Train auxiliary precise parking system based on wireless distance measurement

Abstract

The invention discloses a train auxiliary precise parking system based on wireless distance measurement, and relates to the technical field of train parking, the train auxiliary precise parking system comprises a platform stand column and a box body located on the front side of the platform stand column, a limiting mechanism is arranged on the outer surface of a first connecting plate, and sawteeth are evenly distributed on the inner wall of a second notch; a notch formed in the second connecting plate is formed in the front side of the sawteeth, a gear is arranged between the sawteeth and the notch, a power adjusting mechanism is arranged on the outer side of the waveguide tube, and an antenna is connected to the top of the surface of the left end of the box body. By arranging a series of structures, the real-time position of the train can be accurately measured, accurate stopping of the train can be controlled in cooperation with a control system of the train, meanwhile, the radio-frequency signal output power can be automatically reduced when the train approaches, receiving saturation is avoided, and the accuracy of the train is improved. And meanwhile, the antenna can be controlled to change the azimuth angle along with the movement of the train.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of train parking, in particular to a train auxiliary precise parking system based on wireless ranging. BACKGROUND

[0002] Train is a long-distance travel tool commonly used by people, in order to enable passengers to orderly board the train, relevant personnel will set up the corresponding waiting area at the platform, therefore, whether the train can be accurately parked in the waiting area becomes particularly critical.

[0003] At present, wireless ranging technology is used to monitor the position of the train on the platform in real time, so as to control the parking of the train with the control system. The most commonly used and most accurate wireless ranging technology is UWB, i.e. ultra-wideband technology.

[0004] However, the azimuth angle of the signal transmitting antenna of the current UWB ranging base station is fixed after being installed on the platform, which results in that the UWB tag on the train will be misaligned with the antenna position with the change of the train driving position, so that the signal emitted by the antenna will be scattered multiple times before contacting the tag, and the signal strength received by the tag is also reduced. In addition, the current UWB base station does not have real-time adjustment of the output power of the radio frequency signal, so that the train still outputs a strong power signal after approaching, so that the UWB signal reception is saturated. Therefore, the present application proposes a train auxiliary precise parking system based on wireless ranging. SUMMARY

[0005] The purpose of the present application is to provide a train auxiliary precise parking system based on wireless ranging to solve the problems raised in the background.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a train auxiliary precise parking system based on wireless ranging, comprising a platform column and a box body located in front of the platform column, the upper and lower ends of the platform column are respectively connected with a first connecting plate and a second connecting plate, the outer surface of the first connecting plate is provided with a limiting mechanism, the outer surface of the second connecting plate is provided with a second notch in an arc shape, the inner wall of the second notch is uniformly distributed with sawteeth, the front side of the sawteeth is provided with a notch opened in the second connecting plate, and a gear is arranged between the sawteeth and the notch, the lower surface of the box body is connected with a base, the bottom of the base is connected with a lower connecting rod through a motor, and the bottom end of the lower connecting rod is rotationally connected with the gear, the inside of the box body is installed with a mainboard, and the outer surface of the mainboard is connected with a baseband chip, one side of the mainboard is connected with a modulator, the outer surface of the modulator is connected with a PCB microstrip line, and the other end of the PCB microstrip line is connected with a waveguide tube, the outer side of the waveguide tube is provided with a power adjustment mechanism, and the top of the left end surface of the box body is connected with an antenna.

[0007] Preferably, the limiting mechanism comprises a first notch, a connecting block and an upper connecting rod, the first notch is arc-shaped and arranged on the outer surface of the first connecting plate, the connecting block is inserted into the first notch, the upper surface of the connecting block is connected with the upper connecting rod, and the other end of the upper connecting rod is connected with the box body.

[0008] Preferably, the first connecting plate and the second connecting plate each comprise a left half and a right half, and the left and right halves of the first connecting plate and the second connecting plate are fixedly connected with the platform column.

[0009] Preferably, the upper connecting rod and the lower connecting rod are connected with the box body and the base flange respectively.

[0010] Preferably, the power adjusting mechanism comprises a rotating block and a waveguide channel, the rotating block is rotatably connected to the inner top end of the box body, one end of the rotating block is connected with a motor, a plurality of waveguide channels are arranged at equal angles in the rotating block, the apertures of the plurality of waveguide channels are the same, and the plurality of waveguide channels extend through the rotating block.

[0011] Preferably, the movement trajectories of the plurality of waveguide channels pass through the center point of the waveguide tube, and the upper surface of the waveguide tube is fixedly connected with the inner top wall of the box body.

[0012] Preferably, the outer surface of the rotating block is connected with a connecting rope, the bottom end of the connecting rope is connected with a sliding block, the outer surface of the sliding block is attached with a connecting pipe, the top end of the connecting pipe is connected with the lower surface of the box body, and an infrared range finder is installed at the inner bottom end of the connecting pipe.

[0013] Preferably, the inner bottom end of the box body is connected with a blocking rod.

[0014] Preferably, the right end surface top of the box body is connected with a shell, the inner portion of the shell is provided with a rotating roller, the rotating roller rotates coaxially with the rotating block, and the outer surface of the shell is connected with a transparent window.

[0015] Preferably, one end of the gear is meshingly connected with the sawtooth, and the other end of the gear is inserted into the recess.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 1. The train auxiliary precise parking system based on wireless ranging can move on the second connecting plate by controlling the rotation of the gear and meshing between the gear and the sawtooth, drive the box body to move, ensure that the antenna can be aligned with the train to emit a radio frequency signal in real time when the train station position changes, and ensure that the signal strength received by the tag is ensured.

[0018] 2、The train auxiliary precise parking system based on wireless ranging, through the power adjusting mechanism, the power adjusting mechanism includes the rotating block and the waveguide channel, since the signal transmission will cause energy attenuation with the reduction of the channel cross-sectional area, therefore, in the process of the train driving close to the shell, by controlling the rotating block to rotate, the waveguide channel with different aperture is aligned with the waveguide pipe, and then the channel cross-sectional area is changed, so that the output power of the radio frequency signal can be automatically reduced when the train is close, thereby avoiding the saturation of the UWB tag signal reception.

[0019] 3、The train auxiliary precise parking system based on wireless ranging, through the connecting pipe, the connecting rope, the sliding block and the infrared range finder, the connecting rope will be wound when the rotating block rotates, thereby driving the sliding block to move, and the sliding block will slide a fixed distance when the rotating block rotates a fixed angle, therefore, the sliding distance is measured by the infrared range finder, so that the rotating angle of the rotating block is known, and whether the waveguide channel is accurately aligned with the waveguide pipe after rotation is monitored.

[0020] 4、The train auxiliary precise parking system based on wireless ranging, through the above series of structures, the real-time position of the train can be accurately measured, and then the control system of the train is matched to control the accurate parking, and the output power of the radio frequency signal can be automatically reduced when the train approaches, so as to avoid the saturation of the reception, and the azimuth angle of the antenna can be controlled to change with the movement of the train. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a front view structure schematic diagram of the application;

[0022] Figure 2 It is a box body internal structure schematic diagram of the application;

[0023] Figure 3 It is a rotating block side view structure schematic diagram of the application;

[0024] Figure 4 It is a first connecting plate and a second connecting plate top view structure schematic diagram of the application;

[0025] Figure 5 It is a second connecting plate internal structure schematic diagram of the application;

[0026] Figure 6 It is a connecting pipe internal structure schematic diagram of the application.

[0027] In the figure: 1, platform column; 2, first connecting plate; 3, second connecting plate; 4, first notch; 5, connecting block; 6, upper connecting rod; 7, box body; 8, second notch; 9, sawtooth; 10, notch; 11, gear; 12, lower connecting rod; 13, base; 14, mainboard; 15, baseband chip; 16, modulator; 17, PCB microstrip line; 18, waveguide; 19, rotating block; 20, waveguide channel; 21, antenna; 22, connecting pipe; 23, infrared range finder; 24, sliding block; 25, connecting rope; 26, blocking rod; 27, shell; 28, rotating roller; 29, transparent window. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0029] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0030] As Figures 1 to 6As shown, the train auxiliary precision parking system based on wireless ranging of the embodiment comprises a platform column 1 and a box body 7 located in front of the platform column 1, the upper and lower ends of the platform column 1 are respectively connected with a first connecting plate 2 and a second connecting plate 3, the outer surface of the first connecting plate 2 is provided with a limiting mechanism, the first connecting plate 2 and the second connecting plate 3 are respectively located on the upper and lower sides of the box body 7, the limiting mechanism is used for limiting the rotation center of the box body 7 to be the same as the center of the platform column 1 when the box body 7 rotates, the outer surface of the second connecting plate 3 is provided with a second notch 8 in an arc shape, the inner wall of the second notch 8 is uniformly provided with a sawtooth 9, the front side of the sawtooth 9 is provided with a notch 10 opened in the second connecting plate 3, and a gear 11 is arranged between the sawtooth 9 and the notch 10, the gear 11 moves in the second notch 8 by meshing with the sawtooth 9 when the gear 11 rotates, the lower surface of the box body 7 is connected with a base 13, the bottom of the base 13 is connected with a lower connecting rod 12 through a motor, and the bottom end of the lower connecting rod 12 is connected with the gear 11, the output shaft of the motor in the base 13 drives the gear 11 to rotate synchronously when the lower connecting rod 12 rotates, so that the gear 11 drives the box body 7 to move in cooperation with the sawtooth 9, a mainboard 14 is installed in the box body 7, and a baseband chip 15 is connected to the outer surface of the mainboard 14, the mainboard 14 is fixedly installed in the box body 7 through screws, one side of the mainboard 14 is connected with a modulator 16, the outer surface of the modulator 16 is connected with a PCB microstrip line 17, and the other end of the PCB microstrip line 17 is connected with a waveguide tube 18, the mainboard 14 provides a stable circuit for the baseband chip 15, the baseband chip 15 generates a low-frequency UWB pulse, the modulator 16 loads it into a radio frequency carrier wave, and then outputs it through the PCB microstrip line 17, the end of the PCB microstrip line 17 gradually changes to a fin line and is inserted into the waveguide tube 18, the waveguide tube 18 reflects through the metal wall and restricts the electromagnetic energy in the tube to propagate directionally, a power adjusting mechanism is arranged on the outer side of the waveguide tube 18, the power adjusting mechanism can change the UWB signal transmission power according to the real-time distance of the train when ranging, prevent receiving saturation, reduce system power consumption, and the left end surface top of the box body 7 is connected with an antenna 21.

[0031] Specifically, the limiting mechanism comprises a first notch 4, a connecting block 5 and an upper connecting rod 6, the first notch 4 is arc-shaped and opened on the outer surface of the first connecting plate 2, the connecting block 5 is inserted into the inside of the first notch 4, the upper surface of the connecting block 5 is connected with the upper connecting rod 6, and the other end of the upper connecting rod 6 is connected with the box body 7, the connecting block 5 is clamped in the inside of the first notch 4 and cannot be separated from the first notch 4 from the upper and lower sides, so that the moving path of the box body 7 is fixed through the limiting of the first notch 4 when the box body 7 moves.

[0032] Further, the first connecting plate 2 and the second connecting plate 3 each comprise a left half and a right half, and the left and right halves of the first connecting plate 2 and the second connecting plate 3 are fixedly connected with the platform column 1. By arranging the left half and the right half, the first connecting plate 2 and the second connecting plate 3 are separated, and the first connecting plate 2 and the second connecting plate 3 are conveniently connected with the platform column 1.

[0033] Further, the upper connecting rod 6 and the lower connecting rod 12 are respectively flange-connected with the box 7 and the base 13, the upper connecting rod 6 is directly flange-connected with the box 7, and the lower connecting rod 12 is flange-connected with an output shaft of an internal motor of the base 13, so that the box 7 is conveniently disassembled.

[0034] Further, the power adjusting mechanism comprises a rotating block 19 and a plurality of waveguide channels 20, the rotating block 19 is rotationally connected at an internal top end of the box 7, one end of the rotating block 19 is connected with a motor, a plurality of waveguide channels 20 are arranged at equal angles in the rotating block 19, apertures of the plurality of waveguide channels 20 are the same, the plurality of waveguide channels 20 extend through the rotating block 19, the rotating block 19 is made of metal, the inner wall of the waveguide channel 20 needs to be strictly polished, the rotating block 19 is controlled to rotate by the motor to a fixed angle, the waveguide channel 20 with the different apertures is aligned with the waveguide tube 18, the cross-sectional area of the signal channel is changed, the smaller the cross-sectional area is, the more the signal attenuation is, so that the effective control of the UWB signal output power is realized.

[0035] Further, the movement trajectories of the plurality of waveguide channels 20 pass through the center point of the waveguide tube 18, and the upper surface of the waveguide tube 18 is fixedly connected with the inner wall of the top end of the box 7, so that when the rotating block 19 rotates, each waveguide channel 20 can be aligned with the waveguide tube 18.

[0036] Further, the outer surface of the rotating block 19 is wound with a connecting rope 25, the bottom end of the connecting rope 25 is connected with a sliding block 24, the outer surface of the sliding block 24 is attached with a connecting pipe 22, the top end of the connecting pipe 22 is connected with the lower surface of the box 7, and an infrared range finder 23 is installed at the internal bottom end of the connecting pipe 22. When the rotating block 19 rotates, the connecting rope 25 is wound, so that the sliding block 24 moves upward in the connecting pipe 22. At this time, the infrared range finder 23 measures the distance between the sliding block 24, so as to know the rotating angle of the rotating block 19. Because the rotating block 19 is replaced with the waveguide channel 20 connected with the waveguide tube 18 after rotating to a fixed angle, the working state of the power adjusting mechanism is remotely known through the measurement and monitoring of the structure, the monitoring data is remotely transmitted through a wireless transmission module, and the working state of the power adjusting mechanism is remotely known. After the motor controls the rotating block 19 to rotate 360°, the rotating block 19 reversely rotates and repeatedly rotates.

[0037] Further, the internal bottom end of the box 7 is connected with a stop rod 26, the stop rod 26 is located at the front side of the internal bottom end of the box 7 relative to the main plate 14. By arranging the stop rod 26, the connecting rope 25 can avoid contacting the main plate 14.

[0038] Further, the right end surface top of the box body 7 is connected with a shell 27, the inside of the shell 27 is provided with a rotating roller 28, and the rotating roller 28 rotates coaxially with the rotating block 19. The outer surface of the shell 27 is connected with a transparent window 29. The motor for controlling the rotation of the rotating block 19 is connected with a double shaft, and the other driving shaft controls the synchronous rotation of the rotating roller 28 and the rotating block 19. Different gear position marks are marked on the outer surface of the rotating roller 28. When the rotating block 19 rotates to select different waveguide channels 20, the surface of the rotating roller 28 also synchronously displays different gear position marks, which is convenient for the staff to check through the transparent window 29.

[0039] Still further, one end of the gear 11 is meshed and connected with the sawtooth 9, and the other end of the gear 11 is inserted into the inside of the notch 10. The provision of the notch 10 provides sufficient space for the rotation of the gear 11.

[0040] The use method of the embodiment is as follows: first, the UWB tag is installed on the train. When the train drives into the platform, the baseband chip 15 emits a radio frequency signal and transmits the signal through the antenna 21 after processing. The signal is reflected after contacting the UWB tag. The antenna 21 receives the transmitted signal. At this time, the system records the time from signal transmission to receiving the reflected signal. The time data is transmitted to the remote and train control terminal through the wireless transmission module. The real-time position of the train is known through communication calculation. In the process of signal emission by the baseband chip 15, as the train gradually approaches the platform, the rotating block 19 is controlled to rotate at this time, so that the waveguide channels 20 with different apertures are aligned with the waveguide tube 18, so as to change the signal channel cross-sectional area, and then change the radio frequency signal output power, so as to avoid the output power being too large after the train approaches, causing the receiving to be saturated, and reduce the system power consumption. At the same time, as the train position changes, the built-in control module drives the motor to start, and then controls the rotation of the gear 11, so as to drive the box body 7 to move through the meshing of the gear 11 and the sawtooth 9, so that the antenna 21 is always aligned with the position of the train UWB tag, avoiding the signal contacting the UWB tag after multiple scattering due to the error of the signal emission position.

[0041] Finally, it should be noted that: the above is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A train-assisted precise parking system based on wireless ranging, comprising a platform column (1) and a box (7) located in front of the platform column (1), characterized in that: The upper and lower outer surfaces of the platform column (1) are respectively connected to a first connecting plate (2) and a second connecting plate (3), the outer surface of the first connecting plate (2) is provided with a limiting mechanism, the outer surface of the second connecting plate (3) is provided with a second arc-shaped notch (8), the inner wall of the second notch (8) is evenly distributed with saw teeth (9), the front side of the saw teeth (9) is provided with a notch (10) opened inside the second connecting plate (3), and a gear (11) is provided between the saw teeth (9) and the notch (10), the lower surface of the box body (7) is connected to a base (13), the bottom of the base (13) is provided with a plurality of teeth. The housing (7) is connected to a lower connecting rod (12) through a motor, and the bottom end of the lower connecting rod (12) is rotatably connected to a gear (11). A mainboard (14) is installed inside the housing (7), and a baseband chip (15) is connected to the outer surface of the mainboard (14). A modulator (16) is connected to one side of the mainboard (14), and a PCB microstrip line (17) is connected to the outer surface of the modulator (16). The other end of the PCB microstrip line (17) is connected to a waveguide tube (18). A power adjustment mechanism is provided on the outer side of the waveguide tube (18). An antenna (21) is connected to the top of the left end surface of the housing (7).

2. The train-assisted precise parking system based on wireless ranging according to claim 1 is characterized in that: The limiting mechanism comprises a first notch (4), a connecting block (5) and an upper connecting rod (6); the first notch (4) is arc-shaped and is provided on the outer surface of the first connecting plate (2); the connecting block (5) is inserted into the interior of the first notch (4); the upper surface of the connecting block (5) is connected to the upper connecting rod (6), and the other end of the upper connecting rod (6) is connected to the box body (7).

3. The train-assisted precise parking system based on wireless ranging according to claim 1 is characterized in that: The first connecting plate (2) and the second connecting plate (3) both comprise a left half and a right half, and the left and right halves of the first connecting plate (2) and the second connecting plate (3) are both fixedly connected to the platform column (1).

4. The train-assisted precise parking system based on wireless ranging according to claim 2 is characterized in that: The upper connecting rod (6) and the lower connecting rod (12) are flange-connected to the box body (7) and the base (13) respectively.

5. The train-assisted precise parking system based on wireless ranging according to claim 1 is characterized in that: The power adjustment mechanism comprises a rotating block (19) and a waveguide channel (20); the rotating block (19) is rotatably connected to the inner top of the box (7); one end of the rotating block (19) is connected to a motor; a plurality of waveguide channels (20) are arranged at equal angles inside the rotating block (19); the apertures of the plurality of waveguide channels (20) are the same; and the plurality of waveguide channels (20) extend through the rotating block (19).

6. The train-assisted precise parking system based on wireless ranging according to claim 5 is characterized in that: The movement trajectories of the plurality of waveguide channels (20) all pass through the center point of the waveguide tube (18), and the upper surface of the waveguide tube (18) is fixedly connected to the inner wall of the top end of the box body (7).

7. The train-assisted precise parking system based on wireless ranging according to claim 5, characterized in that: The outer surface of the rotating block (19) is wound with a connecting rope (25), the bottom end of the connecting rope (25) is connected to a slider (24), the outer surface of the slider (24) is fitted with a connecting tube (22), and the top end of the connecting tube (22) is connected to the lower surface of the box (7), and the inner bottom end of the connecting tube (22) is installed with an infrared rangefinder (23).

8. The train-assisted precise parking system based on wireless ranging according to claim 1 is characterized in that: The inner bottom end of the box body (7) is connected with a blocking rod (26).

9. The train-assisted precise parking system based on wireless ranging according to claim 1, characterized in that: The top of the right end surface of the box body (7) is connected to a shell (27), a roller (28) is provided inside the shell (27), and the roller (28) rotates coaxially with the rotating block (19), and the outer surface of the shell (27) is connected to a transparent window (29).

10. The train-assisted precise parking system based on wireless ranging according to claim 1, characterized in that: One end of the gear (11) is meshed with the saw teeth (9), and the other end of the gear (11) is inserted into the interior of the notch (10).

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