CN105842495A - Image processing-based electric energy meter - Google Patents
Image processing-based electric energy meter Download PDFInfo
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- CN105842495A CN105842495A CN201610409550.8A CN201610409550A CN105842495A CN 105842495 A CN105842495 A CN 105842495A CN 201610409550 A CN201610409550 A CN 201610409550A CN 105842495 A CN105842495 A CN 105842495A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention relates to an image processing-based electric energy meter. The image processing-based electric energy meter comprises an electric energy detection device, a figure action trajectory detection device, a figure appearance frequency detection device and a main controller; the electric energy detection device is used for detecting the electric parameter of power-frequency alternating current; the figure action trajectory detection device and the figure appearance frequency detection device are respectively used for determining the action trajectories and appearance frequencies of figure targets in an elevator based on image processing; and the main controller is connected with the electric energy detection device, the figure action trajectory detection device and the figure appearance frequency detection device. With the image processing-based electric energy meter if the invention adopted, the application range of the electric energy meter can be extended, and a space occupied by the equipment can be reduced.
Description
The present invention is Application No. 201610180550.5, filing date March 25 in 2016 day,
The divisional application of the patent of bright entitled " electric energy meter based on image procossing ".
Technical field
The present invention relates to image processing field, particularly relate to a kind of electric energy meter based on image procossing.
Background technology
From the point of view of the technical Analysis of electric energy meter, the major programme one of current power industry electric energy measurement instrument
As be all based on semiconductor technology and realize accurate measurement purpose.Electric energy meter generally individually have employed high accuracy
A/D converter, carry out sampling and analog digital conversion by the voltage of electrical network, current signal, then utilize
Digital signal is analyzed, processes and data reprocessing, sorting by high speed microprocessor, thus produces
Various continuous datas；Finally utilize various communication interface, man machine interface realize with various equipment carry out right
Connect.
But, the design of electric energy meter of the prior art has certain limitation, owing to electric energy meter leads to
Often it is placed on public space, but does not carry miscellaneous function equipment and the situation of public space is carried out
Monitoring or realize other functions, electric energy meter is confined to the parameter measurement of power circuit, even so,
The structure of electric energy meter of the prior art still has the space optimizing and transforming, electric energy of the prior art
The detection efficiency of table is the highest, and accuracy of detection still has much room for improvement.
Therefore, the present invention proposes a kind of electric energy meter based on image procossing, utilizes shared by existing electric energy meter
According to escalator public space the human target of escalator is detected in real time, to determine whether there is
Suspicious figure also decides whether to trigger warning, enters the internal structure of existing electric energy meter meanwhile
The integration of one step and optimization, improve the precision to Electrical Power Line Parameter detection.
Summary of the invention
In order to solve the problems referred to above, the invention provides a kind of electric energy meter based on image procossing, introduce
Personage's occurrence number detection equipment and personage's trajectory analysis equipment, when personage's occurrence number is less than or equal to pre-
If frequency threshold value and when receiving track questionable signal, send and there is suspect's alarm signal, meanwhile,
The structure of electric energy meter being carried out de-redundancy, thus improves the service behaviour of electric energy meter comprehensively, saving sets
Standby occupied public space.
According to an aspect of the present invention, it is provided that a kind of electric energy meter based on image procossing, including electric energy
Detection equipment, figure action track detection equipment, personage's occurrence number detection equipment and master controller,
Electric energy detection equipment for detecting the parameters of electric power of industrial-frequency alternating current, figure action track detection equipment and
Personage's occurrence number detection equipment is respectively used to determine the dynamic of escalator human target based on image procossing
Making track and occurrence number, master controller sets with electric energy detection equipment, figure action track detection respectively
Standby and personage's occurrence number detection equipment connects.
More specifically, in described electric energy meter based on image procossing, including: calibrating resistance, is one
Slide rheostat, resistance value is 2M Ω, and a fixing end is connected with the zero line of industrial-frequency alternating current, sliding
Moved end is connected with one end of the second resistance；Second resistance, resistance value is 1M Ω, the other end and first
One end of resistance connects, and meanwhile, the other end is as a measurement end output of sampled voltage；First resistance,
Resistance value is 1.5K Ω, and the other end is connected with the live wire of industrial-frequency alternating current；First electric capacity, capacitance is
220pf, one end is connected with the other end of the second resistance, other end ground connection；3rd resistance, resistance value is
470 Ω, one end is connected with the live wire of industrial-frequency alternating current, and the other end is as another measurement of sampled voltage
End output；Second electric capacity, capacitance is 220pf, and one end is connected with the other end of the 3rd resistance, separately
One end ground connection；3rd electric capacity, capacitance is 0.018uf, and one end is connected with the other end of the second resistance,
The other end of the other end and the 3rd resistance connects；4th resistance, resistance value is 0.6m Ω, is inserted in work
Frequently on the live wire of alternating current, i.e. two ends are all connected with the live wire of industrial-frequency alternating current；5th resistance, resistance
Value is 470 Ω, and one end is connected with one end of the 4th resistance, and the other end is as a measurement of sample rate current
End output；6th resistance, resistance value is 470 Ω, is connected with the other end of the 4th resistance, the other end
Another as sample rate current measures end output；4th electric capacity, capacitance is 220pf, one end and the
The other end of five resistance connects, other end ground connection；5th electric capacity, capacitance is 220pf, one end with
The other end of the 6th resistance connects, other end ground connection；6th electric capacity, capacitance is 0.018uf, one end
Being connected with the other end of the 5th resistance, the other end of the other end and the 6th resistance connects；Capacitance decompression electricity
Road, is connected with zero line and the live wire of industrial-frequency alternating current, for industrial-frequency alternating current is changed into 5V low pressure
Unidirectional current, for use as the power supply of electric energy detection equipment；Electric energy detection equipment, including tension measuring circuit,
Current measurement circuit and microprocessor, tension measuring circuit connects respectively with two measurement ends of sampled voltage
Connect to detect and export the real-time sampling voltage of industrial-frequency alternating current, current measurement circuit and sample rate current
Measure end for two to connect respectively to detect and export the real-time sampling electric current of industrial-frequency alternating current, microprocessor
Respectively with tension measuring circuit and current measurement circuit, real-time sampling voltage based on industrial-frequency alternating current and
The real-time sampling electric current of industrial-frequency alternating current, determines and exports the active power of industrial-frequency alternating current and idle merit
Rate；Xegregating unit, between electric energy detection equipment and AVR32 chip, uses photoelectric coupling circuit,
For realizing the isolation of artificial circuit part and digital circuits section, it is to avoid interfere；AC/DC electricity
Source device, including transformer step-down circuit, full bridge rectifier, filter circuit and mu balanced circuit, with
The zero line of industrial-frequency alternating current and live wire connect, for the industrial-frequency alternating current of 220V is converted to 5V or
The unidirectional current of 3.3V；ZIGBEE communication interface, is connected with AVR32 chip, for receive and to
Neighbouring radio meter register equipment sends active power and reactive power；The erasable serial of serial is erasable deposits
Reservoir AT24C16B, has 10,000 erasable circulations, is connected with AVR32 chip, be used for receiving work
Frequently the active power of alternating current and reactive power；Image capture device, is arranged on electric energy meter housing,
Shooting direction, towards escalator, is used for shooting high definition escalator image；Complexity detection equipment, with figure
As collecting device connects, it is used for receiving high definition escalator image, and calculates based on high definition escalator image
And export image complexity；Gray scale converting apparatus, is connected with image capture device, is used for receiving high definition
Escalator image, for each pixel in high definition escalator image, extracts its R, G, B
Three Color Channel components, to R, G, B tri-Color Channel component give different weighted value to carry out
Weighted average, to obtain corresponding gray value, the gray value composition gray level image of all pixels,
Wherein R, G, B tri-the weighted value of Color Channel component be respectively 0.3,0.59 and 0.11；Image is filtered
Wave device, is connected with complexity detection equipment and gray scale converting apparatus respectively, for complicated based on image
Degree determines the filtering strategies of selection, when image complexity is below default complexity range lower limit, and choosing
Select gaussian filtering strategy gray level image is filtered, when image complexity is in default complexity scope
Time more than the upper limit, mean filter strategy is selected gray level image to be filtered, when image complexity exists
Time within default complexity scope, select medium filtering strategy that gray level image is filtered；The overall situation
Binarizing apparatus, is connected with complexity detection equipment and image filtering equipment, respectively for based on image
Complexity determines the determination strategy of overall situation binary-state threshold, after determining overall situation binary-state threshold, makes
With overall situation binary-state threshold, gray level image is carried out binary conversion treatment so that the binary picture after process
The pixel value of picture only has 0 or 255 these two kinds selections, wherein determines overall situation two-value based on image complexity
The determination strategy changing threshold value specifically includes: when image complexity is below default complexity range lower limit
Time, use Two-peak method to determine overall situation binary-state threshold, when image complexity is in default complexity scope
When limiting above, maximum variance between clusters is used to determine overall situation binary-state threshold, when image complexity is in advance
If time within complexity scope, mean value method is used to determine overall situation binary-state threshold；Image correcting device,
It is connected to receive binary image with overall situation binarizing apparatus, for binary image is revolved successively
Turn correction process, redundancy cutting process and image normalization to process, to obtain correction chart picture；Personage knows
Other equipment, is connected with image capture device and image correcting device to receive high definition escalator image respectively
And binary image, for identifying personage's mesh of binary image based on default benchmark character contour
Mark, and be partitioned at high definition escalator image based on human target position at binary image right
The human target image answered；Personage's occurrence number detection equipment, with person recognition equipment and serial erasable
Except memorizer AT24C16B connects, receive personage's target image, the human target image that will receive
In human target and serial erasable memory AT24C16B in each existing human target image enter
Row coupling is to determine that whether for the first time human target occurs, it fails to match is then defined as occurring for the first time,
Then human target image corresponding for human target is stored string as new existing human target image
The occurrence number that in row erasable memory AT24C16B, also labelling is corresponding is 1, and it is the most true that the match is successful
Be set to is not to occur, then by having of matching in serial erasable memory AT24C16B for the first time
The occurrence number that human target image is corresponding increases by 1；Personage's occurrence number detection equipment is also by personage's mesh
The occurrence number of the existing human target image that mark is corresponding exports as personage's occurrence number；Personage's track
Analytical equipment, is connected with person recognition equipment to receive personage's target image, and being used for can based on default
Doubt figure action specification the action of the human target in human target image is mated, if coupling
Successful then output trajectory questionable signal, if it fails to match, output trajectory normal signal；AVR32 core
Sheet, is connected with electric energy detection equipment by isolation circuit, for receiving the active power of industrial-frequency alternating current
And reactive power；AVR32 chip detects equipment and personage's trajectory analysis with personage's occurrence number the most respectively
Equipment connects, when personage's occurrence number less than or equal to preset times threshold value and receives track questionable signal
Time, there is suspect's signal in output, when personage's occurrence number more than preset times threshold value or receives rail
During mark normal signal, there is not suspect's signal in output.
More specifically, in described electric energy meter based on image procossing, also include: mobile communication interface,
It is connected with AVR32 chip.
More specifically, in described electric energy meter based on image procossing: mobile communication interface will be for depositing
It is sent to the management of public safety center of far-end by two-way wireless communication link at suspect's signal.
More specifically, in described electric energy meter based on image procossing: mobile communication interface is for by work
Frequently the active power of alternating current and reactive power are sent to the center of checking meter of far-end.
More specifically, in described electric energy meter based on image procossing: serial erasable memory
AT24C16B is additionally operable to store preset times.
Accompanying drawing explanation
Below with reference to accompanying drawing, embodiment of the present invention are described, wherein:
Fig. 1 is the structure square frame according to the electric energy meter based on image procossing shown in embodiment of the present invention
Figure.
Reference: 1 electric energy detection equipment；2 figure action track detection equipment；3 personages occur
Number of times detection equipment；4 master controllers
Detailed description of the invention
Below with reference to accompanying drawings the embodiment of the electric energy meter based on image procossing of the present invention is carried out
Describe in detail.
Electric energy meter divides by accessing phase line, can be divided into single-phase, phase three-wire three, three-phase and four-line electric energy meter.
Electric energy meter is used to should be noted that following item: at low-voltage (less than 500 volts) and small area analysis
In the case of (tens peaces), electric energy meter can be directly accessed circuit and measure.At high voltage or electric greatly
In the case of stream, electric energy meter cannot directly access circuit, need to coordinate voltage transformer or current transformer
Use.For being directly accessed the electric energy meter of circuit, appropriate size to be selected according to load voltage and electric current
, make rated voltage and the rated current of electric energy meter, equal to or slightly greater than voltage or the electric current of load.
It addition, the power consumption of load will be more than the 10% of electric energy meter rated value, otherwise metering is inaccurate.Even
Sometimes the motionless aluminum dish of basic band rotates.So electric energy meter can not select the biggest.If selecting the least the easiest
Burn out electric energy meter.
Electric energy meter of the prior art develops to intelligent direction, such as, provide remote meter reading interface etc.,
But from the point of view of typically, there is following defect in electric energy meter of the prior art: the certainty of measurement of electric energy meter still has
Wait to improve；The function singleness of electric energy meter, still is limited to the operation of the detection to power circuit, the most fully
Utilize the public space of the public space shared by electric energy meter, such as escalator.
In order to overcome above-mentioned deficiency, the present invention has built a kind of electric energy meter based on image procossing, is carrying
While the detection efficiency of height self and accuracy of detection, it is possible to each personage's subject performance of escalator
Track and occurrence number judge, to determine whether to find suspicious figure, thus effectively maintain
The security context of building.
Fig. 1 is the structure square frame according to the electric energy meter based on image procossing shown in embodiment of the present invention
Figure, including electric energy detection equipment, figure action track detection equipment, personage's occurrence number detection equipment
And master controller, electric energy detection equipment is for detecting the parameters of electric power of industrial-frequency alternating current, figure action rail
Mark detection equipment and personage's occurrence number detection equipment are respectively used to determine escalator based on image procossing
The movement locus of human target and occurrence number, master controller respectively with electric energy detection equipment, Ren Wudong
Make track detection equipment and personage's occurrence number detection equipment connects.
Then, continue the concrete structure of the electric energy meter based on image procossing of the present invention is carried out further
Explanation.
Described electric energy meter includes: calibrating resistance, is a slide rheostat, and resistance value is 2M Ω, one
Individual fixing end is connected with the zero line of industrial-frequency alternating current, and one end of sliding end and the second resistance connects；Second
Resistance, resistance value is 1M Ω, and one end of the other end and the first resistance connects, and meanwhile, the other end is made
A measurement end output for sampled voltage；First resistance, resistance value is 1.5K Ω, the other end and power frequency
The live wire of alternating current connects.
Described electric energy meter includes: the first electric capacity, and capacitance is 220pf, and one end is another with the second resistance
One end connects, other end ground connection；3rd resistance, resistance value is 470 Ω, one end and industrial-frequency alternating current
Live wire connect, the other end as sampled voltage another measure end output；Second electric capacity, capacitance
For 220pf, one end is connected with the other end of the 3rd resistance, other end ground connection；3rd electric capacity, electric capacity
Value is 0.018uf, and one end is connected with the other end of the second resistance, the other end and the other end of the 3rd resistance
Connect；4th resistance, resistance value is 0.6m Ω, is inserted on the live wire of industrial-frequency alternating current, i.e. two ends
All it is connected with the live wire of industrial-frequency alternating current.
Described electric energy meter includes: the 5th resistance, and resistance value is 470 Ω, one end and the one of the 4th resistance
End connects, and the other end is as a measurement end output of sample rate current；6th resistance, resistance value is 470
Ω, is connected with the other end of the 4th resistance, and the other end is as another measurement end output of sample rate current；
4th electric capacity, capacitance is 220pf, and one end is connected with the other end of the 5th resistance, other end ground connection；
5th electric capacity, capacitance is 220pf, and one end is connected with the other end of the 6th resistance, other end ground connection；
6th electric capacity, capacitance is 0.018uf, and one end is connected with the other end of the 5th resistance, the other end and
The other end of six resistance connects；Capacity voltage dropping circuit, is connected with zero line and the live wire of industrial-frequency alternating current,
For industrial-frequency alternating current being changed into 5V low-voltage DC, for use as the power supply of electric energy detection equipment.
Described electric energy meter includes: electric energy detection equipment, including tension measuring circuit, current measurement circuit
And microprocessor, tension measuring circuit is measured end and is connected respectively to detect and defeated with the two of sampled voltage
Going out the real-time sampling voltage of industrial-frequency alternating current, current measurement circuit divides with two measurement ends of sample rate current
Not connecting to detect and export the real-time sampling electric current of industrial-frequency alternating current, microprocessor is surveyed with voltage respectively
Amount circuit and current measurement circuit, real-time sampling voltage based on industrial-frequency alternating current and industrial-frequency alternating current
Real-time sampling electric current, determines and exports active power and the reactive power of industrial-frequency alternating current.
Described electric energy meter includes: xegregating unit, between electric energy detection equipment and AVR32 chip,
Use photoelectric coupling circuit, for realizing the isolation of artificial circuit part and digital circuits section, it is to avoid
Interfere；AC/DC power-supply device, including transformer step-down circuit, full bridge rectifier, filtering
Circuit and mu balanced circuit, be connected with zero line and the live wire of industrial-frequency alternating current, for by the power frequency of 220V
Alternating current is converted to the unidirectional current of 5V or 3.3V.
Described electric energy meter includes: ZIGBEE communication interface, is connected with AVR32 chip, is used for receiving
And send active power and reactive power to neighbouring radio meter register equipment；Serial erasable serial erasable
Except memorizer AT24C16B, there is 10,000 erasable circulations, be connected with AVR32 chip, be used for connecing
Receive active power and the reactive power of industrial-frequency alternating current.
Described electric energy meter includes: image capture device, is arranged on electric energy meter housing, shooting direction court
To escalator, it is used for shooting high definition escalator image；Complexity detection equipment, with image capture device
Connect, be used for receiving high definition escalator image, and calculate based on high definition escalator image and export image
Complexity；Gray scale converting apparatus, is connected with image capture device, is used for receiving high definition escalator image,
For each pixel in high definition escalator image, extract its R, G, B tri-Color Channel and divide
Amount, the weighted value different to R, G, B tri-Color Channel component impartings is average to be weighted, with
Obtain corresponding gray value, gray value composition gray level image, wherein R, G, B of all pixels
The weighted value of three Color Channel components is respectively 0.3,0.59 and 0.11.
Described electric energy meter includes: image filtering equipment, converts with complexity detection equipment and gray scale respectively
Equipment connects, for determining the filtering strategies of selection based on image complexity, when image complexity is in advance
If time below complexity range lower limit, select gaussian filtering strategy that gray level image is filtered, when
When image complexity is more than default complexity range limit, select mean filter strategy to gray processing figure
As being filtered, when image complexity is within default complexity scope, select medium filtering strategy
Gray level image is filtered.
Described electric energy meter includes: overall situation binarizing apparatus, respectively with complexity detection equipment and image filter
Wave device connects, for determining the determination strategy of overall situation binary-state threshold based on image complexity, really
After fixed overall situation binary-state threshold, overall situation binary-state threshold is used to be carried out at binaryzation by gray level image
Reason so that the pixel value of the binary image after process only has 0 or 255 these two kinds selections, Qi Zhongji
Determine that in image complexity the determination strategy of overall situation binary-state threshold specifically includes: when image complexity exists
When presetting below complexity range lower limit, Two-peak method is used to determine overall situation binary-state threshold, when image is multiple
When miscellaneous degree is more than default complexity range limit, maximum variance between clusters is used to determine overall situation binaryzation
Threshold value, when image complexity is within default complexity scope, uses mean value method to determine the overall situation two
Value threshold value.
Described electric energy meter includes: image correcting device, is connected to receive two-value with overall situation binarizing apparatus
Change image, for binary image being carried out successively rotation correction process, redundancy cutting process and image
Normalized, to obtain correction chart picture；Person recognition equipment, respectively with image capture device and figure
As calibration equipment connects to receive high definition escalator image and binary image, for based on default base
Quasi-character contour identifies the human target of binary image, and based on human target at binary image
The position at place is partitioned into the human target image of correspondence at high definition escalator image.
Described electric energy meter includes: personage's occurrence number detection equipment, can with person recognition equipment and serial
Erasing memorizer AT24C16B connects, and receives personage's target image, the human target figure that will receive
Human target in Xiang and each existing human target image in serial erasable memory AT24C16B
Carrying out mating to determine that human target occurs the most for the first time, it fails to match is then defined as going out for the first time
Existing, then human target image corresponding for human target is stored as new existing human target image
The occurrence number that in serial erasable memory AT24C16B, also labelling is corresponding is 1, and the match is successful then
It is defined as not being to occur for the first time, then matches in serial erasable memory AT24C16B
The occurrence number that human target image is corresponding is had to increase by 1；Personage's occurrence number detection equipment is also by personage
The occurrence number of the existing human target image that target is corresponding exports as personage's occurrence number.
Described electric energy meter includes: personage's trajectory analysis equipment, is connected with person recognition equipment with recipient
Thing target image, is used for based on default suspicious figure's action norm the personage in human target image
The action of target is mated, if the match is successful, output trajectory questionable signal, if it fails to match
Then output trajectory normal signal.
Described electric energy meter includes: AVR32 chip, is connected with electric energy detection equipment by isolation circuit,
For receiving active power and the reactive power of industrial-frequency alternating current；AVR32 chip goes out with personage the most respectively
Occurrence number detection equipment and personage's trajectory analysis equipment connect, when personage's occurrence number is less than or equal to presetting
Frequency threshold value and when receiving track questionable signal, there is suspect's signal, when personage goes out occurrence in output
When number is more than preset times threshold value or receives track normal signal, there is not suspect's signal in output.
Alternatively, in described electric energy meter, also include: mobile communication interface, with AVR32 chip
Connect；Mobile communication interface is for being sent to there is suspect's signal by two-way wireless communication link
The management of public safety center of far-end；Mobile communication interface for by the active power of industrial-frequency alternating current and
Reactive power is sent to the center of checking meter of far-end；Serial erasable memory AT24C16B can also use
In storage preset times.
It addition, the current main product of electric energy meter industry is in the world already at Rapid development stage, belong to
In Chaoyang industry, the whole world includes that developed economies and developing country all change in the renewal carrying out electric energy meter
In generation, to adapt to the change of current All Around The World situation.One is global energy-saving and emission-reduction requirement, it is necessary to
Carry out the accurate measurement of energy, promote that each electricity consumption main body carries out power consumption control according to the change of energy, change
Become consumption habit；Two is to adapt to Management of Electrical Enterprise modernization, informationalized requirement, passes through Intelligent electric
Energy table, as a node of electrical network, can fast and effeciently understand the metering such as power consumer, transformer station
Measure the electricity consumption real-time condition of point, it is provided that more accurate service and management.
Have the call in electric energy meter product is single-phase resident's electric energy meter, but due to electricity consumption of resident
Increase year by year, the increase of power load, relevant electrical equipment requires to use three phase supply.Simultaneously
Utilize three phase supply can improve balancing the load rate, reduce electric power line loss.Developed country resident uses at present
TV university part has used three phase supply.Therefore the demand of three phase metering electric energy meter is by increasing,
Accounting in the demand structure of electric energy meter will step up.
For advancing intelligent grid construction, intelligent electric energy meter and power information acquisition system will be as Intelligent electrics
The important component part that net is built, it is achieved " all standing, full collection, the control in full " to electricity consumption user,
The lifting of power information acquisition system product technology will be promoted.
Use the electric energy meter based on image procossing of the present invention, for electric energy meter detection effect in prior art
Low and the Insufficient technical problem of rate, integrated detection platform on electric energy meter, by detection personage
The character features of electric energy meter place escalator is detected by occurrence number and figure action track, and works as
When personage's occurrence number is less than or equal to preset times threshold value and receives track questionable signal, output exists
Suspect's signal, when personage's occurrence number more than preset times threshold value or receives track normal signal
Time, there is not suspect's signal, thus realize the automatization to suspicious figure and report to the police in output, meanwhile,
The most perfect electric energy detection function of electric energy meter, improves the service behaviour of electric energy meter comprehensively.
Although it is understood that the present invention discloses as above with preferred embodiment, but above-mentioned enforcement
Example is not limited to the present invention.For any those of ordinary skill in the art, without departing from
Under technical solution of the present invention ambit, all may utilize the technology contents of the disclosure above to the technology of the present invention
Scheme makes many possible variations and modification, or is revised as the Equivalent embodiments of equivalent variations.Therefore,
Every content without departing from technical solution of the present invention, the technical spirit of the foundation present invention is to above example
Any simple modification, equivalent variations and the modification done, all still falls within technical solution of the present invention protection
In the range of.
Claims (2)
1. an electric energy meter based on image procossing, including electric energy detection equipment, figure action track
Detection equipment, personage's occurrence number detection equipment and master controller, electric energy detection equipment is used for detecting work
Frequently the parameters of electric power of alternating current, figure action track detection equipment and personage's occurrence number detection equipment divide
Movement locus and the occurrence number of escalator human target, main control Yong Yu not be determined based on image procossing
Device detects equipment with electric energy detection equipment, figure action track detection equipment and personage's occurrence number respectively
Connect.
2. electric energy meter based on image procossing as claimed in claim 1, it is characterised in that described
Electric energy meter includes:
Calibrating resistance, is a slide rheostat, and resistance value is 2M Ω, and a fixing end is handed over power frequency
The zero line of stream electricity connects, and one end of sliding end and the second resistance connects；
Second resistance, resistance value is 1M Ω, and one end of the other end and the first resistance connects, meanwhile,
The other end is as a measurement end output of sampled voltage；
First resistance, resistance value is 1.5K Ω, and the other end is connected with the live wire of industrial-frequency alternating current；
First electric capacity, capacitance is 220pf, and one end is connected with the other end of the second resistance, the other end
Ground connection；
3rd resistance, resistance value is 470 Ω, and one end is connected with the live wire of industrial-frequency alternating current, the other end
Another as sampled voltage measures end output；
Second electric capacity, capacitance is 220pf, and one end is connected with the other end of the 3rd resistance, the other end
Ground connection；
3rd electric capacity, capacitance is 0.018uf, and one end is connected with the other end of the second resistance, the other end
It is connected with the other end of the 3rd resistance；
4th resistance, resistance value is 0.6m Ω, is inserted on the live wire of industrial-frequency alternating current, and i.e. two ends are all
It is connected with the live wire of industrial-frequency alternating current；
5th resistance, resistance value is 470 Ω, and one end is connected with one end of the 4th resistance, and the other end is made
A measurement end output for sample rate current；
6th resistance, resistance value is 470 Ω, is connected with the other end of the 4th resistance, other end conduct
Another of sample rate current measures end output；
4th electric capacity, capacitance is 220pf, and one end is connected with the other end of the 5th resistance, the other end
Ground connection；
5th electric capacity, capacitance is 220pf, and one end is connected with the other end of the 6th resistance, the other end
Ground connection；
6th electric capacity, capacitance is 0.018uf, and one end is connected with the other end of the 5th resistance, the other end
It is connected with the other end of the 6th resistance；
Capacity voltage dropping circuit, is connected with zero line and the live wire of industrial-frequency alternating current, for by industrial-frequency alternating current
It is changed into 5V low-voltage DC, for use as the power supply of electric energy detection equipment；
Electric energy detection equipment, including tension measuring circuit, current measurement circuit and microprocessor, voltage
Measuring circuit is connected respectively with detection with two measurement ends of sampled voltage and exports industrial-frequency alternating current
Real-time sampling voltage, current measurement circuit is connected with detection also respectively with two measurement ends of sample rate current
The real-time sampling electric current of output industrial-frequency alternating current, microprocessor is surveyed with tension measuring circuit and electric current respectively
Amount circuit, real-time sampling voltage based on industrial-frequency alternating current and the real-time sampling electric current of industrial-frequency alternating current,
Determine and export active power and the reactive power of industrial-frequency alternating current；
Xegregating unit, between electric energy detection equipment and AVR32 chip, uses photoelectric coupling circuit,
For realizing the isolation of artificial circuit part and digital circuits section, it is to avoid interfere；
AC/DC power-supply device, including transformer step-down circuit, full bridge rectifier, filter circuit and
Mu balanced circuit, is connected with zero line and the live wire of industrial-frequency alternating current, for by the industrial-frequency alternating current of 220V
Be converted to the unidirectional current of 5V or 3.3V；
ZIGBEE communication interface, is connected with AVR32 chip, for receiving and wireless copying to neighbouring
Table equipment sends active power and reactive power；
Serial erasable serial erasable memory AT24C16B, has 10,000 erasable circulations, with
AVR32 chip connects, for receiving active power and the reactive power of industrial-frequency alternating current；
Image capture device, is arranged on electric energy meter housing, and shooting direction, towards escalator, is used for clapping
Take the photograph high definition escalator image；
Complexity detection equipment, is connected with image capture device, is used for receiving high definition escalator image,
And calculate based on high definition escalator image and export image complexity；
Gray scale converting apparatus, is connected with image capture device, is used for receiving high definition escalator image, pin
To each pixel in high definition escalator image, extract its R, G, B tri-Color Channel component,
The weighted value different to R, G, B tri-Color Channel component impartings is average to be weighted, to obtain
Corresponding gray value, gray value composition gray level image, wherein R, G, B tri-of all pixels
The weighted value of Color Channel component is respectively 0.3,0.59 and 0.11；
Image filtering equipment, is connected, for base with complexity detection equipment and gray scale converting apparatus respectively
The filtering strategies of selection is determined, when image complexity is at default complexity range lower limit in image complexity
Time following, select gaussian filtering strategy that gray level image is filtered, when image complexity is being preset
Time more than complexity range limit, select mean filter strategy that gray level image is filtered, work as figure
During as complexity within default complexity scope, select medium filtering strategy that gray level image is carried out
Filtering；
Overall situation binarizing apparatus, is connected with complexity detection equipment and image filtering equipment respectively, is used for
Determine the determination strategy of overall situation binary-state threshold based on image complexity, determine overall situation binary-state threshold
Afterwards, use overall situation binary-state threshold that gray level image is carried out binary conversion treatment so that after process
The pixel value of binary image only has 0 or 255 these two kinds selections, wherein determines based on image complexity
The determination strategy of overall situation binary-state threshold specifically includes: when image complexity is under default complexity scope
When limit is following, Two-peak method is used to determine overall situation binary-state threshold, when image complexity is in default complexity
Time more than range limit, maximum variance between clusters is used to determine overall situation binary-state threshold, when image is complicated
When degree is within default complexity scope, mean value method is used to determine overall situation binary-state threshold；
Image correcting device, is connected to receive binary image with overall situation binarizing apparatus, for two
Value image carries out rotation correction process, redundancy cutting process and image normalization successively and processes, to obtain
Obtain correction chart picture；
Person recognition equipment, is connected to receive high definition with image capture device and image correcting device respectively
Escalator image and binary image, for identifying binary picture based on default benchmark character contour
The human target of picture, and based on human target position at binary image from high definition escalator image
Place is partitioned into the human target image of correspondence；
Personage's occurrence number detection equipment, with person recognition equipment and serial erasable memory
AT24C16B connects, and receives personage's target image, the personage in the human target image that will receive
In target and serial erasable memory AT24C16B each existing human target image carry out mating with
Determining that whether for the first time human target occurs, it fails to match is then defined as occurring, then by personage for the first time
It is erasable that human target image corresponding to target stores serial as new existing human target image
In memorizer AT24C16B and occurrence number corresponding to labelling is 1, the match is successful be then defined as be not
Occur for the first time, then the existing human target that will match in serial erasable memory AT24C16B
The occurrence number that image is corresponding increases by 1；Personage's occurrence number detection equipment is also corresponding by human target
The occurrence number of existing human target image exports as personage's occurrence number；
Personage's trajectory analysis equipment, is connected with person recognition equipment to receive personage's target image, is used for
Based on default suspicious figure's action norm, the action of the human target in human target image is carried out
Coupling, if the match is successful, output trajectory questionable signal, if it fails to match, output trajectory is normal
Signal；
AVR32 chip, is connected with electric energy detection equipment by isolation circuit, is used for receiving industrial frequency AC
The active power of electricity and reactive power；AVR32 chip the most respectively with personage's occurrence number detection equipment and
Personage's trajectory analysis equipment connects, when personage's occurrence number less than or equal to preset times threshold value and receives
During track questionable signal, there is suspect's signal in output, when personage's occurrence number is more than preset times threshold
Value or when receiving track normal signal, output does not exist suspect's signal；
Mobile communication interface, is connected with AVR32 chip.
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