KR101651877B1 - Integrated multi-directional and automatic monitoring camera and multi-purpose automatic monitoring system using the same - Google Patents

Abstract

The present invention relates to an integrated multi-directional unattended surveillance camera in which a main camera, a plurality of auxiliary cameras, and other additional equipment are integrally formed, and a multipurpose unmanned surveillance system using the same, wherein the main camera comprises a rotatable camera , The mount for fastening the rotating camera has a universal mounting structure that can employ all the rotating type cameras regardless of the manufacturer so that the integrated operation of the rotating type camera is possible and the auxiliary cameras are attached by the rail type, And a main body having the main camera and the auxiliary camera installed thereon. The main body has an upper case and a lower case, which are vertically opened or pierced, The upper case has a plurality of An auxiliary camera is installed, and a plurality of infrared LEDs for illumination are installed on the circumferential end of the lower case in a rail manner.

Description

TECHNICAL FIELD [0001] The present invention relates to an integrated multi-directional unmanned video surveillance camera and a multipurpose unmanned video surveillance system using the same.

The present invention relates to an unmanned surveillance camera, and more particularly to an integrated unidirectional unmanned surveillance camera in which one main camera, a plurality of auxiliary cameras, and additional devices such as an IR LED, a switch hub, an SMPS, Multi-purpose unmanned monitoring system.

As is known, closed circuit television (CCTV) connects a transmission / reception of a picture by wire or wireless, and it is called a closed circuit television because it can not arbitrarily receive the reception object other than the reception object.

Such CCTVs are widely used for industrial, educational, medical, traffic control surveillance, disaster prevention, and in-house image information transmission applications other than broadcasting television. In recent years, particularly, The installation of CCTV in the same danger zone is increasing to prevent crime. The rapid increase in the number of CCTV installations has been substantiated by the prevention and suppression of crime in CCTV, the ease of arresting criminals and the arrest of criminals, the reduction of fear of citizens, and the complementary effect of limited police and crime prevention personnel Because.

In some cases, CCTV can infringe publicity rights of ordinary citizens and seriously expose privacy, and individual citizens can be imprisoned as potential criminals. However, in spite of these problems, CCTV system is used as a means of identifying the causes of civil complaints, enforcing traffic guidance, preventing crime, and detecting the route of criminals, thereby reducing the incidence of crime or civil complaints. Installation is on the rise.

In recent years, a number of cameras have been installed in accordance with the purpose and object of the surveillance, and various systems such as a life crime prevention system, an automatic object tracking system, an unmanned crime prevention system, an illegal parking control system, an unmanned signal / speed control system, Examples of the constitution of the CCTV system (for example, patent publication No. 2009-92901 and patent registration No. 822426) are increasing.

However, equipment such as field surveillance CCTV requires a separate enclosure to install CCTV optical communication and modem devices, industrial switch hub devices, and power supply devices (SMPS), which results in high installation cost and space, There is a drawback that it is inconvenient.

SUMMARY OF THE INVENTION The present invention has been developed in order to solve the above-mentioned problems, and it is an object of the present invention to provide an integrated multi-directional unmanned video surveillance camera which achieves a simplified configuration of a CCTV installation by integrally configuring a single main camera, a plurality of auxiliary cameras, And a multipurpose unmanned monitoring system using the same.

According to the present invention, a plurality of auxiliary cameras are arranged in a circumferential direction of the main camera so as to monitor a rectangular area of one main camera and the main camera, And a multi-CCTV camera equipped with a function of up / down / left / right / zoom (PTZ), and the auxiliary cameras are composed of a stationary camera of a rail movement system capable of operating a direction in up and down and left and right directions, A main body in which one main camera, the plurality of auxiliary cameras are mounted, an optical communication device for CCTV, a modem device, an industrial switch hub device, a power supply device, and other related equipment are integrated into the product to integrate the device, And the main body is a rotary type main body, And a plurality of infrared LEDs for illumination are provided on a surface of the main body so as to provide infrared illumination in a direction in which the plurality of auxiliary cameras and the auxiliary cameras are viewed, Way multi-directional surveillance camera installed in correspondence with a rail moving manner so as to be able to be operated in a direction of a vehicle.

According to the present invention, the main body is formed by vertically engaging the upper case and the lower case, and a flat flange having a constant width is provided around the interface between the upper case and the lower case, And the auxiliary camera and the infrared LED for illumination are mounted on the upper case and the lower case so as to be movable along the rails, and the auxiliary camera is mounted on the upper surface of the flange surface Wherein the infrared LEDs for illumination are arranged on the rail at the bottom of the flange at regular intervals along the circumference of the lower case corresponding to the orientation angles of the respective auxiliary cameras, And is coupled with a bolt fastening method, And has at least one opening window on the side of the top plate member for convenience of replacing or troubleshooting a CCTV optical communication device, a modem device, an industrial switch hub device, a power supply device, And is opened / closed by a cover provided.

The main body includes a plurality of fixing holes for fastening and fixing the upper end of the main camera on the upper surface of the upper case. The upper end of the main camera is coupled to the main camera through screw holes, The fixing holes may be formed by a large diameter portion for insertion of the protrusions and a small diameter portion for engaging the protrusions so that the fixing protrusions can be locked and fixed, Type camera can be employed to integrally operate the rotating type camera, and the combined structure of the main body and the top plate member is configured to protect the respective constituent members from the external environment The cover member is covered with a cover member made of a transparent material, An upper cover coupled to an upper surface of the top plate member to serve as a sun shade, an intermediate cover coupled to the upper case to protect the auxiliary camera, Wherein the upper cover is fixed to the upper surface of the top plate member by a screw fastening method and the intermediate cover is fastened to the flange of the main body in a fitting rotation manner, Wherein the lower cover is fixed to the lower case by a screw fastening method through a plurality of screw holes provided in the end and a plurality of fastening grooves formed along the circumferential surface of the lower case, And a supporting portion, and at a position spaced apart from the supporting portion by a predetermined height, The protrusions protruding at regular intervals along the inner circumferential surface are formed so that the locking protrusions are engaged with the bent ends of the flange so that the intermediate cover can be fastened and fixed to the flange of the main body.

In addition, the present invention provides a multipurpose unmanned monitoring system using the integrated multi-directional unmanned surveillance camera having the above-described configuration, and it is an object of the present invention to provide a multipurpose unmanned surveillance system using an integrated multi- · Multi-CCTV camera, which is a swivel type camera with built-in up / down / left / right / zoom (PTZ) function and integrated in a single system covering overspeed interception system and parking management system as basic elements, An emergency bell and a warning lamp for informing the emergency or dangerous situation of the scene to the control center and the outside, and a loop coil / laser for speed violation and signal violation interruption of the vehicle, The camera includes a CCD / CMOS imaging device; An image sensor device for binarizing an image image picked up by a lens of a camera; A main command processing device that selectively or comprehensively executes algorithms of a monitoring scenario, a monitoring target, a monitoring situation, and an operating scenario based on scheduling, and a compression / object recognition module that performs compression and object recognition of the data- Wherein the main image processing apparatus includes a video receiving unit, a subject recognition processing unit, and a codec unit configured by a video codec, an audio codec, and an image codec, And an algorithm processing unit for processing the transmitted object data recognition information, and the algorithm processing unit executes an illegal parking distance algorithm, a life crime algorithm, an unmanned crime prevention algorithm, an intelligent object tracking algorithm, a parking management algorithm, and an unmanned signal / .

According to the present invention, the integrated multi-directional unattended surveillance camera of the present invention having the above-described configuration has a main camera of a rotation type and a fixed auxiliary camera of 6, , CCTV optical communication and modem devices, and industrial switch hub devices can be embedded in the product, which can simplify the installation configuration compared to the existing CCTV. In addition, the present invention opens the side cover of the top plate member without disassembling the whole product, and can replace or repair the internal PCB, SMPS, HUB, optical communication modem, etc., thereby facilitating maintenance.

1 is an external perspective view of an integrated multi-directional unattended surveillance camera of the present invention,
FIG. 2 is an exploded perspective view of the integrated multi-directional unattended surveillance camera according to FIG. 1,
3 is a partially enlarged perspective view of the main body structure shown in Fig. 2,
FIG. 4 is a partially enlarged perspective view of the top plate member configuration shown in FIG. 2,
Fig. 5 is a partially enlarged perspective view of the cover member and the hanger structure shown in Fig. 2,
FIG. 6 is a perspective view showing a combined state of the partial structure of FIG. 2,
FIG. 7 is a plan view showing a main camera combined state according to FIG. 6,
FIG. 8 is a front perspective view showing a combined state of the partial configuration of FIG. 2,
Fig. 9 is a bottom perspective view showing a combined state of some components according to Fig. 8,
10 is an assembled sectional view of an integrated multi-directional unattended surveillance camera according to the present invention.
FIG. 11 is a conceptual diagram illustrating the configuration of a multipurpose unattended monitoring system using the integrated multi-directional unattended surveillance camera according to FIGS. 1 to 10. FIG.
FIG. 12 is a diagram showing a configuration of a multi-CCTV camera which is a basic element of the multipurpose unattended monitoring system of FIG.
FIG. 13 is a diagram illustrating a method for obtaining a site view angle of a fixed camera when the view angle of a fixed CCTV camera and a fixed CCTV camera do not coincide with each other in the multipurpose unmanned monitoring system of FIG.
FIG. 14 is a flowchart illustrating a process in which a corresponding algorithm is selected according to a user request or a scenario according to a situation of a remote control center in the multipurpose unmanned monitoring system of FIG. 11, and each process in which the selected algorithms are executed.
FIG. 15 is a flowchart showing a process in which a warning lamp operates through a program module from an emergency bell signal in accordance with the life security algorithm of FIG. 14;
16 is a diagram showing the configuration and operation of the system recovery device in the multipurpose unattended monitoring system of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a first embodiment of the present invention; Fig.

The embodiments described below are omitted from illustration and description except for essential parts in describing the present invention. Throughout the specification, the same reference numerals are given to the same or similar components, and a detailed description thereof will be omitted.

[ Example  One]

FIGS. 1 to 9 are views showing an external configuration of the integrated multi-directional camera according to the present invention and a coupling relationship between the respective components, and FIG. 10 is a sectional view showing an assembled state of the integrated multi-directional camera according to the present invention.

According to the present invention, an integrated multi-directional unattended surveillance camera in which one main camera 400 and a plurality of auxiliary cameras 110 are integrated is presented. This integrated multi-directional unmanned surveillance camera integrates and integrates CCTV optical communication equipment, modem equipment, industrial switch hub equipment, power supply equipment (SMPS; 240, 250) and other related equipment inside the product, Resulting in simplification of CCTV installation configuration. In the present invention, the main camera 400 may be composed of a multi-CCTV camera (for example, IR PTZ CAMERA) which is rotatable 360 degrees by an electrical signal and has an up / down / left / right / . In addition, the plurality of auxiliary cameras 110 may be composed of a fixed camera capable of changing the position along the periphery of the main camera 400 and capable of manipulating the directions in the vertical and horizontal directions.

The integrated multi-directional unattended surveillance camera of the present invention includes a main body 100 on which a main camera 400 and a plurality of auxiliary cameras 110 are mounted, a tower 100 that accommodates various communication and control means to be installed in a conventional on- And a plate member (200).

The main body 100 may be provided with a hollow structure with its bottom opened to allow the base portion 420 of the main camera 400 to be inserted therein. And an infrared LED 120 for illumination that provides infrared illumination in a direction viewed by these auxiliary cameras, respectively.

The main body 100 may be configured as an upper and lower coupling type of the upper case 101 and the lower case 102 for installing the plurality of auxiliary cameras 110 and the plurality of infrared LEDs 120 for illumination, 110 and the illumination infrared LED 120 are preferably arranged such that at least one or more infrared LEDs 120 for illumination are arranged corresponding to one auxiliary camera 110.

According to one exemplary embodiment of the drawings, a flat flange 101a having a predetermined width is provided around the interface between the upper case 10 and the lower case 102, and rails (not shown) The auxiliary camera 110 and the infrared LED 120 for illumination are mounted on the upper case 101 and the lower case 102 so as to be movable along the rails. For example, the auxiliary camera 110 is installed on the upper case 101 and the infrared LED 120 for illumination is installed on the lower case 102, and the infrared LED 120 for illumination is installed on the lower case 102 according to the monitoring position and angle of the auxiliary camera 110 120 may be adjusted and used.

Six or more fixed cameras may be mounted on the auxiliary camera 110, such as variable and short focal length cameras. The auxiliary camera 110 may be mounted on the upper surface of the flange 101a at regular intervals along the periphery of the upper case 101 (Not shown). The infrared LEDs 120 for illumination are arranged on the rails (not shown) on the bottom surface of the flange 101a at regular intervals along the circumference of the lower case 102 corresponding to the directing angles of the respective auxiliary cameras 110. [

The auxiliary camera 110 and the infrared LED 120 for illumination are combined so as to be capable of adjusting the angle of up and down turning by respective holders 112 and 122 and each of the holders 112 and 122 is connected to the flange 101a by means of variable trolleys 113, 123 which are movably and laterally rotatably fastened or fixed along the rails formed on the upper and lower surfaces of the rails 101a, 101b 3a). The variable trolleys 113 and 123 are arranged in such a manner that at least one of the variable trolleys 113 and 123 has the height of the auxiliary camera 110 and the infrared LED 120 fixed to the holders 112 and 122, (113a, 113b, 123a) having a predetermined height difference so as to be able to adjust the height of the wafer.

The top plate member 200 is mounted on the upper portion of the main body 100 in correspondence with the main camera 400 inserted and mounted from the lower opening portion of the main body 100 and has a space portion having a predetermined height, A CCTV optical communication device, a modem device, an industrial switch hub device, a power supply device (240, 250), and other related devices installed in the housing of the device.

The upper case 101 of the main body 100 has a plurality of bolting posts 104 passing through the height of the top plate member 200 to fix the top plate member 200 on the upper surface thereof, A plurality of through holes 273 through which the bolting post 104 passes are formed on the top surface 270 and the bottom surface 260 forming the space portion. The through holes 273, The top plate member 200 can be fixed to the upper surface of the main body 100 by fastening a bolt to the upper end of the column 104.

In addition, the top plate member 200 may be mounted on a top plate (not shown) for the convenience of replacing or repairing a CCTV optical communication device, a modem device, an industrial switch hub device, a power supply device 240, Each of the open windows 210 and 220 may be opened or closed by a cover 230 detachably provided. In this case, the lid 230 and the open windows 210, 220 may have one or more screw holes 231, 232 (211, 212) for mutual engagement.

A plurality of fixing holes 105 for fastening and fixing the upper end of the main camera 400 are formed on the upper surface 103 of the main body upper case 101. In the case of a structure having a plurality of fixing protrusions 401 at the upper end of the main camera 400, a screw fastening method may be applied to the upper end of the main camera 400 through the fixing holes 105, The fixing holes 105 may include a large diameter portion 105a for insertion of the protrusions and a small diameter portion 105b for fastening the protrusions so that the fixing protrusions 401 can be locked and fixed. With this configuration, the integrated multi-directional unattended surveillance camera of the present invention has a universal mount structure capable of employing all types of rotatable cameras irrespective of the manufacturer, thereby enabling integrated operation of the rotatable camera.

The coupling structure of the main body 100 and the top plate member 200 can be covered with the generally transparent cover member 300 to protect the respective constituent members from the external environment.

The cover member 300 includes an upper cover 310 coupled to an upper surface of the top plate member 200 and serving as a sunshade or the like, A middle cover 320, and a lower cover 330 surrounding the periphery of the lower case 102 to protect the infrared LED 120.

The upper cover 310 can be fixed to the upper surface of the top plate member 200 in the manner of screw fastening 312 and 272 and the intermediate cover 320 can be fastened to the flange of the main body 100 in the fitting rotation manner 107 and 323. [ And the lower cover 330 has a plurality of screw holes 331 provided at its inner peripheral edge and a plurality of coupling grooves 102a formed along the peripheral surface of the lower case 102, And can be fixed to the case 102. The middle cover 320 has a support portion 322 which is in surface contact with the flange end portion 107 of the main body at an inner lower end thereof and which is provided at a position spaced apart from the support portion by a predetermined height, The protrusions 323 are protruded at regular intervals along the inner circumferential surface of the flange of the main body 100 so that the protrusions are rotatably engaged with the flange ends 106 of the flanges so that the intermediate cover 320 can be fastened and fixed to the flanges of the main body 100 have.

The integrated multi-directional unattended surveillance camera of the present invention has a mounting member 500 (see FIG. 5) which can be hung on a ceiling or a column of a building and has a pole (hanger) 510 as a main body, The lower end of the top plate member 200 is bolted to the upper end of the top plate member 200 to be integrally coupled.

The integrated multi-directional unattended surveillance camera of the present invention having the above-described configuration can be 360-degree surveillance and image display by configuring an integrated main camera and a fixed auxiliary camera as six integrated cameras. In addition, the integrated multi-directional unattended surveillance camera of the present invention can incorporate optical communication and modem devices for CCTV, industrial switch hub devices, and the like into the product, thereby simplifying the installation configuration such as eliminating the need for a field enclosure. It is possible to reduce the maintenance cost and prevent the appearance of the city. Furthermore, the present invention can easily replace the internal PCB, SMPS, HUB, optical communication modem and other related equipment by opening only the side cover of the top plate member without disassembling the entire product, thereby facilitating maintenance. In addition, the A / S of the auxiliary camera and the infrared LED can be repaired and replaced only by removing the middle cover or the lower cover in a suspended state without separating the entire product from the pole.

The integrated multi-directional unattended surveillance camera of the present invention can incorporate a power supply device inside the product, so that the AC 220V power supply can be directly applied to the camera. Therefore, it is not necessary to provide a separate housing for installing the surveillance camera, thereby simplifying the installation structure and reducing the installation cost. In addition, the integrated multi-directional unattended surveillance camera of the present invention is compatible for mounting a third party product in a rotary IR PTZ camera, and the upper case of the main body can be modified into a proper fastening structure for the main camera.

INDUSTRIAL APPLICABILITY The integrated multi-directional unattended surveillance camera of the present invention has a plurality of infrared LEDs arranged at regular intervals along the circumferential direction of the main body, thereby ensuring a visible distance of at least 100 meters at 360 degrees in the night. In addition, the integrated multi-directional unmanned security camera of the present invention can perform functions such as life crime prevention and object recognition, that is, object classification, tracking, walks, people count, intrusion monitoring, fire monitoring, In addition, it is possible to carry out functions of illegal parking system, such as identification and billing of parking tickets, issuing billing, road crime prevention function, vehicle number recognition during running, and life crime prevention functions such as school zone, park, have.

[ Example  2]

FIG. 11 illustrates a configuration of a multipurpose unattended monitoring system including the integrated multi-directional unattended surveillance camera according to the first embodiment described above, and a connection relationship between the control center server and the multi-purpose unmanned monitoring system 700 Is installed and installed in addition to the multi-CCTV camera 400 (here, the reference numeral 710 is given here), which is the main camera of the integrated multi-directional unmanned security camera, and the fixed camera 110 (here, An emergency bell 730 and a warning light 740 for notifying the control center and the outside of the emergency or dangerous situation on the spot according to the purpose of use, and a loop coil / laser 750 for speed violation and signal violation interruption of the vehicle .

The center server 800 that operates in conjunction with the multipurpose unmanned monitoring system 700 of the present invention includes a CCTV integrated S / W 810, a database 820 and a data storage unit 830, (840) and a communication connection device (850). Here, the CCTV integrated S / W (810) includes a life security S / W driving a life crime prevention system, a crime prevention software S / W driving an uninhabited crime prevention system, / W, an unmanned signal that drives an unmanned signal / overspeed control system, overspeed interrupter S / W, and a parking management software that drives a parking management system. In addition, the CCTV integrated S / W 810 may further include an intelligent object tracking S / W for driving an intelligent object tracking system.

12 shows a configuration of a multi-CCTV camera as a main camera of an integrated multi-directional unattended surveillance camera, which is a basic element of the multipurpose unattended surveillance system according to FIG. 11, including a CCD / CMOS imaging device 711; An image sensor device 712 for binarizing the image image picked up by the lens of the camera; A General Purpose Input / Output (GPIO) device 713 for transmitting the current situation according to the emergency bell operation to the control center and making the operation of the beacon according to the emergency bell operation continuous for the time set by the user; A system recovery device 714 for automatically monitoring the status of the network equipment in the field and recovering the equipment when a failure occurs; A control mechanism device 715 for transmitting and receiving the absolute coordinate values of the up / down / left / right control of the multi-CCTV camera and the camera position; Algorithms of operating scenarios according to the purpose of monitoring, target of surveillance, monitoring situation and scheduling using multi-CCTV camera 710, namely illegal state and stopping algorithm, life crime prevention algorithm, unmanned crime prevention algorithm, intelligent object tracking algorithm , A parking management algorithm, an unmanned signal / overspeed interruption algorithm, and the like selectively or in combination; And a main image processing apparatus 717 for performing compression and object recognition of the data image image transmitted from the image sensor apparatus 712.

The CCD / CMOS imaging device 711 generates and stores an optical signal by capturing an object, and transmits the optical signal. The image sensor device 712 converts light into electrical charge to generate an image (image) The color and image quality distorted by the external environment of the image photographed by the device 711 is corrected in a state optimized by the image sensor device 712 and the image of the main image processing device 717 And is transmitted to the receiving unit 717a.

The main image processing apparatus 717 includes an image receiving unit 717a, a object recognition processing unit 717b and a codec unit (a video codec 717c, an audio codec 717d and an image codec 717e) Stores the received image in an image dedicated queue before transmitting it to the object recognition processing unit 717b to give independence of the object recognition and processing by the object recognition processing unit 717b and also to the codec units 717c and 717d, 717e. The received image is converted into a digital signal, compressed and transmitted to the user of the remote control center, that is, the remote control center through the video processing unit 719c in the main command processing unit 716 in real time.

On the other hand, the object recognition processing unit 717b requests and confirms the data stored in the video dedicated queue, extracts and recognizes the object data when the received data exists, and recognizes the object data, Lt; / RTI > The algorithm processing unit 718 is composed of an illegality parking time algorithm, a life crime prevention algorithm, an unmanned crime prevention algorithm, an intelligent object tracking algorithm, a parking management algorithm, an unmanned signal / overspeed interception algorithm, And is selectively driven based on the object recognition information to be transmitted.

The main command processing unit 716 includes a fixed camera object recognition processing unit 716i receiving the object recognition information of the fixed camera 720 installed for the purpose of minimizing a rectangular area and monitoring another area direction, Thereby enhancing the efficiency of monitoring through interlocking with the CCTV camera 710. The image captured by the fixed camera 720 is recognized as object data by the fixed camera object recognition processing unit 716i and the recognition information of the object data is transmitted to the algorithm processing unit 718 in the main command processing apparatus 716 .

The main command processing unit 716 further includes a control mechanism unit 715 and a camera control unit 716d interlocked with the image receiving unit 717a in the main image processing unit 717. [ When the image captured by the rotary type multi-CCTV camera 710 is transmitted to the camera control unit 716d through the image processing unit 717a and the object recognition processing unit 717b and the object recognition information through the algorithm processing unit 718, The controller 716d transmits and receives the camera absolute position value to the image receiving unit 717a and transmits the camera position result value to the control mechanism device 715 so that the rotation angle of the multi-CCTV camera 710 can be changed.

The main command processing unit 716 also includes a user received data analysis unit 716g and an algorithm selection unit 716h. The user received data analysis unit 716g analyzes and processes the command requested by the user of the control center. The user received data analysis unit 716g transmits the user command according to the operation scenario to the algorithm selection unit 716h, Parking control algorithm / unmanned signal / overspeed interception algorithm) to be implemented. The processed result values of the algorithm processing unit 718 are transmitted to the users of the control sensor, such as illegal constant-distance algorithm / life security algorithm / unmanned security algorithm / intelligent object tracking algorithm / parking management algorithm / unmanned signal / overspeed interception algorithm , Network (C / S) (Client & Server, network programming method to enable monitoring and transmission of on-scene video and data to users from remote locations) , It is necessary to reduce the size of the information such as object recognition information, interception information, and car number information to less than 100 bytes so as to be able to cope actively in various environments such as a user having a low bandwidth (transmission of a moving image having a large data capacity is difficult) A meta data processing unit 719a for transmitting the text data of < RTI ID = 0.0 > The image processing unit 719b for transmitting the image data at the time of generation of the event stored in the JPEG compression format capable of being compressed and the moving image processing unit 719c for transmitting the compressed image and audio data to the real- do.

The fixed camera object recognition processor 716i receives the object recognition information of the fixed camera 720 in real time and transmits the object recognition information to the camera controller 716d according to the priority order to operate the control mechanism device 715, The surveillance area can be monitored using the up / down / left / right / zoom functions of the multi-CCTV camera 710.

In this case, in order for the multi-CCTV camera 710 receiving the object recognition information of the fixed camera 720 to track the object, the view angles of the rotary multi-CCTV camera 710 and the fixed camera 720 are different from each other To this end, the multi-CCTV camera 710 is moved in the view angle direction of the fixed camera 720.

At this time, the pan value (the absolute position value of the center point of the camera) of the fixed camera 720, the tilt value (the absolute position value of the camera center point in the vertical direction) and the zoom value 710) to the view angle of the fixed camera (720).

However, depending on the type of the fixed camera 720, the view of the fixed camera 720 may be different depending on the lens type (typically, 1/2, 1/3, 1/4, or 2/3 inch products are mainly used in CCTV) It is preferable to separately obtain the sight view angle of the fixed camera 720 when the angles of view of the multi CCTV cameras 710 do not coincide with each other.

11 and 12, only the multi-CCTV camera 710 has an up / down / left / right / zoom function, and the fixed camera 720 has a configuration having no up / down / left / right / The present invention is not limited to this, and it goes without saying that the fixed camera may be configured to be capable of the up / down / left / right control functions according to need.

FIG. 13 illustrates a method of obtaining a site view angle of a fixed camera when the view angle of a fixed multi-CCTV camera and a stationary fixed camera do not match in the multipurpose unattended surveillance system of the present invention. In FIG. 7A, The X1 and X2 points are symmetrically located on the left and right sides and the Y1 and Y2 points are symmetrically located on the upper and lower sides of the center. From here, the multi-CCTV camera is moved to obtain the site view angle with respect to the width by shifting the absolute position value of the x1 point in the fixed camera image of FIG. 7A to the position of x2 as shown in FIG. 7B, The tilt absolute position value of the Y1 point in the fixed camera image of 7a is moved to the y2 point position as shown in FIG. 7C to obtain the site view angle with respect to the height.

Also, the object position information of the fixed camera image is used for object tracking by obtaining the camera pan / tilt absolute position value on the control mechanism device. In this case, the maximum width of the fixed camera image: The center position point of each view of the fixed camera is calculated and tracked through the equation of "object position information: center position point of each fixed camera view".

The main command processing unit 716 further includes a general purpose input / output (GPIO) processing unit 716b and a network recovery unit processing unit 716c. The GPIO processing unit 716b, in cooperation with the GPIO unit 713, And manages input / output states of signals (Digital-Input) and output signals (Digital-Output). The main command processing unit 716 further includes an image mask processing unit 717b for receiving the absolute position value of the camera when the object recognition information in the object recognition processing unit 717b is extracted, And a camera absolute position transmitter / receiver 716e that periodically requests the control mechanism device 715 to store the absolute position value and the absolute position value of the camera.

14 shows a process of selecting a corresponding algorithm in the algorithm processing unit of FIG. 12 and a process in which the selected algorithms are executed. FIG. 14A shows a step in which an algorithm is selected according to a user request of a remote control center or a scenario according to a situation It is a flowchart. In Fig. 14, algorithms for implementing the functions of the illegal parking regulation system, the life crime prevention system, the unmanned crime prevention system, the intelligent object tracking system, the parking management system, or the unmanned signal / speed control system are selected.

FIG. 14B shows an algorithm execution process when an illegal main / stationary algorithm for implementing an illegal main / stop control system function is selected in the algorithm selection step. This is because the algorithm processor 718 selects an illegal main / (S-011); An intermittent zone object recognition step (S-012) for judging whether or not an object is present in the illegal parking intermittent area from the object recognition information of the object recognition processing unit 717b; if the object does not exist, return to the algorithm selection step; (S-013) when the multi-CCTV camera performs the first intermittent photographing if it is determined that an object in the intermittent area exists; Determining whether the intermittent time has elapsed (S-014); if the intermittent time has elapsed in this case, returning to the algorithm selection step; If it is determined that the intermittent time has not elapsed (S-015), the multi-CCTV camera performs the second intermittent photographing; A step (S-016) of generating a protocol for intermittent intermittent interception based on the photographed image and transmitting the generated intermittent intermittent information to a remote control center; A step (S-017) of storing parking space interruption information through the metadata processing unit; (S-018) requesting the control right.

FIG. 14C shows an algorithm execution process when a life crime algorithm for realizing a life crime prevention system function is selected in the algorithm selection step. In step S-021 in which the life crime algorithm is selected and executed in the algorithm processing unit 718 ); (S-022) in which the emergency bell signal is transmitted from the scene of the event or emergency situation. - If the emergency bell does not work in this case, return to the algorithm selection stage; (S-023) of the GPIO processing unit 716b detecting the input signal in response to the emergency bell operation in conjunction with the GPIO unit 713 and outputting the output signal to operate the beacon; (S-024) of generating a security crime information from an output signal of the GPIO processing unit 716b and transmitting the security crime information to the remote control center; Storing the life crime prevention information through the metadata processing unit (S-025); (S-026) judging whether a warning light operation time has elapsed according to an output signal of the GPIO processing unit 716b. In this case, if the warning light operation time has elapsed, (S-027) in which the warning light is operated for the set time if the warning light operation time has not elapsed.

FIG. 14D illustrates an algorithm execution process when the unmanned security algorithm is selected to implement the unmanned security system function in the algorithm selection step, wherein the algorithm processing unit 718 selects and executes the unmanned security algorithm S-031); (S-032) of determining whether or not the vehicle exists in the recognition zone from the object recognition information of the object recognition processing unit 717b. In this case, if there is no vehicle, the process returns to the algorithm selection step. (S-033) confirming the illuminance in the recognition area when it is determined that the vehicle in the recognition area exists; Operating the emitter (S-034) if the illuminance is not appropriate; A step (S-035) in which the multi-CCTV camera photographs the vehicle when the illuminance is appropriate or the illuminance becomes appropriate by the projector; (S-036) performing a protocol operation for generating crime prevention information from the photographed vehicle image and transmitting the crime prevention information to the remote control center; And storing (S-037) the crime prevention information on the uninhabited road through the metadata processing unit.

FIG. 14E illustrates an algorithm execution process when an intelligent object tracking algorithm is selected to implement the intelligent object tracking system function in the algorithm selection step. The intelligent object tracking algorithm is selected and executed in the algorithm processing unit 718 S-041); (S-042) for determining whether or not an object exists in the detection area from the object recognition information of the object recognition processing unit 717b. In this case, if it is determined that the object does not exist, (S-043) the multi-CCTV camera tracks the object if it is determined that the object exists in the detection area; (S-044) - In this case, if it is determined that the object is out of the traceable range, the process returns to the algorithm selection step. (S-045) requesting a camera absolute position value to the camera control unit 716d if it is determined that the camera absolute position is not out of the traceable range; A step (S-046) of generating a protocol object for generating intelligent object tracking information from the object image being tracked and transmitting the intelligent object tracking information to the remote control center; And storing the intelligent object tracking information through the metadata processing unit (S-047).

FIG. 14F shows an algorithm execution process when an unmanned signal / overspeed algorithm is selected to implement an unmanned signal / speed system function in the algorithm selection step. In the algorithm processing unit 718, an unmanned signal / (S-051); Speed violation check step (S-052) for judging whether or not speed violation is detected. In this case, whether speed violation is confirmed from the loop detect speed; If it is determined that the speed is violated, step (S-053) of confirming the illuminance as preparation for taking a vehicle; If it is judged that the speed is not violated, the signal violation confirmation step (S-054) for checking whether the signal is violated - In this case, whether the signal is violated is checked from the signal light information. If it is judged that the signal is not violated, (S-053) if it is determined that it is in violation of the illuminance confirmation step (S-053). Operating the emitter (S-055) if the illuminance is not appropriate; A step (S-056) in which the multi-CCTV camera photographs the vehicle when the illuminance is appropriate or the illuminance becomes appropriate by the projector; A step (S-057) of generating a unmanned signal / speed information from the photographed vehicle image and transmitting the unmanned signal / speed information to the remote control center; And storing the unmanned signal / speed information through the metadata processing unit (S-058).

FIG. 14G shows an algorithm execution process when a parking management algorithm for implementing the parking management system function is selected in the algorithm selection step. In the algorithm processing unit 718, a parking management algorithm is selected and executed (S-061 ); (S-062) In this case, whether or not the vehicle enters the vehicle is confirmed through a loop coil. If it is determined that the vehicle does not enter the detection area, Return to the selection step; A step (S-063) of confirming illuminance as a preparation for taking a vehicle if it is determined that a vehicle in the detection area has entered; (S-064) operating the floodlight if the illuminance is not appropriate; A step (S-065) in which the multi-CCTV camera photographs the vehicle when the illuminance is appropriate or the illuminance becomes appropriate by the projector; Displaying the photographed vehicle information on an image display means (LED panel or the like) (S-066); A step (S-067) of generating a parking management information from the photographed vehicle information and transmitting the generated parking management information to the remote control center; And storing the parking management information through the metadata processing unit (S-068).

15 is a diagram illustrating an execution procedure of a life crushing algorithm in which a warning light is activated by receiving an input signal DI of an emergency bell and outputting an output signal DO by a user set time in a program module.

The DI input terminal of the GPIO device 713 is connected to the emergency bell 730 and the DO output terminal of the GPIO device 713 is connected to the beacon light 740 to configure the beacon 740 to operate simultaneously with the emergency bell operation. Hereinafter, an algorithm processing process for converting the emergency bell signal continuously transmitted for a predetermined period of time into the single signal and preventing the continuous reaction of the beacon for one event will be described as follows.

First, when the emergency bell is activated (step S-110), the GPIO device 713 confirms the input signal of the emergency bell through the DI input terminal (step S-120). The time at which the emergency bell ends from the time at which the emergency bell first sounds (step S-130). It is determined whether the emergency bell operation time has passed the set time (step S-140). In the present invention, the DI input terminal is configured to use a non-voltage contact or a contact of 5 V, 12 V or less, so that the re-generated signal within 2 to 5 seconds from the initial call Are ignored and judged to be a single call. Preferably, the emergency bell signal which is re-transmitted within 5 seconds is ignored. If an emergency bell signal is generated again after 5 seconds elapse from the first time, an output signal is transmitted from the GPIO device to the warning light through the GPIO processing unit (step S-150), and the warning light is turned on for the set time period (step S-160) . Then, if it is determined that the warning light operation time is within the set time (step S-170), the GPIO device 713 controls the user received data analysis unit 716g and The interface is maintained (step S-180), and the beacon keeps operating for the changed set time (step S-0190).

FIG. 16 illustrates the configuration and operation of the system recovery device in the multipurpose unattended monitoring system of the present invention. The system recovery device 714 is provided for automatic recovery in the event of a malfunction of the network equipment in the field, and includes an unstable network connection, It can be used as a means to automatically resolve errors that can be resolved by program restart or power reset, such as system stoppage due to program error (Deak Lock or Blocking), memory and resource leaks, hardware interrupt errors do.

In general, the fault information of the network equipment in the field is mainly related to the termination of the network driver connection (hereinafter referred to as 'PING error') of the network equipment and the case where the ping is normal and the connection of the HTTP protocol on the network equipment is normal, HTTP error ') and main process stoppage (' Main Process Blocking ') caused by a program error such as Deak Lock or Blocking in the main process of network equipment.

The system recovery device 714 includes a microcomputer 714a that manages the power of the network device according to the communication state, a microcomputer that transmits a serial communication packet of a microcomputer as an Ethernet communication packet or an Ethernet communication packet as a serial A serial to Ethernet device 714b that changes communication packets to enable communication, and a power reset relay 714c that receives a signal from the microcomputer and turns on / off the power.

The serial to Ethernet device 714b can change the serial data to Ethernet data format or Ethernet data to serial data format and it is possible to use an arm based And the manufacturing cost is increased due to an increase in the S / W development cost.

The system recovery apparatus having such a configuration can operate in conjunction with a network recovery processing unit 716c and a fixed camera 720 that perform automatic recovery according to a malfunction of the network equipment in the field. Respectively.

A management target selection and packet analysis (S-210) step of selecting a management target of the network equipment (CCTV camera, hub, communication device of the communication company) by the microcomputer 714a; An ICMP checking step (S-220) for checking whether the cause of the failure of the network equipment is due to a 'ping error' using the ICMP protocol; if it is not due to a 'ping error' An alive signal checking step (S-230) for checking whether the alive signal defined between the network equipment is normal or not to check whether the cause is due to the main process blocking; An HTTP confirmation step (S-240) for determining whether the cause of the failure of the network equipment is 'HTTP error' or not; A step (S-250) of turning off the power in case of an HTTP error; A waiting time (S-260) for a predetermined time before turning on the power (ON); Determining whether the waiting time has elapsed (S-270); And a step (S-280) of turning on the power via the power reset relay 714c after the waiting time has elapsed.

In the present invention, a timer function may be included to set a waiting time (S-260) before the power is turned on. When the power of the main device connected to the network device is discharged through the timer function The power is turned on. This step allows you to resolve the unrecognized part of the USB port.

As described above, it is an object of the present invention to provide a system and a method for controlling an illegal state / stop control system, an unmanned security system, a life crime prevention system, an intelligent object tracking system, In the case of the conventional CCTV camera system, the power consumption of the field device in the field enclosure is usually 581W The total power consumption of the multi-CCTV camera system of the present invention is about 70W, which is about one eighth of that of the conventional system, and the power consumption is also reduced by 511W.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims (19)

An integrated multi-directional unattended surveillance camera comprising a main camera and a plurality of auxiliary cameras arranged in a circumferential direction of the main camera so as to monitor a rectangular area of the main camera,
A main body in which the main camera and the plurality of auxiliary cameras are mounted, a CCTV optical communication device, a modem device, an industrial switch hub device, a power supply device, and other related equipment are integrated into the main body, And a top plate member for allowing the exclusion thereof,
The main camera is composed of a multi-CCTV camera rotatable 360 degrees and equipped with a function of up / down / left / right / zoom (PTZ), and the auxiliary cameras are movable in a vertical direction It consists of a fixed camera,
The main body has a hollow upper case and a lower case of a vertically coupled type in which a bottom portion of the main body is rotatably opened to allow a base portion of the main camera to be inserted,
Wherein the coupling of the main body and the top plate member is covered with a cover member for protecting each constituent member from the external environment, the cover member being detachably coupled to the top plate member, An intermediate cover detachably coupled to the periphery of the upper case from a lower portion thereof and a lower cover detachably coupled to a periphery of the lower case from a lower portion of the intermediate cover. The method according to claim 1,
A plurality of infrared LEDs for illumination are provided on the surface of the main body in correspondence to each other in a rail moving manner so as to be operable in a vertical direction and a horizontal direction so as to provide infrared illumination in a direction in which the plurality of auxiliary cameras and the auxiliary cameras are viewed, Integrated multi-directional unmanned surveillance camera. 3. The method of claim 2,
Wherein a flat flange having a predetermined width is provided around the interface between the upper case and the lower case and rails are formed on upper and lower surfaces of the flange so that the auxiliary camera and the infrared LED for illumination can be moved along the rails, Wherein the camera body is mounted on the upper case and the lower case. The method of claim 3,
The auxiliary cameras are arranged on the rails of the flange surface at regular intervals along the periphery of the upper case and the infrared LEDs for illumination are arranged at regular intervals along the circumference of the lower case in correspondence with the directing angles of the respective auxiliary cameras Wherein the flanges are arranged on the rail at the bottom of the flange. The method according to claim 1,
The top plate member is mounted on the upper surface of the upper case and is coupled by a bolt tightening method. The CCTV optical communication device, the modem device, the industrial switch hub device, the power supply device, Characterized in that it has at least one opening window on the side of the top plate member for convenience of repair work, and each opening window is opened and closed by a detachable cover. The method according to claim 1,
A plurality of fixing holes for fixing and fixing the upper end of the main camera are formed on the upper surface of the upper case, and an upper end of the main camera is screwed into the fixing holes, The fixing holes may be formed by a large diameter portion for inserting the protrusions and a small diameter portion for engaging the protrusions so that the fixing protrusions can be engaged and fixed. In the case of a structure having fixing protrusions, And a universal mount structure capable of employing a camera, thereby enabling the integrated operation of the rotation type camera. The method of claim 3,
Wherein the cover member is made of a transparent material, and the upper cover is fixed to the upper surface of the top plate member in a screw tightening manner, the middle cover is fastened to the flange of the main body in a fitting rotation manner, Wherein the lower cover is fixed to the lower case by a screw fastening method through a plurality of screw holes provided in the peripheral edge and a plurality of fastening grooves formed along the circumferential surface of the lower case, And the protrusions are protruded at predetermined intervals along the inner circumferential surface of the intermediate cover at positions spaced apart from the support by a predetermined height so that the protrusions are engaged with the bent ends of the flange, Which can be fastened and fixed to a flange Unmanned Surveillance Camera. Up / Down / Left / Right / Zoom that integrates illegal state / stop control system, unmanned crime prevention system, life security system, intelligent object tracking system, unmanned signal / speed control system and parking management system (CCTV) camera, which is a rotating camera with built-in PTZ function. It also includes a fixed camera, an emergency bell and warning lamp to inform the center or outside of the emergency or danger situation on the spot, A loop coil / laser for violation and signal violation interrupts,
The multi-CCTV camera includes a CCD / CMOS imaging device; An image sensor device for binarizing an image image picked up by a lens of a camera; A main command processing device that selectively or comprehensively executes algorithms of a monitoring scenario, a monitoring target, a monitoring situation, and an operating scenario based on scheduling, and a compression / object recognition module that performs compression and object recognition of the data- A main image processing apparatus,
The main image processing apparatus includes a video receiving unit, a object recognition processing unit, and a codec unit including a video codec, an audio codec, and an image codec,
Wherein the main command processing apparatus includes an algorithm processing unit that processes the object data recognition information transmitted by the object recognition processing unit, and the algorithm processing unit includes an illegal parking distance algorithm, a life crime algorithm, an unmanned crime prevention algorithm, Wherein the control unit executes the management algorithm and the unmanned signal / overspeed interruption algorithm according to any one of claims 1 to 7. 9. The method of claim 8,
The multi-CCTV camera includes: a GPIO device for transmitting a current situation according to an emergency bell operation to a control center, and for allowing an operation of a beacon according to an emergency bell operation to be continuously performed for a time set by a user; A system recovery device that monitors the status of the network equipment in the field and automatically restores the equipment when a fault occurs; And a control mechanism device for transmitting and receiving the absolute coordinate values of the up / down / left / right control and the camera position of the multi-CCTV camera. 9. The method of claim 8,
Wherein the main command processing apparatus further comprises a camera controller for changing the rotation angle of the multi-CCTV camera in cooperation with the control mechanism device and the image receiving unit in the main image processing apparatus. 9. The method of claim 8,
Wherein the main command processing apparatus further comprises a user received data analysis unit for analyzing and processing a command requested by a user of the control center and an algorithm selecting unit for selecting and calling a corresponding algorithm according to the command. Surveillance system. A method for implementing an illegal main / stop control function of a multi-purpose unmanned monitoring system according to claim 8,
A step (S-011) in which an illegal main / stop algorithm is selected and executed in the algorithm processing unit;
An intermittent zone object recognition step (S-012) for judging whether or not an object exists in the illegal interval intermittent zone from the object recognition information of the object recognition processor;
(S-013) when the multi-CCTV camera performs the first intermittent photographing if it is determined that an object in the intermittent area exists;
Determining whether an intermittent time has elapsed (S-014);
If it is determined that the intermittent time has not elapsed (S-015), the multi-CCTV camera performs the second intermittent photographing;
A step (S-016) of generating a protocol for intermittent intermittent interception based on the photographed image and transmitting the generated intermittent intermittent information to a remote control center;
A step (S-017) of storing parking space interruption information through the metadata processing unit; And
(S-018) of requesting control to the control center (S-018). A method for implementing a life crime prevention function of a multipurpose unmanned monitoring system according to claim 8,
A step (S-021) in which the life crushing algorithm is selected and executed in the algorithm processing unit;
Emergency bell actuation phase (S-022) where an emergency bell signal is transmitted from the incident or emergency site;
A step (S-023) of detecting an input signal according to the emergency bell operation in conjunction with the GPIO processing unit and outputting an output signal to operate the warning light;
Performing (S-024) a protocol operation for generating life crime prevention information from an output signal of the GPIO processing unit and transmitting it to a remote control center;
Storing the life crime prevention information through the metadata processing unit (S-025);
(S-026) of judging whether a warning light operation time has elapsed according to an output signal of the GPIO processing unit; And
And a step (S-027) in which the warning light is operated for a predetermined time if the warning light operation time has not elapsed. A method for implementing an unmanned road crime prevention function of a multi-purpose unmanned monitoring system according to claim 8,
A step (S-031) in which an unmanned security algorithm is selected and executed in an algorithm processing unit;
A step (S-032) of determining whether a vehicle exists in the recognition zone from the object recognition information of the object recognition processor;
(S-033) confirming the illuminance in the recognition area when it is determined that the vehicle in the recognition area exists;
Operating the emitter (S-034) if the illuminance is not appropriate;
A step (S-035) in which the multi-CCTV camera photographs the vehicle when the illuminance is appropriate or the illuminance becomes appropriate by the projector;
(S-036) performing a protocol operation for generating crime prevention information from the photographed vehicle image and transmitting the crime prevention information to the remote control center; And
And a step (S-037) of storing the unauthorized crime prevention information through the metadata processing unit (S-037). A method for implementing an intelligent object tracking function of a multipurpose unattended monitoring system according to claim 8,
A step (S-041) in which an intelligent object tracking algorithm is selected and executed in the algorithm processing unit;
(S-042) a detection zone object recognition step of determining whether an object exists in the detection zone from the object recognition information of the object recognition processor;
(S-043) the multi-CCTV camera tracks the object if it is determined that the object exists in the detection area;
A trace range searching step (S-044) for determining a traceable range during object tracking;
(S-045) requesting the camera control unit for a camera absolute position value if it is determined that the camera is not out of the traceable range;
A step (S-046) of generating a protocol object for generating intelligent object tracking information from the object image being tracked and transmitting the intelligent object tracking information to the remote control center; And
And storing the intelligent object tracking information through the metadata processing unit (S-047). A method for implementing an unmanned signal / overspeed interception function of a multipurpose unmanned monitoring system according to claim 8,
A step (S-051) in which an unmanned signal / speed limit algorithm is selected and executed in the algorithm processing section;
A speed violation confirmation step (S-052) for judging whether or not the speed is violated;
If it is determined that the speed is violated, step (S-053) of confirming the illuminance as preparation for taking a vehicle;
A signal violation checking step (S-054) for checking whether the signal is violated if it is judged that the speed is not violated;
Operating the emitter (S-055) if the illuminance is not appropriate;
A step (S-056) in which the multi-CCTV camera photographs the vehicle when the illuminance is appropriate or the illuminance becomes appropriate by the projector;
A step (S-057) of generating a unmanned signal / speed information from the photographed vehicle image and transmitting the unmanned signal / speed information to the remote control center; And
And a step (S-058) of storing the unmanned signal / speed information through the meta data processing unit. A method for implementing a parking management function of a multipurpose unmanned monitoring system according to claim 8,
A step (S-061) in which a parking management algorithm is selected and executed in the algorithm processing section;
(S-062) judging whether or not the vehicle enters the detection area;
A step (S-063) of confirming illuminance as a preparation for taking a vehicle if it is determined that a vehicle in the detection area has entered;
(S-064) operating the floodlight if the illuminance is not appropriate;
A step (S-065) in which the multi-CCTV camera photographs the vehicle when the illuminance is appropriate or the illuminance becomes appropriate by the projector;
Displaying the photographed vehicle information on the image display means (S-066);
A step (S-067) of generating a parking management information from the photographed vehicle information and transmitting the generated parking management information to the remote control center; And
And a step (S-068) of storing the parking management information through the meta data processing unit. 14. The method of claim 13,
A step (S-110) in which the emergency bell operates;
(S-120) of the GPIO device confirming the input signal of the emergency bell via the DI input terminal;
A step (S-130) of confirming an end time of the emergency bell from the time when the emergency bell first sounds;
Determining whether the emergency bell operation time has passed the set time (S-140);
A step (S-150) of outputting an output signal from the GPIO device through the GPIO processing unit to the warning light if the emergency bell signal is generated again after the set time from the beginning;
A step (S-160) in which the warning light is turned on;
A step (S-170) of judging whether the warning light operation time is within the set time;
(S-180) maintaining a GPIO device and a user received data analysis unit interface so that the set time can be changed in the remote control center when the time is still within the set time; And
Further comprising the step (S-0190) of maintaining the operation of the beacon during the changed set time period. 19. The method of claim 18,
Wherein the second call is ignored within 2 to 5 seconds from the first signal of the emergency bell, and all of the signals are judged as one call.

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