CN115766329A - System for realizing cross-device state synchronous control based on network message bus - Google Patents
System for realizing cross-device state synchronous control based on network message bus Download PDFInfo
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- CN115766329A CN115766329A CN202211423295.4A CN202211423295A CN115766329A CN 115766329 A CN115766329 A CN 115766329A CN 202211423295 A CN202211423295 A CN 202211423295A CN 115766329 A CN115766329 A CN 115766329A
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 40
- 238000004886 process control Methods 0.000 claims abstract description 22
- 238000009877 rendering Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 description 1
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention relates to a system for realizing cross-device state synchronous control based on a network message bus, which relates to the technical field of synchronous control.A control terminal is used for sending a control instruction, a network message bus broadcasting subsystem is used for analyzing the control instruction and forwarding the control instruction to a process control subsystem or a rendering subsystem of a synchronous display terminal according to the content of the control instruction, the process control subsystem monitors the control instruction through a WebSocket message bus and calls a windows API to correspondingly control and display an application program by utilizing C + +, and the rendering subsystem calls an internal API of the application program to correspondingly control and display the application program according to the control instruction.
Description
Technical Field
The invention relates to the technical field of synchronous control, in particular to a system for realizing cross-device state synchronous control based on a network message bus.
Background
In the process of digital exhibition hall construction, digital twin huge screen application and multi-screen collaborative rendering and control, man-machine control and action state management between a control end and large-screen equipment do not have a perfect solution under the current environment, and the problems of synchronism, instantaneity, different schemes which may need to be erected for different equipment respectively and the like,
the method for realizing cross-device synchronous control in the prior art is as follows: the control end is controlled by a remote control tool, but the existing remote control tools are controlled by external control, so that synchronous control is realized, and the response of network speed and external control requires time, so that the synchronous control is not timely.
Disclosure of Invention
The technical problems solved by the invention are as follows: the system for realizing cross-equipment state synchronous control based on the network message bus solves the problem that cross-equipment synchronous control in the prior art causes untimely synchronous control through external control.
The invention adopts the technical scheme for solving the technical problems that: the system for realizing cross-device state synchronous control based on the network message bus comprises a control terminal, a network message bus broadcasting subsystem and a synchronous display terminal, wherein the synchronous display terminal is a Windows system; the synchronous display terminal comprises a process control subsystem and a rendering subsystem; the control terminal is used for sending a control instruction to the network message bus broadcasting subsystem; the network message bus broadcasting subsystem is used for analyzing a control instruction and forwarding the control instruction to the process control subsystem or the rendering subsystem according to the content of the control instruction, the process control subsystem monitors the control instruction through the WebSocket message bus and calls the Windows sAPI by using C + + to perform corresponding control and display on the application program, and the rendering subsystem calls the internal API of the application program to perform corresponding control and display on the application program according to the control instruction.
Further, if the content of the control instruction is system control, the network message bus broadcasting subsystem forwards the control instruction to the process control subsystem, and the system control comprises opening, closing, minimizing and maximizing of an application program and window switching of a display interface; if the control instruction content is an application level instruction, the network message bus broadcasting subsystem forwards the control instruction to the rendering subsystem, and the application level instruction comprises file opening through an application program, PTT page turning, fast forward and fast backward of a video and control of a three-dimensional model.
Further, the process control subsystem further comprises a TaskManger module, and the TaskManger module is configured to detect a process activity state of the process control subsystem.
Furthermore, the synchronous display terminal is also used for transmitting the display content to the control terminal through the network message bus broadcasting subsystem.
Further, the control terminal comprises a mobile phone, a tablet or a notebook.
The invention has the beneficial effects that: the invention discloses a system for realizing cross-device state synchronous control based on a network message bus, which utilizes a control terminal to send a control instruction, utilizes the network message bus to broadcast the subsystem to analyze the control instruction and forwards the control instruction to a process control subsystem or a rendering subsystem of a synchronous display terminal according to the content of the control instruction, the process control subsystem monitors the control instruction through a WebSocket message bus and utilizes C + + to call a windows API to correspondingly control and display an application program, and the rendering subsystem calls an internal API of the application program according to the control instruction to correspondingly control and display the application program.
Drawings
FIG. 1 is a block diagram of a system for implementing cross-device state synchronization control based on a network message bus according to the present invention.
Detailed Description
The invention relates to a system for realizing cross-device state synchronous control based on a network message bus, which comprises a control terminal, a network message bus broadcasting subsystem and a synchronous display terminal as shown in figure 1, wherein the synchronous display terminal is a Windows system; the synchronous display terminal comprises a process control subsystem and a rendering subsystem; the control terminal is used for sending a control instruction to the network message bus broadcasting subsystem; the network message bus broadcasting subsystem is used for analyzing a control instruction and forwarding the control instruction to the process control subsystem or the rendering subsystem according to the content of the control instruction, the process control subsystem monitors the control instruction through the WebSocket message bus and calls the Windows sAPI by using C + + to perform corresponding control and display on the application program, and the rendering subsystem calls the internal API of the application program to perform corresponding control and display on the application program according to the control instruction.
Specifically, the control terminal comprises intelligent equipment such as a mobile phone, a tablet or a notebook, and control signals sent by the control terminal are divided into two types, one type is system control, and the other type is application level instructions, wherein the system control belongs to synchronous control which can only be completed by system operation, such as opening, closing, minimizing and maximizing of an application program, window switching of a display interface and the like; the applied layer command belongs to the synchronous control which can be completed by the application program, such as file opening, PTT page turning, fast forward and fast backward of video, control of a three-dimensional model and the like, therefore, if the content of the control command is system control, the network message bus broadcasting subsystem forwards the control command to the process control subsystem, and if the content of the control command is an application layer command, the network message bus broadcasting subsystem forwards the control command to the rendering subsystem.
In order to improve the stability, the process control subsystem further comprises a TaskManger module, wherein the TaskManger module is used for detecting the process activity state of the process control subsystem, and automatically restarting the process when the process activity is detected to be abnormal.
In order to improve the user experience, the synchronous display terminal is also used for transmitting the display content to the control terminal through the network message bus broadcasting subsystem, so that the user can conveniently watch the synchronous control effect on the control terminal.
In addition, the system for realizing cross-device state synchronous control based on the network message bus can also comprise a plurality of synchronous display terminals, and if the synchronous display terminals are in the same local area network, the display content of one synchronous display terminal can be transmitted to other display terminals in the same local area network in a pixel stream mode for display.
Claims (5)
1. The system for realizing cross-device state synchronous control based on the network message bus is characterized by comprising a control terminal, a network message bus broadcasting subsystem and a synchronous display terminal, wherein the synchronous display terminal is a Windows system; the synchronous display terminal comprises a process control subsystem and a rendering subsystem; the control terminal is used for sending a control instruction to the network message bus broadcasting subsystem; the network message bus broadcasting subsystem is used for analyzing a control instruction and forwarding the control instruction to the process control subsystem or the rendering subsystem according to the content of the control instruction, the process control subsystem monitors the control instruction through the WebSocket message bus and calls the Windows sAPI by using C + + to perform corresponding control and display on the application program, and the rendering subsystem calls the internal API of the application program to perform corresponding control and display on the application program according to the control instruction.
2. The system for realizing cross-device state synchronous control based on the network message bus as claimed in claim 1, wherein if the control instruction content is system control, the network message bus broadcasting subsystem forwards the control instruction to the process control subsystem, and the system control comprises opening, closing, minimizing and maximizing of an application program and window switching of a display interface; if the control instruction content is an application level instruction, the network message bus broadcasting subsystem forwards the control instruction to the rendering subsystem, and the application level instruction comprises file opening through an application program, PTT page turning, fast forward and fast backward of a video and control of a three-dimensional model.
3. The system for achieving cross-device state synchronization control based on the network message bus of claim 1 or 2, wherein the process control subsystem further comprises a TaskManger module, and the TaskManger module is configured to detect a process activity state of the process control subsystem.
4. The system for realizing cross-device state synchronous control based on the network message bus as claimed in claim 1 or 2, characterized in that the synchronous display terminal is further used for transmitting the display content to the control terminal through the network message bus broadcast subsystem.
5. The system for realizing cross-device state synchronous control based on the network message bus according to claim 1 or 2, characterized in that the control terminal comprises a mobile phone, a tablet or a notebook.
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| CN115766329B CN115766329B (en) | 2024-04-02 |
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