KR101075874B1 - Video transmission system - Google Patents

Abstract

The present invention relates to an image transmission apparatus, and in particular, to improve the remote monitoring environment, to realize the image quality of the image transmitted to the monitoring system of the central control center more clearly and cleanly, and according to the installation location, angle, and monitoring point of the camera. An object of the present invention is to provide an image transmission device capable of controlling an irradiation angle of an LED security light.
To this end, in the present invention, the information acquisition unit for converting and compressing the analog image information input from the camera photographing the periphery of the surveillance area into digital image information, and storing the digital image information in real time connected to the information acquisition unit through a network It includes an image management unit for displaying and storing to receive and monitor, and controls the operation, the information acquisition unit further includes an auxiliary memory for receiving and storing the digital image information from the point of failure when the network failure occurs, The video management unit controls the storage of digital video information in the auxiliary memory when the network operation status is unstable based on SNMP, and then separately records the digital video information stored in the auxiliary memory when the network operation status is stabilized. Integrated video management system to control transmission to server The image transmission apparatus further comprising a are provided.

Description

Video transmission system

The present invention relates to an image transmission device, and more particularly, to improve the surveillance environment of a long distance by the high illumination characteristics of a high-brightness LED light and to collect a picture from a camera and to further improve the image quality of an image transmitted to a monitoring system of a central control center. It can be realized clearly, and by controlling the irradiation angle and operation of LED security lights according to the installation location, angle, and monitoring point of the camera, the camera can capture the monitoring point more accurately and efficiently, and also detect the network connection status in real time. When the network is abnormal, the captured image is automatically transmitted to the integrated video management control unit in the central control center, so that it can be safely and quickly stored in the security and surveillance video transmission device that can safely and accurately store all acquired images regardless of the administrator's knowledge. It is about.

In general, security and surveillance video transmission devices are installed in security vulnerable areas around residential areas or schools, in vulnerable places that employees cannot manage all the time, and in public facilities such as banks, department stores, airports, and ports. By monitoring, storing, and analyzing field images in real time to the central control center, the situation manager can take safety checks and procurement measures to prevent various accidents, dangerous situations, and crimes in advance.

As an example of such an image transmission apparatus, an image transmission system having a security function is disclosed in Korean Patent No. 10-1037870. This enables simultaneous monitoring, guidance and warning broadcasting, and LED lamp control in real time from the terminal of the remote manager and related organizations, and the LED lamp can be used to secure the shooting range at night or in the dark. Discernable video capture is possible.

In addition, when an emergency call signal is transmitted during an emergency situation such as a crime, a call indication and a warning sound are generated in real time from a remote manager terminal, and at the same time, a camera within a certain network unit watches the corresponding area, so that the culprit may be impressed or escaped. By collecting information such as direction, image information and location information can be delivered to related organizations.

However, in the conventional video transmission device, since the LED lamps are integrally formed on both sides of the camera, it is possible to secure the efficiency of the installation space and reduce the cost, but there are many dusty days in the atmosphere such as fog or yellow dust. As the light is scattered on the camera, the screen of the monitoring image obtained from the camera is not clear and blurred due to the backlight, and the irradiation angle of the LED lamp cannot be adjusted so that the illumination is limited in one direction, so the monitoring point is out of the range. In this case, the video information cannot be properly secured, and since only a short distance can be projected, the direction is inferior, and the maximum distance (within 20 m) that the light can reach is limited.

On the other hand, most video transmitters use the so-called Local Recording technology, which stores images captured by cameras on an SD memory card before sending them to a central monitoring center's monitoring computer. The video taken by the camera can be monitored at the central control center.

However, since the video transmission system does not always detect the network status, if the administrator does not know the normal return time in the event of network disconnection or instability, it is necessary to manually import the video temporarily stored in the SD memory card. The old image stored in the memory card is deleted in order when the storage capacity is exceeded, there is a problem that can not properly collect the captured image when the network stored in the SD memory card is unstable.

Accordingly, the inventors of the present invention devised and completed the present invention while making an effort to develop a new image transmission apparatus focusing on solving the above-mentioned matters and problems.

Accordingly, an object of the present invention is to provide a video transmission apparatus that can improve the remote surveillance environment and to implement a clearer and clearer image collected by the camera.

Another object of the present invention is to provide an image transmission device that can obtain a more accurate and clear image by controlling the irradiation angle and the operation of the LED security light according to the installation location and angle, the monitoring point of the camera.

Still another object of the present invention is to provide an image transmission apparatus capable of accurately and safely storing all captured images regardless of administrator's knowledge.

In order to achieve the above object, an embodiment of the present invention, an information acquisition unit for converting and compressing the analog image information input from the camera photographing the periphery of the surveillance area into digital image information and storing; It is connected via an information acquisition device and a network to display and store digital image information in real time to monitor and display, and includes a video management unit for controlling the operation. It further includes a secondary memory for receiving and storing the image information, the video management unit, based on the SNMP control the storage of the digital image information in the auxiliary memory when the network operation is unstable, and then the network operating state When the stability is stable to provide a video transmission device further comprises an integrated video management control for controlling to transmit and store the digital video information stored in the auxiliary memory to a separate recording server.

Thus, the present invention automatically detects network conditions such as instability or disconnection of the network connecting the information acquisition unit of the monitoring site and the video management unit of the central control center in real time, and when a network failure occurs, digital image information from the point of failure occurs. By separately storing the data in the auxiliary memory, it is possible to accurately and safely store all captured images regardless of whether the administrator is in a network state.

In addition, the information acquisition unit according to an embodiment of the present invention, the LED security lights provided in a plurality of radially on the top of the camera, the security control unit connected to the image management unit and the network through the network to control the irradiation angle of the LED security lights and control the blinking and According to the control of the security light control unit can provide an image transmission device comprising a vertical angle adjustment unit for rotating the LED security light in the vertical direction.

In addition, the vertical angle adjustment unit according to an embodiment of the present invention, the first motor for providing a rotational driving force under the control of the security light control unit, the first worm coupled to the rotating shaft of the first motor, and the LED security lights respectively mounted And a first worm wheel engaged with the first worm to rotate.

In addition, the information acquisition unit according to an embodiment of the present invention can provide an image transmission apparatus further comprises a left and right angle control unit for rotating the LED security light in the left and right direction under the control of the security light control unit.

In addition, the right and left angle control unit according to an embodiment of the present invention, the second motor for providing a rotational driving force under the control of the security light control unit, and the security that is installed a second worm and LED security light coupled to the rotating shaft of the second motor It is possible to provide an image transmission device, comprising a second worm wheel mounted on the central axis of the back block and engaged with the second worm to rotate.

In addition, the information acquisition unit according to an embodiment of the present invention can provide an image transmission device characterized in that the high-brightness LED lighting is provided around the camera.

The present invention having the above-mentioned means and configuration to solve the problem is to improve the poor monitoring environment at night or in the dark or long distance through the camera equipped with a high-brightness LED light, the installation location and angle of the remote control center, such as monitoring By simply controlling the operation and irradiation direction of the LED security light according to the point or site situation, you can get a clear and clear high-definition surveillance image with a wide field of view and automatically monitor the network status such as network instability or disconnection in real time. If the network detects a failure and stores the digital image information from the point of failure in the auxiliary memory separately, all the captured images can be stored accurately and safely regardless of whether the administrator is in the network.

1 is a block diagram schematically showing the configuration of an image transmission apparatus according to an embodiment of the present invention;
2 is a front configuration diagram schematically showing an information acquisition unit of an image transmission device according to an embodiment of the present invention;
3 is a plan view schematically illustrating an information acquisition unit of an image transmission device according to an embodiment of the present invention;
4 is a flowchart illustrating an image transmission process of an image transmission apparatus according to an embodiment of the present invention;

Hereinafter, embodiments according to the present invention will be described more specifically with reference to the accompanying drawings.

Prior to this, the following terms are defined in consideration of the functions in the present invention, which specifies that the concept should be construed as a concept consistent with the technical spirit of the present invention and commonly understood or commonly recognized in the art.

In the following description, well-known functions or constructions are not described in detail to avoid obscuring the subject matter of the present invention.

1 is a block diagram schematically showing a configuration of an image transmission apparatus according to an embodiment of the present invention, FIG. 2 is a front configuration diagram schematically showing an information acquisition unit of an image transmission apparatus according to an embodiment of the present invention, and FIG. Is a plan view schematically showing an information acquisition unit of an image transmission device according to an embodiment of the present invention.

Referring to FIG. 1, an image transmission apparatus according to an exemplary embodiment of the present invention converts and compresses analog image information input from a camera photographing a surrounding area of a surveillance area, such as a parking lot, an entrance, an office, a store, etc., into digital image information, and stores the image. At least one information acquisition unit 100, and each of the information acquisition unit 100 is connected through a network to receive and display the digital image information in real time, the image management unit 200 for controlling the operation It is configured to include.

The information acquisition unit 100 digitizes and compresses an image of a subject input through the camera 120 into an electric image signal through the camera 120 under the control of the local controller 110 and then compresses the image memory 130. And then, it is transmitted to the image management unit 200 in real time through a wired or wireless communication network connected to the network interface 180.

Here, the image processing unit 125 is provided with an AD converter for converting the image provided from the camera 120 to an analog method, and a compression unit for compressing a video screen using a video compression standard. Accordingly, the analog image photographed from each camera 120 is converted into a digital image through an AD converter, compressed by a compression standard by a compression unit, and provides compressed image information to the image management unit 200 through a network. Done.

In addition, the information acquisition unit 100 further includes an auxiliary memory 150 for receiving and storing digital image information from the time of occurrence of failure when a failure occurs in the network.

That is, the auxiliary memory 150 is made of an SD memory card for storing an image inserted into the camera 120, and is photographed by the camera 120 when the network is disconnected or in an unstable state in which a certain level or more of network bandwidth is not stably supplied. It receives a real-time video and saves it temporarily until the network is restored normally.

In addition, the information acquisition unit 100 is provided with an interphone 160 for the audio signal transmission and reception processing with the image management unit 200, it is possible to call between the monitoring area and the central control center, the angle of irradiation from the image management unit 200 The LED security light 145 under the control of the adjustment and blinking is provided to realize the image quality of the surveillance video at night or in the dark clearly and cleanly, and eliminate the hot spots, and the high-brightness LED light around the camera 120 (170). ), It is possible to block the scattering of light due to fog or dust in the air, and to acquire the image of long distance (more than 20M from the installation point of the camera) clearly and cleanly. It can quickly alert you or cause alertness.

In particular, the LED security light 145 is provided on the top of the camera 120, that is, radially around the horizontal axis of rotation of the camera is provided with a plurality of intervals approximately 60 degrees.

The LED security light 145 is monitored by the upper and lower angle control unit 141 and the left and right angle control unit 142 operating under the control of the security light control unit 140 connected to the image management unit 200 and the network. Irradiation angle can be freely adjusted up and down and left and right to fit, and the security light control unit 140 can operate the flashing relay 143 to control the blinking of the LED security light 145, and also the GPS receiver 147 In conjunction with the), the LED security light 145 may be switched on and off automatically.

That is, the GPS receiver 147 automatically calculates the sunrise and sunset time by comparing the GPS standard information (latitude, longitude, time) received from the GPS satellite through the GPS antenna with the sunrise and sunset time for each registered date. A signal for turning on or off the rear LED security light 145 is transmitted.

In this case, the GPS receiver 147 is connected to the local controller 110 so that the GPS receiver 147 can accurately check the acquisition time of the image captured by the camera 120.

2 and 3, the vertical angle adjusting unit 141 may include a first motor 141a that provides a rotational driving force under the control of the security lamp controller 140, and a rotation shaft of the first motor 141a. It is mounted on the first worm 141b and the LED security light 145 coupled to each other, and consists of a first worm wheel 141c that rotates by being engaged with the first worm 141b, and the LED security light 145 is disc-shaped, respectively. It is connected to the security light block 144 of the hinge is rotatable in the vertical direction, the first worm wheel 141c on the hinge shaft 145a of the hinge connection portion is fixed to rotate together.

Therefore, when the first electric motor 141a is driven to rotate under the control of the security controller 140, the rotational force of the first worm 141b fixed to the rotary shaft is transmitted to the first worm wheel 141c. Due to the hinge shaft 145a which rotates simultaneously with the one worm wheel 141c, the LED security light 145 rotates in the vertical direction with respect to the security light block 144.

And the left and right angle control unit 142 is a second electric motor 142a for providing a rotational driving force under the control of the security light control unit 140, and the second worm 142b coupled to the rotation shaft of the second motor 142a. And a second worm wheel 142c mounted on the central axis of the security light block 144 on which the LED security light 145 is installed and engaged with the second worm 142b to rotate.

Here, the upper and lower angle control unit 141 and the left and right angle control unit 142 is illustrated as operating by the electric motor and the worm gear driving method, but not limited to this, the motor and the rack pinion driving method, the actuator and the like to fit the monitoring environment And the irradiation angle can be easily adjusted from side to side, as well as, for example, the servo motor, step motor, etc. that can match the exact rotation position and speed according to the control command of the control unit, such as security.

On the other hand, the camera 120 controls the motor remotely to adjust the pan, tilt angle, zoom, and focus of the camera lens from 800,000 pixels to 2 million pixels. Pixel-level speed dome camera can be adopted, and the high-brightness LED light 170 is installed in the dome case of the transparent camera to block the incoming light from outside and minimize the color rendering and backlight phenomenon while providing a clearer and better image for the subject. Can be obtained.

In addition, the information acquisition unit 100 may be provided with a photovoltaic device and a wind power generator to be supplied with power using solar light and wind power.

The image management unit 200 receives the real-time image server 210 for storing the surveillance video collected by the camera 120 in real time and digital image information stored in the secondary memory 150 of the information acquisition unit when the network is disconnected or unstable. It includes a recording video server 220 for storing and an image display unit 240 for monitoring the surveillance video.

In addition, the image management unit 200 controls the storage of the digital image information in the auxiliary memory 150 of the information acquisition unit 100 when the network operation state is unstable based on SNMP, and then the operation state of the network is stable If so, the digital image information stored in the secondary memory 150 of the information acquisition unit 100 is configured to include an integrated video management control unit 230 for controlling to transmit and store to a separate recording video server 220.

That is, the real-time image server 210 automatically receives the surveillance video taken by the camera 120 in real time when the network connection state between the information acquisition unit 100 and the image management unit 200 operates normally, and in real time. Automatic recording and recording video server 220 is provided separately from the real-time video server 210 when the network connection is unstable when the digital video signal temporarily stored in the secondary memory 150 of the information acquisition unit is automatically received when the network recovery The video display unit 240 restores the digital video signal transmitted through the network to the original surveillance video signal, the camera control signal, and the audio signal through the monitoring operating system, and displays the real-time signal to the administrator in real time. In the case of employing, each video signal transmitted from multiple cameras can be displayed simultaneously.

Here, the integrated video management controller 230 is a network state, the camera 120 state of the information acquisition unit, a real-time video server 210, a recording video server 220, an image display unit 240 for monitoring the surveillance video, LED security, etc. 145 and overall management and control of all systems, including flashing lights.

In addition, the integrated image management control unit 230 periodically sends an SNMP packet to the network interface 180 between the image management unit 100 and the information acquisition unit 200 and returns the network to the packet state returned through the network interface 180. It checks and manages the status of the network and informs the network administrator immediately when the network is disconnected or in an unstable state where a certain level of network bandwidth is not supplied reliably, and at the same time, the information acquisition unit which is always linked based on a preset manual is provided. The memory 150 controls to temporarily store the image photographed by the camera 120 until the network is stabilized.

That is, when smooth image transmission between the information acquisition unit 100 and the image management unit 200 is not possible due to network instability, a separate unit provided in the information acquisition unit 100 is provided based on a manual set in advance in the integrated image management control unit 230. In the auxiliary memory 150, the video stored by the camera 120 is separately stored until the network is reduced from the unstable state to the normal state, and the separately stored video is recorded and reconstructed after the network state is reduced and stabilized. Will be automatically sent to the server.

Such an image transmission apparatus according to an embodiment of the present invention can be implemented as a system using a speed dome network camera. That is, after converting the video information taken by the camera to digital data, it is compressed according to the video compression standard and stored in the hard disk of the real-time video server 210 or the recording video server 220 of the central control center, recording and There is no change in image quality during reproduction, and management of the storage medium is easy.

4 is a flowchart illustrating an image transmission process of an image transmission apparatus according to an exemplary embodiment of the present invention.

Referring to FIG. 4, the integrated video management controller 230 periodically sends an SNMP packet to the network interface 180 and checks the state of the network with a packet state returned through the network interface 180 (S101). That is, by comparing the response rate of the SNMP packet with the number of times it is determined whether the network connection state operates stably without a problem (S103). At this time, when the response rate of the SNMP packet is 50% or more, to send the image stored in the image memory 130 and the secondary memory 150 to the local control unit 110 while periodically sending SNMP packets to the network interface 180. Immediately proceeds to the step (S109).

The received image is compared with the captured time and the current time to determine whether the image is transmitted in real time (S111, S113). In this case, when the image is transmitted in real time, it is stored in the real-time video server 210 (S115), and in the case of not the real-time video is controlled to be stored in the recorded video server 220 (S117).

When the response rate of the SNMP packet is 50% or less, the integrated image management controller 230 transmits a control signal to the local controller 110 to store the image captured by the camera 120 in the auxiliary memory 150 (S105). ).

Thereafter, the response rate of the SNMP packet periodically sent by the integrated video management controller 230 is compared with the number of times of transmission to determine the network connection state (S107). At this time, if the response rate of the SNMP packet is less than 100%, the secondary memory to continuously store the control signal by continuously transmitting a control signal to the local control unit 110 to store the image taken by the camera 120 in the secondary memory 150 Will remain in the state.

When the response rate of the SNMP packet is 100%, the integrated video management controller 230 transmits a control signal for transmitting the image stored in the video memory 130 and the auxiliary memory 150 to the local controller 110 (S109). ).

The received image is compared with the captured time and the current time to determine whether the image is transmitted in real time (S111, S113). In this case, when the image is transmitted in real time, it is stored in the real-time video server 210 (S115), and in the case of not the real-time video is controlled to be stored in the recorded video server 220 (S117).

Meanwhile, the information acquisition unit 100 analyzes the image of the subject photographed by the camera 120 to identify and classify objects and colors into people and objects, calculates movements and quantities, and stores them temporarily. The integrated video management controller 230 may further include an intelligent video analyzer configured to set the shape and color, movement, quantity, and attention of people and objects in a prescribed condition so as to compare and analyze the data stored in the image analysis chip. Can be configured.

That is, the information acquisition unit 100 converts the image acquired by the camera 120 into digital image information, compresses and stores it as an image file, and analyzes the pattern of the stored image in an image analysis chip that identifies and classifies an object. After analyzing based on the mounted image algorithm, the analyzed image analysis value and the corresponding image are simultaneously transmitted to the integrated image management controller 230.

The integrated image management controller 230 is equipped with a standardized database and image analysis procedure manual for various types of comparative analysis such as movement of a person / thing for image analysis, quantity calculation of a person / thing and face of a suspect, wanted or wanted person. By using this, the image analyzing chip recognizes and analyzes the image captured by the camera and automatically sends the image analysis value based on the image and the image analysis procedure manual to the manager through the integrated image management controller 230. In this case, the administrator or security personnel can take appropriate action and take action according to the situation when the preset rule condition is met by using the image and the image analysis value.

In addition, the integrated image management controller 230 manages and controls the intelligent image analysis unit, and standardized database data for the comparative analysis stored in the image analysis unit (type of person / thing for image analysis, person / thing of Color, movement of people / things, quantity of people / things, detection of surrounding colors and faces of suspects or important persons) and video analysis procedures manuals to the camera's video analysis chip to suit the field situation at the monitoring site. In addition, the transmitted data values are stored in the image analysis chip of the camera, and the intelligent data analysis is executed by using them, and the image and analyzed image analysis values are provided to the administrator.

Therefore, the integrated image management controller 230 analyzes the images according to emergencies such as fires or emergence of emergency or emergencies and automatically informs the managers to deal with various situations or accidents in the monitoring area more quickly. To help.

On the other hand, the present invention is not limited by the above-described embodiment and the accompanying drawings, and can be changed to other embodiments equivalent to substitutions and equivalents within the scope without departing from the spirit of the present invention is common in the art It will be apparent to those who have knowledge.

100: information acquisition department
110: local control unit
120: camera
130: image memory
140: security light control unit
150: auxiliary memory
180: network interface
200: video management unit
210: real time video server
220: recording video server
230: integrated video management control
240: image display unit

Claims (6)

An information acquisition unit for converting, compressing, and storing analog image information input from a camera photographing the surrounding area of the surveillance area into digital image information;
Connected to the information acquisition unit through a network to display and store the digital image information in real time to monitor and include an image management unit for controlling the operation,
The information acquisition unit, a secondary memory for receiving and storing digital image information from the point of failure when the network failure occurs, LED security lights provided on the top of the camera radially, and connected to the image management unit through the network And a security light control unit for controlling the irradiation angle of the LED security light and controlling the blinking, and a vertical angle adjusting unit for rotating the LED security light in the vertical direction by the control of the security light control unit.
The video management unit controls the storage of the digital video information in the auxiliary memory when the network operation is unstable based on SNMP, and then separates the digital video information stored in the auxiliary memory when the network operation is stable. Integrated video management control unit for controlling the transmission to the recording video server of the storage;
Image transmission device further comprising.
delete According to claim 1, wherein the vertical angle adjustment unit,
A first electric motor for providing a rotational driving force under the control of the security lamp controller;
A first worm coupled to the rotating shaft of the first motor; And
A first worm wheel mounted on the LED security light and engaged with the first worm to rotate;
Image transmission device consisting of.
The method of claim 1, wherein the information acquisition unit,
Right and left angle control unit for rotating the LED security light in the left and right direction by the control of the security light control unit;
Image transmission device further comprising.
According to claim 4, wherein the left and right angle control unit,
A second motor for providing a rotational driving force under the control of the security lamp controller;
A second worm coupled to the rotation shaft of the second electric motor; And
A second worm wheel mounted on a central axis of the security light block in which the LED security light is installed and engaged with the second worm to rotate;
Image transmission device consisting of.
The method according to claim 1, 3 to 5, wherein the information acquisition unit,
Video transmission device with high brightness LED lighting around the camera.

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