CN111404268A - Remote control system and method for liquid crystal display screen - Google Patents
Remote control system and method for liquid crystal display screen Download PDFInfo
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- CN111404268A CN111404268A CN202010160036.1A CN202010160036A CN111404268A CN 111404268 A CN111404268 A CN 111404268A CN 202010160036 A CN202010160036 A CN 202010160036A CN 111404268 A CN111404268 A CN 111404268A
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- liquid crystal
- streaming media
- driving unit
- cloud platform
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
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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
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/40—Display of information, e.g. of data or controls
Abstract
The invention discloses a remote control system and a method of a liquid crystal display screen, wherein the control system comprises: the device comprises a main station cloud platform, a device access driving unit and a streaming media server; the device access driving unit comprises a virtual liquid crystal connection management module, a drawing instruction module, a streaming media processing module and a system micro-service interface. The control method comprises the following steps: receiving a virtual liquid crystal message sent by target equipment, and driving a drawing instruction module to send a drawing instruction to a streaming media processing module when the virtual liquid crystal message contains a drawing message type; the streaming media processing module performs drawing operation according to the virtual liquid crystal message and pushes a code stream to a streaming media server; and the cloud platform of the master station accesses the service provided by the streaming media server, pulls the virtual liquid crystal picture video stream, and realizes remote display of the liquid crystal display screen picture of the target equipment. The invention can realize remote display and control of the liquid crystal display screen, is applied to operation and maintenance work of secondary equipment of the transformer substation, and can greatly improve operation and maintenance efficiency.
Description
Technical Field
The invention relates to a remote control system and method of a liquid crystal display screen, and belongs to the technical field of power system automation.
Background
The automatic field work of transformer substation mainly comprises secondary maintenance teams and groups, and mainly comprises the work of debugging and acceptance, daily inspection, abnormal defect elimination, technical transformation and the like. At present, each manufacturer generally needs professionals to use a network cable or a serial port line to directly connect equipment on site aiming at the debugging and diagnosis of secondary equipment of an electric power system, and single-machine software is used for debugging and diagnosing, so that the defects of low working efficiency and backward operation and maintenance working technical means exist.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a remote control system and method of a liquid crystal display screen, which are applied to the operation and maintenance of secondary equipment of an electric power system and are beneficial to improving the operation and maintenance working efficiency of the secondary equipment.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
in a first aspect, the invention provides a remote control system of a liquid crystal display, which comprises a master station cloud platform, a streaming media server in bidirectional communication connection with the master station cloud platform, and a device access driving unit in bidirectional communication connection with a liquid crystal display of a target device; the equipment access driving unit comprises a virtual liquid crystal connection management module, a drawing instruction module, a streaming media processing module and a system micro-service interface, wherein the virtual liquid crystal connection management module is in bidirectional communication connection with the master station cloud platform through the system micro-service interface; the drawing instruction module is in bidirectional communication connection with the streaming media server through the streaming media processing module.
With reference to the first aspect, the device access driving unit further includes a keyboard and mouse issuing module, and the keyboard and mouse issuing module is in bidirectional communication connection with the master station cloud platform through a system micro-service interface.
In combination with the first aspect, further, the device access driving unit further includes a status light information module, and the status light information module is in bidirectional communication connection with the master station cloud platform through a system micro-service interface.
With reference to the first aspect, further, the target device includes any one of a measurement and control device, a protection device, a PMU device, and a clock device.
In a second aspect, the present invention provides a method for remotely controlling a liquid crystal display, the method comprising the steps of:
receiving a virtual liquid crystal message sent by target equipment, and driving a drawing instruction module to send a drawing instruction to a streaming media processing module when the virtual liquid crystal message contains a drawing message type;
the streaming media processing module performs drawing operation according to the virtual liquid crystal message and pushes a code stream to a streaming media server;
and the cloud platform of the master station accesses the service provided by the streaming media server, pulls the virtual liquid crystal picture video stream, and realizes remote display of the liquid crystal display screen picture of the target equipment.
With reference to the second aspect, further, before receiving the virtual liquid crystal packet sent by the device, the master cloud platform needs to perform the following operations:
opening a virtual liquid crystal streaming media switch to enable the equipment to be connected with a drawing instruction module of the driving unit and a streaming media processing module;
the trigger device access driving unit addresses the target device through the MAC of the target device and enables the device access driving unit to establish connection with the target device.
With reference to the second aspect, further, the virtual liquid crystal message is an LL C link layer message.
With reference to the second aspect, further, the method further includes:
the master station cloud platform reads L ED lamp states through the device access driving unit, and checks the running, alarming and communication states of the target device in real time.
With reference to the second aspect, further, the method further includes:
and the master station cloud platform sends the key information to the equipment access driving unit, processes the key information and then sends the key information to the target equipment, so that the control of the liquid crystal menu of the target equipment is realized.
With reference to the second aspect, further, the method further includes:
when the virtual liquid crystal of the target equipment is remotely checked and controlled by the cloud platform of the master station, a heartbeat message needs to be sent to the equipment access driving unit;
and when the main station cloud platform exits from the virtual liquid crystal boundary surface, a heartbeat message is not sent, and the equipment access driving unit does not receive the heartbeat message sent by the main station cloud platform corresponding to the target equipment within a preset time range, the connection with the bottom layer device and the connection with the streaming media module are actively disconnected, and related resources are released.
Compared with the prior art, the remote control system and the remote control method for the liquid crystal display screen have the advantages that:
the remote display and control of the liquid crystal display screen of the target equipment can be realized, the remote display and control can be free from the limitation of time and place, the remote display and control system is applied to the operation and maintenance work of the secondary equipment of the transformer substation, different target equipment in each station can be debugged and diagnosed simultaneously, the operation and maintenance efficiency is greatly improved, and the asset use efficiency is greatly improved.
Drawings
Fig. 1 is a schematic block diagram of a remote control system for a liquid crystal display according to an embodiment of the present invention;
FIG. 2 is a flowchart of a method for issuing a drawing command by a drawing command module according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for pushing a codestream to a streaming server by a streaming media processing module.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, a remote control system for a liquid crystal display provided in an embodiment of the present invention mainly includes a master cloud platform, a device access driving unit, and a streaming server.
The device access driving unit is mainly developed by adopting an edge computing framework, is deployed on an edge intelligent gateway by using a container technology and comprises a keyboard and mouse issuing module, a state lamp information module, a virtual liquid crystal connection management module, a drawing instruction module, a streaming media processing module and other functional modules, an HTTP protocol is used between the device access driving unit and a main station cloud platform, a standard Rest API interface is provided for the device access driving unit, the main station cloud platform can access a system micro-service interface provided by the device access driving unit through a B/S framework or a C/S framework, the streaming media processing module pushes a stream to a streaming media server, the main station cloud platform can pull a virtual liquid crystal picture video stream through HTTP/RTSP/RTMP service provided by the streaming media server, the device access driving unit and target equipment establish LL C layer link, and communicate with the target equipment by using the virtual liquid crystal protocol, and the virtual liquid crystal protocol is a self-defined protocol of.
The device access driving unit can be simultaneously accessed to a plurality of target devices of different models, corresponding liquid crystal information, status light information and key information are configured in the device access driving unit according to different devices, the device access driving unit is connected with the target devices corresponding to the bottom layer according to the configuration, an interface UR L provided for the master station cloud platform comprises a device ID identification, and the master station cloud platform accesses different UR L used by different devices.
When the key mouse issuing module receives a key mouse issuing request sent by the main station cloud platform, analyzing key values in the request, judging whether the connection between the equipment access driving unit and the target equipment is normal, if so, assembling key issuing messages to be sent to the target equipment, if not, reestablishing the connection and sending the key issuing messages again, responding key operation after the target equipment receives the key messages, wherein the response delay of the key operation is less than 1 second, and data information on liquid crystal can be checked and the configuration can be modified through a liquid crystal menu on the main station cloud platform, for example: switching of a liquid crystal menu, displaying of numerical values and changing of configuration values.
The state lamp information module is responsible for processing L ED state lamp related data, target equipment triggers L ED lamp state sending according to period or lamp state change, relevant data value in the system memory of drive is updated when equipment access drive unit receives state lamp information, when master station cloud platform calls and acquires the state lamp information interface, equipment access drive unit returns the latest L ED lamp state value to master station cloud platform, master station cloud platform reads L ED lamp state through equipment access drive, the operation of device can be looked over in real time, alarm, state such as communication fault, and the whole operation state of device is mastered fast through the state indicator lamp.
The virtual liquid crystal connection management module is used for driving connection with target equipment and connection processing between a drawing instruction module of the equipment access driving unit and the streaming media processing module, a connection management interface is provided for the main station cloud platform, whether connection is needed or not is determined by the main station cloud platform, when a liquid crystal display screen of the target equipment needs to be remotely checked, the main station cloud platform sends a connection establishment request, and after the equipment access driving unit receives the request, connection with the target equipment and connection with the streaming media processing module are established. The method comprises the steps that when a main station cloud platform checks or controls virtual liquid crystal, heartbeat information is sent to a device access driving unit, the device access driving unit can maintain connection between the device access driving unit and target equipment and connection between the device access driving unit and a streaming media processing module when receiving heartbeat messages, and if the device access driving unit does not receive the heartbeat messages sent by the main station cloud platform corresponding to a certain device within a certain time, connection between the device access driving unit and a bottom layer device and connection between the device access driving unit and the streaming media module are actively disconnected, and related resources are released.
The remote control system provided by the embodiment of the invention can realize remote display and control of the liquid crystal display screen of the target equipment, is not limited by time and place, is applied to operation and maintenance work of secondary equipment of a transformer substation, can simultaneously debug and diagnose different target equipment in each station, greatly improves operation and maintenance efficiency, and greatly improves asset use efficiency. The secondary equipment includes but is not limited to a measurement and control device, a protection device, a PMU device and a clock device.
The embodiment of the invention also provides a remote control method of the liquid crystal display screen, which can be realized by adopting the remote control system and comprises the following steps:
step A), a master station cloud platform slave device access driving unit reads liquid crystal display screen configuration, state lamp configuration and key configuration; the page display can be dynamically adjusted according to the configuration, and when different devices are accessed, the corresponding liquid crystal pictures, status lights and key layouts of the different devices are displayed;
and step B), the cloud platform of the main station opens a virtual liquid crystal streaming media switch, so that the drawing instruction module of the equipment access driving unit is connected with the streaming media processing module, the equipment access driving unit is triggered to be connected with the target equipment, the equipment access driving unit addresses the target equipment through the MAC of the target equipment, and communication can be realized without IP connection. The device access driving unit can be directly connected with the target device, and if a localized virtual liquid crystal display program is developed, the device access driving unit can also be connected with the target device through a virtual liquid crystal AGENT;
step C), the target device sends a virtual liquid crystal message to a device access driving unit, wherein the virtual liquid crystal message is an LL C link layer message, when the message received by the driving unit contains a drawing message type, the device access driving unit generates a drawing instruction and sends the drawing instruction to a streaming media processing module, and the streaming media processing module carries out drawing operation and pushes a code stream to a streaming media server according to a certain frame rate;
step D), the cloud platform of the main station accesses the service provided by the streaming media server, and pulls the virtual liquid crystal picture video stream to achieve the effect of displaying the liquid crystal of the device on the page of the cloud platform in real time; in the embodiment of the invention, the streaming media server can provide HTTP/RTSP/RTMP service;
and step E), the master station cloud platform reads L ED lamp states through the equipment access driving unit, can check the states of the device such as operation, alarm and communication fault in real time, and can quickly master the whole operation state of the device through the state indicating lamp.
Step F), the master station cloud platform sends key information to the equipment access driving unit, and the equipment access driving unit processes the key information and then sends the key information to the target equipment to realize control on a liquid crystal menu of the target equipment; in the embodiment of the invention, the response delay of key operation is less than 1 second, and the data information on the liquid crystal can be checked on the main station cloud platform and the configuration can be modified through the liquid crystal menu.
And G) when the cloud platform of the main station remotely checks and controls the virtual liquid crystal of a certain device, a heartbeat message needs to be sent to the equipment access driving unit, the cloud platform of the main station does not send the heartbeat message when exiting from the boundary surface of the virtual liquid crystal, and the equipment access driving unit does not receive the heartbeat message sent by the cloud platform of the main station corresponding to the target equipment within a certain time, so that the connection with the bottom device and the connection with the streaming media module are actively disconnected, and related resources are released.
In the embodiment of the present invention, the stream pushing to the streaming media server is implemented by a drawing instruction module and a streaming media processing module, and the specific flow is as shown in fig. 2 and fig. 3, the secondary device may periodically send a drawing message to the device driving unit, where the drawing message includes a drawing point, a straight line, a curve, a rectangle, a circle, a text, an erasing rectangle, and an erasing layer. And after receiving the drawing message, the drawing instruction module analyzes the drawing message, and if the connection with the streaming media processing module is established, the drawing instruction module sends the drawing instruction to the streaming media processing module, otherwise, the drawing instruction module sends the drawing instruction after the connection is established. When the device access driving unit is connected with the streaming media processing module, the liquid crystal configuration information is transmitted to the streaming media processing module, the streaming media processing module loads the liquid crystal configuration, when the device access driving unit receives a drawing instruction, whether the connection is established with the streaming media server is checked, if the connection is established, drawing is carried out according to the picture layers, a frame of picture is generated, H264 coding is carried out, finally, a code stream is pushed to the streaming media server, and if the connection is not established, the connection is established firstly, and then subsequent operation is carried out.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A remote control system of a liquid crystal display screen is characterized by comprising a master station cloud platform, a streaming media server in bidirectional communication connection with the master station cloud platform, and a device access driving unit in bidirectional communication connection with the liquid crystal display screen of a target device; the equipment access driving unit comprises a virtual liquid crystal connection management module, a drawing instruction module, a streaming media processing module and a system micro-service interface, wherein the virtual liquid crystal connection management module is in bidirectional communication connection with the master station cloud platform through the system micro-service interface; the drawing instruction module is in bidirectional communication connection with the streaming media server through the streaming media processing module.
2. The remote control system of the liquid crystal display screen according to claim 1, wherein the device access driving unit further comprises a keyboard and mouse issuing module, and the keyboard and mouse issuing module is in bidirectional communication connection with the master station cloud platform through a system micro-service interface.
3. The remote control system of the liquid crystal display screen of claim 1, wherein the device access driving unit further comprises a status light information module, and the status light information module is in bidirectional communication connection with the master station cloud platform through a system micro-service interface.
4. The remote control system for the liquid crystal display screen according to claim 1, wherein the target device comprises any one of a measurement and control device, a protection device, a PMU device, and a clock device.
5. A remote control method for a liquid crystal display, the method comprising the steps of:
receiving a virtual liquid crystal message sent by target equipment, and driving a drawing instruction module to send a drawing instruction to a streaming media processing module when the virtual liquid crystal message contains a drawing message type;
the streaming media processing module performs drawing operation according to the virtual liquid crystal message and pushes a code stream to a streaming media server;
and the cloud platform of the master station accesses the service provided by the streaming media server, pulls the virtual liquid crystal picture video stream, and realizes remote display of the liquid crystal display screen picture of the target equipment.
6. The method of claim 5, wherein before receiving the virtual liquid crystal message sent by the device, the master cloud platform further needs to perform the following operations:
opening a virtual liquid crystal streaming media switch to enable the equipment to be connected with a drawing instruction module of the driving unit and a streaming media processing module;
the trigger device access driving unit addresses the target device through the MAC of the target device and enables the device access driving unit to establish connection with the target device.
7. The method of claim 5, wherein the virtual liquid crystal message is an LL C link layer message.
8. The method of claim 5, further comprising:
the master station cloud platform reads L ED lamp states through the device access driving unit, and checks the running, alarming and communication states of the target device in real time.
9. The method of claim 5, further comprising:
and the master station cloud platform sends the key information to the equipment access driving unit, processes the key information and then sends the key information to the target equipment, so that the control of the liquid crystal menu of the target equipment is realized.
10. The method of claim 5, further comprising:
when the virtual liquid crystal of the target equipment is remotely checked and controlled by the cloud platform of the master station, a heartbeat message needs to be sent to the equipment access driving unit;
and when the main station cloud platform exits from the virtual liquid crystal boundary surface, a heartbeat message is not sent, and the equipment access driving unit does not receive the heartbeat message sent by the main station cloud platform corresponding to the target equipment within a preset time range, the connection with the bottom layer device and the connection with the streaming media module are actively disconnected, and related resources are released.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010160036.1A CN111404268A (en) | 2020-03-10 | 2020-03-10 | Remote control system and method for liquid crystal display screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010160036.1A CN111404268A (en) | 2020-03-10 | 2020-03-10 | Remote control system and method for liquid crystal display screen |
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2020
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Patent Citations (5)
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| CN101958935A (en) * | 2010-10-20 | 2011-01-26 | 广州数控设备有限公司 | MiniGUI-based remote monitoring system and method of embedded controller |
| CN105786434A (en) * | 2016-03-22 | 2016-07-20 | 北京星网锐捷网络技术有限公司 | Remote display control method and device |
| US20180152489A1 (en) * | 2016-11-29 | 2018-05-31 | Roku, Inc. | Skipping content of lesser interest when streaming media |
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Application publication date: 20200710 |
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