CN106323344A - Magneto-electric encoder and encoding signal generation method - Google Patents
Magneto-electric encoder and encoding signal generation method Download PDFInfo
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- CN106323344A CN106323344A CN201610825068.2A CN201610825068A CN106323344A CN 106323344 A CN106323344 A CN 106323344A CN 201610825068 A CN201610825068 A CN 201610825068A CN 106323344 A CN106323344 A CN 106323344A
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- moving magnet
- magnet
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- hall element
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
Abstract
The invention discloses a magneto-electric encoder and an encoding signal generation method. The magneto-electric encoder comprises a main code disk and a plurality of waveform induction generators. The main code disk includes a disk bottom and a disk wall, a rotating shaft is arranged in the center of the disk bottom, and a plurality of rows of moving magnets are embedded into the disk wall up and down. One waveform induction generator is arranged for each row of moving magnets. Each waveform induction generator is arranged at a position which is of the same height as the corresponding row of moving magnets and near the side, embedded with the moving magnets, of the disk wall. Each waveform induction generator includes a Hall element and a fixed magnet. When the main code disk drives the moving magnets to rotate about the rotating shaft, the moving magnets and the fixed magnets produce magnetic induction signals which are received by the Hall elements, and then, the Hall elements convert the received magnetic induction signals into encoding signals and output the encoding signals. There is no mechanical noise in the working process, the accuracy of program identification is improved, and the difficulty of program design is reduced. As there is no mechanical friction, the service life of the encoder is prolonged.
Description
Technical field
The present invention relates to encoder techniques field, particularly to a kind of magnetism encoder and coding signal generating method.
Background technology
Encoder is a kind of sensor that swing offset is converted into string number pulse signal, finally gives in order to logical
News, the signal form transmitting and storing, be therefore widely used in every field.Volume at present, in audio industry, in audio amplifier
Encoder used by regulation is mechanical encoder, but, there are two big defects in mechanical encoder: one is that mechanical encoder exists
Mechanicalness noise, mechanicalness noise can produce disturbing pulse, causes the identification error of program；Two to be because mechanical encoder be by machinery
Contact directly contacts, and produces relative motion to complete work, so the life-span of mechanical encoder can be limited because of mechanical friction
System.In sound equipment, use such mechanical encoder, on the one hand need complicated noise reduction algorithm to go to eliminate mechanicalness noise, add journey
The design difficulty of sequence；On the other hand, the restricted lifetime of mechanical encoder, also affect the service life of audio amplifier, reduce Consumer's Experience.
Summary of the invention
In view of the audio amplifier using mechanical encoder in prior art exists design difficulty and service life also by mechanical coding
The impact of device, the problem reducing Consumer's Experience, it is proposed that a kind of magnetism encoder of the present invention and coding signal generating method, with
Just solve or solve the problems referred to above at least in part.
According to an aspect of the invention, it is provided a kind of magnetism encoder,
Described magnetism encoder includes primary key dish and several waveform influence generators；
Described primary key dish includes the He Panbi that tries to get to the heart of a matter, and arranges a rotary shaft in described center of trying to get to the heart of a matter, on described Pan Bi
It is embedded with upper and lower some row's moving magnets；
Correspondence is often arranged moving magnet and is arranged a described waveform influence generator, and each described waveform influence generator is arranged on
The position of the embedded moving magnet side of contour with respective row moving magnet and close described Pan Bi, each described waveform influence generator
All include a Hall element and a fixed magnet, for when primary key dribbling move moving magnet rotate around rotary shaft time, dynamic magnetic
Ferrum and fixed magnet produce magnetic induction signal and are received by Hall element, and the magnetic induction signal of reception is converted into volume by Hall element
Code signal exports.
According to another aspect of the present invention, it is provided that a kind of coding signal generating method, the method includes:
Design a primary key dish, described primary key dish is included the He Panbi that tries to get to the heart of a matter, one rotation is set in described center of trying to get to the heart of a matter
Axle, embedded upper and lower some row's moving magnets on described Pan Bi；
Arranging several waveform influence generators, correspondence is often arranged moving magnet and is arranged a described waveform influence generator, will
Each described waveform influence generator is arranged on contour with respective row moving magnet and near described Pan Bi embedded moving magnet side
Position, a Hall element and a fixed magnet constitute each described waveform influence generator；
Described primary key dribbling being moved moving magnet rotate around described rotary shaft, moving magnet and fixed magnet produce magnetic induction letter
Number and received by Hall element, Hall element the magnetic induction signal of reception is converted into coding signal export.
In sum, the present invention is embedded with upper and lower some row's moving magnets on the primary key Pan Bi of magnetism encoder, and often row is dynamic
Magnet arranges a waveform influence generator, and waveform influence device includes a Hall element and a fixed magnet, works as primary key
Dribbling move moving magnet around rotary shaft rotate time, moving magnet and fixed magnet produce magnetic induction signal and also received by Hall element,
The magnetic induction signal of reception is converted into coding signal and exports by Hall element.Visible, the present invention utilizes magnetic induction principle, logical
Cross the Hall element in waveform influence generator to match with Magnet the magnetism encoder being designed to, do not exist
Mechanicalness noise, can improve the accuracy of procedure identification, reduces the difficulty of programming；There is no mechanical friction, improve encoder
Service life, this magnetism encoder is used in sound equipment, contribute to increase Consumer's Experience.
Accompanying drawing explanation
The front view of a kind of magnetism encoder that Fig. 1 provides for one embodiment of the invention；
The side view of a kind of magnetism encoder that Fig. 2 provides for one embodiment of the invention；
The waveform influence generator detail view of a kind of magnetism encoder that Fig. 3 provides for one embodiment of the invention；
The waveform characteristic schematic diagram of a kind of magnetism encoder that Fig. 4 provides for one embodiment of the invention；
The electric principle schematic of Hall element in a kind of magnetism encoder that Fig. 5 provides for one embodiment of the invention；
A kind of flow chart encoding signal generating method that Fig. 6 provides for another embodiment of the present invention.
Detailed description of the invention
The mentality of designing of the present invention is: the mechanical encoder used by volume adjusting in the audio amplifier of prior art, on the one hand
There is mechanicalness noise, cause the identification error of program, increase the difficulty of programming；On the other hand the life-span meeting of mechanical encoder
Because mechanical friction is restricted.For solving the problems referred to above, the present invention utilizes the principle of magnetic induction, embedded on the Pan Bi of primary key dish
Upper and lower some row's moving magnets, often arrange moving magnet in correspondence and arrange a waveform influence generator, and each waveform influence generator
It is arranged on the position of the embedded moving magnet side of contour with respective row moving magnet and close Pan Bi, when primary key armor turns around rotary shaft
Time dynamic, magnetic induction signal can be produced and magnetic induction signal is converted into coding signal exports.This magnetism encoder does not has machine
, the most there is not mechanical friction in tool noise.For making the object, technical solutions and advantages of the present invention clearer, will use real below
Execute example to combine accompanying drawing embodiment of the present invention is described further in detail.
Embodiment one:
The front view of a kind of magnetism encoder that Fig. 1 provides for one embodiment of the invention.As it is shown in figure 1, the present embodiment
In magnetism encoder include primary key dish and two waveform influence generators；Wherein, primary key dish includes trying to get to the heart of a matter 110 and dish wall 120,
One rotary shaft 130 is set in 110 centers of trying to get to the heart of a matter, dish wall 120 is embedded with row's moving magnet 150 and lower row's moving magnet
160；And correspondence often arranges moving magnet and arranges a waveform influence generator 140, each waveform influence generator be arranged on accordingly
Arrange the position of the inner side of the embedded moving magnet of the contour and close dish wall 120 of moving magnet, and each waveform influence generator all wraps
Include a Hall element and fixed magnet one by one, when the dynamic upper row's moving magnet 150 of primary key dribbling and lower row's moving magnet 160 are around rotation
During axis of rotation, moving magnet and fixed magnet produce magnetic induction signal and are received by Hall element, the magnetic that Hall element will receive
Induced signal is converted into coding signal and exports.
In numerous impulse waveforms, the characterization rules of the waveform of square-wave pulse is stable, can be beneficial to distinguishing of program, so this
The signal that embodiment exports with magnetism encoder carries out example for square-wave pulse.Fig. 2 provide for one embodiment of the invention one
Plant the side view of magnetism encoder.As in figure 2 it is shown, the Magnet of upper row's moving magnet 150 and lower row's moving magnet 160 is square magnetic
Ferrum, the width of Magnet is L1, and spacing L3 between the Magnet of upper row's moving magnet and spacing L4 between the Magnet of lower row's moving magnet are equal
And equal to the width L1 of each moving magnet, so exportable two square-wave pulses of this magnetism encoder, high potential and low in waveform
Current potential respectively accounts for half period, meets the systematicness of square pulse.
It addition, in the actual application of encoder, usual program needs to judge the rotation direction of encoder, it is ensured that encoder
The accuracy of the coding signal of output, in the present embodiment, can be judged by the waveform that encoder exports.As in figure 2 it is shown,
Two row's moving magnets be level to moving and arranging, translocation distance L2 is the half of the width L1 of each moving magnet, so this magnetoelectricity compile
Two square-wave pulses of code device output are two square-wave pulses that there is phase contrast, the direction of the waveform generation that phase place is advanced, i.e.
The direction rotated for encoder, this just facilitates the program of encoder to judge the rotation direction of primary key dish, beneficially encoder correctly
Output coding signal.
The waveform influence generator detail view of a kind of magnetism encoder that Fig. 3 provides for one embodiment of the invention.Such as Fig. 3
Shown in, upper row's waveform influence generator that correspondence is arranged moving magnet 150 includes a Hall element 320 and a fixed magnet
310, Hall element 320 is arranged on the position between fixed magnet 310 and dish wall 120, it is ensured that can receive moving magnet and fix
Magnetic induction signal between Magnet；The side magnetic that fixed magnet 310 is relative with moving magnet 150 is contrary, is beneficial to produce magnetic induction
Signal；Similarly, lower row's waveform influence generator of corresponding lower row's moving magnet 160 include a Hall element 340 and one solid
Fixed magnet 330, Hall element 340 is arranged on the position between fixed magnet 330 and dish wall 120, fixed magnet 330 and moving magnet
160 relative side magnetic are contrary.The S pole of the extremely corresponding moving magnet of the N of such as fixed magnet, it is ensured that magnetic strength can be produced between the two
Induction signal.
In the present embodiment, for ensureing that two square-wave pulses of output exist phase contrast, upper row's waveform influence generator and under
Row's waveform influence generator is the most just to arranging, when primary key armor rotates around rotary shaft, and two waveform influence generators
The position of corresponding Pan Bi, in vertical direction in straight line, so could coordinate and move to two rows of moving and arranging in level
Magnet, produces two and has dephased square-wave pulse.
In actual applications, the primary key armor of digital encoder rotates around rotary shaft, when moving magnet turns to corresponding waveform
There is magnetic induction in the position in sensing generator, moving magnet and fixed magnet, the Hall element being positioned at centre receives this
Magnetic induction signal, and the magnetic induction signal of reception is converted into electronegative potential pulse signal exports, when moving magnet turns to not
The position of corresponding fixed magnet, there is not magnetic induction, can export high potential pulse signal in both, such primary key dish rotates one week,
Will export periodic square-wave pulse accordingly, the number of cycles of pulse signal is determined by the number often arranging moving magnet.
Illustrate the waveform characteristic of magnetism encoder in the present embodiment below in conjunction with the accompanying drawings.Fig. 4 is the present invention one
The waveform characteristic schematic diagram of a kind of magnetism encoder that embodiment provides.As shown in Figure 4, clockwise around rotary shaft when primary key armor
During rotation, first the right hand edge of lower row's moving magnet 160 turns to the left hand edge position of corresponding fixed magnet 330, and both start to send out
Magnetisation senses, and Hall element receives this magnetic induction, starts to export an electronegative potential pulse, until primary key dish turns over moving magnet
During the distance of width L1, the no longer corresponding fixed magnet 330 of the right hand edge of lower row's moving magnet 160, no longer produce magnetic induction, i.e. start
Output high potential pulse.Because the moving and arranging that upper row's moving magnet and lower row's moving magnet are gone up in horizontal direction, instantly arrange moving magnet
When the right hand edge of 160 turns to the left hand edge position of corresponding fixed magnet 330, what the right hand edge of upper row's moving magnet 150 was corresponding is
Pan Bi, is also not rotated to the left hand edge position of corresponding fixed magnet 310, and therefore both do not have magnetic induction, and Hall element will not
Receive this magnetic induction signal, corresponding output high potential pulse；When primary key dish is rotated further, turn over the half of moving magnet width L1
Distance when, the right hand edge of upper row's moving magnet 150 is just rotated into the left hand edge position of corresponding fixed magnet 310, both
Start to occur magnetic induction, Hall element to receive this magnetic induction signal, export an electronegative potential pulse, until primary key dish rotates dynamic
During the distance of the width L1 of Magnet, the no longer corresponding fixed magnet 320 of the right hand edge of lower row's moving magnet 150, no longer produce magnetic induction,
I.e. output high potential pulse.It follows that lower row's waveform influence generator produces arranges waveform influence generation in electronegative potential pulse ratio
Device produces electronegative potential pulse and wants advanced 1/4th period Δ T (i.e. the length of the half of moving magnet L1).Primary key dish rotates continuously,
Upper row's waveform influence generator produces square wave A, and lower row's waveform influence generator produces square wave B, and square wave B is than square wave A advanced four
/ mono-period Δ T.
But, it is generally the case that the rotation direction of primary key dish is unknown, and program needs the waveform exported by encoder to carry out
Judge.When after the square wave A obtained and square wave B, if square wave A falls behind 1/4th period Δ T than square wave B, it is judged as magnetoelectricity and compiles
The rotation direction of code device is clockwise；If square wave A is than 1/4th period Δ T before square wave B ultrasonic, it is judged that magnetism encoder
Rotation direction is counterclockwise.In the present embodiment, square wave A is than backwardness 1/4th period Δ T of waveform B, and then judges
The rotation direction of magnetism encoder is clockwise, thus realizes encoder sequence and judges the merit of primary key dish rotation direction
Energy.
The electric principle schematic of Hall element in a kind of magnetism encoder that Fig. 5 provides for one embodiment of the invention.As
Shown in Fig. 5, the Hall element 320 of output waveform A and the Hall element 340 of output waveform B are all connected with earth terminal 510 and power end
520, it is ensured that the normal work of Hall element.
It should be noted that, for ensureing that two square-wave pulses of output exist phase contrast, in an alternative embodiment of the invention
In, it is possible to upper row's moving magnet and lower row's moving magnet are arranged to the most just to position, upper row's waveform influence generator and lower row's ripple
Shape sensing generator is that level is to moving and arranging.The scheme of embodiment one is a preferred version.
Embodiment two:
A kind of flow chart encoding signal generating method that Fig. 6 provides for another embodiment of the present invention.As in figure 2 it is shown,
The method includes:
Step S610, designs a primary key dish, primary key dish is included the He Panbi that tries to get to the heart of a matter, arrange a rotation in center of trying to get to the heart of a matter
Axle, embedded upper and lower some row's moving magnets on Pan Bi.
Step S620, arranges several waveform influence generators, and correspondence is often arranged moving magnet and arranged a waveform influence generation
Device, is arranged on the position of the embedded moving magnet side of contour with respective row moving magnet and close Pan Bi by each waveform influence generator
Put, a Hall element and a fixed magnet constitute each waveform influence generator.
Step S630, moves primary key dribbling moving magnet and rotates around rotary shaft, and moving magnet and fixed magnet produce magnetic induction
Signal is also received by Hall element, Hall element by the magnetic induction signal of reception and magnetic induction signal is converted into coding signal enter
Row output.
In one embodiment of the invention, Hall element is arranged on the position between fixed magnet and dish wall, and sets
The side magnetic putting fixed magnet relative with moving magnet is contrary.
Further, by several shapes sensing generator the most just to setting；Will up and down different row's moving magnets be level to
Moving and arranging.
Specifically, embedded two rows moving magnet on Pan Bi, the translocation distance of two rows moving magnet is each dynamic magnetic
The half of the width of ferrum；The spacing of two rows moving magnet is equal and equal to the width of each moving magnet；According to coding signal
Periodic adjustment often arranges the number of moving magnet.
It should be noted that the process that realizes of coding signal generating method in embodiment two and the magnetoelectricity in embodiment one
The process that realizes that encoder produces coding signal is corresponding consistent, is the most described in detail, does not repeats them here.
In sum, the present invention is embedded upper and lower some row's moving magnets on the primary key Pan Bi of magnetism encoder, and correspondence is often arranged
Moving magnet arranges a waveform influence generator, and each waveform influence device includes a Hall element and a fixed magnet,
When primary key dribbling move moving magnet rotate around rotary shaft time, moving magnet and fixed magnet produce magnetic induction signal and by Hall element
Receiving, the magnetic induction signal of reception is converted into coding signal and exports by Hall element.Visible, the present invention utilizes magnetic induction former
Reason, is matched with Magnet the magnetism encoder being designed to by the Hall element in waveform influence generator, in the course of the work
There is not mechanicalness noise, the accuracy of procedure identification can be improved, reduce the difficulty of programming；There is no mechanical friction, improve
The service life of encoder；This magnetism encoder is used in sound equipment, contributes to increasing Consumer's Experience.
The above, the only detailed description of the invention of the present invention, under the above-mentioned teaching of the present invention, those skilled in the art
Other improvement or deformation can be carried out on the basis of above-described embodiment.It will be understood by those skilled in the art that above-mentioned tool
Body describes simply preferably explains the purpose of the present invention, and protection scope of the present invention should be as the criterion with scope of the claims.
Claims (10)
1. a magnetism encoder, it is characterised in that
Described magnetism encoder includes primary key dish and several waveform influence generators；
Described primary key dish includes the He Panbi that tries to get to the heart of a matter, and arranges a rotary shaft in described center of trying to get to the heart of a matter, embedded on described Pan Bi
There are upper and lower some row's moving magnets；
Correspondence is often arranged moving magnet and is arranged a described waveform influence generator, and each described waveform influence generator is arranged on and phase
Should arrange the position of the embedded moving magnet side of the contour and close described Pan Bi of moving magnet, each described waveform influence generator all wraps
Include a Hall element and a fixed magnet, for when primary key dribbling move moving magnet rotate around rotary shaft time, moving magnet and
Fixed magnet produces magnetic induction signal and is received by Hall element, and the magnetic induction signal of reception is converted into coding letter by Hall element
Number export.
2. magnetism encoder as claimed in claim 1, it is characterised in that described Hall element be arranged on described fixed magnet and
Position between described dish wall, the side magnetic that described fixed magnet is relative with described moving magnet is contrary.
3. magnetism encoder as claimed in claim 2, it is characterised in that several described waveform influence generators are the most right
Arrange.
4. magnetism encoder as claimed in claim 3, it is characterised in that the most different row's moving magnets are that level is to displacement row
Row.
5. magnetism encoder as claimed in claim 4, it is characterised in that be embedded with two rows on described Pan Bi and move magnetic
Ferrum, the translocation distance of two rows moving magnet is the half of the width of each moving magnet；The spacing of described two rows moving magnet
Equal and equal to the width of each moving magnet.
6. magnetism encoder as claimed in claim 1, it is characterised in that according to described magnetism encoder output coding signal
Periodic adjustment often arranges the number of moving magnet.
7. a coding signal generating method, it is characterised in that including:
Design a primary key dish, described primary key dish is included the He Panbi that tries to get to the heart of a matter, one rotary shaft is set in described center of trying to get to the heart of a matter,
Embedded upper and lower some row's moving magnets on described Pan Bi；
Arranging several waveform influence generators, correspondence is often arranged moving magnet and is arranged a described waveform influence generator, by each
Described waveform influence generator is arranged on the position of the embedded moving magnet side of contour with respective row moving magnet and close described Pan Bi
Put, a Hall element and a fixed magnet constitute each described waveform influence generator；
Described primary key dribbling being moved moving magnet rotate around described rotary shaft, moving magnet and fixed magnet produce magnetic induction signal also
Received by Hall element, Hall element by the magnetic induction signal of reception and magnetic induction signal is converted into coding signal carry out defeated
Go out.
Encode signal generating method the most as claimed in claim 7, it is characterised in that be arranged on by described Hall element described solid
Position between fixed magnet and described dish wall, and the side magnetic arranging described fixed magnet relative with described moving magnet is contrary.
Encode signal generating method the most as claimed in claim 8, it is characterised in that
By several described shapes sensing generator the most just to setting；
It is that level is to moving and arranging by the most different row's moving magnets.
Encode signal generating method the most as claimed in claim 9, it is characterised in that
Embedded two rows moving magnet on described Pan Bi, the translocation distance of two rows moving magnet is the width of each moving magnet
Half；The spacing of described two rows moving magnet is equal and equal to the width of each moving magnet；
Periodic adjustment according to coding signal often arranges the number of moving magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610825068.2A CN106323344A (en) | 2016-09-14 | 2016-09-14 | Magneto-electric encoder and encoding signal generation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610825068.2A CN106323344A (en) | 2016-09-14 | 2016-09-14 | Magneto-electric encoder and encoding signal generation method |
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| CN106323344A true CN106323344A (en) | 2017-01-11 |
Family
ID=57787687
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| CN201610825068.2A Pending CN106323344A (en) | 2016-09-14 | 2016-09-14 | Magneto-electric encoder and encoding signal generation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107026539A (en) * | 2017-05-22 | 2017-08-08 | 华中科技大学 | Integrated magnetic coder and Hall switch determine the external rotor permanent magnet synchronous machine of position |
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| CN1097865A (en) * | 1993-08-02 | 1995-01-25 | 陆济群 | Magnetic grid code disc |
| CN2837789Y (en) * | 2005-09-05 | 2006-11-15 | 周勇 | Magnetic encoding angle sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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