JP2013116216A - Biological information detecting device and temperature adjusting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a biological information detecting device capable of detecting a breathing frequency, a heart frequency, a skin temperature or others without installing it in a person to be detected, without using a microwave doppler module at low cost.SOLUTION: The biological information detecting device 10 has a receiving antenna 4 receiving thermal noise of a millimeter-wave zone radiated from the person 2 to be detected, a receiving amplifying section 12 amplifying received signals, a detecting section 14 detecting the received signals, and a detecting amplifying section 16 amplifying the detected signals. The detected signals after the amplification is subjected to Fourier transformation in an FFT section 20 to be separated into a plurality of spectra on a frequency axis, and each of the separated spectra is input into a skin temperature detecting section 22, a breathing frequency detecting section 24, and a heart frequency detecting section 26. Further, in each of the sections, the skin temperature is detected from the amplitude of the spectra corresponding to the DC components of the detected signals, the frequency of the spectrum with the largest amplitude in the spectra in the frequency zone corresponding to the breathing frequency and the heart frequency is detected as the breathing frequency and the heart frequency.

Description

  The present invention relates to a biological information detection device that detects biological information such as a skin temperature, a respiratory rate, and a heart rate of a person to be detected, and a temperature adjustment device that performs ambient temperature adjustment using the biological information detection device.

2. Description of the Related Art As a biological information detection device that detects a respiration rate and a heart rate of a detection target person, a device including a microwave Doppler module is known (for example, see Patent Document 1).
This biological information detection apparatus uses a microwave Doppler module to irradiate the chest and back of a detection target person with microwaves, receives reflected waves of the irradiated microwaves, and transmits the frequency of the transmitted wave and the received wave. By detecting this difference, the movement of the person to be detected (specifically, a minute displacement of the surface of the living body due to respiration or heartbeat) is measured.

  Therefore, according to this biological information detection apparatus, the biological information (respiration rate / heart rate) of the detection target person can be obtained without wearing a measuring device (sensor) for measuring the respiratory rate or heart rate. It can detect and can reduce a burden of a detection subject.

JP 2010-162069 A

  However, the microwave Doppler module constituting the conventional biological information detection apparatus includes a microwave generation source for generating a microwave, a transmitter and a receiver for transmitting and receiving the microwave, and signal processing of the transmission wave and the reception wave. Thus, there are many components such as a signal processing circuit for generating a detection signal corresponding to the movement of the living body surface, and there is a problem that the configuration is complicated and expensive.

In addition, in the above-described conventional biological information detection device, although it is possible to detect respiration and pulse from the movement of the biological surface, it is not possible to detect the skin temperature that is the temperature of the biological surface.
For this reason, for example, when the detection target person's condition is grasped from the detection target person's skin temperature, respiratory rate, heart rate, etc., and the surrounding environment such as temperature is controlled, a separate skin temperature detector is used. It is necessary to provide it.

  In this case, in order to be able to detect the skin temperature of the person to be detected in a non-contact manner as in the above-described biological information detection device, an infrared sensor made of thermography, thermopile, or the like is required, and the cost of the entire control system There was a problem of inviting up.

  The present invention has been made in view of these problems, and can detect the respiration rate, heart rate, skin temperature, etc. of the detection target person without attaching various sensors to the detection target. An object of the present invention is to provide a biological information detection device and a temperature adjustment device that can be realized at a lower cost compared to the case of using.

The biological information detection apparatus according to claim 1, which has been made to achieve such an object,
Receiving means for receiving the thermal noise of the microwave band radiated from the detection subject;
A detection means for amplifying and detecting a reception signal from the reception means;
Fourier transform means for extracting a spectrum on the frequency axis of the received signal detected by the detection means;
A skin that extracts a spectrum corresponding to a direct current component from the spectrum on the frequency axis extracted by the Fourier transform means, and outputs the amplitude of the extracted spectrum as a detection signal representing the skin temperature of the detection target person Temperature detection means;
From the spectrum on the frequency axis extracted by the Fourier transform means, the spectrum having the maximum amplitude in the frequency band corresponding to the human respiratory rate or heart rate is extracted, and the frequency of the spectrum is detected. Breathing / heartbeat detecting means for outputting a detection signal representing a person's respiratory rate or heart rate;
It is provided with.

Moreover, the temperature adjusting device according to claim 2 is:
Receiving means for receiving the thermal noise of the microwave band radiated from the detection subject;
A detection means for amplifying and detecting a reception signal from the reception means;
Fourier transform means for extracting a spectrum on the frequency axis of the received signal detected by the detection means;
A skin that extracts a spectrum corresponding to a direct current component from the spectrum on the frequency axis extracted by the Fourier transform means, and outputs the amplitude of the extracted spectrum as a detection signal representing the skin temperature of the detection target person Temperature detection means;
From the spectrum on the frequency axis extracted by the Fourier transform means, the spectrum having the maximum amplitude in the frequency band corresponding to the human respiratory rate or heart rate is extracted, and the frequency of the spectrum is detected. Breathing / heartbeat detecting means for outputting a detection signal representing a person's respiratory rate or heart rate;
Heating / cooling means for increasing or decreasing the temperature in the reception direction of the thermal noise by the receiving means;
A determination unit that determines whether or not there is a person to be detected in front of the reception direction of the thermal noise by the reception unit based on a detection signal from the respiration / heart rate detection unit;
When it is determined by the determination means that there is a person to be detected in front of the reception direction, the heating / cooling means is driven based on a detection signal from the skin temperature detection means, so Control means for raising or lowering and stopping the driving of the heating / cooling means when it is judged by the judging means that there is no person to be detected ahead of the receiving direction;
It is provided with.

  According to the biological information detecting apparatus of the present invention, the receiving means receives the thermal noise of the microwave band radiated from the detection subject, the detecting means amplifies the received signal and detects it, and the Fourier transform means Then, the spectrum on the frequency axis of the received signal detected by the detection means is extracted.

  Then, the skin temperature detection means extracts the spectrum of the extremely low frequency region corresponding to the DC component from the spectrum on the frequency axis extracted by the Fourier transform means, and the amplitude of the extracted spectrum is detected. It outputs as a detection signal showing the person's skin temperature.

  Further, the breathing / heartbeat detecting means extracts a spectrum having the maximum amplitude in the frequency band corresponding to the respiratory rate or heart rate of the human body from the spectrum on the frequency axis extracted by the Fourier transform means, At least one of the amplitude and frequency of the spectrum is output as a detection signal representing the respiration rate or heart rate of the detection subject.

  In other words, not only infrared rays but also thermal noise in the microwave band is radiated from the human body of the detection subject, and the radiation level of the thermal noise corresponds to the skin temperature of the detection subject (that is, the skin temperature). To do.

Therefore, in the present invention, the skin temperature detection means detects the DC component that is the average level of the detection signal (the amplitude of the received signal) obtained through the detection means as the skin temperature of the detection target person.
Further, the signal level of the received signal obtained through the detection means varies according to the movement of the human body accompanying the respiration and heartbeat of the detection target person (specifically, the movement of the surface of the human body). It changes according to the heart rate.

  Therefore, in the present invention, the respiration / heart rate detection means has the maximum amplitude in the frequency band corresponding to the respiration rate or heart rate of the human body from the spectrum on the frequency axis extracted by the Fourier transform means. A spectrum is extracted, and the frequency of the spectrum is output as a detection signal representing the respiration rate or heart rate of the person to be detected.

  Therefore, according to the living body information detecting apparatus of the present invention, the respiration rate of the detection target person or the transmitter can be reduced without providing a microwave generation source or transmitter as in the conventional living body information detecting apparatus using the microwave Doppler module. Heart rate can be detected.

  For this reason, according to the present invention, the configuration of the biological information detection device capable of detecting the respiration rate and heart rate of the person to be detected in a non-contact manner can be simplified as compared with the conventional device, and the manufacturing cost can be reduced. Can be reduced.

  In addition, according to the biological information detection apparatus of the present invention, the received signal from the receiving means is detected and the spectrum on the frequency axis included in the received signal is analyzed to detect the respiratory rate or heart rate of the detection target person. In addition, since the DC component of the detection signal obtained by detecting the reception signal from the receiving means is detected as the skin temperature of the detection subject, it can also be used as a skin temperature detection device. For this reason, according to this invention, the use of a biological information detection apparatus can be expanded.

  Next, according to the temperature adjusting device of the present invention, the receiving device, the detecting device, the Fourier transforming device, the skin temperature detecting device, and the respiration / heartbeat detecting device are provided as in the biological information detecting device of claim 1. For this reason, according to the temperature adjusting device of the present invention, it is possible to detect the skin temperature of the detection target person, the respiratory rate, or the heart rate without contact with the detection target person.

  Moreover, in the temperature control apparatus of this invention, a determination means determines whether a detection target person exists ahead of the receiving direction of the thermal noise by a receiving means based on the detection signal from a respiration / heart rate detection means. This is because when the respiration / heart rate detection means does not detect the respiration rate or heart rate, it is considered that there is no person to be detected ahead of the reception direction of the thermal noise by the reception means.

  When the determination means determines that there is a person to be detected ahead in the reception direction, the control means drives the heating / cooling means based on the detection signal from the skin temperature detection means, thereby Increase or decrease. In addition, when the determination unit determines that there is no person to be detected ahead in the reception direction, the control unit stops driving the heating / cooling unit.

  Thus, according to the temperature adjustment device of the present invention, the presence / absence of the detection target person is determined based on the detection signal from the respiration / heart rate detection means, and only when the detection target person is present, the heating / cooling means is Driving is performed according to the skin temperature of the detection target person detected by the skin temperature detection means, and the temperature around the detection target person is increased or decreased.

  Therefore, according to the temperature control apparatus of the present invention, the heating / cooling means can be driven only when there is a detection target person to be heated / cooled, and the driving efficiency of the heating / cooling means is improved. Energy saving.

It is a block diagram showing the structure of the whole biometric information detection apparatus of embodiment. It is explanatory drawing showing the relationship between the Fourier-transform result of a received signal, skin temperature, a respiration rate, and a heart rate. It is a block diagram showing the structure of the whole monitoring and control system which monitors the state of a detection subject (human body) using a biological information detection apparatus, and adjusts indoor temperature. It is a flowchart showing the monitoring and alarm process performed with the monitoring apparatus of FIG. It is a flowchart showing the air-conditioning control process performed with the control apparatus of FIG.

Embodiments of the present invention will be described below with reference to the drawings.
[Biological information detection device]
As shown in FIG. 1, the biological information detection apparatus according to the present embodiment generates thermal noise in a microwave band (more specifically, a millimeter wave band having a short wavelength among microwaves) radiated from the human body of the detection target person 2. The receiving antenna 4 for receiving is provided, and the received signal from the receiving antenna 4 is signal-processed to detect the skin temperature, the respiratory rate, and the heart rate of the person 2 to be detected.

  That is, the living body information detection apparatus of the present embodiment detects a reception amplification unit 12 that amplifies a millimeter-wave band reception signal received by the reception antenna 4 and a reception signal amplified by the reception amplification unit 12. A detection unit 14 and a detection amplification unit 16 that amplifies the detection signal detected by the detection unit 14 are provided.

The detection signal amplified by the detection amplification unit 16 is A / D converted at a predetermined sampling period by the A / D conversion unit 18 and is subjected to discrete Fourier transform (FFT) by the FFT unit 20.
Note that the sampling period of the detection signal by the A / D converter 18 is a frequency of about 200 Hz at maximum corresponding to the human heart rate from at least the sampled detection signal in the discrete Fourier transform (FFT) in the FFT unit 20. It is set to a cycle in which components can be extracted (or a cycle shorter than this cycle).

  Further, the FFT unit 20 performs discrete Fourier transform (FFT) on the A / D-converted detection signal, so that a human heart rate, a respiratory rate having a longer cycle than the heart rate, and This is for extracting a number of spectra on the frequency axis of the detection signal, including a spectrum corresponding to the DC component (specifically, skin temperature) of the detection signal.

Next, the spectrum on the frequency axis of the detection signal extracted by the FFT unit 20 is input to the skin temperature detection unit 22, the respiration rate detection unit 24, and the heart rate detection unit 26, respectively.
Each of these detection units 22, 24, and 26 is configured as a digital filter constituting a low-pass filter or a band-pass filter, and corresponds to the DC component of the detection signal from the spectrum extracted by the FFT unit 20. The spectrum within the frequency band corresponding to the respiration rate of about 10 to 20 times per minute, corresponding to the heart rate of about 50 to 80 times per second, and at most about 200 times due to exercise etc. A spectrum in the frequency band is selectively extracted.

Then, the skin temperature detection unit 22 outputs the signal level (that is, amplitude) of the spectrum corresponding to the DC component of the detection signal as a skin temperature detection signal.
The respiration rate detection unit 24 selects a spectrum having the highest signal level (amplitude) from the spectrum in the frequency band corresponding to the respiration rate extracted as described above, and selects the frequency of the selected spectrum. And output as a respiratory rate detection signal.

  The heart rate detection unit 26 selects the spectrum having the highest signal level (amplitude) from the spectrum in the frequency band corresponding to the heart rate extracted as described above, and selects the frequency of the selected spectrum. And output as a heart rate detection signal.

That is, thermal noise in the microwave band including millimeter waves is radiated from the human body of the detection target person 2, and the radiation level of the thermal noise corresponds to the skin temperature of the detection target person 2.
Therefore, in the present embodiment, millimeter wave band thermal noise radiated from the detection subject 2 is received by the receiving antenna 4, and the received signal is received by the reception amplification unit 12, the detection unit 14, and the detection amplification unit 16. The skin temperature is detected by detecting and amplifying and detecting the signal level of the DC component of the detected signal by the FFT unit 20 and the skin temperature detecting unit 22.

Further, the signal level of the detection signal varies in accordance with the movement of the surface of the human body associated with the respiration and heartbeat of the detection target person 2, and the variation frequency varies in accordance with the respiration rate and the heart rate.
Therefore, in the present embodiment, the fluctuation component of the detection signal that changes with the respiration and heartbeat of the detection target person 2 is extracted by the FFT unit 20, the respiratory rate detection unit 24, and the heart rate detection unit 26, respectively, and the fluctuation component is extracted. The frequencies corresponding to the respiration and heart rate are detected as the respiration rate and heart rate of the detection target person 2, respectively.

  Therefore, according to the living body information detection apparatus of the present embodiment, unlike the conventional living body information detection apparatus using a microwave Doppler module, the detection subject 2 can breathe without providing a microwave generation source or transmitter. The number and heart rate can be detected.

  Therefore, according to the present embodiment, the configuration of the biological information detection device that can detect the respiration rate and heart rate of the person to be detected 2 in a non-contact manner can be simplified as compared with the conventional device, and the manufacturing cost thereof can be reduced. Can be reduced.

  Moreover, according to the biological information detection apparatus of this embodiment, since not only the respiration rate and heart rate of the detection subject 2 but also the skin temperature of the detection subject 2 can be detected, it can be used as a skin temperature detection device. The application of the biological information detection device can be expanded.

  The FFT unit 20, the skin temperature detection unit 22, the respiration rate detection unit 24, and the heart rate detection unit 26 are a microcomputer that performs various arithmetic processes such as discrete Fourier transform (FFT) or a digital filter, or digital calculation. It consists of a circuit.

  Of these, the FFT unit 20 corresponds to the Fourier transform unit of the present invention, the skin temperature detection unit 22 corresponds to the skin temperature detection unit of the present invention, and the respiratory rate detection unit 24 and the heart rate detection unit 26 include This corresponds to the breathing / heartbeat detecting means of the present invention.

In the present embodiment, the reception antenna 4 corresponds to the reception means of the present invention, and the reception amplification section 12, the detection section 14, and the detection amplification section 16 correspond to the detection means of the present invention.
[Monitoring equipment / air conditioning control equipment]
Next, FIG. 3 shows the overall configuration of the monitoring / control system that monitors the state of the person 2 to be detected and adjusts the indoor temperature by using the biological information detection apparatus of the present embodiment configured as described above. FIG.

  As shown in FIG. 3, this monitoring / control system, for example, installs a biological information detection device 10 above a bed 6 where a sick person who is a detection target 2 sleeps in a hospital or the like, and receives a millimeter wave by the receiving antenna 4. By adjusting the direction so as to face the chest, abdomen or back of the detection subject 2 sleeping on the bed 6, the skin temperature, respiratory rate, and heart rate of the detection subject 2 sleeping on the bed can be changed to clothing and bedding. The monitoring device 30 and the control device 40 of the air conditioner 50 are provided.

  The monitoring device 30 monitors the skin temperature, the respiratory rate, and the heart rate of the detection target person 2 based on the detection signals from the detection units 22, 24, and 26 of the biological information detection device 10, and when these are abnormal, to that effect Is notified to the surroundings (for example, a nurse center), and is composed mainly of a microcomputer that executes monitoring / alarm processing according to the procedure shown in FIG.

  Further, the control device 40 is also configured with a microcomputer as the center, and executes the air-conditioning control process shown in FIG. 5 to control the air-conditioning device 50 so that the temperature of the room is laid on the bed 6. The temperature is controlled to be suitable for the person 2 to be detected.

  The air conditioner 50 sucks indoor air, heats or cools it, generates temperature-conditioned air, and blows the generated air-conditioned air into the room to control the room temperature to an appropriate temperature. It is a so-called air conditioner.

And the control apparatus 40 controls indoor temperature to appropriate temperature by adjusting the temperature of the conditioned air which blows off indoors from the air conditioner 50. FIG.
Hereinafter, monitoring / alarm processing and air conditioning control processing executed by the monitoring device 30 and the control device 40, respectively, will be described.

  The monitoring / alarm processing shown in FIG. 4 is processing that is repeatedly executed every predetermined time in the monitoring device 30. When treatment is started, first, biological information detection is performed in S110 (S represents a step). The respiration rate of the person 2 to be detected is read from the device 10 and the read respiration rate is stored in a storage medium (nonvolatile memory, hard disk, etc.) in the monitoring device 30 together with the detection time.

  Next, in S120, it is determined whether or not the respiration rate read in S110 is within a set range (for example, 12 to 18 times per minute) set in advance as a normal range at rest. If it is not within the set range, the process proceeds to S130, and it is determined whether or not the duration time of the abnormal state in which the respiratory rate is out of the set range is equal to or greater than the preset abnormality determination time T1.

  If it is determined in S130 that the duration of the abnormal state is equal to or longer than the abnormality determination time T1, the process proceeds to S200, and an alarm is generated that the detection target person 2 has some abnormality.

  On the other hand, in S120, it is determined that the respiration rate is within the set range, or in S130, the duration of the abnormal state in which the respiration rate is out of the set range is not equal to or greater than the abnormality determination time T1. If it is determined, the process proceeds to S140.

  In S140, the heart rate of the person 2 to be detected is read from the biological information detection device 10, and the read heart rate is stored in a storage medium (nonvolatile memory, hard disk, etc.) in the monitoring device 30 together with the detection time.

  Next, in S150, it is determined whether or not the heart rate read in S140 is within a set range (for example, 55 to 75 times per second) set in advance as a normal range at rest. If it is not within the setting range, the process proceeds to S160, and it is determined whether or not the abnormality determination number of times that the heart rate is out of the setting range is equal to or greater than the preset setting determination number N1.

  If it is determined in S160 that the abnormality determination number of the heart rate is equal to or greater than the set determination number N1, the process proceeds to S200, and an alarm is generated that the detection target person 2 has some abnormality.

  On the other hand, if it is determined in S150 that the heart rate is within the set range, or if it is determined in S160 that the heart rate abnormality determination number is not greater than or equal to the set determination number N1, S170. Migrate to

  In S170, the skin temperature of the person 2 to be detected is read from the biological information detection device 10, and the read skin temperature is stored together with the detection time in a storage medium (nonvolatile memory, hard disk, etc.) in the monitoring device 30.

  Next, in S180, it is determined whether the skin temperature read in S170 is within a set range (for example, 36 ° C. to 37 ° C.) set in advance as a normal range, and the skin temperature must be within the set range. For example, the process proceeds to S190, and it is determined whether or not the abnormality determination number that the skin temperature is out of the setting range is equal to or greater than the preset setting determination number N2.

  If it is determined in S190 that the skin temperature abnormality determination number is equal to or greater than the setting determination number N2, the process proceeds to S200, and an alarm is generated that the detection target person 2 has some abnormality.

  On the other hand, if it is determined in S180 that the skin temperature is within the set range, or if it is determined in S190 that the skin temperature abnormality determination number is not equal to or greater than the setting determination number N2, the monitoring is performed.・ End alarm processing.

  Thus, in the monitoring device 30, the respiration rate, heart rate, and skin temperature of the detection target person 2 are sequentially read from the biological information detection device 10, and the read respiration rate, heart rate, and skin temperature are determined. By determining whether or not there is any abnormality in the detection target person 2 by determining whether or not it is within the set range set as the normal range, and if there is an abnormality in the detection target person 2 , Issue an alarm.

  For this reason, according to the monitoring device 30, when monitoring a sick person who is the detection target person 2 in a hospital or the like, the state of the sick person is monitored without contact without attaching various sensors to the detection target person 2. Can reduce the burden on the sick.

  Next, the air conditioning control process shown in FIG. 5 is a process that is repeatedly executed at predetermined time intervals in the control device 40. When the treatment is started, first, in S210, the monitoring device 30 performs the respiration rate and heart rate. The monitoring result of the number is read, and it is determined whether or not the respiration rate and the heart rate are detected on the monitoring device 30 side.

  This determination is a process for determining whether or not the detection target person 2 is on the bed 6 and the biological information detection apparatus 10 can normally detect the respiration rate and heart rate of the detection target person 2. And is executed based on the values of these parameters stored in the storage medium of the monitoring device 30.

  If it is determined in S220 that the respiration rate and the heart rate can be detected normally (that is, the person 2 to be detected is present), the process proceeds to S230, and the monitoring result of the skin temperature is obtained from the monitoring device 30. Read.

  If the skin temperature monitoring result is read in S230, the detection target person 2 is awake or is sleeping based on the respiratory rate and heart rate monitoring results read in S210. Determine whether.

  That is, when the detection target person 2 is sleeping, the respiration rate and the heart rate are lower than when the detection target person 2 is waking up. Therefore, in S230, the monitoring result of the respiration rate and heart rate by the monitoring device 30 From this, it is determined whether or not the person 2 to be detected has fallen asleep.

  If it is determined in S250 that the detection target person 2 is sleeping, the process proceeds to S260, and the indoor temperature is determined based on the skin temperature read in S230 and the preset control pattern during sleep. The air conditioner 50 is driven so that the temperature becomes the optimum temperature for the detection target person 2 during sleep, and the air conditioning control process is temporarily terminated.

  In S250, if it is determined that the detection target person 2 is not sleeping (that is, is waking up), the process proceeds to S270, and the skin temperature read in S230 and the preset normal control pattern Based on the above, the air conditioner 50 is driven so that the indoor temperature becomes the optimum temperature for the person 2 to be detected, and the air conditioning control process is temporarily terminated.

  On the other hand, if it is determined in S220 that the respiration rate and the heart rate are not detected (that is, the person 2 to be detected is not on the bed 6), the process proceeds to S280, and the state has elapsed for a certain period of time. Determine whether or not.

  If it is determined in S280 that the detection target person 2 has not been on the bed 6 for a certain period of time, the detection target person 2 determines that he / she has left the room for some purpose, and S300 Then, after stopping the driving of the air conditioner 50, the air conditioning control process is temporarily terminated.

  If it is determined in S280 that the detection target person 2 is not on the bed 6 for a certain period of time, it is determined that the detection target person 2 is in the room and the process proceeds to S290. Then, the skin temperature used in the previous air conditioning control in S260 or S270 is read, and the process proceeds to S270.

  In S270, based on the skin temperature read in S290 and the preset normal control pattern, the air conditioner 50 is driven so that the room temperature becomes the optimum temperature for the person 2 to be detected. The air conditioning control process is temporarily terminated.

  Thus, in the control apparatus 40, the monitoring result of the respiration rate and heart rate of the detection target person 2 is read from the monitoring apparatus 30, and whether the detection target person 2 is on the bed 6 from the read monitoring result. Judge whether or not.

  And when the detection subject 2 exists on the bed 6, it is judged whether the detection subject 2 is sleeping from the monitoring result of the respiratory rate and the heart rate, and the sleep control corresponding to the judgment result The air conditioning control corresponding to the skin temperature of the person 2 to be detected is executed using the pattern or the normal control pattern.

For this reason, according to the control apparatus 40 of this embodiment, control of the room temperature by the air conditioner 50 can be optimally controlled according to the skin temperature and sleep state of the person 2 to be detected.
Further, the control device 40 of the present embodiment board determines that the detection target person 2 is not in the room when the state in which the detection target person 2 is not present on the bed 6 elapses for a certain period of time. Stop driving.

For this reason, it is possible to prevent the air conditioner 50 from being operated unnecessarily and to save energy in the air conditioner 50.
In FIG. 3, the air conditioner 50 corresponds to the heating / cooling means of the present invention, and the control device 40 corresponds to the determination means and the control means of the present invention. In particular, the determination means of the present invention is realized by the processing of S210 and S220 executed by the control device 40, and the control means of the present invention is executed by the processing of S230 to S300 executed by the control device 40. Realized.

As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various aspect can be taken in the range which does not deviate from the summary of this invention.
For example, in the above-described embodiment, the biological information detection device 10 has been described as detecting the skin temperature, the respiratory rate, and the heart rate of the person 2 to be detected, but either the respiratory rate or the heart rate is detected. You may make it do. That is, even in such a case, the control of the air conditioner 50 can be realized.

  Moreover, although the said embodiment demonstrated the control apparatus 40 which controls the air conditioner 50 based on the detection result by the biometric information detection apparatus 10, even if the control apparatus 40 only controls the heater for heating. Alternatively, the humidity may be controlled in addition to the temperature by driving and controlling the humidifier.

  Moreover, in the said embodiment, the numerical value showing the normal range of a respiration rate, a heart rate, and skin temperature is an example, and can be changed suitably. Further, for example, these parameters change depending on the age and sex of the detection target person 2, so that the setting range used for normal / abnormal determination can be changed depending on the age and sex of the detection target person 2. Also good.

  Moreover, in the said embodiment, the biological information detection apparatus 10 is demonstrated as what receives the thermal noise of the millimeter wave band radiated | emitted from the detection subject 2, and detects skin temperature, a respiration rate, and a heart rate from the received signal. However, thermal noise (microwave) having a wavelength longer than that of the millimeter wave may be received.

  Then, since the loss of thermal noise when passing through an obstacle such as clothes worn by the detection subject 2 is reduced in this way, depending on the condition such as the type and thickness of the obstacle, The influence received can be reduced and the detection accuracy can be increased.

  2 ... detection target, 4 ... receiving antenna, 6 ... bed, 10 ... biological information detection device, 12 ... reception amplification unit, 14 ... detection unit, 16 ... detection amplification unit, 18 ... A / D conversion unit, 20 ... FFT , 22 ... skin temperature detector, 24 ... respiratory rate detector, 26 ... heart rate detector, 30 ... monitoring device, 40 ... control device, 50 ... air conditioner.

Claims (2)

Receiving means for receiving the thermal noise of the microwave band radiated from the detection subject;
A detection means for amplifying and detecting a reception signal from the reception means;
Fourier transform means for extracting a spectrum on the frequency axis of the received signal detected by the detection means;
A skin that extracts a spectrum corresponding to a direct current component from the spectrum on the frequency axis extracted by the Fourier transform means, and outputs the amplitude of the extracted spectrum as a detection signal representing the skin temperature of the detection target person Temperature detection means;
From the spectrum on the frequency axis extracted by the Fourier transform means, the spectrum having the maximum amplitude in the frequency band corresponding to the human respiratory rate or heart rate is extracted, and the frequency of the spectrum is detected. Breathing / heartbeat detecting means for outputting a detection signal representing a person's respiratory rate or heart rate;
A biological information detection apparatus comprising: Receiving means for receiving the thermal noise of the microwave band radiated from the detection subject;
A detection means for amplifying and detecting a reception signal from the reception means;
Fourier transform means for extracting a spectrum on the frequency axis of the received signal detected by the detection means;
A skin that extracts a spectrum corresponding to a direct current component from the spectrum on the frequency axis extracted by the Fourier transform means, and outputs the amplitude of the extracted spectrum as a detection signal representing the skin temperature of the detection target person Temperature detection means;
From the spectrum on the frequency axis extracted by the Fourier transform means, the spectrum having the maximum amplitude in the frequency band corresponding to the human respiratory rate or heart rate is extracted, and the frequency of the spectrum is detected. Breathing / heartbeat detecting means for outputting a detection signal representing a person's respiratory rate or heart rate;
Heating / cooling means for increasing or decreasing the temperature in the reception direction of the thermal noise by the receiving means;
A determination unit that determines whether or not there is a person to be detected in front of the reception direction of the thermal noise by the reception unit based on a detection signal from the respiration / heart rate detection unit;
When it is determined by the determination means that there is a person to be detected in front of the reception direction, the heating / cooling means is driven based on a detection signal from the skin temperature detection means, so that the temperature in the reception direction forward is determined. Control means for raising or lowering and stopping the driving of the heating / cooling means when it is judged by the judging means that there is no person to be detected ahead of the receiving direction;
A temperature control device comprising: