CN108594104A - A kind of brushless exciter method for detecting fault of rotating diode and system - Google Patents
A kind of brushless exciter method for detecting fault of rotating diode and system Download PDFInfo
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- CN108594104A CN108594104A CN201810344865.8A CN201810344865A CN108594104A CN 108594104 A CN108594104 A CN 108594104A CN 201810344865 A CN201810344865 A CN 201810344865A CN 108594104 A CN108594104 A CN 108594104A
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- reference pattern
- state picture
- status indicator
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/26—Testing of individual semiconductor devices
- G01R31/2601—Apparatus or methods therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/26—Testing of individual semiconductor devices
- G01R31/265—Contactless testing
- G01R31/2656—Contactless testing using non-ionising electromagnetic radiation, e.g. optical radiation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/26—Testing of individual semiconductor devices
- G01R31/27—Testing of devices without physical removal from the circuit of which they form part, e.g. compensating for effects surrounding elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/74—Testing of fuses
Abstract
The invention discloses a kind of brushless exciter method for detecting fault of rotating diode and systems.The method includes：From default camera site, acquisition includes that the fuse blows image at fault status indicator pop-up end identifies reference pattern and state picture from the fuse blows image of acquisition；The center of the center and state picture of reference pattern is calculated separately out using preset algorithm；Whether exceed pre-set threshold value by comparing the center of state picture and the distance between the center of reference pattern, to judge whether fuse fuses.Brushless exciter method for detecting fault of rotating diode provided by the invention based on image recognition, research and application is carried out to the fuse image of fuse material object shooting, it can effectively judge whether rotating diode breaks down, judging result is accurate and reliable, also solve the problems, such as stroboscope observation method can not on-line checking, for ensure brushless exciting generating set safe and stable operation it is significant.
Description
Technical field
The present invention relates to power plant excitation system technical field, more particularly to a kind of brushless exciter rotating diode failure
Detection method and system.
Background technology
Brushless exciter is to be encouraged the AC rectification that exciter exports for direct current supply generator rotor by diode
Magnetic.As shown in Figure 1, typical three-phase brushless exciter stator winding is powered by static excitation device, armature winding follows shaft
Rotation generates alternating current together, and alternating current is converted to direct current by diode rectifier in shaft, by conductive in rotor
Bar supply generator rotor.Brushless exciter rectifier is made of multiple diodes and protection fuse, and one is only allowed in operation
Fixed number amount fuse blows are opened a way.Excessive number leg open can make other branch currents excessive and then greater number is caused to fuse
Device fuses, and generator loses exciting current, significant impact is caused to unit and power grid.Since rotating diode follows shaft high speed
Rotation (half speed generator is 1500rpm), how to monitor its state in operation is a problem.
There are mainly two types of prior arts, first, utilizing the non-conduction detecting system of rotating diode.It is encouraged by being mounted on
Hall element inside magnetomechanical is detected rotating diode branch current, by being detected, amplifying, together to current signal
Step judges diode state again after comparing.But due in exciter operating temperature it is high, it is more demanding to Hall element, exist
Put into operation wave distortion after a long time, there are problems that false alarm.And exciter and generator occur generator when electric fault and turn
Fault current on son flows through armature of exciter winding, to also lead to Hall element false alarm.
Second of stroboscope observation method, personnel directly visually examine the fuse of rotating diode using stroboscope
It looks into.Stroboscope can send out the high frequency flashing light close with rotating diode rotating speed, since the vision of human eye stops effect, make to be observed
Fuse seem static or slow movement, pass through observe Fuse indicators state realize rotating diode state-detection.
But the method for using stroboscope observation cannot achieve on-line checking, and personnel is needed periodically to visually inspect, it is very big using having
Limitation.
Invention content
In order to solve problems in the prior art, an embodiment of the present invention provides a kind of brushless exciter rotating diode failures
Detection method and system.The technical solution is as follows：
On the one hand, an embodiment of the present invention provides a kind of brushless exciter method for detecting fault of rotating diode, the sides
Method includes：
From default camera site, acquisition includes the fuse blows image at fault status indicator pop-up end, described molten
Disconnected device is connected with the rotating diode of brushless exciter, and the fault status indicator is inserted into the installation of fuse one end end face
Kong Zhong, and by popping up whether end pops up mounting hole come the blown state of indicating fuse；
From the fuse blows image of acquisition, identify reference pattern and state picture, the reference pattern with it is described
One end end face of fuse overlaps and its central axes is overlapped with the central axes of the mounting hole, the state picture and the failure
The pop-up end end face of positioning indicator overlaps and its central axes is overlapped with the central axes of the fault status indicator；
The center of the center and state picture of reference pattern is calculated separately out using preset algorithm；
Whether exceed pre-set threshold value by comparing the center of state picture and the distance between the center of reference pattern, to sentence
Whether disconnected fuse fuses.
In the above-mentioned brushless exciter method for detecting fault of rotating diode of the embodiment of the present invention, the reference pattern packet
It includes：The first round, state picture packet that at least one coaxial with the mounting hole and with fuse one end end face overlaps
It includes：The second circle that at least one coaxial with the fault status indicator and pop-up end end face with fault status indicator overlaps
Shape；
The center of the center and state picture that reference pattern is calculated separately out using preset algorithm, packet
It includes：
Circle algorithm is detected using preset Hough transformation, determines first round and the second circular center location.
It is described by comparing shape in the above-mentioned brushless exciter method for detecting fault of rotating diode of the embodiment of the present invention
Whether the distance between the center of state figure and the center of reference pattern exceed pre-set threshold value, to judge whether fuse fuses,
Including：
Whether exceed pre-set threshold value by comparing the distance between the first circular center of circle and the second circular center of circle, to sentence
Whether disconnected fuse fuses.
In the above-mentioned brushless exciter method for detecting fault of rotating diode of the embodiment of the present invention, the default shooting position
Set including：Shooting distance is 80~120cm, and shooting angle is 15 degree~25 degree.
In the above-mentioned brushless exciter method for detecting fault of rotating diode of the embodiment of the present invention, the method is also wrapped
It includes：
In fuse interface image from acquisition, when None- identified goes out reference pattern or state picture, issue the user with
Frame losing is reminded, and the frame losing is reminded is not used to the inspection of rotating diode failure for reminding user to get fuse interface image
It surveys.
On the other hand, an embodiment of the present invention provides a kind of brushless exciter rotating diode fault detection systems, including：
Acquisition module, for from default camera site, acquisition to include that the fuse at fault status indicator pop-up end is molten
Disconnected image, the fuse are connected with the rotating diode of brushless exciter, and the fault status indicator is inserted into fuse
In the mounting hole of one end end face, and by popping up whether end pops up mounting hole come the blown state of indicating fuse；
Identification module, for from the fuse blows image of acquisition, identifying reference pattern and state picture, the ginseng
Examine that figure is overlapped with one end end face of the fuse and its central axes is overlapped with the central axes of the mounting hole, the state diagram
Shape is overlapped with the pop-up end end face of the fault status indicator and the central axes of its central axes and the fault status indicator
It overlaps；
Computing module, in the center and state picture for calculating separately out reference pattern using preset algorithm
Heart position；
Judgment module, for whether exceeding by comparing the center of state picture and the distance between the center of reference pattern
Pre-set threshold value, to judge whether fuse fuses.
In the above-mentioned brushless exciter rotating diode fault detection system of the embodiment of the present invention, the reference pattern packet
It includes：The first round, state picture packet that at least one coaxial with the mounting hole and with fuse one end end face overlaps
It includes：The second circle that at least one coaxial with the fault status indicator and pop-up end end face with fault status indicator overlaps
Shape；
The computing module is additionally operable to detect circle algorithm using preset Hough transformation, determines the first circle and second
Circular center location.
In the above-mentioned brushless exciter rotating diode fault detection system of the embodiment of the present invention, the judgment module,
It is additionally operable to whether exceed pre-set threshold value by comparing the distance between the first circular center of circle and the second circular center of circle, to judge
Whether fuse fuses.
In the above-mentioned brushless exciter rotating diode fault detection system of the embodiment of the present invention, the default shooting position
Set including：Shooting distance is 80~120cm, and shooting angle is 15 degree~25 degree.
In the above-mentioned brushless exciter rotating diode fault detection system of the embodiment of the present invention, further include：
Reminding module, for from the fuse interface image of acquisition, None- identified to go out reference pattern or state picture
When, frame losing prompting is issued the user with, the frame losing prompting is not used to revolve for reminding user to get fuse interface image
Turn diode breakdown detection.
The advantageous effect that technical solution provided in an embodiment of the present invention is brought is：
By the way that from default camera site, acquisition includes the fuse blows image at fault status indicator pop-up end, so
Afterwards from the fuse blows image of acquisition, reference pattern and state picture are identified, and calculate separately using preset algorithm
Go out the center of reference pattern and the center of state picture, finally, the center by comparing state picture and reference chart
Whether the distance between center of shape exceeds pre-set threshold value, to judge whether fuse fuses, and then may determine that two poles of rotation
Whether pipe breaks down.The brushless exciter method for detecting fault of rotating diode based on image recognition is utilized in this way, to molten
The fuse image of disconnected device material object shooting carries out research and application, can effectively judge whether rotating diode breaks down, sentence
Disconnected result is accurate and reliable, also solve the problems, such as stroboscope observation method can not on-line checking, for ensureing brushless excitation
The safe and stable operation of generating set is significant.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of brushless exciter structural schematic diagram that the prior art provides；
Fig. 2 is a kind of brushless exciter method for detecting fault of rotating diode flow chart that the embodiment of the present invention one provides；
Fig. 3 is a kind of structural schematic diagram for fuse that the embodiment of the present invention one provides；
Fig. 4 is structural schematic diagram when a kind of fault status indicator that the embodiment of the present invention one provides does not pop up；
Fig. 5 is structural schematic diagram when a kind of fault status indicator that the embodiment of the present invention one provides pops up；
Fig. 6 is that a kind of structure of brushless exciter rotating diode fault detection system provided by Embodiment 2 of the present invention is shown
It is intended to.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment one
An embodiment of the present invention provides a kind of brushless exciter method for detecting fault of rotating diode, referring to Fig. 2, this method
May include：
Step S11, from default camera site, acquisition includes the fuse blows figure at fault status indicator pop-up end
Picture, fuse are connected with the rotating diode of brushless exciter, and fault status indicator is inserted into the peace of fuse one end end face
It fills in hole, and by popping up whether end pops up mounting hole come the blown state of indicating fuse.
In the present embodiment, fuse refers to so that melt is fused with the heat that itself is generated when electric current is more than specified value,
A kind of electric appliance of disconnecting circuit.In brushless exciter, fuse and rotating diode are composed in series rectifier, also with rotation two
Pole pipe is the same with shaft high speed rotation.Referring to Fig. 3, mounting hole, malfunction instruction are offered on one end end face of fuse
Device (being used to indicate fuse blows state) is inserted into the mounting hole, and is popped up end by it and (can be hit by a bullet from mounting hole
The one end gone out) whether pop up mounting hole and carrys out the blown state of indicating fuse, and then may determine that whether rotating diode occurs
Failure.From Fig. 3, it is recognised that (i.e. fuse is not molten when mounting hole is not popped up in the pop-up end of fault status indicator
It is disconnected), one end end face (end face for being provided with mounting hole) for popping up end end face and fuse is closer to, when malfunction refers to
When showing the pop-up end pop-up of device, the variation for having relatively large distance between end end face and one end end face of fuse, Ke Yiju are popped up
Whether this pop-up end for carrying out failure judgement positioning indicator pops up, and then judges whether fuse fuses (fault status indicator
Pop-up then indicates fuse blows).It should be noted that in practical applications, the method periodically shot may be used, to rotation
Diode is monitored in real time, and the fuse blows image taken is stored, and is conducive to historical query.
Step S12 identifies reference pattern and state picture from the fuse blows image of acquisition, reference pattern with
One end end face of fuse overlaps and its central axes is overlapped with the central axes of mounting hole, state picture and fault status indicator
Pop-up end end face overlaps and its central axes is overlapped with the central axes of fault status indicator.
In the present embodiment, whether mounting hole is popped up for the pop-up end of failure judgement positioning indicator, it is molten from fuse
In disconnected image, reference pattern and state picture are selected, wherein reference pattern is overlapped with one end end face of fuse, and is and peace
The coaxial image in hole is filled, (is kept for opposite fuse one end end face because mounting hole remains unchanged in the end face of fuse one end
It is constant), the basis of judgement can be used as accordingly in this way；State picture is overlapped with the pop-up end end face of fault status indicator,
And be on-axis image with fault status indicator, such state picture can change with the pop-up end of fault status indicator and
Variation, can the be out of order pop-up end of positioning indicator of limited response whether pop up.
It should be noted that the cross section of mounting hole can be round, can also be other shapes, such as rectangular etc., this
In be not limited, the shape of fault status indicator is mating with mounting hole, is not also limited here.
Optionally, referring to Fig. 4 and Fig. 5, reference pattern includes：One end at least one coaxial with mounting hole and with fuse
The first circular image that end face overlaps, state picture include：At least one coaxial with the fault status indicator and and failure
The second circular image that the pop-up end end face of positioning indicator overlaps.
It in the present embodiment, generally can be in order to more accurately find out the center of reference pattern and state picture
Multiple the first concentric circles are looked for, and confirm their together circle center by multiple the first concentric circles, as with reference to figure
The center of picture is to use mounting hole in the circular cross-section (i.e. label 2) of fuse one end endface and marking in Fig. 4 and Fig. 5
In fuse one end end face and first ring (i.e. label 1) concentric with the circular cross-section；Similarly, it also looks for multiple concentric
Second is round, and confirms their together circle center by multiple the second concentric circles, as the center of status image, in Fig. 4
It is that end end is being popped up in the circular boundary (i.e. label 3) of the end face at the pop-up end for using fault status indicator and marking with Fig. 5
Face and second ring (i.e. label 4) concentric with circular boundary.Certainly, in practical applications, it can be not limited to above-mentioned selection,
The quantity of reference pattern and state picture, shape are unrestricted, and the example in Fig. 4 and Fig. 5 is only preferable examples.
Step S13 calculates separately out the centre bit of the center and state picture of reference pattern using preset algorithm
It sets.
In the present embodiment, above-mentioned steps S13 can be realized in the following way：
Circle algorithm is detected using preset Hough transformation, determines first round and the second circular center location.
Specifically, with reference to figure 4 and Fig. 5, the directional information using vertical line on the boundary point of Hough transform technique and circle is fast
The fast detection accurately realized to concentric circles.The extraction of marginal point is carried out to image first, then by each marginal point neighbour
Line segment curvature estimation in domain estimates the rough radius length of the marginal point.Length based on marginal point radius and direction letter
Breath, can be determined by the line segment in the center of circle and the marginal point.Circle quantization is divided into N parts of (N=64, i=0,1,2 ...
15), each section of arc is all indicated with one 64 binary strings.If the marginal point (x '1,y′1) it is located at i-th section of arc side of circle
In boundary, then can be calculated by following formula by the candidate center of circle on the line segment：
Wherein, i and j is the radius discrete direction and length of marginal point respectively.
Accumulation operations are carried out finally for the candidate center of circle of acquisition, to obtain accurate concentric circles position.
Step S14, it is default by comparing whether the center of state picture and the distance between the center of reference pattern exceed
Threshold values to judge whether fuse fuses, and then may determine that whether rotating diode breaks down.
In the present embodiment, above-mentioned steps S14 can be realized in the following way：
Whether exceed pre-set threshold value by comparing the distance between the first circular center of circle and the second circular center of circle, to sentence
Whether disconnected fuse fuses.
In the present embodiment, the distance between the center at the center of state picture and reference pattern, instruction of nonserviceabling
There are larger variation when the pop-up end pop-up of device, it is possible thereby to the size between more above-mentioned distance and pre-set threshold value, to sentence
Whether disconnected fault status indicator pops up, and then judges whether fuse fuses.Fig. 4 is when fault status indicator does not pop up
Example, it can be seen that at this time between the center of state picture and the center of reference pattern also relatively；Fig. 5 refers to for malfunction
Show example when device pop-up, it can be seen that separate distant between the center of state picture and the center of reference pattern at this time
.
It should be noted that above-mentioned threshold values with obtain fuse blows image when camera site have it is close contact,
Preferably, default camera site may include：Shooting distance (i.e. the distance between video camera and fuse one end end face) is 80
~120cm, shooting angle (angle i.e. between video camera shooting direction and fuse rotary shaft) are 15 degree~25 degree.
Optionally, due to that not can get effective fuse interface image every time, referring to Fig. 2, this method may be used also
To include：
Step S15, in the fuse interface image from acquisition, when None- identified goes out reference pattern or state picture, to
User sends out frame losing prompting, which reminds is not used to rotating diode for reminding user to get fuse interface image
Fault detect.
In practical applications, high-speed industrial video camera may be used, it is high-speed rotating under 1500rpm rotating speeds to shoot
Fuse image, time for exposure are selected as 1us, and it is only fault status indicator object pixel to make the pixel of its motion blur
1/40, provide good image-context for fault status indicator target identification.It is equipped with high brightness explosion-proof lamp simultaneously, for high speed
It is exposed compensation, and the design of the anti-electromagnetic interference circuit with profession and explosive-proof grade when shooting, is made with meeting industry spot
Use demand.
The embodiment of the present invention is by the way that from default camera site, acquisition includes the fuse at fault status indicator pop-up end
Fuse image, then from the fuse blows image of acquisition, identifies reference pattern and state picture, and utilize preset calculation
Method calculates separately out the center of reference pattern and the center of state picture, finally, by comparing in state picture
Whether the distance between center of the heart and reference pattern exceeds pre-set threshold value, to judge whether fuse fuses, and then can sentence
Whether disconnected rotating diode breaks down.The brushless exciter rotating diode fault detect based on image recognition is utilized in this way
Method carries out research and application to the fuse image of fuse material object shooting, can effectively judge whether rotating diode goes out
Existing failure, judging result is accurate and reliable, also solve the problems, such as stroboscope observation method can not on-line checking, for ensureing
The safe and stable operation of brushless exciting generating set is significant.
Embodiment two
An embodiment of the present invention provides a kind of brushless exciter rotating diode fault detection systems, implement embodiment one
The method, referring to Fig. 6, which may include：Acquisition module 100, computing module 300, judges mould at identification module 200
Block 400.
Acquisition module 100, for from default camera site, acquisition to include the fuse at fault status indicator pop-up end
Fuse image, and fuse is connected with the rotating diode of brushless exciter, and fault status indicator is inserted into fuse one end end
In the mounting hole in face, and by popping up whether end pops up mounting hole come the blown state of indicating fuse.
In the present embodiment, fuse refers to so that melt is fused with the heat that itself is generated when electric current is more than specified value,
A kind of electric appliance of disconnecting circuit.In brushless exciter, fuse and rotating diode are composed in series rectifier, also with rotation two
Pole pipe is the same with shaft high speed rotation.Mounting hole is offered on one end end face of fuse, fault status indicator is (for referring to
Show fuse blows state) it is inserted into the mounting hole, and end (one end that can be popped up from mounting hole) is popped up by it
Whether pop up mounting hole and carry out the blown state of indicating fuse, and then may determine that whether rotating diode breaks down.
In practical applications, high-speed industrial video camera may be used, it is high-speed rotating under 1500rpm rotating speeds to shoot
Fuse image, time for exposure are selected as 1us, and it is only fault status indicator object pixel to make the pixel of its motion blur
1/40, provide good image-context for fault status indicator target identification.It is equipped with high brightness explosion-proof lamp simultaneously, for high speed
It is exposed compensation, and the design of the anti-electromagnetic interference circuit with profession and explosive-proof grade when shooting, is made with meeting industry spot
Use demand.It should be noted that in practical applications, the method periodically shot may be used, rotating diode is carried out real-time
Monitoring, and the fuse blows image taken is stored, be conducive to historical query.
Identification module 200 is joined for from the fuse blows image of acquisition, identifying reference pattern and state picture
Examine that figure is overlapped with one end end face of fuse and its central axes is overlapped with the central axes of mounting hole, state picture and malfunction
The pop-up end end face of indicator overlaps and its central axes is overlapped with the central axes of fault status indicator.
In the present embodiment, whether mounting hole is popped up for the pop-up end of failure judgement positioning indicator, it is molten from fuse
In disconnected image, reference pattern and state picture are selected, wherein reference pattern is overlapped with one end end face of fuse, and is and peace
The coaxial image in hole is filled, (is kept for opposite fuse one end end face because mounting hole remains unchanged in the end face of fuse one end
It is constant), the basis of judgement can be used as accordingly in this way；State picture is overlapped with the pop-up end end face of fault status indicator,
And be on-axis image with fault status indicator, such state picture can change with the pop-up end of fault status indicator and
Variation, can the be out of order pop-up end of positioning indicator of limited response whether pop up.
It should be noted that the cross section of mounting hole can be round, can also be other shapes, such as rectangular etc., this
In be not limited, the shape of fault status indicator is mating with mounting hole, is not also limited here.
Computing module 300, center and state picture for calculating separately out reference pattern using preset algorithm
Center.
Judgment module 400, for center and reference pattern by comparing state picture the distance between center whether
Beyond pre-set threshold value, to judge whether fuse fuses, and then it may determine that whether rotating diode breaks down.
It should be noted that above-mentioned threshold values with obtain fuse blows image when camera site have it is close contact,
Preferably, default camera site may include：Shooting distance (i.e. the distance between video camera and fuse one end end face) is 80
~120cm, shooting angle (angle i.e. between video camera shooting direction and fuse rotary shaft) are 15 degree~25 degree.
Optionally, reference pattern includes：At least one coaxial with mounting hole and with fuse one end end face overlap
One circular image, state picture include：It is at least one coaxial and with fault status indicator with the fault status indicator
Pop up the second circular image that end end face overlaps.
It in the present embodiment, generally can be in order to more accurately find out the center of reference pattern and state picture
Multiple the first concentric circles are looked for, and confirm their together circle center by multiple the first concentric circles, as with reference to figure
Multiple the second concentric circles are similarly also looked for, and confirm the common of them by multiple the second concentric circles in the center of picture
The center of circle, the center as status image.
Further, computing module 300 are additionally operable to detect circle algorithm using preset Hough transformation, determine the first circle
Shape and the second circular center location.
Specifically computational methods have been described in embodiment one, and which is not described herein again.
Further, judgment module 400 are additionally operable to by comparing between the first circular center of circle and the second circular center of circle
Distance whether exceed pre-set threshold value, to judge whether fuse fuses.
In the present embodiment, the distance between the center at the center of state picture and reference pattern, instruction of nonserviceabling
There are larger variation when the pop-up end pop-up of device, it is possible thereby to the size between more above-mentioned distance and pre-set threshold value, to sentence
Whether disconnected fault status indicator pops up, and then judges whether fuse fuses.
Optionally, due to that not can get effective fuse interface image every time, referring to Fig. 6, which may be used also
To include：Reminding module 500.
Reminding module 500, for from the fuse interface image of acquisition, None- identified to go out reference pattern or state diagram
When shape, frame losing prompting is issued the user with, frame losing prompting is not used to revolve for reminding user to get fuse interface image
Turn diode breakdown detection.
The embodiment of the present invention is by the way that from default camera site, acquisition includes the fuse at fault status indicator pop-up end
Fuse image, then from the fuse blows image of acquisition, identifies reference pattern and state picture, and utilize preset calculation
Method calculates separately out the center of reference pattern and the center of state picture, finally, by comparing in state picture
Whether the distance between center of the heart and reference pattern exceeds pre-set threshold value, to judge whether fuse fuses, and then can sentence
Whether disconnected rotating diode breaks down.The brushless exciter rotating diode fault detect based on image recognition is utilized in this way
System carries out research and application to the fuse image of fuse material object shooting, can effectively judge whether rotating diode goes out
Existing failure, judging result is accurate and reliable, also solve the problems, such as stroboscope observation method can not on-line checking, for ensureing
The safe and stable operation of brushless exciting generating set is significant.
The embodiments of the present invention are for illustration only, can not represent the quality of embodiment.
One of ordinary skill in the art will appreciate that realizing that all or part of step of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of brushless exciter method for detecting fault of rotating diode, which is characterized in that the method includes：
From default camera site, acquisition includes the fuse blows image at fault status indicator pop-up end, the fuse
It connects with the rotating diode of brushless exciter, the fault status indicator is inserted into the mounting hole of fuse one end end face
In, and by popping up whether end pops up mounting hole come the blown state of indicating fuse；
From the fuse blows image of acquisition, reference pattern and state picture, the reference pattern and the fusing are identified
One end end face of device overlaps and its central axes is overlapped with the central axes of the mounting hole, the state picture and the malfunction
The pop-up end end face of indicator overlaps and its central axes is overlapped with the central axes of the fault status indicator；
The center of the center and state picture of reference pattern is calculated separately out using preset algorithm；
Whether exceed pre-set threshold value by comparing the center of state picture and the distance between the center of reference pattern, to judge to melt
Whether disconnected device fuses.
2. according to the method described in claim 1, it is characterized in that, the reference pattern includes：At least one and installation
Hole is coaxial and the first circle for being overlapped with one end end face of fuse, the state picture include：At least one and failure
Positioning indicator is coaxial and the second circle for being overlapped with the pop-up end end face of fault status indicator；
The center of the center and state picture that reference pattern is calculated separately out using preset algorithm, including：
Circle algorithm is detected using preset Hough transformation, determines first round and the second circular center location.
3. according to the method described in claim 2, it is characterized in that, the center and reference pattern by comparing state picture
The distance between center whether exceed pre-set threshold value, to judge whether fuse fuses, including：
Whether exceed pre-set threshold value by comparing the distance between the first circular center of circle and the second circular center of circle, to judge to melt
Whether disconnected device fuses.
4. according to the method described in claim 1, it is characterized in that, the default camera site includes：Shooting distance be 80~
120cm, shooting angle are 15 degree~25 degree.
5. according to the method described in claim 1, it is characterized in that, the method further includes：
In fuse interface image from acquisition, when None- identified goes out reference pattern or state picture, frame losing is issued the user with
It reminds, the frame losing is reminded is not used to rotating diode fault detect for reminding user to get fuse interface image.
6. a kind of brushless exciter rotating diode fault detection system, which is characterized in that including：
Acquisition module, for from default camera site, acquisition to include the fuse blows figure at fault status indicator pop-up end
Picture, the fuse are connected with the rotating diode of brushless exciter, and the fault status indicator is inserted into fuse one end
In the mounting hole of end face, and by popping up whether end pops up mounting hole come the blown state of indicating fuse；
Identification module, for from the fuse blows image of acquisition, identifying reference pattern and state picture, the reference chart
Shape is overlapped with one end end face of the fuse and its central axes is overlapped with the central axes of the mounting hole, the state picture with
The pop-up end end face of the fault status indicator overlaps and its central axes is overlapped with the central axes of the fault status indicator；
Computing module, the centre bit of center and state picture for calculating separately out reference pattern using preset algorithm
It sets；
Judgment module is preset for whether the distance between the center at center and reference pattern by comparing state picture to exceed
Threshold values, to judge whether fuse fuses.
7. system according to claim 6, which is characterized in that the reference pattern includes：At least one and installation
Hole is coaxial and the first circle for being overlapped with one end end face of fuse, the state picture include：At least one and failure
Positioning indicator is coaxial and the second circle for being overlapped with the pop-up end end face of fault status indicator；
The computing module is additionally operable to detect circle algorithm using preset Hough transformation, determines that first is round and second is round
Center location.
8. system according to claim 7, which is characterized in that the judgment module is additionally operable to round by comparing first
The center of circle and the distance between the second circular center of circle whether exceed pre-set threshold value, to judge whether fuse fuses.
9. system according to claim 6, which is characterized in that the default camera site includes：Shooting distance be 80~
120cm, shooting angle are 15 degree~25 degree.
10. system according to claim 6, which is characterized in that further include：
Reminding module, for working as from the fuse interface image of acquisition, when None- identified goes out reference pattern or state picture, to
User sends out frame losing prompting, and the frame losing is reminded is not used to two poles of rotation for reminding user to get fuse interface image
Pipe fault detect.
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