CN220819265U - Isotropic pressure sensor structure - Google Patents
Isotropic pressure sensor structure Download PDFInfo
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- CN220819265U CN220819265U CN202322645909.XU CN202322645909U CN220819265U CN 220819265 U CN220819265 U CN 220819265U CN 202322645909 U CN202322645909 U CN 202322645909U CN 220819265 U CN220819265 U CN 220819265U
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- pressure sensor
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- 239000004020 conductor Substances 0.000 claims abstract description 44
- 230000007704 transition Effects 0.000 claims description 18
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims 2
- 238000009434 installation Methods 0.000 description 8
- 238000009530 blood pressure measurement Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
The isotropic pressure sensor structure is characterized by comprising a strain body for attaching the strain sheet, wherein two ends of the strain body are respectively embedded on a bowl edge of a bowl-shaped isotropic strain conductor, a cavity is formed between the bottom surface of the strain body and the bowl inner bottom surface of the bowl-shaped isotropic strain conductor, the top surface center of the strain body is connected with the bottom surface center of the bowl-shaped isotropic strain conductor through a fastening piece which is penetrated, the bottom surface of the bowl-shaped isotropic strain conductor is a pressure bearing surface to be measured, the bottom surface of the bowl-shaped isotropic strain conductor is an isotropic sensing pressure output surface, and two ends of the strain body are isotropic sensing pressure acting ends.
Description
Technical Field
The invention relates to the technical field of pressure sensors, in particular to an isotropic pressure sensor structure.
Background
In a conventional pressure sensor structure, a strain gauge or a pressure film and the like are required to be attached to an object to be measured, and the strain gauge or the pressure film and the like are ensured to keep a correct angle with the deformation direction of the object to be measured, so that the pressure can be measured. However, this conventional structure has high demands on the installation of strain gages or pressure membranes and the like, in particular, the direction. Referring to fig. 1, a pressure to be measured is applied to an object to be measured, causing the object to be measured to deform as shown. The strain gage must be mounted in the orientation shown. If rotated 90 degrees, deformation or pressure cannot be measured at all. The pressure sensor comprises a pressure object to be measured, a strain gauge and a control device, wherein the pressure object to be measured is supported by a lower fulcrum in fig. 1, the strain gauge is attached to the upper surface of the pressure object to be measured, a double-headed arrow line on the strain gauge is the deformation sensing direction, namely the length direction, of the strain gauge, and the deformation sensing direction and the deformation direction of the pressure object to be measured are kept consistent to realize accurate pressure measurement.
Disclosure of Invention
Aiming at the defects or shortcomings in the prior art, the invention provides the isotropic pressure sensor structure which can conduct deformation of an object to be measured to the strain gauge on the premise of not requiring the strain gauge and the like to be aligned with the deformation direction of the object to be measured, thereby simplifying the installation of the pressure sensor and ensuring that the pressure measurement is simpler, easier to use and easier to maintain.
The technical scheme of the invention is as follows:
The isotropic pressure sensor structure is characterized by comprising a strain body for attaching a strain sheet, wherein two ends of the strain body are respectively embedded on a bowl edge of a bowl-shaped isotropic strain conductor, a separation cavity is formed between the bottom surface of the strain body and the bowl inner bottom surface of the bowl-shaped isotropic strain conductor, the top surface center of the strain body is connected with the bottom surface center of the bowl-shaped isotropic strain conductor through a fastener which penetrates through the bottom surface center of the bowl-shaped isotropic strain conductor, the bottom surface of the bowl-shaped isotropic strain conductor is a pressure bearing surface to be measured, the bowl edge bottom surface of the bowl-shaped isotropic strain conductor is an isotropic sensing pressure output surface, and two ends of the strain body are isotropic sensing pressure acting ends.
The bowl edge of the bowl-shaped isotropic strain conductor is provided with a protective shell, and the center of the top surface of the protective shell is provided with a center hole through which the fastener penetrates.
The bowl edge of the bowl-shaped isotropic strain conductor is round.
And the part of the fastener extending out of the bottom surface of the bowl-shaped isotropic strain conductor is connected with a mounting fixing piece.
The installation fixing piece is connected with the fixing base, and the upper surface of the fixing base is contacted with the bottom surface of the bowl-shaped isotropic strain conductor.
The installation fixing piece is sequentially connected with the fixing base and the pressure object to be measured from bottom to top, and the upper surface of the pressure object to be measured is contacted with the bottom surface of the bowl-shaped isotropic strain conductor.
The strain body is provided with a thicker middle table, a left transition section is formed in a gradually shrinking mode from the left side to the left side of the thicker middle table, a thinner left side table is extended from the left transition section to the left side, a right transition section is formed in a gradually shrinking mode from the right side to the right side of the thicker middle table, a thinner right side table is extended from the right transition section to the right side, and the thinner left side table and the thinner right side table are isotropic sensing pressure acting ends.
Strain gauges are attached to the upper surface of the left transition section and the upper surface of the right transition section.
The invention has the following technical effects: the isotropic pressure sensor structure is formed by optimizing the mounting modes of the strain gauge, the pressure film and the like and mounting the strain gauge, the pressure film and the like on an isotropic switching mechanism. The isotropic pressure sensor structure can conduct deformation of an object to be measured to the strain gauge or the pressure film and the like on the premise that the strain gauge or the pressure film and the like are not required to be strictly aligned with the deformation direction of the object to be measured, so that the installation of the pressure sensor structure is simplified, and the pressure sensor structure is simpler to use, easy to use and easy to maintain.
Drawings
FIG. 1 is a schematic diagram of a prior art strain gauge pressure sensing configuration. The pressure sensor comprises a pressure object to be measured, a strain gauge and a control device, wherein the pressure object to be measured is supported by a lower fulcrum in fig. 1, the strain gauge is attached to the upper surface of the pressure object to be measured, a double-headed arrow line on the strain gauge is the deformation sensing direction, namely the length direction, of the strain gauge, and the deformation sensing direction and the deformation direction of the pressure object to be measured are kept consistent to realize accurate pressure measurement.
FIG. 2 is an assembled schematic view of the isotropic pressure sensor structure of the present invention.
Fig. 3 is a schematic structural view of the isotropic pressure sensor structure of the present invention.
Fig. 4 is a schematic view of a first force measurement scenario of the isotropic pressure sensor structure of the invention.
Fig. 5 is a schematic diagram of a second force-measuring scenario of the isotropic pressure sensor structure of the invention.
The reference numerals are listed below: 1-strain gauge (or pressure film, etc.); 2-strain variants; 3-bowl-shaped isotropic strain conductor; 4-a fastener; 5-mounting a fixing piece; 6-protecting shell; 10-isotropic pressure sensor structure; 20-an object to be tested for pressure; 30-measuring the pressure; 31-isotropy sensing pressure; 40-fixing the base.
Detailed Description
The invention will be described with reference to the accompanying drawings (figures 1-5).
FIG. 1 is a schematic diagram of a prior art strain gauge pressure sensing structure that can be visually compared with the isotropic pressure sensor structure of the present invention to facilitate understanding of the structural differences therebetween. FIG. 2 is an assembled schematic view of the isotropic pressure sensor structure of the present invention. Fig. 3 is a schematic structural view of the isotropic pressure sensor structure of the present invention. Fig. 4 is a schematic view of a first force measurement scenario of the isotropic pressure sensor structure of the invention. Fig. 5 is a schematic diagram of a second force-measuring scenario of the isotropic pressure sensor structure of the invention. Referring to fig. 2 to 5, the isotropic pressure sensor structure comprises a strain body 2 for attaching a strain gauge 1, two ends of the strain body 2 are respectively embedded on bowl edges of a bowl-shaped isotropic strain conductor 3, a separation cavity is formed between the bottom surface of the strain body 2 and the bowl inner bottom surface of the bowl-shaped isotropic strain conductor 3, the top surface center of the strain body 2 is connected with the bottom surface center of the bowl-shaped isotropic strain conductor 3 through a fastener 4 penetrated through, the bottom surface of the bowl-shaped isotropic strain conductor 3 is a pressure 30 bearing surface to be measured, the bowl-shaped bottom surface of the bowl-shaped isotropic strain conductor 3 is an isotropic sensing pressure 31 output surface, and two ends of the strain body 2 are isotropic sensing pressure acting ends.
A protective shell 6 is arranged on the bowl edge of the bowl-shaped isotropic strain conductor 3, and a central hole through which the fastener 4 penetrates is formed in the center of the top surface of the protective shell 6. The bowl edge of the bowl-shaped isotropic strain conductor 3 is circular. The part of the fastener 4 extending out of the bottom surface of the bowl-shaped isotropic strain conductor 3 is connected with a mounting fixture 5. The mounting fixture 5 is connected to a fixing base 40, and the upper surface of the fixing base 40 is in contact with the bottom surface of the bowl-shaped isotropic strain conductor 3. The mounting fixture 5 is sequentially connected with the fixing base 40 and the pressure object 20 to be measured from bottom to top, and the upper surface of the pressure object 20 to be measured is contacted with the bottom surface of the bowl-shaped isotropic strain conductor 3.
The strain body 2 is provided with a thicker middle stage, a left transition section is formed in a gradually shrinking mode from the left side to the left side of the thicker middle stage, a thinner left side stage is extended from the left transition section to the left side, a right transition section is formed in a gradually shrinking mode from the right side to the right side of the thicker middle stage, a thinner right side stage is extended from the right transition section to the right side, and the thinner left side stage and the thinner right side stage are isotropic sensing pressure acting ends. The upper surface of the left transition section and the upper surface of the right transition section are respectively attached with a strain gauge 1.
The invention is characterized in that the isotropic pressure sensor structure 10 transmits pressure to the strain body 2 through the bowl-shaped isotropic strain conductor 3, and then the strain gauge 1 on the strain body 2 measures the pressure, thereby eliminating the strict requirements of the conventional pressure sensor (refer to fig. 1) on the pasting direction of the strain gauge, and finally simplifying the installation and the use of the pressure sensor.
The technical description of the invention is as follows:
1. the strain gage 1 (or pressure film or the like) is adhered to the strain body 2.
2. The pressure sensor structure fastener 4 and the pressure sensor structure mounting fixture 5 fasten the pressure sensor structure protective shell 6 and the strain body 2 on the bowl-shaped isotropic strain conductor 3. A deformation allowance of the strain body 2 is reserved between the strain body 2 and the protective shell 6.
3. In use, the isotropic pressure sensor structure 10 is secured to the pressure object 20 or the fixture base 40 to be measured by the pressure sensor structure mounting fixture 5. The pressure to be measured 30 between the pressure object 20 to be measured or the fixed base 40 and the bowl-shaped isotropic strain conductor 3 is conducted to the strain body 2 through the bowl-shaped isotropic strain conductor 3, and the strain body 2 is caused to generate pressure and deformation (namely isotropic sensing pressure 31) corresponding to the pressure to be measured 30, and finally the pressure to be measured is measured through the strain gauge 1 or the pressure film, and the value of the pressure to be measured 30 is converted.
4. Since the strain body 2 measures the pressure of the lower surface of the strain body through the bowl-shaped isotropic strain conductor 3, the pressure from any direction of the lower surface of the strain body is conducted to the strain body 2 through the round edge of the bowl-shaped isotropic strain conductor 3, so that the requirement on the pressure direction of the strain gauge 1 during installation is reduced, and accurate pressure measurement or deformation measurement is realized through isotropy established on the pressure strain.
Fig. 4 illustrates one of the isotropic pressure sensor structure mounting scenarios, where the pressure sensor is mounted directly onto a stationary base (or base), and the firmness of the stationary base is monitored by detecting changes in the pressure sensor measurements.
Fig. 5 illustrates a second installation scenario of an isotropic pressure sensor structure, where a pressure object to be measured is fixed on a fixed base (or base), and a pressure sensor is fixed on the pressure object to be measured, where the pressure sensor can measure the pressure generated by deformation of the pressure object to be measured 20 (elastomer to be measured).
What is not described in detail in this specification is prior art known to those skilled in the art. It is noted that the above description is helpful for a person skilled in the art to understand the present invention, but does not limit the scope of the present invention. Any and all such equivalent substitutions, modifications and/or deletions as may be made without departing from the spirit and scope of the invention.
Claims (8)
1. The isotropic pressure sensor structure is characterized by comprising a strain body for attaching a strain sheet, wherein two ends of the strain body are respectively embedded on a bowl edge of a bowl-shaped isotropic strain conductor, a separation cavity is formed between the bottom surface of the strain body and the bowl inner bottom surface of the bowl-shaped isotropic strain conductor, the top surface center of the strain body is connected with the bottom surface center of the bowl-shaped isotropic strain conductor through a fastener which penetrates through the bottom surface center of the bowl-shaped isotropic strain conductor, the bottom surface of the bowl-shaped isotropic strain conductor is a pressure bearing surface to be measured, the bowl edge bottom surface of the bowl-shaped isotropic strain conductor is an isotropic sensing pressure output surface, and two ends of the strain body are isotropic sensing pressure acting ends.
2. An isotropic pressure sensor structure according to claim 1, wherein a protective shell is provided on the bowl rim of the bowl-shaped isotropic strain conductor, the top center of the protective shell being provided with a central hole through which the fastener is threaded.
3. An isotropic pressure sensor structure according to claim 1, wherein the bowl rim of the bowl-shaped isotropic strain conductor is circular.
4. An isotropic pressure sensor structure according to claim 1, where the portion of the fastener extending beyond the bottom surface of the bowl-shaped isotropic strain conductor is attached to a mounting fixture.
5. The isotropic pressure sensor structure of claim 4, wherein said mounting fixture is attached to a stationary base, an upper surface of said stationary base being in contact with a bottom surface of said bowl-shaped isotropic strain conductor.
6. The isotropic pressure sensor structure according to claim 4, wherein the mounting fixture is sequentially connected with the fixing base and the pressure object to be measured from bottom to top, and an upper surface of the pressure object to be measured is in contact with a bottom surface of the bowl-shaped isotropic strain conductor.
7. The isotropic pressure sensor structure of claim 1, wherein the strain body has a thicker middle stage, the thicker middle stage left side forming a left transition section in a gradual contraction manner, the left transition section extending leftwardly beyond a thinner left stage, the thicker middle stage right side forming a right transition section in a gradual contraction manner, the right transition section extending rightwardly beyond a thinner right stage, both the thinner left stage and the thinner right stage being isotropic sensing pressure applying ends.
8. The isotropic pressure sensor structure of claim 7, wherein strain gages are attached to both the upper surface of the left transition segment and the upper surface of the right transition segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322645909.XU CN220819265U (en) | 2023-09-27 | 2023-09-27 | Isotropic pressure sensor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322645909.XU CN220819265U (en) | 2023-09-27 | 2023-09-27 | Isotropic pressure sensor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220819265U true CN220819265U (en) | 2024-04-19 |
Family
ID=90674209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322645909.XU Active CN220819265U (en) | 2023-09-27 | 2023-09-27 | Isotropic pressure sensor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220819265U (en) |
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2023
- 2023-09-27 CN CN202322645909.XU patent/CN220819265U/en active Active
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