CN110026330A - The method of piston sounding device, probe correcting device and its calibration probe - Google Patents
The method of piston sounding device, probe correcting device and its calibration probe Download PDFInfo
- Publication number
- CN110026330A CN110026330A CN201910338580.8A CN201910338580A CN110026330A CN 110026330 A CN110026330 A CN 110026330A CN 201910338580 A CN201910338580 A CN 201910338580A CN 110026330 A CN110026330 A CN 110026330A
- Authority
- CN
- China
- Prior art keywords
- piston
- probe
- lever
- driving assembly
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
- B06B1/16—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
-
- 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
Abstract
The present invention provides a kind of method of piston sounding device, probe correcting device and its calibration probe, belongs to sound wave generation technique field.Piston sounding device includes controller, the cavity with port, the first driving assembly, the second driving assembly, lever, support rod and piston；Piston is set to the port of cavity with seal cavity, the both ends of lever are sequentially connected with piston and the first driving assembly respectively, one end of support rod is abutted with lever, the other end and the second driving assembly are sequentially connected, and controller is connect with the first driving assembly and the second driving assembly signal respectively；Simple harmonic motion is done along the abutment end of support rod in one end that first driving assembly activation lever is connect with the first driving assembly, and the other end of lever does simple harmonic oscillation along the axial direction of cavity with piston, and the second driving assembly driving support rod is moved along the extending direction of lever.
Description
Technical field
The present invention relates to sound wave generation technique fields, in particular to a kind of piston sounding device, probe correcting device
And its method of calibration probe.
Background technique
During acoustic investigation and application, it is often necessary to accurately be surveyed by acoustic measurement apparatus to sound wave
Amount.In current acoustic measurement apparatus, it can all be provided with microphone (the acoustic-electric conversion for sound pressure signal to be converted to electric signal
Device).In practical applications, in order to the electric signal accuracy with higher for exporting microphone conversion, all can not usually
Regularly microphone is calibrated.
During being calibrated to microphone, it usually needs produced using piston sounding device (or secondary generating device)
Raw given frequency and the acoustic pressure of amplitude are used for calibrating.Piston sounding device can be by the piston of reciprocating motion in cavity
The acoustic pressure in trigonometric function waveform is generated, that is, generates the low-frequency sound wave of certain frequency and amplitude.Using microphone to the acoustic pressure into
Row detection, by the parameter of contrasting detection signal and primary sound pressure, can calibrate microphone.
Current piston sounding device drives piston to do reciprocal fortune generally by shake table, electromagnetic exciter or cam
Dynamic, but the cost of manufacture of shake table and electromagnetic exciter is higher and difficult in maintenance, and the work of existing cam driving structure
Filling in sounding device, cost is relatively low, convenient for safeguarding, cannot but generate the acoustic pressure of various amplitude.
Summary of the invention
The purpose of the present invention is to provide a kind of piston sounding device, probe correcting device and its method popped one's head in is calibrated,
The piston sounding device advantage of lower cost, acoustic pressure convenient for safeguarding and can produce various amplitude.
The embodiment of the present invention is achieved in that
The one side of the embodiment of the present invention provides a kind of piston sounding device, comprising: controller, the cavity with port,
First driving assembly, the second driving assembly, lever, support rod and piston；Piston is set to the port of cavity with seal cavity,
The both ends of lever are sequentially connected with piston and the first driving assembly respectively, and one end of support rod abuts with lever, the other end and the
The transmission connection of two driving assemblies, controller are connect with the first driving assembly and the second driving assembly signal respectively；First driving group
Simple harmonic motion is done along the abutment end of support rod in one end that part activation lever is connect with the first driving assembly, and the other end of lever drives
Piston does simple harmonic oscillation along the axial direction of cavity, and the second driving assembly driving support rod is moved along the extending direction of lever.
Optionally, spring is arranged on piston, the port that the both ends of spring are connected to cavity respectively connects lever with piston
One end.
Optionally, the second driving assembly includes driving motor, lead screw and feed screw nut, and driving motor and lead screw transmission connect
It connects, feed screw nut is set on lead screw, and feed screw nut and support rod are connected far from one end of lever；Wherein, the extension of lead screw
The extending direction of direction and lever is parallel to each other, and driving motor is connect with controller signals.
Optionally, one end that support rod is abutted with lever is provided with fulcrum roller or fulcrum idler wheel, fulcrum roller or fulcrum
Idler wheel is rotatablely connected with support rod, and fulcrum roller or fulcrum idler wheel can roll on lever；Support rod includes the first spiral shell
Bar, the second screw rod and sleeve, one end of sleeve and the first screw rod are socketed, and the other end of sleeve and the second screw rod are socketed, fulcrum shaft
It holds or the one end of the second screw rod far from sleeve is arranged in fulcrum idler wheel.
Optionally, the first driving assembly includes rotating electric machine, cam and connecting rod, and rotating electric machine is connect with cam drive,
The connection of one end of lever and connecting rod, the other end of connecting rod are abutted with cam, wherein rotating electric machine and controller signals connect
It connects.
Optionally, the port of cavity includes tapered portion；Cavity is provided with solenoid valve, solenoid valve and control far from the side of port
Device signal connection processed.
The another aspect of the embodiment of the present invention provides a kind of probe correcting device, comprising: standard probe, tested probe peace
Fill the piston sounding device of mouth, processor and multiple above-mentioned any one；Standard probe and tested probe installing port setting exist
On the cavity of piston sounding device, standard probe is connect with processor, and tested probe installing port is connect for installing with processor
Tested probe.
Optionally, sound pressure amplitude calibrated scale ruler is provided on the lever of piston sounding device；Processor and piston sounding
The controller of device connects；Displacement sensor is provided on the piston of piston sounding device, displacement sensor is connect with processor,
Displacement for induction piston；The processor of piston sounding device includes computer and data collecting card, data collecting card with
It is connect respectively with computer, standard probe, tested probe and displacement sensor, computer is connect with controller.
Another aspect of the present invention provides a kind of method of probe correcting device calibration probe using any of the above-described,
It include: the detection data for receiving standard probe；Receive the detection data of tested probe；Compare standard probe detection data and by
The detection data of probing head；The measured value of tested probe is calibrated according to comparison result.
Another aspect of the invention provides a kind of using the above-mentioned probe correcting device including sound pressure amplitude calibrated scale ruler
The method for calibrating probe, comprising: receive the detection data of tested probe；Read the sound pressure amplitude mark that support rod corresponds on lever
Determine the numerical value of graduated scale；Compare the numerical value of sound pressure amplitude calibrated scale ruler and the detection data of tested probe；According to comparison result
The measured value of the tested probe of calibration.
The beneficial effect of the embodiment of the present invention includes:
A kind of piston sounding device provided in an embodiment of the present invention, including controller, cavity, the first driving assembly, second
Driving assembly, lever, support rod and piston.Wherein, controller respectively with the first driving assembly and the second driving assembly signal
Connection can control the first driving assembly activation lever by controller respectively and do simple harmonic motion, the second driving assembly driving branch
Strut is moved along the extending direction of lever.Piston is slidably disposed in cavity by the port of cavity.Due to the two of lever
End is sequentially connected with piston and the first driving assembly respectively, and therefore, piston can be under the driving of the first driving assembly in cavity
It is interior as simple harmonic oscillation is done in the end of lever.It is abutted with lever due to one end of support rod again, as the fulcrum of lever, by the
Two driving assemblies driving support rod is moved along the extending direction of lever, enables the fulcrum of lever in the driving of the second driving assembly
Lower movement, so that the amplitude for the end simple harmonic motion for connecting lever with piston changes with the variation of fulcrum, and then makes piston
Simple harmonic oscillation amplitude change with the variation of balance pivot.The piston of different Oscillation Amplitudes is able to drive in cavity in the cavity
The acoustic pressure of gas generation various amplitude.So the piston sounding device can change work by changing the position of the fulcrum of lever
The amplitude of simple harmonic oscillation is filled in, to generate the acoustic pressure of various amplitude in the cavity.Meanwhile by adjusting the driving of the first driving assembly
The frequency of the done simple harmonic motion of lever, thus it is possible to vary the frequency of piston simple harmonic oscillation, to generate the acoustic pressure of different frequency.Due to
The structure that the piston sounding device is combined using driving assembly and lever, and shake table or electromagnetic exciter are not used, therefore at
This is relatively low and convenient for safeguarding.
A kind of probe correcting device provided in an embodiment of the present invention, using above-mentioned piston sounding device, cost is relatively low, just
In the acoustic pressure that safeguards and can produce various amplitude and frequency.The probe correcting device can be popped one's head in and by probing by contrast standard
The data of head, it is more accurate that tested probe is calibrated.
A kind of method of probe correcting device calibration probe using any of the above-described provided by the invention, can be more smart
True calibrates tested probe.
Of the invention provides a kind of probe correcting device calibration probe using above-mentioned including sound pressure amplitude calibrated scale ruler
Method, more convenient tested probe can be calibrated.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is one of the structural schematic diagram of piston sounding device provided in an embodiment of the present invention；
Fig. 2 is the second structural representation of piston sounding device provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of probe correcting device provided in an embodiment of the present invention；
Fig. 4 is the method flow diagram of the calibration probe of probe correcting device provided in an embodiment of the present invention.
Icon: 110- controller；120- cavity；121- tapered portion；The first driving assembly of 130-；131- rotating electric machine；
132- cam；133- connecting rod；The second driving assembly of 140-；141- driving motor；142- lead screw；143- feed screw nut；150-
Lever；160- support rod；The first screw rod of 161-；The second screw rod of 162-；163- sleeve；170- piston；180- spring；190- electromagnetism
Valve；310- standard probe；The tested probe of 320-；330- processor；331- computer；332- data collecting card；340- displacement sense
Answer device.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do
Invention product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and cannot manage
Solution is indication or suggestion relative importance.
In addition, the terms such as term "horizontal", "vertical" are not offered as requiring component abswolute level or pendency, but can be slightly
Low dip.It is not to indicate that the structure has been had to if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
It is complete horizontal, but can be slightly tilted.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
The embodiment of the present invention provides a kind of piston sounding device, as shown in Figure 1, comprising: controller 110, cavity 120,
One driving assembly 130, the second driving assembly 140, lever 150, support rod 160 and piston 170；Piston 170 is set to cavity
120 port is sequentially connected with piston 170 and the first driving assembly 130 respectively with seal cavity 120, the both ends of lever 150, branch
One end of strut 160 abuts with lever 150, the transmission connection of the other end and the second driving assembly 140, and controller 110 is respectively with the
One driving assembly 130 is connected with 140 signal of the second driving assembly；First driving assembly, 130 activation lever 150 and the first driving group
Simple harmonic motion is done along the abutment end of support rod 160 in one end that part 130 connects, and the other end band piston 170 of lever 150 is along cavity
120 axial direction does simple harmonic oscillation, and the second driving assembly 140 driving support rod 160 is moved along the extending direction of lever 150.
In practical applications, the first driving assembly 130 for doing simple harmonic motion along fulcrum for activation lever 150, usually may be used
Linear motor or the crank mechanism etc. of simple harmonic oscillation can be done to be set as drive rod.For driving support rod 160 along lever 150
Mobile the second driving assembly 140 of extending direction, usually can be set to linear motor, cylinder or rotating electric machine and lead screw
Combining mechanism etc..
When the first driving assembly 130 and the second driving assembly 140 are disposed as linear motor, then support rod 160 and thick stick
Bar 150 connects (attached to be not shown in the figure) with the drive rod of corresponding linear motor respectively.
When the first driving assembly 130 is set as crank mechanism, which includes rotating electric machine, crank and connecting rod,
Crank is driven by rotating electric machine, passes through link transmission between the end and crank of lever 150.Under the driving of rotating electric machine,
Crank is rotated according to certain revolving speed, and the crank of rotation drives lever 150 to carry out simple harmonic motion (letter along fulcrum by connecting rod
Humorous swing).(attached to be not shown in the figure)
Certainly, in embodiments of the present invention, the first driving assembly 130 and the second driving assembly 140 may be arranged as it
His specific structure, herein with no restrictions, as long as the first driving assembly 130 can activation lever 150 along fulcrum do simple harmonic motion,
Two driving assemblies 140 can drive support rod 160 to move along the extending direction of lever 150.
It should be noted that first, those skilled in the art should know the done simple harmonic motion of above-mentioned lever 150 refers to
Lever 150 is to carry out reciprocally swinging as fulcrum at 160 abutting of support rod, and the curve of the displacement of the reciprocally swinging at any time is
Sinusoidal or cosine curve.
Second, those skilled in the art should know piston 170 and cavity 120 need to seal cooperation, in lever 150
The piston 170 that simple harmonic oscillation is done under drive could generate waveform stabilization and the high acoustic pressure of accuracy in cavity 120.
Third, generally for enabling the first driving assembly 130 and piston 170 to be smoothly driven with lever 150, lever
150 connection respectively with the first driving assembly 130 and piston 170 is set as hinged.Certainly, in practical applications, above-mentioned connection
Other modes can also be selected.
A kind of piston sounding device provided in an embodiment of the present invention, including controller 110, cavity 120, the first driving assembly
130, the second driving assembly 140, lever 150, support rod 160 and piston 170.Wherein, controller 110 drives with first respectively
Component 130 is connected with 140 signal of the second driving assembly, can control the driving of the first driving assembly 130 respectively by controller 110
Lever 150 does simple harmonic motion, the second driving assembly 140 driving support rod 160 is moved along the extending direction of lever 150.Piston 170
It is slidably disposed in cavity 120 by the port of cavity 120.Due to lever 150 both ends respectively with piston 170 and first
Driving assembly 130 be sequentially connected, therefore, piston 170 can under the driving of the first driving assembly 130 in cavity 120 with
Do simple harmonic oscillation in the end of lever 150.It is abutted with lever 150 due to one end of support rod 160 again, as the fulcrum of lever 150,
It drives support rod 160 to move along the extending direction of lever 150 by the second driving assembly 140, the fulcrum of lever 150 is enable to exist
Moved under the driving of second driving assembly 140, thus the amplitude for the end simple harmonic motion for connecting lever 150 with piston 170 with
The variation of fulcrum and change, and then change the simple harmonic oscillation amplitude of piston 170 with the variation of 150 fulcrum of lever.Difference vibration
The piston 170 of dynamic amplitude is able to drive the acoustic pressure that gas in cavity 120 generates various amplitude in cavity 120.So the piston
Sounding device can change the amplitude of 170 simple harmonic oscillation of piston by changing the position of the fulcrum of lever 150, thus in cavity
The acoustic pressure of various amplitude is generated in 120.Meanwhile by adjusting the done simple harmonic motion of 130 activation lever of the first driving assembly 150
Frequency, thus it is possible to vary the frequency of 170 simple harmonic oscillation of piston, to generate the acoustic pressure of different frequency.Due to the piston sounding device
The structure combined using driving assembly and lever 150, and shake table or electromagnetic exciter are not used, therefore advantage of lower cost,
And it is convenient for safeguarding.
Optionally, as shown in Figure 1, being arranged with spring 180 on piston 170, the both ends of spring 180 are connected to cavity respectively
120 port and piston 170 connect one end of lever 150.
Generally for spring 180 can be made preferably to be connected to one end that piston 170 connects lever 150, can set here
The structures such as end cap are equipped with, provide the abutting part for abutting for spring 180.Certainly, can not also increase in embodiments of the present invention
It adds and sets abutting part.
The sheathed spring 180 on piston 170, by the spring 180 can auxiliary piston 170 under the drive of lever 150
Do simple harmonic oscillation, while lever 150 can be made during the work time by the elastic force of the spring 180, keep with support rod 160 it
Between close abutting, thus improve the piston sounding device work stability and precision.
Optionally, as shown in Figure 1, the second driving assembly 140 includes driving motor 141, lead screw 142 and feed screw nut
143, driving motor 141 and lead screw 142 are sequentially connected, and feed screw nut 143 is set on lead screw 142, and feed screw nut 143 and branch
Strut 160 is connected far from one end of lever 150；Wherein, the extending direction of the extending direction of lead screw 142 and lever 150 is mutually flat
Row, driving motor 141 are connect with 110 signal of controller.
In second driving assembly, 140 course of work, driving motor 141 drives lead screw 142 to be rotated, to make lead screw
Nut 143 can the extending direction on lead screw 142 along lead screw 142 move, and then drive the branch that is connected on feed screw nut 143
Strut 160 is mobile, and the position for abutting support rod 160 with lever 150 moves (i.e. lever 150 along the extending direction of lever 150
Fulcrum is moved along the extending direction of lever 150).
It should be noted that above-mentioned driving motor 141 is in practical applications, those skilled in the art can be according to specific work
Condition or design parameter are selected.For example, selecting rotating electric machine etc..
The structure that driving motor 141 is combined with lead screw 142 is set by the first driving assembly 130, cost is relatively low, and structure
It is simple convenient for safeguarding.Lead screw 142 and the cooperation precision of feed screw nut 143 are relatively high, therefore change lever 150 with this configuration
Fulcrum, precision is higher, can be improved the precision of the piston sounding device.
Optionally, as shown in Figure 1, one end that support rod 160 is abutted with lever 150 is provided with fulcrum roller or fulcrum idler wheel
(not marking in Fig. 1), fulcrum roller or fulcrum idler wheel are rotatablely connected with support rod 160, and fulcrum roller or fulcrum idler wheel are equal
It can be rolled on lever 150.
Spring bearing or fulcrum idler wheel are set in one end that support rod 160 is abutted with lever 150, pass through spring bearing or branch
Point idler wheel is abutted with lever 150, is reduced support rod 160 using the rolling of spring bearing or fulcrum idler wheel on lever 150 and is moved
Resistance when dynamic is influenced when reducing the movement of 150 position of the fulcrum of lever by resistance, to improve the shifting of 150 position of the fulcrum of lever
Dynamic precision, and then improve the precision of the piston sounding device.
Optionally, as shown in Fig. 2, support rod 160 includes the first screw rod 161, the second screw rod 162 and sleeve 163, sleeve
163 one end and the first screw rod 161 are socketed, and the other end of sleeve 163 and the second screw rod 162 are socketed, and the second screw rod 162 is far from set
One end of cylinder 163 is provided with fulcrum roller or fulcrum idler wheel.
It sets support rod 160 to the mode of the first screw rod 161, the second screw rod 162 and sleeve 163, adjusting can be passed through
Rotational sleeve 163, enable the first screw rod 161 for being connected to 163 both ends of sleeve and the second screw rod 162 towards or away from from shifting
It is dynamic, to change the integrally-built length of support rod 160, keep the abutting between support rod 160 and lever 150 releasable or add
By force.Length by adjusting support rod 160 discharges the abutting between support rod 160 and lever 150, can be avoided in the piston
When sounding device stops working, spring 180 is pressurized for a long time and fails.Certainly, in practical applications, to make support rod 160
Length is adjustable, and support rod 160 may be arranged as other retractable structures, for example, being set as telescopic rod etc..
Optionally, as shown in Figure 1, the first driving assembly 130 includes rotating electric machine 131, cam 132 and connecting rod 133, rotation
Rotating motor 131 and cam 132 are sequentially connected, and one end of connecting rod 133 is connect with lever 150, the other end of connecting rod 133 with it is convex
The profile of wheel 132 abuts, wherein rotating electric machine 131 is connect with 110 signal of controller.
It should be noted that first, the contour curve of usual cam 132 is set as sinusoidal acceleration type, i.e. cam 132 is set
It is set to sinusoidal acceleration cam 132.
Second, generally for keeping the transmission between connecting rod 133 and cam 132 more smooth, connecting rod 133 and cam
The components such as idler wheel are provided at 132 abuttings.It is also provided at the abutting of connecting rod 133 and cam 132 and hangs down with connecting rod 133
Straight plate, being connected on cam 132 by the plate can also make the transmission between cam 132 and connecting rod 133 more smooth.
Set the first driving assembly 130 to include rotating electric machine 131, cam 132 and connecting rod 133 structure, structure
Simply, cost is relatively low and convenient for safeguarding, and then can reduce the cost of the piston sounding device.
Optionally, 170 peripheral envelope of piston is equipped with sealing ring (attached to be not shown in the figure).
It is arranged sealing ring in 170 periphery of piston, makes there can be better sealing between piston 170 and cavity 120.Together
When in order to reduce piston 170 during the motion with cavity 120 directly contact generation abrasion, can also be in the week of the piston 170
Edge is arranged guide ring (attached to be not shown in the figure), directly contacts to avoid piston 170 with cavity 120.
Optionally, as shown in Figure 1, the port of cavity 120 includes tapered portion 121.
The port for making cavity 120 includes tapered portion 121, gas can be driven to generate to avoid the piston 170 being located at port
Acoustic pressure to far from piston 170 direction advance when, there is vortex in acoustic pressure air-flow, caused by the non-well-balanced property error of acoustic pressure.
Optionally, as shown in Figure 1, cavity 120 is provided with solenoid valve 190, solenoid valve 190 and control far from the side of port
The connection of 110 signal of device.
Since in use, the gas in cavity 120 can continue and reveal on a small quantity at any time, therefore can pass through
The mode of solenoid valve 190 is set on wall, solenoid valve 190 is opened when needing to 120 make-up gas of cavity and balances cavity 120
Interior and extraneous air pressure.In practical applications, those skilled in the art can also voluntarily select according to operating condition and design conditions
Select the installation site of solenoid valve 190.
The another aspect of the embodiment of the present invention provides a kind of probe correcting device, as shown in Figure 3, comprising: standard probe
310, it is tested the piston sounding device of probe installing port, processor 330 and multiple above-mentioned any one；310 He of standard probe
Tested probe installing port is arranged on the cavity 120 of piston sounding device, and standard probe 310 is connect with processor 330, by probing
Head installing port is for installing the tested probe 320 connecting with processor 330.
It should be noted that first, since the acoustic pressure air-flow generated in cavity 120 is relatively uniform at the middle part of cavity 120,
Therefore standard probe 310 and tested probe installing port can be oppositely arranged on to the middle part of cavity 120.Certainly, herein to standard
With no restrictions, those skilled in the art can according to circumstances voluntarily for the specific setting position of probe 310 and tested probe installing port
Setting.
Second, above-mentioned standard probe 310 is used to the waveform parameter etc. of acoustic pressure in test chamber 120 with tested probe 320,
Sound pressure signal is converted into electric signal.Standard probe 310 and tested probe 320 can be standard microphone respectively and be tested transaudient
Device is also possible to other probes that sound pressure signal can be converted to electric signal.
A kind of probe correcting device provided in an embodiment of the present invention, using above-mentioned piston sounding device, cost is relatively low, just
In the acoustic pressure that safeguards and can produce various amplitude and frequency.The probe correcting device can pass through contrast standard probe 310 and quilt
The data of probing head 320, it is more accurate that tested probe 320 is calibrated.
Optionally, it is provided on the lever 150 of piston sounding device sound pressure amplitude calibrated scale (being not shown in 3 in figure).
Sound pressure amplitude calibrated scale corresponds to the position of the fulcrum on corresponding lever 150, due to the position of the fulcrum of lever 150
Difference, amplitude of the corresponding lever 150 with the done simple harmonic oscillation of piston 170 can be different, therefore by carrying out to position of the fulcrum
Amplitude calibration, can determine the amplitude of 170 simple harmonic oscillation of piston by the scale of calibration.Vibration is determined by identification calibrated scale
Width, tested probe 320 can be calibrated by comparing the amplitude.
Optionally, as shown in figure 3, processor 330 is connect with the controller 110 of piston sounding device.
Processor 330 is connect with controller 110, enable processor 330 according to the data of processing to controller 110 from
It is dynamic to issue instruction, to control automatically above-mentioned piston sounding device.
Optionally, as shown in figure 3, being provided with displacement sensor 340 on the piston 170 of piston sounding device, displacement induction
Device 340 is connect with processor 330, the change in displacement for induction piston 170.
Since the sound pressure variations that the variation of 170 simple harmonic oscillation of piston is generated with it are positively correlated, pass through the position of setting
The change in displacement for moving 340 induction piston 170 of inductor, to calculate theoretical acoustic pressure parameter according to the change in displacement, then compares
The theoretical parameter and the surveyed parameter of standard probe 310 judge that the acoustic pressure generated in cavity 120 whether there is because the reasons such as gas leakage are made
At error.Error if it exists, then can be by control solenoid valve 190 etc. modes to carrying out air pressure balance in cavity 120.
Optionally, as shown in figure 3, the processor 330 of piston sounding device includes computer 331 and data collecting card 332,
Data collecting card 332 with connect respectively with computer 331, standard probe 310, tested probe 320 and displacement sensor 340,
Computer 331 is connect with controller 110.
Processor 330 includes computer 331 and data collecting card 332, can be to standard probe by data collecting card 332
310, the data for being tested probe 320 and displacement sensor 340 carry out high speed acquisition.Computer 331 and data collecting card 332 connect
It connects, the data that data collecting card 332 acquires can be imported into computer 331, and computer 331 can be by software to importing
Data are processed and displayed.Wherein, the parameter that computer 331 is shown may include that standard probe 310 and tested probe 320 are surveyed
The acoustic pressure waveform of amount, amplitude, frequency etc..Can also include displacement sensor 170 displacement variable of piston and by should
The theoretical acoustic pressure parameter etc. that variable quantity is calculated.Certainly, in practical application, the parameter that computer 331 is shown includes but unlimited
It is enumerated in above-mentioned, can also include parameter needed for other skilled in the art.
Another aspect of the present invention provides a kind of method of probe correcting device calibration probe using any of the above-described,
As shown in connection with fig. 4, comprising:
Step 210: receiving the detection data of standard probe 310.
Step 220: receiving the detection data of tested probe 320.
Step 230: comparing the detection data of standard probe 310 and the detection data of tested probe 320.
Step 240: the measured value of tested probe 320 is calibrated according to comparison result.
Above-mentioned probe correcting device apply the calibration probe method, can it is more accurate to it is tested probe 320 into
Row calibration.
By comparing the data of standard probe 310 and the data of tested probe 320, using the comparison result to tested probe
320 are calibrated, and calibration accuracy is higher.
Another aspect of the invention provides a kind of using the above-mentioned probe correcting device including sound pressure amplitude calibrated scale ruler
The method for calibrating probe, as shown in connection with fig. 4, comprising:
Step 250: receiving the detection data of tested probe 320.
Step 260: reading the numerical value for the sound pressure amplitude calibrated scale ruler that support rod 160 corresponds on lever 150.
Step 270: comparing the numerical value of sound pressure amplitude calibrated scale ruler and the detection data of tested probe 320.
Step 280: the measured value of tested probe 320 is calibrated according to comparison result.
By comparing the data of calibrated scale and tested probe 320, due to not needing to acquire and handle standard probe 310
Data, therefore, the calibrating mode data processing are simple, convenient and efficient to the calibration of tested probe 320.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of piston sounding device characterized by comprising controller, the cavity with port, the first driving assembly,
Two driving assemblies, lever, support rod and piston；The piston is set to the port of the cavity to seal the cavity, institute
The both ends of lever are stated to be sequentially connected with piston and the first driving assembly respectively, one end of the support rod abuts with the lever,
The other end and second driving assembly are sequentially connected, and the controller drives with first driving assembly and described second respectively
Dynamic component signals connection；One end that first driving assembly drives the lever to connect with first driving assembly is along described
The abutment end of support rod does simple harmonic motion, and axial direction of the other end of the lever with piston along the cavity does simple harmonic oscillation,
Second driving assembly drives the support rod to move along the extending direction of the lever.
2. piston sounding device as described in claim 1, which is characterized in that be arranged with spring, the spring on the piston
Both ends be connected to the port of the cavity respectively and connect one end of the lever with the piston.
3. piston sounding device as described in claim 1, which is characterized in that second driving assembly include driving motor,
Lead screw and feed screw nut, the driving motor are connect with the lead screw transmission, and the feed screw nut is set on the lead screw,
And the feed screw nut is connect with the support rod far from one end of the lever；Wherein, the extending direction of the lead screw and institute
The extending direction for stating lever is parallel to each other, and the driving motor is connected with the controller in a signal way..
4. piston sounding device as described in any one of claims 1 to 3, which is characterized in that the support rod and the lever
One end of abutting is provided with fulcrum roller or fulcrum idler wheel, and the fulcrum roller or the fulcrum idler wheel and the support rod rotate
Connection, and the fulcrum roller or the fulcrum idler wheel can roll on the lever；The support rod include the first screw rod,
Second screw rod and sleeve, one end of the sleeve and first screw rod are socketed, the other end of the sleeve and second spiral shell
Rod set connects, and the described one end of second screw rod far from the sleeve is arranged in the fulcrum roller or the fulcrum idler wheel.
5. piston sounding device as described in claim 1, which is characterized in that first driving assembly include rotating electric machine,
Cam and connecting rod, the rotating electric machine are connect with the cam drive, and the lever is connect with one end of the connecting rod, institute
The other end for stating connecting rod is abutted with the cam, and the rotating electric machine is connected with the controller in a signal way..
6. piston sounding device as described in claim 1, which is characterized in that the port of the cavity includes tapered portion；It is described
Cavity is provided with solenoid valve far from the side of port, and the solenoid valve is connected with the controller in a signal way..
7. a kind of probe correcting device characterized by comprising standard probe, tested probe installing port, processor and such as power
Benefit requires any one of 1 to 6 piston sounding device；The standard probe and the tested probe installing port are arranged in the piston
On the cavity of sounding device, the standard probe is connected to the processor, and the tested probe installing port is for installation and institute
State the tested probe of processor connection.
8. probe correcting device as claimed in claim 7, which is characterized in that be provided on the lever of the piston sounding device
Sound pressure amplitude calibrated scale ruler；The processor is connect with the controller of the piston sounding device；The piston sounding device
Piston on be provided with displacement sensor, the displacement sensor is connected to the processor, for incuding the position of the piston
Shifting amount；The processor of the piston sounding device includes computer and data collecting card, the data collecting card with respectively with institute
State computer, the standard probe, the tested probe and displacement sensor connection, the computer and the control
Device connection.
9. a kind of method using probe correcting device as claimed in claim 7 or 8 calibration probe characterized by comprising
Receive the detection data of the standard probe；
Receive the detection data of the tested probe；
Compare the detection data of the standard probe and the detection data of the tested probe；
The measured value of the tested probe is calibrated according to comparison result.
10. a kind of method using probe correcting device as claimed in claim 8 calibration probe characterized by comprising
Receive the detection data of the tested probe；
Read the numerical value for the sound pressure amplitude calibrated scale ruler that support rod corresponds on lever；
Compare the numerical value of the sound pressure amplitude calibrated scale ruler and the detection data of the tested probe；
The measured value of the tested probe is calibrated according to comparison result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910338580.8A CN110026330B (en) | 2019-04-25 | 2019-04-25 | Piston sounding device, probe calibration device and method for calibrating probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910338580.8A CN110026330B (en) | 2019-04-25 | 2019-04-25 | Piston sounding device, probe calibration device and method for calibrating probe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110026330A true CN110026330A (en) | 2019-07-19 |
| CN110026330B CN110026330B (en) | 2020-12-11 |
Family
ID=67240232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910338580.8A Active CN110026330B (en) | 2019-04-25 | 2019-04-25 | Piston sounding device, probe calibration device and method for calibrating probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110026330B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111289095A (en) * | 2020-02-24 | 2020-06-16 | 南京俏声波动科技有限公司 | Sine pressure wave standard source for sensor calibration and working method thereof |
| CN114146891A (en) * | 2021-11-11 | 2022-03-08 | 苏州赫米兹健康科技有限公司 | Miniature infrasonic wave generator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871810A (en) * | 2010-06-28 | 2010-10-27 | 四川宁江山川机械有限责任公司 | Shock absorber noise detection device and method |
| WO2016183707A1 (en) * | 2015-05-15 | 2016-11-24 | Acm Research (Shanghai) Inc. | Methods and apparatus for cleaning semiconductor wafers |
| CN106921928A (en) * | 2017-04-06 | 2017-07-04 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Measurement, calibration method and device to microphone |
| CN108115755A (en) * | 2018-01-05 | 2018-06-05 | 南京工程学院 | A kind of mechanical torsional oscillation platform based on lever and cam mechanism |
| CN109013258A (en) * | 2018-07-10 | 2018-12-18 | 山东理工大学 | A kind of low-frequency sound pressure generating device |
-
2019
- 2019-04-25 CN CN201910338580.8A patent/CN110026330B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871810A (en) * | 2010-06-28 | 2010-10-27 | 四川宁江山川机械有限责任公司 | Shock absorber noise detection device and method |
| WO2016183707A1 (en) * | 2015-05-15 | 2016-11-24 | Acm Research (Shanghai) Inc. | Methods and apparatus for cleaning semiconductor wafers |
| CN106921928A (en) * | 2017-04-06 | 2017-07-04 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Measurement, calibration method and device to microphone |
| CN108115755A (en) * | 2018-01-05 | 2018-06-05 | 南京工程学院 | A kind of mechanical torsional oscillation platform based on lever and cam mechanism |
| CN109013258A (en) * | 2018-07-10 | 2018-12-18 | 山东理工大学 | A kind of low-frequency sound pressure generating device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111289095A (en) * | 2020-02-24 | 2020-06-16 | 南京俏声波动科技有限公司 | Sine pressure wave standard source for sensor calibration and working method thereof |
| CN111289095B (en) * | 2020-02-24 | 2023-11-03 | 南京俏声波动科技有限公司 | Sinusoidal pressure wave standard source for sensor calibration and working method thereof |
| CN114146891A (en) * | 2021-11-11 | 2022-03-08 | 苏州赫米兹健康科技有限公司 | Miniature infrasonic wave generator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110026330B (en) | 2020-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100453970C (en) | Method of error compensation in a coordinate measuring machine with an articulating probe head | |
| US9261446B2 (en) | Rotational viscometer | |
| JP2002202244A (en) | Experimental device for minute frictional wear | |
| CN109813226B (en) | A kind of three-dimensional shape measuring apparatus | |
| CN102538652B (en) | Calibrating device for eddy sensor | |
| CN110026330A (en) | The method of piston sounding device, probe correcting device and its calibration probe | |
| CN106839968B (en) | Rotor space axis of bending test macro and its test method | |
| CN106052983A (en) | Elastic coupling dynamic and static torsion rigidity simple testing device and method | |
| CN110763110B (en) | Three-jaw internal diameter ruler automatic calibration device | |
| EP2280264B1 (en) | Standard exciter | |
| CN109632252A (en) | The vibration angle displacement measuring device and method of outer formula forced vibration dynamic derivative test | |
| EA032037B1 (en) | Apparatus and method for constant shear rate and oscillatory rheology measurements | |
| CN102121816A (en) | Horizontal roundness and cylindricity automatic-measuring device | |
| CN103575933B (en) | Vibration type engine speed measuring instrument calibrating installation and method | |
| CN106644422A (en) | Tester for turbine test | |
| CN110500956B (en) | Standard circle track generating device | |
| US4763512A (en) | Rheometer | |
| CN206074254U (en) | A kind of device for testing dynamic stiffness of ball-screw | |
| CN109916276A (en) | The concentric measuring instrument of high pressure rotor inner hole | |
| CN107498389A (en) | A kind of positioning accuracy detection device of Digit Control Machine Tool rotary shaft | |
| CN114838650B (en) | Displacement sensor calibration device and method based on turntable | |
| CN106989853B (en) | A kind of micro- torque tester | |
| CN209069497U (en) | A kind of calibrating installation of aeroengine thrust measurement test bay | |
| Jimenez et al. | A novel computerized viscometer/rheometer | |
| CN1330959C (en) | Method for measuring dynamic bending moment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |