RU163536U1 - SMALL MOBILE VIDEO MONITORING POINT FOR ALARM SYSTEM - Google Patents

Abstract

A small-frame mobile video monitoring station for an alarm system, comprising: a battery or battery pack; a rack with a tripod providing mechanical strength of a small-frame mobile video control point when installing it on the ground; alarm receiver with a receiving antenna of the first radio channel for receiving alarm signals from an external security sensor; a radio modem with a transmitting and receiving antenna for forming a second radio channel of communication with an external central control panel; a video camera incorporating a buffer designed to store pre-alarming, alarming and post-alarming video information and transmit it in a low-frame mode to an external central control panel via a second radio communication channel; IR illuminator and processor, configured to control the operation of a video camera, IR illuminator, alarm receiver and radio modem; a video camera, an IR projector, an alarm receiver and a radio modem are interconnected using a patch bus, characterized in that a video surveillance and alarm unit is inserted in it, a rotary device for articulating the video surveillance and alarm unit with a tripod stand and a mounting device for connecting battery or rechargeable power supply with a rack with a tripod; the tires mentioned: an alarm receiver with a receiving antenna of a first radio communication channel; a radio modem with a transmit-receive antenna for the formation of a second radio channel

Description

The utility model relates to the field of burglar alarms and can be used as part of security systems using mobile video surveillance tools designed to detect and identify an intruder penetrating through a surveillance zone in a protected area.

Known rapidly deployable complex protection of extended sections "Informator" described in the patent for utility model RU No. 134344, IPC G08B 25/00, publ. 2013. This complex consists of linear and station parts. The linear part contains a power supply, a linear communication unit, as well as n modules, each of which contains at least three video cameras with built-in IR illumination, at least two passive units and an active linear unit. Communication between the linear part and the stationary is provided via a fiber optic communication line or using a radio relay communication line. Video cameras of each module provide capture of images that are digitized and transmitted in digital format via a communication line to the station part of the complex. All video cameras of the module operate in a continuous mode, and the received video information is saved and analyzed by the video server of the station part and, if necessary, displayed on one of the monitors of the station part of the complex, where it is analyzed by the video server operator.

Common essential features with the claimed technical solution are: a linear module, a video camera with built-in IR illumination, a power supply, an active linear unit and a radio link.

The disadvantage of this complex is the low functional reliability for the detection and reliable identification of the intruder. Each module of the linear part performs the function of continuous video surveillance of the protected area. With a large number of modules of the linear part (up to 20) with the number of cameras up to 60 pieces, the process of detection and reliable identification of the intruder becomes problematic due to the routine work of the operator, which entails a lot of work to detect and identify the intruder in huge arrays of video information. It should be noted the increased power consumption of the complex due to the continuous mode of operation of the cameras.

Closest to the technical nature of the claimed utility model is "Low-frame mobile video surveillance system" (prototype), described in the patent for invention RU No. 2504015, IPC G08B 25/08, publ. 2014. The first version of this system contains (see Fig. 1) a central control panel, a group of security sensors for detecting an intruder, and a group of video control points. Each video monitoring station contains a battery or accumulator power supply, a rack with a tripod, an alarm receiver with a receiving antenna of the first radio channel for receiving alarm signals from an external security sensor, a radio modem with a transmitting and receiving antenna for forming a second radio channel with an external central control panel, a video camera , which includes a buffer designed to store pre-alarming, alarming and post-alarming video information and transmitting it in a low-frame mode to an external the second central control panel via the second radio channel, an IR illuminator, a switching bus and a processor configured to control the operation of a video camera, an IR illuminator, an alarm receiver and a radio modem. Video monitoring points receive messages from security sensors using alarm receivers via a receiving antenna. Upon receipt of an alarm message caused by the intruder, the video camera of the video monitoring point is switched on to the active video monitoring mode for a specified period of time. In this mode, video information is recorded in the video camera buffer, which saves frames of pre-alarming, alarming and post-alarming video information for further transmission in low-frame mode to the central control panel via a second radio channel. After completing the procedure for transmitting video information to the central control panel, the video monitoring point goes into inactive (standby) standby mode. At night, to obtain a high-quality image in the observation zone, an IR illuminator is turned on. The first and second communication channels operate at different frequencies, which ensures uninterrupted transmission of radio messages without loss of information and without mutual influence.

Common essential features with the claimed technical solution are: a battery or accumulator power supply, a rack with a tripod, an alarm receiver with a receiving antenna of the first communication channel, a radio modem with a receiving and transmitting antenna for forming a second communication channel, a video camera having a buffer in its composition to save pre-alarming, alarming and post-alarming video information and transfer it in a low-frame mode to an external central control panel via a second radio channel communication, IR Illuminator, switching processor bus and adapted to control the operation of video cameras, infrared illuminator, receiver and alarm radio.

The disadvantage of this small-frame mobile video surveillance system is the absence at each point of video monitoring of “intrinsic” means of detecting an intruder, for example passive infrared detection means (PIXO), the detection zone of which is aligned in space with the surveillance zone of the video camera. The presence of PIKSO in combination with a video camera will increase the likelihood of detecting an intruder, determine the direction of movement and more reliably perform its identification (human or animal). In addition, the video monitoring station (see Fig. 4) has a complex structure, which complicates its service on the ground.

The problem to which the proposed technical solution is directed is to increase the reliability of detection and identification of the intruder and simplify the design of a low-frame mobile video control point. In this regard, the low-frame mobile video monitoring station should be made in the form of a simplified prefabricated structure, which should consist of a video surveillance and alarm unit, a rotary device, a tripod stand, a mounting device, and a battery or battery pack. The CCTV and alarm block should be made in the form of a monoblock, inside of which the main component electronic parts of the product are placed.

To solve this problem, a small-frame mobile video monitoring station for an alarm system should contain: a battery or accumulator power supply; a rack with a tripod providing mechanical strength of a small-frame mobile video control point when installing it on the ground; alarm receiver with a receiving antenna of the first radio channel for receiving alarm signals from an external security sensor; a radio modem with a transceiver antenna for forming a second radio channel of communication with an external central control panel; a video camera incorporating a buffer designed to store pre-alarming, alarming and post-alarming video information and transmit it in a low-frame mode to an external central control panel via a second radio communication channel; IR illuminator and processor configured to control the operation of a video camera, IR illuminator, alarm receiver and radio modem. The video camera, IR illuminator, alarm receiver and radio modem must be interconnected using a patch bus. A video surveillance and alarm unit, a rotary device for articulating the video surveillance and alarm unit with a tripod stand, and a mounting device for connecting a battery or battery power supply to the tripod stand must be introduced into a small-frame mobile video monitoring station. The video surveillance and alarm unit must include, interconnected by means of a switching bus, the aforementioned: an alarm receiver with a receiving antenna of the first radio channel, a radio modem with a transmitting and receiving antenna for the formation of a second radio channel, a video camera, an IR projector and a processor . In addition, a passive infrared detection means (PIXO) must be introduced into the video monitoring and alarm unit, which must be connected to the switching bus, and the video surveillance zone, the PICSO detection zone and the area lighting area with an IR spotlight must be aligned in space, and the processor is made with the additional ability to control the operation of PIKSO.

In FIG. 1 is a structural diagram of a small-frame mobile video monitoring station for an alarm system, where the designations are introduced: a small-frame mobile video monitoring station - 1, a video surveillance and alarm unit - 2, a rotary device - 3, a tripod stand - 4, a mounting device - 5, a battery or rechargeable power source - 6, video camera - 7, buffer - 8, PIXO - 9, IR illuminator - 10, alarm receiver - 11, receiving antenna - 12, radio modem - 13, transmitting and receiving antenna - 14, processor - 15, first radio channel - 16, the second radio communication channel is 17, the switching bus is 18, the observation area is 19.

In FIG. Figure 2 shows an example of the appearance of the structure (complete) of a small-frame mobile video control point 1, where additional designations are introduced: window - 20 cameras, window - 21 PICCO, window - 22 IR illuminators, clip - 23.

In FIG. 3 shows an example of the location on the terrain of zones formed by the video surveillance and alarm unit 2 of a small-frame mobile video monitoring station 1. FIG. 3 additional designations are introduced: the observation zone - 24 cameras, the detection zone - 25 PIXOs, the area lighting area - 26 IR illuminators. Zones are shown in a close perspective, top view.

In FIG. 4 shows the same zones shown in FIG. 3, but they are shown in a distant perspective, a top view. In FIG. 4, designations are additionally introduced: the intruder - 27, crossing the surveillance zone of the video camera, the moment the alarm was generated - 28.

In FIG. 5 shows a generalized block diagram of the algorithm of the processor 15.

In FIG. 6 shows the formation of an on-site alarm system based on the use of several small-frame mobile video monitoring points 1. FIG. 6, designations are additionally introduced: the central control panel - 29, the security sensor - 30, the transmitting antenna - 31, the repeater - 32. Communication of the small-frame mobile video monitoring points 1 with the central control panel 29 is carried out using the second radio communication channel 17.

The inventive low-frame mobile video monitoring point 1 in accordance with GOST 2.701-2008 is a device consisting of a set of elements representing a single design. The video monitoring point 1 consists of a video surveillance and alarm unit 2, a rotary device 3, a rack with a tripod 4, fastening devices 5, and a battery or battery pack 6 (see Fig. 2). These elements are connected by honey in accordance with GOST 21.101-68 assembly operations: articulation and screwing.

The proposed low-frame mobile video monitoring station operates as follows.

Each of the points of video monitoring 1 is installed on local areas of the protected area, and the video surveillance and alarm units 2 are oriented on the ground in direction 19 to the observation zone (see Fig. 1 and Fig. 6). Orientation in space can be carried out in azimuth and elevation. The CCTV and alarm unit 2 of each video monitoring point 1 forms three spatial zones (see Fig. 3 and Fig. 4): the surveillance zone 24 of the video camera, the detection zone 25 PIXO and the coverage area 26 with an IR illuminator. For the formation of these zones, the corresponding windows are used in the casing of the CCTV and alarm unit 2: window 20 of the camera, window 21 PICCO and window 22 of the IR illuminator. In FIG. 3 zones are shown in a close perspective, top view. In FIG. 4, these same zones are depicted in the far angle, where they almost completely coincide in space. When the intruder 27 enters the detection zone 25 of PIKSO 9, modulation signals will be generated in this detection tool, which will generate a signal to turn on the camera, which will indicate the beginning of the movement of the intruder in the detection zone. When this signal appears, the video camera 7 of video monitoring point 1 is turned on in the active video monitoring mode and video information from the observation zone 24 is recorded in the buffer 8 of this video camera. The buffer 8 saves frames of pre-alarming, alarming and post-alarming video information for further transmission in low-frame mode to an external central control panel 29 via a second communication channel 17 (Fig. 6). Simultaneously with the functioning of the video camera 7, PIKSO 9 processes the modulation signals of the moving intruder according to a certain algorithm and, if the decision rule is fulfilled, generates an alarm. The alarm generating moment 28 is shown as a cross in FIG. 4. At this point in time in the buffer 8 of the video camera 7, the alarm is “linked” to one of the recorded frames, which becomes a frame of alarming video information. Synchronously with the appearance of an alarm, they are selected in the buffer and pre-alarm and post-alarm video information frames are prepared for transmission. It should be noted that the signal to turn on the camcorder appears earlier than the PIXO alarm, which eliminates the loss of video information about the beginning of the intruder's movement and contributes to the possibility of a more complete and reliable identification thereof. The process of transmitting an alarm signal and video information to the central control panel 29 is carried out by a radio modem 13 with a transmitting and receiving antenna 14 by means of a second radio communication channel 17. After the procedure for transmitting video information, the video camera 7 is turned off and the video monitoring point 1 goes into an inactive (standby) standby mode. At night, to obtain a high-quality image, an IR projector 10 is turned on, which illuminates the surveillance area of the video camera. In order to save energy, the IR illuminator is turned off automatically after turning off the camcorder. Each video monitoring point 1 is configured to receive messages from security sensors 30 installed in the area of approach to the protected area for early warning via the first communication channel 16 about an alarm situation near the protected area (see Fig. 6). The first radio communication channel 16 is organized between the transmitting antennas 31 of the security sensors 30 and the alarm receivers 11 with the receiving antennas 12 of each video monitoring point 1. To avoid confusion between the monitoring zones of the video monitoring points 1 and the security sensors 30 assigned to them, each security sensor has its own address, corresponding to the address of the video control point. The first radio communication channel can also be used as a communication channel with other devices, systems and alarm systems when integrating low-frame mobile video monitoring points into other security systems. After receiving the message from the security sensor 30, the video camera 7 of the video monitoring point 1 is turned on in the active video monitoring mode and the video information from the monitoring zone 24 is recorded in the buffer 8 of this video camera. The process of transmitting video information to the central control panel 29 is carried out by the radio modem 13 with the transceiver antenna 14 by means of the second radio communication channel 17. After the completion of the procedure for transmitting video information, the video camera 7 is turned off and the video monitoring point 1 goes into an inactive (standby) standby mode.

The processor 15 is configured to control the operation of a video camera, IR illuminator, alarm receiver, radio modem and PIXO. The processor 15 also performs the function of switching information flows or signals from one source points to other desired destinations (see Fig. 1):

- the signal for turning on the video camera caused by the modulation of the signals recorded by PIXO 9 is transmitted to the video camera 7 for its inclusion in the active video monitoring mode (transmission sequence from element to element 9-15-7);

- the alarm generated by PIXO 9 is transmitted to the video camera 7 to “bind” the alarm to the frame of the alarm video information (sequence 9-15-7);

- the message from the security sensor 30, received by the alarm receiver 11, is transmitted to the video camera 7 for its inclusion in the active video monitoring mode (sequence 11-15-7);

- in the active video monitoring mode, the alarm signal and video information in the form of pre-alarm, alarm and post-alarm information stored in the buffer 8 are transmitted from the output of the video camera 7 to the radio modem 13 for further transmission to the central control panel 29 via the second communication channel 17 (sequence 7-15 -13);

- the command to turn on the IR illuminator is transmitted from the processor 15 to the IR illuminator 10 (sequence 15-10);

- the command to turn off the camcorder is transmitted from the processor 15 to the camcorder 7 (sequence 15-7).

A generalized block diagram of the functioning algorithm of the processor 15 is shown in FIG. 5. In the prototypes of low-frame mobile video monitoring points, processors such as PIC 18LF6622 I / PT from Microchip were used.

The exchange of information between elements 7, 9, 10, 11, 13 and 15 is carried out by means of a switching bus 18, which electrically connects these elements and is laid inside the CCTV and alarm units 2. A battery or battery pack 6 provides power to all electronic components of the video monitoring point 1 .

Passive infrared detection tool (PIKSO) 9, presented in the proposed solution, is designed to detect an intruder (person) moving within the detection zone by infrared radiation of the human body. Technical solutions for the implementation of PIKSO are well known. The principles of operation and functioning algorithms are described in detail in the technical literature, for example, in the book “Perimeter Protection Systems” by G.F. Shanaeva and A.V. Leusa, Security Focus, Moscow, 2011, subsection 2.13. "Passive infrared (PIC) detection means", p. 114-126, www.iss.ru. In the proposed low-frame mobile video monitoring station, for example, a STA-453 / M2 PIC detector (p. 125 of this book) or another similar PIKSO can be used. In this technical solution, PIKSO is proposed to be placed inside the body of the CCTV and alarm unit 2.

The first communication channel 16 and the second communication channel 17 operate at different frequencies (for example, 433 MHz and, accordingly, 2.4 GHz), which ensures uninterrupted transmission of radio messages without loss of information and without mutual influence. The frequency for the second radio channel of communication is chosen to be larger in numerical value in order to provide the possibility of better transmission of video information.

In FIG. Figure 2 shows an example of the design (assembled) of a small-frame mobile video control point 1. Video control point 1 consists of a video surveillance unit and alarm 2 mounted on a rack with a tripod 4 using a swivel device 3 by articulation and screwing. The rotary device 3 allows you to orient (align) the block of video surveillance and alarm 2 in the area in azimuth and elevation, and the clamp 23 provides mechanical fixation after adjustment. The transceiver antenna 14 is screwed onto the CCTV and alarm block 2. The mounting device 5 provides fastening of the battery or accumulator power supply 6 to the rack with the tripod 4. The mobility of the video monitoring points 1 is ensured by the possibility of their quick placement on the ground when using racks with sliding tripods four.

Video monitoring point 1 is the main device for organizing a multi-link alarm system based on it. An example of the organization of such a system is shown in FIG. 6. Many video monitoring points 1 are located in a protected area. When intruders penetrate the protected area, from each point of video control 1 that detects the intruder, alarms with frames of pre-alarming, alarming and post-alarming video information are transmitted to the external central control panel 29 via the second communication channel 17. The frames of the received video information can be viewed on a graphic display for the purpose a detailed analysis of an alarming situation, reliable identification of violators and determining the direction of their movement. On this basis, a decision should be made on their detention by the security service. With the remote location of the video monitoring points 1 from the external central control panel 29, repeaters 32 can be used.

Prototypes of low-frame mobile video control points were subjected to year-round testing for one year. Their steady operability and achievement of the claimed technical result in accordance with the claimed utility model was confirmed.

The proposed low-frame mobile video monitoring points can be used both for the protection of local areas, areas, limited control zones, and for extended security lines. They can also be effectively used to protect territories in wooded, marshy and mountainous areas. A special role is given to the protection of mobile objects during temporary parking (trains, convoys, etc.), as well as the protection of industrial and military facilities in various emergency situations (terrorist threats, accidents, etc.).

Claims (1)

A small-frame mobile video monitoring station for an alarm system, comprising: a battery or battery pack; a rack with a tripod providing mechanical strength of a small-frame mobile video control point when installing it on the ground; alarm receiver with a receiving antenna of the first radio channel for receiving alarm signals from an external security sensor; a radio modem with a transmitting and receiving antenna for forming a second radio channel of communication with an external central control panel; a video camera containing a buffer designed to store pre-alarming, alarming and post-alarming video information and transmit it in a low-frame mode to an external central control panel via a second radio channel; IR illuminator and processor, configured to control the operation of a video camera, IR illuminator, alarm receiver and radio modem; a video camera, an IR projector, an alarm receiver and a radio modem are interconnected using a patch bus, characterized in that a video surveillance and alarm unit is inserted into it, a rotary device for articulating the video surveillance and alarm unit with a tripod stand and a mounting device for connecting battery or rechargeable power supply with a rack with a tripod; the tires mentioned: an alarm receiver with a receiving antenna of a first radio communication channel; a radio modem with a transmit-receive antenna for the formation of a second radio communication channel; video camera; IR spotlight and processor; a passive infrared detection means (PIXO) is additionally introduced into the video monitoring and alarm unit, which is connected to the switching bus, the video surveillance zone, the PICSO detection zone and the terrain lighting area being IR-illuminated, and the processor has the additional ability to control the PICCO operation .

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