CN204286741U - The platinum resistance heat flux sensor of serpentine film - Google Patents
The platinum resistance heat flux sensor of serpentine film Download PDFInfo
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- CN204286741U CN204286741U CN201420778895.7U CN201420778895U CN204286741U CN 204286741 U CN204286741 U CN 204286741U CN 201420778895 U CN201420778895 U CN 201420778895U CN 204286741 U CN204286741 U CN 204286741U
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Abstract
The utility model provides a kind of platinum resistance heat flux sensor of serpentine film, it comprises: platinum resistance film, substrate, silver slurry lead-in wire, insulation gummed paper and wire, described substrate is cylindrical glass rod, described platinum resistance film is attached on an end face of described cylindrical glass rod by the method for ion beam sputtering deposition, described platinum resistance film is serpentine, utilize the method for manually retouching painting to be coated with two described silver slurry lead-in wires symmetrically in the side of described substrate, article two, the respective one end of described silver slurry lead-in wire overlaps with serpentine platinum resistance film respectively, the respective other end is welded to connect described wire respectively, described insulating gel paper bag is rolled in and scribbles on described silver-colored described side of starching lead-in wire.The resistance of sensor of the present utility model is large, highly sensitive, strong to the antijamming capability of wind tunnel noise, and little heat flow province measuring accuracy is improved.
Description
Technical field
The utility model relates to a kind of for model in wind tunnel surface heat flow measurement mechanism, particularly a kind of platinum resistance heat flux sensor of the serpentine film for shock tunnel Aerodynamic Heating environmental test.。
Background technology
Along with the development of aerospacecraft, the Aerodynamic Heating problem in hypersonic aircraft flight course becomes increasingly conspicuous.The measuring technique of based thin film platinum resistance heat flux sensor, as a kind of important method of Aerodynamic Heating environment measurement in shock tunnel, obtained development in recent years.On the one hand, in order to unit area obtains more data, the integrated trend becoming Sensor Technology Development.On the other hand, in order to meet the measurement requirement in different Mach number, different measuring region, require the highly sensitive of sensor, and due to size sensor little, the resistance of film platinum resistor is less, therefore cause sensor to occur that error is comparatively large at low hot-fluid area measure, need to increase the resistance of the resistive element of sensor, improve the output quantity of sensor.Current film platinum resistor resistance of sensor is less, and in low heat flow measurement process, output quantity is too little, causes measuring accuracy not enough.
Summary of the invention
In order to realize in shock tunnel thermal environmental test, the high-acruracy survey of model low heat flux regions thermal environment.The utility model provides a kind of platinum resistance heat flux sensor of serpentine film, is improved the resistance of platinum resistive element by the shape changing film, thus realizes large, the jamproof ability of signal output.
The platinum resistance heat flux sensor of serpentine film of the present utility model comprises: platinum resistance film, substrate, silver slurry lead-in wire, insulation gummed paper and wire, described substrate is cylindrical glass rod, described platinum resistance film is attached on an end face of described cylindrical glass rod by the method for ion beam sputtering deposition, described platinum resistance film is serpentine, utilize the method for manually retouching painting to be coated with two described silver slurry lead-in wires symmetrically in the side of described substrate, article two, the respective one end of described silver slurry lead-in wire overlaps with serpentine platinum resistance film respectively, the respective other end is welded to connect described wire respectively, described insulating gel paper bag is rolled in and scribbles on described silver-colored described side of starching lead-in wire.
The cylindrical glass rod of preferred described substrate to be diameter be 2mm.
Preferred described platinum resistance sheet resistance is 50 ± 10 ohm.
The beneficial effects of the utility model are: in shock tunnel thermal environmental test process, during little hot-fluid for measurement model lee face etc., because the resistance of this kind of sensor is large, highly sensitive, strong to the antijamming capability of wind tunnel noise, little heat flow province measuring accuracy is improved.
Accompanying drawing explanation
Fig. 1 is the platinum resistance heat flux sensor structural drawing of the utility model serpentine film.
Fig. 2 is the schematic diagram of platinum resistance film shape.
Embodiment
As shown in Figure 1 and Figure 2, the platinum resistance heat flux sensor of serpentine film of the present utility model comprises: platinum resistance film 1, substrate 2, silver slurry lead-in wire 3 insulate gummed paper 4 and wire 5.
The cylindrical glass rod of substrate 2 to be diameters be 2mm, platinum resistance film 1 is attached on an end face of substrate 2 by the method for ion beam sputtering deposition.Namely, design new mask, by changing the shape at plated film small opening place on mask, original " one " font is replaced with serpentine, adopt ion beam sputter depositing method on substrate end face 21, deposit serpentine platinum resistance film 1, other filming parameters are constant, and the length of original plated film lines in unit area is increased, width, thickness are constant, realize the increase of platinum resistance resistance with this.The resistance value of serpentine platinum resistance film 1 can remain on 50 ± 10 ohm.Mask lines change after, easily cause the phenomenon that plated film is apprehensive, make the width of plated film lines, thickness be not easy ensure, by designing new plated film frock, the problem that plated film is apprehensive can be solved, making serpentine film platinum resistor dimensionally stable, resistance stablize.Utilize frock, mask and its film of plated film time controling is long, film is wide and thickness, increase platinum resistance resistance, the sensitivity of sensor is improved.
Utilize the method for manually retouching painting to spread upon on the side of substrate 2 by two bullions slurry lead-in wire 3 symmetries, by certain heat treatment process, silver slurry is solidified in substrate 2 and adhere to firm.One end that two bullion slurry lead-in wires 3 are respective and serpentine platinum resistance film 1 overlap.Article two, the other end that wire 5 starches lead-in wire 3 with two bullions is respectively welded to connect, as sensor lead.Thus platinum resistance film 1, silver slurry lead-in wire 3 and wire 5 are connected.Because silver slurry lead-in wire 3 is exposed, and to glued joint with model in sensor use procedure, therefore need to draw the peripheral wrap insulate gummed paper 4 of slurry lead-in wire 3 at sensor, when preventing from using and model short circuit, thus realize simple and easy encapsulation.
Above preferred implementation of the present utility model is illustrated, but the utility model is not limited to above-described embodiment.To one skilled in the art, in the category described in claims, various modification or fixed case can be expected apparently, certainly also belong to technology category of the present utility model.
Claims (3)
1. a platinum resistance heat flux sensor for serpentine film, is characterized in that, comprising: platinum resistance film, substrate, silver slurry lead-in wire, insulation gummed paper and wire,
Described substrate is cylindrical glass rod, described platinum resistance film is attached on an end face of described cylindrical glass rod by the method for ion beam sputtering deposition, described platinum resistance film is serpentine, utilize the method for manually retouching painting to be coated with two described silver slurry lead-in wires symmetrically in the side of described substrate, article two, the respective one end of described silver slurry lead-in wire overlaps with serpentine platinum resistance film respectively, the respective other end is welded to connect described wire respectively, and described insulating gel paper bag is rolled in and scribbles on described silver-colored described side of starching lead-in wire.
2. the platinum resistance heat flux sensor of serpentine film according to claim 1, is characterized in that: the cylindrical glass rod of described substrate to be diameter be 2mm.
3. the platinum resistance heat flux sensor of serpentine film according to claim 1, is characterized in that: described platinum resistance sheet resistance is 50 ± 10 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420778895.7U CN204286741U (en) | 2014-12-10 | 2014-12-10 | The platinum resistance heat flux sensor of serpentine film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420778895.7U CN204286741U (en) | 2014-12-10 | 2014-12-10 | The platinum resistance heat flux sensor of serpentine film |
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| CN204286741U true CN204286741U (en) | 2015-04-22 |
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| CN201420778895.7U Active CN204286741U (en) | 2014-12-10 | 2014-12-10 | The platinum resistance heat flux sensor of serpentine film |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931229A (en) * | 2015-06-12 | 2015-09-23 | 中国航天空气动力技术研究院 | Integrated thin film sensor for measuring surface heat flow rate in hypersonic flow |
| CN105606331A (en) * | 2015-12-18 | 2016-05-25 | 中国航天空气动力技术研究院 | Film platinum resistor heat flux sensor with flexible substrate, and manufacturing method for film platinum resistor heat flux sensor |
| CN108444378A (en) * | 2018-01-30 | 2018-08-24 | 中国科学院力学研究所 | A kind of resistance strain |
-
2014
- 2014-12-10 CN CN201420778895.7U patent/CN204286741U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931229A (en) * | 2015-06-12 | 2015-09-23 | 中国航天空气动力技术研究院 | Integrated thin film sensor for measuring surface heat flow rate in hypersonic flow |
| CN105606331A (en) * | 2015-12-18 | 2016-05-25 | 中国航天空气动力技术研究院 | Film platinum resistor heat flux sensor with flexible substrate, and manufacturing method for film platinum resistor heat flux sensor |
| CN108444378A (en) * | 2018-01-30 | 2018-08-24 | 中国科学院力学研究所 | A kind of resistance strain |
| CN108444378B (en) * | 2018-01-30 | 2024-03-15 | 中国科学院力学研究所 | Resistance type strain sensor |
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