CN215778016U - Pressure sensor, pressure detection device and fetal monitoring probe - Google Patents
Pressure sensor, pressure detection device and fetal monitoring probe Download PDFInfo
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- CN215778016U CN215778016U CN202120688085.2U CN202120688085U CN215778016U CN 215778016 U CN215778016 U CN 215778016U CN 202120688085 U CN202120688085 U CN 202120688085U CN 215778016 U CN215778016 U CN 215778016U
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Abstract
The application discloses pressure sensor, pressure measurement and child monitor probe relates to medical equipment technical field. The pressure sensor is used for a pressure detection device, and comprises: the base plate comprises a main body part and a sensing part which are integrally arranged, the sensing part is provided with a first mounting part, the first mounting part is used for mounting a connecting piece, the sensing part is fixedly connected with a transmission part of the pressure detection device through the connecting piece so as to sense pressure from the transmission part, and a breaking groove is arranged between the sensing part and the main body part so that the sensing part deforms relative to the main body part under the action of the pressure; and the pressure detection piece is arranged on the sensing part and used for sensing deformation and converting the deformation into an electric signal. Through this kind of mode, can improve pressure sensor, pressure measurement and child monitor probe's detection precision.
Description
Technical Field
The application relates to the technical field of medical equipment, in particular to a pressure sensor, a pressure detection device and a fetal monitoring probe.
Background
Pressure measurement frequently is used for carrying out palace constriction pressure to the pregnant woman and detects, is equipped with pressure sensor in the pressure measurement, but this kind of pressure measurement on the market all is with driving medium and pressure sensor butt to transmit the pressure on the driving medium for pressure sensor.
The inventor of the present application found in long-term research and development work that, along with changes in working environment or aging of the pressure detection device, poor contact between the transmission member and the pressure sensor occurs, resulting in inaccurate pressure detection.
The pressure sensor is fixed on the shell of the fetal monitor accessory in an I shape, a T shape or an I shape through a mounting rack, and a signal wire of the pressure sensor is led into the board card; the pressure sensor has larger size and appearance, and the fixing mode of the pressure sensor requires larger space, so that the volume of the fetal monitoring probe is increased, and the use of a user is inconvenient.
SUMMERY OF THE UTILITY MODEL
The main technical problem who solves of this application is how to improve pressure sensor, pressure measurement and child monitoring probe's detection precision.
In order to solve the technical problem, the application adopts a technical scheme that: a pressure sensor is provided. The pressure sensor is used for a pressure detection device, and comprises: the base plate comprises a main body part and a sensing part which are integrally arranged, the sensing part is provided with a first mounting part, the first mounting part is used for mounting a connecting piece, the sensing part is fixedly connected with a transmission part of the pressure detection device through the connecting piece so as to sense pressure from the transmission part, and a breaking groove is arranged between the sensing part and the main body part so that the sensing part deforms relative to the main body part under the action of the pressure; and the pressure detection piece is arranged on the sensing part and used for sensing deformation and converting the deformation into an electric signal.
In order to solve the above technical problem, another technical solution adopted by the present application is: a pressure detection device is provided. The pressure detection device comprises a circuit board and the pressure sensor, wherein the circuit board is provided with an embedding hole, a main body part and the circuit board are fixed in an attaching mode and cover the embedding hole, and a sensing part deforms relative to the main body part towards the direction of the embedding hole under the action of pressure.
In order to solve the above technical problem, another technical solution adopted by the present application is: a fetal monitoring probe is provided. The fetal monitoring probe comprises the pressure detection device.
The beneficial effects of the embodiment of the application are that: the application pressure sensor is used for pressure measurement, includes: the base plate comprises a main body part and a sensing part which are integrally arranged, the sensing part is provided with a first mounting part, the first mounting part is used for mounting a connecting piece, the sensing part is fixedly connected with a transmission part of the pressure detection device through the connecting piece so as to sense pressure from the transmission part, and a breaking groove is arranged between the sensing part and the main body part so that the sensing part deforms relative to the main body part under the action of the pressure; and the pressure detection piece is arranged on the sensing part and used for sensing deformation and converting the deformation into an electric signal. Through the mode, the first installation part for installing the connecting piece is arranged on the sensing part for sensing the pressure in the pressure sensor, so that the sensing part is fixedly connected with the transmission piece for transmitting the pressure through the connecting piece; for traditional technical scheme, this application can make response portion and driving medium keep being connected always, can avoid breaking away from between response portion and the driving medium and appearing the clearance because of factors such as operational environment changes or device are ageing, and the problem of accurate detection pressure, consequently, this application can improve pressure sensor, pressure measurement device and child prison probe's detection precision.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of a pressure sensor of the present application;
FIG. 2 is a schematic side view of the pressure sensor of the embodiment of FIG. 1;
FIG. 3 is a schematic diagram of the structure of the substrate in the pressure sensor of the embodiment of FIG. 1;
FIG. 4 is a schematic cross-sectional view of an embodiment of the pressure measurement apparatus of the present application;
FIG. 5 is a schematic structural diagram of a circuit board and a pressure sensor in the pressure detecting device of the embodiment shown in FIG. 4.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be noted that the following examples are only illustrative of the present application, and do not limit the scope of the present application. Likewise, the following examples are only some examples and not all examples of the present application, and all other examples obtained by a person of ordinary skill in the art without any inventive step are within the scope of the present application.
The present application first proposes a pressure sensor, as shown in fig. 1 to 3, fig. 1 is a schematic structural diagram of an embodiment of the pressure sensor of the present application; FIG. 2 is a schematic side view of the pressure sensor of the embodiment of FIG. 1; fig. 3 is a schematic structural diagram of a substrate in the pressure sensor of the embodiment of fig. 1. The pressure sensor 10 of the present embodiment is used in a pressure detection device (not shown), and the pressure sensor 10 includes: a substrate 110 and a pressure detector 120; the substrate 110 includes a main body 111 and a sensing portion 112, the sensing portion 112 is integrally formed with a first mounting portion 114, the first mounting portion 114 is used for mounting a connecting member 51 (as shown in fig. 4), the sensing portion 112 is fixedly connected to a transmission member 52 (as shown in fig. 4) of the pressure detection device through the connecting member 51 so as to sense pressure from the transmission member 52, and a disconnection groove 113 is formed between the sensing portion 112 and the main body 111 so that the sensing portion 112 deforms relative to the main body 111 under the action of the pressure; the pressure detecting member 120 is disposed on the sensing part 112 to sense the deformation and convert the deformation into an electrical signal.
The breaking groove 113 is provided between the main body portion 111 and the sensing portion 112 on the substrate 110 of the embodiment, so that one side of the sensing portion 112 close to the breaking groove 113 is broken from the main body portion 111, so that the sensing portion 112 can deform relative to the main body portion 111 when being subjected to pressure, and the pressure detecting member 120 provided on the sensing portion 112 can detect the deformation, and as the deformation is generated by the pressure, the pressure detecting member 120 can obtain an electrical signal, i.e., a pressure value, corresponding to the pressure according to the deformation.
The substrate 110 of the present embodiment is a metal substrate; the pressure sensor 10 may be circular, rectangular, race track-shaped, etc.;
the open groove 113 of the present embodiment has a certain width, and can improve the flexibility of deformation of the sensing part 112.
Different from the prior art, the sensing portion 112 for sensing pressure in the pressure sensor 10 of the present embodiment is provided with a first mounting portion 114 for mounting the connecting member 51, so that the sensing portion 112 is fixedly connected to the transmission member 52 for transmitting pressure through the connecting member 51; for traditional technical scheme, this embodiment can make sensing portion 112 and driving medium 52 keep being connected always, can avoid breaking away from between sensing portion 112 and the driving medium 52 because of factor such as operational environment changes or device ageing appearing the clearance, and the problem of accurate detection pressure, consequently, can improve pressure sensor 10's detection precision.
Alternatively, the pressure detector 120 of the present embodiment is a resistance strain gauge (resistance strain gauge), and the resistance strain gauge is attached to the sensing portion 112.
Different from the prior art, the pressure detection member 120 for detecting pressure in the present embodiment is directly attached to the sensing portion 112 for sensing pressure, and the present embodiment does not require an installation mechanism, has a small installation space, and is convenient to install and disassemble, so that the present embodiment can reduce the volume and weight of the pressure sensor 10, and improve the simplicity of installation, use and maintenance.
In other embodiments, other pressure detecting elements for detecting pressure may be used instead of the resistance strain gauge, and the pressure detecting elements may be disposed on the sensing portion by a fixing method such as welding or other fixing structure.
Optionally, the pressure sensor 10 of the present embodiment further includes an adhesive layer (not shown), which is disposed between the sensing portion 112 and the pressure detecting member 120, and is used to fix the pressure detecting member 120 on the sensing portion 112.
The adhesive layer can be back adhesive or glue, etc.
In the present embodiment, the pressure sensor 10 can be reduced in thickness by fixing the pressure detector 120 to the sensing portion 112 by the adhesive layer.
The substrate 110 of the present embodiment includes a first main surface and a second main surface opposite to each other, the first main surface and the second main surface are parallel to the force-bearing surface of the pressure sensor 10, the pressure detecting element 120 is disposed on the first main surface or the second main surface of the sensing portion 112, and the force-bearing surface of the pressure detecting element 120 is parallel to the force-bearing surface of the pressure sensor 10.
Optionally, the adhesive layer of the present embodiment further covers a side surface of the pressure detection member 120 and a surface (a first main surface or a second main surface) of a side away from the sensing part 112. With this arrangement, the adhesive layer can further protect the pressure detection member 120.
In other embodiments, the adhesive layer may cover only the side surface of the pressure detection piece and the surface of the side away from the sensing part, but is not disposed between the sensing part and the pressure detection piece, so that the sensing part can be in direct contact with the pressure detection piece, and the accuracy of pressure detection can be improved; meanwhile, the adhesive layer further extends to an area of the sensing part not covered by the pressure detection piece to fix the pressure detection piece on the sensing part.
Optionally, the breaking groove 113 on the substrate 110 of the present embodiment is an arc-shaped breaking groove, the sensing portion 112 is located inside the arc-shaped breaking groove 113, and the main portion 111 is located outside the arc-shaped breaking groove 113.
The arc-shaped break groove 113 not only improves the flexibility of deformation of the sensing part 112 relative to the main body 111 when the sensing part is pressed, but also enables the sensing part 112 to be stably connected with the main body 111.
With response portion 112 setting in the inboard of arc disconnected groove, not only can protect response portion 112 and with the pressure measurement piece 120 that response portion 112 laminating set up, can improve the pressure measurement accuracy moreover, because response portion 112 only produces deformation when receiving the pressure of stress surface.
The arc-shaped breaking groove of the embodiment is arranged in a U shape; in other embodiments, the arc-shaped breaking groove can also be arranged in a V shape and the like.
Optionally, the main body portion 111 of the present embodiment further extends to a side of the sensing portion 112 away from the disconnected slot 113, that is, the main body portion 111 is disposed around the sensing portion 112, so that the second mounting portion 115 is disposed on the main body portion 111, and the pressure sensor 10 is fixedly connected to an external component through the second mounting portion 115 without affecting the sensing portion 112.
Optionally, the first mounting portion 114 of the present embodiment is disposed on a side of the sensing portion 112 close to the disconnection groove 113.
In the present embodiment, the first mounting portion 114 is disposed close to the open groove 113, so that the sensitivity of the sensing portion 112 to deformation due to pressure can be improved, and the sensitivity of the pressure detection member 120 disposed on the sensing portion 112 can be improved.
The first mounting portion 114 of the present embodiment is a first mounting hole, and the connecting member 51 includes a screw, and can be used by matching the screw with the first mounting hole to connect the sensing portion 112 with the transmission member 52 (for acquiring external hard force to deform the sensing portion 112).
The transmission member 52 collects external hard force to deform the sensing portion 112, the pressure detection member 120 generates a creep deformation signal, and converts the creep deformation signal into an electrical signal, and the electrical signal is transmitted to the circuit board 41 (as shown in fig. 4) or a background system (not shown) through the wire 130 of the pressure detection member 120 for processing.
Further, in this embodiment, a spring (not shown) may be disposed between one end of the screw close to the first mounting hole and the sensing portion 112, and two ends of the spring are respectively abutted to the screw and the sensing portion 112, so that the deformation of the sensing portion 112 is softer.
The number of the first mounting holes of the present embodiment is 1; in other embodiments, the number of first mounting portions may be 2 or greater than 2.
Optionally, the main body portion 111 of the present embodiment is provided with a second mounting portion 115 for fixedly connecting the main body portion 111 with the pressure detection device.
The second mounting portion 115 of the present embodiment is a second mounting hole, and can be used by a screw to cooperate with the second mounting hole, so as to fixedly connect the main body portion 111 and the pressure detection device 40 (as shown in fig. 4). The main body 111 may be fixedly connected to the circuit board 41 of the pressure detection device 40 or a supporting fixture (not shown).
The first mounting hole and the second mounting hole of the embodiment are through holes; in other embodiments, the first mounting hole and/or the second mounting hole can be through holes or grooves.
The number of the second mounting portions 115 of the present embodiment is 3, and the second mounting portions are uniformly disposed on the main body portion 111 to improve the stability thereof; in other embodiments, the number of second mounting portions 115 may be greater than 3.
The three second mounting portions 115 are provided corresponding to the two ends and the middle position of the arc-shaped open groove, respectively, and the stability of the main body portion 111 and the pressure detection device 40 can be further improved.
In other embodiments, the second mounting portion may also be a solder pad, and the main body portion is fixedly connected to the circuit board by soldering, or by pasting, etc.
Alternatively, the pressure detection member 120 of the present embodiment is connected to the circuit board 41 of the pressure detection device 40 through a wire 130.
Specifically, one end of the wire 130 is connected to the sensing portion 112 and extends from the sensing portion 112 toward a direction of the sensing portion 112 away from the disconnection groove 113, and the other end is connected to the circuit board 41.
The pressure sensor 10 is a small pressure sensor which can be matched with a uterine contraction pressure fetal monitoring probe to measure uterine contraction signals, and compared with the traditional pressure sensor, the sensor system has the advantages of small size, convenience in installation, simplicity and convenience in maintenance, light weight and the traditional uterine contraction pressure sensor, and is more convenient for users to use and experience.
The process flow method of the pressure sensor 10 includes: processing a metal base material according to the external dimensions of the pressure sensor 10 to form a substrate 110; then adhering the pressure detection member 120 on the sensing part 112 of the substrate 110 and soldering the lead 130 for the pressure detection member 120; the pressure sensing piece 120 is then covered with glue.
The present application further provides a pressure detecting device, as shown in fig. 4 and 5, fig. 4 is a schematic cross-sectional structure diagram of an embodiment of the pressure detecting device of the present application; FIG. 5 is a schematic structural diagram of a circuit board and a pressure sensor in the pressure detecting device of the embodiment shown in FIG. 4. The pressure detecting device 40 of the present embodiment includes a circuit board 41 and a pressure sensor 10, the circuit board 41 has an insertion hole 411, the main body 111 is fixed to the circuit board 41 in a fitting manner and covers the insertion hole 411, and the sensing portion 112 deforms in a direction toward the insertion hole 411 relative to the main body 111 under pressure.
For the structure and the operation principle of the pressure sensor 10, reference may be made to the above embodiments, which are not described herein.
The circuit board 41 is provided with an insertion hole 411, the insertion hole 411 may be located in a central region or an edge region of the circuit board 41, and the insertion hole 411 may be circular, rectangular, racetrack-shaped, and the like, which is not limited specifically.
The main body 111 is fixed to the circuit board 41 and covers the insertion hole 411, the root of the sensing portion 112 is connected to the main body 111, the free end of the sensing portion 112 is aligned with the insertion hole 411, and the free end of the sensing portion 112 deforms correspondingly toward the insertion hole 411 when being pressed. The arrangement can reuse the space of the embedded hole 411 when the sensing part 112 deforms, thereby reducing the thickness of the product.
In a specific embodiment, the circuit board 41 and the pressure sensor 10 may be provided with mutually matching positioning and matching structures to facilitate the positioning and assembling of the pressure sensor 10 relative to the circuit board 41. For example, the circuit board 41 is provided with positioning holes 12, and the number, position, and shape of the positioning holes 12 correspond to the second mounting portion 115 (second mounting hole) on the main body portion 111.
The pressure detecting device 40 of the present embodiment further includes a housing 42 and a transmission member 52; the housing 42 is used for the circuit board 41 and the pressure sensor 10, and the area of the housing 42 corresponding to the pressure sensor 10 is provided with an assembly opening (not shown), and the transmission member 52 is assembled with the housing 42 and covers the assembly opening, and is in transmission fit with the sensing portion 112.
The transmission member 52 of this embodiment may include a soft transmission member 431 and a hard transmission member 432, the soft transmission member 431 may be made of a silica gel material, the soft transmission member 431 may include a pressure receiving portion 401, a deformable annular groove portion 402, and an embedded annular groove portion 403 that are sequentially connected from inside to outside, the soft transmission member 431 is embedded and assembled with the assembly opening through the embedded annular groove portion 403, the hard transmission member 432 may be made of hard plastic or metal, and the hard transmission member 432 abuts between the inner surface of the pressure receiving portion 401 and the sensing portion 112.
The hard transmission member 432 may include a main plate (not shown) and a protrusion portion (not shown) protruding from the main plate, the main plate is attached to the inner surface of the pressed portion 401, and the protrusion portion abuts against the free end of the sensing portion 112.
The housing 42 is further provided with a band fastener 44, the band fastener 44 may be provided on a side surface or a top portion of the housing 42, and the band fastener 44 is used to connect a band to attach the pressure detecting device 40 to a skin surface of a human body for pressure detection, such as an abdomen of a pregnant woman.
The pressure detection device 40 of the embodiment has a compact structure, the size and thickness of a product can be reduced and the assembly is more stable and reliable through the attaching installation of the main body part 111 and the circuit board 41, the internal stress of the shell 42 can be prevented from influencing the pressure sensor 10, the pressure value measured by the pressure sensor 10 is more stable, the free end of the induction part 112 is correspondingly deformed towards the embedded hole 411 under the action of pressure by arranging the embedded hole 411 on the circuit board 41, so that the space of the embedded hole 411 is fully utilized, and the thickness of the product is reduced.
The embodiment of the present application further provides a fetal monitoring probe, where the fetal monitoring probe includes a pressure detection device, and the pressure detection device has the same structure and working distance as the pressure detection device 40 in the above embodiment, and is not described herein again.
Be different from prior art, this application pressure sensor is used for pressure measurement, includes: the base plate comprises a main body part and a sensing part which are integrally arranged, the sensing part is provided with a first mounting part, the first mounting part is used for mounting a connecting piece, the sensing part is fixedly connected with a transmission part of the pressure detection device through the connecting piece so as to sense pressure from the transmission part, and a breaking groove is arranged between the sensing part and the main body part so that the sensing part deforms relative to the main body part under the action of the pressure; and the pressure detection piece is arranged on the sensing part and used for sensing deformation and converting the deformation into an electric signal. Through the mode, the first installation part for installing the connecting piece is arranged on the sensing part for sensing the pressure in the pressure sensor, so that the sensing part is fixedly connected with the transmission piece for transmitting the pressure through the connecting piece; for traditional technical scheme, this application can make response portion and driving medium keep being connected always, can avoid breaking away from between response portion and the driving medium and appearing the clearance because of factors such as operational environment changes or device are ageing, and the problem of accurate detection pressure, consequently, this application can improve pressure sensor, pressure measurement device and child prison probe's detection precision.
The above description is only an embodiment of the present application, and not intended to limit the scope of the present application, and all equivalent mechanisms or equivalent processes performed by the present application and the contents of the appended drawings, or directly or indirectly applied to other related technical fields, are all included in the scope of the present application.
Claims (10)
1. A pressure sensor for a pressure detection device, the pressure sensor comprising:
the base plate comprises a main body part and an induction part which are integrally arranged, the induction part is provided with a first installation part, the first installation part is used for installing a connecting piece, the induction part is fixedly connected with a transmission piece of the pressure detection device through the connecting piece so as to induce pressure from the transmission piece, and a disconnection groove is arranged between the induction part and the main body part so that the induction part deforms relative to the main body part under the action of the pressure;
and the pressure detection piece is arranged on the sensing part and used for sensing the deformation and converting the deformation into an electric signal.
2. The pressure sensor according to claim 1, wherein the break groove is an arc break groove, the sensing portion is located inside the arc break groove, the main portion is located outside the arc break groove, and the main portion further extends to a side of the sensing portion facing away from the break groove.
3. The pressure sensor of claim 2, wherein the first mounting portion is disposed on a side of the sensing portion adjacent to the break groove.
4. The pressure sensor according to claim 2, wherein the main body portion is provided with three second mounting portions, and the three second mounting portions are respectively provided corresponding to both ends and a middle position of the arc-shaped disconnection groove.
5. The pressure sensor according to claim 1, wherein the pressure detecting member is a resistance strain gauge, and the resistance strain gauge is provided in contact with the sensing portion.
6. The pressure sensor of claim 1, further comprising an adhesive layer disposed between the sensing portion and the pressure sensing member for securing the pressure sensing member to the sensing portion.
7. The pressure sensor according to claim 6, wherein the adhesive layer further covers a side surface of the pressure detecting member and a surface of a side facing away from the sensing part.
8. A pressure sensor according to any of claims 1 to 7, for use in a pressure sensing device, the pressure sensing member being connected to a circuit board of the pressure sensing device by a wire.
9. A pressure detecting device, comprising a circuit board and the pressure sensor according to any one of claims 1 to 8, wherein the circuit board is provided with an insertion hole, the main body portion is fixed to the circuit board in a fitting manner and covers the insertion hole, and the sensing portion is deformed relative to the main body portion in a direction toward the insertion hole by the pressure.
10. A fetal monitoring probe comprising the pressure detecting apparatus according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120688085.2U CN215778016U (en) | 2021-04-02 | 2021-04-02 | Pressure sensor, pressure detection device and fetal monitoring probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120688085.2U CN215778016U (en) | 2021-04-02 | 2021-04-02 | Pressure sensor, pressure detection device and fetal monitoring probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215778016U true CN215778016U (en) | 2022-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120688085.2U Active CN215778016U (en) | 2021-04-02 | 2021-04-02 | Pressure sensor, pressure detection device and fetal monitoring probe |
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| Country | Link |
|---|---|
| CN (1) | CN215778016U (en) |
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2021
- 2021-04-02 CN CN202120688085.2U patent/CN215778016U/en active Active
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