CN105606864A - Using method of automatic electricity stealing preventing watt-hour meter - Google Patents
Using method of automatic electricity stealing preventing watt-hour meter Download PDFInfo
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- CN105606864A CN105606864A CN201610180396.1A CN201610180396A CN105606864A CN 105606864 A CN105606864 A CN 105606864A CN 201610180396 A CN201610180396 A CN 201610180396A CN 105606864 A CN105606864 A CN 105606864A
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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
- G01R11/02—Constructional details
- G01R11/24—Arrangements for avoiding or indicating fraudulent use
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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
- G01R11/02—Constructional details
- G01R11/04—Housings; Supporting racks; Arrangements of terminals
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Abstract
The invention relates to an automatic electricity stealing preventing watt-hour meter, comprising a seal mobile identification device, a screw change identification device, an electrical energy detection device and a main controller, wherein the seal mobile identification device and the screw change identification device are separately used for identifying a seal on the outer frame of the watt-hour meter and the change condition of a screw, and the main controller is separately connected with the seal mobile identification device, the screw change identification device and the electrical energy detection device. The electricity stealing fact of the watt-hour meter can be automatically detected to avoid further economical loss of relevant power departments.
Description
Technical field
The present invention relates to kilowatt-hour meter field, relate in particular to a kind of user of automation Anti-current stealing electric meterMethod.
Background technology
Kilowatt-hour meter is the important instrument for measuring resident or factory's electricity consumption quantity, power supply management department rootDetermine electricity consumption one side's concrete electricity consumption quantity according to the reading of kilowatt-hour meter, the foundation using this as charge,Require electricity consumption one side to pay.
As can be seen here, the economic interests of kilowatt-hour meter and power supply management department and electricity consumption side are closely related, asThe measurement result of fruit kilowatt-hour meter is inaccurate, is easy to cause charge objective not, and overcharge, invadesThe economic interests of electricity consumption side, charge very few, damaged the economic interests of power supply management department, because ofThis, the certainty of measurement of kilowatt-hour meter must be accurate.
Meanwhile, kilowatt-hour meter is juggled things and can be realized the robber's electricity effect that changes kilowatt-hour meter reading, this is alsoPower supply management department is unwilling to see, power supply management department generally can be to kilowatt-hour meter at machinery and electronicsSome preventing fraudulent use of electricity processing are made in aspect, but, because kilowatt-hour meter is arranged on position, electricity consumption side mostlyIn near public domain, depart from for a long time the visual field of power supply management department, this provides still to robber's electricityChance.
Therefore, need a kind of automation Anti-current stealing electric meter, can detect kilowatt-hour meter in real time,In the time finding the electric situation of robber, report to the police immediately, meanwhile, can also optimize the inside of existing kilowatt-hour meterStructure, provides the measurement performance of kilowatt-hour meter.
Summary of the invention
In order to address the above problem, the invention provides a kind of automation Anti-current stealing electric meter, by rightThe internal structure de-redundancy of kilowatt-hour meter, improves the detection essence of kilowatt-hour meter to supply line's parameters of electric powerDegree, more crucial, adopt targetedly image recognition technology the envelope of kilowatt-hour meter to be detected in real timePrint and screw change conditions, thereby further judge the whether stolen electricity of kilowatt-hour meter.
According to an aspect of the present invention, provide a kind of automation Anti-current stealing electric meter, comprised that seal movesMoving identification equipment, screw variation identification equipment, electric energy detection equipment and master controller, seal moves knowledgeOther equipment and screw variation identification equipment is respectively used to identify the change of seal and screw on kilowatt-hour meter housingEmotionally condition, master controller moves identification equipment, screw variation identification equipment and electric energy inspection with seal respectivelyMeasurement equipment connects.
More specifically, in described automation Anti-current stealing electric meter, comprising: ccd image sensing equipment,Be arranged on the top of kilowatt-hour meter, take towards the housing of kilowatt-hour meter, to obtain high definition housing image;Complexity checkout equipment, is connected with ccd image sensing equipment, for receiving high definition housing image,And based on high definition housing image calculation output image complexity; Gray scale converting apparatus, schemes with CCDPicture sensing equipment connects, for receiving high definition housing image, for each in high definition housing imagePixel, extracts its R, G, B tri-Color Channel components, to R, G, B tri-Color Channel componentsGive different weighted values average to be weighted, to obtain corresponding gray value, all pixelsGray value composition gray level image, wherein the weighted value of R, G, B tri-Color Channel components is respectively0.3,0.59 and 0.11; Image filtering equipment, respectively with complexity checkout equipment and gray scale converting apparatusConnect, for determine the filtering strategies of selecting based on image complexity, when image complexity is default multipleWhen assorted degree scope lower limit is following, select gaussian filtering strategy to carry out filtering to gray level image, work as imageComplexity, in the time that default complexity range limit is above, selects mean filter strategy to enter gray level imageRow filtering, in the time that image complexity is within the scope of default complexity, selects medium filtering strategy to ashDegreeization image carries out filtering; Overall situation binaryzation equipment, respectively with complexity checkout equipment and image filteringEquipment connection, for determine definite strategy of overall binary-state threshold based on image complexity, is determiningAfter overall situation binary-state threshold, use overall binary-state threshold that gray level image is carried out to binaryzation placeReason, makes the pixel value of binary image after treatment only have 0 or 255 these two kinds of selections, Qi ZhongjiDefinite strategy of determining overall binary-state threshold in image complexity specifically comprises: when image complexity existsWhen default complexity scope lower limit is following, adopt bimodal method to determine overall binary-state threshold, when image is answeredAssorted degree, in the time that default complexity range limit is above, adopts maximum variance between clusters to determine overall binaryzationThreshold value, in the time that image complexity is within the scope of default complexity, adopts mean value method to determine the overall situation twoValue threshold value; Image correcting device,, uses to receive binary image with overall binaryzation equipment connectionIn being rotated successively, binary image proofreaies and correct processing, redundancy cutting processing and image normalization placeReason, to obtain correcting image; Profile checkout equipment, transforms and establishes with image correcting device and gray scale respectivelyStandby connection, for detecting school based on default kilowatt-hour meter housing seal profile and kilowatt-hour meter housing screw profileThe position of kilowatt-hour meter housing seal and the position of kilowatt-hour meter housing screw in positive image, and based on correction chartIn picture, the position of kilowatt-hour meter housing seal is partitioned into corresponding kilowatt-hour meter housing envelope from gray level imageWatermark image, it is right that the position based on kilowatt-hour meter housing screw in correcting image is partitioned into from gray level imageThe kilowatt-hour meter housing screw image of answering; Calibrating resistance, is a slide rheostat, and resistance value is 2M Ω,A stiff end is connected with the zero line of industrial-frequency alternating current, and sliding end is connected with one end of the second resistance; TheTwo resistance, resistance value is 1M Ω, the other end is connected with one end of the first resistance, meanwhile, the other endAs a measuring junction output of sampled voltage; The first resistance, resistance value is 1.5K Ω, the other end and workFrequently the live wire of alternating current connects; The first electric capacity, capacitance is 220pf, one end and the second resistance anotherOne end connects, other end ground connection; The 3rd resistance, resistance value is 470 Ω, one end and industrial-frequency alternating currentLive wire connect, the other end is as another measuring junction output of sampled voltage; The second electric capacity, capacitanceFor 220pf, one end is connected with the other end of the 3rd resistance, other end ground connection; The 3rd electric capacity, electric capacityValue 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 resistanceConnect; The 4th resistance, resistance value is 0.6m Ω, is inserted on the live wire of industrial-frequency alternating current i.e. two endsAll be connected with the live wire of industrial-frequency alternating current; The 5th resistance, resistance value is 470 Ω, one end and the 4th electricityOne end of resistance connects, and the other end is as a measuring junction output of sample rate current; The 6th resistance, resistance valueBe 470 Ω, be connected with the other end of the 4th resistance, the other end is as another measuring junction of sample rate currentOutput; The 4th electric capacity, capacitance is 220pf, one end is connected with the other end of the 5th resistance, anotherEnd ground connection; The 5th electric capacity, capacitance is 220pf, one end is connected with the other end of the 6th resistance, anotherOne end ground connection; The 6th electric capacity, capacitance is 0.018uf, one end is connected with the other end of the 5th resistance,The other end is connected with the other end of the 6th resistance; Capacity voltage dropping circuit, with the zero line of industrial-frequency alternating current andLive wire connects, for industrial-frequency alternating current being changed into 5V low-voltage DC, to establish as electric energy detectionStandby power supply; Electric energy detection equipment, comprises tension measuring circuit, current measurement circuit and microcontroller,Tension measuring circuit is connected respectively to detect and export industrial frequency AC with two measuring junctions of sampled voltageThe real-time sampling voltage of electricity, current measurement circuit is connected respectively to examine with two measuring junctions of sample rate currentSurvey and export the real-time sampling electric current of industrial-frequency alternating current, microcontroller respectively with tension measuring circuit and electricityFlow measurement circuit, the real-time sampling voltage based on industrial-frequency alternating current and the real-time sampling electricity of industrial-frequency alternating currentFlow, determine and export active power and the reactive power of industrial-frequency alternating current; Xegregating unit, is positioned at electric energyBetween checkout equipment and MSP430 single-chip microcomputer, adopt photoelectric coupling circuit, for realizing analog circuitPart and the isolation of digital circuit part, avoid phase mutual interference; AC/DC power-supply device, comprises transformationDevice reduction voltage circuit, full bridge rectifier, filter circuit and mu balanced circuit, with the zero line of industrial-frequency alternating currentBe connected with live wire, for the industrial-frequency alternating current of 220V being converted to the direct current of 5V or 3.3V;ZIGBEE communication interface, is connected with MSP430 single-chip microcomputer, for receiving and near wireless copyingTable equipment sends active power and reactive power; Serial erasable memory AT24C16B, has 1Ten thousand erasable circulations, are connected with MSP430 single-chip microcomputer, for receiving the active power of industrial-frequency alternating currentAnd reactive power; Seal moves identification equipment, with profile checkout equipment and serial erasable memoryAT24C16B connects, for determining kilowatt-hour meter housing seal image and default gray scale housing seal imageBetween matching degree, and determine whether to export seal movable signal based on matching degree; Screw variationIdentification equipment, is connected with profile checkout equipment and serial erasable memory AT24C16B, for reallyDetermine the matching degree between kilowatt-hour meter housing screw image and default gray scale housing screw image, and based onMatching degree determines whether to export screw variation signal; MSP430 single-chip microcomputer, by buffer circuit withElectric energy detection equipment connection, for receiving active power and the reactive power of industrial-frequency alternating current; Wherein,MSP430 single-chip microcomputer also moves identification equipment with seal and screw variation identification equipment is connected respectively, whenWhen receiving seal movable signal and receiving screw variation signal, send and steal electric confirmation signal, when onlyWhen receiving seal movable signal or receiving only screw variation signal, send and steal electric doubtful signal, whenWhen seal movable signal and screw variation signal all do not receive, send robber's electricity and deny signal; Wherein,Serial erasable memory AT24C16B is also for storing default gray scale housing seal image and default ashThe frame screw image of being outside one's consideration.
More specifically, in described automation Anti-current stealing electric meter: time division duplex communication interface, arrangesOn the housing of kilowatt-hour meter.
More specifically, in described automation Anti-current stealing electric meter: time division duplex communication interface withMSP430 single-chip microcomputer connects, for transmitting wirelessly active power and the reactive power of industrial-frequency alternating current.
More specifically, in described automation Anti-current stealing electric meter: time division duplex communication interface withMSP430 single-chip microcomputer connects, and steals electric confirmation signal, steals electric doubtful signal or steal electricity for transmitting wirelesslyDeny signal.
More specifically, in described automation Anti-current stealing electric meter: MSP430 single-chip microcomputer is arranged on electricityIn the housing of degree table.
Brief description of the drawings
Below with reference to accompanying drawing, embodiment of the present invention are described, wherein:
Fig. 1 is the structure square frame of the automation Anti-current stealing electric meter that illustrates according to an embodiment of the present inventionFigure.
Reference numeral: 1 seal moves identification equipment; 2 screw variation identification equipments; 3 electric energy detectionEquipment; 4 master controllers
Detailed description of the invention
Below with reference to accompanying drawings the embodiment of automation Anti-current stealing electric meter of the present invention is carried out in detailDescribe in detail bright.
Kilowatt-hour meter is the product that Sampling techniques, microprocessing, designing technique and experience combine, and isHigh-tech product interdisciplinary. Understanding and applicating skill that kilowatt-hour meter manufacturer designs according to self, realThe various functions of existing kilowatt-hour meter.
On kilowatt-hour meter product, possess at present multi-functional, networking, intellectuality, digitizedDemand, can meet the requirement of current various meterings, as meritorious metering, reactive measurement, requirement are calculated,The sophisticated functions such as power grid quality detection, grid event record, and can serve as communication slave station and central authorities' controlMain website processed carries out data interaction.
Current, still there is following defect for the kilowatt-hour meter of measuring electric energy service condition: (1) precisionNot high, cannot meet the data resolution that supplier of electricity and electricity consumption side require simultaneously; (2) steal electric situationHappen occasionally, can only go detection of fixed place and time to steal electric situation by artificial means and whether exist, cannot doTo the real-time detection of stealing electricity.
In order to overcome above-mentioned deficiency, the present invention has built a kind of automation Anti-current stealing electric meter, to electric degreeTable carries out structure of modification and upgrading, improves detection efficiency and the accuracy of kilowatt-hour meter, meanwhile, and at electric degreeIn the table device space, introduce real-time anti-theft electricity equipment, improve the preventing fraudulent use of electricity performance of kilowatt-hour meter.
Fig. 1 is the structure square frame of the automation Anti-current stealing electric meter that illustrates according to an embodiment of the present inventionFigure, comprises that seal moves identification equipment, screw variation identification equipment, electric energy detection equipment and main controlDevice, seal moves identification equipment and screw variation identification equipment and is respectively used to identify on kilowatt-hour meter housing and sealsThe change conditions of seal and screw, master controller moves identification equipment, screw variation identification with seal respectivelyEquipment and electric energy detection equipment connection.
Then, continue the concrete structure of automation Anti-current stealing electric meter of the present invention to carry out furtherExplanation.
Described kilowatt-hour meter comprises: ccd image sensing equipment, is arranged on the top of kilowatt-hour meter, towards electricityThe housing of degree table is taken, to obtain high definition housing image; Complexity checkout equipment, with CCDImage sensing apparatus connects, for receiving high definition housing image, and based on high definition housing image calculation alsoOutput image complexity; Gray scale converting apparatus, is connected with ccd image sensing equipment, for receivingHigh definition housing image, for each pixel in high definition housing image, extracts its R, G, BThree Color Channel components, give different weighted values to carry out to R, G, B tri-Color Channel componentsWeighted average, to obtain corresponding gray value, the gray value composition gray level image of all pixels,Wherein the weighted value of R, G, B tri-Color Channel components is respectively 0.3,0.59 and 0.11.
Described kilowatt-hour meter comprises: image filtering equipment, transforms with complexity checkout equipment and gray scale respectivelyEquipment connection, for determine the filtering strategies of selecting based on image complexity, when image complexity is in advanceIf when complexity scope lower limit is following, select gaussian filtering strategy to carry out filtering to gray level image, whenImage complexity, in the time that default complexity range limit is above, selects mean filter strategy to gray processing figurePicture carries out filtering, in the time that image complexity is within the scope of default complexity, selects medium filtering strategyGray level image is carried out to filtering.
Described kilowatt-hour meter comprises: overall binaryzation equipment, and respectively with complexity checkout equipment and image filterWave device connects, for determine definite strategy of overall binary-state threshold based on image complexity, reallyAfter fixed overall binary-state threshold, use overall binary-state threshold that gray level image is carried out to binaryzation placeReason, makes the pixel value of binary image after treatment only have 0 or 255 these two kinds of selections, Qi ZhongjiDefinite strategy of determining overall binary-state threshold in image complexity specifically comprises: when image complexity existsWhen default complexity scope lower limit is following, adopt bimodal method to determine overall binary-state threshold, when image is answeredAssorted degree, in the time that default complexity range limit is above, adopts maximum variance between clusters to determine overall binaryzationThreshold value, in the time that image complexity is within the scope of default complexity, adopts mean value method to determine the overall situation twoValue threshold value.
Described kilowatt-hour meter comprises: image correcting device, with overall binaryzation equipment connection with receive two-valueChange image, proofread and correct processing, redundancy cutting processing and image for binary image is rotated successivelyNormalized, to obtain correcting image; Profile checkout equipment, respectively with image correcting device and ashDegree converting apparatus connects, for taking turns based on default kilowatt-hour meter housing seal profile and kilowatt-hour meter housing screwThe position of kilowatt-hour meter housing seal and the position of kilowatt-hour meter housing screw in wide detection correcting image, and baseIn correcting image, the position of kilowatt-hour meter housing seal is partitioned into corresponding electric degree from gray level imageOff-balancesheet frame seal image, the position based on kilowatt-hour meter housing screw in correcting image is from gray level imageBe partitioned into corresponding kilowatt-hour meter housing screw image.
Described kilowatt-hour meter comprises: calibrating resistance is a slide rheostat, and resistance value is 2M Ω, oneIndividual stiff end is connected with the zero line of industrial-frequency alternating current, and sliding end is connected with one end of the second resistance; SecondResistance, resistance value is 1M Ω, and the other end is connected with one end of the first resistance, and meanwhile, the other end is doneFor a measuring junction output of sampled voltage; The first resistance, resistance value is 1.5K Ω, the other end and power frequencyThe live wire of alternating current connects; The first electric capacity, capacitance is 220pf, another of one end and the second resistanceEnd connects, other end ground connection; The 3rd resistance, resistance value is 470 Ω, one end and industrial-frequency alternating currentLive wire connects, and the other end is as another measuring junction output of sampled voltage.
Described kilowatt-hour meter comprises: the second electric capacity, capacitance is 220pf, one end and the 3rd resistance anotherOne end connects, other end ground connection; The 3rd electric capacity, capacitance is 0.018uf, one end and the second resistanceThe other end connects, and the other end is connected with the other end of the 3rd resistance; The 4th resistance, resistance value is 0.6mΩ, is inserted on the live wire of industrial-frequency alternating current, and two ends are all connected with the live wire of industrial-frequency alternating current; TheFive resistance, resistance value is 470 Ω, and one end is connected with one end of the 4th resistance, and the other end is as samplingOne measuring junction output of electric current; The 6th resistance, resistance value is 470 Ω, with the other end of the 4th resistanceConnect, the other end is as another measuring junction output of sample rate current.
Described kilowatt-hour meter comprises: the 4th electric capacity, capacitance is 220pf, one end and the 5th resistance anotherOne end connects, other end ground connection; The 5th electric capacity, capacitance is 220pf, one end and the 6th resistanceThe other end connects, other end ground connection; The 6th electric capacity, capacitance is 0.018uf, one end and the 5th resistanceThe other end connect, the other end is connected with the other end of the 6th resistance; Capacity voltage dropping circuit, with power frequencyThe zero line of alternating current is connected with live wire, for industrial-frequency alternating current being changed into 5V low-voltage DC, withAs the power supply of electric energy detection equipment.
Described kilowatt-hour meter comprises: electric energy detection equipment, comprises tension measuring circuit, current measurement circuitAnd microcontroller, tension measuring circuit is connected respectively to detect with two measuring junctions of sampled voltage and is defeatedGo out the real-time sampling voltage of industrial-frequency alternating current, two measuring junctions of current measurement circuit and sample rate current divideDo not connect to detect and export the real-time sampling electric current of industrial-frequency alternating current, microcontroller is surveyed with voltage respectivelyAmount circuit and current measurement circuit, the real-time sampling voltage based on industrial-frequency alternating current and industrial-frequency alternating currentReal-time sampling electric current, determines and exports active power and the reactive power of industrial-frequency alternating current; Xegregating unit,Between electric energy detection equipment and MSP430 single-chip microcomputer, adopt photoelectric coupling circuit, for realizingThe isolation of artificial circuit part and digital circuit part, avoids phase mutual interference.
Described kilowatt-hour meter comprises: AC/DC power-supply device, comprises transformer pressure-reducing circuit, full-bridge rectificationCircuit, filter circuit and mu balanced circuit, be connected with zero line and the live wire of industrial-frequency alternating current, for by 220VIndustrial-frequency alternating current be converted to the direct current of 5V or 3.3V; ZIGBEE communication interface, with MSP430Single-chip microcomputer connects, for receiving and sending active power and idle merit near radio meter register equipmentRate; Serial erasable memory AT24C16B, has 10,000 erasable circulations, mono-with MSP430Sheet machine connects, for receiving active power and the reactive power of industrial-frequency alternating current.
Described kilowatt-hour meter comprises: seal moves identification equipment, erasable with profile checkout equipment and serialMemory AT24C16B connects, for determining kilowatt-hour meter housing seal image and default gray scale housing envelopeMatching degree between watermark image, and determine whether to export seal movable signal based on matching degree; Spiral shellSilk variation identification equipment, is connected with profile checkout equipment and serial erasable memory AT24C16B,For determining the matching degree between kilowatt-hour meter housing screw image and default gray scale housing screw image,And determine whether to export screw variation signal based on matching degree.
Described kilowatt-hour meter comprises: MSP430 single-chip microcomputer, connects by buffer circuit and electric energy detection equipmentConnect, for receiving active power and the reactive power of industrial-frequency alternating current; Wherein, MSP430 single-chip microcomputerAlso move identification equipment and screw variation identification equipment with seal and be connected respectively, move when receiving sealSignal and while receiving screw variation signal, sends and steals electric confirmation signal, moves when receiving only sealSignal or while receiving only screw variation signal, sends and steals electric doubtful signal, when seal movable signal andWhen screw variation signal does not all receive, send robber's electricity and deny signal.
Wherein, serial erasable memory AT24C16B is also for storing default gray scale housing seal figurePicture and default gray scale housing screw image.
Alternatively, in described kilowatt-hour meter: time division duplex communication interface, is arranged on the housing of kilowatt-hour meterOn; Time division duplex communication interface is connected with MSP430 single-chip microcomputer, for transmitting wirelessly industrial-frequency alternating currentActive power and reactive power; Time division duplex communication interface is connected with MSP430 single-chip microcomputer, forWireless transmission is stolen electric confirmation signal, is stolen electric doubtful signal or steal electricity and deny signal; And can be byMSP430 single-chip microcomputer is arranged in the housing of kilowatt-hour meter.
In addition, 4GLTE is the standard of a global general-use, comprise two kinds of network schemer FDD andTDD, is respectively used to paired frequency spectrum and non-paired frequency spectrum. Operator is getting between two patterns at firstHouse is pure in the consideration to spectrum availability. Large multi-operator will be disposed two kinds of networks simultaneously, withJust make full use of all frequency spectrum resources that it has. FDD and TDD distinguish in fact very little technically,The main distinction is just to adopt different duplex modes, FDD (FDD) and time division duplex (TDD)Two kinds of different duplex modes.
FDD receives and sends on two symmetrical frequency channels that separate, next by protection frequency rangeSeparate and receive and transmitting channel. FDD must adopt paired frequency, relies on frequency to carry out differentiating uplink and downlinkLink, its unidirectional resource is continuous in time. FDD, in the time supporting symmetrical service, can fillDivide the frequency spectrum that utilizes up-downgoing, but in the time supporting non-symmetrical service, the availability of frequency spectrum will reduce greatly.
TDD separated and receives and transmitting channel with the time. In the GSM of TDD mode,Receive and send the different time-gap that uses same frequency carrier as the carrying of channel, its unidirectional moneySource is discontinuous in time, and time resource distributes on both direction. Certain time periodSend a signal to travelling carriage by base station, the other time sends a signal to base station by travelling carriage, base station andHarmoniously work smoothly between travelling carriage.
Adopt automation Anti-current stealing electric meter of the present invention, for prior art kilowatt-hour meter precision not high andTechnical problem that cannot real-time anti-theft electricity, is optimized by the measurement mechanism to kilowatt-hour meter, improves and surveysThe accuracy of amount, has also introduced seal checkout equipment and screw detecting equipment based on image processing, usesThe change conditions of seal and screw on identification kilowatt-hour meter housing, and based on seal on kilowatt-hour meter housing andThe change conditions of screw is made the whether alarm operation of stolen electricity of kilowatt-hour meter in real time.
Be understandable that, although the present invention disclose as above with preferred embodiment, but above-mentioned enforcementExample is not in order to limit the present invention. For any those of ordinary skill in the art, do not departing fromIn technical solution of the present invention scope situation, all can utilize the technology contents of above-mentioned announcement to the technology of the present inventionScheme is made many possible variations and modification, or is revised as the equivalent embodiment of equivalent variations. Therefore,Every content that does not depart from technical solution of the present invention, foundation technical spirit of the present invention is to above embodimentAny simple modification, equivalent variations and the modification done, all still belong to technical solution of the present invention protectionIn scope.
Claims (6)
1. a using method for automation Anti-current stealing electric meter, the method comprises:
1) provide a kind of automation Anti-current stealing electric meter, comprise that seal moves identification equipment, screw becomesMoving identification equipment, electric energy detection equipment and master controller, seal moves identification equipment and screw variation is knownOther equipment is respectively used to identify the change conditions of seal and screw on kilowatt-hour meter housing, and master controller respectivelyMove identification equipment, screw variation identification equipment and electric energy detection equipment connection with seal;
2) use this kilowatt-hour meter.
2. the method for claim 1, is characterized in that, described kilowatt-hour meter comprises:
Ccd image sensing equipment, is arranged on the top of kilowatt-hour meter, claps towards the housing of kilowatt-hour meterTake the photograph, to obtain high definition housing image;
Complexity checkout equipment, is connected with ccd image sensing equipment, for receiving the outer block diagram of high definitionPicture, and based on high definition housing image calculation output image complexity;
Gray scale converting apparatus, is connected with ccd image sensing equipment, for receiving high definition housing image,For each pixel in high definition housing image, extract its R, G, B tri-Color Channel components,Give different weighted values to R, G, B tri-Color Channel components average to be weighted, to obtainCorresponding gray value, gray value composition gray level image, wherein R, G, the B tri-of all pixelsThe weighted value of Color Channel component is respectively 0.3,0.59 and 0.11;
Image filtering equipment, is connected with complexity checkout equipment and gray scale converting apparatus respectively, for baseDetermine the filtering strategies of selecting in image complexity, when image complexity is at default complexity scope lower limitWhen following, select gaussian filtering strategy to carry out filtering to gray level image, when image complexity is defaultWhen complexity range limit is above, select mean filter strategy to carry out filtering to gray level image, work as figurePicture complexity, in the time presetting within the scope of complexity, selects medium filtering strategy to carry out gray level imageFiltering;
Overall situation binaryzation equipment, respectively with complexity checkout equipment and image filtering equipment connection, forDetermine definite strategy of overall binary-state threshold based on image complexity, at definite overall binary-state thresholdAfterwards, use overall binary-state threshold that gray level image is carried out to binary conversion treatment, make after treatmentThe pixel value of binary image only has 0 or 255 these two kinds of selections, wherein determines based on image complexityDefinite strategy of overall situation binary-state threshold specifically comprises: when image complexity is under default complexity scopeWhen limit is following, adopt bimodal method to determine overall binary-state threshold, when image complexity is in default complexityWhen range limit is above, adopt maximum variance between clusters to determine overall binary-state threshold, when image complexityDegree, in the time presetting within the scope of complexity, adopts mean value method to determine overall binary-state threshold;
Image correcting device, with overall binaryzation equipment connection to receive binary image, for to twoValue image is rotated successively proofreaies and correct processing, redundancy cutting processing and image normalization processing, to obtainObtain correcting image;
Profile checkout equipment, is connected with image correcting device and gray scale converting apparatus respectively, for based onDefault kilowatt-hour meter housing seal profile and kilowatt-hour meter housing screw profile detect kilowatt-hour meter in correcting imageThe position of the position of housing seal and kilowatt-hour meter housing screw, and based on kilowatt-hour meter housing in correcting imageThe position of seal is partitioned into corresponding kilowatt-hour meter housing seal image from gray level image, based on correctionIn image, the position of kilowatt-hour meter housing screw is partitioned into corresponding kilowatt-hour meter housing from gray level imageScrew image;
Calibrating resistance, is a slide rheostat, and resistance value is 2M Ω, and stiff end and power frequency are handed overFlow electric zero line and connect, sliding end is connected with one end of the second resistance;
The second resistance, resistance value is 1M Ω, the other end is connected with one end of the first resistance, meanwhile,The other end is as a measuring junction output of sampled voltage;
The first resistance, resistance value is 1.5K Ω, the other end is connected with the live wire of industrial-frequency alternating current;
The first electric capacity, capacitance is 220pf, one end is connected with the other end of the second resistance, the other endGround connection;
The 3rd resistance, resistance value is 470 Ω, one end is connected with the live wire of industrial-frequency alternating current, the other endAs another measuring junction output of sampled voltage;
The second electric capacity, capacitance is 220pf, one end is connected with the other end of the 3rd resistance, the other endGround connection;
The 3rd electric capacity, capacitance is 0.018uf, one end is connected with the other end of the second resistance, the other endBe connected with the other end of the 3rd resistance;
The 4th resistance, resistance value is 0.6m Ω, is inserted on the live wire of industrial-frequency alternating current, two ends are allBe connected with the live wire of industrial-frequency alternating current;
The 5th resistance, resistance value is 470 Ω, and one end is connected with one end of the 4th resistance, and the other end is doneFor a measuring junction output of sample rate current;
The 6th resistance, resistance value is 470 Ω, is connected other end conduct with the other end of the 4th resistanceAnother measuring junction output of sample rate current;
The 4th electric capacity, capacitance is 220pf, one end is connected with the other end of the 5th resistance, the other endGround connection;
The 5th electric capacity, capacitance is 220pf, one end is connected with the other end of the 6th resistance, the other endGround connection;
The 6th electric capacity, capacitance is 0.018uf, one end is connected with the other end of the 5th resistance, the other endBe 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 currentChange 5V low-voltage DC into, with the power supply as electric energy detection equipment;
Electric energy detection equipment, comprises tension measuring circuit, current measurement circuit and microcontroller, voltageMeasuring circuit and two measuring junctions of sampled voltage are connected respectively to detect and export industrial-frequency alternating currentReal-time sampling voltage, current measurement circuit is connected respectively to detect also with two measuring junctions of sample rate currentThe real-time sampling electric current of output industrial-frequency alternating current, microcontroller is surveyed with tension measuring circuit and electric current respectivelyAmount circuit, the 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 MSP430 single-chip microcomputer, adopts photoelectric couplingCircuit, for realizing the isolation of artificial circuit part and digital circuit part, avoids phase mutual interference;
AC/DC power-supply device, comprise transformer pressure-reducing circuit, full bridge rectifier, filter circuit andMu balanced circuit, is connected with zero line and the live wire of industrial-frequency alternating current, for by the industrial-frequency alternating current of 220VBe converted to the direct current of 5V or 3.3V;
ZIGBEE communication interface, is connected with MSP430 single-chip microcomputer, for receiving and near nothingLine kilowatt meter recorder sends active power and reactive power;
Serial erasable memory AT24C16B, has 10,000 erasable circulations, mono-with MSP430Sheet machine connects, for receiving active power and the reactive power of industrial-frequency alternating current;
Seal moves identification equipment, with profile checkout equipment and serial erasable memory AT24C16BConnect, for determining the coupling between kilowatt-hour meter housing seal image and default gray scale housing seal imageDegree, and determine whether to export seal movable signal based on matching degree;
Screw variation identification equipment, with profile checkout equipment and serial erasable memory AT24C16BConnect, for determining the coupling between kilowatt-hour meter housing screw image and default gray scale housing screw imageDegree, and determine whether to export screw variation signal based on matching degree;
MSP430 single-chip microcomputer, by buffer circuit and electric energy detection equipment connection, for receiving power frequencyThe active power of alternating current and reactive power;
Wherein, MSP430 single-chip microcomputer also moves identification equipment and screw variation identification equipment with seal and dividesNot Lian Jie, in the time receiving seal movable signal and receive screw variation signal, send and steal electricity and confirmSignal, in the time receiving only seal movable signal or receive only screw variation signal, sends and steals electric doubtingLikelihood signal, in the time that seal movable signal and screw variation signal does not all receive, sends and steals electricity and deny letterNumber;
Wherein, serial erasable memory AT24C16B is also for storing default gray scale housing seal figurePicture and default gray scale housing screw image.
3. method as claimed in claim 2, is characterized in that, also comprises:
Time division duplex communication interface, is arranged on the housing of kilowatt-hour meter.
4. method as claimed in claim 3, is characterized in that:
Time division duplex communication interface is connected with MSP430 single-chip microcomputer, for transmitting wirelessly industrial-frequency alternating currentActive power and reactive power.
5. method as claimed in claim 3, is characterized in that:
Time division duplex communication interface is connected with MSP430 single-chip microcomputer, steals electric confirmation letter for transmitting wirelesslyNumber, steal electric doubtful signal or steal electricity deny signal.
6. the method as described in as arbitrary in claim 2-5, is characterized in that:
MSP430 single-chip microcomputer is arranged in the housing of kilowatt-hour meter.
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| CN201610180396.1A CN105606864A (en) | 2016-03-25 | 2016-03-25 | Using method of automatic electricity stealing preventing watt-hour meter |
| CN201610413879.1A CN105866497A (en) | 2016-03-25 | 2016-03-25 | Automatic electricity-stealing-preventing electric meter |
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| CN109708721A (en) * | 2019-01-12 | 2019-05-03 | 王涛 | Wisdom water supply acquisition method |
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