CN209296106U - A kind of magnetostriction liquidometer - Google Patents
A kind of magnetostriction liquidometer Download PDFInfo
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- CN209296106U CN209296106U CN201920081843.7U CN201920081843U CN209296106U CN 209296106 U CN209296106 U CN 209296106U CN 201920081843 U CN201920081843 U CN 201920081843U CN 209296106 U CN209296106 U CN 209296106U
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Abstract
This application involves a kind of magnetostriction liquidometers, belong to magnetostriction liquidometer technical field.The application includes: fixator；Multiple measuring units, multiple measuring units are successively sequentially fixed on the holder along holder length direction；More waveguide filaments, more waveguide filaments connect one to one with multiple measuring units；Every waveguide filament is arranged along the length direction of fixator, and the tail end of a upper waveguide filament at least extends to the head end of next waveguide filament；Magnetic float is arranged on the holder, and when liquid level changes, magnetic float upwardly or downwardly floats along fixator, and there are waveguide filaments to be in wherein in the magnetic field that magnetic float itself is formed.It is helped to realize by the application and guarantees measurement accuracy while promoting measuring range.
Description
Technical field
The application belongs to magnetostriction liquidometer technical field, and in particular to a kind of magnetostriction liquidometer.
Background technique
Magnetostriction liquidometer is mainly used for the level gauging of liquid.
When magnetostriction liquidometer works, pulse current is motivated on waveguide filament, meeting when which propagates along waveguide filament
Impulse current magnetic field is generated around waveguide filament.It is furnished with a magnetic float outside the measuring staff of magnetostriction liquidometer, this is magnetic
Float can be moved up and down along measuring staff with the variation of liquid level.When the magnetic field phase that impulse current magnetic field and magnetic float itself generate
When chance, the magnetic field around magnetic float changes so that the waveguide filament being made by magnetostriction materials is in magnetic float institute
Position generate a torsion wave impulse, the torsion wave impulse be mechanical vibration wave, torsion wave impulse with fixed speed edge
Waveguide filament is propagated to its both ends, when being arranged on the sensing unit of waveguide filament head end and detecting, is passed through to calculate and is issued driving pulse
Time difference with torsion wave impulse is detected, the position where float, the i.e. position of liquid level can be accurately determined.
It in practical applications, is mechanical vibration wave due to reversing wave impulse on waveguide filament when measurement range increases, it can be with
The increase of waveguide filament length and decay.Measurement for wide range, for example, when 30 meters or more ranges, torsion wave impulse with
The increase of waveguide filament length and decay, the signal being finally detected is very faint, even if signal can also flood by noise by amplification
Not yet, causing can not reliable measurements.Meanwhile the error of wave impulse spread speed on waveguide filament is reversed, magnetostriction liquidometer
Error mostlys come from the error of torsion wave impulse spread speed on waveguide filament, and measurement error is constantly tired with the increase of range
Add.
It to sum up analyzes, magnetostriction liquidometer has that the bigger error of range is bigger, and then limits in actual use
The measuring range of magnetostriction liquidometer is made.
Summary of the invention
To be overcome the problems, such as present in the relevant technologies at least to a certain extent, the application provides a kind of magnetostrictive liquid level
Meter, helps to guarantee measurement accuracy while promoting measuring range.
In order to achieve the above object, the application adopts the following technical scheme that
In a first aspect,
The application provides a kind of magnetostriction liquidometer, comprising:
Fixator；
Multiple measuring units, multiple measuring units are successively sequentially fixed on described solid along the holder length direction
Determine on device；
More waveguide filaments, the more waveguide filaments connect one to one with multiple measuring units；
The every waveguide filament is arranged along the length direction of the fixator, and the tail end of a upper waveguide filament is extremely
The head end of the next waveguide filament is extended to less；
Magnetic float is set on the fixator, and when liquid level changes, the magnetic float is along the fixator
It upwardly or downwardly floats, and there are the waveguide filaments to be in wherein in the magnetic field that the magnetic float itself is formed.
Further, the tail end of the upper waveguide filament at least extends to the head end of the next waveguide filament,
Include:
The tail end of a upper waveguide filament is more than the head end of the next waveguide filament, but is less than the next wave
The tail end of seal wire, so that two adjacent measuring units have measurement overlap area.
Further, multiple measuring unit equidistantly distributeds, and/or, the measurement that the every waveguide filament is formed is long
It spends all the same.
Further, the magnetostriction liquidometer further include: multiple dampers, multiple dampers, which correspond, to be connected
The tail end in the more waveguide filaments is connect, the damper can weaken the torsional wave arteries and veins for absorbing and propagating to the waveguide filament tail end
Punching.
Further, the magnetostriction liquidometer further include: main control unit, the main control unit respectively with it is multiple described
Measuring unit connection, for receiving the data for measuring the measuring unit of the magnetic float and sending, and according to the number
According to obtaining liquid level.
Further, the measuring unit include: first processor, the first driving pulse circuit module, the first inductor,
First receives amplification module and first communication module；
The first processor is connect with the first driving pulse circuit module, the first driving pulse circuit module
It is connect with the waveguide filament；
The first processor connect with the first reception amplification module, and described first receives amplification module and described the
The head end of the waveguide filament is arranged in the connection of one inductor, first inductor, is transmitted to the waveguide for incuding detection
The torsional wave impulse wave of silk head end；
The first processor is connect with the first communication module.
Further, the main control unit includes: second processor and second communication module；
The second processor is connect with the second communication module；
The second communication module is connect with the first communication module, to realize that the main control unit and the measurement are single
Member connection.
Further, first inductor uses induction coil or piezoelectric ceramics.
Further, the measuring unit includes: the second driving pulse circuit module, the second reception amplification module and second
Inductor；
Wherein, the second driving pulse circuit module is connect with the waveguide filament；
The second reception amplification module is connect with second inductor, and second inductor is arranged in the waveguide
The head end of silk, the torsional wave impulse wave for being transmitted to the waveguide filament head end for incuding detection.
Further, the main control unit includes: third processor, transmitting gating switch and reception gating switch；
The third processor is connect with the transmitting gating switch and the reception gating switch respectively, the transmitting choosing
It opens up pass to connect with the second driving pulse circuit module of each measuring unit respectively, the reception gating switch point
It is not connect with the second reception amplification module of each measuring unit.
Further, second inductor uses induction coil or piezoelectric ceramics.
Second aspect,
The application provides a kind of level measuring method, which is characterized in that the method utilizes the magnetic as described in any of the above-described
Cause flexible liquidometer, which comprises
Determine the measuring unit for measuring the magnetic float；
Liquid level is calculated according to the measuring unit determined.
Further, liquid level is calculated in the measuring unit that the basis is determined, comprising:
According to the measuring unit determined, the magnetic float and default survey are calculated using preset calculation formula
Measure the distance between datum mark；
Liquid level is obtained according to the calculated distance.
Further, the preset calculation formula are as follows:
Wherein, Qn+Qn-1=100%；
In formula, D is the distance between the magnetic float and the default datum mark；LnFor n-th of measurement
Unit measures the distance that the magnetic float obtains；Ln-1Measure what the magnetic float obtained for (n-1)th measuring unit
Distance；
I, j and n is integer, and 1≤i≤n, 1≤j≤n-1；
As i=1, d0For the distance between the 1st measuring unit and the default datum mark；As i >=1,
di-1For the distance between (i-1)-th measuring unit and ith measurement unit；
As j=1, d0For the distance between the 1st measuring unit and the default datum mark；As j >=1,
dj-1For the distance between -1 measuring unit of jth and j-th of measuring unit；
QnAnd Qn-1It is weight.
Further, if it is confirmed that the measuring unit gone out is only measuring unit n, then Qn=100%, Qn-1=0；Institute
Preset calculation formula is stated to simplify are as follows:
Further, if it is confirmed that the measuring unit gone out is LnAnd Ln-1, the method also includes:
According to position of the magnetic float in the measurement overlap area, Q is obtainednAnd Qn-1Numerical value.
Further, the position according to the magnetic float in the measurement overlap area, obtains QnAnd Qn-1Number
Value, comprising:
According to the measurement overlap area, Q is calculated using preset first linear formulan, and utilize preset the
Q is calculated in bilinear formulan-1, so that Qn+Qn-1=100%, wherein the slope of first linear formula is positive number,
The slope of second linear formula is negative.
The application use above technical scheme, at least have it is following the utility model has the advantages that
Total range of magnetostriction liquidometer is split into multiple small-range modes by the application, and each measuring unit only carries out
Small-range measurement task where it in measurement range, it is available to measure magnetic when measuring unit measures magnetic float
The distance between the measuring unit of property float and magnetic float, and fixed using the position between each measuring unit, it can be true
The liquid level of liquid level, helps to realize and guarantees measurement accuracy while promoting measuring range where determining magnetic float.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The application can be limited.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram for the magnetostriction liquidometer that the application one embodiment provides；
Fig. 2 is the schematic diagram that damper is arranged in the waveguide filament tail end that the application one embodiment provides；
Fig. 3 is that the measuring unit of magnetostriction liquidometer that the application one embodiment provides and the structure of main control unit are shown
It is intended to；
Fig. 4 is the measuring unit for the magnetostriction liquidometer that another embodiment of the application provides and the structure of main control unit
Schematic diagram；
Fig. 5 is the flow diagram for the level measuring method that the application one embodiment provides；
Fig. 6 is the signal of the overlapping measurement regions between the two neighboring measuring unit that the application one embodiment provides
Figure；
Fig. 7 is the Q that the application one embodiment providesnAnd Qn-1In the schematic diagram of overlapping measurement regions variation.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application clearer, the technical solution of the application will be carried out below
Detailed description.Obviously, described embodiments are only a part of embodiments of the present application, instead of all the embodiments.Base
Embodiment in the application, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the application is protected.
Fig. 1 is the structural schematic diagram for the magnetostriction liquidometer that the application one embodiment provides；As shown in Figure 1, the magnetic
The flexible liquidometer is caused to include:
Fixator 1；
Multiple measuring units 2, multiple measuring units 2 are successively sequentially fixed on institute along 1 length direction of fixator
It states on fixator 1；
More waveguide filaments 3, the more waveguide filaments 3 connect one to one with multiple measuring units 2；
The every waveguide filament 3 is arranged along the length direction of the fixator 1, and the tail of a upper waveguide filament 3
End at least extends to the head end of the next waveguide filament 3；
Magnetic float 4 is set on the fixator 1, and when liquid level changes, the magnetic float 4 is along described solid
Determine device 1 upwardly or downwardly to float, and there are the waveguide filaments 3 to be in the magnetic field that the magnetic float 4 itself is formed
Wherein.
It is applied below by way of concrete application scene and above-described embodiment scheme is illustrated.
In an application scenarios, liquid level is measured using magnetostriction liquidometer, is needed magnetostriction liquidometer
It is vertical to place, magnetostriction liquidometer is protruded into liquid, so that magnetic float is swum on liquid level, magnetic float is set in solid
Determine on device 1, when liquid level changes, the magnetic float 4 upwardly or downwardly floats along the fixator 1.In the application
Upper one waveguide filament 3 and the relative position of the next waveguide filament 3 describe, be to be measured based on magnetostriction liquidometer
The description of vertical placement status when liquid level.
In practical applications, fixator 1 can be hollow long rod structure, and each measuring unit 2 and corresponding waveguide filament 3 can
To be arranged in inside the hollow long rod structure of fixator 1, realize after the hollow long rod structure of fixator 1 is sealed by measuring unit
2 and water segregation.
For magnetic float, the water surface can be swum in, can be made of float and permanent magnet ring, float has a perforation
Hole, the through hole can allow the fixator 1 to pass through, and permanent magnet ring can be set in float, be arranged around the through hole.
In the application, each measuring unit 2 combine corresponding waveguide filament 3 to the measuring principle of magnetic float to it is related
The measuring principle of magnetostriction liquidometer is identical in technology, specifically: measuring unit 2 passes through on waveguide filament 3 connected to it
Apply excitation pulse signal, transmits excitation pulse signal along waveguide filament 3 and generate pulsed magnetic field around waveguide filament 3, work as biography
When being multicast to 4 position of magnetic float, in the magnetic field phase separation of this position pulsed magnetic field generated and magnetic float 4 itself generation, make
It obtains waveguide filament 3 and generates magnetostrictive effect, so that waveguide filament 3 generates torsion wave impulse, torsional wave impulse wave in this position
It is propagated along waveguide filament 3 to 2 direction of measuring unit, when measuring unit 2 detects torsional wave impulse wave, shows the measuring unit 2
It detects magnetic float 4, issues and detect the time difference of torsion wave impulse by calculating driving pulse, it may be determined that measuring unit
The distance between 2 and magnetic float 4.
In the application, because total range of magnetostriction liquidometer is split into multiple small-range modes, each measuring unit 2
Small-range measurement task where only carrying out it in measurement range avoids out to guarantee the continuity measurement to magnetic float
Now area is lost in measurement, needs when to level gauging, has measuring unit 2 to can be measured that magnetic float 4 always.In order to realize
Above-mentioned purpose, in the application, the every waveguide filament 3 along the length direction setting of the fixator 1 when, a upper wave
The tail end of seal wire 3 at least extends to the head end of the next waveguide filament 3, it is ensured that in level gauging, there is measurement always
Unit 2 measures magnetic float 4.For example, the tail end of a upper waveguide filament 3 extends right to the next waveguide filament 3
Head end the case where so that the head end end face of the tail end end face of a upper waveguide filament 3 and the next waveguide filament 3, shape
At being staggered completely mutually, and it is in conplane state.
Total range of magnetostriction liquidometer is split into multiple small-range modes, each by scheme through the foregoing embodiment
Small-range measurement task where measuring unit 2 only carries out it in measurement range, small-range measurement task can guarantee measurement essence
Degree, the head end of the next waveguide filament 3 is at least extended to by the tail end of upper one waveguide filament 3, it is ensured that in liquid
When the measurement of position, there is measuring unit 2 to measure magnetic float 4 always.It is available when measuring unit 2 measures magnetic float 4
The distance between measuring unit 2 and the magnetic float 4 of magnetic float 4 are measured, and utilizes the position between each measuring unit 2
Fixation is set, can determine the liquid level of 4 place liquid level of magnetic float, helps to realize and guarantees measurement while promoting measuring range
Precision.In a particular application, the measuring range that magnetostriction liquidometer may be implemented infinitely increases, and also ensures measurement essence
Degree.
In one embodiment, as shown in Figure 1, the tail end of the upper waveguide filament 3 at least extends to next
The head end of the waveguide filament 3, comprising:
The tail end of a upper waveguide filament 3 is more than the head end of the next waveguide filament 3, but is less than described in next
The tail end of waveguide filament 3, so that two adjacent measuring units 2 have measurement overlap area.
Pass through the above embodiments of the present application scheme, it is ensured that in level gauging, there is measuring unit 2 to measure always
Magnetic float 4, while it being also convenient for practical application implementation, it embodies are as follows: the tail end of a upper waveguide filament 3 extends right to
The case where head end of the next waveguide filament 3, so that the tail end end face of a upper waveguide filament 3 and the next waveguide
The head end end face of silk 3, formation are staggered mutually completely, and in conplane state, the embodiment situation in practical applications,
It is larger for the enforcement difficulty for being in head end end face and tail end end face in one plane together.A meanwhile upper waveguide filament 3
Tail end be less than the tail end of the next waveguide filament 3, restrict is played to the measurement length that every waveguide wire 3 is formed and is made
With, too long will not make a waveguide filament 3 tail end be more than the next waveguide filament 3 tail end.
By the example scheme, help to implement convenient for practical application, it helps improving measurement accuracy.
Above-described embodiment scheme is illustrated below by way of concrete application.
When liquid level changes, magnetic float 4 upwardly or downwardly floats along fixator 1, because and a upper waveguide filament 3
Tail end be more than next waveguide filament 3 head end, but be less than the tail end of next waveguide filament 3, magnetic float 4 is with liquid level along solid
When determining device 1 and upwardly or downwardly floating, the positional relationship with the waveguide filament 3 at liquid level may be: have at a waveguide filament 3
In the magnetic field that the magnetic float 4 itself is formed, alternatively, there is two waveguide filaments 3 to be in the magnetic float 4 itself formation
In magnetic field.
Multiple measuring units 2 are successively sequentially fixed along 1 length direction of fixator, in practical applications, magnetostriction
Liquidometer using when be vertically arranged, the successively sequence of each measuring unit can be determined under upper.For example, by taking Fig. 1 as an example, figure
There are three measuring units for the 1 magnetostriction liquidometer tool illustrated, when placing vertically, from top to bottom successively are as follows: the first measurement is single
First 21, second measuring unit 22 and third measuring unit 23, correspondingly, what is connect with the first measuring unit 21 is waveguide wire 31,
What is connect with the second measuring unit 22 is waveguide wire 32, and what is connect with third measuring unit 23 is waveguide wire 33.Three measurements are single
After member is fixed on fixator 1, the distance between adjacent measurement is certain.It is available to measure magnetic float when determining liquid level
The distance between the measuring unit of son 4 and magnetic float 4, and fixed using the position between each measuring unit, it can determine
The liquid level of 4 place liquid level of magnetic float.
When in the magnetic field that an only waveguide filament is in magnetic float 4 itself formation, for example, only being measured with third single
When the waveguide filament 33 of 23 connection of member is located in the magnetic field of magnetic float 4 itself formation, third measuring unit 23 can be measured that magnetic
Property float 4, can according to driving pulse issue and detect torsion wave impulse time difference, determine 23 He of third measuring unit
The distance between magnetic float 4, then because the position of each measuring unit is certain, the distance between each measuring unit is certain,
A datum mark can be preset, liquid level can be determined by presetting datum mark by this, for example, with the first measuring unit 21
For datum mark, according to the distance between the first measuring unit 21 and the second measuring unit 22, the second measuring unit 22 and
The distance between three measuring units 23 and the distance between third measuring unit 23 and magnetic float 4, can be obtained default survey
The distance between datum mark and magnetic float are measured, namely obtains liquid level numerical value.
When there is two waveguide filaments to be in the magnetic field of magnetic float 4 itself formation, for example, liquid level rises, so that third
The corresponding waveguide filament 33 of measuring unit 23 and the corresponding waveguide filament 32 of the second measuring unit 22 are in magnetic float 4 itself formation
In magnetic field, that is, magnetic float 4 is in the overlapping measurement zone of the second measuring unit 22 and third measuring unit 23, the overlapping
Measurement zone can guarantee the continuity that magnetostriction liquidometer measures 4 gamut of magnetic float, and not having interruption cannot measure
The case where magnetic float 4, occurs.The liquid level for there are two waveguide filaments to be in the magnetic field of magnetic float 4 itself formation is determined,
There are many methods of determination, for example, when liquid level rises so that there is two waveguide filaments to be in the magnetic field of magnetic float 4 itself formation
When, it can set and liquid level is only determined to the measurement of magnetic float 4 by the measuring unit that is located above；Alternatively, when under liquid level
When drop is so that there is two waveguide filaments to be in the magnetic field of magnetic float 4 itself formation, it can set only through underlying survey
Amount unit determines liquid level to the measurement of magnetic float 4.
Further, multiple 2 equidistantly distributeds of the measuring unit.It can make the distance between each measuring unit 2
It also is all identical, so that becoming simple in the calculating confirmation of liquid level.
Further, the measurement length that the every waveguide filament 3 is formed is all the same.It can make each measuring unit 2
Measuring range is all identical, so that becoming simple in the calculating confirmation of liquid level.
Further, multiple 2 equidistantly distributeds of the measuring unit, and the every formation of waveguide filament 3 be can also be
Measurement length it is all the same.May make each measuring unit 2 measuring range be all it is identical, and each measuring unit 2 it
Between distance be also all identical so that the calculating in liquid level confirms upper simpler convenience.
Fig. 2 is the schematic diagram that damper is arranged in the waveguide filament tail end that the application one embodiment provides；As shown in Fig. 2,
In one embodiment, the magnetostriction liquidometer further include: multiple dampers 5, multiple dampers 5 connect one to one
In the tail end of the more waveguide filaments 3, the damper 5 can weaken the torsional wave for absorbing and propagating to 3 tail end of waveguide filament
Pulse.
In a particular application, on the waveguide filament 3 at magnetic float 4, the pulsed magnetic field and magnetic float 4 itself of generation are produced
Raw magnetic field phase separation, so that waveguide filament 3 generates magnetostrictive effect, waveguide filament 3 generates torsion wave impulse, torsion in this position
Wave impulse is propagated along waveguide filament 3 to 3 direction of both ends of waveguide filament, and the torsion wave impulse propagated to 3 head end direction of waveguide filament is measured
Unit 2 detects, the torsion wave impulse propagated to 3 tail end direction of waveguide filament be it is extra, in order to avoid it generates negative shadow
It rings, needs to sponge the torsional wave attenuation propagated to 3 tail end direction of waveguide filament, hindered by being arranged in 3 tail end of waveguide filament
Buddhist nun's device 5 can be damped device 5 and weaken absorption when the torsion wave impulse propagated to 3 tail end direction of waveguide filament is passed on damper 5.
In above-mentioned related embodiment, the calculating of liquid level is determined, can be realized by main control unit.For the master control list
Member can not be included in not applying, and user from other producers in use, buy；Alternatively, also may include the master in the application
Unit is controlled, realization facilitates user, it is based on this, in one embodiment, and the magnetostriction liquidometer further include: main control unit 6,
The main control unit 6 is connect with multiple measuring units 2 respectively, for receiving the survey for measuring the magnetic float 4
The data that unit 2 is sent are measured, and obtain liquid level according to the data.
Fig. 3 is that the measuring unit of magnetostriction liquidometer that the application one embodiment provides and the structure of main control unit are shown
It is intended to；As shown in figure 3, in one embodiment, the measuring unit 2 includes: first processor 201, the first driving pulse electricity
Road module 202, the first inductor 203, first receive amplification module 204 and first communication module 205；
The first processor 201 is connect with the first driving pulse circuit module 202, the first driving pulse electricity
Road module 202 is connect with the waveguide filament 3；
The first processor 201 is connect with the first reception amplification module 204, and described first receives amplification module
204 connect with first inductor 203, and the head end of the waveguide filament 3 is arranged in first inductor 203, for incuding
Detection is transmitted to the torsional wave impulse wave of 3 head end of waveguide filament；
The first processor 201 is connect with the first communication module 205.
For each device blocks in above-described embodiment scheme, in practical applications, magnetostrictive liquid level can be used
The mature application of meter in the related technology.Connection for the driving pulse circuit module 202 and the waveguide filament 3, motivates arteries and veins
The anode for rushing circuit module 202 is connect with the head end of waveguide filament 3, tail end and the driving pulse circuit module 202 of waveguide filament 3
It is connected between cathode by primary Ioops conducting wire, forms closed circuit to realize.
As shown in figure 3, further, the main control unit 6 includes: second processor 601 and second communication module 602；
The second processor 601 is connect with the second communication module 602；
The second communication module 602 is connect with the first communication module 205, to realize the main control unit 6 and institute
State the connection of measuring unit 2.
Below by way of specific application note, above-mentioned related embodiment scheme is illustrated.
In a particular application, first processor 201 generates driving pulse for controlling the first driving pulse circuit module 202
Signal transmits excitation pulse signal along waveguide filament 3 and generates arteries and veins around waveguide filament 3 to be applied on the head end of waveguide filament 3
Rush magnetic field.
On waveguide filament 3 at magnetic float 4, the magnetic field that the pulsed magnetic field and magnetic float 4 itself of generation generate mutually is made
With so that waveguide filament 3 generates magnetostrictive effect, waveguide filament 3 generates torsion wave impulse in this position, reverses wave impulse along waveguide
Silk 3 is propagated to 3 direction of both ends of waveguide filament, and the torsion wave impulse propagated to 3 head end direction of waveguide filament is incuded by the first inductor 203
It detects, is then sent to the first reception amplification module 204 and processing is amplified to the signal detected, first receives amplification mould
Block 204 again sends the signal after enhanced processing in first processor 201, and first processor 201 is adopted using its included AD
Egf block carries out the sending and inspection that pass through calculating driving pulse using processing, first processor 201 to the amplified signal received
Measure the time difference of torsion wave impulse, it may be determined that the distance between measuring unit 2 and magnetic float 4.Then magnetic is accordingly detected
Property float 4 measuring unit 2 when will determine that the distance between measuring unit 2 and magnetic float 4 are sent to main control unit 6, it is main
Control unit 6 can be determined to detect that the measuring unit 2 of magnetic float 4, the available magnetism that measures of such main control unit 6 are floated
The distance between the measuring unit 2 of son 4 and magnetic float 4, and fixed using the position between each measuring unit 2, thus really
Determine the liquid level of 4 place liquid level of magnetic float.
Fig. 4 is the measuring unit for the magnetostriction liquidometer that another embodiment of the application provides and the structure of main control unit
Schematic diagram；As shown in figure 4, in another embodiment, the measuring unit 2 include: the second driving pulse circuit module 206,
Second receives amplification module 207 and the second inductor 208；
Wherein, the second driving pulse circuit module 206 is connect with the waveguide filament 3；
The second reception amplification module 207 is connect with second inductor 208, and institute's the second inductor 208 setting exists
The head end of the waveguide filament 3, the torsional wave impulse wave for being transmitted to 3 head end of waveguide filament for incuding detection.
As shown in figure 4, further, the main control unit 6 includes: third processor 603, transmitting 604 and of gating switch
Receive gating switch 605；
The third processor 603 is connect with the transmitting gating switch 604 and the reception gating switch 605 respectively,
The transmitting gating switch 604 is connect with the second driving pulse circuit module 206 of each measuring unit 2 respectively,
The gating switch 605 that receives is connect with the second reception amplification module 207 of each measuring unit 2 respectively.
Below by way of specific application note, above-mentioned related embodiment scheme is illustrated.
In a particular application, the third processor 603 in liquidometer main control unit 6 issues control signal, is selected by transmitting
The the second driving pulse circuit module 206 for closing the measuring unit 2 that 604 are sent to the control signal gating is opened up, to be allowed to produce
Raw excitation pulse signal transmits excitation pulse signal along waveguide filament 3 and in waveguide filament 3 to be applied on the head end of waveguide filament 3
Surrounding generates pulsed magnetic field.
On waveguide filament 3 at magnetic float 4, the magnetic field that the pulsed magnetic field and magnetic float 4 itself of generation generate mutually is made
With so that waveguide filament 3 generates magnetostrictive effect, waveguide filament 3 generates torsion wave impulse in this position, reverses wave impulse along waveguide
Silk 3 is propagated to 3 direction of both ends of waveguide filament, and the torsion wave impulse propagated to 3 head end direction of waveguide filament is incuded by the second inductor 208
It detects, is then sent to the second reception amplification module 207 and processing is amplified to the signal detected, opened by receiving gating
It closing, the second reception amplification module 207 again sends the signal after enhanced processing in the third processor 603 of main control unit 6,
The liquid level of 4 place liquid level of magnetic float is determined by main control unit 6.
In a particular application, induction coil or piezoelectric ceramics can be used in above-mentioned relevant inductor, can be achieved to torsion
Turn the induction detection of wave impulse.
In a particular application, the transmitting gating switch 604 and the reception gating switch 605 can be used in the related technology
Gating switch product, there is multiple gating channels, each gating channel one measuring unit of correspondence.
Fig. 5 is the flow diagram for the level measuring method that the application one embodiment provides, and the method is using as above
Any one magnetostriction liquidometer is stated, as shown in figure 5, the level measuring method includes the following steps:
S501, the measuring unit for measuring the magnetic float is determined；
S502, liquid level is calculated according to the measuring unit determined.
Above-mentioned measurement method example scheme, using the above-mentioned relevant magnetostriction liquidometer of the application, when determining to survey
When measuring the measuring unit of the magnetic float, namely the measuring unit and magnetic float of magnetic float are obtained measuring
The distance between, it is fixed using the position between each measuring unit, the liquid level of liquid level where can determining magnetic float.Facilitate
Realization guarantees measurement accuracy while promoting measuring range.In a particular application, the survey of magnetostriction liquidometer may be implemented
Amount range infinitely increases, and also ensures measurement accuracy.
In one embodiment, liquid level is calculated in the measuring unit that the basis is determined, comprising:
According to the measuring unit determined, the magnetic float and default survey are calculated using preset calculation formula
Measure the distance between datum mark；
Liquid level is obtained according to the calculated distance.
In one embodiment, the preset calculation formula are as follows:
Wherein, Qn+Qn-1=100%；
In formula, D is the distance between the magnetic float and the default datum mark；LnFor n-th of measurement
Unit measures the distance that the magnetic float obtains；Ln-1Measure what the magnetic float obtained for (n-1)th measuring unit
Distance；
I, j and n is integer, and 1≤i≤n, 1≤j≤n-1；
As i=1, d0For the distance between the 1st measuring unit and the default datum mark；As i >=1,
di-1For the distance between (i-1)-th measuring unit and ith measurement unit；
As j=1, d0For the distance between the 1st measuring unit and the default datum mark；As j >=1,
dj-1For the distance between -1 measuring unit of jth and j-th of measuring unit；
QnAnd Qn-1It is weight.
Above-described embodiment scheme, by introducing weight variable QnAnd Qn-1, avoid the measurement result of a measuring unit unexpected
The measurement result of another measuring unit is jumped to, the measurement result of especially measurement overlap area jumps, and guarantees liquid level measurement
The stability and continuity of result are measured, to keep measurement more accurate reliable.
Further, if it is confirmed that the measuring unit gone out is only measuring unit n, then Qn=100%, Qn-1=0；Institute
Preset calculation formula is stated to simplify are as follows:
Further, if it is confirmed that the measuring unit gone out is LnAnd Ln-1, the method also includes:
According to position of the magnetic float in the measurement overlap area, Q is obtainednAnd Qn-1Numerical value.
Above-described embodiment scheme obtains Q according to position of the magnetic float in the measurement overlap areanAnd Qn-1's
Numerical value, so that QnAnd Qn-1Numerical value carry out Dynamic Matching variation with change in location of the magnetic float in measurement overlap area, help
The measurement of another measuring unit is transitioned by the measurement smooth steady of a measuring unit in realization.
Fig. 6 is the signal of the overlapping measurement regions between the two neighboring measuring unit that the application one embodiment provides
Figure；Fig. 7 is the Q that the application one embodiment providesnAnd Qn-1In the schematic diagram of overlapping measurement regions variation；Such as Fig. 6 and Fig. 7 institute
Show, further, the position according to the magnetic float in the measurement overlap area obtains QnAnd Qn-1Numerical value, packet
It includes:
According to the measurement overlap area, Q is calculated using preset first linear formulan, and utilize preset the
Q is calculated in bilinear formulan-1, so that Qn+Qn-1=100%, wherein the slope of first linear formula is positive number,
The slope of second linear formula is negative.
As shown in Figure 6 and Figure 7, overlapping measurement regions of the AB between adjacent measurement, by A to the direction B, QnFrom 0%
It is incremented by 100% and is gradually incremented by, correspondingly, Qn-1From 100% to 0% gradually successively decreases.In measurement overlap area, a measurement result
Weight gradually increases, another measurement result weight is gradually reduced, but the two addition is always 100%, guarantees two neighboring survey
It measures unit and completes continuous-stable measurement transition in measurement overlap area.
Above-mentioned related embodiment scheme is illustrated below by way of concrete application scene.
In a concrete application, there is magnetostriction liquidometer the first measuring unit and the second measuring unit, mangneto to stretch
Contracting liquidometer places measurement liquid level vertically, and the first measuring unit is upper, and the second measuring unit is under, and the two relative positional relationship is such as
Shown in Fig. 6.
It is assumed that the waveguide filament only connecting with the second measuring unit when starting is in the magnetic of the magnetic float itself formation
In, it can determine that the measuring unit for measuring magnetic float is only the second measuring unit, according to if it is confirmed that going out
Measuring unit is only measuring unit n, then Qn=100%, Qn-1=0；Determining the formula used is:
Corresponding to the second measuring unit, the distance between magnetic float and the datum mark D=L2+ d0+d1,
In, L2The distance that the magnetic float obtains, d are measured for the second measuring unit0For the first measuring unit and the default measurement base
The distance between on schedule；d1For the distance between the first measuring unit and the second measuring unit.
In practical applications, for presetting datum mark, the first measuring unit position can be set as default
Datum mark, such d0=0, easily facilitate calculating measurement.
As liquid level rises, so that the first measuring unit and the second measuring unit are in the magnetic float itself formation
In magnetic field, in this case,
D=(L2+d0+d1)*Q2+(L1+d0)*Q1
Wherein, L1The distance that the magnetic float obtains, L are measured for the first measuring unit2Institute is measured for the second measuring unit
State the distance that magnetic float obtains, d0For the distance between the first measuring unit and the default datum mark；d1It is surveyed for first
Measure the distance between unit and the second measuring unit.
For Q1And Q2, can be obtained according to their corresponding linear formulas.
In a particular application, first measuring unit can be set as to default datum mark, multiple measurements are single
First equidistantly distributed, distance is certain between realizing adjacent measurement, so that default calculation formula is more easy, and described in every
The measurement length that waveguide filament is formed is all the same, realizes merely with a kind of weight variation tendency formula, realizes to the excellent of survey calculation
Change.
Default datum mark is set as in first measuring unit, multiple measuring unit equidistantly distributeds, and it is every
When the measurement length that waveguide filament described in root is formed is all the same, corresponding preset calculation formula optimization are as follows:
D=(Ln+(n-1)d)*Qn+(Ln-1+(n-2)d)*Qn-1
It is understood that same or similar part can mutually refer in the various embodiments described above, in some embodiments
Unspecified content may refer to the same or similar content in other embodiments.
It should be noted that term " first ", " second " etc. are used for description purposes only in the description of the present application, without
It can be interpreted as indication or suggestion relative importance.In addition, in the description of the present application, unless otherwise indicated, the meaning of " multiple "
Refer at least two.
Any process described otherwise above or method description in flow chart or herein it is understood that are as follows: expression includes
It is one or more for realizing specific logical function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the application includes other realization, wherein can not press shown or discussed suitable
Sequence, including according to related function by it is basic simultaneously in the way of or in the opposite order, Lai Zhihang function, this should be by the application
Embodiment person of ordinary skill in the field understood.
It should be appreciated that each section of the application can be realized with hardware, software, firmware or their combination.Above-mentioned
In embodiment, software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realized.It, and in another embodiment, can be under well known in the art for example, if realized with hardware
Any one of column technology or their combination are realized: having a logic gates for realizing logic function to data-signal
Discrete logic, with suitable combinational logic gate circuit specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
Those skilled in the art are understood that realize all or part of step that above-described embodiment method carries
It suddenly is that relevant hardware can be instructed to complete by program, the program can store in a kind of computer-readable storage medium
In matter, which when being executed, includes the steps that one or a combination set of embodiment of the method.
It, can also be in addition, can integrate in a processing module in each functional unit in each embodiment of the application
It is that each unit physically exists alone, can also be integrated in two or more units in a module.Above-mentioned integrated mould
Block both can take the form of hardware realization, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized and when sold or used as an independent product in the form of software function module, also can store in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only memory, disk or CD etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the application.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although embodiments herein has been shown and described above, it is to be understood that above-described embodiment is example
Property, it should not be understood as the limitation to the application, those skilled in the art within the scope of application can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of magnetostriction liquidometer characterized by comprising
Fixator；
Multiple measuring units, multiple measuring units are successively sequentially fixed on the fixator along the holder length direction
On；
More waveguide filaments, the more waveguide filaments connect one to one with multiple measuring units；
The every waveguide filament is arranged along the length direction of the fixator, and the tail end of a upper waveguide filament at least prolongs
Extend to the head end of the next waveguide filament；
Magnetic float is set on the fixator, and when liquid level changes, the magnetic float is upward along the fixator
Or it floats downwards, and there are the waveguide filaments to be in wherein in the magnetic field that the magnetic float itself is formed.
2. magnetostriction liquidometer according to claim 1, which is characterized in that the tail end of the upper waveguide filament
At least extend to the head end of the next waveguide filament, comprising:
The tail end of a upper waveguide filament is more than the head end of the next waveguide filament, but is less than the next waveguide filament
Tail end so that two adjacent measuring units have measurement overlap area.
3. magnetostriction liquidometer according to claim 1, which is characterized in that multiple measuring units are equidistantly divided
Cloth, and/or, the measurement length that the every waveguide filament is formed is all the same.
4. magnetostriction liquidometer according to claim 1-3, which is characterized in that the magnetostriction liquidometer
Further include: main control unit, the main control unit are connect with multiple measuring units respectively, measure the magnetism for receiving
The data that the measuring unit of float is sent, and liquid level is obtained according to the data.
5. magnetostriction liquidometer according to claim 4, which is characterized in that the measuring unit includes: the first processing
Device, the first driving pulse circuit module, the first inductor, first receive amplification module and first communication module；
The first processor is connect with the first driving pulse circuit module, the first driving pulse circuit module and institute
State waveguide filament connection；
The first processor is connect with the first reception amplification module, and described first receives amplification module and first sense
Device is answered to connect, the head end of the waveguide filament is arranged in first inductor, is transmitted to the waveguide filament head for incuding detection
The torsional wave impulse wave at end；
The first processor is connect with the first communication module.
6. magnetostriction liquidometer according to claim 5, which is characterized in that the main control unit includes: second processing
Device and second communication module；
The second processor is connect with the second communication module；
The second communication module is connect with the first communication module, to realize that the main control unit and the measuring unit connect
It connects.
7. magnetostriction liquidometer according to claim 5, which is characterized in that first inductor uses induction coil
Or piezoelectric ceramics.
8. magnetostriction liquidometer according to claim 4, which is characterized in that the measuring unit includes: the second excitation
Pulse circuit module, second receive amplification module and the second inductor；
Wherein, the second driving pulse circuit module is connect with the waveguide filament；
The second reception amplification module is connect with second inductor, and the waveguide filament is arranged in second inductor
Head end, the torsional wave impulse wave for being transmitted to the waveguide filament head end for incuding detection.
9. magnetostriction liquidometer according to claim 8, which is characterized in that the main control unit includes: third processing
Device, transmitting gating switch and reception gating switch；
The third processor is connect with the transmitting gating switch and the reception gating switch respectively, and the transmitting gating is opened
Pass connect respectively with the second driving pulse circuit module of each measuring unit, the reception gating switch respectively with
Described the second of each measuring unit receives amplification module connection.
10. magnetostriction liquidometer according to claim 8, which is characterized in that second inductor uses the line of induction
Circle or piezoelectric ceramics.
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| CN201920081843.7U CN209296106U (en) | 2019-01-17 | 2019-01-17 | A kind of magnetostriction liquidometer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540266A (en) * | 2019-01-17 | 2019-03-29 | 北京锐达仪表有限公司 | A kind of magnetostriction liquidometer and level measuring method |
| CN111307027A (en) * | 2020-02-28 | 2020-06-19 | 北京纳米能源与系统研究所 | Electromechanical integrated self-powered position sensing device and fluid flow sensor |
| CN113670415A (en) * | 2021-07-20 | 2021-11-19 | 北京锐达仪表有限公司 | Multi-sensor magnetostrictive liquid level meter and liquid level detection method |
-
2019
- 2019-01-17 CN CN201920081843.7U patent/CN209296106U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540266A (en) * | 2019-01-17 | 2019-03-29 | 北京锐达仪表有限公司 | A kind of magnetostriction liquidometer and level measuring method |
| WO2020147240A1 (en) * | 2019-01-17 | 2020-07-23 | 北京锐达仪表有限公司 | Magnetostrictive liquid level meter and liquid level measurement method |
| CN109540266B (en) * | 2019-01-17 | 2023-11-07 | 北京锐达仪表有限公司 | Magnetostrictive liquid level meter and liquid level measurement method |
| US11933656B2 (en) | 2019-01-17 | 2024-03-19 | Beijing Connetech Electronics Technology Co., Ltd. | Magnetostrictive liquid level meter using multiple waveguide wires and liquid level measurement method thereof |
| CN111307027A (en) * | 2020-02-28 | 2020-06-19 | 北京纳米能源与系统研究所 | Electromechanical integrated self-powered position sensing device and fluid flow sensor |
| CN113670415A (en) * | 2021-07-20 | 2021-11-19 | 北京锐达仪表有限公司 | Multi-sensor magnetostrictive liquid level meter and liquid level detection method |
| CN113670415B (en) * | 2021-07-20 | 2023-09-19 | 北京锐达仪表有限公司 | Multi-sensor magnetostrictive liquid level meter and liquid level detection method |
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