阅读说明：本技术 一种结构形变检测传感器及检测系统与检测方法 (Structural deformation detection sensor, detection system and detection method ) 是由 胡明哲 李立 霍玲玲 于 2019-10-18 设计创作，主要内容包括：本发明涉及一种结构形变检测传感器及检测系统与检测方法,属于结构形变检测领域。本结构形变检测传感器,包括：第一固定座,所述第一固定座上设有第一介质基板,所述第一介质基板的一端设有第一微带电路；第二固定座,所述第二固定座与所述第一固定座平行设置,所述第二固定座上设有第二介质基板,所述第二介质基板的一端设有第二微带电路,所述第二微带电路朝向所述第一微带电路,所述第一微带电路与所述第二微带电路之间留有互感耦合缝隙。本结构形变检测传感器的效果是能够简单方便快速的检测结构微小形变,检测准确度高,检测成本低,消耗的能源低,同时利于进行检测操作。(The invention relates to a structural deformation detection sensor, a detection system and a detection method, and belongs to the field of structural deformation detection. This structural deformation detection sensor includes: the first fixing seat is provided with a first dielectric substrate, and one end of the first dielectric substrate is provided with a first microstrip circuit; the second fixing seat is arranged in parallel with the first fixing seat, a second medium substrate is arranged on the second fixing seat, a second micro-strip circuit is arranged at one end of the second medium substrate, the second micro-strip circuit faces the first micro-strip circuit, and a mutual inductance coupling gap is reserved between the first micro-strip circuit and the second micro-strip circuit. The effect of this structural deformation detection sensor is that can be simple and convenient quick the small deformation of detection structure, and detection accuracy is high, detects with low costs, and the energy of consumption is low, does benefit to simultaneously and carries out the detection operation.)

1. A structural deformation detecting sensor, comprising:

the antenna comprises a first fixed seat (1), wherein a first dielectric substrate (3) is arranged on the first fixed seat (1), and a first microstrip circuit (4) is arranged at one end of the first dielectric substrate (3);

the second fixing seat (5), the second fixing seat (5) with first fixing seat (1) parallel arrangement, be equipped with second medium base plate (6) on second fixing seat (5), the one end of second medium base plate (6) is equipped with second microstrip circuit (7), second microstrip circuit (7) orientation first microstrip circuit (4), first microstrip circuit (4) with leave mutual inductance coupling gap between second microstrip circuit (7).

2. The structural deformation detection sensor according to claim 1, wherein a first inner cavity (8) is formed in the first fixing seat (1), a first opening (2) is formed in one side edge of the first fixing seat (1), the first opening (2) is communicated with the first inner cavity (8), the first dielectric substrate (3) is arranged in the first inner cavity (8), and one end, provided with the first microstrip circuit (4), of the first dielectric substrate (3) extends out of the first fixing seat (1) from the first opening (2).

3. A structural deformation detecting sensor according to claim 1, wherein a second inner cavity (9) is provided in the second fixing base (5), a second opening (10) is provided at one side of the second fixing base (5), the second opening (10) is communicated with the second inner cavity (9), the second dielectric substrate (6) is provided in the second inner cavity (9), and one end of the second dielectric substrate (6) provided with the second microstrip circuit (7) extends out of the second fixing base (5) from the second opening (10).

4. The structural deformation detection sensor according to claim 1, wherein the first microstrip circuit (4) includes a plurality of first rectangular grooves (11), the plurality of first rectangular grooves (11) are arranged in an array, two first metal strips (12) are disposed in each first rectangular groove (11) and are oppositely disposed, the two first metal strips (12) are bent and disposed in the corresponding first rectangular grooves (11), and the two first metal strips (12) are fixedly connected with the inner walls corresponding to the first rectangular grooves (11).

5. The structural deformation detection sensor according to claim 1, wherein the second microstrip circuit (7) includes a plurality of second rectangular grooves, the plurality of second rectangular grooves are arranged in an array, two second metal strips are disposed in each second rectangular groove, the two second metal strips are bent and disposed in the corresponding second rectangular groove, and the two second metal strips are fixedly connected with the inner wall of the corresponding second rectangular groove.

6. A structural deformation sensing transducer according to any one of claims 1 to 5, wherein the mutual inductance coupling gap has a value of 0 to 10 mm.

7. A structural deformation detection system, comprising the structural deformation detection sensor according to any one of claims 1 to 5, a microwave transceiver antenna and a carrier, wherein the microwave transceiver antenna is connected to the carrier, and a transmitting end of the microwave transceiver antenna faces a mutual inductance coupling gap between the first microstrip circuit (4) and the second microstrip circuit (7).

8. The structural deformation detection system according to claim 7, wherein the microwave transceiving antenna comprises a microwave substrate (13), a metal patch (14) and an antenna feeder (16), one side surface of the metal patch (14) is attached to one side surface of the microwave substrate (13), the antenna feeder (16) is fixedly connected to the microwave substrate (13), a transmitting groove (15) is formed in the metal patch (14), the transmitting groove (15) is long, and the transmitting groove (15) faces the mutual inductance coupling gap between the first microstrip circuit (4) and the second microstrip circuit (7).

9. The structural deformation detection system of claim 7 wherein the vehicle is a remote controlled automobile or an unmanned aerial vehicle.

10. A method of detecting using the structural deformation detecting system of any one of claims 7-9, comprising the steps of:

s1, respectively installing the first installation seat and the second installation seat on two sides of a detection position, oppositely arranging the first microstrip circuit (4) and the second microstrip circuit (7), and reserving a mutual inductance coupling gap between the first microstrip circuit (4) and the second microstrip circuit (7);

s2, driving the microwave receiving and transmitting antenna to move to the front of the mutual inductance coupling gap through the carrier, starting the microwave receiving and transmitting antenna to transmit microwaves, and generating reflected waves after the mutual inductance coupling gap receives the microwaves;

and S3, detecting the reflected wave in the step S2, drawing a reflection curve to obtain a resonance frequency point, and when the resonance frequency point drifts, indicating that structural deformation occurs.

Technical Field

The invention belongs to the field of structural deformation detection, and particularly relates to a structural deformation detection sensor, a detection system and a detection method.

Background

The structural deformation refers to the relative displacement caused in the structure after the structure is deformed or loosened. Generally, as the relative displacement occurs, stress is built up inside the structure and eventually damaged. Therefore, monitoring the deformation information of the structure in time is important for preventing the structure from failing and ensuring the reliability and safety of the structure.

At present, the technology of using a laser displacement sensor and the like to monitor the micro displacement of the structure is reported in China. However, the monitoring method has complex circuit and higher cost. Meanwhile, various structural changes are developed in development of buildings and the like, and high-difficulty and complex requirements are provided for structural deformation monitoring. Therefore, a simple, low-cost and high-accuracy sensor for detecting structural deformation is urgently needed.

Disclosure of Invention

The invention provides a structural deformation detection sensor, a detection system and a detection method for solving the technical problems, which can simply, conveniently and rapidly detect the micro deformation of the structure, have high detection accuracy, low detection cost and low energy consumption, and are beneficial to detection operation.

The technical scheme for solving the technical problems is as follows: a structural deformation detecting sensor comprising: the first fixing seat is provided with a first dielectric substrate, and one end of the first dielectric substrate is provided with a first microstrip circuit; the second fixing seat is arranged in parallel with the first fixing seat, a second medium substrate is arranged on the second fixing seat, a second micro-strip circuit is arranged at one end of the second medium substrate, the second micro-strip circuit faces the first micro-strip circuit, and a mutual inductance coupling gap is reserved between the first micro-strip circuit and the second micro-strip circuit.

This structural deformation detects sensor's beneficial effect is: through installing first fixing base and second fixing base respectively in easy deformation position and difficult deformation position, make leave mutual inductance coupling gap between first microstrip circuit and the second microstrip circuit, when taking place structure deformation, first fixing base or second fixing base are followed and are removed, thereby mutual inductance coupling gap produces the change, thereby detect out structure deformation through the change that detects mutual inductance coupling gap, detect through this detection sensor, it is high to detect the accuracy, be difficult for receiving other detection interference, it is with low costs to detect simultaneously, this detection sensor simple structure, easy manufacturing, the cost of manufacturing is equally low, can improve the efficiency of becoming the detection of structure.

On the basis of the technical scheme, the invention can be further improved as follows.

Further, a first inner cavity is arranged in the first fixing seat, a first opening is formed in one side edge of the first fixing seat, the first opening is communicated with the first inner cavity, the first dielectric substrate is arranged in the first inner cavity, and one end, provided with the first microstrip circuit, of the first dielectric substrate extends out of the first fixing seat from the first opening.

The beneficial effect of adopting the further scheme is that: the first medium substrate can be protected through the first fixing seat, so that the service life of the detection sensor is longer.

Furthermore, a second inner cavity is arranged in the second fixing seat, a second opening is formed in one side edge of the second fixing seat, the second opening is communicated with the second inner cavity, the second dielectric substrate is arranged in the second inner cavity, and one end, provided with the second microstrip circuit, of the second dielectric substrate extends out of the second fixing seat from the second opening.

The beneficial effect of adopting the further scheme is that: the second medium substrate can be protected through the second fixing seat, and the service life of the detection sensor is longer.

Furthermore, the first microstrip circuit comprises a plurality of first rectangular grooves, the first rectangular grooves are arranged in an array, each first rectangular groove is internally provided with two first metal strips which are oppositely arranged, the two first metal strips are bent and arranged in the corresponding first rectangular groove, and the two first metal strips are fixedly connected with the inner wall of the corresponding first rectangular groove.

The beneficial effect of adopting the further scheme is that: the artificial plasmon structure is formed by bending the first metal strip, an electric field can be formed in a concentrated mode, and the detection precision is higher.

Furthermore, the second microstrip circuit comprises a plurality of second rectangular grooves, the plurality of second rectangular grooves are arranged in an array, each second rectangular groove is internally provided with two second metal strips which are oppositely arranged, the two second metal strips are bent and arranged in the corresponding second rectangular groove, and the two second metal strips are fixedly connected with the inner wall of the corresponding second rectangular groove.

The beneficial effect of adopting the further scheme is that: the artificial plasmon structure is formed by bending the second metal strip, an electric field can be formed in a concentrated mode, and the detection precision is higher.

Further, the value of the mutual inductance coupling gap is 0-10 mm.

The beneficial effect of adopting the further scheme is that: the detection precision is improved.

The invention also provides a structural deformation detection system which comprises the structural deformation detection sensor, a microwave receiving and transmitting antenna and a carrier, wherein the microwave receiving and transmitting antenna is connected to the carrier, and the transmitting end of the microwave receiving and transmitting antenna faces to the mutual inductance coupling gap between the first microstrip circuit and the second microstrip circuit.

This structural deformation detecting system's beneficial effect is: through microwave transceiver antenna transmission microwave and receipt back wave to can detect out whether mutual inductive coupling gap changes, can accurately detect out structural deformation, drive microwave transceiver antenna through the carrier simultaneously and remove, can improve the detection efficiency who detects structural deformation, relative current detecting system, this detecting system detects conveniently, and it is high to detect the precision, and detection efficiency is high, detects with low costs simultaneously, does benefit to and uses widely.

On the basis of the technical scheme, the invention can be further improved as follows.

Further, the microwave transceiving antenna comprises a microwave substrate, a metal patch and an antenna feeder, wherein one side surface of the metal patch is attached to one side surface of the microwave substrate, the antenna feeder is fixedly connected to the microwave substrate, a transmitting groove is formed in the metal patch and is in a long strip shape, and the transmitting groove faces towards the mutual inductance coupling gap between the first microstrip circuit and the second microstrip circuit.

The beneficial effect of adopting the further scheme is that: the microwave transmitting and receiving antenna is beneficial to the concentrated arrival of the microwave transmitted by the microwave transmitting and receiving antenna at the mutual inductance coupling gap, and the detection precision is improved.

Further, the carrier is a remote control automobile or an unmanned aerial vehicle.

The beneficial effect of adopting the further scheme is that: carry microwave transceiver antenna through remote control car or unmanned aerial vehicle and remove, can detect the place that the manual work can't conveniently reach such as narrow and small place or house outer wall face for the detection range to structural deformation is wider, more does benefit to wide use.

The invention also provides a detection method adopting the structural deformation detection system, which comprises the following steps:

s1, respectively installing the first installation seat and the second installation seat on two sides of a detection position, arranging the first microstrip circuit and the second microstrip circuit oppositely, and reserving a mutual inductance coupling gap between the first microstrip circuit and the second microstrip circuit;

s2, driving the microwave receiving and transmitting antenna to move to the front of the mutual inductance coupling gap through the carrier, starting the microwave receiving and transmitting antenna to transmit microwaves, and generating reflected waves after the mutual inductance coupling gap receives the microwaves;

and S3, detecting the reflected wave in the step S2, drawing a reflection curve to obtain a resonance frequency point, and when the resonance frequency point drifts, indicating that structural deformation occurs.

The detection method has the advantages that: the detection method improves the detection precision, reduces the detection cost, and can detect the deformation of the structure in time by matching the microwave transmitting and receiving antenna with the detection sensor, thereby having higher detection efficiency, avoiding the need of excessive conditions of the laser detection method and being more convenient to detect.

Drawings

FIG. 1 is a schematic perspective view of a structural deformation detection sensor according to the present invention;

FIG. 2 is a front cross-sectional view of a structural deformation detecting sensor in accordance with the present invention;

FIG. 3 is a partial structure diagram of a first microstrip circuit according to the present invention;

FIG. 4 is a schematic perspective view of a structural deformation detection system according to the present invention;

FIG. 5 is a schematic diagram of the relationship between the mutual inductance coupling gap size and the microwave transceiver antenna according to the present invention;

FIG. 6 is a schematic diagram of the linear relationship between the resonant frequency point and the mutual inductance coupling gap size according to the present invention;

FIG. 7 is a schematic diagram of the electric field distribution when the mutual inductance coupling gap of the present invention is 0 mm;

FIG. 8 is a schematic diagram of the electric field distribution when the mutual inductance coupling gap of the present invention is 3 mm.

In the drawings, the components represented by the respective reference numerals are listed below:

1. the antenna comprises a first fixing seat, 2, a first opening, 3, a first dielectric substrate, 4, a first microstrip circuit, 5, a second fixing seat, 6, a second dielectric substrate, 7, a second microstrip circuit, 8, a first inner cavity, 9, a second inner cavity, 10, a second opening, 11, a first rectangular groove, 12, a first metal strip, 13, a microwave substrate, 14, a metal patch, 15, an emission groove, 16 and an antenna feeder line.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.