JP6238187B2 - Safety confirmation notification system using pulse measuring device - Google Patents

Description

The present invention relates to a safety confirmation notification system using the pulse rate measuring device.

Conventionally, a system for confirming safety by utilizing pulse detection is known (see Patent Document 1).
The system described in Patent Document 1 includes a safety confirmation device that includes a means for measuring a pulse, and confirms the safety of the user by using a measurement result of the pulse.

  The means for measuring the pulse applies the infrared light emitted from the infrared light emitting diode to the blood vessel and measures the amount of absorption or reflection from the blood vessel with a phototransistor to detect the pulse. Therefore, when the user is not at rest, the optical axis of the infrared rays is shifted and noise is added to the pulse wave signal, and there is a problem that the pulse cannot be measured accurately.

  Therefore, the safety confirmation device further includes means for measuring the movement of the user's body, and when there is a movement of the user's body, the safety is determined based on the measurement result of the movement of the user's body. However, when there is no movement of the user's body, safety is determined based on the measurement result of the user's pulse.

  However, since the safety confirmation device includes means for measuring the pulse and means for measuring the movement of the user's body, there is a problem that the device configuration becomes complicated.

JP 2006-141902 A

Therefore, the present invention provides a safety confirmation notification system that can simplify the device configuration for confirming safety by using a pulse measurement device that can accurately measure a pulse without being affected by the user's body movement. The purpose is to provide.

In order to achieve the above object, the present invention provides:
A body conduction sound detecting means for detecting an arterial sound or a heart sound and acquiring a pulse signal;
Data processing means having a pulse rate calculation unit for calculating a pulse rate based on a pulse signal acquired by the body conduction sound detection means;
A safety confirmation notification system using a pulse measuring device comprising:
The body sound detection means is a body sound sensor having a condenser microphone sealed with soft silicon,
The data processing means is a terminal with a GPS function, and further includes a safety determination unit that determines the safety of the user based on the pulse rate calculated by the pulse rate calculation unit,
The data processing unit further includes a signal processing unit that generates autocorrelation data by performing autocorrelation processing on the pulse signal acquired by the body conduction sound detection unit, and the pulse rate calculation unit is generated by the signal processing unit. It is a safety confirmation notification system for notifying the administrator of the location information and safety information of the user by communication means, wherein the pulse rate is calculated based on the autocorrelation data .

  Here, in the present invention, “pulse” is defined as including “heartbeat”.

The pulse measuring device used in the present invention preferably transmits a pulse signal acquired by the body conduction sound detecting means to the data processing means by wireless communication means.

The pulse measuring device used in the present invention includes a body conduction sound detecting means for detecting an arterial sound or a heart sound and acquiring a pulse signal, so that the pulse is accurately measured without being influenced by the body movement of the user. be able to.
Further, the pulse measuring device used in the present invention, the body conduction sound detection means is a body conduction sensor having a condenser microphone sealed with soft silicon, and by sealing the capacitor microphone with the soft silicon, When detecting an arterial sound or a heart sound, the air conduction sound is blocked and the body conduction sound is easily extracted.
Furthermore, in the pulse measuring device used in the present invention, when the data processing means further includes a signal processing unit that performs autocorrelation processing on the pulse signal acquired by the body conduction sound detecting means, the pulse signal includes noise. However, since the periodic signal can be extracted from the autocorrelation data of the pulse signal, the pulse can be measured more accurately.
Therefore, since the safety confirmation reporting system using the pulse measuring device of the present invention uses a pulse measuring device that can accurately measure the pulse without being affected by the body movement of the user, It is possible to simplify the apparatus configuration for confirming safety without requiring a means for measuring the body movement.
Further, in the safety confirmation notification system using the pulse measuring device of the present invention, since the data processing means constituting the pulse measuring device is a terminal with a GPS function, the safety information of the user together with the location information is managed by the administrator. Can be notified.

If the pulse measuring device used in the present invention transmits the pulse signal acquired by the body conduction sound detecting means to the data processing means by wireless communication means, the body guiding that the user will wear on the body is provided. A device having sound detection means can be reduced in size and weight.

The block diagram which shows an example of the pulse measuring device used by this invention. Schematic illustration of Karadashirubeon sensor used in pulse measuring apparatus used in the present invention. The block diagram which shows the other example of the pulse measuring device used by this invention. The graph of the pulse signal acquired by detecting a radial artery sound with a body-conduction sound sensor, and the autocorrelation data obtained by performing autocorrelation processing on the pulse signal. The graph of the pulse signal acquired by detecting a carotid artery sound with a body-conduction sound sensor, and the autocorrelation data obtained by performing autocorrelation processing on the pulse signal. The graph of the pulse signal acquired by detecting a heart sound with a body-conduction sound sensor, and the autocorrelation data obtained by performing autocorrelation processing on the pulse signal. The block diagram which shows an example of the safety confirmation notification system of this invention. The image figure of the safety confirmation notification system shown in FIG.

  Embodiments of the present invention will be described with reference to the drawings.

<Pulse measurement device>
FIG. 1 is a block diagram showing an example of a pulse measuring device used in the present invention.
The pulse measuring device 1 used in the present invention is integrally provided with a body conduction sound detecting means 2, a data processing means 3, and a display means 4.

  The body conduction sound detection means 2 uses a body conduction sound sensor 21 that detects arterial sounds and heart sounds and acquires a pulse signal. Here, in the present invention, “pulse” includes “heartbeat”.

FIG. 2 is a schematic explanatory diagram of the body conduction sound sensor 21 used in the pulse measuring device used in the present invention.
The body sound sensor 21 is configured by attaching an electret condenser microphone (ECM) 22 on a vinyl chloride disk 23 and sealing the ECM 22 with a filler 24 filled in an acrylic cylinder 25. Is done.

  Soft silicon can be used for the filler 24. If soft silicon is used for the filler 24, air conduction sound is blocked and body conduction sound can be easily extracted.

  The data processing unit 3 includes a signal processing unit 31 that generates autocorrelation data by performing autocorrelation processing on the pulse signal acquired by the body conduction sensor 21, and autocorrelation data generated by the signal processing unit 31. A computer such as a microcomputer having a pulse rate calculation unit 32 for calculating the pulse rate is used.

  The pulse rate calculation unit 32 calculates the pulse rate by, for example, obtaining a peak period in the autocorrelation data or counting the number of times that the autocorrelation data value exceeds a preset threshold value. Can do.

  The display means 4 uses a liquid crystal display or the like to display the pulse rate calculated by the pulse rate calculation unit 32.

The pulse measuring device 1 shown in FIG. 1 is suitable for, for example, a wrist-worn type (watch type) because it includes the body conduction sound detecting means 2, the data processing means 3, and the display means 4 as one body.

Next, FIG. 3 is a block diagram showing another example of a pulse measuring device used in the present invention.
The pulse measuring device 11 shown in FIG. 3 is different from the pulse measuring device 1 shown in FIG. 1 in that the body conduction sound detecting means 12, the data processing means 13, and the display means 14 are separated.

3 is provided with a transmitter 26 in the body conduction sound detection means 12 and a receiver 33 in the data processing means 13, and the pulse signal obtained by the body conduction sound detection means 12 is provided. Is transmitted to the data processing means 13 by wireless communication means.

The pulse measuring device 11 shown in FIG. 3 has a structure in which the body conduction sound detecting means 12 is independent of the data processing means 13 and the display means 14, so that the user can hear arterial sounds or heart sounds such as wrists, necks, and chests. This makes it possible to reduce the size and weight of equipment attached to the measurement site.

The pulse measuring device 11 shown in FIG. 3 can use a computer such as a personal computer and a display such as a liquid crystal as the data processing means 13 and the display means 14.

In addition, the pulse measuring device 11 shown in FIG. 3 can also use a mobile phone terminal having a computer function such as a smartphone as the data processing means 13 and the display means 14. If a smartphone is used as the data processing means 13 and the display means 14, the user's pulse can be constantly measured.

Needless to say, the pulse measuring device used in the present invention can use a body conduction sensor other than the above-described configuration.

4A is a pulse signal obtained by attaching a body conduction sensor to the wrist and detecting the radial artery sound by the body conduction sensor, and FIG. 4B is obtained by performing autocorrelation processing on the pulse signal. Each graph of autocorrelation data is shown.
From the graph shown in FIG. 4, it can be seen that when noise is included in the waveform of the pulse signal obtained by detecting the radial artery sound, the periodic signal can be extracted by performing autocorrelation processing.

FIG. 5 (a) shows a pulse signal obtained by attaching a body conduction sensor to the neck and detecting carotid artery sound by the body conduction sensor, and FIG. 5 (b) is obtained by performing autocorrelation processing on the pulse signal. A graph of the obtained autocorrelation data is shown respectively.
From the graph shown in FIG. 5, it can be seen that the periodic signal can be extracted by performing the autocorrelation process even when the waveform of the pulse signal acquired by detecting the carotid artery sound includes noise.

FIG. 6A shows a pulse signal (heart rate signal) acquired by wearing a body conduction sensor on the chest and detecting a heart sound with the body conduction sensor, and FIG. 5B shows an autocorrelation process on the pulse signal. Graphs of the obtained autocorrelation data are shown respectively.
From the graph shown in FIG. 6, autocorrelation processing is performed even when the waveform of the pulse signal acquired by detecting the heart sound includes a larger noise than the pulse signal acquired by detecting each arterial sound. It can be seen that a periodic signal can be extracted.

  From the results shown in FIG. 4 to FIG. 6, the pulse measuring device of the present invention performs autocorrelation processing on the pulse signal acquired by the body conduction sound sensor, so that even if the waveform of the pulse signal includes noise, Since the periodic signal can be extracted from the autocorrelation data of the signal, the pulse can be measured more accurately.

なお、本発明における自己相関処理自体は周知であり、ここでの詳細な説明は省略する。 The formula for obtaining the autocorrelation function is shown below.

Note that the autocorrelation process itself in the present invention is well known, and a detailed description thereof is omitted here.

<Safety confirmation reporting system using pulse measuring device>
FIG. 7 is a block diagram showing an example of an embodiment of the safety confirmation notification system in the present invention.
The pulse measuring device 101 used in the safety confirmation notification system of the present embodiment is the mode shown in FIG. 3, and the data processing means 103 performs autocorrelation processing on the pulse signal acquired by the body-conducted sound sensor. Based on the pulse rate calculated by the pulse calculation unit 32 in addition to the signal processing unit 31 that generates data, the pulse rate calculation unit 32 that calculates the pulse rate based on the autocorrelation data generated by the signal processing unit 31 A terminal with a GPS function having a safety determination unit 34 for determining the safety of the user is used.

  And the safety information such as the user's pulse rate and abnormality information calculated by the data processing means 103 is communicated by the communication means together with the location information such as the latitude / longitude information of the user by the communication means at regular or emergency times. The administrator 105 is notified.

  In addition, even if it is the pulse measuring device 1 of the aspect shown in FIG. 1, if a GPS function can be mounted, it can be utilized as a pulse measuring device of the safety confirmation notification system of this embodiment.

Since the safety confirmation reporting system of the present embodiment uses a pulse measuring device that can accurately measure the pulse without being affected by the user's body movement, the means for measuring the movement of the user's body as in the past The apparatus configuration for confirming the safety can be simplified.
Further, in the safety confirmation notification system using the pulse measuring device of the present embodiment, the data processing means constituting the pulse measuring device is a terminal with a GPS function, so the safety information of the user is included together with the location information. You can notify the administrator.

FIG. 8 is an image diagram of the safety confirmation notification system shown in FIG.
In the image of FIG. 8, the data processing means 103 in the pulse measuring device 101 is used separately with a smartphone (mobile phone terminal having a computer function) indoors or a smartphone with a GPS function outdoors, or a smartphone with a GPS function is used indoors. Available.

In the pulse measuring device 1 used in the present invention, the data processing means 3 includes the signal processing unit 31 that generates autocorrelation data by performing autocorrelation processing on the pulse signal acquired by the body conduction sound sensor 21. The signal processing unit 31 is not necessarily required to generate autocorrelation data.

  The present invention is not limited to the above embodiments, and it goes without saying that the configuration can be appropriately changed without departing from the scope of the invention.

Since the safety confirmation reporting system of the present invention uses a pulse measuring device that can accurately measure the pulse without being affected by the user's body movement, the means for measuring the movement of the user's body as in the past. the not required, it is possible to simplify the apparatus structure for confirming the safety, since the position information and safety information of the user can be notified to the administrator, extremely high practicality.

DESCRIPTION OF SYMBOLS 1 Pulse measuring device 2 Body conduction sound detection means 3 Data processing means 4 Display means 11 Pulse measuring device 12 Body conduction sound detection means 13 Data processing means 14 Display means 21 Body conduction sound sensor 22 Electret condenser microphone (ECM)
23 Vinyl chloride disc 24 Filler 25 Acrylic cylinder 26 Transmitter 31 Signal processing unit 32 Pulse rate calculation unit 33 Receiver 34 Safety determination unit 101 Pulse measuring device 102 Body conduction sound detection unit 103 Data processing unit 104 Display unit 105 Administrator

Claims (2)

A body conduction sound detecting means for detecting an arterial sound or a heart sound and acquiring a pulse signal;
Data processing means having a pulse rate calculation unit for calculating a pulse rate based on a pulse signal acquired by the body conduction sound detection means;
A safety confirmation notification system using a pulse measuring device comprising:
The body sound detection means is a body sound sensor having a condenser microphone sealed with soft silicon,
The data processing means is a terminal with a GPS function, and further includes a safety determination unit that determines the safety of the user based on the pulse rate calculated by the pulse rate calculation unit,
The data processing unit further includes a signal processing unit that generates autocorrelation data by performing autocorrelation processing on the pulse signal acquired by the body conduction sound detection unit, and the pulse rate calculation unit is generated by the signal processing unit. A safety confirmation notification system for notifying an administrator of the location information and safety information of the user by means of communication means, wherein the pulse rate is calculated based on the autocorrelation data . Claim 1 safety confirmation notification system according to be transmitted to the data processing means via wireless communication means the pulse signals the body sound guide detection means obtains.

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