CN105783946B - Self power generation absolute type code device - Google Patents
Self power generation absolute type code device Download PDFInfo
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- CN105783946B CN105783946B CN201410826312.8A CN201410826312A CN105783946B CN 105783946 B CN105783946 B CN 105783946B CN 201410826312 A CN201410826312 A CN 201410826312A CN 105783946 B CN105783946 B CN 105783946B
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Abstract
The invention discloses a kind of self power generation absolute type code device, the turnning circle for measuring test system, including:Self power generation module, there are two Wiegand silk and magnetic filed generation unit, magnetic filed generation units to generate changes of magnetic field for tool, and two Wiegand silks is made to generate two pulse voltages according to changes of magnetic field;Rectification circuit receives two pulse voltages, and by two pulse voltage rectifications;Storage element receives the electric energy that two pulse voltages after rectification provide and operates;Integrated circuit, it receives the electric energy that two pulse voltages after rectification provide and operates, and two pulse voltages after rectification are filtered, to judge the rotation direction of test system according to two pulse voltages after rectifying and wave-filtering, and the turnning circle of test system is calculated according to judging result, in the result write-in storage element after calculating.
Description
Technical field
The present invention relates to a kind of code devices, and espespecially one kind can reinforce power supply capacity, and need not be using Hall sensor
The rotation direction that can differentiate test system, to carry out the self power generation absolute type code device of number of turns counting.
Background technology
In general, all having encoder in AC servomotor, which is used to provide the angle of rotor, to know
The rotary speed information of motor, and then relevant speed control unit is made to accurately control motor rotary speed according to rotary speed information.
Encoder can be divided into absolute type encoder and incremental encoder according to its coding mode, and wherein absolute type is compiled
The characteristic of code device is that each position corresponds to a specific coding, therefore after AC servomotor power-off is sent a telegram in reply again, still may be used
Correct angle is obtained by reading the specific coding that absolute type encoder is provided to count, and without being renewed again or
The action of zero.
Absolute type encoder can also be divided into individual pen absolute type encoder and multiturn absolute type encoder, wherein multiturn absolute type
Whether encoder can be by using battery two types be divided into, and one of which type is mechanical gear formula encoder, the mechanical gear
Formula encoder using mechanical structures such as gears come recording angular position, therefore need not be powered using battery.However the machinery
Gear type encoder is because having multiple gears, therefore structure is complex, relatively also has larger volume.
Therefore, in order to meet the trend development of microminiaturization, multiturn absolute type used in AC servomotor of arranging in pairs or groups at present
Encoder is largely another type, as battery type encoder, includes battery in battery type encoder, when unpowered is to electricity
When pool encoder, battery type encoder, which then changes, to be battery powered, and the optics framework of battery type decoder internal is made to carry out angle
It counts.
Although battery type encoder using optics framework because carrying out number of turns counting, rather than similar mechanical gear formula encoder profit
Carry out number of turns counting with gear so that the volume of battery type encoder can relative decrease, therefore space can be saved and be thinned
Design, however due to the limited battery life in battery type encoder, when battery electric power exhausts, not only replaces and is not easy,
And discarded battery also generates environmental issue, further, often more renews battery due to taking, cause battery type encoder at
This raising.
Although in order to improve the missing of above-mentioned battery type encoder, has been developed voluntarily sent out using single Wiegand silk at present
The self power generation absolute type code device of electricity, the self power generation absolute type code device is according to Wiegand effect (Wiegand effect) institute
Design, its working principle is that in checker magnetic field, when certain polarity of parallel single Wiegand silk, such as N grades, magnetic field reach
When triggering magnetic induction intensity, single Wiegand silk just induces a pulse voltage, and when rotation is to opposite polarity, then induce one
Direction pulse-reverse voltage, and the electric energy of those pulse voltages is provided to the circuit in self power generation absolute type code device to make
With thus, which self power generation absolute type code device can need not need to have battery such as battery type encoder.
However above-mentioned self power generation absolute type code device carrys out self-generating due to the use of single Wiegand silk, therefore power effect compared with
It is bad.In addition, corresponding to using single Wiegand silk, above-mentioned self power generation absolute type code device must also have a hall sensing
Device could detect the rotation direction of the rotor of motor by Hall sensor, such as is rotated forward or is inverted, right above-mentioned self power generation
Absolute type code device simultaneously directly can not judge what the rotor of motor rotated using pulse voltage caused by single Wiegand silk
Direction.
Therefore, how to develop a kind of self power generation absolute type code device improving above-mentioned known technology missing, actually phase
Close those skilled in the art's problem in the urgent need to address at present.
Invention content
The brief overview about the present invention is given below, in order to provide the basic reason about certain aspects of the invention
Solution.It should be appreciated that this general introduction is not the exhaustive general introduction about the present invention.It is not intended to determine the key of the present invention
Or pith, nor is it intended to limit the scope of the present invention.Its purpose only provides certain concepts in simplified form, with
This is as the preamble being also well described discussed later.
The purpose of the present invention is to provide a kind of self power generation absolute type code device, self power generation absolute type code device tools
There are two Wiegand silk, supplied electricity to the electric energy of generated two pulse voltages when two Wiegand silks are in changes of magnetic field certainly
Circuit unit inside power generation absolute type code device, with self power generation absolute type code device known in solution due to the use of single Wei
Root silk carrys out self-generating, therefore the more bad missing of effect of powering.
Another object of the present invention is to provide a kind of self power generation absolute type code device, self power generation absolute type coding dresses
The integrated circuit set can be to be measured directly to judge by two pulse voltages caused by rectification and filtered two Wiegand silks
The rotation direction of device is compiled with calculating the turnning circle of test system according to judging result with self power generation absolute type known in solution
Code device simultaneously can not judge missings such as direction that the rotor of motor rotates using pulse voltage caused by single Wiegand silk.
In order to achieve the above object, the broader embodiment of the present invention is to provide a kind of self power generation absolute type code device, use
In the turnning circle for measuring test system, including:There is self power generation module the first Wiegand silk, the second Wiegand silk and magnetic field to generate
Unit, magnetic filed generation unit generate changes of magnetic field, and the first Wiegand silk and the second Wiegand silk is made to be generated respectively according to changes of magnetic field
At least one first pulse voltage and at least one second pulse voltage;Rectification circuit receives the first pulse voltage and the second pulse electricity
Pressure, and by the first pulse voltage and the second pulse voltage rectification;Storage element is electrically connected with rectification circuit, after receiving rectification
The first pulse voltage and the electric energy that is provided of the second pulse voltage and operate;Integrated circuit, with self power generation module, rectification circuit
And storage element electrical connection, it receives the electric energy that the first pulse voltage and the second pulse voltage after rectification are provided and operates,
And by after rectification the first pulse voltage and the second pulse voltage filter, with according to the first pulse voltage and the after rectifying and wave-filtering
Two pulse voltages judge the rotation direction of test system, and the turnning circle of test system is calculated according to judging result, by will in terms of
In result write-in storage element after calculation;And encoder, it is mutually communicated with integrated circuit and storage element, and and test system
It rotates synchronously, the turnning circle for reading test system by integrated circuit and/or storage element, and then test system is provided
Angle when rotation counts.
The magnetic filed generation unit has a shaft, two bearings and at least one pairs of magnetic pole, the shaft and the test system
It coaxially rotates synchronously, two bearings are sheathed on respectively in the shaft, and positioned at the opposite sides of the first pairs of magnetic pole, should
Pairs of magnetic pole is set in the shaft, and is made of the poles a N magnet and the poles a S magnet.
The first Wiegand silk and the second Wiegand silk are adjacent to the pairs of magnetic pole and one of them bearing in a manner of misplacing
Between top, and the first Wiegand silk and the second Wiegand silk dislocation direction it is parallel with the rotation direction of the shaft.
Further, first pulse voltage after rectifying and wave-filtering and have between second pulse voltage after rectifying and wave-filtering
There is phase difference, and the angular dimension of the phase difference corresponds to the group number of the pairs of magnetic pole.
When first pulse voltage of the integrated circuit after rectifying and wave-filtering is changed into high levle voltage by low level voltage,
It is high levle voltage or low level voltage to detect second pulse voltage after rectifying and wave-filtering, to judge that this is waited for according to testing result
Survey the rotation direction of device.
Further, the first pulse voltage after the integrated circuit is in the rectifying and wave-filtering is changed into height by low level voltage
When detecting that second pulse voltage after rectifying and wave-filtering is low level voltage when level voltage, turning for the test system is judged
Dynamic direction is rotated by the first Wiegand silk towards the direction of the second Wiegand silk.
Further, the first pulse voltage after the integrated circuit is in the rectifying and wave-filtering is changed into height by low level voltage
When detecting that second pulse voltage after rectifying and wave-filtering is high levle voltage when level voltage, turning for the test system is judged
Dynamic direction is rotated by the second Wiegand silk towards the direction of the first Wiegand silk.
The first Wiegand silk and the second Wiegand silk are rectangular parallelepiped structure, and the first Wiegand silk is along long side direction itself
And the direction extended towards the magnetic electric field generating unit generates single with the second Wiegand silk along long side direction itself towards the magnetic field
The junction shape in the direction that member is extended has angle.
The angle is more than 0 °, and is less than 90 °.
The storage element is made of a Ferroelectric Random Access Memory, and the integrated circuit is by a special application integrated circuit institute
It constitutes.
In order to achieve the above object, another broader embodiment of the present invention is to provide a kind of self power generation absolute type code device,
Turnning circle for measuring test system, angle when thus providing test system rotation count, including:Encoder has
Ontology, additional circuit boards and magnetic filed generation unit, magnetic filed generation unit are set on ontology with rotating synchronously with test system, and
It is synchronized when test system rotates and is driven and generates changes of magnetic field, additional circuit boards are set to the side of ontology;Self power generation mould
Block, it is adjacent with encoder to set, and with the first Wiegand silk, the second Wiegand silk, wherein the first Wiegand silk and the setting of the second Wiegand silk
In in additional circuit boards, and generate at least one first pulse voltage and at least one second pulse electricity respectively according to changes of magnetic field
Pressure;Rectification circuit receives the first pulse voltage and the second pulse voltage, and the first pulse voltage and the second pulse voltage is whole
Stream;Storage element is electrically connected with rectification circuit, to receive the first pulse voltage after rectification and the second pulse voltage provided
Electric energy and operate;And integrated circuit, it is electrically connected with self power generation module, rectification circuit and storage element, after receiving rectification
Electric energy that first pulse voltage and the second pulse voltage are provided and operate, and by the first pulse voltage and the second arteries and veins after rectification
Rush voltage filter, with according to after rectifying and wave-filtering the first pulse voltage and the second pulse voltage judge the rotation side of test system
To, and according to the turnning circle of judging result calculating test system, in the result write-in storage element after calculating;Wherein compile
Code device is also mutually communicated with integrated circuit and/or storage element, to read test system by integrated circuit and/or storage element
Turnning circle, and then angle counting when test system rotation is provided.
Compared with prior art, the beneficial effects of the invention are as follows:
There are two Wiegand silks for the self power generation absolute type code device tool of the present invention, by two Wiegand silks in changes of magnetic field
The electric energy of generated two pulse voltages, supplies electricity to the circuit unit inside self power generation absolute type code device, to solve public affairs
Know that self power generation absolute type code device carrys out self-generating due to the use of single Wiegand silk, therefore the more bad missing of effect of powering.
The integrated circuit of the self power generation absolute type code device of the present invention can pass through rectification and filtered two Wiegand silks
Generated two pulse voltages directly judge the rotation direction of test system, and turning for test system is calculated according to judging result
Moving-coil number can not be sentenced with self power generation absolute type code device known in solution and using pulse voltage caused by single Wiegand silk
The missings such as the direction of rotor rotation of disconnected motor.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
With obtain other attached drawings according to these attached drawings.
Fig. 1 is the electrical block diagram of the self power generation absolute type code device of present pre-ferred embodiments;
Fig. 2 is the self power generation module of self power generation absolute type code device shown in FIG. 1 and the structural schematic diagram of encoder;
Fig. 3 is the first pulse voltage shown in FIG. 1 and the rectified filtered wave mode schematic diagram of the second pulse voltage;
Fig. 4 is the self power generation module of self power generation absolute type code device shown in Fig. 2 and another change case of encoder
Structural schematic diagram;
Fig. 5 is the structural schematic diagram of another angle of encoder shown in Fig. 4.
Reference numeral:
1:Self power generation absolute type code device
10、40:Self power generation module
100:First Wiegand silk
101:Second Wiegand silk
102:Magnetic filed generation unit
103:Shaft
104:First pairs of magnetic pole
105、441:The poles N magnet
106、442:The poles S magnet
107:Bearing
11:Rectification circuit
12:Storage element
13:Integrated circuit
44:Encoder
440:Second pairs of magnetic pole
443:Additional circuit boards
444:Ontology
α:Angle
P1:First pulse voltage
P2:Second pulse voltage
U:Phase difference
B:Arrow.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Described in the attached drawing of the present invention or a kind of embodiment
Elements and features can be combined with elements and features shown in one or more other attached drawings or embodiment.It should
Note that for purposes of clarity, being omitted in attached drawing and explanation unrelated to the invention, known to persons of ordinary skill in the art
The expression and description of component and processing.Based on the embodiments of the present invention, those of ordinary skill in the art are not paying creation
Property labour under the premise of the every other embodiment that is obtained, shall fall within the protection scope of the present invention.
Referring to Fig. 1 and Fig. 2, wherein Fig. 1 is the circuit knot of the self power generation absolute type code device of present pre-ferred embodiments
Structure schematic diagram, Fig. 2 are the self power generation module of self power generation absolute type code device shown in FIG. 1 and the structural schematic diagram of encoder.
As depicted in figs. 1 and 2, the self power generation absolute type code device 1 of the present embodiment is used to measuring and counting a test system, such as hands over
Flow servo motor rotor, turnning circle, and then provide test system rotation when angle count, self power generation absolute type coding
Device 1 includes a self power generation module 10, a rectification circuit 11, a storage element 12, an integrated circuit 13 and an encoder 14.
Self power generation module 10 has one first Wiegand silk 100, the second Wiegand silk 101 and magnetic filed generation unit 102, wherein magnetic
Electric field generating unit 102 has a shaft 103 and at least one first pairs of magnetic pole 104 for generating changes of magnetic field.Wherein shaft
103 is coaxial with test system and rotate synchronously.The number of first pairs of magnetic pole 104 corresponds to self power generation absolute type code device 1
The difference of the frame number for the AC servomotor for measuring and counting and have different embodiments, such as it is in the present embodiment, spontaneous
The frame number for the AC servomotor that electric absolute type code device 1 is measured and counted is relatively large, therefore the first pairs of magnetic pole 104 is right
Five groups are should be, five groups of the first pairs of magnetic pole 104 is set in a manner of cricoid in shaft 103, therefore every one first pairs of magnetic pole
The all adjacent one first pairs of magnetic pole 104 of 104 opposite sides, in addition, every 1 first pairs of magnetic pole 104 by the poles a N magnet 105 and
One poles S magnet 106 is constituted, and the opposite sides of the poles the N magnet 105 of every one first pairs of magnetic pole 104 or the poles S magnet 106 is all
The magnetic magnet for being different from magnetism itself is set, such as the poles S magnet 106 is respectively set in the opposite sides of the poles N magnet 105.It is each
The poles the N magnet 105 and the poles S magnet 106 of first pairs of magnetic pole 104 generate direction by the poles N magnet 105 towards the magnetic force of the poles S magnet 106
Line, therefore when shaft 103 and test system rotate synchronously, shaft 103 just drives the pairs of magnetic pole 104 of all first to rotate,
Every 1 first pairs of magnetic pole 104 is set respectively to generate changes of magnetic field because of rotation.In addition, in other embodiments, when self power generation is exhausted
When the frame number for the AC servomotor that type code device 1 is measured and counted is relatively small, the first pairs of magnetic pole 104 also can example
Such as it is one group.
In the above-described embodiments, self power generation module 10 also has there are two bearing 107, is sheathed on respectively in shaft 103, and position
Between the opposite sides of the first pairs of magnetic pole 104 in other words, the first pairs of magnetic pole 104 are located at two bearings 107, two
Bearing 107 can fix the first pairs of magnetic pole 104 in the position in shaft 103.
First Wiegand silk 100 and the second Wiegand silk 101 are adjacent to first according to designed by Wiegand effect in a manner of dislocation
Top between magnetic pole 104 and a bearing 107 therein in pairs, wherein what the first Wiegand silk 100 and the second Wiegand silk 101 misplaced
Direction (namely online direction of the first Wiegand silk 100 and the second Wiegand silk 101) is parallel with the rotation direction of shaft 103, when turn
When axis 103 drives the rotation of the pairs of magnetic pole 104 of all first and generates changes of magnetic field, the first Wiegand silk 100 just corresponding induction and
At least one first pulse voltage P1 is generated, the second Wiegand silk also corresponds to induction and generates at least one second pulse voltage P2, and
In the present embodiment, since magnetic filed generation unit 102 has five group of first pairs of magnetic pole 104, magnetic filed generation unit 102 can be because
Five group of first pairs of magnetic pole 104 and there are five groups of magnetic lines of force, therefore when shaft 103 drives pairs of magnetic pole 104 rotation of all first
One circle, when the direction of five groups of magnetic lines of force being made respectively to change and generate changes of magnetic field, the first Wiegand silk 100 actually generates five the
One pulse voltage P1, the second Wiegand silk 101 actually generate five the second pulse voltage P2.
In the above-described embodiments, the first Wiegand silk 100 and the second Wiegand silk 101 can be but be not limited to rectangular parallelepiped structure, and
The direction and 101 edge of the second Wiegand silk that first Wiegand silk 100 is extended along long side direction itself and towards magnetic filed generation unit 102
The junction in direction for long side direction itself and being extended towards magnetic filed generation unit 102 forms an angle α (as shown in Figure 2),
Wherein ranging from 0 ° of angle α<α<90°.
Rectification circuit 11 is in a manner of connection, such as is electrically connected with self power generation module 10 and receives the first pulse voltage
P1 and the second pulse voltage P2, and the first pulse voltage P1 and the second pulse voltage P2 are subjected to rectification.
Storage element 12 can be but be not limited to by Ferroelectric Random Access Memory (Ferroelectric Random Access
Memory;FRAM it) is constituted, is electrically connected with rectification circuit 11, to receive the first pulse voltage P1 and the second arteries and veins after rectification
Rush voltage P2, so the first pulse voltage P1 after rectification and the second pulse voltage P2 provided electric energy by transported
Make, storage element 12 is used to store the turnning circle of test system.
Integrated circuit 13 can be but be not limited to by special application integrated circuit (Application-specific
integrated circuit;ASIC it) is constituted, and is electrically connected with rectification circuit 11 and storage element 12, integrated circuit 13 connects
The the first pulse voltage P1 and the second pulse voltage P2 after rectification are received, to pass through the first pulse voltage P1 and the second arteries and veins after rectification
It rushes the electric energy that voltage P2 is provided and is operated, in addition, integrated circuit 13 is also by the first pulse voltage P1 and after rectification
Two pulse voltage P2 are filtered, and make the second pulse voltage P2 after the first pulse voltage P1 and rectifying and wave-filtering after rectifying and wave-filtering
Respectively square wave configuration (as shown in Figure 3), further, integrated circuit 13 is also according to the first pulse voltage P1 after rectifying and wave-filtering
And the second pulse voltage P2 after rectifying and wave-filtering judges the rotation direction of test system, such as judge the rotation direction of test system
By the second Wiegand silk 101 towards the direction rotation of the first Wiegand silk 100 or by the first Wiegand silk 100 towards the side of the second Wiegand silk 101
To rotation, and then the turnning circle of test system is calculated, and storage element 12 is written into the turnning circle after calculating.
Encoder 14 and integrated circuit 13 and storage element 12 mutually communicate, and it is adjacent with self power generation module 10 set, and with
Test system is coaxial and rotates synchronously, and when encoder 14 operates, can be waited for by integrated circuit 13 and/or the reading of storage element 12
The turnning circle of device is surveyed, and then the rotation amount of the shaft of test system when test system rotates is obtained by operation, to carry
Angle when being rotated for test system counts.Below by the integrated circuit 13 illustrated the present invention how according to after rectifying and wave-filtering
The first pulse voltage P1 and rectifying and wave-filtering after the second pulse voltage P2 judge the rotation direction of test system, and with Fig. 3 examples
Show the first pulse voltage P1 and the second pulse voltage P2 via the wave mode after rectifying and wave-filtering, and due to the first arteries and veins after rectifying and wave-filtering
Phase difference is of virtually between the second pulse voltage P2 rushed after voltage P1 and rectifying and wave-filtering, and according to the first pairs of magnetic pole
The difference of 104 rotation directions and make the first pulse voltage P1 phase-leads after rectifying and wave-filtering or fall behind after rectifying and wave-filtering the
The phase of two pulse voltage P2, therefore the technology of the present invention is understood for convenience, Fig. 3 exemplarily shows the first pairs of magnetic pole 104
Rotation direction makes the phase of the second pulse voltage P2 after the first pulse voltage P1 phase-lead rectifying and wave-filterings after rectifying and wave-filtering.
Referring to Fig. 3, and coordinate Fig. 1 and Fig. 2, wherein Fig. 3 is that the first pulse voltage shown in FIG. 1 and the second pulse voltage pass through
Wave mode schematic diagram after rectifying and wave-filtering.As shown in 1-3 figures, the substantial phase of waveform of the first pulse voltage P1 after rectifying and wave-filtering
Waveform namely the amplitude for being similar to the second pulse voltage P2 after rectifying and wave-filtering are equal, and due to the first Wiegand silk 100 and the second Wei
Root silk 101 is adjacent to the top between the first pairs of magnetic pole 104 and a bearing 107 therein, and the first Wiegand in a manner of dislocation
Silk 100 and second Wiegand silk 101 online direction it is parallel with the rotation direction of shaft 103, therefore when shaft 103 drive first at
When being rotated to magnetic pole 104 and generating changes of magnetic field, according to 103 rotation direction of shaft, the first Wiegand silk 100 and the second Wiegand silk
It is inevitable between 101 to generate induction according to changes of magnetic field and in different time, therefore cause the first pulse voltage P1 and the second pulse
Phase difference is of virtually between voltage P2, accordingly second after the first pulse voltage P1 and rectifying and wave-filtering after rectifying and wave-filtering
Actually also there is phase difference U, wherein phase difference U to be less than 90 °, and the angular dimension pair of phase difference U between pulse voltage P2
It should be in the group number of the first pairs of magnetic pole 104.
Referring to Fig. 1-3, due to the second pulse voltage P2 after the first pulse voltage P1 and rectifying and wave-filtering after rectifying and wave-filtering
Actually during generation, corresponds to the first pulse voltage P1 and the second pulse voltage P2 and be changed into respectively by low level voltage
High levle voltage is reconverted into low level voltage, and second after the first pulse voltage P1 and rectifying and wave-filtering after rectifying and wave-filtering
There is phase difference U, therefore when shaft 103 is coaxial with test system and synchronous rotation between pulse voltage P2, with drive five groups the
When one pairs of magnetic pole 104 rotates, the second pulse voltage P2 after the first pulse voltage P1 and rectifying and wave-filtering after rectifying and wave-filtering must
High levle voltage is so changed by low level voltage in different time, is reconverted into low level voltage, therefore the present invention's is integrated
Circuit 13 can be after rectifying and wave-filtering the first pulse voltage P1 when being changed into high levle voltage by low level voltage, detect rectification
Filtered second pulse voltage P2 is high levle voltage or low level voltage, and the testing result of foundation judges turning for test system
Dynamic direction, further illustrates, the first pulse voltage P1 after the integrated circuit 13 of the present invention is in rectifying and wave-filtering is by low level electricity
Pressure detects that the second pulse voltage P2 after rectifying and wave-filtering is low level voltage (as shown in Figure 3) when being changed into high levle voltage,
It represents after the first pulse voltage P1 after rectifying and wave-filtering is changed into high levle voltage prior to rectifying and wave-filtering by low level voltage
Second pulse voltage P2 is changed into the phase of the first pulse voltage P1 after high levle voltage namely rectifying and wave-filtering by low level voltage
The second pulse voltage P2 after the leading rectifying and wave-filtering in position, thus integrated circuit 13 can determine the rotation direction of test system by
First generate the first pulse voltage P1 the first Wiegand silk 100 generate backwards the second pulse voltage P2 the second Wiegand silk 101 side
To rotation (arrow B as shown in Figure 3).
Conversely, the first pulse voltage P1 after the integrated circuit 13 of the present invention is in rectifying and wave-filtering is changed by low level voltage
To detect that the second pulse voltage P2 after rectifying and wave-filtering is high levle voltage when high levle voltage, that is, after representing rectifying and wave-filtering
Second pulse voltage P2 is changed into high levle voltage earlier than the first pulse voltage P1 after rectifying and wave-filtering by low by low level voltage
After level voltage is changed into the phase-lead rectifying and wave-filtering of the second pulse voltage P2 after high levle voltage namely rectifying and wave-filtering
First pulse voltage P1, therefore integrated circuit 13 can differentiate the rotation direction of test system by first generating the second pulse voltage P2
The second Wiegand silk 101 generate backwards the first pulse voltage P1 the first Wiegand silk 100 direction rotation.
Referring to Fig. 4 and Fig. 5, wherein Fig. 4 is the self power generation module and coding of self power generation absolute type code device shown in Fig. 2
The structural schematic diagram of another change case of device, Fig. 5 are the structural schematic diagram of another angle of encoder shown in Fig. 4.Such as Fig. 4 and
Shown in Fig. 5, the self power generation module 40 of the present embodiment and the structure and function of encoder 44 are similar to self power generation module shown in FIG. 1
10 and encoder 14, and the component representative structure of the same symbol is similar to function, therefore module diagnostic and make flowing mode in this no longer
It repeats.Compared to Fig. 2, the encoder 44 of the present embodiment includes a magnetic filed generation unit, an additional circuit boards 443 and an ontology
444.Wherein additional circuit boards 443 are set to the one side of ontology 444, and can by but be not limited to be made of circuit board, can
Carry an at least electronic building brick.The magnetic filed generation unit of encoder 44 can by but be not limited to be made of the second pairs of magnetic pole 440,
Second pairs of magnetic pole 440 is rotatably arranged on the ontology 444 of encoder 44, further, is surround and is set in a manner of cricoid
It is placed in the outer rim side of ontology 444 of encoder 44, and is made of the poles a N magnet 441 and the poles a S magnet 442, therefore the second one-tenth
The poles N magnet 441 to magnetic pole 440 and the poles S magnet 442 generate direction by the poles N magnet 441 towards one group of magnetic force of the poles S magnet 442
Line.In addition, in the present embodiment, the shaft (not shown) in encoder 44 is actually connect with test system, and is produced from magnetic field
Raw unit, i.e., the second pairs of magnetic pole 44 then with the shaft of encoder 44 there is connection to close, therefore when test system rotates, coding
The shaft of device 44 is just rotated synchronously with test system, and the second pairs of magnetic pole 440 is driven to be rotated synchronously with test system, as this
Body 444 and additional circuit boards 443 then remain fixed when test system rotates.Further, compared to Fig. 2, self power generation
The the first Wiegand silk 100 and the second Wiegand silk 101 of module 40 are then changed to be set in a manner of dislocation in additional circuit boards 443.
When test system rotates, the shaft rotation of encoder 44 is just driven, and the shaft of encoder 44 then drives second
Pairs of magnetic pole 440 rotates, and the second pairs of magnetic pole 440 is made to generate changes of magnetic field, since the second pairs of magnetic pole 440 has one group of magnetic force
Line, therefore when one circle of the second pairs of magnetic pole 440 rotation makes one group of magnetic line of force of the second pairs of magnetic pole 440 change and generates magnetic field change
When change, the first Wiegand silk 100 actually just generates first arteries and veins according to changes of magnetic field caused by the second pairs of magnetic pole 440
Rush voltage P1, the second Wiegand silk 101 actually also generates one the according to changes of magnetic field caused by the second pairs of magnetic pole 440
Two pulse voltage P2 (as shown in Figure 1).And since (magnetic field generates single the second pairs of magnetic pole 440 of encoder 44 shown in Fig. 4
Member) the start principle between the first Wiegand silk 100 and the second Wiegand silk 101 is similar to shown in FIG. 1 has the first pairs of magnetic
Start principle between pole 104 and the first Wiegand silk 100 and the second Wiegand silk 101, therefore repeated no more in this.
In the above-described embodiments, the first Wiegand silk 100 and the second Wiegand silk 101 are similarly rectangular parallelepiped structure, and the first Wei
Root silk 100 along long side direction itself and towards be parallel to direction that additional circuit boards 443 are extended and the second Wiegand silk 101 along
Long side direction itself and towards be parallel to the direction that additional circuit boards 443 are extended junction formed an angle α (such as Fig. 5 institutes
Show), wherein ranging from 0 ° of angle α<α<90°.In addition, the first Wiegand silk 100 and the second Wiegand silk 101 dislocation direction (
That is the online direction of the first Wiegand silk 100 and the second Wiegand silk 101) it is parallel with the rotation direction of ontology 444 of encoder 44.
In conclusion the present invention provides a kind of self power generation absolute type code device, wherein self power generation absolute type coding dress
Setting tool, there are two Wiegand silks, are powered with the electric energy of generated two pulse voltages when two Wiegand silks are in changes of magnetic field
To the circuit inside self power generation absolute type code device, such as storage element and integrated circuit use, therefore compared to known
Self power generation absolute type code device is powered merely with single Wiegand silk, self power generation absolute type code device of the invention tool
There is preferably power supply effect.In addition, the integrated circuit of the self power generation absolute type code device of the present invention can also directly pass through rectification
Two pulse voltages caused by filtered two Wiegand silks are tied to judge the rotation direction of test system according to judgement
Fruit calculates the turnning circle of test system, test system when thus making encoder that can obtain test system rotation via operation
The rotation amount of shaft, therefore Hall sensor can need not need to be set to detect test system such as known self power generation absolute type code device
Rotation direction.
Finally it should be noted that:Above example is only used to illustrate the technical scheme of the present invention, rather than its limitations;Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that:It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features;
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (20)
1. a kind of self power generation absolute type code device, which is characterized in that the turnning circle for measuring a test system, thus
Angle when providing test system rotation counts, including:
One self power generation module has one first Wiegand silk, one second Wiegand silk and a magnetic filed generation unit, the magnetic filed generation unit
A changes of magnetic field is generated, the first Wiegand silk and the second Wiegand silk is made to generate at least one first respectively according to the changes of magnetic field
Pulse voltage and at least one second pulse voltage;
One rectification circuit, receives first pulse voltage and second pulse voltage, and by first pulse voltage and this second
Pulse voltage rectification;
One storage element is electrically connected with the rectification circuit, to receive first pulse voltage after rectification and second pulse electricity
There is provided electric energy is provided and is operated;And
One integrated circuit is electrically connected with the self power generation module, the rectification circuit and the storage element, receive after rectification this
Electric energy that one pulse voltage and second pulse voltage are provided and operate, and by after rectification first pulse voltage and this
Two pulse voltages filter, with according to after rectifying and wave-filtering first pulse voltage and second pulse voltage judge the test system
Rotation direction, and calculate according to judging result the turnning circle of the test system, the storage be written into the result after calculating
In memory cell;
One encoder is mutually communicated with the integrated circuit and the storage element, and is rotated synchronously with the test system, for by this
Integrated circuit and/or the storage element read the turnning circle for waiting for the survey device, and then provide when the test system rotates
Angle counts.
2. self power generation absolute type code device according to claim 1, which is characterized in that the magnetic filed generation unit has one
Shaft, two bearings and at least one first pairs of magnetic pole, the shaft is coaxial with the test system and rotates synchronously, two bearings
It is sheathed on respectively in the shaft, and positioned at the opposite sides of the first pairs of magnetic pole, which is set in the shaft, and
It is made of the poles a N magnet and the poles a S magnet.
3. self power generation absolute type code device according to claim 2, which is characterized in that the first Wiegand silk and this second
Wiegand silk is adjacent to the top between the pairs of magnetic pole and one of them bearing in a manner of misplacing, and the first Wiegand silk and should
The direction of second Wiegand silk dislocation is parallel with the rotation direction of the shaft.
4. self power generation absolute type code device according to claim 3, which is characterized in that first arteries and veins after rectifying and wave-filtering
It rushes between second pulse voltage after voltage and rectifying and wave-filtering with phase difference, and the angular dimension of the phase difference corresponds to this
The group number of pairs of magnetic pole.
5. self power generation absolute type code device according to claim 4, which is characterized in that the integrated circuit works as rectifying and wave-filtering
When first pulse voltage afterwards is changed into high levle voltage by low level voltage, second pulse electricity after rectifying and wave-filtering is detected
Pressure is high levle voltage or low level voltage, and the rotation direction of the test system is judged according to testing result.
6. self power generation absolute type code device according to claim 5, which is characterized in that when the integrated circuit is in the rectification
Filtered first pulse voltage detects second arteries and veins after rectifying and wave-filtering when being changed into high levle voltage by low level voltage
When to rush voltage be low level voltage, judge the rotation direction of the test system by the first Wiegand silk towards the second Wiegand silk
Direction rotates.
7. self power generation absolute type code device according to claim 5, which is characterized in that when the integrated circuit is in the rectification
Filtered first pulse voltage detects second arteries and veins after rectifying and wave-filtering when being changed into high levle voltage by low level voltage
When to rush voltage be high levle voltage, judge the rotation direction of the test system by the second Wiegand silk towards the first Wiegand silk
Direction rotates.
8. self power generation absolute type code device according to claim 3, which is characterized in that the first Wiegand silk and this second
Wiegand silk is rectangular parallelepiped structure, and the side that the first Wiegand silk is extended along long side direction itself and towards the magnetic electric field generating unit
One is formed to the junction in the direction extended towards the magnetic filed generation unit along long side direction itself with the second Wiegand silk
Angle.
9. self power generation absolute type code device according to claim 8, which is characterized in that the angle is more than 0 °, and is less than
90°。
10. self power generation absolute type code device according to claim 1, which is characterized in that the storage element is by a ferroelectricity
Random access memory is constituted, which is made of a special application integrated circuit.
11. a kind of self power generation absolute type code device, which is characterized in that the turnning circle for measuring a test system, by
Angle when this provides test system rotation counts, including:
One encoder has an ontology, an additional circuit boards and a magnetic filed generation unit, the magnetic filed generation unit and the dress to be measured
It is set on the ontology with setting synchronous rotation, and is synchronized when the test system rotates and be driven and generate a changes of magnetic field, it should
Additional circuit boards are set to the one side of the ontology;
One self power generation module, it is adjacent with the encoder to set, and with one first Wiegand silk, one second Wiegand silk, which is characterized in that
The first Wiegand silk and the second Wiegand silk are set in the additional circuit boards, and are generated respectively at least according to the changes of magnetic field
One first pulse voltage and at least one second pulse voltage;
One rectification circuit, receives first pulse voltage and second pulse voltage, and by first pulse voltage and this second
Pulse voltage rectification;
One storage element is electrically connected with the rectification circuit, to receive first pulse voltage after rectification and second pulse electricity
There is provided electric energy is provided and is operated;And
One integrated circuit is electrically connected with the self power generation module, the rectification circuit and the storage element, receive after rectification this
Electric energy that one pulse voltage and second pulse voltage are provided and operate, and by after rectification first pulse voltage and this
Two pulse voltages filter, with according to after rectifying and wave-filtering first pulse voltage and second pulse voltage judge the test system
Rotation direction, and calculate according to judging result the turnning circle of the test system, the storage be written into the result after calculating
In memory cell;
Wherein the encoder is also mutually communicated with the integrated circuit and/or the storage element, with by the integrated circuit and/or the storage
Memory cell reads the turnning circle of the test system, and then provides angle counting when test system rotation.
12. self power generation absolute type code device according to claim 11, which is characterized in that the magnetic filed generation unit has
One pairs of magnetic pole, the pairs of magnetic pole are surround in a manner of cricoid and are set in the outer rim side of the ontology, and by the poles a N magnet and one
The poles S magnet is constituted.
13. self power generation absolute type code device according to claim 12, which is characterized in that the ontology and the adjunct circuit
Plate is fixed when the test system rotates synchronously.
14. self power generation absolute type code device according to claim 13, which is characterized in that the first Wiegand silk and this
Two Wiegand silks are set in a manner of misplacing in the additional circuit boards, and the direction of the first Wiegand silk and the second Wiegand silk dislocation
It is parallel with the rotation direction of the ontology.
15. self power generation absolute type code device according to claim 14, which is characterized in that the first Wiegand silk and this
Two Wiegand silks are rectangular parallelepiped structure, and the first Wiegand silk is prolonged along long side direction itself towards the additional circuit boards are parallel to
The direction stretched and the second Wiegand silk are along long side direction itself and towards the friendship for being parallel to the direction that the additional circuit boards are extended
The place's of connecing shape has angle.
16. self power generation absolute type code device according to claim 15, which is characterized in that the angle is more than 0 °, and small
In 90 °.
17. self power generation absolute type code device according to claim 14, which is characterized in that after rectifying and wave-filtering this first
There is phase difference between second pulse voltage after pulse voltage and rectifying and wave-filtering.
18. self power generation absolute type code device according to claim 17, which is characterized in that the integrated circuit is filtered when rectification
When first pulse voltage after wave is changed into high levle voltage by low level voltage, second pulse after rectifying and wave-filtering is detected
Voltage is high levle voltage or low level voltage, and the rotation direction of the test system is judged according to testing result.
19. self power generation absolute type code device according to claim 18, which is characterized in that when the integrated circuit is whole in this
Flow after detecting rectifying and wave-filtering when filtered first pulse voltage is changed into high levle voltage by low level voltage this second
When pulse voltage is low level voltage, judge the rotation direction of the test system by the first Wiegand silk towards the second Wiegand silk
Direction rotation.
20. self power generation absolute type code device according to claim 18, which is characterized in that when the integrated circuit is whole in this
Flow after detecting rectifying and wave-filtering when filtered first pulse voltage is changed into high levle voltage by low level voltage this second
When pulse voltage is high levle voltage, judge the rotation direction of the test system by the second Wiegand silk towards the first Wiegand silk
Direction rotation.
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CN107650141A (en) * | 2017-03-02 | 2018-02-02 | 北京军立方机器人科技有限公司 | A kind of joint of mechanical arm |
CN107168160B (en) * | 2017-05-24 | 2019-04-26 | 广东盈动高科自动化有限公司 | Multi-turn method of counting and multi-turn counting device based on Wiegand sensor |
CN111457946A (en) * | 2020-05-21 | 2020-07-28 | 哈尔滨理工大学 | Self-generating magnetoelectric encoder |
CN111912436A (en) * | 2020-08-05 | 2020-11-10 | 广州彩熠灯光股份有限公司 | Self-powered rotation sensing device |
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CN201307121Y (en) * | 2008-10-31 | 2009-09-09 | 上海智大电子有限公司 | Encoder shifter |
DE102009034744A1 (en) * | 2009-02-24 | 2010-09-30 | Mehnert, Walter, Dr. | Absolute magnetic position sensor |
DE102012012874B4 (en) * | 2012-06-28 | 2019-06-19 | Sew-Eurodrive Gmbh & Co Kg | Arrangement for determining a number of revolutions of a rotatably mounted shaft and method for determining a number of revolutions of a rotatably mounted shaft |
CN103344262B (en) * | 2013-06-29 | 2016-09-28 | 宜昌盛开特电气有限公司 | Based on Wiegand effect rotate from power magnetoelectricity type multi-coil absolute value encoder |
CN104197965A (en) * | 2014-09-25 | 2014-12-10 | 南京埃斯顿自动化股份有限公司 | Multiturn rotary transformer |
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