CN108413918A - A kind of low speed measures the method and combined measurement method of orbit geometry parameter - Google Patents

A kind of low speed measures the method and combined measurement method of orbit geometry parameter Download PDF

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Publication number
CN108413918A
CN108413918A CN201810115146.9A CN201810115146A CN108413918A CN 108413918 A CN108413918 A CN 108413918A CN 201810115146 A CN201810115146 A CN 201810115146A CN 108413918 A CN108413918 A CN 108413918A
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China
Prior art keywords
track
profile instrument
real
processing unit
central processing
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CN201810115146.9A
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Chinese (zh)
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CN108413918B (en
Inventor
张发成
白洪林
常亮
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Beijing Li Tie Transit Equipment Co Ltd
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Beijing Li Tie Transit Equipment Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups
    • G01B21/30Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups for measuring roughness or irregularity of surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61KAUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
    • B61K9/00Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
    • B61K9/08Measuring installations for surveying permanent way
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups
    • G01B21/20Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups for measuring contours or curvatures, e.g. determining profile
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C1/00Measuring angles

Abstract

The invention discloses methods and combined measurement method that a kind of low speed measures orbit geometry parameter, its key points of the technical solution are that the distance between the preceding profile instrument and rear profile instrument above same root track are C;Odometer records the mileage of train process in real time, obtains track at low speeds with respect to geometric parameter xi;Three-dimensional gyroscope measures the angle change α in horizontal plane in real time;The preceding real-time measurement distance raceway surface x of profile instrumenti‑1The offset h at placei‑1;The real-time measurement distance raceway surface x of profile instrument afterwardsiThe offset h at placei;The preceding real-time measurement distance raceway surface x of profile instrumentiThe offset h at placei’;Pass through formulaObtain y of the errant with respect to geometric parameteri, finally obtain the arbitrary point (x of measurementi, yi), ride comfort parameter is obtained, train speed obtains (x in 15Km/h or more by inertial reference methodi, yi), reaching detection more accurate of the low-speed or high-speed to track irregularity.

Description

A kind of low speed measures the method and combined measurement method of orbit geometry parameter
Technical field
The present invention relates to the field of orbit measurement, more particularly to a kind of low speed measures the method for orbit geometry parameter and answers Close measurement method.
Background technology
Early stage track condition uses artificial detection, 19 century 70s track geometry measuring trolley occur.It is small with manual hand Vehicle and motor-driven detection trolley are detected.It cannot reflect that track is several under train wheel load action with these method inspections What state.Over the past decade, since running speed improves, freight volume increases, and the injustice that need to further increase track is pliable, it is desirable that more Track irregularity waveform is accurately measured, thus promotes the development of track detecting new technology.
In the prior art, track irregularity is surveyed using 3 points of inclined string methods or inertial reference method.At high speeds, lead to Inertial reference method is often used to be detected track irregularity, by install odometer ON TRAINS, three-dimensional gyroscope and Track gauge sensor, cross dip sensor and vertical inclination angle sensor obtain track with respect to geometric parameter, i.e. relative measurement data. The measuring principle that three-dimensional gyroscope measures track relevant path is shown in Fig. 1, and by taking the calculating of horizontal plane internal coordinate as an example, relative coordinate is calculated Method formula is:Wherein:α is the water that three-dimensional gyroscope measures in real time Angle change in plane, l are odometer measurement as a result, LiFor starting point to the mileage for calculating point, tiFor in measurement process when Between it is micro.
Inertial reference method integrates the time twice, and speed is lower, and the time is longer, and accumulated error is bigger, therefore inertia Basic taper method is affected by speed, is not suitable for low-speed detection, the more advantage in high speed.And when being monitored, train just opens The speed of train is relatively low when dynamic, and the data precision measured at this time is not high.
Invention content
The object of the present invention is to provide a kind of low speed to measure orbit geometry parameter apparatus and method, its advantage is that low-speed situations Under to detection more accurate of track irregularity.
A kind of low speed measurement orbit geometry parameter method,
Train starts to start in the starting point for measuring section, while odometer, three-dimensional gyroscope, central processing unit, preceding profile Instrument, rear profile instrument and computer are in open state;
The distance between preceding profile instrument and rear profile instrument above same root track are C;
Odometer records the mileage of train process in real time, obtains x of the track with respect to geometric parameter at low speedsi, in Central Processing Unit is input in computer;
Three-dimensional gyroscope measures the angle change α in horizontal plane in real time, is input in computer by central processing unit;
The preceding real-time 1 surface x of measurement distance track of profile instrumenti-1The offset h at placei-1, calculating is input to by central processing unit In machine;
The real-time measurement distance raceway surface x of profile instrument afterwardsiThe offset h at placei, computer is input to by central processing unit In;
The preceding real-time measurement distance raceway surface x of profile instrumentiThe offset h at placei', it is input to computer by central processing unit In;
Pass through the formula in computerObtain y of the errant with respect to geometric parameteri, Finally obtain the arbitrary point (x of measurementi,yi), obtain ride comfort parameter.
By using above-mentioned technical proposal, C is fixed numbers, y0For the measured value of beginning, hi’、hiIt is measured value with α, Later y is obtained by way of cumulativei, rather than by the way of to time integral so that in the case of low speed, accumulation Error is smaller, to detection more accurate of track irregularity under low-speed situations.
A kind of duplex measurement orbit geometry parameter method uses low speed in the case where train speed is not more than 15Km/h The method for measuring track show that inertia monitoring platform is empty in the case where train speed is more than 15Km/h using inertial reference method After half interval contour,
By using above-mentioned technical proposal, when train just starts, train speed is slower, and track is measured using low speed Method is more accurate, and in the case that train speed is more than 15Km/h, it is more accurate to be measured using inertial reference method.
In conclusion the invention has the advantages that:1, detecting more to track irregularity under low-speed situations Accurately;2, the apparatus and method for being measured track under low-speed situations using low speed, are measured using inertial reference method at high speeds, So that whole measure more accurate.
Description of the drawings
Fig. 1 is schematic diagram when low speed measures orbit geometry parameter;
Fig. 2 is structural schematic diagram when mounting bracket is connected with train;
Fig. 3 is the portions the A enlarged drawing in Fig. 2;
Fig. 4 is schematic diagram when profile instrument measures;
Fig. 5 is schematic diagram when profile instrument chooses benchmark;
Fig. 6 is schematic diagram when inertial reference method measures orbit geometry parameter.
In figure, 1, track;2, mounting bracket;3, rear profile instrument;4, preceding profile instrument;41, profile instrument on the inside of front;42, front Outside profile instrument;5, three-dimensional gyroscope;6, mounting assembly;61, connecting rod;62, nut;63, mounting base.
Specific implementation mode
Below in conjunction with attached drawing, invention is further described in detail.The identical reference numeral of wherein identical parts It indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "upper", "lower", " bottom surface " and " top surface " refers to that the direction in attached drawing, word "inner" and "outside" are referred respectively to towards or away from geometric center of specific component Direction.
Embodiment one
A kind of low speed measurement orbit geometry parameter method, the method can be applicable in no more than 15Km/h in train speed, need to use Odometer, three-dimensional gyroscope 5, central processing unit, preceding profile instrument 4, rear profile instrument 3 and computer are acquired and handle number According on the train that the above equipment is respectively mounted, the distance between preceding profile instrument 4 and rear profile instrument 3 of 1 top of same root track are C. In launch train, opens odometer, three-dimensional gyroscope 5, central processing unit, preceding profile instrument 4, rear profile instrument 3 and calculate Machine.
It records the mileage of train process in real time by odometer later, track can be obtained in reflection to the coordinate in horizontal plane 1 opposite geometric parameter xi, it is input in computer by the arrangement of central processing unit.Three-dimensional gyroscope 5 measures horizontal in real time Angle change α in face, is input to by central processing unit in computer.4 real-time 1 surface of measurement distance track of preceding profile instrument xi-1The offset h at placei, it is input in computer by central processing unit.3 real-time 1 surface of measurement distance track of profile instrument afterwards xiThe offset h at placei, it is input in computer by central processing unit.Since track 1 exists centainly in the process of running Irregularity, train has certain fluctuating, at this time before profile instrument 4 detected xi-1X is reached after the numerical value at placeiPlace's detection numerical value When, x can be detected with rear profile instrument 3iWhen detection numerical value hiDifference, 4 real-time 1 surface of measurement distance track of profile instrument before can remembering xiThe offset at place is hi', it is input in computer by central processing unit.
The irregularity of track in space has vertical longitudinal irregularity, also has lateral irregularity, vertical irregularity that can claim For height, height rises and falls in other words, and lateral irregularity is also referred to as track alignment irregularity, in order to measure the vertical irregularity of track With lateral irregularity, wherein offset can be vertical height apart from track upper surface either apart from track inner surface Lateral distance.It in conjunction with Fig. 1, makes and illustrating by taking longitudinal irregularity as an example, curve is 1 actual oscillating curves of track, curve The both ends of top line segment are respectively the height apart from 1 surface of track that preceding profile instrument 4 and rear profile instrument 3 are measured.The length of line segment It is certain, is denoted as C, but since track 1 has certain fluctuating so that train and installation three-dimensional gyroscope 5 ON TRAINS, The posture of preceding profile instrument 4 and rear profile instrument 3 is different, and α is the angle change in the horizontal plane that three-dimensional gyroscope 5 measures in real time, XthiThe angle at place is αi-1, the height apart from 1 surface of track that preceding profile instrument 4 is surveyed is hi-1', rear profile instrument 3 survey away from Leave the right or normal track 1 surface height be hi, therefore can obtain, yi=yi-1+h‘i-1+c*sinαi-1-hi, finally obtainWherein y0It is measured value, h with Ci’、αiAnd hiFor measured value, pass through computer Obtain the parameter (x of each pointi, yi), ultimately form the oscillating curves of track 1.Vertical h is height when measuring vertical irregularity, and When measuring lateral irregularity, lateral h cries offset, preceding profile instrument 4 and rear profile instrument 3 measure apart from the inclined of 1 inner surface of track Shifting.
Embodiment two
In conjunction with Fig. 2 and Fig. 3, a kind of low speed measurement orbit geometry parameter device, including the mileage that train passes through mileage is recorded in real time The laser of meter, the in real time three-dimensional gyroscope 5 of the angle change α in measurement horizontal plane, 1 surface offsets amount of real-time measurement distance track Profile instrument, laser profiles instrument include the preceding profile instrument 4 of 1 surface offsets amount of real-time measurement distance track, real-time measurement distance rail The rear profile instrument 3 of 1 surface offsets amount of road arranges and calculates odometer, three-dimensional gyroscope 5, preceding profile instrument 4 and rear 3 information of profile instrument Computer, odometer, three-dimensional gyroscope 5 and laser profiles instrument with include that the circuit board of central processing unit is connect, in Central Processing Unit can be connected by way of wireless telecommunications with computer, and the information that central processing unit receives acquisition is fed back to Computer.
The top of every track 1 is both provided with preceding profile instrument 4 and rear profile instrument 3, preceding profile instrument 4 and rear profile instrument 3 along The front and back distribution in 1 direction of track.It further includes mounting bracket 2 that low speed, which measures orbit geometry parameter device, and the side of mounting bracket 2 is provided with peace Arrangement 6.In conjunction with Fig. 3, mounting assembly 6 includes connecting rod 61 and the mounting base 63 affixed with 2 side of mounting bracket, connecting rod 61 Upper end can be affixed by bolt and train bottom, the lower end of connecting rod 61 is provided with screw thread, the lower thread of connecting rod 61 There are two nut 62, the lower ends of connecting rod 61 to pass through connecting seat for connection, and seat is clamped and connected so that fixed pacify by two nuts 62 Fill seat 63.
Mounting bracket 2 is rectangle frame-shaped, and laser profiles instrument is mounted on the four corners of mounting bracket 2, and three-dimensional gyroscope 5 is located at peace It shelves 2 insides and is located at medium position, three-dimensional gyroscope 5 and the inner wall of mounting bracket 2 are affixed.
Preceding profile instrument 4 includes before measuring the front inside profile instrument 41 of profile on the inside of rail and measuring rail lateral profile Side outside profile instrument 42 measures the section of track 1 by profile instrument 42 on the outside of profile instrument 41 on the inside of front and front, can also survey Span leaves the right or normal track the offset on 1 surface, rear profile instrument 3 include measure on the inside of rail profile instrument on the inside of the rear of profile can measure away from Leave the right or normal track the offset on 1 surface.In conjunction with Fig. 4, profile instrument 42 is located at track 1 on the outside of front inside profile instrument 41 and front Above side, profile instrument 42 can be symmetrical about track 1 on the outside of front inside profile instrument 41 and front, and profile instrument is located on the inside of rear Above the side of track 1, the profile on the inside of track can be measured by each profile instrument in this way, you can judge vertically to deviate together and Lateral shift.
Selected reference is needed when judging to deviate by profile instrument in conjunction with Fig. 5, the work edge profile of track 1 can be selected The point of contact of common tangent, common tangent and track 1 is exactly the datum mark vertically deviated, and tangent line moves down certain distance, Ke Yishi 14mm, 16mm or 18mm, the intersection point with medial surface are exactly the datum mark of lateral shift, and vertical offset is for calculating height, laterally Offset for calculate rail to.
Embodiment three
In the case where train speed is not more than 15Km/h, measured using the method for embodiment one, and train speed is more than It in the case of 15Km/h, is measured using inertial reference method, in conjunction with Fig. 6, inertial reference method experiment curv rises in actual track 1 The top of curve is lied prostrate, thus
Example IV
Further include that installation connect to react train speed ON TRAINS with central processing unit on the basis of embodiment two Velocity measuring module, α are the angle change in the horizontal plane that three-dimensional gyroscope 5 measures in real time, l be it is that odometer measures as a result, LiIt is mileage of the starting point to calculating, it is, of course, also possible to the synchronised clock synchronous with odometer is set, tiFor in measurement process Time is micro, is just surveyed using inertial reference method in the case where velocity measuring module detects that train speed is more than 15Km/h Amount.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art Member can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at this It is all protected by Patent Law in the right of invention.

Claims (2)

1. a kind of low speed measures orbit geometry parameter method, it is characterised in that:
Train starts to start in the starting point for measuring section, while odometer, three-dimensional gyroscope (5), central processing unit, preceding exterior feature Shape instrument (4), rear profile instrument (3) and computer are in open state;
The distance between preceding profile instrument (4) and rear profile instrument (3) above same root track (1) are C;
Odometer records the mileage of train process in real time, obtains x of the track (1) with respect to geometric parameter at low speedsi, pass through Central processing unit is input in computer;
Three-dimensional gyroscope (5) measures the angle change α in horizontal plane in real time, is input in computer by central processing unit;
The real-time 1 surface x of measurement distance track of preceding profile instrument (4)i-1The offset h at placei-1, meter is input to by central processing unit In calculation machine;
Real-time measurement distance track (1) surface x of profile instrument (3) afterwardsiThe offset h at placei, meter is input to by central processing unit In calculation machine;
Real-time measurement distance track (1) the surface x of preceding profile instrument (4)iThe offset h at placei', it is input to meter by central processing unit In calculation machine;
Pass through the formula in computerErrant (1) is obtained with respect to geometric parameter yi, finally obtain the arbitrary point (x of measurementi,yi), obtain ride comfort parameter.
2. a kind of duplex measurement orbit geometry parameter method, it is characterised in that:In the case where train speed is not more than 15Km/h, The method for measuring track (1) using the low speed described in claim 1 is used in the case where train speed is more than 15Km/h After inertial reference method obtains inertia monitoring platform space curve,
CN201810115146.9A 2018-02-05 2018-02-05 Method for measuring geometrical parameters of track at low speed and composite measuring method Active CN108413918B (en)

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CN109910948A (en) * 2019-03-22 2019-06-21 北京锦鸿希电信息技术股份有限公司 The detection method and device of rail height
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