CN108844557A - Encoder orthogonal sinusoidal wave producer production method - Google Patents
Encoder orthogonal sinusoidal wave producer production method Download PDFInfo
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- CN108844557A CN108844557A CN201810376098.9A CN201810376098A CN108844557A CN 108844557 A CN108844557 A CN 108844557A CN 201810376098 A CN201810376098 A CN 201810376098A CN 108844557 A CN108844557 A CN 108844557A
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- Prior art keywords
- gear
- encoder
- chip
- magnetic
- sinusoidal wave
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
Abstract
Movement (rotation or linear motion) target of a kind of gear that ferromagnetic material is done of the present invention or rack shapes, the magneto-dependent sensor that certain interval is directed at and had with target and is fixedly mounted, the sensor due to the two-way phase difference exported by mobile target motional induction be 180 ° analog sinus signals and with the latter linked phase signal converter circuit being made of PSoC System on Chip/SoC, the circuit realizes the mapping function that one chip completes complicated phase signal converter, export the phase difference that one group of encoder needs simultaneously as 90 ° of orthogonal sinusoidal wave signal, meet the input signal source demand of production magnetic coder, the precision that the signal source exports the subsequent sub-circuit of encoder is high, resolution ratio can be up to 20 multidigits；And the gear that does of ferromagnetic material or rack gear can be convenient any position being flexibly mounted in power-equipment and actuating unit, not limited by spatial position, can solve the actual installation problem in production.
Description
Technical field
The invention belongs to encoder required for the power-equipment of automation field and actuating unit with it is orthogonal just
How string wave producer production method, the signal source for particularly relating to encoder generate.
Background technique
In 106330013 A patent of CN：A kind of magnetic coding permanent-magnet synchronous method for electric car driving.It is to utilize
The round magnet steel on rotary shaft head does circumferential magnetic field scanning to the magnetic coder chip for having certain distance and fixation, makes magnetic coder
Chip output increment angle and absolute angle signal.
And in CN 101010565A patent：Device including magnetic field sensor.Equally with it is above-mentioned be by multi-stage cross magnetic pole
Be mounted on rotary body or parallel motion body on, fixed magneto-resistive transducing chip generates cyclical signal.
The magnetic encoder of above two patent, their signal producing method are all the magnetic installed by rotary shaft end
Pole (steel) incudes the magnetoelectricity sensitive chip of shaft end installation spaced apart and generates signal；Such power is set in engineering
Standby and actuating unit shaft end position will install magnetic pole (steel), while again magnetoelectricity sensitive chip and encoder housing,
When being fixedly mounted on the same side of axial end portion with bracket, installation site thus is increased in the end of axis, but in reality
Engineering in, due to being limited by installation space position, highlight insurmountable installation question at this time；And encoder output
Signal coding resolution ratio it is not high only 10.
Summary of the invention
The purpose of the present invention：In order to overcome the shortcomings of the prior art, invented a kind of gear that ferromagnetic material is done or
Movement (rotation or linear motion) target of rack shapes, the magnetic that certain interval is directed at and had with target and is fixedly mounted
Dependent sensor, the phase letter which is connected due to the signal exported by mobile target motional induction with subsequent circuit
The orthogonal sine wave signal of one group of encoder needs is outputed under number converter collective effect.
The present invention is achieved by the following technical solutions：It is recycled and is made with the tooth top and tooth socket of a kind of ferromagnetic gear or rack gear
At the magnetic susceptibility chip center position of magneto-dependent sensor；Ferromagnetic gear used or rack gear, which can be convenient, to be flexibly mounted on
Any position in power-equipment and actuating unit, do not limited thus by spatial position, very good solution production
In actual installation problem；
It is not less than 1 millimeter of gap location in said gear or the tooth tip of rack gear, is fixedly installed with magneto-dependent sensor, the biography
Sensor is successively close to the ferromagnetic sheet placed and biasing magnet steel, common group of their this three parts by magnetosensitive sense chip and the chip back
At magneto-dependent sensor；
Also in the central area of magnetic susceptibility chip interior there are two magnetic sensitive probe spaced apart, in design gear or
When the odontoid size of rack gear, keep the center size of tooth top and tooth socket equal with the size of space of two magnetic sensitive probes, while magnetic
The size of space direction of quick probe is consistent with gear or rack gear rotation or linear movement direction；
Again when gear or rack gear are rotated or moved along a straight line, tooth top and tooth socket pass through the magnetosensitive sense chip of magneto-dependent sensor
Change of magnetic field strength is sensed when two magnetic sensitive probes of inside, just generates differential signal, differential signal amplitude is by difference magnetic field
Intensity effect, difference magnetic field signal is stronger, then the differential signal generated is stronger, otherwise weaker；Magnetic susceptibility chip interior due to
Be integrated with application-specific integrated circuit ASIC, the circuit can by differential signal enhanced processing, to be transformed to two-way phase difference be 180 ° of mould
Quasi- sinusoidal signal；
The analog sinus signals that this two-way phase difference by the output of above-mentioned magnetosensitive sense chip is 180 °, in subsequent connection one
The phase signal converter being made of PSoC System on Chip/SoC is transformed to the orthogonal sinusoidal wave signal that phase difference is 90 °, to reach
Meet the requirement of the input signal source of magnetic coder.
Detailed description of the invention
Fig. 1 shows for structure scheme of installation of the invention.
Fig. 2 is expressed as circuit structure composition schematic diagram of the invention.
Specific embodiment
Below in conjunction with attached drawing, the present invention is further illustrated.In addition, being omitted or simplified to PSoC system chipset
At phase signal converter correlative technology field technical staff it will be appreciated that structure and principle and its effect specifically
It is bright, and be described in detail centered on the part of composition related to the present invention.
As shown in Figure 1：With the tooth top 8 and 9 ringing of tooth socket of a kind of gear that ferromagnetic material is done 20 or rack gear 30 in magnetic
The 3 front center position of magnetosensitive sense chip of dependent sensor 6, and spaced apart 7；
At 8 gap 7 of tooth top not less than 1 millimeter of gear 20 or rack gear 30, magneto-dependent sensor 6 is installed, the sensing
Device is by magnetosensitive sense chip 3 and the chip back and is successively close to be placed with ferromagnetic sheet 4 and biasing magnet steel 5, their this three parts are total
It is same to constitute magneto-dependent sensor 6；
Central area inside magnetosensitive sense chip 3 there are two magnetic sensitive probe 1 and magnetic sensitive probe 2 spaced apart,
When the odontoid size of design gear 20 or rack gear 30, make the center size 10 and two magnetic sensitive probes of tooth top 8 and tooth socket 9
1 is equal with the size of space of magnetic sensitive probe 2, while the size of space direction of magnetic sensitive probe 1 and magnetic sensitive probe 2 and gear 20 or tooth
The rotation of item 30 or linear movement direction are consistent；
When gear 20 or rack gear 30 are rotated or moved along a straight line, tooth top 8 and tooth socket 9 pass through the magnetosensitive of magneto-dependent sensor 6
When magnetic sensitive probe 1 and magnetic sensitive probe 2 inside sense chip 3, they two are respectively induced different magnetic field strengths, this magnetic field difference
Value just generates differential signal in portion's integrated circuit in the chip, and the amplitude of differential signal is influenced by difference magnetic field strength, difference magnetic
Field is stronger, then the differential signal generated is stronger, otherwise weaker；And dedicated collection also has been internally integrated in magnetosensitive sense chip 3
At circuit ASIC, the phase difference which can be transformed to differential signal enhanced processing, simulated cushioned etc. two-way output is 180 °
Analog sinus signals；
Then, as shown in Figure 2, a phase signal converter is connected in the output end of above-mentioned 6 circuit of magneto-dependent sensor
40, the analog sinus signals that above-mentioned two-way phase difference is 180 ° by it are transformed to the two-way orthogonal sinusoidal wave that phase difference is 90 °
Signal, so as to meet the input signal source utilized by encoder；
This phase signal converter 40 in Fig. 2, the Cypress PSoC System on Chip/SoC for being, it is mixed signal
Programmable chip is a kind of ideal on-chip system chip；It is not only integrated with micro-control reason device inside it, has also been integrated with achievable
The analog device of multiple configuration, digital device and touch the circuits such as several hybrid devices；It passes through the Integrated Development of PSoC System on Chip/SoC
Platform designs UART communication module, EEPROM module, timer mould with programming language using the flexible modularization resource of chip
The functional modules such as block, DAC module, PGA module and LPF2 module；Pass through UART communication module receiving front-end magneto-dependent sensor 6
Two-way phase difference output be 180 ° of analog sinus signals, then by above-mentioned resume module, last phase difference output is 90 °
Two-way orthogonal sinusoidal wave signal realizes that one chip completes the mapping function of complicated phase signal converter, reaches the present invention
Purpose：Orthogonal sinusoidal wave producer；The input signal source demand for meeting production encoder, after which makes encoder
Precision after sub-circuit output is high, and resolution ratio can be up to 20 multidigits.
Claims (6)
1. a kind of encoder orthogonal sinusoidal wave producer production method, it is characterised in that：The gear or tooth made of ferromagnetic material
Movement (rotation or linear motion) target of strip, the magnetosensitive that certain interval is directed at and had with target and is fixedly mounted
Sensor, the phase signal which is connected due to the signal exported by mobile target motional induction with subsequent circuit
The orthogonal sine wave signal of one group of encoder needs is outputed under converter collective effect.
2. the orthogonal sinusoidal wave producer production method of this encoder according to claim 1, it is characterised in that：This
The tooth top and tooth socket ringing of the ferromagnetic gear of kind or rack gear are at the magnetic susceptibility chip center position of magneto-dependent sensor；Used
Ferromagnetic gear or rack gear can be convenient any position being flexibly mounted in power-equipment and actuating unit, thus not
It is limited by spatial position, the actual installation problem in very good solution production.
3. according to claim 1 with described in 2 in this encoder orthogonal sinusoidal wave producer production method, it is characterised in that：
Said gear or the tooth tip of rack gear are not less than 1 millimeter of gap location, are fixedly installed with magneto-dependent sensor, the sensor is by magnetosensitive
Sense chip and the chip back are successively close to the ferromagnetic sheet placed and biasing magnet steel, their this three parts have collectively constituted magnetosensitive biography
Sensor.
4. this encoder orthogonal sinusoidal wave producer production method according to claim 2, it is characterised in that：In magnetosensitive
There are two magnetic sensitive probes spaced apart for central area inside sense chip, in the odontoid size of design gear or rack gear
When, keep the center size of tooth top and tooth socket equal with the size of space of two magnetic sensitive probes, while the size of space of magnetic sensitive probe
Direction is consistent with gear or rack gear rotation or linear movement direction.
5. this encoder orthogonal sinusoidal wave producer production method according to claim 4, it is characterised in that：In gear
Or rack gear, when rotating or moving along a straight line, tooth top and tooth socket are visited by two magnetosensitives of the magnetic susceptibility chip interior of magneto-dependent sensor
Change of magnetic field strength is sensed when head, just generates differential signal, differential signal amplitude is influenced by difference magnetic field strength, difference magnetic field
Signal is stronger, then the differential signal generated is stronger, otherwise weaker；In magnetic susceptibility chip interior due to being integrated with specific integrated circuit
ASIC, the circuit can by differential signal enhanced processing, to be transformed to two-way phase difference be 180 ° of analog sinus signals.
6. this encoder orthogonal sinusoidal wave producer production method according to claim 5, it is characterised in that：Above-mentioned magnetic
The analog sinus signals that this two-way phase difference of dependent sensor output is 180 °, in subsequent connection one by PSoC system chipset
At phase signal converter, being transformed to phase difference is 90 ° of orthogonal sinusoidal wave signal, realize one chip complete it is complicated
The mapping function of phase signal converter, to reach the requirement for meeting the input signal source of magnetic coder, which makes this
The precision of the subsequent sub-circuit output of kind magnetic coder is high, and resolution ratio can be up to 20 multidigits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810376098.9A CN108844557A (en) | 2018-04-23 | 2018-04-23 | Encoder orthogonal sinusoidal wave producer production method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810376098.9A CN108844557A (en) | 2018-04-23 | 2018-04-23 | Encoder orthogonal sinusoidal wave producer production method |
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| Publication Number | Publication Date |
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| CN108844557A true CN108844557A (en) | 2018-11-20 |
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| CN201810376098.9A Pending CN108844557A (en) | 2018-04-23 | 2018-04-23 | Encoder orthogonal sinusoidal wave producer production method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111337058A (en) * | 2020-03-02 | 2020-06-26 | 长春禹衡光学有限公司 | Gear type encoder reading head |
| US11248971B2 (en) | 2018-02-02 | 2022-02-15 | Analog Devices International Unlimited Company | Magnetic field torque and/or angle sensor |
| US11460323B2 (en) | 2021-02-05 | 2022-10-04 | Analog Devices International Unlimited Company | Magnetic field sensor package |
| US11637482B2 (en) | 2020-10-08 | 2023-04-25 | Analog Devices International Unlimited Company | Magnetic sensor system for motor control |
Citations (6)
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|---|---|---|---|---|
| EP0394942A2 (en) * | 1989-04-26 | 1990-10-31 | Canon Kabushiki Kaisha | A signal insertion processor and an encoder using the processor |
| US6038890A (en) * | 1998-07-29 | 2000-03-21 | Pai Lung Machinery Mill Co., Ltd. | Circular knitting machine shut-down positioning and needle/feeder position control method |
| US20030128027A1 (en) * | 2001-12-08 | 2003-07-10 | Reinhard Buchhold | Arrangement for detecting motion of an encoder |
| CN102359753A (en) * | 2011-07-27 | 2012-02-22 | 重庆理工大学 | Linear displacement sensor |
| CN104374412A (en) * | 2014-11-14 | 2015-02-25 | 陆丕清 | Magnetic field structure for magnetic induction gear encoder |
| CN106625020A (en) * | 2017-02-27 | 2017-05-10 | 张道勇 | Incremental magnetic induction bus type encoder for high-speed high-precision machine tool main shaft and electric main shaft |
-
2018
- 2018-04-23 CN CN201810376098.9A patent/CN108844557A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0394942A2 (en) * | 1989-04-26 | 1990-10-31 | Canon Kabushiki Kaisha | A signal insertion processor and an encoder using the processor |
| US6038890A (en) * | 1998-07-29 | 2000-03-21 | Pai Lung Machinery Mill Co., Ltd. | Circular knitting machine shut-down positioning and needle/feeder position control method |
| US20030128027A1 (en) * | 2001-12-08 | 2003-07-10 | Reinhard Buchhold | Arrangement for detecting motion of an encoder |
| CN102359753A (en) * | 2011-07-27 | 2012-02-22 | 重庆理工大学 | Linear displacement sensor |
| CN104374412A (en) * | 2014-11-14 | 2015-02-25 | 陆丕清 | Magnetic field structure for magnetic induction gear encoder |
| CN106625020A (en) * | 2017-02-27 | 2017-05-10 | 张道勇 | Incremental magnetic induction bus type encoder for high-speed high-precision machine tool main shaft and electric main shaft |
Non-Patent Citations (1)
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| 曾义芳: "《DSP基础知识及系列芯片》", 30 November 2006, 北京航空航天大学出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11248971B2 (en) | 2018-02-02 | 2022-02-15 | Analog Devices International Unlimited Company | Magnetic field torque and/or angle sensor |
| CN111337058A (en) * | 2020-03-02 | 2020-06-26 | 长春禹衡光学有限公司 | Gear type encoder reading head |
| CN111337058B (en) * | 2020-03-02 | 2021-12-03 | 长春禹衡光学有限公司 | Gear type encoder reading head |
| US11637482B2 (en) | 2020-10-08 | 2023-04-25 | Analog Devices International Unlimited Company | Magnetic sensor system for motor control |
| US11460323B2 (en) | 2021-02-05 | 2022-10-04 | Analog Devices International Unlimited Company | Magnetic field sensor package |
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Application publication date: 20181120 |