TW201729753A - Physiological signal sensing device employing sound wave for detection of physiological signal - Google Patents

Abstract

A physiological signal sensing device comprises a sound transmission component, a sound collecting component, and an audio source receiving device. The sound transmission component comprises a plurality of independent closed hole structures that are not communicated with each other for generating a sound resonance effect, so that the sound waves of the microphonics from heart sounds, breathing vibration or organ sounds are transmitted in the sound transmission component by directly or indirectly contacting user's body. The sound collecting component comprises a first end and a second end, wherein the first end is in contact with the surface of the sound transmission component and is communicated with the second end by a through hole. The audio source receiving device comprises a receiving end and a sensing element, in which the receiving end is connected with the second end of the sound collecting component for receiving the sound waves transmitted by the sound transmission component, so as to achieve the purpose of physiological signal sensing.

Description

Physiological signal sensing device

The invention relates to a physiological signal sensing device, in particular to a sensing device for detecting a physiological signal by using sound waves.

Physiological signal measurement equipment used to be mostly used in medical institutions, requiring professional instruments and qualified medical personnel to operate. However, with the development of modern sensing and signal processing technology, the cost of medical electronic products has been greatly reduced, while home health care awareness It has also been significantly improved. The remote home care system is no longer imagined. Various techniques for measuring physiological signals have gradually developed into basic health tools that can be used in home environments, which is beneficial for long-term monitoring of users' health.

At present, the physiological status of infants, children with disabilities, patients or the elderly who are inconvenient or disabled is the main area of home care. According to the state of need for monitoring, it can be divided into static and active monitoring. Since the physiological signal measurement equipment in the home environment is operated by the general user and is not operated by professional medical personnel, the operation design of such equipment is simple, rapid, automated, non-invasive and low maintenance cost. . In addition, the use of physiological signal measurement equipment in the home environment should also consider non-interference or low-interference measurement methods to avoid changes in the daily activities and behaviors of users due to the use of products. It is easier for the average user to accept.

The existing respiratory heartbeat detection device can be divided into pressure sensing, optical wavelength sensing and adhesive electrode detection. Among them, the pressure sensing device can be used in a sleeping environment to combine detection of sleeping position, turning over, leaving the bed, etc., but its accuracy is poor, and is usually designed as a dedicated large device. For example, a bed or a mattress has a greater psychological pressure on the user. Optical wavelength sensing utilizes a non-contact detection method. Although it has the advantage of being small in size, it is easily affected by the external environment and the light source, has poor accuracy, and is expensive. The adhesive electrode detects the user's electrocardiogram, heart rate and other items with the best accuracy and can collect various physiological information. However, the wire is easily damaged, which leads to poor contact and affects the measurement effect, and is limited by the length of the wire, which limits the user. The action often makes the user feel inconvenient, and the way of sticking to the contact is also easy to fall off during the detection. Due to the complicated operation and the sense of being monitored, the user is often not actively used, but the effect is not achieved.

Therefore, there is a need for a physiological information detecting device that is simple in operation, convenient to maintain, and can be integrated into the user's home life, so as to achieve the purpose of using, detecting, and preventing accidents at any time.

Therefore, one aspect of the present invention provides a physiological signal sensing device that uses a soft sound transmitting member to form a signal transmitting structure. After the human body is in contact with the soft signal transmitting structure, the vibration frequency of the different micro-motion states of the organ can be In the different squeezing collision state generated by the soft sounding device and transmitted to the sensor to convert the signal, and after a certain time range of statistics and packet storage, the network signal is sent to compare and use for instant sensing. The physiological state of the person and the state of interaction with the environment.

The sounding member comprises a plurality of independent closed-cell structures which are not connected to each other and can generate an acoustic resonance effect. When directly or indirectly contacting the user's body, the sound waves of the heart sound, the respiratory vibration or the organ sound are transmitted to the sounding member. Pass in. The sound collecting member includes a first end portion and a second end portion, wherein one end portion contacts the surface of the sound absorbing member, and communicates with the second end portion through the through hole. The sound source receiving device comprises a receiving end and a sensing component, and the receiving end is connected to the second end of the sound collecting component to receive the sound wave propagated by the sounding component, so as to achieve the purpose of detecting the physiological signal. According to an embodiment of the present invention, the physiological signal sensing device is further connected to a signal processing device, and the sound wave received by the sensing component is converted into an electronic device. Signal.

According to an embodiment of the present invention, the sound collecting member of the physiological signal sensing device includes one or more first sound collecting portions and a second sound collecting portion, and the first end portions of the plurality of first sound collecting portions independently contact the sound transmitting The surface of the piece, the second sound collecting portion, includes a plurality of interfaces for respectively connecting the second ends of the first sound collecting portions.

In accordance with another embodiment of the present invention, the surface of the acoustical member in contact with the first end is coated with at least one coating, and in accordance with an embodiment of the present invention, the coating comprises a fabric, flocked or polymeric laminate.

According to an embodiment of the present invention, the closed cell structure of the sound transmitting member is defined by a polymer foaming material or a natural porous material. According to an embodiment of the embodiment, the polymer foaming material or the natural porous material has 10-100. % closed cell ratio. According to an embodiment of the present embodiment, the density of the polymer foamed material is 15 to 200 kg/cm ³ , and in another embodiment, the density of the polymer foamed material is 25 to 50 kg/cm ³ .

According to one or more embodiments of the present embodiment, the polymer foaming material comprises ethylene vinyl acetate (EVA), radiation cross-linked polyethylene (IXPE), crosslinked polyethylene. (cross-linked polyethylene; XPE), Chloroprene Rubber (CR), styrene butadiene rubber (SBR), polyvinyl chloride (PVC), ethylene-propylene ternary rubber ( Ethylene propylene terpolymer rubber; EPDM), Polyethylene foam (EPE), Acrylonitrile Butadiene rubber (NBR) or Polyurethane (PU) or any combination thereof.

In accordance with an embodiment of the present invention, the closed cell structure is defined by a composite material that is a continuous polymeric foam containing a plurality of discrete porous particles or fragments.

According to another embodiment of the invention, the closed cell structure is bounded by a fibrous material Included, comprising cellulose, cotton fiber, asbestos fiber, glass fiber, plastic fiber, conductive fiber or any combination thereof, consisting of straight, creped, twisted, crimped, felted or twisted or The fibrous materials comprise a sheet of material in a staggered, interwoven or stacked configuration defined by the arrangement of voids or internal voids.

Therefore, the physiological signal sensing device of the embodiment of the present invention utilizes a soft sounding member having a closed-cell structure to generate an acoustic resonance effect on sound waves of heart sounds, breath sounds, or organ sounds to amplify a small frequency. Through the sound source sensor to receive, with the processing and identification of the signal, to achieve accurate detection, recording, analysis of physiological phenomena.

100‧‧‧physiological signal sensing device

110‧‧‧Sounds

115‧‧‧Cladding

120‧‧‧Set parts

121‧‧‧The first part of the sound

122‧‧‧First end

123‧‧‧second end

124‧‧‧Connecting Department

125‧‧‧Connection section

126‧‧‧Second episode

127a‧‧‧ connector

127b‧‧‧ connector

128a‧‧‧Connecting port

128b‧‧‧ connector

130‧‧‧Source receiving device

132‧‧‧ Receiver

134‧‧‧上盖

136‧‧‧floor

140‧‧‧ concave edge

1 is a perspective view of a physiological signal sensing device according to an embodiment of the present invention; FIG. 2 is an exploded view of the physiological signal sensing device of the present embodiment; and FIG. 3 is a cross section of the physiological signal sensing device of the present embodiment. Figure 4 is a schematic diagram showing the use of a contact physiological signal sensing device according to an embodiment of the present invention.

Please refer to FIG. 1 , which is a perspective view of a physiological signal sensing device according to an embodiment of the present invention. The physiological signal sensing device 100 includes a sound transmitting member 110, a sound collecting member 120, and a sound source receiving device 130, and a concave edge 140. The physiological signal sensing device 100 of the present embodiment includes, but is not limited to, a form of a pad.

The sound transmitting member 110 is a means capable of generating an acoustic resonance effect and a propagating acoustic wave. According to an embodiment of the present invention, the sound transmitting member 110 is flexible. The soft signal transmission structure formed by the material, in the embodiment of the invention, the soft signal transmission structure has a closed The pore structure of the polymer foam material or the natural porous material, when the soft signal transmission structure directly or indirectly contacts the user's body, the micro-vibration frequency of the organ can be differently squeezed by the soft sound-transmitting member. The collision state is pressed, and the acoustic waves such as heart sounds, respiratory vibrations, or organ sounds are transmitted to the sound transmitting member 110.

The "acoustic resonance" as used in the present specification refers to a phenomenon in which the frequency of sound vibration is amplified when an acoustic body is driven by an external force of its resonance frequency.

The "closed cell structure" as used in the present specification refers to a plurality of cavities which are naturally formed or artificially produced in a solid object, and which are not connected to each other; an open cell structure Refers to a plurality of cavities that are naturally formed or artificially produced in a solid object, and the cavities communicate with each other and with the outside. Unless otherwise specified, the "material having a closed cell structure" as used in this specification does not exclude materials in which both the closed cell structure and the open cell structure exist. ""percentage of close area"" (closed to the area) refers to the ratio (%) of the volume of closed cells in the material to the apparent volume of the material.

The sound collecting member 120 has two ends of the contact sound transmitting member 110 and the connected sound source receiving device 130, and can transmit sound waves in the sound transmitting member 110 to the sound source receiving device 130. According to an embodiment of the present invention, the sound collecting member 120 may have a narrower diameter with respect to the sound transmitting member 110 to reduce diffusion when the sound wave propagates, and can be efficiently transmitted to the sound source receiving device 130.

The sound source receiving device 130 has a sensing component connected to the sound collecting component 120 to receive the sound wave propagated by the sound transmitting component 110 for the purpose of detecting the physiological signal. According to an embodiment of the present invention, the sound source receiving device 130 is further connected to a signal processing device, and converts the sound wave received by the sensing component into an electronic signal. Wherein, after the different squeeze collision states generated in the soft signal transmission structure are transmitted to the sensing component, the internal sensing resistor generates a voltage signal due to different vibrations, and the microprocessor performs specific time range statistics and packet storage. After that, it will be sent via the network signal. Send the comparison.

The sound transmitting member 110 has a concave edge 140, and the sound transmitting member 110 can be tightly attached to the body of the physiological signal sensing device product or the fabric coated on the surface of the sound transmitting member via sewing, hot pressing, pasting or the like. A thin layer of plastic or the like is closely attached thereto, or produces a decorative effect, increases flatness, and enhances comfort.

Please refer to FIG. 2 and FIG. 3 together. FIG. 2 is an exploded view of the physiological signal sensing device of the present embodiment. FIG. 3 is a cross-sectional view of the physiological signal sensing device of the present embodiment.

In the embodiment, the first sound collecting portion 121 is disposed on the sound transmitting member 110. wherein, as shown in FIG. 3, the two first sound collecting portions 121 include the first end portions 122 for independently contacting the sound transmission. The second end portion 123 is fixed to a bottom plate 136. The bottom plate 136 is fixed to the sound transmitting member 110, and the second end portion 123 has a connecting portion 124 connected to the connecting port 127a of the connecting portion 125.

A through hole is opened in the middle of the first sound collecting portion 121. The area of the portion where the first sound collecting portion 121 is in contact with the sound transmitting member 110 is slightly larger than the area of the cross section of the wall of the first sound collecting portion 121. Further, the surface of the sound transmitting member 110 is covered with a coating 115, and the first sound collecting portion 121 is directly in contact with the sound transmitting member 110 through the coating layer 115. According to an embodiment of the present invention, the coating layer 115 may comprise a fabric, flocking or polymer thin layer, such as a thermoplastic polyurethane (TPU), for protecting the polymer foam material of the sound transmitting member 110. Or natural porous materials to increase their durability.

The second sound collecting portion 126 includes a connecting port 128a and a connecting port 128b which are respectively connected to the connecting port 127b of the connecting portion 125. The sound source receiving device has a receiving end 132 connected to the second sound collecting portion 126, and the sensing element of the sound source receiving device 130 is connected to the receiving end 132 to receive the sound wave propagated by the sound transmitting member 110. In this embodiment, the sound source receiving device 130 is fixed on the bottom plate 136, and the upper cover 134 and the bottom plate 136 are covered to receive a part of the sound source receiving device 130 and the sound collecting member 120.

According to an embodiment of the present invention, the sound transmitting member 110 may be a natural porous material of a polymer material having a closed cell ratio of 10 to 100%, and may be, for example, a foamed material having a closed cell ratio of 30 to 90%. According to one embodiment of the present invention or more, the density of the polymer foam material of 15-200kg / ^c m ^3, in this embodiment, the density of the polymer foam material of 25-50kg / ^c m ^3.

Among them, the polymer foaming material contains a polymerization product of isocyanate or isothiocyanate. The polymer foaming material may include Ethylene vinyl acetate (EVA), irradiation cross-linked polyethylene (IXPE), cross-linked polyethylene (XPE), and chloroprene. Rubber (Chloroprene Rubber; CR), styrene butadiene rubber (SBR), polyvinyl chloride (PVC), ethylene-propylene ternary rubber (EPDM), polyethylene compound (Polyethylene foam; EPE), Acrylonitrile Butadiene rubber (NBR) or Polyurethane (PU), any combination thereof. The natural porous material may be a stack of sponge, softwood, coir silk, bamboo charcoal, charcoal, diatomaceous earth, coral, any combination of the above, or any combination thereof.

According to an embodiment of the invention, the closed cell structure is defined by a composite material which is a continuous polymer foam containing a plurality of discrete porous particles or fragments, such as regenerated foam, which is made up of foamed feet. It can also be applied by crushing, stirring glue and steam autoclaving and compression molding.

According to another embodiment of the present invention, the closed cell structure is defined by a fibrous material, including plant fibers, cotton fibers, asbestos fibers, glass fibers, plastic fibers, conductive fibers, or any combination thereof, from straight, wrinkled The twisted, crimped, felted or kneaded fiber material or sheets of the material are formed in a staggered, interwoven or stacked configuration, defined by the arrangement of voids or internal voids.

Please refer to FIG. 4, which is a schematic diagram of a use situation of a physiological signal sensing device according to an embodiment of the present invention. The physiological signal sensing device 400 has a sound transmitting member 410 and a sound source receiving device 420. In this embodiment, the physiological signal sensing device 400 can be placed on the bed or placed at the back of the chair. When the user lies on the bed or leans against the back of the chair, the heart sound or the breath sound can be detected by touching the area around the chest cavity, so that the user can rest, sleep, and drive the vehicle to instantly detect changes in the physiological condition.

In addition, the physiological signal sensing device of the embodiment of the present invention may also be in the form of a strap or placed on a personal object, for example, the physiological signal sensing device is designed as a head ring, a wristband, a brooch, an ankle, a corset, a bundle. Use directly on the chest or belt, or detachably combined with a headband, bracelet, brooch, ankle, corset, corset, belt or seat belt. It can be used in a variety of situations such as daily life, sports, and fetal sounds. Detection, driving, etc.

According to an embodiment of the present invention, the physiological signal sensing device is further connected to a signal processing device, which can convert the sound wave received by the sensing component into an electronic signal, and translate the received digital signal through the processor to identify the differential physiological Signals and noise, and data transmission through wired and wireless methods, discriminate, analyze and store the collected information, can make emergency warnings, make immediate medical measures, or record the long-term physiological state of users, as a long-term evaluation. use.

For example, when the signal detected by the physiological signal sensing device is determined to be abnormal, an emergency alert can be sent to the user (such as a driver driving), his guardian (family outside, designated contact, medical hospital) The office, the emergency center, the security center, the community property management center, etc., can also instantly transmit the information of the user's location through the connection with the remote server, so that the guardian can make immediate medical measures. The above-mentioned "abnormal conditions" include, but are not limited to, at least one of the physiological signs of the immediate detection is higher or lower than the preset normal value error range (indicating that there may be an impending acute health or accident risk), all The physiological signs of immediate detection disappear simultaneously (indicating that the user may be out of bed, dropped or the detection device is removed), etc. The following is an example of the signal identification method and its application scope of the present invention. It should be understood that the application scope of the present invention is not limited to the following cases.

The sensing device of the present invention determines the user's action state by monitoring the heartbeat and the respiratory signal, and is by lying in bed, sleeping, breathing, sleeping, sleeping on the left/right side, sleeping, sitting Status records such as starting and leaving the bed are recorded in the recorded statistics of individual sleep process events and used as a database for discriminating. For example, when the user's physiological data shows a steady state after falling asleep at night, the physiological data fluctuations monitored when the user is about to wake up will be intensified, and the state of waking up will be determined at this time. When the user wants to get up, the monitoring signal will show a state in which the breathing signal is weak or close to zero, and it will be determined that the patient is ready to leave the bed. When the monitored person has actually left the bed, since the sensing transmission structure cannot generate a signal due to contact, the heartbeat and respiratory data are both 0, thereby distinguishing that the user is in bed, sleeping, waking or leaving the bed, in real time. Monitor its security.

The invention can be applied to preventive medicine, including the cumulative data of the clinical actual records of chronic diseases such as respiratory tract/heart, such as the heartbeat of the monitored person, the frequency state of the respiratory signal, the amplitude of the signal, the signal waveform, the abnormal trend and the time axis, and the historical data. Match the various parameters generated by the change. If the data matches a certain proportion of similarity, the system will send a message to alert the caregiver. In addition, when the monitoring device continuously records the physiological data status until the preset reminding time range, the network analyzing unit will prompt the caregiver and the user by sending a reminder message/sound/image/light. The sensing device of the present invention has an actively optimized reward mechanism. For example, when the physiological signal is stored by the microprocessor for the signal packet accumulated in a certain time range, the system can transmit the signal packet to a network analysis unit for comparison, when the number of returned data and the analysis of the network analysis unit are recorded. If the ratio is different, the system will convert the amount of data actually returned. The number of actual drops will be recorded in the network analysis unit. If the frequency exceeds the set limit state, the network analysis unit will automatically send a monitoring device fault message.

In summary, the physiological signal sensing device of the embodiment of the present invention uses a soft sound transmitting member having a closed cell structure to form a soft signal transmitting structure, when it is in contact with the user's body. It can make the micro-motion state such as heart sound, breath sound or organ sound produce tiny squeeze inside the soft signal structure. Through this squeeze, the sound wave vibration produces an acoustic resonance effect, and effectively increases the amount of vibration air, and then transmits the sound source. Receive and match signal processing and identification, to achieve accurate detection, recording and analysis of physiological phenomena without using digital wafers, pressure sensors, micro-motion sensors, etc. at the contact points. The effect is that the body-worn device can not only be directly washed, but also the electronic parts are not directly in contact with the human body. The structure is innovative, the accuracy of measurement, the processing method is simplified, and the manufacturing cost is reduced.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and retouched without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.

100‧‧‧physiological signal sensing device

110‧‧‧Sounds

120‧‧‧Set parts

130‧‧‧Source receiving device

140‧‧‧ concave edge

Claims (10)

A physiological signal sensing device comprises: a sound transmitting member comprising a plurality of independent closed-cell structures that are not connected to each other; and a sound collecting member comprising: a first end portion contacting a surface of the sound transmitting member; a hole extending from the first end to a second end; and a sound source receiving device comprising: a receiving end connecting the second end of the sound collecting member; and a sensing component connected to the receiving end To receive the sound wave propagated by the sounding member. The physiological signal sensing device of claim 1, wherein the sound collecting member comprises at least a first sound collecting portion and a second sound collecting portion, the first end of the first sound collecting portions being independently Contacting at least one surface of the sounding member, the second sound collection comprising a plurality of interfaces respectively connecting the second ends of the first sound collecting portions. The physiological signal sensing device of claim 1, further comprising at least one coating covering the surface of the sounding member in contact with the first end, the coating comprising a fabric, a flocking or a polymer thin layer. The physiological signal sensing device of claim 1, further comprising a signal processing device connected to convert the sound wave received by the sensing component into an electronic signal. The physiological signal sensing device of claim 1, wherein the closed cell structures are defined by a polymer foam material or a natural porous material, and the polymer foam material or the natural porous material has 10-100. % closed cell ratio. The physiological signal sensing device according to claim 5, wherein the polymer foamed material has a density of 15 to 200 kg/cm ³ . The physiological signal sensing device according to claim 5, wherein the polymer foamed material has a density of 25 to 50 kg/cm ³ . The physiological signal sensing device according to claim 5, wherein the polymer foaming material comprises ethylene-vinyl acetate (EVA), light cross-linked polyethylene (IXPE), and Cross-linked polyethylene (XPE), Chloroprene Rubber (CR), styrene butadiene rubber (SBR), polyvinyl chloride (PVC), ethylene-propylene Ethylene propylene terpolymer rubber (EPDM), Polyethylene foam (EPE), Acrylonitrile Butadiene rubber (NBR) or Polyurethane (PU) or any combination thereof. The physiological signal sensing device of claim 1, wherein the closed cells are defined by a composite material, the composite material being a continuous polymer foam containing a plurality of discrete porous particles or fragments. The physiological signal sensing device of claim 1, wherein the closed cell structures are defined by a fiber material, including cellulose, cotton fiber, asbestos fiber, glass fiber, plastic fiber, conductive fiber or any combination thereof. Forming a sheet of material from a straight, creped, twisted, crimped, felted or knit fiber material in a staggered, interwoven or stacked form to have voids or interior The arrangement of the gaps is defined.