JP2012110560A - Biological information remote monitoring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remotely monitor biological information on a worker by a simple method and to send instructions to the worker.SOLUTION: This biological information remote monitoring system includes a first earphone microphone 11; a second earphone microphone 23 for making a voice call between itself and the first earphone microphone 11; a signal processing circuit 12 extracting a biological information signal from an electric signal acquired by the first earphone microphone 11 and outputting it; a first modulating-demodulating multiplexing processor 14 modulating the biological information signal from the signal processing circuit 12 and the electric signal acquired by the first earphone microphone 11, into multiplex signals in a voice band and outputting them to a voice communication line 17; and a second modulating-demodulating multiplexing processor 18 demodulating signals inputted from the voice communication line 17 to extract the biological information signal outputted from the signal processing circuit 12 and to display it on a display 19, and outputting the electric signal acquired by the first earphone microphone 11, as a voice signal to the second earphone microphone 23.

Description

  The present invention relates to a configuration of a system for remotely viewing biological information.

  In medical practice, biological information such as blood pressure, heart rate, brain waves, body temperature, and respiration is measured and used for diagnosis. And, as a means for acquiring such biological information, for example, the blood pressure is measured using an upper arm blood pressure meter, or the body temperature is measured under the armpit or the tongue using an electronic thermometer using a mercury thermometer or a thermistor. It is common to do.

  In recent years, in addition to such a conventional measuring apparatus, a method for acquiring biological information from an ear has been proposed. For example, a method of measuring a body temperature and an electrocardiogram waveform from infrared rays radiated from the eardrum and the vicinity thereof with a probe inserted into the ear canal, and displaying the temperature and waveform on a display (for example, see Patent Document 1), A method of irradiating a plurality of lights having different wavelengths to the ear canal, detecting light reflected from the skin of the ear canal, measuring oxygen saturation, pulse rate, respiration rate, etc., and displaying it on a display (for example, see Patent Document 2) ), Or a method of irradiating light from the ear canal to the eardrum, detecting blood pressure, brain waves, etc. based on a signal obtained from the reflected light and displaying the numerical values on a display (for example, Patent Documents) 3). In addition, a method has been proposed in which biological vibrations transmitted through the ear canal as a medium are converted into electrical signals, converted into audible sounds, and output (for example, see Patent Document 4). In recent years, an earphone microphone in which an earphone and a microphone are integrated has been developed (see, for example, Patent Document 5).

JP 2000-217772 A JP 2007-54650 A JP 2007-21106 A JP 2010-22572 A JP 2009-232436 A

  On the other hand, there is an increasing demand for monitoring biological information of workers who perform dangerous work in remote locations and sending appropriate commands to the workers based on the monitoring. However, since the conventional biometric information detection devices described in Patent Documents 1 to 4 require a separate large transmitter to transmit biometric information, it is obstructive to work when worn by workers. There was a problem of becoming. Even when a transmitter is attached, there is a problem that a further communication device is required to give an instruction to the worker to evacuate based on the transmitted biological information, and the device becomes larger. It was.

  Therefore, an object of the present invention is to perform remote monitoring of a worker's biological information by a simple method and to send a command to the worker.

  The biological information remote monitoring system according to the present invention converts the ear canal pressure into an electrical signal, converts a voice signal into a voice, and converts between the voice and the voice signal. A second earphone microphone that performs voice communication with the earphone microphone; a signal processing circuit that extracts and outputs a biological information signal from the electrical signal acquired by the first earphone microphone; and the first earphone microphone And the biological information signal output from the signal processing circuit are input, and the input electrical signal and the biological information signal are modulated into a multiplexed signal in a voice band to be used as a voice communication line. A first modulation / demodulation multiplex processor that outputs a demodulated signal in a voice band input from the voice communication line and outputs the demodulated signal as a voice signal to a first earphone microphone; A voice signal multiplexed signal input from the line is demodulated, a biological information signal output from the signal processing circuit and an electrical signal acquired by the first earphone microphone are extracted, and the extracted biological information signal is displayed. And outputting the extracted electrical signal as an audio signal to the second earphone microphone, and modulating the audio signal acquired by the second earphone microphone into a multiplexed signal in an audio band to output the audio communication line And a second modulation / demodulation multiplexing processor for outputting to the receiver.

  In the biological information remote monitoring system according to the present invention, the signal processing circuit processes the electrical signal input from the first earphone microphone to extract continuous biological information data, and continuously biometric information data. To extract the biological numerical information and output the continuous biological information data and the biological numerical information to the first modulation / demodulation multiplexing processor, the first modulation / demodulation multiplexing processor The biometric value information output from the signal processing circuit is compared with a threshold value within a predetermined range. If the biometric value information is within the predetermined threshold value range, the biometric value information is modulated into a multiplexed signal in a voice band. Output to the voice communication line, and if the biological numerical information exceeds a predetermined threshold range, the continuous biological information data is modulated into a voice band multiplexed signal and output to the voice communication line. Even as It is suitable.

  In the biological information remote monitoring system of the present invention, a part of the first earphone microphone including a plurality of the first earphone microphones and performing a voice call with the second earphone microphone among the plurality of first earphone microphones. It is also suitable as a selection device that selects an earphone microphone.

  In the biological information remote monitoring system of the present invention, the biological information remote monitoring system includes an input device that is connected to the selection device and inputs a command to the first modulation / demodulation multiplexer, and the command signal input from the input device is the second signal. The first modulation / demodulation multiplexer and the first modulation / demodulation multiplex processor output the first modulation / demodulation multiplex processor to the first modulation / demodulation multiplex processor through the voice communication line. When the command signal is input, the modulation / demodulation multiplexing processor modulates the continuous biological information data into a voice band multiplexed signal regardless of the biological numerical information and outputs the modulated signal to the voice communication line. A biological information remote monitoring system characterized by that.

  The biological information remote monitoring system of the present invention includes a biological information sensor that converts biological information into an electrical signal, and the signal processing circuit processes the electrical signal input from the biological information sensor to obtain continuous biological information. Extracting data, processing continuous biological information data to extract biological numerical information, and outputting the continuous biological information data and biological numerical information to the first modulation / demodulation multiplexing processor, The first modulation / demodulation multiplexing processor compares the biological numerical information output from the signal processing circuit with a threshold within a predetermined range, and when the biological numerical information is within a predetermined threshold, the biological numerical information Is modulated into a voice band multiplexed signal and output to a voice communication line. When the biological numerical information exceeds a predetermined threshold range, the continuous biological information data is modulated into a voice band multiplexed signal. Shi Outputting the voice communication line, is also suitable as.

  In the biological information remote monitoring system of the present invention, the first modulation / demodulation multiplexing further includes an environmental sensor that acquires environmental information around the living body as an electrical signal, and an acceleration sensor that detects acceleration when the living body moves. The processor further modulates an electrical signal from the environment sensor and the acceleration sensor into a voice band multiplexed signal and outputs the signal to a voice communication line, and the second modulation / demodulation multiplexer further includes a voice band. It is also preferable that the multiplexed signal is demodulated to extract the electrical signal acquired from the environment sensor and the acceleration sensor and output to the display device.

  The present invention has an effect that it is possible to remotely monitor the biological information of the worker by a simple method and to send a command to the worker.

It is a systematic diagram which shows the structure of the biometric information remote monitoring system in embodiment of this invention. It is explanatory drawing which shows the state which attached the mounting | wearing unit used for the biological information monitoring system in embodiment of this invention to the ear | edge. It is a systematic diagram which shows the structure of the biometric information remote monitoring system in other embodiment of this invention. It is explanatory drawing which shows the state which attached the mounting unit used for the biological information monitoring system in other embodiment of this invention to the ear | edge.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the biological information remote monitoring system 100 according to the present invention has a function as a microphone that converts an external auditory canal pressure into an electrical signal and converts a sound into a sound signal (a sound converted into an electrical signal). A first earphone microphone 11 that has a function as an earphone or a speaker that converts an audio signal into sound, and a signal processing circuit 12 that extracts and outputs a biological information signal from the electrical signal acquired by the first earphone microphone 11. The first modulation / demultiplexing processor 14 to which the electrical signal acquired by the first earphone microphone 11 and the biological information signal output from the signal processing circuit 12 are input, and the first modulation / demodulation multiplexing processor 14. And a second modulation / demultiplexing processor 18 connected via a wireless voice communication line 17, and a display for displaying a biometric information signal extracted by the second modulation / demultiplexing processor 18 A display 19 is a location, and a keyboard 24 is an input device and a microphone 21 and a speaker 22 connected via a selection device 20 and the second modulation and demodulation multiplexing processor 18. The microphone 21 and the speaker 22 constitute a second earphone microphone 23 described in claims. The first and second modulation / demodulation multiplexers 14 and 18 may be computers including a CPU and a DSP that perform information processing and a memory that stores programs, drive data, and the like. The signal processing circuit 12 may be an electronic circuit driven by a first modulation / demultiplexing processor 14 that is a computer. The mounting unit 16 is supplied with driving power from a built-in power source or an external power source (not shown).

  As shown in FIG. 2, the first earphone microphone 11, the signal processing circuit 12, and the first modulation / demodulation multiplexing processor 14 are incorporated in a mounting unit 16 that is mounted on a worker's ear 30. ing. The mounting unit 16 includes an external auditory canal insertion portion 16a that is inserted into the external auditory canal 31, and a main body 16b that has a shape that matches the shape from the external auditory canal 31 to the ear shell.

  As shown in FIG. 2, the ear canal insertion portion 16 a of the mounting unit 16 is a cylinder having a diameter substantially the same as the size of the ear hole, and a through hole 25 is provided therein. The outer shape is not limited to the cylindrical shape, and may be curved along the shape of the ear hole. The main body 16b continuously connected to the ear canal insertion portion 16a has an outer shape that matches the shape from the ear canal 31 to the ear shell. A cavity 26 connected to the through hole 25 is provided inside the main body 16b. The cavity 26 has a larger inner diameter than the through hole 25. The cavity 26 is attached with an oscillating electrical converter 27 that converts the ear canal pressure into an electrical signal. For example, the oscillating electric converter 27 can convert vibration of the diaphragm into an electric signal by a magnet, and can drive the magnet by the input electric signal to vibrate the diaphragm and output it as sound. May be. Further, the vibration of the diaphragm may be converted into an electric signal by the piezoelectric element, and the piezoelectric element may be driven by the input electric signal to vibrate the diaphragm and output as sound. . In the present embodiment, the oscillating electrical converter 27 is configured to close the through hole 25 of the ear canal insertion portion 16a through the cavity 26, but may be attached to close the through hole 25 directly. The ear canal insertion portion 16a and the main body 16b are made of resin or the like. The through-hole 25, the cavity 26, and the oscillating electric converter 27 constitute the first earphone microphone 11 shown in FIG.

  The external ear canal insertion portion 16 a of the mounting unit 16 fits snugly into the external ear canal 31 and suppresses external sound from entering the external ear canal 31. Further, the main body 16b of the mounting unit 16 fits the ear shell of the worker's ear 30 to stabilize the position of the mounting unit 16. The oscillating electrical transducer 27 that closes the through hole 25 of the ear canal insertion portion 16 a through the cavity 26 closes the ear canal 31 together with the ear canal insertion portion 16 a that is closely fitted in the ear canal 31, and between the eardrum 32. A closed space 37 is formed.

  As shown in FIG. 2, the tympanic membrane 32 is a membrane that exists at the boundary between the inner ear 33 and the outer ear including the outer ear canal 31, and biological sounds such as heartbeat sounds, breathing sounds, and lung sounds are emitted from the inner ear canal 35 that leads to the inner ear 33. It is transmitted to the eardrum as pressure vibration. The body sound transmitted from the inner ear 33 to the eardrum 32 vibrates the eardrum 32. The vibration of the eardrum 32 is transmitted as a change in the pressure of the ear canal 31 from the cavity 26 through the through hole 25 of the ear canal insertion part 16 a to the oscillating electrical converter 27 that forms the closed space 37, and is transmitted by the first earphone microphone 11. It is converted into an electrical signal. In this way, the oscillating electrical converter 27 detects pressure fluctuations transmitted to the ear canal 31, converts it into an electrical signal, and outputs it.

  The first earphone microphone 11 including the through hole 25, the cavity 26, and the oscillating electrical converter 27 is connected to a small signal processing circuit 12. The signal processing circuit 12 removes noise and the like from the electrical signal converted by the first earphone microphone 11, and uses a filter or the like from the signal to biometric information biological signal such as heartbeat and respiration existing in a specific frequency region. To extract. This biological information signal is continuous. Then, the signal processing circuit processes the extracted continuous biological information data, and extracts biological numerical information such as a heart rate or a respiratory rate from the processed data. Further, the signal processing circuit processes the biological information data acquired from the first earphone microphone, and performs first modulation / demodulation multiplexing of a biological information signal for transmission such as a heartbeat waveform that is continuous biological information data, for example. Output to the processor 14. The first earphone microphone 11 is directly connected to the first modulation / demultiplexing processor 14 and outputs the electrical signal obtained by converting the pressure fluctuation of the ear canal 31 to the first modulation / demultiplexing processor 14 as it is.

  As shown in FIG. 1, the second modulation / demultiplexing processor 18, the display 19, the selection device 20, the microphone 21, the speaker 22, and the keyboard 24 are remote from the worker wearing the mounting unit 16. It is provided at the base 50 of the ground. The first modulation / demultiplexing processor 14 and the second modulation / demultiplexing processor 18 of the mounting unit 16 worn by a remote worker are connected by a wireless voice communication line 17. The voice communication line 17 may be, for example, a mobile phone call line or a wireless line for performing other voice communications, and performs communications in a frequency band of, for example, about 100 Hz to 3.6 kHz. Anything that can do. In addition, the first modulation / demodulation multiplexing processor 14 performs voice communication with the mobile phone possessed by the worker wearing the mounting unit 16, and is installed in the mobile phone and the base 50. Communication with the second modulation / demodulation multiplexing processor 18 may be performed using a telephone line of a mobile phone.

  The operation of the biological information remote monitoring system 100 configured as described above will be described. In the following description, a case where a heart rate and a heart rate waveform are acquired by the first earphone microphone 11 will be described.

  As described above, the air in the ear canal 31 is vibrated by the heartbeat transmitted to the ear canal 31 of the worker wearing the wearing unit 16, and the air vibration is also converted into an electrical signal by the first earphone microphone 11. The electric signal is input to the signal processing circuit 12. The signal processing circuit 12 obtains a peak frequency by performing, for example, an FFT (Fast Fourier Transform) on the electric signal, calculates a heart rate as biometric information from this, and wears the wearing unit 16 that has been acquired in advance. Outputs the heartbeat waveform of the worker according to the calculated heart rate. The heartbeat waveform is continuous biological information data.

  The heart rate and heartbeat waveform biological signals output from the signal processing circuit 12 are input to the first modulation / demodulation multiplexing processor 14. The first modulation / demodulation multiplexing processor 14 digitizes and multiplexes the heart rate and heartbeat waveform biological signals as a bit stream. Then, the first modulation / demodulation multiplexing processor 14 modulates the multiplexed bit stream data into analog data in a voice band of about 100 Hz to 3.6 kHz and leaves the operator via the wireless voice communication line 17. To the second modulation / demodulation multiplexing processor 18 provided in the base 50. The second modulation / demultiplexing processor 18 that has received the analog data demodulates the analog data, extracts the heart rate and the heartbeat waveform biosignals output from the signal processing circuit 12 and outputs them to the display 19. As a result, the heart rate and heart rate waveform of the worker at the remote place are displayed on the display 19.

  As shown in FIG. 1, the second modulation / demodulation multiplexer 18 of the biological information remote monitoring system 100 of this embodiment simultaneously receives heart rate and heart rate waveform data modulated into analog data from a plurality of mounting units 16. The images can be displayed side by side on the display 19. The supervisor of the base 50 monitors the heart rate and heart rate waveform of each worker displayed on the display 19. If there is a worker whose heart rate or heart rate waveform is abnormal, the selection unit 20 selects the worker's wearing unit 16 and makes a voice call with the microphone 21. The supervisor's voice is transmitted from the second modulation / demodulation multiplexing processor 18 to the first modulation / demodulation multiplexing processor 14 of the mounting unit 16 mounted by a worker at a remote location via the voice communication line 17. The The first modulation / demultiplexing processor 14 outputs the transmitted audio signal to the first earphone microphone 11. Then, the sound output from the first earphone microphone 11 vibrates the eardrum 32, and the worker recognizes the sound of the supervisor of the base 50.

  When the worker speaks to respond to the voice of the supervisor of the base 50, the pressure of the air in the ear canal 31 is changed by the voice, and the pressure fluctuation is detected by the first earphone microphone 11. And converted into an electrical signal. The electrical signal is directly input to the first modulation / demodulation multiplexer 14 without passing through the signal processing circuit 12, and digitized together with the heart rate and heartbeat waveform biological signals input from the signal processing circuit 12 to form a bit stream. Is multiplexed. Then, the multiplexed bit stream data is modulated into analog data in the voice band and is provided in the second modulation / demodulation multiplexing processor provided in the base 50 away from the worker via the wireless voice communication line 17. 18 is transmitted. The second modulation / demultiplexing processor 18 that has received the analog data demodulates the analog data, the heart rate output from the signal processing circuit 12, the biological signal of the heartbeat waveform, and the electrical signal detected by the first earphone microphone 11. , And the heart rate and the heart rate waveform are output to the display 19 and are detected by the first earphone microphone 11 and output from the speaker 22 as an audio signal. As a result, the supervisor at the base 50 can make a voice call with the worker while watching the heart rate and heart rate waveform of the worker at a remote location.

  If there is no abnormality in the response of the worker, the supervisor continues the work as it is, and if an abnormality is felt in the response of the worker, the supervisor gives a command such as an evacuation instruction by voice using the microphone 21.

  As described above, the supervisor at the base 50 can make a voice call with the worker while monitoring the heart rate and heart rate waveform of the worker at a remote place. Further, in the biological information remote monitoring system 100 of the present embodiment, the first and second modulation / demodulation multiplexers 14 and 18 multiplex the heart rate, heart rate waveform, and audio signal, and then the audio band from 100 Hz to 3 Because it modulates to analog data in the voice band of about 6 kHz and transmits / receives it using an existing voice communication line such as a mobile phone line, and demodulates the received analog data to extract the heart rate, heart rate waveform, and voice signal. Workers can be remotely monitored in any area where calls can be made using a mobile phone, and workers in a wide area can be monitored.

  In the embodiment described above, when a biological signal is constantly transmitted from the mounting unit 16 to the base 50, the power consumption of the mounting unit 16 increases and the driving time is shortened. Therefore, the first modulation / demultiplexing processor 14 incorporated in the wearing unit 16 compares the heart rate, which is the biological numerical information input from the signal processing circuit 12, with the reference heart rate stored in advance in the memory, When the difference between the heart rate and the reference heart rate is within a predetermined threshold range, for example, when the heart rate is between a predetermined upper limit value and a lower limit value, it is determined that the heart rate is normal. , Output only heart rate. When the difference between the heart rate and the reference heart rate exceeds a predetermined threshold range, for example, when the heart rate exceeds a predetermined upper limit value or less than a predetermined lower limit value, the heart rate is abnormal. It may be determined that the heart rate and the heart rate waveform are transmitted so that the biometric information can be monitored for a long time while suppressing the consumption of the driving power. In the present embodiment, the heartbeat waveform data processed by the signal processing circuit 12 has been described as being multiplexed by the first modulation / demodulation multiplexing processor 14. However, the electrical signal detected by the first earphone microphone 11 is described. May be multiplexed and transmitted as is and displayed on the display 19, or the electric signal demodulated by the second modulation / demodulation multiplexer 18 may be processed by another signal processing circuit provided in the base 50. A heartbeat waveform similar to that described above may be output to the display 19.

  Further, in the embodiment described above, the supervisor inputs, for example, the name or number of the monitored worker from the keyboard 24 when an abnormality is felt in the response of the worker. The input command is multiplexed as a bit stream together with the audio signal by the second modulation / demultiplexing processor 18, and transmitted to the first modulation / demultiplexing processor 14 via the audio communication line 17. The first modulation / demultiplexing processor 14 demodulates the received signal and extracts the command inputted by the monitor from the inside, and if the command is, for example, the name of the worker, Regardless of the heart rate input from the processing circuit 12, the heart rate and the heart rate waveform are transmitted. As a result, the supervisor can acquire and monitor a more detailed biological signal of a worker who feels an abnormality in the response, and does not constantly transmit a large number of heartbeat waveforms. Can be long. If it is determined that there is no abnormality in the worker, transmission of the heart rate and heart rate waveform is intermittently transmitted at predetermined time intervals. If it is determined that the worker is abnormal, Alternatively, continuous transmission may be performed by inputting a command from the keyboard 24.

  Another embodiment of the present invention will be described with reference to FIGS. The same parts as those in FIGS. 1 and 2 are denoted by the same reference numerals, and the description thereof is omitted. As shown in FIG. 3, in this embodiment, in addition to the first earphone microphone 11 that converts the pressure of the ear canal into an electrical signal, biological information such as body temperature and blood oxygen concentration is acquired inside the wearing unit 16. The living body information sensor 13 is incorporated.

  When the biological information sensor 13 for acquiring biological information such as body temperature and blood oxygen concentration is incorporated in the mounting unit 16, the biological information is monitored by the supervisor of the base 50 together with the heart rate and heart rate waveform. The monitor of the base 50 can remotely monitor the state of the worker in more detail, and can give appropriate instructions and commands by voice.

  Furthermore, the mounting unit 16 incorporates an environmental sensor that detects the outside air temperature and the atmospheric pressure around the worker wearing the mounting unit 16 and an acceleration sensor that detects acceleration when the worker moves. In this case, after the data of these sensors are multiplexed as in the case of biological information, the data is modulated into analog data in a voice band from about 100 Hz to 3.6 kHz, and an existing voice communication line such as a cellular phone line is used. It is possible to extract the body temperature, the blood oxygen concentration, the outside air temperature, the outside air pressure, the acceleration, etc. together with the heart rate, heart rate waveform, voice signal by demodulating the received analog data. The operator's condition can be remotely monitored in detail, and appropriate instructions and commands can be given by voice.

  DESCRIPTION OF SYMBOLS 11 1st earphone microphone, 12 Signal processing circuit, 13 Biometric information sensor, 14 1st modulation / demodulation multiplexing processor, 16 Wearing unit, 16a External ear canal insertion part, 16b Main body, 17 Voice communication line, 18 2nd modulation / demodulation multiplexing Processor, 19 display, 20 selection device, 21 microphone, 22 speaker, 23 second earphone microphone, 25 through-hole, 26 cavity, 27 oscillating electrical transducer, 31 ear canal, 32 eardrum, 33 inner ear, 35 inner ear canal, 37 Closed space, 50 bases, 100 Biological information remote monitoring system.

Claims (6)

A first earphone microphone that converts the ear canal pressure into an electrical signal and converts the audio signal into audio;
A second earphone microphone that converts between voice and a voice signal and makes a voice call with the first earphone microphone;
A signal processing circuit that extracts and outputs a biological information signal from the electrical signal acquired by the first earphone microphone;
The electrical signal acquired by the first earphone microphone and the biological information signal output from the signal processing circuit are input, and the input electrical signal and the biological information signal are modulated into a multiplexed signal in a voice band. A first modulation / demodulation multiplexer that demodulates a multiplexed signal in a voice band input from the voice communication line and outputs the signal to the first earphone microphone as a voice signal;
The extracted biological information is obtained by demodulating the multiplexed signal of the voice band input from the voice communication line, extracting the biological information signal output from the signal processing circuit and the electrical signal acquired by the first earphone microphone. The signal is output to a display device, and the extracted electrical signal is output as an audio signal to the second earphone microphone, and the audio signal acquired by the second earphone microphone is modulated into an audio band multiplexed signal to A second modulation / demodulation multiplexer for outputting to the voice communication line;
A biological information remote monitoring system comprising: The biological information remote monitoring system according to claim 1,
The signal processing circuit processes the electrical signal input from the first earphone microphone to extract continuous biological information data, and processes the continuous biological information data to extract biological numerical information. And outputting the continuous biological information data and the biological numerical information to the first modulation / demodulation multiplexing processor,
The first modulation / demodulation multiplexing processor compares the biological numerical information output from the signal processing circuit with a threshold within a predetermined range,
If the biological numerical information is within a predetermined threshold range, the biological numerical information is modulated into a voice band multiplexed signal and output to a voice communication line;
If the biological numerical information exceeds a predetermined threshold range, the continuous biological information data is modulated into a multiplexed signal in a voice band and output to a voice communication line;
Biological information remote monitoring system characterized by The biological information remote monitoring system according to claim 1 or 2,
A plurality of the first earphone microphones;
A selection device for selecting a part of the first earphone microphones for voice communication with the second earphone microphones from the plurality of first earphone microphones;
A biological information remote monitoring system comprising: The biological information remote monitoring system according to claim 3,
An input device connected to the selection device for inputting a command to the first modulation / demodulation multiplexer;
The command signal input from the input device is modulated into a voice band multiplexed signal together with the voice signal acquired by the second earphone microphone, and is sent from the second modulation / demodulation multiplexing processor through the voice communication line to the first signal. Is output to the modulation / demodulation multiplexer.
When the command signal is input, the first modulation / demodulation multiplexing processor modulates the continuous biological information data into a multiplexed signal in a voice band regardless of the biological numerical information, and transmits a voice communication line. Output to
Biological information remote monitoring system characterized by The biological information remote monitoring system according to claim 1,
Including a biological information sensor that converts biological information into an electrical signal;
The signal processing circuit processes the electrical signal input from the biological information sensor to extract continuous biological information data, and also processes the continuous biological information data to extract biological numerical information. Outputting the biological information data and the biological numerical information to the first modem unit,
The first modulation / demodulation multiplexing processor compares the biological numerical information output from the signal processing circuit with a threshold within a predetermined range,
If the biological numerical information is within a predetermined threshold range, the biological numerical information is modulated into a voice band multiplexed signal and output to a voice communication line;
If the biological numerical information exceeds a predetermined threshold range, the continuous biological information data is modulated into a multiplexed signal in a voice band and output to a voice communication line;
Biological information remote monitoring system characterized by The biological information remote monitoring system according to any one of claims 1 to 5,
An environmental sensor that acquires environmental information around the living body as an electrical signal;
An acceleration sensor that detects acceleration when the living body moves;
Further comprising
The first modulation / demodulation multiplexing processor further modulates an electrical signal from the environmental sensor and the acceleration sensor into a multiplexed signal in a voice band and outputs the multiplexed signal to a voice communication line,
The second modulation / demultiplexing processor further demodulates a multiplexed signal in a voice band, extracts an electrical signal acquired from the environmental sensor and the acceleration sensor, and outputs the electrical signal to the display device;
Biological information remote monitoring system characterized by

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