Suspension bridge sling stress monitoring device based on RFID

Abstract

The suspension bridge sling stress monitoring device based on the RFID comprises a first shell and a second shell which are arranged outside a sling body in a sleeving mode, and the second shell can slide up and down along the sling body through a connecting rope; according to the device, displacement data of the sling can be obtained in real time through the displacement sensor in the first shell; real-time stress monitoring on the sling body is realized through a stress sensor in the second shell; due to the fact that the second shell can slide up and down along the sling body through the connecting rope, stress values of different positions of the sling can be monitored through the device; the displacement data and the stress value of the sling body are sent to the mobile terminal, and related technicians can monitor the sling of the suspension bridge in real time according to the data displayed by the mobile terminal; according to the suspension bridge sling stress monitoring device based on the RFID, stress values of different positions of the sling can be monitored in real time, the monitoring efficiency is improved, the personnel cost is reduced, and the device has positive significance in the field of suspension bridge sling stress monitoring.

Description

Technical Field

[0001] The present application belongs to the field of suspension bridge cable stress monitoring, and specifically relates to a suspension bridge cable stress monitoring device based on RFID. Background Art

[0002] Cables are an essential component of suspension bridges. They connect the main cables to the main beams and transfer the load borne by the main beams to the cables, thereby distributing the weight of the bridge deck and external loads. However, over the long-term use of suspension bridges, the performance of the cables will degrade due to factors such as environmental erosion and material aging. To ensure bridge safety, real-time stress monitoring of the cables is required to promptly identify potential risks. Cable stress monitoring data can also provide an important basis for maintenance decisions, predicting the service life and maintenance intervals of the cables, formulating reasonable maintenance plans, and reducing maintenance costs.

[0003] The existing technology of suspension bridge cable stress monitoring mostly relies on manual monitoring. The suspension bridge cables are monitored regularly by manual labor. This method is inefficient and may miss detections. It cannot guarantee real-time monitoring and timely processing of the cables, and has certain shortcomings. Summary of the Invention

[0004] In order to solve the problem of low efficiency of suspension bridge cable stress monitoring in the existing technology, a suspension bridge cable stress monitoring device based on RFID is proposed. The device can realize real-time monitoring of suspension bridge cables, improve the cable stress monitoring efficiency, and save labor costs.

[0005] An RFID-based suspension bridge cable stress monitoring device includes a cable body, a first housing, a driving device, a connecting rope, a second housing, and a mobile terminal;

[0006] The first shell is detachably mounted on the upper end of the sling body, the first shell is fixedly connected to the driving device, the driving device is flexibly connected to one end of the connecting rope, and the other end of the connecting rope is fixedly connected to the second shell, and the second shell is detachably mounted on the outside of the sling body; the driving device is used to control the extension or shortening of the connecting rope to change the length of the connecting rope, and the second shell is used to slide up and down along the sling body according to the length of the connecting rope;

[0007] The first housing is provided with a displacement sensor and a first RFID transceiver; the second housing is provided with a controller, a stress sensor and a second RFID transceiver;

[0008] The displacement sensor is used to obtain displacement data and send the displacement data to the first RFID transceiver; the first RFID transceiver is used to send the received displacement data to the mobile terminal and the controller;

[0009] The controller is used to control the driving device to extend the length of the connecting rope after receiving the displacement data, so that the second shell slides downward along the sling body; the stress sensor is used to obtain the stress data of the sling body and send the stress data to the second RFID transceiver, and the second RFID transceiver sends the received stress data to the mobile terminal; the mobile terminal is used to display the received displacement data and stress data.

[0010] Preferably, an alarm device is provided in the mobile terminal, and the alarm device determines whether the received stress data is less than a set threshold value, and if so, issues an alarm.

[0011] Beneficial effects

[0012] The present application discloses an RFID-based suspension bridge cable stress monitoring device, comprising a first shell and a second shell mounted on the outside of a cable body, wherein the second shell can slide up and down along the cable body through a connecting rope; the device can obtain the displacement data of the cable in real time through a displacement sensor in the first shell; and realize real-time stress monitoring of the cable body through a stress sensor inside the second shell; since the second shell can slide up and down along the cable body through a connecting rope, the device can also realize monitoring of stress values at different positions of the cable; the first RFID transceiver and the second RFID transceiver send the displacement data and stress value of the cable body to a mobile terminal, and relevant technical personnel can realize real-time monitoring of the suspension bridge cable according to the data displayed on the mobile terminal; the RFID-based suspension bridge cable stress monitoring device of the present application can realize real-time monitoring of stress values at different positions of the cable, improve monitoring efficiency, and reduce personnel costs, which has positive significance in the field of suspension bridge cable stress monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural diagram of a suspension bridge cable stress monitoring device based on RFID according to a specific embodiment of the present application;

[0014] Figure 2 A top view of the second housing of a specific embodiment of the present application;

[0015] Figure 3 This is a flow chart of a suspension bridge cable stress monitoring device based on RFID according to a specific embodiment of the present application. DETAILED DESCRIPTION

[0016] The following is a combination of the embodiments of the present invention Figure 1 To the attached Figure 3 , illustrate this implementation mode, and clearly and completely describe the technical solutions in the embodiments of this application:

[0017] An RFID-based suspension bridge cable stress monitoring device includes a cable body, a first housing 1, a driving device 3, a connecting rope 4, a second housing 2, and a mobile terminal;

[0018] The first shell 1 is detachably mounted on the upper end of the sling body. The first shell 1 is connected to the driving device 3. The driving device 3 is flexibly connected to one end of the connecting rope 4. The other end of the connecting rope 4 is fixedly connected to the second shell 2. The second shell 2 is detachably mounted on the outside of the sling body. The driving device 3 is used to control the extension or shortening of the connecting rope 4 to change the length of the connecting rope. The second shell 2 is used to slide up and down along the sling body according to the length of the connecting rope 4.

[0019] The first housing 1 is provided with a displacement sensor and a first RFID transceiver; the second housing 2 is provided with a controller, a stress sensor and a second RFID transceiver;

[0020] The displacement sensor is used to obtain displacement data and send the displacement data to the first RFID transceiver; the first RFID transceiver is used to send the received displacement data to the mobile terminal and the controller;

[0021] After receiving the displacement data, the controller is used to control the driving device to extend the length of the connecting rope, so that the second shell 2 slides downward along the sling body; the stress sensor is used to obtain the stress data of the sling body and send the stress data to the second RFID transceiver, and the second RFID transceiver sends the received stress data to the mobile terminal; the mobile terminal is used to display the received displacement data and stress data.

[0022] During specific operation, the relevant staff can put the first shell 1 on the upper end of the sling body and fix it, put the second shell 2 on the outside of the sling body, and connect the first shell 1 and the second shell 2 through the connecting rope 4; the displacement sensor in the first shell 1 obtains displacement data, and sends the first displacement data to the mobile terminal and the controller via the first RFID transceiver;

[0023] After receiving the displacement data, the controller controls the driving device to extend the length of the connecting rope, so that the second shell 2 slides downward along the sling body; when the second shell stops sliding, the stress sensor obtains the stress data of the sling body and sends the stress data to the second RFID transceiver, and the second RFID transceiver sends the received stress data to the mobile terminal; the mobile terminal displays the received displacement data and stress data. The setting of the connecting rope can realize the measurement of stress data at different positions of the sling, reducing the number of times the device is disassembled during stress monitoring.

[0024] Furthermore, an alarm device is provided in the mobile terminal, and the alarm device determines whether the received stress data is less than a set threshold value, and issues an alarm if so.

[0025] Specifically, the mobile terminal can be carried by relevant technical personnel. When the sling stress value is less than the set threshold, the alarm device will sound an alarm, reminding relevant technical personnel to check the sling stress value data in time, and judge and handle abnormal stress values.

[0026] Furthermore, the first shell 1 and the second shell 2 are annular shells, and the inner ring radius of the first shell 1 and the second shell 2 is greater than the radius of the sling body.

[0027] Furthermore, a clamping device 5 is provided inside the second shell. After the driving device stops extending the length of the connecting rope and the second shell stops sliding, the controller controls the clamping device 5 to stick to the surface of the sling body to prevent the second shell from sliding down along the sling body due to gravity.

[0028] Specifically, if Figure 3 As shown, the clamping device 5 is arranged on the inner side of the second shell 2. When the driving device stops extending the length of the connecting rope and the second shell stops sliding, the second shell is close to the surface of the sling body, which makes it easier for the stress sensor to obtain the stress data of the sling body and prevents the second shell from sliding down along the sling body due to gravity.

[0029] Furthermore, an image acquisition device is provided inside the second shell, and the image acquisition device is used to acquire the surface image of the sling body and send the surface image of the sling body to the second RFID transceiver, and the second RFID transceiver sends the received surface image of the sling body to the mobile terminal.

[0030] Specifically, scratches or damage on the surface of the sling body is also an important part of the sling body monitoring. Relevant technicians can view the surface image of the sling body through the transfer terminal to understand whether there are scratches or damage on the surface of the sling body, and take timely measures when abnormalities occur on the surface of the sling body.

[0031] Furthermore, the image acquisition device is a high-definition camera.

[0032] Furthermore, the mobile terminal is a laptop computer, a tablet computer or a mobile phone.

[0033] Furthermore, the holding device includes two semicircular rings made of rubber material. Specifically, the holding device has a certain anti-slip effect to prevent the second shell from sliding down due to gravity.

[0034] In summary, the RFID-based suspension bridge cable stress monitoring device of the present application can realize real-time monitoring of the displacement data, stress data, and surface image of the suspension bridge cable body, thereby improving the monitoring efficiency of the suspension bridge cable.

[0035] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely illustrative of the principles and applications of the invention. It should be understood that many modifications may be made to the illustrative embodiments, and that other arrangements may be devised, without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in ways other than those described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be employed in conjunction with other described embodiments.

Claims

1. An RFID-based suspension bridge cable stress monitoring device, characterized by: It comprises a sling body, a first shell (1), a driving device (3), a connecting rope (4), a second shell (2) and a mobile terminal; The first shell (1) is detachably sleeved on the upper end of the sling body, the first shell (1) is fixedly connected to the driving device (3), the driving device (3) is flexibly connected to one end of the connecting rope (4), the other end of the connecting rope (4) is fixedly connected to the second shell (2), and the second shell (2) is detachably sleeved on the outside of the sling body; the driving device (3) is used to control the extension or shortening of the connecting rope (4); and the second shell (2) is used to slide up and down along the sling body via the connecting rope; A displacement sensor and a first RFID transceiver are provided in the first housing (1); a controller, a stress sensor and a second RFID transceiver are provided in the second housing (2); The displacement sensor is used to obtain displacement data and send the displacement data to the first RFID transceiver; the first RFID transceiver is used to send the received displacement data to the mobile terminal and the controller; the controller is used to control the driving device to extend or shorten the length of the connecting rope after receiving the displacement data, so that the second shell (2) slides downward or upward along the sling body by a set distance; the stress sensor is used to obtain the stress data of the sling body after the second shell (2) stops sliding, and send the stress data to the second RFID transceiver, and the second RFID transceiver sends the received stress data to the mobile terminal; The mobile terminal is used to display the received displacement data and stress data.

2. The RFID-based suspension bridge cable stress monitoring device according to claim 1, characterized in that: The mobile terminal is provided with an alarm device, which determines whether the received stress data is less than a set threshold value, and issues an alarm if so.

3. The RFID-based suspension bridge cable stress monitoring device according to claim 1, characterized in that: The first shell (1) and the second shell (2) are annular shells, and the inner ring radius of the first shell (1) and the second shell (2) is greater than the radius of the sling body.

4. The RFID-based suspension bridge cable stress monitoring device according to claim 1, characterized in that: A clamping device (5) is also provided on the inner side of the second shell. After the driving device stops extending or shortening the connecting rope and the second shell stops sliding, the controller controls the clamping device (5) to tighten so that the clamping device (5) is tightly attached to the surface of the sling body, thereby preventing the second shell from sliding down along the sling body due to gravity.

5. The RFID-based suspension bridge cable stress monitoring device according to claim 1, characterized in that: An image acquisition device is also provided inside the second shell, and is used to acquire an image of the surface of the sling body and send the image to the second RFID transceiver. The second RFID transceiver sends the received image to the mobile terminal.

6. The RFID-based suspension bridge cable stress monitoring device according to claim 5, characterized in that: The image acquisition device is a high-definition camera.

7. The RFID-based suspension bridge cable stress monitoring device according to claim 1, characterized in that: The mobile terminal is a laptop computer, a tablet computer or a mobile phone.

8. The RFID-based suspension bridge cable stress monitoring device according to claim 4, characterized in that: The holding device (5) comprises two semicircular rings made of rubber material.

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