KR100193808B1 - Intensive monitoring method for the location of abnormality in the monitoring system - Google Patents

Abstract

[Technical field to which the claimed invention belongs]

In the surveillance system, audio and video signals sequentially input from a plurality of cameras are separately determined to determine an abnormal occurrence position and to be intensively recorded or displayed on a monitor.

[Technical Problem to Solve]

As the recording continues regardless of whether there is an abnormality in the monitoring position, the method of shortening the life of the video cassette tape and the video cassette recorder or recording in conjunction with the inputs of various sensors may include a separate sensor or a circuit for processing the sensor. This solves the problem of rising costs.

[Summary of the solution of the invention]

After installing and driving multiple cameras for monitoring in the surveillance system, if audio and video signals from the multiple cameras are sequentially selected and input at regular intervals, when the audio level or video movement is greater than the set reference value It is determined that the abnormality occurs, and the input signal of the camera at the position where the abnormality occurs is intensively recorded or displayed on the monitor.

[Important Uses of the Invention]

It is applied to the centralized monitoring of the location of abnormality in the monitoring system.

Description

Intensive monitoring method for the location of abnormality in the monitoring system

1 is a configuration diagram of the abnormal occurrence position centralized monitoring apparatus according to the present invention.

2 is a control flowchart for intensively monitoring a signal of an abnormal occurrence position camera according to the present invention.

* Explanation of symbols for main parts of the drawings

10: input selector 12, 34: signal separator

14 audio processor 16 level detector

18, 30: comparison unit 20: reference value setting unit

22: control unit 24: video processing unit

26: motion detector 28: accumulator

32: logic control unit

The present invention relates to a method for intensive monitoring of an abnormal occurrence position of a monitoring system, and more particularly, to an intensive monitoring method for intensively recording or displaying a separate abnormal occurrence position of audio and video signals sequentially input from a plurality of cameras. It is about.

In general, the monitoring system is used for security such as crime prevention and disaster prevention, and it is used to monitor business offices in contact with customers such as banks, securities companies and post offices, the front of safes, the monitoring of the platform of stations, the monitoring of highways and tunnels, Video cameras are used for various surveillance purposes, such as surveillance of workshops and warehouses in various factories. Such surveillance video cameras record the situation using a long time video cassette recorder (VCR) that can continuously record images on the monitor, and combine the video sensor with the monitor to rapidly change the screen such as human intrusion. In this case, it is used for a wide range of applications, such as automatically operating the camera and generating an alarm.

However, in the conventional method of monitoring and recording a specific position using only a video camera, it is possible to record at a weak time or a weak position or to record in conjunction with input of various sensors attached to the outside.

The conventional fixed recording method as described above has a problem of shortening the lifespan of the video cassette tape and the video cassette recorder as the recording continues mechanically regardless of the abnormality of the monitoring position. The method of adding a separate sensor or a circuit for processing the sensor has a problem that the cost is increased.

Accordingly, it is an object of the present invention to provide an apparatus and method for monitoring the occurrence of abnormality position that solves the above problems.

It is another object of the present invention to provide an apparatus and method for detecting an abnormal position at which an abnormal occurrence position of each audio and video signal sequentially input from a plurality of cameras is detected and intensively recorded or displayed on a monitor.

The present invention for achieving the above object is to install and drive a plurality of cameras for monitoring in the monitoring system in several places and then sequentially inputs audio and video signals output from the plurality of cameras at predetermined time intervals to the audio level or When the motion of the video is greater than the set reference value, it is determined that the abnormality occurs, and the input signal of the camera at the position where the abnormality occurs is intensively recorded or displayed on the monitor.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of an abnormality occurrence position monitoring apparatus according to the present invention, an input selection unit 10 for sequentially selecting and outputting signals input from a plurality of cameras by a predetermined channel selection signal, and the input selection A signal separator 12 for separating and outputting a signal output from the unit 10 into an audio signal and a video signal, and processing and outputting the audio signal separated and output from the signal separator 12 into a level value. An audio processor 14, a level detector 16 for detecting a level of a signal converted into a level value from the audio processor 14, and a reference value setting unit for generating and outputting a set reference audio level value and a reference video signal 20 and a ratio for comparing the level value detected by the level detection unit 16 with the reference audio level value output from the reference value setting unit 20 to output an audio size determination signal. And a video processor 24 for separating and outputting the video signal separated from the signal separator 12 into a luminance signal and a color signal, and a digital signal for the luminance signal output from the video processor 24. A motion detector 26 for detecting a motion state by converting the signal to a motion controller; an accumulator 28 for storing a motion detection signal detected by the level detector 16 for a predetermined time; and a motion output from the accumulator 28. A comparison unit 30 for outputting a motion state determination signal by comparing the detection signal with a reference video signal output from the reference value setting unit 20, an audio size determination signal output from the comparison unit 18, and the comparison unit A control unit 22 for inputting a motion state determination signal output from the control unit 30 to determine audio size or video movement and outputting a channel selection signal, and a channel selection signal output from the control unit 22; A logic controller 32 for inputting and converting into a logic signal and outputting the logic signal to the input selector 10; and a signal processor 34 for processing a signal selected from the input selector 10 and outputting the signal to a monitor or a video cassette recorder. It consists of.

2 is a control flowchart for intensively monitoring a signal of an abnormal position camera according to the present invention. The process of determining whether or not an audio signal or a video signal is input after selecting a signal interlocking recording mode, and the audio signal or video signal When is input, it enters the interlocking control mode and if it is not normal, it consists of the process of centralized recording control of the signal of the corresponding channel.

One preferred embodiment according to the present invention will be described in detail with reference to FIGS. 1 to 2 above.

First, a plurality of cameras (not shown) are driven to capture a corresponding monitoring position so that the captured video signal and audio signal are respectively applied to the input selector 10. After that, in step 101, the system is initialized and the process proceeds to step 102, and the interlocked recording mode is set. The controller 22 outputs the channel selection signal at a predetermined time interval according to the program. The channel selection signal output from the control unit 22 is applied to the logic control unit 32 and converted into a logic signal, and the converted logic signal is applied to the input selection unit 10 to sequentially output signals from a plurality of cameras. To choose. Here, the channel selection signal refers to a signal for selecting audio or video signals respectively output from a plurality of cameras.

In this case, the signal separator 12 separates the signal selected and output from the input selector 10 into an audio signal and a video signal and outputs the separated signal. The audio processor 14 processes the audio signal separated from the signal separator 12 and outputs the converted audio signal to a level value. The level detector 16 detects the level of the signal converted into a level value from the audio processor 14. The reference value setting unit 20 generates and outputs a set reference audio level value and a reference video signal. The comparison unit 18 compares the level value detected by the level detection unit 16 with a reference audio level value output from the reference value setting unit 20 and outputs an audio size determination signal. The video processor 24 separates and outputs the video signal separated from the signal separator 12 into a luminance signal and a color signal. The motion detector 26 detects a motion state by converting the luminance signal output from the video processor 24 into a digital signal. The accumulation unit 28 stores the motion detection signal detected by the level detector 16 for a predetermined time. The comparison unit 30 outputs a motion state determination signal by comparing the motion detection signal output from the accumulation unit 28 with the reference video signal output from the reference value setting unit 20. At this time, the controller 22 inputs the audio size discrimination signal and the motion state discrimination signal from the comparators 18 and 30 and proceeds to step 104. In step 104, the controller 22 checks whether the video channel signal is input and proceeds to step 106 when the video channel signal is input. However, if the video channel signal is not input in step 104, the process proceeds to step 105. If the audio channel signal is input, the process proceeds to step 106. If it is not input as an audio channel signal, the process returns to step 103. Goes. In step 106, the controller 22 checks whether the input audio channel signal or video channel signal is normal. That is, it is checked whether the audio signal is louder than the set value and the sound is louder or the video signal is louder than the set value. At this time, the controller 22 determines that the audio signal and the video signal are not normal when they are larger than the set value. Therefore, in step 107, if it is not normal, the controller 22 outputs a channel selection signal to the input selection unit 10 so as to continuously select the currently selected signal. Then, the input selector 10 continuously selects the channel signal of the specific camera and outputs the signal to the signal processor 34 so that the position where the abnormal state occurs can be intensively recorded. In step 110, the controller 22 checks whether video is being recorded, and returns to step 103 if it is recording, and ends the program if not. However, if the input of the audio signal and the video signal is normal in step 107, the controller 22 enters the sequential switching mode in step 109. Then, in step 111, the controller 22 outputs a channel selection signal for selecting signals input from the plurality of cameras, and applies it to the input selection unit 10. Therefore, since the input selector 10 sequentially selects and switches the signals input from the plurality of cameras and outputs the signals to the signal processor 34, the signals input from the plurality of cameras are sequentially sequenced at predetermined time intervals through the video cassette recorder. Record or display on the monitor and exit the program.

In an exemplary embodiment of the present invention, when the audio or video signal is sequentially selected by the input selection unit 10 at a predetermined time interval and becomes larger than the set reference value, it is determined that the abnormality occurs and the signal of the abnormally generated position is intensively recorded and monitored. The display unit 22 outputs a channel selection signal to the input selection unit 10 so as to randomly select an audio signal or a video signal at a predetermined time interval, so as to be larger than the set reference value. It is also possible to implement the present invention without deviating from the scope of the present invention by intensively recording and displaying the camera signal at the abnormal position by determining that the abnormality occurs.

As described above, the present invention installs and drives a plurality of cameras for monitoring in a monitoring system, and then sequentially inputs audio and video signals output from the plurality of cameras at predetermined time intervals, thereby controlling the audio level or video. When there is more movement than the set reference value, it is determined that an abnormality occurs, and thus the monitoring efficiency can be improved by intensively recording or displaying the input signal of the camera at the position where the abnormal state occurs.

Claims (1)

A method for centralized monitoring of an abnormality occurrence position of a surveillance system comprising a camera for photographing a subject and outputting a video signal and an audio signal, a monitor for displaying a video signal, and a video cassette recorder for recording a video signal. Sequentially selecting a signal input from the camera by a predetermined channel selection signal, separating the signal of the selected output camera into an audio signal and a video signal, and detecting the level of the separated audio signal Determining an audio size in comparison with an audio level value, determining a motion state by comparing the separated video signal and a reference video level value, and wherein the audio size determination signal and the motion state determination signal are equal to or greater than a reference set value. Intensive recording of the currently selected camera's signal when detected Or an abnormal occurrence position of the monitoring system, characterized in that the process consisting of displaying on the monitor.