Temperature measuring device based on wireless surface acoustic wave

Abstract

The utility model provides a temperature measuring device based on wireless surface acoustic waves, which comprises a bonding bottom liner, a heat conduction part and a wireless surface acoustic wave temperature sensor, the wireless surface acoustic wave temperature sensor is arranged in the heat conduction part, the heat conduction part is compositely connected with the bonding bottom liner, the heat conduction part is positioned in the middle of the bonding bottom liner, and the bonding bottom liner is arranged in the heat conduction part. The heat conduction part is provided with a heat conduction bottom face, the heat conduction bottom face is flush with the bonding face of the bonding bottom lining, and the temperature sensing end of the wireless surface acoustic wave temperature sensor makes contact with the heat conduction bottom face. The temperature measuring device is bonded and fixed on the equipment to be measured through the bonding bottom lining, and meanwhile, the wireless surface acoustic wave temperature sensor is fixed, so that the mounted temperature measuring device has a relatively good fitting degree with the equipment to be measured, is accurate in temperature measurement, does not move due to vibration of the equipment, and can ensure that the temperature measuring device is always in contact with the equipment to be measured for temperature sensing.

Description

[Technical field]

[0001] The utility model relates to a temperature measuring device based on wireless surface acoustic waves. [Background technology]

[0002] In some high-voltage switch cabinets, temperature sensors are installed for real-time temperature monitoring to avoid safety accidents caused by over-temperature. Currently, wireless surface acoustic wave temperature sensors are more commonly used. This type of temperature sensor is wireless and passive, and is usually tied to the object being measured in a structure similar to a watch strap. However, in actual use, high-voltage switch cabinets or other high-voltage equipment will inevitably vibrate, and vibration will cause the temperature sensor to shift, resulting in a change in the phase of the surface acoustic wave, and the accuracy of temperature measurement will also be affected.

[0003] Therefore, it is necessary to make further improvements. [Contents of the utility model]

[0004] The purpose of the utility model is to overcome the above problems. We provide a temperature measuring device based on wireless surface acoustic waves, which has the advantages of easy installation and good fit.

[0005] To achieve the above-mentioned purpose, we provide a temperature measuring device based on wireless surface acoustic wave, which includes an adhesive substrate, a heat-conducting part and a wireless surface acoustic wave temperature sensor. The wireless surface acoustic wave temperature sensor is arranged inside the heat-conducting part. The heat-conducting part and the adhesive substrate are compositely connected together, and the heat-conducting part is located in the middle position of the adhesive substrate. The heat-conducting part has a heat-conducting bottom surface, which is flush with the adhesive surface of the adhesive substrate, and the temperature sensing end of the wireless surface acoustic wave temperature sensor is in contact with the heat-conducting bottom surface.

[0006] In one or more embodiments, the adhesive surface of the adhesive backing is covered with release paper, and the release paper also covers the thermally conductive bottom surface.

[0007] In one or more embodiments, the release paper is provided with a first hand-tear portion extending outward, and the adhesive backing has a second hand-tear portion extending outward, and the first hand-tear portion is offset from the second hand-tear portion.

[0008] In one or more embodiments, the adhesive backing is circular or rectangular, and the area of ​​the adhesive backing is at least twice the area of ​​the thermal conductive bottom surface.

[0009] In one or more embodiments, the thermally conductive bottom surface is made of a material selected from thermally conductive silicone or thermally conductive grease.

[0010] In one or more embodiments, the wireless surface acoustic wave temperature sensor includes an antenna, an interdigital transducer, a reflection grating and a piezoelectric substrate.

[0011] Compared with the background technology, the utility model has the following technical effects: the temperature measuring device is fixed on the device under test by bonding with the adhesive backing, and at the same time, the wireless surface acoustic wave temperature sensor is fixed. After installation, the temperature measuring device has a good fit with the device under test, and the temperature measurement is accurate, and will not move due to vibration of the device, so as to ensure that it is always in contact with the device under test to sense temperature.

Brief Description of the Drawings

[0012] Figure 1 The structure of the temperature measuring device of the embodiment of the utility model is a schematic diagram;

[0013] Figure 2 It is a top view of the temperature measuring device according to an embodiment of the utility model. [Specific implementation method]

[0014] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0015] Please see Figure 1-2 The present application provides a temperature measuring device based on wireless surface acoustic wave, which includes an adhesive substrate 1, a heat conducting part 2 and a wireless surface acoustic wave temperature sensor 3, wherein the wireless surface acoustic wave temperature sensor 3 includes an antenna, an interdigital transducer, a reflective grating and a piezoelectric substrate. The wireless surface acoustic wave temperature sensor is arranged inside the heat conducting part, the heat conducting part 2 is compositely connected with the adhesive substrate 1, and the heat conducting part is located in the middle of the adhesive substrate, the heat conducting part has a heat conducting bottom surface 21, and the heat conducting bottom surface is flush with the bonding surface of the adhesive substrate to ensure that when the adhesive substrate is bonded and fixed to the device under test, the heat conducting bottom surface fits the device under test, so as to facilitate temperature measurement, and the temperature sensing end of the wireless surface acoustic wave temperature sensor 3 contacts the heat conducting bottom surface 21. This solution fixes the heat conducting part on the device under test through the adhesive substrate, and transmits the temperature of the device under test to the temperature sensing end of the wireless surface acoustic wave temperature sensor through the heat conducting bottom surface, which has the advantages of being easy to install and not being disturbed by the vibration of the device under test.

[0016] The adhesive surface of the adhesive backing 1 is covered with a release paper 4, which also covers the thermally conductive bottom surface 21. The release paper can provide dust protection for the adhesive surface and the thermally conductive bottom surface, preventing the adhesive surface from being contaminated by dust and affecting the bonding firmness, and can also prevent the thermally conductive bottom surface from being contaminated by dust and affecting the thermal conductivity.

[0017] The release paper is provided with a first hand-tear portion 41 extending outward, and the adhesive backing 1 has a second hand-tear portion 11 extending outward. The first hand-tear portion and the second hand-tear portion are offset. The first hand-tear portion can be provided to facilitate users to tear off the release paper, and the second hand-tear portion can be provided to facilitate users to disassemble the adhesive backing later.

[0018] The adhesive backing 1 is circular or rectangular, which is selected according to actual needs and is not limited here. The area of ​​the adhesive backing is at least twice the area of ​​the thermal conductive bottom surface 21 to ensure that there is a large enough adhesive area to fix the thermal conductive part.

[0019] The heat-conducting bottom surface 21 is made of a material selected from the group consisting of heat-conducting silica gel and heat-conducting silicone grease, both of which are heat-conducting materials with good heat-conducting properties.

[0020] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed in the present invention should be included in the protection scope recorded in the claims.

Claims

1. A temperature measuring device based on wireless surface acoustic wave, characterized in that: The invention comprises an adhesive substrate (1), a heat conducting part (2) and a wireless surface acoustic wave temperature sensor (3), wherein the wireless surface acoustic wave temperature sensor is arranged inside the heat conducting part, the heat conducting part (2) and the adhesive substrate (1) are compositely connected together, and the heat conducting part is located in the middle of the adhesive substrate, the heat conducting part has a heat conducting bottom surface (21), and the heat conducting bottom surface is flush with the adhesive surface of the adhesive substrate, and the temperature sensing end of the wireless surface acoustic wave temperature sensor (3) is in contact with the heat conducting bottom surface (21).

2. A temperature measuring device based on wireless surface acoustic wave according to claim 1, characterized in that: The adhesive surface of the adhesive backing (1) is covered with a release paper (4), and the release paper also covers the heat-conducting bottom surface (21).

3. A temperature measuring device based on wireless surface acoustic wave according to claim 2, characterized in that: The release paper is provided with a first hand-tear portion (41) extending outwards, and the adhesive backing (1) has a second hand-tear portion (11) extending outwards, and the first hand-tear portion and the second hand-tear portion are offset.

4. The temperature measuring device based on wireless surface acoustic wave according to claim 1, characterized in that: The bonding substrate (1) is circular or rectangular in shape, and the area of ​​the bonding substrate is at least twice the area of ​​the heat-conducting bottom surface (21).

5. The temperature measuring device based on wireless surface acoustic wave according to claim 1, characterized in that: The heat-conducting bottom surface (21) is made of a material selected from the group consisting of heat-conducting silica gel and heat-conducting silicone grease.

6. The temperature measuring device based on wireless surface acoustic wave according to claim 1, characterized in that: The wireless surface acoustic wave temperature sensor (3) comprises an antenna, an interdigital transducer, a reflection grating and a piezoelectric substrate.

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