CN106596560A - Method for detecting injection molding starving defect of cross-flow fan on basis of laser sensor array as well as device - Google Patents
Method for detecting injection molding starving defect of cross-flow fan on basis of laser sensor array as well as device Download PDFInfo
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- CN106596560A CN106596560A CN201611150585.0A CN201611150585A CN106596560A CN 106596560 A CN106596560 A CN 106596560A CN 201611150585 A CN201611150585 A CN 201611150585A CN 106596560 A CN106596560 A CN 106596560A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
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Abstract
The invention provides a method for detecting an injection molding starving defect of a cross-flow fan on the basis of a laser sensor array as well as a device. The device comprises a laser emission array, a laser sensor receiving array, an analog signal processing circuit module, a single-chip microcomputer information processing module and a power module, wherein pulse laser signals are emitted by the laser emission array; the laser sensor receiving array receives the pulse laser signals transmitted through the cross-flow fan; the analog signal processing circuit module performs difference and voltage matching on the received pulse laser signals and inputs the processed signals to an A/D interface of a single-chip microcomputer; the single-chip microcomputer information processing module performs real-time feature extraction, feature fusion and decision discernment on the signals subjected to A/D digitization in real time; a message indicating whether the cross-flow fan product is qualified or not is output directly by a display module; setting of detection parameters, control of a detection process and detection data statistics are realized by a human-computer interaction module. The device realizes on-line automatic monitoring of the injection molding starving defect of the cross-flow fan.
Description
Technical field
The invention belongs to product quality on-line monitoring and diagnostic techniquess research field, and in particular to one kind is based on laser sensing
The through-flow fan blade injection of device array lacks material defect inspection method and device.
Background technology
Fan blade is the important ingredient of the blowing devices such as air-conditioning, is welded by through-flow fan blade moulding, fan blade matter
The fine or not impact equipment air-supply stability of amount and noiseproof feature.Injection blade occurs that in process of production bottom lacks the quality of material and asks
Topic.In current production process, many enterprises detect that the method is except increasing using manual detection method to lacking material defect
Plus the problem that also existence time work is easily caused workman's fatigue, judgement is reduced outside recruitment cost, reduction production efficiency, and lead
False Rate is caused to rise.
In order that fan blade air-supply is stable, reduce noise, through-flow fan blade is using blade non-equidistance, the complicated knot of the non-coaxial heart
Structure, to detection very big difficulty is brought.Although having the report of correlation detection technology, such as the inspection based on machine vision at present
Survey technology (Xu Wen, Ye Shidong. the design [J] of axial-flow fan blade defect automatic checkout system. electromechanical engineering technology, 2012,41.
05th phase, 34-38), but the method there is no input practical.Through-flow fan blade is realized based on the detection technique of infrared array sensor
Lack material failure on-line real-time measuremen ((1) Song Shoupeng, Zhao Tengfei etc. silent oscillation through-flow fan blade lack material fault on-line diagnostic device:
China, ZL201310588858. (2) Song Shoupeng, Zhao Tengfei etc. rotary-type injection blade lacks material fault on-line diagnostic device:In
State, ZL201310589515.5), but still suffer from detecting little scarce material defect (<1mm2) deficiency.
The present invention proposes a kind of through-flow fan blade injection based on laser sensor array and lacks material defect inspection method with dress
Put, the method is using generating laser and receives sensor, mounted in pairs in detection platform, through the laser of blade believe by reception
Number, data processing and defect dipoles are carried out by one-chip computer module, realize that injection lacks the monitoring of material defect, the inspection of particularly little defect
Survey.The characteristics of the method and device have defects detection rate high, is adapted to be promoted on automatic production line.
The content of the invention
The purpose of the present invention is to provide a kind of through-flow fan blade injection based on laser sensor array for the problems referred to above to lack
Material defect inspection method and device, the method is based on laser technology, can realize that the quality-monitoring to through-flow fan blade and defect are known
Not.
The technical scheme is that：A kind of through-flow fan blade injection based on laser sensor array lacks material defects detection side
Method, comprises the following steps：
S1, Laser emission array emitter pulsed laser signal；
S2, laser sensor receiving array receive the pulsed laser signal through through-flow fan blade；
S3, analog signal processing circuit module carry out difference to the pulse laser array signal for receiving, voltage matches, and
It is input to Chip Microcomputer A/D interface；
S4, Jing after A/D is by signal digitized, feature extraction is carried out to signal by single-chip machine information processing module in real time, it is special
Levy fusion and decision discernment；
S5, the whether qualified information of through-flow fan blade product is directly exported by display module；
S6, human-computer interaction module realize detection parameter setting, detection process control and detection data statistics.
In such scheme, Laser emission array emitter signal adopts two-way pulsed laser signal in step S1, wherein
All the way, used as reference signal, another road signal is used as detection signal, and two-way transmission signal parameters are consistent for signal.
In such scheme, the laser sensor receiving array in step S2 synchronously receives the two-way through through-flow fan blade
Pulsed laser signal, signal will be modulated by through-flow fan blade blade, and be carried with the presence or absence of the information for lacking material defect.
In such scheme, the carrying fan blade state that the analog signal processing circuit module in step S3 receives two-way
The pulsed laser signal of information carries out difference, obtains the differential signal of two paths of signals, and the theoretical output result of intact blade should be
0, then by voltage matches circuit realiration and the Signal Matching of A/D inputs.
In such scheme, the single-chip machine information processing module in step S4 is using C8051F020 single-chip microcomputers to collection
Data carry out real-time time-domain feature extraction, obtain with regard to defect time domain add up feature an={ an,0、an,1、……an,199And
Signal amplitude parameter bn={ bn,1、bn,2……bn,199(n=0,1)；
By anAnd bnIn numerical value contrasted with support vector machine training a, b for obtaining respectively, be designated as 1 more than a, b,
What is be less than is designated as 0, generates new array An={ An,0、An,1、……An,199And Bn={ Bn,1、Bn,2……Bn,199(n=0,
1)；
The cumulative feature of time domain and signal amplitude of defect are pressedCarry out Feature Fusion
Obtain C0、C1, contrast defect characteristic K0And K1If, C0More than K0Or C1More than K1, the through-flow fan blade exists to be molded to lack expects defect；If
C0Less than K0And C1Less than K1, the through-flow fan blade lacks material defect without injection, and recognition result is sent to into display module.
In such scheme, the human-computer interaction module of step S6 is realized passing through different model by adjustment detection parameter
Stream fan blade defects detection, it is possible to carry out reporting for statistical data.
A kind of through-flow fan blade injection realized described in claim 1 based on laser sensor array lacks material defect inspection method
Detection means, including Laser emission array, laser sensor receiving array, analog signal processing circuit module, single-chip microcomputer letter
Breath processing module and power module；
The Laser emission array is made up of generating laser, for launching two-way lock-out pulse laser signal, using ripple
The generating laser of long 650nm, running voltage 3.3V；
The laser sensor receiving array is by laser pick-off sensor group into for receiving the two of the modulation of Jing through-flow fan blades
Road pulsed laser signal；Receiving array adopts IS0203 receptors, 5V pulse signals is exported when laser irradiates, when dull thread irradiates
It is output as 0；
The analog signal processing circuit module is made up of difference channel, voltage matches circuit, for receive two-way
Carrying the pulsed laser signal of fan blade status information carries out difference, and the difference channel is Differential Input operational amplification circuit, is transported
Calculate amplifier and adopt OPA404 integrated transporting dischargings, the voltage matches circuit is by differentiated output signal voltage and A/D inputs
Required signal voltage is matched, and by two resistance of series connection ground connection clamping down on for voltage is realized；
The single-chip machine information processing module is electrically connected with analog signal processing circuit module, by C8051F020 single-chip microcomputers
Core board, MD050SD touch screens and LED composition；What the A/D modular converters collection two paths of signals that single-chip core core is included was generated
Two groups of data, whether the cumulative Feature Fusion of the amplitude Characteristics and time domain of signal meets through supporting vector according to fusion feature
It is defective that the defect characteristic that machine training draws judges whether through-flow fan blade contains, and single-chip microcomputer controls LED and touch according to judged result
Screen shows testing result, and human-computer interaction module is used to detect the adjustment and data statisticss of parameter；
The power module respectively with Laser emission array, laser sensor receiving array, analog signal processing circuit mould
Block, the electrical connection of single-chip machine information processing module, for the supply voltage for needed for providing；Power module can produce 5V, 3.3V,
2.5V d. c. voltage signals, use for circuit portions.
In such scheme, the Laser emission array and laser sensor receiving array respectively by two-way generating laser and
Two-way laser pickoff is constituted, and emitter launch wavelength is 650nm laser beams, and receptor model IS0203 receives wavelength
Scope is 400-1100nm；
Emission array and receiving array using one one receipts pattern, totally two groups, the laser beam position all the way in each of which group
In the plane of through-flow fan blade bottom, another road laser beam is located in the section of through-flow fan blade middle part, and two groups of transmitting light beams point to phase
Instead, a branch of to launch from inside to outside, the then ecto-entad transmitting of another beam is launched and is received sensor and ensured just to peace by frame for movement
Dress.
In such scheme, the analog signal processing circuit module is made up of difference channel, voltage matches circuit；
The difference channel adopts OPA404 operational amplifiers, and circuit structure is Differential Input operational amplification circuit, by two
The pulsed laser signal of the carrying fan blade status information that road receives carries out difference, obtains two groups of differential signals, and signal high level is
5V, low level is 0；
The voltage matches circuit is resistant series structure, and signal voltage is reduced to into about 1V, realizes the input with A/D
Signal Matching.
In such scheme, the single-chip machine information processing module is changed with C8051F020 single-chip microcomputers as core comprising A/D
Module, LED and MD050SD touch screens；
The A/D modular converters gather two paths of data simultaneously, and per 200 groups of road, 50 per group, carrying out being added up in group obtains two
Two groups of data of road signal, by the cumulative Feature Fusion of the amplitude Characteristics and time domain of signal, according to fusion feature whether meet through
Whether the defect characteristic that support vector machine training draws judges through-flow fan blade containing defective；Single-chip microcomputer is according to judged result control
LED and touch screen show testing result, and human-computer interaction module is used to detect the adjustment and data statisticss of parameter.
Compared with prior art, the invention has the beneficial effects as follows：The present invention is based on laser technology, is mainly used in through-flow fan blade
It is molded and lacks material defect on-line monitoring and diagnose, it is adaptable to which the through-flow fan blade of the blowing device such as air-conditioning is scarce during processing
Material defect real-time monitoring, with man-machine interaction and testing result display function, and lacks material defect with other through-flow fan blade injections
Detection means is compared, and improves discrimination and identification certainty to small-sized defect.
Description of the drawings
Fig. 1 is that the through-flow fan blade injection in the present invention based on laser lacks material defect detecting device composition figure；
Fig. 2 is tested through-flow fan blade schematic diagram in the present invention；
Fig. 3 is cylindrical detection platform and sensor mounting means schematic diagram in the present invention；
Fig. 4 is Laser emission array scheme of installation in the present invention；
Fig. 5 is laser sensor receiving array scheme of installation in the present invention；
Fig. 6 produces circuit and voltage matches circuit diagram for laser signal in the present invention；
Fig. 7 is signal processing circuit figure in the present invention；
Fig. 8 is overall circuit figure in the present invention.
In figure：1st, blade；2nd, annular base；3rd, detection platform shell；4th, detection platform base；5th, detection platform center
Support；6th, laser sensor receiving array；7th, laser pickoff；8th, Laser emission array；9th, generating laser；10th, battle array is launched
The fixed inserted sheet of row；11st, generating laser；12nd, receiving array fixes inserted sheet；13rd, laser pickoff positioning wire.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and detailed description, but protection scope of the present invention
It is not limited to this.
Fig. 1 show the through-flow fan blade injection based on laser sensor array of the present invention and lacks material defect detecting device
A kind of embodiment, the through-flow fan blade injection based on laser sensor array lacks material defect detecting device includes Laser emission
Array, laser sensor receiving array, analog signal processing circuit module, single-chip machine information processing module and power module.Its
Described in power module include multi-channel switch power and decompression voltage regulator, by power module, 220 alternating voltages are converted to
2.5V, 3.3V, 5V and ± 12V DC voltages, for sensor, single-chip microcomputer, amplifier, 555 intervalometers, reducing motor, touch screen
Deng the power supply of device.
The through-flow fan blade of this device detection is as shown in Fig. 2 with the different leaves spacing spy different from impeller axis angle
Point.The blade 1 of through-flow fan blade is welded on annular base 2.
This device operation principle is as follows：
Circuit evolving 350HZ pulse signals are produced by pumping signal of the NE555 intervalometers for core, through voltage matches electricity
Road adjusts voltage to 3.3V, is input into Laser emission array.Laser emission array emitter two-way 350HZ pulse laser beams, through quilt
Survey through-flow fan blade modulation, received by laser sensor receiving array, produce the tunnel output signals of two Zu Gong tetra-, wherein through-flow fan blade by
Motor-driven pallet is rotated, and each detection process continues 5 seconds.Laser sensor receiving array converts optical signal into electricity
Pressure signal, output signal type is square-wave signal, and high level is 5V, and low level is 0.Two groups of signals are input into into respectively corresponding difference
In parallel circuit, two differential signals are obtained.Voltage matches circuit enters signal voltage with the A/D modular converters of single-chip core core
Row voltage matches, signal output to AIN0 and AIN1 interfaces carry out A/D conversions.The data continuous acquisition time is 5 seconds, now through-flow
Fan blade just rotates a circle on rotating mechanism, it is ensured that the detection to whole blades, 200 groups is divided to per road signal, per group of collection 50
It is secondary, the data that 50 times collect are averaged and obtains array a0And b0, carrying out adding up obtains array a1And b1, per group each 200
Numerical value, it is flawless in the case of institute's value should be 0.The data obtained is ranked up by descending order, is therefrom extracted and is lacked
Sunken feature.According to, containing high level is output as after the irradiation of defective vanes, zero defect is low level feature, containing height in time domain
The signal of level, that is, with amplitude as defect characteristic, obtains array a as flaw indication0And a1.Trained according to support vector machine
The defect characteristic for arriving, contrasts the parameter in array, generates new array A0And A1, comprising 200 data, wherein it is special to meet defect
The parameter correspondence levied generates 1, and flawless data are 0.According to the high level duration in detection process containing defective blade
Longer the characteristics of, the data added up through time domain can amplify this difference, therefore time domain accumulated value is obtained as defect characteristic
Array b0And b1.Contrast Rule of judgment, meets the generation numerical value 1 of defect condition, ungratified to generate 0, obtains new array B0With
B1.By A0、A1、B0And B1By formulaIt is calculated numerical value C0And C1If, C0And C1Surpass
Cross 10 and think that the through-flow fan blade contains injection and lacks material defect, Single-chip Controlling red LED is bright, and touch screen shows unqualified, does not conform to
Lattice number adds 1, and sum Jia 1；If C0Or C1Less than 10, it is believed that the through-flow fan blade lacks material defect, Single-chip Controlling green LED without injection
Bright, touch screen shows qualified, and passing number adds 1, and sum Jia 1.Detection parameter is preset as the through-flow fan blade product of four kinds of different sizes,
Click on during change detection parameter and arrange, into the setting options page, parameter is clicked on, into parameter setting page.The page shows 1,
2nd, 3,4 totally four options, click correspondence model, click determination, changes and detects that parameter simultaneously returns to detection interface；Click on and cancel, no
Change detection parameter returns to detection interface.
The sensor layout diagram of this device is as shown in figure 3, wherein detection platform shell 3 is arranged on detection for cylinder
On platform base 4, detection platform center bearing bracket 5 is arranged in detection platform shell 3 for cylinder, detection platform center bearing bracket 5
With detection platform shell 3 in a ring, detection platform center bearing bracket 5 and detection platform shell 3 are respectively provided on two sides with symmetrical opening
Groove, laser sensor receiving array 6 is vertically mounted in the fluting of detection platform center bearing bracket 5, laser sensor receiving array 6
Laser pickoff 7 is provided with, Laser emission array 8 is vertically mounted in the fluting of detection platform shell 3, and generating laser 9 is pacified
It is mounted on Laser emission array 8, laser pickoff 7 is corresponding with the position of generating laser 9.Laser emission array in the present embodiment
It is made up of two-way generating laser and two-way laser pickoff respectively with laser sensor receiving array, one one receipts, totally two groups；
Laser beam all the way in each of which group is located in the plane of through-flow fan blade bottom, and another road laser beam is located at through-flow fan blade middle part
In section.Two groups of transmitting light beams are pointed to conversely, a branch of launch from inside to outside, the then ecto-entad transmitting of another beam.Generating laser
Ensured just to installing by frame for movement with sensor is received.Generating laser running voltage is 3.3V, and two-way laser beam is mutually put down
OK, it is as shown in Figure 4 Laser emission array scheme of installation, it can be seen that frame for movement fixed space position, wherein emission array
Fixed inserted sheet 10 is corresponding with the position of generating laser 11.Running voltage 5V of receptor, as shown in Figure 5 laser sensor reception
Array scheme of installation, it can be seen that frame for movement is fixed, wherein laser pickoff positioning wire 13 is provided with from top to bottom two
Receiving array fixes inserted sheet 12.
The generating laser pumping signal that this device is adopted produce circuit and voltage matches circuit as shown in fig. 6, using
NE555 chips, produce 350HZ square-wave signals, and high level is 5V, and voltage matches circuit is by needed for pulse signal and generating laser
Transmission signal matching.
The laser signal process circuit that this device is adopted is as shown in fig. 7, comprises difference channel and voltage matches circuit, are used for
The pulsed laser signal of the carrying fan blade status information that two-way is received carries out difference, and by differentiated output signal voltage with
Signal voltage needed for A/D inputs is matched.
The single-chip microcomputer that this device is adopted is for C8051F020, and the single-chip microcomputer is compatible with common C51 series monolithics, increases outer
Portion's interrupt source and reset source, inside has independent clock source, with more 8 I/O mouths of extension.Crystal oscillator is in the present embodiment
22MHz.The major function of single-chip microcomputer is acquisition testing data, carry out data temporal signatures extract and Feature Fusion, according to determining
Plan rule realizes that Real time identification, control LED and the touch screen of defect shows testing result and realize man-machine interaction by touch screen.
The data that A/D is changed are divided into into 200 groups in example, per group of 50 data.Carry out it is cumulative in group, obtain 200 it is cumulative and, according to
Numerical values recited sorts.From defect characteristic in the time domain distribution situation of data, whether tested through-flow fan blade is judged according to decision ruless
Lack material defect containing injection.Complete Single-chip Controlling touch screen and LED after detection process and show testing result.
Testing result display module includes MD050SD touch screens and LED in this device.One-time detection process in the present embodiment
Screen display is touched after end qualified.Meanwhile, green LED is bright, represents tested through-flow fan blade and lacks material defect without injection.Touch screen display
Show unqualified, red LED is bright, represent tested through-flow fan blade and there is the scarce material defect of injection；Every time according to testing result after detection beam
Statistics passing number, number of non-compliances and sum, show statistics in touch screen.
The overall circuit connection of this device is as shown in Figure 8.
It should be understood that, although this specification is described according to each embodiment, but not each embodiment only includes one
Individual independent technical scheme, this narrating mode of description is only that for clarity those skilled in the art will should say
Bright book as an entirety, the technical scheme in each embodiment can also Jing it is appropriately combined, forming those skilled in the art can be with
The other embodiment of understanding.
The a series of detailed description of those listed above is only for illustrating for the possible embodiments of the present invention,
They simultaneously are not used to limit the scope of the invention, all Equivalent embodiments made without departing from skill spirit of the present invention or change
Should be included within the scope of the present invention.
Claims (10)
1. a kind of through-flow fan blade injection based on laser sensor array lacks material defect inspection method, it is characterised in that include with
Lower step：
S1, Laser emission array emitter pulsed laser signal；
S2, laser sensor receiving array receive the pulsed laser signal through through-flow fan blade；
S3, analog signal processing circuit module carry out difference, voltage matches to the pulse laser array signal for receiving, and are input into
To Chip Microcomputer A/D interface；
S4, Jing after A/D is by signal digitized, feature extraction is carried out to signal by single-chip machine information processing module in real time, feature is melted
Close and decision discernment；
S5, the whether qualified information of through-flow fan blade product is directly exported by display module；
S6, human-computer interaction module realize detection parameter setting, detection process control and detection data statistics.
2. the through-flow fan blade injection based on laser sensor array according to claim 1 lacks material defect inspection method, its
It is characterised by, Laser emission array emitter signal adopts two-way pulsed laser signal in step S1, wherein all the way signal is made
For reference signal, another road signal is used as detection signal, and two-way transmission signal parameters are consistent.
3. the through-flow fan blade injection based on laser sensor array according to claim 1 lacks material defect inspection method, its
It is characterised by, the laser sensor receiving array in step S2 synchronously receives the two-way pulse laser letter through through-flow fan blade
Number, signal will be modulated by through-flow fan blade blade, and be carried with the presence or absence of the information for lacking material defect.
4. the through-flow fan blade injection based on laser sensor array according to claim 1 lacks material defect inspection method, its
It is characterised by, the pulse of the carrying fan blade status information that the analog signal processing circuit module in step S3 receives two-way
Laser signal carries out difference, obtains the differential signal of two paths of signals, then by voltage matches circuit realiration and A/D inputs
Signal Matching.
5. the through-flow fan blade injection based on laser sensor array according to claim 1 lacks material defect inspection method, its
It is characterised by, the single-chip machine information processing module in step S4 is carried out using C8051F020 single-chip microcomputers to the data for gathering
Real-time time-domain feature extraction, obtains feature a that adds up with regard to the time domain of defectn={ an,0、an,1、……an,199And signal amplitude ginseng
Number bn={ bn,1、bn,2……bn,199(n=0,1)；
By anAnd bnIn numerical value contrasted with support vector machine training a, b for obtaining respectively, be designated as 1 more than a, b, be less than
Be designated as 0, generate new array An={ An,0、An,1、……An,199And Bn={ Bn,1、Bn,2……Bn,199(n=0,1)；
The cumulative feature of time domain and signal amplitude of defect are pressedCarry out Feature Fusion to obtain
C0、C1, contrast defect characteristic K0And K1If, C0More than K0Or C1More than K1, the through-flow fan blade exists to be molded to lack expects defect；If C0It is little
In K0And C1Less than K1, the through-flow fan blade lacks material defect without injection, and recognition result is sent to into display module.
6. the through-flow fan blade injection based on laser sensor array according to claim 1 lacks material defect inspection method, its
It is characterised by, the human-computer interaction module of step S6 realizes the through-flow fan blade defect to different model by adjustment detection parameter
Detection, it is possible to carry out reporting for statistical data.
7. a kind of through-flow fan blade injection realized described in claim 1 based on laser sensor array lacks material defect inspection method
Detection means, it is characterised in that including Laser emission array, laser sensor receiving array, analog signal processing circuit module,
Single-chip machine information processing module and power module；
The Laser emission array is made up of generating laser, for launching two-way lock-out pulse laser signal；
The laser sensor receiving array is by laser pick-off sensor group into for receiving the two-way arteries and veins of Jing through-flow fan blades modulation
Impulse optical signal；
The analog signal processing circuit module is made up of difference channel, voltage matches circuit, for the carrying for receiving two-way
The pulsed laser signal of fan blade status information carries out difference；
The single-chip machine information processing module is electrically connected with analog signal processing circuit module, for by the amplitude Characteristics of signal and
Time domain adds up Feature Fusion, the defect characteristic drawn through support vector machine training whether is met according to fusion feature and judges through-flow
It is defective whether fan blade contains, and shows testing result；
The power module respectively with Laser emission array, laser sensor receiving array, analog signal processing circuit module, list
Piece machine information processing module is electrically connected, for providing required supply voltage.
8. the through-flow fan blade injection based on laser sensor array according to claim 7 lacks the inspection of material defect inspection method
Survey device, it is characterised in that the Laser emission array and laser sensor receiving array respectively by two-way generating laser and
Two-way laser pickoff is constituted, and emitter launch wavelength is 650nm laser beams, and receptor model IS0203 receives wavelength
Scope is 400-1100nm；
, using one one receipts pattern, totally two groups, the laser beam all the way in each of which group is located at and passes through for emission array and receiving array
In the plane of stream fan blade bottom, another road laser beam is located in the section of through-flow fan blade middle part, and two groups of transmitting light beams are pointed to conversely, one
Beam is launched from inside to outside, the then ecto-entad transmitting of another beam, and transmitting and reception sensor are ensured just to installing by frame for movement.
9. the through-flow fan blade injection based on laser sensor array according to claim 7 lacks the inspection of material defect inspection method
Survey device, it is characterised in that the analog signal processing circuit module is made up of difference channel, voltage matches circuit；
The difference channel adopts OPA404 operational amplifiers, and circuit structure is Differential Input operational amplification circuit, and two-way is connect
The pulsed laser signal of the carrying fan blade status information of receipts carries out difference, obtains two groups of differential signals, and signal high level is 5V, low
Level is 0；
The voltage matches circuit is resistant series structure, and signal voltage is reduced to into about 1V, realizes the letter with the input of A/D
Number matching.
10. the through-flow fan blade injection based on laser sensor array according to claim 7 lacks material defect inspection method
Detection means, it is characterised in that the single-chip machine information processing module is changed with C8051F020 single-chip microcomputers as core comprising A/D
Module, LED and MD050SD touch screens；
The A/D modular converters gather two paths of data simultaneously, per 200 groups of road, 50 per group, carry out the cumulative two-way that obtains in group and believe
Number two groups of data, whether the cumulative Feature Fusion of the amplitude Characteristics and time domain of signal meets through supporting according to fusion feature
Whether the defect characteristic that vector machine training draws judges through-flow fan blade containing defective；Single-chip microcomputer according to judged result control LED and
Touch screen shows testing result, and human-computer interaction module is used to detect the adjustment and data statisticss of parameter.
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|---|---|---|---|
| CN201611150585.0A CN106596560B (en) | 2016-12-14 | 2016-12-14 | A kind of scarce material defect inspection method of through-flow fan blade injection molding and device based on laser sensor array |
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| CN201611150585.0A CN106596560B (en) | 2016-12-14 | 2016-12-14 | A kind of scarce material defect inspection method of through-flow fan blade injection molding and device based on laser sensor array |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111256656A (en) * | 2020-02-27 | 2020-06-09 | 福建中研机电科技有限公司 | Multistage variable air volume motor fan blade calibration device and method |
| CN114737951A (en) * | 2022-04-26 | 2022-07-12 | 燕山大学 | Intelligent optical fiber detection system for measuring gas holding rate of gas-liquid two-phase flow of horizontal well |
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| CN111256656A (en) * | 2020-02-27 | 2020-06-09 | 福建中研机电科技有限公司 | Multistage variable air volume motor fan blade calibration device and method |
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| CN114737951B (en) * | 2022-04-26 | 2024-04-16 | 燕山大学 | Intelligent optical fiber detection system for measuring gas holding rate of gas-liquid two-phase flow of horizontal well |
| CN115110156A (en) * | 2022-05-19 | 2022-09-27 | 杭州纺织机械集团有限公司 | Photoelectric cocoon volume detecting device for cocoon feeding machine |
| CN114782756A (en) * | 2022-06-20 | 2022-07-22 | 深圳新视智科技术有限公司 | Defect detection method, device and equipment based on feature fusion and storage medium |
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