Structural data acquisition device based on fusion of RFID passive sensor and unmanned aerial vehicle

Abstract

The utility model relates to a structure data acquisition device based on fusion of an RFID passive sensor and an unmanned aerial vehicle, which is used for acquiring health information of a building structure and comprises a passive sensor assembly, an RFID reading assembly and the unmanned aerial vehicle. The passive sensor assembly is fixed on a beam or a column of a building structure, the passive sensor assembly is located at the two ends or the middle position of the beam or the column, the passive sensor assembly comprises an RFID tag modulus acquisition module and a sensor module used for acquiring health information of the building structure, the RFID tag modulus acquisition module is connected with the sensor module, and the RFID tag modulus acquisition module is connected with the sensor module. The RFID reading assembly is detachably fixed on the unmanned aerial vehicle, and the RFID reading assembly is in wireless communication connection with the RFID tag modulus acquisition module. Compared with the prior art, the system has the advantages that the passive sensors are convenient to arrange, the installation and maintenance cost is low, and the collected data is comprehensive and accurate.

Description

Technical Field

[0001] The utility model relates to the field of structural health detection equipment, in particular to a structural data acquisition device based on the fusion of RFID passive sensors and unmanned aerial vehicles. Background Art

[0002] Structural health monitoring technology detects and identifies damage to engineering structures, and the overall continuity of the system plays a crucial role in the structural serviceability. Building structures have very long service lives. During use, due to factors such as overload, material aging, and structural defects, the structure will accumulate damage, reducing its load-bearing capacity. Therefore, regular monitoring of the health of the building structure to confirm the presence of damage is crucial to its reliability and safety.

[0003] With the promotion of structural health monitoring technology, building structures are currently monitored through online real-time sensors. However, the deployment of online real-time sensors is cumbersome, and the implementation and subsequent maintenance of sensors are expensive. If the number of sensors deployed is reduced, it will lead to insufficient monitoring data of the building structure, inability to fully understand the working status of the structure, and low accuracy of the detection results. Utility Model Content

[0004] The purpose of this utility model is to overcome the defects of the above-mentioned existing technologies, such as the trouble of deploying online real-time sensors, the high cost of sensor implementation and subsequent maintenance, and the fact that reducing the arrangement of sensors will lead to insufficient monitoring data of the building structure and the inability to fully understand the working properties of the structure. A structural data acquisition device based on the fusion of RFID passive sensors and drones is provided.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A structural data acquisition device based on the fusion of RFID passive sensors and drones, used for collecting health information of building structures, comprising a passive sensor component, an RFID reading component, and a drone;

[0007] The passive sensor assembly is fixed on the beam or column of the building structure. The passive sensor assembly is located at both ends or in the middle of the beam or column. The passive sensor assembly includes an RFID tag analog and digital acquisition module and a sensor module for collecting building structure health information. The RFID tag analog and digital acquisition module is connected to the sensor module. The RFID reading assembly is detachably fixed on the drone, and the RFID reading assembly is wirelessly connected to the RFID tag analog and digital acquisition module.

[0008] Preferably, the sensor module includes a MEMS sensor, which is a mechanical microsensor.

[0009] Preferably, the passive sensor assembly further comprises an RFID tag antenna, and the RFID tag antenna is electrically connected to the MEMS sensor.

[0010] Preferably, there are multiple RFID tag antennas, and each RFID tag antenna is symmetrically fixed on two sides of the MEMS sensor.

[0011] Preferably, the passive sensor assembly further comprises a fixed shell, the RFID tag analog-digital acquisition module and the sensor module are both fixed in the fixed shell, and the fixed shell is bonded to the building structure by structural silicone.

[0012] Preferably, the passive sensor assembly is fixed at a position close to a rigid joint of the building structure.

[0013] Preferably, the passive sensor assembly is fixed at a position close to a hinge point of the building structure.

[0014] Preferably, a communication module is provided in the RFID reading component, and the RFID reading component is wirelessly connected to a remote server via the communication module.

[0015] Preferably, the RFID reading component includes a RISC-V microcontroller and an RFID reading module connected to each other, and the RISC-V microcontroller is connected to a lithium battery.

[0016] Preferably, the identification frequency band of the RFID reading component and the RFID tag analog-to-digital acquisition module is ultra-high frequency.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] (1) This solution integrates the RFID tag analog-to-digital acquisition module and the sensor module into a passive sensor component. The sensor module collects the building structure health information and stores the building structure health information in the RFID tag analog-to-digital acquisition module. The drone drives the RFID reading component to move near the passive sensor component, reads the building structure health information in the RFID tag analog-to-digital acquisition module, and completes the collection of building structure health information.

[0019] The passive sensor component integrated with the RFID tag analog-to-digital acquisition module and the sensor module collects and stores the health information of the building structure, avoiding the cumbersome deployment of existing online real-time sensors. The passive sensor component is easy to install and use, which can effectively reduce the cost of sensor implementation and subsequent maintenance. Moreover, the passive sensor is easy to install and multiple passive sensors can be deployed to achieve redundant installation, ensuring the amount of health data collected on the building structure, so as to fully understand the working status of the building structure and improve the accuracy of the detection results.

[0020] (2) In this solution, the passive sensor component is set in the middle position of the beam or column to measure the inclination of the structure. It is set near the rigid node of the beam or column to measure the rotational deformation of the node under large bending moment and large torque. It is set near the hinge point to measure the bending deformation of the end of the beam or column under load, so as to realize the collection of multi-faceted information of the building structure, ensure the comprehensiveness of the collected data, and provide more accurate and comprehensive feedback on the working status of the building structure. Moreover, the RFID identification frequency band adopts ultra-high frequency, and the data collection reading distance can reach several meters, and it has a certain penetration ability, which is convenient for drones to fly and avoid indoors, and improves the convenience and safety of information collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of the structural data acquisition device provided by the utility model;

[0022] Figure 2 This is a structural diagram of the information reading module composed of the RFID reading component and the drone provided by the utility model;

[0023] In the figure: 1. Building structure, 2. Passive sensor components, 3. RFID reading components, 4. Drone. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0027] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0028] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0029] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0030] Example 1

[0031] like Figure 1 and Figure 2 As shown, this embodiment provides a structural data acquisition device based on the fusion of RFID passive sensors and drones, which is used to collect health information of a building structure 1. The device includes a passive sensor component 2, an RFID reading component 3 and a drone 4;

[0032] The passive sensor component 2 is fixed on the beam or column of the building structure 1. The passive sensor component 2 is located at both ends or in the middle of the beam or column. The passive sensor component 2 includes an RFID tag analog-to-digital acquisition module and a sensor module for collecting building structure health information. The RFID tag analog-to-digital acquisition module is connected to the sensor module. The RFID reading component 3 is detachably fixed on the drone 4. The RFID reading component 3 is wirelessly connected to the RFID tag analog-to-digital acquisition module.

[0033] Working principle: The RFID tag analog-to-digital acquisition module and the sensor module are integrated into the passive sensor component 2. The building structure health information is collected through the sensor module and stored in the RFID tag analog-to-digital acquisition module. The drone 4 drives the RFID reading component 3 to move near the passive sensor component 2, reads the building structure health information in the RFID tag analog-to-digital acquisition module, and completes the collection of building structure health information.

[0034] The passive sensor component 2, which is integrated with the RFID tag analog-to-digital acquisition module and the sensor module, collects and stores the health information of the building structure, avoiding the tedious deployment of existing online real-time sensors. The passive sensor component 2 is easy to install and use, and can effectively reduce the cost of sensor implementation and subsequent maintenance. Moreover, the passive sensor 2 is easy to install and multiple can be deployed to achieve redundant installation, ensuring the amount of health data collected on the building structure, so as to fully understand the working status of the building structure and improve the accuracy of the detection results.

[0035] In a preferred embodiment, the sensor module includes a MEMS sensor, which is a mechanical microsensor. The passive sensor assembly 2 also includes an RFID tag antenna, which is electrically connected to the MEMS sensor. There are multiple RFID tag antennas, each symmetrically fixed on either side of the MEMS sensor.

[0036] Specifically, the passive sensor assembly 2 further includes a fixed shell, and the RFID tag analog-digital acquisition module connected to the sensor module are all fixed in the fixed shell, and the fixed shell is bonded to the building structure through structural silicone.

[0037] The passive sensor assembly 2 is fixed near the rigid joints and hinge points of the building structure. Positioning the passive sensor assembly in the middle of a beam or column measures the structure's tilt. Positioning it near a rigid joint measures its rotational deformation under large bending moments and torques. Positioning it near a hinge point measures the bending deformation of the beam or column end under load. This enables comprehensive data collection of information about the building structure, ensuring the comprehensiveness of the collected data and providing more accurate and comprehensive feedback on the working status of the building structure.

[0038] The RFID reader component 3 is equipped with a communication module, through which the RFID reader component 3 wirelessly connects to a remote server. The RFID reader component 3 includes a RISC-V microcontroller and an RFID reader module connected to each other, and the RISC-V microcontroller is connected to a lithium battery.

[0039] The RFID reader module is integrated with the RISC-V single-chip system, running a streamlined Linux system, and is independently powered by a small lithium battery, which can support at least a 15-minute inspection cycle. The RISC-V single-chip system includes a wifi module, which automatically connects to the monitoring server when working.

[0040] The RFID reader component 3 and the RFID tag analog-to-digital acquisition module use an ultra-high frequency (UHF) frequency band, which is above 30 MHz. The data can be read from a distance of several meters and has a certain degree of penetration, making it easier for drones to fly and avoid indoors.

[0041] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.

Claims

1. A structural data acquisition device based on the fusion of RFID passive sensors and drones, used for collecting health information of building structures (1), characterized in that: The device comprises a passive sensor component (2), an RFID reading component (3) and a drone (4); The passive sensor assembly (2) is fixed on a beam or column of a building structure (1), and the passive sensor assembly (2) is located at both ends or in the middle of the beam or column. The passive sensor assembly (2) comprises an RFID tag analog-to-digital acquisition module and a sensor module for acquiring building structure health information. The RFID tag analog-to-digital acquisition module is connected to the sensor module. The RFID reading assembly (3) is detachably fixed on a drone (4), and the RFID reading assembly (3) is wirelessly connected to the RFID tag analog-to-digital acquisition module.

2. The structural data acquisition device based on the fusion of RFID passive sensor and drone according to claim 1 is characterized in that: The sensor module includes a MEMS sensor, which is a mechanical micro sensor.

3. The structural data acquisition device based on the fusion of RFID passive sensor and drone according to claim 2 is characterized in that: The passive sensor assembly (2) further comprises an RFID tag antenna, wherein the RFID tag antenna is electrically connected to the MEMS sensor.

4. The structural data acquisition device based on the fusion of RFID passive sensor and drone according to claim 3 is characterized in that: There are multiple RFID tag antennas, and each RFID tag antenna is symmetrically fixed on both sides of the MEMS sensor.

5. The structural data acquisition device based on the fusion of RFID passive sensor and drone according to claim 3 is characterized in that: The passive sensor assembly (2) further comprises a fixed housing, wherein the RFID tag analog-digital acquisition module and the sensor module are both fixed in the fixed housing, and the fixed housing is bonded to the building structure via structural silicone.

6. The structural data acquisition device based on the fusion of RFID passive sensor and drone according to claim 1 is characterized in that: The passive sensor assembly (2) is fixed at a position close to a rigid joint of the building structure.

7. The structural data acquisition device based on the fusion of RFID passive sensor and drone according to claim 1 is characterized in that: The passive sensor assembly (2) is fixed at a position close to a hinge point of the building structure.

8. The structural data acquisition device based on the fusion of RFID passive sensor and drone according to claim 1 is characterized in that: A communication module is provided in the RFID reading component (3), and the RFID reading component (3) is wirelessly connected to a remote server via the communication module.

9. The structural data acquisition device based on the fusion of RFID passive sensor and drone according to claim 1 is characterized in that: The RFID reading component (3) comprises a RISC-V single-chip microcomputer and an RFID reading module connected to each other, and the RISC-V single-chip microcomputer is connected to a lithium battery.

10. The structural data acquisition device based on the fusion of RFID passive sensors and drones according to claim 1 is characterized in that: The identification frequency band of the RFID reading component (3) and the RFID tag analog-to-digital acquisition module is ultra-high frequency.

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