Microdot matrix protection structure of wireless passive temperature sensor

Abstract

The utility model relates to the technical field of temperature sensors, in particular to a microarray protection structure of a wireless passive temperature sensor. The embodiment of the utility model provides a micro-dot matrix protection structure of a wireless passive temperature sensor. The micro-dot matrix protection structure comprises a base and a cover body, the base is in a cylinder shape with one open end and one closed end, the cover body is a cylinder with two open ends, the cover body is inserted into the base and connected with the base, a partition plate perpendicular to the axis of the cover body is arranged in the middle of the cover body, the inner diameter of the cover body is matched with the outer diameter of the temperature-sensitive element, and the partition plate, the inner wall of the cover body and the closed end of the base form a space for containing the temperature-sensitive element. The partition plate is provided with a hollow antenna window which is used for transmitting electromagnetic waves; the base and the cover plate are of a micro-lattice structure, the micro-lattice structure comprises a plurality of three-dimensional structures which are arranged repeatedly, and each three-dimensional structure is composed of a plurality of rod bodies. According to the scheme, the wireless passive temperature sensor can be stably protected in a high-temperature and high-disturbance environment.

Description

Technical Field

[0001] This utility model relates to the field of temperature sensor technology, and in particular to a micro-array protection structure for a wireless passive temperature sensor. Background Technology

[0002] Polymer precursor converted SiBCN ceramic (PDC-SiBCN) is a material whose dielectric constant changes with temperature. This property can be used to fabricate wireless passive temperature sensors, which can measure the temperature of the workpiece by exchanging signals with the outside world through electromagnetic waves without the need for power supply and wires.

[0003] Currently, wireless passive sensors are mainly used in high-temperature and high-distress environments, such as the combustion chamber of an aircraft engine or turbine blades. This can easily damage the packaging of the wireless passive sensor, causing damage to the internal temperature-sensitive elements.

[0004] To address the aforementioned issues, there is an urgent need for a protective structure that can stably protect wireless passive temperature sensors in high-temperature and high-disturbance environments. Utility Model Content

[0005] This utility model provides a micro-array protection structure for a wireless passive temperature sensor, which can stably protect the wireless passive temperature sensor in high-temperature and high-disturbance environments.

[0006] This utility model embodiment provides a micro-array protective structure for a wireless passive temperature sensor, including a base and a cover;

[0007] The base is a cylindrical shape with one end open and the other end closed. The cover is a cylindrical shape with both ends open. The cover is inserted into the base and connected to it. A partition perpendicular to the axis of the cover is provided in the middle of the cover. The inner diameter of the cover matches the outer diameter of the temperature-sensitive element. The partition, the inner wall of the cover, and the closed end of the base form a space for placing the temperature-sensitive element. The partition is provided with a hollowed-out antenna window for transmitting electromagnetic waves.

[0008] The base and the cover plate are micro-lattice structures, which include multiple repeating three-dimensional structures, each composed of multiple rods.

[0009] In one possible design, the three-dimensional structure of the micro-lattice structure is composed of multiple rods with overlapping midpoints.

[0010] In one possible design, the three-dimensional structure of the micro-lattice structure consists of multiple triangular frames with overlapping vertices, each triangular frame being composed of three rods.

[0011] In one possible design, the three-dimensional structure of the micro-lattice structure is formed by two sets of intersecting rods, with the rods in the same set being parallel to each other and the rods in different sets being perpendicular to each other.

[0012] In one possible design, the rod is made of zirconia ceramic material.

[0013] In one possible design, the rod is made of alumina ceramic material.

[0014] In one possible design, the cover and the base are connected by threads.

[0015] In one possible design, the cover and the base are connected by a snap-fit.

[0016] Compared with the prior art, the present invention has at least the following advantages:

[0017] In this embodiment, the typical use of wireless passive temperature sensors involves directly attaching a temperature-sensitive element with a metal coating to the surface of the workpiece being measured. This can cause thermal vibrations to impact the surface metal layer and the internal ceramic sensing element, potentially leading to structural damage and rendering the sensing function ineffective. To address this, this solution incorporates a micro-matrix-filled replaceable buffer base. The base can also be rapidly manufactured using 3D printing technology. This avoids direct contact between the sensing element and the highly vibrating workpiece surface, while the internal micro-matrix structure does not affect thermal conduction, ensuring that the monitored temperature remains true to the temperature of the workpiece itself. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the micro-array protection structure of a wireless passive temperature sensor provided in this embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the micro-array protection structure of another wireless passive temperature sensor provided in this embodiment of the present invention;

[0021] Figure 3 This is a three-dimensional structure provided in an embodiment of the present utility model;

[0022] Figure 4 This is another three-dimensional structure provided by the embodiments of this utility model;

[0023] Figure 5 This is yet another three-dimensional structure provided by this utility model embodiment.

[0024] In the picture:

[0025] 1-Base;

[0026] 2-Cap;

[0027] 3-Partition;

[0028] 4-Temperature-sensitive element. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] In the description of the embodiments of this utility model, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; unless otherwise specified or explained, the term "multiple" refers to two or more; the terms "connected," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] In this specification, it should be understood that the directional terms such as "upper" and "lower" used in the description of the embodiments of this utility model are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this utility model. Furthermore, in the context, it should also be understood that when it is mentioned that one element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0032] like Figure 1 and Figure 2 As shown, this utility model embodiment provides a micro-array protective structure for a wireless passive temperature sensor, including a base 1 and a cover 2;

[0033] The base 1 is a cylindrical shape with one end open and the other end closed. The cover 2 is a cylindrical shape with both ends open. The cover 2 is inserted into the base 1 and connected to it. A partition 3 perpendicular to the axis of the cover 2 is provided in the middle of the cover 2. The inner diameter of the cover 2 matches the outer diameter of the temperature-sensitive element 4. The partition 3, the inner wall of the cover 2 and the closed end of the base 1 form a space for placing the temperature-sensitive element 4. The partition 3 is provided with a hollowed-out antenna window, which is used to transmit electromagnetic waves.

[0034] The base 1 and the cover plate are micro-lattice structures, which include multiple repeating three-dimensional structures, each composed of multiple rods.

[0035] In this embodiment, the use of a typical wireless passive temperature sensor involves directly attaching the temperature-sensitive element 4, which is coated with a metal layer, to the surface of the workpiece being measured. This can cause thermal vibrations of the equipment to impact the surface metal layer and the internal ceramic sensing element, potentially leading to structural damage and rendering the sensing function ineffective. To address this, this solution incorporates a micro-matrix-filled replaceable buffer base 1. The base 1 can also be rapidly manufactured using 3D printing technology. This avoids direct contact between the sensing element and the highly vibrating workpiece surface, while the internal micro-matrix structure does not affect the thermal conduction of the structure, ensuring that the monitored temperature remains the temperature of the workpiece itself to the greatest extent possible.

[0036] The internal micro-lattice structure used for buffering, vibration resistance, energy absorption, and structural reinforcement can be replaced. Depending on the specific application scenario, the three-dimensional lattice structure can be replaced according to design requirements. Compared with ordinary planar honeycomb, circular, and square structures, the filling of the three-dimensional lattice structure can not only enhance the overall structural strength and achieve the main purpose of encapsulating and protecting the internal sensitive elements, but also has a relatively low density, which will not affect the overall weight.

[0037] In the selection of the temperature-sensitive element 4, SiBCN ceramic converted from polyborosilicate is preferred. Compared with other precursor ceramics (such as PDC-SiC, PDC-SiCN), PDC-SiBCN has better high-temperature thermal stability and better high-temperature oxidation resistance through the introduction of boron element, which can effectively perform wireless passive temperature sensing function.

[0038] Please refer to Figure 3 In some embodiments of this utility model, the three-dimensional structure of the micro-lattice structure is composed of multiple rods with overlapping midpoints.

[0039] Please refer to Figure 4 In some embodiments of this utility model, the three-dimensional structure of the micro-lattice structure is composed of multiple triangular frames with overlapping vertices, and the triangular frames are composed of three rods.

[0040] Please refer to Figure 5In some embodiments of this utility model, the three-dimensional structure of the micro-lattice structure is formed by two sets of intersecting rods, with the rods in the same set being parallel to each other and the rods in different sets being perpendicular to each other.

[0041] In some embodiments of this invention, the rod is made of zirconia ceramic material.

[0042] In some embodiments of this utility model, the rod is made of alumina ceramic material.

[0043] The rod is made of alumina and zirconia ceramics, which are the same ceramic materials as the temperature-sensitive element 4. For the measured hot end component made of ceramic-based materials, the thermal matching between the two is better than that between high-temperature alloys and ceramic-based materials, which can reduce the thermal mismatch effect and improve the temperature measurement accuracy. The structure made of the material can be easily realized using existing 3D printing technology.

[0044] In some embodiments of this utility model, the cover 2 and the base 1 are connected by threads.

[0045] The threaded design allows the entire structure to be disassembled, which makes it easier for engineers to replace the internal temperature sensing element after long-term use. On the other hand, the detachable packaging structure also has a higher cost advantage. Furthermore, the corresponding circumferential dot matrix filling protective structure and micro dot matrix filling base 1 can be 3D printed separately as needed, with high adaptability.

[0046] In some embodiments of this utility model, the cover 2 and the base 1 are connected by a snap fastener.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A micro-array protective structure for a wireless passive temperature sensor, characterized in that, Includes a base (1) and a cover (2); The base (1) is a cylindrical shape with one end open and the other end closed. The cover (2) is a cylindrical shape with both ends open. The cover (2) is inserted into the base (1) and connected to it. A partition (3) perpendicular to the axis of the cover (2) is provided in the middle of the cover (2). The inner diameter of the cover (2) matches the outer diameter of the temperature-sensitive element (4). The partition (3), the inner wall of the cover (2) and the closed end of the base (1) form a space for placing the temperature-sensitive element (4). The partition (3) is provided with a hollowed-out antenna window. The antenna window is used to transmit electromagnetic waves. The base (1) and the cover are micro-lattice structures, the micro-lattice structure includes multiple repeating three-dimensional structures, and the three-dimensional structure is composed of multiple rods.

2. The micro-array protection structure for a wireless passive temperature sensor according to claim 1, characterized in that, The three-dimensional structure of the micro-lattice structure is composed of multiple rods with overlapping midpoints.

3. The micro-array protection structure for a wireless passive temperature sensor according to claim 1, characterized in that, The three-dimensional structure of the micro-lattice structure is composed of multiple triangular frames with overlapping vertices, and each triangular frame is composed of three rods.

4. The micro-array protection structure for a wireless passive temperature sensor according to claim 1, characterized in that, The three-dimensional structure of the micro-lattice structure is composed of two sets of intersecting rods, with the rods in the same set being parallel to each other and the rods in different sets being perpendicular to each other.

5. The micro-array protection structure for a wireless passive temperature sensor according to claim 1, characterized in that, The rod is made of zirconia ceramic material.

6. The micro-array protection structure for a wireless passive temperature sensor according to claim 1, characterized in that, The rod is made of alumina ceramic material.

7. The micro-array protection structure for a wireless passive temperature sensor according to claim 1, characterized in that, The cover (2) and the base (1) are connected by threads.

8. The micro-array protection structure for a wireless passive temperature sensor according to claim 1, characterized in that, The cover (2) and the base (1) are connected by a snap fastener.

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