KR20000001985A - Supervisory system and methode for storing supervised data - Google Patents

Abstract

PURPOSE: A supervisory system and a method for storing a supervised data is provided to stores safely an image data by performing a database for a photographed image data and storing the database. CONSTITUTION: A supervisory system comprises: a photographing device; a storage device for storing the photographed image data; and a display device(100) for displaying the photographed image data. The photographing device comprises one more digital steel camera; a thermal sensor(300); a microphone(400); and a micro computer(500). The storage device adds date data to the received image data, performs a database for the added data, and stores the database. The supervising system further comprises a serial interface device for transmitting the image data by connecting the photographing device and the storage device.

Description

Surveillance system and its surveillance data storage method

The present invention adds the date information to the digital data of an image photographed using one or several digital still cameras and records the data into a database, thereby eliminating deterioration in image quality and making the user searchable at any time. The system and the method of storing the surveillance data thereof, and in order to prevent the non-human object from being photographed by the camera, it is necessary to photograph only when both the heat and sound from the person are satisfied to reduce the amount of data to be recorded. It relates to a surveillance system and a method for storing the surveillance data thereof.

1 is a block diagram of a conventional monitoring apparatus, and as shown in FIG. 1, one or more analog cameras for photographing a subject's movement, and one or more analog cameras are sequentially selected, or the power of the camera, or the like. The control unit 10 in charge of the control, the monitor unit 20 for receiving a video signal transmitted from the analog camera selected by the control unit 10 to display on the screen so that the user can monitor, and the control unit 10 It consists of a VR recording device 30 for recording the video signal transmitted from the analog camera selected in the) to a recording medium such as a tape.

Looking at the prior art configured as described above is as follows.

Install each analog camera where surveillance is required.

Then, when monitoring is to be performed, the control unit 10 supplies power to the analog cameras respectively installed and drives the cameras.

Accordingly, the analog camera is driven to capture the current situation, and output the captured video signal to the controller 10.

At this time, the control unit 10 selects each camera in turn when a plurality of cameras are installed.

Then, the image output from the selected analog camera is transmitted to the monitor unit 20 for display.

Accordingly, the manager or the monitor monitors the image displayed through the monitor unit 20, and the image output from the analog camera is simultaneously transmitted to the VR recording apparatus 30 and recorded on a recording medium such as a tape.

When the recorded image is to be searched after the elapse of time, the search may be performed by using the tape recorded by the VR recording apparatus 30.

However, in the prior art as described above, if you want to record the monitoring information using the V-Cal recording device, it is necessary to replace the tape from time to time, so a large amount of tape is required, and the inconvenience of replacement, depending on the tape state As it affects a lot of image quality, if it is stored for a long time, the image quality deteriorates, so you can't see the clean image, and it is difficult to search because you need to search the tape one by one to find the desired scene.

Accordingly, an object of the present invention for solving the conventional problems as described above is to monitor the system to eliminate the inconvenience of having to replace the tape from time to time by recording the image taken by using a digital still camera to the recording medium And a method for storing the surveillance data thereof.

It is another object of the present invention to provide a surveillance system and a method for storing the surveillance data, by recording the image data photographed using a digital still camera as a digital, so that there is no deterioration in image quality even after long-term storage. have.

It is still another object of the present invention to provide a surveillance system and a method of storing the surveillance data, by which date information is recorded on a recording medium by adding date information to digital data of images taken by multiple cameras. Is in.

Still another object of the present invention is to provide a surveillance system and a method for storing surveillance data to minimize recording capacity of recording data by capturing only when both heat and sound conditions are satisfied in order to detect an object other than a human being photographed. In providing.

Still another object of the present invention is to provide a surveillance system and a method for controlling the surveillance data thereof, which can be installed without limitation of distance by transmitting an image captured by a digital still camera directly to a recording medium through a serial bus. .

1 is a block diagram of a conventional monitoring system.

Figure 2 is a block diagram for the monitoring system of the present invention.

FIG. 3 is a detailed configuration diagram of a digital still camera for photographing a subject in FIG. 2.

4 is a diagram illustrating a connection configuration of a digital still camera and a personal computer in FIG. 2.

5 is a flowchart illustrating a method for storing surveillance data of the surveillance system according to the present invention.

Explanation of symbols on the main parts of the drawings

100: monitor 200: camera

201,202: amplifier 203: envelope detector

204: microcomputer 300: infrared sensor for thermal detection

400: microphone 500: personal computer

The present invention for achieving the above object is a photographing means for photographing by the result of comparing the detected value of the subject movement and the reference value corresponding to the surrounding environment, and a storage means for storing the image data photographed by the photographing means And display means for receiving the image data photographed by the photographing means and displaying the image data on the screen.

In addition, the present invention is a comparison step of comparing the detected value of the movement of the subject and the reference value corresponding to the surrounding environment, the photographing step of continuously photographing the subject according to the comparison result in the comparison step, and the continuous shooting in the shooting step And a third step of storing the image data as a database.

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

2 is a block diagram of the monitoring system according to the present invention. As shown in FIG. 2, when both sound and heat (temperature) are detected through the infrared sensor 300 and the microphone 400 for thermal sensing, the movement of the subject is photographed. The personal computer 500 for storing the camera unit 200, the personal computer 500 storing image data photographed through the camera unit 200, and the image data output from the camera unit 200. The serial bus (RS-232C) to be transmitted to, and the monitor unit 100 for displaying the image data transmitted from the camera unit 200 on the screen.

The camera unit 200, as shown in Figure 3, the first amplifier 201 for amplifying and outputting a signal for the sound input through the microphone 400 to a predetermined level, and the first The envelope detection unit 203 for converting the level of the signal amplified by the amplifier 201 to a DC voltage value and outputting the output signal of the infrared sensor 300 for detecting heat generated from a human to a level that can be recognized. Amplifying and outputting the second amplifier 202 and the values output from the envelope detector 203 and the second amplifier 202 to the analog / digital input terminal (A / D1) (A / D2), respectively The microcomputer 204 is configured to judge whether or not photographing is performed by comparing with a reference value corresponding to and output a driving signal for continuous shooting for a predetermined time to a digital still camera.

FIG. 5 is a flowchart illustrating a method for storing surveillance data of the surveillance system according to the present invention. As shown in FIG. 5, a first step of comparing a value of a sound input through a microphone with a sound reference value corresponding to a surrounding environment ( S1), the second step (S2) of comparing the temperature value input through the infrared sensor for thermal sensing and the temperature reference value corresponding to the surrounding environment, and the sound in the first step (S1) and the second step (S2) And if the temperature is sensed, the continuous shooting for a predetermined time, and if any one of the sound and temperature is not detected, the third step of repeating until all are detected, and the fourth step of storing the image data photographed in the third step Consists of steps.

Referring to the operation and effect of the present invention configured as described in detail as follows.

Install digital still cameras (DSC) separately for surveillance.

And, as shown in Figure 2, the digital still camera (DSC) is equipped with a thermal sensing infrared sensor 300 for detecting a person and a microphone 400 for detecting a sound, respectively.

In order to detect the presence or absence of a person in the heat detection infrared sensor 300 mounted in this way, it detects the heat (temperature) from the person, outputs an analog signal for the detected heat (temperature), and in the microphone 400 In order to detect the sound of a person, a sound is detected, and an analog signal for the detected sound is output.

Then, as shown in FIG. 3, the camera unit 200 amplifies the signal to the envelope detector 203 by amplifying the analog signal for the sound output from the microphone 400 to the envelope detector 203. In addition, the second amplifier 202 is amplified to a level that can recognize the analog signal for the heat of the person output from the infrared sensor 300 for thermal detection to the analog / digital input terminal (A) of the microcomputer 204 (A). / D2).

Then, the envelope detector 203 converts the level of the analog signal for the sound provided by the first amplifier 201 to a DC voltage value and provides it to the analog / digital input terminal A / D1 of the microcomputer 204. .

Accordingly, the microcomputer 204 converts the analog values for the sound and the temperature input to the analog / digital input terminals A / D1 and A / D2 into digital values.

The microcomputer 204 then compares the value received through the analog / digital input terminal A / D1 with a reference value corresponding to the surrounding environment.

Here, the reference values corresponding to the surrounding environment are as follows.

Reference value corresponding to the surrounding environment = (Preset reference value + (average value) × (weighted value)) ... (1)

In Equation (1), since the SOUND level and temperature level are different according to the environment such as roadside or residential area, and depending on the season, the reference value can be set fluidly according to the surrounding environment so that the subject can be detected.

The reference value preset in Equation (1) is initially set and fixed, and is determined as an experimental value according to a region.

The average value is an average value of the values input to the microphone 400 and the infrared sensor 300 for thermal detection while the digital still camera is continuously stopped. It ignores the infrared sensor inputs and changes the reference value by averaging the sound and temperature levels to be taken as reference values while the digital still camera is not shooting.

The weight should be large in places with high noise such as roadsides to set the reference value considering the ambient noise, and low in the quiet area to set the reference value considering the ambient noise or temperature level.

As a result, the microcomputer 204 compares the sound value input through its analog / digital input terminal A / D1 with the sound reference value corresponding to the surrounding environment, and the temperature input through the analog / digital input terminal A / D2. Compare it with the temperature reference value corresponding to the value and the surrounding environment.

As a result of the comparison, when the sound input through the microphone 400 is greater than the sound reference value corresponding to the environment, and the temperature value detected by the infrared sensor 300 for heat detection is greater than the temperature reference value corresponding to the environment, the sound is continuous for a predetermined time. Shooting is performed, and the continuous shooting data is stored in the memory.

In addition, the microcomputer 204 of the camera unit 200 requests a communication permission to send data continuously photographed to the personal computer 500 through a serial bus such as RS232C, USB, or IEEE 1394.

When the personal computer 500 permits communication to the microcomputer 204 of the camera unit 200, the microcomputer 204 controls the memory of the digital still camera (DSC) to read the continuous shooting data from the personal computer 500. To send).

The digital still camera then transmits the continuous shooting data to the personal computer 500 via RS232C communication.

The personal computer 500 receives all of the continuous shooting data from the digital still camera and then deletes the continuous shooting data received through the digital still camera through RS232C communication. To pass.

Accordingly, the digital still camera erases the continuous shooting data stored in the memory under the control of the microcomputer 204.

As shown in FIG. 4, the personal computer 500 which has received the continuous shooting data from the digital still camera selects which camera to communicate with among the plurality of digital still cameras in the communication module 501 and selects the camera unit ( 200).

Then, when the microcomputer 204 of the camera unit 200 drives the corresponding digital still camera and transmits the continuous shooting data, the database module 502 classifies and stores the continuous shooting data in a database.

In the above database, the date information is added to the data and stored in a storage medium such as a hard disk so that the data can be searched by date.

Thus, the search becomes easy when the watcher or other related person finds a desired scene.

In addition, deterioration of image quality does not occur when the continuous shot image is stored or copied for a long time.

Referring to Figure 5 again with respect to the operation process as described above, the microcomputer 204 of the camera unit 200 through the analog / digital input terminal (A / D1) (A / D2) of the heat detection infrared The signal for temperature and sound input through the sensor 300 and the microphone 400 is converted into a digital value and received and then compared with a reference value corresponding to the environment.

As a result of comparison, when the temperature and sound values respectively input through the thermal sensor 300 and the microphone 400 are greater than the reference value, it is determined that there is a person and the digital still camera is driven for continuous shooting for a predetermined time. Do it.

Subsequently, the continuous shooting data is transferred to the personal computer 500.

Then, the personal computer 500 classifies several digital still cameras, and stores the continuous shooting data received from the classified cameras as a database.

In this way, the recording medium is recorded on the hard disk of the personal computer 500 without using a tape, and consumable costs are not incurred.

And it detects people and shoots only when they need them, so it uses less memory.

Therefore, according to the present invention, the images captured using a digital still camera are stored in a personal computer by storing them in a personal computer, so that there is no cost of consumables, and there is no deterioration in image quality even after long-term storage. Infrared sensors detect people and record only when microphones detect sound, minimizing recording capacity, and using serial buses to allow personal computers and cameras to communicate with cameras that are a few kilometers away Even if the screen transmission can be easily received, there is an effect that the distance is not restricted.

Claims (7)

Photographing means for photographing based on a result of comparing the detected value of the subject's movement with a reference value corresponding to the surrounding environment, storage means for storing the image data photographed by the photographing means, photographed by the photographing means And a display means for receiving image data and displaying the image data on a screen. The apparatus of claim 1, wherein the photographing means comprises at least one digital still camera, a heat sensing sensor attached to each of the digital still cameras to sense heat of a person, and attached to the digital still camera, respectively. And a microphone for sensing and a microcomputer for photographing a subject when both the sound and the heat are detected. The monitoring system according to claim 1, wherein the reference value corresponding to the surrounding environment is set to (preset reference value + (average value) x (weighted value)). The monitoring system according to claim 1, wherein the storage means adds the date information to the input image data and stores the data in a database. The monitoring system according to claim 1, further comprising a serial interface means for connecting image pickup means and storage means to transmit image data. A comparison step of comparing the detected value of the subject with a reference value corresponding to the surrounding environment, a photographing step of continuously photographing the subject according to the result of the comparison in the comparing step, and image data photographed continuously in the photographing step Surveillance data storage method of a surveillance system, characterized in that consisting of a storage step of storing the base. The method of claim 6, wherein the photographing step comprises: a sound comparison step of comparing a value corresponding to an input sound with a sound reference value corresponding to the surrounding environment, and a comparison with a value corresponding to the input temperature and a temperature reference value corresponding to the surrounding environment; And a temperature comparing step and a shooting step determining step of judging as a subject to be photographed when the sound and the temperature are greater than the reference value in the comparing step, respectively.