CN102571828B - Webpage-based remote multimedia monitoring method and system - Google Patents
Webpage-based remote multimedia monitoring method and system Download PDFInfo
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Abstract
The invention discloses a webpage-based remote multimedia monitoring method and a system. The method comprises the following steps: a task queue is established by a monitoring server side and a monitoring request command is sent to a remote multimedia playing side at regular time, and the multimedia playing side acquires the current monitoring information according to the monitoring request command and passes back the acquired monitoring information to the monitoring server side; then the monitoring server side receives and buffers the monitoring information sent by the remote multimedia playing side; and finally, a monitoring client side utilizes the ajax (Asynchronous JavaScript And XML(Extensive Makeup Language)) technology to acquire and monitor the monitoring information under a monitoring catalogue through locally refreshing at regular time. Due to the method and the system in the invention, the monitoring client side can access an internet directly, a user can utilize the ajax technology to acquire the newest monitoring information automatically at regular time by logging in a monitoring system, so that the monitoring cost is lowered, and the monitoring convenience is improved.
Description
Technical field
Multimedia end monitoring technique of the present invention field, is specifically related to a kind of remote multi-media method for supervising and system based on webpage.
Background technology
Existing long distance control system is utilized public telephone switching network or telephone for special use switching network (PSTN/GSTN) conventionally, solves the transmission of image, sound and the data of remote monitoring website.Application number is Chinese patent application " automatic remote image/language transfer monitoring system " (the publication number CN1269575 of CN00104208.4, October 11 2000 time of disclosure) in disclose and a kind of carried out remote image/language automatic transmission system by switched telephone network, this system is by being contained in a set of (or two cover) control centre's device of Surveillance center and being arranged on respectively multiple distal view pictures/voice processing apparatus formation of different remote monitoring websites, and control centre's device is connected with the telephone wire of switched telephone network respectively with distal view picture/voice processing apparatus.Distal view picture/voice processing apparatus will be delivered to control centre's device of Surveillance center through telephone wire after the image of collection in worksite and Speech Signal Compression coding, compression coded image and speech data are carried out decompression by control centre, and reproduce distal view picture and sound equipment, but the speed of these telephone network transmitting multimedia datas is limited, stability is difficult to satisfactory.
Application number is Chinese patent application " long distance multimedia automatic monitering system and method for supervising " (the publication number CN1507183A of CN02153946.4, June 23 2004 time of disclosure) in a kind of long distance multimedia automatic monitering system is disclosed, this system comprises that one receives module, an administrative center and a monitoring management terminal module; Receive module be one or more digital cameras with wireless communication function, for need alarm condition occur time obtain image or acoustic information and transmit signal or multiple multi-medium data to administrative center; Monitoring management terminal module is for receiving management center or receive the relevant information that module sends, and initiatively from administrative center or receive module and control and check that operation obtains related data, the present invention to a great extent and digital camera realize.Although this invention has realized the effective monitoring to control point, heighten personnel's utilization ratio still because the data volume of needs transmission is larger, need the extra watch-dogs such as front end watch-dog, also often higher to the network bandwidth and the requirement of server hardware configuration, cause numerous inconvenience.In addition, in existing remote multi-media supervisory control system, often need to binary executable file be installed in client, in the time that user need to monitor each broadcasting end, often need first download client installation procedure, sometimes also need parameter to be configured.
Summary of the invention
For the defect existing in prior art, the object of the present invention is to provide a kind of remote multi-media method for supervising and system based on webpage, the monitoring to remote playing client information at monitor client for ease of user, provides one real-time video monitoring method and system more effectively more easily.
For reaching above object, the technical solution used in the present invention is: a kind of remote multi-media method for supervising based on webpage, comprises the following steps:
(1) remote multi-media is play the communication connection of end foundation and monitoring server end;
(2) monitoring server end is set up task queue and is regularly play end to remote multi-media and sends monitoring request command;
(3) remote multi-media is play to hold and according to described monitoring request command, current monitor message is gathered and the monitor message of collection is returned to monitoring server end;
(4) monitor message that monitoring server termination is received and the transmission of buffer memory remote multi-media broadcasting end is returned;
(5) monitor client utilizes ajax technology from portion of monitoring server end office (EO) timing acquisition monitor message, and refreshes interface display latest state information.
A remote multi-media supervisory control system based on webpage, comprising:
Monitor client, for utilizing the up-to-date monitor message of ajax technology timing acquisition;
Monitoring server end, plays for generating monitor task reception and buffer memory remote multi-media the monitor message that end sends;
Remote multi-media is play end, for obtaining monitor message order from monitoring server end, and carries out collection and the passback of monitor message.
Effect of the present invention is: by method and system of the present invention, monitor client is accessing Internet directly, and user can log in supervisory control system by machine, utilizes ajax technology self-timing to obtain up-to-date monitor message.Use method and system of the present invention, just can obtain even if monitor client can avoid installing binary application program the information that remote multi-media broadcasting is held, reduce monitoring cost, improved the convenience of monitoring.
Brief description of the drawings
Fig. 1 is the structured flowchart of the remote multi-media supervisory control system based on webpage in the specific embodiment of the invention;
Fig. 2 is the flow chart of the remote multi-media method for supervising based on webpage in the specific embodiment of the invention;
Fig. 3 is the workflow diagram of monitoring server end in the specific embodiment of the invention;
Fig. 4 is the workflow diagram of monitor client in the specific embodiment of the invention.
Embodiment
Core concept of the present invention is: first, monitoring server end is set up initial task queue by reading database medium-long range multimedia end deployed with devices information, and timing is play end transmission monitoring request command to remote multi-media; Then, remote multi-media is play to hold according to monitoring request command current monitor message is gathered and returned; Monitoring server termination is received and buffer memory remote multi-media is play the monitor message that end transmission is returned; Finally, monitor client utilizes the local monitor message of obtaining monitoring server end that refreshes of ajax technology timing.Utilize method of the present invention to reduce in the situation of bandwidth occupancy as far as possible, realize one real-time video monitoring more effectively more easily.
Below in conjunction with Figure of description and embodiment, the present invention is described in further detail.
Fig. 1 shows the structured flowchart of the remote multi-media supervisory control system based on webpage in the specific embodiment of the invention, and as shown in the figure, this system comprises:
Monitor client 11, for utilizing the up-to-date monitor message of ajax technology timing acquisition;
Ajax i.e. " Asynchronous JavaScript and XML " (asynchronous JavaScript and XML), refer to a kind of webpage development technology that creates interaction network page application, ajax application can only send and fetch essential data to server, therefore be that the data that exchange between client reduce in a large number at server and browser, just can see that response applies faster.A lot of work for the treatment of simultaneously can complete on the client machine of the request of sending, so the processing time of Web server has also reduced.Wherein, ajax the most strikingly one is called the technology of " yellow hidden go out ", it becomes yellow by user interface before Data Update time, recovers at once original color after having upgraded. use the great advantage of ajax, exactly can be under the prerequisite of not upgrading full page service data.This makes web application respond user action more fastly, and has avoided sending on network the information that those did not change.
Monitor client 11 comprise for check user monitoring authority log in administration module 111, for obtaining the state acquisition module of latest equipment state information and for refreshing the state refresh module 112 of interface display state information.
Monitoring server end 12, plays for generating monitor task reception and buffer memory remote multi-media the monitor message that end sends;
Monitoring server end 12 comprises for controlling monitor task module 122 that the remote multi-media that user's logon rights and user can monitor plays the authority management module 121 of end equipment, generates and send for monitor task, for receiving and buffer memory remote multi-media is play the web service module 124 that end sends the monitor message processing module 123 of the monitor message of returning and obtains monitor message request and monitor message is sent to monitor client for receiving monitor client.
The present invention has realized monitor client by monitoring server end to play communicating by letter of end with remote multi-media, Fig. 3 shows the workflow diagram of monitoring server end in the specific embodiment of the invention, as shown in the figure, monitoring server end is on the one hand by the monitor message of receiving remote multimedia end passback, wherein, screenshotss picture information cache in monitored directory, status information of equipment is cached in internal memory, and by checking the monitored directory of screenshotss picture, the screenshotss picture of former state is removed, the screenshotss picture of the mac address of same node only retains up-to-date, on the other hand, monitoring server end is by setting up task queue and playing end transmission monitor command to remote multi-media and finally realize obtaining of monitor message.
Wherein, mac (Medium/Media Access Control) address, or be called mac address, hardware address, is used for the position of define grid equipment.Each network site has a mac address that is specific to it.Mac address is that burning is at NetworkInterfaceCard (network interface card, NIC) inner, by 48 bit long (6 byte), the numeral composition of 16 systems, 0-23 position is called organizes unique identifier (organizationally unique is the mark of identification LAN (local area network (LAN)) node.Mac address information by device node can find corresponding watch-dog.
Remote multi-media is play end 13, for obtaining monitor message order from monitoring server end, and carries out collection and the passback of monitor message.
Remote multi-media broadcasting end 13 comprises for remote multi-media to be play and holds the communication module 131 of the communication connection between monitoring server and the monitor message order for response monitoring server end, the monitoring information acquisition module 132 of carrying out collection and the passback of monitor message.
Fig. 2 shows the flow chart of the remote multi-media method for supervising based on webpage based on supervisory control system in Fig. 1,, as shown in the figure, the method comprises the following steps:
Step S21: remote multi-media is play the foundation that end is communicated by letter with monitoring server end;
Remote multi-media is play end foundation: first, remote multi-media is play end and sent linking request to monitoring server end; Then, monitoring server end checks remote multi-media broadcasting client information, establishes a communications link with it, and remote multi-media is play and held deployed with devices information to deposit database in to send monitoring request command to this broadcasting end.Wherein, remote multi-media is play to hold and is adopted the mac address information of device node to carry out device identification to playing end points.
Step S22: set up task queue and play end transmission monitoring request command to remote multi-media;
Monitoring server end sets up task queue and timing is play end transmission monitoring request command to remote multi-media, and concrete steps are:
Monitoring server end reading database medium-long range multimedia end deployed with devices information, and set up initial task queue according to certain strategy;
Check task queue, the task that background service is executed the task in queue according to the time of implementation timing of order, plays end to remote multi-media and sends monitor command, and according to the strategy setting time of implementation next time, generate new order and be put in task queue.
Wherein, described strategy is to send the frequency that obtains monitor command, monitoring server end arranges user according to user's supervision authority and sends the frequency that obtains monitoring request command, and set up initial task queue according to this frequency, user's supervision authority is higher, and it is faster that the frequency of monitoring request command is obtained in transmission; In described task queue, deposit initiating task, every task data comprises that monitor message obtains the time of implementation of order and order.Described monitor message is obtained order and is comprised that the screenshotss order of each node and the state of node obtain order; Dissimilar order arranges different time of implementation intervals according to network state.
Step S23: remote multi-media is play collection and the passback of end monitor message;
Remote multi-media is play end and current monitor message is gathered and the monitor message of collection is returned to monitoring server end according to the monitoring request command of monitoring server end transmission, wherein, monitor message is that remote multi-media is play end status information data, comprises screenshotss picture and status information of equipment; Remote multi-media is play end and is adopted the mac address of device node to carry out device identification to playing end points.
Remote multi-media is play the end collection of monitor message and the concrete steps of passback are:
Remote multi-media is play end designated port is monitored, and the monitor message obtaining is resolved;
Receive monitoring request command, carry out this order and current monitor message is gathered and pass back to monitoring server end.
If what remote multi-media monitoring client received is to obtain screenshotss order, current whole screen is carried out to screenshotss, generate screenshotss picture, and the size of screenshotss picture is dwindled, reduce in scale is adjusted according to network condition; Screenshotss picture adopts the mode of passback file.The name of screenshotss picture comprises mac address information and the screenshotss temporal information of current device.
If communication module listens to other watch-dog state information acquisition orders, notify monitoring information acquisition module, it is rear corresponding that information acquisition module obtains order, returns back node state by communication module.This passback is different from the passback of screenshotss picture, only returns data.
Step S24: reception and the buffer memory of monitoring server end to monitor message;
Monitoring server termination is received and the concrete steps of the monitor message that the transmission of buffer memory remote multi-media broadcasting end is returned are:
Monitoring reception remote multi-media is play the monitor message data of end passback, and monitor message data comprise node mac address information labelling;
Use Hash table to check in monitor message buffer memory whether have this node status information, if node status information is upgraded; Need if not this Hash table to lock, to the monitor message that adds this node in Hash table.
Wherein, also comprise and check screenshotss picture under monitored directory in concrete steps, the screenshotss picture of same mac address only retains up-to-date.
Step S25: monitor client obtains refreshing of monitor message.
Fig. 4 shows the workflow diagram of monitor client in the specific embodiment of the invention, and as shown in the figure, monitor client ajax technology refreshes the concrete steps of obtaining monitor message and is:
Logging in system by user, monitoring server checks user's authority, and obtains from database the device node mac code list that user can monitor;
Monitor client utilizes ajax technology to obtain the screenshotss picture url under monitoring server end monitored directory, obtains the up-to-date screenshotss pictorial information under monitored directory according to this screenshotss picture url;
Directly from monitoring server end memory, obtain latest equipment state information according to the list of described mac address information;
According to obtained monitoring pictorial information and up-to-date status information of equipment, refresh monitor client interface display latest state information.
Wherein, monitor client utilizes ajax technology, obtain the screenshotss picture url under monitoring server end monitored directory, and according to the concrete mode that described screenshotss picture url obtains up-to-date screenshotss pictorial information under monitored directory be: monitor client is set a timer, at set intervals, timer wakes a thread for upgrading up.This thread uses ajax technology, in the situation that not affecting user and browsing, is connected with monitor service end by monitor client backstage, obtains up-to-date interdependent node monitor data.The url that comprises which monitoring picture in the data of obtaining upgrades.Then, this thread pass through JavaScript script, from the url upgrading, obtain image content, and be presented at corresponding position in browser.In this way, realized and do not refreshed renewal of the page monitor message.
Wherein, the acquisition methods of up-to-date screenshotss picture: the mode quick obtaining by filename comparison arrives, first the prefix matching of the mac address information by specified node finds the screenshotss picture of specified node, then according to character string comparison, the character string maximum of the up-to-date inevitable file of screenshotss picture of screenshotss time.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technology thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (14)
1. the remote multi-media method for supervising based on webpage, comprises the following steps:
(1) remote multi-media is play the communication connection of end foundation and monitoring server end;
(2) monitoring server end is set up task queue and is regularly play end to remote multi-media and sends monitoring request command;
(3) remote multi-media is play to hold and according to described monitoring request command, current monitor message is gathered and the monitor message of collection is returned to monitoring server end; Described monitor message is that remote multi-media is play end state information, comprises screenshotss pictorial information and status information of equipment; Remote multi-media is play end and is adopted the mac address information of device node to carry out device identification; The name of described screenshotss pictorial information comprises mac address information and the screenshotss temporal information of device node;
(4) monitor message that monitoring server termination is received and the transmission of buffer memory remote multi-media broadcasting end is returned; Described screenshotss picture information cache is in the monitored directory of monitoring server end, and described status information of equipment is cached in the internal memory of monitoring server end;
(5) monitor client utilizes ajax technology from portion of monitoring server end office (EO) timing acquisition monitor message, and refreshes interface display latest state information; Monitor client utilizes ajax technology from portion of monitoring server end office (EO) timing acquisition monitor message, and the concrete steps that refresh interface display latest state information are:
Logging in system by user, monitoring server checks user's authority, and obtains the mac address information list of the device node that user can monitor from database;
Monitor client utilizes ajax technology, obtains the screenshotss picture url under monitoring server end monitored directory, and obtains the up-to-date screenshotss pictorial information under monitored directory according to described screenshotss picture url;
Directly from monitoring server end memory, obtain latest equipment state information according to the list of described mac address information;
According to obtained screenshotss pictorial information and up-to-date status information of equipment, refresh monitor client interface display latest state information.
2. remote multi-media method for supervising as claimed in claim 1, it is characterized in that: described monitor client utilizes ajax technology, obtain the screenshotss picture url under monitoring server end monitored directory, and the concrete mode that obtains the up-to-date screenshotss pictorial information under monitored directory according to described screenshotss picture url is:
Client is set timer, wakes one up use the thread of ajax technology for upgrading according to the time interval of setting;
Be connected with monitoring server end by monitor client backstage, obtain the monitor data of up-to-date interdependent node, data comprise has carried out the picture url upgrading;
Described thread obtains pictorial information and shows from the picture url upgrading.
3. remote multi-media method for supervising as claimed in claim 2, it is characterized in that: the acquisition methods of described up-to-date screenshotss picture: the mode by filename comparison is obtained, first the prefix matching of the mac address information by specified node finds the screenshotss picture of specified node, then according to character string comparison, the character string maximum of the up-to-date inevitable file of screenshotss picture of screenshotss time.
4. remote multi-media method for supervising as claimed in claim 1, is characterized in that: in step (1), remote multi-media is play end and with the step that monitoring server end establishes a communications link is:
1) remote multi-media is play end and is sent linking request to monitoring server end;
2) monitoring server end checks remote multi-media broadcasting client information, establishes a communications link with it, and remote multi-media is play and held deployed with devices information to deposit database in to send monitoring request command to this broadcasting end.
5. remote multi-media method for supervising as claimed in claim 1, is characterized in that: in step (2), described monitoring server end sets up task queue and timing is play and held the concrete steps that send monitoring request command to be to remote multi-media:
Monitoring server end reading database medium-long range multimedia end deployed with devices information, sets up initial task queue according to certain strategy;
Check task queue, the task that background service is executed the task in queue according to the time of implementation timing of order, and according to described strategy, be set the time of implementation next time, generate new order and be put in task queue.
6. remote multi-media method for supervising as claimed in claim 5, it is characterized in that: described strategy is to send the frequency that obtains monitoring request command, monitoring server end arranges user according to user's supervision authority and sends the frequency that obtains monitoring request command, and set up initial task queue according to this frequency, user's supervision authority is higher, and it is faster that the frequency of monitoring request command is obtained in transmission; In described task queue, deposit initiating task, every task data comprises that monitor message obtains the time of implementation of order and order, and dissimilar order arranges different time of implementation intervals according to network state.
7. remote multi-media method for supervising as claimed in claim 1, is characterized in that: in step (3), remote multi-media is play the end collection of monitor message and the step of passback is:
Remote multi-media is play end designated port is monitored, and the monitor message obtaining is resolved;
Receive monitoring request command, carry out this order and current monitor message is gathered and pass back to monitoring server end.
8. remote multi-media method for supervising as claimed in claim 7, it is characterized in that: be to obtain screenshotss order if remote multi-media plays that termination receives, current whole screen is carried out to screenshotss, generate screenshotss picture, and the size of screenshotss picture is dwindled, reduce in scale is adjusted according to network condition; Screenshotss picture adopts the mode of passback file.
9. remote multi-media method for supervising as claimed in claim 1, is characterized in that: in step (4), monitoring server termination is received and the concrete mode of the monitor message that the transmission of buffer memory remote multi-media broadcasting end is returned is:
Monitoring reception remote multi-media is play the monitor message data of end passback, and monitor message data comprise node mac address information labelling;
Use Hash table to check in monitor message buffer memory whether have this node status information, if node status information is upgraded; Need if not this Hash table to lock, to the state information that adds this node in Hash table;
Check the screenshotss picture under monitored directory, the screenshotss picture of same mac address only retains up-to-date.
10. the remote multi-media supervisory control system based on webpage, comprising:
Monitor client, for utilizing the up-to-date monitor message of ajax technology timing acquisition; Described monitor message is that remote multi-media is play end state information, comprises screenshotss pictorial information and status information of equipment; Remote multi-media is play end and is adopted the mac address information of device node to carry out device identification; The name of described screenshotss pictorial information comprises mac address information and the screenshotss temporal information of device node;
Monitoring server end, plays for generating monitor task reception and buffer memory remote multi-media the monitor message that end sends; Described screenshotss picture information cache is in the monitored directory of monitoring server end, and described status information of equipment is cached in the internal memory of monitoring server end;
Remote multi-media is play end, for obtaining monitor message order from monitoring server end, and carries out collection and the passback of monitor message;
Wherein, monitor client utilizes ajax technology from portion of monitoring server end office (EO) timing acquisition monitor message, and the concrete steps that refresh interface display latest state information are:
Logging in system by user, monitoring server checks user's authority, and obtains the mac address information list of the device node that user can monitor from database;
Monitor client utilizes ajax technology, obtains the screenshotss picture url under monitoring server end monitored directory, and obtains the up-to-date screenshotss pictorial information under monitored directory according to described screenshotss picture url;
Directly from monitoring server end memory, obtain latest equipment state information according to the list of described mac address information;
According to obtained screenshotss pictorial information and up-to-date status information of equipment, refresh monitor client interface display latest state information.
11. remote multi-media supervisory control systems as claimed in claim 10, is characterized in that: described monitor message is that remote multi-media is play end status information data, comprises screenshotss pictorial information and status information of equipment; The name of described screenshotss picture comprises mac address information and the screenshotss temporal information of current device node.
12. remote multi-media supervisory control systems as described in claim 10 or 11, is characterized in that: described monitor client comprise for check user login supervisory control system authority log in administration module, for obtaining the state acquisition module of latest equipment state information and for refreshing the state refresh module of interface display state information.
13. remote multi-media supervisory control systems as described in claim 10 or 11, is characterized in that: described monitoring server end comprises for checking monitor task module that the remote multi-media that user can monitor plays the authority management module of end equipment, generates and send for monitor task, for receiving and buffer memory remote multi-media is play the web service module that end sends the monitor message processing module of the monitor message of returning and obtains monitor message request and monitor message is sent to monitor client for receiving monitor client.
14. remote multi-media supervisory control systems as described in claim 10 or 11, it is characterized in that: described remote multi-media broadcasting end comprises for remote multi-media to be play and hold the communication module of the communication connection between monitoring server and the monitor message order for response monitoring server end, the monitoring information acquisition module of carrying out collection and the passback of monitor message.
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