KR101020508B1 - An audio receiver for measuring pulse wave - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound output device for detecting pulse waves, the sound output device including a headset, an earset, a hearing aid, and the like, comprising: a pulse wave which is installed in the sound output device and measures and detects a pulse wave signal transmitted from a living body by a piezoelectric method. A sensor; A piezoelectric transducer connected to the pulse wave sensor and converting a pulse wave signal into an electrical signal; And a controller for controlling the pulse wave sensor and being connected to a piezoelectric transducer to display the detected pulse wave signal. In addition, the pulsation energy, i.e., pulse wave kinetic energy from the living body can be measured without a separate external power source. Pulse wave measurements can be made anywhere.

Pulse, pulse, pulse wave, pulse, measurement, detection, headset, earset, hearing aid, sound output device

Description

Sound output device for pulse wave detection {AN AUDIO RECEIVER FOR MEASURING PULSE WAVE}

The present invention relates to a sound output device for detecting a pulse wave, and more particularly, to a sound output device for detecting a pulse wave provided with a pulse wave sensor that enables the pulse rate to be always checked in a sound output device including a headset, an ear set, a hearing aid, and the like. will be.

Recently, people have invested a lot of time and money in their health as they are interested in well-being.

In general, a medical institution or a portable pulse pulverizer has been developed to measure one's own pulse, but the size and noise make it difficult to carry and is not suitable for use in public places.

To compensate for these shortcomings, you can add a pulse sensor to headsets, earsets, and hearing aids that are easily accessible from the surroundings, so that you can check your own health by listening to your songs while working out or studying. It became.

The electronic sensor of the conventional pulse meter has a problem that the range of the pulse that can be detected is extremely limited. For example, an electronic sensor equipped with a condenser microphone is not suitable for detecting a pulse wave signal of less than 30 Hz because it cannot properly detect a signal in a low frequency region. In addition, the electronic sensor having a dynamic microphone is not suitable for measuring a biosignal represented by a waveform such as a pulse wave since it has to undergo a step of amplification and noise filtering of a signal in order to compensate for the poor response characteristic of a low frequency region.

Sensors for measuring the pulse include a semiconductor method, a press method, and an optical method.

Optical pulse wave sensor has the advantage of being able to measure pulse wave stably with light emitting part and receiving part by measuring with light, but on the other hand, it is difficult to miniaturize due to its large volume, high power consumption and natural light That is, there is a disadvantage that the measurement is not good at the time of external measurement.

In addition, the pulse wave sensor of the semiconductor type has a disadvantage in that the power is consumed by measuring the resistance change when the pressure is given.

In addition, the pulse wave sensor of the press method is also called a pulse wave sensor of the pneumatic method, there is a disadvantage that the bulky.

On the other hand, as a prior art of the method for detecting the pulse through the ear, which is one of the important organs of the human body, "Pulse detection earphone having an alarm function" is disclosed in Patent Publication No. 10-2008-0088217, "Health self-diagnosis portable terminal" disclosed in 2005-0000819 is to detect a bio-signal in the ear using an infrared sensor, and the "boundary bio-signal measuring device" disclosed in Publication 10-2004-0095489 In the present invention, a biosignal is detected using an optical sensor, and the "sensor-equipped earphone and information reproducing apparatus" disclosed in Korean Patent Application Publication No. 10-2007-0009823 uses a volume controller having body information stored using a simple detachable sensor in the earphone. However, the infrared or light sensor used in this patent discloses an external power source for driving the sensor, and thus requires a lot of power consumption. Therefore, when used in a ubiquitous environment or a portable device, the battery consumption is greatly restricted, and the size of the sensor is also greatly limited in manufacturing.

Accordingly, the present invention has been made to solve the problems of the prior art as described above, by configuring a pulse wave sensor to constantly measure the pulse rate in the sound output device including a headset, earset, hearing aids, etc. The present invention provides a sound output device for pulse wave detection that is capable of detecting pulse waves, that is, pulsations, when the sound output device is worn at any time and anywhere, such as when listening to music, listening to music, or exercising while listening to music. have.

In addition, the pulse wave sensor of the present invention is a piezoelectric method, including a piezoelectric sensor or a piezoelectric element or a piezoelectric microphone, not only can measure the kinetic energy of the pulsation, i.e., the pulse wave, emitted from a living body, but also without any external power source. Provided is an audio output device for detecting pulse waves.

In addition, in another object of the present invention, by configuring the pulse wave sensor for measuring the pulse rate in and out of the sound output device including a headset, earset, hearing aids, etc., if necessary, the pulse wave sensor is in contact with the ear or around the ear, pulsation, that is, pulse wave Provided is an audio output device for detecting pulse waves that can be displayed on a sound or display.

The above object is an audio output device including a headset, an ear set, a hearing aid, and the like, comprising: a pulse wave sensor installed in the sound output device and measuring and detecting a pulse wave signal transmitted from a living body using a piezoelectric method; A piezoelectric transducer connected to the pulse wave sensor and converting a pulse wave signal into an electrical signal; And a controller for controlling the pulse wave sensor and being connected to a piezoelectric transducer to display the detected pulse wave signal.

In addition, the above object is, in the sound output device including a headset, earset, hearing aid, etc., the screw shaft protruding on one surface is installed to be embedded in the sound output device, and the pulse wave signal transmitted from the living body is measured by a piezoelectric method. A pulse wave sensor for detecting; A piezoelectric transducer connected to the pulse wave sensor and converting a pulse wave signal into an electrical signal; A controller for controlling the pulse wave sensor and displaying a detected pulse wave signal in connection with a piezoelectric transducer; It may be achieved by the sound output device for a pulse wave detection, characterized in that it comprises a; rotatably installed on the sound output device and coupled to the screw shaft of the pulse wave sensor to move the pulse wave sensor.

The rotating plate is coupled to a shaft for rotating the rotating plate, and the shaft is coupled to a motor for rotating the shaft forward and backward, and the shaft and the rotating plate are driven to rotate by the driving of the motor, and the pulse wave sensor is moved to the pulse wave sensor. By measuring the contact pressure between the skin and the skin, a pressure sensor for stopping the operation of the motor when the contact pressure reaches the set pressure may be configured, the controller may be configured a switch for driving the motor forward and reverse rotation have.

The above object is an audio output device including a headset, an ear set, a hearing aid, and the like, comprising: a pulse wave sensor installed in the sound output device and measuring and detecting a pulse wave signal transmitted from a living body using a piezoelectric method; A piezoelectric transducer connected to the pulse wave sensor and converting a pulse wave signal into an electrical signal; An airbag installed in the pulse wave sensor to elastically support the pulse wave sensor; And a controller for controlling the pulse wave sensor and being connected to a piezoelectric transducer to display the detected pulse wave signal.

In addition, the pulse wave sensor may be composed of a contact type piezoelectric sensor or a non-contact piezoelectric microphone, or the pulse wave sensor may be composed of a contact type piezoelectric sensor and a non-contact piezoelectric microphone at the same time, the controller has a pulse wave signal, that is, pulse rate Viewer can be configured to show or tell by voice.

In addition, the piezoelectric material of the pulse wave sensor is composed of any one material selected from the group consisting of PZT (lead zirconium titanate-based material) ceramic, Pb-containing single crystal material, and PVDF (polyvinylidene fluoride) piezoelectric polymer material. This is preferred.

According to the sound output device for detecting the pulse wave of the present invention, as the pulse wave sensor is worn with the sound output device configured with the pulse wave sensor, the pulsation energy, ie, the kinetic energy of the pulse wave, emitted from the living body can be measured without a separate external power source. Not only can you measure pulse waves anywhere?

In addition, the pulse wave sensor has an advantage that the pulse wave sensor can be drawn out only when measuring the pulse wave to be in contact with the ear or around the ear when the pulse wave sensor enters and exits the sound output device.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 5 are diagrams showing a sound output device for detecting a pulse wave according to the present invention.

The sound output device for pulse wave detection according to the present invention includes the sound output device 1 composed of a headset as shown in FIG. 1A and the motion of a Mac in the sound output device 1 composed of an ear set and a hearing aid (not shown) as shown in FIG. 1B. Pulse wave sensor 100 for detecting energy, that is, pulse wave is configured.

The pulse wave sensor 100 is a piezoelectric method, it may be composed of a contact type piezoelectric sensor or a non-contact piezoelectric microphone, or a contact type piezoelectric sensor and a non-contact piezoelectric microphone may be configured at the same time.

The piezoelectric pulse wave sensor 100 is operated on the principle similar to that of the press pulse pulse sensor, and the piezoelectric pulse wave sensor 100 has no power consumption of the sensor itself, can be miniaturized, and can be used anywhere. Compared with the conventional electronic sensors, the signal of the low frequency region can be detected well, and its response characteristic is also very good.

In particular, the pulse wave sensor 100 made of a piezoelectric sensor utilizes the property of generating electrical polarization when the piezoelectric material is subjected to mechanical stress, and on the contrary, causing physical displacement when receiving an electric field from the outside. In particular, when the blood flow is resumed with respect to the pulse wave, It is known to be useful for detecting kortkoff sounds caused by vortices of blood.

On the other hand, in the present embodiment, the pulse wave sensor 100 is composed of a piezoelectric sensor disclosed in the registration number 10-0754507 filed by the applicant.

That is, the pulse wave sensor 100, as shown in Figure 2, the housing 110 forming the outer shape of the pulse wave sensor 100, the pulse wave receiving unit 120 protruding on the housing 110, and It is provided below the pulse wave receiving unit 120 includes a piezoelectric transducer 130 for converting the pulse wave signal into an electrical signal, and a support 140 for holding and fixing the outer peripheral lower portion of the piezoelectric transducer 130. Both sides of the piezoelectric transducer 130 are connected with wires 150 for transmitting the converted electrical signals.

The pulse wave sensor 100, the pulse wave receiving unit 120 for transmitting a minute bio-signal, such as the pulse wave to the piezoelectric transducer 130 as an adhesive material having a good modulus of elasticity, the physical change to the piezoelectric transducer 130 easily. The piezoelectric transducer 130 is configured to be firmly fixed by the supporter 140 so that the piezoelectric transducer 130 can be deformed and restored elastically smoothly with high sensitivity to minute changes in the biological signal.

The housing 110 is configured in a pipe shape having a top and bottom open, and a flange 112 bent in the center direction so that the piezoelectric transducer 130 is tightly supported upward from the inside of the housing 110 at an upper end thereof. Is provided.

In addition, the upper part of the housing 110 to coagulate and adhere the two-component adhesive material to the housing 110 and the piezoelectric transducer 130 at the same time in order to deliver a minute bio-pressure to the piezoelectric transducer 130, the pulse wave receiving unit composed of an elastic solid body 120 is located. The upper surface of the pulse wave receiver 120 directly contacts the living body, that is, the skin (not shown) during pulse wave measurement, and protrudes convexly above the flange 112 surface of the housing 110 to facilitate reception of the pulse wave.

Inside the housing 110 is provided a piezoelectric transducer 130 for converting the pulse wave pressure signal of the continuous waveform generated by the blood flow changes in the living blood vessel into an electrical signal. The piezoelectric transducer 130 includes a piezoelectric single crystal ceramic 132 for converting mechanical stress and an electrical signal to each other, and an elastic vibrator 134 in which the piezoelectric single crystal ceramic 132 is attached to one surface and in close contact with the pulse wave receiver 120. It consists of Metal electrode films 136 are attached to upper and lower surfaces of the piezoelectric single crystal ceramics 132, and wires 150 for transmitting electrical signals are connected to the metal electrode films 136. In the mounted state, the elastic vibrating body 134 of the piezoelectric transducer 130 is in close contact with the bottom surface of the pulse wave receiver 120 and the flange 112.

The piezoelectric single crystal material is composed of a ferroelectric single crystal material having a high sensitivity of the piezoelectric transducer 130 and extending the frequency range of the collectable pulse wave signal to 0.1 to 100 kHz, and the chemical properties of the ferroelectric single crystal material are registered in Korean Patent Registration No. 10-. Since 0754507 is disclosed in detail, it will be replaced by this.

In this embodiment, although the piezoelectric single crystal material is cited as the piezoelectric material of the pulse wave sensor 100 as an example, it is composed of PZT (lead zirconium titanate-based material) ceramic, PVDF (polyvinylidene fluoride) piezoelectric polymer material, and the like. You may.

On the other hand, the piezoelectric transducer 130 as described above may be installed in the above configuration in the controller 700 to be described later.

In addition, the elastic vibrator 134 is preferably configured to be larger than the piezoelectric single crystal 132, the shape of the piezoelectric single crystal 132 is not particularly limited, but to form a rectangle rather than a circular in terms of sensitivity improvement good.

The elastic vibrator 134 and the piezoelectric single crystal 132 of the piezoelectric transducer 130 are respectively attached to the support 140 positioned below, and the outer periphery of the support 140 is not to interfere with other components. good. In the mounted state, the elastic vibrator 134 and the piezoelectric single crystal material 132 protruding downward with a small diameter from the lower surface thereof are stably fixed to maximize the elastic restoring force of the piezoelectric transducer 130 so as to react sensitively to minute sensitivity. A step 142 is formed inward of the support 140.

A printed circuit board (PCB) 160 is further provided below the piezoelectric transducer 130 to process the converted electrical pulse wave signal. The wires 150 connected to the two metal electrode films 136 of the piezoelectric transducer 130 are connected to the connection terminals 162a and 162b of the PCB 160 to transmit electrical signals. Predetermined portions of PCB 160 are perforated with one or more holes 164 for passing wires.

The PCB 160 preferably includes an amplification circuit for amplifying an electrical signal, a filter circuit for removing out-of-signal noise, an A / D conversion circuit for converting a continuous analog signal into an analysis digital signal, and Wired / wireless transmission port to external equipment is integrated.

The PCB 160 is preferably spaced apart from the piezoelectric transducer 130 by a predetermined distance for the purpose of preventing deformation due to pressure change and interference between the electronic devices. To this end, an outer diameter substantially coincides with an inner diameter of the housing 110, and an open bowl-shaped spacer 170 is positioned between the piezoelectric transducer 130 and the PCB 160. A through hole 172 is formed in the bottom surface of the spacer 170 to penetrate the wire 150 toward the connection terminals 162a and 162b of the PCB 160. The outer surface of the spacer 170 is fixed to the inner surface of the housing 110 using an adhesive of high hardness, is strongly bonded to the edge of the elastic vibrator 134 of the piezoelectric transducer 130, the PCB 160 is It is attached to and supported by the bottom of the spacer 170 and the housing 110. In order to secure the reliability of the fixed support for the PCB 160, the spacer 170 is preferably a bowl shape provided with a bottom portion, it is possible to achieve the object of the present invention even if configured in a simple ring shape. In this case, the PCB 160 is preferably attached to the periphery of the ring-shaped spacer.

Referring to the operation of the pulse wave sensor 100 as described above, if the pulse wave causes a slight pressure change in the pulse wave receiving unit 120, such a pressure change has a minimum loss due to the curved shape of the pulse wave receiving unit 120 piezoelectric The transducer 130 is reached, whereby the piezoelectric single crystal 132 generates an electrical polarization, which is converted into an electrical signal, which is amplified and filtered in the PCB 160 and then transmitted to an external, namely controller 700 to be described later. do.

The pulse wave sensor 100 configured as described above is installed to the sound output device 1 as shown in FIG.

The pulse wave sensor 100 is installed so that the screw shaft 300 protruding on one surface thereof is built in the sound output device 1, the outer periphery of the sound output device 1 of the screw shaft 300 Rotating plate 400 coupled to the screw portion is rotatably installed. The rotating plate 400 installed as described above is formed such that one side of the outer circumference thereof is exposed to the outside of the sound output device 1. Accordingly, as the screw shaft 300 rotates as the rotating plate 400 exposed to the outside of the sound output device 1 rotates, the pulse wave sensor 100 enters and exits from the sound output device 1.

In addition, as shown in Figure 4, in order to implement the semi-automatic operation of the pulse wave sensor 100, the spline coupling or serration coupling or key to the central portion of the rotary plate 400 to be integrally rotated like the rotary plate 400 The shaft 500 is coupled and installed by any one of coupling methods, and the motor 600 is installed on the shaft 500 to rotate the shaft 500 forward and backward. Therefore, as the motor 600 is driven forward and reverse rotation, the shaft 500 and the rotating plate 400 are rotated forward and backward to semi-automatically enter and exit the pulse wave sensor 100 through the screw shaft 300.

At this time, the motor 600 is connected to the controller 700 and controlled, and the controller 700 is provided with a switch 720 that can drive the motor 600 forward or reverse rotation. On the other hand, the controller 700 may be detachably connected to the pulse wave sensor 100 through a connector (not shown) or the like, and the controller 700 may show a pulse wave signal, that is, a pulse rate or a voice signal. 710 is installed, and the viewer 710 includes a display or a speaker. In addition, the controller 700 may be provided with a pair of tongs (not shown) so that the controller 700 may be provided in clothes, and a battery (not shown) may be inserted into the controller 700 as a power supply.

In addition, in order to implement the automatic entry and exit operation of the pulse wave sensor 100, the pulse wave sensor 100 measures the contact pressure between the pulse wave sensor 100 and the skin to be moved, the contact pressure is set to the set pressure When reached, the pressure sensor 200 is configured to stop the operation of the motor 600. The pressure sensor 200 is preferably configured on the upper surface of the pulse wave sensor 100, such as the pulse wave receiver 120 in direct contact with the skin, but may also be configured on the lower surface of the pulse wave sensor 100 as shown in FIG. have. In particular, when configured on the lower surface of the pulse wave sensor 100, as shown in Figure 4, the screw shaft 300 is preferably configured to be separated from the pulse wave sensor 100, the end of the screw shaft 300 is moved pressure The sensor 200 is configured to pressurize to control the operation of the motor 600 according to the pressing force. In this case, the pulse wave sensor 100 may be moved while being guided by the sound output device 1, and the deviation from the sound output device 1 should be prevented.

Referring to the outgoing, that is, the movement process of the pulse wave sensor 100 as described above, by manually rotating the rotating plate 400 exposed to the outside of the sound output device 1 directly in the forward or reverse direction, by the rotation of the rotating plate 400 As the screw shaft 300 is rotated, the pulse wave sensor 100 is moved in and out of the sound output device 1 while being drawn out or drawn out from the sound output device 1. In this case, when the motor 600 is installed on the rotating plate 400 as shown in FIG. 3, the pulse wave sensor 100 may be semi-automatically operated as described above by operating the switch 720 of the controller 700. When the pressure sensor 200 is configured in the pulse wave sensor 100 as shown in FIG. 4, the operation of the motor 600 is controlled by comparing the pressure applied to the pressure sensor 200 with a preset input pressure. It will be able to operate the pulse wave sensor 100 fully automatic.

In addition, as illustrated in FIG. 5, one surface or the bottom surface of the pulse wave sensor 100 may configure a compressed air bag, that is, an air bag 800.

When the airbag 800 is configured on the lower surface of the pulse wave sensor 100 as described above, the configuration of the pressure sensor 200 or the screw shaft 300 as in the above-described embodiment is preferably excluded from the pulse wave sensor 100. .

The airbag 800 is a state in which compressed air is filled to a degree that can have a normal elasticity, and is adhered and fixed to the lower surface of the pulse wave sensor 100 by an adhesive or the like to be supported by the sound output device 1 so that the pulse wave sensor 100 ) Is composed of a compression buffer that constantly supports elasticity.

Therefore, the pulse sensor 100 is elastically in contact with the skin by the air bag 800 to measure the pulse wave.

1 is a view showing a voice output device with a pulse wave sensor according to the present invention, Figure 1a is installed in the headset, Figure 1b is installed in the earset.

Figure 2 is a cross-sectional configuration of the pulse wave sensor according to the present invention.

3 is a cross-sectional view showing the installation of the pulse wave sensor according to the present invention.

Figure 4 is a block diagram showing an automatic pulse wave sensor and a controller according to the present invention.

5 is a configuration diagram showing an installation state of the pulse wave sensor and the airbag according to the present invention.

<Description of the symbols for the main parts of the drawings>

1: Sound output device 100: Pulse wave sensor

200: pressure sensor 300: screw shaft

400: rotating plate 500: axis

600: motor 700: controller

710: viewer 720: switch

800: airbag

Claims (10)

delete In the sound output device comprising a headset, an earset, and a hearing aid, A pulse wave sensor protruding from one surface thereof is installed to be embedded in the sound output device, and to measure and detect a pulse wave signal transmitted from a living body by a piezoelectric method; A piezoelectric transducer connected to the pulse wave sensor and converting a pulse wave signal into an electrical signal; A controller for controlling the pulse wave sensor and displaying a detected pulse wave signal in connection with a piezoelectric transducer; And a rotatable plate rotatably installed on the sound output device and coupled to the screw shaft of the pulse wave sensor to move the pulse wave sensor. The method of claim 2, The rotating plate is coupled to the shaft for rotating the rotating plate, the shaft is coupled to the motor for forward and reverse rotation of the shaft, the shaft and the rotating plate is driven by the driving of the motor, the sound output device for pulse wave detection. The method of claim 3, wherein The pulse wave sensor is a sound output device for detecting the pulse wave, characterized in that for measuring the contact pressure between the moving pulse wave sensor and the skin, the pressure sensor for stopping the operation of the motor when the contact pressure reaches the set pressure. The method of claim 3, wherein The controller has a sound output device for pulse wave detection, characterized in that the switch configured to drive the motor forward and reverse rotation. In the sound output device comprising a headset, an earset, and a hearing aid, A pulse wave sensor installed in the sound output device and measuring and detecting a pulse wave signal transmitted from a living body using a piezoelectric method; A piezoelectric transducer connected to the pulse wave sensor and converting a pulse wave signal into an electrical signal; An airbag installed in the pulse wave sensor to elastically support the pulse wave sensor; And a controller for controlling the pulse wave sensor and displaying a detected pulse wave signal connected to a piezoelectric transducer. The method according to claim 2, 3, 4, 5 or 6, The pulse wave sensor is a sound output device for pulse wave detection, characterized in that consisting of a piezoelectric sensor of the contact type or a non-contact piezoelectric microphone. The method according to claim 2, 3, 4, 5 or 6, The pulse wave sensor is a sound output device for pulse wave detection, characterized in that the contact type piezoelectric sensor and the non-contact piezoelectric microphone is configured at the same time. The method according to claim 2, 3, 4, 5 or 6, The controller outputs a pulse wave signal, that is, a pulse output or a sound output device for detecting a pulse wave, characterized in that the viewer configured to inform by voice. The method according to claim 2, 3, 4, 5 or 6, The piezoelectric material of the pulse wave sensor is composed of any one material selected from the group consisting of PZT (lead zirconium titanate-based material) ceramic, Pb-containing single crystal material, and PVDF (polyvinylidene fluoride) piezoelectric polymer material. Sound output device for detecting pulse waves.

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