the request is legal;
b4, the streaming media server accesses the NVR of the controlled station, acquires the video and returns a video streaming address to the interface server B;
b5, the interface server B converts the video stream address into the address corresponding to the interface server A;
b6, the interface server A sends the address to the remote monitoring system workstation in the same network segment with the interface server A;
b7, at the same time as the step B6, the interface server B carries out the push flow work, the video flow is pushed to the address of the interface server A from the streaming media server address, and at the same time, the interface server A carries out the corresponding pull flow work
B8, the telecontrol system workstation can access the address on the interface server a directly to retrieve the required video stream.
Further, the method for skipping the preset position of the camera is as follows:
c1, designating a camera of a controlled station to jump to a designated preset position, and sending a request for jumping the preset position of the camera to the interface server A by the telecontrol monitoring system workstation;
c2, the interface server A encrypts the request data and sends the request data to the interface server B;
c3, interface server B sends request to flow media server after verifying that the request is legal;
c4, the streaming media server accesses the NVR of the controlled station; appointing a related camera to turn to a related preset position, and returning a result to the interface server B;
c5, interface server B receives the result returned by the streaming media server, and forwards the result to server A;
c6, interface server A returns the result to the telemechanical system monitoring workstation after receiving the result.
Further, an access identity authentication method is also arranged between the interface server A and the interface server B, and the specific steps are as follows:
d1: in the connection framework of the two systems, the auxiliary monitoring system is a requested person, and in order to avoid the request person from being illegally accessed or illegally accessing videos, the auxiliary monitoring system interface server B needs to perform signature verification firstly when being requested each time so as to judge whether the request identity is legal or not;
d2: distributing an access identifier, accessKey, and an encryption identifier, SecretKey, to an interface server A, wherein the two identifiers are stored in the interface server A and an interface server B at the same time;
d3: before sending a request to an interface server B, an interface server A firstly merges a SecretKey and a request parameter character string, and then generates a Hash value by using an MD5 encryption algorithm, namely a Sign signature is formed;
d4: the interface server A combines the request parameters, the Access Key and the sign signature to form a new access request and sends the new access request to the interface server B;
d5: the interface server B receives an access request of the interface server A, and acquires a request parameter, an Access Key and a sign signature;
d6: the interface server B finds the corresponding SecretKey locally according to the Access Key;
d7: combining the SecretKey and the request parameter character string, and then generating a Hash value by using an MD5 encryption algorithm, namely forming a new Sign signature;
d8: and (5) comparing the new Sign signature with the Sign signature from the interface server A obtained in the step (5), if the new Sign signature is the same as the Sign signature obtained in the step (5), the request identity is legal, and if the new Sign signature is not legal, the access is denied.
Compared with the prior art, the method for the railway telecontrol monitoring system to retrieve the video of the auxiliary monitoring system has the following advantages:
the method for retrieving the video of the auxiliary monitoring system by the railway telecontrol monitoring system solves the problem that the telecontrol monitoring system cannot intuitively retrieve the related video of the monitored power equipment, accesses the related video of the auxiliary monitoring system through technologies such as stream pushing, stream pulling, interface encryption identity verification and the like, realizes multi-angle real-time video retrieval of the controlled power equipment, and ensures the accuracy of monitoring information and the reliability of operation; the general traditional technical scheme is that a stream media server is synchronously added in a telecontrol monitoring system, so that the server and the stream media server of an auxiliary monitoring system synchronously store video information of a controlled station, but the stream media server is not added in the telecontrol monitoring system, and the stream media server of the auxiliary monitoring system is accessed only when a monitoring workstation needs to retrieve related videos of the controlled station to retrieve the related videos, so that the purchase cost of the stream media server is saved, the retrieval efficiency can be improved, the network bandwidth consumption is reduced, the consideration in multiple aspects is realized, the scheduling personnel in a power supply section can be helped to accurately grasp the condition of monitoring equipment, and the intuitiveness, the convenience and the accuracy of monitoring operation are obviously improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a current state diagram of a power section telemechanical monitoring system and an auxiliary monitoring system;
FIG. 2 is a connection diagram of a power supply section telemechanical monitoring system and an auxiliary monitoring system;
fig. 3 is a detailed structural diagram of a power supply section telemechanical monitoring system and an auxiliary monitoring system.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The patent provides a method for reading videos in a cross-network section and cross-system mode in the field of electrified railway traction power supply scheduling control, namely a method for connecting a telemechanical monitoring system with an auxiliary monitoring system and reading video monitoring videos of a controlled transformer substation from the auxiliary monitoring system, which adopts the following detailed scheme:
1) a system connection step:
referring to FIG. 3, a detailed connection diagram of a power supply section telemechanical monitoring system and an auxiliary monitoring system
Step 1: adding (or using) an original interface server (called interface server A for short) in a telecontrol monitoring system, adding (or using) an original interface server (called interface server B for short) in an auxiliary monitoring system, and interconnecting the interface server A and the interface server B;
step 2: the interface server A is connected with a workstation and an application server in the telemechanical monitoring system;
and step 3: the interface server B is connected with an original streaming media server of the auxiliary monitoring system (the streaming media server controls video equipment of each controlled station, collects, caches, schedules, transmits and plays video contents and stores the video);
2) the access identity authentication method between the interface servers comprises the following steps:
step 1: in the connection framework of the two systems, the auxiliary monitoring system is a requested person, and in order to avoid the request person from being illegally accessed or illegally accessing videos, the auxiliary monitoring system interface server B needs to perform signature verification first when being requested each time so as to judge whether the request identity is legal or not.
Step 2: distributing Access Key (visitor identification, unique whole network) and SecretKey (encrypted identification, unique whole network) to the interface server A, wherein the two identifications are stored in the interface server A and the interface server B at the same time
And step 3: before sending a request to an interface server B, the interface server A firstly merges the SecretKey and the request parameter character string, and then generates a Hash value by using an MD5 encryption algorithm, namely, a Sign signature is formed
And 4, step 4: the interface server A combines the request parameters, the Access Key and the sign signature to form a new access request and sends the new access request to the interface server B
And 5: the interface server B receives the access request of the interface server A to obtain the request parameters, the Access Key and the sign signature
Step 6: the interface server B finds the SecretKey corresponding to the AccessKey locally according to the AccessKey
And 7: merging SecretKey and request parameter character string, then using MD5 encryption algorithm to generate Hash value, namely forming new Sign signature
And 8: and (5) comparing the new Sign signature with the Sign signature from the interface server A obtained in the step (5), if the new Sign signature is the same as the Sign signature obtained in the step (5), the request identity is legal, and if the new Sign signature is not legal, the access is denied.
3) Acquiring video monitoring configuration information of a controlled substation:
step 1: the telemechanical monitoring system workstation appoints a controlled station and sends request data for acquiring the camera information of the controlled station to the interface server A;
step 2: the interface server A encrypts the request data and sends the encrypted request data to the interface server B;
and step 3: the interface server B sends request data to the streaming media server after verifying that the request is legal;
and 4, step 4: the streaming media server inquires the pre-configured camera information data according to the request information sent by the interface server B; (ii) a
And 5: the streaming media server sends the camera information data to an interface server B;
step 6: the interface server B receives the camera data returned by the streaming media server and forwards the data to the interface server A;
and 7: the interface server A forwards data to a telemechanical monitoring system workstation;
and 8: and the telemechanical monitoring system workstation acquires information and displays the camera of the controlled station and preset positions of the camera according to a tree form.
Table 1 request data structure
Table 2 request data description
Table 3 return data structure
Table 4 data description returned
4) Retrieving the monitoring video of the controlled transformer substation:
step 1: the telemechanical monitoring system workstation designates a camera of a controlled station and initiates a request for retrieving the video of the camera to the interface server A;
step 2: the interface server A encrypts the request data and sends the encrypted request data to the interface server B;
and step 3: the interface server B sends request data to the streaming media server after verifying that the request is legal;
and 4, step 4: the streaming media server accesses a controlled station NVR (network video recorder), acquires a video and returns a video streaming address rtmp to the interface server B;
and 5: the interface server B converts the video stream address rtmp into an address rtmp-trans corresponding to the interface server A;
step 6: the interface server A sends the address rtmp-trans to a telemechanical monitoring system workstation (which is in the same network segment with the interface server A);
and 7: simultaneously with the step 6, the interface server B carries out stream pushing work, the video stream is pushed to the address rtmp-trans of the interface server A from the address rtmp of the streaming media server, and meanwhile, the interface server A carries out corresponding stream pulling work;
and 8: the telemechanical system workstation can access the rtmp-trans address on the interface server a directly to retrieve the required video stream.
Table 5 request data structure
Table 6 request data description
Table 7 return data structure
Table 8 returns data description
5) Jumping of preset positions of the camera:
step 1: the telemechanical monitoring system workstation designates one camera of a controlled station to jump to a designated preset position, and sends a request for jumping the preset position of the camera to the interface server A;
step 2: the interface server A encrypts the request and sends the encrypted request to the interface server B;
and step 3: the interface server B sends the request to the streaming media server after verifying that the request is legal
And 4, step 4: the streaming media server appoints the relevant camera to turn to the relevant preset position by accessing the controlled station NVR (network video recorder), and returns the result to the interface server B.
And 5: and the interface server B receives the result returned by the streaming media server and forwards the result to the server A.
Step 6: and the interface server A returns the result to the telemechanical system monitoring workstation after receiving the result.
Table 9 request data structure
Table 10 request data description
Table 11 returns a data description
The invention aims to provide a method for a telemechanical monitoring system to retrieve videos of an auxiliary monitoring system, namely, the cross-system video retrieval is realized through the interconnection of a power supply section telemechanical monitoring system and the auxiliary monitoring system, request message encryption transmission and stream pushing and pulling means.
When a power supply section telemechanical monitoring system workstation wants to retrieve a monitored video of a controlled station, first, request data for obtaining the camera information of the controlled station is sent, an interface server is used for transferring the request data to a streaming media server for auxiliary monitoring after identity verification, information such as the number, serial numbers and preset positions of all cameras in the station is obtained, and the information is returned to the telemechanical monitoring system workstation through the interface server. The remote monitoring system workstation selects the camera, sends a retrieval request, transfers the retrieval request to the streaming media server for auxiliary monitoring by the interface server, the latter accesses a Network Video Recorder (NVR) of the controlled station to acquire the video and returns a video stream address to the interface server, the interface server performs push-pull stream work and converts the video stream address into a video stream address which is a local address to be sent to the remote monitoring system workstation, and the latter acquires and displays the required video through the address.
The problem of the related video of the monitored electric equipment is realized by accessing the related video of the auxiliary monitoring system, so that the multi-angle real-time video retrieval of the controlled electric equipment is realized, and the accuracy of monitoring information and the reliability of operation are ensured.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A method for retrieving videos of an auxiliary monitoring system by a railway telecontrol monitoring system is characterized by comprising the following steps: the method comprises the following steps:
s1, adding an interface server A in the telemechanical monitoring system, adding an interface server B in the auxiliary monitoring system, and interconnecting the interface server A and the interface server B;
s2, the interface server A is connected with a workstation and an application server in the telemechanical monitoring system through a communication line;
and S3, the interface server B is connected with a streaming media server of the auxiliary monitoring system, and the streaming media server is used for collecting, caching, scheduling, transmitting and playing video contents and storing videos.
2. The method for the railway telecontrol monitoring system to review the auxiliary monitoring system video as claimed in claim 1, wherein the method for obtaining the video monitoring configuration information of the controlled substation is as follows:
a1, a workstation of the telemechanical monitoring system appoints a controlled station, and sends request data for acquiring the camera information of the controlled station to the interface server A;
a2, interface server A encrypts the request data and sends it to interface server B;
a3, interface server B sends request data to flow media server after verifying the request is legal;
a4, the stream media server inquires the pre-configured camera information data according to the request information sent by the interface server B;
a5, the streaming media server sends the camera information data to the interface server B;
a6, interface server B receives the camera data returned by the streaming media server, and forwards the data to interface server A;
a7, interface server A transmits data to the remote monitoring system workstation;
a8, the telemechanical monitoring system workstation acquires information and displays the camera of the controlled station and preset positions of the camera in a tree form.
3. The method for looking up the video of the auxiliary monitoring system by the railway telecontrol monitoring system as claimed in claim 1, wherein the method for looking up the video of the controlled substation is as follows:
b1, a telecontrol monitoring system workstation, appointing a camera of a controlled station, and initiating a request for retrieving the video of the camera to the interface server A;
b2, the interface server A encrypts the request data and sends the request data to the interface server B;
b3, the interface server B sends the request data to the streaming media server after verifying that the request is legal;
b4, the streaming media server accesses the NVR of the controlled station, acquires the video and returns a video streaming address to the interface server B;
b5, the interface server B converts the video stream address into the address corresponding to the interface server A;
b6, the interface server A sends the address to the remote monitoring system workstation in the same network segment with the interface server A;
b7, at the same time as the step B6, the interface server B carries out the push flow work, the video flow is pushed to the address of the interface server A from the streaming media server address, and at the same time, the interface server A carries out the corresponding pull flow work
B8, the telecontrol system workstation can access the address on the interface server a directly to retrieve the required video stream.
4. The method for the railway telecontrol monitoring system to retrieve the video of the auxiliary monitoring system as claimed in claim 1, wherein the method for the preset bit of the camera to jump is as follows:
c1, designating a camera of a controlled station to jump to a designated preset position, and sending a request for jumping the preset position of the camera to the interface server A by the telecontrol monitoring system workstation;
c2, the interface server A encrypts the request data and sends the request data to the interface server B;
c3, interface server B sends request to flow media server after verifying that the request is legal;
c4, the streaming media server accesses the NVR of the controlled station; appointing a related camera to turn to a related preset position, and returning a result to the interface server B;
c5, interface server B receives the result returned by the streaming media server, and forwards the result to server A;
c6, interface server A returns the result to the telemechanical system monitoring workstation after receiving the result.
5. The method for the railway telecontrol monitoring system to review the video of the auxiliary monitoring system as claimed in claim 1, wherein: an access identity verification method is also arranged between the interface server A and the interface server B, and the method comprises the following specific steps:
d1: in the connection framework of the two systems, the auxiliary monitoring system is a requested person, and in order to avoid the request person from being illegally accessed or illegally accessing videos, the auxiliary monitoring system interface server B needs to perform signature verification firstly when being requested each time so as to judge whether the request identity is legal or not;
d2: distributing an access identifier, accessKey, and an encryption identifier, SecretKey, to an interface server A, wherein the two identifiers are stored in the interface server A and an interface server B at the same time;
d3: before sending a request to an interface server B, an interface server A firstly merges a SecretKey and a request parameter character string, and then generates a Hash value by using an MD5 encryption algorithm, namely a Sign signature is formed;
d4: the interface server A combines the request parameters, the Access Key and the sign signature to form a new access request and sends the new access request to the interface server B;
d5: the interface server B receives an access request of the interface server A, and acquires a request parameter, an Access Key and a sign signature;
d6: the interface server B finds the corresponding SecretKey locally according to the Access Key;
d7: combining the SecretKey and the request parameter character string, and then generating a Hash value by using an MD5 encryption algorithm, namely forming a new Sign signature;
d8: and (5) comparing the new Sign signature with the Sign signature from the interface server A obtained in the step (5), if the new Sign signature is the same as the Sign signature obtained in the step (5), the request identity is legal, and if the new Sign signature is not legal, the access is denied.
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