CN101958935B - MiniGUI-based remote monitoring system and method of embedded controller - Google Patents
MiniGUI-based remote monitoring system and method of embedded controller Download PDFInfo
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Abstract
The invention provides a MiniGUI-based remote monitoring system of an embedded controller. The invention has the following advantages and beneficial effects: the invention realizes MiniGUI-based remote monitoring of the embedded controller, is lower in transmission data volume, fast in response of remote monitoring, low in software running overhead and low in image transmission distorsion, does not affect development of the user interface software of the embedded system and is suitable for the embedded controller system developed based on the MiniGUI graphic middleware.
Description
Technical field
The present invention relates to the embedded controller remote control technology, be specifically related to embedded controller long distance control system and method for supervising based on MiniGUI.
Background technology
Along with the development of embedded Control technology, the embedded controller tele-control system is popularized day by day in industrial every aspect.But as communicating by letter between the embedded controller of slave computer and the host computer, the indexs such as its time response, image transmitting distortion rate still are key problem in technology, but also do not realize that the scheme of embedded controller remote monitoring is open at present.
Summary of the invention
The objective of the invention is to overcome weak point of the prior art, a kind of embedded controller long distance control system based on MiniGUI is provided, the present invention has realized the remote monitoring based on the embedded controller of MiniGUI, transmitted data amount is less, the response of remote monitoring is fast, and the running software expense is little, and the image transmitting distortion rate is low, do not affect the exploitation of embedded system user interface software, be fit to the embedded controller system based on MiniGUI figure middle unit development.
Another object of the present invention is to provide the above-mentioned method for supervising of realizing based on the embedded controller long distance control system of MiniGUI.
The objective of the invention is to be achieved through the following technical solutions: the embedded controller long distance control system based on MiniGUI comprises:
Embedded controller is used for sending the drawing request msg to the monitor service machine, and receives the line unit dish operation response of going forward side by side of simulating keyboard data that the monitor service machine transmits;
The monitor service machine, be used for online embedded controller in the scanning system, receive the monitored instruction of monitor terminal machine, and the drawing request msg that will transmit as the embedded controller of monitored object according to monitored instruction is forwarded to corresponding monitor terminal machine, and the simulating keyboard data retransmission that the monitor terminal machine is transmitted is to the embedded controller as monitored object;
The monitor terminal machine is used for sending monitored instruction to the monitor service machine, and the drawing request msg that reception monitor service machine transmits is also carried out the mapping operation response, and send the simulating keyboard data to the embedded controller as monitored object.
Described embedded controller is connected with the monitor service machine by local area network (LAN), and the monitor terminal machine is connected with the monitor service machine by local area network (LAN) or wide area network.Communicate by the monitor service machine between embedded controller and the monitor terminal machine.
Described embedded controller is provided with:
GDI (GDI) is used for carrying out mapping operation;
GDI requesting party (GDI Client) is used for converting the mapping operation of GDI (GDI) to the drawing request msg;
Data buffering sequence sending module is used for the drawing request msg that buffering GDI requesting party (GDI Client) produces, and composition data buffering sequence sends to the monitor service machine;
Input engine (IAL) be used for to receive the simulating keyboard data that the monitor service machine transmits, and offers MiniGUI figure middleware and carry out dissection process;
Application layer is used for the simulating keyboard data that MiniGUI figure middleware carries out after the dissection process are carried out the keyboard operation response.
Described monitor terminal machine is provided with:
GDI service side (GDI Server) is used for receiving the drawing request msg of monitor service machine forwarding and carries out the mapping operation response;
Output engine (GAL) is for GDI service side's (GDI Server) mapping operation provides operation and access interface to virtual display;
Virtual display realizes the virtual output of figure with memory bitmap;
The keyboard scan module, the simulating keyboard Data Concurrent that is used for scanning remote monitoring terminal keyboard is delivered to the monitor service machine.
Described monitor service machine is provided with:
The data buffering module is used for the drawing request msg that buffering receives from embedded controller;
Transmit control centre, be used for the drawing request msg of data buffering module buffering is forwarded to corresponding monitor terminal machine, and will be from the extremely corresponding embedded controller of the simulating keyboard data retransmission that the monitor terminal machine receives;
Central controller is used for the online embedded controller of scanning system and forms online tabulation sending to all online monitor terminal machines, processes the connection request that monitor terminal machine and embedded controller send.
Transfer of data within described monitor service machine and the embedded controller and command transfer adopt respectively independently communication link to realize, specifically:
The monitor service machine is provided with:
Order receiving end/sending end mouth for the monitor command response message that the order receiving end/sending end oral instructions that receive embedded controller come, sends monitored instruction and keyboard analogue data to the order receiving end/sending end mouth of embedded controller;
The data receiver port is for the next drawing request msg of the data sending terminal oral instructions that receive embedded controller;
Embedded controller is provided with:
Order receiving end/sending end mouth for monitored instruction and the keyboard analogue data that the order receiving end/sending end oral instructions that receive the monitor service machine come, sends the monitor command response message to the order receiving end/sending end mouth of monitor service machine;
The data sending terminal mouth is used for sending the drawing request msg to the data receiver port of monitor service machine.
The above-mentioned method for supervising of realizing based on the embedded controller long distance control system of MiniGUI, as follows:
Online embedded controller in the monitor service machine timing scan system forms online tabulation and is sent to all online monitor terminal machines;
The monitor terminal machine sends " starting the draw data transmission " instruction to the monitor service machine, after the permission that obtains the monitor service machine, the monitor service machine sends " starting the draw data transmission " instruction to the embedded controller of " starting the draw data transmission " instruction appointment, embedded controller sends the drawing request msg to the monitor service machine, then by the monitor service machine drawing request msg is forwarded to corresponding monitor terminal machine, the monitor terminal machine carries out the mapping operation response to the drawing request msg;
The monitor terminal machine sends " application control embedded controller " instruction to the monitor service machine, after the permission that obtains the monitor service machine, the monitor service machine receives the simulating keyboard data that the monitor terminal machine transmits, and being forwarded to the embedded controller of described " application control embedded controller " instruction appointment, embedded controller carries out the keyboard operation response to the simulating keyboard data.
In the said method, online embedded controller in the described monitor service machine timing scan system forms online tabulation and is sent to all online monitor terminal machines, specifically:
After service starts, the central controller timing of monitor service machine is to the order receiving end/sending end mouth broadcast query instruction of embedded controller, embedded controller is replied the relevant information of embedded controller to the monitor service machine after receiving query statement, the monitor service machine collects after the information of all online embedded controllers within a certain period of time, generate the online tabulation of an embedded controller, and will be somebody's turn to do to tabulate online and be sent to all online monitor terminal machines.
In the said method, embedded controller sends the drawing request msg to the monitor service machine, specifically:
The GDI of embedded controller (GDI) carries out mapping operation, and GDI requesting party (GDI Client) converts the mapping operation of GDI (GDI) to the drawing request msg; The drawing request msg that data buffering sequence sending module buffering GDI requesting party (GDI Client) produces, and composition data buffering sequence regularly sends to the monitor service machine; If when the drawing request msg is deposited into data buffering sequence sending module, its data buffering sequence is full, and then the log-on data buffer sequence drawing request msg that will cushion sends to the monitor service machine immediately.
In the said method, IP-based Transmission Control Protocol is adopted in communicating by letter between monitor terminal machine and the monitor service machine, and IP-based udp protocol is adopted in communicating by letter between monitor service machine and the embedded Control.
In the said method, the Transmission Control Protocol that adopts between monitor terminal machine and the monitor service machine is communicated by letter, and specifically uses protocol hierarchy, is divided into coding transmission layer and Data Analysis layer.The coding transmission layer is responsible for data compression coding and transmission; And the Data Analysis layer only is responsible for data are carried out dissection process, does not need to know the data transfer mode.Use this structure to be encrypted, to compress data at an easy rate, and be convenient to Extended Protocol.
The present invention has the following advantages and beneficial effect compared to existing technology:
The present invention has realized monitoring at the remote monitoring terminal machine display frame of embedded controller screen, and controls the keyboard of embedded controller by the remote monitoring terminal machine.In the realization of long-range demonstration, used the thought of distributed window system, the plurality of advantages such as with respect to the image compression transmission method, it is less that it has transmitted data amount, and the response of remote monitoring is fast, and the running software expense is little, and the image transmitting distortion rate is low.And, do not affect the exploitation of embedded system user interface software, be fit to the embedded controller system based on MiniGUI figure middle unit development, not yet find to have at present the method for similar realization embedded controller remote monitoring both at home and abroad.
Description of drawings
Fig. 1 is the overall network layout structure figure that the present invention is based on the embedded controller long distance control system of MiniGUI;
Fig. 2 is GDI requesting party of the present invention (GDI Client) and GDI service side's (GDI Server) fundamental diagram;
Fig. 3 is the flow chart that the request sequence send-thread sends about the drawing request msg;
Fig. 4 is the flow chart of data buffer storage.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited to this.
Generally speaking, the present invention be directed to the embedded controller based on MiniGUI figure middle unit development, in local area network (LAN), use the current display frame of PC real time monitoring controller screen, and can use PC that the controller picture is carried out keyboard operation.PC to far-end when producing mapping operation during the embedded controller running software sends the mapping operation request, and the service routine that moves on the PC receives request msg and responds, and draws out graph of a correspondence; Simultaneously PC sends to controller with the user to the mode of operation of software simulation keyboard, and controller response keyboard operation reaches PC carries out remote monitoring to the embedded controller of operation field purpose.
This method transmitted data amount is less, the response of remote monitoring is fast, the running software expense is little, do not affect the exploitation of embedded system user interface software, be fit to the embedded controller system based on MiniGUI figure middle unit development, and successful Application on the GSK988T of Guangzhou Numerical Control Equipment Co., Ltd series lathe control system.
The present invention is based on the embedded controller long distance control system of MiniGUI, comprising:
Embedded controller is used for sending the drawing request msg to the monitor service machine, and receives the line unit dish operation response of going forward side by side of simulating keyboard data that the monitor service machine transmits;
The monitor service machine, be used for online embedded controller in the scanning system, receive the monitored instruction of monitor terminal machine, and the drawing request msg that will transmit as the embedded controller of monitored object according to monitored instruction is forwarded to corresponding monitor terminal machine, and the simulating keyboard data retransmission that the monitor terminal machine is transmitted is to the embedded controller as monitored object;
The monitor terminal machine is used for sending monitored instruction to the monitor service machine, and the drawing request msg that reception monitor service machine transmits is also carried out the mapping operation response, and send the simulating keyboard data to the embedded controller as monitored object.
Described embedded controller is connected with the monitor service machine by local area network (LAN), and the monitor terminal machine is connected with the monitor service machine by local area network (LAN) or wide area network.Communicate by the monitor service machine between embedded controller and the monitor terminal machine.
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing.
Embodiment 1
1, principle:
Fig. 1 is the network topology structure of remote monitoring, and the network of remote monitoring uses the Ethernet of IP-based TCP/UDP agreement.Mainly comprise embedded controller, monitor service machine and monitor terminal machine.Many embedded controllers are connected with the monitor service machine by local area network (LAN), and the monitor terminal machine then can be connected with the monitor service machine by local area network (LAN) or wide area network.
Communicate by the monitor service machine between embedded controller and the monitor terminal machine.
The effect of monitor service machine:
⑴ local area network (LAN) built-in type controller scans, and notifies the connection status of each embedded controller to the remote monitoring terminal machine;
⑵ receive interior all embedded controllers of local area network (LAN) and send the drawing request msg, and the controller of the request of sending is carried out respectively corresponding data buffer storage;
⑶ according to the monitored object of each monitor terminal machine appointment, and the drawing request msg that monitored object is sent is forwarded to the monitor terminal machine;
⑷ the control management of remote monitoring terminal machine when specifying the control of embedded controller;
⑸ the simulating keyboard state of receiving remote monitor terminal machine, and be forwarded to controlled embedded controller.
2.1, GDI requesting party (GDI Client) and GDI service side (GDI Server)
The implementation method that remote monitoring shows, the GDI (GDI at MiniGUI, Graphic Device Interface) GDI requesting party (GDI Client) and GDI service side (GDIServer) have been designed on the basis, the GDI requesting party runs on embedded controller, and the GDI service side runs on the remote monitoring terminal machine.
The mapping operation interface mainly is divided into following a few class:
Device context (DC) operation.Comprise establishment, discharge, and setup of attribute etc.
Geometric figure is drawn.Comprise point, straight line, curve, circle, rectangle, arc etc.
Bitmap image is drawn.Use data bitmap to show output through computing.
Text is drawn.
GDI requesting party (GDI Client) is to make these drawing interfaces produce a corresponding drawing request msg according to specific form, sends to operation GDI service side's (GDI Server) monitor terminal machine by network service.
GDI service side (GDI Server), that drawing interface and the graph abstraction layer of former MiniGUI are transplanted to windows platform, corresponding figure output engine is provided, as the part at monitor terminal machine working procedure, carry out the drafting of figure according to the drawing request msg that receives, present at the display of monitor terminal machine.
As shown in Figure 2, GDI requesting party (GDI Client) and GDI service side (GDI Server) combine and finish the function of former GDI.
2.2 drawing request msg
Article one, the data format of drawing request represents with the mode of request code+required argument.
| Request code | Parameter 1 | Parameter 2 | ...... | Parameter n |
Adopt IP-based udp protocol between embedded controller and the remote monitoring server.Embedded controller uses a continuous internal memory (length may be defined as between the 4k-32k byte) to realize a kind of drawing request sequence buffering by GDI requesting party (GDI Client), stores the data of many requests of drawing.Using GDI requesting party (GDI Client) interface to carry out window when the interface of embedded controller software thread (hereinafter to be referred as thread 1) operation draws, the drawing request msg is written in the sequence buffering, and regularly buffered data is sent to the monitor service machine by UDP datagram by special request sequence send-thread (hereinafter to be referred as thread 2); If thread operation in interface uses GDI Client interface to carry out the window drawing in addition, buffering was full when the drawing request msg was written to the sequence buffering, then will trigger in the thread of interface and send buffered data, and general buffering less than the time, the request of then just will drawing of GDI Client interface is put into and cushioned is complete operation.
Two kinds of situations can cause the data in the sequence buffering are sent:
Cycle period through a thread 2 sends data in this thread.
Buffering can not be held any more when preparing in the thread 1 to write the drawing request msg, with slot milling, then continues the write request data after needing in this thread data are sent.
The data of general buffering all are to send when situation A occurs, and just situation B can occur under the very many extreme conditions of mapping operation, at this moment can cause showing the phenomenon of hysteresis, but odds are very little.
Be respectively the flow process that GDI Client drawing interface sends about the drawing request msg in thread 2 and the thread 1 such as Fig. 3 and Fig. 4.
2.3 remote monitoring communication protocol
Remote monitoring communication protocol comprises the communication protocol of monitor service machine and monitor terminal machine, monitor service machine and controller.
2.3.1 monitor service machine and controller
The monitor service machine is communicated by letter with controller, and monitor service owner will send control command to controller; Controller then sends drawing request msg and some relevant information of controller to the monitor service machine.Because the data volume of the request of drawing is larger, thus this item number according to by one independently udp port transmit, other information then communicate with the another one udp port.
The communication process of monitor service machine and controller is as follows:
Start service: the monitor service machine starts service and binds two udp ports: command port and FPDP.Two threads of monitor service machine establishment receive respectively the data from these two ports.
Create tabulation: after service started, regularly to the command port broadcast query instruction of controller, controller was replied the relevant information of controller to the monitor service machine to the monitor service machine after receiving query statement.The monitor service machine collects after the information of all on-line controllers within a certain period of time, generates the information list of a controller.
Draw data transmission: when client sends the request of log-on data transmission and obtains allowing to the monitor service machine after, the monitor service machine just sends " log-on data transmission " instruction to the controller of appointment, controller receives that the FPDP of the backward monitor service machine of instruction sends the data of drawing, and disconnects until the monitor service machine sends the instruction of " stopping transfer of data " or connects to controller.
Keyboard data transmission: when client sends the request of application control controller and obtains allowing to the monitor service machine after, the monitor service machine will be forwarded to from the keyboard data that client sends the command port of controller, until client is initiatively abandoned the control of controller or disconnected.
Drawing refreshes: before the draw data transmission, controller at first can carry out once full frame refreshing automatically.In data transmission procedure, after the monitor service machine examination has measured the partial data LOF, will send to controller the instruction of " drawing refreshes ".
The transmission of keyboard light status data: current controller receives after the keyboard data, replys the keyboard light status data.
2.3.2 monitor service machine and monitor terminal machine
Adopt IP-based Transmission Control Protocol between embedded controller monitor service machine and the monitor terminal machine.Only have directly access controller of monitor service machine, the monitor terminal machine then must could obtain by the monitor service machine data of controller.
Agreement between monitor service machine and monitor terminal machine is used hierarchy, is divided into coding transmission layer and Data Analysis layer.The coding transmission layer mainly is responsible for data compression coding and transmission; And the Data Analysis layer only is responsible for data are carried out dissection process, and does not need to know the data transfer mode.Use this structure to be encrypted, to compress data at an easy rate, and be convenient to Extended Protocol.
The form of individual-layer data frame is as follows:
| Coding transmission layer data (fixed length) | Data Analysis layer data (random length) |
The main communication of monitor terminal machine and monitor service machine is as follows:
Connect: the monitor terminal machine sends a TCP connection request to the monitor service machine, and monitor terminal machine and monitor service machine are in communication state after successfully connecting.
Information updating: the monitor service machine has regularly been set up the lastest imformation of the monitor terminal machine transmit control device tabulation of TCP connection to each.The monitor terminal machine also can obtain by transmission the instruction of controller list, refreshes whole controller list.
Telemonitoring: the instruction that the monitor terminal machine sends " starting the draw data transmission " to the monitor service machine starts the supervision to remote controllers, enter monitored state after, the monitor service machine regularly sends the drawing request msg to monitor terminal journey machine.The monitor terminal machine sends " stopping the draw data transmission " instruction then to be finished to monitor.
Long-distance Control: if the controller of the confidential control appointment of monitor terminal at first sends the instruction of " application control " to the monitor service machine, authorized after, the monitor terminal machine regularly sends keyboard state to the monitor service machine.And the monitor terminal machine will receive the status data that comes from controller keyboard output point.The monitor terminal program sends the control of " finishing control " order fulfillment to service end.
Disconnect: the monitor terminal owner is moving withdraw from or send the instruction that disconnects to the monitor service machine after, communication state finishes.
Above-described embodiment is the better execution mode of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (8)
1. based on the embedded controller long distance control system of MiniGUI, it is characterized in that: comprising:
Embedded controller is used for sending the drawing request msg to the monitor service machine, and receives the line unit dish operation response of going forward side by side of simulating keyboard data that the monitor service machine transmits;
The monitor service machine, be used for online embedded controller in the scanning system, receive the monitored instruction of monitor terminal machine, and the drawing request msg that will transmit as the embedded controller of monitored object according to monitored instruction is forwarded to corresponding monitor terminal machine, and the simulating keyboard data retransmission that the monitor terminal machine is transmitted is to the embedded controller as monitored object;
The monitor terminal machine is used for sending monitored instruction to the monitor service machine, and the drawing request msg that reception monitor service machine transmits is also carried out the mapping operation response, and send the simulating keyboard data to the embedded controller as monitored object;
Described embedded controller is connected with the monitor service machine by local area network (LAN), and the monitor terminal machine is connected with the monitor service machine by local area network (LAN) or wide area network, communicates by the monitor service machine between embedded controller and the monitor terminal machine.
2. the embedded controller long distance control system based on MiniGUI according to claim 1, it is characterized in that: described embedded controller is provided with:
GDI is used for carrying out mapping operation;
The GDI requesting party is used for converting the mapping operation of GDI to the drawing request msg;
Data buffering sequence sending module is used for the drawing request msg that buffering GDI requesting party produces, and composition data buffering sequence sends to the monitor service machine;
Input engine be used for to receive the simulating keyboard data that the monitor service machine transmits, and offers MiniGUI figure middleware and carry out dissection process;
Application layer is used for the simulating keyboard data that MiniGUI figure middleware carries out after the dissection process are carried out the keyboard operation response;
Described monitor terminal machine is provided with:
The GDI service side is used for receiving the drawing request msg of monitor service machine forwarding and carries out the mapping operation response;
Output engine is for GDI service side's mapping operation provides operation and access interface to virtual display;
Virtual display realizes the virtual output of figure with memory bitmap;
The keyboard scan module, the simulating keyboard Data Concurrent that is used for scanning remote monitoring terminal keyboard is delivered to the monitor service machine;
Described monitor service machine is provided with:
The data buffering module is used for the drawing request msg that buffering receives from embedded controller;
Transmit control centre, be used for the drawing request msg of data buffering module buffering is forwarded to corresponding monitor terminal machine, and will be from the extremely corresponding embedded controller of the simulating keyboard data retransmission that the monitor terminal machine receives;
Central controller is used for the online embedded controller of scanning system and forms online tabulation sending to all online monitor terminal machines, processes the connection request that monitor terminal machine and embedded controller send.
3. the embedded controller long distance control system based on MiniGUI according to claim 2, it is characterized in that: the transfer of data between described monitor service machine and the embedded controller and command transfer adopt respectively independently communication link to realize, specifically:
The monitor service machine is provided with:
Order receiving end/sending end mouth for the monitor command response message that the order receiving end/sending end oral instructions that receive embedded controller come, sends monitored instruction and keyboard analogue data to the order receiving end/sending end mouth of embedded controller;
The data receiver port is for the next drawing request msg of the data sending terminal oral instructions that receive embedded controller;
Embedded controller is provided with:
Order receiving end/sending end mouth, for monitored instruction and the keyboard analogue data that the order receiving end/sending end oral instructions that receive the monitor service machine come, transmission monitor command response message to the order of monitor service machine receives send-thread;
The data sending terminal mouth is used for sending the drawing request msg to the data receiver thread of monitor service machine.
4. the method for supervising of realizing based on the embedded controller long distance control system of MiniGUI according to claim 1 is characterized in that, method is as follows:
Online embedded controller in the monitor service machine timing scan system forms online tabulation and is sent to all online monitor terminal machines;
The monitor terminal machine sends " starting the draw data transmission " instruction to the monitor service machine, after the permission that obtains the monitor service machine, the monitor service machine sends " starting the draw data transmission " instruction to the embedded controller of " starting the draw data transmission " instruction appointment, embedded controller sends the drawing request msg to the monitor service machine, then by the monitor service machine drawing request msg is forwarded to corresponding monitor terminal machine, the monitor terminal machine carries out the mapping operation response to the drawing request msg;
The monitor terminal machine sends " application control embedded controller " instruction to the monitor service machine, after the permission that obtains the monitor service machine, the monitor service machine receives the simulating keyboard data that the monitor terminal machine transmits, and being forwarded to the embedded controller of described " application control embedded controller " instruction appointment, embedded controller carries out the keyboard operation response to the simulating keyboard data.
5. the method for supervising of realizing based on the embedded controller long distance control system of MiniGUI according to claim 4, it is characterized in that, in the said method, online embedded controller in the described monitor service machine timing scan system, form online tabulation and be sent to all online monitor terminal machines, specifically:
After service starts, the central controller timing of monitor service machine is to the order receiving end/sending end mouth broadcast query instruction of embedded controller, embedded controller is replied the relevant information of embedded controller to the monitor service machine after receiving query statement, the monitor service machine collects after the information of all online embedded controllers within a certain period of time, generate the online tabulation of an embedded controller, and will be somebody's turn to do to tabulate online and be sent to all online monitor terminal machines.
6. the method for supervising of realizing based on the embedded controller long distance control system of MiniGUI according to claim 4 is characterized in that, in the said method, embedded controller sends the drawing request msg to the monitor service machine, specifically:
GDI in the embedded controller carries out mapping operation, and the GDI requesting party in the embedded controller converts the mapping operation of GDI to the drawing request msg; The drawing request msg that data buffering sequence sending module buffering GDI requesting party in the embedded controller produces, and composition data buffering sequence regularly sends to the monitor service machine; If when the drawing request msg is deposited into data buffering sequence sending module, its data buffering sequence is full, and then the log-on data buffer sequence drawing request msg that will cushion sends to the monitor service machine immediately.
7. the method for supervising of realizing based on the embedded controller long distance control system of MiniGUI according to claim 4, it is characterized in that, in the said method, IP-based Transmission Control Protocol is adopted in communicating by letter between monitor terminal machine and the monitor service machine, and IP-based udp protocol is adopted in communicating by letter between monitor service machine and the embedded controller.
8. the method for supervising of realizing based on the embedded controller long distance control system of MiniGUI according to claim 7, it is characterized in that, in the said method, the Transmission Control Protocol that adopts between monitor terminal machine and the monitor service machine is communicated by letter, the concrete protocol hierarchy that uses is divided into coding transmission layer and Data Analysis layer; The coding transmission layer is responsible for data compression coding and transmission; And the Data Analysis layer only is responsible for data are carried out dissection process, does not need to know the data transfer mode.
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| CN107291019A (en) * | 2017-08-11 | 2017-10-24 | 苏睿 | Long-range control method, device and remote processing devices |
| CN111404268A (en) * | 2020-03-10 | 2020-07-10 | 国电南瑞科技股份有限公司 | Remote control system and method for liquid crystal display screen |
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