CN105043239A - Magnetic angle sensor based on MLX 90316 - Google Patents
Magnetic angle sensor based on MLX 90316 Download PDFInfo
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- CN105043239A CN105043239A CN201510483359.3A CN201510483359A CN105043239A CN 105043239 A CN105043239 A CN 105043239A CN 201510483359 A CN201510483359 A CN 201510483359A CN 105043239 A CN105043239 A CN 105043239A
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Abstract
The invention discloses a magnetic angle sensor based on MLX 90316, comprising a magnetic induction signal detection circuit, a microcontroller module, a signal output module, an analog to digital conversion circuit, an amplification circuit and a power supply module; the magnetic induction signal detection circuit is connected to a microcontroller module through the analog-to-digital conversion circuit and the amplification circuit which are connected in series; the output terminal of the microcontroller module is connected to the signal output module; and the power supply module is used for supplying electric energy to the magnetic induction signal detection circuit, the microcontroller module and the signal output module.
Description
Technical field
The present invention relates to a kind of magnetic angular sensor, particularly relate to a kind of magnetic angular sensor based on MLX90316, belong to sensor control field.
Background technology
Magnetic field sensor the amount of various magnetic field and change thereof to be transformed into the device that electric signal exports.Magnetic field or the information relevant to magnetic field is all there is in nature with many places of human society life.The magnetic field utilizing the artificial permanent magnet arranged to produce, can be used as the carrier of much information perhaps.Therefore, detect, gather, store, change, reappear and monitor in various magnetic field and magnetic field the task of the various information carried, naturally just drop on it magnetic field sensor.In current information society, magnetic field sensor has become indispensable base components in infotech and information industry.At present, people have developed the Magnetic Sensor utilizing various physics, chemistry and biological effect, and are used widely in the various aspects of scientific research, production and social life, bear the task of probing into all information.
Previous Magnetic Sensor, is the progress of adjoint magnetic measurement apparatus and progressively develops.In numerous survey magnetism methods, mostly Magnetic Field is become electric signal and measure.In magnetic measurement apparatus, " probe " or " sampler " is exactly Magnetic Sensor.Along with the develop rapidly of information industry, industrial automation, communications and transportation, Power Electronic Technique, office automation, household electrical appliance, Medical Instruments etc. and the universal of Iron ore concentration, the non-electric parameter measuring and control need need be carried out with a large amount of sensors, convert to can with the signal of computing machine compatibility, as their input signal, this provides chance with regard to giving the fast development of Magnetic Sensor, defines appreciable Magnetic Sensor industry
Angular transducer is widely used in the fields such as automobile, machinery, Aeronautics and Astronautics, navigation, industrial automation.It is mainly divided into contact and contactless two kinds, because the angular transducer of contact is along with the growth of service time, mechanical wear can be there is, precision reduces, often keep in repair and even change the shortcomings such as new equipment, which not only improves production cost also easily makes the quality of equipment under test not ensure, non-contact angle sensor then overcomes these shortcomings.Conventional non-contact angle sensor has photo-electric and magneto-electric.Although the height of the ratio of precision magneto-electric of photo-electric, harsh to environmental requirement, shock resistance is also poor, is not therefore also just suitable for the more complicated industrial site of environment.Just based on these problems, design a kind of angular transducer based on magneto-electric, it has with low cost, and anti-interference is high, the resolving power advantage such as within 0.5 °.
Summary of the invention
Technical matters to be solved by this invention provides a kind of contact, low cost, high resolving power for the deficiency of background technology, the high jamproof magnetic angular sensor based on MLX90316.
The present invention is for solving the problems of the technologies described above by the following technical solutions
A kind of magnetic angular sensor based on MLX90316, comprise magnetic induction signal deteching circuit, micro controller module, signal output module, analog to digital conversion circuit, amplifying circuit and power module, analog to digital conversion circuit, the amplifying circuit connection micro controller module of described magnetic induction signal deteching circuit by connecting successively, the output terminal connection signal output module of described micro controller module, described power module is used for providing electric energy needed for magnetic induction signal deteching circuit, micro controller module, signal output module;
Described amplifying circuit comprises amplifier chip, the first resistance, the second resistance, the 3rd resistance, the output terminal of analog to digital conversion circuit connects one end of the first resistance and the second resistance respectively, the other end of the second resistance connects the positive pole of amplifier chip, with the other end ground connection of the first resistance after the negative pole of amplifier chip and the 3rd resistant series, the voltage output end of amplifier chip connects the input end of micro controller module.
As the further preferred version of a kind of magnetic angular sensor based on MLX90316 of the present invention, described micro controller module adopts the MC9S08DZ60 microprocessor of Freescale company.
As the further preferred version of a kind of magnetic angular sensor based on MLX90316 of the present invention, the chip model of described magnetic induction signal deteching circuit is MLX90316.
As the further preferred version of a kind of magnetic angular sensor based on MLX90316 of the present invention, the chip model of analog-digital conversion circuit as described is TMS320LF240.
As the further preferred version of a kind of magnetic angular sensor based on MLX90316 of the present invention, described power module adopts rechargeable battery.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
1, the present invention is with low cost, and anti-interference is high, and resolving power is within 0.5 °;
2, the present invention is on the basis of the measurement for realizing rugged surroundings inferior horn angle value, employs a kind of contactless, low cost, high resolving power based on MLX90316, high jamproof magnetic angular sensor.By the analysis to physical construction and hardware circuit, error identifying is originated, and realize the measurement of angle value, precision can reach 0.5 °, meets required technical indicator, can be widely used in the industrial circle such as automobile, motor.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention;
Fig. 2 is amplifying circuit circuit diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
As shown in Figure 1, a kind of magnetic angular sensor based on MLX90316, comprise magnetic induction signal deteching circuit, micro controller module, signal output module, analog to digital conversion circuit, amplifying circuit and power module, analog to digital conversion circuit, the amplifying circuit connection micro controller module of described magnetic induction signal deteching circuit by connecting successively, the output terminal connection signal output module of described micro controller module, described power module is used for providing electric energy needed for magnetic induction signal deteching circuit, micro controller module, signal output module;
As shown in Figure 2, described amplifying circuit comprises amplifier chip, the first resistance, the second resistance, the 3rd resistance, the output terminal of analog to digital conversion circuit connects one end of the first resistance and the second resistance respectively, the other end of the second resistance connects the positive pole of amplifier chip, with the other end ground connection of the first resistance after the negative pole of amplifier chip and the 3rd resistant series, the voltage output end of amplifier chip connects the input end of micro controller module.
Wherein, described micro controller module adopts the MC9S08DZ60 microprocessor of Freescale company, the chip model of described magnetic induction signal deteching circuit is MLX90316, and the chip model of analog-digital conversion circuit as described is TMS320LF240, and described power module adopts rechargeable battery.
Magnetic induction signal deteching circuit is mainly through being integrated with the change of the integrated chip perception angle of twin shaft Hall element, and output in microprocessor with simulating signal or digital signaling, through certain Code And Decode, industrial voltage or current signal is exported by microprocessor, or with serial communication mode output digit signals.In order to reduce complexity and the source of error of system, signal gathering unit selects the MLX90316 chip of Melexis company.It belongs to CMOS Hall element, can export the angular position information that the magnetic field parallel with chip surface is corresponding, and with the serial communication mode output digit signals of SPI, this reduces the complexity of system greatly.
Micro controller module selects the MC9S08DZ60 of Freescale company, and it is the microprocessor of 16 bit of a small size, low cost, low-power consumption and more external interface; It has the peripheral hardware digital interface such as A/D passage, controller zone network, Serial Peripheral Interface module, serial communication interface, internal integrate circuit bus on 12,24 tunnel, is well suited for carrying out digital signal communication with the external world.
When magnet just rotates on the chip surface, the magnetic sheet that collects in MLX90316 chip can by the magnetic field concentration of parallel action in chip surface, and produce the vertical component being proportional to magnetic field at the edge of IMC structure, then by two, this signal is detected to the conventional planar Hall element be positioned at below IMC.
The present invention is on the basis of the measurement realizing rugged surroundings inferior horn angle value, has invented a kind of contactless, low cost, high resolving power based on MLX90316, the design proposal of high jamproof magnetic angular sensor.Scheme utilizes the magnetic angular sensor designed by Hall element MLX90316 to have the advantages such as contactless, high precision, height are anti-interference.By the analysis to physical construction and hardware circuit, error identifying is originated, and write software algorithm on this basis, realize the measurement of angle value, precision can reach 0.5 °, meets required technical indicator, can be widely used in the industrial circle such as automobile, motor.
In sum, the present invention only protects annexation between hardware and one-piece construction, does not protect the specific algorithm involved by hardware, above display and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (5)
1. the magnetic angular sensor based on MLX90316, it is characterized in that: comprise magnetic induction signal deteching circuit, micro controller module, signal output module, analog to digital conversion circuit, amplifying circuit and power module, analog to digital conversion circuit, the amplifying circuit connection micro controller module of described magnetic induction signal deteching circuit by connecting successively, the output terminal connection signal output module of described micro controller module, described power module is used for providing electric energy needed for magnetic induction signal deteching circuit, micro controller module, signal output module; Described amplifying circuit comprises amplifier chip, the first resistance, the second resistance, the 3rd resistance, the output terminal of analog to digital conversion circuit connects one end of the first resistance and the second resistance respectively, the other end of the second resistance connects the positive pole of amplifier chip, with the other end ground connection of the first resistance after the negative pole of amplifier chip and the 3rd resistant series, the voltage output end of amplifier chip connects the input end of micro controller module.
2. a kind of magnetic angular sensor based on MLX90316 according to claim 1, is characterized in that: described micro controller module adopts the MC9S08DZ60 microprocessor of Freescale company.
3. a kind of magnetic angular sensor based on MLX90316 according to claim 1, is characterized in that: the chip model of described magnetic induction signal deteching circuit is MLX90316.
4. a kind of magnetic angular sensor based on MLX90316 according to claim 1, is characterized in that: the chip model of analog-digital conversion circuit as described is TMS320LF240.
5. a kind of magnetic angular sensor based on MLX90316 according to claim 1, is characterized in that: described power module adopts rechargeable battery.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510483359.3A CN105043239A (en) | 2015-08-08 | 2015-08-08 | Magnetic angle sensor based on MLX 90316 |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510483359.3A CN105043239A (en) | 2015-08-08 | 2015-08-08 | Magnetic angle sensor based on MLX 90316 |
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| CN105043239A true CN105043239A (en) | 2015-11-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036526A (en) * | 2017-04-12 | 2017-08-11 | 杭州智航智能科技有限公司 | A kind of high-accuracy angular transducer on intelligent barrier gate |
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| US6703827B1 (en) * | 2000-06-22 | 2004-03-09 | American Electronics Components, Inc. | Electronic circuit for automatic DC offset compensation for a linear displacement sensor |
| CN101975549A (en) * | 2010-10-15 | 2011-02-16 | 昌辉汽车电气系统（安徽）有限公司 | Oversized range absolute position angular transducer and angular detection method of absolute position |
| CN102135410A (en) * | 2011-02-16 | 2011-07-27 | 吴志海 | Non-contact displacement measuring device as well as sensor and magnetic induction measuring circuit thereof |
| CN203396355U (en) * | 2013-08-30 | 2014-01-15 | 中国航天科技集团公司第九研究院第七七一研究所 | Non-contact type absolute angle sensor |
| CN104359394A (en) * | 2014-04-16 | 2015-02-18 | 国家电网公司 | High-precision digital angle measurer |
| CN205102775U (en) * | 2015-08-08 | 2016-03-23 | 南京博纳威电子科技有限公司 | Magnetism angle sensor based on MLX90316 |
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2015
- 2015-08-08 CN CN201510483359.3A patent/CN105043239A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6703827B1 (en) * | 2000-06-22 | 2004-03-09 | American Electronics Components, Inc. | Electronic circuit for automatic DC offset compensation for a linear displacement sensor |
| CN101975549A (en) * | 2010-10-15 | 2011-02-16 | 昌辉汽车电气系统（安徽）有限公司 | Oversized range absolute position angular transducer and angular detection method of absolute position |
| CN102135410A (en) * | 2011-02-16 | 2011-07-27 | 吴志海 | Non-contact displacement measuring device as well as sensor and magnetic induction measuring circuit thereof |
| CN203396355U (en) * | 2013-08-30 | 2014-01-15 | 中国航天科技集团公司第九研究院第七七一研究所 | Non-contact type absolute angle sensor |
| CN104359394A (en) * | 2014-04-16 | 2015-02-18 | 国家电网公司 | High-precision digital angle measurer |
| CN205102775U (en) * | 2015-08-08 | 2016-03-23 | 南京博纳威电子科技有限公司 | Magnetism angle sensor based on MLX90316 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036526A (en) * | 2017-04-12 | 2017-08-11 | 杭州智航智能科技有限公司 | A kind of high-accuracy angular transducer on intelligent barrier gate |
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Application publication date: 20151111 |