Monitoring device based on Beidou satellite positioning

Abstract

The invention relates to the field of track monitoring, in particular to a monitoring device based on Beidou satellite positioning, which comprises a track and a walking support advancing along the track, a monitoring host is fixedly arranged in the center of the upper end of the walking support, a Beidou positioning antenna is connected to the upper end of the monitoring host, and fixing frames are symmetrically arranged on two sides of the bottom of the walking support. Movable frames are rotatably connected to the two ends of the bottom of the walking support through torsional spring shafts, walking wheels are rotatably installed in the fixed frame and the movable frames, a detection notch is formed in the fixed frame in a penetrating mode, a track gauge monitoring assembly is arranged in the detection notch, installation cavities are formed in the two sides of the upper end of the walking support, and surface monitoring assemblies are arranged in the installation cavities. The distance between the rails is monitored through the rail gauge monitoring assembly, the abrasion condition of the surfaces of the rails is monitored through the surface monitoring assembly, and therefore the real-time monitoring process of the whole road section of the rails is achieved.

Description

Technical Field

[0001] The present invention relates to the field of orbit monitoring technology, and in particular to a monitoring device based on Beidou satellite positioning. Background Art

[0002] Track monitoring is an important part of ensuring the safe operation of rail transit. It involves continuous observation and evaluation of track geometry, structural status, and surrounding environment. The main purpose of track monitoring is to promptly detect abnormalities or damage to the track and its related facilities to ensure the safety and stability of train operation. Through monitoring, real-time status information of the track can be obtained to provide a scientific basis for track maintenance and management. The current track monitoring process is often carried out by inspectors holding handheld testing instruments step by step along the track. This is not only time-consuming and labor-intensive, but also has low monitoring efficiency. At the same time, the inspection items are single and the track gauge deformation and wear fatigue of the track cannot be detected at the same time. Summary of the invention

[0003] The purpose of the present invention is to provide a monitoring device based on Beidou satellite positioning, aiming to solve the above technical problems.

[0004] The purpose of the present invention can be achieved through the following technical solutions: A monitoring device based on Beidou satellite positioning comprises a track and a traveling support moving along the track, a monitoring host is fixedly arranged at the center of the upper end of the traveling support, a Beidou positioning antenna is connected to the upper end of the monitoring host, fixed frames are symmetrically arranged on both sides of the bottom of the traveling support, both ends of the bottom of the traveling support are rotatably connected to movable frames through torsion spring shafts, traveling wheels are arranged and rotatably installed in the fixed frame and the movable frame, the traveling wheels on both sides roll and stick to the outer walls of both sides of the track respectively, a traveling motor is fixedly arranged on one side of the fixed frame, the traveling motor is connected to one group of traveling wheels through a belt, a detection slot is penetrated on the fixed frame, a track gauge monitoring component is arranged in the detection slot, installation chambers are arranged on both sides of the upper end of the traveling support, and a surface monitoring component is arranged inside the installation chamber.

[0005] The track gauge monitoring assembly includes a fixed platform, which is fixedly arranged at the bottom center of the walking bracket, and sliding cavities are arranged on both sides of the fixed platform. A sliding rod is arranged inside the sliding cavity for sliding through, and a sensing block is fixedly arranged at one end of the sliding rod. The other end of the sliding rod slides through the fixed platform and is rotatably installed with a detection wheel, and the detection wheel passes through the detection slot and rolls against the inner wall of the track. A baffle is arranged on the outside of the sliding rod, and a reset spring is arranged between the baffle and the sliding cavity. A displacement sensor is fixedly arranged on one side of the sliding cavity, and the displacement sensor is arranged opposite to the sensing block.

[0006] As a further solution of the present invention: a first signal transceiver is arranged on the upper end of the fixed platform, the displacement sensor is connected to the input end of the first signal transceiver through a data line, and the output end of the first signal transceiver is communicatively connected to the monitoring host through a first communication line.

[0007] As a further solution of the present invention: the surface monitoring component includes a mounting bracket, the top of the mounting bracket is fixedly connected to the mounting chamber, a laser emitter and a photoresistor board are respectively provided at both ends of the mounting bracket, the laser emitter is tilted, the laser emitted by the laser emitter is reflected by the track surface and vertically directed toward the photoresistor board, the photoresistor board is electrically connected to a photoelectric sensor, and a scanning camera is fixedly provided at the bottom center of the mounting bracket.

[0008] As a further solution of the present invention: a second signal transceiver is arranged on the upper end of the mounting bracket, the laser emitter, the photoelectric sensor and the scanning camera are all electrically connected to the second signal transceiver, and the second signal transceiver is communicatively connected to the monitoring host via a second communication line.

[0009] As a further solution of the present invention: scrapers are arranged on both sides of the interior of the installation chamber, the scrapers are abutted against the surface of the track, a pressure rod is fixedly arranged on the top of the scraper, a pressure plate is arranged on the outer wall of the pressure rod, mounting sleeves are fixedly arranged on the inner walls of both sides of the installation chamber, the top of the pressure rod slides through the mounting sleeve, and a pressure spring is arranged between the bottom of the mounting sleeve and the top of the pressure plate.

[0010] As a further solution of the present invention: contact switches are arranged at both ends of the top of the installation chamber, the contact switches are respectively facing the corresponding pressure rods, and the contact switches are electrically connected to the travel motor.

[0011] Beneficial effects of the present invention: (1) By setting up a traveling bracket, when preparing to monitor the track, the fixed bracket is installed between the tracks at both ends, and the traveling wheels in the fixed bracket are against the inner wall of the track. At the same time, the movable bracket rotates toward the fixed bracket under the elastic force of the torsion spring shaft until the traveling wheels in the movable bracket are against the outer wall of the track, so that the two sides of the track can be stably clamped. The traveling motor is used to drive one set of traveling wheels to start rotating, and the track is used to limit the travel wheels to guide the travel wheels, so as to drive the traveling bracket to start moving stably along the track. During this process, the gauge monitoring component is used to monitor the spacing between the tracks, and the surface monitoring component is used to monitor the wear of the track surface, so as to realize the real-time monitoring process of the entire track section.

[0012] (2) By setting up a track gauge monitoring component, during the running monitoring process, the reset spring will always apply an outward squeezing force to the baffle, the sliding rod will extend outward and make the detection wheel rest against the inner wall of the track. When the detection wheel rolls through the deformed section of the track, the sliding rod will undergo axial displacement along with the detection wheel. At the same time, the displacement sensor will monitor the distance change between the sensing block and the sensing block in real time. When the displacement distance of the sensing block exceeds the threshold, it indicates that the deformation degree of the track in this section exceeds the qualified standard. The displacement change of the sensing block is used to intuitively feedback the deformation size of the track, which is conducive to controlling the track gauge between the two sides of the track within the standard range.

[0013] (3) By setting up a surface monitoring component, during the running monitoring process, the laser emitted by the laser transmitter is reflected by the track surface, and the reflected light will be vertically projected toward the photoresistor board, and the light source signal on the photoresistor board is received by the photoelectric sensor. When the track surface is worn, the track height difference before and after the wear is set to ∆X, and the distance difference between the reflection points of the laser on the track surface before and after the wear is set to ∆Y. The front and rear light source positions received by the photoelectric sensor can accurately obtain ∆Y, so that ∆X can be accurately calculated from ∆Y according to the incident angle of the light, thereby realizing the accurate detection process of the wear and fatigue of the track surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a structural schematic diagram of the walking support in the present invention.

[0017] Figure 3 It is a structural schematic diagram of the track gauge monitoring component in the present invention.

[0018] Figure 4 yes Figure 3 A schematic diagram of the enlarged structure at point A in the middle.

[0019] Figure 5 It is a schematic diagram of the structure of the surface monitoring component in the present invention.

[0020] Figure 6 It is a schematic diagram of the optical path of the laser transmitter in the present invention.

[0021] Figure 7 It is a connection diagram of the monitoring host in the present invention.

[0022] In the figure: 1. track; 2. walking bracket; 21. fixed frame; 211. detection notch; 212. installation chamber; 22. movable frame; 23. torsion spring shaft; 24. walking motor; 25. walking wheel; 3. monitoring host; 301. first communication line; 302. second communication line; 4. Beidou positioning antenna; 5. track gauge monitoring component; 51. fixed platform; 511. sliding cavity; 512. displacement sensor; 513. reset spring; 514. Data line; 52, sliding rod; 521, baffle; 522, sensor block; 53, detection wheel; 54, first signal transceiver; 6, surface monitoring component; 61, mounting bracket; 62, laser transmitter; 63, photoresistor board; 64, scanning camera; 65, photoelectric sensor; 66, second signal transceiver; 67, scraper; 671, pressure rod; 672, pressure plate; 673, pressure spring; 674, mounting sleeve; 68, contact switch. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1 , Figure 2 and Figure 3 As shown, the present invention is a monitoring device based on Beidou satellite positioning, comprising a track 1 and a traveling support 2 moving along the track 1, a monitoring host 3 is fixedly arranged at the center of the upper end of the traveling support 2, a Beidou positioning antenna 4 is connected to the upper end of the monitoring host 3, fixed frames 21 are symmetrically arranged on both sides of the bottom of the traveling support 2, and movable frames 22 are rotatably connected to the two ends of the bottom of the traveling support 2 through a torsion spring shaft 23, and traveling wheels 25 are arranged and rotatably installed in the fixed frame 21 and the movable frame 22, and the traveling wheels 25 on both sides roll and stick to the outer walls of the two sides of the track 1, a traveling motor 24 is fixedly arranged on one side of the fixed frame 21, and the traveling motor 24 is connected to one group of traveling wheels 25 through a belt, a detection slot 211 is penetrated on the fixed frame 21, and a track gauge monitoring component 5 is arranged in the detection slot 211, and an installation chamber 212 is arranged on both sides of the upper end of the traveling support 2, and a surface monitoring component 6 is arranged inside the installation chamber 212.

[0025] Specifically, by setting up the walking bracket 2, when preparing to monitor the track 1, the fixed frame 21 is installed between the tracks 1 at both ends, and the walking wheels 25 in the fixed frame 21 are made to abut against the inner wall of the track 1, and at the same time, the movable frame 22 rotates toward the fixed frame 21 under the elastic force of the torsion spring shaft 23, until the walking wheels 25 in the movable frame 22 abut against the outer wall of the track 1, so that the two sides of the track 1 can be stably clamped, and one group of the walking wheels 25 are driven by the walking motor 24 to start rotating, and the track 1 cooperates with the limiting guide of the walking wheels 25, thereby driving the walking bracket 2 to start moving stably along the track 1. In this process, the gauge monitoring component 5 is used to monitor the spacing between the tracks 1, and the surface monitoring component 6 is used to monitor the wear of the surface of the track 1, thereby realizing the real-time monitoring process of the entire section of the track 1.

[0026] Specifically, Figure 3 and Figure 4 As shown, the track gauge monitoring component 5 includes a fixed platform 51, which is fixedly arranged at the bottom center of the walking bracket 2, and sliding cavities 511 are arranged on both sides of the fixed platform 51. A sliding rod 52 is slidably arranged inside the sliding cavity 511, and a sensing block 522 is fixedly arranged at one end of the sliding rod 52. The other end of the sliding rod 52 slides through the fixed platform 51 and is rotatably installed with a detection wheel 53. The detection wheel 53 passes through the detection slot 211 and rolls against the inner wall of the track 1. A baffle 521 is arranged on the outside of the sliding rod 52, and a reset spring 513 is arranged between the baffle 521 and the sliding cavity 511. A displacement sensor 512 is fixedly arranged on one side of the sliding cavity 511, and the displacement sensor 512 is arranged opposite to the sensing block 522.

[0027] Specifically, by setting up the track gauge monitoring component 5, during the travel monitoring process, the reset spring 513 will always apply an outward squeezing force to the baffle 521, the sliding rod 52 will extend outward and make the detection wheel 53 rest against the inner wall of the track 1, and when the detection wheel 53 rolls through the deformed section of the track 1, the sliding rod 52 will undergo axial displacement along with the detection wheel 53, and at the same time, the displacement sensor 512 will monitor the distance change between the sensing block 522 in real time. When the displacement distance of the sensing block 522 exceeds the threshold, it indicates that the deformation degree of the track 1 in this section exceeds the qualified standard. The displacement change of the sensing block 522 is used to intuitively feedback the deformation size of the track 1, which is beneficial to control the track gauge between the tracks 1 on both sides within the standard range.

[0028] like Figure 4 and Figure 7 As shown, a first signal transceiver 54 is disposed on the upper end of the fixing platform 51 , the displacement sensor 512 is connected to the input end of the first signal transceiver 54 via a data line 514 , and the output end of the first signal transceiver 54 is communicatively connected to the monitoring host 3 via a first communication line 301 .

[0029] Specifically, the data signal sent by the displacement sensor 512 is received by the first signal transceiver 54, and at the same time, the first signal transceiver 54 transmits the detection data to the monitoring host 3. Combined with the Beidou satellite positioning technology, the geographical location information of the deformed section of the track 1 and the deformation detection data are recorded and sent to the background monitoring personnel to realize remote sharing of monitoring data.

[0030] Among them, the monitoring host 3 is internally provided with a Beidou GNSS positioning monitoring system, which has a Beidou high-precision positioning module, a wireless communication module, a charging control circuit, a battery and a Beidou positioning antenna 4. The Beidou GNSS positioning monitoring system is applied to bridges, dams, etc. in the prior art and will not be repeated here.

[0031] like Figure 5 As shown, the surface monitoring component 6 includes a mounting bracket 61, the top of the mounting bracket 61 is fixedly connected to the mounting chamber 212, and a laser emitter 62 and a photoresistor board 63 are respectively provided at both ends of the mounting bracket 61. The laser emitter 62 is tilted, and the laser emitted by the laser emitter 62 is reflected by the surface of the track 1 and vertically emitted to the photoresistor board 63. The photoresistor board 63 is electrically connected to a photoelectric sensor 65, and a scanning camera 64 is fixedly provided at the bottom center of the mounting bracket 61.

[0032] Specifically, Figure 6 As shown, by setting the surface monitoring component 6, during the walking monitoring process, the laser emitted by the laser transmitter 62 is reflected by the surface of the track 1, and the reflected light will be vertically emitted to the photoresistor plate 63, and the light source signal on the photoresistor plate 63 is received by the photoelectric sensor 65. When the surface of the track 1 is worn, the height difference of the track 1 before and after the wear is set to ∆X, and the distance difference of the reflection point of the laser on the surface of the track 1 before and after the wear is set to ∆Y. The front and rear light source positions received by the photoelectric sensor 65 can accurately obtain ∆Y, so that ∆X can be accurately calculated from ∆Y according to the incident angle of the light, thereby realizing the accurate detection process of the wear fatigue condition of the track 1 surface.

[0033] like Figure 7 As shown, a second signal transceiver 66 is provided at the upper end of the mounting bracket 61 , and the laser emitter 62 , the photoelectric sensor 65 and the scanning camera 64 are all electrically connected to the second signal transceiver 66 , and the second signal transceiver 66 is communicatively connected to the monitoring host 3 via the second communication line 302 .

[0034] Specifically, similar to the first signal transceiver 54, the data signal sent by the photoelectric sensor 65 is received by the second signal transceiver 66, and at the same time, the second signal transceiver 66 transmits the detection data to the monitoring host 3. Combined with the Beidou satellite positioning technology, the geographical location information of the wear section on the surface of the track 1 and the wear detection data are recorded and sent to the background monitoring personnel.

[0035] like Figure 5 As shown, scrapers 67 are provided on both sides of the interior of the installation chamber 212, and the scrapers 67 are abutted against the surface of the track 1. A pressure rod 671 is fixedly provided on the top of the scraper 67, and a pressure plate 672 is provided on the outer wall of the pressure rod 671. Installation sleeves 674 are fixedly provided on the inner walls of both sides of the installation chamber 212, and the top of the pressure rod 671 slides through the installation sleeve 674, and a pressure spring 673 is provided between the bottom of the installation sleeve 674 and the top of the pressure plate 672.

[0036] Furthermore, contact switches 68 are provided at both ends of the top of the installation chamber 212 . The contact switches 68 are respectively opposite to the corresponding pressure rods 671 . The contact switches 68 are electrically connected to the travel motor 24 .

[0037] Specifically, by setting the scraper 67, when monitoring the surface of the track 1, the pressure spring 673 will always apply downward pressure to the pressure rod 671, so that the scraper 67 is always in contact with the surface of the track 1 during the monitoring process, and the dust and dirt on the surface of the track 1 are scraped and cleaned during the travel process, which is beneficial to improve the accuracy of detecting the wear of the track 1 surface. At the same time, when the scraper 67 passes through a raised obstacle on the track 1, the pressure rod 671 will be lifted up with the scraper 67 until the collision triggers the contact switch 68, and the travel motor 24 is controlled to shut down urgently to prevent the detection instrument from colliding with the raised obstacle and causing damage.

[0038] The working principle of the present invention is as follows: Figure 1-Figure 7As shown, when preparing to monitor the track 1, the fixed frame 21 is installed between the tracks 1 at both ends, and the running wheels 25 in the fixed frame 21 are made to abut against the inner wall of the track 1. At the same time, the movable frame 22 rotates toward the fixed frame 21 under the elastic force of the torsion spring shaft 23 until the running wheels 25 in the movable frame 22 abut against the outer wall of the track 1, so that the two sides of the track 1 can be stably clamped, and the travel motor 24 is used to drive one group of the running wheels 25 to start rotating, and the track 1 cooperates with the limit guide of the running wheels 25, thereby driving the walking frame 2 to start moving stably along the track 1. During the travel monitoring process, the return spring 513 will always apply an outward squeezing force to the baffle 521, and the sliding rod 52 will extend outward and make the detection wheel 53 rest against the inner wall of the track 1. When the detection wheel 53 rolls through the deformed section of the track 1, the sliding rod 52 will undergo axial displacement along with the detection wheel 53. At the same time, the displacement sensor 512 will monitor the distance change between the sensing block 522 in real time. When the displacement distance of the sensing block 522 exceeds the threshold, it means that the deformation degree of the track 1 in this section exceeds the qualified standard. The displacement change of the sensing block 522 is used to intuitively feedback the deformation size of the track 1, which is beneficial to control the track gauge between the tracks 1 on both sides within the standard range. During the walking monitoring process, after the laser emitted by the laser transmitter 62 is reflected by the surface of the track 1, the reflected light will be vertically directed to the photoresistor plate 63, and the light source signal on the photoresistor plate 63 is received by the photoelectric sensor 65. When the surface of the track 1 is worn, the height difference of the track 1 before and after the wear is set to ∆X, and the distance difference of the reflection point of the laser on the surface of the track 1 before and after the wear is set to ∆Y. The front and rear light source positions received by the photoelectric sensor 65 can accurately obtain ∆Y, so that ∆X can be accurately calculated from ∆Y according to the incident angle of the light, thereby realizing the accurate detection process of the wear condition of the track 1 surface.

[0039] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A monitoring device based on Beidou satellite positioning, comprising a track (1) and a traveling support (2) moving along the track (1), a monitoring host (3) being fixedly arranged at the center of the upper end of the traveling support (2), and a Beidou positioning antenna (4) being connected to the upper end of the monitoring host (3), characterized in that: A fixed frame (21) is symmetrically arranged on both sides of the bottom of the walking frame (2), and a movable frame (22) is rotatably connected to the two ends of the bottom of the walking frame (2) via a torsion spring shaft (23). Travel wheels (25) are arranged and rotatably installed in the fixed frame (21) and the movable frame (22), and the travel wheels (25) on both sides roll against the outer walls of the track (1) on both sides. A travel motor (24) is fixedly arranged on one side of the fixed frame (21), and the travel motor (24) is connected to one group of travel wheels (25) through a belt. A detection slot (211) is penetrated on the fixed frame (21), and a track gauge monitoring component (5) is arranged in the detection slot (211). Installation chambers (212) are arranged on both sides of the upper end of the walking frame (2), and a surface monitoring component (6) is arranged inside the installation chamber (212); The track gauge monitoring assembly (5) comprises a fixed platform (51), the fixed platform (51) being fixedly arranged at the center of the bottom of the traveling support (2), the fixed platform (51) being provided with sliding cavities (511) on both sides thereof, a sliding rod (52) being slidably arranged inside the sliding cavity (511), a sensing block (522) being fixedly arranged at one end of the sliding rod (52), the other end of the sliding rod (52) slidingly passing through the fixed platform (51) and being rotatably mounted with a detection wheel (53), the detection wheel (53) passing through a detection slot (211) and rollingly abutting against an inner wall of the track (1), a baffle (521) being arranged on the outer side of the sliding rod (52), a return spring (513) being arranged between the baffle (521) and the sliding cavity (511), a displacement sensor (512) being fixedly arranged at one side of the sliding cavity (511), the displacement sensor (512) being arranged directly opposite to the sensing block (522).

2. The monitoring device based on Beidou satellite positioning according to claim 1, characterized in that: A first signal transceiver (54) is provided at the upper end of the fixing platform (51); the displacement sensor (512) is connected to an input end of the first signal transceiver (54) via a data line (514); and an output end of the first signal transceiver (54) is communicatively connected to a monitoring host (3) via a first communication line (301).

3. The monitoring device based on Beidou satellite positioning according to claim 1, characterized in that: The surface monitoring component (6) comprises a mounting bracket (61), the top end of the mounting bracket (61) being fixedly connected to the mounting chamber (212), a laser emitter (62) and a photoresistor plate (63) being respectively arranged at two ends of the mounting bracket (61), the laser emitter (62) being arranged obliquely, the laser emitted by the laser emitter (62) being reflected by the surface of the track (1) and being vertically emitted to the photoresistor plate (63), the photoresistor plate (63) being electrically connected to a photoelectric sensor (65), and a scanning camera (64) being fixedly arranged at the center of the bottom of the mounting bracket (61).

4. The monitoring device based on Beidou satellite positioning according to claim 3 is characterized in that: A second signal transceiver (66) is disposed at the upper end of the mounting bracket (61); the laser emitter (62), the photoelectric sensor (65) and the scanning camera (64) are all electrically connected to the second signal transceiver (66); and the second signal transceiver (66) is communicatively connected to the monitoring host (3) via a second communication line (302).

5. The monitoring device based on Beidou satellite positioning according to claim 3 is characterized in that: Scrapers (67) are arranged on both sides of the installation chamber (212), the scrapers (67) are in contact with the surface of the track (1), a pressure rod (671) is fixedly arranged on the top of the scraper (67), a pressure plate (672) is arranged on the outer wall of the pressure rod (671), and a mounting sleeve (674) is fixedly arranged on the inner walls of both sides of the installation chamber (212), the top of the pressure rod (671) slides through the mounting sleeve (674), and a pressure spring (673) is arranged between the bottom of the mounting sleeve (674) and the top of the pressure plate (672).

6. A monitoring device based on Beidou satellite positioning according to claim 5, characterized in that: Contact switches (68) are provided at both ends of the top of the installation chamber (212), the contact switches (68) are respectively opposite to corresponding pressure rods (671), and the contact switches (68) are electrically connected to the travel motor (24).

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