Security television system

FIELD: physics.

SUBSTANCE: computer includes a video card; in the television camera, a first television signal sensor (TSS) is based on an array of charge-coupled devices with "row-frame transfer", and the use of an additional pulse former for clock powering of the photodetector enables summation of charge signals in the memory section accumulated in the photodetector section thereof. As a result, the signal-to-noise ratio for a general view image increases in proportion to the increase in energy of the useful signal thereof, i.e. the number of accumulation frames.

EFFECT: high quality of the general view image due to a higher signal-to-noise ratio at the output of the array of charge coupled devices of the first television signal sensor owing to summation, in the memory section thereof, of charge packets formed in the photodetector section.

5 cl, 10 dwg, 2 tbl

 

The present invention relates to television technology and mainly can be used in security systems monitoring, surveillance and detection of moving objects, which are made using photodetectors in the form of a matrix of charge-coupled devices (CCD) and computers.

The closest to the technical nature of the claimed invention should be regarded as closed-circuit television system [1], comprising a first lens optically connected to the input of the beam splitter, a first output which is the output of a normal optical image (image of General view) and optically connected with photomixing first sensor of a television signal (the first TPA), and the second output of the beam splitter is output increased optical image (image enlarged) and optically connected with photomixing second TPA; connected in series selector clock pulses and the signal shaper frame, connected in series switching unit and a visual display unit; the unit controller designed for spatial positioning of the second TPA and consisting of a first actuator, kinematically associated with the first position sensor, and the second drive kinematically associated with the second position sensor, and the output of the first Yes the Chica situation is the first output block controller and the output of the second position sensor, the second output unit guidance, the output of the second TPA connected to the first information input of the switching unit, and the output of the first TPA - input selector clock pulses and respectively to the second information input of the switching unit, the third information input of which is connected to the output of the shaper signal frame, the first control input of which is connected to the first output block controller and the second control input to the second output unit guidance, while the output of the second TPA connected to the first input of the motion detector, the output of which is connected to the control input of the switching unit and an output signal "alarm"and the second input of the motion detector is an input "alarm reset".

A beam splitter closed-circuit television system includes sequentially arranged and optically coupled semi-transparent mirror, a collective lens, a reflecting mirror and a second lens, and the input of the beam splitter optically connected with translucent mirror, the first output beam splitter to the second lens and the second output of the beam splitter is formed optical image in transmitted light semi-transparent mirrors.

For a device prototype assumes that the following characteristics:

the first lens, a beam splitter, the first TPA unit controller the second TPA, the selector pulses shaper signal frame and switching unit included in the camera, which is located on the transmission side alarm system, through the switching unit, the output of the first TPA is the output of "video 1" video cameras, and the output of the second TPA respectively output video 2 video cameras;

the first and second actuators block pointing cameras are remotely controlled actuators positioning the first TPA respectively horizontally and vertically;

- motion detection and visual display unit located on the receiving side of the security system;

as the visual display unit can be used a personal computer, for example, a computer with Windows XP operating system, which is equipped with a hardware product series AVerTV [2];

- control pointing of the camera is made from computer command "Right/Left" and "Up/Down", and the control unit switching the camera - when the command "Alarm" from the motion detector;

between the transmitting devices and the transferor made the communication line, and performs the five conductors of the connection cable: output "video 1" video cameras with the "video" port on the computer, exit the "video 2" camera with the first input of the motion detector, the "alarm" signal at the output of the motion detector is managing the input of the switching unit in the camera and respectively output commands pointing "Right/Left" and "Up/Down" on the computer with the inputs of these commands in the camera.

The disadvantage of the prototype is the low quality of the generated television image system of the General form due to optical losses in the beam splitter.

Be aware that the value of the illumination target of the photodetector of the first TPA with respect to the illumination target of the second attenuated TPA coefficient, which is determined by the product of:

,

where D/f - relative aperture of the second lens, ie,

the ratio of the diameter D of the entrance pupil to the focal length f;

τ1the transmittance of the second lens;

τ2the transmittance of the collective lens.

This work could reach a value of 1/10, which degrades the sensitivity of the system in the channel of the first TPA to order.

The objective of the invention is to improve the quality of the image of General view by increasing the signal-to-noise ratio at the output of the CCD image sensor of the first sensor of the television signal (TPA) by summing up in his memory sections of the charge packets generated in the photodetecting section.

The problem is solved in that in the inventive closed-circuit television system, which contains the transmitting side of the camera, consisting of consecutive and optically coupled input lens, beam splitter, two TPA performed on onomastic CCD, unit guidance and serially connected clock selector and driver signal frame, and the first output beam splitter is the output of "image of General view and optically connected with photomixing first TPA, and the second output of the beam splitter is the output of "image enlarged and optically connected with photomixing second TPA, the power controller designed for the spatial positioning of the second TPA, and consisting of a first drive kinematically associated with the first position sensor, and the second drive kinematically associated with the second position sensor, and the output of the first position sensor is the first output unit controller and the output of the second position sensor - a second output unit guidance, the output of the first CSD is connected to the input of the selector pulses, a first control input of the shaper signal frame connected to the first output block controller and the second control input to the second output unit controller and the output of the first TPA is the output of "video 1" cameras, the output of the second TPA - out video 2 video cameras, and the output of the signal shaper frame - signal output "frame" cameras, at the receiving side of the television system is a personal computer, and between the camera and computer is rum - the line, consisting of five of the cable strands, three of which are connected to output video 1 camera input video 1" on the computer and respectively output signals for commands pointing "Right/Left" and "Up/Down" on the computer with inputs these signals to the camera, with the first TPA cameras is made on the basis of the CCD image sensor with line personnel transfer, and the second CAD - based matrix CCD with line wrapping", and part of the first CSD additionally introduced pulse shaper (PHI)providing in the memory sections CCD summation of the charge packets generated in the photodetecting section; the other two cable conductors of the communication line is the connection of the output signals "video 2" and "frame" cameras to the corresponding inputs on the computer, and in an expansion slot on the motherboard of a computer optional video card is installed, coordinated through the channels I/o, control and power bus of the computer and designed for converting first and second input analog video signal into digital form, the input digital video signal "video 1" in the RAM period PTtoin and out of her with a period of Ttowhere Tto- frame duration, n is the number of summed frames, input/output digital live video from the persecuted "video 2" with a period of T to, complete mixing of the output digital video signal "video 1" to the signal "frame", perform frame-to-frame comparison of the output digital video signal "video 2" and the signal "alarm" detection threshold interframe difference, and video output video Board is the output of the image signal of a television system.

Comparative analysis with the prototype shows that the proposed closed-circuit television system is characterized by the presence of a new block - video Board in the computer; executing the first TPA cameras based on CCD with another organization ("line-personnel transfer"), the presence of a pulse shaper (PHI) as part of the first TPA, as well as the presence of the camera of new connections between the new and the rest of the blocks.

The combination of known and new features not known from the prior art, therefore, the proposed solution meets the requirement of novelty.

In the inventive solution, in comparison with the prototype, video cameras, forming the image of General view, is the gain in the signal-to-noise ratio by summing up the section the memory of a sensor of the charge signals accumulated in his photodetecting section.

As a result, the image of General view of the relation signal /noise increases in proportion to the increase of energy of the useful signal is Ala, i.e. the number of stack frames accumulation.

Technical result and methods of its achievement of the proposed solution meets the requirement of inventive step.

Figure 1 shows a block diagram of the inventive television system, figure 2 - structural diagram of the first TPA; figure 3 - functional diagram of the technological organization of the photodetector for the first TPA; figure 4 is a structural diagram of PHI in the first TPA; figure 5 is an example of the electrical circuit of the counter duration of accumulation in the composition of PHI; 6 is a timing diagram illustrating a generalized output signal of this counter; figure 7 is a timing chart explaining operation of the first TPA; Fig - possible electrical circuit implementation of the block pointing in the composition of the cameras; figure 9...10 presents as possible examples of images generated by the proposed security system in the process.

The inventive closed-circuit television system (see figure 1 and figure 2) contains on the transmission side the camera in position 1, comprising sequentially arranged and optically coupled input lens 1-1, beam splitter 1-2 and two TPA 1-3 and 1-4, and the second TPA 1-4 is made on the basis of the CCD image sensor with line wrapping", and the first TPA 1-3 - based device (CCD) matrix with p is a rule-HR shift", consisting of serially connected charge-coupled photodetector section 1-3-1-1, memory sections 1-3-1-2, the output register 1-3-1-3 and conversion unit charge voltage (BPSN) 1-3-1-4, and part of TPA 1-3 also includes a generator 1-3-2 control pulses, consisting of a temporary controller 1-3-2-1, the first level Converter (PU) 1-3-2-2, the second PU 1-3-2-3 and third PU 1-3-2-4, the first temporary output controller connected to the input of PU 1-3-2-2, the second output of the temporary controller to the input of PU 1-3-2-4, and the third output time controller to the clock input PHI 1-3-2-5, the control input of which is connected to the fourth output of the temporary controller, the fifth output of which is connected to the clock input of the signal processor 1-3-3, the control output which is connected to the control input of the temporary controller; the control inputs of photodetecting section 1-3-1-1 CCD is connected to the output PU 1-3-2-2, the control inputs of the output register 1-3-1-3 matrix CCD to the output of the PU 1-3-2-4, and the control inputs of the memory sections 1-3-1-2 CCD - through PU 1-3-2-3 to release PHI 1-3-2-5; output BPSN 1-3-1-4 CCD is connected to the information input of the signal processor 1-3-3, "video" which is the output video TPA 1-3, the first output beam splitter 1-2 camera is the output image of General view and optically connected with photomixing of Pervov the TPA 1-3, and the second output of the beam splitter 1-2 output image enlarged and optically connected with photomixing second TPA 1-4; part of the camera also includes a block 1-5 guidance and connected in series selector, 1-6 clock and shaper 1-7 signal frame, and the power controller designed for spatial positioning TPA 1-4 and comprising a first actuator 1-5-1 (drive horizontally), kinematically associated with the first position sensor 1-5-2, and the second drive 1-5-3 (drive vertically), kinematically associated with the second position sensor 1-5-4, while the output of the first position sensor is the first output block controller and the output of the second position sensor, the second output unit controller output TPA 1-3 is connected to the input of the selector, 1-6 clock, a first control input of the shaper 1-7 signal frame connected to the first output block controller and the second control input to the second output unit guidance, the yield of TPA 1-3 is the output of "video 1" video cameras, TPA output 1-4 output "video 2" camera, and the output of the signal shaper frame - signal output "frame" cameras; at the receiving side of the television system the computer is located at position 3, and on the motherboard of a computer in extension connector at the set fee video and between the receiving and transmitting sides padded line at position 2, consisting of five wires of the cable and providing a connection of the output signals video 1, video 2" and "frame" cameras to the corresponding inputs on your computer, and output signals for commands pointing "Right/Left" and "Up/Down" on the computer with inputs these signals to the actuators 1-5-1 and 1-5-3 in the camera, respectively.

A beam splitter 1-2, as in the prototype, contains consistently spaced and optically coupled translucent mirror 1-2-1, a collective lens 1-2-2 reflecting mirror 1-2-3 and additional lens 1-2-4, and the input of the beam splitter optically connected to the input of the semitransparent mirror 1-2-1, the first output of the beam splitter with the output lens 1-2-4, and the second output of the beam splitter to the second output mirror 1-2-1.

If the photodetectors both TPA prototype are CCD with line transfer, the claimed solution to this sensor is used only in the second TPA 1-4.

In the first TPA 1-3 as the sensor used, the CCD (see figure 3), with the organization "line-personnel transfer [3, p.42]. In the foreign literature, for example [4, s-137], such a CCD is called "manpower-line switch.

The system management transfer in the CCD can be two-phase, Tr is faznoi or four according to the technological features of manufacturing the photodetector.

The implementation of the string-frame transfer sensor means that the crystal matrix CCD prototype with the organization "line wrap", added memory section 1-3-1-2, which is located between the photodetecting section 1-3-1-1 and output register 1-3-1-3.

The photodetector section 1-3-1-1 new CCD has a typical design for CCD with line wrap. It allows accumulating the charge packets in the photosensitive elements such as photodiodes arranged in columns. In close proximity to each column of the photodiodes is insensitive to light vertical CCD register, separated from the photodiodes a photo chopper. During the accumulation of the charge packets in the photodiodes on the photo chopper fed a low voltage level, providing a potential barrier between the photodiode and the vertical CCD register. At the end of the accumulation on the photo chopper short-term high level is applied voltage, allowing the transfer of charge packets from the photodiodes in the potential well formed in the vertical CCD registers.

The photodetector section 1-3-1-1 as the prototype, equipped with an electronic shutter that performs electronic sensitivity adjustment via control of the accumulation time of the charge carrier during the recruitment period is.

The charge packets from the vertical CCD register section 1-3-1-1 in the interval interval reverse the vertical scan are transferred to section 1-3-1-2, and from there to the next forward stroke on the frame line is transferred to the output register 1-3-1-3. Each charge line of the bitmap image is then read through BPSN 1-3-1-4, forming the output video of the photodetector electrical signal.

Changes and structural scheme of the TPA 1-3 of the proposed solution (see figure 2). Enter in the composition of the generator 1-3-2 control pulse additional pulse shaper (PHI) 1-3-2-5 is used to implement the logical operation control section memory 1-3-1-2 order of summation in her charge packets generated in the photodetecting section 1-3-1-1.

As applied to a three phase system management photodetector structural diagram PHI 1-3-2-5 can be performed according to the solution proposed in figure 4. It contains the following digital blocks: counter duration of accumulation, the first and second element "And"element "OR", and the first and second elements "NOT".

It is obvious that the device PHI 1-3-2-5 can be performed as part of a large integrated circuit (LSI) temporary controller 1-3-2-1.

On the control input PHI 1-3-2-5 served with the third output of the temporary controller 1-3-2-1 human synchronal the s - XI (see figa), which are further taken to the counting input of the counter duration of accumulation. The capacity of the counter is n frames, i.e. PTtoand the generated signal should with a period of (n+1)Tto(see figb). At the output of the counter, this signal is further delayed by the value of the duration of XI (see figv).

The output signal of the counter at a different scale presents on figa. If the clock input PHI 1-3-2-5 from the third release time controller 1-3-2-1 served a three-phase pulse sequence (see figb...g), then exit FI 1-3-2-5 will be shot converted sequence, as shown respectively Figg...J.

As a result, the photodetector TPA 1-3 charge packets accumulated in the section 1-3-1-1, are formed in the memory sections 1-3-1-2. Therefore, in the composite video signal at the output of TPA 1-3 signal-to-noise ratio is increased n times, and the image signal will be followed with a period of (n+1)Tto, i.e. pass on the value of the time interval PTtoas shown on figs.

Assume that the attenuation of the light in the beam splitter 1-2 for the photodetector TPA 1-3 is carried out with a ratio of 1/10. Then n=10 and the electrical circuit of the counter duration of accumulation can be performed according to the shown in figure 5 solution using domestic chip series C. For the realization of the purpose of the counter will need two buildings CIE, one case KTM, one case KLA and one case KLN.

Unit 1-5 guidance is designed to implement spatial positioning TPA 1-4. The electric circuit unit 1-5 can be implemented on the basis of technical solutions Using optocoupler HSSR-7111 to control the reversal of the AC motor", published online at [5].

Product HSSR-7111 is a single - pole normally open optocoupler with output stage of the power MOS-FET has a very low resistance in the on state, and performs exactly like a semiconductor relay. The maximum value of the resistance of the load circuit of the optocoupler HSSR-7111 in the on state is 1 Ohm and the maximum load current depending on the scheme and the inclusion is 0.8 Amps or twice (1.6 Amps).

Consider a block 1-5 guidance (see Fig), which performed on four optocouplers HSSR designated as VT1...VT4. We assume that management guidance is carried out by teams in accordance with table 1.

Table 1
The command nameThe mode designatorThe signal
"Control l the "Right,""+U"
Left"-U"
Management "vertical""Up""+U"
Down"-U"

It should be noted that supplied to the camera from a computer via the communication signals of the control unit 1-5 guidance are constant voltages of positive or negative polarity value (5...30) V, measured relative to the wire. In the absence of control commands these stresses is also missing. So optocouplers VT1...VT4 are opened and the motors M1 and M2 is deenergized.

Let the line on the block 1-5 guidance team is doing "the Running horizontally" - "Right". Then the optocoupler VT2 is closed, and the motor M1 is connected to a source of alternating voltage ~U and starts to rotate.

If instead of this team will be the team Management horizontal - Left, then closes the optocoupler VT1, and the motor M1 rotates in the other direction.

Same goes for commands "Running vertically. If you filed your team Up, then closes the optocoupler VT4 and rotates the motor M2. When a VM is a hundred it will be filed with the command "Left", then closes the optocoupler VT3, and the motor M2 changes the direction of rotation.

Limit switches SF1 SF4...provide the necessary limits positioning TPA 1-4 horizontally and vertically.

As in the block pointing prototype, the position sensors 1-5-2 and 1-5-4 made on the basis of variable resistors RPxRPyhaving a linear dependence of the resistance changes of the angle of rotation. Fixed resistors Rx*and Ry*required to perform a setup operation for precise positioning.

The input lens 1-1, a beam splitter 1-2 and shaper 1-7 signal frame cameras on purpose and circuit performance does not differ from the corresponding blocks of the prototype.

Note that to increase the geometric dimensions of the space, which is in the field of view of closed-circuit television system, it is desirable that the input lens 1-1 had a wide angle field of view when the standard value of the aspect ratio of 4/3. For example, domestic lens "Zenithar-M 2,8/16"relating to optics type "Fish eye", can provide for the diagonal of photomeson sensor 1-3, equal to 1/3 inch, the field of view horizontally not less than 100 angular degrees.

The frame size for lens "Zenithar-M 2,8/16" is 24×36 mm, So the multiplicity scaling Tomoptical image, which is constituent to the second output of the beam splitter, equal to:

Km=243,6=364,8=6,6.

The computer 3 is designed to perform the following operations:

transform first (video 1) and second ("video 2") of the input analog image signals transmitted from the cameras to digital video signals;

- input digital video signal "video 1" in the RAM period PTtoin and out of her with a period of Ttowhere Tto- frame duration, n is the number of summed frames;

- input/output digital video signal "video 2" with a period of Tto,

- team-building Management guidance" and "Select video mode";

- mixing the output digital video signal "video 1" to the signal "frame",

- frame-to-frame comparison of the output digital video signal "video 2" and the signal "alarm"

- switching and playback of digital video signals in the Image of General view and zoomed fragment".

Characteristics of the control signals associated with the command Control over, was presented above (see table 1).

Characteristics of the control signals associated with the command In the wood video mode", presented in table 2.

Table 2
The command nameThe mode designatorThe signal
"Select video mode""The image of General view""1"
"The image is enlarged fragment""0"

All signal operations and control commands are executed in accordance with an application computer program, which is an integral part of the development of this television system.

It is obvious that the flow control commands can be performed from the computer keyboard and/or using a computer mouse.

Note that the command "Select video mode" is distributed within a computer, and so is the team's internal use. Team Management over external command, because it is designed to control the operation of the cameras.

Let us note another important difference between the proposed solutions closed-circuit television system from the prototype. The function of the switching unit and the function of motion detection is now performed directly in the computer.

Vyhodnocovanie the image signals video 1 and video 2 in this decision is closely synchronized among themselves, and light (energy) sensitivity aligned and almost the same.

Therefore, if necessary in the inventive solution according to the method of PIP1(1PIP is the English acronym for "picture in picture" or "picture in picture") may be additionally formed a composite image containing the image of the "video 1", box ("box") which is partially transferred to the image "video 2". This option can be very useful for the operator closed-circuit television system, saving him time to make the right decision about a possible violation.

Developed for the claimed system application computer program is highly desirable to implement and correction "pincushion" geometrical distortion of the input wide angle lens-type "Fish eye" in the analog image signals video 1 and video 2, which forms the camera.

Closed-circuit television system (see figure 1) works as follows. Select the operation of the inventive system, as in the prototype, two modes:

"The selection of the protected object and situation analysis" (mode 1);

"Alarm" (mode 2).

Regardless of the mode of operation of the television system, as in the prototype, the input optical image along an optical path: the input lens 1-1, polypros acne mirror 1-2-1, collective lens 1-2-2 reflecting mirror 1-2-3, additional lens 1-2-4 projected onto photomixing first TPA 1-3.

At the same time increased (in accordance with multiplicity scaling Km of beam splitter 1-2) slice of this image, the boundaries of which are determined by the e-frame, on the other optical path: the input lens 1-1, translucent mirror 1-2-1 projected onto photomixing second TPA 1-4.

Note that the multiplicity scaling Km of beam splitter 1-2, as in the prototype, is determined by the ratio of the width (height) of the optical input frame lens 1-1 to the respective sides of photomeson second TPA 1-4.

In the photoelectric conversion of the optical image of each of the TPA is then converted into the corresponding composite video signals. We denote the composite video output TPA 1-3 as "video 1", and the composite video output TPA 1-4 - "video 2".

Compared with the prototype of the composite video signal "video 1" (see figs) followed with a period of (n+1)Ttobut it n times increased signal-to-noise ratio.

As in the prototype, the selector 1-6 clock selects the composite video signal "video 2" lowercase and personnel pulses and shaper 1-7 signal frame produces the output signal of a rectangular frame with a format (a×b).

Then about the analog video signal simultaneously transmitted from the camera 1 through the communication line 2 on the receiving end of a television system, where do in the computer 3.

On Board video computer analog video signals video 1 and video 2 by means of analog-to-digital conversion (ADC) are digital signals.

The digital video signal "video 1" is written to the memory block that stores within n frames. Updating information in the RAM occurs with a period of (n+1)Ttoand reading the video signal "video 1" from memory - with a period of Tto. Therefore, in the output digital video signal "video 1" informative gaps in time will be eliminated.

The digital video signal "video 2" is written into another block of RAM, but the update is going on with period Tto. Thanks to this memory, digital video, "video 2" may be subjected to the procedure frame-to-frame comparison.

Performing on-Board video computer this frame-to-frame comparison algorithm given built-in motion detector enables for a given value of the threshold to capture the moment of violation of the controlled object and the signal "alarm".

When the power supply to the TV system the default begins to operate in mode 1, and the computer creates a logical signal "1" of the Image of General view".

Therefore, on-Board video of the computer is a digital mixed audio is the W signal "video 1" to the signal e of the frame, as a result, switching of video signals, namely the signal "video 1" with "imposed" on him frame is reproduced on the screen of the computer monitor.

Recall that the position of the frame within the active portion of the raster is determined depending on the position of the sliders of potentiometers RPxRPy(position sensors 1-5-2 and 1-5-4)installed in unit 1-5 guidance. At the same time TPA 1-4 generates a video signal optically enlarged "vnutriramochnym" image.

Note that the e-frame notes on the image area of increased interest for the operator, and he was feeding from your computer to the camera team Management "horizontally" - "Right/Left" and "Control of vertical - Up/Down, can remotely install the frame on any area of the observed image.

The quality of this image in the night time is obviously higher than that of the prototype, due to the increase in the signal/noise ratio in the charge summation of n frames accumulation in the CCD.

After the operator via e-frame select the area to be protected is automatically initialized motion detection, performed on-Board video of the computer.

Further, if at some point in the protected zone is the offender, (see figa or Figo), the motion detector will record the change in the video is ignal, and the "alarm" signal will carry out the switching of video signals, and transfer television system in mode 2 operation.

The result on the screen of the computer monitor is played "open" on the whole raster vnutriramochnym image with magnification zoom Km (see figb).

If on-Board video computer provided for forming a combined image signal, the operator can move the television system in mode 3 (PIP) and to control the generated synthesized image as shown in figb.

After the adoption of the statement of decision on the fact of registration of the television system disorders in the protected area system should be re-translated in mode 1 operation by operator push alarm reset.

In relation to the prototype, the increase in light sensitivity, and hence the image quality of the General form, is determined by the number n summable frame accumulation. The value of n may be limited only by the dynamics of the event on the object that you want to see the operator, but they should not be reported as an alarm.

Given that the night time level possible and permissible changes on the protected object is extremely small, the gain in sensitivity can be quite large, for example, up to 50 times. Tog is and the choice of a value for n will be limited by the growth of the dark component in the image signal of the CCD matrix.

Currently, all units offer solutions developed or may be developed by the domestic industry, therefore, should be considered the present invention corresponding to the requirement of industrial application.

SOURCES of INFORMATION

1. Patent 2231123 of the Russian Federation, IPC G08B 13/196, H04N 7/18. Closed-circuit television system. / Vsmall, Wassalamu // BI - 2004. No. 17.

2. The quick installation guide product Aver TV 307 from company AverMedia TECHNOLOGIES, Inc. (Taiwan).

3. Nikitin V.V., Sycolin A.K. TV in physical protection systems. - S.-Pb.: Etu "LETI", 2001.

4. Vlado Our Damjanovski. STU. The Bible cameras, Digital and network technologies. / Translation from English. M.: OOO "AI-es-es Press, 2006.

5. www.avagotech.com

1. Closed-circuit television system, which contains on the transmission side of the television camera (camera), consisting of consecutive and optically coupled input lens, beam splitter, two sensors of a television signal (TPA)based on a matrix of charge-coupled devices (CCD), block laying and serially connected clock selector and driver signal frame, and the first output beam splitter is the output of "image of General view and optically connected with photomixing first sensor of a television signal (the first TPA), and the second is ihod of the beam splitter is the output of "image enlarged and optically connected with photomixing second TPA, unit guidance, intended for realization of the spatial positioning of the second TPA, and consisting of a first drive kinematically associated with the first position sensor, and the second drive kinematically associated with the second position sensor, and the output of the first position sensor is the first output unit controller and the output of the second position sensor, the second output unit guidance, the output of the first CSD is connected to the input of the selector pulses, a first control input of the shaper signal frame connected to the first output block controller and the second control input to the second output unit controller and the output of the first TPA is the output video 1" cameras, the output of the second TPA - out video 2 video cameras, and the output of the signal shaper frame - signal output "frame" cameras, at the receiving side of the television system is a personal computer, and between the camera and the computer communication line consisting of five of the cable strands, three of which are connected to output video 1 camera input video 1" on the computer and respectively output signals for commands pointing "Right/Left" and "Up/Down" on the computer with inputs these signals to the camera, different the fact that the first TPA cameras made on the basis of Mat the Itza CCD with line personnel transfer and the second CAD - based matrix CCD with line wrapping", in the first TPA additionally introduced shaper pulse (PHI)providing in the memory sections CCD summation of the charge packets generated in the photodetecting section, while the other two cable conductors of the communication line is the connection of the output signals "video 2" and "frame" cameras to the corresponding inputs on the computer, and in an expansion slot on the motherboard of a computer optional video card is installed, coordinated through the channels I/o, control and power bus of a computer and intended for converting first and second input analog video signal into digital form, the input digital video signal "video 1" in the RAM period PTtoin and out of her with a period of Ttowhere Tto- frame duration, n is the number of summed frames, input/output digital video signal "video 2" with a period of Tto, complete mixing of the output digital video signal "video 1" to the signal "frame", perform frame-to-frame comparison of the output digital video signal "video 2" and the signal "alarm" detection threshold interframe difference, and video output video Board is the output of the image signal of a television system.

2. Television system according to claim 1, characterized in that the beam splitter cameras contains consistently spaced and optically coupled semi-transparent mirror, a collective lens, a reflecting mirror and an extra lens, and the input of the beam splitter optically connected to the input of the semitransparent mirror, the first output of the beam splitter with the output of the additional lens and the second output of the beam splitter to the second output mirror.

3. Television system according to claim 1, characterized in that installs in an expansion slot on the motherboard of a computer video card generates an additional signal "window", as it is a video signal of a combined image, components of which are digital video signals video 1 and video 2.

4. Television system according to claim 1, wherein the input lens of the camera uses a wide-angle lens, and the computer corrects the geometric distortion introduced by the lens into an analog image signals video 1 and video 2.

5. Television system according to claim 1 or claim 2, or claim 3, or claim 4, characterized in that the pulse shaper (PHI) of the first CSD cameras as part of a large integrated circuit (LSI) temporary controller.



 

Same patents:

FIELD: information technology.

SUBSTANCE: method includes a setup step where an operator creates a model of the environment by determining the number of cells corresponding to regions of said environment, and then creates a "cell/sensor" connection by defining for each sensor at least one possible position associated with at least one cell. For each position, the operator assigns the sensor a control estimate for the associated cell. The method also includes a working step where a control system, in order to execute a surveillance function, finds those sensors that can be used to execute the requested surveillance function and control said sensors based on control estimates and the "cell/sensor" connections.

EFFECT: high reliability of surveillance systems, particularly video surveillance systems, by providing dynamic adaptation each time a sensor cannot be used by the system.

9 cl, 6 dwg

FIELD: information technology.

SUBSTANCE: passenger carriage video monitoring system has at least one video camera mounted such that it is capable of scanning at least part of the interior of the passenger carriage. The video camera is connected to a video recorder to which a monitoring and control unit is reversibly connected. The video recorder can be connected to a data transmission system and a monitor mounted in the guard's compartment.

EFFECT: safer transportation of passengers.

7 cl

FIELD: information technology.

SUBSTANCE: apparatus for detecting and monitoring hazard with a built-in display system is meant for use in a public safety system and warning on emergency situations, adapted for detecting and identifying hazards in the surrounding medium, as well as displaying information of interest relating to the hazard or other public information.

EFFECT: detecting hazard and endangering activities at early stages thereof.

25 cl, 3 dwg

FIELD: physics.

SUBSTANCE: system has a sensor unit 1, a signalling unit 2, a video surveillance unit 3, an actuating device unit 4, first 5 and second 6 modems, an information processing and display unit 7, a radio channel 8, a switching unit 9, a video information superposition unit 10, a display unit 11, audio signal transmitting 12 and receiving 13 units, a video peephole 14, a video signal converter 15 and a low frequency amplifier with a microphone 16 (i=1, 2,…, n). The first modem 5 has driving generators 17.i, a first OR logic element 18, a modulating function former 19, an amplitude modulator 20, a modulating code former 21, a phase-shift modulator 22, a power amplifier 23 and a transmitting antenna 24.

EFFECT: high reliability of security and surveillance of residential facilities and other secure objects through use of a radio channel using signals with combined amplitude modulation and phase-shift modulation.

3 dwg

FIELD: information technology.

SUBSTANCE: system is equipped with two memory modules, two analysis and recognition units, one having a function for analysing and comparing records from the first frame to the last, and the other having a function for analysing and comparing records from the last frame to the first, and a second video monitor, where each television camera is connected through a data network to the corresponding analysis and recognition unit which is connected to the corresponding memory module and the video monitor. Television cameras are arranged such that they can be simultaneously rotated in the horizontal plane by a rotary drive. Optical axes of the television cameras lies on a straight line and are directed oppositely. Motion detectors lie on the security perimeter. The output of each motion detector is connected to the corresponding pulse former, whose output is connected to the input of an OR element, whose output is connected to control inputs of the television cameras and the rotary drive. Efficiency of the security television system lies in elimination of blind spots inside the perimeter of the secured object, which prevents intrusion of the facility.

EFFECT: high efficiency of inspecting a secure territory on the perimeter and avoiding intrusion, achieved due to that the security television system comprises two television cameras connected through a data network to a video monitor and motion detectors connected to a signalling unit.

7 dwg

FIELD: physics.

SUBSTANCE: in the method, using a video surveillance subsystem with video cameras and thermal imagers mounted along the linear section of a boundary with alternation, using backlighting by backlight lasers, as well as an information collecting and processing subsystem, information is continuously transmitted from the thermal imagers to a computer and a monitor connected to said thermal imagers, and simultaneously recorded in a memory unit, for example a computer hard disk. Vibration detectors having detecting elements and signal processing units are mounted on the posts of the enclosure.

EFFECT: reduced cost of the equipment used while ensuring video surveillance at night and during bad visibility, ensuring detection of optical devices directed towards a secure facility.

2 cl, 6 dwg

FIELD: information technologies.

SUBSTANCE: video surveillance is carried out inside an object as a result of the fact that video equipment is placed, for instance, at least one digital camera and/or one video camera, in order to observe the inner space of the trading equipment object, which is not a room, and the field of view of video equipment is directed so that it covers both items located inside the object and the inner area of the most probable opening of the object, for instance, a cover or a door.

EFFECT: reduced possibility of penetration into trading equipment.

37 cl, 12 dwg

FIELD: information technology.

SUBSTANCE: camera forms a background image containing at least part of the field of vision of the camera; image fragments are arranged into a composite background image; the image is received in real time of the current field of vision of the camera; the image of the current field of vision of the camera is placed in real time into the background image formed by the camera; the position of the image in the background image correlated in real time and the position of the image, obtained in real time, in the field of vision of the camera is determined, wherein at the determination step, moving objects, new objects and disappearing objects are detected and selected in the field of vision of the camera, and if a moving or new object appears in the field of vision of the camera during observation, it is added to the background image in real time; the position of the image in the background image is measured in real time based on the change in the current field of vision of the camera. The camera is also fitted with an illumination device for creating an illuminating beam and a protective module for detecting presence of objects lying in close proximity to the illumination device, and switching off the illumination beam.

EFFECT: wider range of technical capabilities of video surveillance systems.

39 cl, 11 dwg

FIELD: radio engineering.

SUBSTANCE: television chamber comprises the second peak detector, an ADC, a generator of accumulation length, a gate multivibrator, the first and second RS-triggers, an inverter, an "AND" element and an "OR" element, new connections of these blocks with remaining blocks of the television chamber, and three additional cable strands are introduced into a line of connection between instruments of a transmitting and a receiving side of the television system.

EFFECT: expansion of functional capabilities of the security television system by provision of an image of a damage zone to the operator with high signal-noise ratio.

5 cl, 6 dwg

FIELD: information technology.

SUBSTANCE: television camera includes a peak detector, an analogue-to-digital converter, an interval former, a univibrator, RS flip-flops which, during the given interval, enable measurement of the current video signal value, conversion into digital form and recording said value at a defined moment in time in the counter of the interval former. Further, the video camera switches to a mode where the accumulation interval is set optimum based on the criterion of maximum signal-to-noise ratio.

EFFECT: providing visual monitoring of the situation in a zone of disturbance after detection of moving low-contrast objects due a low signal-to-noise ratio in a video signal at the monitor input.

3 dwg

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

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

FIELD: railway transport; signaling and communication.

SUBSTANCE: proposed system contains U-shaped carrying installed over track. Optoelectronic car counter, train beginning pickup, wheel counter, video camera of car left side and video camera of car right side are mounted on vertical supports of carrying structure. Video camera of car roof is secured on carrying structure crossmember and searchlights are mounted on vertical supports and on crossmember. Outputs of pickups are coupled through indicator and matching unit with input of workstation system unit. Outputs of video cameras are coupled with corresponding video inputs of workstation system unit. Workstation is made for displaying image of passing train on computer monitor screen in real time simultaneously from three cameras under POLYSCREEN conditions, and also for full-screen viewing of train from one of chosen video cameras, recording of compressed video from three video cameras of hard disk, reproducing of video record and forming of video archive.

EFFECT: improved on-line detection of commercial troubles on rolling stock.

2 dwg

FIELD: property protection technologies.

SUBSTANCE: alarm signaling device is used to detect an attempt of unsanctioned action against protected object and appropriate alarm message is generated with identification signs and location parameters of current alarm signaling device. Then by radio alarm message is sent to adjacent alarm signaling device, and relayed further to other alarm signaling devices until received by user equipment. On receipt identification signs and position parameters of source alarm signaling device are selected. Using said position parameters flight route is set and unmanned aircraft is launched, made with possible horizontal movement according to set program, video surveillance of segments of protected object, compression and transmission of received video frames by radio to user equipment. Previously, in training mode, launches of unmanned aircraft are performed along radial routes under route angles, matching shortest distances from user equipment to alarm signaling devices position points, and series of received video frames are recorded to memory of onboard complex of aircraft. When receiving an alarm message from one of alarm signaling devices commands for controlling flight of aircraft to it along set route and commands for stabilizing it according to flight parameters are formed by combined correlation processing onboard the aircraft of current and prerecorded video image frames, appropriate for radial flight route of unmanned aircraft to current alarm signaling device.

EFFECT: higher efficiency, broader functional capabilities.

6 cl, 6 dwg

FIELD: television cameras, working under conditions of complex lighting and/or complex brightness of objects, when simultaneously strongly and weakly lit objects and/or objects with sharp difference in brightness may be in camera field of view.

SUBSTANCE: components of combined image are formed in charge form on targets of first and second television sensors with various exposition times, optimal for each one of transferred scene fragments. Due to that, in output image of television camera, bright and light parts are transferred same as in prototype, without limitation of white, while dark and/or low light parts are transferred with high signal/noise ratio, and dynamic range of brightness degrees is therefore extended.

EFFECT: extended dynamic range of brightness degrees for control objects, transferred in combined image outside the "window" due to increase of signal/noise ratio for dark and/or low light parts of objects.

6 cl, 4 dwg

FIELD: analysis of television images, possible use in video surveillance systems.

SUBSTANCE: in accordance to the invention, a set of digital video data from first source, representing first image, is identified as standard video data of first source. Then a second set of video data is read, which represents current image. Difference ratio is computed using standard digital video data and current set of digital video data. If difference ratio exceeds a threshold, a query is shown to system user on the display to receive a response about whether current digital video data belong to identified source, or originate from new source. If response points at new source, then current set of digital video data is dispatched for storage into second memory cell, connected to second source. Then the current set of digital video data is identified as standard digital video data for second source.

EFFECT: division of digital video data outputted by several sources.

5 cl, 9 dwg

FIELD: railway transport.

SUBSTANCE: invention relates to remote control of sizes of loads carried by rail. Method includes checking of observation of obstruction clearance limits, when train enters check zone, by means of optoelectronic sensors and determining whether loads lie within gauge limits when train passes check zone formed by optical limits of clearance gate sensors, comparing loading gauges with required train gauges and video observation of passing train. Set of two pairs of optoelectronic sensors "radiator-receiver" are installed in each plane under checking, time of overlapping of optical channel is measured as well as speed of train, and length violation of gauge is calculated. At least two radiation receivers are installed in plane under checking at a distance, and radiators mated with receivers are installed close to each other as possible to form optical axes arranged at angle relative to each other. Out-of-gauge coordinates are determined and obtained information is transmitted by communication channels, being visualized on screen of videomonitor, and attention of operator is drawn to violation, alarm signal is sent and response of operator is recorded. Device contains speed meter, radiators, receivers, computing device, videomonitor and operator response detector.

EFFECT: improved reliability.

3 cl, 1 dwg

FIELD: observation of moving objects.

SUBSTANCE: method includes using movement sensors, capable of recording two-dimensional distributions of intensity in form of images, where sensors are positioned with known spatial orientation, making it possible to perform simultaneous observation of one and the same scene, periodical query of sensors is performed during whole time period after their enabling, processing and analysis of data received from sensors is performed, which constitutes series of images, and output signal is generated in case of detection of three-dimensional moving object and determining of its spatial position, which signal is injected into output device.

EFFECT: increased trustworthiness when determining spatial position of a moving object.

3 cl, 1 dwg

Video camera // 2336656

FIELD: physics, video technology.

SUBSTANCE: camera includes image sensor module, suitable objective lens, particularly wide-angle lens, and holder. The lens features threading which, via the holder and elastic spacing piece, is screwed to match thread of image sensor, so that the thread performs two functions, namely function of image sensor module connection by the lens, and function of focusing by adjusting optic distance between the image sensor module and the lens. Lens thread passes through traverse holes in the holder and elastic spacing piece in the form of elastic ring positioned between the lens and holder. Various vision directions of image sensor module can be adjusted by rotation element.

EFFECT: camera suitable for house intercom, with more flat and compact design and improved functional capability.

22 cl, 12 dwg

FIELD: physics.

SUBSTANCE: method of determining liquid cargo weight in railway tanks consists in measuring liquid cargo level by thermovision image of tank lateral surface and calculating cargo volume and weight. It differs from known methods in that, natural sheet or shipping documents for the tank are used to determine tank type, declared cargo type and weight. Tank lateral surface part thermovision fragment corresponding to filled tank section is used to determine filled cargo temperature, and liquid cargo weight is calculated with due allowance for declared type and specific weight at measured temperature and tank type. Tank is weighed to subtract empty tank weight from measured weight to determine actual weight of liquid cargo. Now, said weight is compared with declared weight to conclude on commercial safety of cargo.

EFFECT: higher validity of cargo commercial safety control.

2 cl, 1 dwg

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