WO2016029750A1

WO2016029750A1 - Apparatus for detecting physiological signals of human body

Info

Publication number: WO2016029750A1
Application number: PCT/CN2015/084161
Authority: WO
Inventors: 胡琨
Original assignee: 胡琨
Priority date: 2014-08-25
Filing date: 2015-07-15
Publication date: 2016-03-03
Also published as: CN104224115A

Abstract

An apparatus for detecting physiological signals of the human body. The apparatus comprises a plurality of piezoelectric ceramic pieces (10), a signal collecting processor (20) and a power source (30). The piezoelectric ceramic pieces (10) are connected in series and/or in parallel through wires and are connected to the signal collecting processor (20), and the signal collecting processor (20) is connected to the power source (30). The piezoelectric ceramic pieces (10) can be dispersedly laid on a liner. In the apparatus, the piezoelectric ceramic pieces (10) are connected in series and/or in parallel through the wires and are connected to the signal collecting processor (20), and in the use process, the piezoelectric ceramic pieces (10) are laid below a mattress. The thickness of the ceramic pieces is small, and the thickness of the apparatus for detecting the physiological signals of the human body is equal to that of the ceramic pieces, so the apparatus is comfortable to use. The piezoelectric ceramic pieces (10) can be folded and collected together, and are thus convenient to store and carry. The piezoelectric ceramic pieces (10) are passive sensing devices, so energy is saved, and the piezoelectric ceramic pieces (10) can directly generate electrical signals when pressed and have sensitive response and better sensing effect.

Description

Device for detecting physiological signals of human body

Technical field

The invention relates to the field of human physiological signal collection, in particular to a device for detecting physiological signals of a human body.

Background technique

There are many devices for detecting human physiological signals, such as setting a pressure sensor in a mattress, and converting the pressure into an electrical signal for transmission to a signal acquisition processor; for example, setting a piezoelectric film sensor in a mattress, the pressure needs to be converted into a pull Extensibility, sensitivity is not high; for example, setting a cavity in a mattress, collecting the tension of the cavity, the production process is complicated; for example, the piezoelectric ceramic sensor is wrapped in a hard material, and the hard material is made An object having a certain thickness, when used, is placed at a center position under the mattress to make the center position of the mattress protrude, so as to collect the pressure at a distance from the mattress, and the user lying on the mattress has discomfort due to the large thickness. .

Therefore, it is necessary to provide a device that is small in thickness, convenient to use, and comfortable to detect physiological signals of the human body.

Summary of the invention

The main object of the present invention is to provide a device which is small in thickness, convenient to use and comfortable to detect physiological signals of a human body.

In order to achieve the above object, a solution to the present invention is: a device for detecting a physiological signal of a human body, comprising a plurality of piezoelectric ceramic sheets, a signal acquisition processor, and a power source;

The plurality of piezoelectric ceramic sheets are connected to the signal acquisition processor through wires in series and/or in parallel, and the signal acquisition processor is connected to the power source;

The plurality of piezoelectric ceramic sheets may be dispersedly laid on the substrate.

Further, the wire is a metal foil tape.

Further, the piezoelectric ceramic sheet is a rounded rectangle, and the piezoelectric ceramic sheets connected in series are connected in the longitudinal direction, and the width of the metal foil strip is the same as the width of the piezoelectric ceramic sheet.

Further, the piezoelectric ceramic sheet is circular, and the width of the metal foil strip is the same as the diameter of the circular piezoelectric ceramic sheet.

Further, a wire socket is disposed on the piezoelectric ceramic piece, and a plug is disposed on both ends of the wire, and the piezoelectric ceramic piece and the piezoelectric ceramic piece are connected to each other through a plug on the wire.

Further, the plurality of piezoelectric ceramic sheets are fixedly laid on the flexible pad body.

Further, the plurality of piezoelectric ceramic sheets are wrapped in a flexible mat body, and the plurality of piezoelectric ceramic sheets are tiled in the flexible mat body and fixed relative to the flexible mat body.

Further, the plurality of piezoelectric ceramic sheets are fixedly laid on the first hard mat body.

Further, the second hard mat body is covered, and the second hard mat body is covered by the first hard mat body, and the plurality of piezoelectric ceramic sheets are sandwiched between the first hard mat body and the second hard mat body. between.

Further, the first hard pad body and/or the second hard pad body are provided with a convex structure on the one side of the piezoelectric ceramic piece facing the ceramic tooth piece.

The beneficial effects of the present invention are as follows: in the present invention, a plurality of piezoelectric ceramic sheets are connected to the signal acquisition processor through wires in series and/or in parallel, and a plurality of piezoelectric ceramic sheets are laid in the process of use. Under the mattress, the thickness is small, the thickness of the ceramic piece is what is the thickness of the device for detecting the physiological signal of the human body, and the use is comfortable; the plurality of piezoelectric ceramic pieces can be folded and collected together for convenient storage and carrying. Piezoelectric ceramic sheet is a passive sensing device that can save energy, and directly generates electrical signals when subjected to pressure, which is sensitive and sensitive.

DRAWINGS

1 is a schematic structural view of an embodiment of an apparatus for detecting a physiological signal of a human body according to the present invention;

2 is a schematic structural view of another embodiment of a device for detecting a physiological signal of a human body according to the present invention;

3 is a schematic structural view of a piezoelectric ceramic piece and a metal foil strip connected to a device for detecting a physiological signal of a human body according to the present invention;

4 is a schematic structural view of still another embodiment of a device for detecting a physiological signal of a human body according to the present invention;

5 is a schematic cross-sectional structural view of an embodiment of a device for detecting a physiological signal of a human body according to the present invention;

6 is a schematic cross-sectional view showing another embodiment of a device for detecting a physiological signal of a human body according to the present invention.

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

detailed description

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to Figure 1, In the embodiment of the present invention, an apparatus for detecting a physiological signal of a human body is first proposed, including a plurality of piezoelectric ceramic sheets 10, a signal acquisition processor 20, and a power source 30; the plurality of piezoelectric ceramic sheets 10 are connected in series with each other through wires 40, or Connected in parallel, or in series, parallel, etc., and finally connected to the signal acquisition processor 20, the signal acquisition processor 20 is connected to the power source 30, and each connection is insulated; the plurality of piezoelectric ceramics The sheet 10 can be spread over the substrate. The lining refers to an object capable of carrying a plurality of piezoelectric ceramic sheets 10, such as a bed board, a sofa, or the like for sitting and/or lying on a human body. In this embodiment, the signal acquisition processor 20 includes a signal amplifying unit, a signal filtering unit, and a signal converting unit. The piezoelectric ceramic sheet 10 is subjected to pressure to generate an electrical signal, and the electrical signal is amplified by a signal amplifying unit, and then The useless signal is filtered out by the signal filtering unit. If the frequency of the human heart beat is 0.7 Hz to 3 Hz, the signal filtering unit will retain the electrical signal representing the frequency band, and the signals of other frequency bands are retained or deleted according to the demand, and the voltage is pressed. The electric ceramic chip 10 usually collects an analog signal, so finally the analog signal is converted into a digital signal by the signal conversion unit, which is convenient for the external intelligent terminal 20 to receive and process. Of course, the signal acquisition processor 20 can also include a radio frequency antenna or other data. The interface sends the collected data to an external host computer, and the host computer can be a smart device such as a smart phone or a computer.

In the present embodiment, a plurality of piezoelectric ceramic sheets 10 are connected to the signal acquisition processor 20 through wires 40 in series and/or in parallel, and a plurality of piezoelectric ceramic sheets 10 are laid in the process of use. Under the mattress, since the piezoelectric ceramic sheet 10 is covered with a mattress, when the user is lying on the mattress, physiological signals are transmitted to the piezoelectric ceramic sheet 10 through the mattress, and the piezoelectric ceramic sheet is placed. 10 converting the weak dynamic signal of the user into an electrical signal and transmitting it to the signal acquisition processor 20 for processing, which is very convenient to use; the thickness of the device for detecting the physiological signal of the human body is small, and the thickness of the ceramic piece is What is the thickness of the device for detecting the physiological signal of the human body? When it is laid under the mattress, it does not affect the comfort of the mattress and is comfortable to use; the present invention can be used according to the fact that the plurality of piezoelectric ceramic sheets 10 are connected by the wire 40. The piezoelectric ceramic sheet 10 is laid in the active area of the person. For example, a mattress of the same size is arranged on a bed of one meter and five meters, and the common area of the user is between 0.1 meters and 1.4 meters, so that the pressure can be applied. The ceramic sheet 10 is laid as far as possible between 0.1 meters and 1.4 meters, which can better collect the physiological signals of the human body, such as the user's breathing signal, heartbeat signal, etc., that is, it can be laid according to different use environments. The required area is flexible to use; the apparatus for detecting physiological signals of the human body, the plurality of piezoelectric ceramic sheets 10 are connected by the wires 40, so that they can be folded and collected together for convenient storage and carrying, and the human body physiology is detected if necessary. The signal device is taken away and can be bent, and the adjacent piezoelectric ceramic sheets 10 can be placed in an overlapping manner, and the volume is small after storage, which is convenient for storage and carrying; the device for detecting physiological signals of the human body uses piezoelectric ceramics. The piezoelectric ceramic chip 10 is a passive sensing device, so that the power supply 30 only needs to supply power to the signal acquisition processor 20, which can save energy and directly generate an electrical signal when subjected to pressure. The pressure sensor, tension sensor, piezoelectric film sensor and other reactions are more sensitive, the sensing effect is better, and the power supply 30 is generally set in the letter. Acquisition processor 20, easy to take, reduced volume.

In the apparatus for detecting a physiological signal of a human body, the plurality of piezoelectric ceramic sheets 10 are connected by a series connection, a parallel connection, or a series connection and a parallel connection of the wires 40. In other words, the connection manner of the piezoelectric ceramic sheets 10 is If there is no fixed requirement, it is only necessary to transfer the electric quantity generated by the piezoelectric ceramic piece 10 to the signal acquisition processor 20. In an embodiment, as shown in FIG. 1, a plurality of piezoelectric ceramic sheets 10 are grouped, and each group of piezoelectric ceramic sheets 10 are connected in series, and then each group is connected in parallel, and finally connected to the signal acquisition processing unit; In another embodiment, as shown in FIG. 2, a plurality of piezoelectric ceramic sheets 10 are divided into several groups, and the piezoelectric ceramic sheets 10 in the group are connected in parallel to form a large group in series with other groups, and the large group is larger than the other groups. The groups are connected in parallel and finally connected to the signal acquisition processor 20. The connection is prevented from being diverse, and in other embodiments, it may be connected to a topology network or the like.

In a specific embodiment, if the adjacent piezoelectric ceramic sheets 10 are not connected by the wires 40, they are connected by the non-wires 40, and the plurality of piezoelectric ceramic sheets 10 form a net, which can improve the present invention. The strength prevents the occurrence of the loss of the piezoelectric ceramic sheet 10 after the conductive disconnection.

In the embodiment of the present invention, the wire 40 is a metal foil tape 41. The metal foil tape 41 has the function of shielding and shielding external signals. The metal foil tape 41 The denser the mesh formed, the better the shielding effect, and since the metal foil tape 41 is flat, the flatness of the present invention during laying and use can be improved, and the comfort of use can be improved. It should be noted that the surface of the metal foil tape 41 is insulated, such as an insulating film. In the present embodiment, the piezoelectric ceramic sheet 10 has a rounded rectangular shape, and the piezoelectric ceramic sheets 10 connected in series are connected in the longitudinal direction. The width of the metal foil strip 41 is the same as the width of the piezoelectric ceramic sheet 10, and the rounded corners are provided. When the piezoelectric ceramic sheet 10 is partially stressed, the stress is dispersed, the piezoelectric ceramic sheet 10 is not easily damaged, and the external object is not scratched; the piezoelectric ceramic sheets 10 connected in series are connected in the longitudinal direction, the metal The width of the foil tape 41 is the same as the width of the piezoelectric ceramic sheet 10 in order to improve the flatness of the product during use and to improve the comfort of use. In another embodiment, the piezoelectric ceramic sheet 10 is circular, and the width of the metal foil strip 41 is the same as the diameter of the circular piezoelectric ceramic sheet 10, and the purpose is the same as that of the rounded rectangular piezoelectric ceramic sheet 10. .

Referring to FIG. 3, an apparatus for detecting a physiological signal of a human body according to the present invention is an embodiment in which the piezoelectric ceramic sheet 10 is provided with a lead wire socket 43, and a plug 42 is disposed on both ends of the conductive wire 40, and the piezoelectric The ceramic piece 10 and the piezoelectric ceramic piece 10 are connected by a plug 42 on the wire 40 to be connected to the socket 43, that is, the wire 40 and the piezoelectric ceramic piece 10 can be inserted into each other to facilitate the connection therebetween. As in the embodiment, the wire 40 is a metal foil strip 41. The two ends of the metal foil strip 41 are respectively provided with plugs 42. The piezoelectric ceramic sheets 10 are circular, and the sockets 43 are symmetrically disposed on both sides. In the process, the two ends of the metal foil strip 41 are respectively inserted into the piezoelectric ceramic sheet 10. Of course, for practical use, a piezoelectric ceramic sheet 10 having only one side of the socket 43 is provided for the outermost side. usage of. The design of the socket 43 and the plug 42 can greatly improve the flexibility of use of the device for detecting human physiological signals of the present invention, and the convenience of storage and carrying. For example, the present invention is dispersed before use, and the piezoelectric ceramic sheets 10 are placed together for storage, and the metal foil strips 41 are placed together for storage. When used, they can be combined and used to be spliced into any size signal acquisition area. If there is a broken piezoelectric ceramic piece 10, it can be replaced at any time, which is convenient and flexible.

Referring to FIG. 4, in the embodiment of the present invention, the plurality of piezoelectric ceramic sheets 10 are fixedly laid on the flexible pad body 50, thereby preventing the piezoelectric ceramic sheet 10 from being lost and improving the human body physiology. The convenience of the device of the signal, for example, the flexible pad body 50 is preliminarily made into a specified size, and can be directly spread out when used, and can be directly rolled up when not in use, thereby improving the convenience of use and sharing the wire 40. The tensile force of the piezoelectric ceramic sheet 10 increases the service life.

Referring to FIG. 5, the apparatus for detecting a physiological signal of a human body according to the present invention is an embodiment in which the plurality of piezoelectric ceramic sheets 10 are wrapped in a flexible pad 50, and the plurality of piezoelectric ceramic sheets 10 are tiled and a flexible pad 50. And the relatively flexible pad body 50 is fixed, so that the piezoelectric ceramic sheet 10 can be better protected, and when the piezoelectric ceramic sheet 10 is wrapped with the flexible pad body 50 of a certain thickness to form the sensing pad, the overall softness effect can be obtained; When the signal is collected, the pressure change caused by the micro-motion is directly sensed, and the force conversion and the force transmission are avoided, and the sensing effect is good.

In an embodiment of the present invention, the plurality of piezoelectric ceramic sheets 10 are fixedly laid on the first hard mat body 60, and are directly placed under the mattress or be smashed when used. Next, the first hard pad body 60 can carry more piezoelectric ceramic sheets 10, and the piezoelectric ceramic sheet 10 has a better sensing effect due to the high hardness.

Referring to FIG. 6, a device for detecting a physiological signal of a human body according to the present invention includes a second hard pad body 60. The second hard pad body 60 is covered by the first hard pad body 60, and a plurality of pressures are applied. The electric ceramic sheet 10 is sandwiched between the first hard mat body 60 and the second hard mat body 60. This design is more beautiful and can prevent the piezoelectric ceramic sheet 10 from being scraped and dropped by an external object during use. Also, since both sides of the piezoelectric ceramic sheet 10 are covered by the hard pad body 60, the sensing effect is better. In order to further improve the sensing effect, the first hard mat body 60 and/or the second hard mat body 60 are disposed on the side of the piezoelectric ceramic sheet 10 opposite to the ceramic flakes. The structure can better squeeze the piezoelectric ceramic sheet 10, so the sensing effect is better.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are directly or indirectly applied to other related The technical field is equally included in the scope of patent protection of the present invention.

Claims

A device for detecting a physiological signal of a human body, comprising: a plurality of piezoelectric ceramic sheets, a signal acquisition processor and a power source;

The plurality of piezoelectric ceramic sheets are connected to the signal acquisition processor through wires in series and/or in parallel, and the signal acquisition processor is connected to the power source;

The plurality of piezoelectric ceramic sheets may be dispersedly laid on the substrate.
The apparatus for detecting a physiological signal of a human body according to claim 1, wherein the wire is a metal foil tape.
The apparatus for detecting physiological signals of a human body according to claim 2, wherein the piezoelectric ceramic sheets are rounded rectangles, and the piezoelectric ceramic sheets connected in series are connected in a length direction, and the width and piezoelectricity of the metal foil strips are The ceramic sheets have the same width.
The apparatus for detecting a physiological signal of a human body according to claim 2, wherein said piezoelectric ceramic sheet has a circular shape, and said metal foil strip has a same width as a circular piezoelectric ceramic sheet.
The device for detecting a physiological signal of a human body according to claim 1, wherein the piezoelectric ceramic piece is provided with a wire socket, and the two ends of the wire are provided with a plug, the piezoelectric ceramic piece and the piezoelectric ceramic The pieces are connected by a plug on the wire and connected to the socket.
The apparatus for detecting a physiological signal of a human body according to any one of claims 1 to 5, wherein the plurality of piezoelectric ceramic sheets are fixedly laid on the flexible pad body.
The apparatus for detecting a physiological signal of a human body according to any one of claims 1 to 5, wherein the plurality of piezoelectric ceramic sheets are wrapped in a flexible cushion body, and the plurality of piezoelectric ceramic sheets are tiled and flexible. In the body, and fixed relative to the flexible pad.
The apparatus for detecting a physiological signal of a human body according to any one of claims 1 to 5, wherein the plurality of piezoelectric ceramic sheets are fixedly laid on the first hard pad body.
The device for detecting a physiological signal of a human body according to claim 8, comprising a second hard pad body, the second hard pad body corresponding to the first hard pad body cover, and the plurality of piezoelectric ceramic piece clips Between the first hard mat and the second hard mat.
The apparatus for detecting a physiological signal of a human body according to claim 9, wherein the first hard mass body and/or the second hard mass body are disposed on the side of the piezoelectric ceramic piece facing the ceramic tooth piece. Raised structure.