KR102521223B1 - Method and apparatus for examining breakdown of cctv camera network system - Google Patents

Abstract

The present invention relates to a method and an apparatus for diagnosing a failure of a CCTV camera network system. In accordance with the present invention, the method for diagnosing a failure of a CCTV camera network system includes: a POE output voltage check step of measuring an output voltage of a POE switch providing power to a CCTV camera, and determining whether the measured value exceeds a standard allowable range; a camera communication check step of determining whether a communication condition with the CCTV camera is abnormal by using a ping protocol; a communication network check step of determining whether a communication network connecting the CCTV camera with a monitoring manager is abnormal by using a traceroute protocol; and a step of calling a camera AS manager when the POE output voltage exceeds the standard allowable range, or when the communication condition is determined as abnormal in the camera communication check step, and calling a network communication AS manager when the communication network is determined as abnormal in the communication network check step. Therefore, the present invention enables monitoring even when a CCTV camera is malfunctioning.

Description

Failure diagnosis method and apparatus for CCTV camera network system {Method and apparatus for examining breakdown of cctv camera network system}

The present invention relates to a method and apparatus for diagnosing a network failure of a CCTV camera. POE output voltage check step for determining whether it exceeds an allowable range: camera communication check step for determining whether or not there is an abnormality in the communication state with the CCTV camera using a ping protocol; A communication network check step of determining whether or not there is an abnormality in the communication network connecting the CCTV camera and the monitoring operator using a traceroute protocol; If the output voltage of the POE exceeds the allowable range of the standard value or if an abnormality in the communication state is determined in the camera communication check step, the camera AS person in charge is called. It relates to a method for diagnosing a CCTV camera network failure, characterized in that it comprises a; step of calling.

In recent years, for security reasons, CCTV cameras are installed in various places and the cases of monitoring them are increasing. However, since the place where the CCTV camera is installed and the place where it is monitored are often far apart, such a monitoring system uses a dedicated communication network.

A configuration diagram related to such a conventional CCTV camera monitoring system is shown in FIG. The system includes a lot of equipment including a CCTV camera, and it can be seen that it is largely divided into a camera part and a network construction part according to the installer of the equipment. Therefore, even if a failure occurs, the installer is usually in charge of AS.

However, in general, when the video is not displayed during remote monitoring, it is common for the monitoring operator to determine this as a failure and call the CCTV camera company first. The CCTV camera AS person who received the call goes to the scene with a laptop and other network transmission equipment to inspect the CCTV camera. If it is determined that there is no abnormality in the CCTV camera after inspection, it reports to the monitoring operator that there is no problem in the camera unit. Then, the monitoring operator determines that the communication network is abnormal and calls the communication network AS person in charge.

After all, if there is no abnormality in the CCTV camera, the person in charge of the CCTV camera AS will be in vain, resulting in a loss of time and money due to unnecessary inspection. That is, in the conventional monitoring system, it was not possible to accurately find the cause of the failure, and accordingly, there was a problem in that a person in charge who could repair the failure could not be found.

In addition, in the prior art, monitoring was impossible at all when there was a problem with the camera, but there was a problem that there was no solution for this.

In addition, in the prior art, monitoring was impossible at all when there was a problem in the communication network, but there was a problem that there was no solution for this.

In addition, in the prior art, there was a problem in that video information could not be received at the time of failure, so that the general safety management headquarters, such as the fire department, could not be notified.

The present invention solves the above problems of the existing invention, and provides a CCTV camera network system failure diagnosis method and apparatus that accurately finds the cause of failure in the CCTV camera monitoring system and calls a person in charge to solve the cause of the failure. do it with

In addition, even if there is a failure in the communication network, when there is no failure in the CCTV camera, it is an object to provide a method and apparatus for diagnosing a CCTV camera network system failure that can be monitored.

In addition, when there is a failure in the communication network, the task is to provide a CCTV camera network system failure diagnosis method and device capable of taking minimum measures to solve the dangerous situation.

In order to achieve the above object, the CCTV camera network system fault diagnosis method of the present invention measures the output voltage of the POE switch that provides power to the CCTV camera, and determines whether the measured value exceeds the reference value tolerance range POE output voltage check step: camera communication check step of determining whether there is an abnormality in the communication state with the CCTV camera using a ping protocol; A communication network check step of determining whether or not there is an abnormality in the communication network connecting the CCTV camera and the monitoring operator using a traceroute protocol; If the output voltage of the POE exceeds the allowable range of the standard value or if an abnormality in the communication state is determined in the camera communication check step, the camera AS person in charge is called. It is characterized in that it comprises a; step of calling.

In addition, the POE output voltage checking step may further include switching to an auxiliary power supply and notifying the monitoring operator when the measured value exceeds a reference value tolerance range.

In addition, in the communication network check step, when the CCTV camera operates normally even when an abnormality is determined in the communication network state, a still cut of the image information received from the CCTV camera is sent to the monitoring operator using a separate external communication network. to be

In addition, it is characterized in that the video information of the still cut is analyzed, and when it is determined that it is an emergency accident, it is notified to the comprehensive safety management headquarters.

In addition, the CCTV camera and communication network fault diagnosis device according to the present invention determines whether there is an abnormality in the output voltage of the POE switch connected to the CCTV camera, determines whether there is an abnormality in communication with the CCTV camera using a ping protocol, and traces Using a route protocol, it is determined whether there is an abnormality in the communication network between operators remotely monitoring the CCTV camera, and in case of an abnormal output voltage of the POE switch or an abnormal communication with the CCTV camera, the camera AS manager is notified, and in case of an abnormality in the remote monitoring network A control unit notifying the communication network AS person in charge; an auxiliary power supply unit supplying power to the camera when the output voltage of the POE switch is abnormal; a display unit for displaying failure information when the control unit determines that the failure occurs; and a communication unit for transmitting still cuts of image information received from the camera to a remote operator through an external communication network when the CCTV camera operates normally even when the control unit determines that the communication network is out of order.

According to the present invention, there is an advantage of accurately finding the cause of failure in the CCTV camera monitoring system and calling a person in charge to solve the cause of the failure.

In addition, there is an advantage that monitoring is possible even if the CCTV camera is out of order.

In addition, even when there is a failure in the communication network, there is an advantage in that monitoring is possible.

In addition, when there is a failure in the communication network, there is an advantage in that it is possible to take minimum measures to solve the dangerous situation.

Figure 1: A diagram showing the configuration of a monitoring system using a conventional CCTV camera
Figure 2: Flow chart of a CCTV camera network system fault diagnosis method according to an embodiment of the present invention
Figure 3: Block diagram of a CCTV camera and communication network failure diagnosis device according to an embodiment of the present invention

Hereinafter, a method and apparatus for diagnosing a failure of a CCTV camera network system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. First of all, it should be noted that among the drawings, the same components or parts are indicated by the same reference numerals as much as possible. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the gist of the present invention.

The CCTV camera network system fault diagnosis method of the present invention is composed of a POE output voltage check step (S110), a camera communication check step (S210), and a communication network check step (S310). The POE output voltage check step (S110) and camera communication check step (S210) are steps for diagnosing a failure of the camera end, and the communication network check step (S310) is a failure of the communication network (dedicated network or WAN) between operators from the camera end onwards. is the stage of diagnosis.

First, the POE output voltage check step (S110) will be described.

In general, POE (Power Over Ethernet) is a technology for transmitting DC power along with data on a CAT5 Ethernet line, designated as a standard by the IEEE, and two standards, 802.3af and 802.3at, are defined.

For example, if you want to install multiple CCTVs in various places, you need to install a power line for powering the camera and a data line for transmitting video signals, respectively. It is also used in various IoT devices (Internet of things) in addition to CCTV because the line installation can be considerably simplified if power is supplied using POE.

The POE switch 200 is also connected to the CCTV camera 100 used in the present invention. Checking the voltage of the output terminal of the POE switch means checking the voltage of the input terminal of the CCTV camera. By checking the output voltage of the PIO switch, it is determined whether the CCTV camera is out of order.

As a method of measuring the voltage of the POE switch, a method of using a voltage level self-measurement circuit using an OP AMP comparator is used at the (+) pole of the output terminal of the POE switch and the input terminal of the CCTV camera. In some cases, a method of checking the current flow by performing OPEN and SHORT inspections using a self-diagnostic circuit for input/output current using a photocoupler to the output voltage of the POE switch and the (-) pole of the camera input side can be used.

When the output voltage of the POE switch is out of the allowable range of the reference value, the control unit 310 recognizes it as a failure. The allowable range is preferably 10% of the rated voltage. For example, if the reference voltage is 48V, if it exceeds 4.8V or falls below 4.8V, it is determined as a failure. Of course, even if it is out of the above 10%, it may be operated, but it may cause a potential failure. Of course, the causes of failure of CCTV cameras may be more diverse, but in experience, most failures can be determined by whether or not the voltage is supplied stably.

If the output voltage of the POE switch is out of 10% of the reference value, a camera AS manager is called (S130). Of course, you can also call a monitoring operator other than the camera AS person. Further, details of the failure are displayed on the display unit 320 .

Also preferably, when the output voltage of the POE switch is out of 10% of the reference value, the input means can be replaced with the auxiliary power supply unit 210. If the input means is replaced in this way, there is an advantage in that photographing information can be continuously obtained even in an emergency such as lightning.

On the other hand, if the output voltage of the POE switch does not exceed 10% of the reference value, it is determined that there is no failure, and the output voltage is checked again after a certain period of time.

Next, the camera communication check step (S210) will be described. The control unit performs a PING test to check the state of the communication line with the CCTV camera. Through the ping test operation, the response speed of the received ACK signal is checked, and if the reference time is exceeded or there is no response itself, it is determined to be a failure. In this case, a camera AS manager is called (130), failure information is displayed on the display unit 320, and log data is stored. By storing the log data, the time and cause of the failure can be clearly identified, more accurate and faster maintenance can be performed, and the defect rate for each equipment can be identified and used for future reconstruction and installation. Of course, in this case, more monitoring operators may be called.

Meanwhile, if the response speed is normal as a result of the ping test, the PING test is repeated after a certain period of time.

Next, the communication network check step (S310) will be described. The communication network here means a communication network between the monitoring operator after the CCTV camera-POE switch. It can be a dedicated network or a WAN. On the other hand, as shown in Figure 3, various communication equipment is connected between the monitoring operator after the CCTV camera and the communication network failure diagnosis device according to the present invention. That is, network IP transmission equipment 410, switching hub 420, router (not shown), relay server (not shown), storage server (not shown), management server (not shown), storage (not shown), NVR ( Not shown), the operation server 500, the monitor 510, etc. may be connected to a communication network.

The control unit 310 performs a communication network check step (S310) using a trace route (TRACE ROUTE) protocol. A trace route is a network command that traces the path information and the delay time in each path until reaching the designated host on the network. It is a viewing protocol. In other words, it is possible to check each route that is connected, through which route (ROUTING) the connection is made, and how much speed delay exists in which section.

Therefore, the control unit checks the communication network by checking various communication devices connected to the communication network. Do (S340). In this case, the monitoring operator may also be called together.

Meanwhile, the control unit has failure information for all equipment from CCTV cameras to monitoring operation servers. Therefore, it is possible to score and list failure information such as failure type, failure period, failure frequency, etc. for each equipment and company, and provide it to the monitoring operator or integrated procurement system of the state/local government. Using the failure information may be helpful when repurchasing or when a third party configures the system of a new business.

On the other hand, if the communication equipment from the end of the camera to the monitoring operator fails, the monitoring operator naturally becomes unable to view the shooting information. However, according to the method and apparatus for diagnosing a failure of a CCTV camera network system according to the present invention, even when a failure occurs in the communication equipment between the camera end and the monitoring operator, predetermined captured image information can be monitored.

That is, when there is no abnormality in the camera end and a failure occurs only in the (wired) communication network, the control unit continuously receives and stores image information from the CCTV camera, and makes a still cut of the image information for wireless transmission. The communication unit 330 sends the still cut of the image information to the operation server (of the monitoring operator) using a separate external communication network. In this way, the monitoring operator can perform minimal monitoring through still cuts even during maintenance periods of the communication network, even if not through video.

Also preferably, the control unit performs image analysis on the still cut (S410). As a result of performing the video analysis, if it is determined to be an emergency accident, the comprehensive safety management headquarters 600 related to the fire station and police station is called, and shooting information and camera location information are provided together. Emergency accidents refer to violence, fire, intrusion, etc., and algorithms for judging these from still cut images have already been developed in various ways, so further explanation will be omitted.

In addition, when a CCTV camera is installed on the road, the presence or absence of black ice on the road surface can be determined through the image analysis. In this case, when it is determined that black ice on the road surface exists, location information of the camera and image information of the black ice may be sent to the general safety management headquarters (600). The comprehensive safety management headquarters may provide the camera location information (i.e., road location information) to a vehicle moving nearby.

On the other hand, in recent years, CCTV image leakage has occurred, and security problems such as ransomware have occurred. Therefore, the CCTV camera and communication network fault diagnosis method according to the present invention utilizes the edge computing function of the equipment to adopt the best security solution based on OPEN API and adopts quantum encryption technology to encrypt backup data.

Hereinafter, with reference to FIG. 3, a CCTV camera and a communication network failure diagnosis device according to an embodiment of the present invention will be described. Since a significant part was mentioned in the description of the method invention, duplicate contents will be omitted.

The CCTV camera and communication network failure diagnosis device 300 is composed of a control unit 310, a display unit 320, and a communication unit 330, and is the same enclosure as the POE switch 200 and the auxiliary power supply unit 210 (not shown). can be located within. In general, since CCTV cameras are often installed in high locations, high supports are used. It is common that the housing is installed at the lower part of the holding bar.

The POE switch is as described above, and the auxiliary power supply is replaced when the output voltage of the POE switch is abnormal.

The communication unit is responsible for communication with the CCTV camera and communication with the network IP transmission equipment at the rear end, but includes separate wireless communication. That is, even if the CCTV camera and the communication network failure diagnosis device according to the present invention are out of order (from 410), the video information of the CCTV camera is transmitted to the outside. The configuration after the network IP transmission equipment is the same as the conventional technology.

In the above, optimal embodiments have been disclosed in the drawings and specifications. Although specific terms have been used herein, they are only used for the purpose of describing the present invention and are not used to limit the scope of the present invention described in the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims.

100 CCTV cameras
200 POE switch
210 auxiliary power unit
310 Control
320 display unit
330 communications department
410 network IP transmission equipment
420 switching hub
500 operation server
510 monitor
600 General Safety Management Headquarters
N network

Claims (5)

Measure the output voltage of the POE switch that provides power to the CCTV camera, determine whether the measured value exceeds the reference value tolerance range, and switch to auxiliary power if the measured value exceeds the reference value tolerance range , POE output voltage check step notifying the monitoring operator:
A camera communication check step of determining whether or not there is an abnormality in communication with the CCTV camera using a ping protocol;
A communication network check step of determining whether or not there is an abnormality in the communication network connecting the CCTV camera and the monitoring operator using a traceroute protocol;
If the output voltage of the POE exceeds the allowable range of the standard value or if an abnormality in the communication state is determined in the camera communication check step, the camera AS person in charge is called. Including; calling
In the communication network check step, if the CCTV camera operates normally even when it is determined that the communication network is abnormal, still cuts among the image information received from the CCTV cameras are sent to the monitoring operator using a separate external communication network, and the still cuts A method for diagnosing a CCTV camera network system failure, characterized in that by analyzing the video information and notifying the comprehensive safety management headquarters if it is determined to be an emergency accident.
delete delete delete delete

Images