Multichannel video-audio surveillance method and integrated high-frequency system for realization of said method

FIELD: video surveillance technologies.

SUBSTANCE: method includes surveillance of state of object, by surveillance blocks, each of which includes camera and microphone, low-frequency signals received from each block are converted to high-frequency television modulated signals, which are inputted into unified cable main, formed by coaxial television cable, along which received independent signals are sent to input of control panel, in form of television receiver or computer, provided with extension board, allowing to receive and display images of several surveillance objects concurrently, while power is fed along coaxial chamber of television cable main.

EFFECT: higher efficiency.

2 cl, 3 dwg

The invention relates to methods and systems multichannel videoaudioplayer.e and can be used, in particular, for round the clock protection technical areas, entrances of residential buildings, stairwells adjacent to residential buildings in the areas, Parking lots, technical objects, monuments, etc.

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 televideoapparatury, 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 televideoapparatury with standard household systems of recording and playback. The device pairing allows the system televideoapparatury to be able to use it as a household surveillance 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 (video is ignition) 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).

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 her way. 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, unit videoaudioplayer.e, the matching node of a television signal, the supply cable, power supply cable, and the power videoaudioplayer.e includes a 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 (EN№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. A device for implementing the method comprises a video camera, microphones, power driver RF modulated television signal, the television signal receiver, a broadband amplifier and control for television receivers of subscribers to cable television network (EN No. 2153567, 2000).

Described above provides the closest analogue to the creation of television surveillance system that implements the method videoaudioplayer.e using coaxial wiring collective antenna for transmission of one television signal into two or more household TVs. The closest analogue is not intended for the information of the information into a single point of protection (control) and does not provide for the reception of videohudozhnika from multiple cameras with microphones on one unit videoaudioplayer.e (or several blocks) with the opportunity of listening by operator sound environment with the selected object.

The problem to be solved by the proposed invention, I have provided is correct deficiencies nearest equivalent.

The technical result that is achievable with the use of the invention is to provide a transmission of image and sound in real time from multiple cameras with microphones through a single multi-channel system bus (coaxial cable) to the point of protection (control room). Moreover, the method and system provide a means of extending the capabilities of the system due to transmission over a single coaxial cable up to 64 synchronized with the audio video signals (PAL color or black and white, microphone with AGC and adjust the frequency response and sensitivity). The video signal synchronized with the audio, can be displayed on one monitor, or, if more than 16, on multiple monitors (for perception, respectively one, two or more operators).

The novelty of the invention lies in the fact that in contrast to the above analogues and closest analogue, the proposed technical solutions allow the use of a single line, formed by a coaxial cable, for high-quality, simultaneous transmission to a single remote control signals from a few blocks videoaudioplayer.e located in different places.

The possibility of transferring multiple high-frequency signals on a single coaxial cable is known from the prior art. However, attempts made is twice transmission 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 system performance.

Empowerment resulting from use of the invention, is achieved by transmitting information on multi-system backbone, connected to the North-South Expressway is mu computer which provides 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 the monitor) or on a specified cycle audio monitoring with microphone cameras.

In addition, the proposed system provides the possibility to increase the volume by a simple connection of additional devices - separate modules videoaudioplayer.e without investment in wired communications. This is accomplished 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 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 is delivered on a separate physical channel, i.e. the implementation of the system TRS is required by 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.

For the way of the task of achieving a technical result are solved due to the fact that exercise videoaudioplayer.e for S objects with blocks videoaudioplayer.e, each of which contains a video camera and a microphone, convert the low-frequency videoaudiovisual in the high-frequency modulated television signal, coordinate it (resistance) with a single cable line is a coaxial cable and summarize the obtained high-frequency modulated television signal with a high frequency modulated television signals transmitted over a single line from other units videoaudioplayer.e, simultaneously aligning the levels of each incoming and summable signals thus obtained independent S signals are passed to the input of the control unit via a coaxial cable single cable railway.

As remote the Board it is advisable to use the computer software and hardware multiplexer with the ability to sync audio and digital recording.

The technical result for multi-channel videoaudioplayer.e is due to the fact that the system contains:

- power injector (power supply filter);

- remote control;

blocks videoaudioplayer.e with a video camera and microphone;

- cable transmitter - shaper highway to convert low-frequency videohudozhnika in the high-frequency modulated television signal;

- cable television line,

this remote control is sequentially connected with each cable transmitter in the system unit summation ranges (adder) videohudozhnikov from cable transmitter, built-in television, the cable formed of a coaxial cable, the input of each cable of the transmitter is connected to the output of the corresponding video camera and microphone, and the output cable of the transmitter is connected to the input of the summation ranges, power injector, which represents a power supply with a filter that is designed to supply power to the elements of the system, namely cable transmitters and video cameras with microphones, and power supply (DC) through a filter, ensuring nepomucene television signals in the power supply and natutuhan connected to the Central conductor of the coaxial cable.

As a unit the control using a personal computer with an expansion card, allows you to receive and display simultaneously on the screen images of several objects (hardware multiplexer) with the possibility of synchronization of audio and digital recording.

The block of addition ranges (adder) is characterized by the fact that it further comprises a level control on one input for alignment of input levels and summed signals, the block contains a chain of passage of food.

The technical solution behind the introduction of the unit of addition ranges (adder) circuit of the passage of power, due to the fact that the system must provide for the passage of a current of a few amps on the Central conductor of the coaxial cable without making noise in the unit of addition ranges (adder), with the main task was to create a compact device, without complicating the system of extra elements. Use in the invention are known ferrite adders is not possible due to the fact that when the required values of current they are magnetized and stop working, and the strip or filter adders either not designed to pass DC or unhealthy when the required values of current (“burn”).

Cable transmitter is designed to convert video and audio is of Ignatov RF television signal, his “mixing” in the coaxial cable line for later viewing on television receivers, TV tuners, computers, or other television devices. 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 work up highway (main television amplifiers, equalizers, dividers, couplers, etc.);

- the food itself, the television camera (camcorder), etc. from an arbitrary voltage in the line. There is no need for time-consuming calculation of voltage drop for different cable types and different lengths of highways;

- normal completion signal (carrier frequency) reverse control 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 module, the EO is intended to move the spectrum of the low frequency television signal on a radio frequency TV signal (audio and videoediting television signal), if 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 summation ranges (adder).

Video cameras can be equipped with a turning device and zoom, can have an angle of 90°-150° and be in a vandal resistant housings.

The remote control includes a personal computer with the software-hardware multiplexer with synchronized audio and digital recording. The computer contains a color (or black and white) monitor, vipolnayushih the function block rendering multiband high-frequency switch, a modem, an input multi-channel high-frequency signal, an input multi-channel low-frequency video and audio signals, the controller connection management via telephone channels for General use and the input device information, connected to the computer processor through the data bus, and the expansion card.

The invention is illustrated by drawings, which depict:

figure 1 - schematic diagram of a television videoautomaten protect homes from a single control room;

figure 2 - module videoaudioplayer.e, including the power videoaudioplayer.e with a camera and microphone connected to the backbone via a cable to the transmitter and block summation ranges;

figure 3 - power supply with power injector system videoaudioplayer.e, combined with a block of addition ranges.

The system is a complex, placed in the service area and is built on a modular principle. All equipment connected by a single coaxial cable in an arbitrary configuration. The entire data exchange and power supply is also provided by a single coaxial cable. Remove cameras from security point preferably up to 5 km

The way multichannel videoaudioplayer.e implemented offer emeu system, is that exercise videoaudioplayer.e state's objects. The system contains S units videoaudioplayer.e, each of which includes a video camera 1 and the microphone 2. The received low frequency signal from each of the S cameras with 1 microphone 2 (or from the video camera 1 and the microphone amplifier LF 3) is converted into high-frequency modulated television signal. The received signal is injected through the block of addition ranges 4 (adder) in the TV, the cable 5, formed by a coaxial cable, which ultimately passed S high-frequency modulated television signals, each having its own carrier frequency. As one of the elements of the unit of addition ranges 4 can be used, for example, a circulator, a directional coupler, etc. From the output of the unit of addition ranges 4, built-in coaxial line 5, high-frequency signals fed to the input of the control unit 6, which includes 7 computer or a television receiver equipped with an expansion card allows you to receive and display simultaneously on the screen images of several objects. Personal computer archives images from video cameras, synchronized with the audio.

The power of the elements of the system that implements the described method may be carried out on a single what about the power supply 8 to the Central conductor of the coaxial cable line 5.

Integrated high-frequency multi-channel videoaudioplayer.e contains blocks videoaudioplayer.e with camera 1 and MIC 2, cable transmitter 6, which serves to convert the low-frequency videohudozhnika in the high-frequency modulated television signal with a predetermined carrier frequency, the TV, the cable 5 and the control unit 6 unit of rendering and/or writing (which may be used, for example, a computer).

The video camera 1 can have an angle of 150° or the angle 90° and be in a vandal resistant housings (not shown). Optionally, the camera may have a lens PIN HOLE with a diameter of 0.8 mm with an angle of view of 90°. This gives the opportunity in detail, with a good identity to consider and listen to what is happening in the lobby entrance.

The system installed, for example, in mnogopolyusnom house (see figure 1), consisting, for example, entrances and car parks, has S cameras 1 and 2 microphones (number of units). The output of each unit videoaudioplayer.e (camera and microphone) is connected to the input cable of the transmitter 8 - shaper line for converting the low-frequency signal from cameras 1 and 2 microphones in the high-frequency modulated television signal.

The cab of the capacity transmitter 8 - the driver signal line converts the low-frequency video and audio coming from the video camera 1, a microphone 2, a high-frequency modulated television signal, that is, generates a radio-frequency (40 MHz - 400 MHz) television signal and translates it into one TV coax 4 (system bus 5).

Cable transmitter 6 includes a filtering unit system power supply and connected in series TV modulator 16, harmonic filter (HPF) 17, the amplifier high frequency 18 and attenuator 19. TV modulator 16 is intended to move the spectrum of the low frequency television signal on a radio frequency TV signal (audio and videoediting television signal), the input cable of the transmitter 6 serves low-frequency television signal output from the video camera 1 and the low-frequency signal output from the microphone amplifier 3, to which input signal from the microphone 2. The unit filtration system power supply includes serially connected unit 20 of the barrier filter television signals when selecting the power unit 21 of the barrier filter of the feedback signals and the control line and the regulator 22, and the inlet of the filtration unit system power supply (block 20 of the barrier filter body is sionnach signals) is connected with the Central residential line, which receives power from power source system. To the outlet of the filtration unit system power supply (the stabilizer 22) connected to the system power supply of the camera 1, MIC 2, MIC low-frequency amplifier 3 and amplifier of high frequency cable of the transmitter 18. The output of the attenuator 19 cable transmitter is connected to the input of the summation ranges (adder) 4.

Television, the cable 5 is formed coaxial cable with connectors (or clips), located at the junction of sections of the highway. Television signals from outputs S cable transmitter 6 is fed to the input of block addition ranges 4, the output from which can get a comprehensive videoaudiovisual from all cameras with microphones located on objects. The block of addition ranges 4 (adder) contains a chain of supply passage bypassing the actual summation circuits constituting the power transmission DC 14 (choke) and further comprises a controller 15 level on one input for the alignment of levels of incoming and summable signals.

The received complex signal is fed to the input of the control unit 6, which includes 7 computer with monitor (color or black and white). The computer is equipped with a television (TV) expansion card, which performs demodulation of the received television is Ignatov and the division's low-frequency signals for simultaneous submission of multiple images on the monitor screen.

Colour RF computer monitor performs the function block rendering. The monitor displays information from one to S cameras (the number of “pictures” is determined by the capacity of the operator to perceive the visual information). The monitor has videoaudio on tape or low cost video capture card, it is also possible parallel computer, Autoswitching with programmable time flipping channels (auto switching of TV channels, used as an RF monitor).

RF switch coaxial line RF monitor allows you to receive up to 512 RF signals from the serial port (RS-232) or from the I / o Board RF signals in a personal computer (RF multiplexer).

At the command of the operator (mouse click on the corresponding sector of the display screen) on the monitor displays one of the channels, that is, information from the selected unit videoaudioplayer.e, when it comes full videoaudiovisual and is provided, along with viewing pictures, listening to the sound environment from any camcorder microphone.

The power supply 12 is connected to the power supply system and through the power injector 13 (filter) to the coaxial cable (line 5), which allows you to supply power to all system components. The filter 13 is designed for short-is Askania TV signals in the power supply and natutuhan, and to reconcile the wave resistance with the highway.

Thus, the input power to the Central conductor of the coaxial cable (camera cable transmitters etc). The input power from the power source can be combined with the block of addition ranges 4 for decoupling a power line and enter the remote control.

Remote control equipment for monitoring and recording can be equipped in any selected place, for example, in the control room.

1. The way multichannel videoaudioplayer.e, namely, that monitor the state of the object through blocks videoaudioplayer.e, including the camera and microphone are received from each block of the video-frequency signal is converted into frequency modulated television signals that are injected into a single cable line formed coaxial television cable, which transmits the received independent signals to the input of the remote control, representing a television receiver or computer supplied with the expansion card allows you to receive and display simultaneously on the screen image multiple objects of observation, with the power to carry out on coaxial cable TV cable master of the I.

2. The way multichannel videoaudioplayer.e according to claim 1, characterized in that the computer archives images from video cameras, synchronized with the audio.

3. The multi-channel videoaudioplayer.e site that contains remote control, power supply, blocks of video surveillance, each of which contains a video camera and microphone, cable transmitters designed for conversion of low-frequency videohudozhnika in the high-frequency modulated television signal, the block of addition ranges and a single TV cable line, formed by a coaxial cable, a power supply connected to a single cable trunk line with power via a coaxial television cable on the cable transmitters and video cameras with microphones, the input unit summation ranges associated with the outputs cable transmitters, each of which is connected to the corresponding camera with microphone, the output of block addition ranges are connected to a single cable line, which is connected to the input of a television receiver or a computer equipped with an expansion card allows you to receive and display simultaneously on the screen images of several objects.

4. The multi-channel videoaudioplayer.e according to claim 3, characterized in that h what about the video camera housed in a vandal resistant housings.