CN202885840U - Multi-loop magneto-electric absolute value encoder - Google Patents

Multi-loop magneto-electric absolute value encoder Download PDF

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Publication number
CN202885840U
CN202885840U CN 201220533379 CN201220533379U CN202885840U CN 202885840 U CN202885840 U CN 202885840U CN 201220533379 CN201220533379 CN 201220533379 CN 201220533379 U CN201220533379 U CN 201220533379U CN 202885840 U CN202885840 U CN 202885840U
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China
Prior art keywords
absolute value
value encoder
output shaft
those
magneto
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CN 201220533379
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Chinese (zh)
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裘奋
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Shanghai Gemple Mechanic & Electric Co Ltd
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Shanghai Gemple Mechanic & Electric Co Ltd
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Abstract

The utility model discloses a multi-loop magneto-electric absolute value encoder which comprises a speed change gear box and a magnetic induction circuit board. The speed change gear box includes an input shaft and a plurality of output shafts. A transformation ratio between one of the plurality of output shafts and the input shaft is 1, and transformation ratios between other output shafts and the input shaft are different to each other and is all greater than 1. An end portion of each output shaft is provided with a magnet. The magnetic induction circuit board is equipped with a plurality of induction chips which correspond to the magnets one by one. The multi-loop magneto-electric absolute value encoder has the advantages of multiple metering loops, high precision, reasonable metering structure and high durability.

Description

Multi-turn magneto-electric absolute value encoder
Technical field
The utility model relates to the measurement instrument field, particularly a kind of multi-turn magneto-electric absolute value encoder.
Background technology
Scrambler (encoder) is a kind of device that angular displacement or straight-line displacement is converted to electric signal.The former is called code-disc, and the latter claims yardstick. and according to the difference of data reading mode, scrambler can be divided into contact and contactless two kinds.Contact adopts brush output, represents that by brush contact conduction region or insulation layer the state of code is " 1 " or " 0 "; The contactless sensitive element of accepting comprises light activated element or magneto sensor, represents that with photic zone and light tight district the state of code is " 1 " or " 0 " when adopting light activated element.
As shown in Figure 1, existing multi-turn absolute value encoder comprises an input shaft 10, a code-disc 11, a plurality of light source 12, a shielding grating 13, a plurality of photoelectricity receiving element 14, a speed gear 15 and an output shaft (not marking among Fig. 1).During use, object to be measured drives this input shaft 10 rotations, and this input shaft 10 drives this speed gear 15 and slows down, and the torque of this speed gear 15 is by this output shaft output.This input shaft 10 whenever turns over a circle, and this output shaft just rotates some degree, and in other words, this output shaft whenever turns over a circle, and this input shaft 10 has turned over multi-turn.Therefore, this multi-turn absolute value encoder has been realized the purpose that multi-turn is measured.
Yet existing multi-turn absolute value encoder need to use code-disc 11 and shielding grating 13, and the use of these components and parts not only can increase the volume of multi-turn absolute value encoder, also can promote cost of manufacture.In addition, the durability of existing multi-turn absolute value encoder is also relatively poor.
Because the multi-turn absolute value encoder plays an important role at numerous areas such as mechanical tower crane, gate control, elevator regulation and control and mechanical measurements, and directly affect modernization construction, therefore, the research staff in absolute value encoder field thirsts for always developing that consumptive material is few, small volume, the metering number of turns is many, precision is high, measurement structure is reasonable and the much higher circle absolute value encoder of durability.
The utility model content
The technical problems to be solved in the utility model is that there is the defective that consumptive material is more, volume is large, the metering number of turns is few, precision is lower, measurement structure is reasonable not, durability is low and cost is higher in the multi-turn absolute value encoder in the prior art in order to overcome, a kind of multi-turn magneto-electric absolute value encoder is provided, and this multi-turn magneto-electric absolute value encoder has that consumptive material is less, small volume, the metering number of turns is many, precision is high, measurement structure is reasonable, durability is high and cost is low advantage.
The utility model is to solve above-mentioned technical matters by following technical proposals:
A kind of multi-turn magneto-electric absolute value encoder, it comprises a change speed gear box and a magnetic conduction circuitry plate, its characteristics are, this change speed gear box comprises an input shaft and a plurality of output shaft, the no-load voltage ratio of an output shaft and this input shaft equals 1 in those output shafts, the no-load voltage ratio of other output shaft and this input shaft is mutually unequal and all greater than 1 in those output shafts, the end of those output shafts is provided with a magnet, be provided with a plurality of induction chips on this magnetic conduction circuitry plate, those induction chips are corresponding one by one with those magnet.
Preferably, this change speed gear box comprises three output shafts, those output shafts are respectively the first output shaft, the second output shaft and the 3rd output shaft, and the no-load voltage ratio of this first output shaft, this second output shaft and the 3rd output shaft and this input shaft is respectively 1:1,64:1,4096:1.In the design situation that adopts layer by layer metering, those skilled in the art will above-mentioned no-load voltage ratio fix and are 64:1.The principle of work of this multi-turn magneto-electric absolute value encoder be similar to the mechanical clock tabular form second, minute, the time the stage metering mode, those skilled in the art can select the gear of different model fully, change the numerical value of those no-load voltage ratios.In addition, the number of those output shafts also needn't limit to into 3, and other is greater than 1 numerical value, and for example, 2 or 4 also is can solve the technical matters of this area and reach corresponding technique effect.
Preferably, this multi-turn magneto-electric absolute value encoder comprises a gearing, this gearing comprises that one has flange seat and a connection shaft of axis hole, this connection shaft and this axis hole are articulated, one end of this connection shaft is fixedly connected with this input shaft, and the other end of this connection shaft is used for being connected with an object to be measured.The setting of those gearings is to be fixedly connected with object to be measured for the ease of this change speed gear box.
Preferably, those magnet are cylindrical and in the same plane, and the external diameter of those magnet equates and be 2.5-3.5mm, and the spacing of each induction chip and the magnet corresponding with this induction chip is 0.5-1.5mm.During making, keeping the spacing of each induction chip and the magnet corresponding with this induction chip is 0.5-1.5mm, so that so that induction chip can accurately detect the changes of magnetic field of this magnet.
Preferably, those induction chips all are arranged on this magnetic conduction circuitry plate, also are provided with a process chip and a storer on this magnetic conduction circuitry plate, and those induction chips, this storer all intercom mutually with this process chip.
Positive progressive effect of the present utility model is:
This multi-turn magneto-electric absolute value encoder has that consumptive material is less, small volume, the metering number of turns is many, precision is high, measurement structure is reasonable, durability is high and cost is low advantage.
Description of drawings
Fig. 1 is the structural representation of existing multi-turn absolute value encoder.
Fig. 2 is the structural representation of the multi-turn magneto-electric absolute value encoder of the utility model embodiment 1.
Fig. 3 is the structural representation of the multi-turn magneto-electric absolute value encoder of the utility model embodiment 2.
Fig. 4 is the structural representation of the change speed gear box of the multi-turn magneto-electric absolute value encoder among Fig. 3.
Fig. 5 is the stereographic map of the shell body of the change speed gear box among Fig. 4.
Description of reference numerals:
Input shaft: 10 code-discs: 11
Light source: 12 shielding gratings: 13
Photoelectricity receiving element: 14 speed gears: 15
Change speed gear box: 2 magnetic conduction circuitry plates: 3
Gearing: 4 input shafts: 21
The first output shaft: 23 second output shafts: 24
The 3rd output shaft: 25 first magnet: 26
The second magnet: 27 the 3rd magnet: 28
Printed circuit board (PCB): 31 first induction chips: 32
The second induction chip: 33 the 3rd induction chips: 34
Shell body: 20 first delivery outlets: 203
The second delivery outlet: 204 the 3rd delivery outlets: 205
Embodiment
Provide the utility model preferred embodiment below in conjunction with accompanying drawing, to describe the technical solution of the utility model in detail.
Embodiment 1
As shown in Figure 2, the multi-turn magneto-electric absolute value encoder of present embodiment comprises a change speed gear box 2 and a magnetic conduction circuitry plate 3.This change speed gear box 2 comprises an input shaft 21 and three output shafts, and this output shaft is respectively the first output shaft 23, the second output shaft 24 and the 3rd output shaft 25.In those output shafts, this first output shaft 23 equals 1 with the no-load voltage ratio of this input shaft.In addition, the no-load voltage ratio of this second output shaft 24 and this input shaft no-load voltage ratio that equals 64, the three output shafts 25 and this input shaft equals 4096.The end of the end of the end of this first output shaft 23, this second output shaft 24 and the 3rd output shaft 25 is respectively arranged with the first magnet 26, the second magnet 27 and the 3rd magnet 28.Those magnet are flattened cylindrical shape (namely height is less than the cylinder of diameter) and in the same plane, and the external diameter of those magnet equates and be 2.5-3.5mm,
Corresponding to this first magnet 26, this second magnet 27 and the 3rd magnet 28, be provided with the first induction chip 32, the second induction chip 33 and the 3rd induction chip 34 on this magnetic conduction circuitry plate 3.The spacing of each induction chip and the magnet corresponding with this induction chip is 0.5-1.5mm.
This magnetic conduction circuitry plate comprises a printed circuit board (PCB) 31, this printed circuit board (PCB) 31 not only is arranged with this first induction chip 32, this second induction chip 33 and the 3rd induction chip 34, also be provided with a process chip and a storer, those induction chips, this storer all intercom mutually with this process chip.
During installation, this input shaft 21 is fixedly connected with an object to be measured.
During use, object to be measured drives this first output shaft 23 rotations by this input shaft 21, and this first output shaft 23 links mutually with this second output shaft 24 and the 3rd output shaft 25.Object to be measured, this input shaft 21, this first output shaft 23 and this first magnet 26 are rigidly connected mutually, it is 1 second angle of the every rotation of object to be measured, this first magnet 26 also rotates 1 second angle, and therefore, the precision of this multi-turn magneto-electric absolute value encoder is high.These the first magnet 26 revolutions 64 circles, this second magnet 27 turns around.These the second magnet 27 revolutions 64 circles, the 3rd magnet 28 turns around.Therefore, this second magnet 27 and the 3rd magnet 28 cooperatively interact and count altogether 4096 circles.Therefore, the metering number of turns of this multi-turn magneto-electric absolute value encoder is many.Above-mentioned linkage structure is similar to the clock and watch in the daily life, and namely this first magnet 26 is corresponding to second hand, and this second magnet 27 is corresponding to minute hand, and the 3rd magnet 28 adopt the layer by layer design of metering, so measurement structure is reasonable corresponding to hour hands.On this printed circuit board (PCB) 31, this process chip communicates by letter to realize operation result of measurement with those induction chips simultaneously, and computing is temporary in this storer., the metering number of turns identical with the individual pen absolute value encoder in precision reaches in the situations of 4096 circles, just only use a process chip and a storer, so consumptive material is less, and cost is lower.Keeping in the high-resolution situation of every circle, this multi-turn magneto-electric absolute value encoder can use three groups of magneto-electric induction sensors being on the plane and process chip to realize the measurement of multi-turn data.
In addition, the multi-turn absolute value encoder of present embodiment also has other intrinsic advantage of magnetic coder, for example, rotating speed is high, corresponding speed fast, dustproof grease proofing, the anti-vibration grade is high, debugging is convenient, Linear Driving and strong anti-interference performance etc.
Embodiment 2
For the ease of being fixedly connected with object to be measured, as shown in Figure 3, this multi-turn magneto-electric absolute value encoder also comprises a gearing 4, this gearing 4 comprises that one has flange seat 41 and a connection shaft 42 of axis hole, this connection shaft 42 is articulated with this axis hole, one end of this connection shaft 42 is fixedly connected with this input shaft 21, and the other end of this connection shaft 42 is used for being connected with an object to be measured.
As shown in Figure 4, this change speed gear box 2 comprises the first output shaft 23, the second output shaft 24 and the 3rd output shaft 25 of mutual interlock.As shown in Figure 5, this change speed gear box 2 also comprises a shell body 20, is provided with the first delivery outlet 203, the second delivery outlet 204 and the 3rd delivery outlet 205 on the gland bonnet of this shell body 20.
The multi-turn magneto-electric absolute value encoder of present embodiment has following improvement:
At first, use for reference the stage metering principle of mechanical clock, by change speed gear box and a plurality of induction chip, in the space of a compactness, realize the multi-turn measurement.
Secondly, this input shaft and this first output shaft can be rigidly connected, and can guarantee that concentricity is installed and measuring accuracy is consistent with the individual pen absolute value encoder, and namely precision is not affected.
Again, this second output shaft and the 3rd output shaft are realized the metering number of turns, can increase more multi-output shaft during actual production, realize the metering of the number of turns of more huge quantity.
At last, those induction chips and this process chip can be integrated in same printed circuit board (PCB) and in the same plane, this process chip is controlled those induction chips and is carried out synchronous data collection and processing, therefore hardware resource utilization efficient is high, and this process chip can be microcontroller (MCU), digital signal processor (DSP), CPLD (CPLD) or field programmable gate array (FPGA).
Although more than described embodiment of the present utility model, it will be understood by those of skill in the art that these only illustrate, protection domain of the present utility model is limited by appended claims.Those skilled in the art can make various changes or modifications to these embodiments under the prerequisite that does not deviate from principle of the present utility model and essence, but these changes and modification all fall into protection domain of the present utility model.

Claims (5)

1. multi-turn magneto-electric absolute value encoder, it comprises a change speed gear box and a magnetic conduction circuitry plate, it is characterized in that, this change speed gear box comprises an input shaft and a plurality of output shaft, the no-load voltage ratio of an output shaft and this input shaft equals 1 in those output shafts, the no-load voltage ratio of other output shaft and this input shaft is mutually unequal and all greater than 1 in those output shafts, the end of those output shafts is provided with a magnet, be provided with a plurality of induction chips on this magnetic conduction circuitry plate, those induction chips are corresponding one by one with those magnet.
2. multi-turn magneto-electric absolute value encoder as claimed in claim 1, it is characterized in that, this change speed gear box comprises three output shafts, those output shafts are respectively the first output shaft, the second output shaft and the 3rd output shaft, and the no-load voltage ratio of this first output shaft, this second output shaft and the 3rd output shaft and this input shaft is respectively 1:1,64:1,4096:1.
3. multi-turn magneto-electric absolute value encoder as claimed in claim 1, it is characterized in that, this multi-turn magneto-electric absolute value encoder comprises a gearing, this gearing comprises that one has flange seat and a connection shaft of axis hole, this connection shaft and this axis hole are articulated, one end of this connection shaft is fixedly connected with this input shaft, and the other end of this connection shaft is used for being connected with an object to be measured.
4. multi-turn magneto-electric absolute value encoder as claimed in claim 1, it is characterized in that, those magnet are cylindrical and in the same plane, and the external diameter of those magnet equates and be 2.5-3.5mm, and the spacing of each induction chip and the magnet corresponding with this induction chip is 0.5-1.5mm.
5. such as the described multi-turn magneto-electric of any one absolute value encoder among the claim 1-4, it is characterized in that, those induction chips all are arranged on this magnetic conduction circuitry plate, also be provided with a process chip and a storer on this magnetic conduction circuitry plate, those induction chips, this storer all intercom mutually with this process chip.
CN 201220533379 2012-10-17 2012-10-17 Multi-loop magneto-electric absolute value encoder Active CN202885840U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105277222A (en) * 2014-06-16 2016-01-27 上海鼎曦自动化科技有限公司 High-precision absolute value encoder
CN110940361A (en) * 2019-12-04 2020-03-31 北京科技大学 Magnetic sensitive multi-circle absolute value encoder
CN111197954A (en) * 2019-12-27 2020-05-26 深圳市越疆科技有限公司 Absolute position measuring method and device of machine, storage medium and machine
CN112461119A (en) * 2020-11-03 2021-03-09 中国空空导弹研究院 High-precision multi-coil magnetoelectric absolute value angle sensor and implementation method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105277222A (en) * 2014-06-16 2016-01-27 上海鼎曦自动化科技有限公司 High-precision absolute value encoder
CN110940361A (en) * 2019-12-04 2020-03-31 北京科技大学 Magnetic sensitive multi-circle absolute value encoder
CN111197954A (en) * 2019-12-27 2020-05-26 深圳市越疆科技有限公司 Absolute position measuring method and device of machine, storage medium and machine
CN111197954B (en) * 2019-12-27 2021-08-13 深圳市越疆科技有限公司 Absolute position measuring method and device of machine, storage medium and machine
CN112461119A (en) * 2020-11-03 2021-03-09 中国空空导弹研究院 High-precision multi-coil magnetoelectric absolute value angle sensor and implementation method
CN112461119B (en) * 2020-11-03 2022-06-28 中国空空导弹研究院 High-precision multi-coil magnetoelectric absolute value angle sensor and implementation method

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