KR20060067929A - Camera apparatus having on-screen display function and monitoring system using the same - Google Patents

Abstract

The present invention incorporates various sensors in a plurality of cameras currently used in closed-circuit TVs (hereinafter referred to as 'CCTV') and receives analog and digital signals through the sensors and through the corresponding cameras and adjacent cameras. The present invention relates to a camera device having an OSD function for displaying acquired sensor signals and video signals on a monitor device, and a surveillance system using the same.

Surveillance system according to the present invention comprises a plurality of surveillance camera devices with one or more sensors built-in and OSD function, one or more monitors, recording devices and speakers for displaying images captured by the surveillance camera devices A monitoring system, comprising: a central processing unit for controlling a composite image including OSD characters input by the one or more surveillance camera devices to be displayed on the respective monitors corresponding thereto; An input device for directly inputting a specific message on the display, and an OSD module for outputting the specific message input by the input device in real time as a OSD text on the monitor with the composite image corresponding to the specific message under the control of the control unit; Image and detection for a specific area, characterized in that configured Information display and can be stored together, as is the effect of spreading the risk area to prevent the risk of the non-drawn, also has the effect of fire occurring in the non-monitoring blind spots in the camera can be quickly prevented in advance.

Monitor, OSD Circuit, Adjacent Area, CCTV, Surveillance Mode

Description

Camera Apparatus Having On-Screen Display Function And Monitoring System Using the same}

1 is a block diagram showing a schematic configuration of a monitoring system to which the present invention is applied.

FIG. 2 is a detailed view of the camera apparatus of FIG. 1.

3 is a detailed view of the central processing unit of FIG. 1.

4 is a flowchart showing an example of operation in the monitoring system according to the present invention.

4A illustrates an example of changes in temperature, humidity, and carbon dioxide concentration measured at predetermined time intervals.

Figure 4b shows an example of a flow chart for determining whether a fire occurs by the change in the concentration of temperature, humidity, carbon dioxide measured at predetermined time intervals.

5 is a view showing an example of the OSD screen displayed on the monitor in the monitoring system according to the present invention.

<Explanation of symbols for the main parts of the drawings>

Camera: 10-1, ..., 10n Cable: 20-1, ..., 20-n

Central processing unit: 50 Monitors: 60-1, ..., 60-n

Recorder: 70 Speaker: 80, 90

The present invention relates to a camera device having an OSD function and a surveillance system using the same, and more particularly, various sensors are used in a plurality of cameras currently used in closed-circuit TVs (hereinafter referred to as "CCTVs"). Built-in sensor receives analog and digital signals through the sensor and displays the sensor signal and video signal acquired through the camera and the adjacent camera on the monitor device. The present invention relates to a camera apparatus having an OSD function for controlling recording of image and sensor signals obtained through a camera to a recording apparatus, and a surveillance system using the same.

CCTV is generally used as a way to take pictures at a specific moment for the purpose of preventing theft and to check later if necessary.

In addition, the conventional CCTV surveillance system obtains an image through a plurality of cameras installed in each of a plurality of specific regions, displays it on a monitor and stores it in a recording device.

However, the conventional surveillance system as described above only displays an image of each designated region of the system, but fails to display other related information except an image of another region adjacent to the region, that is, a relationship between a dangerous area and an adjacent region. There was a problem that the information sharing function is not provided. When a danger occurs in a specific area due to the above problems, a function of simultaneously informing relevant information to adjacent areas and recording the related information is urgently required so that the problem does not spread.

Also, in the conventional CCTV surveillance system, a function of generating an alarm sound signal by installing a sensor independently of the camera as well as the camera has been proposed, but such a conventional surveillance system has a sensor independent of the camera. There was a problem in that it could not check the sensor's detection result through the monitor and could not check the current status in each area where the camera was installed. If the reference value is different, the absolute value may be detected after a considerable time has elapsed after the occurrence of a fire, depending on the surrounding environment, so that a fire occurrence in an area not monitored by the camera may not be diagnosed early.

An object of the present invention has been proposed to improve the problems in the prior art as described above, while increasing the relevance between a plurality of camera devices respectively installed in specific areas, and at the same time the image as well as the sensor for each monitor screen Provides a new type of camera device that expands the monitoring function and makes it difficult to artificially manipulate the recorded information by displaying related information through an On Screen Display (hereinafter referred to as 'OSD') menu on the screen. It is also an object of the present invention to provide a camera device capable of preventing the spread of fire in advance by detecting a fire occurring in an area not monitored by the camera at an early stage.

It is another object of the present invention to increase the relevance between a plurality of camera devices respectively installed in specific regions and at the same time to display the signal through the sensor on the screen as well as the image on each monitor screen (On Screen Display: OSD ') is to provide a surveillance system through a new type of camera device, which makes it possible to expand the surveillance function by displaying related information through menus and make it difficult to artificially manipulate recorded information.

According to a preferred embodiment of the present invention for achieving the above object, a lens assembly mounted on one side of the camera body of a predetermined shape and for photographing an object through the lens; And a camera circuit unit configured to process and transmit an image captured and introduced through the lens assembly, wherein the screen overlay unit transmits an overlay of a surveillance signal OSD text image on the image transmitted through the camera circuit unit. ; One or more detection sensors installed in the camera body and outputting a detection signal; A sensor controller electrically connected to the sensing sensors and converting a sensing signal transferred through the sensing signals into a digital signal; A control unit which controls the overall apparatus and applies a control signal to the screen overlay unit to process the digital signal transmitted from the sensor control unit to display an OSD character on an image transmitted through the camera circuit unit; A coaxial output unit installed at the other side of the camera body and electrically connected to the screen overlay unit and outputting a screen overlay image transmitted from the screen overlay unit; And a power supply unit for supplying power to the entire camera apparatus.

Preferably, it is characterized in that it further comprises an infrared transceiver for transmitting and receiving infrared rays mounted on the front of the camera body.

Also preferably, the sensors may include one or more of ultraviolet sensors for detecting temperature, humidity, gas, pressure, flame detection, smoke detection, light, or movement.

According to another aspect of the present invention, a plurality of surveillance camera devices each having one or more sensors and having an OSD function, one or more monitors, recording devices, and speakers for displaying images captured by the surveillance camera devices A surveillance system comprising: displaying composite images including OSD characters input by the one or more surveillance camera devices on the respective monitors, and additionally inputting a specific message on each monitor. There is provided a monitoring system comprising a central processing unit including an input device.

Preferably, when an abnormal signal is detected by the sensors, the central processing unit displays the detected contents in the OSD menu together with the image of each of the surveillance cameras in the abnormal signal detecting region and a predetermined portion on each designated monitor. In this case, the recording apparatus records the corresponding image and controls the speaker device to operate.

And, in the monitoring system, the sensor is a temperature, humidity, carbon dioxide concentration measuring sensor, the sensor measures the concentration of temperature, humidity, carbon dioxide at time intervals, and the fire is generated by the change amount of the stored temperature, humidity, carbon dioxide measured and converted Characterized by determining whether or not to display a danger signal,

The time interval is in the range of about 30 seconds to 3 minutes, and the temperature change reference value for the time interval is preferably in the range of 0.05 ° C to 0.3 ° C.

According to an embodiment of the present invention, the feature of the present invention can be recorded while monitoring the measurement items such as temperature, humidity, gas concentration of the industrial site in real time, so the current CCTV and measuring instruments (recorder) are used in parallel This can result in cost savings and improved convenience at the site.

Hereinafter, a monitoring system according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a schematic configuration of a surveillance system to which the present invention is applied, and FIG. 2 is a detailed view of the surveillance camera apparatus of FIG. 1.

As shown in the drawing, first, the surveillance system 100 monitors a plurality of cameras 10-1, ..., 10n installed in a specific area through cables 20-1, ..., 20-n, respectively. It is connected to the central processing unit 50 in the system operating unit 200.

Reference numeral 40 denotes an input device for transmitting a signal manipulated by the user.

The central processing unit 50 is a device that manages the monitoring system 100 as a whole and serves as a main control unit that operates through input / output processing of signals and overall devices of the monitoring system 100.

Reference numerals 60-1 to 60-n denote monitor devices, and display images obtained and processed from the plurality of cameras 10-1, ..., 10n under the control of the central processing unit 50. . These monitors 60-1 to 60-n are provided as many as the numbers corresponding to the numbers of the cameras 10-1 to 10n.

Reference numeral 70 denotes a recording device, which is a device for recording an image photographed by a predetermined camera for a predetermined time in accordance with a control signal from the central processing unit 50. This may be a video recording device (many or multiple recordings may be installed at the same time), but is not limited to this. Digital Video Recorder: DVR ').

Reference numerals 80 and 90 denote speaker devices, respectively, which are speaker devices installed inside and outside the surveillance system operation unit 200, and in particular, the external speaker 90 includes the respective cameras 10-1, .. Of course, one can be installed in each region where.

Reference numeral 11 denotes an infrared sensor mounted on the front part of the camera and operates in conjunction with the infrared transceiver 140, which will be described later.

Reference numeral 12 denotes temperature sensors installed in the cameras 10-1, ..., 10-n.

Reference numeral 14 denotes humidity sensors installed in the cameras 10-1, ..., 10-n.

Reference numeral 16 denotes thermal sensors installed in the cameras 10-1, ..., 10-n. The heat sensor 16 detects a person (invader) as heat.

Reference numeral 18 denotes gas detection sensors installed in the cameras 10-1, ..., 10-n.

On the other hand, although not shown, in addition to the motion sensor for detecting the movement of a specific object may be installed respectively. The type of the sensor installed is not limited.

The sensors 11, 12, 14, 16, and 18 installed in one surveillance camera device 10-1 are fixed to a predetermined portion of the outer surface of the surveillance camera device 10-1 so that the temperature and humidity of a corresponding region are fixed. It detects intruder and gas concentration and transmits detection signal. The image acquisition signal through the surveillance camera device 10-1 is transmitted to the central processing unit 50 via the cable 20-1.

Referring to FIG. 2, the surveillance camera 10-1 is a plurality of components integrally coupled to a board (not shown) manufactured in the form of one integrated board, so that predetermined components may be mounted therein as a whole. There is a predetermined shape of the camera body 110, the various devices are configured in the body (110). In the camera body 110, a lens assembly 120 including a lens is mounted on the front side, and a sensor 11 and an infrared transceiver 140 are mounted. The lens assembly 120 transmits an image photographed through a camera lens, and since it is a well-known technology, a detailed description thereof will be omitted.

Reference numeral 112 denotes a camera circuit, and serves to process and transmit an image captured and introduced through the lens assembly 120 in a circuit (including an image decoding and encoding processing unit).

Reference numeral 114 denotes a screen overlay unit, which is an element for implementing an on-screen display function, which is a feature of the present invention, and performs the same function as the OSD circuit described later. The video signal transmitted through the camera circuitry 112 is overlaid on the surveillance signal OSD character screen and transmitted.

Reference numeral 115 denotes an input port. The input port 115 is electrically connected to a microprocessor, which will be described later, and is connected to the external input device 400 and the external input device in a state of being electrically connected through a cable (or a connecting line). Input data can be directly received from 400 (optionally connected). This part is an example of the present invention to show an example that the user can be used after directly connecting the external input device 400 in a one-to-one way through the input port 115. In addition, it is possible to input a place and time through the external input device 400.

Reference numeral 116 denotes a microprocessor for controlling the overall apparatus, and controls the various sensors 11, 12, 14, 16 and 18, and processes the digital signal transmitted from the sensor controller 118 to the camera. The control signal is applied to the screen overlay unit 114 to display the OSD character on the image transmitted through the circuit unit 112.

Reference numeral 117 denotes a data storage unit capable of storing and reading data.

Reference numeral 118 denotes a sensor controller, which is electrically connected to a plurality of sensors 12, 14, 16, and 18 installed at predetermined positions on the bottom surface of the camera body 110 to receive a digital signal. It is responsible for converting.

For example, among the sensors 12, 14, 16, and 18, a fire is generated, and a digital signal of a predetermined time interval transmitted and converted from a temperature sensor, a humidity sensor, and a gas sensor (specifically, a carbon dioxide sensor) is converted. The data storage unit 117 stores the data. Since it is effective to extinguish within an initial five minutes after a fire occurs, the predetermined time interval is preferably set smaller than five minutes, and preferably set at an interval of thirty seconds, one minute, two minutes or so.

Reference numeral 119 denotes a coaxial output unit, which is installed at the rear end of the camera body 110 and electrically connected to the screen overlay unit 114, and displays the screen overlay image transmitted from the screen overlay unit 114. Transfer to the central processing unit 50. As another embodiment, when only one display device (or monitor) is used, the display device may be directly connected to the coaxial processing unit 50 and output directly.

Reference numeral 130 denotes a power supply unit for supplying power to the camera 10-1.

3 is a detailed view of the central processing unit of FIG. 1. As shown in the drawing, the central processing unit 50 reads and drives a program stored in the program storage unit 52, and at the same time, from the respective cameras 10-1, ..., 10-n. It includes a control unit 54 for receiving the input composite video signal (CS-1, ..., CS-n) and outputs to the corresponding monitor (60-1, ..., 60-n) do.

The OSD circuit 55 outputs the selected contents as on-screen text when a user (an administrator in this embodiment) wants to output a specific text message to a specific monitor through the input device 40 of the controller 54. It is a device for.

4 is a flowchart showing an example of operation in the monitoring system according to the present invention.

As shown in this figure, the operator first selects the monitoring mode (ST-2). In the surveillance mode, a monitor for displaying the status is set through signals input to cameras and sensors corresponding to a specific region, and a setting screen for selecting whether to record is displayed. That is, as a default, for example, serial numbers are stored in the order of monitor designation, and the monitoring mode is executed by storing the front and rear monitors of the corresponding numbers as adjacent monitors. If the current monitoring mode is set as default, the current mode is designated through the input device (not shown) (ST-3).

Of course, in step ST-3, the adjacent area monitor may be specified in another manner. For example, adjacent monitors can be specified by locating all monitors that display the area and assigning the number of adjacent monitors directly to each monitor. That is, when the first monitor is the monitor that the warning signal is activated, arbitrary monitors 5, 7, and 8 monitors can be designated as adjacent area monitors so that the OSD menu can be displayed at the same time. In this way, you can see the total installed area monitors for each real area and set up adjacent area monitors.

After the above step ST-3, the current monitoring state is displayed on the specific monitor as OSD characters (ST-4). In addition, as described above, a user (administrator) can input a separate text message on a specific monitor through the input device 40 in the control room (in this case, the screen is used instead of the current OSD sensing status display screen). Directly input screen is overlaid). In addition, the user can directly input the monitoring state by connecting the external input device 400 directly to the camera device.

On the other hand, unlike monitors that display OSD text along with the image of a specific region, a separate monitor can be installed so that the OSD text is collected and displayed separately so that the OSD text can be monitored separately.

After the above step ST-4, if an abnormal signal is detected (that is, a composite video signal in which the abnormal signal is detected), for example, a change in temperature, humidity, and gas concentration (specifically, the concentration of carbon dioxide) If an intruder is detected through a sensor associated with an infrared transceiver, or above a set numerical state, a warning sound is output to the speaker 80 installed in the monitoring unit 200, and, if necessary, an external speaker 90 installed in a corresponding region. Output a beep (ST-8). In this case, an OSD text message indicating whether a warning signal is activated is displayed on the monitor of the region (see FIG. 4).

At the same time as the step of ST-8, a danger signal is displayed on adjacent area monitors (preset) adjacent to the area where the warning signal is generated (see Fig. 4).

On the other hand, after the above steps ST-8 and ST-9, the respective cameras are photographed by the corresponding local camera for a predetermined time (preset) after the time when the alarm sounds with the indication of the danger state on each monitor. The recorded image (ST-10).

Referring to the drawings, a process of detecting a risk by a change amount of data measured and converted from a temperature and humidity sensor will be described. Detailed description of the same steps as described above will be omitted.

4A illustrates temperature, humidity, and carbon dioxide concentrations at predetermined time intervals, and FIG. 4B illustrates an example of a flow chart for determining whether a fire occurs based on temperature, humidity, and carbon dioxide concentrations measured at the predetermined time intervals. will be.

As shown in FIG. 4A, a process of detecting a fire occurring in a blind spot of a camera and displaying a danger signal using data measured at predetermined time intervals will be described with reference to FIG. 4B. Measure the temperature, humidity and carbon dioxide concentration at t ₁ of FIG. 4A and store the data converted into a digital signal in the data storage unit (ST-42), and store the temperature, humidity and carbon dioxide concentration data at t ₂ in the data storage unit. to save and (ST-44), and the measured conversion data from t ₁ to the comparison value.

By comparing the data measured at t ₁ with the data measured at t ₂ (ST-45), it is determined whether the temperature and carbon dioxide concentration have increased (ST-61), and when the temperature and carbon dioxide concentration has decreased, it is measured at t ₂ . Then, the converted temperature, concentration, and carbon dioxide data are stored as t ₁ region values to be compared (ST-46), and the temperature, concentration, and carbon dioxide are measured and converted again to be data at t ₂ (ST-48).

On the other hand, if the temperature and carbon dioxide concentration is increased, the temperature change, humidity change, carbon dioxide concentration change is calculated and stored in the data storage unit 117 (ST-63). If the absolute value of the temperature change, carbon dioxide concentration change and humidity change calculated by comparing the temperature change, humidity change, and carbon dioxide concentration change with each reference value (ST-65) is assumed to be a fire, Drives the speaker provided in the camera of the area, displays the danger signal on the adjacent area monitor (ST-8), while the digital data measured and converted from the sensor to the recording device for a predetermined time and the image data captured by the camera Save it (ST-10).

The smaller the reference value is, the earlier the fire can be detected, but if it is set too small, a danger signal may be displayed even when no actual fire has occurred. Therefore, in the case of temperature, for example, since the change in temperature in the atmosphere is usually 3 ° C. or less per hour, the reference value is preferably set slightly higher than 3 ° C. when the time interval is 1 hour. In the above, the time interval is preferably in the range of 30 seconds to 3 minutes less than 5 minutes in order to suppress fire early, and surely whether or not a fire occurs due to temperature change without error for the time interval. In order to sense, the reference value for the temperature change is preferably within the range of 0.05 ° C to 0.3 ° C.

As described above, it is possible to detect the occurrence of a fire at the early stage of the fire because the fire is determined based on the change in temperature, humidity and carbon dioxide concentration, and it is possible to detect the fire without changing the reference value regardless of the season. .

5 is a view showing an example of the OSD screen displayed on the monitor in the monitoring system according to the present invention.

As shown in the drawing, for convenience, the captured image is omitted and only the OSD state is displayed. Currently, there is shown a monitor screen in which a particular area monitor (60-3) detects the presence of an intruder and displays the state in which the warning signal is activated and the state being recorded in OSD characters. Also shown is an OSD character screen displayed on adjacent area monitors 60-2 and 60-4 currently set by default. The recording of the specific area monitor 60-3 is currently being recorded, and the adjacent area monitors 60-2 and 60-4 are simultaneously recorded with the recording of the specific area monitor 60-3. However, the present invention is not limited thereto, and for example, recording starts after the recording time (selectively set for 10 minutes, 20 minutes, 30 minutes and 1 hour, 2 hours, etc.) of the specific region monitor 60-3 has elapsed. Or it may be set to record at the same time.

Of course, in the case of simultaneous recording, the recording devices may be connected and stored separately for each recording device corresponding to each monitor under the control of the controller 54. Of course, if the recording device 70 is a DV device, the images corresponding to the respective cameras may be stored by allocating a storage unit in the recording device 70. The detailed description thereof will be omitted since it is a general matter of the device.

As described above, according to the surveillance camera device having an OSD function and the monitoring system using the same according to the present invention, it is possible to record while monitoring the measurement items, such as temperature, humidity, gas concentration of the industrial site on the screen in real time Cost reduction and ease of use are improved in the field using CCTV and recorder in parallel, and artificial manipulation of recorded information can be difficult. In addition, it can display and store not only the area where the danger occurs but also the image and detection information of the adjacent area, which can prevent the spread of the danger area and the danger in advance, and it occurs in the blind area not monitored by the camera. It detects a fire at an early stage and has an effect of preventing the fire from spreading.

Although the present invention has been described with reference to the preferred embodiments, the present invention is not limited thereto, and various modifications can be made based on the following claims.

Claims (8)

A lens assembly mounted on one side of a camera body of a predetermined shape and configured to photograph an object through the lens; And a camera circuit unit configured to process and transmit an image photographed and introduced through the lens assembly. A screen overlay unit for overlaying the surveillance signal OSD character screen on the image transmitted through the camera circuit unit and transmitting the overlay; One or more detection sensors installed in the camera body and outputting a detection signal; A sensor controller electrically connected to the sensing sensors and converting a sensing signal transferred through the sensing signals into a digital signal; A microprocessor which controls the overall apparatus and applies a control signal to the screen overlay unit to process the digital signal transmitted from the sensor controller to display an OS character on an image transmitted through the camera circuit unit; A coaxial output unit installed at the other side of the camera body and electrically connected to the screen overlay unit and outputting a screen overlay image transmitted from the screen overlay unit; And A power supply unit for supplying power to the overall camera device; Camera device having an OSD function, characterized in that consisting of. The apparatus of claim 1, further comprising an input port mounted at a predetermined portion of the camera body and electrically connected to the microprocessor and receiving an input signal input from an input device capable of inputting letters and symbols. Camera device. The camera apparatus according to claim 1, further comprising an infrared transceiver configured to be mounted in front of the camera body to transmit and receive infrared rays. 4. The sensor of claim 1, wherein the sensors comprise one or more of ultraviolet sensors for sensing temperature, humidity, gas, pressure, flame detection, smoke detection, light or motion. Camera device with OSD function. A surveillance system comprising a plurality of surveillance camera devices having one or more sensors and having an OSD function, one or more monitors, recording devices, and speakers for displaying images captured by the surveillance camera devices, A central processing unit for controlling composite images including OSD characters input by the one or more surveillance camera devices to be displayed on the respective monitors corresponding thereto; An input device connected to the central processing unit and capable of directly inputting a specific message on each monitor; And a OSD circuit for outputting a specific message input by the input device in real time as a OSD character to a corresponding monitor together with a composite image corresponding thereto under the control of the controller. The method of claim 5, wherein when the abnormal signal is detected by the sensors, the central processing unit transfers the detected contents to the OSD menu together with the images of the respective surveillance cameras in the abnormal signal detection area and a predetermined portion on each designated monitor. Displaying, recording a corresponding image on a recording device, and controlling the speaker device to operate. The method of claim 5, wherein the sensor is a temperature, humidity, carbon dioxide concentration measuring sensor, the sensor measures the concentration of temperature, humidity, carbon dioxide at intervals of time, and the measured and converted stored temperature, humidity, the amount of change of carbon dioxide fire Surveillance system, characterized in that to display the danger signal by determining whether or not. The monitoring system according to claim 6, wherein the time interval is in the range of 30 seconds to 3 minutes, and the temperature change reference value for the time interval is in the range of 0.05 ° C to 0.3 ° C.

Images