CN207923426U - A kind of vibrating screen failure monitoring system - Google Patents
A kind of vibrating screen failure monitoring system Download PDFInfo
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- CN207923426U CN207923426U CN201721859589.6U CN201721859589U CN207923426U CN 207923426 U CN207923426 U CN 207923426U CN 201721859589 U CN201721859589 U CN 201721859589U CN 207923426 U CN207923426 U CN 207923426U
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- vibrating screen
- acceleration transducer
- monitoring system
- failure monitoring
- signal
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 17
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- 238000000513 principal component analysis Methods 0.000 description 4
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Abstract
A kind of vibrating screen failure monitoring system, including vibrating screen, acceleration transducer, AD data acquisition devices, ADC analog-digital commutators, dsp processor and LCD display module；The acceleration transducer is installed on vibrating screen to detect acceleration signal；The AD data acquisition devices input terminal is connected with acceleration transducer to acquire acceleration signal；The ADC analog-digital commutators are connected with the output end of AD data acquisition devices to convert analog signals into digital signal；The dsp processor is connected with ADC analog-digital commutators and LCD display module with computation model diagnosis.The utility model has the function of monitoring automatically, facilitates producer's operation and maintenance, can effectively reduce production cost, improves generation efficiency, and good economic benefit and social benefit are obtained for enterprise.
Description
Technical field
The utility model is related to engineering machinery field, especially a kind of vibrating screen failure monitoring system.
Background technology
Vibrating screen is to generate a kind of screening plant for moving back and forth and working using the exciting force of vibrator.In recent years,
Essential important equipment in stone mining development is increasingly becomed, the development even for social economy's industry all generates extremely
Close important role.However, the parts of its primary structure subject alternating load for a long time in the course of work, device structure
Damage is inevitable.In addition vibrating screen working environment is severe, is placed in open air often, is not easy to overhaul, once vibrating screen
Occur failure when work, huge economic loss will necessarily be caused to enterprise.Under normal conditions, enterprise is sifted out in vibration
After existing failure, just take up to overhaul equipment, it, can be with as the obvious failure such as screens break, spring failure
Related spare and accessory parts are replaced to repair, and the failures such as more serious failure such as sieve sideway is serious, discharge port fracture, it is difficult to it excludes,
The reason of being not easy to find failure.Vibrating screen fault diagnosis is also merely resting on traditional artificial method for diagnosing faults,
The fault handling method for usually carrying out " hoping, hear, ask, cut " by sense organ organ using the rich experiences of worker, without one
Special the equipment or instrument is planted to be directed to the fault diagnosis that vibrating screen carries out system.
Utility model content
The main purpose of the utility model is to overcome drawbacks described above in the prior art, propose a kind of automatic monitoring of realization
Function, facilitate producer's operation and maintenance, can effectively reduce production cost, improve the vibrating screen failure monitoring system of generation efficiency
System.
The utility model adopts the following technical solution：
A kind of vibrating screen failure monitoring system, including vibrating screen, it is characterised in that：Further include acceleration transducer, AD numbers
According to harvester, ADC analog-digital commutators, dsp processor and LCD display module；The acceleration transducer is installed on vibrating screen
On to detect acceleration signal；The AD data acquisition devices input terminal is connected with acceleration transducer to acquire acceleration signal；
The ADC analog-digital commutators are connected with the output end of AD data acquisition devices to convert analog signals into digital signal；The DSP
Processor is connected with ADC analog-digital commutators and LCD display module with computation model diagnosis.
Preferably, the acceleration transducer is 3-axis acceleration sensor, built-in shearing piezoelectric ceramics crystal wafer.
Preferably, the AD data acquisition devices can carry out the optional formula integrated circuit piezoelectric formula of software to acceleration transducer
Signal condition, and the exciting current of 2mA is provided.
Preferably, the ADC analog-digital commutators use high speed serialization and parallel interface, possess 8/6/4 road synchronized sampling
Input, the bipolar signal input of support ± 10V or ± 5V.
Preferably, further include having alarm module, which is connected with the dsp processor.
From the above description of the utility model, it can be seen, compared with prior art, the utility model has following beneficial to effect
Fruit：
The system of the utility model can monitor the operation conditions of vibrating screen, including motional amplitude, frequency, vibration side in real time
To key parameters such as angles, vibration data is recorded, draws oscillating curve, the variation tendency in conjunction with vibrational state and report set by user
Alert mechanism, quickly judges whether vibratory equipment is normal, realizes the function of monitoring automatically, facilitates producer's operation and maintenance, can have
Effect reduces production cost, improves generation efficiency, and good economic benefit and social benefit are obtained for enterprise.
Description of the drawings
Fig. 1 is the structure composition figure of the utility model failure monitoring system.
Wherein：1, vibrating screen, 2, acceleration transducer, 3, AD data acquisition devices, 4, ADC analog-digital commutators, 5, DSP
Processor, 6, LCD display module, 7, alarm module.
Specific implementation mode
Below by way of specific implementation mode, the utility model will be further described.
Vibrating screen malfunction test platform is built according to vibrating screen kinetic model, tests to obtain event by different types of faults
Hinder feature raw information.Common fault type is exciting force imbalance fault, spring rate variation event respectively there are three types of including
Barrier and spring heights change failure.
Referring to Fig.1, the utility model proposes a kind of vibrating screen failure monitoring systems, including vibrating screen 1, acceleration transducer
2, AD data acquisition devices 3, ADC analog-digital commutators 4, dsp processor 5 and LCD display module 6 etc..The vibrating screen 1 can be used
Adjustable motor synchronizing probability screen, the compass screen surface to be successively decreased from top to bottom by a box frame and three layer screen pore size are formed, application
In the screening of sandstone aggregate.The screen box on spring is set to make periodical straight-line oscillation equipped with shock electric machine on vibrating screen 1.Material is from shaking
It is rapid loose after the screen box upper feed inlet of dynamic sieve 1 enters, and be evenly distributed on each layer compass screen surface by different grain size, it is various
The material of grade is divided into four roads and is discharged from compass screen surface lower end and discharge port, has the advantages that treating capacity is big and power consumption is small.
The acceleration transducer 2 is installed on to detect acceleration signal on vibrating screen 1, and three axial current signals can be selected
Output type HK9190-3, the acceleration transducer 2 need to detect accurate acceleration value, for calculating the speed of vibrating screen 1, shaking
The indexs such as width and deflection.The acceleration transducer 2 is shearing structure, built-in shearing piezoelectric ceramics crystal wafer, using bilayer
Shell structure, sturdy and durable, favorable sealing property are used for the workplace of bad environments.
3 input terminal of AD data acquisition devices is connected with acceleration transducer 2 to acquire acceleration signal, and NI can be selected
9234 capture cards of NI of company, possess 4 Channel Dynamic Signal acquisition modules, can carry out high-acruracy survey.It can also be to acceleration
Sensor 2 carries out optional formula integrated circuit piezoelectric formula (IEPE) signal condition of software, and provides the exciting current of 2mA.
The ADC analog-digital commutators 4 are connected with the output end of AD data acquisition devices 3 to convert analog signals into number
The AD7606 chips of ADI companies can be selected in signal, and conversion speed is high, energy real-time detecting system, while reading 12 roads letter
Number；And high speed serialization and parallel interface are used, possess 8/6/4 road synchronized sampling input, the bipolarity letter of support ± 10V or ± 5V
Number input.
The dsp processor 5 is connected with ADC analog-digital commutators 4 and LCD display module 6 with computation model diagnosis.DSP
The dsp chip of TI companies may be selected in processor 5 and OMAP-L138 processors, dominant frequency can reach 456MHz, can handle huge
Database, while the real-time of device can be taken into account again.It uses enhanced DMA controller (EDMA3), gathers around
There are 64 independent DMA channels and 16 quick DMA channels.
The information such as frequency, amplitude and deflection are shown in the LCD display module 6.Further include having alarm module 7, the report
Alert module 7 is connected with dsp processor 5, when vibrating screen breaks down, as exciting force is uneven, spring rate changes, spring is high
When degree variation, alarm module 7 is alarmed.
Steps are as follows for the method citing being monitored using Tthe utility model system：
1) acceleration signal of vibrating screen fault signature is acquired by acceleration transducer 2 and AD data acquisition devices 3,
For analog signal, digital signal is converted by ADC analog-digital commutators 4.
2) the skewness factor, kurtosis factor, nargin of the selection of dsp processor 5 acceleration signal, peak value are to extract temporal signatures
Amount, and three layers of wavelet decomposition are carried out to extract frequency domain character amount to acceleration signal by wavelet transform.
The skewness factor is the Third-order cumulants of signal, the asymmetry for describing signal；Kurtosis factor is signal
Fourth order cumulant reflects the shock characteristic in vibration signal for describing signal steep；Nargin is for detecting mechanical equipment
Abrasion condition；Peak value is used to detect in signal with the presence or absence of the statistical indicator of impact.
Three layers of wavelet decomposition wherein are carried out to acceleration signal, selects db5 small echos to carry out 3 layers of decomposition, extracts d3 layers of small echo
D3 layers of wavelet coefficient are divided into 60 sections by coefficient, i.e. time window is 0.5s, calculates the local energy E in these sections.In space
X-direction, Y-direction d3 layer coefficients local energies E be normal 5~6 times, Z-direction is 9~11 times, and spring rate failure is then
It it is 1.5~2 times, Z-direction can then reach 2~3 times.Therefore the d3 layer coefficients local energies E of Z-direction can be used as major failure knowledge
Other feature, other directions can be used for assisting in identifying.
3) using the fault diagnosis model based on principal component analysis and support vector machines to the temporal signatures amount and frequency of extraction
Characteristic of field amount carries out analysis and calculation model diagnosis, can effectively identify vibrating screen failure by the Model Diagnosis rate, overcome letter
Redundancy is ceased, theoretical foundation is provided for the exploitation of vibrating screen failure monitoring system.It should be based on principal component analysis (PCA) and supporting vector
The fault diagnosis model of machine (SVM) chooses the d3 layer coefficients local energy E of the i.e. Z-direction of the maximum characteristic quantity of weighing factor indirectly,
Greatly reduce characteristic quantity quantity, as a result diagnosis is 91.85%, and operation time 6.216s effectively increases fault diagnosis
Operation efficiency.A kind of feature that principal component analysis is the statistical properties such as the independence that data set is utilized, correlation and carries out is empty
Between convert, this convert reduces the dimension of data set in the case of lossless or little loss data set information, by higher-dimension
Feature vector is fused to low-dimensional feature vector, thus is to choose indirectly.
The above is only the specific embodiments of the present invention, but the design concept of the present invention is not limited thereto,
All non-essential modifications to the present invention made by this concept should all belong to the row for invading scope of protection of the utility model
For.
Claims (5)
1. a kind of vibrating screen failure monitoring system, including vibrating screen, it is characterised in that：Further include acceleration transducer, AD data
Harvester, ADC analog-digital commutators, dsp processor and LCD display module；The acceleration transducer is installed on vibrating screen
To detect acceleration signal；The AD data acquisition devices input terminal is connected with acceleration transducer to acquire acceleration signal；It should
ADC analog-digital commutators are connected with the output end of AD data acquisition devices to convert analog signals into digital signal；At the DSP
Reason device is connected with ADC analog-digital commutators and LCD display module with computation model diagnosis.
2. a kind of vibrating screen failure monitoring system as described in claim 1, it is characterised in that：The acceleration transducer is three
Axle acceleration sensor, built-in shearing piezoelectric ceramics crystal wafer.
3. a kind of vibrating screen failure monitoring system as described in claim 1, it is characterised in that：The AD data acquisition devices energy
The optional formula integrated circuit piezoelectric formula signal condition of software is carried out to acceleration transducer, and the exciting current of 2mA is provided.
4. a kind of vibrating screen failure monitoring system as described in claim 1, it is characterised in that：The ADC analog-digital commutators
Using high speed serialization and parallel interface, possess 8/6/4 road synchronized sampling input, the bipolar signal of support ± 10V or ± 5V are defeated
Enter.
5. a kind of vibrating screen failure monitoring system as described in claim 1, it is characterised in that：Further include having alarm module, it should
Alarm module is connected with the dsp processor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721859589.6U CN207923426U (en) | 2017-12-26 | 2017-12-26 | A kind of vibrating screen failure monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721859589.6U CN207923426U (en) | 2017-12-26 | 2017-12-26 | A kind of vibrating screen failure monitoring system |
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| CN207923426U true CN207923426U (en) | 2018-09-28 |
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| CN201721859589.6U Expired - Fee Related CN207923426U (en) | 2017-12-26 | 2017-12-26 | A kind of vibrating screen failure monitoring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152064A (en) * | 2017-12-26 | 2018-06-12 | 华侨大学 | A kind of vibrating screen fault signature extracting method and failure monitoring system |
| CN114733756A (en) * | 2022-06-10 | 2022-07-12 | 云翔赛博(山东)数字技术有限公司 | Embedded sieve plate state monitoring device and monitoring method thereof |
-
2017
- 2017-12-26 CN CN201721859589.6U patent/CN207923426U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152064A (en) * | 2017-12-26 | 2018-06-12 | 华侨大学 | A kind of vibrating screen fault signature extracting method and failure monitoring system |
| CN114733756A (en) * | 2022-06-10 | 2022-07-12 | 云翔赛博(山东)数字技术有限公司 | Embedded sieve plate state monitoring device and monitoring method thereof |
| CN114733756B (en) * | 2022-06-10 | 2022-09-30 | 云翔赛博(山东)数字技术有限公司 | Embedded sieve plate state monitoring device and monitoring method thereof |
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Granted publication date: 20180928 |
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| CF01 | Termination of patent right due to non-payment of annual fee |