CN114228779A - Track alignment monitoring system and method based on wireless sensing - Google Patents
Track alignment monitoring system and method based on wireless sensing Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway 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
- B61K9/08—Measuring installations for surveying permanent way
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
- B61L23/04—Control, warning or like safety means along the route or between vehicles or trains for monitoring the mechanical state of the route
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Abstract
The invention relates to a track linear monitoring system based on wireless sensing, which comprises a sensing mechanism (100), a gateway (200) and a processing computer (300), wherein the sensing mechanism comprises a wireless inclinometer arranged on a track, the wireless inclinometer is used for measuring angle change caused by track deformation and transmitting the angle change to the gateway in a wireless mode according to a certain time interval, the gateway collects data of a plurality of wireless inclinometers and is connected to the processing computer, and the processing computer analyzes and processes the data, calculates track deformation values, further outputs track linear shapes and finally issues and displays monitoring information. The invention also discloses a track linear monitoring method based on wireless sensing. The invention installs a self-powered wireless inclinometer beside a rail to form a sensing mechanism, realizes the remote real-time acquisition of the inclination angle change of a rail structure, analyzes and solves the rail deformation index by combining angle data and a field arrangement scheme, and outputs a deformation value and a rail line shape in a monitoring range.
Description
Technical Field
The invention belongs to the technical field of railway track safety monitoring, and particularly relates to a track linear monitoring system and method based on wireless sensing.
Background
At present, the track structure type of China can be divided into two forms of a ballast track and a ballastless track on the whole, and the increasingly developed operation requirements of high-speed and heavy-duty railways can be basically met. Under the influence of factors such as foundation state change under the line, geological disasters and the like, diseases of different degrees and track linear abnormity can appear on the track structure, the riding comfort of the train is influenced, and the driving safety is even endangered in serious cases.
For the track state detection of the line, China generally takes dynamic and static detection means such as comprehensive detection trains, comprehensive inspection vehicles and track inspection instruments as main means and periodically detects the geometric dimension of the line, the damage of fasteners and the like. However, for some sudden track changes, the periodic detection means cannot timely find and identify the track changes, so that potential safety management is hidden.
At present, the online monitoring aiming at the track line shape mainly adopts static test technologies such as GNSS deformation monitoring, static leveling and the like. When a high-precision detection result is needed, the two technologies need to stably sample data for a certain time to calculate a reliable result, and the requirements of quickly identifying diseases and giving an alarm when track deformation occurs are difficult to meet in timeliness.
The present invention has been made in view of the above circumstances.
Disclosure of Invention
Based on the technical current situation, the invention provides a track alignment monitoring system and method based on wireless sensing, a sensing mechanism is formed by installing and fixing a miniaturized, high-precision and self-powered wireless inclinometer beside a track through a mechanical component specially designed for different track structure forms on the basis of an inclination angle detection technology carrying a wireless sensing network, communication and extra laying of power cables are reduced, remote real-time acquisition of track structure inclination angle changes is realized, an angle data and field arrangement scheme are combined, track structure deformation indexes are analyzed and solved, deformation values and track alignment in a monitoring range are output, an overrun position with potential driving safety hazards is locked in time, early warning and alarm information are issued, the purpose of track state safety monitoring is achieved, and scientific assistance and data support are provided for maintenance and repair of the line.
One of the purposes of the invention is to provide a track alignment monitoring system based on wireless sensing, which comprises a sensing mechanism, a gateway and a processing computer, wherein the sensing mechanism comprises a wireless inclinometer arranged on a track, the wireless inclinometer is used for measuring angle change caused by track deformation and transmitting the angle change to the gateway in a wireless mode according to a certain time interval, the gateway collects data of a plurality of wireless inclinometers and is connected to the processing computer, and the processing computer analyzes and processes the data, calculates track deformation values, further outputs track alignment, and finally issues and displays monitoring information.
Optionally, when the track structure is a ballast track or a continuous ballastless track, the sensing mechanism only comprises a sensing mechanism in the slab; when the track structure is a unit type ballastless track, the sensing mechanism comprises a sensing mechanism in the plate and a sensing mechanism between the plates.
Further, the in-board sensing mechanism includes a first wireless inclinometer fixed to the mounting bracket and a mounting bracket fastened to the sleeper or the track plate. In-board sensing mechanisms are used to monitor horizontal and elevation changes in the sleepers or track slabs. When the track structure is a ballast track, the mounting bracket is fastened on the sleeper; when the track structure is a continuous ballastless track, the mounting bracket is fastened on the track slab.
Furthermore, the inter-plate sensing mechanism comprises a second wireless inclinometer, a first fixed base, a second fixed base and a connecting rod, wherein the first fixed base and the second fixed base are respectively arranged on the track plates at two sides of the joint, one end of the connecting rod is connected with a rotating shaft of the first fixed base, and the other end of the connecting rod is connected with a limiting vertical plate of the second fixed base; the second wireless inclinometer is fastened to the link. The inter-plate sensing mechanism is used for monitoring the relative elevation changes of the two track plates of the unit type ballastless track.
Furthermore, first unable adjustment base includes first PMKD and sets up perpendicularly axis of rotation on the first PMKD, axis of rotation one end with first PMKD fixed connection, the other end is provided with stop device.
Furthermore, the second fixing base comprises a second fixing bottom plate and a limiting vertical plate vertically arranged on the second fixing bottom plate, a long hole is formed in the limiting vertical plate, and an arc surface is arranged between the long hole and the outer surface of the limiting vertical plate.
Furthermore, the connecting rod comprises a connecting rod main body, one end of the connecting rod main body is provided with a rotating sleeve, the other end of the connecting rod main body is connected with a sliding rod, and the upper surface of the connecting rod main body is provided with an inclinometer fixing plate.
The invention also aims to provide a track alignment monitoring method based on wireless sensing, which comprises the following steps:
step 1, calculating the horizontal and high-low displacement variable quantity obtained by a sensing mechanism in a board;
step 2, calculating the high and low displacement variable quantity obtained by the sensing mechanism between the plates;
step 3, further calculating the chord measuring value of the track height and the track structure deformation value of the track level according to the results obtained in the step 1 and the step 2;
and 4, outputting the track line shape along the mileage in the monitoring range according to the track structure deformation data.
Further, the step 1 comprises:
step 101, detecting horizontal and height relative angle variation of a track structure in real time by a sensing mechanism in a plate;
102, when the relative angle variation exceeds a management threshold, sending alarm information in real time;
103, reflecting the height deformation of the rail by the X-axis angle of the inclinometer of the sensing mechanism in the plate, and calculating by adopting the following formula to obtain the height displacement change value of the rail:
Sx＝Lx·tanθx
in the formula, LxFor the spacing of the sensing means in adjacent plates, thetaxIs the angular variation of the X axis of the sensor in the board;
104, reflecting the horizontal deformation of the track by the Y-axis angle of the inclinometer of the sensing mechanism in the plate, and calculating by adopting the following formula to obtain the change value of the horizontal displacement of the track:
Sy＝Ly·tanθy
in the formula, LyIs the width of the track slab, thetayIs the variation of the Y-axis angle of the sensor in the board.
Further, the step 2 specifically includes:
step 201, detecting the relative angle variation between the track slabs in real time by an inter-slab sensing mechanism;
step 202, when the relative angle variation exceeds a management threshold, sending alarm information in real time;
step 203, reflecting the high and low deformation between the track slabs by the X-axis angle of the inter-slab sensing mechanism inclinometer, and calculating by adopting the following formula to obtain the high and low displacement change value between the track slabs:
Sj＝Lj·tan|θj|
in the formula, LjIs the length of the sensing means between the plates, thetajIs the X-axis angular variation of the sensing mechanism between the plates.
Further, the step 3 specifically includes:
step 301, calculating a horizontal displacement value of the track according to the formula in step 104 to obtain Sy；
Step 302, calculating the track height chord value according to the following formula:
Si＝S(i-1)x+Six+Sij
in the formula, i is a track plate number.
It should be noted that, when the track structure is a unit ballastless track, the track structure deformation calculation is performed according to the steps 1, 2 and 3; and when the track structure is a ballast track or a continuous ballastless track, calculating the deformation of the track structure only according to the monitoring data of the sensing mechanism in the slab, namely calculating according to the step 1 and the step 3.
The invention is based on a wireless inclination angle detection technology, calculates and outputs a track deformation index by combining a sensing mechanism with a field arrangement scheme, further obtains track linear information, provides an online monitoring device and a method, and achieves the following beneficial effects:
(1) the method realizes the long-distance on-line monitoring of the track line shape, makes up the defect of insufficient real-time property of periodic detection of the track state, and reduces the working pressure of maintenance and repair of the railway line.
(2) The wireless inclinometer has the advantages of being low in power consumption, small in size, capable of supplying power independently and high in response speed, reducing extra laying of communication and power cables, reducing construction procedures and driving potential safety hazards, achieving timely alarming aiming at the out-of-limit working condition of sudden instability, and effectively guaranteeing driving safety.
(3) A plurality of sensing mechanisms can be networked autonomously, monitoring data in a certain range form a sink node through a gateway, and long-distance, large-range and distributed remote automatic monitoring is realized by combining the requirements of field arrangement.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a track alignment monitoring system based on wireless sensing according to the present invention.
Fig. 2 is a schematic diagram illustrating an installation of a sensing mechanism in a board of an embodiment of a track alignment monitoring system based on wireless sensing according to the present invention, wherein fig. 2a is a front view of a track board as seen from a side surface thereof, fig. 2b is a side view of the track board as seen from a line direction, and fig. 2c is a top view thereof.
Fig. 3 is a schematic view illustrating an installation of an inter-plate sensing mechanism in an embodiment of a track alignment monitoring system based on wireless sensing according to the present invention.
Fig. 4 is a schematic structural view of a first fixing base of the embodiment shown in fig. 3.
Fig. 5 is a schematic structural view of a second fixing base of the embodiment shown in fig. 3.
Fig. 6 is a schematic view of the link structure of the embodiment shown in fig. 3.
The system comprises a 100-sensing mechanism, a 110-in-board sensing mechanism, a 111-first wireless inclinometer, a 112-mounting bracket, a 120-inter-board sensing mechanism, a 121-second wireless inclinometer, a 1221-first fixed base plate, a 1222-rotating shaft, a 1223-limiting device, a 122-first fixed base, a 123-second fixed base, a 1231-second fixed base plate, a 1232-limiting vertical plate, a 1233-long hole, a 1234-arc surface, a 124-connecting rod, a 1241-connecting rod main body, a 1242-rotating sleeve, a 1243-sliding rod, a 1244-inclinometer fixing plate, a 200-gateway and a 300-processing computer.
Detailed Description
The track alignment monitoring system and method based on wireless sensing according to the present invention will be further described with reference to fig. 1-6.
As shown in fig. 1, the track alignment monitoring system based on wireless sensing of the present invention includes a sensing mechanism 100, a gateway 200, and a processing computer 300, where the sensing mechanism 100 includes a wireless inclinometer disposed on a ballastless track, the wireless inclinometer is configured to measure an angle change caused by track deformation and wirelessly transmit the angle change to the gateway 200 at a certain time interval, the gateway 200 collects data of a plurality of wireless inclinometers and connects the data to the processing computer 300, and the processing computer 300 analyzes and processes the data and further calculates a structural deformation value of the ballastless track, further outputs track alignment, and finally issues and displays monitoring information.
When the track structure is a ballast track or a continuous ballastless track, the sensing mechanism 100 is only composed of the in-board sensing mechanism 110; when the track structure is a unit-type ballastless track, the sensing mechanism 100 is composed of an in-board sensing mechanism 110 and an inter-board sensing mechanism 120. Fig. 1 is a schematic structural diagram of a track alignment monitoring system when a track structure is a unit-type ballastless track, and a sensing mechanism 100 includes two types of sensing mechanisms, namely a sensing mechanism 110 in a plate and a sensing mechanism 120 between plates.
As shown in fig. 2, which is a schematic view illustrating the installation of the in-board sensing mechanism 110 when the in-board sensing mechanism is applied to the continuous ballastless track, the in-board sensing mechanism 110 includes a first wireless inclinometer 111 and a mounting bracket 112, the first wireless inclinometer 111 is fixed on the mounting bracket 112, and the mounting bracket 112 is fastened on the track board. In the present invention, in-board sensing mechanism 110 is used to monitor the level and elevation changes of the track board. The first wireless inclinometer 111 and the mounting bracket 112 can be fastened on a track slab through connecting bolts, when the track slab changes horizontally or elevationally, the first wireless inclinometer 111 fastened on the track slab simultaneously tilts horizontally and longitudinally to generate angle change, the first wireless inclinometer 111 measures the angle change value and transmits the angle change value to the gateway 200 in a wireless mode, and the gateway 200 is connected with the processing computer 300 for further calculation and processing.
In-board sensing mechanism 110 is not limited to being mounted on a track board, but may be mounted on a sleeper or other device capable of responding to changes in track alignment.
For ballast tracks, in-slab sensing mechanism 110 may be mounted on a sleeper.
The number of the in-board sensing mechanisms 110 is different according to different track structures, and for the unit track structure, 1 group of in-board sensing mechanisms 110 are arranged on each track board; for a ballast track or a continuous track structure, the sensing mechanisms 110 in the slab can be arranged at intervals, and the intervals are set according to structural deformation characteristics and linear output requirements.
The first wireless inclinometer 111 can be fastened to the mounting bracket 112 by bolts, and the mounting bracket 112 can be fastened to the track plate by means of embedded bars or expansion bolts. Of course, the way of fixing the first wireless inclinometer 111 on the track plate is not limited to the bolt connection way, and the first wireless inclinometer 111 can be fixed by gluing or other ways.
As shown in fig. 3, which is a schematic view illustrating an installation of an inter-plate sensing mechanism 120 when the inter-plate sensing mechanism 120 is applied to a unit-type ballastless track, the inter-plate sensing mechanism 120 includes a second wireless inclinometer 121, a first fixed base 122, a second fixed base 123 and a connecting rod 124, the first fixed base 122 and the second fixed base 123 are respectively installed on track plates on two sides of a seam, one end of the connecting rod 124 is connected to a rotating shaft of the first fixed base 122, and the other end of the connecting rod is connected to a circular rod slot of the second fixed base 123; the second wireless inclinometer 121 is secured to the link 124. In the present invention, the inter-plate sensing mechanism 120 is used to monitor the relative elevation changes of the two track plates.
In the present invention, the first fixed base 122 and the second fixed base 123 are respectively installed on the track plate 1 and the track plate 2 at both sides of the seam, one end of the connecting rod 124 is connected with the rotating shaft of the first fixed base 122 through a rotating sleeve, and the other end is connected with the long hole of the second fixed base 123 through a sliding rod in a sliding manner. The second wireless inclinometer 121 is fastened on the connecting rod 124 in a bolt connection mode, when the elevation of the two track plates is relatively changed, the first fixed base 122 and the second fixed base 123 which are fixed on the two track plates simultaneously generate elevation change, the connecting rod 124 inclines in angle, the second wireless inclinometer 121 measures the angle change value and transmits the angle change value to the gateway 200 in a wireless mode, and the gateway 200 is connected with the processing computer 300 and further performs calculation and processing according to the length of the connecting rod 124 and the angle data.
As shown in fig. 4, the first fixing base 122 includes a first fixing base plate 1221 and a rotating shaft 1222 vertically disposed on the first fixing base plate 1221, one end of the rotating shaft 1222 is fixedly connected to the first fixing base plate 1221, and the other end is provided with a position limiting device 1223. In the present invention, the rotating shaft 1222 may be inserted into the first fixing base plate 1221 and fixed, for example, screwed, and the stopper 1223 is used to prevent the connecting rod 124 from being detached from the rotating shaft 1222.
As shown in fig. 5, the second fixed base 123 includes a second fixed bottom plate 1231 and a vertical limiting plate 1232 vertically disposed on the second fixed bottom plate 1231, the vertical limiting plate 1232 is provided with a long hole 1233, and an arc surface 1234 is disposed between the long hole 1233 and the outer surface of the vertical limiting plate 1232. The arc 1234 serves to provide a space for the sliding rod of the connecting rod 124 to move on the vertical limiting plate 1232.
As shown in fig. 6, the connecting rod 124 includes a rectangular connecting rod main body 1241, and a rotating sleeve 1242 is disposed at one end of the connecting rod main body 1241 and is configured to be sleeved on a rotating shaft 1222 on the first fixing base plate 1221; the other end of the connecting rod main body 1241 is connected with a sliding rod 1243, and one end of the sliding rod 1243, which is far away from the connecting rod main body 1241, is provided with a limiting circular truncated cone for preventing the sliding rod 1243 from being separated from the long hole 1233 on the limiting vertical plate 1232 during working; an inclinometer fixing plate 1244 is provided on the upper surface of the link main body 1241 for setting an inclinometer.
In the present invention, the rotating sleeve 1242 of the connecting rod 124 is in clearance fit connection with the rotating shaft 1222 of the first fixing base 122, and the connecting rod 124 can rotate around the rotating shaft 1222; the diameter of the connecting rod sliding rod is in clearance fit connection with the width of the middle opening of the limiting vertical plate of the fixed base 2, and the sliding rod can freely move in the long hole in the transverse direction and the longitudinal direction; the installation distance between the first fixed base 122 and the second fixed base 123 is matched with the length of the connecting rod 124; the length and the sliding diameter of the connecting rod 124 are matched with the opening width, the mounting clearance and the elevation measurement range of the long hole 1233; the second wireless inclinometer 121 is fastened to the inclinometer fixing plate 1244 of the connecting rod 124 by bolts, and the first fixing base 122 and the second fixing base 123 are fastened to the track plate by means of embedded bars or expansion bolts. The second wireless inclinometer 121 is fixed to the inclinometer fixing plate 1244 of the connecting rod 124 by means of not only a bolt connection but also an adhesive or other means.
In the invention, the first wireless inclinometer 111 and the second wireless inclinometer 121 can be of the same type, can be double-axis wireless inclinometers, can measure the transverse and longitudinal angle values at the same time, has higher resolution, and has the technical characteristics of low power consumption, miniaturization, autonomous power supply and high response speed. Meanwhile, by combining the internet of things technology, the dual-axis wireless inclinometer establishes a wireless local area network through the gateway 200, and performs communication pairing on the multiple dual-axis wireless inclinometers, so that stable collection of local data is realized, and distributed measurement in a long-distance range is realized.
The invention provides a track alignment monitoring method based on wireless sensing, which can be applied to ballast tracks and continuous or unit ballastless tracks, and specifically comprises the following steps:
step 1, calculating the variation of the horizontal displacement and the high-low displacement obtained by the sensing mechanism 110 in the board.
The step 1 comprises the following steps:
step 101, detecting horizontal and height relative angle variation of a track structure in real time by a sensing mechanism 110 in a plate;
102, when the relative angle variation exceeds a management threshold, sending alarm information in real time;
103, reflecting the height deformation of the rail by the X-axis angle detected by the inclinometer of the in-board sensing mechanism 110, and calculating by adopting the following formula to obtain the height displacement change value of the rail:
Sx＝Lx·tanθx
in the formula, LxFor the spacing of the sensing means in adjacent plates, thetaxThe angular variation of the X axis of the sensing mechanism in the plate is taken as the angular variation of the X axis of the sensing mechanism in the plate;
104, reflecting the horizontal deformation of the track by the Y-axis angle of the inclinometer of the in-board sensing mechanism 110, and calculating by adopting the following formula to obtain a track horizontal displacement change value:
Sy＝Ly*tanθy
in the formula, LyIs the width of the track slab, thetayIs the angle variation of the Y axis of the sensing mechanism in the plate.
And 2, calculating the high and low displacement variation quantity obtained by the inter-plate sensing mechanism 120.
The step 2 specifically comprises:
step 201, detecting the relative angle variation between adjacent track slabs in real time by the inter-slab sensing mechanism 120;
step 202, when the relative angle variation exceeds a management threshold, sending alarm information in real time;
step 203, reflecting the high and low deformation between the track slabs by the X-axis angle of the inter-slab sensing mechanism 120 inclinometer, and calculating by adopting the following formula to obtain the high and low displacement change value between the track slabs:
Sj＝Lj*tan|θj|
in the formula, LjIs the length of the sensing means between the plates, thetajThe angular variation of the X axis of the sensing mechanism between the plates.
And 3, further calculating the chord measuring value of the track height and the track structure deformation value of the track level according to the results obtained in the steps 1 and 2.
The step 3 specifically includes:
step 301, calculating a horizontal displacement value of the track according to the formula in step 104 to obtain Sy；
Step 302, calculating the track height chord value according to the following formula:
Si＝S(i-1)x+Six+Sij
in the formula, i is a track plate number.
And 4, outputting the track line shape along the mileage in the monitoring range according to the track structure deformation data.
When the track structure is a unit ballastless track, the deformation calculation of the track structure is carried out according to the step 1, the step 2 and the step 3; when the track structure is a ballast track or a continuous ballastless track, the deformation calculation of the track structure is only carried out according to the monitoring data of the sensing mechanism in the slab, namely, the required calculation result can be obtained only by carrying out the step 1 and the step 3.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (12)
1. The utility model provides a linear monitoring system of track based on wireless sensing, including sensing mechanism (100), gateway (200) and processing computer (300), characterized in that, sensing mechanism (100) are including setting up the wireless inclinometer on the track, and wireless inclinometer is used for measuring the angle change that the track warp caused, and transmit to gateway (200) with wireless mode according to certain time interval, gateway (200) assemble the data of a plurality of wireless inclinometers and are connected to processing computer (300), processing computer (300) carry out analysis processes and calculate the track deformation numerical value to data, further output the track is linear, finally carry out the issue and the show of monitoring information.
2. The track alignment monitoring system based on wireless sensing of claim 1, wherein when the track structure is a ballast track or a continuous ballastless track, the sensing mechanism (100) only comprises an in-board sensing mechanism (110); when the track structure is a unit type ballastless track, the sensing mechanism (100) comprises a sensing mechanism (110) in a plate and a sensing mechanism (120) between the plates.
3. The track alignment monitoring system based on wireless sensing of claim 2, wherein the in-board sensing mechanism (110) comprises a first wireless inclinometer (111) and a mounting bracket (112), the first wireless inclinometer (111) being fixed on the mounting bracket (112), the mounting bracket (112) being fastened to a sleeper or a track plate.
4. The track alignment monitoring system based on wireless sensing of claim 2, wherein the inter-plate sensing mechanism (120) comprises a second wireless inclinometer (121), a first fixed base (122), a second fixed base (123) and a connecting rod (124), the first fixed base (122) and the second fixed base (123) are respectively installed on the track plates at two sides of the inter-plate joint, one end of the connecting rod (124) is connected with a rotating shaft (1222) of the first fixed base (122), and the other end is connected with a limit vertical plate (1232) on the second fixed base (123); the second wireless inclinometer (121) is fastened to the link (124).
5. The track alignment monitoring system based on wireless sensing of claim 4, wherein the first fixing base (122) comprises a first fixing base plate (1221) and a rotating shaft (1222) vertically arranged on the first fixing base plate (1221), one end of the rotating shaft (1222) is fixedly connected with the first fixing base plate (1221), and the other end is provided with a limiting device (1223).
6. The track alignment monitoring system based on wireless sensing of claim 4, wherein the second fixing base (123) comprises a second fixing bottom plate (1231) and a limiting vertical plate (1232) vertically arranged on the second fixing bottom plate (1231), and the limiting vertical plate (1232) is provided with a long hole (1233).
7. The track alignment monitoring system based on wireless sensing according to claim 4, wherein the connecting rod (124) comprises a connecting rod main body (1241), a rotating sleeve (1242) is arranged at one end of the connecting rod main body (1241), a sliding rod (1243) is connected to the other end of the connecting rod main body, and an inclinometer fixing plate (1244) is arranged on the upper surface of the connecting rod main body (1241).
8. A track alignment monitoring method based on wireless sensing is characterized by comprising the following steps:
step 1, calculating the horizontal and high-low displacement variation of a sensing mechanism (110) in a board;
step 2, calculating the variation of high and low displacement of the sensing mechanism (120) between the plates;
step 3, further calculating the chord measuring value of the track height and the track structure deformation value of the track level according to the results obtained in the step 1 and the step 2;
and 4, outputting the track line shape along the mileage in the monitoring range according to the track structure deformation data.
9. The method for monitoring the alignment of the track based on the wireless sensing as claimed in claim 8, wherein the step 1 comprises:
step 101, detecting horizontal and height relative angle variation of a track structure in real time by a sensing mechanism (110) in a plate;
102, when the relative angle variation exceeds a management threshold, sending alarm information in real time;
103, reflecting the height deformation of the track by the X-axis angle of the inclinometer of the sensing mechanism (110) in the plate, and calculating by adopting the following formula to obtain the height displacement change value of the track:
Sx＝Lx·tanθx
in the formula, LxIs the distance, theta, of the sensing means (110) in adjacent platesxIs the X-axis angular variation of the in-board sensing mechanism (110);
104, reflecting the horizontal deformation of the track by the Y-axis angle of the inclinometer of the sensing mechanism (110) in the plate, and calculating by adopting the following formula to obtain a track horizontal displacement change value:
Sy＝Ly·tanθy
in the formula, LyIs the width of the track slab, thetayIs the amount of change in the Y-axis angle of the sensing mechanism (110) in the board.
10. The method for monitoring the alignment of the track based on the wireless sensing according to claim 8, wherein the step 2 specifically comprises:
step 201, detecting the relative angle variation of the height between the track slabs in real time by an inter-slab sensing mechanism (120);
step 202, when the relative angle variation exceeds a management threshold, sending alarm information in real time;
step 203, reflecting the high and low deformation between the track plates by the X-axis angle of the inclinometer of the inter-plate sensing mechanism (120), and calculating by adopting the following formula to obtain the high and low displacement change value between the track plates:
Sj＝Lj·tan|θj|
in the formula, LjIs the length of the sensing mechanism (120) between the plates, thetajIs the X-axis angular variation of the sensing mechanism (120) between the plates.
11. The method for monitoring the alignment of the track based on the wireless sensing according to claim 9, wherein the step 3 specifically comprises:
step 301, calculating a horizontal displacement value of the track according to the formula in step 104 to obtain Sy；
Step 302, calculating the track height chord value according to the following formula:
Si＝S(i-1)x+Six+Sij
in the formula, i is a track plate number.
12. The track alignment monitoring method based on wireless sensing of any one of claims 8 to 11, wherein when the track structure is a ballast track or a unit ballastless track, the track deformation calculation is performed according to the steps 1, 2 and 3; and when the track structure is a continuous ballastless track, calculating the track deformation according to the step 1 and the step 3.
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| CN202111628893.0A CN114228779B (en) | 2021-12-28 | 2021-12-28 | Track alignment monitoring system and method based on wireless sensing |
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