CN211522692U - High-speed railway track plate structure displacement monitoring devices that rectifies - Google Patents
High-speed railway track plate structure displacement monitoring devices that rectifies Download PDFInfo
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Abstract
The utility model discloses a displacement deviation rectifying and monitoring device for a high-speed railway track slab structure, which comprises a target device, a laser energy distance measuring device and a computer acquisition and processing device; the target device comprises a receiver, a downlink track, a display and a digital camera, wherein a resolving unit and a CCD (charge coupled device) sensor are arranged in the receiver, the receiver is installed on the side surface of the downlink track, and the receiver is connected with the display; the laser energy ranging device comprises a plurality of groups of sensors, a laser and an ascending track, wherein the laser is installed on the side surface of the ascending track, and the laser and the receiver are correspondingly arranged. The utility model discloses well monitoring facilities that uses installation dismantles fast, convenient, maneuverability is strong. The device is mainly customized from the aspect of structure, the structure of the device is miniaturized, and the device can be effectively prevented from being damaged unintentionally in the construction process.
Description
Technical Field
The utility model relates to a high-speed railway track board monitoring technology field especially relates to high-speed railway track board structure displacement monitoring devices that rectifies.
Background
With the rapid development of railway facility construction in China, newly-built railway engineering construction projects are more and more, and the problem of center line deviation of a track line caused by factors such as uneven settlement of a foundation and the like is gradually shown on a high-speed railway track operation line in China in the railway construction and operation process. In order to realize the high-efficiency, high-precision and high-accuracy monitoring of the whole process of the displacement deviation correction of the high-speed railway track slab structure, the intellectualization of less cross interference, track plane linear real-time display, interference and abnormity automatic processing, alarming and the like in the monitoring process is realized as far as possible, and the track health safety detection/monitoring work is required. The displacement deviation correction is mainly to inspect and evaluate the appearance and structural performance of the track, and during deviation correction construction, the transverse displacement of the track slab structure needs to be monitored in real time, so that a basis is provided for implementation and adjustment of a deviation correction scheme. At present, the displacement and deviation monitoring of the track is completed through various monitoring devices, and the traditional detection/monitoring devices mainly have the problems of low efficiency, low detection precision, slow field installation and disassembly, easy external interference and the like. Moreover, as the structure of the track material is complicated, the requirement for detection/monitoring is higher, and the traditional detection/monitoring technical means can expose more and more limitations and disadvantages.
In conclusion, the existing track slab displacement monitoring technology has the problems of large measurement error, easiness in external interference, inconvenience in mounting and dismounting and low equipment safety.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the utility model discloses an aim at provides high-speed railway track plate structure displacement monitoring devices that rectifies, the utility model discloses the monitoring facilities installation that well use is dismantled fast, convenient, maneuverability is strong. The device is mainly customized from the aspect of structure, the structure of the device is miniaturized, and the device can be effectively prevented from being damaged unintentionally in the construction process. In addition, because there is the transported substance dolly to pass through on the rail, consequently, be different from traditional equipment, this equipment fixing has ensured equipment fixing's fastness in the suitable position of rail side.
The displacement deviation rectifying and monitoring device for the high-speed railway track slab structure comprises a target device, a laser energy distance measuring device and a computer acquisition and processing device;
the target device comprises a receiver, a downlink track, a display and a digital camera, wherein a resolving unit and a CCD (charge coupled device) sensor are arranged in the receiver, the receiver is installed on the side surface of the downlink track, and the receiver is connected with the display;
the laser energy ranging device comprises a plurality of groups of sensors, a laser and an ascending track, wherein the laser is installed on the side surface of the ascending track, and the laser and the receiver are correspondingly arranged.
Preferably, the receiver comprises a shell, a filter plate is arranged on one side of the shell, a rear cover is installed on the other side of the shell, a data output protection interface is installed on the rear cover, and a resolving unit and a CCD sensor are arranged in the shell.
Preferably, a sealing ring and a wireless transmission device are annularly arranged at the joint of the rear cover and the shell.
Preferably, the target device and the laser energy distance measuring device are in signal connection with the computer acquisition and processing device.
Preferably, the number of the receivers and the number of the laser devices are 1-200.
Preferably, the light target is composed of two parallel linear light sources and a black back plate.
Preferably, the receiver and laser are in wireless communication with each other.
Preferably, the receiver and laser may be solar powered or battery powered.
Preferably, the receiver and the laser are installed with the downlink track through magnet attraction.
The utility model provides a beneficial effect is: the utility model discloses well monitoring facilities that uses installation dismantles fast, convenient, maneuverability is strong, mainly carries out customization very much from the aspect of the structure, and equipment structure is miniaturized, can effectively prevent to damage by accident to equipment in the work progress, in addition, because there is the material dolly process of transporting on the rail, consequently, is different from traditional equipment, and this equipment fixing has ensured equipment fixing's fastness in the suitable position of rail side, and measures the precision height.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a plan view of the equipment installation of the displacement deviation rectifying and monitoring device for the track slab structure of the high-speed railway provided by the utility model;
fig. 2 is a working flow chart of the displacement deviation rectifying and monitoring device for the track slab structure of the high-speed railway provided by the utility model;
fig. 3 is a flow chart of the installation work of the displacement deviation rectifying and monitoring device for the track slab structure of the high-speed railway provided by the utility model;
fig. 4 is a structural diagram of a receiver in the displacement deviation rectifying and monitoring device for the track slab structure of the high-speed railway provided by the utility model;
fig. 5 is a target in the displacement deviation rectifying and monitoring device for the track slab structure of the high-speed railway provided by the utility model;
FIG. 6 is a detailed diagram of the working principle of the equipment of the displacement deviation rectifying and monitoring device for the track slab structure of the high-speed railway provided by the utility model;
fig. 7 is the utility model provides a high-speed railway track slab structure deviation correcting system schematic diagram.
In the figure: 1-a data output protection interface; 2-rear cover; 3-sealing ring; 4-a shell; 5-a resolving unit; 6-CCD sensor; 7-a filter plate; 8-an upstream track; 9-a laser; 10-a receiver; 11-descending track, 12-light target, 13-camera and 14-CPIII measuring point pier.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
Referring to fig. 1-7, a displacement deviation rectifying and monitoring device for a high-speed railway track slab structure comprises a target device, a laser energy distance measuring device and a computer acquisition and processing device;
the target device is composed of a receiver 10 for carrying out graphic sampling and quantification, a downlink track 11, a display and a digital camera 13, wherein a resolving unit 5 and a CCD (charge coupled device) sensor 6 are arranged in the receiver 10, the receiver 10 is installed on the side surface of the downlink track 11, and the receiver 10 is connected with the display;
the laser energy ranging device consists of a laser 9 and an uplink rail 8, wherein the laser 9 is arranged on the side surface of the uplink rail 8, and the laser 9 and a receiver 10 are arranged correspondingly;
the computer acquisition processing device is used for determining the accurate position of the image point and determining the space position of the target according to the object-image relationship.
The method comprises the following steps:
s1: after the energy of the laser 9 enters the filter plate 7, the CCD sensor 6 collects the image of the laser 9, and the calculating unit 5 carries out related calculation;
s2: after calculation, when the displacement of the high-speed railway track slab structure is corrected and the displacement is changed under the action of load factors, the target also generates equivalent displacement along with the correction of the high-speed railway track slab structure.
The utility model discloses a carry out the sensor configuration that will shine energy conversion and become digital image, through the electric energy with the input and detect the sensitive sensor material of energy and make up mutually to special type, turn into the voltage to the input energy, the output voltage waveform is the response of sensor, through the digitization of sensor output response, obtains a digital quantity from each sensor. A more commonly used geometry for a single sensor strip is a sensor strip combined from embedded sensor forms, which provides imaging units in one direction and imaging in the other direction perpendicular to the movement of the sensor strip. This entire sensing device band can have 4000 or more sensors embedded. The above is that the utility model uses the receiver 10 in combination with the transmitter-side sensor.
When the external energy (laser visible light or invisible light) is directly irradiated to the receiver 10, the receiver 10 performs pattern sampling and quantization, and after the receiver 10 receives the energy of the transmitting end, the receiver 10 performs a continuous image reading, in which the X-axis and Y-axis coordinates and the amplitude of the image are continuous. Then, the digital form is carried out, and the digitization process needs to carry out relevant gray scale, spatial filtering, discrete digital integration and fusion in the aspects of regions and boundaries.
The displacement deviation-rectifying monitoring device for the high-speed railway track slab structure mainly comprises a target device, a laser energy distance measuring device and a computer acquisition and processing device, wherein a cursor target is formed by a linear light source which is horizontally placed and is usually fixed on a point to be rectified of the high-speed railway track slab structure; the digital camera 13 is fixed on a stable mechanical device, the cursor target is imaged on a photosensitive surface of the digital camera 13 through a long-focus optical system of the camera 13, the computer acquires an image of the cursor target from the camera 13 through an image acquisition card, the accurate position of an image point is determined through image processing and identification, and finally the spatial position of the cursor target is determined through an object-image relationship. When the displacement of the high-speed railway track slab structure is corrected and changed under the action of load factors, the cursor target also generates equivalent displacement along with the correction of the high-speed railway track slab structure.
Is provided at t1At the time, the position of the optical target is O (t)1) The central coordinate of which is (x (t)1),y(t1) β lens magnification at t2At the time, the position of the optical target is O (t)2) The central coordinate of which is (x (t)2),y(t2) ); at the same time, the image point is correspondingly from O' (t) on the acquired digital image1) The coordinate is (M (t)1),N(t1) Move to O' (t)2) The coordinate is (M (t)2),N(t2))。
Assuming that the pixel size of the digital camera 13 is Pmm × Pmm and the pixel pitch is Pmm, the deflection variation of the high-speed railway track slab structure deviation correction is known from the geometrical optics imaging principle as follows:
wherein the pixel pitch P is determined by the camera 13 and the magnification β of the lens can be obtained by calibration if the position of the cursor pixel at different times is known (M (t)1),N(t1))、(M(t2),N(t2) The two-dimensional displacement change of the high-speed railway track slab structure deviation correction can be calculated according to the formulas 2.1-1 and 2.1-2, the median value is explained in the vertical direction, namely delta y, because the high-speed railway track slab structure deviation correction has vertical, horizontal and longitudinal displacements, and other principles are similar.
The actual target of the deviation rectifying and imaging system for the track slab structure of the high-speed railway consists of two parallel line light sources and a black back plate, as shown in fig. 5.
Conventionally, a gray-scale weighted gravity center algorithm is commonly used to calculate the center position on the cursor target, and then the gravity center coordinates of two line light sources at the center of the target are:
in the formula: j is the longitudinal coordinate of the line light source area coincident pixels; f (i, j) is the gray value of the pixel, and the coordinate of the center position on the cursor target is as follows:
the relation of deflection measurement can be known from the formulas 2.1-1 and 2.1-2The key is to determine the imaging point O' (t) of the luminous target 12 on the image plane of the camera 131)、O′(t2) And consequently its change in position in the vertical direction Δ y, to determine this change Δ y, the point O' (t) imaged by the luminous target 12 is imaged1) And O' (t)2) The illumination of the imaging point of the light-emitting target 12 on the image plane of the camera 13 should be recognized by the photosensitive surface of the camera 13, so that the illumination must be greater than the sensitivity threshold of the photosensitive surface of the camera 13, and since the background will generate diffuse reflection under the external illumination, when the diffuse reflection light of the background enters the optical system of the human camera 13 for imaging, the contrast of the imaging of the light-emitting target 12 and the background will be reduced, in order to reasonably construct the whole system, the influence factors such as the influence of weather on the measurement, the illumination of the image plane of the light-emitting target 12 of the system on the image plane of the camera 13, the imaging contrast and the like, and the photometric characteristics must be analyzed, so as to provide a basis for the design optimization.
When the deviation-rectifying displacement measurement of the high-speed railway track slab structure is carried out, the background is generally railway steel rails, CPIII measuring point piers 14, the surrounding ground and the like, and the backgrounds can be approximately considered as diffuse reflectors with known reflectivity rho B, so that the external illuminance is EEWhen they produce an ambient brightness LBComprises the following steps:
since the background is a diffuse reflector, i.e. a cosine radiator, the illuminance on the image plane imaged by the background can be calculated according to equation 2.4-2:
for the a/D converter with 8 bits as one bit, when the gray scale value of the image point is set, the gray scale value of the image point under saturation illumination is 255, the gray scale value of the image point under sensitive closing illumination is 1, and the gray scale value of the image point under sensitive threshold illumination is 0, so the gray scale value G of the image point of the light emitting target 120And gray value G of image point of backgroundBRespectively as follows:
since the sensitivity threshold of the light-sensitive surface of the digital camera 13 is typically of the order of lux, the equation (which can be reduced to:
the gray contrast between the image point of the luminescent target 12 and the background in the image, called contrast, for the digital camera 13, the contrast between the image point of the luminescent target 12 and the background on the photosensitive surface can be expressed as:
substituting formulae 2.4-2 and 2.4-2 into formulae 2.4-7 can give:
by contrast, if the contrast between the luminescent target 12 and the background image is higher, and the luminescent target 12 and the background image are more easily distinguished, so the contrast between the luminescent target 12 and the background image should be greater than a certain threshold CGOtherwise, the luminescent target 12 cannot be distinguished from the background.
From the formulas 2.4 to 8, p is a reflectance due to the backgroundBAnd the ambient illuminance EEIs not manually selectable or changeable, and thus, the light is intense in the outside (i.e., E)ELarge), the imaging contrast of the system is to be improvedC, only by increasing the brightness L of the luminous target 12, if the subsequent image processing system can correctly obtain the contrast threshold C required by the luminous target 12 imageGStrong background luminance of LBThen, the luminance L of the luminescent target 12 obtained by the formulae 2.4 to 8 must satisfy the following condition:
it can be seen from the formulas 2.4-9 that, for the same luminescent target 12, the contrast of the image will decrease sharply when the ambient light level increases, therefore, to obtain sufficient contrast under such conditions, the luminescent target 12 must have a high brightness, for example, when the sunlight is strongly incident, the ambient light level can be as high as 1.24 × 1051x, if the reflectivity of the background is assumed to be 0.2, the brightness of the background can be calculated to be 7894cd/m2If a contrast threshold C is assumedGIf 0.2 is taken, it can be calculated that the luminance of the light-emitting target 12 must be greater than 11841cd/m2However, since such a high-brightness light source is not available in practice, it is not feasible to simply adopt a method of increasing the brightness L of the light-emitting target 12 under strong direct sunlight, and another approach must be sought for solving the problem.
Brightness L of background due to sunlight irradiationBIncreasing, but keeping the brightness L of the luminescent target 12 constant, results in a decrease in the imaging contrast C of the luminescent target 12, but if the brightness L of the luminescent target 12 can be like the brightness L of the backgroundBSame with sunlight illuminance EEIs increased, the imaging contrast C of the luminescent target 12 can be kept constant. For this purpose, it is conceivable to use a reflectivity which is much higher than the background reflectivity ρBThe reflective target 12 is formed of a material that can replace the luminescent target 12, so that the background brightness L is obtained when the external light is irradiatedBThe brightness L of the retroreflective target 12 is increased at the same time, so that the problem of reduced imaging contrast due to intense illumination can be avoided, and the reflectivity is a key index for the retroreflective target 12. Assume the reflective target 12 has a reflectivity of ρRThe diffuse reflector is arranged when the outside is in the reverse directionIllumination at the light target 12 is EEWhen it produces a luminance LRAnd its imaging illuminance E at the image plane of the camera 13RRespectively as follows:
as can be seen from equations 2.5-7, the imaging contrast C of the reflective target 12 and the background at the image plane of the camera 13 is:
only when the imaging contrast C is greater than a certain threshold CGThen, the subsequent image processing can be carried out, the position of the reflective target 12 is obtained, and the reflectivity rho of the reflective target 12 is determined according to the formula 2.5-12RThe conditions that must be met are:
assuming a reflectivity of 0.2 for the background scene, the reflectivity ρ of the reflective target 12 is selected according to equations 2.5-13RAt 0.6, the contrast ratio can reach 0.5, which can fully satisfy the imaging contrast requirements for the retroreflective target 12 and the background.
In cloudy days with external illumination conditions EELess intense, even nighttime lighting conditions EEIn extremely weak condition, the illumination E 'of the point imaged by the reflective target 12 on the image plane of the camera 13'RMust be higher than the sensitivity threshold E of the light-sensitive surface of the digital camera 13GTherefore, according to the expressions 2.5-2 and 2.5-1, the reflectance ρ of the retroreflective target 12 is determinedRThe formula must also be satisfied:
to is coming toUnder different limit conditions of no strong light in cloudy days and direct strong sunlight in sunny days, the imaging contrast requirement and the imaging sensitivity requirement are met, and the reflectivity rho of the reflective target 12RMust be determined by formula 2.5-13 and formula 2.5-14 simultaneously.
As can be seen from the examination of the formulas 2.5-13 and 2.5-14, the formulas 2.5-13 can completely determine a value to meet the luminosity requirement under the daytime strong illumination condition. However, in the formulas 2.5 to 14, the illuminance E of the external light at the reflective targetEIs a very small value, which may make the denominator close to or even smaller than the numerator, and it is clear that of these two reflectivity requirements, only the former under high light conditions can be guaranteed, while the latter under low light conditions is difficult to guarantee. Therefore, the reflective target is only suitable for use under strong sunlight irradiation in sunny days, but not suitable for use under cloudy days and night conditions with weak external light at night. On the contrary, the luminescent target 12 is only suitable for use under the conditions of cloudy days and nights with weak external illumination at night, and is not suitable for use under strong sunlight illumination on sunny days. Therefore, in order to meet the all-weather monitoring requirement of the high-speed railway track structure displacement deviation correction, the combination of the two needs to be adopted, namely the light-reflecting target 12 is adopted in the daytime, the light-emitting target 12 is adopted in the nighttime, and the reflectivity of the light-reflecting target 12 and the light-emitting brightness of the light-emitting target 12 respectively meet the formulas 2.5-13 and 2.5-9. Because the traditional photoelectric imaging deflection monitoring method only considers the luminous target 12 and does not adopt a reflection target, when the luminous brightness of the luminous target 12 is selected in the traditional method, not only the sensitivity threshold of the photosensitive surface of the camera 13 is considered, but also the contrast under the condition of strong illumination is considered, and the luminous brightness at the moment is often much higher than that when the sensitivity threshold of the photosensitive surface of the camera 13 is considered.
The utility model discloses well monitoring facilities that uses installation dismantles fast, convenient, maneuverability is strong. The device is mainly customized from the aspect of structure, the structure of the device is miniaturized, and the device can be effectively prevented from being damaged unintentionally in the construction process. In addition, because there is the transported substance dolly to pass through on the rail, consequently, be different from traditional equipment, this equipment fixing has ensured equipment fixing's fastness in the suitable position of rail side.
Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.
Claims (8)
1. The utility model provides a high-speed railway track plate structure displacement monitoring devices that rectifies which characterized in that: the system comprises a target device, a laser energy distance measuring device and a computer acquisition and processing device;
the target device comprises a receiver, a downlink track, a display and a digital camera, wherein a resolving unit and a CCD (charge coupled device) sensor are arranged in the receiver, the receiver is installed on the side surface of the downlink track, and the receiver is connected with the display;
the laser energy ranging device comprises a plurality of groups of sensors, a laser and an ascending track, wherein the laser is installed on the side surface of the ascending track, and the laser and the receiver are correspondingly arranged.
2. The high-speed railway track plate structure displacement deviation rectifying monitoring device of claim 1, wherein: the receiver comprises a shell, a filter plate is arranged on one side of the shell, a rear cover is installed on the other side of the shell, a data output protection interface is installed on the rear cover, and a resolving unit and a CCD sensor are arranged in the shell.
3. The high-speed railway track slab structure displacement deviation rectifying and monitoring device of claim 2, wherein: and a sealing ring and a wireless transmission device are annularly arranged at the joint of the rear cover and the shell.
4. The high-speed railway track plate structure displacement deviation rectifying monitoring device of claim 1, wherein: the target device and the laser energy distance measuring device are in signal connection with the computer acquisition and processing device.
5. The high-speed railway track plate structure displacement deviation rectifying monitoring device of claim 1, wherein: the number of the receivers is 1-200 as the same as that of the lasers.
6. The high-speed railway track plate structure displacement deviation rectifying monitoring device of claim 1, wherein: the receiver and the laser are in wireless communication with each other.
7. The high-speed railway track plate structure displacement deviation rectifying monitoring device of claim 1, wherein: the receiver and laser may be solar powered or battery powered.
8. The high-speed railway track plate structure displacement deviation rectifying monitoring device of claim 1, wherein: the receiver, the laser and the downlink track are installed through magnet attraction.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112356880A (en) * | 2020-10-29 | 2021-02-12 | 中国神华能源股份有限公司神朔铁路分公司 | Track system, track displacement monitoring device and method |
| CN116905297A (en) * | 2023-09-12 | 2023-10-20 | 大秦铁路股份有限公司大同工务段 | Dislocation track homing method, dislocation track homing device, dislocation track homing equipment and readable storage medium |
| CN117934795A (en) * | 2024-03-22 | 2024-04-26 | 中铁三局集团有限公司 | Track slab fine adjustment parameter vision accurate identification system and method |
-
2019
- 2019-10-22 CN CN201921776709.5U patent/CN211522692U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112356880A (en) * | 2020-10-29 | 2021-02-12 | 中国神华能源股份有限公司神朔铁路分公司 | Track system, track displacement monitoring device and method |
| CN116905297A (en) * | 2023-09-12 | 2023-10-20 | 大秦铁路股份有限公司大同工务段 | Dislocation track homing method, dislocation track homing device, dislocation track homing equipment and readable storage medium |
| CN116905297B (en) * | 2023-09-12 | 2023-12-12 | 大秦铁路股份有限公司大同工务段 | Dislocation track homing method, dislocation track homing device, dislocation track homing equipment and readable storage medium |
| CN117934795A (en) * | 2024-03-22 | 2024-04-26 | 中铁三局集团有限公司 | Track slab fine adjustment parameter vision accurate identification system and method |
| CN117934795B (en) * | 2024-03-22 | 2024-05-28 | 中铁三局集团有限公司 | Track slab fine adjustment parameter vision accurate identification system and method |
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