KR101794005B1 - Error detection system for network camera - Google Patents

Abstract

The present invention relates to a network camera error detection system, and more particularly, to a network camera error detection system that automatically detects in real time a failure of a system operation server of a network video surveillance system, a network server, The present invention relates to a network camera error detection system that enables an administrator to quickly recognize and cope with an error occurrence situation of a system including a network camera by notifying the manager of the status data, that is, the operation status of the system and the error occurrence status.

Description

Technical Field [0001] The present invention relates to a network camera error detection system,

The present invention relates to a network camera error detection system, and more particularly, to a network camera error detection system that automatically detects in real time a failure of a system operation server of a network video surveillance system, a network server, And more particularly, to a network camera error detection system which enables an administrator to quickly recognize and cope with an error occurrence situation of a system including a network camera by notifying the manager of the status data, that is, the operation status of the system and the error occurrence status.

2. Description of the Related Art Generally, a network camera is a device that can be connected to a client device by wire or wireless, and can transmit a shot image to a client device. The network camera converts the captured image analog-to-digital, encodes it, and transmits it through a wired / wireless network.

Such a network camera is widely used for capturing an image of each zone in a security system using CCTV (Closed Circuit Television). In the past, an IP address was allocated to a surveillance camera such as CCTV, It is provided for road, crime contingency area, building, house and so on.

For example, when a network camera is installed in a building or the like, a network video recorder (NVR) is installed in the building for controlling the network camera and storing the images separately. The network video recorder may be configured as a separate device or may be implemented on a PC (personal computer). Stores video of each network camera on a hard disk drive provided in the network video recorder, and backups the video to a control center and stores the video.

One example of the prior art network camera includes at least one network camera 110a to 110e, a storage medium 120, and a client device 130, as shown in FIG. 1, They are connected via a network to exchange data and control signals.

More specifically, the network cameras 110a to 110e have a photographing function and a signal processing function, and are photographing apparatuses capable of wired / wireless communication through a network. The network cameras 110a through 110e are, for example, cameras that are located in a surveillance zone in a security system and photograph each surveillance zone. The network cameras 110a through 110e are connected to the client device 130 via a network. The client device 130 is connected to the master network camera 110a so that the client device 130 can view and receive stored image data captured by the network cameras 110a to 110e and stored in the storage medium 120. [ In addition, the client device 130 may receive a real-time image photographed by the network cameras 110a to 110e through the master network camera 110a.

Meanwhile, the storage medium 120 stores images photographed by the network cameras 110a through 110e. The operation of storing the image data in the storage medium 120 is controlled by the master network camera 110a. The storage medium 120 may be, for example, a Network Attached Storage (NAS) connected to the network camera, a universal serial bus (USB) hard disk device, a secure digital (SD) card or a flash memory.

Meanwhile, the client device 130 may request a photographed image from the network cameras 110a to 110e, or may request a network camera setting change with the master network camera 110a. Client device 130 may be, for example, a network camera 110a through 110e and a personal computer (PC) connected to storage medium 120 via a network.

Such a network camera is installed at a remote place from the control center, and a large number of network cameras are installed in a wide area. In this case, it is practically impossible for a management person to directly check the operation state of the network camera and the network video recorder. Moreover, it is natural that the operation error of the network camera and the network video recorder can not be monitored in real time. Therefore, it is necessary to check the operation state of the remote in real time and control the operation.

The prior art related to network camera error monitoring including the above-described conventional network camera operating system is as follows.

Document 1: Korean Patent Laid-Open Publication No. 10-2011-0088229 (Network Camera and Network Camera Operation System and Method; filed on January 28, 2010)

Document 2: Korean Patent Registration No. 10-1454014 (System and method for real-time error monitoring of a network camera / network video recorder; filing date: Apr. 04, 2014)

In order to solve the above problems, the present invention provides a network video surveillance system for automatically detecting in real time a failure of a system operation server, a network server, That is, it is an object of the present invention to provide a network camera error detection system that enables an administrator to quickly recognize and cope with an error occurrence situation of a system including a network camera by notifying an administrator of an operation status and an error occurrence status of the system.

According to another aspect of the present invention, there is provided a control device including a program for performing an automatic check according to preset schedule information in a DB and storing a result in a DB, And generates an alarm when it is not in a non-connected state or an abnormal state, compares the state information collected through the agent unit 13 with a preset warning / trouble value to generate an alarm, , The received image is sent as an image file, and the image processing module analyzes the pattern using the image histogram analysis technique to generate an alarm such as No Video, black image, and image quality, and the received image is normal When PTZ control is performed, control command signals such as Pan / Tilt / Zoom are sent, and at the same time, The re-module converts the compression format of the received image into MPEG and stores the converted image. The image processing module analyzes the stored image using an image processing technique to determine whether the equipment is normally operated according to a control command signal, ); Provides a remote monitoring function for each occurrence information of the server unit 11, provides various log information such as a check log and an alarm log, and statistical information, enables registration, correction, and deletion of network equipment, A display unit 12 for managing setting information of the system such as time setting; An agent unit for collecting real-time operational status data of the server unit 11 and the display unit 12 and providing MMS data to the administrator terminal 14, sending mail data, providing status information, alarm information, 13). ≪ / RTI >

In the case of a transmission device (video server or network camera) according to the present invention, an actual image is received and a fault is automatically detected through pattern analysis through image processing and communication data analysis, CCTV and operating equipment to check the status of each one to check the hassle of eliminating the hassle.

Also, according to the present invention, the program periodically checks the status of the equipment automatically and informs the administrator of the status of the CCTV failure, thereby obtaining the effect of promptly and easily grasping the cause of the failure.

Further, the present invention checks system operation status such as CPU, RAM, network load, process operation status, disk capacity and status through hardware monitoring in addition to general failure occurrence equipment, And the like, thereby realizing an effect of preventing a failure in advance.

In addition, the present invention provides an effect of preventing a failure in advance by making it possible to inform in advance of a risk factor of occurrence of a failure such as a decrease in a video receiving state or a failure in storing an image when a load over a predetermined reference value occurs.

In addition, the present invention provides a UI, which is a visual system configuration, so that a system configuration and a network configuration can be easily grasped, and a failure occurrence position can be quickly and easily grasped.

In addition, when an alarm occurs, the present invention also obtains the effect of promptly responding to alarms of faults by transmitting text messages (MMS) and mail (SMTP) to an administrator and maintenance personnel in real time.

In addition, in the case of CCTV equipment, the present invention can check direct access using a CCTV API (SDK) and detour access through a VMS, and further, it is possible to check the state of the equipment based on the ONVIF standard.

1 is a block diagram schematically showing a conventional network camera system.
2 is a configuration diagram briefly showing a configuration according to an embodiment of the present invention.
FIG. 3 is a flowchart showing a network connection checking step of the present invention. FIG.
4 is a flowchart showing network traffic checking steps of the present invention;
5 is a flowchart showing a port open check step of the present invention.
6 is a flowchart showing steps of checking a hardware load state of the present invention;
7 is a flowchart showing an operation process checking step of the present invention;
8 is a flowchart showing the VMS status checking step of the present invention.
FIG. 9 is a flowchart showing the storage state checking step of the present invention. FIG.
10 is a flowchart showing an image checking end of the present invention.
FIG. 11 is a flowchart showing steps of checking the pan of the present invention. FIG.
12 is a flow chart showing the Tilt checking step of the present invention.
13 is a flowchart showing the Zoom checking step of the present invention.
14 is a flowchart showing a step of checking a video receiving frame of the present invention.
15 is a flowchart showing the automatic alarm sending step of the present invention.

The present invention is described below with reference to the accompanying drawings.

As shown in FIG. 2, the network camera error detection system 10 of the present invention is a control device including a program for performing an automatic check according to schedule information preset in a DB and storing the result in a DB, And receives the connection status information from the network device (camera) using the SNMP to be used, generates an alarm when it is not connected or abnormal, Generates an alarm, sends an image transmission command to the CCTV equipment, stores the received image as an image file, analyzes the pattern using the image histogram analysis technique in the image processing module, and outputs an alarm such as No Video, black image, And if the received video is normal and PTZ control is performed, control command signals such as Pan / Tilt / Zoom are transmitted At the same time, the image information format conversion / storage processing module converts the compression format of the received image into MPEG and stores it. The image processing module analyzes the stored image to determine whether the equipment operates normally according to the control command signal through the image processing technique A server unit (11) for generating a post alarm; Provides a remote monitoring function for each occurrence information of the server unit 11, provides various log information such as a check log and an alarm log, provides statistical information, registers, corrects, and deletes network equipment, A display unit 12 for managing setting information of the system such as time setting; An agent unit for collecting real-time operational status data of the server unit 11 and the display unit 12 and providing MMS data to the administrator terminal 14, sending mail data, providing status information, alarm information, 13). ≪ / RTI >

Herein, the server unit 11 of the present invention may include a network connection checking step S1, a network traffic checking step S2, a port opening checking step S3, a hardware load state checking step S4, The VMS status checking step S6, the storage status checking step S7, the video checking step S8, the pan / tilt checking step S9, the zoom checking step S10, the video receiving frame checking step S11, , And the automatic alarm sending step S12 may be sequentially or firstly performed.

First, in the network connection checking step (S1), the network connection checking step (S1) determines that the connection and status request can not be made using the SNMP protocol in the case of the network equipment (camera). In the case of the CCTV equipment, , Or may be a step of receiving the connection status request information from the VMS to confirm whether or not there is a failure and generating an alarm.

Next, the network traffic checking step (S2) may be a step of checking the network traffic used in the entire NCES system by checking the upload and download speeds of all the devices registered in the NCES.

Next, the port open check step (S3) may be a step of checking whether a port necessary for operating the system is open, recording the port open state information, and generating an alarm when the port is not open.

Next, the hardware load status checking step (S4) compares the MIB (management information base management information base) information with the set value using the SNMP, and the CPU, memory, and network load information confirmed by the MIB is higher than the set value And if it is maintained, generating an alarm.

Next, the operation process checking step (S5) may be a step of checking whether a process necessary for driving the system is running and generating an alarm when a required process is not operating.

Next, the VMS status checking step S6 may be a step of receiving VMS operation status information, video access and reception status information, and recording status information from the VMS solution and generating an alarm if there is an error.

Next, the storage state checking step S7 receives information on the recording state from the storage solution, generates an alarm when the storage is not normally operated, crosschecks the change of the actual H / W capacity and the recording state value And generating an alarm when recording is not normally performed.

Next, in the image checking step S8, the image to be received is stored as a jpg file, the image histogram is analyzed by using the cvCreateHist function of OpenCV, the analysis result value is divided by the value of 84480, 70000), it is judged that black image is obstructed when the set value is higher than the set value, and NoVideo trouble when the value is set to 0. If the histogram is used, it is judged that the image is a black image in the case of a bright image and a single color image. The RGB color values of the image are summed and then divided by the number of pixels to calculate an average of the color distribution), and a black screen failure is determined through the brightness determination of the image to generate an alarm when a failure occurs.

Next, the Pan / Tilt checking step S9 detects a motion vector with successive images, determines that the motion vector is normal if the set value is greater than or equal to the set value (default 10) It divides the continuous image of the moving image into frames by using OpenCV's cvRetrieveFrame function and detects motion vectors by using functions such as cvCalcMotionGradient and cvSegmentMotion of OpenCV The motion vector is detected more precisely by binarization, noise elimination, and motion detection, and when a failure occurs, the motion vector is detected more accurately by measuring the number of left / right or up / down motion occurrences, An alarm may be generated.

Next, the Zoom checking step S10 compares the jpg file stored before the zoom control with the jpg file after the zoom control. When the comparison result value is less than or equal to the set value (default 0.8) The images before and after the zoom control are stored as jpg files, and the correlation coefficients of the two images are obtained by using the cvMatchTemplate function of OpenCV for both images. If the obtained value is smaller than the set value, And generating an alarm when it occurs.

Next, the image reception frame checking step (S11) compares the incoming image frame when the image is received directly in comparison with the set received frame value, and based on the received frame per second, Detecting a frame abnormality, and generating an alarm when a frame is received out of the continuously set value and error range.

Next, the automatic alarm sending step S12 may be a step of automatically sending letters and e-mails from the administrator terminal 14 after checking whether an alarm is sent when an alarm is generated.

Meanwhile, the display unit 12 of the present invention includes a program configured to monitor data related to a network map, a hardware state, a network state, and an inspection status. The display unit 12 includes alarms, measures, It may be configured to monitor alarm, action, check, status propagation related to statistical history, network equipment registration, modification, deletion, check time setting and data backup / restoration information.

The agent unit 13 of the present invention collects real-time operational status data of the server unit 11 and the display unit 12 and transmits the MMS data to the administrator terminal 14, And a program configured to send and receive alarm information and setting change information via TCP / IP socket communication.

In the present invention, the administrator terminal 14 may be a portable terminal of a manager or a fixed terminal such as a PC.

For reference, terms of English words among the terms used above will be described as follows.

First, OpenCV is an open source computer vision library that focuses on real-time image processing. It can be used on various platforms such as Windows and Linux.

Next, FFmpeg is a computer program that records and converts various types of digital audio and video streams. FFmpeg works by directly inputting commands, and it consists of various free software and open source libraries. The library also includes libavcodec, which is a library of audio / video codecs used in various projects. There is also a libavformat audio / video multiplexing and demultiplexing library. The name of this project comes from the MPEG video standardization group, and "FF" before "mpeg" means "fast forward". The project was started by 'Fabrice Bellard' and is now continued by 'Michael Niedermayer'. Numerous FFmpeg developers are included in the MPlayer project, and FFmpeg hosts the MPlayer project server. FFmpeg was developed on Linux, but it can be compiled on most operating systems, including Apple, Windows, and Amiga OS.

Next, RTSP is a Real Time Streaming Protocol (RTSP), a communication protocol developed by the IETF in 1998 and defined in RFC 2326. RTSP is used in streaming systems and is used to remotely control the media server. The commands are similar to "VCR" like "PLAY" and "PAUSE", and access the server based on time information. It does not transmit actual media streaming data. Most RTSP servers use the RTP protocol to transmit real audio / video data to the transport layer.

Next, the MMS is a multimedia messaging service (MMS), which is developed in a SMS-based short message service (SMS), and generates multimedia messages such as pictures, sounds, and moving pictures. Most of them are built into mobile phones with built-in cameras or MP3 players, so you can easily take pictures and send messages using this service.

Next, SMTP is the Simple Mail Transfer Protocol (SMTP), a protocol used to send email from the Internet. The TCP port number used is 25. SMTP does not specify how messages are generated. Local edits or simple e-mail applications are used to generate messages. When the message is generated, the called SMTP receives the message and uses TCP to forward it to the SMTP of the other host

Next, ONVIF is the Open Network Video Interface Forum, a global open industry forum designed to facilitate the development and use of global open standards for the interface of physical IP-based security products. In other words, IP products within video surveillance and other physical security areas create standards for how they can communicate with each other.

Next, SNMP is a Simple Network Management Protocol, a standard protocol for monitoring various hardware and software in a network. SNMP helps network administrators manage network performance and find and fix network problems. An administrator can query a server that supports SNMP to receive data, and conversely, a value can request a setting.

Next, the SDK is a software development kit, typically a development tool that enables a software technician to create an application for a particular software package, a software framework, a hardware platform, a computer system, a game machine, an operating system, . Typically, a software engineer receives a software development kit (SDK) from the developer of the system. Often downloaded to the Internet. In many cases, it is provided free of charge to encourage the use of the system or language.

Next, Telnet is a network protocol used for Internet or local area network connections. It was developed in 1969, starting with RFC 15, and standardized as IETF STD 8 as one of the first Internet standards.

Next, Tracert is a computer network diagnostic utility that displays rough routes through the Internet, records information for that interval, and measures packet transmission delays over the Internet protocol network.

Hereinafter, the operation of the present invention will be described.

First, the present invention is a control device including a program for performing an automatic check according to schedule information preset in a DB and storing the result in a DB, and receives connection status information from the network device using SNMP used in the NMS, An alarm is generated in the case of a connection or an abnormal state, and an alarm is generated by comparing the state information collected through the agent unit 13 with a preset warning / trouble value, and an image transmission command is sent to the CCTV equipment, After saving as an image file, the image processing module analyzes the pattern using the image histogram analysis technique to generate an alarm such as No Video, black image, and image quality. If the received image is normal and PTZ control is performed, the Pan / Tilt / Zoom, etc., and the video information format conversion / storage processing module converts the compression format of the received video into MPEG The image processing module includes a server unit 11 for generating an alarm after analyzing whether the equipment is normally operated by a control command signal through an image processing technique using a stored image, Provides a remote monitoring function for each occurrence information of the server unit 11, provides various log information such as a check log and an alarm log, provides statistical information, registers, corrects, and deletes network equipment, A display unit 12 for managing setting information of the system such as time setting; An agent unit for collecting real-time operational status data of the server unit 11 and the display unit 12 and providing MMS data to the administrator terminal 14, sending mail data, providing status information, alarm information, 13). ≪ / RTI >

Herein, the server unit 11 of the present invention may include a network connection checking step S1, a network traffic checking step S2, a port opening checking step S3, a hardware load state checking step S4, The VMS status checking step S6, the storage status checking step S7, the video checking step S8, the pan / tilt checking step S9, the zoom checking step S10, the video receiving frame checking step S11, , And an automatic alarm sending step (S12) are sequentially or firstly performed.

First, in the network connection checking step (S1), the network connection checking step (S1) determines that the connection is not successful if the connection and status request can not be made using the SNMP protocol. In case of the CCTV equipment, It connects directly to TCP / IP according to the equipment, or it receives the connection status request information from the VMS and confirms whether it is faulty and generates an alarm. As shown in FIG. 3, the server unit 11 collects unique identification information of a plurality of network cameras and confirms whether the network cameras are registered, IP connection, and determines whether the TCP / IP connection is established. If the connection is successful, the hardware load condition is checked. If the connection fails, the display unit 12 and the agent unit 13 Or an alarm is given to the display unit 12, the agent unit 13, and the administrator terminal 14 at the same time as an alarm, and then the inspection is terminated.

Next, the network traffic checking step S2 checks the upload and download speeds of all the devices registered in the NCES and checks the network traffic used in the entire NCES system. As shown in FIG. 4, the server unit 11 reads the alarm generation information on the network usage amount, receives the upload and download data of each network device, The agent unit 13 or the display unit 12 or the display unit 12 or the display unit 12 and the display unit 12 in order to determine whether the amount of usage is larger than the preset value, And the agent unit 13 and the administrator terminal 14, and repeats the process from the step of receiving the upload and download data of each network equipment when the usage amount is small.

Next, in the Port Open check step S3, the server unit 11 checks whether a port necessary for operating the system is open, records the port open state information, and generates an alarm when the port is not opened Lt; / RTI > In the Port Open check step S3, as shown in FIG. 5, the necessary Open Port information is loaded, the individual Port using the Telnet is checked, and it is determined whether or not the connection is established. If the connection is made An alert is given to the display unit 12, the agent unit 13, the display unit 12, the agent unit 13, and the administrator terminal 14 to warn the user of a Port Open failure, and when the connection is established If the check is completed, the check is terminated. If the check is not completed, the process is repeated from the step of checking the individual port using the telnet.

Next, the hardware load status checking step (S4) compares the MIB (management information base management information base) information with the set value using the SNMP, and the CPU, memory, and network load information confirmed by the MIB is higher than the set value And if it is maintained, generating an alarm. 6, the server unit 11 requests the MIB information, loads the hardware configuration information, analyzes the MIB information and the description information, The display unit 12 and the agent unit 13 or the display unit 12 and the agent unit 13 (not shown) are connected to the CPU, If the abnormality is found, it is determined that there is an abnormality in the memory status. If there is an abnormality, the display unit 12 The agent unit 13 or the display unit 12, the agent unit 13 and the administrator terminal 14, and also records an alarm and simultaneously determines whether there is an abnormality in the network state. If there is no abnormalityAnd if there is an abnormality, an alarm is given to the display unit 12, the agent unit 13 or the display unit 12, the agent unit 13 and the administrator terminal 14, .

Next, the operation process checking step (S5) may be a step of checking whether a process necessary for driving the system is running and generating an alarm when a required process is not operating. In the operation process checking step S5, the server unit 11 loads the essential operation process information, reads the entire process list operating in the OS, compares the list with the running process, determines whether the essential operation process is in operation If the process does not operate, an alarm is issued to the display unit 12 and the agent unit 13 or the display unit 12, the agent unit 13 and the administrator terminal 14, If the check is completed, the check is completed. If the check is not completed, the process is repeated from the comparing process with the active process.

Next, the VMS status checking step S6 may be a step of receiving VMS operation status information, video access and reception status information, and recording status information from the VMS solution and generating an alarm if there is an error. 8, the server unit 11 requests the VMS status information to analyze the status information, determines whether there is an abnormality in the video access and reception status, If there is an abnormality, an alarm is given to the display unit 12, the agent unit 13, the display unit 12, the agent unit 13, and the administrator terminal 14, If there is an abnormality in the image storage state, the display unit 12, the agent unit 13 or the display unit 12, the agent unit 13, and the manager The alarm is signaled to the terminal 14 at the same time as an alarm, and the check is terminated when there is no abnormality.

Next, the storage state checking step S7 receives information on the recording state from the storage solution, generates an alarm when the storage is not normally operated, crosschecks the change of the actual H / W capacity and the recording state value And generating an alarm when recording is not normally performed. As shown in FIG. 9, the storage state checking step S7 checks the H / W capacity change and analyzes the state information while requesting the storage information, and if the state information reception result does not exist An alarm is given to the display unit 12, the agent unit 13 or the display unit 12, the agent unit 13 and the administrator terminal 14, The display unit 12, the display unit 12, the agent unit 13, and the display unit 14 are displayed on the display unit 12 and the agent unit 13, respectively, An alarm is issued to the administrator terminal 14 at the same time as an alarm is given and a change of the H / W capacity is checked after the alarm for the status information has not been received and the recording is completed. If there is no change, it is determined as a recording failure and an alarm is given to the display unit 12, the agent unit 13 or the display unit 12, the agent unit 13 and the administrator terminal 14, do.

Next, in the image checking step S8, the image to be received is stored as a jpg file, the image histogram is analyzed by using the cvCreateHist function of OpenCV, the analysis result value is divided by the value of 84480, 70000), it is judged that black image is obstructed when the set value is higher than the set value, and NoVideo trouble when the value is set to 0. If the histogram is used, it is judged that the image is a black image in the case of a bright image and a single color image. The RGB color values of the image are summed and then divided by the number of pixels to calculate an average of the color distribution), and a black screen failure is determined through the brightness determination of the image to generate an alarm when a failure occurs. 10, the server unit 11 receives an image and stores the image as a JPG file, analyzes the histogram and RGB color information, and outputs the histogram analysis result value The display unit 12 and the agent unit 13 or the display unit 12 and the agent unit 12 are determined as black image failures when the result value is larger than the set value, 13, and the administrator terminal 14, and checks the result. If the result is less than the set value, it is determined whether the result is 0. If the result is 0, The alarm is notified to the agent unit 13 or the display unit 12, the agent unit 13 and the administrator terminal 14 at the same time as the alarm and the inspection is finished. If the result is not 0, do.

Next, the Pan / Tilt checking step S9 detects a motion vector with successive images, determines that the motion vector is normal if the set value is greater than or equal to the set value (default 10) It divides the continuous image of the moving image into frames by using OpenCV's cvRetrieveFrame function and detects motion vectors by using functions such as cvCalcMotionGradient and cvSegmentMotion of OpenCV The motion vector is detected more precisely by binarization, noise elimination, and motion detection, and when a failure occurs, the motion vector is detected more accurately by measuring the number of left / right or up / down motion occurrences, An alarm may be generated. In the pan checking step S9, as shown in FIG. 11, the image is controlled by rotating the image to the left and right, the image is stored as an AVI file, After converting and dividing the frame, the image binarization is performed, noise is removed, motion is detected, the motion vector count is extracted, and the extracted result value is compared with the set value. If the set value is larger than the set value, If it is smaller than the set value, it is determined that a Pan failure has occurred and an alarm is issued to the display unit 12, the agent unit 13 or the display unit 12, the agent unit 13 and the administrator terminal 14, do.

As shown in FIG. 12, in the tilt checking step S9, the image is controlled by rotating the image up and down, the image is stored as an AVI file, and the moving image using the FFmpeg After the image is converted into a file and the frame is divided, the image is binarized, noise is removed, motion is detected, the motion vector count is extracted, and the extracted result value is compared with the set value. If the set value is larger than the set value, And if it is smaller than the set value, it is determined that a Pan failure has occurred and an alarm is given to the display unit 12, the agent unit 13 or the display unit 12, the agent unit 13 and the administrator terminal 14, Lt; / RTI >

Next, the Zoom checking step S10 compares the jpg file stored before the zoom control with the jpg file after the zoom control. When the comparison result value is less than or equal to the set value (default 0.8) The images before and after the zoom control are stored as jpg files, and the correlation coefficients of the two images are obtained by using the cvMatchTemplate function of OpenCV for both images. If the obtained value is smaller than the set value, And generating an alarm when it occurs. As shown in FIG. 13, the Zoom checking step S10 may control the image while enlarging / reducing the image, storing the images as JPG files, comparing the images, and comparing the result values with the set values If the value is larger than the set value, it is determined that a zoom error has occurred and an alarm is given to the display unit 12, the agent unit 13 or the display unit 12, the agent unit 13 and the administrator terminal 14, Ends the check, and ends the check if it is less than the set value.

Next, the image reception frame checking step (S11) compares the incoming image frame when the image is received directly in comparison with the set received frame value, and based on the received frame per second, Detecting a frame abnormality, and generating an alarm when a frame is received out of the continuously set value and error range. As shown in FIG. 14, the server unit 11 loads reception frame setting information and starts image reception, checks a reception frame per second, and compares the received frame with a frame (S11) If the result is different from the set value, it is determined whether the result value is larger or smaller than the set value. If the result value is larger than the set value, An alarm is issued to the display unit 12, the agent unit 13 or the display unit 12, the agent unit 13 and the administrator terminal 14, The agent unit 13 or the display unit 12, the agent unit 13, and the administrator terminal 14 to warn the user of the alarm.

Next, the automatic alarm sending step S12 may be a step of automatically sending letters and e-mails from the administrator terminal 14 after checking whether an alarm is sent when an alarm is generated. As shown in FIG. 15, when the alarm is generated as described above, the server 11 compares the alarm delivery information with the alarm delivery information, and if the alarm delivery is not generated, When the alarm delivery has occurred, it is determined whether or not to broadcast the character or mail to the administrator terminal 14, and then the message or mail is sent and then the transmission is terminated. And sends the text or mail, and then ends the transmission.

In the case of a transmission device (video server or network camera), the present invention as described above detects an obstacle by automatically analyzing pattern analysis and communication data analysis through image processing by receiving an actual image, It is possible to eliminate the hassle of checking the equipment status individually.

Also, according to the present invention, the program periodically checks the status of the equipment automatically and informs the administrator of the CCTV failure status so that the cause of the failure can be quickly and easily grasped.

Further, the present invention checks system operation status such as CPU, RAM, network load, process operation status, disk capacity and status through hardware monitoring in addition to general failure occurrence equipment, Etc., in real time, so that the failure can be prevented in advance.

Further, according to the present invention, when a load exceeding a predetermined reference value is generated, a risk of a failure such as a decrease in a video reception state or a failure to store an image can be informed in advance, thereby preventing a failure in advance.

Further, the present invention provides a UI that is a visual system configuration, so that the system configuration and the network configuration can be easily grasped, and the fault occurrence position can be quickly and easily grasped.

In addition, in the present invention, when an alarm occurs, text messages (MMS) and mail (SMTP) are transmitted to an administrator and a maintenance person in real time, so that an alarm for a failure can be promptly responded.

In addition, in the case of CCTV equipment, the present invention can check direct access using a CCTV API (SDK) and detour access through a VMS, and further check the state of the equipment based on the ONVIF standard.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

In addition, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims.

Accordingly, all such appropriate modifications and changes, and equivalents thereof, should be regarded as within the scope of the present invention.

10: Network camera error detection system 11:
12: display section 13: agent section
14: administrator terminal

Claims (14)

The control device includes a program for performing automatic checking according to schedule information preset in the DB and storing the result back into the DB. The control device receives the connection status information from the network device using SNMP used in the NMS, An alarm is generated, an alarm is generated with the state information collected through the agent unit 13 by comparing with a predetermined warning / trouble value, an image transmission command is sent to the CCTV equipment, and the received image is stored as an image file The image processing module analyzes the pattern using the image histogram analysis technique to generate alarms of No Video, black image, and image quality. If the received image is normal and PTZ control is performed, the control command signal of Pan / Tilt / At the same time, the video information format conversion / storage processing module converts the compression format of the received video into MPEG and stores it, Image-processing module the server unit 11 to the equipment generating an alarm after analysis that the normal operation by the control command signal through the image processing techniques using the stored image; Provides a remote monitoring function for each occurrence information of the server unit 11, provides various log information and statistical information of the inspection log and alarm log, enables registration, correction and deletion of network equipment, A display unit (12) for managing system setting information of time setting; An agent unit for collecting real-time operational status data of the server unit 11 and the display unit 12 and providing MMS data to the administrator terminal 14, sending mail data, providing status information, alarm information, 13)
The server unit 11 performs a network connection check step S1, a network traffic check step S2, a port open check step S3, a hardware load state check step S4, an operation process check step S5, A storage state checking step S7, an image checking step S8, a pan / tilt checking step S9, a zoom checking step S10, a video receiving frame checking step S11, an alarm automatic sending step (S12) sequentially or firstly,
And the network camera error detection system. delete The method according to claim 1,
In the network connection checking step (S1), it is determined that there is a failure when connection and status requests can not be made using the SNMP protocol in case of network equipment. In case of CCTV equipment, TCP / IP, or receiving the connection status request information from the VMS to check for a fault and generating an alarm,
And the network camera error detection system.
The method according to claim 1,
The network traffic checking step S2 is a step of checking the network traffic used in the entire NCES system by checking the upload and download speed of all the devices registered in the NCES,
And the network camera error detection system. The method according to claim 1,
The port open check step (S3) is a step of checking whether a port necessary for driving the system is open, recording the port open state information, and generating an alarm when the port is not open,
And the network camera error detection system.
The method according to claim 1,
The hardware load state checking step S4 compares the MIB information with the set value using SNMP and generates an alarm when the CPU, memory, and network load information confirmed by the MIB is maintained higher than the set value.
And the network camera error detection system.
The method according to claim 1,
The operation process checking step S5 is a step of checking whether a process necessary for driving the system is running and generating an alarm when a required process is not operating,
And the network camera error detection system.
The method according to claim 1,
The VMS status checking step S6 is a step of receiving VMS operation status information, video connection and reception status information, and recording status information from the VMS solution and generating an alarm when there is an error,
And the network camera error detection system.
The method according to claim 1,
The storage state checking step S7 receives the information on the recording state from the storage solution, generates an alarm when the storage is not normally operated, cross checks the actual H / W capacity change and the recording state value, If it is not, generating an alarm,
And the network camera error detection system.
The method according to claim 1,
The image checking step S8 is to analyze the image histogram using the cvCreateHist function of OpenCV after storing the currently received image as a jpg file, divide the analysis result value by the value of 84480, and if the remaining value is less than the set value, If the histogram is used, it is judged that the image is a black image in the case of the bright image and the single color image. Therefore, the RGB color information is extracted and the brightness of the image is determined through the black Determining whether a screen failure has occurred and generating an alarm when a failure occurs;
And the network camera error detection system.
The method according to claim 1,
The Pan / Tilt checking step S9 detects a motion vector with successive images, determines that the motion vector is normal if the set value is greater than or equal to the set value (default 10), and determines that the stored AVI file is a failure, It is possible to change the image as much as possible, divide the continuous image of the moving image into frames by using OpenCV's cvRetrieveFrame function, detect the motion vector by using cvCalcMotionGradient and cvSegmentMotion function of OpenCV The motion vector can be more accurately detected through binarization, noise elimination, and motion detection, and an alarm is generated when a failure occurs. Step,
And the network camera error detection system.
The method according to claim 1,
The Zoom checking step S10 compares the jpg file stored before the zoom control with the jpg file after the zoom control and determines that the comparison result is normal if the comparison result is less than or equal to the set value, File, and the correlation between two images is obtained by using OpenCV's cvMatchTemplate function. If the obtained value is smaller than the set value, it is judged that it is normal or large, and an alarm is generated when a failure occurs Step,
And the network camera error detection system.
The method according to claim 1,
The image receiving frame checking step (S11) compares incoming image frames when the image is received directly in comparison with the set received frame value, and based on the received frames per second, if receiving more or less than the received image frame, And generating an alarm when a frame is received out of a continuously set value and error range,
And the network camera error detection system.
The method according to claim 1,
The automatic alarm sending step S12 is a step of automatically sending letters and e-mails from the administrator terminal 14 after confirming whether an alarm is sent when an alarm occurs,
And the network camera error detection system.

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