CN209605964U - An Accurate Temperature Sensor - Google Patents
An Accurate Temperature Sensor Download PDFInfo
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- CN209605964U CN209605964U CN201920111885.0U CN201920111885U CN209605964U CN 209605964 U CN209605964 U CN 209605964U CN 201920111885 U CN201920111885 U CN 201920111885U CN 209605964 U CN209605964 U CN 209605964U
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- 239000000523 sample Substances 0.000 claims abstract description 37
- 238000005259 measurement Methods 0.000 claims abstract description 17
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 9
- 239000011810 insulating material Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910001095 light aluminium alloy Inorganic materials 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims 1
- 238000009529 body temperature measurement Methods 0.000 abstract description 3
- 230000006870 function Effects 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
本实用新型公开了一种测量准确的温度传感器，特点是包括隔热的底板、壳体、套管和导热的探棒，壳体与底板固定连接，套管设置在壳体内且与底板固定连接，探棒的一端固定插接在套管中且另一端伸出壳体，探棒的两侧设置有相对称且隔热的弹性板，弹性板与底板固定连接，弹性板与探棒之间固定设置有形状记忆合金弹簧，弹性板上粘贴有电阻应变片，两个电阻应变片的位置沿探棒对称；优点是该温度传感器通过探棒、SMA弹簧与电阻应变片三者的配合来实现温度的测量，其温度敏感性高，抗干扰能力强；而且弹性板和电阻应变片沿探棒对称设置，使得该温度传感器可对测量的误差进行自动纠正，使其具有自动校准功能，增强了测量结果的准确性、稳定性以及可靠性。
The utility model discloses a temperature sensor with accurate measurement, which is characterized in that it comprises a heat-insulating bottom plate, a shell, a sleeve and a heat-conducting probe, the shell is fixedly connected with the bottom plate, and the sleeve is arranged in the shell and fixedly connected with the bottom plate , one end of the probe is fixedly plugged into the casing and the other end protrudes out of the casing. There are symmetrical and heat-insulated elastic plates on both sides of the probe. The elastic plate is fixedly connected to the bottom plate. The gap between the elastic plate and the probe The shape memory alloy spring is fixedly installed, and the resistance strain gauge is pasted on the elastic plate. The positions of the two resistance strain gauges are symmetrical along the probe rod; the advantage is that the temperature sensor is realized by the cooperation of the probe rod, SMA spring and resistance strain gauge. The temperature measurement has high temperature sensitivity and strong anti-interference ability; and the elastic plate and the resistance strain gauge are arranged symmetrically along the probe, so that the temperature sensor can automatically correct the measurement error, so that it has an automatic calibration function, which enhances the Accuracy, stability and reliability of measurement results.
Description
技术领域technical field
本实用新型涉及一种测量准确的温度传感器。The utility model relates to a temperature sensor with accurate measurement.
背景技术Background technique
温度传感器是指能感受温度并转换成可用输出信号的传感器。目前市面上常见的温度传感器主要有电阻式温度传感器和热电偶式温度传感器等，热电偶式温度传感器是将两种不同的金属线相接合，该接合部位被作为感温部(温度检测部)形成，但是由于金属线本身的热传导性低，使得对测定对象的温度测定精度不稳定；而电阻式温度传感器的电阻与温度关系曲线并非完全线性，其测量误差较大。A temperature sensor is a sensor that senses temperature and converts it into a usable output signal. At present, the common temperature sensors on the market mainly include resistance temperature sensors and thermocouple temperature sensors, etc. The thermocouple temperature sensor is to join two different metal wires, and the joint part is used as the temperature sensing part (temperature detection part) However, due to the low thermal conductivity of the metal wire itself, the temperature measurement accuracy of the measurement object is unstable; while the resistance-temperature relationship curve of the resistance temperature sensor is not completely linear, and its measurement error is large.
发明内容Contents of the invention
本实用新型所要解决的技术问题是提供一种测量准确稳定，且适用性较好的温度传感器。The technical problem to be solved by the utility model is to provide a temperature sensor with accurate and stable measurement and good applicability.
本实用新型解决上述技术问题所采用的技术方案为：一种测量准确的温度传感器，包括隔热的底板、壳体、套管和导热的探棒，所述的壳体与所述的底板固定连接，所述的套管设置在所述的壳体内且与所述的底板固定连接，所述的探棒的一端固定插接在所述的套管中且另一端伸出所述的壳体，所述的探棒的两侧设置有相对称且隔热的弹性板，所述的弹性板与所述的底板固定连接，所述的弹性板与所述的探棒之间固定设置有形状记忆合金弹簧，所述的弹性板上粘贴有电阻应变片，两个所述的电阻应变片的位置沿所述的探棒对称。The technical solution adopted by the utility model to solve the above technical problems is: a temperature sensor with accurate measurement, including a heat-insulating bottom plate, a shell, a sleeve and a heat-conducting probe, and the shell is fixed to the bottom plate connected, the casing is set in the casing and fixedly connected with the bottom plate, one end of the probe is fixedly inserted into the casing and the other end extends out of the casing , both sides of the probe are provided with symmetrical and heat-insulated elastic plates, the elastic plate is fixedly connected to the bottom plate, and a shape is fixed between the elastic plate and the probe A memory alloy spring, the elastic plate is pasted with a resistance strain gauge, and the positions of the two resistance strain gauges are symmetrical along the probe rod.
进一步地，所述的套管内设置有内螺纹，所述的探棒的一端设置有外螺纹，所述的探棒的一端插入所述的套管中且与所述的套管螺接固定。Further, the casing is provided with an internal thread, one end of the probe is provided with an external thread, and one end of the probe is inserted into the casing and is screwed and fixed with the casing.
进一步地，所述的底板、所述的壳体、所述的套管和所述的弹性板的材料为隔热材料或表面涂覆有隔热材料。Further, the material of the bottom plate, the shell, the sleeve and the elastic plate is heat insulating material or the surface is coated with heat insulating material.
进一步地，所述的弹性板的材料为轻质铝合金。Further, the material of the elastic plate is light aluminum alloy.
进一步地，所述的探棒的材料为高强、高导热的合金铜。Further, the material of the probe is alloy copper with high strength and high thermal conductivity.
与现有技术相比，本实用新型的优点是该温度传感器通过探棒、SMA弹簧与电阻应变片三者的配合来实现温度的测量，其温度敏感性高，抗干扰能力强，且将温度信号通过电学信号表示，可在外接电路中对结果进行优化，提高测量的准确性，也使得温度传感器智能化、信号数字化；而且弹性板和电阻应变片沿探棒对称设置，使得该温度传感器可对测量的误差进行自动纠正，使其具有自动校准功能，进一步增强了测量结果的准确性、稳定性以及可靠性；此外，通过探棒进行温度传导，其可伸入被测部件的内部，能够对结构内部温度进行监测，也可改变探棒的材料或形状以用于不同设备或部件的温度监测，其适用性较好。Compared with the prior art, the utility model has the advantage that the temperature sensor realizes the temperature measurement through the cooperation of the probe, the SMA spring and the resistance strain gauge. It has high temperature sensitivity, strong anti-interference ability, and the temperature The signal is represented by an electrical signal, which can optimize the result in the external circuit, improve the accuracy of the measurement, and also make the temperature sensor intelligent and the signal digital; and the elastic plate and the resistance strain gauge are arranged symmetrically along the probe, so that the temperature sensor can be The measurement error is automatically corrected, so that it has an automatic calibration function, which further enhances the accuracy, stability and reliability of the measurement results; in addition, the temperature conduction is carried out through the probe, which can extend into the inside of the component under test, which can To monitor the internal temperature of the structure, the material or shape of the probe can also be changed to monitor the temperature of different equipment or components, and its applicability is better.
附图说明Description of drawings
图1为本实用新型的结构示意图。Fig. 1 is the structural representation of the utility model.
具体实施方式Detailed ways
以下结合附图实施例对本实用新型作进一步详细描述。The utility model is described in further detail below in conjunction with the accompanying drawings.
如图所示，一种测量准确的温度传感器，包括隔热的底板1、壳体2、套管3和导热的探棒4，壳体2与底板1通过螺钉固定连接，套管3设置在壳体2内且与底板1固定连接，套管3内设置有内螺纹，探棒4的一端设置有外螺纹，探棒4的一端插入套管3中且与套管3螺接固定，探棒4的另一端伸出壳体2，探棒4的两侧设置有相对称且隔热的弹性板5，弹性板5与底板1固定连接，弹性板5与探棒4之间固定设置有形状记忆合金弹簧（即SMA弹簧）6，弹性板5上粘贴有电阻应变片7，两个电阻应变片7的位置沿探棒4对称。As shown in the figure, a temperature sensor with accurate measurement includes a heat-insulated bottom plate 1, a casing 2, a sleeve 3 and a heat-conducting probe 4. The casing 2 and the bottom plate 1 are fixedly connected by screws, and the casing 3 is set on The casing 2 is fixedly connected with the bottom plate 1, the casing 3 is provided with an internal thread, and one end of the probe 4 is provided with an external thread, and one end of the probe 4 is inserted into the casing 3 and is screwed and fixed with the casing 3. The other end of the rod 4 protrudes from the shell 2, and the two sides of the probe 4 are provided with symmetrical and heat-insulating elastic plates 5, the elastic plate 5 is fixedly connected with the bottom plate 1, and a fixed gap between the elastic plate 5 and the probe 4 is provided. A shape memory alloy spring (that is, SMA spring) 6 and a strain gauge 7 are pasted on the elastic plate 5 , and the positions of the two strain gauges 7 are symmetrical along the probe 4 .
上述实施例中，底板1、壳体2、套管3和弹性板5可在其表面涂覆隔热材料，表面涂覆的隔热材料可以为市售的隔绝传导型隔热涂料或喷漆，底板1、壳体2和套管3的材料也可以为隔热材料，弹性板5的材料为轻质铝合金等，探棒4的材料为高强、高导热的合金铜等。In the above-mentioned embodiment, the bottom plate 1, the casing 2, the casing 3 and the elastic plate 5 can be coated with heat insulating material on their surfaces, and the heat insulating material coated on the surface can be commercially available insulating conductive heat insulating paint or spray paint, The material of base plate 1, shell 2 and casing 3 can also be heat insulating material, the material of elastic plate 5 is light aluminum alloy, etc., and the material of probe 4 is alloy copper with high strength and high thermal conductivity.
上述实施例中，该温度传感器的工作原理为：当需要进行温度监测时，将探棒4顶端接触设备被探测部位或试件内部，将电阻应变片7与外部电路电连接，探棒4将温度传递到形状记忆合金弹簧（SMA弹簧）6上，当SMA弹簧6达到相变温度时，SMA弹簧6收缩，带动弹性板5发生弯曲形变，电阻应变片7的电阻发生改变，进而改变外接电路的电流，实现温度的监测；当监测结束后，将探棒4从被测设备移除，SMA弹簧6的温度逐渐降低而逐渐恢复，电阻应变片7的电阻也同时逐渐恢复，其电流趋于起始值。In the above embodiment, the working principle of the temperature sensor is as follows: when temperature monitoring is required, the tip of the probe 4 is brought into contact with the detected part of the device or inside the test piece, and the resistance strain gauge 7 is electrically connected to the external circuit, and the probe 4 will The temperature is transmitted to the shape memory alloy spring (SMA spring) 6. When the SMA spring 6 reaches the phase transition temperature, the SMA spring 6 contracts, which drives the elastic plate 5 to bend and deform, and the resistance of the strain gauge 7 changes, thereby changing the external circuit When the monitoring is over, the probe 4 is removed from the device under test, the temperature of the SMA spring 6 gradually decreases and gradually recovers, and the resistance of the resistance strain gauge 7 also gradually recovers at the same time, and its current tends to starting value.
Claims (5)
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920111885.0U CN209605964U (en) | 2019-01-23 | 2019-01-23 | An Accurate Temperature Sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109724714A (en) * | 2019-01-23 | 2019-05-07 | 宁波大学 | An accurate temperature sensor |
| CN113281377A (en) * | 2021-05-20 | 2021-08-20 | 中国人民解放军国防科技大学 | Device and method for measuring thermal dose of target object in explosion transient temperature field |
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2019
- 2019-01-23 CN CN201920111885.0U patent/CN209605964U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109724714A (en) * | 2019-01-23 | 2019-05-07 | 宁波大学 | An accurate temperature sensor |
| CN109724714B (en) * | 2019-01-23 | 2024-11-22 | 宁波大学 | A temperature sensor with accurate measurement |
| CN113281377A (en) * | 2021-05-20 | 2021-08-20 | 中国人民解放军国防科技大学 | Device and method for measuring thermal dose of target object in explosion transient temperature field |
| CN113281377B (en) * | 2021-05-20 | 2021-12-10 | 中国人民解放军国防科技大学 | Device and method for measuring thermal dose of target object in explosion transient temperature field |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Yangji Energy Co.,Ltd. Assignor: Ningbo University Contract record no.: X2022980025283 Denomination of utility model: An Accurate Temperature Sensor Granted publication date: 20191108 License type: Common License Record date: 20221207 |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Orange Plastic Technology Co.,Ltd. Assignor: Ningbo University Contract record no.: X2023330000365 Denomination of utility model: A Temperature Sensor with Accurate Measurement Granted publication date: 20191108 License type: Common License Record date: 20230630 |
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| EE01 | Entry into force of recordation of patent licensing contract |