CN102401839A - Magnetic suspension train speed detection method - Google Patents
Magnetic suspension train speed detection method Download PDFInfo
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- CN102401839A CN102401839A CN2011102512354A CN201110251235A CN102401839A CN 102401839 A CN102401839 A CN 102401839A CN 2011102512354 A CN2011102512354 A CN 2011102512354A CN 201110251235 A CN201110251235 A CN 201110251235A CN 102401839 A CN102401839 A CN 102401839A
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- train
- photoelectric sensor
- detection method
- magnetic suspension
- speed detection
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- 239000000725 suspension Substances 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 title claims abstract description 14
- 241001669679 Eleotris Species 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000005070 sampling Methods 0.000 abstract 1
- 238000000827 velocimetry Methods 0.000 description 6
- 238000000691 measurement method Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
A method for detecting the speed of magnetically levitated train includes such steps as arranging n photoelectric sensors at the bottom of the suspension frame, setting the distance between adjacent photoelectric sensors to be L, laying a diffuse reflection plate on the sleeper, and installing the photoelectric sensors and the diffuse reflection plate at a certain angle to meet the requirement of the light with specific wavelength emitted by the luminous element of photoelectric sensor1、Δt2、...、Δtn-1The sampling values of the instantaneous speed of the train when the photoelectric sensor passes through the diffuse reflection plate are respectively
The speed detection method has low cost and simple and convenient installation and maintenance. The invention is suitable for magnetic suspension trains with any power form.
Description
Technical field
The present invention relates to a kind of magnetic suspension train speed detection method.
Background technology
More traditional wheel-rail train is employed in and installs speed pickup on the axletree additional, counts calculating road speed through the pulse that axletree is produced in rotary course.For this train that does not rotate axletree of magnetic suspension train, will use some other method to measure the speed of train.
The method of the travelling speed of magnetic suspension train detection at present mainly contains following 3 kinds:
1, cross-inductive loop line velocimetry
Cross-inductive loop line velocimetry is through lay intersecting loop line in orbit, assembles ON TRAINS that vehicle-mounted inductive coil realizes.Vehicle-mounted coil intersects the magnetic field that current signal generated in the loop line through induction and produces induced voltage, and being train through the count pulse number decides train position and speed through intersecting the number of loop line loop.Cross-inductive loop line velocimetry need be laid cable completely, and expense is high, and the installation and maintenance difficulty is big.
2, teeth groove counting velocimetry
For the magnetic suspension train that uses linear synchronous motor as traction power, can use teeth groove counting velocimetry to detect the travelling speed of train.The long stator winding of linear synchronous motor ribbon core is installed on the track circuit.Be designed to the rectangular aperture shape by the groove that sets sub-winding.Because the magnetic circuit of tooth, groove is different, when the magnetic test coil of being drawn by sensor was on tooth or the groove, the relative area of coil and stator face (or groove face) can change, and its inductance value has nothing in common with each other.Utilize high-frequency exiting power resonant circuit region to tell this inductance value difference, convert the variation of inductance value into voltage or change in current is handled, can detect the teeth groove quantity that train passes through thus, and then calculate train running speed.Teeth groove counting velocimetry only is applicable to that linear synchronous generator makees the magnetic suspension train of power, and is not suitable for the magnetic suspension train that line inductance electromotor is done power.
3, radar velocity measurement method
The radar velocity measurement method is the travelling speed that the microwave that utilizes radar to send detects train.Be installed in the other a plurality of radar equipments of circuit and send positioning signal simultaneously; After receiving antenna on the car is received positioning signal, go out train running speed according to angle, time of incidence and the launch time of microwave reflection and incident microwave and radar apart from the distance calculation on ground by truck-mounted computer.Radar velocity measurement method cost is high, the data processing difficulty is big.
Summary of the invention
Technical matters to be solved by this invention is, overcomes the above-mentioned shortcoming of prior art, and a kind of magnetic suspension train speed detection method is provided.
In order to solve above technical matters; Magnetic suspension train speed detection method provided by the invention is characterized in that: n the photoelectric sensor that be provided with of long spacing longitudinally waited in train suspension frame bottom, and wherein n is the natural number greater than 2; The spacing of adjacent photosensors is L; The sleeper upper berth is equipped with diffuse reflector, and the setting angle of said photoelectric sensor and diffuse reflector satisfies the light of the specific wavelength that the photoelectric sensor light-emitting component sent, and after the diffuse reflector reflection, can let the light receiving element of this photoelectric sensor catch; And produce a pulse immediately; Train is when the diffuse reflector, and some photoelectric sensors produce the impulse stroke train of impulses successively, and adjacent pulse is followed successively by Δ t interval time
1, Δ t
2..., Δ t
N-1, the then said photoelectric sensor train instantaneous velocity sampled value during through said diffuse reflector is respectively
Further, said photoelectric sensor is arranged along suspension frame bottom centre line.
Further, said L span is 15-25cm, the n span is 3-6.
The present invention compares the beneficial effect of prior art:
1, simple installation, with low cost
The present invention the hardware that will drop into the few sensor of quantity is installed at the bottom of comprising car, undersized diffusive reflective plate is installed on sleeper gets final product.Speed detection method of the present invention with low cost, installation and maintenance are all very easy.
2, highly versatile
The present invention is applicable to the magnetic suspension train of any power form.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described.
Fig. 1 is a train speed detection method principle of work synoptic diagram of the present invention.
Embodiment
As shown in Figure 1, be train speed detection method principle of work synoptic diagram of the present invention.
Present embodiment invention magnetic suspension train speed detection method; 3 photoelectric sensors that are provided with of long spacing are longitudinally waited in train suspension frame bottom, and said photoelectric sensor is arranged along suspension frame bottom centre line, the spacing L=20cm of adjacent photosensors; The sleeper upper berth is equipped with diffuse reflector; The setting angle of said photoelectric sensor and diffuse reflector satisfies the light of the specific wavelength that the photoelectric sensor light-emitting component sent, and after the diffuse reflector reflection, can let the light receiving element of this photoelectric sensor catch, and produce a pulse immediately; When train passes through diffuse reflector; Some photoelectric sensors produce the impulse stroke train of impulses successively, and adjacent pulse is followed successively by 4ms, 3.999ms interval time, and the train instantaneous velocity sampled value of then said photoelectric sensor during through said diffuse reflector is respectively 50m/s, 50.01/ms.
Except that the foregoing description, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (3)
1. magnetic suspension train speed detection method is characterized in that: n the photoelectric sensor that be provided with of long spacing longitudinally waited in train suspension frame bottom, and wherein n is the natural number greater than 2; The spacing of adjacent photosensors is L; The sleeper upper berth is equipped with diffuse reflector, and the setting angle of said photoelectric sensor and diffuse reflector satisfies the light of the specific wavelength that the photoelectric sensor light-emitting component sent, and after the diffuse reflector reflection, can let the light receiving element of this photoelectric sensor catch; And produce a pulse immediately; Train is when the diffuse reflector, and some photoelectric sensors produce the impulse stroke train of impulses successively, and adjacent pulse is followed successively by Δ t interval time
1, Δ t
2..., Δ t
N-1, the train instantaneous velocity sampled value when then photoelectric sensor is through said diffuse reflector is respectively
2. magnetic suspension train speed detection method according to claim 1 is characterized in that: said photoelectric sensor is arranged along suspension frame bottom centre line.
3. magnetic suspension train speed detection method according to claim 2 is characterized in that: said L span is 15-25cm, and the n span is 3-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102512354A CN102401839A (en) | 2011-08-29 | 2011-08-29 | Magnetic suspension train speed detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102512354A CN102401839A (en) | 2011-08-29 | 2011-08-29 | Magnetic suspension train speed detection method |
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|---|---|
| CN102401839A true CN102401839A (en) | 2012-04-04 |
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| CN2011102512354A Pending CN102401839A (en) | 2011-08-29 | 2011-08-29 | Magnetic suspension train speed detection method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102910085A (en) * | 2012-10-23 | 2013-02-06 | 西南交通大学 | Double-tube independent interleaving control method for electromagnetic attraction suspension system |
| CN103278051A (en) * | 2013-05-30 | 2013-09-04 | 北京航天控制仪器研究所 | Speed measuring method used in rocket sled test |
| CN104049103A (en) * | 2014-07-07 | 2014-09-17 | 南车株洲电力机车有限公司 | Method and device for measuring running speed of magnetic-levitation train |
| CN106353525A (en) * | 2016-08-31 | 2017-01-25 | 白蝉恒 | Speed measuring system and speed measuring method |
| CN111335084A (en) * | 2018-12-19 | 2020-06-26 | 中车唐山机车车辆有限公司 | Track |
| CN111332331A (en) * | 2018-12-19 | 2020-06-26 | 中车唐山机车车辆有限公司 | Magnetic suspension train |
| CN111337704A (en) * | 2018-12-19 | 2020-06-26 | 中车唐山机车车辆有限公司 | Speed measuring system and speed measuring method |
| CN111721960A (en) * | 2019-03-20 | 2020-09-29 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Laser speed measurement positioning device and method for ultrahigh-speed magnetic suspension train |
| CN114518141A (en) * | 2022-01-06 | 2022-05-20 | 北京全路通信信号研究设计院集团有限公司 | High-precision train speed and distance measuring method and vehicle-mounted speed and distance measuring unit |
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| GB2093593A (en) * | 1981-02-20 | 1982-09-02 | Coal Industry Patents Ltd | Method of and equipment for sensing speed of travel |
| JPH0921817A (en) * | 1995-07-04 | 1997-01-21 | Toshiba Corp | Moving body velocity detecting device |
| DE19710728A1 (en) * | 1997-03-14 | 1998-09-17 | Sick Ag | Optoelectronic sensor arrangement for measuring speed of moving objects |
| CN1826531A (en) * | 2003-10-15 | 2006-08-30 | 韩国铁道技术研究院 | Apparatus and method for measuring train speed |
-
2011
- 2011-08-29 CN CN2011102512354A patent/CN102401839A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2093593A (en) * | 1981-02-20 | 1982-09-02 | Coal Industry Patents Ltd | Method of and equipment for sensing speed of travel |
| JPH0921817A (en) * | 1995-07-04 | 1997-01-21 | Toshiba Corp | Moving body velocity detecting device |
| DE19710728A1 (en) * | 1997-03-14 | 1998-09-17 | Sick Ag | Optoelectronic sensor arrangement for measuring speed of moving objects |
| CN1826531A (en) * | 2003-10-15 | 2006-08-30 | 韩国铁道技术研究院 | Apparatus and method for measuring train speed |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102910085A (en) * | 2012-10-23 | 2013-02-06 | 西南交通大学 | Double-tube independent interleaving control method for electromagnetic attraction suspension system |
| CN102910085B (en) * | 2012-10-23 | 2014-08-13 | 西南交通大学 | Double-tube independent interleaving control method for electromagnetic attraction suspension system |
| CN103278051A (en) * | 2013-05-30 | 2013-09-04 | 北京航天控制仪器研究所 | Speed measuring method used in rocket sled test |
| CN103278051B (en) * | 2013-05-30 | 2015-11-25 | 北京航天控制仪器研究所 | A kind of Rocket sled test speed-measuring method |
| CN104049103A (en) * | 2014-07-07 | 2014-09-17 | 南车株洲电力机车有限公司 | Method and device for measuring running speed of magnetic-levitation train |
| CN106353525A (en) * | 2016-08-31 | 2017-01-25 | 白蝉恒 | Speed measuring system and speed measuring method |
| CN111335084A (en) * | 2018-12-19 | 2020-06-26 | 中车唐山机车车辆有限公司 | Track |
| CN111332331A (en) * | 2018-12-19 | 2020-06-26 | 中车唐山机车车辆有限公司 | Magnetic suspension train |
| CN111337704A (en) * | 2018-12-19 | 2020-06-26 | 中车唐山机车车辆有限公司 | Speed measuring system and speed measuring method |
| CN111332331B (en) * | 2018-12-19 | 2021-01-05 | 中车唐山机车车辆有限公司 | Magnetic suspension train |
| CN111335084B (en) * | 2018-12-19 | 2021-11-16 | 中车唐山机车车辆有限公司 | Track |
| CN111721960A (en) * | 2019-03-20 | 2020-09-29 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Laser speed measurement positioning device and method for ultrahigh-speed magnetic suspension train |
| CN114518141A (en) * | 2022-01-06 | 2022-05-20 | 北京全路通信信号研究设计院集团有限公司 | High-precision train speed and distance measuring method and vehicle-mounted speed and distance measuring unit |
| CN114518141B (en) * | 2022-01-06 | 2023-06-30 | 北京全路通信信号研究设计院集团有限公司 | High-precision train speed and distance measuring method and vehicle-mounted speed and distance measuring unit |
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Application publication date: 20120404 |