CN107545558A - Alternating current voltage samples conditioning system - Google Patents

Abstract

The present invention relates to a kind of alternating current voltage to sample conditioning system, including voltage sample circuit, civil power access interface and voltage signal conditioning circuit, civil power access interface is used for the Alternating Current Power Supply signal for receiving line input, voltage sample circuit is connected with the A phase lines in line, B phase lines and C phase lines, for being sampled respectively to the voltage signal in A phase lines, B phase lines and C phase lines, voltage signal conditioning circuit is connected with voltage sample circuit, for carrying out signal condition to sampling voltage.By means of the invention it is possible to the alternating current voltage of theatre effectively sample and nurse one's health.

Description

Alternating current voltage samples conditioning system

Technical field

The present invention relates to alternating current detection field, more particularly to a kind of alternating current voltage sampling conditioning system System.

Background technology

Due to the continuous development of camcorder technology, high-resolution, the microcam of small volume are more and more general And spectators only need to carry the various mobile terminals with camera can complete high-resolution image Record or image taking, so, carry out piracy and take on the sly very easy, huge warp is caused to relevant industry Ji loss.

Piracy, which is taken on the sly, to be typically occurred in cinema, theater, arenas, projection room or theatre, operation Side is prevailing in order to avoid the behavior of taking on the sly, it will usually arranges special staff to be arranged in auditorium Around, one is arranged every fixed intervals, with the manner behavior of spectators near naked-eye observation, once send out Existing spectators' hand-held mobile terminal carries out the recording of image or the shooting of photo, goes forward to prevent or adopt immediately Alerted with hand-held infrared emission pen, so as to interrupt the behavior of taking on the sly of spectators.

However, there is the drawbacks of inherent in this artificial anti-mode taken on the sly：First, if spectators' dishes served at a feast Product is larger, then needs to arrange for many staff and carry out field monitor, it means that need substantial amounts of people Work cost；Secondly, the mode efficiency of staff's naked eyes scanning is low, and the mode of direct surveillance Easily the person of taking on the sly of some corner locations is let off in generation because of burnout；Finally, set near spectators The mode of staff brings discomfort to the spectators of normal viewing performance, have impact on them and appreciates performance Mood.

As can be seen here, the artificial anti-mode taken on the sly has inborn deficiency, in order to overcome above-mentioned drawback, The anti-operation cost taken on the sly is reduced, improves the anti-operating efficiency taken on the sly, operator always searches for electronics The anti-mode taken on the sly carries out on-site supervision, and anti-take on the sly of electronics has two kinds of developing direction, and one kind is in spectators Made an issue of on hand-held mobile terminal, when mobile terminal is shot, automatic detection is taken on the sly behavior, but this Kind mode may be because that the person of taking on the sly is avoided to the selection of mobile terminal, and another kind is at the scene of taking on the sly Electronic jamming device is disposed, this mode can avoid evading for the person of taking on the sly.

The existing anti-electronic jamming device taken on the sly is that a kind of infrared facility is placed in into curtain or dance The back side of platform, infrared facility sends the sightless infrared ray of human eye, if the person of taking on the sly is moving Terminal or video camera are shot, then infrared ray will disturb the video camera imaging of the person of taking on the sly, cause the person of taking on the sly to obtain The image or lower picture quality obtained, can not commercially sell and be propagated on network, so as to have Effect safeguards copyright interest.

But this mode needs to launch infrared ray always, and the transmitting of infrared ray be it is large-scale, Need all to launch infrared ray from each position, cost is higher and poor feasibility.Therefore the electronics at scene is prevented Equipment of taking on the sly also needs to find other break through direction.

Therefore, the present invention proposes a kind of anti-electronic equipment taken on the sly in new scene, can be by existing The behavioral value of spectators and scene is determined by the parameter extraction to site environment in auditorium It whether there is the person of taking on the sly in auditorium, and the position where the person of taking on the sly can be positioned in time, with It is easy to take corresponding orientation warning measure, reminds the person of taking on the sly to abandon the behavior of taking on the sly.

The content of the invention

In order to solve the above problems, the invention provides a kind of alternating current voltage to sample conditioning system, Site setup auditorium image capture device completes the extraction to auditorium image, introduces at various images Reason equipment and image analysis equipment judge to whether there is the suspicious person of taking on the sly in auditorium image exist In the case of the suspicious person of taking on the sly, the numbering at seat, then also exists where extracting the suspicious person of taking on the sly Scene is detected in real time to ambient parameter or current performance content, with the letter according to the suspicious person of taking on the sly Breath and Site Detection result determine really the person of taking on the sly, it is even more important that establish it is a set of being capable of basis The person of taking on the sly position is oriented the mechanism of prompting, so as to completely automatically realize the electronic type to the person of taking on the sly Detection and warning.

According to an aspect of the present invention, there is provided a kind of alternating current voltage samples conditioning system, the system System includes voltage sample circuit, civil power access interface and voltage signal conditioning circuit, civil power access interface For receiving the Alternating Current Power Supply signal of line input, voltage sample circuit and the A in line Phase line, B phase lines connect with C phase lines, for A phase lines, B phase lines and C phase lines Voltage signal in road is sampled respectively, and voltage signal conditioning circuit is connected with voltage sample circuit, For carrying out signal condition to sampling voltage.

More specifically, in the alternating current voltage samples conditioning system, including：Remote control equipment, if The roof position directly over theatre stage is put, for being connected with AVR32 chips to receive AVR32 The driving control signal that chip is sent, and driving control signal is parsed to determine that targeted seat is compiled Number, numbered based on targeted seat and determine remote signal；Bass caution device, on each spectators seat One is set, including receiver of remote-control sytem, bass play chip and play controlling switch, receiver of remote-control sytem For receiving remote signal, play controlling switch and play chip company with receiver of remote-control sytem and bass respectively Connect, chip is played to carry out bass warning operation for starting bass based on remote signal；Wherein, it is low Sound, which plays chip, includes speech memory, for prestoring the phonetic warning text related to no photographing Part；Timer, it is arranged in the Background control room of theatre, for providing timing signal；Environment is bright Sensing equipment is spent, theatre roof middle position is arranged on, for sensing the reality of theatre internal environment Shi Liangdu as real time environment brightness to export；Face brightness detection device, after being arranged on theatre In platform control room, and human face region division equipment connection is with everyone face image of reception and its is corresponding Seat numbering, the gray value for each pixel based on everyone face image calculates each The brightness of image of face subgraph as real-time face brightness to export；Brightness deviates from detection device, if Put in the Background control room of theatre, it is bright with timer, ambient brightness detection device and face respectively Detection device connection is spent, for receiving real time environment brightness and receiving the reality of everyone face image When face brightness, for everyone face image, when its real-time face brightness and real time environment brightness When the time deviated from reaches predetermined time period threshold value, using seat numbering corresponding to face subgraph as Targeted seat numbering output；AVR32 chips, it is arranged in the Background control room of theatre, with brightness Connected away from detection device, the driving of targeted seat numbering is included for being sent based on targeted seat numbering Control signal；High-definition camera, theatre roof middle position is arranged on, for based on pre-set image Acquisition rate singing in antiphonal style theater stage opposite carries out sequential image acquisition with continuous high definition on output time Image；Brightness ratio is connected with high-definition camera compared with equipment, for receiving current high-definition image and previous Frame high-definition image, the average brightness value of current high-definition image is calculated as the first brightness value, is calculated previous The average brightness value of frame high-definition image as the second brightness value, when the first brightness value and the second brightness value all During more than or equal to predetermined luminance threshold value, pre-warning signal of taking on the sly is sent, current high-definition image is sent to ash Degreeization processing equipment, otherwise, normal viewing signal is sent, stops current high-definition image being sent to ash Degreeization processing equipment；Gray processing processing equipment, it is connected with brightness ratio compared with equipment, including channel parameters carry Unit, weighted value memory cell and gray value computing unit are taken, channel parameters extraction unit is taken the photograph with high definition As head connects, for receiving current high-definition image to extract each pixel in current high-definition image R passages pixel value, G passages pixel value and channel B pixel value, weighted value memory cell is used for pre- First store R channel weightings value, G channel weightings value and channel B weighted value, gray value computing unit It is connected respectively with channel parameters extraction unit and weighted value memory cell, for every in current high-definition image One pixel, by R passages pixel value and product, G passages pixel value and the G of R channel weighting values The product and channel B pixel value of channel weighting value and the product addition of channel B weighted value are to obtain pin To pixel gray value, and the gray value based on each pixel in current high-definition image is worked as Gray level image corresponding to preceding high-definition image；Wherein, R channel weightings value value is 0.298839, G Channel weighting value value is 0.586811, and channel B weighted value value is 0.114350；Histogram distribution Detection device, it is connected with gray processing processing equipment, for receiving gray level image, and to gray processing figure As carrying out grey level histogram processing to obtain corresponding histogram image, presented in histogram image bimodal During distribution, global threshold selection signal is sent, otherwise, sends non-global threshold selection signal；Threshold value Equipment is selected, is connected with histogram distribution detection device, for receiving global threshold selection signal When, exported global threshold 128 as threshold data, when receiving non-global threshold selection signal, Exported neighbor pixel gray difference threshold 40 as threshold data；Binary conversion treatment equipment, respectively Equipment and histogram distribution detection device is selected to be connected with threshold value, for receiving global threshold selection During signal, for each pixel in gray level image, when gray value is more than or equal to threshold data When, by for pixel be arranged to white level pixel, when gray value is less than threshold data, will For pixel be arranged to black level pixel, and binary picture corresponding to output gray level image Picture；Binary conversion treatment equipment is additionally operable to when receiving non-global threshold selection signal, for gray processing Each pixel in image, vertical direction is calculated upwards apart from the pixel of its 3 pixels Gray value calculates vertical direction downwards apart from the pixel of its 3 pixels as upper grey scale pixel value Gray value as lower grey scale pixel value, calculated level direction is to the left apart from the pixel of its 3 pixels The gray value of point is as left grey scale pixel value, and calculated level direction is to the right apart from the picture of its 3 pixels The gray value of vegetarian refreshments is as right grey scale pixel value, when the difference of upper grey scale pixel value and lower grey scale pixel value Absolute value is less than or equal to threshold data and the absolute value of the difference of left grey scale pixel value and right grey scale pixel value During less than or equal to threshold data, by for pixel be arranged to white level pixel, when upper pixel ash The absolute value of angle value and the difference of lower grey scale pixel value is more than threshold data or left grey scale pixel value and right picture When the absolute value of the difference of plain gray value is more than threshold data, by for pixel be arranged to black level picture Vegetarian refreshments, and binary image corresponding to output gray level image；Picture smooth treatment equipment, with two-value Change processing equipment connection, for receiving binary image, for each pixel in binary image Point, when more than half trip point in adjacent all pixels point be present, then by for pixel Gray value retain, otherwise, by for the gray value of pixel be arranged to white level pixel, and Export smoothed image corresponding to binary image；Adaptive recursive filtering equipment, with image balance processing Equipment is connected, and for receiving smoothed image, adaptive recursive filtering processing is performed to smoothed image to obtain Obtain filtering image；Human face region divides equipment, is arranged in the Background control room of theatre, and adaptive The connection of recursive filtering equipment is answered to obtain filtering image, by filtering image and the facial contour prestored Pattern is matched to detect and be partitioned into each face subgraph in filtering image, for each Face subgraph, seat corresponding to the face subgraph being directed to for its determination of position in filtering image Bit number；Wherein, for face subgraph corresponding to seat numbering be corresponding to people's face image sight Theatre seat numbering where many；Civil power access interface, it is connected with the line of theatre position, For receiving the Alternating Current Power Supply signal of line input；Current transformer and sample circuit, with civil power A phase lines, B phase lines in circuit connect with C phase lines, for A phase lines, B phase lines Current signal in road and C phase lines is sampled respectively；In voltage sample circuit, with line A phase lines, B phase lines connected with C phase lines, for A phase lines, B phase lines and C Voltage signal in phase line is sampled respectively；Current signal conditioning circuit, with current transformer and Sample circuit connects, for carrying out signal condition to sampling current；Voltage signal conditioning circuit, with electricity Sample circuit connection is pressed, for carrying out signal condition to sampling voltage；AD73360 chips, respectively with Current signal conditioning circuit connects with voltage signal conditioning circuit, to the sampling current after conditioning and conditioning Sampling voltage afterwards performs 16 A/D conversions respectively, obtains digital current signal and digital voltage letter Number, the virtual value sum of digital current signal is also determined based on digital current signal and digital voltage signal The virtual value of word voltage signal；Alternating Current Power Supply conversion equipment, with A phase lines, the B in line Phase line connects with C phase lines, for performing conversion of the alternating current to direct current, is set for each electricity consumption It is standby that supply of electric power is provided；Wherein, the real-time face brightness of face subgraph deviates from real time environment brightness Determination mode it is as follows：When the real-time face brightness of face subgraph is more than real time environment brightness, really The real-time face brightness and real time environment brightness for determining face subgraph deviate from, real-time when face subgraph When face brightness is less than or equal to real time environment brightness, real-time face brightness and the reality of face subgraph are determined When ambient brightness is non-deviates from；Wherein, AVR32 chips are also connected with AD73360 chips, for base Electrical management control is realized in the virtual value of digital current signal and the virtual value of digital voltage signal, its In, when the virtual value of digital current signal and the product of virtual value of digital voltage signal are less than default work( During rate threshold value, into energy-saving mode, when the virtual value of digital current signal and having for digital voltage signal When the product of valid value is more than or equal to predetermined power threshold value, energy-saving mode is exited.

More specifically, in the alternating current voltage samples conditioning system, in addition to：AD73360 cores Piece is arranged in the Background control room of theatre.

More specifically, in the alternating current voltage samples conditioning system, in addition to：Alternating Current Power Supply turns Exchange device is arranged in the Background control room of theatre.

More specifically, in the alternating current voltage samples conditioning system, in addition to：Current signal is adjusted Reason circuit is arranged in the Background control room of theatre.

More specifically, in the alternating current voltage samples conditioning system, in addition to：Current signal is adjusted Reason circuit is arranged in the Background control room of theatre.

More specifically, in the alternating current voltage samples conditioning system, in addition to：Current transformer And sample circuit is arranged in the Background control room of theatre.

More specifically, in the alternating current voltage samples conditioning system, in addition to：Adaptive recurrence Filter apparatus, human face region division equipment and picture smooth treatment integration of equipments are in one piece of surface-mounted integrated circuit On.

More specifically, in the alternating current voltage samples conditioning system, in addition to：Radio communication connects Mouthful, it is connected with AVR32 chips, for transmitting wirelessly targeted seat numbering.

Brief description of the drawings

Embodiment of the present invention is described below with reference to accompanying drawing, wherein：

Fig. 1 is the structure side of the alternating current voltage sampling conditioning system according to embodiment of the present invention Block diagram.

Reference：1 voltage sample circuit；2 civil power access interfaces；3 voltage signal conditioning circuits

Embodiment

The embodiment of the alternating current voltage sampling conditioning system of the present invention is entered below with reference to accompanying drawings Row describes in detail.

Currently, the behavior of taking on the sly of the performance such as cinema, theater, arenas, projection room or theatre occasion Image that is very serious, being taken on the sly due to the development of camera technique and the development of image processing techniques, scene Quality is very high, it is easy to so that serious blow is legal for carrying out network selling or dish sale The pressure of operator, certain negative effect is brought to industry development.

For example, according to the record of Motion Picture Association of America, movie piracy causes film industry to lose height every year Up to 6,000,000,000 dollars.Movie piracy has far-reaching influence to whole economic sectors, so that he is every One country is all identified a kind of criminal offence.And a kind of main source of pirated film is just It is that shooting is taken on the sly, that is, film is carried out by mobile device in cinema or projection room and taken on the sly.To the greatest extent Pipe BBC reports that most of movie piracy may be from industry internal staff and be supplied to movie critic's Advance film duplicates, but it is still an important sources of online pirate sale that shooting, which is taken on the sly,.Most The development of recent decades, Internet bandwidth and point-to-point protocol all promotes the further stream of pirated film It is logical.

In order to detect the uncommitted digital multimedia video illegally propagated, digital watermark is universal Research and be widely used.In Making Movies or film ejection stage, it can take and be planted in film Enter to make one the method that eye can't see " pattern " information.If these films are taken on the sly record by video camera, The collection of illustrative plates of this insertion can be extracted and identify the source of piracy.

Some industry leaders are in order to identify and tracing pirate film, it is proposed that pass through Coded Anti-Piracy (CAP) method, i.e., toward increasing watermark in film.First Coded Anti-Piracy is designed by Kodak , subsequent Deluxe Laboratories improve to it.Philips it is also proposed in 2006 One mark system for being named as CineFence.However, digital watermark is a kind of passive measure, He can not eliminate and prevent shooting from taking on the sly.On the other hand, camera perturbation technique is intended to pass through heavy damage Film visual quality taken on the sly to eliminate shooting, while these interference signals is not interfered with movie theatre Spectators.

Early stage, substantial amounts of camera interference method mainly make use of the principle of imaging sensor response infrared ray. In order to disturb mobile camera and light be generated in the picture of shooting, infrared emitter is installed in In cinema.Except the extra cost such as those transmitters and regular job expense, this scheme can With by enclosing appropriate filter on camera lens.But this mode is easy to the selection because the person of taking on the sly And it is avoided.

In order to overcome above-mentioned deficiency, the present invention has built a kind of alternating current voltage sampling conditioning system, right Auditorium image carries out electronic analysis, and electronic analysis is carried out to live performance environment, and based on two kinds points Analysis result carries out the person's of taking on the sly judgement, in addition, the positional information also based on the person of taking on the sly carries to the person of taking on the sly Wake up, so as to realize that the oriented detection of the live person of taking on the sly of performance and orientation alert.

Fig. 1 is the structure side of the alternating current voltage sampling conditioning system according to embodiment of the present invention Block diagram, the system include voltage sample circuit, civil power access interface and voltage signal conditioning circuit, Civil power access interface is used for the Alternating Current Power Supply signal for receiving line input, voltage sample circuit and city A phase lines, B phase lines in electric line connect with C phase lines, for A phase lines, B phases Voltage signal in circuit and C phase lines is sampled respectively, and voltage signal conditioning circuit takes with voltage Sample circuit connects, for carrying out signal condition to sampling voltage.

Then, continue to enter traveling one to the concrete structure of the alternating current voltage sampling conditioning system of the present invention The explanation of step.

The system includes：Remote control equipment, the roof position being arranged on directly over theatre stage, use In being connected with AVR32 chips to receive the driving control signal that AVR32 chips are sent, and to driving Control signal is parsed to determine that targeted seat is numbered, and is numbered based on targeted seat and is determined remote control letter Number.

The system includes：Bass caution device, one is set on each spectators seat, including it is distant Receiver to be controlled, bass plays chip and plays controlling switch, receiver of remote-control sytem is used to receive remote signal, Play controlling switch to be connected with receiver of remote-control sytem and bass broadcasting chip respectively, for based on remote signal Start bass and play chip to carry out bass warning operation；Wherein, bass plays chip and deposited including voice Reservoir, for prestoring the phonetic warning file related to no photographing；Timer, it is arranged on song In the Background control room of theater, for providing timing signal.

The system includes：Ambient brightness sensing equipment, theatre roof middle position is arranged on, used In sensing theatre internal environment real-time luminosity using be used as real time environment brightness output.

The system includes：Face brightness detection device, is arranged in the Background control room of theatre, With human face region division equipment connection with everyone face image of reception and its corresponding seat numbering, Gray value for each pixel based on everyone face image calculates everyone face image Brightness of image using be used as real-time face brightness output.

The system includes：Brightness deviates from detection device, is arranged in the Background control room of theatre, It is connected respectively with timer, ambient brightness detection device and face brightness detection device, for receiving reality When ambient brightness and receive the real-time face brightness of everyone face image, for each face Subgraph, reach predetermined time period when the time that its real-time face brightness and real time environment brightness deviate from During threshold value, seat numbering corresponding to face subgraph is numbered as targeted seat and exported.

The system includes：AVR32 chips, it is arranged in the Background control room of theatre, with brightness Connected away from detection device, the driving of targeted seat numbering is included for being sent based on targeted seat numbering Control signal；High-definition camera, theatre roof middle position is arranged on, for based on pre-set image Acquisition rate singing in antiphonal style theater stage opposite carries out sequential image acquisition with continuous high definition on output time Image.

The system includes：Brightness ratio is connected, for receiving current height compared with equipment with high-definition camera Clear image and former frame high-definition image, calculate the average brightness value of current high-definition image as the first brightness Value, calculate the average brightness value of former frame high-definition image as the second brightness value, when the first brightness value and When second brightness value is both greater than equal to predetermined luminance threshold value, pre-warning signal of taking on the sly is sent, by current high definition Image is sent to gray processing processing equipment, otherwise, sends normal viewing signal, stops current high definition Image is sent to gray processing processing equipment.

The system includes：Gray processing processing equipment, it is connected with brightness ratio compared with equipment, including passage ginseng Number extraction unit, weighted value memory cell and gray value computing unit, channel parameters extraction unit and height Clear camera connection, for receiving current high-definition image to extract each picture in current high-definition image R passages pixel value, G passages pixel value and the channel B pixel value of vegetarian refreshments, weighted value memory cell are used In having prestored R channel weightings value, G channel weightings value and channel B weighted value, gray value calculates Unit is connected with channel parameters extraction unit and weighted value memory cell respectively, for current high-definition image In each pixel, by the product of R passages pixel value and R channel weighting values, G passage pixel values With the product and channel B pixel value of G channel weighting values and the product addition of channel B weighted value with The gray value for the pixel being directed to is obtained, and based on the gray value of each pixel in current high-definition image Obtain gray level image corresponding to current high-definition image；Wherein, R channel weightings value value is 0.298839, G channel weighting value value is 0.586811, and channel B weighted value value is 0.114350.

The system includes：Histogram distribution detection device, it is connected, is used for gray processing processing equipment Gray level image is received, and grey level histogram processing is carried out to gray level image to obtain corresponding Nogata Figure image, when bimodal distribution is presented in histogram image, global threshold selection signal is sent, otherwise, Send non-global threshold selection signal.

The system includes：Threshold value select equipment, be connected with histogram distribution detection device, for When receiving global threshold selection signal, export, receiving using global threshold 128 as threshold data It is during to non-global threshold selection signal, neighbor pixel gray difference threshold 40 is defeated as threshold data Go out.

The system includes：Binary conversion treatment equipment, select equipment and histogram distribution with threshold value respectively Detection device connects, for when receiving global threshold selection signal, in gray level image Each pixel, when gray value is more than or equal to threshold data, by for pixel be arranged to white Level pixel point, when gray value is less than threshold data, by for pixel be arranged to black level picture Vegetarian refreshments, and binary image corresponding to output gray level image；Binary conversion treatment equipment is additionally operable to connecing When receiving non-global threshold selection signal, for each pixel in gray level image, calculate and hang down Nogata to upwards apart from its 3 pixels pixel gray value as upper grey scale pixel value, calculate Vertical direction downwards apart from its 3 pixels pixel gray value as lower grey scale pixel value, meter Calculate horizontal direction to the left apart from its 3 pixels pixel gray value as left grey scale pixel value, Calculated level direction to the right apart from its 3 pixels pixel gray value as right pixel grey scale Value, when upper grey scale pixel value and the absolute value of the difference of lower grey scale pixel value are less than or equal to threshold data and a left side When the absolute value of the difference of grey scale pixel value and right grey scale pixel value is less than or equal to threshold data, by for Pixel is arranged to white level pixel, absolute when the difference of upper grey scale pixel value and lower grey scale pixel value Value is more than threshold value more than the absolute value of threshold data or the difference of left grey scale pixel value and right grey scale pixel value During data, by for pixel be arranged to black level pixel, and corresponding to output gray level image Binary image.

The system includes：Picture smooth treatment equipment, it is connected with binary conversion treatment equipment, for connecing Binary image is received, for each pixel in binary image, when adjacent all pixels point During middle trip point in the presence of more than half, then by for the gray value of pixel retain, otherwise, will For the gray value of pixel be arranged to white level pixel, and export and put down corresponding to binary image Sliding image.

The system includes：Adaptive recursive filtering equipment, is connected with image balance processing equipment, uses In receiving smoothed image, adaptive recursive filtering processing is performed to smoothed image to obtain filtering image.

The system includes：Human face region divides equipment, is arranged in the Background control room of theatre, It is connected with adaptive recursive filtering equipment to obtain filtering image, by filtering image and the people prestored Face contour patterns are matched to detect and be partitioned into each face subgraph in filtering image, for Everyone face image, the face subgraph pair for determining to be directed to for its position in filtering image The seat numbering answered；Wherein, for face subgraph corresponding to seat numbering be people's face image pair Theatre seat numbering where the spectators answered.

The system includes：Civil power access interface, it is connected, is used for the line of theatre position Receive the Alternating Current Power Supply signal of line input；Current transformer and sample circuit, with line In A phase lines, B phase lines connected with C phase lines, for A phase lines, B phase lines and Current signal in C phase lines is sampled respectively；A in voltage sample circuit, with line Phase line, B phase lines connect with C phase lines, for A phase lines, B phase lines and C phase lines Voltage signal in road is sampled respectively.

The system includes：Current signal conditioning circuit, it is connected with current transformer and sample circuit, For carrying out signal condition to sampling current；Voltage signal conditioning circuit, it is connected with voltage sample circuit, For carrying out signal condition to sampling voltage.

The system includes：AD73360 chips, respectively with current signal conditioning circuit and voltage signal Modulate circuit is connected, and 16 are performed respectively to the sampling current after conditioning and the sampling voltage after conditioning A/D is changed, and digital current signal and digital voltage signal is obtained, also based on digital current signal sum Word voltage signal determines the virtual value of digital current signal and the virtual value of digital voltage signal.

The system includes：Alternating Current Power Supply conversion equipment, with the A phase lines in line, B phases Circuit connects with C phase lines, is each electrical equipment for performing conversion of the alternating current to direct current Supply of electric power is provided.

Wherein, the determination mode that the real-time face brightness of face subgraph deviates from real time environment brightness is such as Under：When the real-time face brightness of face subgraph is more than real time environment brightness, face subgraph is determined Real-time face brightness deviate from real time environment brightness, when the real-time face brightness of face subgraph is less than During equal to real time environment brightness, determine that the real-time face brightness of face subgraph and real time environment brightness are non- Deviate from.

Wherein, AVR32 chips are also connected with AD73360 chips, for based on digital current signal Virtual value and the virtual value of digital voltage signal realize electrical management control, wherein, work as digital current When the product of the virtual value of signal and the virtual value of digital voltage signal is less than predetermined power threshold value, enter Energy-saving mode, when the virtual value of digital current signal and the product of virtual value of digital voltage signal are more than During equal to predetermined power threshold value, energy-saving mode is exited.

Alternatively, in the platform：AD73360 chips are arranged in the Background control room of theatre； Alternating Current Power Supply conversion equipment is arranged in the Background control room of theatre；Current signal conditioning circuit is set In the Background control room of theatre；Current transformer and sample circuit are arranged on the backstage control of theatre System is indoor；Adaptive recursive filtering equipment, human face region division equipment and picture smooth treatment equipment collection On Cheng Yi block surface-mounted integrated circuits；Wireless communication interface, it is connected with AVR32 chips, for wirelessly sending out Targeted seat is sent to number.

In addition, wave filter, is the device filtered to ripple as its name suggests." ripple " is one non- Normal extensive physical concept, in electronic technology field, " ripple " is narrowly confined to refer in particular to description respectively The value of physical quantity is planted with the process of time fluctuations.The process by the effect of various kinds of sensors, The function of time of voltage or electric current, the time waveform of referred to as various physical quantitys are converted into, or is claimed Be signal.Because the independent variable time is continuous value, referred to as continuous time signal, again Habitually it is referred to as analog signal.

With the generation and rapid development of digital electronic computer technology, for the ease of computer to letter Number handled, generate and continuous time signal is transformed into discrete time letter under sampling theorem guidance Number complete theoretical and method.That is, can be only with original analog signal in series of discrete Between sample value expression primary signal in coordinate points without losing any information, ripple, waveform, signal this It is exactly that modern society relies naturally since what a little concepts were expressed is the change of various physical quantitys in objective world With the carrier of the various information of existence.Information needs to propagate, and what is leaned on is exactly the transmission of waveform signal.Letter Number its generation, conversion, transmission each link may due to the presence of environment and interference and Distortion, even in quite a number of cases, this distortion are also very serious, cause signal and its are taken The information of band is embedded among noise dearly.In order to filter out these noises, recover the signal of script, Various wave filters are needed to use to be filtered processing.

Conditioning system is sampled using the alternating current voltage of the present invention, can not be performance for prior art Take on the sly and the technical problem of effective detection of electrons be provided, by using targetedly, high-precision one Image series processing equipment and image analysis equipment are analyzed the audience status of auditorium, are also passed through The environment at performance scene is analyzed, on the basis of above-mentioned analysis, to pirates shoot person in auditorium Behavior carries out accurate detection and position identification, finally takes aposematic mechanism to carry out electronics to the person of taking on the sly and carries Wake up.

It is understood that although the present invention is disclosed as above with preferred embodiment, but above-mentioned implementation Example is not limited to the present invention.For any those skilled in the art, do not departing from Under technical solution of the present invention ambit, all using the technology contents of the disclosure above to the technology of the present invention Scheme makes many possible changes and modifications, or is revised as the equivalent embodiment of equivalent variations.Therefore, Every content without departing from technical solution of the present invention, the technical spirit according to the present invention is to above example Any simple modifications, equivalents, and modifications done, still fall within technical solution of the present invention protection In the range of.

Claims (2)

1. a kind of alternating current voltage samples conditioning system, the system includes voltage sample circuit, city Interface and voltage signal conditioning circuit are electrically accessed, civil power access interface is used to receive line input Alternating Current Power Supply signal, voltage sample circuit and the A phase lines in line, B phase lines and C phases Connection, for being carried out respectively to the voltage signal in A phase lines, B phase lines and C phase lines Sampling, voltage signal conditioning circuit are connected with voltage sample circuit, for carrying out signal to sampling voltage Conditioning.

2. alternating current voltage as claimed in claim 1 samples conditioning system, it is characterised in that institute The system of stating includes：

Remote control equipment, the roof position being arranged on directly over theatre stage, for AVR32 chips Connection is parsed with receiving the driving control signal that AVR32 chips are sent to driving control signal To determine that targeted seat is numbered, numbered based on targeted seat and determine remote signal；

Bass caution device, one, including receiver of remote-control sytem, bass are set on each spectators seat Play chip and play controlling switch, receiver of remote-control sytem is used to receive remote signal, plays controlling switch Chip is played with receiver of remote-control sytem and bass to be connected, played for starting bass based on remote signal respectively Chip is operated with carrying out bass warning；Wherein, bass, which plays chip, includes speech memory, for pre- First store the phonetic warning file related to no photographing；

Timer, it is arranged in the Background control room of theatre, for providing timing signal；

Ambient brightness sensing equipment, theatre roof middle position is arranged on, for sensing in theatre The real-time luminosity of portion's environment as real time environment brightness to export；

Face brightness detection device, is arranged in the Background control room of theatre, is divided with human face region Equipment connection is with reception everyone face image seat numbering corresponding with its, for based on each The gray value of each pixel of face subgraph calculates the brightness of image of everyone face image to make Exported for real-time face brightness；

Brightness deviates from detection device, is arranged in the Background control room of theatre, respectively with timer, Ambient brightness detection device connects with face brightness detection device, for receive real time environment brightness and The real-time face brightness of everyone face image is received, for everyone face image, when in fact When time for deviating from of face brightness and real time environment brightness when reaching predetermined time period threshold value, by face Seat numbering corresponding to subgraph is as targeted seat numbering output；

AVR32 chips, it is arranged in the Background control room of theatre, connects with brightness away from detection device Connect, the driving control signal of targeted seat numbering is included for being sent based on targeted seat numbering；

High-definition camera, theatre roof middle position is arranged on, for gathering speed based on pre-set image Rate singing in antiphonal style theater stage opposite carries out sequential image acquisition with continuous high-definition image on output time；

Brightness ratio is connected, for receiving current high-definition image and former frame compared with equipment with high-definition camera High-definition image, the average brightness value of current high-definition image is calculated as the first brightness value, calculates former frame The average brightness value of high-definition image is as the second brightness value, when the first brightness value and the second brightness value are all big When equal to predetermined luminance threshold value, pre-warning signal of taking on the sly is sent, current high-definition image is sent to gray scale Change processing equipment, otherwise, send normal viewing signal, stop current high-definition image being sent to gray scale Change processing equipment；

Gray processing processing equipment, be connected with brightness ratio compared with equipment, including channel parameters extraction unit, plus Weight storage unit and gray value computing unit, channel parameters extraction unit are connected with high-definition camera, For receiving current high-definition image to extract the R passage pictures of each pixel in current high-definition image Element value, G passages pixel value and channel B pixel value, weighted value memory cell are used to prestore R Channel weighting value, G channel weightings value and channel B weighted value, gray value computing unit respectively with passage Parameter extraction unit connects with weighted value memory cell, for each pixel in current high-definition image Point, R passages pixel value and product, G passages pixel value and the G passages of R channel weighting values are added The picture that the product and channel B pixel value of weights are directed to the product addition of channel B weighted value with obtaining The gray value of vegetarian refreshments, and the gray value based on each pixel in current high-definition image obtains current high definition Gray level image corresponding to image；Wherein, R channel weightings value value is that 0.298839, G passages add Weights value is 0.586811, and channel B weighted value value is 0.114350；

Histogram distribution detection device, it is connected with gray processing processing equipment, for receiving gray level image, And grey level histogram processing is carried out to gray level image to obtain corresponding histogram image, in histogram When bimodal distribution is presented in image, global threshold selection signal is sent, otherwise, sends non-global threshold choosing Select signal；

Threshold value selects equipment, is connected with histogram distribution detection device, for receiving global threshold During selection signal, exported global threshold 128 as threshold data, receiving non-global threshold choosing When selecting signal, exported neighbor pixel gray difference threshold 40 as threshold data；

Binary conversion treatment equipment, equipment and histogram distribution detection device is selected to be connected with threshold value respectively, For when receiving global threshold selection signal, for each pixel in gray level image, When gray value is more than or equal to threshold data, by for pixel be arranged to white level pixel, when When gray value is less than threshold data, by for pixel be arranged to black level pixel, and export ash Binary image corresponding to degreeization image；Binary conversion treatment equipment is additionally operable to receiving non-global threshold During selection signal, for each pixel in gray level image, the upward distance of vertical direction is calculated The gray value of the pixel of its 3 pixels as upper grey scale pixel value, calculate vertical direction downwards away from From its 3 pixels pixel gray value as lower grey scale pixel value, calculated level direction is to the left Apart from its 3 pixels pixel gray value as left grey scale pixel value, calculated level direction to The gray value of the right pixel apart from its 3 pixels is as right grey scale pixel value, when upper pixel grey scale The absolute value of value and the difference of lower grey scale pixel value is less than or equal to threshold data and left grey scale pixel value and the right side When the absolute value of the difference of grey scale pixel value is less than or equal to threshold data, by for pixel be arranged to white Level pixel point, when upper grey scale pixel value and the absolute value of the difference of lower grey scale pixel value are more than threshold data Or the absolute value of the difference of left grey scale pixel value and right grey scale pixel value is when being more than threshold data, by for Pixel is arranged to black level pixel, and binary image corresponding to output gray level image；

Picture smooth treatment equipment, it is connected with binary conversion treatment equipment, for receiving binary image, For each pixel in binary image, when more than half being present in adjacent all pixels point Trip point when, then by for the gray value of pixel retain, otherwise, by for pixel Gray value is arranged to white level pixel, and exports smoothed image corresponding to binary image；

Adaptive recursive filtering equipment, is connected with image balance processing equipment, for receiving smoothed image, Adaptive recursive filtering processing is performed to smoothed image to obtain filtering image；

Human face region divides equipment, is arranged in the Background control room of theatre, is filtered with adaptive recurrence Wave device is connected to obtain filtering image, and filtering image and the facial contour pattern prestored are carried out Matching is schemed with detecting and being partitioned into each face subgraph in filtering image for everyone face Picture, seat corresponding to the face subgraph for determining to be directed to for its position in filtering image are numbered； Wherein, for face subgraph corresponding to where seat numbering is spectators corresponding to people's face image Number at theatre seat；

Civil power access interface, it is connected with the line of theatre position, it is defeated for receiving line The Alternating Current Power Supply signal entered；

A phase lines, B phase lines and C phases in current transformer and sample circuit, with line Connection, for being carried out respectively to the current signal in A phase lines, B phase lines and C phase lines Sampling；

Voltage sample circuit, it is connected with the A phase lines in line, B phase lines and C phase lines, For being sampled respectively to the voltage signal in A phase lines, B phase lines and C phase lines；

Current signal conditioning circuit, it is connected with current transformer and sample circuit, for sampling current Carry out signal condition；

Voltage signal conditioning circuit, it is connected with voltage sample circuit, for carrying out signal to sampling voltage Conditioning；

AD73360 chips, are connected with current signal conditioning circuit and voltage signal conditioning circuit respectively, Perform 16 A/D conversions respectively to the sampling current after conditioning and the sampling voltage after conditioning, obtain Digital current signal and digital voltage signal, also determined based on digital current signal and digital voltage signal The virtual value of digital current signal and the virtual value of digital voltage signal；

Alternating Current Power Supply conversion equipment, with the A phase lines in line, B phase lines and C phase lines Connection, for performing conversion of the alternating current to direct current, supply of electric power is provided for each electrical equipment；

Wherein, the determination mode that the real-time face brightness of face subgraph deviates from real time environment brightness is such as Under：When the real-time face brightness of face subgraph is more than real time environment brightness, face subgraph is determined Real-time face brightness deviate from real time environment brightness, when the real-time face brightness of face subgraph is less than During equal to real time environment brightness, determine that the real-time face brightness of face subgraph and real time environment brightness are non- Deviate from；

Wherein, AVR32 chips are also connected with AD73360 chips, for based on digital current signal Virtual value and the virtual value of digital voltage signal realize electrical management control, wherein, work as digital current When the product of the virtual value of signal and the virtual value of digital voltage signal is less than predetermined power threshold value, enter Energy-saving mode, when the virtual value of digital current signal and the product of virtual value of digital voltage signal are more than During equal to predetermined power threshold value, energy-saving mode is exited；

AD73360 chips are arranged in the Background control room of theatre；

Alternating Current Power Supply conversion equipment is arranged in the Background control room of theatre.