CN113155018A - Magnetoelectric angular displacement sensor - Google Patents
Magnetoelectric angular displacement sensor Download PDFInfo
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- CN113155018A CN113155018A CN202110394400.5A CN202110394400A CN113155018A CN 113155018 A CN113155018 A CN 113155018A CN 202110394400 A CN202110394400 A CN 202110394400A CN 113155018 A CN113155018 A CN 113155018A
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- magnetoelectric
- displacement sensor
- angular displacement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
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Abstract
The invention discloses a magnetoelectric angular displacement sensor, which comprises an angular displacement sensor module, a power supply conversion module, a magnetoelectric sensor chip and a magnetic encoder, wherein the angular displacement sensor module is connected with the power supply conversion module, the power supply conversion module realizes power supply conversion by using a voltage regulator, the power supply conversion module is connected with the magnetoelectric sensor chip, the magnetoelectric sensor chip is connected with the magnetic encoder, and the chip can output corresponding encoded angle signals along with the rotation of a magnetic field parallel to the surface of the chip. The problems existing in the prior art are well solved.
Description
Technical Field
The invention relates to the technical field of magnetoelectric angular displacement sensors, in particular to a magnetoelectric angular displacement sensor.
Background
The magnetoelectric angular displacement sensor is a novel position sensor which detects through the principle of magnetic induction, and physical signals such as an angle position, an angular velocity, a rotating speed and the like are converted into electrical signals such as a magnetic field, voltage and the like through electromagnetic induction so as to be used for subsequent measurement processing. The magnetic encoder has high reliability, high precision, good anti-seismic performance, dust particle prevention, high rotating speed, simple installation and debugging, small volume and easy realization of miniaturization, is gradually developed and becomes the mainstream encoder in the market at present, and is widely applied to sensitive positions such as servo drive, war industry and aerospace industry. In addition, the magnetic encoder is not influenced by weather, is resistant to pollution and corrosion, and is widely used for replacing the positions of a rotary transformer and a photoelectric encoder under severe environment conditions. The magnetic encoder is mainly classified into a magnetoresistor type magnetic encoder based on an electromagnetic group effect and a hall type magnetic encoder based on a hall effect.
At present, with the development and popularization of electronic technology, the aviation servo valve control technology is widely applied to the original microcontroller, but software programming is introduced into the application of the microcontroller, so that the response speed is low, and the cost is high.
Disclosure of Invention
The present invention is directed to a magnetoelectric angular displacement sensor, which solves the above problems.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a magnetoelectric angle displacement sensor, includes angle displacement sensor module, power transform module, magnetoelectric sensor chip and magnetic encoder, the power transform module is connected to the angle displacement sensor module, the power transform module utilizes voltage regulator to realize the power transform, the magnetoelectric sensor chip is connected to the power transform module, magnetoelectric sensor chip connects magnetic encoder, and magnetoelectric sensor chip is along with the rotation that is on a parallel with the magnetic field on chip surface, and the corresponding angle signal through the coding can be exported to the chip.
Preferably, the application provides a magnetoelectric angular displacement sensor, wherein, the power conversion module includes LDO voltage regulator, LDO voltage regulator VIN end is connecting resistance one end and electric capacity 2a one end respectively, electric capacity 2a one end is connected to LDO voltage regulator EN end, and the SS end is through electric capacity 3a ground connection, electric capacity 1a is indirect between the resistance other end and the electric capacity 2a other end, LDO voltage regulator ADJ end, OUT termination VCC end, GND end and EPAD end all ground connection, still connect electric capacity 4a between LDO voltage regulator ADJ end and the earthing terminal.
Preferably, the present application provides a magnetoelectric angular displacement sensor, wherein, magnetoelectric sensor chip passes through SPI connection controller.
Preferably, the magnetoelectric angular displacement sensor provided by the application, wherein, the magnetic encoder adopts EN-C3A4 magnetoelectric incremental encoder.
Preferably, the magnetoelectric angular displacement sensor provided by the application, wherein the controller meets the standard of data output DA level according to the CLK clock given by the DSP, and meets the RS-422 interface level requirement of +5V power supply.
Compared with the prior art, the invention has the beneficial effects that: the magnetoelectric angular displacement sensor module is used in the consumption and industrial fields of position feedback control, rotation control and the like of various motors. The power supply conversion circuit realizes power supply conversion by using the voltage regulator; the chip of the magnetoelectric sensor can output corresponding coded angle signals along with the rotation of the magnetic field parallel to the surface of the chip; the control circuit feeds back the angular displacement position with 12-bit precision under the action of the control signal. Meanwhile, the pure hardware design reduces the software investment cost, avoids the software failure risk and improves the response speed of the system.
Drawings
FIG. 1 is a control schematic of the present invention;
FIG. 2 is a timing diagram of the SPI communication according to the present invention;
FIG. 3 is a circuit diagram of a power conversion module according to the present invention;
FIG. 4 is a block diagram of the electrical redundancy design of the controller of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-4, the present invention provides a technical solution: a magnetoelectric angular displacement sensor comprises an angular displacement sensor module 1, a power supply conversion module 2, a magnetoelectric sensor chip 3 and a magnetic encoder 4, wherein the angular displacement sensor module 1 is connected with the power supply conversion module 2, the power supply conversion module 2 realizes power supply conversion by using a voltage regulator, the power supply conversion module 2 is connected with the magnetoelectric sensor chip 3, the magnetoelectric sensor chip 3 is connected with the magnetic encoder 4, and the chip can output corresponding encoded angle signals along with the rotation of a magnetic field parallel to the surface of the chip by the magnetoelectric sensor chip 3; the magnetic encoder 4 adopts an EN-C3A4 magnetoelectric incremental encoder.
As shown in fig. 2, the SPI peripheral may be used as a master and a slave for communication, Fclk/2 supporting the highest SCK clock frequency, and fully supporting the 4-mode SPI protocol, and the data frame length may be set to 8 bits or 16 bits, and the data MSB first or LSB first may be set. It also supports two-wire full duplex, two-wire singleton and single-wire modes. The MOSI can be used simultaneously in the two-wire single-item mode, the MISO data line can transmit data in one direction, the data transmission speed can be doubled, the hardware connection can be reduced in the single-wire mode, and the speed can be influenced.
Data is read on the falling edge and written on the rising edge, and the chip select signal needs to be pulled up once after each command (12 bits of data) is sent.
In the invention, the power supply conversion module 2 comprises an LDO voltage regulator 5, the VIN end of the LDO voltage regulator 5 is respectively connected with one end of a resistor 6 and one end of a capacitor B2a, the EN end of the LDO voltage regulator 5 is connected with one end of a capacitor B2a, the SS end is grounded through a capacitor C3a, a capacitor A1a is connected between the other end of the resistor 6 and the other end of the capacitor B2a, the ADJ end and the OUT end of the LDO voltage regulator 5 are connected with a VCC end, the GND end and the EPAD end are both grounded, and a capacitor D4a is further connected between the ADJ end of the LDO voltage regulator 5 and a ground end. The LDO voltage regulator is used for converting an input +5V direct current power supply into a +3.3V direct current power supply. Electromagnetic interference (EMI) causes a degradation of the transmission path of the device or the system performance, and the electronic system is interfered mainly by infiltration of power, signal lines or control cables. The circuit is designed to solve the problem of electromagnetic compatibility by adding a proper inductor to a power inlet to cut off an interference source or a coupling path.
In the invention, a CPU control circuit meets the level requirement of an RS-422 interface supplied with power by +5V according to a CLK clock and data output DA level standard given by a DSP. The magnetic encoder 4 adopts an EN-C3A4 magnetoelectric incremental encoder, angular displacement is collected at any time, and the speed meets the precision and meets the technical index.
In summary, the magnetoelectric angular displacement sensor module of the invention is used in the consumption and industrial fields of position feedback control, rotation control and the like of various motors. The power supply conversion circuit realizes power supply conversion by using the voltage regulator; the chip of the magnetoelectric sensor can output corresponding coded angle signals along with the rotation of the magnetic field parallel to the surface of the chip; the control circuit feeds back the angular displacement position with 12-bit precision under the action of the control signal. Meanwhile, the pure hardware design reduces the software investment cost, avoids the software failure risk and improves the response speed of the system.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. A magnetoelectric angular displacement sensor is characterized in that: including angle displacement sensor module (1), power conversion module (2), magnetoelectric sensor chip (3) and magnetic encoder (4), power conversion module (2) is connected in angle displacement sensor module (1), power conversion module (2) utilizes voltage regulator to realize the power transformation, magnetoelectric sensor chip (3) is connected in power conversion module (2), magnetic encoder (4) is connected in magnetoelectric sensor chip (3), and corresponding angle signal through the encoding can be exported along with the rotation in the magnetic field that is on a parallel with the chip surface in magnetoelectric sensor chip (3).
2. A magnetoelectric angular displacement sensor according to claim 1, wherein: power conversion module (2) includes LDO voltage regulator (5), LDO voltage regulator (5) VIN end is connecting resistance (6) one end and electric capacity B (2a) one end respectively, electric capacity B (2a) one end is connected to LDO voltage regulator (5) EN end, and the SS end passes through electric capacity C (3a) ground connection, indirect electric capacity A (1a) of the other end of resistance (6) other end and electric capacity B (2a) other end, LDO voltage regulator (5) ADJ end, OUT termination VCC end, GND end and EPAD end all ground connection, still connect electric capacity D (4a) between LDO voltage regulator (5) ADJ end and the earthing terminal.
3. A magnetoelectric angular displacement sensor according to claim 1, wherein: the magnetoelectric sensor chip (3) is connected with the controller (7) through the SPI.
4. A magnetoelectric angular displacement sensor according to claim 1, wherein: the magnetic encoder (4) adopts an EN-C3A4 magnetoelectric incremental encoder.
5. A magnetoelectric angular displacement sensor according to claim 3, wherein: and the controller (7) meets the level requirement of an RS-422 interface supplied with power by +5V according to the data output DA level standard of the CLK clock given by the DSP.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110394400.5A CN113155018A (en) | 2021-04-13 | 2021-04-13 | Magnetoelectric angular displacement sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110394400.5A CN113155018A (en) | 2021-04-13 | 2021-04-13 | Magnetoelectric angular displacement sensor |
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| CN113155018A true CN113155018A (en) | 2021-07-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118865606A (en) * | 2024-06-13 | 2024-10-29 | 无锡市第二人民医院 | A multi-level early warning system and method for indoor environment monitoring in intensive care units |
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| CN101487691A (en) * | 2008-01-15 | 2009-07-22 | Asm自动传感器测量技术有限公司 | Angle sensor circuit |
| US20090315544A1 (en) * | 2007-02-23 | 2009-12-24 | Ntn Corporation | Rotation detection device and rotation detector equipped bearing assembly |
| CN106443509A (en) * | 2015-08-07 | 2017-02-22 | 德昌电机(深圳)有限公司 | Magnetic sensor integrated circuit, motor assembly, and application equipment |
| CN106533307A (en) * | 2016-12-28 | 2017-03-22 | 南京理工大学 | Permanent magnet synchronous motor vector decoupling controller for electromobile based on DSP (Digital Signal Processor) |
| CN207113898U (en) * | 2017-03-02 | 2018-03-16 | 扬州恒春电子有限公司 | A kind of Hall magnetic rotary displacement transducer control circuit |
| JP2020064018A (en) * | 2018-10-19 | 2020-04-23 | パナソニックＩｐマネジメント株式会社 | Encoder and brushless motor comprising the same |
| CN210802495U (en) * | 2019-11-19 | 2020-06-19 | 深圳跬步动力科技有限公司 | Magnetic encoder |
| CN212274951U (en) * | 2020-06-04 | 2021-01-01 | 珠海市太乙人工智能有限公司 | Integrated magnetic encoder based on POE power supply and communication |
-
2021
- 2021-04-13 CN CN202110394400.5A patent/CN113155018A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100478978B1 (en) * | 2004-12-28 | 2005-03-28 | (주)다림시스템 | Apparatus for resolution of angular position using hall-ic and method thereof |
| US20090315544A1 (en) * | 2007-02-23 | 2009-12-24 | Ntn Corporation | Rotation detection device and rotation detector equipped bearing assembly |
| CN101487691A (en) * | 2008-01-15 | 2009-07-22 | Asm自动传感器测量技术有限公司 | Angle sensor circuit |
| US20090188120A1 (en) * | 2008-01-15 | 2009-07-30 | Asm Automation Sensorik Messtechnik Gmbh | Angle sensor circuit |
| CN106443509A (en) * | 2015-08-07 | 2017-02-22 | 德昌电机(深圳)有限公司 | Magnetic sensor integrated circuit, motor assembly, and application equipment |
| CN106533307A (en) * | 2016-12-28 | 2017-03-22 | 南京理工大学 | Permanent magnet synchronous motor vector decoupling controller for electromobile based on DSP (Digital Signal Processor) |
| CN207113898U (en) * | 2017-03-02 | 2018-03-16 | 扬州恒春电子有限公司 | A kind of Hall magnetic rotary displacement transducer control circuit |
| JP2020064018A (en) * | 2018-10-19 | 2020-04-23 | パナソニックＩｐマネジメント株式会社 | Encoder and brushless motor comprising the same |
| CN210802495U (en) * | 2019-11-19 | 2020-06-19 | 深圳跬步动力科技有限公司 | Magnetic encoder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118865606A (en) * | 2024-06-13 | 2024-10-29 | 无锡市第二人民医院 | A multi-level early warning system and method for indoor environment monitoring in intensive care units |
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Application publication date: 20210723 |