CN102795294A - Rotating disk type sensing element with uniform distribution of multiple magnetic blocks - Google Patents
Rotating disk type sensing element with uniform distribution of multiple magnetic blocks Download PDFInfo
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- CN102795294A CN102795294A CN2012102634591A CN201210263459A CN102795294A CN 102795294 A CN102795294 A CN 102795294A CN 2012102634591 A CN2012102634591 A CN 2012102634591A CN 201210263459 A CN201210263459 A CN 201210263459A CN 102795294 A CN102795294 A CN 102795294A
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Abstract
The invention provides a rotating disk type sensing element with uniform distribution of multiple magnetic blocks, belongs to the technical field of providing signals by magnetic induction and particularly relates to a technology for performing multi-point magnetic induction on a rotating part for providing control signals. A plurality of permanent magnets, which are annularly distributed, are fixedly arranged on a rotating disk, the magnetic polarities of the adjacent permanent magnets on one surface of the rotating disk are opposite, and the distribution way of the magnetic polarities of all the permanent magnets on the surface of the rotating disk is N pole, S pole, N pole...; and Halls are arranged in the positions near the permanent magnets. The rotating disk type sensing element has the advantages that, by utilizing the NS opposite distribution way of the magnetic polarities of the adjacent permanent magnets, the Halls can obtain rectangular wave signals and digital processing can be conveniently performed on the signals.
Description
Technical field
The invention belongs to magnetic induction the technical field of signal is provided, particularly relate on rotatable parts, carry out the technology that the magnetic induction of multiple spot position provides control signal.
Background technology
The Chinese patent 201020295192.0 " colluding pawl formula moment sensor " of Yebao Vehicle Material Industry's application discloses a kind of morpet and has used sensing device; Sensing device comprises that magnetic part and elastic component cooperate, and experience the sensing device of moment.After period of service was long, the elasticity modulus variation of elastic component will cause the control effect of transducing signal and controlled motor to change, and the power-assisted effect becomes and people's power-assisted need be mismatched.And complicated with the project organization of elastic component, manufacturing cost is high.
The Chinese patent 01201843.0 " electric assisted bicycle automatic checkout equipment " of University of Science & Technology, Beijing's application discloses a kind of electric assisted bicycle automatic checkout equipment; The no touch detection is pedaled power, speed and is turned to; This device is established magnetic sheet respectively on the inside and outside wheel disc of relative motion; On the interior wheel disc spring is arranged, use spring reset between the inside and outside wheel disc, survey electric signal that the magnetic sheet of relative motion on the inside and outside wheel disc produces with two Halls on the support and represent to pedal power, speed and turn to.
Shortcoming (1) is not durable with elastic component: after period of service was long, the elasticity modulus variation of elastic component will cause the control effect of transducing signal and controlled motor to change, and the power-assisted effect becomes and people's power-assisted need be mismatched, complex structure, and cost is high.
Shortcoming (2) sine wave output makes the magnetic sheet group Edge Distance can not be less than 4 centimetres; Be good with 5 centimetres generally, can establish magnetic sheet group number very little and make, man-machine cooperation is undesirable: each magnetic sheet group is identical; Then Hall output is that sinusoidal waveform is as control signal; As the control signal sinusoidal waveform certain peak valley difference must be arranged, because the magnetic sheet group of this patent needs certain-length to represent forward and reverse motion, be to establish 8 magnetic sheet groups at most on 20 centimetres the rolling disc circular trace at diameter; Be good with 5 generally, Hall just can have the sine wave signal of controllable function.That is to say that this technical scheme of 01201843.0 patent is used for morpet, magnetic sheet group limited amount is ended in 8, control signal very little, man-machine cooperation is undesirable.If but more than 8 magnetic sheet groups, when people's treadmill was very fast, the signal graph of Hall output was close to a horizon, this signal does not have controllable function, can not the control motor, when making it need power-assisted especially, lose assist function.
Shortcoming (3) signal blind zone reaches miter angle, needs really to can not get power-assisted the time power-assisted during startup: well-known, the people step on bicycle pedal on the summit moment minimum; From leaving 10-45 degree angle, summit is to need most power-assisted zone; But the angle between each magnetic sheet group of this patent is 45 degree, leaves summit 10-45 degree angular zone neither one magnetic sheet group at stretcher, also with regard to the neither one control signal; Consequently need most power-assisted the time, but the motor of morpet really can not power-assisted.
In a word, except that with the not durable complex structure again of elastic component, the fit structure characteristics of Yin Huoer and magnetic sheet group; The rotating disk size diameter is in 20 centimetres, and having placed restrictions on magnetic sheet group quantity is 8 groups, and magnetic sheet group number can not arbitrarily increase; Make man-machine cooperation undesirable; And can not get power-assisted when starting, the power-assisted demand with provide power-assisted not match, cyclist's traveling comfort is poor; As increasing magnetic sheet group quantity by force, its transducing signal loses the power operated control function again.
The Chinese patent 03264387.X " time type electric assisted bicycle sensor " of Wang Naikang application discloses without elastic component; Only with moving, fixed two rotating disks; Inlay two permanent magnetic steels above the Moving plate, inlay three Hall elements above the price fixing, bicycle pedal circles; Each Hall produces two pulses, and then three Hall elements produce six pulses.Divide folding can get three characteristics, four shortcomings are following:
Characteristics (1) are for obtaining six impulse singlas; Can only be each permanent magnetic steel same pole in one side: each Hall will produce two pulses; Then can only be the same one side that the same pole of two permanent magnetic steels is located at Moving plate, promptly in certain one side of Moving plate, two permanent magnetic steels all be the arctic or all be the South Pole.If in the same one side of Moving plate, a permanent magnetic steel is the arctic, another is the South Pole, and then pedal circles, and each Hall just can only produce a pulse, and three Halls just have only three pulses, and this does not just conform with this patent specification and has put down in writing.In order to increase pulse count, improve the control effect, can only be that each permanent magnetic steel same pole is in one side.
Characteristics (2) permanent magnetic steel is used to represent the pedal fixed position; Three Halls are represented the pedal travel position: because pedal and Moving plate are synchronous rotations; So with two cooresponding Moving plates of pedal on the fixing respectively permanent magnetic steels in two positions; Where some pedals change, and where then cooresponding permanent magnetic steel also changes; But have only commentaries on classics in the position that Hall is arranged, could send control signal through Hall, the power-assisted that the motor generation of commander's morpet needs is rotated.
The position of different period pedal travels during characteristics (3) can not be represented to circle because of a Hall; Then just can not be: the different periods of pedal in circling only with a Hall; The power-assisted demand there is very big difference; Embody the variation of this power-assisted demand, this patent is located at 180 degree angles respectively with three interior positions with three Halls, and two permanent magnetic steels are located at two pedal positions respectively; Pedal changes in the position that Hall is arranged, and this Hall representes that with regard to output signal pedal has arrived the position of this Huo Yuan.But there is following shortcoming again with a plurality of Halls.
These characteristics as the morpet sensor have three shortcomings:
Shortcoming (1) is represented the fixed position of two pedals respectively with two permanent magnetic steels that do not have an otherness; The turned position that just can only represent pedal with a plurality of Halls: two permanent magnetic steels do not have otherness; Advantage is the fixed position of representing two pedals respectively that can be regardless of left and right sides pin; Make its left and right sides human hair combing waste give birth to the power-assisted demand, can produce identical motor power-assisted effect; But shortcoming is a permanent magnetic steel itself just can not represent the turned position of pedal, and can only be located at the turned position that different angle positions is represented pedal with a plurality of Halls, thus can not be only with a Hall, and must use a plurality of Halls.
Shortcoming (2) can not be only with a Hall; And three Halls must cause three control signals that original segmentation error is arranged; Make the distortion of power-assisted demand model; Naturally it is inconsistent with the power-assisted demand to produce power-assisted output: no matter morpet is one or two motor, the transducing signal of its control motor can only just can reach the purpose of control motor with a transducing signal input electric machine controller; And this patent is with three Halls control motors, then must merge into one to three control signals of three Halls and could import electric machine controller after merging control signal.The parameter sensing of three Halls can not be the same; Particularly owing to after variation of ambient temperature, the period of service length; The parameter sensing of three Halls maybe be widely different, when its result causes identical power-assisted demand, the output of different Halls be different voltages; Cause motor to produce different power-assisted output, power-assisted output is inconsistent with the power-assisted demand; During in like manner identical power-assisted demand, the output of different Halls possibly be identical voltage again, cause motor to produce with a kind of power-assisted output, also produce power-assisted output and the inconsistent problem of power-assisted demand.
Shortcoming (3) merges control signal and is prone to produce signal drift; Merging control signal and electric machine controller are not matched; The distortion of power-assisted demand model: after variation of ambient temperature, period of service length, the parameter sensing of three Halls maybe be widely different, and three control signal point of connection of three Halls must change; The merging control signal that then identical power-assisted demand produces will produce the signal drift of segmenting; Merge control signal as a whole signal distortion that produces, i.e. power-assisted demand model distortion, any one that causes that electric machine controller selects three control signals for use all can produce power-assisted output and the inconsistent problem of power-assisted demand as benchmark.
Shortcoming sensing site can not arbitrarily increase; The sensing site very little; The motor operation is just not steady; Make people by bike feel very uncomfortable: owing to shortcoming (1) and shortcoming (2) are arranged all because Hall quantity causes greater than one, clearly Hall quantity is measured manyly more more, and shortcoming (1) and shortcoming (2) show serious more.So the morpet that this patent provides can only be to make people by bike feel the morpet that traveling comfort is very bad.
Shortcoming (5) signal blind zone reaches 42 degree angles, needs really to can not get power-assisted the time power-assisted during startup: well-known, the people step on bicycle pedal on the summit moment minimum; From leaving 10-45 degree angle, summit is to need most power-assisted zone; But the angle between each Hall of this patent is the 42.5-43.5 degree, leaves summit 10-42 degree angular zone neither one Hall at stretcher, also with regard to the neither one control signal; Consequently need most power-assisted the time, but the motor of morpet really can not power-assisted.
In a word; This patent is that because can only represent the turned position of pedal with a plurality of Halls, a plurality of control signals of a plurality of Halls must have original error with the technical scheme of a plurality of Hall control assistant modes; It merges control signal and is prone to produce signal drift again; All can cause the distortion of power-assisted demand model, i.e. the identical power-assisted demand of different time, but obtain different power-assisted effects; Hall quantity is measured many more more, and the distortion of power-assisted demand model is serious more, the quantity of having placed restrictions on you, the Hall small number and to produce the motor operation just not steady, make people by bike feel very uncomfortable, and can not get power-assisted when starting.Make it want the power-assisted demand model undistorted and want motor to operate steadily and always attend to one thing and lose sight of another on these two problems, can not get both.
Summary of the invention
The purpose of this invention is to provide the sensitive member that only obtains speed and acceleration signal with each permanent magnets on a Hall and the rolling disc; But be a kind of in induction region; Can increase permanent magnets quantity as far as possible, utilize the rolling disc displacement information to greatest extent, the sensitive member that output information is many.Use is measured moment without elastic component and other machinery on morpet, the morpet sensor that motor operates steadily is used sensitive member.
Design of the present invention is: but in a Hall receptive field, carry out magnetic polarity with identical a plurality of permanent magnets on the rolling disc and change, the signal that Hall is produced is a square wave, controllable function is stronger, more.For morpet, the quantity of information of expressing the motion of foot state is more.
Structure of the present invention is:
Many magnetic patch well-distributed rotating disc type sensitive member; Comprise a rolling disc 1 and many pieces of permanent magnets 2; Many pieces of permanent magnets 2 big or small identical, shape is identical, magnetic flow is identical; It is characterized in that: be set with many pieces of permanent magnets 2 on the rolling disc 1, the rounded equably track of these many pieces of permanent magnets 2 distributes, and promptly every piece of permanent magnets 2 is identical to the distance between identical, the adjacent two pieces of permanent magnets 2 of distance at circle center, circular rail trace 5 place; In certain one side of rolling disc 1, the magnetic polarity of adjacent permanent magnets 2 is opposite, and promptly simultaneously to go up the magnetic polarity distribution mode of whole permanent magnets 2 be the N utmost point, the S utmost point, the N utmost point, the S utmost point, the N utmost point, the S utmost point for certain of rolling disc 1
Also comprise a Hall 3, Hall 3 is positioned at certain one side of rolling disc 1, and Hall 3 is located at the position that also can experience permanent magnets 2 magnetic flow near permanent magnets 2, between Hall 3 and the permanent magnets 2 spacing is arranged; Hall 3 is the Halls that opposite magnetic polarities produced the square wave output signal.
Rolling disc 1 can be on-deformable plate of material such as the exhausted plate of plastic flagstone, high strength, copper coin, aluminium sheet.When using sensitive member, rolling disc 1 will rotate, and the center of rotation is exactly the center of 2 one-tenth annular arrangements distributions of a plurality of permanent magnets place circle.
A plurality of permanent magnets 2 are in annular arrangement 6 scopes; The purpose that becomes annular arrangement to distribute is only to experience with a Hall 3 state of kinematic motion of whole permanent magnets 2 on the rolling disc; Promptly experience the movement position and the speed of whole permanent magnets 2 on the rolling disc; And the variation of speed, or claim acceleration/accel, this Hall 3 just can be expressed the state of kinematic motion of permanent magnets 2 with a continuous electric signal; Because it is on the rolling disc 1 that whole permanent magnets 2 is separately fixed at rolling disc, then the continuous electric signal of Hall 3 generations just can be expressed the state of kinematic motion of rolling disc again.If be used to control other object to this continuous electric signal, this continuous electric signal is exactly a control signal.If be used to control the motor of morpet; Also need be with micro controller system or other electron component as sensing signal processor; Converting the position in the control signal, speed, acceleration/accel key element to needs what power-assisted signal of power-assisted; The function that converts is exactly the power-assisted demand model, or claims the power-assisted model.
The magnetic polarity of adjacent permanent magnets 2 is important techniques characteristic very on the contrary; All the magnetic polarity distribution mode of permanent magnets 2 is the N utmost point, the S utmost point, the N utmost point, the S utmost point, the N utmost point, the S utmost point ... Make the high and low alternate square-wave signal of Hall 3 outputs; Because as the rolling disc that limited size is ended, rotate the accurate variable signal that will obtain in a week as much as possible, should be to select square wave for use certainly.The time that the peak-to-valley value of square-wave signal changes is short, can in the regular hour, produce the signal that control Significance is arranged as much as possible.The magnetic polarity opposite configuration of adjacent permanent magnets 2 produces square wave; And the identical structure of the magnetic polarity of adjacent permanent magnets 2 produces sinusoidal waveform; During especially for morpet, generally place restrictions at diameter as the rolling disc of sensing element and be 10-15 centimetre, will obtain the signal of controllable function in this limit scope; Rotate a week, produce square wave than producing the available pulse number of sinusoidal waveform and many 7-9 doubly.Nature, the magnetic polarity opposite configuration of adjacent permanent magnets 2 to the control effect of morpet more, the people cooperates with car better, the rider people feels more comfortable.
Rolling disc 1 is provided with centre hole in the circular rail trace 5 place circle scopes of many pieces of permanent magnets 2.If rolling disc 1 will be set on the turning cylinder and use, will establish a hole that wears turning cylinder on the rolling disc 1; For guaranteeing rolling disc 1 when rotating with turning cylinder, Hall 3 can be experienced the motor message of each permanent magnets 2 on the rolling disc 1, then wears the center that scopes are justified at circular rail trace 5 places that the hole should be located at a plurality of permanent magnets 2 on the rolling disc 1, becomes centre hole.That is to say; Centre hole is not necessarily circle; Can be shapes such as square, triangle; So that can be nested with the turning cylinder of shape such as square, triangle, but the interior sky of centre hole necessarily comprises the center of circular rail trace 5 place circles, could use a Hall 3 to experience the motor message of whole permanent magnets 2 on rolling disc 1 rolling disc.
Rolling disc 1 is plastic flagstone, aluminium plate, copper material plate a certain of non-magnet_conductible material.Because the present invention is the magnetic polarity opposite configuration of adjacent permanent magnets 2, can make the edge of adjacent permanent magnets 2 almost can paste the electric signal that also can make Hall 3 outputs that controllable function is arranged mutually.Plastic flagstone, aluminium plate, the copper material plate of handy non-magnet_conductible material, or other on-deformable rolling disc.
Advantage of the present invention: simple in structure, cost is low, the permanent magnets quantity on the permanent magnets ring not restricted, outputting standard impulse singla, do not have signal blind zone, only just total movement state, the output signal of ability perfect representation Moving plate can not drift about in distortion with one group of output signal of a Hall; Be used for morpet, power-assisted output can be highly cooperated with the power-assisted demand and the cyclist is felt well.
(1) simple in structure; Without elastic component; Do not have mechanical fault: experience a plurality of permanent magnets with Hall and rotate output signal, can calculate torque principle with the speed that Chinese patent 01201843.0 provides, available multiple math modeling is calculated the moment parameter of morpet; Be used to control the motor of morpet, realize power-assisted.Be lower than with elastic component and mechanically stressed sensor without elastic component, simple in structure, cost.After having avoided long-time use, each mechanical part is out of shape, does not have mechanical fault, cooperates not good problem.
(2) magnetic polarity is opposite, the output square-wave signal has the accuracy control function: because the magnetic polarity of adjacent two pieces of permanent magnets is opposite, and Hall is selected for use opposite magnetic polarities is produced the square wave output signal
Hall, then adjacent two pieces of permanent magnets no matter spacing what, even very close to each other between adjacent two pieces of permanent magnets, Hall can be exported square-wave signal too.As be used for morpet; The motor of controlling morpet with the output signal of square wave is superior to using sinusoidal waveform; Because the rectangle wave energy is accomplished signal point at any time; The signal implication of expression movement position and speed is accurate, thereby can accurately represent the movement position and the speed of booster bicycle pedal, so that go out the correct power-assisted demand of this state of kinematic motion with accurate position of pedal and speed calculation.
(3) magnetic polarity of adjacent permanent magnets is opposite; Permanent magnets quantity is restricted not, can increase the sensing point position as far as possible: because magnetic polarity is opposite, and the output square-wave signal; Even adjacent permanent magnets does not have the gap; The signal of its output has remained number, differentiable square-wave signal, still has controllable function, and that is to say can not export does not have the no change of controllable function linear signal.As be used for morpet; Because rolling disc diameter restricted with the pedal interlock; Just can be on the rolling disc of prescribed level; Increase as far as possible permanent magnets quantity, as far as possible increase the sensing point position, represent bicycle pedal movement position and speed with as much as possible transducing signal, accurately represent state of kinematic motion.
(4) magnetic polarity of adjacent permanent magnets is opposite; Can be provided with that permanent magnets is many, the sensing point position is many; The state of kinematic motion of rolling disc is represented accurately: to being used for morpet; Fixedly the rolling disc size of permanent magnets receives strictness and places restrictions on, and general rolling disc diameter can only have the magnetic pole signal that obtains permanent magnets under the condition of spacing in order to make Hall in 10-15 centimetre; The diameter of its permanent magnets is at least Ф 0.6-0.8 centimetre, then peripheral zero-lash 35-73 permanent magnets ［ (10-1) the * 3.14/0.8=35 that is provided with of diameter 10-15 centimetre rolling disc; (15-1) * 3.14/0.6=73 ］, promptly stretcher circles, and Hall can obtain the motor that 35-73 signal is used to control morpet.But if the identical prior art of adjacent permanent magnets magnetic polarity, adjacent permanent magnets then on diameter 10-15 centimetre rolling disc, can only be provided with 5-8 permanent magnets ［ (10-1) * 3.14/5.8=5 at most by 5 centimetres of spacings; (15-1) * 3.14/5.6=8 ］.It is thus clear that patent art can be provided with doubly ［ 35/5=6 of permanent magnets 7-9 than prior art more; 73/8=9 ］, 30-65 permanent magnets ［ 35-5=30 is set more; 73-8=65 ］.So rolling disc circles, patent art has increased 7-9 turn disc site signal doubly than prior art.Electric machine control accuracy rate to morpet has improved 7-9 doubly naturally; Make the cyclist also improve 7-9 doubly to power-assisted demand accuracy rate; Car and people's cooperate degree improves greatly, and cyclist's comfort increases greatly, no longer is the boosted vehicle the sort of one fast one slow uncomfortable feeling of prior art.The present invention asks someone according to the experience of reality, when on the rolling disc 15 permanent magnets being set uniformly roughly, having eliminated prior art basically and has only established 5-8 permanent magnets and make boosted vehicle the sort of one fast one slow uncomfortable feeling; When on the rolling disc 20 permanent magnets being set uniformly roughly, car cooperates oneself can satisfy human needs with the people's, and the sensation of riding boosted vehicle is very comfortable.
(5) do not have signal blind zone, the power-assisted that power-assisted demand whenever all can obtain to be complementary: this patent can be provided with 35-73 permanent magnets at most at diameter 10-15 centimetre rolling disc periphery, and average angle is the 5-10 degree between each permanent magnets.Be used for morpet; When starting or move, stretcher has 4-7 permanent magnets (just there has been a signal position leaving 10 degree angles, summit) in the 35 degree zones of leaving 10-45 degree angle, summit; Then the exportable 4-7 of Hall control signal reacts the power-assisted demand; Can realize any position, have power-assisted just can obtain corresponding power-assisted excellent technique effect any time, make car and people's no-float, it is laborsaving comfortable again that the cyclist feels.
(6) only with a Hall; A control signal is represented the total movement state of rolling disc; The state of kinematic motion of control signal and rolling disc is in full accord, and control signal and people's demand is in full accord: a plurality of permanent magnets are fixed on the rolling disc, and permanent magnets and rolling disc rotate synchronously; With a whole permanent magnets motor message of Hall impression; Then the state of kinematic motion of the control signal of Hall output and rolling disc is in full accord, and just in full accord with people's demand, control signal does not have original segmentation sum of errors signal drift problem yet.Even the hall sensing parameter changes, also being that the The whole control signal is parallel moves, as long as receive the range of receiving broad of the electric machine controller of Hall control signal, the control effect of the Hall control signal that has changed becomes systematicness to change.As be used for morpet, and the power-assisted demand model can distortion, and power-assisted output and power-assisted demand still keep the matching relationship of original model, and the systematicness that the cyclist is easy to grasp this power-assisted ability changes.
Description of drawings
Fig. 1 is the sensitive member structural representation that a plurality of N-S of rectangular distribution replace permanent magnets on the rolling disc;
Fig. 2 is the sensitive member structural representation that a plurality of N-S of high density rectangular distribution replace permanent magnets on the rolling disc.
1 is rolling disc, the 2nd among the figure, permanent magnets, the 3rd, Hall, the 5th, circular rail trace.
The specific embodiment
Embodiment 1, many magnetic patch well-distributed rotating disc type sensitive member
Like Fig. 1, with being set with 20 permanent magnets 2 on 10.0 centimetres of rolling discs 1 of highstrenghtpiston's injection molded diameter.
All the rounded equably track of permanent magnets 2 distributes, and each permanent magnets 2 is fixed on 9.0 centimetres of circular rail traces 5 of diameter, and promptly each permanent magnets 2 is identical to the distance between identical, the adjacent permanent magnets 2 of distance at circle center, circular rail trace 5 place.
All the rounded equably track of permanent magnets 2 distributes, and each permanent magnets 2 is fixed on 9.0 centimetres of circular rail traces 5 of diameter, and promptly each permanent magnets 2 is identical to the distance between identical, the adjacent permanent magnets 2 of distance at circle center, circular rail trace 5 place.
The opposite mode of magnetic polarity in 2 one-tenth adjacent permanent magnets 2 of whole permanent magnets of 1 one face settings of rolling disc is arranged, promptly on 1 one faces of rolling disc all the magnetic polarity distribution mode of permanent magnets 2 be the N utmost point, the S utmost point, the N utmost point, the S utmost point, the N utmost point, the S utmost point ...
Be located at that one side that rolling disc 1 has permanent magnets 2 with a Hall 3; Hall 3 is located at the position near permanent magnets 2; Be that Hall 3 is located in each permanent magnets 2 place circular rail trace 5 scope; Hall 3 keeps 0.3 centimetre spacing distance with each permanent magnets 2 of rotary state, and each permanent magnets 2 that makes rotation is through Hall 3 time, and Hall 3 can produce a cooresponding square wave electric signal output.
Rolling disc 1 is provided with centre hole at these circular rail trace 5 centers, whole permanent magnets 2 place, and centre hole is used to be enclosed within pedal axis or the runner rotating shaft of morpet to be used.
Like Fig. 2, a face of the high strength aluminium rolling disc 1 that diameter is 10.0 centimetres is provided with 40 permanent magnets 2 of diameter 0.4-0.6 centimetre.The magnetic flow of permanent magnets 2 is 146---279 (BH) max/KJm
-3In some values, Hall 3 keeps 0.2 centimetre spacing distance with each permanent magnets 2 of rotary state, each permanent magnets 2 that makes rotation is through Hall 3 time, Hall 3 can produce a cooresponding square wave electric signal output.The structure of other rolling disc 1, permanent magnets 2, Hall 3 is same as embodiment 1.
Claims (4)
1. many magnetic patch well-distributed rotating disc type sensitive member; Comprise a rolling disc (1) and many pieces of permanent magnets (2); Many pieces of permanent magnets (2) big or small identical, shape is identical, magnetic flow is identical; It is characterized in that: be set with many pieces of permanent magnets (2) on the rolling disc (1), the rounded equably track of these many pieces of permanent magnets (2) distributes, and promptly every piece of permanent magnets (2) is identical to the distance between identical, the adjacent two pieces of permanent magnets of distance (2) at circle center, circular rail trace (5) place; In certain one side of rolling disc (1), the magnetic polarity of adjacent permanent magnets (2) is opposite, and promptly simultaneously to go up the magnetic polarity distribution mode of whole permanent magnets (2) be the N utmost point, the S utmost point, the N utmost point, the S utmost point, the N utmost point, the S utmost point for certain of rolling disc (1)
Also comprise a Hall (3), Hall (3) is positioned at certain one side of rolling disc (1), and Hall (3) is located at the position that also can experience permanent magnets (2) magnetic flow near permanent magnets (2), between Hall (3) and the permanent magnets (2) spacing is arranged; Hall (3) is the Hall that opposite magnetic polarities is produced the square wave output signal.
2. many magnetic patch well-distributed rotating disc type sensitive member according to claim 1 is characterized in that: Hall (3) is located at over against the position of the circular rail trace (5) of many pieces of permanent magnets (2).
3. many magnetic patch well-distributed rotating disc type sensitive member according to claim 2 is characterized in that: rolling disc (1) is provided with centre hole in the circle scope of circular rail trace (5) place of many pieces of permanent magnets (2).
4. many magnetic patch well-distributed rotating disc type sensitive member according to claim 3 is characterized in that: rolling disc (1) is plastic flagstone, aluminium plate, copper material plate a certain of non-magnet_conductible material.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102634591A CN102795294A (en) | 2012-07-28 | 2012-07-28 | Rotating disk type sensing element with uniform distribution of multiple magnetic blocks |
| CN201320437966.2U CN203581298U (en) | 2012-07-28 | 2013-07-23 | Rotary disc type sensing element with even distribution of magnetic sheets |
| CN201310309349.9A CN103381871B (en) | 2012-07-28 | 2013-07-23 | Many magnetic sheets well-distributed rotating disc type sensitive member |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102634591A CN102795294A (en) | 2012-07-28 | 2012-07-28 | Rotating disk type sensing element with uniform distribution of multiple magnetic blocks |
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| CN102795294A true CN102795294A (en) | 2012-11-28 |
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| CN2012102634591A Pending CN102795294A (en) | 2012-07-28 | 2012-07-28 | Rotating disk type sensing element with uniform distribution of multiple magnetic blocks |
| CN201310309349.9A Expired - Fee Related CN103381871B (en) | 2012-07-28 | 2013-07-23 | Many magnetic sheets well-distributed rotating disc type sensitive member |
| CN201320437966.2U Withdrawn - After Issue CN203581298U (en) | 2012-07-28 | 2013-07-23 | Rotary disc type sensing element with even distribution of magnetic sheets |
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| CN201310309349.9A Expired - Fee Related CN103381871B (en) | 2012-07-28 | 2013-07-23 | Many magnetic sheets well-distributed rotating disc type sensitive member |
| CN201320437966.2U Withdrawn - After Issue CN203581298U (en) | 2012-07-28 | 2013-07-23 | Rotary disc type sensing element with even distribution of magnetic sheets |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398811A (en) * | 2013-08-08 | 2013-11-20 | 上海电机学院 | Non-contact torque and power measuring device and method |
| CN103398810A (en) * | 2013-08-08 | 2013-11-20 | 上海电机学院 | Non-contact torque and power measuring device and method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102795294A (en) * | 2012-07-28 | 2012-11-28 | 成都宽和科技有限责任公司 | Rotating disk type sensing element with uniform distribution of multiple magnetic blocks |
| CN106043569B (en) * | 2016-07-04 | 2018-09-11 | 胡玥 | A kind of Segway Human Transporter |
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| CN201955184U (en) * | 2010-12-03 | 2011-08-31 | 保定市玮尔光电科技有限公司 | Torque sensor for petroleum logging wireless transmission |
| CN202847951U (en) * | 2012-07-28 | 2013-04-03 | 成都宽和科技有限责任公司 | Rotating disc type sensing element with multi-magnetic block evenly distributed |
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| CN102795294A (en) * | 2012-07-28 | 2012-11-28 | 成都宽和科技有限责任公司 | Rotating disk type sensing element with uniform distribution of multiple magnetic blocks |
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- 2013-07-23 CN CN201320437966.2U patent/CN203581298U/en not_active Withdrawn - After Issue
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103398811A (en) * | 2013-08-08 | 2013-11-20 | 上海电机学院 | Non-contact torque and power measuring device and method |
| CN103398810A (en) * | 2013-08-08 | 2013-11-20 | 上海电机学院 | Non-contact torque and power measuring device and method |
| CN103398811B (en) * | 2013-08-08 | 2015-07-08 | 上海电机学院 | Non-contact torque and power measuring device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103381871A (en) | 2013-11-06 |
| CN103381871B (en) | 2015-09-30 |
| CN203581298U (en) | 2014-05-07 |
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