CN110350668A - It is a kind of to realize while the inductive power supply device and rotating speed measurement method of tachometric survey - Google Patents
It is a kind of to realize while the inductive power supply device and rotating speed measurement method of tachometric survey Download PDFInfo
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- CN110350668A CN110350668A CN201910615649.7A CN201910615649A CN110350668A CN 110350668 A CN110350668 A CN 110350668A CN 201910615649 A CN201910615649 A CN 201910615649A CN 110350668 A CN110350668 A CN 110350668A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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- Computer Networks & Wireless Communication (AREA)
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Abstract
It is realized while the inductive power supply device and rotating speed measurement method of tachometric survey the present invention provides a kind of, device includes inversion unit, transmitting coil, receiving coil, AC-DC rectification module and tach signal extraction module, wherein the transmitting coil is a square coil, the tach signal extraction module and the AC-DC rectification module are electrically connected, with the induced voltage that AC-DC rectification module is exported described in extraction and analysis, the tach signal extraction module, which extracts analysis to the induced voltage and refers to, successively carries out envelope detection to the induced voltage, sluggishness is relatively, signal condition, obtain the square wave of reflection induced voltage vibration frequency.The present invention can measure shaft revolving speed without installing additional speed probe while effectively solving the supply of different diameter of axle metal rotating shaft power supply wireless simultaneously, and overall structure is simple, easy for installation, provide a kind of effective ways for shafting power on-line monitoring.
Description
Technical field
The present invention relates to inductive power supply technical fields, and in particular, to a kind of to realize while the inductive power supply of tachometric survey
Device and application inductive power supply device progress shaft rotating speed measurement method.
Background technique
Inductive power supply technology with it conveniently, safely, environmental protection the features such as, more and more weighed in many industrial applications
Depending on.The technology is related to the aspects of contents such as power electronic technique, magnetic coupling technology, Theory of Automatic Control, modulating and demodulating signal.
In recent years, inductive power supply became the important power supply mode of rotating device measuring system, while to inductive power supply structure new function
Exploring is also the direction studied at present.
Transmitting coil and receiving coil are separated from each other in inductive coupling radio energy transmission system, and centre is between air
Gap, the coupling of two coils belong to loosely coupled architecture, can there is biggish leakage inductance, the coupling of system between transmitting coil and receiving coil
It is much lower compared with for traditional unity couping structure to close COEFFICIENT K.In order to improve energy transmission density and efficiency, inductive power supply system
Generally use dozens to hundreds of kHz ac-excited source, while the secondary edge system of the primary side system and receiving end to transmitting terminal into
The compensation of row serial or parallel connection capacitor resonance.In traditional power supply system, by the way of the coiling receiving coil on shaft circumference,
Need to recalculate the parameters such as receiving coil the number of turns, inductance for various sizes of shaft, and coiling receiving coil at the scene.It is existing
It will appear manual coiling difference when the coiling of field, have centainly not even for the shaft coiling receiving coil Shi Douhui of same size
Together, scene is needed to be adjusted parameter again.
It is found through retrieval, Chinese Patent Application No. 201810952824.7, is applicable in the different diameters of axle it discloses one kind and turns
The plane-parallel type coil device of axis wireless induction power supply, which is characterized in that including transmitting coil, receiving coil and flexible magnetic conduction
Piece；Transmitting coil and receiving coil face；Transmitting coil is by a pair of completely identical in structure emission component circle structure being connected in parallel
At two emission component circles are fixed after being pasted on flexible magnetic conduction sheet；Receiving coil receives subcoil parallel connection group by multiple groups
At receiving coil array, shaft surface is pasted by the isolation of flexible magnetic conduction sheet, is rotated with shaft, so that in shaft rotary course
The coefficient of coup of transmitting coil and receiving coil is kept to stablize.
The structure transmitting coil is made of the coil of two constant spacings, and installation production is more demanding.The structure is for supplying
The laterally offset of electric system does not have resistance, when laterally offset occurs system be likely to can not normal power supply, the mechanical vibration of system
Dynamic resistance is weak.At the same time although two coil configuration may be implemented stable power supply, but the voltage magnitude that receiving end receives
Fluctuate it is larger, receiving end realize AC-DC switching process in energy loss it is larger, receiving end rectifying device generate heat more serious, shadow
The acoustic system service life, it is possible to because fever damage causes safety accident.
Summary of the invention
For the defects in the prior art, it is realized while the inductive power supply of tachometric survey the object of the present invention is to provide a kind of
Device and rotating speed measurement method, by transmitting coil and based on standard block coil electricity between the receiving coil constituted in parallel
Magnetic coupling relation realizes stable inductive power supply, while according to induced voltage by between the transmitting coil and the receiving coil
At equal intervals amplitude cyclically-varying caused by even variation and obtain shaft revolving speed.
To achieve the above object, the invention adopts the following technical scheme:
According to the first aspect of the invention, provide it is a kind of realize while the inductive power supply device of tachometric survey, including inversion
Unit, transmitting coil, receiving coil, AC-DC rectification module and tach signal extraction module, described in transmitting coil connection
Inversion unit, and the transmitting coil and the receiving coil electromagnetic coupling, the output end of the receiving coil and the AC-DC
The input terminal of rectification module connects, and the AC-DC rectification module output induced current realizes inductive power supply；Wherein:
The transmitting coil is a square coil, and the square coil is pasted on the first flexible magnetic conduction sheet, passes through tune
The length of the whole square coil obtains stable power supply and is easy to the rotary speed information that the tach signal extraction module extracts；It is logical
Cross adjust the square coil width make inductive power supply device have high lateral shake resistance, laterally shaken in non-controllable property
When reduce induced voltage amplitude of variation.
The receiving coil forms coil array by multiple standard block coils from parallel connection of coils, and the coil array passes through the
Two flexible magnetic conduction sheet isolation are pasted onto the surface of testee.Testee can be metal object and be also possible to nonmetal object
Body improves the adaptability of metal object by flexible magnetic conduction sheet.
The present invention can realize stable power-supplying and can use single coil structure by unicoil (transmitting coil)
Voltage fluctuation feature measuring rotating speed.
Preferably, the size of the transmitting coil and the size of the standard block coil are closed in a certain proportion of direct ratio
System.
Preferably, the described first flexible magnetic conduction sheet is using the permalloy film that resistivity is big, magnetic property is good, as magnetic conduction
And shielding material, the coupling efficiency of inductive power supply system can be effectively improved, metal swirl is overcome to influence.
Preferably, the length of the transmitting coil is not less than the length of twice of standard block coil.By increasing the hair
The stability of power supply can be improved in the length of ray circle, reduces system power dissipation, but can reduce induced voltage fluctuating range, increases and turns
Fast information extraction difficulty.It is relatively stable that the usual transmitting coil length is that 3-5 times of the standard block coil can obtain
Power supply and the rotary speed information that easily extracts.The width of the transmitting coil is the 1.2-1.4 times of standard block coil width, is made
Power supply speed measuring device has higher lateral shake resistance, when non-controllable property is laterally shaken, reduces induced voltage amplitude of variation, mentions
The accuracy of high tachometric survey.The standard block coil can use rectangle or ellipse.For example, in a specific preferred embodiment
In, the transmitting coil length is 3 times of the standard block coil length, and the width of the transmitting coil is the standard list
1.4 times of first coil width.
Preferably, the tach signal extraction module and the AC-DC rectification module are electrically connected, described in extraction and analysis
The induced voltage that AC-DC rectification module is exported, the tach signal extraction module extract analysis to the induced voltage
Refer to and successively carry out envelope detection, sluggish comparison, signal condition to the induced voltage, obtains reflection induced voltage vibration frequency
Square wave.
Preferably, the described second flexible magnetic conduction sheet preferably uses permalloy film, as magnetic conduction and shielding material, can have
Effect improves the coupling efficiency of inductive power supply system, and metal swirl is overcome to influence.
Preferably, spacer is set between the described second flexible magnetic conduction sheet and testee, it may be assumed that the flexibility magnetic conduction sheet
A surface and the standard block coil paste, another side surface is provided with spacer, the another side of spacer be pasted by
(such as shaft) is surveyed on body surface.The spacer preferably uses Amorphous Alloy Film, further increases isolation effect.
According to the second aspect of the invention, a kind of shaft tachometric survey of rotation-speed measuring device using inductive power supply is provided
Method includes the following steps:
S1 determines the quantity of standard block coil according to the diameter of axle of shaft, determines institute according to the size of standard block coil
State the size of transmitting coil；
S2 is fixed on the second flexible magnetic conduction sheet by several standard block coils from parallel connection of coils and by the shaft circumferential array
On, several standard block coils are fixed in the shaft by the described second flexible magnetic conduction sheet, constitute receiving coil；
Further, spacer can be set between the flexible magnetic conduction sheet and the shaft；
Transmitting coil is fixedly installed in the side of the receiving coil in S3, the transmitting coil and the receiving coil it
Between spacing both be satisfied with the requirement for forming electromagnetic coupling；The transmitting coil is pasted onto the first flexible magnetic conduction by square coil
On piece is constituted；
S4, when the shaft rotation when, the transmitting coil is motivated by inverter, the transmitting coil with
Even variation at equal intervals between the receiving coil, the receiving coil export induced voltage to AC-DC rectification module, and described turn
Fast signal extraction module extract the induced voltage with according to the induced voltage by the transmitting coil and the receiving coil
Between at equal intervals amplitude cyclically-varying caused by even variation and obtain shaft revolving speed.
Preferably, so that the tach signal extraction module is carried out envelope detection to the induced voltage, extract the induction
The amplitude cyclically-varying waveform of voltage, removal wherein DC component and amplify, it is sluggish relatively and signal condition, obtain anti-
The square wave of the induced voltage vibration frequency is reflected, the shaft revolving speed is calculated with following formula:
In formula, V is the shaft revolving speed, and f is the vibration frequency of the induced voltage, i.e., the institute after signal condition
The frequency of square wave is stated, N is the number of one week standard block coil of the shaft.
Preferably, the transmitting coil and the receiving coil are vertically opposite, and vertical range between the two is at several millimeters
Between several centimeters.
Preferably, the quantity of the standard block coil is to surround the shaft one week as reference, the standard block line
Mutually it is close to arrangement according to its size between circle or mutually waits gaps arrangement, meets the requirement by the shaft circumferential array.
The measurement method of revolving speed is according to the metal rotating shaft transmitting in rotation, receiving coil relative position in the present invention
Constantly variation, there are induced voltage fluctuation during variation, the waveform frequency carried out after envelope detection to induced voltage is
The changed frequency in relative position, and then can reflect out the frequency of shaft rotation.Above-mentioned apparatus of the present invention is suitable for difference
Diameter of axle shaft, structure size be unified, it is low to installation personnel technical requirements, facilitate site installation test and there is high coupling efficiency,
It can measure shaft rotary speed parameter without external speed probe simultaneously.
Compared with prior art, the present invention have it is following at least one the utility model has the advantages that
1) the present invention provides be the wireless induction power planes battle array that can measure shaft revolving speed without external speed probe
Alignment coil apparatus and rotating speed measurement method extract the rotary speed information of shaft from controllable induced voltage amplitude fluctuations, are shafting
Power on-line monitoring provides a kind of effective ways.
2) the relatively stable coefficient of coup of the holding transmitting coil in shaft rotary course and receiving coil of the invention, overcomes
Metal swirl influences the power supply of realization system stability and high efficiency.
3) present invention can adapt to different diameter of axle shafts simultaneously, and structure size is unified, and overall structure is simple, installation and debugging side
Just.
4) it can receive voltage induction more in the prior art by receiving-end voltage undulated control within 10%-5% and supply
It fluctuates smaller for electric installation, considers heat dissipation factor without excessive, so that the rectifying device service life extends, the safety of receiving end is obtained
To guarantee.
5) transmitting coil takes unicoil, and structure is simple, easy for installation, has very strong robust for mechanical oscillation or offset
Property, design cost can be saved by self structure measuring rotating speed by saving speed probe.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is the apparatus structure schematic illustration of one embodiment of the present invention；
Fig. 2 is scheme of installation of the inductive power supply array coil of one embodiment of the present invention in shaft；
Fig. 3 be one embodiment of the present invention output power with couple spaced relationship figure；
Fig. 4 is induction voltage waveform figure in the shaft rotation of one embodiment of the present invention；
Fig. 5 is the waveform diagram after the rotation speed measuring module conditioning of one embodiment of the present invention.
1-4 is marked to respectively indicate in figure are as follows:
The flexible magnetic conduction sheet 201, second of shaft 1, first flexible magnetic conduction sheet 202, receiving coil 3, transmitting coil 4.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection scope.
As shown in Figures 1 to 5, the section Example for the inductive power supply device of realization tachometric survey simultaneously in the present invention shows
It is intended to.
As depicted in figs. 1 and 2, in preferred embodiment shown in the figure, the inductive power supply device of tachometric survey simultaneously is realized
It is mainly used for the tachometric survey of shaft, which includes inversion unit, flexible magnetic conduction sheet, receiving coil 3, transmitting coil 4, AC-
DC rectification module and tach signal extraction module.Wherein, it is electrically connected between inverter and transmitting coil 4, to pass through exchange
Electricity carries out excitation to transmitting coil 4 to change the magnetic field of transmitting coil 4.Receiving coil 3 is with 4 electromagnetic coupling of transmitting coil to feel
The changes of magnetic field and output for answering transmitting coil 4 make alternating current.AC-DC rectification module is electrically connected with transmitting coil 4 will exchange
Electricity switchs to the direct current as constant current.Tach signal extraction module is mutually electrically connected with AC-DC rectification module, extracts transmitting
The induced voltage that coil 4 is exported successively carries out envelope detection, sluggish comparison, signal condition to induced voltage, obtains reflection sense
Answer the square wave of voltage fluctuation frequency.Transmitting coil 4 includes a square coil and the first flexible magnetic conduction sheet 201, square coil
It is pasted on the first flexible magnetic conduction sheet 201, the first flexible magnetic conduction sheet 201 is used as magnetic conduction and shielding material.Receiving coil 3 is by several
Standard block coils from parallel connection of coils is constituted, and multiple standard block coils from parallel connection of coils form coil array, and receiving coil is led by the second flexibility
The surface for being pasted onto testee is isolated in magnetic sheet 202, and the second flexible magnetic conduction sheet 202 is used as magnetic conduction and shielding material.
In above-described embodiment, tach signal extraction module is then to extract induced voltage and measured by induced voltage and felt
Answer the revolving speed of the shaft in power supply system.Flexible magnetic conduction sheet 2 is used as magnetic conduction and shielding material, can effectively improve inductive power supply system
Coupling efficiency, overcome the influence of metal swirl.
As shown in Fig. 2, in section Example of the invention, receiving coil 3 be the standard block coil of uniform rules simultaneously
Join the receiving coil of composition.Each standard block coil is pasted on the second flexible magnetic conduction sheet 202 and 1 circumferential battle array around the shaft
Column arrangement is isolated eddy current path by the second flexible magnetic conduction sheet 202, improves coupling efficiency.In the second flexible magnetic conduction sheet 202 and turn
It is additionally provided with the Amorphous Alloy Film as spacer between axis 1, further increases isolation effect.
In some embodiments, it can be adapted for the shaft 1 of the different diameters of axle by changing the quantity of standard block coil.For
Guarantee the amplitude of the induced voltage that receiving coil 3 is exported in cyclically-varying, standard block coil can be with continuous arrangement
Twisted rotary shaft 1 one weeks are reference, when being not enough to carry out array with the standard block coil of integer, by adjusting standard block line
Gap between circle being uniformly distributed to realize receiving coil 3 shaft 1 is circumferential.
In some embodiments, the coil of receiving coil 3 can be using ellipse or rectangle.Receiving coil 3 it is single
The size of coil can also be selected according to the output of inductive power supply system.
As shown in Fig. 2, transmitting coil 4 is pasted on a side surface of the first flexible magnetic conduction sheet 201.Transmitting coil 4 is arranged
In the side of receiving coil 3, vertically opposite between the two and vertical range between the two between several millimeters and several centimeters with
Guarantee may make up electromagnetic coupling relationship between the two.
The induced voltage fluctuation and entire inductive power supply system power dissipation synthesis that the length of transmitting coil 4 is extracted depending on required for are determined
It is fixed.It in some embodiments, is the stability and low-power consumption that guarantee output voltage, not less than 2 times reception marks of 4 length of transmitting coil
Quasi- unit coil length.The stability of power supply can be improved in length by increasing transmitting coil 4, reduces system power dissipation, but meeting
Reduce induced voltage fluctuating range, increases rotary speed information and extract difficulty.For example, in preferred embodiment, 4 length of transmitting coil is
3 times of standard block coil, the rotary speed information that relatively stable power supply can be obtained and easily extracted；4 width of transmitting coil is 1.4
Times receiving coil width, the speed measuring device that makes to power have higher lateral shake resistance, when non-controllable property is laterally shaken, reduce sense
Voltage change amplitude is answered, the accuracy of tachometric survey is improved.
It for example, is the application of 280mm metal rotating shaft for diameter, using permalloy film as magnetic conduction and shielding material
The flexible magnetic conduction sheet 2 of material.According to the diameter 280mm of metal rotating shaft, the standard block coil length 40mm of receiving coil 3 is selected,
Width 30mm, line footpath 0.5mm, coil method are copper-in-aluminum enameled wire, take two layers of totally 30 circle.It is uniform by 22 standard block coils
It is arranged in parallel and constitutes receiving coil array, centre distance 40mm between standard block coil in shaft circumference direction.Receiving coil 3
Array is pasted onto permalloy film, and is pasted onto metal rotating shaft by the isolation of Amorphous Alloy Film.Transmitting coil 4 is according to standard
The size of unit coil is selected as a length of 120mm (3 times of standard block coil lengths), width 42mm (1.4 times of standards
Unit coil width) square coil, coil method is 150 core litz wires, and 10 circle of the number of turns is pasted onto permalloy film, is bent
It is shaped into the cambered surface to match with 280mm diameter metal shaft.
Receiving coil 3 is constituted after all standard block coils from parallel connection of coils and is connected to AC-DC rectification module, and induced voltage is through turning
Fast extraction module, to induced voltage signal envelope detection, relatively, signal condition extracts point sluggishness to realize rotary speed information
Analysis.
The inductive power supply device for realizing tachometric survey simultaneously in above-described embodiment, can be applied to the tachometric survey of shaft 1,
Include the following steps:
S1, according to turn, 1 diameter of axle determines the quantity of standard block coil, is determined and is sent out according to the size of standard block coil
The size of ray circle 4；
S2 is fixed on the second flexible magnetic conduction sheet 202 by several standard block coils from parallel connection of coils and by the circumferential array of shaft 1
On, several standard block coils are fixed in shaft by the second flexible magnetic conduction sheet 202, and in the second flexible magnetic conduction sheet 202
Spacer is set between shaft, constitutes receiving coil 3；
Transmitting coil 4 is fixedly installed in the side of receiving coil 3, the spacing between transmitting coil 4 and receiving coil 3 in S3
It is satisfied with the requirement that the two forms electromagnetic coupling；Transmitting coil 4 can be pasted on the first flexible magnetic conduction sheet 201 by square coil
It constitutes；
S4, when shaft 1 rotates, transmitting coil 4 is in a fixed position, and receiving coil 3 is then as shaft 1 is revolved together
Turn；Transmitting coil 4 is motivated by inverter, since each standard block coil of receiving coil 3 is around the shaft 1 week
To equally distributed, therefore even variation at equal intervals between transmitting coil 4 and receiving coil 3；Receiving coil 3 is rectified to AC-DC
Module export induced voltage, at this point, induced voltage due between transmitting coil 3 and receiving coil 4 at equal intervals even variation and produce
Raw amplitude cyclically-varying, tach signal extraction module can the extracted induced voltage of root amplitude cyclically-varying and obtain
Shaft rotary speed information, and then the revolving speed of shaft 1 is calculated.
Specifically, tach signal extraction module carries out envelope detection to induced voltage, the amplitude week of induced voltage is extracted
Phase property changes waveform, removal wherein DC component and amplify, it is sluggish relatively and signal condition, obtain reflection induced voltage wave
The square wave of dynamic frequency, as shown in Fig. 4 to Fig. 5, Fig. 4 is the induction voltage waveform before the conditioning of tach signal extraction module, and Fig. 5
It is then the induced voltage square-wave waveform after the conditioning of tach signal extraction module, by Fig. 5 this it appears that induced voltage
Amplitude cyclically-varying, the variation are to reflect the revolving speed confidence of shaft 1.
Further, after obtaining the waveform of induced voltage, the revolving speed of shaft 1 is calculated with following formula:
In formula, V is the revolving speed of shaft 1, and f is the vibration frequency of induced voltage, i.e. induced electricity after signal condition
The frequency of the square wave of pressure, N are the number of one week standard block coil of shaft 1.
For above-mentioned illustrated diameter is the application of 280mm metal rotating shaft, its revolving speed is measured by the following method
To check the accurate of measurement method in the present embodiment:
When diameter 280mm metal rotating shaft works, transmitting coil 4 and the vertical face of receiving coil 3, it is between the two it is vertical away from
From between several mm-2cm, transmitting coil 4 is fixed, and receiving coil 3 is rotated with shaft.Transmitting coil 4 is using 120KHz just
String excitation, allows the distance between transmitting coil 4 and receiving coil 3 even variation at equal intervals between 0-2cm, and shaft is with 300r/
The revolving speed of min rotates, and it is as shown in Figure 3 with the variation of coupling spacing to test the power that receiving coil can export, it can be seen that
2cm transmitting and receiving coil apart from when, receiving coil still can export the power of 4W, there is higher power supply efficiency, can
To meet the needs of most of Low-power test system.Initial acquisition to induced voltage as shown in figure 4, being an amplitude period
Property variation waveform signal, external envelope reflects shaft speed conditions, and it is straight to carry out envelope detection, removal to induction voltage waveform
Flow component, amplification, sluggishness relatively, by signal improve the available square-wave signal for reflecting rotary speed information.In the embodiment party
Obtain waveform as shown in Fig. 5 in case after the extracted conditioning of tach signal, square wave frequency be 110Hz with revolving speed calculation formula V
=f/N matches, it was demonstrated that the rotating speed measurement method of the present embodiment is accurately reliable.
To sum up, the above embodiment of the present invention realizes the inductive power supply device and rotating speed measurement method of tachometric survey simultaneously, leads to
It crosses receiving coil Unified Element, solution heritage, which is answered, to be needed in power supply system brought by artificial live coiling receiving coil
Error problem is convenient for site installation test, low to installation personnel technical requirements, while being suitable for different diameter of axle shafts, structure ruler
Very little unification.By the arragement construction of receiving coil and transmitting coil, using between the two as shaft rotation time is every uniform change
The characteristics of change, extracts induction voltage waveform and carries out corresponding conditioning to which directly measurement obtains shaft revolving speed, solves heritage and answer
Power supply system needs the problem of additional installation speed probe.Eddy current path is isolated by flexible magnetic conduction sheet, improves coupling efficiency,
It solves the problems, such as that heritage answers coupling efficiency in power supply system low, realizes that the inductive power supply of high coupling efficiency, power supply efficiency are high.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in the embodiment of the present invention and embodiment can any phase
Mutually combination.
Claims (10)
- It is realized while the inductive power supply device of tachometric survey 1. a kind of, including inversion unit, transmitting coil, receiving coil, AC-DC Rectification module and tach signal extraction module, the transmitting coil connect the inversion unit, and the transmitting coil and institute Receiving coil electromagnetic coupling is stated, the output end of the receiving coil is connect with the input terminal of the AC-DC rectification module, described AC-DC rectification module exports induced current and realizes inductive power supply；The receiving coil is by multiple standard block coils from parallel connection of coils Coil array is formed, the coil array is pasted onto the surface of testee by the second flexible magnetic conduction sheet isolation；Its feature exists In:The transmitting coil is a square coil, and the square coil is pasted on the first flexible magnetic conduction sheet, by adjusting institute The length for stating square coil obtains stable power supply and is easy to the rotary speed information that the tach signal extraction module extracts；Pass through tune The width of the whole square coil makes inductive power supply device have high lateral shake resistance, the drop when non-controllable property is laterally shaken Low induced voltage amplitude of variation.
- It a kind of is realized while the inductive power supply device of tachometric survey 2. according to claim 1, it is characterised in that: the hair The size of ray circle and the size of the standard block coil are in the proportional relation of a ratio.
- It a kind of is realized while the inductive power supply device of tachometric survey 3. according to claim 2, it is characterised in that: the hair The length of ray circle is not less than the length of twice of standard block coil, and the width of the transmitting coil is the 1.2-1.4 times of mark Quasi- unit coil width.
- It a kind of is realized while the inductive power supply device of tachometric survey 4. according to claim 1, it is characterised in that: described turn Fast signal extraction module and the AC-DC rectification module are electrically connected, and are exported with AC-DC rectification module described in extraction and analysis Induced voltage, the tach signal extraction module extract analysis to the induced voltage and refer to the induced voltage successively Envelope detection, sluggish comparison, signal condition are carried out, the square wave of reflection induced voltage vibration frequency is obtained.
- It a kind of is realized while the inductive power supply device of tachometric survey 5. according to claim 1, it is characterised in that: described One flexible magnetic conduction sheet and the second flexible magnetic conduction sheet are using the permalloy film that resistivity is big, magnetic property is good.
- It a kind of is realized while the inductive power supply device of tachometric survey, feature exist 6. according to claim 1-5 In: between the described second flexible magnetic conduction sheet and testee spacer is set.
- 7. a kind of shaft rotating speed measurement method using any one of the claim 1-6 inductive power supply device, it is characterised in that: Include:S1 determines the quantity of standard block coil according to the diameter of axle of shaft, determines the hair according to the size of standard block coil The size of ray circle；S2 is fixed on the second flexible magnetic conduction sheet by several standard block coils from parallel connection of coils and by the shaft circumferential array, Several standard block coils are fixed in the shaft by the flexible magnetic conduction sheet, constitute receiving coil；Transmitting coil is fixedly installed in the side of the receiving coil, between the transmitting coil and the receiving coil in S3 Spacing is satisfied with the requirement that the two forms electromagnetic coupling；S4, when the shaft rotation when, the transmitting coil is motivated by inverter, the transmitting coil with it is described Even variation, the receiving coil export induced voltage, the revolving speed letter to AC-DC rectification module at equal intervals between receiving coil Number extraction module extracts the induced voltage, and according to the induced voltage by between the transmitting coil and the receiving coil At equal intervals amplitude cyclically-varying caused by even variation and obtain shaft revolving speed.
- 8. a kind of shaft tachometric survey using the inductive power supply device for realizing tachometric survey simultaneously according to claim 7 Method, it is characterised in that: the tach signal extraction module carries out envelope detection to the induced voltage, extracts the induced electricity The amplitude cyclically-varying waveform of pressure, removal wherein DC component and amplify, it is sluggish relatively and signal condition, reflected The square wave of the induced voltage vibration frequency；The shaft revolving speed is calculated with following formula:In formula, V is the shaft revolving speed, and f is the vibration frequency of the induced voltage, i.e., the side after signal condition The frequency of wave, N are the number of one week standard block coil of the shaft.
- 9. a kind of shaft tachometric survey using the inductive power supply device for realizing tachometric survey simultaneously according to claim 7 Method, it is characterised in that: the transmitting coil and the receiving coil are vertically opposite, and vertical range between the two is at several millimeters Between several centimeters.
- 10. a kind of shaft revolving speed using the inductive power supply device for realizing tachometric survey simultaneously according to claim 9 is surveyed Amount method, it is characterised in that: the quantity of the standard block coil is to surround the shaft one week as reference, the standard block Mutually it is close to arrangement according to its size between coil or mutually waits gaps arrangement, meets the requirement by the shaft circumferential array.
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| CN201910615649.7A CN110350668B (en) | 2019-07-09 | 2019-07-09 | Induction power supply device for realizing simultaneous rotating speed measurement and rotating speed measurement method |
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| CN201910615649.7A CN110350668B (en) | 2019-07-09 | 2019-07-09 | Induction power supply device for realizing simultaneous rotating speed measurement and rotating speed measurement method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849399A (en) * | 2019-12-17 | 2020-02-28 | 东北林业大学 | Magnetic focusing split type integrated sensor and rotating speed, torque and angle calculation method |
| CN113078742A (en) * | 2021-03-26 | 2021-07-06 | 武汉理工大学 | Wireless power transmission device with bilateral speed measurement function |
| WO2021262122A1 (en) * | 2020-06-24 | 2021-12-30 | İzmi̇r Yüksek Teknoloji̇ Ensti̇tüsü Rektörlüğü | A method and an instrument for measuring speed of rotary shaft |
| US11953348B2 (en) | 2019-04-12 | 2024-04-09 | Dana Automotive Systems Group, Llc | Non-contact sensor assembly and method of sensing using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11953348B2 (en) | 2019-04-12 | 2024-04-09 | Dana Automotive Systems Group, Llc | Non-contact sensor assembly and method of sensing using the same |
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| CN110849399B (en) * | 2019-12-17 | 2024-05-14 | 东北林业大学 | Magnetic focusing split type integrated sensor and rotating speed, torque and angle calculation method |
| WO2021262122A1 (en) * | 2020-06-24 | 2021-12-30 | İzmi̇r Yüksek Teknoloji̇ Ensti̇tüsü Rektörlüğü | A method and an instrument for measuring speed of rotary shaft |
| CN113078742A (en) * | 2021-03-26 | 2021-07-06 | 武汉理工大学 | Wireless power transmission device with bilateral speed measurement function |
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