CN1603189A - Magnetic suspension rail state automatic detection apparatus and method - Google Patents
Magnetic suspension rail state automatic detection apparatus and method Download PDFInfo
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- CN1603189A CN1603189A CN 200410068035 CN200410068035A CN1603189A CN 1603189 A CN1603189 A CN 1603189A CN 200410068035 CN200410068035 CN 200410068035 CN 200410068035 A CN200410068035 A CN 200410068035A CN 1603189 A CN1603189 A CN 1603189A
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- displacement pickup
- crack
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- displacement
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Abstract
The invention relates to a magnetic suspension railway state automatic detection device and its method, and is used in magnetic suspension railway state detection technique field. In the device of the invention, both the displacement transducer and triggering transducer are installed at the measurement bay, and connected to the high speed data acquisition card. The measurement bay is fixed on the car frame by front-back fixed bolt. The output end of the high speed data acquisition card is connected to the input end of wide frequent digital filtering processor. And its output end is connected to the input end of the moving displacement error calculus processor. And its output end is connected to the high speed memory. In the method, the wide frequent digital filtering processor is adopted the difference digital filtering algorithm to eliminate the vibration of the system own, find the measured value difference of the adjacent transducer, use the moving displacement error algorithm based on the displacement difference value to gained the exact moving displacement error value, and realize the rapid automatic detection of the car carrying type magnetic suspension railway state. The invention overcomes the influence of the detection precision caused by the vibration, and has rapid automatic detection and high precision.
Description
Technical field
What the present invention relates to is a kind of detecting device and method, and particularly a kind of magnetic suspension rail state automatic detection apparatus and method are used for magnetic-levitation dynamic detection technology field.
Background technology
It is to realize floating guiding of magnetic and power traction by the functor that is fixed on the elevated-beam both sides that the magnetic-levitation train of running at high speed can normally move.Because functor is the segmentation manufacturing, headtotail is installed continuously mutually on track girder, and the geometrical deviation of adjacent functional part surpasses limit value and then will the guidance system of magnetic-levitation train be caused damage, thereby may cause great safety misadventure.Therefore be necessary that regular morpheme error to functor detects.But up to now, the technology and the experience that can be applicable to the magnetic-levitation detection are all less.The magnetic levitation track measurement car running velocity that uses at present has only 1km/h, and speed is slow, and efficient is low, almost can not satisfy long actual needs apart from continuous detecting track girder functor installation error.So the major cause of low speed driving is to measure the shock attenuation unit that does not have setting to be complementary on the car to reach digital filtered signal processing module efficiently.For rail detection system, satisfy at a high speed, high-precision requirement, key is 2 points, the resolution of first sensor, it two is to eliminate the influence of Vehicular vibration to precision.
Find that by prior art documents China Patent No. is: 02113465, name is called " tester of rail state ", has narrated the track irregularity measuring system of a cover employing infrared light sources and line array CCD receiving device.This system is that automatic detection of track condition designed, and is big but the infrared light sources that this patent adopts is subjected to the influence of ambient lighting, directly influences survey precision.And measure the acceleration information of locomotive, and these data must comprise the mode of vibration of locomotive itself, and the speed of a motor vehicle is big more, vibrates by force more, makes result of a measurement can not directly reflect how much irregularities of track like this.Therefore this technology all can not satisfy the measurement requirement of magnetic levitation track on precision and speed.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, provide a kind of magnetic suspension rail state to examine automatically and spatter apparatus and method.At the magnetic-levitation of in-vehicle detect fast and high-precision requirement, the present invention adopts CCD laser displacement sensor design detecting device, use the differential digital filtering method and eliminate Vehicular vibration, overcome the deficiency of existing vehicle-mounted rail detection limit system aspect precision, vibration technology for eliminating.The invention enables the speed of a motor vehicle can be, and guarantee that system accuracy reaches 0.1 millimeter even 0.01 millimeter, reach the requirement of magnetic levitation track fast automatic detecting much larger than 1km/h.
The present invention is achieved by the following technical solutions:
The invention provides a kind of magnetic suspension rail state automatic detection apparatus, comprising: preceding crack far away displacement pickup, preceding nearly crack displacement pickup, nearly crack, back displacement pickup, crack far away, back displacement pickup, triggering sensor, torsional displacement sensor, measurement bay, high-speed data acquisition card, wide band digital filter processor, morpheme error computation processor, high-speed memory, preceding bolt of rear end plate, back bolt of rear end plate.Preceding far crack displacement pickup, preceding nearly crack displacement pickup, nearly crack, back displacement pickup, back far crack displacement pickup, triggering sensor and torsional displacement sensor all are fixedly mounted on the measurement bay, link to each other with high-speed data acquisition card by the sensor output signal line.Measurement bay is fixed on the vehicle frame of vehicle by preceding bolt of rear end plate and back bolt of rear end plate.Trigger sensor and finish the location of measuring synchronous and definite track function part of gathering.The high-speed data acquisition card mouth is received wide band digital filter processor input end, and wide band digital filter processor mouth is received the input end of morpheme error computation processor, and morpheme error computation processor mouth is received high-speed memory.
Along with vehicle ', measurement bay moves along track.When triggering sensor through the slit between the track function part, its mouth jumps to high level by low level.High-speed data acquisition card receives this high level signal, note this constantly, and the operating switch of crack far away displacement pickup, preceding nearly crack displacement pickup, nearly crack, back displacement pickup, crack far away, back displacement pickup, torsional displacement sensor before opening immediately, begin to measure, take off data exports high-speed data acquisition card to.High-speed data acquisition card with data storage in high-speed memory is deposited, and notice wide band digital filter processor, the morpheme Error Calculator receives adjacent displacement difference then, and result calculated is stored in the high-speed memory.The time of measuring system continuous firing is set in advance in the high-speed data acquisition card, and by the control of the timer in the card, the time one arrives, and high-speed data acquisition card is then closed all displacement pickup operating switches.When triggering sensor once more through the slit, high-speed data acquisition card triggers once more, and so forth, realizes the omnidistance measurement of whole rail.
The invention provides the method that a kind of magnetic suspension rail state detects automatically, be specially: in vehicle ', adopt high-res displacement sensor track function part surface (planing surface, spigot surface, the stator face) height change value, the high-frequency data capture card is gathered take off data and is sent the high-frequency digital filter processor to, obtain the side-play amount of track function part again by the morpheme Error Calculator, ratio of slope and torsional capacity, then valid data are stored, the wide band digital filter processor adopts the differential digital filtering algorithm to eliminate the vibration of onboard system itself, ask for the poor of adjacent two measurement value sensors, this difference is not subjected to the influence of Vehicular vibration, the morpheme error processor just can be subjected to the take off data of vibration effect like this, utilization promptly can obtain morpheme error amount accurately based on the morpheme ERROR ALGORITHM of displacement difference, realizes the fast automatic detecting of in-vehicle magnetic levitation track state.
The present invention has substantive distinguishing features and marked improvement, and device of the present invention travels in orbit with vehicle, and moving velocity is much larger than the 1km/h of present use.In order to eliminate the mode of vibration that brings of running at high speed to the influence of survey precision, the wide band digital filter processor adopts the differential filtering method, has eliminated the high order mode of Vehicular vibration, keeps zeroth order mode, for checking system provides the data that need.This filtering algorithm is simple, and effect is remarkable, and resource occupation is few, both can realize in embedded system, also can realize in car-mounted computer.Applications trigger sensor of the present invention comes the collection and the positioning track functor of synchro measure data, avoid collecting a large amount of useless data in unnecessary measurement part, resources such as system CPU, memory device had both effectively been utilized, avoided filter to filter the complex calculation that obtains a small amount of valid data again from mass data, this triggering sensor is equivalent to implement once elementary filtering.Analytic application degree of the present invention is micron-sized high-res displacement pickup, makes system accuracy reach 0.1 millimeter even 0.01 millimeter, is better than other method of measurement greatly.
Description of drawings
Fig. 1 apparatus of the present invention structural representation
The left view of Fig. 2 measurement bay of the present invention
The specific embodiment
As shown in Figure 1, the present invention includes: preceding crack far away displacement pickup 1, preceding nearly crack displacement pickup 2, nearly crack, back displacement pickup 3, crack far away, back displacement pickup 4, triggering sensor 5, torsional displacement sensor 6, measurement bay 7, high-speed data acquisition card 8, wide band digital filter processor 9, morpheme error computation processor 10, high-speed memory 11, preceding bolt of rear end plate 12 and back bolt of rear end plate 13.Far crack displacement pickup 4, triggering sensor 5 and torsional displacement sensor 6 all are fixedly mounted on the measurement bay 7 for preceding far crack displacement pickup 1, preceding nearly crack displacement pickup 2, nearly crack, back displacement pickup 3, back, measurement bay is fixed on the vehicle frame of vehicle by preceding bolt of rear end plate 12 and back bolt of rear end plate 13, and the sensor output signal line links to each other with high-speed data acquisition card 8.High-speed data acquisition card 8 mouths are received wide band digital filter processor 9 input ends, and wide band digital filter processor 9 mouths are received the input end of morpheme error computation processor 10, and morpheme error computation processor 10 mouths are received high-speed memory 11.
Preceding crack far away displacement pickup 1, preceding nearly crack displacement pickup 2, nearly crack, back displacement pickup 3, back far crack displacement pickup 4, torsional displacement sensor 6 are the high-res displacement pickup, and triggering sensor 5 is laser through type sensor.Its location that act as triggering synchronous measurement signal and definite track function part.
Measurement bay 7 is used for installing and fixation of sensor.This measurement bay can be thin plate, slab or the shelf structure that spreads out, and according to the actual measurement requirement, can be single track single face (planing surface, spigot surface or stator face) measurement bay, single track multiaspect or double track multiaspect measurement bay.Can select to install preceding far crack displacement pickup 1, preceding nearly crack displacement pickup 2, nearly crack, back displacement pickup 3, back far crack displacement pickup 4, triggering sensor 5 or torsional displacement sensor 6 on each face.
High-speed data acquisition card 7 can select to provide the synchronous data collection of 6 to 26 input channels according to actual needs.High-speed data acquisition card 7 is embedded IC plates, this plate can integrated wide band digital filter processor 9, morpheme error computation processor 10 and high-speed memory 11 all or part of, not integrated part is finished by computing machine.
Wide band digital filter processor 9 and morpheme error computation processor 10 can be that two independent softwares or hardware system also can synthesize software or hardware system.
The inventive method, in vehicle ', adopt high-res displacement sensor track function part surface (planing surface, spigot surface, the stator face) height change value, high-frequency data capture card 7 is gathered take off data and is sent high-frequency digital filter processor 9 to, obtain the side-play amount of track function part again by morpheme Error Calculator 10, ratio of slope and torsional capacity, then valid data are stored, wide band digital filter processor 9 adopts the differential digital filtering algorithm to eliminate the vibration of onboard system itself, ask for the poor of adjacent two measurement value sensors, utilization promptly obtains morpheme error amount accurately based on the morpheme ERROR ALGORITHM of displacement difference, realizes the fast automatic detecting of in-vehicle magnetic levitation track state.
Below method is done further to limit, comprise following steps:
(1) by the high-res displacement pickup promptly before the original measurement value of crack far away displacement pickup 1, preceding nearly crack displacement pickup 2, nearly crack, back displacement pickup 3, back crack displacement pickup 4 far away and torsional displacement sensor 6 be respectively d
1, d
2, d
3, d
4, d
6, original measurement value arrives high-speed data acquisition card 7 by signal wire transmits;
(2) high-speed data acquisition card 7 is exported to wide band digital filter processor 9 with data, wide band digital filter processor 9 calculated difference Δs
a=d
1-d
2, Δ
b=d
2-d
3, Δ
c=d
3-d
4, Δ
h=d
6-d
3, difference input morpheme error computation processor 10;
(3) morpheme error computation processor 10 calculates track function part side-play amount, ratio of slope, torsional capacity according to difference, and concrete method of calculating is as follows:
Torsional capacity=| Δ
h|
The another kind of expression-form of side-play amount, ratio of slope, torsional capacity is:
Torsional capacity=| (d
6-d
3) |
Morpheme error computation processor 10 carries out morpheme error result calculated and is stored in the high-speed memory 8, realizes the fast automatic detecting of in-vehicle magnetic levitation track state.
Claims (6)
1, a kind of magnetic suspension rail state automatic detection apparatus, comprise: preceding crack far away displacement pickup (1), preceding nearly crack displacement pickup (2), the nearly crack displacement pickup (3) in back, back crack displacement pickup (4) far away, trigger sensor (5), torsional displacement sensor (6), measurement bay (7), high-speed data acquisition card (8), wide band digital filter processor (9), morpheme error computation processor (10), high-speed memory (11), preceding bolt of rear end plate (12) and back bolt of rear end plate (13), it is characterized in that, preceding crack displacement pickup (1) far away, preceding nearly crack displacement pickup (2), the nearly crack displacement pickup (3) in back, back crack displacement pickup (4) far away, triggering sensor (5) and torsional displacement sensor (6) all is fixedly mounted on the measurement bay (7), measurement bay is fixed on the vehicle frame of vehicle by preceding bolt of rear end plate (12) and back bolt of rear end plate (13), the sensor output signal line links to each other with high-speed data acquisition card (8), high-speed data acquisition card (8) mouth is received wide band digital filter processor (9) input end, wide band digital filter processor (9) mouth is received the input end of morpheme error computation processor (10), and morpheme error computation processor (10) mouth is received high-speed memory (11).
2, magnetic suspension rail state automatic detection apparatus according to claim 1, it is characterized in that, before crack displacement pickup (1) far away, preceding nearly crack displacement pickup (2), the nearly crack displacement pickup (3) in back, back crack displacement pickup (4) far away, torsional displacement sensor (6) be high accuracy displacement sensor, it is the laser and CCD displacement pickup, perhaps eddy current sensor, perhaps ultrasonic transduter.
3, magnetic suspension rail state automatic detection apparatus according to claim 1, it is characterized in that, measurement bay (7) is thin plate, slab or the shelf structure that spreads out, be single track single face, single track multiaspect or double track multiaspect measurement bay, select to install preceding far crack displacement pickup (1), preceding nearly crack displacement pickup (2), the nearly crack displacement pickup (3) in back, back far crack displacement pickup (4), triggering sensor (5) or torsional displacement sensor (6) on each face.
4, a kind of magnetic suspension rail state automatic testing method, it is characterized in that, in vehicle ', adopting high-res displacement sensor track function part surface is planing surface, spigot surface, the height change value of stator face, the high-frequency data capture card is gathered take off data and is sent the high-frequency digital filter processor to, obtain the side-play amount of track function part again by the morpheme Error Calculator, ratio of slope and torsional capacity, then valid data are stored, the wide band digital filter processor adopts the differential digital filtering algorithm to eliminate the vibration of onboard system itself, ask for the poor of adjacent two measurement value sensors, this difference has been avoided the influence of Vehicular vibration, the morpheme error processor just can be avoided the take off data of vibration effect like this, utilization promptly obtains morpheme error amount accurately based on the morpheme ERROR ALGORITHM of displacement difference, realizes the fast automatic detecting of in-vehicle magnetic levitation track state.
5, magnetic suspension rail state automatic testing method according to claim 4 is characterized in that, below by step it is done further to limit:
(1) by the high-res displacement pickup promptly before the original measurement value of crack far away displacement pickup, preceding nearly crack displacement pickup, nearly crack, back displacement pickup, back crack displacement pickup far away and torsional displacement sensor be respectively d
1, d
2, d
3, d
4, d
6, described original measurement value arrives high-speed data acquisition card by signal wire transmits;
(2) high-speed data acquisition card is exported to the wide band digital filter processor with data, wide band digital filter processor calculated difference Δ
a=d
1-d
2, Δ
b=d
2-d
3, Δ
c=d
3-d
4, Δ
h=d
6-d
3, described difference input morpheme error computation processor;
(3) morpheme error computation processor calculates track function part side-play amount, ratio of slope, torsional capacity according to difference, and concrete method of calculating is as follows:
Torsional capacity=| Δ
h|
Morpheme error computation processor carries out morpheme error result calculated and is stored in the high-speed memory, realizes the fast automatic detecting of in-vehicle magnetic levitation track state.
6, magnetic suspension rail state automatic testing method according to claim 5 is characterized in that, the another kind of expression-form of side-play amount, ratio of slope, torsional capacity is:
Torsional capacity=| (d
6-d
3) |.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410068035 CN1603189A (en) | 2004-11-11 | 2004-11-11 | Magnetic suspension rail state automatic detection apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410068035 CN1603189A (en) | 2004-11-11 | 2004-11-11 | Magnetic suspension rail state automatic detection apparatus and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1603189A true CN1603189A (en) | 2005-04-06 |
Family
ID=34666759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410068035 Withdrawn CN1603189A (en) | 2004-11-11 | 2004-11-11 | Magnetic suspension rail state automatic detection apparatus and method |
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| Country | Link |
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| CN (1) | CN1603189A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1858858B (en) * | 2006-03-14 | 2010-05-12 | 南京航空航天大学 | Analogue on-site regulating system for magnetic suspension bearing |
| CN102620771A (en) * | 2012-03-20 | 2012-08-01 | 北京控股磁悬浮技术发展有限公司 | Equipment for monitoring state of current collector of medium and low-speed magnetic suspension train |
| CN106740981A (en) * | 2016-12-01 | 2017-05-31 | 中车株洲电力机车有限公司 | A kind of medium-and low-speed maglev line is by stream conductor rail device for dynamically detecting and method |
| CN108645451A (en) * | 2018-07-12 | 2018-10-12 | 中铁磁浮科技（成都）有限公司 | Middle speed magnetic suspension train on-line condition monitoring system |
| CN110230985A (en) * | 2019-07-22 | 2019-09-13 | 株洲时代电子技术有限公司 | A kind of sleeper bolt detection device |
| CN111288938A (en) * | 2020-03-13 | 2020-06-16 | 中铁电气化局集团有限公司 | Error detection method and error detection vehicle for contact network |
| CN112109765A (en) * | 2019-06-21 | 2020-12-22 | 江西理工大学 | Suspension type magnetic suspension track space structural member data acquisition system and judgment method |
| CN112172535A (en) * | 2020-10-16 | 2021-01-05 | 中国人民解放军国防科技大学 | Method for positioning, measuring speed and measuring height of magnetic-levitation train |
| CN114264908A (en) * | 2021-12-23 | 2022-04-01 | 同济大学 | Automatic-triggering magnetic suspension track online monitoring system and method |
-
2004
- 2004-11-11 CN CN 200410068035 patent/CN1603189A/en not_active Withdrawn
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1858858B (en) * | 2006-03-14 | 2010-05-12 | 南京航空航天大学 | Analogue on-site regulating system for magnetic suspension bearing |
| CN102620771A (en) * | 2012-03-20 | 2012-08-01 | 北京控股磁悬浮技术发展有限公司 | Equipment for monitoring state of current collector of medium and low-speed magnetic suspension train |
| CN102620771B (en) * | 2012-03-20 | 2015-02-25 | 北京控股磁悬浮技术发展有限公司 | Equipment for monitoring state of current collector of medium and low-speed magnetic suspension train |
| CN106740981A (en) * | 2016-12-01 | 2017-05-31 | 中车株洲电力机车有限公司 | A kind of medium-and low-speed maglev line is by stream conductor rail device for dynamically detecting and method |
| CN108645451A (en) * | 2018-07-12 | 2018-10-12 | 中铁磁浮科技（成都）有限公司 | Middle speed magnetic suspension train on-line condition monitoring system |
| CN112109765A (en) * | 2019-06-21 | 2020-12-22 | 江西理工大学 | Suspension type magnetic suspension track space structural member data acquisition system and judgment method |
| CN112109765B (en) * | 2019-06-21 | 2021-11-30 | 江西理工大学 | Suspension type magnetic suspension track space structure data acquisition system |
| CN110230985B (en) * | 2019-07-22 | 2021-03-02 | 株洲时代电子技术有限公司 | Sleeper bolt detection device |
| CN110230985A (en) * | 2019-07-22 | 2019-09-13 | 株洲时代电子技术有限公司 | A kind of sleeper bolt detection device |
| CN111288938A (en) * | 2020-03-13 | 2020-06-16 | 中铁电气化局集团有限公司 | Error detection method and error detection vehicle for contact network |
| CN111288938B (en) * | 2020-03-13 | 2021-07-09 | 中铁电气化局集团有限公司 | Error detection method and error detection vehicle for contact network |
| CN112172535A (en) * | 2020-10-16 | 2021-01-05 | 中国人民解放军国防科技大学 | Method for positioning, measuring speed and measuring height of magnetic-levitation train |
| CN114264908A (en) * | 2021-12-23 | 2022-04-01 | 同济大学 | Automatic-triggering magnetic suspension track online monitoring system and method |
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