CN102375725B - Interface module of mobile video monitoring system - Google Patents

Abstract

The invention relates to an interface module of a mobile video monitoring system, which comprises a video playing interface module and a control interface module, wherein the video playing interface module is used for displaying a video on a client in multiple interface modes; the control interface module is responsible for enabling a user to control equipment and control the display of information on client software; and the control interface module comprises a basic information control interface unit, a media information control interface unit, a network information control interface unit and a local recorded video information control interface unit. The invention provides the interface module of the mobile video monitoring system, which is more abundant in functions, convenient to operate and good in interaction.

Description

Interface Module of Mobile Video Surveillance System

technical field

The invention belongs to the monitoring software field of a monitoring system, in particular to an interface module of a mobile video monitoring system.

Background technique

A good interface software development tool is half of the success of the software, so the choice of development tools is very important for developers. Visual C++ is a visual integrated development environment based on the Windows operating system, released by Microsoft Corporation, providing editors, debuggers, program wizards, class wizards and other development tools. As a mainstream development tool of Microsoft, it has unparalleled access to the Windows operating system. At the same time, it has considerable advantages in the development of multimedia software under the framework of DirectShow using Visual C++. As an excellent interface software development tool, Visual C++ Provides rich components, making interface development quite easy

Contents of the invention

In order to overcome the disadvantages of single function, complicated operation and poor interactivity of the interface module of the existing mobile video surveillance system, the present invention provides an interface module of the mobile video surveillance system with richer functions, convenient operation and good interactivity.

The technical solution adopted by the present invention to solve its technical problems is:

An interface module of a mobile video surveillance system, the interface module comprising: a video playback interface module, used to display videos on a client in multiple interface modes; a control interface module, used to be responsible for user control and control of equipment The display of information on the customer service software;

The control interface module includes a basic information control interface unit, a media information control interface unit, a network information control interface unit, and a local recording information control interface unit;

The media information control interface unit includes a video resolution port, a code rate port, a frame rate port, a motion detection switch port, a motion detection sensitive port, and a motion detection area port;

The network information control interface unit includes a media service port, a remote control port, a network mode selection port and an IP address port;

The local recording information control interface unit includes a recording switch, a recording mode selection port, a recording storage path selection port and a recording time setting port.

As a preferred scheme: the remote control port adopts TCP protocol as the transport layer protocol of the control layer communication module, and adopts CRC (Cyclic Redundancy Check cyclic redundancy code) check at the application layer.

The technical idea of the present invention is: the interface is used as the software for the mobile video monitoring system to interact with the user. The user requires to be able to view the video monitoring information of the device in real time to achieve the purpose of monitoring. At the same time, it is required to be able to remotely control the device so that its various parameters meet user needs. And as a client processing software, it needs to have a better interactive interface, which is convenient for users to use.

The detailed process is as follows:

(1) The user first needs to enter the user name and password to log in to the software. The client processing software sends the user information to the server for verification, and the server returns the confirmation information to the client processing software. If the user password verification is correct, the software will be opened, and if it is wrong, it will exit software.

(2) Query the device information of the network camera in the server, and the server returns the device information of the network camera according to the user's request.

(3) The user selects the network camera to be monitored, then creates a video playback module, then sends a video sending request to the server, and starts a video playback thread at the same time.

(4) After receiving the request, the server sends the video data to the client processing software.

(5) The user can control the media information and network information of the network camera according to the requirements, and then the server returns a confirmation message to the client, indicating that the setting is successful.

(6) When the user needs to close the client processing software, first request to the server to close the video transmission, then close the client processing software video playback thread, and finally exit the program.

The beneficial effects of the present invention are mainly manifested in: good aesthetics, interactivity and ease of use, concise and clear, easy to operate, and high stability.

Description of drawings

FIG. 1 is a schematic diagram of a control layer protocol stack model of the present invention.

FIG. 2 is a schematic diagram of the format of the control information data packet in the present invention.

Fig. 3 is a schematic diagram of the framework of the control layer communication module of the present invention.

Figure 4 is a program flow chart of the control layer communication module.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

Referring to Figures 1 to 4, an interface module of a mobile video surveillance system, the interface module mainly includes:

The video playback interface module is used to display the video on the client terminal in various interface modes; the control interface module is used to be responsible for the user's control of the device and the display of control information on the customer service software;

The control interface module includes a basic information control interface unit, a media information control interface unit, a network information control interface unit, and a local recording information control interface unit;

The media information control interface unit includes a video resolution port, a code rate port, a frame rate port, a motion detection switch port, a motion detection sensitive port, and a motion detection area port;

The network information control interface unit includes a media service port, a remote control port, a network mode selection port and an IP address port;

The local recording information control interface unit includes a recording switch, a recording mode selection port, a recording storage path selection port and a recording time setting port.

The remote control port adopts TCP protocol as the transport layer protocol of the control layer communication module, and adopts CRC check at the application layer.

The interface module of the mobile video surveillance system in this embodiment mainly includes a video playback interface module and a control interface module.

(1) Video playback module interface module

Referring to the rendering of the video playback interface, video playback is divided into multiple interface modes, including 1-channel playback, 2-channel playback, 4-channel playback, and 9-channel playback.

(2) Control interface module

The control interface module includes basic information control interface, media information control interface, network information control interface, video information control interface, etc.

Its parameter configuration table is shown in Table 1, Table 2, and Table 3:

Table 1 is the media information parameters:

Table 1

Table 2 is the control information configuration parameters:

Table 2

Table 3 is the local recording configuration parameters:

table 3

The control network information control module is mainly responsible for the user's control of remote devices. Due to the small amount of control information data, the importance is high, and the requirements for data security and accuracy are high, so a data protection mechanism is required to ensure data integrity. and correctness. Therefore, the present invention adopts the TCP protocol as the transport layer protocol of the control layer communication module.

The TCP protocol is a connection-oriented, reliable, byte stream-based transport layer protocol. Connection-oriented means that two applications using TCP must establish a TCP connection through the three-way handshake protocol before exchanging data with each other; reliability means that when TCP sends a data packet, it starts a timer and waits for the destination to confirm receipt of the data If the confirmation cannot be received, the message segment will be resent. This confirmation and timeout retransmission mechanism ensures the reliability of TCP transmission. The TCP protocol also provides data verification to ensure the accuracy of data transmission. At the same time, the sliding window mechanism makes the network transmission flow well controlled.

According to the current TCP standard, TCP uses a 16-bit checksum to calculate and check, that is, the sender calculates the sum of the header and data part of the TCP message segment, and then inverses it to obtain the checksum. check and. After receiving the message, the receiving end performs verification in the same way. However, this error checking mechanism is relatively fragile, and at the same time, the probability of signal error during mobile wireless network transmission is relatively high, so a detection mechanism with higher capabilities is required to ensure data reliability. The present invention chooses to add CRC check at the application layer to ensure the accuracy of its data.

Through the cyclic redundancy check, the information receiving end can verify the accuracy of the entire control packet according to the CRC value, so that the accuracy and security of the control information are guaranteed, making the mobile video surveillance system more reliable and stable.

Figure 1 is the protocol stack model of the control layer, and Figure 2 is the format of the control information packet wherein: length: word length 16bit, refers to the length of the entire data packet; serial number: word length 16bit, its range is 0-65535, each Send a data packet, the serial number value increases by 1; packet type: word length 16bit, refers to the type of message load area; message load area: variable length data area, storing control messages; CRC check: word length 16bit, used by the receiving end To verify the correctness of the control message.

Figure 3 shows the framework of the control layer communication module as shown: it mainly consists of a message sending thread and a message queue. First, the client processing software is connected to the server through the TCP protocol, and a TCP communication link is established between the two, and then messages can be sent and received between the two. The message queue in this module has been receiving messages sent by the upper layer, and at the same time, the message sending thread obtains messages from the message queue and sends them to the server through the TCP communication link. This multi-thread design ensures that the control layer communication module runs as an independent module, which is beneficial to the independence of program development and the stability of program operation.

The communication module of the control layer is realized through a CRemoteCtr class.

Figure 4 is the program flow chart of the control layer communication module as shown: first, make a TCP connection, judge whether the connection is successful, and if successful, create a message processing thread, which reads the messages in the message queue cyclically, and performs packet and CRC on it Verification, and then transmitted to the server through the CDMA2000 network.

After obtaining the control message in the control module, the message is sent to the communication module of the control layer.

Claims (1)

1. an interface module of a mobile video surveillance system, characterized in that: the interface module comprises: The video playback interface module is used to display the video on the client terminal in various interface modes; the control interface module is used to be responsible for the user's control of the device and the display of control information on the customer service software; The control interface module includes a basic information control interface unit, a media information control interface unit, a network information control interface unit, and a local recording information control interface unit; The media information control interface unit includes a video resolution port, a code rate port, a frame rate port, a motion detection switch port, a motion detection sensitive port, and a motion detection area port; The network information control interface unit includes a media service port, a remote control port, a network mode selection port and an IP address port, and the TCP protocol is used as the transport layer protocol of the control layer communication module, and the TCP uses a 16-bit checksum to calculate and check , add a CRC check at the application layer, through the cyclic redundancy check, the information receiving end checks the accuracy of the entire control packet according to the value of the CRC. The local recording information control interface unit includes a recording switch, a recording mode selection port, a recording storage path selection port and a recording time setting port.