CN205240617U - Belt is vertically torn and is detected and alarm device based on image discontinuity point is surveyed - Google Patents
Belt is vertically torn and is detected and alarm device based on image discontinuity point is surveyed Download PDFInfo
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- CN205240617U CN205240617U CN201520840506.3U CN201520840506U CN205240617U CN 205240617 U CN205240617 U CN 205240617U CN 201520840506 U CN201520840506 U CN 201520840506U CN 205240617 U CN205240617 U CN 205240617U
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- 230000003287 optical effect Effects 0.000 claims abstract description 4
- 238000003384 imaging method Methods 0.000 claims 2
- 238000001514 detection method Methods 0.000 abstract description 9
- 239000004973 liquid crystal related substance Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 description 5
- 239000003245 coal Substances 0.000 description 2
- 102100029469 WD repeat and HMG-box DNA-binding protein 1 Human genes 0.000 description 1
- 101710097421 WD repeat and HMG-box DNA-binding protein 1 Proteins 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Abstract
The utility model discloses a belt is vertically torn and is detected and alarm device based on image discontinuity point is surveyed, the device comprises image data treater, CCD digital camera, liquid crystal display and alarm, and CCD digital camera installs in the belt below, and whether the non - loading end of the perpendicular belt of optical axis, image data treater are handled the detection belt to the belt image and are taken place vertically to tear, trigger alarm sounds and the light warning of twinkleing if vertically tearing appears in the belt to the image is torn to the demonstration belt on liquid crystal display, and the device's detection method is non -contact, and wearing and tearing can not suffered to the check out test set, detects sensitive height, and with low costs, the equipment subassembly is few, easily installs and maintains.
Description
Technical field
The present invention relates to a kind of ribbon conveyer belt longitudinal tear and detect and warning device, relate in particular to a kind of based on not point of imageThe contactless belt longitudinal tear of surveying detects and warning device.
Background technology
In coal production, ribbon conveyer is one of topmost means of transport, and ribbon conveyer is skin in conveying coal processBand longitudinal tear accident happens occasionally, if found not in time, can cause whole piece belt tearing to damage, and causes huge economy to damageLose. The method that detects at present belt longitudinal tear has: impulse detection method (detecting impulsive force in belt medium propagates), carrying roller are abnormalStressed detection (analyzing the stressed unusual condition of carrying roller), supercritical ultrasonics technology (detecting ultrasonic propagation in belt medium), piezo-resistance method(detect belt below and leak material situation), embedding inlay technique (embedding conductive rubber, optical fiber etc. in belt) etc., also have in addition based onThe image detection of line laser, above-mentioned detection method or have certain defect in principle, or need the longer ability of belt tearingDetect, or cost is higher, or installation component is many, it is complicated to install, or later maintenance is loaded down with trivial details etc.
Need a kind of belt longitudinal tear detection method that solves or at least improve one or more problems intrinsic in prior art.
Summary of the invention
Therefore the object of the present invention is to provide a kind of belt longitudinal tear of surveying based on image discontinuity point to detect and the dress of reporting to the policePut, the detection method of this device is contactless, and checkout equipment can not be worn and torn, and detects sensitive height, and cost is low, equipmentAssembly is few, easily I&M.
According to a kind of embodiment form, provide a kind of belt longitudinal tear of surveying based on image discontinuity point to detect and warning device,Technical scheme provided by the invention is as follows: apparatus of the present invention (are comprised shutter, dodge by image data processor, CCD digital cameraLight modulation and lens), LCDs, alarm composition; Described image data processor is the core of whole device, for rightProcess to identify belt from the image of CCD digital camera and whether occur longitudinal tear, for controlling CCD digital cameraShutter opening with close, flash lamp open and close and lens position adjustment, also show for controlling LCDs the skin of tearingBand image; Also for controlling, alarm is sounded and the light that glimmers, and also, for outputing signal to belt control appliance, works as beltOut of service by belt control appliance control belt while there is longitudinal tear; Described CCD digital camera is arranged on belt below,Its optical axis vertical strap non-bearing face, the image size of picked-up is 640 (width) × 480 (highly) pixels, widthCorresponding belt width direction, the corresponding belt axial direction of short transverse; Described flash lamp is carried in the time taking for CCD digital cameraFor light source; Described alarm is sounded in the time of belt generation longitudinal tear and the light that glimmers is reported to the police; Described LCDs showsThe belt image of tearing.
Apparatus of the present invention operation principle is: same when image data processor control CCD digital camera is opened shutter picked-up belt imageTime open flash lamp to there is enough light to absorb strap surface image clearly, the image obtaining is examined by predefined logicSurvey belt whether longitudinal tear occurs, if longitudinal tear appears in belt, trigger alarm device is sounded and the light that glimmers is reported to the police,LCDs shows tears belt image, sends signal out of service to belt control appliance control belt simultaneously. Detect beltThe method of longitudinal tear is:
A. by image along continuous straight runs by equidistant vertical direction cutting;
B. find the discontinuity point on each tangent line, described discontinuity point is that shade of gray value is greater than given threshold value and symbol phaseInstead, adjacent but distance is less than in two points of given threshold value;
C. calculate the average coordinates of discontinuity point, calculate the horizontal coordinate variance of discontinuity point, statistics and average level coordinate differenceBe less than the discontinuous K of counting of 2 times of variances;
D. work asWhile being greater than η, judge belt generation longitudinal tear, all the other are normal. P is all discontinuous counting, and η is givenParameter.
Brief description of the drawings
By following explanation, accompanying drawing embodiment becomes apparent, and it is at least one the preferred but non-limit to describe by reference to the accompanying drawings onlyThe way of example of property embodiment processed provides.
Fig. 1 is apparatus of the present invention structural representation.
Fig. 2 is the detection principle schematic of the inventive method.
Detailed description of the invention
Referring to Fig. 1, apparatus of the present invention by image data processor, CCD digital camera (comprising shutter, flash lamp and lens) andAlarm composition; Image data processor NvidiaTegraK1 processor, the Kepler figure that it comprises 192 cores addsSpeed device GPU, 2.2GHzARMCortexA15CPU and 2GBRAM memory, thereby compact conformation is simple, device is few,CCD digital camera adopts the digital camera taking FT-18 chip as imageing sensor, and the image of seizure is by view data processingMIPI port is input to image data processor, and image data processor passes through I2The shutter of the total line traffic control CCD digital camera of C is openedOpen and close, flash lamp opens and closes and lens position; By spi bus control alarm sound and glimmer light andThe status information that skin is torn sends to belt control appliance; It is 8 inches that LCDs adopts size, and resolution ratio is1920 × 1200. CCD digital camera is arranged on to belt below, its optical axis vertical strap non-bearing face, when work by picture numberAccording to processor control CCD digital camera picked-up belt image, image size is 640 (width) × 480 (highly) pixels,The corresponding belt width direction of width, the corresponding belt axial direction of short transverse. The image obtaining is located as followsReason:
A. by image level cutting, consecutive tangent spacing is e, and unit is pixel (following distance and long measure are pixel),As shown in Figure 1.
B. each tangent line is handled as follows:
1) sample with spacing r, as shown in Figure 1, calculate the shade of gray value of each sample point, if there be N sampled point,The gradient at i place, position: g (i)=p (i+1)-p (i) ∨ i ∈ { 1,2, N-1}, the gray value that p (i) is i place, position; SelectShade of gray value is greater than glBe less than-glSampled point, it is labeled as respectively to 1 and-1, be called gauge point, the sampling of other valuePoint is labeled as 0, and wherein 9lFor given parameter; glRule of thumb given.
2) neighbor distance is less than lregul, gauge point that label symbol is identical is a sequence, and the value of sequence of points is cumulative, is assigned to sequenceSuper initial point, retains former label symbol, the mark of other in sequence 0. Wherein lregulFor given parameter, lregulRule of thumbGiven.
3) will be apart from being less than lregulThe value of two gauge points that label symbol is contrary is added, if be more than or equal to 0, its value is assigned to markBe 1 gauge point, corresponding point is gauge point, if be less than 0, its value is assigned to and is labeled as-1 gauge point, and corresponding point is markNote point;
4) retention is greater than ghOr be less than-ghGauge point, wherein, ghFor given parameter, | gh|＞|gl|；
5) find two contrary adjacent marker points of label symbol that distance is less than σ, the point that note label symbol is 1 is discontinuity point,Also can remember that label symbol is that-1 point is discontinuity point, wherein σ is given parameter;
C. calculate the average coordinates of discontinuity point, calculate the horizontal coordinate variance of discontinuity point, statistics and average level coordinate differenceBe less than the discontinuous K of counting of 2 times of variances;
D. work asWhile being greater than η, judge belt generation longitudinal tear, all the other are normal. P is all discontinuous counting, and η is givenParameter.
When belt occur longitudinal tear trigger alarm device sound and the light that glimmers is reported to the police, LCDs shows tears beltImage sends signal out of service to belt control appliance control belt simultaneously.
Claims (1)
1. the belt longitudinal tear of surveying based on image discontinuity point detects and a warning device, it is characterized in that: be made up of image data processor, CCD digital camera, LCDs, alarm; Described CCD digital camera comprises shutter, flash lamp and lens; Described image data processor is the core of whole device, for whether there is longitudinal tear to processing to identify belt from the image of CCD digital camera, for controlling the shutter opening of CCD digital camera and closing, flash lamp opens and closes and lens position adjustment, also shows for controlling LCDs the belt image of tearing; Also for controlling, alarm is sounded and the light that glimmers, also for outputing signal to belt control appliance, out of service by belt control appliance control belt in the time of belt generation longitudinal tear; Described CCD digital camera is arranged on belt below, its optical axis vertical strap non-bearing face, the image size of picked-up is 640 pixel × 480 pixels, 640 represent picture traverse size, 480 represent picture altitude size, the corresponding belt width direction imaging size of width size, the corresponding belt axial direction of height size imaging size; Described flash lamp provides light source in the time taking for CCD digital camera; Described alarm is sounded in the time of belt generation longitudinal tear and the light that glimmers is reported to the police; Described LCDs shows the belt image of tearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520840506.3U CN205240617U (en) | 2015-10-28 | 2015-10-28 | Belt is vertically torn and is detected and alarm device based on image discontinuity point is surveyed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520840506.3U CN205240617U (en) | 2015-10-28 | 2015-10-28 | Belt is vertically torn and is detected and alarm device based on image discontinuity point is surveyed |
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| Publication Number | Publication Date |
|---|---|
| CN205240617U true CN205240617U (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520840506.3U Expired - Fee Related CN205240617U (en) | 2015-10-28 | 2015-10-28 | Belt is vertically torn and is detected and alarm device based on image discontinuity point is surveyed |
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| CN (1) | CN205240617U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114890090A (en) * | 2022-06-08 | 2022-08-12 | 扎鲁特旗扎哈淖尔煤业有限公司 | Belt longitudinal tearing detection method and device |
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2015
- 2015-10-28 CN CN201520840506.3U patent/CN205240617U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114890090A (en) * | 2022-06-08 | 2022-08-12 | 扎鲁特旗扎哈淖尔煤业有限公司 | Belt longitudinal tearing detection method and device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160518 Termination date: 20201028 |