CN213301457U

CN213301457U - Concrete bridge amplitude monitoring and early warning device based on UWB ranging

Info

Publication number: CN213301457U
Application number: CN202022606274.9U
Authority: CN
Inventors: 刘一鸣; 刘恒; 杨柳
Original assignee: Southwest Jiaotong University
Current assignee: Southwest Jiaotong University
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-05-28
Anticipated expiration: 2030-11-12

Abstract

The utility model discloses a concrete bridge amplitude monitoring and early warning device based on UWB distance measurement, which comprises a UWB transmitter mobile power supply and a UWB distance measurement label arranged on the UWB transmitter mobile power supply, the UWB distance measuring tag is electrically connected with a UWB transmitter mobile power supply, and also comprises two fixed rods arranged at the bottom of the concrete bridge, a fixed plate is arranged between the two fixed rods, two ends of the fixed plate are respectively sleeved on the two fixed rods, two connecting rods are also arranged on the fixed plate, the connecting rods are detachably connected with the fixed plate, a bearing plate with an arc-shaped structure is arranged between the connecting rods and is connected with the connecting rods in a sliding way, and the loading board can move along the axial direction of connecting rod, and UWB transmitter portable power source is located the arc wall of loading board, still is equipped with in the arc wall of loading board and adds and holds the subassembly, adds and holds the subassembly and can fix UWB transmitter portable power source on the loading board.

Description

Concrete bridge amplitude monitoring and early warning device based on UWB ranging

Technical Field

The utility model relates to an engineering survey technical field, concretely relates to concrete bridge amplitude monitoring early warning device based on UWB range finding.

Background

With the continuous improvement of economic development and people's trip demand, the quantity of bridge is also more and more. The bridge is often the throat key way of traffic engineering, whether the bridge can be operated safely determines whether a traffic line or even regional traffic can be unobstructed, and the life and property safety of the country and people is directly influenced, so that the bridge has great importance and practical significance in real-time monitoring. In recent years, bridge catastrophic accidents caused by insufficient design, construction, supervision and maintenance technical means or due to coupling of various factors occur, and the bridges put into operation collapse without any detected symptoms. At present, the research on real-time bridge monitoring in academic circles and engineering circles is getting hot, and the research is a serious problem to be solved urgently in the field of engineering measurement. The Ministry of construction in 2014 issued the technical Specification for monitoring building and bridge structures (GB 50982-. According to the current bridge monitoring specification in China, the bridge amplitude is one of key parameters for carrying out safety monitoring on the bridge. In order to find out the dangerous condition and the performance deterioration of the bridge as early as possible, data basis and winning time are provided for the management and maintenance decision of the bridge, and the amplitude of the bridge needs to be monitored in real time.

The method for monitoring the bridge amplitude in real time at home and abroad mainly comprises the following steps: acceleration sensor, static level (including fiber grating type and vibrating wire type), total station, laser range finder, etc. The acceleration sensor is not sensitive to the low-frequency vibration amplitude monitoring effect identification; the static force level has hysteresis to the high-frequency vibration amplitude due to the communicating pipe principle; total stations and laser rangefinders are too costly and are not suitable for real-time monitoring. Therefore, some existing bridges adopt the UWB electromagnetic wave distance measurement principle to detect the amplitude of the bridge, namely, UWB transmitters are fixedly installed at the bottom of the bridge, UWB base stations are deployed at fixed observation points with wide visual fields, the flight time of pulse signals between two modules can be calculated based on timestamp information between the two modules, the distance between the UWB base stations and the two modules is determined, the UWB base stations have the characteristics of being beneficial to real-time monitoring such as high-frequency sampling, original sampling data are processed through a series of digital signal processing algorithms, the amplitude measurement precision of the UWB base stations can effectively meet the real-time amplitude monitoring requirements of the bridge, but the traditional mode is not convenient for the UWB transmitters to be fixedly installed at the bottom of the bridge, and the UWB transmitters are easy to fall off in the actual use process.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome not enough among the prior art, aim at provides a concrete bridge amplitude monitoring early warning device based on UWB range finding, can conveniently avoid UWB transmitter fixed mounting to take place to drop in the in-process that uses in the bottom that detects the bridge, guarantees effectively to monitor the amplitude of bridge.

The utility model discloses a following technical scheme realizes:

a concrete bridge amplitude monitoring and early warning device based on UWB ranging comprises a UWB transmitter mobile power supply and a UWB ranging tag arranged on the UWB transmitter mobile power supply, the UWB ranging tag is electrically connected with a UWB transmitter mobile power supply, and also comprises two fixed rods arranged at the bottom of the concrete bridge, a fixed plate is arranged between the two fixed rods, two ends of the fixed plate are respectively sleeved on the two fixed rods, the fixed plate is also provided with two connecting rods which are detachably connected with the fixed plate, a bearing plate with an arc-shaped structure is arranged between the connecting rods and is connected with the connecting rods in a sliding way, and the loading board can move along the axial direction of connecting rod, UWB transmitter portable power source is located the arc wall of loading board, still is equipped with in the arc wall of loading board and adds and holds the subassembly, adds and holds the subassembly and can fix UWB transmitter portable power source on the loading board.

Aiming at the problems that the UWB transmitter can not be stably fixed under a concrete bridge in the prior art, and the UWB transmitter is easy to fall off from the bottom of the concrete bridge in the using process, so that the amplitude of the bridge can not be effectively monitored in real time, the technical scheme is that two holes for placing fixing rods are arranged at the bottom of the concrete bridge, the two fixing rods are respectively arranged in the holes which are arranged in advance on the concrete bridge during installation, then the two ends of the fixing plate connected with the connecting rods are respectively arranged on the two fixing rods, and finally the bearing plate fixed with the UWB transmitter mobile power supply is arranged between the two connecting rods, thereby realizing the stable fixation between the bearing plate and the connecting rods, therefore, the UWB transmitter mobile power supply is stably and fixedly arranged below the concrete bridge and matched with a UWB base station arranged at a far distance, so that the amplitude of the bridge can be monitored in real time; through sliding connection's mode between the arc loading board that sets up among this technical scheme and the connecting rod, can be according to the installation demand of reality, adjust UWB transmitter portable power source's height, satisfy different installation demands, fix through the centre gripping subassembly between UWB transmitter portable power source and the loading board simultaneously, make things convenient for loading and unloading between UWB transmitter portable power source and the loading board, be convenient for follow the UWB transmitter portable power source and trade.

Furthermore, all be equipped with first fixation nut on the dead lever to first fixation nut is located the bottom of fixed plate.

In order to guarantee that the fixed plate can be stably fixed on the fixed rod, the event has set up first fixation nut, utilizes first fixation nut can stably fix the fixed plate in the below of concrete bridge.

Further, the top of connecting rod all is equipped with the stopper, fixed plate central point department of putting still is equipped with the quad slit that matches with the stopper, the top of fixed plate still is equipped with two first bar holes, and two first bar holes are located the both sides of quad slit respectively to all communicate with the quad slit, the width in first bar hole is less than the width of stopper.

Can stably fix on the fixed plate in order to guarantee the connecting rod that sets up, be convenient for loading and unloading between connecting rod and the fixed plate simultaneously, the event sets up quad slit and first bar hole on the fixed plate, the quad slit that sets up matches with the stopper on the connecting rod, during specific installation, pass the quad slit on the fixed plate with the stopper on the connecting rod, because the width in first bar hole is greater than the diameter of connecting rod, and be less than the width of stopper, make the connecting rod can remove at first bar hole direction, and under the effect of stopper, can restrict the connecting rod on the fixed plate, avoid the whole downward movement of connecting rod, and simultaneously, under the mating reaction of first fixation nut and fixed plate, can fix the stopper between fixed plate and concrete bridge, avoid the connecting rod to remove on the fixed plate.

Further, the bottom of connecting rod still is equipped with the breach, and the axial direction of breach along the connecting rod distributes, all be equipped with the horizontal pole in the breach, the horizontal pole is connected with the loading board, all be equipped with second fixation nut on the horizontal pole to second fixation nut can fix the horizontal pole in the breach.

In actual installation, in order to adjust UWB transmitter portable power source's height for the convenience, satisfy different installation demands, the event is the breach of the bar structure that sets up on the connecting rod, during specific installation, put into the breach with the horizontal pole of loading board both sides, and because the horizontal pole can remove in the breach of connecting rod, the event can adjust the height of loading board, thereby realized the regulation to UWB transmitter portable power source height, and the second fixation nut who utilizes the setting can stably fix the second fixation nut on the connecting rod.

Furthermore, the clamping assembly comprises a transverse plate, two clamping plates and a horizontal rod, two ends of the transverse plate are detachably connected with the inner wall of the arc-shaped groove of the bearing plate, a second strip-shaped hole matched with the clamping plates is formed in the top of the transverse plate, the two clamping plates are located in the second strip-shaped hole and located on two sides of the mobile power supply of the UWB transmitter respectively, two ends of the horizontal rod penetrate through the two clamping plates respectively, third fixing nuts are arranged on the horizontal rod, and the third fixing nuts are located on the outer sides of the clamping plates; the second bar hole inner wall both sides of diaphragm all are equipped with the guide way, and the both sides of grip block all are equipped with the guide block that matches with the guide way to the guide block is located the guide way.

The centre gripping subassembly of setting is used for fixing UWB transmitter portable power source in the arc wall of loading board steadily, during specific installation, place UWB transmitter portable power source in the arc wall of loading board, then screw up two third fixation nut on the horizontal pole, under third fixation nut's effect, promote two grip blocks and draw close towards the centre, the grip block that utilizes the setting fixes UWB transmitter portable power source in the loading board arc wall, realized fixing to the grip block, and simultaneously, in order to avoid the grip block of setting to move by oneself upwards on the diaphragm, the event still has set up the guide way in the bar second bar of diaphragm is downthehole, the cooperation sets up the guide block of grip block both sides can restrict the grip block on the diaphragm, guarantee that it can only follow the horizontal direction and remove, can't move on vertical direction.

Furthermore, a plurality of gaskets are arranged on the clamping surfaces of the clamping plates.

In order to avoid scratching the UWB transmitter mobile power supply when the clamping plate clamps the UWB transmitter mobile power supply, a plurality of gaskets are arranged on the clamping surface of the clamping plate, the UWB transmitter mobile power supply can be protected to a certain extent by the aid of the arranged gaskets, and damage in the clamping process is avoided.

Furthermore, a plurality of elastic pieces are further arranged in the arc-shaped groove of the bearing plate, the elastic pieces are springs, and the elastic pieces are connected with the holding plate.

In order to facilitate installation of the UWB transmitter mobile power supply, the clamping plate can act on and place the UWB transmitter mobile power supply on the bearing plate in advance, so that the elastic part is arranged in the arc-shaped groove of the bearing plate, and after the UWB transmitter mobile power supply is placed in the arc-shaped groove of the bearing plate, the clamping plate can be pushed to fix the UWB transmitter mobile power supply on the bearing plate in advance under the action of elastic force generated by the elastic part.

Further, still be equipped with the recess that matches with UWB transmitter portable power source in the arc wall of loading board, UWB transmitter portable power source is located the recess.

Because the loading board that sets up is the arc structure, in order to guarantee that UWB transmitter portable power source can have great area of contact with the arc wall of loading board, so still set up the recess that matches with UWB transmitter portable power source in the arc wall of loading board for place UWB transmitter portable power source.

Furthermore, dovetail grooves are further formed in two sides of the inner wall of the arc-shaped groove of the bearing plate, and dovetail blocks matched with the dovetail grooves are arranged at two ends of the transverse plate.

In order to facilitate quick assembly and disassembly between the transverse plate and the bearing plate, dovetail grooves are further formed in the inner wall of the arc-shaped groove of the bearing plate, and the dovetail blocks at two ends of the transverse plate are connected with the dovetail grooves, so that connection between the transverse plate and the bearing plate is quickly achieved.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

1. the utility model relates to a concrete bridge amplitude monitoring and early warning device based on UWB range finding utilizes the loading board that sets up can stably fix in the below of concrete bridge, avoids UWB transmitter to take place to drop in the in-process that uses to can carry out real-time supervision to the concrete bridge amplitude, guaranteed the precision of monitoring time measuring;

2. the utility model relates to a concrete bridge amplitude monitoring early warning device based on UWB range finding utilizes the connecting rod convenience of setting to load and unload with the loading board, and the breach that sets up simultaneously can realize satisfying the user demand under the different operating modes to UWB transmitter portable power source height's regulation.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the loading plate and the clamping assembly of the present invention;

FIG. 3 is a schematic structural view of the carrier plate of the present invention;

fig. 4 is a schematic structural view of the fixing plate of the present invention;

fig. 5 is a schematic structural diagram of the connection of the present invention.

Reference numbers and corresponding part names in the drawings:

1-concrete bridge, 2-fixed rod, 3-fixed plate, 4-limited block, 5-first fixed nut, 6-connecting rod, 8-bearing plate, 9-notch, 11-second fixed nut, 12-third fixed nut, 13-horizontal rod, 14-clamping plate, 15-cross rod, 16-dovetail block, 17-gasket, 18-UWB ranging tag 18, 19-UWB transmitter mobile power supply, 20-elastic component, 21-cross plate, 22-groove, 23-square hole, 24-first strip-shaped hole, and 25-dovetail groove.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

Example 1

As shown in FIGS. 1 to 5, the utility model relates to a concrete bridge amplitude monitoring and early warning device based on UWB ranging, which comprises a UWB transmitter mobile power supply 19 and a UWB ranging tag 18 arranged on the UWB transmitter mobile power supply 19, wherein the UWB ranging tag is electrically connected with the UWB transmitter mobile power supply 19, the device also comprises two fixed rods 2 arranged at the bottom of the concrete bridge, a fixed plate 3 is arranged between the two fixed rods 2, two ends of the fixed plate 3 are respectively sleeved on the two fixed rods 2, two connecting rods 6 are also arranged on the fixed plate 3, the connecting rods 6 are detachably connected with the fixed plate 3, a bearing plate 8 with an arc structure is arranged between the connecting rods 6, the bearing plate 8 is connected with the connecting rods 6 in a sliding manner, the bearing plate 8 can move along the axial direction of the connecting rods 6, the UWB transmitter mobile power supply 19 is positioned in an arc-shaped groove of the bearing, and a clamping component is also arranged in the arc-shaped groove of the bearing plate 8 and can fix the UWB transmitter mobile power supply 19 on the bearing plate 8.

When utilizing this device to monitor the bridge amplitude, utilize a fixed UWB range finding basic station in ground, can be in the range of sight distance observation UWB label can, realize the range finding through the interaction between basic station and the label, its range finding principle is two-way time of flight method, utilize the module of UWB label and UWB range finding basic station, every module can generate an independent time stamp from the start promptly, the time of flight of pulse signal between two modules can be calculated to time stamp information based on between two modules, thereby confirm the distance between the two, and analyze out the bridge amplitude data between UWB basic station and the label.

Example 2

On the basis of embodiment 1, the two pieces 2 are provided with the first fixing nuts 5, and the first fixing nuts 5 are located at the bottom of the fixing plate 3.

Example 3

On embodiment 1's basis, the top of connecting rod 6 all is equipped with

stopper

4, 3 central point departments of fixed plate still are equipped with the quad slit 23 that matches with stopper 4, the top of fixed plate 3 still is equipped with two first bar holes 24, and two first bar holes 24 are located the both sides of quad slit 23 respectively to all communicate with quad slit 23, the width in first bar hole 24 is less than stopper 4's width.

Example 4

On the basis of embodiment 1, the bottom of connecting rod 6 still is equipped with breach 9, and breach 9 distributes along the axial direction of connecting rod 6, all be equipped with horizontal pole 15 in the breach 9, horizontal pole 15 is connected with loading board 8, all be equipped with second fixation nut 11 on the horizontal pole 15 to second fixation nut 11 can fix horizontal pole 15 in breach 9.

Example 5

On the basis of embodiment 1, add and hold the subassembly and include diaphragm 21, two add and hold board 14 and horizon bar 13, diaphragm 21's both ends and the arc wall inner wall detachable connection of loading board 8, the top of diaphragm 21 is equipped with and adds the second bar hole that holds board 14 and match, and two add and hold board 14 and all be located the second bar downthehole to two add and hold board 14 and be located the both sides of UWB transmitter portable power source 19 respectively, two add and hold board 14 are run through respectively to the both ends of horizon bar 13, all are equipped with third fixation nut 12 on the horizon bar 13, and third fixation nut 12 all is located and adds the outside that holds board 14.

Example 6

On the basis of the embodiment 5, a plurality of gaskets 17 are arranged on the clamping surfaces of the clamping plates 14.

Example 7

On the basis of embodiment 5, a plurality of elastic members 20 are further disposed in the arc-shaped groove of the bearing plate 8, and the elastic members 20 are connected with the clamping plate 14.

Example 8

On the basis of embodiment 1, a groove 22 matched with the UWB transmitter mobile power supply 19 is further arranged in the arc-shaped groove of the bearing plate 8, and the UWB transmitter mobile power supply 19 is located in the groove 22.

Example 9

On the basis of embodiment 5, dovetail grooves 25 are further formed in two sides of the inner wall of the arc-shaped groove of the bearing plate 8, and dovetail blocks 16 matched with the dovetail grooves 25 are arranged at two ends of the transverse plate 21.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A concrete bridge amplitude monitoring and early warning device based on UWB ranging comprises a UWB transmitter mobile power supply (19) and a UWB ranging tag (18) arranged on the UWB transmitter mobile power supply (19), wherein the UWB ranging tag is electrically connected with the UWB transmitter mobile power supply (19), the device is characterized by further comprising two fixed rods (2) arranged at the bottom of the concrete bridge, a fixed plate (3) is further arranged between the two fixed rods (2), two ends of the fixed plate (3) are respectively sleeved on the two fixed rods (2), two connecting rods (6) are further arranged on the fixed plate (3), the connecting rods (6) are detachably connected with the fixed plate (3), a bearing plate (8) of an arc-shaped structure is arranged between the connecting rods (6), the bearing plate (8) is connected with the connecting rods (6) in a sliding mode, and the bearing plate (8) can move along the axial direction of the connecting rods (6), UWB transmitter portable power source (19) are located the arc wall of loading board (8), still are equipped with in the arc wall of loading board (8) and add and hold the subassembly, add and hold the subassembly and can fix UWB transmitter portable power source (19) on loading board (8).

2. The UWB ranging-based concrete bridge amplitude monitoring and early warning device is characterized in that a first fixing nut (5) is arranged on each fixing rod (2), and the first fixing nut (5) is located at the bottom of each fixing plate (3).

3. The UWB ranging-based concrete bridge amplitude monitoring and early warning device is characterized in that a limiting block (4) is arranged at the top of each connecting rod (6), a square hole (23) matched with the limiting block (4) is further formed in the central position of each fixing plate (3), two first strip-shaped holes (24) are further formed in the top of each fixing plate (3), the two first strip-shaped holes (24) are respectively located on two sides of the square hole (23) and are communicated with the square holes (23), and the width of each first strip-shaped hole (24) is smaller than that of the limiting block (4).

4. The UWB ranging-based concrete bridge amplitude monitoring and early warning device is characterized in that a notch (9) is further formed in the bottom of the connecting rod (6), the notches (9) are distributed along the axial direction of the connecting rod (6), cross rods (15) are arranged in the notches (9), the cross rods (15) are connected with a bearing plate (8), second fixing nuts (11) are arranged on the cross rods (15), and the cross rods (15) can be fixed in the notches (9) through the second fixing nuts (11).

5. The UWB ranging-based concrete bridge amplitude monitoring and early warning device is characterized in that the clamping assembly comprises a transverse plate (21), two clamping plates (14) and a horizontal rod (13), the two ends of the transverse plate (21) are detachably connected with the inner wall of the arc-shaped groove of the bearing plate (8), a second strip-shaped hole matched with the clamping plates (14) is formed in the top of the transverse plate (21), the two clamping plates (14) are located in the second strip-shaped hole, the two clamping plates (14) are located on the two sides of a mobile power supply (19) of a UWB transmitter respectively, the two ends of the horizontal rod (13) penetrate through the two clamping plates (14) respectively, a third fixing nut (12) is arranged on the horizontal rod (13), and the third fixing nut (12) is located on the outer side of the clamping plates (14).

6. The UWB ranging-based concrete bridge amplitude monitoring and early warning device is characterized in that a plurality of gaskets (17) are arranged on the clamping surfaces of the clamping plates (14).

7. The UWB ranging-based concrete bridge amplitude monitoring and early warning device is characterized in that a plurality of elastic pieces (20) are further arranged in the arc-shaped grooves of the bearing plate (8), and the elastic pieces (20) are connected with the clamping plate (14).

8. The UWB ranging-based concrete bridge amplitude monitoring and early warning device is characterized in that a groove (22) matched with a UWB transmitter mobile power supply (19) is further formed in the arc-shaped groove of the bearing plate (8), and the UWB transmitter mobile power supply (19) is located in the groove (22).

9. The UWB ranging-based concrete bridge amplitude monitoring and early warning device is characterized in that dovetail grooves (25) are further formed in two sides of the inner wall of the arc-shaped groove of the bearing plate (8), and dovetail blocks (16) matched with the dovetail grooves (25) are arranged at two ends of the transverse plate (21).