JP2014150825A - Biological sound collection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve convenience in collection of biological sound.SOLUTION: A sound collection unit collects biological sound of a subject. A detection unit detects motion information representing the motion of a part of the body of the subject when the sound collection unit collects biological sound. A determination unit determines the state of a part of the body using the motion information detected by the detection unit.

Description

  The present invention relates to a biological sound collection device.

  A stethoscope is used as a tool for auscultation in medicine. Patent Document 1 includes a display and an information processing device (personal computer) in addition to a stethoscope that listens to lung sounds. Under the control of the information processing device, the display repeatedly displays the expansion and contraction display of balloon figures. Then, the timing of inspiration and expiration is instructed to the measurement subject, and the measurement subject views the image displayed on the display and breathes based on the display image. It is described that this makes it possible to accurately indicate the timing of expiration and inhalation. In Patent Document 1, a microphone is attached to the tip of a stethoscope, and the data captured by the microphone is guided to an information processing device, whereby the data captured by the microphone is classified into inspiratory sound data and expiratory sound data. It is described to do.

Japanese Patent Laid-Open No. 2007-190081

  However, since it is necessary to instruct the subject in order to capture the data by distinguishing the expiration sound and the inspiration sound, the subject is in an unconscious state even using the technique described in Patent Document 1. However, since the subject cannot be instructed of the timing of expiration and inhalation in the collection of the body sound of the subject, there is a drawback that data cannot be taken in distinction between the inspiration sound and the expiration sound. In addition, in the case of a subject (for example, an infant) who cannot recognize inspiration and expiration instructions, there is a drawback in that data cannot be captured by accurately distinguishing between inspiration sounds and expiration sounds. As described above, there is a problem that data cannot be taken in by distinguishing between inspiratory sounds and expiratory sounds, and convenience in collecting biological sounds is not sufficient.

  This invention is made | formed in view of said point, and makes it a subject to provide the biological sound collection apparatus which can improve the convenience in the case of collection of a biological sound.

  (1) The present invention has been made to solve the above problems, and one aspect of the present invention is a sound collection unit that collects a body sound of a subject, and the sound collection unit collects the body sound. A detection unit that detects motion information representing a motion of a part of the body of the subject at the time, and a determination unit that determines the state of the part of the body using the motion information detected by the detection unit. This is a biological sound collecting device.

  (2) One aspect of the present invention is the biological sound collection device, wherein the state of a part of the body is a breathing state, and the determination unit determines whether it is an inhalation state or an expiration state.

  (3) In one aspect of the present invention, the determination unit determines whether or not the subject's body is touched, and starts recording the respiratory state of the subject when it is determined that the subject's body is touched The biological sound collecting apparatus is characterized in that:

  (4) According to one aspect of the present invention, the determination unit determines whether or not the living body of the subject has been contacted, and starts determining the respiratory state of the subject when contacting the body of the subject. This is a biological sound collecting device.

  (5) In one aspect of the present invention, the detection unit further includes: an imaging unit that captures a part of the body of the subject; and a motion detection unit that detects the motion information from the video captured by the imaging unit. It is a biological sound collection device characterized by comprising.

  According to the present invention, it is possible to improve convenience when collecting body sounds.

It is the schematic of an example of the usage condition of the biological sound collection device which concerns on the 1st Embodiment of this invention. It is a schematic block diagram which shows an example of a structure of the biological sound collection device which concerns on this embodiment. It is the external view and sectional drawing which show an example of arrangement | positioning of the state detection part in the biological sound collection device which concerns on this embodiment. It is an external view which shows an example of arrangement | positioning of the imaging part with which the state detection part in the biological sound collection device which concerns on the 3rd Embodiment of this invention is provided. It is a flowchart which shows an example of the operation | movement process of the biological sound collection device which concerns on the 1st Embodiment of this invention. It is a schematic block diagram which shows an example of a structure of the biological sound collection device which concerns on the 2nd Embodiment of this invention. It is a schematic block diagram which shows an example of a structure of the biological sound collection device which concerns on the 3rd Embodiment of this invention. It is the schematic which shows an example of the picked-up image of the imaging part with which the use condition of the biological sound collection device which concerns on this embodiment, and the state detection part in a biological sound collection device is provided.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.
In the first embodiment, a case will be described in which the body sound collection device 1 detects a subject's movement (muscle contraction and relaxation) using a pressure sensor and distinguishes the types of body sounds.
FIG. 1 is a schematic diagram illustrating an example of a usage state of the biological sound collection apparatus 1 according to the first embodiment of the present invention. The upper part of FIG. 1 shows a biological sound collection situation S1, and the lower part of FIG. 1 shows an auscultation situation S2.

  In the biological sound collection status S1 in the biological sound collection system, any one of the doctor H1, the medical staff H2, and the subject H3 (hereinafter referred to as a user) collects the biological sound of the subject H3. The sound collection device 1 (hereinafter also referred to as “chest piece”) is brought into contact with the test portion of the subject H3. For example, in order to collect lung sounds, the biological sound collection device 1 determines the type of biological sound such as exhalation and inspiration by detecting the pressure applied to the pressure sensor unit included in the biological sound collection device 1. The subject H3 inhales or exhales, and the body sound collection device 1 collects the body sound of the subject H3 generated at that time.

  The biological sound collection device 1 outputs the collected biological sound of the subject H3 to, for example, an earphone 2 (hereinafter also referred to as “earpiece”) connected to the biological sound collection device 1. The doctor H1 listens to the body sound of the subject H3 collected by the body sound collection device 1 using the earphone 2, and auscultates the body sound of the subject H3.

In each of the following embodiments, the biological sound collection device 1 and the earphone 2 are connected and described, but the present invention is not limited to this.
For example, the user collects the biological sound of the subject H3 using only the biological sound collection device 1, and transmits the collected biological sound of the subject H3 to the terminal device 3 (for example, a personal computer) using wired or wireless. When the terminal device 3 acquires the biological sound of the subject H3 from the biological sound collection device 1, the biological sound is stored in the storage device. As shown in the auscultation state S2, the doctor H1 listens to the body sound of the subject H3 by playing back the body sound stored in the storage device in real time or at a later time using the terminal device 3, and the terminal device. A waveform representing the body sound may be displayed on a display provided in 3 for diagnosis.

FIG. 2 is a schematic block diagram illustrating an example of the configuration of the biological sound collection apparatus 1 according to the present embodiment. FIG. 2 also shows the earphone 2.
The biological sound collection device 1 includes a recording unit 11, a control unit 12, a state detection unit 14, and a D / A unit 15. The biological sound collection device 1 has a configuration of a general known biological sound collection device in addition, but the description and illustration thereof are omitted.

  When the recording unit 11 receives an instruction signal instructing to start recording from the control unit 12, the recording unit 11 collects a body sound (for example, lung sound, bending and stretching of a joint), and digital data representing the collected body sound Is generated. The recording unit 11 performs data processing on the generated digital data and stores it. Detailed description of the recording unit 11 will be described later.

  Based on the detection signal (for example, the signal output from the state detection unit 14), the control unit 12 outputs an instruction signal for instructing the start or end of recording to the recording unit 11. Based on the detection signal, the control unit 12 causes the recording unit 11 to record a first biological sound (for example, a biological sound generated by inspiration or a biological sound generated by bending a joint). Based on the detection signal, the control unit 12 causes the recording unit 11 to record a second biological sound (for example, a biological sound generated by expiration or a biological sound generated by extending a joint). A detailed description of the control unit 12 will be described later.

The state detection unit 14 detects a movement (muscle contraction and relaxation) of a part of the body of the subject H3 when the subject H3 generates a body sound, and generates a detection signal (movement information). The state detection unit 14 outputs a detection signal corresponding to the movement of the subject H3 to the control unit 12. A detailed description of the state detection unit 14 will be described later.
The D / A unit 15 converts the digital signal indicating the recorded or collected biological sound input from the recording unit 11 into an analog signal. The D / A unit 15 outputs the converted analog signal to the earphone 2, for example, an earpiece, an earphone, a headphone, a speaker, the terminal device 3, and the like.

The recording unit 11 includes a sound collection unit 112, a microphone 113, an A / D unit 114, a data processing unit 115, and a memory 116. The sound collection unit 112 includes a diaphragm 111.
The diaphragm 111 vibrates in response to a biological sound, for example, an inspiratory sound or an expiratory sound, by contacting the subject's test part (living body). The sound collection unit 112 collects a biological sound according to the vibration of the diaphragm 111. The sound collection unit 112 outputs the collected biological sound to the microphone 113.
The microphone 113 generates an analog signal of biological sound collected by the sound collection unit 112.
The A / D unit 114 converts the analog signal generated by the microphone 113 into a digital signal. The A / D unit 114 outputs the converted digital signal to the data processing unit 115.

The data processing unit 115 quantizes the digital signal input from the A / D unit 114. Further, the data processing unit 115 changes the frequency characteristic of the digital signal. For example, the data processing unit 115 performs data processing such as emphasizing or reducing a specific frequency band of the digital signal. The data processing unit 115 stores the data-processed digital signal in the memory 116. Further, the data processing unit 115 outputs the digital signal subjected to data processing to the D / A unit 15.
The memory 116 stores the digital signal input from the data processing unit 115.

  The control unit 12 includes a state determination unit 121. The state determination unit 121 determines the state of the living body of the subject H3 based on the detection signal input from the state detection unit 14. When the state determination unit 121 determines that the detection signal input from the state detection unit 14 is in contact with the body (living body) of the subject H3, the state determination unit 121 outputs an instruction signal instructing the recording unit 11 to start sound collection. . On the other hand, the state determination unit 121 does not operate the recording unit 11 when determining that the detection signal input from the state detection unit 14 is not in contact with the body (living body) of the subject H3. When it is determined that the state of the living body of the subject H3 is the first state (for example, an inhalation state, a state where a joint is bent, etc.) using the detection signal input from the state detection unit 14, the state determination unit 121 stores the memory An area for storing the first body sound is secured in 116, and a first timing label (first chapter) indicating the first body sound is set. And the control part 12 memorize | stores the 1st biological sound (For example, the biological sound produced by inhalation) in the memory 116. FIG.

  Next, the state determination unit 121 determines again the state of the living body using the detection signal input from the state detection unit 14. When the detection signal input from the state detection unit 14 is used to determine that the subject H3 is in the second state (for example, exhalation state, joint extension state, etc.), the state determination unit 121 stores the second state in the memory 116. An area for storing the body sound is secured, and a second timing label (second chapter) indicating the second body sound is set. And the control part 12 memorize | stores the 2nd biological sound (For example, the biological sound produced by exhalation) in the memory 116. FIG.

The state detection unit 14 includes a pressure sensor unit 141.
The pressure sensor unit 141 is provided on a surface where the diaphragm 111 of the housing 10 of the biological sound collection device 1 comes into contact with the living body, and detects the pressure from the living body when the biological sound collection device 1 comes into contact with the living body. A corresponding detection signal is generated. The pressure sensor unit 141 outputs the generated detection signal to the control unit 12.

  In the present embodiment, it is described that the D / A unit 15 is included in the biological sound collection device 1. However, for example, the biological sound collection device 1 does not include the D / A unit 15, and the earphone 2, You may comprise as another apparatus (for example, terminal device 3) containing the D / A part 15. FIG. In addition, the state detection unit 14 outputs the degree of reliability of the detected detection signal (for example, a digital signal, which is expressed by using 8-bit numerical data) to the control unit 12, and the control unit 12 The recording unit 11 may record (store) the degree of reliability and the body sound in association with each other.

FIG. 3 is an external view and a cross-sectional view illustrating an example of the arrangement of the state detection unit 14 in the biological sound collection device 1 according to the present embodiment.
FIG. 3 includes a housing 10 having an internal configuration of the schematic block diagram of the biological sound collection device 1 illustrated in FIG. 2, and a sound collection unit 112 disposed at one end of the housing 10. The sound collection unit 112 is installed such that the diaphragm 111, the diaphragm holding member 16 that supports the diaphragm 111 around the casing 10 and supports the diaphragm 111, and a part of the diaphragm 111 are exposed on the same plane. Of the diaphragm holding member 16, the pressure sensor unit 141 attached to the diaphragm holding member 16 on the contact surface portion 17 which is a portion in contact with the living body surface is provided.

The pressure sensor unit 141 detects the pressure received by the biological sound collection device 1 from the living body by contacting the living body of the subject H3. When the pressure sensor unit 141 detects the pressure, it outputs a detection signal (motion information) corresponding to the pressure to the control unit 12. Specifically, the detection signal (motion information) is, for example, numerical data when an analog signal output from the pressure sensor unit 141 is converted into a digital signal. Thereby, the biological sound collection device 1 performs the collection and recording of the biological sound and the distinction between the first biological sound and the second biological sound. Specifically, for example, while the pressure sensor unit 141 is in contact with the living body (while the pressure is equal to or greater than a certain value (threshold)), a state where sound collection and recording are possible is maintained. When the pressure sensor unit 141 is not in contact with the living body (while the pressure is less than a certain value (threshold)), the sound collection and recording are switched to an invalid state.
In the present embodiment, the state detection unit 14 uses a pressure sensor, but various sensors such as a gyro sensor, an acceleration sensor, an angular velocity sensor, and a pressure sensor may be used. For example, the case where the state detection unit 14 uses an acceleration sensor will be described in the second embodiment.

FIG. 5 is a flowchart showing an example of operation processing of the biological sound collection apparatus 1 according to the present embodiment.
In step ST101, the state determination unit 121 determines whether the biological sound collection device 1 is in contact with the living body of the subject H3 based on the detection signal input from the pressure sensor unit 141 of the state detection unit 14. The state determination unit 121 determines that the biological sound collection device 1 is in contact with the subject H3 when a detection signal indicating a value at the time of contact with the living body (for example, a pressure of 5 or more) is input. When it is determined that the biological sound collection device 1 is in contact with the subject H3, the process proceeds to step ST102, and the control unit 12 determines whether or not the recording unit 11 is recording the biological sound. On the other hand, if it is determined that the body sound collection device 1 is not in contact with the subject H3 (for example, a pressure less than 5), the process proceeds to step ST110, and the control unit determines whether or not the recording unit 11 is recording the body sound. judge.

In step ST102, when the recording unit 11 is recording a body sound, the process proceeds to step ST104, where the state determination unit 121 is based on a detection signal corresponding to the pressure detected by the pressure sensor unit 141 of the state detection unit 14. It is determined whether or not the first body sound, for example, inhalation of the subject H3 has been started. On the other hand, if the recording unit 11 is not recording a body sound, the process proceeds to step ST103, and the control unit 12 outputs an instruction signal instructing the recording unit 11 to start recording.
In step ST103, when the instruction signal instructing the start of recording is input from the control unit 12, the recording unit 11 starts recording. Thereby, the biological sound collection device 1 can automatically start recording of the biological sound.

  In step ST104, the state determination unit 121 determines that intake is started when the detection signal input from the pressure sensor unit 141 is, for example, a detection signal indicating an increase in pressure. If it is determined that the intake is started, the process proceeds to step ST105. On the other hand, when it is determined that the intake is not started, the process proceeds to step ST107, and the state determination unit 121 determines the second based on the detection signal corresponding to the pressure detected by the pressure sensor unit 141 of the state detection unit 14. It is determined whether or not a body sound, for example, exhalation of the subject H3 has started.

In step ST105, the control unit 12 secures an area for storing the first body sound in the memory 116, sets a first timing label (first chapter) indicating the first body sound, and proceeds to step ST106. move on.
In step ST106, the state determination unit 121 determines whether or not the inhalation of the subject H3 has ended. Specifically, the state determination unit 121 determines that the intake has ended when the detection signal output from the pressure sensor unit 141 of the state detection unit 14 stops increasing, for example, when the detection signal indicating an increase in pressure stops. . When the state determining unit 121 determines that the inspiration has ended, the process proceeds to step ST107, and based on the detection signal corresponding to the pressure detected by the pressure sensor unit 141 of the state detecting unit 14, the second biological sound, for example, the subject It is determined whether H3 has started exhalation. On the other hand, if it is determined that the inhalation has not ended, state determination unit 121 repeats the process of step ST106.

In step ST107, the state determination part 121 determines with the expiration having started, when the detection signal input from the pressure sensor part 141 is a detection signal showing the fall of a pressure. When it is determined that exhalation has started, the process proceeds to step ST108. On the other hand, when it is determined that exhalation has not been started, the process returns to step ST101.
In step ST108, the control unit 12 secures an area for storing the second body sound in the memory 116, sets a second timing label (second chapter) indicating the second body sound, and goes to step ST109. move on.

  In step ST109, the state determination unit 121 determines whether or not the subject H3 has expired. Specifically, the state determination unit 121 determines that expiration has ended when the detection signal output from the pressure sensor unit 141 of the state detection unit 14 stops, for example, the detection signal indicating a decrease in pressure. . If state determination section 121 determines that expiration has ended, it returns to step ST101. On the other hand, if it is determined that expiration has not ended, state determination unit 121 repeats the process of step ST109.

In Step ST110, when it is determined that the biological sound collection device 1 is not in contact with the subject H3, the control unit 12 determines whether or not the recording unit 11 is recording the biological sound. When the recording unit 11 is recording a biological sound, the process proceeds to step ST111. On the other hand, when the recording unit 11 is not recording the body sound, the process returns to step ST101.
In step ST <b> 111, the control unit 12 outputs an instruction signal for instructing to stop recording of the body sound to the recording unit 11. Thereby, the biological sound collection device 1 can automatically end the recording of the biological sound.

  In the present embodiment, for example, when the detection signal indicating the pressure becomes 5 or more, the state determination unit 121 immediately starts the process after step ST102, and the detection signal indicating the pressure becomes less than 5 It is desirable that the configuration proceeds to step ST110 when a predetermined time or more has elapsed. Further, the case where one pressure sensor 141 is used has been described, but a plurality of pressure sensors may be used. Further, although the pressure sensor 141 is described as being provided in the diaphragm holding member 16, a configuration provided in the center of the diaphragm 111 may be employed. In addition, the rise / stop / fall of the detection signal indicating the pressure of the pressure sensor 141 varies depending on the individual depending on how the biological sound collection device 1 is applied to the body of the subject H3 by the user. It is desirable to be able to initialize (calibrate) the state and the state of inspiration.

  As described above, according to the present embodiment, by using the pressure sensor unit 141, it is possible to determine whether the body sound is generated when inhaling the body sound from the change in the detection signal representing the pressure received by the body sound collecting apparatus 1 from the subject H3. Or the sound generated when the joint is bent or the sound generated when the joint is extended, and the biological sound collecting device 1 automatically starts recording the biological sound of the subject H3. Since the test can be completed and the subject H3 can capture data by distinguishing the body sound, the convenience in collecting the body sound can be improved.

(Second Embodiment)
Hereinafter, a modification of the second embodiment of the present invention will be described in detail with reference to the drawings.
In the second embodiment, a case will be described in which the biological sound collecting apparatus 1A collects biological sounds using an acceleration sensor and a switch unit.

FIG. 6 is a schematic block diagram showing an example of the configuration of the biological sound collection apparatus 1A according to the present embodiment.
When the configuration of the biological sound collection device 1 according to the first embodiment is compared with the configuration of the biological sound collection device 1A according to the present embodiment, the configuration of the state detection unit 14A and the switch unit 13 are different. Since other configurations are the same, description thereof is omitted.

  When operated by the user, the switch unit 13 generates a detection signal indicating that the user has operated. The switch unit 13 outputs the detection signal to the control unit 12. The state determination unit 121 determines that the subject H3 is in contact with the body of the subject H3 while the detection signal is input from the switch unit 13, and the control unit 12 operates the recording unit 11. Specifically, for example, the switch is kept on while the switch unit 13 is pressed by the user. When the user stops pressing from the switch unit 13, the switch is turned off.

  The switch unit 13 may be a push-down switch, a capacitance-type switch, or a switch using various sensors such as a press sensor, an infrared ray, or an optical sensor. . Further, the sound collecting unit 112 is configured such that the diaphragm 111, the diaphragm holding member 16 that supports the diaphragm 111 around the casing 10A and supporting the diaphragm 111, and a part of the diaphragm 111 are exposed on the same plane. A configuration may be provided that includes a contact surface portion 17 that is a portion in contact with the surface of the living body among the diaphragm holding member 16 that is installed on the switch, and a switch portion 13 that has a conduction point and is attached to the diaphragm holding member 16. Furthermore, the sound collecting unit 112 includes a diaphragm 111 disposed at one end of the housing 10A and a diaphragm holding member 16 that holds the diaphragm 111 on the housing 10A, and the housing in which the diaphragm 111 is not disposed. The switch unit 13 may be disposed on the outer periphery of the body 10A.

The state detection unit 14A includes an acceleration sensor unit 142.
The acceleration sensor unit 142 is provided inside the housing 10A, and detects the acceleration of the biological sound collection device 1A from the change in position of the weight (mass, mass) due to acceleration. The acceleration sensor unit 142 outputs a detection signal (motion information) corresponding to the detected acceleration to the control unit 12. For example, when the acceleration sensor unit 142 is a three-axis acceleration sensor, the detection signal (motion information) is numerical data obtained by converting an analog signal of acceleration in each direction of the X axis, the Y axis, and the Z axis into a digital signal ( Hereinafter, it is referred to as an acceleration value). At this time, the state determination unit 121 determines the state of the living body from temporal changes in acceleration values in the X axis, Y axis, and Z axis directions.

Specifically, the state where the acceleration value starts to be applied in the direction away from the body of the subject H3 is determined as the state where the inspiration is started, and the state where the change in the acceleration value is eliminated is determined as the state where the inspiration is finished. In addition, a state in which the acceleration value starts to be applied in the direction approaching the body of the subject H3 is determined as a state in which exhalation is started, and a state in which the change in the acceleration value is lost is determined as a state in which exhalation has ended.
Although the case where the acceleration sensor unit 142 is used has been described in the present embodiment, a pressure sensor may be used, or a plurality of sensors, for example, a pressure sensor and an acceleration sensor may be used. Thereby, the precision which detects the motion of the test subject H3 when the test subject H3 produces a body sound can be improved, and the precision which distinguishes exhalation and inhalation can be improved.

  As described above, according to the present embodiment, in addition to the effects of the first embodiment, the provision of the switch unit 13 widens the range in which the types of sensors that can be used by the state detection unit 14A can be selected, and is inexpensive. And the freedom degree in design of the biological sound collection device 1A can be improved.

(Third embodiment)
Hereinafter, the third embodiment of the present invention will be described in detail with reference to the drawings.
In the present embodiment, a case will be described in which the body sound collection device 1 </ b> B distinguishes the types of body sounds based on the captured video captured by the imaging unit included in the switch unit 13 and the state detection unit 14 </ b> B.

FIG. 7 is a schematic block diagram showing an example of the configuration of the biological sound collection device 1B according to the third embodiment of the present invention.
When the configuration of the biological sound collection device 1 according to the first embodiment shown in FIG. 2 is compared with the configuration of the biological sound collection device 1B according to the present embodiment, the switch unit 13 and the state detection unit 14B are different. Since other configurations are the same, description thereof is omitted. Moreover, since the switch part 13 which concerns on this embodiment is the structure similar to the switch part 13 which concerns on 2nd Embodiment, description is abbreviate | omitted.

The state detection unit 14B includes an imaging unit 143 and a motion detection unit 144.
When the imaging unit 143 receives a detection signal from the switch unit 13 via the control unit 12 (a signal indicating that the user has changed the switch unit 13 from the off state to the on state and started the operation), the subject An image of the body part of the subject H3 that changes when the body sound such as the face, chest, shoulder, and abdomen of H3 is generated is taken. The imaging unit 143 outputs the captured video to the motion detection unit 144.
The motion detection unit 144 analyzes the video input from the imaging unit 143, and detects the body motion of the subject H3 when the subject H3 generates a body sound using a known analysis method.
Note that the motion detection unit 144 may be dedicated hardware that analyzes video, or may analyze video using software. When the video is analyzed by software, the control unit 12 may execute the function of the motion detection unit 144. In this case, the motion detection unit 144 detects a motion from the analyzed video, and outputs a detection signal corresponding to the motion to the control unit 12.
The state detection unit 14B is included in the biological sound collection device 1B. However, the state detection unit 14B may be connected to the biological sound collection device 1B by wire or wirelessly, or as a state detection piece as another device. May be configured

FIG. 4 is an external view showing an example of the arrangement of the state detection unit 14B in the biological sound collection apparatus 1B according to the present embodiment.
FIG. 4 includes a housing 10B having a schematic block diagram of the biological sound collection device 1B shown in FIG. 7 as an internal configuration, a sound collection unit 112, and an imaging unit 143 of the state detection unit 14B. The sound collection unit 112 includes a vibration plate 111 disposed at one end of the housing 10B and a vibration plate holding member 16 that holds the vibration plate 111 in the housing 10B, and the housing 10B in which the vibration plate 111 is not disposed. A switch unit 13 is disposed around the outer periphery of the switch.

  When operated by the user, the switch unit 13 generates a detection signal indicating that the user has operated, and outputs the detection signal to the control unit 12. When the detection signal is input, the control unit 12 causes the imaging unit 143 of the state detection unit 14B to photograph a part of the body of the subject H3. The imaging unit 143 is movable, for example, and can adjust the vertical and horizontal positions so that the body part of the subject H3 can be photographed as the body sound of the subject H3 is generated.

FIG. 8 is a schematic diagram illustrating an example of a captured image of the imaging unit 143 included in the state detection unit 14B in the biological sound collection device 1B according to the present embodiment.
The use state S3 of the biological sound collection device 1B is an example when photographing around the lower jaw of the imaging unit 143 subject H3. The user brings the diaphragm 111 and the diaphragm holding member 16 into contact with the living body (for example, the chest) of the subject H3 using the biological sound collection device 1B. At this time, the imaging unit 143 of the biological sound collection device 1B images a part of the body of the subject H3 (for example, from the chest to the lower jaw).

  The image G1 is a schematic diagram when the imaging unit 143 images the lower part of the face of the subject H3, for example, the vicinity of the lower jaw from the chest of the subject H3. In the image G1, a part HF of the contour of the lower jaw of the subject H3 is shown at the position P1. When the state of the image G1 changes to the state of the image G2, that is, when the motion detection unit 144 detects the movement of the contour point where the part HF of the lower jaw contour of the subject H3 has moved from the position P1 to the position P2, The state determination unit 121 determines that the subject H3 has started inspiration. When the state of the image G2 changes to the state of the image G3, the moving direction of one contour point of the part HF of the lower jaw contour of the subject H3 in the image G2 and the image G3 changes from the position P1 to the position P2. And the direction of movement from the position P1 to the position P3 is the same direction, and at the position P3, when the change of the position of the part HF of the lower jaw contour of the subject H3 stops, the state determination unit 121 displays the image G3. It is determined that the inhalation of the subject H3 has ended.

  When the change in which the position of the partial HF of the lower jaw contour of the subject H3 moves from the position P3 to the position P4 starts again in the image G4, the state determination unit 121 determines that the subject H3 has started expiration. In the image G5, the partial HF of the lower jaw contour of the subject H3 moves from the position P3 to the position P5, and the movement of the contour point of the partial HF of the lower jaw contour of the subject H3 stops at the position P5. The determination unit 121 determines that the exhalation of the subject H3 has ended. The state determination unit 121 determines inspiration and expiration according to a change in the position of the contour point in the image of the partial HF of the contour of the lower jaw of the subject H3.

In the present embodiment, the lower part of the face of the subject H3 has been described as an example. However, the present invention is not limited to this. For example, the chest is photographed, and the types of biological sounds are distinguished by bulging or deflating the chest. Alternatively, the shoulder part may be photographed, and the type of biological sound may be distinguished by the upper and lower sides of the shoulder.
As described above, according to the present embodiment, in addition to the same effects as those of the second embodiment, the imaging unit 143 captures a part of the body of the subject H3, and distinguishes the type of biological sound according to the captured video. it can.

  In each of the above-described embodiments, the state detection units 14, 14A, 14B may be configured by combining a plurality of types of sensors, imaging units, and the like. Thereby, for example, since stereoscopic vision is possible, it is possible to improve the detection accuracy of the movement of the body when the body sound of the subject H3 is generated. In addition, the state detection units 14, 14A, 14B are included in the configuration of the biological sound collection devices 1, 1A, 1B, but may be configured as a state detection device having the functions of the state detection units 14, 14A, 14B. Good. In this case, the detection signal may be notified to the biological sound collection devices 1, 1A, 1B using wired or wireless communication.

  In addition, you may make it implement | achieve a part or all of the biological sound collection device 1, 1A, 1B in each embodiment mentioned above with a computer. In that case, the program for realizing the control function may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read by a computer system and executed. Here, the “computer system” is a computer system built in the biological sound collection devices 1, 1A, 1B, and includes an OS and hardware such as peripheral devices.

  The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Furthermore, the “computer-readable recording medium” is a medium that dynamically holds a program for a short time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line, In such a case, a volatile memory inside a computer system serving as a server or a client may be included and a program that holds a program for a certain period of time.

  The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

  Moreover, you may implement | achieve part or all of the biological sound collection device 1, 1A, 1B in embodiment mentioned above as integrated circuits, such as LSI (Large Scale Integration). Each functional block of the biological sound collection device 1, 1A, 1B may be individually made into a processor, or a part or all of them may be integrated into a processor. Further, the method of circuit integration is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor. Further, in the case where an integrated circuit technology that replaces LSI appears due to progress in semiconductor technology, an integrated circuit based on the technology may be used.

  As described above, the embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to the above, and various design changes and the like can be made without departing from the scope of the present invention. It is possible to

  The sound collection unit 112 collects the body sound of the subject H3. A detection part (state detection part 14, 14A, 14B) detects the motion information showing the motion of a part of test subject H3 when a sound collection part collects a body sound. The determination unit (state determination unit 121) determines the state of a part of the body using the motion information of the subject H3 detected by the detection unit (state detection units 14, 14A, 14B).

  The detection units (state detection units 14, 14 </ b> A, 14 </ b> B) output detection signals (motion information) to the control unit 12.

  The detection unit (state detection unit 14B) includes an imaging unit 143 that captures a part of the body of the subject H3 when the sound collection unit 112 collects the body sound, and an image of the body of the subject H3 that is captured by the imaging unit 143. And a motion detection unit 144 that detects the position of a part of the contour as motion information.

  The state of a part of the body is a breathing state, and the determination unit (state determination unit 121) determines whether it is an inhalation state or an expiration state.

The determination unit (state determination unit 121) determines whether or not it has contacted the body (living body) of the subject H3, and starts determining the respiratory state when it has contacted the body (living body) of the subject H3.
The determination unit (state determination unit 121) determines whether or not the body of the subject H3 is touched, and starts recording the breathing state of the subject H3 when it is determined that the body of the subject H3 is touched.

  The biological sound collection device (1, 1A, 1B) further includes a recording unit 11 that records the biological sound. The recording unit 11 distinguishes and records the body sound based on the state of a part of the body determined by the determination unit (state determination unit 121).

  The sound collection unit 112 includes a vibration plate 111 that comes into contact with a living body and vibrates in accordance with the sound of the living body, and a vibration plate holding member 16 that surrounds and supports the same edge portion of the vibration plate 111. 14, 14 </ b> A, 14 </ b> B) are attached to the diaphragm holding member 16 to detect movement information of the subject H <b> 3, and the determination unit (state determination unit 121) is the detection unit (state detection unit 14, 14 </ b> A, 14 </ b> B). The state of a part of the body is determined according to the detected motion information.

  The biological sound collection method includes a sound collection step for collecting a biological sound of a subject, a detection step for detecting motion information representing a movement of a part of the body of the subject H3 when collecting the biological sound in the sound collection step, and a detection A determination step of determining a state of a part of the body using the motion information detected in the step.

DESCRIPTION OF SYMBOLS 1, 1A, 1B ... Living body sound collection device, 2 ... Earphone, 3 ... Terminal device, 10, 10A, 10B ... Case, 11 ... Recording part, 111 ... Diaphragm 112 ... Sound collecting unit 113 ... Microphone 114 ... A / D unit 115 ... Data processing unit 116 ... Memory 12 ... Control unit 121 ... State Determining unit, 13 ... switch unit, 14, 14A, 14B ... state detecting unit, 141 ... pressure sensor unit, 142 ... acceleration sensor unit, 143 ... imaging unit, 144 ... movement Detection part, 15 ... D / A part, 16 ... diaphragm holding member, 17 ... contact surface part

Claims (5)

A sound collection unit for collecting the body sound of the subject;
A detection unit for detecting movement information representing a movement of a part of the body of the subject when the sound collection unit collects the biological sound;
A determination unit that determines a state of a part of the body using the motion information detected by the detection unit;
A biological sound collection device comprising: The state of the body part is a breathing state;
The biological sound collection device according to claim 1, wherein the determination unit determines whether the inhalation state or the expiration state. The said determination part determines whether it contacted the said test subject's body, and when it determines with having contacted the said test subject's body, the recording of the said test subject's respiratory condition is started. The biological sound collection device described. The said determination part determines whether it contacted the said test subject's body, and when it determines with having contacted the said test subject's body, the determination of the said test subject's respiratory state is started. The biological sound collection device according to claim 3. The detector is
An imaging unit for photographing a part of the subject's body;
A motion detection unit that detects the motion information from the video captured by the imaging unit;
The biological sound collection device according to any one of claims 1 to 4, further comprising:

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