CN106840374A - Array scanning noise-measuring system - Google Patents
Array scanning noise-measuring system Download PDFInfo
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- CN106840374A CN106840374A CN201710009960.8A CN201710009960A CN106840374A CN 106840374 A CN106840374 A CN 106840374A CN 201710009960 A CN201710009960 A CN 201710009960A CN 106840374 A CN106840374 A CN 106840374A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
A kind of array scanning noise-measuring system, including：Two-dimentional Noise Acquisition unit, driver element and control unit, wherein：Control unit sends control and requires according to the input of gauger to driver element, driver element converts according to control requirement and is processed into work order and sends to two-dimentional Noise Acquisition unit, two-dimentional Noise Acquisition unit makes sensor array be listed in the motion realized in whole perpendicular under the driving of horizontal, vertical both direction motor, the noise information in the given perpendicular of measurement.The array noise test device that can perpendicular in realize scanning whole measurement points of the present invention with high position precision, testing efficiency high.
Description
Technical field
The present invention relates to a kind of electromechanical integration noise testing equipment, specifically a kind of array scanning noise testing dress
Put.
Background technology
It is frequently necessary to take the measure of noise reduction in industrial circle to control the noise of product, and controls the noise of product first
First need to carry out noise source diagnosis, determine the position of noise source and the characteristic of each noise source.If wanting to measure a certain product
Noise, it is desirable to have related noise-measuring system., it is necessary to such a is measured after the algorithm research to noise processed is completed
Device measures required data.
The content of the invention
In noise testing, sensor stand movement is troublesome, positioning precision is low, test spends for prior art for the present invention
The defect such as the time is long, experimental provision application field is narrow and detection positioning precision is poor, proposes a kind of array scanning noise testing
Device, the array noise that the whole measurement points of scanning can be realized in perpendicular with high position precision, testing efficiency high
Test device.
The present invention is achieved by the following technical solutions：
The present invention relates to a kind of array scanning noise-measuring system, including：Two-dimentional Noise Acquisition unit, driver element and control
Unit processed, wherein：Control unit sends control and requires according to the input of gauger to driver element, and driver element will according to control
Ask and convert and be processed into work order and send to two-dimentional Noise Acquisition unit, two-dimentional Noise Acquisition unit is listed in sensor array
The motion in whole perpendicular, the noise in the given perpendicular of measurement are realized under the driving of horizontal, vertical both direction motor
Information.
Described two-dimentional Noise Acquisition unit includes：Detection framework, it is slideably positioned in detection framework and slides laterally machine
Structure and the longitudinal sliding motion mechanism with sensor array being arranged on transverse sliding mechanism, wherein：Sensor array is fixed
It is arranged in longitudinal sliding motion mechanism and is positioned by laser sensing and realizes accurate length travel.
Described longitudinal sliding motion mechanism and transverse sliding mechanism is independent motor-driven guide block sliding track mechanism.
Described sensor array is used but is not limited to the acoustic sensor composition of multiple parallel connections, and its arrangement mode is preferably adopted
Arranged with linear fashion.
Described driver element includes：Main control module, A/D modular converters, it is respectively arranged at longitudinal sliding motion mechanism and transverse direction
Two groups of laser displacement sensors, laser positioning plate and servo-driver on slide mechanism, wherein：Main control module is received and come from
The control requirement of control unit, the object run value that control unit gives is converted into pulse number and the side of servomotor needs
To output services instruct the servo-driver to longitudinal sliding motion mechanism and transverse sliding mechanism, A/D modular converters to receive respectively
The analog voltage signal of two-dimentional Noise Acquisition unit is simultaneously converted into data signal and exports to main control module to realize accurate position
Feedback.
Described control unit includes：Reseting module, transducer calibration module, single-point input operation module and list input
Operation module, wherein：Transducer calibration module is demarcated by the distance that sensor run unit length needs, and obtains list
Position distance required for umber of pulse information and export respectively to reseting module, single-point input operation module and list input run mould
Block, reseting module sends the control requirement of reset to driver element so that sensor array in two-dimentional Noise Acquisition unit
It is zeroed position；Single-point input operation module sends the control requirement that single coordinate is moved to driver element so that two-dimentional noise is adopted
Sensor array in collection unit reaches the specified location in detection framework；List input operation module sends many to driver element
What individual coordinate was moved causes that the sensor array in two-dimentional Noise Acquisition unit reaches detection successively according to the time sequencing of setting
Several specified locations in framework.
The present invention relates to the measuring method of said apparatus, comprise the following steps：
The first step：Measured object is positioned in the opposed vertical plane of noise-measuring system and selected measurement object
Measurement zero point, needed to select suitable measuring distance according to test；
Second step：The total power switch of measurement apparatus is opened, operation control unit carries out the Aligning control operation of X, Y-axis；
3rd step：Operation control unit, carries out laser sensor system proving operation；
4th step：Operation control unit, controls sensor array to run to aiming spot after input purpose point coordinates；
5th step：The position of object is readjusted, the measurement zero point of object is nethermost with the 4th step sensor array
Acoustic sensor center overlaps；
6th step：As needed selection single-point operating measurement or list measure, and control sensor array run to
First aim point position.
7th step：Servomotor brakes, and carries out noise testing；
8th step：If the 6th step is selected but point measurement, the coordinate of next measurement point is input into, carries out the survey of next impact point
Amount, until all impact points are measured and finished；If the 6th step selective listing operating measurement, it is not required to be input into next point coordinates, directly
Connect to operate to run to be measured to all impact point measurements to subsequent point and finish.
Technique effect
Compared with prior art, the time required for the present invention substantially reduces experimental implementation, improve positioning precision.Hand
The position that dynamic movement at least just can determine that one-shot measurement in 1 minute, automatic running is only needed several seconds；The present invention improves positioning precision
And the degree of accuracy of noise testing.
Brief description of the drawings
Fig. 1 is general structure axonometric drawing of the invention；
Fig. 2 is general structure front view of the invention；
Fig. 3 is the partial enlarged drawing at A in Fig. 1；
Fig. 4 a are the partial enlarged drawing at B in Fig. 1；
Fig. 4 b are the partial enlarged drawing at B in Fig. 1；
Fig. 5 is the partial enlarged drawing at C in Fig. 1；
Fig. 6 is driver element schematic diagram；
Fig. 7 is laser displacement sensor system calibrating function program flow chart；
Fig. 8 is sensor array Aligning control function program flow chart；
Fig. 9 is that sensor array pinpoints operation function program flow diagram；
Figure 10 is sensor array list operation function program flow diagram；
In figure：1 sensor, 2 synchronous cross belt wheels, 3 limit switches, 4 base supports, 5 synchronous cross bands, 6 cross slide ways,
7 cross motors, 8 longitudinal motors, 9 sensor stands, 10 longitudinal rails, 11 horizontal cylindrical guides, 12 cylindrical guide sliding blocks, 13 are indulged
To Timing Belt, 14 longitudinal synchronous pulleys, 15 longitudinal sensor installing plates, 16 laser displacement sensors, 17 longitudinal rail sliding blocks, 18
Sensor stand installation set, 19 longitudinal laser positioning plates, 20 longitudinal Timing Belt clamping plates, 21 longitudinal motor mounting brackets, 22 transverse directions are same
Step band clamping plate, 23 cross slide way slide blocks.
Specific embodiment
The present embodiment includes：Two-dimentional Noise Acquisition unit, driver element and control unit, wherein：Driver element is according to control
Requirement processed converts and is processed into work order and sends to two-dimentional Noise Acquisition unit, control unit according to the input of gauger to
Driver element sends control and requires, two-dimentional Noise Acquisition unit makes sensor array be listed under the driving of horizontal, vertical both direction motor
Realize the motion in whole perpendicular, the noise information in the given perpendicular of measurement.Wherein used in the present embodiment
PLC type number is FX3GA-24MT, the model HG-KN73BJ-S100 of servomotor, the model MR-JE- of servo-driver
70A, A/D modular converter model FX2N2AD, limit switch model are SN04-N, laser displacement sensor model HG-
C1400。
As shown in figure 1, two synchronous cross belt wheels 2, cross slide ways 6 are fixedly mounted in described two-dimentional Noise Acquisition unit
In on base support 4, synchronous cross band 5 connects two synchronous pulleys 2 of horizontal direction, and cross motor 8 is fixed on base support 4
Side, synchronous pulley 2 is installed on its output shaft.Longitudinal motor 7 and its support (enlarged drawing is Fig. 5) can be in cross slide ways 6
Upper slip.Several sensors 1 are installed on sensor stand 9, and sensor stand 9 is fixed with longitudinal rail sliding block and (amplified
Figure is Fig. 4), can be slided on longitudinal rail 10.Limit switch 3 is fixed on base support 4, horizontal direction guide rail two ends two
It is individual, two, vertical direction guide rail two ends.
Fig. 2 is the front view of whole test device, is not express in Fig. 1 clearly partly to be supplemented.Horizontal laser position
Displacement sensor 16 is installed on the side of base support 4, for detecting distance of the longitudinal rail apart from laser displacement sensor 16.
Fig. 3 is partial enlarged drawing at A in Fig. 1.Cross slide way 11 is fixed on the top of base support 4, and guide rail slide block 12 can
Slided on guide rail 11, longitudinal sensor installing plate 15 is fixed on cylindrical guide sliding block 12, longitudinal laser displacement sensor 16
It is fixed on longitudinal sensor installing plate 15, longitudinal synchronous pulley 14 is fixed on longitudinal rail 10, longitudinal Timing Belt 13 is connected
Two longitudinal synchronous pulleys.
Fig. 4 a are partial enlarged drawing at B in Fig. 1.Sensor stand installation set 18 is fixed on longitudinal rail sliding block 17, is indulged
To laser positioning plate 19 by being fixed on longitudinal rail sliding block 17, determination sensor support is relative to laser displacement sensor 16
Distance.Sensor stand 9 is installed in sensor stand installation set 18.
Fig. 4 b are partial enlarged drawing at B in Fig. 1, but different from the direction represented by Fig. 4 a, used as the supplement of Fig. 4 a.Longitudinal direction
Timing Belt clamping plate 20 is installed on longitudinal rail sliding block 17, and longitudinal Timing Belt 13 is then fixed on longitudinal Timing Belt clamping plate 20.
Fig. 5 is the partial enlarged drawing at C in Fig. 1.Cross slide way slide block 23 can be slided on cross slide way 5, longitudinal motor 7
It is fixed on longitudinal motor mounting bracket 21, longitudinal motor mounting bracket 21 is fixed in cross slide way slide block 23.Synchronous cross band 5 is consolidated
Due between synchronous cross band clamping plate 22 and cross slide way slide block 23.Longitudinal synchronous pulley 14 is installed on the output of longitudinal motor 7
On axle, it is connected with longitudinal synchronous pulley at the top of longitudinal rail 10 by longitudinal Timing Belt 13.
As shown in fig. 6, being the control principle drawing of described driver element, wherein computer is used as host computer, PLC technology
Device (PLC) is used as slave computer.The signal input that transverse direction, longitudinal spacing switch described in two-dimentional Noise Acquisition unit is received is arrived
In PLC；Laterally, longitudinal displacement sensor receives signal, is input in PLC by analog/digital converter (D/A conversions)；
Computer sends movement instruction to PLC, after PLC receptions are instructed, output will be ordered horizontal to driving in servo-driver laterally, longitudinal
To, longitudinal direction two servomotors rotate；The rotation data of servomotor is through servo-driver, PLC feedback to the computer.
Described control unit realizes the motion control of servomotor, drives sensor array to be listed in motion in perpendicular,
Realization automatically controls the function of sensor array movement.
Described control unit can be demarcated to laser displacement sensor, be realized sensor array Aligning control, sensing
The operation of device array fixed point and sensor array list operation, specially：
1) measurement laser displacement sensor measures the distance of horizontally and vertically traversing guide range sensor, repeatedly measures it
After average, obtain running the umber of pulse that servomotor is sent to required for a certain distance, the preset value to system carries out school
Just, make up experimental provision be used for multiple times and environmental change caused by error.Program flow diagram is as shown in Figure 7.
2) sensor array runs to the origin position of system.Regulation is laterally X-axis, and longitudinal direction is Y-axis, using X, Y-axis point
The mode of operation of other Aligning control.Program flow diagram is as shown in Figure 8.
3) specific X, the coordinate of Y-direction of the given measurement point of gauger, drive two motors, move to sensor array
Corresponding position.Program flow diagram is as shown in Figure 9.
4) the csv files with multiple measurement point X, Y-coordinate are imported in control software, each is extracted by operation interface
X, the Y-coordinate of point, controlled motor are rotated, and drive sensor array to move to corresponding position.Program flow diagram is as shown in Figure 10.
Above-mentioned specific implementation can by those skilled in the art on the premise of without departing substantially from the principle of the invention and objective with difference
Mode local directed complete set is carried out to it, protection scope of the present invention is defined and not by above-mentioned specific implementation institute by claims
Limit, each implementation in the range of it is by the constraint of the present invention.
Claims (7)
1. a kind of array scanning noise-measuring system, it is characterised in that including：Two-dimentional Noise Acquisition unit, driver element and control
Unit processed, wherein：Control unit sends control and requires according to the input of gauger to driver element, and driver element will according to control
Ask and convert and be processed into work order and send to two-dimentional Noise Acquisition unit, two-dimentional Noise Acquisition unit is listed in sensor array
The motion in whole perpendicular, the noise in the given perpendicular of measurement are realized under the driving of horizontal, vertical both direction motor
Information；
Described two-dimentional Noise Acquisition unit includes：Detection framework, the transverse sliding mechanism being slideably positioned in detection framework with
And the longitudinal sliding motion mechanism with sensor array on transverse sliding mechanism is arranged at, wherein：Sensor array is fixedly installed
In in longitudinal sliding motion mechanism and by laser sensing position realize accurate length travel.
2. array scanning noise-measuring system according to claim 1, it is characterized in that, described longitudinal sliding motion mechanism and horizontal stroke
Independent motor-driven guide block sliding track mechanism is to slide mechanism.
3. array scanning noise-measuring system according to claim 1, it is characterized in that, described sensor array is using more
Individual acoustic sensor composition in parallel.
4. array scanning noise-measuring system according to claim 3, it is characterized in that, the biography in described sensor array
Sensor is arranged using linear fashion.
5. array scanning noise-measuring system according to claim 1, it is characterized in that, described driver element includes：It is main
Control module, A/D modular converters, the two groups of laser displacements sensing being respectively arranged in longitudinal sliding motion mechanism and transverse sliding mechanism
Device, laser positioning plate and servo-driver, wherein：Main control module receives the control requirement from control unit, and control is single
The given object run value of unit is converted into pulse number and the direction of servomotor needs, and output services are instructed to longitudinal cunning respectively
Servo-driver on motivation structure and transverse sliding mechanism, A/D modular converters receive the analog voltage of two-dimentional Noise Acquisition unit
Signal simultaneously is converted into data signal and exports to main control module to be fed back to realize accurate position.
6. array scanning noise-measuring system according to claim 1, it is characterized in that, described control unit includes：It is multiple
Position module, transducer calibration module, single-point input operation module and list input operation module, wherein：Transducer calibration module
Demarcated by the distance that sensor run unit length needs, the umber of pulse information required for obtaining unit distance is simultaneously divided
Do not export to reseting module, single-point input operation module and list input operation module, reseting module sends multiple to driver element
The control requirement of position so that the position zero of the sensor array in two-dimentional Noise Acquisition unit；Single-point input operation module to
Driver element sends the control requirement of single coordinate movement so that the sensor array in two-dimentional Noise Acquisition unit reaches detection
Specified location in framework；List input operation module sends that multiple coordinates are moved so that two-dimentional Noise Acquisition to driver element
Sensor array in unit reaches several specified locations in detection framework according to the time sequencing of setting successively.
7. a kind of measuring method based on any of the above-described claim described device, it is characterised in that comprise the following steps：
The first step：Measured object is positioned in the opposed vertical plane of noise-measuring system and the selected survey for measuring object
Amount zero point, needs to select suitable measuring distance according to test；
Second step：The total power switch of measurement apparatus is opened, operation control unit carries out the Aligning control operation of X, Y-axis；
3rd step：Operation control unit, carries out laser sensor system proving operation；
4th step：Operation control unit, controls sensor array to run to aiming spot after input purpose point coordinates；
5th step：The position of object is readjusted, by the measurement zero point of object and the 4th nethermost acoustics of step sensor array
Sensor center position overlaps；
6th step：Selection single-point operating measurement or list are measured as needed, and control sensor array to run to first
Individual aiming spot；
7th step：Servomotor brakes, and carries out noise testing；
8th step：If the 6th step is selected but point measurement, the coordinate of next measurement point is input into, carries out the measurement of next impact point,
Until all impact points are measured and finished；If the 6th step selective listing operating measurement, it is not required to be input into next point coordinates, directly grasps
Run to subsequent point to measure to all impact point measurements and finish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710009960.8A CN106840374A (en) | 2017-01-06 | 2017-01-06 | Array scanning noise-measuring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710009960.8A CN106840374A (en) | 2017-01-06 | 2017-01-06 | Array scanning noise-measuring system |
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Cited By (6)
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| CN109163909A (en) * | 2018-10-16 | 2019-01-08 | 汽-大众汽车有限公司 | A kind of automobile engine nacelle noise detection apparatus |
| CN111504446A (en) * | 2020-04-03 | 2020-08-07 | 武汉理工大学 | Test system for surface sound intensity distribution on automatic scanning equipment |
| CN111721961A (en) * | 2019-03-21 | 2020-09-29 | 宝山钢铁股份有限公司 | Converter oxygen lance jet flow simulation detection system and detection method thereof |
| CN112414541A (en) * | 2020-11-09 | 2021-02-26 | 东风汽车集团有限公司 | Automatic vehicle exterior noise testing device and noise testing method |
| CN114517954A (en) * | 2022-03-30 | 2022-05-20 | 海信（山东）空调有限公司 | Air conditioner and control method for actively reducing noise of air conditioner |
| CN115219014A (en) * | 2022-07-12 | 2022-10-21 | 国网安徽省电力有限公司马鞍山供电公司 | Power transformer with noise monitoring mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163909A (en) * | 2018-10-16 | 2019-01-08 | 汽-大众汽车有限公司 | A kind of automobile engine nacelle noise detection apparatus |
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| CN112414541A (en) * | 2020-11-09 | 2021-02-26 | 东风汽车集团有限公司 | Automatic vehicle exterior noise testing device and noise testing method |
| CN114517954A (en) * | 2022-03-30 | 2022-05-20 | 海信（山东）空调有限公司 | Air conditioner and control method for actively reducing noise of air conditioner |
| CN115219014A (en) * | 2022-07-12 | 2022-10-21 | 国网安徽省电力有限公司马鞍山供电公司 | Power transformer with noise monitoring mechanism |
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