Method for multichannel video-audio surveillance and system for realization of said method (variants)

FIELD: video surveillance.

SUBSTANCE: method includes video surveillance of controlled object state, while into television cable main of object high-frequency television modulated signal is sent, while to receive signal concerning state of S objects, each of which includes group of N video surveillance blocks, including camera and microphone, video-audio signals from each group of N video surveillance blocks are combined along low frequency, received complex video signal is converted from each group of N video surveillance blocks into high-frequency television modulated signal and it is synchronized with unified cable main - coaxial television cable, in arbitrary groups combination, via which received independent S signals are sent to input of visualization and/or recording systems.

EFFECT: higher efficiency.

3 cl, 2 dwg

 

The invention relates to methods and systems multichannel videoaudioplayer.e and can be used, in particular, for the protection of moving objects (e.g. vehicles), premises, territories, including areas around mobile objects.

Currently on the railway, there are many unsolved offences, which leads to high costs for the repair of rolling stock. In this regard, the task of continuous monitoring of what was happening in each wagon. This is important from the point of view of the organization of counter-terrorism measures.

Known systems videoaudioplayer.e that implement the method that contains a camera that transmits the television signal through the telephone network using a modem), or by the television channel (US No. 4916737).

Known system televizionnaya, which can be used for protection of premises, vehicles and other objects. The system provides adaptation (agreement on inclusion and the means of reproduction devices, responsible for collecting, managing, processing information from systems televizionnaya with standard household systems of recording and playback. The device pairing allows the system televizionnaya to be able to use it as a b the postal system monitoring and protection.

The television signal from each camera is fed to a device that can be negotiated to enable the playback (recording) and select an image from the N cameras with reproducing (TV) or recording (VCR) system. The block selection provides the coordination of selected channels using the control signal. The control unit ensures the consistent inclusion of cameras and playback (recording) using the control signal. The device pairing provides the possibility of using domestic television and video equipment surveillance system (RU # 2129304, 1999).

There is also known a method for remote monitoring of cargo in a moving train composition, which consists in external inspection of rolling stock, for which the Park arriving rolling stock moving in the field of vision of a stationary cameras overview and detailed review, inspection of the produce towards the direction of movement of the rolling stock, with television cameras detailed review produce a continuous record of the image, and using television cameras overview discover alleged violations of the integrity of the cargo, recognize deviations of the image of the observed object from its initial state by comparison with a reference image, for example, frame-by-frame FOSS is capitalsim analysis according to results of comparison in judging the safety of your cargo. The method is implemented as a device. This device - a system for remote control of cargo in a moving train composition contains controls arriving in the Park arrival of rolling stock, for example a television camera with video devices. While television cameras overview and detailed overview of the installed above the observed surface at distances defined by the predetermined ratio, the outputs of the cameras sequentially through the switch of video signals, provided with a switch of recording channels, and through cost digital video recording connected with a recording device. The output of the television camera overview additionally connected with individual visual display device, and the input of the recording device is additionally connected to the output of the meter cars (RU # 97110921, 1999).

The disadvantages of the above-described method and device, it implements, is that they are not intended to control the situation outside the Park arrival composition or Park departure.

A well-known system used as a surveillance tool for private residential and non-residential premises, open perimeters of warehouses, garages, administrative and industrial buildings, as well as intercoms, and implemented it FPIC is B. This system enables the use of coaxial wiring collective antenna for transmission of a television signal to the television sets of observation points without creating interference to the signals of television broadcasting stations. The system includes a TV, cable distributors, surveillance unit, the matching node of a television signal, the supply cable, power supply cable, and the unit video camera, microphone, video Converter, amplifier, modulator, the control filter, controlled filter, a local oscillator, and the matching node television signal includes a frequency-independent attenuator amplitude equalizer and block mixing signal (RU # 2149460, 2000).

The closest analogue is the way videoaudioplayer.e, which is that simultaneously with the visual observation of the state of the object implementing sound supervision and with simultaneous visual and acoustic monitoring security system simultaneously use the cable TV network object. The device for implementing the method includes microphones, blocks shaper RF modulated television signal, the television signal receiver, a broadband amplifier and control for television receivers of subscribers to cable the television network (EN No. 2153567, 2000).

The above-described method and system provide for the creation of a television surveillance system using coaxial wiring collective antenna for transmission of a television signal on a household television sets, but it cannot provide videoaudioplayer.e for a separate, independent from each other by spaces, such as train cars, trailers, trains, etc.

The problem to be solved by the proposed invention is the provision of the transfer of images and sound in real time from multiple cameras through a single coaxial cable, including multiple Autonomous areas, wagons, trailers, trains, etc. for an arbitrary sequence of their formation in the common highway. The system that implements the proposed method, at low cost helps to ensure that when the failure of one of the fragments of the highway (in one of the rooms, one car or trailer) due to the independent operation of the remaining fragments of the highway. It is possible to use household for reception of television receivers and VCRs.

In contrast to the above analogues and closest analogue, the proposed technical solutions allow to use backbone formed coaxial cable, for high-quality, simultaneous transmission of the common control signals from several blocks videoaudioplayer.e, located in different cars.

The possibility of transferring multiple high-frequency signals on a single coaxial cable is known from the prior art. However, attempts to transfer from multiple cameras located at different distances from a single point of observation, encountered a number of technical difficulties, not to get quality signal transmission from multiple cameras on a single remote monitoring. In particular, these challenges include differences in the level of the sum signal and spectrum group of television signals in the unit of addition ranges (the adder), the system spurious emissions, giving interference to TV RF signals, standing higher in frequency than the television signal transmitted from any camcorder, misalignment of the wave resistance of the line and, as a consequence, the presence of crosstalk, reflections, attenuation and beating other signal line. In the presence of branched coaxial line containing cable transmitters, combiners, amplifiers, camcorders, microphones, there is a need to provide them with food, this requires a rather complicated and time-consuming calculation of voltage drop for different cable types and different lengths of line in order to ensure the feasibility of the method and RA is tosposobnosti system.

Empowerment resulting from use of the invention, is achieved by transmitting information on multi-system backbone, connected to a personal computer which performs simultaneous display in different modes of video from surveillance cameras, selected by the operator switching on one channel with the output video and audio to a monitor) or a given cycle audio monitoring with microphone cameras.

In addition, the proposed system provides the possibility to increase the volume by connecting devices that are located in more cars.

The tasks are solved with the achievement of the relevant technical results due to the fact that the way multichannel videoaudioplayer.e, namely, that shall videoaudioplayer.e the state of the object, while in the TV, the cable object serves high-frequency modulated television signal coming on line in the imaging system and/or writing, to receive a status signal S of objects, each of which contains a group of N blocks of video surveillance, including video camera and microphone, combine videohudozhnika from each group of N blocks of video surveillance at a low frequency, convert the idea is sny videoaudiovisual from each group of N blocks of video surveillance in high-frequency modulated television signal and coordinate it with a single cable line - coaxial cable in any combination of groups, which transfer the received S independent signals at the input of the imaging and/or recording.

Moreover, the number N of cameras with microphones can be different for each of S objects, starting with N=1.

As the imaging and/or recording, you can use a television receiver and/or recorder. In addition, as the imaging and/or recording you can use the electronic computer such as a personal computer with the software-hardware multiplexer with synchronized audio and digital recording.

To achieve this objective, a system of multichannel videoaudioplayer.e containing blocks of video surveillance with camera and microphone, cable transmitter - shaper highway to convert low-frequency videohudozhnika in the high-frequency modulated television signal, the television, the cable and the imaging system and/or writing, to receive a status signal S of objects with groups of N blocks CCTV entered the unit summation N videoarticles in one comprehensive videoaudiovisual, the output of which is connected to the input cable of the transmitter - shaper highway to convert complex videohudozhnika from the N blocks is ideaalilahedane in the high-frequency modulated television signal, while TV, the cable is formed coaxial cable with connectors located at the junction of S sections of the highway.

The number of cameras with microphones can be different for each of S objects, starting with N=1.

As the imaging and/or recording may use a television set and/or VCR. In addition, the possible use of electronic computers, for example personal computer software and hardware multiplexer with synchronized audio and digital recording.

The objectives are possible due to the fact that all information flows are independent from each other, divided by the frequency in a single trunk coaxial cable, and the power to carry out the Central conductor of the coaxial cable is a single cable line, that is, the selection of food is carried out with the Central wire of the same coaxial cable.

The multi-channel videoaudioplayer.e for passenger rail composition consisting of S cars, S contains groups of N blocks of video surveillance, including video camera and microphone, the power summation N videoarticles in one comprehensive videoaudiovisual, cable transmitter - shaper highway to convert total low the frequency of the signal from the N cameras with microphones in the high-frequency modulated television signal, television cable line in the form of a coaxial cable with connectors located at the junction of sections of the line corresponding to the joints of S cars, and the imaging system and/or writing.

In each of the S cars can be installed four cameras with microphones, two of which are placed under the ceiling of the vestibule, and the other two under the ceiling on the front and the rear of the passenger compartment.

Cameras installed in the vestibule, can have a viewing angle of 150°and cameras installed in the passenger compartment, angle 90°.

As imaging systems and/or records may be used by the television receiver and/or VCRs, and computers, for example personal computer software and hardware multiplexer with synchronized audio and digital recording.

The camera platform and the passenger compartment can be housed in a vandal resistant housings.

The prior art multiplexers for multiscreen display images on a single screen. In known systems, it may be realized by software (computer system) or hardware implementation, due to their combination, etc. However, unlike the proposed invention, in known systems, each video from the camcorder to the multiplexer dostavlja is camping on a separate physical channel, i.e. the implementation of the system requires one coaxial cable (twisted pair, fiber and the like) on each camera. In addition, a separate wire is energized through separate channels of sound from microphones, control of the lens and other

In the proposed invention, all of these functions, including power, are implemented only in a single coax cable for all cameras, microphones and devices in the system, which greatly simplifies and reduces the cost of the proposed method and system.

The invention is illustrated by drawings, where:

figure 1 presents the system that implements the proposed method;

figure 2 - system for a railway passenger stock (trains).

The way multichannel videoaudioplayer.e is that exercise videoaudioplayer.e for a state S of objects, each of which contains a group of N blocks of video surveillance, including video camera 1 and the microphone 2. The signal from the N cameras 1 and 2 microphones summed by summation block 3 to obtain a single integrated low-frequency videohudozhnika. Agree S high-frequency modulated television signals from a cable television line of the object formed by the coaxial cable 4 in any combination of objects. On the highway received independent S signals p. the step input to the system 5 imaging and/or recording. The number N of cameras with microphones can be different for each of S objects, starting with N=1.

As the imaging and/or recording may be used in the television receiver 13 and/or the VCR 14. In addition, it is possible to apply, for example, a personal computer 15 with the software-hardware multiplexer with synchronized audio and digital recording.

The multi-channel videoaudioplayer.e contains blocks surveillance camera 1 and MIC 2, cable transmitter 6 - shaper highway to convert low-frequency videohudozhnika in the high-frequency modulated television signal, the television, the cable and the imaging system and/or writing. For passenger train consisting of S cars, the system S contains groups of N cameras 1 and 2 microphones, a summation block 3 for converting N videoarticles in one comprehensive videoaudiovisual, cable transmitter 6 - shaper line to convert the complex low-pass signal from the N cameras 1 and 2 microphones in the high-frequency modulated television signal. Television, the cable is formed coaxial cable with 4 connectors 7, located at the junction of sections of the line corresponding to the joints of S cars, and si is the subject of imaging and/or recording.

In each of the S cars can be installed four cameras 1, 2 microphones, two of which are placed under the ceiling of the vestibule, and the other two under the ceiling on the front and the rear of the passenger compartment. The microphones are fixed on the vibration of the fastener. Camera 8 and 9 installed in the vestibule, can have a viewing angle of 150°and the camera 10 and 11 installed in the passenger compartment, angle 90°.

The camera platform and the passenger compartment can be housed in a vandal resistant housings (not shown).

Camera 8 and 9, mounted in the ceiling of the vestibule (under the grille) provide top full review. When the opened the doors except the vestibule, is also provided an overview of part of the platform that gives the opportunity to prevent the clip drunk passengers, prams etc.

Two cameras 10 and 11, are installed under the ceiling on the front and rear walls of the passenger compartment, have the lens PIN HOLE with a diameter of 0.8 mm with an angle of view of 90°. This allows the details of a good identity to consider and listen to events in the farthest part of the passenger compartment. The chambers are thus remain invisible and are out of a possible access to passengers. All four cameras are connected to a summation block 3 video from these cameras in real time, the output of which sets the STOs videoaudiovisual from four chambers 8, 9, 10 and 11 of the carriage of the summation Block 3 with its output connected to the input cable of the transmitter 6 - shaper line that converts low-frequency videohudozhnika in the high-frequency modulated television signal. The summation block is characterized by that it further comprises a level control on one input for the alignment of levels of incoming and summable signals.

The power supply 12 is connected to the power supply system of the car (with voltage 50-54 DC), thereby supply power to all system components.

Cable transmitter 6 generates RF comprehensive television channel and broadcasts it in one TV coax 4 (system bus)laid along the entire train.

Cable transmitter provides:

- the absence of mismatch of the wave resistance of the line and, as a consequence, the absence of crosstalk, reflections, attenuation and beating other signal line;

- the lack of noise at a higher frequency television signal line;

- ability level group with a range of television signals and, as a consequence, the normal operation of the subsequent equipment line;

- normal completion signal (carrier frequency) reverse panel which means in the line, that is, signals from the consumer to the sources.

Cable transmitter includes a filtering unit system power supply and connected in series TV modulator harmonic filter (HPF), the amplifier's high frequency and attenuator. TV modulator is designed to carry television spectrum of low-frequency signal at the radio frequency TV signal (audio and videoediting television signal), the input cable of the transmitter serves low-frequency television signal output from the video camera and the low-frequency signal output from the microphone amplifier to which input signal from a microphone. The unit filtration system power supply includes a serially concatenated block barrier filter television signals for selecting a power supply unit protective filter feedback signals and the control line and the stabilizer, and the entrance of the filtration unit system power supply is connected to a Central residential line, which receives power from power source system. To the outlet of the filtration unit system power supply connected to the power system camera, microphone, microphone amplifier low frequency amplifier high frequency cable transmitter. The attenuator output cable of the transmitter is connected to the input of the adder is found.

At the junction of carriages parts of the trunk are connected to a sealed connector 7.

A guard with equipment for monitoring and recording can be equipped at any designated location in any car.

The proposed system provides a significant reduction in the price of equipment and installation due to, including, and on the order of a smaller number of cable and Germersheim. The system allows to form the composition, regardless of the sequence number of the car.

In addition, in case of failure of the equipment of one of the cars, all the rest will work, that is, the system permits independent operation of its component parts.

Brief technical characteristics of the system:

standard electric - 12 coaches;

the number of surveillance cameras - 48 (4 per car);

- the length of the highway system is about 400 meters;

- power - 50-54/2A;

- temperature range - from -40° to +80°;

- operation mode - -;

monitoring - simultaneous (in the case of installation of the computer) or four cameras on the car with a scan in the range of 1-15 seconds (in case of installation monitor with a VCR).

1. The way multichannel videoaudioplayer.e, namely, that shall videoaudioplayer.e the state of the object, while in the TV to below line object serves high-frequency modulated television signal, characterized in that for receiving a status signal S of objects, each of which contains a group of N blocks of video surveillance, including video camera and microphone, combine videohudozhnika from each group of N blocks of video surveillance at a low frequency, convert the complex videoaudiovisual from each group of N blocks of video surveillance in high-frequency modulated television signal and enter it into a single cable, which transmits S obtained independent RF modulated television signals to the input of the imaging and/or recording.

2. The way multichannel videoaudioplayer.e according to claim 1, characterized in that the number N of cameras with microphones can be different for each of S objects, starting with N=1.

3. The way multichannel videoaudioplayer.e according to claim 1 or 2, characterized in that the imaging and/or recording using the TV tuner and the VCR.

4. The way multichannel videoaudioplayer.e according to claim 1 or 2, characterized in that the visualization system and/or write using electronic computing machine, mainly personal computer software and hardware multiplexer with synchronized audio and digital recording.

5. System mnogokonfessionalnoe, containing blocks of video surveillance with camera and microphone, cable transmitter-shaper highway to convert low-frequency videohudozhnika in the high-frequency modulated television signal, the television, the cable and the imaging system and/or writing, is connected to a cable television line, characterized in that for receiving a status signal S of objects with groups of N blocks of the video output cable of the transmitter-shaper line associated with a cable television line, the system entered the unit summation N videoarticles in one comprehensive videoaudiovisual, the output of which is connected to the input cable of the transmitter-shaper highway to convert complex videohudozhnika signal from N blocks videoaudioplayer.e in the high-frequency modulated television signal, the TV, the cable is formed coaxial cable with connectors located at the junction of S sections of the highway.

6. The multi-channel videoaudioplayer.e according to claim 5, characterized in that the number N of cameras with microphones can be different for each of S objects, starting with N=1.

7. The multi-channel videoaudioplayer.e according to claim 5 or 6, characterized in that, as is istemi imaging and/or recording using the TV tuner and the VCR.

8. The multi-channel videoaudioplayer.e according to claim 5 or 6, characterized in that the visualization system and/or write using electronic computing machine, mainly personal computer software and hardware multiplexer with synchronized audio and digital recording.

9. The multi-channel videoaudioplayer.e for passenger rail consisting of S cars, containing blocks of video surveillance with camera and microphone, cable transmitter-shaper highway to convert low-frequency videohudozhnika in the high-frequency modulated television signal, the television, the cable and the imaging system and/or writing, is connected to a cable television line, characterized in that for receiving a status signal S cars with groups of N blocks of the video output cable of the transmitter-shaper line associated with a cable television line, the system entered the unit summation N videohudozhnikov in one comprehensive videoaudiovisual, the output of which is connected with entrance cable transmitter-shaper highway to convert complex videohudozhnika signal from the N blocks videoaudioplayer.e in the high frequency television mo is lirovannye signal, while TV, the cable is formed coaxial cable with connectors located at the junction of S parcel line corresponding to the joints of S cars.

10. The multi-channel videoaudioplayer.e according to claim 9, characterized in that each of the S cars are equipped with four video cameras with microphones, two of which are placed under the ceiling of the vestibule, and the other two under the ceiling on the front and rear walls of the passenger compartment.

11. The multi-channel videoaudioplayer.e of claim 10, wherein the video cameras installed in the vestibule, have an angle of 150°and the video cameras installed in the passenger compartment - angle 90°.

12. The multi-channel videoaudioplayer.e according to claim 9, characterized in that the imaging and/or recording using the TV tuner and the VCR.

13. The multi-channel videoaudioplayer.e according to claim 9, characterized in that the visualization system and/or write using electronic computing machine, mainly personal computer software and hardware multiplexer with synchronized audio and digital recording.

14. The multi-channel videoaudioplayer.e on any of PP-13, characterized in that the video camera in the vestibule and the passenger cabin vandalising the covers.



 

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11 cl, 14 dwg

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