CN216978189U - Pressure sensor and detection device - Google Patents
Pressure sensor and detection device Download PDFInfo
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- CN216978189U CN216978189U CN202123455279.7U CN202123455279U CN216978189U CN 216978189 U CN216978189 U CN 216978189U CN 202123455279 U CN202123455279 U CN 202123455279U CN 216978189 U CN216978189 U CN 216978189U
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- pressure sensor
- dynamic
- piezoelectric film
- elastic body
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- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 230000003068 static effect Effects 0.000 claims abstract description 18
- 229920001971 elastomer Polymers 0.000 claims abstract description 10
- 239000000806 elastomer Substances 0.000 claims abstract description 6
- 230000008878 coupling Effects 0.000 claims abstract description 3
- 238000010168 coupling process Methods 0.000 claims abstract description 3
- 238000005859 coupling reaction Methods 0.000 claims abstract description 3
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 4
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 4
- -1 polydimethylsiloxane Polymers 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 230000001939 inductive effect Effects 0.000 claims description 3
- 239000000839 emulsion Substances 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 2
- 210000000707 wrist Anatomy 0.000 description 10
- 238000012544 monitoring process Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000036541 health Effects 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009532 heart rate measurement Methods 0.000 description 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
A pressure sensor and detection device, the pressure sensor includes the elastomer, it has first connection surface and second connection surface; a dynamic pressure sensor coupled to the first coupling face for measuring dynamic changes in a force acting on the pressure sensor; a static pressure sensor connected to the second connection surface for measuring a static force exerted on the pressure sensor; compared with the prior art, the dynamic pressure sensor is connected with the static pressure sensor through the elastic body, and a deformable space is provided for deformation of the dynamic pressure sensor, so that the pressure sensor can be attached to a non-flat surface, and the detection sensitivity and the detection precision are improved; and when the external force action is stopped, the elastic body can help the dynamic pressure sensor to quickly restore to the initial state so as to prepare for the next detection.
Description
Technical Field
The utility model relates to the technical field of pressure sensors, in particular to a pressure sensor and a detection device.
Background
The pulse can reflect the health degree of a human body and various diseases, and generally a pressure sensor, an ultrasonic sensor, a photoelectric sensor and the like are used for realizing non-invasive pulse measurement. However, the mainstream method for measuring the pulse is still to measure the pulse by using the pressure sensor. At present, pulse acquisition is carried out on the wrist by partial equipment through a film piezoresistive pressure sensor, the sensor is difficult to be well attached to the wrist due to the limitation of materials, and the sensitivity is limited by a measuring range.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a pressure sensor and a detection device, and aims to solve the problem of how to better measure wrist pulse in the prior art.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
the present invention provides a pressure sensor comprising: an elastic body having a first connection face and a second connection face; a dynamic pressure sensor coupled to the first coupling face for measuring dynamic changes in a force applied to the pressure sensor; a static pressure sensor, connected to the second connection surface, for measuring a static pressure exerted on the pressure sensor.
Compared with the prior art, the dynamic pressure sensor is connected with the static pressure sensor through the elastic body, and a deformable space is provided for deformation of the dynamic pressure sensor, so that the pressure sensor can be better attached to a non-flat surface (such as a human wrist), and the detection sensitivity and the detection precision are improved; and when the external force is stopped, the elastic body can help the dynamic pressure sensor to quickly restore to the initial state so as to prepare for the next detection.
In a preferred embodiment, the dynamic pressure sensor comprises: a piezoelectric film; a first electrode connected to a detection surface of the piezoelectric film; and the second electrode is positioned between the elastic body and the piezoelectric film, and is connected with the bonding surface of the piezoelectric film.
In a preferred embodiment, the piezoelectric film is arranged to be flexibly deformable.
In a preferred embodiment, the static pressure sensor comprises one of a piezoresistive force sensor, a capacitive force sensor and an inductive force sensor.
In a preferred embodiment, the elastomer comprises a rubber body, a sponge body, an emulsion body or a polydimethylsiloxane body.
In a preferred embodiment, a substrate is further disposed between the elastomer and the dynamic pressure sensor.
The utility model also provides a detection device which comprises the pressure sensor.
For a better understanding and practice, the following drawings are included to describe the utility model in detail.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:
fig. 1 is a schematic structural view of a pressure sensor.
Description of reference numerals:
100-elastomer, 200-dynamic pressure sensor, 210-first electrode, 220-piezoelectric film, 230-second electrode, 240-substrate, 300-static pressure sensor.
Detailed Description
In order to better illustrate the utility model, the utility model is described in further detail below with reference to the accompanying drawings.
It should be understood that the embodiments described are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the embodiments in the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims. In the description of the present application, it is to be understood that the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not necessarily used to describe a particular order or sequence, nor are they to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Further, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
In the description of the present invention, it is to be understood that the terms "vertical", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the scope of the present invention.
The utility model provides a pressure sensor and a detection device, wherein the detection device can be a pulse detection device which acts on the wrist of a human body and is used for monitoring and measuring the pulse of the wrist, and can also be a bridge detection device which is used for monitoring and measuring the vibration of a bridge.
Specifically, as shown in fig. 1, the pressure sensor includes: an elastic body 100 having a first connection face and a second connection face; a dynamic pressure sensor 200 connected to the first connection face for measuring dynamic changes in the force exerted on the pressure sensor; a static pressure sensor 300, which is connected to the second connection surface, for measuring a static pressure exerted on the pressure sensor.
The dynamic pressure sensor 200 is connected with the static pressure sensor 300 through the elastic body 100, and a deformable space is provided for deformation of the dynamic pressure sensor 200, so that the pressure sensor can be better attached to an uneven surface (such as a human wrist), and the detection sensitivity and the detection precision are improved; and when the external force is stopped, the elastic body 100 can help the dynamic pressure sensor 200 to quickly return to the initial state to prepare for the next detection.
In one embodiment, the dynamic pressure sensor 200 includes: a piezoelectric film; a first electrode 210 connected to a detection surface of the piezoelectric film; a second electrode 230 located between the elastic body 100 and the piezoelectric film, wherein the second electrode 230 is connected to a bonding surface of the piezoelectric film; the utility model utilizes the deformable characteristic of the piezoelectric film, so that the dynamic pressure sensor 200 can be better attached to an uneven surface (such as the wrist of a person), thereby improving the detection precision. Specifically, the piezoelectric film deforms under the action of the force F1, so that a change of electric charges is generated on the surface, and the change of the force F1 can be obtained by monitoring the output electric signals of the piezoelectric film through the first electrode 210 and the second electrode 230.
Since the response time of piezoelectric films is typically on the order of microseconds (μ s), whereas typical force sensor response times are on the order of milliseconds (ms). Compared with the prior art, the composite pressure sensor can simulate the traditional Chinese medicine pulse feeling mode, and clearly records the slight change of a pulse signal in a beating period (about 0.5 s-1 s) under the condition of specified pressure, so that the accurate diagnosis of the human health is realized through signal analysis.
Further, the piezoelectric film is a lead zirconate titanate (PZT) piezoelectric film and has a bending deformation characteristic.
In one embodiment, the static pressure sensor 300 is a piezoresistive force sensor, when a pressurizing device is applied to the pressure sensor by the outside to apply a static pressure F2, the static pressure sensor 300 senses the static pressure F2, and finally the pulse signals are detected at different pressures F2. The static pressure sensor may also be one of a capacitive force sensor or an inductive force sensor.
Wherein the pressurizing means comprises an inflatable bandage, or an inflatable balloon or the like.
In one embodiment, the elastic body 100 comprises a rubber body, a sponge body, a latex body or a polydimethylsiloxane body, and the elastic body 100 is made of any one of the rubber body, the sponge body, the latex body or the polydimethylsiloxane body, so as to provide a deformable space for deformation of the dynamic pressure sensor 200 and help the dynamic pressure sensor 200 to reset.
In a preferred embodiment, a substrate 240 is further disposed between the elastomer 100 and the dynamic pressure sensor 200.
The utility model also provides a detection device, which comprises the pressure sensor; the detection device can be a pulse detection device, acts on the wrist of a human body, and is used for monitoring and measuring the pulse of the wrist, and can also be a bridge detection device used for monitoring and measuring the vibration of a bridge.
If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the use of "first" and "second" is merely for convenience in describing the utility model and to simplify the description, and unless otherwise stated the above words are not intended to have a special meaning.
The present invention is not limited to the above-described embodiments, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.
Claims (7)
1. A pressure sensor, comprising:
an elastic body having a first connection face and a second connection face;
a dynamic pressure sensor coupled to the first coupling face for measuring dynamic changes in a force applied to the pressure sensor;
a static pressure sensor connected to the second connection surface for measuring a static pressure applied to the pressure sensor.
2. The pressure sensor of claim 1, wherein the dynamic pressure sensor comprises: a piezoelectric film;
a first electrode connected to a detection surface of the piezoelectric film;
and the second electrode is positioned between the elastic body and the piezoelectric film, and is connected with the bonding surface of the piezoelectric film.
3. The pressure sensor of claim 2, wherein:
the piezoelectric film is arranged to be flexibly deformed.
4. The pressure sensor of claim 1, wherein:
the static pressure sensor is one of a piezoresistive force sensor, a capacitive force sensor or an inductive force sensor.
5. The pressure sensor of claim 1, wherein:
the elastomer comprises a rubber body, a sponge body, an emulsion body or a polydimethylsiloxane body.
6. The pressure sensor of claim 1, wherein:
and a substrate is arranged between the elastic body and the dynamic pressure sensor.
7. A test device comprising a pressure sensor according to any of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123455279.7U CN216978189U (en) | 2021-12-31 | 2021-12-31 | Pressure sensor and detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123455279.7U CN216978189U (en) | 2021-12-31 | 2021-12-31 | Pressure sensor and detection device |
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| Publication Number | Publication Date |
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| CN216978189U true CN216978189U (en) | 2022-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123455279.7U Active CN216978189U (en) | 2021-12-31 | 2021-12-31 | Pressure sensor and detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117433668A (en) * | 2023-12-08 | 2024-01-23 | 深圳市鑫精诚传感技术有限公司 | Composite force measuring sensor and force measuring method thereof |
-
2021
- 2021-12-31 CN CN202123455279.7U patent/CN216978189U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117433668A (en) * | 2023-12-08 | 2024-01-23 | 深圳市鑫精诚传感技术有限公司 | Composite force measuring sensor and force measuring method thereof |
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