CN206208315U - A kind of magneto-electric water meter - Google Patents
A kind of magneto-electric water meter Download PDFInfo
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- CN206208315U CN206208315U CN201621283733.1U CN201621283733U CN206208315U CN 206208315 U CN206208315 U CN 206208315U CN 201621283733 U CN201621283733 U CN 201621283733U CN 206208315 U CN206208315 U CN 206208315U
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Abstract
The application provides a kind of magneto-electric water meter, including impeller, the first magnetoresistive element, the second magnetoresistive element, coil, the first circuit and controller unit, magnet is provided with impeller, magnet is driven to rotate during wheel rotation, and coil, the first magnetoresistive element and the second magnetoresistive element are arranged on impeller outer, coil cuts the magnetic induction line of magnet, and is the first electric impulse signal by the first circuit conversion；First magnetoresistive element and the second magnetoresistive element cut the magnetic induction line of magnet, produce the first magnetic resistance electric signal and the second magnetic resistance electric signal, so that controller determines the flow of water according to the number of the first electric impulse signal, the first magnetic resistance electric signal or the second magnetic resistance electric signal, the collection of water is realized.The utility model uses magnet ledger line circle and two counting modes of magnetoresistive element, because the power consumption of magnetoresistive element is smaller for the power consumption of coil, so as to smaller relative to the magneto-electric water meter power consumption of two coils in the prior art.
Description
Technical field
The utility model is related to water consumption measurement technical field, more particularly to a kind of magneto-electric water meter.
Background technology
Water meter is a kind of device of the usage amount for measuring water.The user terminal of running water is common in, its numerical value is used to calculate water
The foundation taken.The usual overall measurement unit of water meter is cubic feet (ft3) or cubic meter (m3)。
Conventional water meter is mechanical water meter, typically by several portions such as impeller, turbine worm transmission mechanism, counter, display code-discs
It is grouped into.Impeller is located in current, and when water flows in the duct, the blade in water impact impeller wheel week produces torque, makes impeller
Rotated under the promotion of current.After impeller rotation, the vertical rotary of impeller is converted into horizontally rotating and passed by turbine worm mechanism
The transmission mechanism of counter is passed, rotating speed is carried out no-load voltage ratio deceleration by transmission mechanism, is ultimately transferred to counter code disc and is shown.
But conventional water meter often occurs that the screw mechanism of turbine worm is stuck, it is impossible to the situation of normal operation, so as to lead
Water meter is caused to count problem that is inaccurate or not counting.
A kind of magneto-electric water meter is provided in the prior art, is counted using two coil cutting magnetic induction lines, but its power consumption
It is larger.
Utility model content
In view of this, the utility model provides a kind of magneto-electric water meter, is carried out with solving magneto-electric water meter in the prior art
During counting, the larger problem of two coil power dissipations.
To achieve the above object, the utility model provides following technical scheme：
A kind of magneto-electric water meter, including impeller, the first magnetoresistive element, the second magnetoresistive element, coil, the first circuit and control
Device unit；
The impeller includes multiple blades, impeller axle and magnet, and the magnet is located at one of blade of the impeller
On, and along the impeller direction of principal axis, it is arranged on the edge of the blade；
The coil is located at the impeller outer, in the wheel rotation, cutting the magnetic induction line of the magnet, is formed
Induced electromotive force；
The input of first circuit is connected with the coil, the sensing that first circuit will be produced on the coil
Electromotive force is converted into the first electric impulse signal；
First magnetoresistive element is located at the impeller outer, in the wheel rotation, cutting the magnetic of the magnet
Sense line, produces magnetic resistance change rate, and generate the first magnetic resistance electric signal；
Second magnetoresistive element is located at the impeller outer, in the wheel rotation, cutting the magnetic of the magnet
Sense line, produces magnetic resistance change rate, and generate the second magnetic resistance electric signal；
The controller unit is connected with the output end of first circuit, and with first magnetoresistive element and described
Two magnetoresistive elements are connected, for according to the individual of first electric impulse signal, the first magnetic resistance electric signal or the second magnetic resistance electric signal
Number determines the flow of water, with the purpose for realizing counting water.
Preferably, along on the direction of the impeller axle on the blade, the magnet is located at the blade
It is middle.
Preferably, in the plane perpendicular to the impeller axle, the projection of the coil is located at the motion rail of the magnet
In mark projection, and the coil is located at the side of the close described magnet of the impeller.
Preferably, in the plane perpendicular to the impeller axle, first magnetoresistive element and second magnetoresistive element
Projection positioned at the magnet movement locus projection on, and first magnetoresistive element, second magnetoresistive element with it is described
Coil is located at the same side of the impeller.
Preferably, in the plane perpendicular to the impeller axle, when the projection weight of projection and the coil of the magnet
During conjunction, the distance between the coil and described magnet scope are 4mm-6.5mm, including endpoint value.
Preferably, it is described to be arranged on other blades of the impeller without magnet also including without magnet, for the magnetic
Body counterweight so that the impeller keeps balance.
Preferably, also including second circuit and tertiary circuit, wherein, the second circuit and tertiary circuit are filtered electrical
Road, the controller unit is connected by the second circuit with first magnetoresistive element, and the controller unit passes through institute
Tertiary circuit is stated to be connected with second magnetoresistive element.
Preferably, the magnet is neodymium iron boron magnetic body.
Preferably, the coil is copper material enamel-covered wire.
Preferably, the controller unit is single-chip microcomputer or micro-control unit.
Understood via above-mentioned technical scheme, the magneto-electric water meter that the utility model is provided, including impeller, the first magnetic resistance unit
Part, the second magnetoresistive element, coil, the first circuit and controller unit, are provided with magnet, during wheel rotation on the impeller
Magnet is driven to rotate, and coil, the first magnetoresistive element and the second magnetoresistive element are arranged on impeller outer, coil cuts the magnetic strength of magnet
Line, and be the first electric impulse signal by the first circuit conversion；First magnetoresistive element and the second magnetoresistive element cut the magnetic of magnet
Sense line, produce the first magnetic resistance electric signal and the second magnetic resistance electric signal so that controller according to first electric impulse signal,
The number of the first magnetic resistance electric signal or the second magnetic resistance electric signal determines the flow of water, realizes the collection of water.The utility model is adopted
It is contactless impeller counting has been reached with magnet ledger line circle and the counting mode of two magnetoresistive elements, efficiently avoid
Turbine worm mechanism blocks, and solves the problems, such as that water meter counts inaccurate or on the basis of not counting, due to the work(of magnetoresistive element
Consumption is smaller for the power consumption of coil, so that the magneto-electric water meter that the utility model is provided is relative in the prior art two
The magneto-electric water meter power consumption of individual coil is smaller.
Further, because the integrated level of magnetoresistive element is higher, when being counted using magnetoresistive element, relative to existing
It is only capable of being counted using coil in technology, it is necessary to the external structure such as amplifying circuit, after amplifying circuit amplifies signal, then receives
To mechanical oscillation, the counting effect of magneto-electric water meter can be influenceed, and the integrated level of magnetoresistive element is higher, its antijamming capability, especially
Its resistance to mechanical vibration ability is stronger, therefore, the counting of the magneto-electric water meter that the utility model is provided is more accurate.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is embodiment of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to the accompanying drawing for providing.
The magneto-electric water meter structure schematic diagram that Fig. 1 is provided for the embodiment of the utility model one；
The blade wheel structure of the magneto-electric water meter that Fig. 2 is provided for the embodiment of the utility model one and the stravismus schematic diagram of coil；
Fig. 3 is that the blade wheel structure of the magneto-electric water meter shown in Fig. 2 and coil show along the structure of the plane perpendicular to impeller axle
It is intended to；
Fig. 4 is that the blade wheel structure of the magneto-electric water meter shown in Fig. 2 and coil show along the structure of the plane parallel to impeller axle
It is intended to；
The magneto-electric water meter structure schematic diagram that Fig. 5 is provided for another embodiment of the utility model；
Impeller location schematic diagram during the positive long-pending or negative product metering that Fig. 6 A-6E are provided for the utility model；
Two magnetoresistive elements and the timing diagram of the output electric pulse signal of coil that Fig. 7 is provided for the utility model.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
In the prior art, due to traditional mechanical water meter, during the range of motion of turbine worm and transmission mechanism,
Because turbine worm must coordinate with impeller, so turbine worm leaching for a long time is in a fluid, when the impurity in fluid is more or mud
When husky content is larger, silt may be filled in the screw mechanism of turbine worm, make screw mechanism stuck, it is impossible to run well,
In turn result in water meter to count inaccurate or do not count, so as to provide a kind of magneto-electric water meter, realize that water is counted using two coils,
But power consumption is larger in itself due to coil, and, it is necessary to more outer when the induced electromotive force that coil is produced is converted into electric impulse signal
Portion's circuit realiration, so as to cause the power consumption of whole magneto-electric water meter larger.
Based on this, the utility model provides a kind of magneto-electric water meter, as shown in figure 1, including：Impeller 1, the first magnetoresistive element
2nd, the second magnetoresistive element 3, coil 4, the first circuit 5 and controller unit 6；The impeller includes multiple blades 12, impeller axle 13
With magnet 111, magnet 111 is located on one of blade 12 of impeller, and along the bearing of trend of impeller axle 13, is arranged on blade
12 edge.It should be noted that the impeller can also include impeller bracket (not shown in the present embodiment accompanying drawing), the leaf
Wheel support plays support and positioning action, and the impeller is fixed in the shell of water meter.Impeller and impeller axle cooperate, in water
Impetus under carry out free rotation.Coil 4 is located at outside impeller 1, and in wheel rotation, cutting magnet 111
Magnetic induction line, forms induced electromotive force.The input of the first circuit 5 is connected with coil 4, the sense that the first circuit 5 will be produced on coil 4
Electromotive force is answered to be converted into the first electric impulse signal；First magnetoresistive element 2 is located at outside impeller 1, for when impeller 1 is rotated, cutting
The magnetic induction line of magnet 111, produces magnetic resistance change rate, and generate the first magnetic resistance electric signal；Second magnetoresistive element 3 is located at outside impeller 1, is used
In when impeller 1 is rotated, the magnetic induction line of magnet 111 is cut, produce magnetic resistance change rate, and generate the second magnetic resistance electric signal；Controller
Unit 6 is connected with the output end of the first circuit 5, and is connected with the first magnetoresistive element 2 and the second magnetoresistive element 3, for according to
The number of one electric impulse signal, the first magnetic resistance electric signal or the second magnetic resistance electric signal determines the flow of water, to realize to watermeter
Several purposes.
The present embodiment produces induced electromotive force using conductor coils according to Faraday's electromagnetic induction law in variation magnetic field
Principle be designed, Faraday's electromagnetic induction law formula is as follows：E=n* ΔΦs/Δ t, wherein E represents induced electromotive force
(unit is V), n is number of inductive coil turns, and ΔΦ/Δ t is the rate of change of magnetic flux, and water jet propulsion impeller is utilized in the present embodiment
Rotate, magnet is fixed on impeller, and coil is fixed on the side of impeller outer, and when wheel rotation, magnet follows wheel rotation, produce
The change in magnetic field, induction coil produces induced electromotive force to the magnetic field for changing, and signal and numeral are simulated by the first circuit
The conversion of signal, obtains the first electric impulse signal, after controller unit obtains first electric impulse signal, according to pipe diameter
And revolution, the flow of current is calculated by prefabricated algorithm, so as to realize that water is counted.Similarly, the first magnetoresistive element
With the second magnetoresistive element when magnetic field changes, magnetoresistive element is influenceed by magnetic force, and magnetic resistance diminishes, and produces magnetic resistance electric signal,
So as to be gathered by controller unit, according to pipe diameter and revolution, the flow of current is calculated by prefabricated algorithm, so that
Realize that water is counted.
It should be noted that position of the magnet on blade, does not limit this in the present embodiment.In order to ensure impeller leaf
After increasing magnet on piece, the motion influence on impeller is smaller, and ensures magnet when the rotation of blade rotates, and coil cuts magnetic
Body magnetic induction line is enough to cause the induced electromotive force of coil, and can be electric impulse signal by the first circuit conversion, alternatively, please join
See Fig. 2 and Fig. 3, along on the direction of impeller axle 13 in the present embodiment, magnet 111 is located at the centre position of blade 12, makes
Obtain in impeller rotary course, the momentum that magnet is obtained, the Effect of Rotation to impeller is smaller.Simultaneously so that magnet rotates position
Put change and cause the change of the magnetic flux in coil enough, and be converted into the first electric pulse letter that can be sensed by controller unit
Number.
Further, the weight for increasing magnet will necessarily increase the weight of blade, so as to influence promotion of the current to blade
Power, is the preponderance for avoiding magnet in the present embodiment, and the motion influence on impeller is excessive, and alternatively, the magnet is only set
In the marginal position of the side of blade, in order to form induced electromotive force and influence the first magnetoresistive element and the second magnetic on coil
The magnetic resistance size of resistance element.In order that obtaining coil 4 can easily cut the magnetic induction line of magnet 111, in the present embodiment alternatively,
In the plane of impeller axle 13, the projection of coil 4 is projected positioned at the movement locus of magnet 111, as shown in figure 3, and line
Circle 4 is located at the side of the close magnet 111 of the impeller.Likewise, the first magnetoresistive element 2 and the second magnetoresistive element 3 and coil 4
Setting it is similar, positioned at the side of the close magnet 111 of impeller, and in the plane perpendicular to impeller axle 13, the first magnetic resistance unit
The projection of the magnetoresistive element 3 of part 2 and second is in the movement locus projection of magnet 111.It is described perpendicular to impeller in the present embodiment
The plane of axle 13, is plane as shown in Figure 3.As shown in figure 3, magnet 111 is circle with the movement locus that impeller rotates.First
Magnetoresistive element 2, the second magnetoresistive element 3 and coil 4 are arranged on the optional position of the circus movement track, if perpendicular to
In the plane of impeller axle 13, the position of the first magnetoresistive element 2, the second magnetoresistive element 3 and coil 4 does not overlap, the present embodiment
In this is not limited.Alternatively, it is further ensured that coil 4 can smoothly and easily cut the magnetic induction line of magnet 111, this implementation
Need the distance between coil 4 and magnet 111 more near better in example, but consider the shadow that the impurity in current rotates to impeller simultaneously
Ring, in the present embodiment in the plane perpendicular to impeller axle 13, i.e., in plane as shown in Figure 3, projection and line when magnet 111
When the projection of circle 2 overlaps, the distance between coil 2 and magnet 111 scope are 4mm-6.5mm, including endpoint value.In addition, optional
, when the projection of magnet 111 overlaps with the projection of the first magnetoresistive element 2 and the second magnetoresistive element 3, the He of the first magnetoresistive element 2
The distance between second magnetoresistive element 3 and magnet 111 scope are also 4mm-6.5mm, including endpoint value.
For convenience of understanding, the side view of impeller and coil 4 is provided in the present embodiment, as shown in figure 4, when the throwing of magnet 111
When shadow overlaps with the projection of coil 4, the distance between coil 4 and magnet 111 distance shown in the L in Fig. 4.It is further preferable that
Ultimate range between coil 4 and magnet 111 is 6.5mm, and coil 4 can be passed through in order to the impurity or gravel in current
Hole and impeller blade between, and then the space between gravel or impurity clogging impeller blade and coil is avoided, influence impeller
Normal rotation, cause to count the position of the inaccurate or problem that does not count, the first magnetic resistance unit and the second magnetoresistive element and coil
Distribution is similar, is 6.5mm with the ultimate range between magnet 111, and this is not repeated in the present embodiment.
It is that in guarantee impeller rotary course, can at the uniform velocity be rotated as far as possible under water jet propulsion, the present embodiment in the present embodiment
The magneto-electric water meter of offer also includes without magnet, as shown in Fig. 3 without magnet 112, is served only for herein without magnet 112 and magnet
111 carry out counterweight, the center of gravity of impeller is located at impeller axle center of gravity, so that balance is kept, the magnetic field without influenceing magnet.
It should be noted that not being defined to the number without magnet in the present embodiment, two can be included, such as schemed
Shown in 3, when the blade of impeller is 6, the number without magnet can be 2, two without being spaced an impeller between magnet 112,
And an impeller is spaced with magnet respectively, and the setting of the position without magnet 112 can be identical with the position setting of magnet 111,
Positioned at a marginal position of blade.Number without magnet can also be one, positioned at relative with the blade where magnet 111
On blade.Be can also be without magnet and one is respectively provided with each blade outside the blade where magnet without magnet, it is necessary to illustrate
, the excessive overall weight that may increase impeller without magnet is increased on impeller, the sensitivity to impeller rotation is caused
Influence, i.e., when having compared with weep, impeller possibly cannot be rotated under the promotion of current, therefore, to ensure water meter in water
When stream is smaller, also can accurately rotate and be counted, the number without magnet needs to be configured according to actual conditions in the present embodiment,
As long as counterweight is disclosure satisfy that, and it is smaller on the rotation sensitivity influence of impeller.
Separately, the material in the present embodiment to magnet 111 is not limited, preferably permanent magnet, is more preferably neodymium iron boron
Magnet.Material without magnet is not also defined, as long as counterweight effect can be played.The material of the present embodiment coil 4
Matter is enamel-covered wire, and enamel-covered wire is made up of conductor and insulating barrier two parts, and copper cash enamel-covered wire, aluminum steel are divided into according to the species of conductor
Enamel-covered wire and alloy wire enamel-covered wire, the material of coil 4 is copper cash enamel-covered wire, its advantage of lower cost in the present embodiment preferably,
And stability is stronger.The present embodiment coil uses O-shaped coil, by sealing in the electronics bay of magneto-electric water meter.
In addition, the concrete form in the present embodiment to the first magnetoresistive element and the second magnetoresistive element is not limited, optionally,
First magnetoresistive element and the second magnetoresistive element are magnetoresistive transducer.
The magneto-electric water meter provided in the present embodiment counts operation principle：
Fig. 1 is referred to, when the blade 12 with magnet 111 is moved near coil 4 in impeller, coil 4 can cut magnetic
The magnetic induction line of body 111, and electric current and induced electromotive force are produced, the first circuit 5 changes current signal or induced electromotive force signal
Into the first electric impulse signal, controller unit 6 is sent to, is recorded by controller unit 6；
When in impeller with magnet 111 blade 12 move to apart from coil 2 farther out when, coil 2 no longer cuts magnet 111
Magnetic induction line, thus no longer produce induced electromotive force and electric current.
When the blade 12 with magnet 111 is moved gradually near the first magnetoresistive element 2 or the second magnetoresistive element 3 in impeller
When, magnetic resistance is influenceed by the magnetic force of magnet, and magnetic resistance diminishes, and produces the first magnetic resistance electric signal and the second magnetic resistance electric signal, is sent to
Controller unit 6, is recorded by controller unit 6.
When the blade 12 with magnet 111 moves to distance the first magnetoresistive element 2 or the second magnetoresistive element 3 farther out in impeller
When, the first magnetoresistive element 2 or the second magnetoresistive element 3 no longer produce the first magnetic resistance electric signal and the second magnetic resistance electric signal.
Rotation, generation first electric impulse signal, first magnetic resistance telecommunications of the controller unit 6 according to record are not stopped with impeller
Number or the frequency of the second magnetic resistance electric signal judge the rotating speed of water velocity and impeller, further according to pipe diameter and revolution, by pre-
The algorithm of system is calculated the flow of current, so as to realize that water is counted.
Controller unit 6 is not limited in this example, as long as electric impulse signal record and computing function can be realized i.e.
Can, it is preferable that controller unit 6 is single-chip microcomputer or micro-control unit (Microcontroller Unit, MCU).
It should be noted that the first circuit is as shown in figure 5, including signal amplification circuit 51 and filter circuit in the present embodiment
52, be amplified for signal by signal amplification circuit 51 after producing induced electromotive force by coil, in order to subsequent controllers unit 6
It is acquired, signal is filtered by filter circuit 52, is accurately counted.First magnetoresistive element and the second magnetic resistance unit
The signal of part is enough to be gathered by controller unit, therefore, it does not need amplifying circuit, and filter circuit has been integrated with described
The inside of one magnetoresistive element and the second magnetoresistive element.
To strengthen the count accuracy of magneto-electric water meter, the utility model embodiment provides another magneto-electric water meter,
As shown in figure 5, the present embodiment also includes second circuit 7 and tertiary circuit 8 from unlike a upper embodiment in the present embodiment,
Wherein, second circuit 7 and tertiary circuit 8 are filter circuit, and controller unit 6 passes through the magnetoresistive element 2 of second circuit 7 and first
It is connected, controller unit 6 is connected by tertiary circuit 8 with the second magnetoresistive element 3.By increasing filtered electrical outside magnetoresistive element
Road, is further filtered to signal, so that the counting of magneto-electric water meter is more accurate.
The magneto-electric water meter that the present embodiment is provided includes impeller, the first magnetoresistive element, the second magnetoresistive element, coil, first
Circuit and controller unit, are provided with magnet on the impeller, drive magnet to rotate during wheel rotation, and coil, first
Magnetoresistive element and the second magnetoresistive element are arranged on impeller outer, and coil cuts the magnetic induction line of magnet, and is by the first circuit conversion
First electric impulse signal；First magnetoresistive element and the second magnetoresistive element cut the magnetic induction line of magnet, produce the first magnetic resistance electric signal
With the second magnetic resistance electric signal so that controller is according to first electric impulse signal, the first magnetic resistance electric signal or the second magnetic
The number for hindering electric signal determines the flow of water, realizes the collection of water.The utility model uses magnet ledger line circle and two magnetic resistance
The counting mode of element, it is contactless impeller counting has been reached, the blocking of turbine worm mechanism is efficiently avoid, solve
Water meter is counted on the basis of the inaccurate or problem that does not count, due to magnetoresistive element power consumption for the power consumption of coil more
Plus it is small, so that the magneto-electric water meter that the utility model is provided is relative to two magneto-electric water meter power consumptions of coil in the prior art more
It is small.Obtained by inventor's experiment, two electric currents of the magneto-electric water meter of coil are 100 μ A or so, and what the present embodiment was provided
The electric current of two magnetoresistive elements and a magneto-electric water meter for coil only has 40 μ A or so, it is seen then that its power consumption can be substantially reduced,
So as to energy saving.
Using two magnetoresistive transducers and the road circuit realiration tally function of coil three in the present embodiment, when two magneto-resistive transducings
When one of device or coil break down, trouble-free structure in addition, under the influence of the magnetic force of magnet, moreover it is possible to proceed water
Flow accounting, so as to ensure that the count accuracy of magneto-electric water meter.
Further, because the integrated level of magnetoresistive element is higher, when being counted using magnetoresistive element, relative to existing
It is only capable of being counted using coil in technology, it is necessary to the external structure such as amplifying circuit, after amplifying circuit amplifies signal, then receives
To mechanical oscillation, the counting effect of magneto-electric water meter can be influenceed, and the integrated level of magnetoresistive element is higher, its antijamming capability, especially
Its resistance to mechanical vibration ability is stronger, therefore, the counting of the magneto-electric water meter that the utility model is provided is more accurate.
In addition, the magneto-electric water meter that the present embodiment is provided using coil when being counted, its counting principle is electromagnetism sense
Principle is answered, during coil cutting magnet magnetic induction line, induced electromotive force is produced in coil, the circuit of impeller outer is according to induction electric
Gesture, obtains electric impulse signal, so as to be calculated water-carrying capacity.If strong magnetic disturbance is subject to, in the situation that strong magnetic disturbance magnetic force is constant
Under, coil can continue to cutting magnet magnetic induction line and carry out current counting, therefore, the magneto-electric water meter provided in the present embodiment can also
Enough resist strong magnetic disturbance.
It should be noted that mechanical water meter of the prior art can only carry out positive stored count, it is impossible to carry out burden meter meter
Number, the magneto-electric water meter provided in the present embodiment can carry out positive stored count, while negative stored count can also be realized.Please join
As shown in Fig. 6 A-6E and Fig. 7, wherein, Fig. 6 A-6E are the several special position view in impeller rotary course；Fig. 7 is stream
In amount gatherer process, the timing diagram of the output electric pulse signal of two magnetoresistive elements and coil.
Specifically, Detailed flow collecting work principles illustrated is as follows：
When impeller clockwise movement is to Fig. 6 location As, magnet 111 apart from magnetoresistive element and coil 4 farther out, coil, two
Magnetoresistive element will not produce electric pulse to change output, and two magnetic resistance and the collection of the tunnel of coil three keep high level output, referring to
The d areas of Fig. 7 waveform timing charts.
When impeller clockwise movement is to Fig. 6 B locations, magnet streaks the first magnetoresistive element 2, the first magnetoresistive element 2 is subject to
The magnetic force influence of magnet, magnetic resistance diminishes, and produces electric signal to drag down, at this moment magnet apart from the magnetoresistive element 3 of coil 4 and second farther out,
Coil 4 and second magnetoresistive element, 3 signals are unchanged, a areas of waveform timing chart shown in Figure 7.
When impeller continues clockwise movement to Fig. 6 location of C, the first magnetoresistive element 2 and the second magnetoresistive element 3 are subject to magnet
Magnetic force influence, magnetic resistance diminishes, and the first magnetoresistive element 2 is remained stationary state, and the second magnetoresistive element 3 produces electric signal to drag down output,
At this moment coil surrounding magnetic field change causes coil to produce induced electromotive force, by exporting low level signal after amplification and filtering, ginseng
B areas of waveform timing chart as shown in Figure 7.
Fig. 6 D positions are continued to rotate to when impeller is moved to, away from the first magnetoresistive element 2 and coil 4, coil 4 is slowly for magnet
No longer generation induced electromotive force, the first magnetoresistive element 2 and the Acquisition Circuit of coil 4 recover acquiescence high level output state, referring to
The c areas of waveform timing chart shown in Fig. 7, the second magnetoresistive element 3 is nearer apart from magnet, still maintains original low level state.
When impeller continues to rotate to Fig. 6 E positions, away from magnet, the changes of magnetic field of surrounding is or not coil 4 and two magnetoresistive elements
Substantially, acquiescence output high level state is kept.
Sequencing according to generation sequential judges the direction of the motion of impeller, from the first magnetoresistive element and the second magnetic resistance unit
The order of the generation pulse signal of part judges the rotation direction of impeller, carries out positive product metering or negative product metering；In the present embodiment
By the way of double magnetoresistive elements and 1 coil, metering collecting work is carried out, compared with prior art, magnetoresistive element integrated level
Compare high, oneself power consumption is low, 2 times of the lower power consumption of the power dissipation ratio coil of magnetic resistance.Other magnetoresistive element sensor easily receives strong magnetic
Field is attacked, and when there is high-intensity magnetic field to attack, metering collecting work is carried out using coil, when no high-intensity magnetic field is attacked, using double magnetic
Resistance carries out metering collecting work, so since by the way of pair magnetic resistance add 1 coil in the ability of anti-high-intensity magnetic field attack
Significant raising is obtained.
It should be noted that each embodiment in this specification is described by the way of progressive, each embodiment weight
Point explanation is all difference with other embodiment, between each embodiment identical similar part mutually referring to.
Also, it should be noted that herein, such as first and second or the like relational terms are used merely to one
Entity or operation make a distinction with another entity or operation, and between not necessarily requiring or implying these entities or operate
There is any this actual relation or order.And, term " including ", "comprising" or its any other variant be intended to contain
Lid nonexcludability is included, so that article or equipment including a series of key elements not only include those key elements, but also
Including other key elements being not expressly set out, or it is this article or the intrinsic key element of equipment also to include.Do not having
In the case of more limitations, the key element limited by sentence "including a ...", it is not excluded that in the article including above-mentioned key element
Or also there is other identical element in equipment.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality
Type.Various modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can in other embodiments be realized in the case where spirit or scope of the present utility model are not departed from.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (10)
1. a kind of magneto-electric water meter, it is characterised in that including impeller, the first magnetoresistive element, the second magnetoresistive element, coil, first
Circuit and controller unit；
The impeller includes multiple blades, impeller axle and magnet, and the magnet is located on one of blade of the impeller, and
Along the impeller direction of principal axis, the edge of the blade is arranged on；
The coil is located at the impeller outer, in the wheel rotation, cutting the magnetic induction line of the magnet, forms sensing
Electromotive force；
The input of first circuit is connected with the coil, the induction electric that first circuit will be produced on the coil
Gesture is converted into the first electric impulse signal；
First magnetoresistive element is located at the impeller outer, in the wheel rotation, cutting the magnetic induction line of the magnet,
Magnetic resistance change rate is produced, and generates the first magnetic resistance electric signal；
Second magnetoresistive element is located at the impeller outer, in the wheel rotation, cutting the magnetic induction line of the magnet,
Magnetic resistance change rate is produced, and generates the second magnetic resistance electric signal；
The controller unit is connected with the output end of first circuit, and with first magnetoresistive element and second magnetic
Resistance element is connected, true for the number according to first electric impulse signal, the first magnetic resistance electric signal or the second magnetic resistance electric signal
The flow of water is determined, with the purpose for realizing counting water.
2. magneto-electric water meter according to claim 1, it is characterised in that along perpendicular to the impeller axle on the blade
Direction on, the magnet be located at the blade centre.
3. magneto-electric water meter according to claim 2, it is characterised in that in the plane perpendicular to the impeller axle, institute
The projection of coil is stated in the movement locus projection of the magnet, and the coil is located at the close described magnet of the impeller
Side.
4. magneto-electric water meter according to claim 3, it is characterised in that in the plane perpendicular to the impeller axle, institute
The projection for stating the first magnetoresistive element and second magnetoresistive element is projected positioned at the movement locus of the magnet, and described first
Magnetoresistive element, second magnetoresistive element are located at the same side of the impeller with the coil.
5. magneto-electric water meter according to claim 4, it is characterised in that in the plane perpendicular to the impeller axle, when
When the projection of the magnet overlaps with the projection of the coil, the distance between the coil and described magnet scope are 4mm-
6.5mm, including endpoint value.
6. the magneto-electric water meter according to claim 1-5 any one, it is characterised in that also including without magnet, the nothing
Magnet is arranged on other blades of the impeller, for the magnet counterweight so that the impeller keeps balance.
7. magneto-electric water meter according to claim 6, it is characterised in that also including second circuit and tertiary circuit, wherein,
The second circuit and tertiary circuit are filter circuit, and the controller unit passes through the second circuit and first magnetic
Resistance element is connected, and the controller unit is connected by the tertiary circuit with second magnetoresistive element.
8. the magneto-electric water meter according to claim 1-5 any one, it is characterised in that the magnet is neodymium-iron-boron
Body.
9. the magneto-electric water meter according to claim 1-5 any one, it is characterised in that the coil is copper material enamel-cover
Line.
10. magneto-electric water meter according to claim 1, it is characterised in that the controller unit is single-chip microcomputer or micro-control
Unit processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621283733.1U CN206208315U (en) | 2016-11-25 | 2016-11-25 | A kind of magneto-electric water meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621283733.1U CN206208315U (en) | 2016-11-25 | 2016-11-25 | A kind of magneto-electric water meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206208315U true CN206208315U (en) | 2017-05-31 |
Family
ID=58747949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621283733.1U Withdrawn - After Issue CN206208315U (en) | 2016-11-25 | 2016-11-25 | A kind of magneto-electric water meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206208315U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441466A (en) * | 2016-11-25 | 2017-02-22 | 北京奥特美克科技股份有限公司 | Electromagnetic water meter |
| CN108088507A (en) * | 2017-11-28 | 2018-05-29 | 中国计量大学 | A built-in flow detection device |
| CN111442811A (en) * | 2020-03-17 | 2020-07-24 | 河北建投水务投资有限公司 | Intelligent data acquisition and self-power generation integrated terminal and method |
-
2016
- 2016-11-25 CN CN201621283733.1U patent/CN206208315U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441466A (en) * | 2016-11-25 | 2017-02-22 | 北京奥特美克科技股份有限公司 | Electromagnetic water meter |
| CN106441466B (en) * | 2016-11-25 | 2023-07-14 | 北京奥特美克科技股份有限公司 | Magneto-electric water meter |
| CN108088507A (en) * | 2017-11-28 | 2018-05-29 | 中国计量大学 | A built-in flow detection device |
| CN111442811A (en) * | 2020-03-17 | 2020-07-24 | 河北建投水务投资有限公司 | Intelligent data acquisition and self-power generation integrated terminal and method |
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