CN105891765B - Ammeter defect Intelligent testing equipment - Google Patents
Ammeter defect Intelligent testing equipment Download PDFInfo
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- CN105891765B CN105891765B CN201610287028.7A CN201610287028A CN105891765B CN 105891765 B CN105891765 B CN 105891765B CN 201610287028 A CN201610287028 A CN 201610287028A CN 105891765 B CN105891765 B CN 105891765B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/50—Context or environment of the image
- G06V20/52—Surveillance or monitoring of activities, e.g. for recognising suspicious objects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/10—Character recognition
- G06V30/14—Image acquisition
- G06V30/148—Segmentation of character regions
- G06V30/153—Segmentation of character regions using recognition of characters or words
Abstract
The present invention relates to a kind of ammeter defect Intelligent testing equipments, including infrared communication interface, high-definition camera, visual detector and embeded processor, infrared communication interface is used to send test signal to detected ammeter, the test character string that its display screen display test signal includes is controlled in order to be detected ammeter, high-definition camera is used to shoot to export test image the display screen for being detected ammeter, visual detector is connect with high-definition camera, for carrying out image procossing to test image, to identify the character string in test image and be exported as identification string, embeded processor is connect with visual detector, for identification string to be compared with test character string, to determine whether to send out defect alarm signal.By means of the invention it is possible to completely automatically realize that the display defect of display screen detects to each ammeter, reduce cost of labor and time cost.
Description
It is on March 8th, 2015 that the present invention, which is application No. is the 201510100771.2, applying date, entitled " ammeter lacks
The divisional application of the patent of sunken Intelligent testing equipment ".
Technical field
The present invention relates to power supply unit management domain more particularly to a kind of ammeter defect Intelligent testing equipments.
Background technology
Ammeter is the abbreviation of electric energy meter, is the instrument for measuring electric energy, also known as kilowatt-hour meter, energy meter, electric energy meter, kilowatt
Hour table.Ammeter is that power supply management department is used for detecting each electricity unit or the measuring equipment of personal used electric energy, be to
Each electricity unit or the personal foundation charged.
The information of ammeter is mainly conveyed by its display screen.In the production process of ammeter, display screen or processing
Equipment or transmission device inevitably will appear defect, and the display of display screen is caused not meet expection, and existing defects seriously affect metering
The reception and registration of information.Therefore, display defect detection is being carried out to the ammeter reported for repairment to determine that ammeter is extremely important with the presence or absence of defect.
Display defect detection is carried out to the ammeter reported for repairment in the prior art and mainly uses manual detection mode, detects process
More, the step of testing staff needs input, is complicated, and the accuracy of detection and efficiency is not high, even if there is the detection of some electronics to set
It is standby, also suffer from that ammeter type is complicated, display defect detection is difficult to the awkward situation carried out, in this way, these existing detection of electrons are set
Standby poor universality, detection process are difficult to rational.
Therefore, it is necessary to a kind of new ammeter defect detection equipments based on detection of electrons, substitute complicated inefficient artificial inspection
Survey mode, is transformed the electron detection device of existing poor compatibility, quickly and efficiently completes the display to various types ammeter and lacks
Sunken detection.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of ammeter defect Intelligent testing equipments, using image procossing
Technology detects the profile of ammeter first, and to determine the type of ammeter, the detection of ammeter display defect is determined according to the type of ammeter
Parameters, and the information exchange between ammeter and detection device is realized using Infrared Transmission mode, improve ammeter defects detection
Versatility and intelligence degree.
According to an aspect of the present invention, a kind of ammeter defect Intelligent testing equipment is provided, the detection device includes
Infrared communication interface, high-definition camera, visual detector and embeded processor, the infrared communication interface are used for detected
Ammeter sends test signal, in order to which the detected ammeter controls the test word that its display screen shows that the test signal includes
Symbol string, the high-definition camera is for shooting the display screen of the detected ammeter to export test image, the figure
Picture detector is connect with the high-definition camera, for carrying out image procossing to the test image, to identify the test chart
Character string as in is simultaneously exported as identification string, and the embeded processor connect with described image detector, is used for general
The identification string is compared with the test character string, to determine whether to send out defect alarm signal.
More specifically, in the ammeter defect Intelligent testing equipment, further include：Reset unit is used for the inspection
Each electronic unit in measurement equipment is restored to default conditions, and the default conditions of each electronic unit are the detection device
The state that manufacturer sets when the detection device dispatches from the factory；Static memory, the ammeter for prestoring various species
Benchmark image template, the benchmark image template of the ammeter of each type is to be shot in advance to the master meter of each type
The pattern obtained, the static memory have also prestored ammeter information table, and the ammeter information table is with ammeter type
Index saves infrared communication address, test character string, character upper limit gray threshold and the character lower limit gray scale of each ammeter
Threshold value, the character upper limit gray threshold and the character lower limit gray threshold are used to that the display of type ammeter will to be corresponded in image
Character on screen is detached with image background；Image secondary light source, including luminance sensor and lighting source, the luminance sensor
For detecting ambient brightness, the lighting source is connect with the luminance sensor, it is adjusted for being based on the ambient brightness
Illumination light intensity providing, for assisting high-definition camera to shoot；Alarm appliance is connect with the embeded processor, packet
Loud speaker and alarm LED light are included, the loud speaker warns file, institute for playing language corresponding with the defect alarm signal
Alarm LED light is stated for being displayed in red when receiving the defect alarm signal, is shown when receiving zero defect standby signal
Show green；The high-definition camera includes optical filter, camera lens and CMOS visual sensors, the camera lens be located at the optical filter and
Position between the CMOS visual sensors, the high-definition camera is for clapping the display screen of the detected ammeter
It takes the photograph and is additionally operable to shoot the shape of the detected ammeter to export contour images, the test to export test image
The resolution ratio of image and the contour images is all 1920 × 1080；Described image detector is connect with the high-definition camera,
Including ammeter type identification unit, contrast enhancement unit, wavelet filtering unit, gray processing processing unit, Character segmentation unit
And character recognition unit, it is the ammeter type identification unit, the contrast enhancement unit, the wavelet filtering unit, described
Different fpga chips, which is respectively adopted, in gray processing processing unit, the Character segmentation unit and the character recognition unit comes in fact
Existing, the ammeter type identification unit is separately connected with the high-definition camera and the static memory, by the profile diagram
As being matched one by one with the benchmark image template of the ammeter of the various species, by the corresponding electricity of benchmark image template of successful match
Table type as having determined ammeter type and be output in the static memory to be preserved, the contrast enhancement unit with it is described
High-definition camera connection to the test image to carry out contrast enhancement processing, to obtain enhancing image, the wavelet filtering
Unit is connect with the contrast enhancement unit to carry out wavelet filtering processing to the enhancing image, to obtain filtering image,
The gray processing processing unit is connect with the wavelet filtering unit, and gray processing processing is carried out to the filtering image, to obtain
Gray level image, the Character segmentation unit are separately connected with the gray processing processing unit and the static memory, by institute
Gray value in gray level image is stated to determine character upper limit gray threshold and determining the pixel knowledge between character lower limit gray threshold
Not and multiple character subgraphs are formed, the character recognition unit is connect with the Character segmentation unit, is known based on scheduled OCR
Other algorithm identifies each corresponding character of character subgraph, and according to each character subgraph in the gray level image
In the multiple characters that will identify that of position be combined, to obtain the identification string；The embeded processor and institute
Each unit, the static memory, the high-definition camera and the infrared communication interface for stating visual detector connect respectively
Connect, control the high-definition camera first and shoot the contour images, control the ammeter type identification unit identify it is described
Determine ammeter type, then, determines ammeter information table described in ammeter type search based on described in the static memory, with
The corresponding infrared communication address of ammeter type, test character string, character upper limit gray threshold and character lower limit have been determined described in obtaining
Gray threshold and respectively as having determined infrared communication address, the character string of location survey examination, determined character upper limit gray threshold and determined
Character lower limit gray threshold is saved in static memory, controls the infrared communication interface to having determined infrared communication address
Detected ammeter send include the examination of the location survey character string test signal, in order to which to control it aobvious for the detected ammeter
Display screen shows the examination character string of location survey that the test signal includes, described in the embeded processor controls after preset time
High-definition camera shoots test image, and starts the contrast enhancement unit, the wavelet filtering unit, at the gray processing
Reason unit, the Character segmentation unit and the character recognition unit are to obtain the identification string, and by the identification word
Symbol string matches with the examination of the location survey character string preserved in the static memory, and successful match then sends out zero defect prompt letter
Number, it fails to match then sends out defect alarm signal.
More specifically, in the ammeter defect Intelligent testing equipment, further include：Bar code resolver, to detect quilt
The bar code posted on detection ammeter obtains the address name and station address of corresponding detected ammeter ownership.
More specifically, in the ammeter defect Intelligent testing equipment, further include：Wireless communication interface, and it is described embedding
Enter formula processor to connect with the bar code resolver, with when receiving the defect alarm signal by the address name and
The station address is wirelessly transmitted to the power supply management platform of distal end.
More specifically, in the ammeter defect Intelligent testing equipment, the confession of the wireless communication interface wireless connection
Fulgurite platform is the server belonging to power supply management department.
More specifically, in the ammeter defect Intelligent testing equipment, further include：USB communication interface, being used for will be external
The benchmark image template and ammeter information table of the ammeter of various species in USB flash disk are forwarded to the static memory and are protected
It deposits.
More specifically, in the ammeter defect Intelligent testing equipment：The preset time is 2 seconds.
Description of the drawings
Embodiment of the present invention is described below with reference to attached drawing, wherein：
Fig. 1 is the block diagram according to the ammeter defect Intelligent testing equipment shown in embodiment of the present invention.
Fig. 2 is the knot according to the camera shooting secondary light source of the ammeter defect Intelligent testing equipment shown in embodiment of the present invention
Structure block diagram.
Specific implementation mode
The embodiment of the ammeter defect Intelligent testing equipment of the present invention is described in detail below with reference to accompanying drawings.
Ammeter is widely used, and is the most basic measuring terminal of power supply management division management user power utilization, each use
Electric user is required for one ammeter of installation with its electricity consumption amount of real time measure, thus, the demand of ammeter is especially big, the city of ammeter
Field is also very active.
Common ammeter can have following several mode classifications on Vehicles Collected from Market：(1) purposes is pressed：Industry and utility meters, electricity
Substandard table, maximum demand meter, multi tariff table；(2) structure and operation principle are pressed：Induction type (mechanical), state type (electronics
Formula), electromechanical (hybrid)；(3) access power supply natures are pressed：Alternating-current meter, direct current table；(4) class of accuracy is pressed：It is common common
Table：0.2S, 0.5S, 0.2,0.5,1.0,2.0 etc.；(5) the installation mode of connection is pressed：Direct access, indirect access type；(6) it presses
Electrical equipment：Single-phase, phase three-wire three, three-phase and four-line electric energy meter.
When user reports the reading of ammeter display screen for repairment there are query or power supply management department arranges work personnel
When the ammeter for managing it carries out daily maintenance, it is required for checking ammeter using ammeter defect detection equipment, due to
Ammeter enormous amount, therefore the detection efficiency of ammeter defect detection equipment, accuracy and cost performance require harshness.Existing people
Work detection mode or simple detection of electrons mode can not meet the current demand of power supply management department.
The present invention has built a kind of ammeter defect Intelligent testing equipment, is primarily based on image recognition technology and judges ammeter class
Type takes differentiated display defect identification technology to be based on different types of ammeter, while infrared communication technique and various having
The detection to ammeter display defect is accurately, reliable completed in the targetedly introducing of character recognition technologies.
Fig. 1 is the block diagram according to the ammeter defect Intelligent testing equipment shown in embodiment of the present invention, described
Detection device includes infrared communication interface 1, high-definition camera 3, visual detector 4 and embeded processor 2, the embedded place
Reason device 2 is separately connected with the infrared communication interface 1, the high-definition camera 3 and described image detector 4, and the high definition is taken the photograph
As head 3 is connect with described image detector 4.
Wherein, the infrared communication interface 1 is used to send test signal to detected ammeter, in order to the detected electricity
Table controls its display screen and shows that the test character string that the test signal includes, the high-definition camera 3 are used for described tested
The display screen for surveying ammeter is shot to export test image, described image detector 4 with for being carried out to the test image
Image procossing, to identify the character string in the test image and be exported as identification string, the embeded processor 2 is used
In the identification string to be compared with the test character string, to determine whether to send out defect alarm signal.
Then, continue that the concrete structure of the ammeter defect Intelligent testing equipment of the present invention is further detailed.
The detection device further includes：Reset unit, for each electronic unit in the detection device to be restored to
Default conditions, the default conditions of each electronic unit are the detection device manufacturer when the detection device dispatches from the factory
The state of setting.
The detection device further includes：Static memory, the benchmark image mould of the ammeter for prestoring various species
The benchmark image template of plate, the ammeter of each type shoots obtained figure in advance for the master meter to each type
Case, the static memory have also prestored ammeter information table, and the ammeter information table is index with ammeter type, is saved
Infrared communication address, test character string, character upper limit gray threshold and the character lower limit gray threshold of each ammeter, the word
It accords with upper limit gray threshold and the character lower limit gray threshold is used for the character on the display screen for corresponding to type ammeter in image
It is detached with image background.
As shown in Fig. 2, the detection device further includes：Image secondary light source 5, including luminance sensor 51 and lighting source
52, for detecting ambient brightness, the lighting source 52 connect with the luminance sensor 51, is used for the luminance sensor 51
Illumination light intensity that it is provided, for assisting high-definition camera to shoot is adjusted based on the ambient brightness.
The detection device further includes：Alarm appliance is connect with the embeded processor 2, including loud speaker and alarm
LED light, the loud speaker warn file, the alarm LED light to use for playing language corresponding with the defect alarm signal
It is displayed in red in when receiving the defect alarm signal, green is shown when receiving zero defect standby signal.
The high-definition camera 3 includes optical filter, camera lens and CMOS visual sensors, and the camera lens is located at the optical filter
Position between the CMOS visual sensors, the high-definition camera 3 be used for the display screen of the detected ammeter into
Row shooting is additionally operable to shoot the shape of the detected ammeter to export contour images to export test image, described
Test image and the resolution ratio of the contour images are all 1920 × 1080.
Described image detector 4 is connect with the high-definition camera 3, and described image detector 4 includes ammeter type identification
Unit, contrast enhancement unit, wavelet filtering unit, gray processing processing unit, Character segmentation unit and character recognition unit, institute
State ammeter type identification unit, the contrast enhancement unit, the wavelet filtering unit, the gray processing processing unit, institute
It states Character segmentation unit and different fpga chips is respectively adopted to realize in the character recognition unit.
The ammeter type identification unit is separately connected with the high-definition camera 3 and the static memory, will be described
Contour images match one by one with the benchmark image template of the ammeter of the various species, by the benchmark image template pair of successful match
The ammeter type answered is as having determined ammeter type and be output in the static memory to be preserved.
The contrast enhancement unit is connect with the high-definition camera 3 to carry out contrast enhancing to the test image
Processing, to obtain enhancing image, the wavelet filtering unit is connect with the contrast enhancement unit with to the enhancing image
Wavelet filtering processing is carried out, to obtain filtering image, the gray processing processing unit is connect with the wavelet filtering unit, to institute
It states filtering image and carries out gray processing processing, to obtain gray level image, the Character segmentation unit and gray processing processing are single
The first and described static memory is separately connected, and gray value in the gray level image is being determined character upper limit gray threshold and
Determine the pixel between character lower limit gray threshold and identifies and form multiple character subgraphs, the character recognition unit and the word
Cutting unit connection is accorded with, each corresponding character of character subgraph is identified based on scheduled OCR recognizers, and according to every
Multiple characters that position of one character subgraph in the gray level image will identify that are combined, to obtain the knowledge
Other character string.
Each unit, the static memory, the high definition of the embeded processor 2 and described image detector 4
Camera 3 and the infrared communication interface 1 are separately connected, and are controlled the high-definition camera 3 first and are shot the contour images, control
It makes the ammeter type identification unit and identifies and described determined ammeter type.
Then, ammeter information table described in ammeter type search has been determined based on described in the static memory, to obtain
It is described to have determined the corresponding infrared communication address of ammeter type, test character string, character upper limit gray threshold and character lower limit gray scale
Threshold value and respectively as having determined infrared communication address, the character string of location survey examination, determined character upper limit gray threshold and determined character
Lower limit gray threshold is saved in static memory.
Later, the embeded processor 2 controls the infrared communication interface 1 to the quilt for having determined infrared communication address
It detects ammeter and sends the test signal for including the examination of the location survey character string, in order to which the detected ammeter controls its display screen
Show the examination character string of location survey that the test signal includes.
Finally, the embeded processor 2 controls the high-definition camera 3 after preset time and shoots test image, and
Start the contrast enhancement unit, the wavelet filtering unit, the gray processing processing unit, the Character segmentation unit and
The character recognition unit is preserved the identification string with the static memory with obtaining the identification string
Location survey examination character string match, successful match then sends out zero defect standby signal, and it fails to match then sends out defect alarm signal
Number.
Wherein, the detection device can also include：Bar code resolver, to detect the item for being detected and being posted on ammeter
Shape code obtains the address name and station address of corresponding detected ammeter ownership；Wireless communication interface, with the embedded place
Reason device 2 is connected with the bar code resolver, with when receiving the defect alarm signal by the address name and described
Station address is wirelessly transmitted to the power supply management platform of distal end, and the power supply management platform that the wireless communication interface is wirelessly connected can
Think the server belonging to power supply management department.
Wherein, the detection device can also include：USB communication interface is used for the electricity of the various species in external USB flash disk
The benchmark image template and ammeter information table of table are forwarded to the static memory and are preserved, and optionally, described pre-
If the time is 2 seconds.
In addition, infrared communication is a kind of communication mode using infrared transmission information, can be used for transmitting language, text
The information such as word, data, image.The angle of infrared transmission has certain limitations, and infrared wavelength range is 0.70 μm of -1mm, wherein
The wave in 300 μm of regions -1mm is also referred to as submillimeter wave.Air is absorbed to the influence of infrared radiation transmission mainly and scattering.
Infrared communication is using the infrared ray of 950nm near infrared bands as the media for transmitting information, i.e. communication channel.Hair
Base band binary signal is modulated to a series of burst signal by sending end, emits infrared signal by infrared transmitting tube.It receives
The light arteries and veins received is converted into electric signal by end, is demodulated, is restored using demodulator circuit is given after the processing such as amplification, filtering
To be exported after binary digital signal.There are commonly realize the pulsewidth modulation (PWM) of signal modulation by pulse width and lead to
Time interval between extra pulse string realizes pulse time modulation (PPM) two methods of signal modulation.
Infrared-ray communication technology includes following specification：IrPHY,IrLAP,IrLMP,IrCOMM,TinyTP,IrOBEX,
IrLAN and IrSimple.
Wherein, IrDA1.0 standards abbreviation SIR (Serial Infrared, serial infrared agreement), he is to be based on HP-SIR
A kind of asynchronous, the semiduplex over the horizon communication system that developed, he is with the asynchronous communication transceiver (Universal of system
Asynchronous Receiver/Transmitter, UART) it relies on, by waveform compression to serial data pulse and right
The waveform of the optical signal electric pulse received extends this encoding-decoding process (3/16EnDec) and realizes infrared data transmission.SIR's
Peak data rate only has 115.2kbps.In 1996, IrDA1.1 agreements have been issued, and abbreviation FIR (FastInfrared, soon
Fast infrared protocol), using 4PPM (Pulse Position Modulation, displacement modulation) coding and decoding mechanism, highest number
4Mbps is can reach according to transmission rate, while retaining the regulation of 1.0 standards in low speed.Later, IrDA is proposed highest communication again
Rate and is included in IrDA1.1 standards in VFIR (Very Fast Infrared) technology of 16Mbps as supplement.
IrDA standards all include three basic specifications and agreement：Infrared physical layer connects specification IrPHY (Infrared
Physical Layer Link Specification), infrared connection access protocol IrLAP (Infrared Link Access
Protoco1) and infrared connection management agreement IrLMP Infrared Link Management Protoco1).IrPHY specifications
The target in infrared communication hardware design and requirement are worked out；IrLAP and IrLMP is two software layers, is responsible for carrying out connection
Setting, management and maintenance.On the basis of IrLAP and IrLMP, for some specific infrared communication application fields, the also lands IrDA
The supervention cloth infrared protocol of some higher levels, such as TinyTP, IrOBEX, IrCOMM, IrLAN, IrTran-P and IrBus
Deng.
Ammeter defect Intelligent testing equipment using the present invention is low for existing ammeter defect detecting technique detection efficiency
Under, detection poor compatibility and the low technical problem of accuracy of detection, the type for being detected ammeter is identified first, then according to ammeter
Type determines different inspection policies, wherein the information for ensureing to be detected between ammeter and detection device using infrared communication technique
High-precision to all kinds of ammeter display defects, efficient full-automatic detection are realized in interaction.
It is understood that although the present invention has been disclosed in the preferred embodiments as above, above-described embodiment not to
Limit the present invention.For any person skilled in the art, without departing from the scope of the technical proposal of the invention,
Many possible changes and modifications all are made to technical solution of the present invention using the technology contents of the disclosure above, or are revised as
With the equivalent embodiment of variation.Therefore, every content without departing from technical solution of the present invention is right according to the technical essence of the invention
Any simple modifications, equivalents, and modifications made for any of the above embodiments still fall within the range of technical solution of the present invention protection
It is interior.
Claims (1)
1. a kind of ammeter defect Intelligent testing equipment, the detection device includes infrared communication interface, high-definition camera, image
Detector and embeded processor, the infrared communication interface is used to send test signal to detected ammeter, in order to described
Detected ammeter controls its display screen and shows that the test character string that the test signal includes, the high-definition camera are used for institute
The display screen for stating detected ammeter is shot to export test image, and described image detector connects with the high-definition camera
Connect, for the test image carry out image procossing, using identify the character string in the test image and as identification character
String output, the embeded processor are connect with described image detector, are used for the identification string and the test word
Symbol string is compared, to determine whether to send out defect alarm signal；
It is characterized in that, the detection device further includes：
Reset unit, for each electronic unit in the detection device to be restored to default conditions, each ministry of electronics industry
The default conditions of part are the state that the detection device manufacturer sets when the detection device dispatches from the factory；
Static memory, the benchmark image template of the ammeter for prestoring various species, the base of the ammeter of each type
Quasi- image template for the master meter to each type, also deposit in advance in advance by the obtained pattern of shooting, the static memory
Stored up ammeter information table, the ammeter information table is index with ammeter type, save each ammeter infrared communication address,
Test character string, character upper limit gray threshold and character lower limit gray threshold, the character upper limit gray threshold and the character
Lower limit gray threshold is for detaching the character on the display screen for corresponding to type ammeter in image with image background；
Secondary light source, including luminance sensor and lighting source are imaged, the luminance sensor is described for detecting ambient brightness
Lighting source is connect with the luminance sensor, for based on the ambient brightness adjust its offer, for assisting high definition to take the photograph
The illumination light intensity shot as head；
Alarm appliance is connect with the embeded processor, including loud speaker and alarm LED light, and the loud speaker is for playing
Language corresponding with the defect alarm signal warns file, and the alarm LED light is for receiving the defect alarm signal
Number when be displayed in red, green is shown when receiving zero defect standby signal；
The high-definition camera includes optical filter, camera lens and CMOS visual sensors, and the camera lens is located at the optical filter and institute
The position between CMOS visual sensors is stated, the high-definition camera is for shooting the display screen of the detected ammeter
To export test image, it is additionally operable to shoot the shape of the detected ammeter to export contour images, the test chart
The resolution ratio of picture and the contour images is all 1920 × 1080；
Described image detector is connect with the high-definition camera, including ammeter type identification unit, contrast enhancement unit, small
Wave filter unit, gray processing processing unit, Character segmentation unit and character recognition unit, the ammeter type identification unit, institute
State contrast enhancement unit, the wavelet filtering unit, the gray processing processing unit, the Character segmentation unit and the word
Different fpga chips is respectively adopted to realize in symbol recognition unit, the ammeter type identification unit and the high-definition camera and
The static memory is separately connected, one by one by the benchmark image template of the contour images and the ammeter of the various species
Match, the static memory is output to using the corresponding ammeter type of the benchmark image template of successful match as ammeter type has been determined
In preserved, the contrast enhancement unit connect with the high-definition camera with to the test image carry out contrast increasing
Strength is managed, and to obtain enhancing image, the wavelet filtering unit is connect with the contrast enhancement unit to scheme to the enhancing
As carrying out wavelet filtering processing, to obtain filtering image, the gray processing processing unit is connect with the wavelet filtering unit, right
The filtering image carries out gray processing processing, and to obtain gray level image, the Character segmentation unit is handled with the gray processing
Unit and the static memory are separately connected, by gray value in the gray level image determined character upper limit gray threshold and
Determined the pixel between character lower limit gray threshold and identified and form multiple character subgraphs, the character recognition unit with it is described
Character segmentation unit connects, each corresponding character of character subgraph is identified based on scheduled OCR recognizers, and according to
Multiple characters that each position of character subgraph in the gray level image will identify that are combined, described in acquisition
Identification string；
The embeded processor and each unit of described image detector, the static memory, the high-definition camera
It is separately connected with the infrared communication interface, controls the high-definition camera first and shoot the contour images, control the electricity
Table type identification unit has determined ammeter type described in identifying, then, has determined ammeter based on described in the static memory
Ammeter information table described in type search, to have determined the corresponding infrared communication address of ammeter type, test character string, word described in acquisition
Symbol upper limit gray threshold and character lower limit gray threshold and infrared communication address, location survey has tried character string, respectively as having determined
Determine character upper limit gray threshold and determined character lower limit gray threshold to be saved in static memory, controls the infrared communication and connect
Mouth tries the test signal of character string to being sent with the detected ammeter for having determined infrared communication address including the location survey, so as to
The location survey that its display screen shows that the test signal includes, which is controlled, in the detected ammeter tries character string, the embedded place
Reason device controls high-definition camera shooting test image after preset time, and starts the contrast enhancement unit, described
Wavelet filtering unit, the gray processing processing unit, the Character segmentation unit and the character recognition unit are described to obtain
Identification string, and the identification string is matched with the examination of the location survey character string preserved in the static memory,
Zero defect standby signal is then sent out with success, it fails to match then sends out defect alarm signal；
USB communication interface, for turning the benchmark image template of the ammeter of the various species in external USB flash disk and ammeter information table
The static memory is dealt into be preserved；
The preset time is 2 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610287028.7A CN105891765B (en) | 2015-03-08 | 2015-03-08 | Ammeter defect Intelligent testing equipment |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510100771.2A CN104614701B (en) | 2015-03-08 | 2015-03-08 | Ammeter defect Intelligent testing equipment |
| CN201610287028.7A CN105891765B (en) | 2015-03-08 | 2015-03-08 | Ammeter defect Intelligent testing equipment |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510100771.2A Division CN104614701B (en) | 2015-03-08 | 2015-03-08 | Ammeter defect Intelligent testing equipment |
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| Publication Number | Publication Date |
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| CN105891765A CN105891765A (en) | 2016-08-24 |
| CN105891765B true CN105891765B (en) | 2018-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610287028.7A Active CN105891765B (en) | 2015-03-08 | 2015-03-08 | Ammeter defect Intelligent testing equipment |
| CN201610287015.XA Expired - Fee Related CN105911508B (en) | 2015-03-08 | 2015-03-08 | Ammeter defect Intelligent testing equipment |
| CN201510100771.2A Expired - Fee Related CN104614701B (en) | 2015-03-08 | 2015-03-08 | Ammeter defect Intelligent testing equipment |
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| CN104698426B (en) * | 2015-04-01 | 2017-08-25 | 浙江晨泰科技股份有限公司 | Outdoor electrical energy meter fault examines terminal automatically |
| CN104899879B (en) * | 2015-05-21 | 2017-11-03 | 国家电网公司 | A kind of method of the online outward appearance detection of electric energy meter |
| CN106970318A (en) * | 2017-04-25 | 2017-07-21 | 金卡智能集团股份有限公司 | Measuring instrument circuit board intelligent test system and intelligent test method |
| CN107422294A (en) * | 2017-05-08 | 2017-12-01 | 国网山东省电力公司莱芜供电公司 | A kind of ammeter defect Intelligent testing equipment |
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| CN107730478A (en) * | 2017-10-17 | 2018-02-23 | 云南电网有限责任公司电力科学研究院 | A kind of method for detecting shape and device of electric energy metering automation terminal |
| CN108573489B (en) * | 2018-04-22 | 2019-05-07 | 杭州知桔科技有限公司 | It hurdles integrity degree detection platform |
| CN109472773B (en) * | 2018-09-29 | 2020-05-05 | 广东工业大学 | Defect detection method for LED |
| CN110907885B (en) * | 2019-12-06 | 2021-10-01 | 国网湖北省电力有限公司计量中心 | Method and system for evaluating field operation state of digital electric energy metering system |
| CN111426864A (en) * | 2020-04-18 | 2020-07-17 | 无锡意美浩科技有限公司 | Universal meter with high-voltage warning function |
| CN112148555A (en) * | 2020-09-14 | 2020-12-29 | 贵州电网有限责任公司 | Intelligent reading and identifying method and system for fault warning information |
| CN113589217A (en) * | 2021-07-31 | 2021-11-02 | 万安裕高电子科技有限公司 | Intelligent ammeter defect detection device |
| CN117095389B (en) * | 2023-10-19 | 2024-02-06 | 南京电力自动化设备三厂有限公司 | Image data processing method and system based on liquid crystal visual recognition unit |
| CN117173720B (en) * | 2023-11-02 | 2024-02-09 | 江苏云上电力科技有限公司 | Processing method and device suitable for intelligent energy unit |
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Also Published As
| Publication number | Publication date |
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| CN104614701A (en) | 2015-05-13 |
| CN105891765A (en) | 2016-08-24 |
| CN105911508A (en) | 2016-08-31 |
| CN104614701B (en) | 2016-09-14 |
| CN105911508B (en) | 2018-06-26 |
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