阅读说明：本技术 一种长大桥轨道的检测方法、系统、可读存储介质及检测装置 (Detection method and system for long bridge track, readable storage medium and detection device ) 是由 陶捷 朱洪涛 于 2020-07-17 设计创作，主要内容包括：本发明公开了一种长大桥轨道的检测方法,应用于对长大桥上的轨道几何状态的检测,包括以下步骤：实时获取所述测量装置沿轨道运行的轨迹；每隔指定距离获取所述测量装置上的第一坐标点的坐标和桥上第二坐标点的坐标,根据所述第一坐标点和所述第二坐标点生成距离向量；获取每个所述距离向量的长度,若任意所述距离向量的长度小于或大于预设的基准长度,判定所述第一坐标点处的轨道存在偏差。本发明直接获得测量装置上的点到桥上指定点的距离,以此判断轨道是否合格,并获得偏差值,较直接获取轨迹精确坐标来判断轨道与桥上设施及构筑物的限界是否合格具有更高精度和可靠性。本发明还公开了采用上述方法的系统、可读存储介质及检测装置。(The invention discloses a detection method of a long bridge track, which is applied to the detection of the geometrical state of the track on a long bridge and comprises the following steps: acquiring the track of the measuring device running along the track in real time; acquiring coordinates of a first coordinate point on the measuring device and coordinates of a second coordinate point on the bridge at intervals of a specified distance, and generating a distance vector according to the first coordinate point and the second coordinate point; and acquiring the length of each distance vector, and judging that the track at the first coordinate point has deviation if the length of any distance vector is smaller than or larger than a preset reference length. The invention directly obtains the distance from the point on the measuring device to the appointed point on the bridge, thereby judging whether the track is qualified or not, obtaining the deviation value, and directly obtaining the track accurate coordinate to judge whether the limit of the track, facilities and structures on the bridge is qualified or not, and having higher precision and reliability. The invention also discloses a system, a readable storage medium and a detection device adopting the method.)

1. A detection method of a long bridge track is applied to the detection of the geometrical state of the track on a long bridge, and is characterized by comprising the following steps:

controlling a measuring device to move along the track, and acquiring the track of the measuring device in real time;

selecting a plurality of measuring points on the track, when the measuring device stops at the measuring points, acquiring coordinates of a first coordinate point on the measuring device, acquiring coordinates of a second coordinate point on the edge of the long and large bridge corresponding to the first coordinate point, and generating a distance vector according to the first coordinate point and the second coordinate point, wherein the distance vector is perpendicular to the track by taking the first coordinate point as a vertical foot;

and acquiring the length of each distance vector, if the length of any distance vector is smaller than or larger than a preset reference length, judging that the track at the corresponding first coordinate point has deviation on the position, and calculating the difference between the length of the distance vector and the reference length to obtain a deviation value.

2. The method for detecting the long bridge track according to claim 1, wherein the real-time acquisition of the track of the measuring device is obtained by a gyroscope or an inertial navigation system arranged on the measuring device.

3. The method according to claim 1, wherein the first coordinate point is a satellite positioning measurement antenna provided on the measurement device, and a connection line between the first coordinate point and the second coordinate point is kept perpendicular to a direction in which the measurement device is to travel during measurement.

4. The method for detecting a long bridge track according to claim 1, wherein a first antenna and a second antenna are respectively disposed at a front end and a rear end of the measuring device, a connecting line between the first antenna and the second antenna is parallel to a traveling direction of the measuring device, and is used for obtaining coordinates of a third coordinate point and a fourth coordinate point, respectively, the second coordinate point, the third coordinate point and the fourth coordinate point form a triangle, and a foot of the second coordinate point on the connecting line between the third coordinate point and the fourth coordinate point is the first coordinate point.

5. The method for detecting a long bridge orbit according to claim 4, wherein the coordinates of the second coordinate point, the third coordinate point and the fourth coordinate point are obtained by a reference station-mobile station differential system or by a mobile station-mobile station relative positioning.

6. The method as claimed in claim 1, wherein the deviation value includes a lateral deviation and a vertical deviation of the track.

7. The utility model provides a detecting system of big bridge track, is applied to the detection to the track geometric status on big bridge, its characterized in that includes:

the track acquisition module is used for controlling the measuring device to move along the track and acquiring the track of the measuring device in real time;

the distance vector acquisition module is used for selecting a plurality of measurement points on the track, acquiring the coordinates of a first coordinate point on the measurement device when the measurement device stops at the measurement points, acquiring the coordinates of a second coordinate point on the edge of the bridge girder corresponding to the first coordinate point, and generating a distance vector according to the first coordinate point and the second coordinate point, wherein the distance vector is perpendicular to the track by taking the first coordinate point as a vertical foot;

and the deviation acquisition module is used for acquiring the length of each distance vector, acquiring the first coordinate points corresponding to all the distance vectors if the length of any distance vector is smaller than or larger than a preset reference length, judging the deviation of the track at the first coordinate point, and calculating the difference between the length of the distance vector and the reference length to acquire a deviation value.

8. A readable storage medium having stored thereon computer instructions, characterized in that the instructions, when executed by a processor, implement the method of any one of claims 1 to 6.

9. A detection apparatus comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of any one of claims 1 to 6 when executing the program.

Technical Field

The invention relates to the technical field of track detection, in particular to a method and a system for detecting the geometric state of a long and large bridge track, a readable storage medium and a detection device.

Background

With the rapid development of railways in China, the operation speed is continuously improved, and the requirement on the precision of the control on the geometric state of the railway track is higher and higher.

After the railway track is paved and in the track operation process, the geometric state of the track needs to be detected to judge whether the smoothness of the track is good or not and whether a reasonable safety limit is kept between the track and peripheral facilities and structures or not. In the roadbed section of the railway line, detector instruments such as a common track inspection instrument, a track measuring instrument and the like move along the track to acquire the inertia track of the track in real time, and coordinate constraint is carried out on the inertia track by the accurate coordinate in combination with measurement of the accurate coordinate of a track positioning point arranged at every specified distance, so that the full-line coordinate control of the track is realized.

However, due to the fact that the long and large bridge generates elastic-plastic deformation such as yaw, sag, twist and drift along with the influence of weather or seasons, for example, a tiger door bridge, namely, the coordinates of the long and large bridge are uncertain, the safety limit between the track on the long and large bridge and surrounding facilities and structures cannot be guaranteed by the existing method for accurately measuring and controlling the coordinates of the railway track, and therefore detection instruments such as a common track inspection instrument and a track measuring instrument and typical application methods thereof have applicability problems on the long and large bridge.

Disclosure of Invention

The invention aims to provide a method for detecting the geometric state of a long and large bridge track, which can reduce errors.

A detection method of a long bridge track is applied to the detection of the geometrical state of the track on a long bridge and comprises the following steps:

controlling a measuring device to move along the track, and acquiring the track of the measuring device in real time;

selecting a plurality of measuring points on the track, when the measuring device stops at the measuring points, acquiring coordinates of a first coordinate point on the measuring device, acquiring coordinates of a second coordinate point on the edge of the long and large bridge corresponding to the first coordinate point, and generating a distance vector according to the first coordinate point and the second coordinate point, wherein the distance vector is perpendicular to the track by taking the first coordinate point as a vertical foot;

and acquiring the length of each distance vector, if the length of any distance vector is smaller than or larger than a preset reference length, judging that the track at the corresponding first coordinate point has deviation on the position, and calculating the difference between the length of the distance vector and the reference length to obtain a deviation value.

The invention has the beneficial effects that: the distance from a point on the measuring device to a specified point on the bridge is directly obtained, so that whether the track is qualified or not is judged, a deviation value is obtained, the precision is higher than that of judging whether the track is qualified or not by obtaining the track according to the accurate coordinates, and the error is reduced; the accurate distance vector can be obtained by directly depending on the dynamic difference without accurate coordinates in the obtained coordinates.

In addition, the detection method of the long bridge track provided by the invention can also have the following additional technical characteristics:

further, the real-time acquisition of the track of the measuring device is obtained through a gyroscope or an inertial navigation system arranged on the measuring device.

Further, the first coordinate point is a satellite positioning measurement antenna arranged on the measurement device, and during measurement, a connection line between the first coordinate point and the second coordinate point is kept perpendicular to a direction to be traveled of the measurement device.

Furthermore, the front end and the rear end of the measuring device are respectively provided with a first antenna and a second antenna, a connecting line between the first antenna and the second antenna is parallel to the advancing direction of the measuring device and is respectively used for obtaining coordinates of a third coordinate point and a fourth coordinate point, the second coordinate point, the third coordinate point and the fourth coordinate point form a triangle, and the foot of the second coordinate point on the connecting line of the third coordinate point and the fourth coordinate point is the first coordinate point.

Further, the coordinates of the second coordinate point, the third coordinate point and the fourth coordinate point are obtained by a reference station-mobile station differential system or by mobile station-mobile station relative positioning.

Further, the deviation value includes a lateral deviation and a vertical deviation of the track.

The invention also aims to provide a detection system for the track of the long and large bridge, which is applied to the detection of the geometric state of the track on the long and large bridge and comprises the following steps:

the track acquisition module is used for controlling the measuring device to move along the track and acquiring the track of the measuring device in real time;

the distance vector acquisition module is used for selecting a plurality of measurement points on the track, acquiring the coordinates of a first coordinate point on the measurement device when the measurement device stops at the measurement points, acquiring the coordinates of a second coordinate point on the edge of the bridge girder corresponding to the first coordinate point, and generating a distance vector according to the first coordinate point and the second coordinate point, wherein the distance vector is perpendicular to the track by taking the first coordinate point as a vertical foot;

and the deviation acquisition module is used for acquiring the length of each distance vector, acquiring the first coordinate points corresponding to all the distance vectors if the length of any distance vector is smaller than or larger than a preset reference length, judging the deviation of the track at the first coordinate point, and calculating the difference between the length of the distance vector and the reference length to acquire a deviation value.

The invention also proposes a readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the method described above.

The invention also proposes a detection device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method described above when executing the program.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a method for detecting a long bridge track according to a first embodiment of the present invention;

FIG. 2 is a schematic diagram of obtaining a distance vector according to a first embodiment of the present invention;

FIG. 3 is a diagram illustrating the acquisition of a distance vector according to a second embodiment of the present invention;

fig. 4 is a block diagram showing a detection system for a long bridge track according to a third embodiment of the present invention.

Detailed Description

In order to make the objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1, a first embodiment of the invention provides a method for detecting a track of a long bridge, which is applied to detect the track of the long bridge, and includes the following steps.

S1, controlling a measuring device to move along the track, and acquiring the track of the measuring device in real time.

In this embodiment, the measuring device is a trolley structure, the measuring device is placed on the rail, and then the measuring device is controlled to move along the rail, and the track of the whole rail is obtained through a gyroscope arranged on the measuring device. When the measuring device needs to measure a certain point with higher precision, the measuring device can be stopped and still measured for 5-10 minutes.

In other embodiments, the gyroscope may be replaced with an inertial navigation system.

The gyroscope has the advantages that short-time accuracy is high, the general long bridge is 1-5 km, and under the condition, the gyroscope can completely meet measurement requirements and has higher accuracy than satellite positioning.

S2, selecting a plurality of measuring points on the track, obtaining the coordinates of a first coordinate point on the measuring device when the measuring device stops at the measuring points, obtaining the coordinates of a second coordinate point on the edge of the long and large bridge corresponding to the first coordinate point, and generating a distance vector according to the first coordinate point and the second coordinate point, wherein the distance vector is perpendicular to the track by taking the first coordinate point as a vertical foot.

It should be noted that, the measurement point is a point arranged at every specified distance, the specified distance can be selected according to the actual situation, and the shorter the specified distance is, the thinner the measurement is for the track.

In this embodiment, the second coordinate point is the satellite positioning measurement antenna of setting on long and large bridge guardrail, and this antenna can lay on long and large bridge for a long time, also can be detachable, when needs parking measurement, installs the antenna on long and large bridge guardrail, removes the antenna again after the measurement is accomplished, then measuring device takes the antenna to remove to next parking measurement point together. In other embodiments, the second coordinate point may also be any point on the large bridge.

Referring to fig. 2, it should be noted that, when acquiring the coordinates of the first coordinate point a and the second coordinate point B, a satellite may be used for acquiring, or a satellite and a base station may be used for acquiring simultaneously, the acquired coordinates are not precise coordinates, but since the first coordinate point a and the second coordinate point B are far away from the satellite, it can be understood that the error between the two is the same, the distance vector a 'B' acquired according to the first coordinate point a and the second coordinate point B is precise, and the length of the distance vector a 'B' is also precise.

It should be noted that, since the track and the guardrail are required to be kept parallel when the track is laid, when the distance vector a 'B' is perpendicular to the track, the distance between the track and the guardrail can be obtained according to the width of the measuring device itself, and when the first coordinate point is located on the center line of the track, the length of the distance vector a 'B' can also be considered as the distance from the center of the track to the guardrail.

S3, the length of each distance vector is obtained, if the length of any distance vector is smaller than or larger than a preset reference length, the first coordinate points corresponding to all the distance vectors are obtained, the position deviation of the track at the first coordinate point is judged, the difference between the length of the distance vector and the reference length is calculated, and a deviation value is obtained.

It can be understood that, when the track is constructed, the distance between the track and the guardrail is a preset reference value, therefore, under the condition that the track is qualified, the length of the distance vector should be the same as the preset reference value, that is, the obtained distance between the track and the guardrail should be the same as the distance during construction, and if the distance between the track and the guardrail is different from the preset reference value, the track construction is unqualified, and the track has deviation.

It should be noted that the deviation can be calculated as positive and negative values for the convenience of reference of the subsequent repairman, and the coordinates in this embodiment include longitude, latitude and elevation, which can be understood as spatial coordinates, and the deviation can be decomposed into lateral deviation and vertical deviation.

The method has the advantages that the distance from the point on the measuring device to the appointed point on the bridge is directly obtained, so that whether the track is qualified or not is judged, the deviation value is obtained, the precision is higher than that of judging whether the track is qualified or not by obtaining the track according to the accurate coordinates, and the error is reduced; the accurate distance vector can be obtained by directly depending on the dynamic difference without accurate coordinates in the obtained coordinates.

Specifically, the first coordinate point is an antenna arranged on the measuring device, and during measurement, a connection line between the first coordinate point and the second coordinate point is kept perpendicular to a direction of travel of the measuring device.

It should be noted that the measurement points are multiple points selected along the track, and this embodiment can calculate the deviation at the measurement points of the track, and to obtain more comprehensive deviation of the whole track, the arrangement of the measurement points can be encrypted.

A second embodiment of the present invention provides a method for detecting a long bridge track, which is basically the same as the first embodiment, except that:

referring to fig. 3, a first antenna and a second antenna are respectively disposed at the front end and the rear end of the measuring device, a connecting line between the first antenna and the second antenna is parallel to the driving direction of the measuring device, and is respectively used to obtain coordinates D ' of a third coordinate point C ' and a fourth coordinate point, the second coordinate point B ', the third coordinate point C ', and the fourth coordinate point D ' form a triangle, and a foot of the second coordinate point B ' facing the connecting line between the third coordinate point C ' and the fourth coordinate point D ' is the first coordinate point a '.

It should be noted that, in the actual detection process, the antennas on the guardrail of the long and large bridge are generally installed manually, if only one antenna is arranged on the measuring device, as in the first embodiment, it is difficult to achieve that a 'B' is completely perpendicular to the track or the measuring device, and a certain error exists, and when the measuring device adopts a front antenna and a rear antenna, a vector a 'B' can be obtained through a triangle, which is much higher than the first embodiment.

In this embodiment, the coordinates of the second coordinate point, the third coordinate point and the fourth coordinate point are obtained by a reference station-mobile station differential system, and in other embodiments, the coordinates can also be obtained by mobile station-mobile station relative positioning.

Referring to fig. 4, a third embodiment of the present invention provides a system for detecting a track of a long and large bridge, which is applied to detect a geometric state of the track on the long and large bridge, and includes:

the track acquisition module is used for controlling the measuring device to move along the track and acquiring the track of the measuring device in real time;

the distance vector acquisition module is used for selecting a plurality of measurement points on the track, acquiring the coordinates of a first coordinate point on the measurement device when the measurement device stops at the measurement points, acquiring the coordinates of a second coordinate point on the edge of the bridge girder corresponding to the first coordinate point, and generating a distance vector according to the first coordinate point and the second coordinate point, wherein the distance vector is perpendicular to the track by taking the first coordinate point as a vertical foot;

and the deviation acquisition module is used for acquiring the length of each distance vector, acquiring the first coordinate points corresponding to all the distance vectors if the length of any distance vector is smaller than or larger than a preset reference length, judging the deviation of the track at the first coordinate point, and calculating the difference between the length of the distance vector and the reference length to acquire a deviation value.

In this embodiment, the front end and the rear end of the measuring device are respectively provided with a first antenna and a second antenna, a connecting line between the first antenna and the second antenna is parallel to the driving direction of the measuring device and is respectively used for obtaining coordinates of a third coordinate point and a fourth coordinate point, the second coordinate point, the third coordinate point and the fourth coordinate point form a triangle, and the second coordinate point faces the third coordinate point and the fourth coordinate point, and the first coordinate point is the foot of the connecting line of the second coordinate point.

A fourth embodiment of the invention proposes a readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the method of the second embodiment.

A fifth embodiment of the invention proposes a detection apparatus comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of the second embodiment when executing the program.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.