CN105083300A - Speed detection device and installation method thereof - Google Patents
Speed detection device and installation method thereof Download PDFInfo
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- CN105083300A CN105083300A CN201510481629.7A CN201510481629A CN105083300A CN 105083300 A CN105083300 A CN 105083300A CN 201510481629 A CN201510481629 A CN 201510481629A CN 105083300 A CN105083300 A CN 105083300A
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- 238000009434 installation Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000001514 detection method Methods 0.000 title abstract 5
- 230000006698 induction Effects 0.000 claims abstract description 79
- 230000001939 inductive effect Effects 0.000 claims abstract description 39
- 239000000523 sample Substances 0.000 claims abstract description 33
- 230000000737 periodic effect Effects 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000003137 locomotive effect Effects 0.000 description 13
- 210000004907 gland Anatomy 0.000 description 8
- 238000012360 testing method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
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- 238000001125 extrusion Methods 0.000 description 1
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Abstract
The invention discloses a speed detection device which comprises a disk and a sensor matched with the disc. The disc comprises a disc body and multiple magnetic parts arranged in the disc body, the disc body is internally provided with a magnetic induction passage, and the sensor comprises an inductive probe; the multiple magnetic parts are sequentially arranged on the disc body and form a magnetic field which changes periodically in the magnetic induction passage, and the inductive probe extends into the magnetic induction passage to cut magnetic induction lines of the magnetic field and outputs a periodical pulse signal. According to the speed detection device, the range of an inductive gap of the sensor is large, the eccentric magnitude is allowed to be large during installation, and assembly adaptability is good; rotating parts and driving parts do not exist in the interior of the speed detection device, saved spaces are all assigned to an electrical part to enhance capacity of resisting disturbance, and safety and reliability are achieved. The invention further provides an installation method of the speed detection device.
Description
Technical field
The invention belongs to locomotive field, particularly a kind of speed measuring device and installation method thereof.
Background technology
To be individual pen pulse count the be photoelectric tachometric transducer of 200 mainly adopted in railway locomotive field of testing the speed at present or individual pen pulse count are the contactless Hall revolution speed transducer of 80.
Wherein, photoelectric speed sensor, its inside is all containing drive bearing, and under the compound conditions such as locomotive vibration, impact, high rotating speed and long-time running, the wearing and tearing of drive bearing limit the global reliability level of sensor; On the other hand, sensor realizes transmission by the square tenon of axle head and the square hole cover connection of locomotive shaft-end and tests the speed, the factors such as the fit dimension of both coupling parts, lubricating status and axial relative play determine abrasion between the two, slightly abnormal, abrasion will sharply be risen, and drag down rapidly global reliability level or inefficacy.
Hall revolution speed transducer, at the outer ring output speed signal of radial non-contact inductive speed measuring fluted disc, the mounting means of its axle head is completely different from photoelectric tachometric transducer, the distance of reaction of speed measuring fluted disc tooth top and inductive head end face is 0.5mm-2.0mm, its induction gap of testing the speed is less, and assembling comformability is poor.
Summary of the invention
Based on this, be necessary to provide a kind of induction gap of testing the speed comparatively large and the speed measuring device that assembling comformability is preferably contactless.
There is a need to the installation method that this speed measuring device a kind of is provided.
A kind of speed measuring device, the sensor comprising disk and coordinate with disk, disk comprises disk body and is arranged at the some magnetic parts in disk body, and the inner ring of disk body offers magnetic induction passage, and sensor comprises inductive probe; Some magnetic parts to be set in turn on disk body and to form periodically variable magnetic field in magnetic induction passages, and inductive probe stretches into the magnetic induction line in magnetic induction passage internal cutting magnetic field, and exports periodic electrical signal.
Wherein in a kind of embodiment, some magnetic parts are circumferentially evenly distributed outside magnetic induction passage, and in magnetic induction passage, radially form periodically variable continuous magnetic field.
Wherein in a kind of embodiment, some magnetic part circumferential array are outside magnetic induction passage, and between every two adjacent magnetic parts, both sides close to each other are magnetic pole of the same name.
Wherein in a kind of embodiment, described disk body offers the evenly distributed some fitting recess outside described magnetic induction passage of circumference, and described in every bar, the bearing of trend of fitting recess is parallel with the axis of described magnetic induction passage.
Wherein in a kind of embodiment, described magnetic induction part is insert the magnetic stripe be made up of Nd-Fe-Bo permanent magnet material in corresponding fitting recess, and the direction in the magnetizing direction of magnetic stripe fitting recess corresponding to its embedding described in every root is mutually vertical.
Wherein in a kind of embodiment, the magnetizing direction of described magnetic stripe is that width magnetizes, and described in every root, magnetic stripe embeds in corresponding fitting recess along its length.
Wherein in a kind of embodiment, described sensor is Hall element, and the inductive probe of its front end is three-jaw inductive head.
The present invention also provides a kind of installation method of speed measuring device, and the installation method of described speed measuring device comprises:
Be fixedly installed on wheel shaft by one end of disk, the inner ring of wherein said disk offers magnetic induction passage, is formed with periodically variable magnetic field in described magnetic induction passage;
The magnetic induction line in magnetic field described in described magnetic induction passage internal cutting one end of sensor being stretched into described disk inner ring.
Wherein in a kind of embodiment, described magnetic induction passage is circumferentially evenly distributed outward some magnetic parts, and some described magnetic parts radially form periodically variable connection magnetic field in described magnetic induction passage, and described sensor comprises inductive probe; Wherein, the step that one end of disk is fixedly installed on wheel shaft is comprised:
One end of described disk to be fixedly installed on described wheel shaft and together to rotate with described wheel shaft and produce periodically variable magnetic field;
Described in described magnetic induction passage internal cutting one end of sensor being stretched into described disk inner ring, the step of the magnetic induction line in magnetic field comprises:
Described inductive probe to be stretched in described magnetic induction passage and to be surrounded between some described magnetic parts.
Wherein in a kind of embodiment, described in described magnetic induction passage internal cutting one end of sensor being stretched into described disk inner ring, the step of the magnetic induction line in magnetic field comprises:
Be installed on described wheel shaft by sheathed for wheel bearing;
End cap is arranged on the outer ring of described wheel bearing, and together keeps static with the outer ring of described wheel bearing; Wherein said end cap offers exit orifice;
Described sensor is installed on described end cap, and described inductive probe is stretched in the described magnetic induction passage of described disk inner ring by described exit orifice.
In speed measuring device of the present invention, sensor adopts the mode of inner ring induction and responds to interstice coverage greatly, and during installation, allowable offset amount is large, and assembling comformability is good.And speed measuring device is inner without any turning unit and drive disk assembly, electric part is all distributed in the space saved, for adding strong anti-interference ability, safe and reliable.
Accompanying drawing explanation
Fig. 1 is the part-structure schematic diagram of the locomotive with speed measuring device in present pre-ferred embodiments;
Fig. 2 is the structural representation of the disk of the locomotive of the speed measuring device of band shown in Fig. 1;
Fig. 3 is the cutaway view of disk shown in Fig. 2;
Fig. 4 is middle disk magnetic pole arrangement schematic diagram shown in Fig. 2;
Fig. 5 is the magnetic induction passage internal magnetic field strength distribution curve figure of middle disk shown in Fig. 2.
Detailed description of the invention
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.Preferred embodiment of the present invention is given in accompanying drawing.But the present invention can realize in many different forms, is not limited to embodiment described herein.On the contrary, provide the object of these embodiments be make the understanding of disclosure of the present invention more comprehensively thorough.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe specific embodiment, is not intended to be restriction the present invention.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
Please refer to Fig. 1, the locomotive of an embodiment in the present invention, it comprises car body (not shown), be arranged at wheel on car body to (not shown) and speed measuring device 30.Wherein, gland 15 and the end cap 17 to comprising wheel shaft 11, wheel (not shown), wheel bearing 13 and wheel shaft 11 location fit is taken turns.
Wheel is arranged at wheel shaft 11 opposite end.Wheel bearing 13 is sheathed to be installed on wheel shaft 11 and to be positioned at the outside of respective side wheel.Gland 15 is roughly the opening-like hollow cylindrical in one end, and it is covered at the end of wheel shaft 11 by open end and is fixedly installed on wheel shaft 11 by connecting element 18 (such as, screw).Gland 15 one end in opening presses on the inner ring of wheel bearing 13, and can with the inner ring of wheel bearing 13 and wheel shaft 11 common rotation.The surface that gland 15 is covered in wheel shaft 11 end offers endoporus 150.The outer ring that one end of end cap 17 is connected to wheel bearing 13 together keeps transfixion with the outer ring of wheel bearing 13.End cap 17 and gland 15 jointly define and form receiving space 19.End cap 17 offers exit orifice 170, and the central axis of the central axis of exit orifice 170, endoporus 150 and the central axis of wheel shaft 11 are on same straight line.
The sensor 33 that speed measuring device 30 comprises disk 31 and coordinates with disk 31.Disk 31 is contained in receiving space 19, and its one end is fixedly installed on wheel shaft 11 by endoporus 150.Disk 31 can together rotate with wheel shaft 11 and produce periodically variable magnetic field.Sensor 33 is installed on end cap 17, and one end is stretched in disk 31 by exit orifice 170, exports periodic electrical signal for property induction period magnetic field is also corresponding.Wherein, the inner ring of wheel shaft 11, wheel bearing 13, gland 15 and disk 31 4 are rigidly connected, and together can rotate with wheel shaft 11, are considered as rotor.Sensor 33 to be installed on end cap 17 and together to keep transfixion with the outer ring of wheel bearing 13, and when locomotive axle 11 rotates, is considered as stator.
Please refer to Fig. 2 and Fig. 3, some magnetic parts 316 that disk 31 comprises disk body 310, boss 312, extension edge 314 and is arranged in disk body 310.Disk body 310 is roughly hollow cylindrical, and its inner ring offers magnetic induction passage 3101.Some magnetic parts 316 to be arranged on disk body 310 and to form periodically variable magnetic field in magnetic induction passages 3101.Sensor 33 comprises the inductive probe 330 stretched in magnetic induction passage 3101.Inductive probe 330 stretches into the magnetic induction line in this magnetic field of magnetic induction passage 3101 internal cutting, and exports periodic electrical signal, to carry out rear class process, exports corresponding speed signal.
Particularly, the inner ring of disk body 310 offers the evenly distributed some fitting recess 3103 outside magnetic induction passage 3101 of circumference.Wherein, the bearing of trend of every bar fitting recess 3103 is parallel with the axis of magnetic induction passage 3101.Fitting recess 3103 is separated with the internal face of magnetic induction passage 3101 by disk body 310 in this specific embodiment.Understandably, in some other embodiment, fitting recess 3103 also directly can be arranged on disk body 310 internal face and to be communicated with magnetic induction passage 3101.
Boss 312 is continued to extend to form by the end of disk body 310 vertically, and when mounted with endoporus 150 location fit of gland 15.Wherein, magnetic induction passage 3101 is through disk body 310 and boss 312.Disk 31 is fixed on gland 15 by some connecting elements 18 (such as, screw) by the outside wall surface that extension edge 314 is arranged at boss 312.
Some magnetic parts 316 are corresponding in turn in some fitting recess 3103 of insertion disk body 310, and in magnetic induction passage 3101, radially form periodically variable continuous magnetic field.Particularly, some magnetic parts 316 are that (trade mark is N50SH to the some magnetic stripes be made up of Nd-Fe-Bo permanent magnet material in the corresponding fitting recess 3103 of insertion, high temperature resistantly reach 150 DEG C), and direction in the magnetizing direction fitting recess 3103 corresponding to its embedding of every root magnetic stripe is mutually vertical.
Inductive probe 330 to stretch in magnetic induction passage 3101 and when disk 31 moves in a circle with wheel shaft 11 ceaselessly cutting magnetic induction line, the pulse of the raw correspondence of not stopping pregnancy.Understandably, in some other embodiment, in disk 31 and inductive probe 330, any one is in rotary state, and such as, also can keep static by disk 31, inductive probe 330 circles at the magnetic induction passage 3101 of disk 31.
In this specific embodiment, the magnetizing direction of every root magnetic stripe is that width magnetizes, and every root magnetic stripe embeds in corresponding fitting recess 3103 along its length.Sensor 33 is Hall element, and the inductive probe 330 of its front end is three-jaw inductive head.Disk body 310 offers 100 rectangle fitting recess 3103.100 magnetic stripes embed in corresponding fitting recess 3103 all along its length, and according to ... N-N-S-S-N-N-S-S ... arrangement mode circumferential array outside magnetic induction passage 3101, namely between every two adjacent magnetic stripes, both sides close to each other are magnetic pole of the same name (N pole or S pole).Magnetic field mutual extrusion between the magnetic pole of the same name of every adjacent two adjacent both sides of magnetic stripe, and form the periodically variable continuous magnetic field of N-S one by one at the circumferencial direction of disk body 310 inwall.
Please refer to Fig. 4, for the magnetic pole arrangement schematic diagram of some magnetic parts 316, the regular periodicity pressing N-N-S-S when 100 magnetic stripes inserts after in corresponding fitting recess 3103 when testing, and the periodically variable magnetic-field intensity of 100 magnetic stripe generations changes with the change of the distance between inductive probe 330 and disk body 310 internal face.Inductive probe 330 near disk body 310 internal face time, the peak-to-peak value of periodically variable magnetic-field intensity is maximum; And inductive probe 330 away from disk body 310 internal face time, the peak-to-peak value of periodically variable magnetic-field intensity is progressively decayed.Wherein, at inductive probe 330 separation disc body 310 internal face radial distance t=5mm circumferentially, the periodically variable magnetic-field intensity peak-to-peak value of distribution still can reach 60Gs, so, can realize speed measuring device 30 and still can test the speed under wide arc gap condition.Understandably, in some other embodiment, the direction of the quantity of magnetic stripe, magnetizing direction and embedding fitting recess 3103 all can be determined as required, in this no limit.
Please refer to Fig. 5, be magnetic induction passage 3101 internal magnetic field strength distribution curve figure, wherein, ordinate is magnetic strength, and unit is Gs; Abscissa is the position in some magnetic stripes between each magnetic pole, and unit is °.In this specific embodiment, 100 magnetic stripes are circumferentially evenly distributed on the internal face of disk body 310, and disk 31 individual pen forms 50 magnetic poles altogether, 25 cycles.Wherein, between adjacent pole, position differs 3.6 °, and between adjacent periods, position differs 7.2 °.
In figure, t=0 curve is the magnetic strength curve that inductive probe 330 records on disk body 310 inwall, and it is a sine wave curve; T=5mm be inductive probe 330 apart from disk body 310 inwall 5mm place circumferentially magnetic strength curve, be also a sine wave curve.Article two, the peak-to-peak position consistency of curve, the cycle is consistent.During t=5mm, the peak-to-peak value of magnetic strength can reach 60Gs, coordinates the linear chip of Hall of inductive probe 330 inside, can be exchanged into the sine curve that peak-to-peak value is 300mV, then carry out rear class process, output speed signal.Wherein, motor sport actual speed V can obtain according to following formula (1):
V is locomotive operation actual speed, and unit is m/s;
N is individual pen pulse count, is constant 200 in the present invention;
D is locomotive wheel diameter, and unit is m;
Fh is speed measuring device output frequency, and unit is Hz.
In this specific embodiment, the magnetic stripe specification that fitting recess 3103 is embedded in is that 30mm is long, therefore, magnetic induction passage 3101 axial space is dispersed with the dark periodical magnetic filed of 30mm, inductive probe 330 stretches within the scope of 0-30mm and all can ensure the output of normal speed signal.Meanwhile, in disk body 310, the diameter of magnetic induction passage 3101 is 70mm, and the external diameter of inductive probe 330 is 64mm.Under the condition of installing with one heart, inductive probe 330 is 3mm with the spacing of disk body 310 internal face, during eccentric installation, inductive probe 330 is all can ensure normal speed signal in 0.5mm to 5.0mm interstice coverage to export with the spacing of disk body 310 internal face, therefore when in the present invention, speed measuring device is installed, admissible offset can reach ± 2mm, and assembling comformability is good.
In speed measuring device of the present invention, the induction interstice coverage of sensor 33 is large, and during installation, allowable offset amount is large, and assembling comformability is good.Simultaneously, the mounting interface of sensor 33 is consistent with existing photoelectric tachometric transducer, it can utilize existing photoelectric tachometric transducer to be quick installed on locomotive shaft-end in the installation site of locomotive shaft-end, the magnetic field of induction disk 31 periodically change also exports corresponding speed signal, and without the need to changing existing locomotive shaft-end, there is interchangeability completely.In addition, in the present invention, speed measuring device 33 inside is without any turning unit and drive disk assembly, and electric part is all distributed in the space saved, for adding strong anti-interference ability, safe and reliable.
The present invention also provides a kind of installation method of speed measuring device 30, and it comprises:
One end of disk 31 is fixedly installed on wheel shaft 11; Wherein, the inner ring of disk 31 offers in it magnetic induction passage 3101 being formed with cyclical variation magnetic field.Circumferentially evenly distributed outside magnetic induction passage 3101 have some magnetic parts 316, and some magnetic parts 316 radially form periodically variable connection magnetic field in magnetic induction passage 3101;
One end of sensor 33 is stretched into the magnetic induction line in the magnetic induction passage 3101 internal cutting magnetic field of disk 31 inner ring, wherein, sensor 33 comprises inductive probe 330.
In this specific embodiment, the concrete installation method of speed measuring device 30 comprises:
One end of disk 31 to be fixedly installed on wheel shaft 11 and together to rotate with wheel shaft 11 and produce periodically variable magnetic field;
Be installed on wheel shaft 11 by sheathed for wheel bearing 13;
End cap 17 is arranged on the outer ring of wheel bearing 13, and together keeps static with the outer ring of wheel bearing 13; Wherein end cap 17 offers exit orifice 170;
Sensor 33 is installed on end cap 17, and is surrounded between some magnetic parts 316 in the magnetic induction passage 3101 inductive probe 330 being stretched into disk 31 inner ring by exit orifice 170.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a speed measuring device, it is characterized in that: the sensor comprising disk and coordinate with described disk, described disk comprises disk body and is arranged at the some magnetic parts in described disk body, and the inner ring of described disk body offers magnetic induction passage, and described sensor comprises inductive probe; Some described magnetic parts to be set in turn on described disk body and to form periodically variable magnetic field in described magnetic induction passages, and described inductive probe stretches into the magnetic induction line in magnetic field described in described magnetic induction passage internal cutting, and exports periodic electrical signal.
2. speed measuring device as claimed in claim 1, is characterized in that: some described magnetic parts are circumferentially evenly distributed outside described magnetic induction passage, and radially form periodically variable continuous magnetic field in described magnetic induction passage.
3. speed measuring device as claimed in claim 1, is characterized in that: some described magnetic part circumferential array are outside described magnetic induction passage, and between every two adjacent described magnetic parts, both sides close to each other are magnetic pole of the same name.
4. speed measuring device as claimed in claim 2 or claim 3, is characterized in that: described disk body offers the evenly distributed some fitting recess outside described magnetic induction passage of circumference, and described in every bar, the bearing of trend of fitting recess is parallel with the axis of described magnetic induction passage.
5. speed measuring device as claimed in claim 4, is characterized in that: described magnetic induction part is insert the magnetic stripe be made up of Nd-Fe-Bo permanent magnet material in corresponding fitting recess, and the direction in the magnetizing direction of magnetic stripe fitting recess corresponding to its embedding described in every root is mutually vertical.
6. speed measuring device as claimed in claim 5, is characterized in that: the magnetizing direction of described magnetic stripe is that width magnetizes, and described in every root, magnetic stripe embeds in corresponding fitting recess along its length.
7. speed measuring device as claimed in claim 1, it is characterized in that: described sensor is Hall element, the inductive probe of its front end is three-jaw inductive head.
8. an installation method for speed measuring device, is characterized in that: the installation method of described speed measuring device comprises:
Be fixedly installed on wheel shaft by one end of disk, the inner ring of wherein said disk offers magnetic induction passage, is formed with periodically variable magnetic field in described magnetic induction passage;
The magnetic induction line in magnetic field described in described magnetic induction passage internal cutting one end of sensor being stretched into described disk inner ring.
9. the installation method of speed measuring device as claimed in claim 8, it is characterized in that: described magnetic induction passage is circumferentially evenly distributed outward some magnetic parts, some described magnetic parts radially form periodically variable continuous magnetic field in described magnetic induction passage, and described sensor comprises inductive probe; Wherein, the step that one end of disk is fixedly installed on wheel shaft is comprised:
One end of described disk to be fixedly installed on described wheel shaft and together to rotate with described wheel shaft and produce periodically variable magnetic field;
Described in described magnetic induction passage internal cutting one end of sensor being stretched into described disk inner ring, the step of the magnetic induction line in magnetic field comprises:
Described inductive probe to be stretched in described magnetic induction passage and to be surrounded between some described magnetic parts.
10. the installation method of speed measuring device as claimed in claim 9, is characterized in that: described in described magnetic induction passage internal cutting one end of sensor being stretched into described disk inner ring, the step of the magnetic induction line in magnetic field comprises:
Be installed on described wheel shaft by sheathed for wheel bearing;
End cap is arranged on the outer ring of described wheel bearing, and together keeps static with the outer ring of described wheel bearing; Wherein said end cap offers exit orifice;
Described sensor is installed on described end cap, and described inductive probe is stretched in the described magnetic induction passage of described disk inner ring by described exit orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510481629.7A CN105083300B (en) | 2015-08-07 | 2015-08-07 | Speed measuring device and its installation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510481629.7A CN105083300B (en) | 2015-08-07 | 2015-08-07 | Speed measuring device and its installation method |
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| CN105083300A true CN105083300A (en) | 2015-11-25 |
| CN105083300B CN105083300B (en) | 2018-04-10 |
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| CN201510481629.7A Expired - Fee Related CN105083300B (en) | 2015-08-07 | 2015-08-07 | Speed measuring device and its installation method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106645787A (en) * | 2017-03-08 | 2017-05-10 | 湖南广思科技有限公司 | Method, system and device for measuring speed of locomotive |
| CN108415082A (en) * | 2018-01-23 | 2018-08-17 | 武汉华星光电半导体显示技术有限公司 | Sensor |
| CN109650162A (en) * | 2019-02-27 | 2019-04-19 | 卓郎（江苏）纺织机械有限公司 | The separately positioned take-up roll of the unit that tests the speed and the textile machine for using the take-up roll |
| CN110720043A (en) * | 2017-03-24 | 2020-01-21 | 日进全球株式会社 | Wheel speed detection device |
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| EP0336078B1 (en) * | 1988-02-29 | 1992-10-21 | Siemens Aktiengesellschaft | Apparatus for the measurement of the rotational speed and the position of a rotor of an electric machine |
| JP2003215146A (en) * | 2002-01-25 | 2003-07-30 | Toyota Motor Corp | Rotational speed sensor |
| JP2003336654A (en) * | 2002-05-17 | 2003-11-28 | Ntn Corp | Bearing with rotary sensor |
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| CN203798815U (en) * | 2014-04-04 | 2014-08-27 | 湖南敏锐科技有限公司 | Magnetic coupling driving device for non-contact magnetic transmission type locomotive rotating speed sensor |
| CN204314323U (en) * | 2014-12-26 | 2015-05-06 | 湖南平凡科技有限公司 | Rotor tests the speed recognition device and be provided with this rotor and test the speed the hydro-extractor of recognition device |
| CN204821561U (en) * | 2015-08-07 | 2015-12-02 | 湖南广思科技有限公司 | Speed measuring device |
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2015
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0336078B1 (en) * | 1988-02-29 | 1992-10-21 | Siemens Aktiengesellschaft | Apparatus for the measurement of the rotational speed and the position of a rotor of an electric machine |
| JP2003215146A (en) * | 2002-01-25 | 2003-07-30 | Toyota Motor Corp | Rotational speed sensor |
| JP2003336654A (en) * | 2002-05-17 | 2003-11-28 | Ntn Corp | Bearing with rotary sensor |
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| CN204314323U (en) * | 2014-12-26 | 2015-05-06 | 湖南平凡科技有限公司 | Rotor tests the speed recognition device and be provided with this rotor and test the speed the hydro-extractor of recognition device |
| CN204821561U (en) * | 2015-08-07 | 2015-12-02 | 湖南广思科技有限公司 | Speed measuring device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106645787A (en) * | 2017-03-08 | 2017-05-10 | 湖南广思科技有限公司 | Method, system and device for measuring speed of locomotive |
| CN110720043A (en) * | 2017-03-24 | 2020-01-21 | 日进全球株式会社 | Wheel speed detection device |
| CN108415082A (en) * | 2018-01-23 | 2018-08-17 | 武汉华星光电半导体显示技术有限公司 | Sensor |
| CN108415082B (en) * | 2018-01-23 | 2020-05-05 | 武汉华星光电半导体显示技术有限公司 | Sensor with a sensor element |
| CN109650162A (en) * | 2019-02-27 | 2019-04-19 | 卓郎（江苏）纺织机械有限公司 | The separately positioned take-up roll of the unit that tests the speed and the textile machine for using the take-up roll |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105083300B (en) | 2018-04-10 |
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