CN111750829B - Method for judging vertical section in non-contact measurement of railway platform clearance - Google Patents
Method for judging vertical section in non-contact measurement of railway platform clearance Download PDFInfo
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- CN111750829B CN111750829B CN202010626878.1A CN202010626878A CN111750829B CN 111750829 B CN111750829 B CN 111750829B CN 202010626878 A CN202010626878 A CN 202010626878A CN 111750829 B CN111750829 B CN 111750829B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C7/00—Tracing profiles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C1/00—Measuring angles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
Abstract
The invention discloses a method for judging a vertical section in non-contact measurement of a railway platform clearance, which comprises the following steps of measuring a straight line section and measuring a curve section: step S110, determining a measuring point, taking a rail closest to the platform as a reference, and taking any point on the other side of the rail as a measuring point A; s120, selecting comparison points, measuring the distance AE between the measurement point A and any point E on the comparison rail by taking the measurement point A as an original point, and respectively selecting a comparison point B and a comparison point C on the rails on the two sides of the point E; step S130, measuring data; step S140, calculating data; the curve segment measurement comprises the following steps: step S210, determining a measuring point; s220, selecting a comparison point; and step S230, calculating data. Has the advantages that: the non-contact measurement is adopted, the measurement time is not limited, the position of the vertical section can be measured and judged in real time, the channel is not needed, and the safety is good; the measuring points are few, the measuring operation is simple, and the data is reliable.
Description
Technical Field
The invention relates to the technical field of railway platform clearance maintenance, in particular to a method for judging a vertical section in non-contact measurement of a railway platform clearance.
Background
Railway station platform is as the important facility that the train berthhed and the passenger got on and off the bus, and the line can appear subsiding and the displacement of different degrees in long-term operation, leads to the platform to appear the deformation of different degrees to change the relative position of platform and line, the platform limit can influence opening and closing of train door, can take place the automobile body when seriously exceeding the limit and scrape incident such as. Therefore, the railway building department needs to dynamically manage the platform limit in the pipe, periodically measure the platform limit, and grasp the change condition of the platform limit. At present, two means of contact measurement and non-contact measurement are mainly used for platform clearance measurement, wherein the contact measurement mainly adopts a rail clearance measuring ruler for manual measurement, and the non-contact measurement mainly adopts a platform clearance measuring trolley which runs on a rail and a platform clearance measuring instrument which is placed within a platform safety line. The contact type measurement needs manual operation of maintainers, certain human errors exist, and the working efficiency is low; meanwhile, the measurement time of contact measurement and non-contact measurement needs to be limited in a skylight point where the train runs at night, and the time limit is large. Based on the method, the applicant proposes a method for quickly and conveniently determining the position of the vertical section in the railway platform limit without time limitation.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a method for determining a vertical section in a non-contact measurement of a railway platform boundary, wherein a preferred embodiment of the present invention includes: the measurement time is not limited, the measurement operation is simple, the measurement accuracy is high, and the like, which is explained in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a method for judging a vertical section in non-contact measurement of a railway platform clearance, which comprises the following steps of measuring a straight line section and measuring a curve section:
step S110, determining a measuring point, taking a rail closest to the platform as a reference, and taking any point on the other side of the rail as a measuring point A;
s120, selecting comparison points, measuring the distance AE between the measurement point A and any point E on the comparison rail by taking the measurement point A as an original point, and respectively selecting a comparison point B and a comparison point C on the rails on the two sides of the point E;
step S130, data measurement, namely respectively measuring distances AB and AC between a comparison point B and a comparison point C and A, and simultaneously recording a rotation angle alpha 1 when the point B is measured and a rotation angle alpha 2 when the point C is measured;
step S140, calculating data, wherein in a triangle ABC consisting of a point A, a point B and a point C, an angle BAC = alpha 1+ alpha 2, the angles of the angle ABC and the angle ACB can be determined by solving the triangle, after a perpendicular line is led from the point A to the line segment BC, the perpendicular line is sufficient as a point D, AD is a perpendicular line of the BC, the extension line of AD is a vertical section position, angle EAD is alpha, an alpha angle is obtained by solving the triangle, and the measuring equipment rotates alpha angle under an initial position, namely the vertical section position;
the curve segment measurement comprises the following steps:
step S210, determining a measuring point, and selecting a measuring point F on the outer side of the arc top of the rail curve section;
step S220, selecting comparison points, taking the measurement point F as an original point, enabling the measurement equipment to face a curve section of the rail, selecting three comparison points on the curve section of the rail, wherein the three comparison points are respectively a point G, a point H and a point I, measuring distances FG, FH and FI between the three points and the point F respectively, and when the distances between the point G, the point H and the point I are measured, rotating angles of the measurement equipment are respectively alpha 3, alpha 4 and alpha 5;
step S230, data calculation, using a point G, a point H and a point I as three points to make a circle, determining a central point O and a radius r through calculation, connecting the point F and the point O, simultaneously using a connecting line of any comparison point and the central point O as a radius to form a triangle, solving the triangle to obtain an acute angle alpha 6 of the triangle using the point F as a vertex, subtracting the alpha 6 from a corresponding rotation angle when the comparison point is used for measuring distance to obtain a rotation point position adjusting angle alpha 7, rotating the alpha 7 under the initial state of measuring equipment, and enabling the measuring direction to coincide with a line segment FO, namely the position of a vertical section.
Preferably, the measuring equipment comprises a laser range finder, a rotating motor, an angle encoder and an inclinometer, and the rotating motor is used for driving the laser range finder to rotate.
Preferably, in step S220, after the measurement point F is selected, the initial orientation of the measurement point F is the point N, and the direction of the line segment AN is the initial orientation of the measurement device.
In conclusion, the beneficial effects of the invention are as follows: 1. the non-contact measurement is adopted, the measurement time is not limited, the position of the vertical section can be measured and judged in real time, the channel is not needed, and the safety is good;
2. the measuring points are few, the measuring operation is simple, and the data is reliable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a straight line segment measurement of the present invention;
fig. 2 is a schematic view of the structure of the curve segment measurement of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Referring to fig. 1-2, the present invention provides a method for determining a vertical section in a non-contact measurement of a railway platform clearance, including a straight line segment measurement and a curve segment measurement, where the straight line segment and the curve segment respectively correspond to the vertical sections of the positions of the straight line segment and the curve segment of the platform, and the straight line segment measurement includes the following steps:
step S110, determining a measuring point, taking a rail closest to the platform as a reference, and taking any point on the other side of the rail as a measuring point A;
s120, selecting comparison points, measuring the distance AE between the measurement point A and any point E on the comparison rail by taking the measurement point A as an original point, and respectively selecting a comparison point B and a comparison point C on the rails on the two sides of the point E;
step S130, data measurement, namely respectively measuring distances AB and AC between a comparison point B and a comparison point C and A, and simultaneously recording a rotation angle alpha 1 when the point B is measured and a rotation angle alpha 2 when the point C is measured;
step S140, calculating data, wherein in a triangle ABC consisting of a point A, a point B and a point C, an angle BAC = alpha 1+ alpha 2, the angles of the angle ABC and the angle ACB can be determined by solving the triangle, after a perpendicular line is led from the point A to the line segment BC, the perpendicular line is sufficient as a point D, AD is a perpendicular line of the BC, the extension line of AD is a vertical section position, angle EAD is alpha, an alpha angle is obtained by solving the triangle, and the measuring equipment rotates alpha angle under an initial position, namely the vertical section position;
the curve segment measurement comprises the following steps:
step S210, determining a measuring point, selecting a measuring point F on the outer side of the arc top of the curve section of the rail, wherein the initial orientation of the measuring point F is a point N after the measuring point F is selected, and the direction of a line segment AN is the initial orientation of the measuring equipment;
step S220, selecting comparison points, taking the measurement point F as an original point, enabling the measurement equipment to face a curve section of the rail, selecting three comparison points on the curve section of the rail, wherein the three comparison points are respectively a point G, a point H and a point I, measuring distances FG, FH and FI between the three points and the point F respectively, and when the distances between the point G, the point H and the point I are measured, rotating angles of the measurement equipment are respectively alpha 3, alpha 4 and alpha 5;
step S230, data calculation, namely taking a point G, a point H and a point I as three points to make a circle, determining a center point O and a radius r through calculation, connecting the point F and the point O, simultaneously taking a connecting line of any comparison point and the center point O as a radius to form a triangle, taking the point G as an example, forming a triangle FGO, solving the triangle to obtain a & lt GFO in the triangle, subtracting the & lt GFO from a corresponding rotation angle during distance measurement of the comparison point, namely & lt GFO-alpha 3, obtaining a rotation point position adjustment angle alpha 7, rotating alpha 7 under the initial state of measuring equipment, and enabling the measuring direction to coincide with a line segment FO, namely, a vertical section position.
As an optional implementation manner, the measuring device includes a laser range finder, a rotating electrical machine, an angle encoder and an inclinometer, the rotating electrical machine is used for driving the laser range finder to rotate, the laser range finder is arranged on the inclinometer, the inclinometer can measure an inclination angle of the laser range finder, the angle encoder is arranged below the inclinometer, and in the measuring process, the inclinometer can measure a rotation angle of the inclinometer during laser ranging and rotation.
By adopting the judging method and adopting the non-contact measurement, the measuring process does not need to be carried out, the safety is good, the measuring time is not limited, and the accuracy is good.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (3)
1. A method for judging a vertical section in non-contact measurement of a railway platform clearance is characterized by comprising a straight line section measurement and a curve section measurement, wherein the straight line section measurement comprises the following steps:
step S110, determining a measuring point, taking a rail closest to the platform as a reference, and taking any point on the other side of the rail as a measuring point A;
s120, selecting comparison points, measuring the distance AE between the measurement point A and any point E on the comparison rail by taking the measurement point A as an original point, and respectively selecting a comparison point B and a comparison point C on the rails on the two sides of the point E;
step S130, data measurement, namely respectively measuring distances AB and AC between a comparison point B and a comparison point C and A, and simultaneously recording a rotation angle alpha 1 when the point B is measured and a rotation angle alpha 2 when the point C is measured;
step S140, calculating data, wherein in a triangle ABC consisting of a point A, a point B and a point C, an angle BAC = alpha 1+ alpha 2, the angles of the angle ABC and the angle ACB can be determined by solving the triangle, after a perpendicular line is led from the point A to the line segment BC, the perpendicular line is sufficient as a point D, AD is a perpendicular line of the BC, the extension line of AD is a vertical section position, angle EAD is alpha, an alpha angle is obtained by solving the triangle, and the measuring equipment rotates alpha angle under an initial position, namely the vertical section position;
the curve segment measurement comprises the following steps:
step S210, determining a measuring point, and selecting a measuring point F on the outer side of the arc top of the rail curve section;
step S220, selecting comparison points, taking the measurement point F as an original point, enabling the measurement equipment to face a curve section of the rail, selecting three comparison points on the curve section of the rail, wherein the three comparison points are respectively a point G, a point H and a point I, measuring distances FG, FH and FI between the three points and the point F respectively, and when the distances between the point G, the point H and the point I are measured, rotating angles of the measurement equipment are respectively alpha 3, alpha 4 and alpha 5;
step S230, data calculation, using a point G, a point H and a point I as three points to make a circle, determining a center point O and a radius r through calculation, connecting the point F and the point O, simultaneously using a connecting line of any comparison point and the center point O as a radius to form a triangle, solving the triangle to obtain an acute angle alpha 6 of the triangle using the point F as a vertex, subtracting the alpha 6 from a corresponding rotation angle when the comparison point is measured to obtain a rotation point position adjusting angle alpha 7, rotating the alpha 7 under the initial state of the measuring equipment, and coinciding a measuring direction with a line segment FO to obtain a vertical section position.
2. The method of claim 1, wherein the vertical section is determined by a non-contact measurement method for a railway platform boundary, comprising: the measuring equipment comprises a laser range finder, a rotating motor, an angle encoder and an inclinometer, wherein the rotating motor is used for driving the laser range finder to rotate.
3. The method of claim 1, wherein the vertical section is determined by a non-contact measurement method for a railway platform boundary, comprising: in step S220, after the measurement point F is selected, the initial orientation is the point N, and the direction of the line segment AN is the initial orientation of the measurement device.
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| CN202010626878.1A CN111750829B (en) | 2020-07-02 | 2020-07-02 | Method for judging vertical section in non-contact measurement of railway platform clearance |
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| CN202010626878.1A CN111750829B (en) | 2020-07-02 | 2020-07-02 | Method for judging vertical section in non-contact measurement of railway platform clearance |
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| CN111750829B true CN111750829B (en) | 2022-06-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1480709A (en) * | 2002-06-25 | 2004-03-10 | ���µ繤��ʽ���� | Laser rangefinder |
| JP2014240262A (en) * | 2013-06-12 | 2014-12-25 | 株式会社東芝 | Track inspection apparatus |
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