CN204788428U - Many rings of absolute encoder of magnetic induction - Google Patents
Many rings of absolute encoder of magnetic induction Download PDFInfo
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- CN204788428U CN204788428U CN201520440521.9U CN201520440521U CN204788428U CN 204788428 U CN204788428 U CN 204788428U CN 201520440521 U CN201520440521 U CN 201520440521U CN 204788428 U CN204788428 U CN 204788428U
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Abstract
The utility model belongs to the technical field of the encoder technique and specifically relates to a many rings of absolute encoder of magnetic induction. The sun gear that the input shaft passes through the reduction gear is connected with gear no. 1, and gear no. 1, gear no. 2, gear no. 3, gear no. 4 and gear no. 5 mesh in proper order, and the top of gear no. 1, gear no. 2, gear no. 3, gear no. 4 and gear no. 5 is equipped with a magnet steel respectively, and five block encoding ware chips are established on the circuit board to encoder chip and upper computer connection are corresponded with the position of magnet steel. Compared with the prior art, the utility model, through clock and watch gear drive principle on the machinery, adopt the serial of daisy chain gang mould formula to read the AS5030 encoder chip of five interconnection on electric, constitutes the many rings of absolute encoder that a wide range, high accuracy, low cost, data signal were exported.
Description
Technical field
The utility model relates to encoder techniques field, specifically a kind of magnetic induction multi-turn absolute encoder.
Background technology
Along with the development of electric actuator technology, its position transducer also by original multiturn potentiometer gradually by multiturn rotary encoder is replaced, photo-electric encoder and magnetic inductive encoder can be divided into again according to its principle.
Photo-electric encoder is application optoelectronic induction principle, the electric signal produced by the space on code-disc or reflective surface groove reflects the angle position of rotating disk, then by the principle of watch gear machinery, when center code-disc rotates, by another group code dish of gear drive or multiple sets of teeth wheel, many group codes dish, the basis of individual pen code-disc increases the coding of multi-turn again, to expand the measurement range of scrambler.Such scrambler is just called photoelectricity multi-turn absolute encoder, and it determines coding by mechanical location, eachly position encodedly uniquely not to repeat, and without the need to remembering.
Magnetic inductive encoder adopts hall principle, the linear hall sensor of 2 mechanical location differences 90 degree is installed in the magnet steel side of central rotation, the sine wave that 2 phase differential are 90 degree can be obtained, numerical value theory of correspondences numerical value according to obtaining determines actual angle, then by the mechanical drive principle of similar photoelectricity multi-turn absolute encoder, magnetic induction multi-turn absolute encoder is formed.
Although the appearance of encoder solves the problem that actuator position detects, domestic independent research production multi-turn absolute encoder is also few, main cause:
Photo-electric multi-turn absolute encoder, owing to adopting many group codes dish structure, so small product size is large, do not meet the trend of current product miniaturization, and code-disc generally adopts ABS plastic, can not normally use in hot environment and vibration occasion.
Magnetic inductive multi-turn absolute encoder, owing to adopting 2 linear hall sensors, therefore requires pairing, and electrical specification requires identical.In addition, also have higher requirements to the installation site of 2 linear hall sensors, the distance from magnet steel must be identical.Often organize after signal must enter single-chip microcomputer process and just can be sent to mainboard, otherwise the sine wave signal of simulation is easily disturbed.
Therefore, the multi-turn absolute encoder designing a kind of wide range, high precision, low cost, digital signal output is needed.
Summary of the invention
The purpose of this utility model overcomes the deficiencies in the prior art, provides the multi-turn absolute encoder of a kind of wide range, high precision, low cost, digital signal output.
In order to achieve the above object, the utility model is a kind of magnetic induction multi-turn absolute encoder, it is characterized in that: input shaft is connected with gear one by the central gear of speed reduction unit, gear one, gear two, gear three, gear four and gear five engage successively, the top of gear one, gear two, gear three, gear four and gear five is respectively equipped with a magnet steel, five block encoder chips are established on circuit boards, and corresponding with the position of magnet steel, and encoder chip is connected with host computer.
The C2 port of the vdd terminal mouth of host computer, the vdd terminal mouth of five block encoder chips and the 5th block encoder chip is connected with 5V power end, the C2 port ground connection of the VSS port of host computer and the VSS port of five block encoder chips, C1 port and first to fourth block encoder chip, the Output port of host computer is connected with the CLK port of five block encoder chips, the I/O port of host computer is connected with the DIO port of five block encoder chips, and the DX port of each encoder chip is connected with the CS port of next encoder chip.
The 5th described block encoder chip is the encoder chip corresponding with the magnet steel position on gear five top.
First to fourth described block encoder chip is respectively the encoder chip corresponding with the magnet steel position on gear one, gear two, gear three, gear four top.
Described gear two, gear three, gear four and gear five is under drive gear.
Described circuit board is also provided with storer.
Described encoder chip model is AS5030, and encoder chip is provided with magnetic field shielding case.
Described host computer chip model is STM32F103ZET6.
The utility model compared with the existing technology, mechanically by watch gear transmission principle, five interconnected AS5030 encoder chip are read in the serial of electric upper employing daisy chain gang mould formula, form the multi-turn absolute encoder of a wide range, high precision, low cost, digital signal output.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is circuit diagram of the present utility model.
Fig. 3 is interface diagram of the present utility model.
Embodiment
Now by reference to the accompanying drawings the utility model is described further.
See Fig. 1 and Fig. 2, the utility model is a kind of magnetic induction multi-turn absolute encoder, input shaft 6 is connected with gear 1 by the central gear of speed reduction unit 7, gear 1, gear 22, gear 33, gear 44 and gear 55 engage successively, the top of gear 1, gear 22, gear 33, gear 44 and gear 55 is respectively equipped with a magnet steel 8, five block encoder chips 9 are established on the circuit board 10, and corresponding with the position of magnet steel 8, and encoder chip 9 is connected with host computer 12.
The C2 port of the vdd terminal mouth of host computer 12, the vdd terminal mouth of five block encoder chips 9 and the 5th block encoder chip is connected with 5V power end, the C2 port ground connection of the VSS port of host computer 12 and the VSS port of five block encoder chips 9, C1 port and first to fourth block encoder chip, the Output port of host computer 12 is connected with the CLK port of five block encoder chips 9, the I/O port of host computer 12 is connected with the DIO port of five block encoder chips 9, and the DX port of each encoder chip 9 is connected with the CS port of next encoder chip 9.
5th block encoder chip is the encoder chip 9 corresponding with magnet steel 8 position on gear 55 top.
First to fourth block encoder chip is respectively the encoder chip 9 corresponding with magnet steel 8 position on gear 1, gear 22, gear 33, gear 44 top.
Gear 22, gear 33, gear 44 and gear 55 is under drive gear, and every grade of corresponding transmission speed ratio is 8:1.
Circuit board 10 is also provided with storer 11, is convenient to storage coder initial zero position data, or deposits the significant data of host computer 12.
Encoder chip 9 model is AS5030, and cost performance is high, and production cost is low.AS5030 aly has 8 bit resolutions, identifiable design 256 positions within the scope of 360 °, a circle, and step value is 1.4 degree, and can provide the scrambler of digitalized data with the form of serial bit stream SSI and pulse-width modulation PWM signal.Data transmission can take 1 line: PWM, two-wire: CLK, DIO or 3 lines: the different modes such as CLK, DIO and CS.In conjunction with power-down mode with to start fast and measuring process, low-down power consumption can be realized, be equally applicable to battery powered equipment.Encoder chip 9 rotating speed can up to 30000rpm, working temperature :-40 ° of C to+125 ° of C.
Encoder chip 9 directly measures magnetic field intensity, can the vertical interval of Accurate Measurement magnet, is determined the rotational angle of each gear by the magnetic field intensity of the magnet steel 8 responding to these correspondences.Employing magnetic induction way is measured, can vibration resistance, is applicable to vibration occasion and measures.Encoder chip 9 is provided with magnetic field shielding case, to prevent the mutual interference in magnetic field, improves the accuracy of data.
Host computer chip model is STM32F103ZET6.
Scrambler adopts the data input host computer 12 after daisy chain pattern, be handled as follows in host computer 12 pairs of data: encoder chip 9 adopts 8 bit data, elementary precision measurement can be realized, and the transfer ratio of the second encoder chip owing to being 8:1 on gear 2, because 8 bit data are divided into 3 bit data by correspondence, the data acquisition of all the other 3 encoder chip is used, so the total data of scrambler can 8+3+3+3+3=20 position, resolution is high, large range measuring can be realized, test specification can reach 4096 circles, meet the demand of electric actuator range completely.If the following needs also having greater amount journey, can also expand.
See Fig. 3, internal mechanical drive mechanism of the present utility model is compact, and overall dimension is little.In figure, 13 is VCC pin, is 5V power end; 14 is CS pin, is sheet choosing end; 15 is GND pin, is earth terminal; 16 is CLK pin, is serial clock terminal; 17 is DIO pin, is data output end; 18 is SCL pin, is memory string row clock end; 19 is SDA pin, is serial data and/or addresses end.
Claims (7)
1. a magnetic induction multi-turn absolute encoder, it is characterized in that: input shaft (6) is connected with gear one (1) by the central gear of speed reduction unit (7), gear one (1), gear two (2), gear three (3), gear four (4) and gear five (5) engage successively, gear one (1), gear two (2), gear three (3), the top of gear four (4) and gear five (5) is respectively equipped with a magnet steel (8), five block encoder chips (9) are located on circuit board (10), and it is corresponding with the position of magnet steel (8), encoder chip (9) is connected with host computer (12), the vdd terminal mouth of host computer (12), the vdd terminal mouth of five block encoder chips (9) and the C2 port of the 5th block encoder chip are connected with 5V power end, the VSS port of host computer (12) and the VSS port of five block encoder chips (9), the C2 port ground connection of C1 port and first to fourth block encoder chip, the Output port of host computer (12) is connected with the CLK port of five block encoder chips (9), the I/O port of host computer (12) is connected with the DIO port of five block encoder chips (9), the DX port of each encoder chip (9) is connected with the CS port of next encoder chip (9).
2. a kind of magnetic induction multi-turn absolute encoder according to claim 1, is characterized in that: the 5th described block encoder chip is the encoder chip (9) corresponding with magnet steel (8) position on gear five (5) top.
3. a kind of magnetic induction multi-turn absolute encoder according to claim 1, is characterized in that: first to fourth described block encoder chip is respectively the encoder chip (9) corresponding with magnet steel (8) position on gear one (1), gear two (2), gear three (3), gear four (4) top.
4. a kind of magnetic induction multi-turn absolute encoder according to claim 1, is characterized in that: described gear two (2), gear three (3), gear four (4) and gear five (5) are under drive gear.
5. a kind of magnetic induction multi-turn absolute encoder according to claim 1, is characterized in that: described circuit board (10) is also provided with storer (11).
6. a kind of magnetic induction multi-turn absolute encoder according to claim 1, is characterized in that: described encoder chip (9) model is AS5030, and encoder chip (9) is provided with magnetic field shielding case.
7. a kind of magnetic induction multi-turn absolute encoder according to claim 1, is characterized in that: described host computer chip model is STM32F103ZET6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520440521.9U CN204788428U (en) | 2015-06-24 | 2015-06-24 | Many rings of absolute encoder of magnetic induction |
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| CN201520440521.9U CN204788428U (en) | 2015-06-24 | 2015-06-24 | Many rings of absolute encoder of magnetic induction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521200A (en) * | 2020-06-08 | 2020-08-11 | 哈尔滨理工大学 | Transverse multi-gear multi-ring magnetoelectric encoder |
| CN113799169A (en) * | 2021-10-22 | 2021-12-17 | 广东天太机器人有限公司 | Double-encoder joint module |
-
2015
- 2015-06-24 CN CN201520440521.9U patent/CN204788428U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521200A (en) * | 2020-06-08 | 2020-08-11 | 哈尔滨理工大学 | Transverse multi-gear multi-ring magnetoelectric encoder |
| CN111521200B (en) * | 2020-06-08 | 2022-08-23 | 哈尔滨理工大学 | Transverse multi-gear multi-ring magnetoelectric encoder |
| CN113799169A (en) * | 2021-10-22 | 2021-12-17 | 广东天太机器人有限公司 | Double-encoder joint module |
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