CN105651317A - Absolute encoder and operation method thereof - Google Patents
Absolute encoder and operation method thereof Download PDFInfo
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- CN105651317A CN105651317A CN201510010290.2A CN201510010290A CN105651317A CN 105651317 A CN105651317 A CN 105651317A CN 201510010290 A CN201510010290 A CN 201510010290A CN 105651317 A CN105651317 A CN 105651317A
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Abstract
An absolute encoder comprising: the magnetic induction type encoder comprises a central magnet and an outer ring magnet, wherein the central magnet and the outer ring magnet are concentrically arranged on a rotating shaft, a magnetic induction type encoder, a magnetic induction component and a controller. The magnetic induction type encoder is used for measuring the rotation angle of the rotating shaft in a single circle, and the magnetic induction component is used for sensing the magnetic pole change when the magnet rotates so as to output a square wave signal containing a high level signal and a low level signal. The controller is used for receiving the square wave signal and converting the received square wave signal into a rotation number signal.
Description
Technical field
The present invention relates to a kind of absolute encoding device and working method thereof, say the absolute encoding device and the working method thereof that relate to a kind of angle position that can measure in rotating shaft list circle and measure the rotating cycle of rotating shaft more specifically.
Background technology
Device is surveyed in the sense that encoder (Encoder) is used to detection angles, position, speed and acceleration. When for motor device, by input information such as position of rotation or rotation amount, by having the logical circuit of encoding function, analogy or digital signal can be converted to. Common encoder type such as has mechanical type, optical profile type and magneticinduction formula. Encoder functionally also can be divided into increment type and absolute type.
Generally speaking, incremental encoder can only be used for the information providing current position relative to prior location, that is, can only be used for obtaining relative position signal. On the other hand, incremental encoder does not have the function of the current absolute location of memory yet. Therefore; incremental encoder is applied on motor device; when motor device power-off; if mechanical location moves because of external force or rotates and change; position is caused to produce skew, and when motor device restarts, because incremental encoder cannot obtain current absolute position signal; also just cannot judge the signal recorded before whether the signal of current position is same as shutdown, thus must adjust the flow process that encoder carries out initial point involution.
Being different from incremental encoder, absolute encoding device is except the function having incremental encoder, moreover it is possible to realize the measurement of absolute location. That is, can the instant rotating shaft angle of rotation of output motor equipment or the absolute value of position. When sending a telegram in reply after motor device power-off, absolute encoding device can read the absolute value signal when front rotary shaft angle of rotation or position immediately again.
The absolute encoding device of widespread use mostly is photoelectric type in the industrial production. But, shock resistance, the anti-vibration of the grating dish of optical-electricity encoder are low. Therefore when the grating dish of optical-electricity encoder is when pivoting, it is easy to because axle vibration makes grating dish broken. On the other hand, the environmental compatibility of optical-electricity encoder is poor, and the resistivity for moisture, dust and temperature variation is more weak.
In view of this, electromechanical equipment develops into the absolute encoding device using magneticinduction formula gradually now, magneticinduction formula coder structure is simple, speed of response is fast and environment interference is strong.Dealer sells multiple magneticinduction formula encoder wafer on the market at present, one of them is a kind of noncontact formula magnetic rotary encoder device, single element is integrated Huo Er element, analogy front end and digital signal processing capacity, encloses the angle of rotation in 360 �� of gamuts for accurate measurement motor device in one. Use, only need to arranging corresponding to the simple bipolar magnet that wafer center position rotates at the relative position of wafer, usual described magnet can be arranged in the rotating shaft of motor device, with the axis of rotation of motor device, and by the change of magnetic pole, be converted to specific position signal.
But, above-mentioned absolute encoding device wafer is after rotation is more than a circle, and coding will return to initial point. When motor device normal operation, often need by additional logical circuit, in order to the rotation number of turns that auxiliary record is current. If during the data of the rotation number of turns that motor device power-off and loss record, after motor device restarts, even if described absolute encoding device can read out current absolute position signal, but cannot learn in the rotation which current rotating shaft position enclosed at, therefore must expend time in and carry out the initial point involution flow process of rotating shaft.
Summary of the invention
It is an object of the invention to provide a kind of absolute encoding device and working method thereof, it can when motor device power-off, record and calculate the rotating cycle of rotating shaft, and after motor device restarts, measures the angle of rotation of rotating shaft in single circle and obtains the current rotating cycle signal of rotating shaft.
In order to achieve the above object, the present invention provides a kind of absolute encoding device, and it comprises: a central magnet and an outer ring magnet, described central magnet and described outer ring magnet are arranged in a rotating shaft with one heart; One magneticinduction formula encoder, the central location interval that corresponding described central magnet rotates is arranged, for measuring the angle of rotation of described rotating shaft in single circle; One magneticinduction assembly, for responding to pole change when described outer ring magnet rotates, to export the square wave signal that comprises high level signal and low level signal; And a controller, it is electrically connected with described magneticinduction assembly, for receiving described square wave signal, and according to the described square wave signal received, is converted to a rotating cycle signal.
In the middle of a wherein preferred embodiment of the present invention, when described magneticinduction assembly senses the arctic of described outer ring magnet, export described high level signal, and when described magneticinduction assembly senses the South Pole of described outer ring magnet, export described low level signal.
In the middle of a wherein preferred embodiment of the present invention, described magneticinduction assembly comprises one first Huo Er element and one the 2nd Huo Er element, described first Huo Er element and described 2nd Huo Er element are adjacent to described magneticinduction formula encoder arrange respectively, and the line of described first Huo Er element and described magneticinduction formula encoder, and the line shape of described 2nd Huo Er element and described magneticinduction formula encoder has angle; Pole change when outer ring magnet described in described first Huo Er element senses rotates, exports the first square wave signal, and pole change when outer ring magnet described in described 2nd Huo Er element senses rotates, and exports second party ripple signal.
In the middle of a wherein preferred embodiment of the present invention, described angle angle is between 80 degree to 90 degree.
In the middle of a wherein preferred embodiment of the present invention, the described first square wave signal that described first Huo Er element exports and the described second party ripple signal that described 2nd Huo Er element exports have 90 degree of phase differential.
In the middle of a wherein preferred embodiment of the present invention, when rotating shaft is for rotating forward, described controller receives the rising edge that described first Huo Er element exports described first square wave signal, and described 2nd Huo Er element exports described low level signal, or described controller receives the falling edge that described first Huo Er element exports described first square wave signal, and described 2nd Huo Er element exports described high level signal.
In the middle of a wherein preferred embodiment of the present invention, when rotating shaft is for reversing, described controller receives the rising edge that described first Huo Er element exports described first square wave signal, and described 2nd Huo Er element exports described high level signal, or described controller receives the falling edge that described first Huo Er element exports described first square wave signal, and described 2nd Huo Er element exports described low level signal.
In the middle of a wherein preferred embodiment of the present invention, when described controller receives the rising edge that described 2nd Huo Er element exports described second party ripple signal, and when described first Huo Er element exports described high level signal, the counting of described rotating cycle signal is added one by described controller.
In the middle of a wherein preferred embodiment of the present invention, when described controller receives the rising edge that described first Huo Er element exports described first square wave signal, and when described 2nd Huo Er element exports described high level signal, the counting of described rotating cycle signal is subtracted one by described controller.
In the middle of a wherein preferred embodiment of the present invention, described absolute encoding device comprises a battery further, described controller comprises a mnemon, in order to record described rotating cycle signal, when described rotating shaft stops rotating, described battery provides an electric current to described magneticinduction assembly and described mnemon.
In the middle of a wherein preferred embodiment of the present invention, described controller comprises a removing function, in order to receive a removing lap signal, and the described rotating cycle signal zero that will record.
The present invention also provides a kind of absolute encoding device working method, it is applicable to a motor device and described motor device at least comprises a central magnet and an outer ring magnet, described central magnet and described outer ring magnet are arranged in a rotating shaft with one heart, and described absolute encoding device comprises a magneticinduction formula encoder, the central location interval that corresponding described central magnet rotates is arranged, for measuring the angle of rotation of described rotating shaft in single circle, one magneticinduction assembly, with a controller, it is electrically connected with described magneticinduction assembly, described method comprises the following step: judge whether the power supply of described motor device is opened, if, described motor device enters an operating mode, if not, described motor device enters a dormancy pattern, when described motor device enters described dormancy pattern, judge whether described rotating shaft rotates, if, pole change when the described magneticinduction assembly described outer ring magnet of induction rotates, export the square wave signal that comprises high level signal and low level signal, if not, described motor device remains on described dormancy pattern, described controller is using the rising edge of described square wave signal or falling edge as a triggering signal, described controller according to current received described square wave signal, is converted to a rotating cycle signal after receiving triggering signal.
In the middle of a wherein preferred embodiment of the present invention, current described triggering signal and previous described triggering signal phase differential are 90 degree.
In the middle of a wherein preferred embodiment of the present invention, when described magneticinduction assembly senses the arctic of described outer ring magnet, export described high level signal, and when described magneticinduction assembly senses the South Pole of described outer ring magnet, export described low level signal.
In the middle of a wherein preferred embodiment of the present invention, described magneticinduction assembly comprises one first Huo Er element and one the 2nd Huo Er element, described first Huo Er element and described 2nd Huo Er element are adjacent to described magneticinduction formula encoder arrange respectively, and the line of described first Huo Er element and described magneticinduction formula encoder, and the line shape of described 2nd Huo Er element and described magneticinduction formula encoder has angle; Pole change when outer ring magnet described in described first Huo Er element senses rotates, exports the first square wave signal, and pole change when outer ring magnet described in described 2nd Huo Er element senses rotates, and exports second party ripple signal.
In the middle of a wherein preferred embodiment of the present invention, when described controller receives the rising edge that described first Huo Er element exports described first square wave signal, and described 2nd Huo Er element is when exporting described low level signal, or when described controller receives the falling edge that described first Huo Er element exports described first square wave signal, and described 2nd Huo Er element is when exporting described high level signal, described controller judges that described rotating shaft is as rotating forward.
In the middle of a wherein preferred embodiment of the present invention, when described controller receives the rising edge that described first Huo Er element exports described first square wave signal, and described 2nd Huo Er element is when exporting described high level signal, or when described controller receives the falling edge that described first Huo Er element exports described first square wave signal, and described 2nd Huo Er element is when exporting described low level signal, described controller judges that described rotating shaft is as reversing.
In the middle of a wherein preferred embodiment of the present invention, when controller receives the rising edge that described 2nd Huo Er element exports described second party ripple signal, and when described first Huo Er element exports described high level signal, the counting of described rotating cycle signal is added one by described controller; When described controller receives the rising edge that described first Huo Er element exports described first square wave signal, and when described 2nd Huo Er element exports described high level signal, the counting of described rotating cycle signal is subtracted one by described controller.
In the middle of a wherein preferred embodiment of the present invention, described absolute encoding device comprises a battery further, and described controller comprises a mnemon, in order to record described rotating cycle signal, when described motor device is when described dormancy pattern, described battery provides an electric current to described magneticinduction assembly and described mnemon.
In the middle of a wherein preferred embodiment of the present invention, under described dormancy pattern, the described electric current that described mnemon and described magneticinduction assembly consume is less than 50 �� A.
In the middle of a wherein preferred embodiment of the present invention, described absolute encoding device working method comprises input one removing lap signal further to controller, the described rotating cycle signal zero that will record.
Accompanying drawing explanation
Figure 1A illustrates the absolute encoding device of the present invention.
Figure 1B illustrates the local view of the absolute encoding device of the present invention.
Fig. 2 illustrates the circuit block diagram of the absolute encoding device of the present invention.
Fig. 3 A illustrates the square wave signal that the magneticinduction assembly of the present invention exports when ring magnet rotates forward outside.
Fig. 3 B illustrates the square wave signal that the magneticinduction assembly of the present invention exports when ring magnet reverses outside.
Fig. 4 illustrates the absolute encoding device flow chart of the present invention.
Fig. 5 illustrates the judgement rotating cycle signal flow figure of the absolute encoding device of the present invention.
Embodiment
The preferred embodiments of the present invention are described in detail by accompanying drawing and explanation below, and in various figures, identical element symbol represents same or similar element.
Please refer to Figure 1A and Figure 1B, Figure 1A illustrates the absolute encoding device of the present invention, and Figure 1B illustrates the local view of the absolute encoding device of the present invention. Absolute encoding device 100 comprises the central magnet 140 and outer ring magnet 145, magneticinduction assembly 110, controller 120, magneticinduction formula encoder 130 and circuit card 160 that are arranged at one heart in rotating shaft 150. On the central axial line that magneticinduction formula encoder 130 rotates at central magnet 140, and the central axial line position that rotates of corresponding central magnet 140 and the setting of magnet 140 interval.
Magneticinduction assembly 110 is adjacent with magneticinduction formula encoder 130, and and outer ring magnet 145 interval arrange. Magneticinduction assembly 110 is for responding to pole change when outer ring magnet 145 rotates, and exports corresponding square wave signal. More particularly, as shown in Figure 1B, outer ring magnet 145 is bipolar magnet, for example, when the external form of the outer ring magnet 145 of the present invention is annular, a wherein semi-circular of outer ring magnet 145 is the arctic (N pole), and second half annular is then the South Pole (S pole). Therefore, when outer ring magnet 145 rotates along with rotating shaft 150, magneticinduction assembly 110, when sensing the N pole of outer ring magnet 145, exports high level signal, otherwise, when magneticinduction assembly 110 senses the S pole of outer ring magnet 145, export low level signal.
The present invention is by arranging two different magnet (central magnet 140 and outer ring magnet 145) in rotating shaft 150 with corresponding magneticinduction formula encoder 130 and magneticinduction assembly 110 respectively, thus can avoid when central magnet 140 and magneticinduction assembly 110 each other hypertelorism time, magneticinduction assembly 110 because of external signal interference cause the problem that cannot export corresponding high level signal or low level signal accurately.
According to a preferred embodiment of the invention, magneticinduction assembly 110 can comprise the first Huo Er element 112 and the 2nd Huo Er element 114 further. First Huo Er element 112 and the 2nd Huo Er element 114 are adjacent to magneticinduction formula encoder 130 arrange respectively, and the line of the first Huo Er element 112 and magneticinduction formula encoder 130, and the line shape of the 2nd Huo Er element 114 and magneticinduction formula encoder 130 has angle. According to embodiments of the invention, described angle angle is between 80 degree to 90 degree.
Controller 120 and magneticinduction assembly 110 are electrically connected. Controller 120 receives the square wave signal that magneticinduction assembly 110 exports, and the described square wave signal received is converted to rotating cycle signal. More particularly, when magneticinduction assembly 110 senses that outer ring magnet 145 rotates, magnetic pole alternately changes between N pole and S pole, then according to sensing that the N pole output packet extremely corresponding to S contains the square wave signal of high level signal and lower level number. Controller 120 receive magneticinduction assembly 110 export square wave signal, judge current outer ring magnet 145 for rotate forward or reverse, and rotate the number of turns, then the rotating cycle signal of gained is recorded be stored in controller 120 inside.In addition, according to another preferred embodiment of the invention, controller 120 comprises mnemon further, for recording rotating cycle signal.
On the central axial line that magneticinduction formula encoder 130 rotates at central magnet 140, and the central axial line position that corresponding central magnet 140 rotates, and central magnet 140 interval arranges. Magneticinduction formula encoder 130 is noncontact formula magnetic rotary encoder device, integrates Huo Er element, analogy front end and digital signal processing capacity in single element. Magneticinduction formula encoder 130 is on using, and when rotating shaft 150 being rotated, the change of corresponding the produced magnetic pole of central magnet 140, is converted to specific position signal, thus the angle of rotation 170 of accurate measurement rotating shaft 150 in single circle.
According to a preferred embodiment of the invention, magneticinduction assembly 110, controller 120 and magneticinduction formula encoder 130 can be arranged on same circuit card 160.
Please refer to Fig. 2, Fig. 2 illustrates the circuit block diagram of the absolute encoding device of the present invention. When the absolute encoding device of the present invention is applied to a motor device, under motor device normal operation, the outside power supply 280 of motor device external circuit 270 provides electrical power to the circuit card 160 of absolute encoding device. The voltage that outside power supply 280 provides through voltage conversion unit 161, is converted to operating voltage after entering circuit card 160. Described outside power supply 280 is mainly in order to provide the first Huo Er element 112 in circuit card 160, the 2nd Huo Er element 114, controller 120 and magneticinduction formula encoder 130 to operate required electric power. The change of the magnetic pole that magneticinduction formula encoder 130 produces when rotating according to central magnet 140, is converted to specific signal, A, B and Z signal of such as position and angle, thus can angle of rotation in single circle of the rotating shaft of accurate measurement motor device. The pole change of the rotating shaft that controller 120 receives the first Huo Er element 112 and the 2nd Huo Er element 114 induction motor equipment outer ring magnet when rotated, the corresponding square wave signal exported, and then export corresponding rotating cycle signal Rx.
In addition, outside power supply 280 is understood again through overcharge circuit 162, in order to charge to electric capacity 284 after being converted to operating voltage. Therefore, when motor device power-off, even if outside power supply 280 no longer provides electrical power to the circuit card 160 of absolute encoding device, circuit card 160 provides required electric power by electric capacity 284. According to a preferred embodiment of the invention, the battery 282 comprising an outside further is electrically connected with circuit card 160. Therefore, when outside power supply 280 is stopped power supply, also continue to provide electrical power to circuit card 160 by battery 282. In addition, circuit card 160 inside comprises detecting voltage unit 163,165 and Power convert switch 164. Detecting voltage unit 163 is for detecting outside power supply 280 and the current voltage of electric capacity 284, and the signal that Power convert switch 164 transmits according to detecting voltage unit 163, switching is provided to the power source of the first Huo Er element 112, the 2nd Huo Er element 114 and controller 120, described power source be outside power supply 280, battery 282 or electric capacity 284 one of them.
It should be appreciated that according to Fig. 2, when, under motor device normal operation, outside power supply 280 can provide electrical power to magneticinduction formula encoder 130, first Huo Er element 112, the 2nd Huo Er element 114 and controller 120. When outside power supply 280 is stopped power supply, first Huo Er element 112, the 2nd Huo Er element 114 and controller 120 continue power supply by electric capacity 284 or battery 282, more particularly, electric capacity 284 or battery 282 are not used in and provide electrical power to magneticinduction formula encoder 130.According to a preferred embodiment of the invention, when outside power supply 280 is stopped power supply and motor device without under rotating, electric capacity 284 or battery 282 only can provide electrical power to the mnemon 122 of the first Huo Er element 112, the 2nd Huo Er element 114 and controller 120. It should be noted that, mnemon 122 current sinking of the first Huo Er element 112, the 2nd Huo Er element 114 and controller 120 is less than 50 �� A, make the absolute encoding device of the present invention when without external power source, relatively low current consumption can be remained on, reach the function of power saving. That is, the data of rotating cycle signal Rx stored by controller 120 memory internal unit 122 can not be lost because motor device has a power failure for a long time.
According to a preferred embodiment of the invention, controller 120 comprises removing function further, removes lap signal D in order to receive, the described rotating cycle signal zero that will record.
Please refer to Fig. 3 A and Fig. 3 B. Fig. 3 A illustrates the square wave signal that the magneticinduction assembly of the present invention exports when ring magnet rotates forward outside. Fig. 3 B illustrates the square wave signal that the magneticinduction assembly of the present invention exports when ring magnet reverses outside. According to a preferred embodiment of the invention, the magneticinduction assembly of the present invention comprises the first Huo Er element and the 2nd Huo Er element further. In Fig. 3 A and Fig. 3 B, the first square wave signal H1 that the first Huo Er element exports and the second party ripple signal H2 that the 2nd Huo Er element exports has 90 degree of phase differential. When outer ring magnet rotates forward, the phase place of the first square wave signal H1 that the first Huo Er element exports is front; When outer ring magnet reverses, the phase place of the second party ripple signal H2 that the 2nd Huo Er element exports is front.
As shown in Figure 3A, when rotating shaft is for rotating forward, controller can receive the rising edge that the first Huo Er element exports the first square wave signal H1, and the 2nd Huo Er element currently exports as low level signal L, or controller can receive the falling edge that the first Huo Er element exports the first square wave signal H1, and the 2nd Huo Er element currently exports as high level signal H. Otherwise, with reference to shown in Fig. 3 B, when rotating shaft is for reversing, controller can receive the rising edge that the first Huo Er element exports the first square wave signal H1, and the 2nd Huo Er element currently exports as high level signal H, or controller can receive the falling edge that the first Huo Er element exports the first square wave signal H1, and the 2nd Huo Er element currently exports as low level signal L.
The present invention also provides a kind of absolute encoding device working method being applicable to motor device. Please refer to Fig. 4, Fig. 4 illustrates the absolute encoding device flow chart of the present invention.
Motor device at least comprises the central magnet 140 being arranged in rotating shaft 150 as shown in FIG. 1A and 1B and outer ring magnet 145, and described absolute encoding device comprises magneticinduction formula encoder 130 as shown in FIG. 1A and 1B, for measuring the angle of rotation 170 of rotating shaft 150 in single circle, magneticinduction assembly 110 and controller 120. Described method comprises the following step, and first, step S410, judges whether the power supply of motor device is opened, if it does, then perform step S430, motor device enters operating mode; If not, then performing step S420, motor device enters dormancy pattern. When described motor device enters described dormancy pattern, performing step S440, judge whether described rotating shaft rotates, if it does, then perform step S450, pole change when magneticinduction assembly outer ring magnet of induction rotates, exports square wave signal; If not, then performing step S420, motor device remains on dormancy pattern.According in step S450, pole change when magneticinduction assembly outer ring magnet of induction rotates, the square wave signal exported, and then execution step S460, controller is using the rising edge of square wave signal or falling edge as triggering signal. After controller receives triggering signal, then performing step S470, controller, according to current received square wave signal, is converted to rotating cycle signal; If controller does not receive triggering signal, then remain in dormancy pattern.
When motor device enters the operating mode of step S430, it is provide electrical power to absolute encoding device by outside power supply; When motor device enters the dormancy pattern of step S420, it is that the battery by being electrically connected with absolute encoding device provides electric power.
According to a preferred embodiment of the invention, magneticinduction assembly can comprise the first Huo Er element and the 2nd Huo Er element further. As shown in Figure 3 A and Figure 3 B, the first Huo Er element exports the first square wave signal H1 and the second party ripple signal H2 that the 2nd Huo Er element exports has 90 degree of phase differential. Please refer to shown in Fig. 5 and Fig. 3 A, Fig. 3 B, Fig. 5 illustrates the judgement rotating cycle signal flow figure of the absolute encoding device of the present invention.
First, in step S510, motor device enters dormancy pattern. After motor device enters described dormancy pattern, perform step S520, judge whether controller receives triggering signal, if it does, then perform step S530, S532, S534 or S536 according to received triggering signal; If not, then performing step S510, motor device remains on dormancy pattern. Triggering signal in step S530, S532, S534 and S536 is respectively, the falling edge (S536) that the first Huo Er element exports the rising edge (S530) of the first square wave signal, the first Huo Er element exports the first square wave signal falling edge (S532), the 2nd Huo Er element export the rising edge (S534) of second party ripple signal, the 2nd Huo Er element exports second party ripple signal.
Various different triggering signal received by step S530, S532, S534 and S536, perform step S540, S542, S544 or S546 more respectively, judgement sends the square wave signal that another Huo Er element of triggering signal exports, and is currently high level signal or low level signal. For example, step S530 and S532 represents the first Huo Er element respectively and exports the rising edge of the first square wave signal or the triggering signal of falling edge, therefore step S540 and S542 judges whether the 2nd Huo Er element currently exports high level signal, with reason, step S534 and S536 represents the 2nd Huo Er element respectively and exports the rising edge of second party ripple signal or the triggering signal of falling edge, and therefore step S544 and S546 judges whether the first Huo Er element currently exports high level signal.
According to the result judged in step S540, S542, S544 or S546, to obtain the current sense of rotation of outer ring magnet representative in step S551��S558 and rotating cycle. More particularly, with reference to shown in Fig. 3 A and Fig. 3 B, the 0th district that the second party ripple signal H2 that the first square wave signal H1 exported by the first Huo Er element and the 2nd Huo Er element export divides is to the 3rd district, being be divided into 4 regions in order to represent to rotate in a circle outer ring magnet, wherein the 0th district represents initial point. That is, when receiving the signal triggering the 0th district when controller, namely can increase or reduce rotating cycle. Therefore, in Fig. 5, step S551��S558 represents respectively: the 0th district, reverse (S551);3rd district, clockwise (S552); 1st district, clockwise (S553); 2nd district, reverse (S554); 0th district, clockwise (S555); 3rd district, reverse (S556); 1st district, reverse (S557); 2nd district, clockwise (S558). It is understandable that, when controller receives the rising edge (S534) that the 2nd Huo Er element exports second party ripple signal, and judge that the first Huo Er element exports as (S544) during low level signal, represent outer ring magnet be clockwise at present and through the 0th district (S555), therefore, controller can perform step S562, and the counting of rotating cycle signal adds 1. With reason, when controller receives the rising edge (S530) that the first Huo Er element exports the first square wave signal, and judge that the 2nd Huo Er element exports as (S540) during high level signal, represent outer ring magnet at present for reverse and through the 0th district (S551), therefore, controller performs step S560, and the counting of rotating cycle signal subtracts 1.
Although the present invention discloses as above by preferred embodiment; so itself and be not used to limit the present invention; the ordinary technical staff in the technical field of the invention; without departing from the spirit and scope of the present invention; when being used for a variety of modifications and variations, therefore the scope of protection of present invention is when being as the criterion depending on the Claims scope person of being defined.
Claims (22)
1. an absolute encoding device, it is characterised in that, comprise:
One central magnet and an outer ring magnet, described central magnet and described outer ring magnet are arranged in a rotating shaft with one heart;
One magneticinduction formula encoder, the central location interval that corresponding described central magnet rotates is arranged, for measuring the angle of rotation of described rotating shaft in single circle;
One magneticinduction assembly, for responding to pole change when described outer ring magnet rotates, to export the square wave signal that comprises high level signal and low level signal; And
One controller, is electrically connected with described magneticinduction assembly, for receiving described square wave signal, and described square wave signal is converted to a rotating cycle signal.
2. absolute encoding device as claimed in claim 1, it is characterized in that, when described magneticinduction assembly senses the arctic of described outer ring magnet, export described high level signal, and when described magneticinduction assembly senses the South Pole of described outer ring magnet, export described low level signal.
3. absolute encoding device as claimed in claim 1, it is characterized in that, described magneticinduction assembly comprises one first Huo Er element and one the 2nd Huo Er element, described first Huo Er element and described 2nd Huo Er element are adjacent to described magneticinduction formula encoder arrange respectively, and the line of described first Huo Er element and described magneticinduction formula encoder, and the line shape of described 2nd Huo Er element and described magneticinduction formula encoder has angle; Pole change when outer ring magnet described in described first Huo Er element senses rotates, exports the first square wave signal, and pole change when outer ring magnet described in described 2nd Huo Er element senses rotates, and exports second party ripple signal.
4. absolute encoding device as claimed in claim 3, it is characterised in that, described angle angle is between 80 degree to 90 degree.
5. absolute encoding device as claimed in claim 3, it is characterised in that, the described first square wave signal that described first Huo Er element exports and the described second party ripple signal that described 2nd Huo Er element exports have 90 degree of phase differential.
6. absolute encoding device as claimed in claim 3, it is characterized in that, when rotating shaft is for rotating forward, described controller receives the rising edge that described first Huo Er element exports described first square wave signal, and described 2nd Huo Er element exports described low level signal, or described controller receives the falling edge that described first Huo Er element exports described first square wave signal, and described 2nd Huo Er element exports described high level signal.
7. absolute encoding device as claimed in claim 3, it is characterized in that, when rotating shaft is for reversing, described controller receives the rising edge that described first Huo Er element exports described first square wave signal, and described 2nd Huo Er element exports described high level signal, or described controller receives the falling edge that described first Huo Er element exports described first square wave signal, and described 2nd Huo Er element exports described low level signal.
8. absolute encoding device as claimed in claim 3, it is characterized in that, when described controller receives the rising edge that described 2nd Huo Er element exports described second party ripple signal, and when described first Huo Er element exports described high level signal, the counting of described rotating cycle signal is added one by described controller.
9. absolute encoding device as claimed in claim 3, it is characterized in that, when described controller receives the rising edge that described first Huo Er element exports described first square wave signal, and when described 2nd Huo Er element exports described high level signal, the counting of described rotating cycle signal is subtracted one by described controller.
10. absolute encoding device as claimed in claim 1, it is characterized in that, described absolute encoding device comprises a battery further, described controller comprises a mnemon, in order to record described rotating cycle signal, when described rotating shaft stops rotating, described battery provides an electric current to described magneticinduction assembly and described mnemon.
11. absolute encoding devices as claimed in claim 1, it is characterised in that, described controller comprises a removing function, in order to receive a removing lap signal, the described rotating cycle signal zero that will record.
12. 1 kinds of absolute encoding device working method, it is characterized in that, described absolute encoding device working method is applicable to a motor device and described motor device at least comprises a central magnet and an outer ring magnet, described central magnet and described outer ring magnet are arranged in a rotating shaft with one heart, and described absolute encoding device comprises a magneticinduction formula encoder, the central location interval that corresponding described central magnet rotates is arranged, for measuring the angle of rotation of described rotating shaft in single circle, one magneticinduction assembly, with a controller, it is electrically connected with described magneticinduction assembly, described method comprises the following step:
Judging whether the power supply of described motor device is opened, if it does, described motor device enters an operating mode, if not, described motor device enters a dormancy pattern;
When described motor device enters described dormancy pattern, judge whether described rotating shaft rotates, if, pole change when the described magneticinduction assembly described outer ring magnet of induction rotates, export the square wave signal that comprises high level signal and low level signal, if not, described motor device remains on described dormancy pattern;
Described controller is using the rising edge of described square wave signal or falling edge as a triggering signal; And
After described controller receives described triggering signal, be converted to a rotating cycle signal according to current received described square wave signal.
13. absolute encoding device working method as claimed in claim 12, it is characterised in that, current described triggering signal and previous described triggering signal phase differential are 90 degree.
14. absolute encoding device working method as claimed in claim 12, it is characterized in that, when described magneticinduction assembly senses the arctic of described outer ring magnet, export described high level signal, and when described magneticinduction assembly senses the South Pole of described outer ring magnet, export described low level signal.
15. absolute encoding device working method as claimed in claim 12, it is characterized in that, described magneticinduction assembly comprises one first Huo Er element and one the 2nd Huo Er element, described first Huo Er element and described 2nd Huo Er element are adjacent to described magneticinduction formula encoder arrange respectively, and the line of described first Huo Er element and described magneticinduction formula encoder, and the line shape of described 2nd Huo Er element and described magneticinduction formula encoder has angle; Pole change when outer ring magnet described in described first Huo Er element senses rotates, exports the first square wave signal, and pole change when outer ring magnet described in described 2nd Huo Er element senses rotates, and exports second party ripple signal.
16. absolute encoding device working method as claimed in claim 15, it is characterised in that, described angle angle is between 80 degree to 90 degree.
17. absolute encoding device working method as claimed in claim 15, it is characterized in that, when described controller receives the rising edge that described first Huo Er element exports described first square wave signal, and described 2nd Huo Er element is when exporting described low level signal, or when described controller receives the falling edge that described first Huo Er element exports described first square wave signal, and described 2nd Huo Er element is when exporting described high level signal, described controller judges that described rotating shaft is as rotating forward.
18. absolute encoding device working method as claimed in claim 15, it is characterized in that, when described controller receives the rising edge that described first Huo Er element exports described first square wave signal, and described 2nd Huo Er element is when exporting described high level signal, or when described controller receives the falling edge that described first Huo Er element exports described first square wave signal, and described 2nd Huo Er element is when exporting described low level signal, described controller judges that described rotating shaft is as reversing.
19. absolute encoding device working method as claimed in claim 15, it is characterized in that, when controller receives the rising edge that described 2nd Huo Er element exports described second party ripple signal, and when described first Huo Er element exports described high level signal, the counting of described rotating cycle signal is added one by described controller; When described controller receives the rising edge that described first Huo Er element exports described first square wave signal, and when described 2nd Huo Er element exports described high level signal, the counting of described rotating cycle signal is subtracted one by described controller.
20. absolute encoding device working method as claimed in claim 12, it is characterized in that, described absolute encoding device comprises a battery further, and described controller comprises a mnemon, in order to record described rotating cycle signal, when described motor device is when described dormancy pattern, described battery provides an electric current to described magneticinduction assembly and described mnemon.
21. absolute encoding device working method as claimed in claim 20, it is characterised in that, under described dormancy pattern, the described electric current that described mnemon and described magneticinduction assembly consume is less than 50 �� A.
22. absolute encoding device working method as claimed in claim 12, it is characterised in that, described absolute encoding device working method comprises input one removing lap signal further to controller, the described rotating cycle signal zero that will record.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW103138067A TW201617586A (en) | 2014-11-03 | 2014-11-03 | Absolute encoder and method for operating the same |
| TW103138067 | 2014-11-03 |
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| Publication Number | Publication Date |
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| CN105651317A true CN105651317A (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510010290.2A Pending CN105651317A (en) | 2014-11-03 | 2015-01-09 | Absolute encoder and operation method thereof |
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| CN (1) | CN105651317A (en) |
| TW (1) | TW201617586A (en) |
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| CN111006696A (en) * | 2019-12-16 | 2020-04-14 | 横店集团英洛华电气有限公司 | Magnetic encoder and angle calculation method thereof |
| CN112337036A (en) * | 2020-10-16 | 2021-02-09 | 安徽东方造集模块化建筑有限公司 | Electronic counting device for skipping rope |
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| CN101576396A (en) * | 2008-06-02 | 2009-11-11 | 上海源致信息技术有限公司 | Absolute magnetic-electric rotary encoder with low cost, high accuracy and multiple circles |
| US20110018528A1 (en) * | 2009-07-24 | 2011-01-27 | Marco Semineth | Method and device for determining the actuation position of an adjusting element of a motor vehicle |
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Also Published As
| Publication number | Publication date |
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| TW201617586A (en) | 2016-05-16 |
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