JP4117398B2 - Unconstrained biological information detection device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is intended to prevent sudden and serious accidents while sleeping for elderly people and sick people, to create a comfortable treatment environment, and to improve the efficiency of nursing in an aging society in the future. Just by sleeping on a worn biological information detection mat while a sick person or an elderly person is wearing clothes, the biological information from the biological information detection mat signal can be used to measure blood flow, heart rate / respiration rate, heart rate / respiration waveform and pulse. Wave propagation speed, heart rate value, heart rate waveform, respiration value, peak value of respiration waveform time series display and abnormality detection, pain detection, turn over detection, bed leaving detection, arrhythmia detection, 3D display of biological information, body temperature measurement can be performed. In addition, when a bed detection function for preventing wrinkles is activated or when a biological abnormality is automatically determined, a caregiver or nurse can be notified by sound or light. Moreover, it is a sensor that prevents elderly people from being lonely by managing multiple sensors with a personal computer installed in a nurse station and managing living body information by connecting two-way communication between an elderly house and a remote place. The present invention also relates to an unconstrained biological information detection device that prevents an accident caused by sudden infant death syndrome.
[0002]
[Prior art]
Conventionally, blood pressure has been measured by either manual or automatic methods, but it is necessary to wear a sphygmomanometer for each measurement, which places a heavy burden on elderly and sick people who require intermittent measurement. It was. In addition, there remains a problem that accurate measurement cannot be performed if blood pressure measurement is taken into consideration.
[0003]
[Problems to be solved by the invention]
In this way, blood pressure measurement is a heavy burden on the elderly sick person, so the vital check of the elderly person is far away. However, vital checks that are performed daily or intermittently are the key to prevent serious accidents, so it is important to continue measurement that matches the life cycle as much as possible.
[0004]
The present invention has been made paying attention to problems such as the troublesomeness of intermittent measurement due to conventional restraints and errors due to psychological effects at the time of measurement. Analyzes sensor output level, relative value of blood pressure, heart rate / respiration measurement, respiratory stop, abnormal heart rate, irregular pulse, turning over, pain, getting out of bed, body temperature, etc., and automatically managing biological information of elderly, sick, and infants An object of the present invention is to provide an unconstrained living body information detection apparatus capable of preventing illnesses and sudden serious accidents.
[0005]
[Means for Solving the Problems]
To solve the problems as described above, unrestrained biological information detection apparatus according to the first invention of the present application relates to two semiconductor pressure sensor for detecting a human body blood flow is arranged with a predetermined interval A biological information detection mat in which a plurality of sensor pairs are arranged, a multiplexer for extracting an output signal of a specific sensor pair from output signals of the plurality of sensor pairs, and an output signal of the specific sensor pair extracted by the multiplexer A heartbeat signal extracting means for extracting a heartbeat signal from the heartbeat signal extracted from the semiconductor pressure sensor of the specific sensor pair extracted by the multiplexer and a difference value between the heartbeat signal extracted from the other semiconductor pressure sensor Signal deviation measuring means for measuring the interval between the specific sensor pair extracted by the multiplexer and the heartbeat signal deviation value. Calculating means for calculating a pulse wave velocity of the particular sensor pairs, the pulse wave velocity, heart rate value and a display means for displaying the heart rate waveform and care record, the pulse wave velocity, heart rate value, heart rate waveform, time and care Unconstrained having printing means for printing a record, abnormality judging means for judging abnormality of pulse wave velocity and heart rate, and alarm output means for outputting an alarm to the outside when the abnormality judging means detects abnormality In the biological information detection apparatus, the signal deviation measuring unit sequentially measures a deviation value of the heartbeat signal for each of the plurality of sensor pairs, and the calculation unit calculates a distance between the semiconductor pressure sensors of the plurality of sensor pairs. The pulse wave propagation velocity is calculated for each of the plurality of sensor pairs divided by the deviation value, and the display means displays the pulse wave propagation velocity and the heart rate value of the plurality of sensor pairs in a three-dimensional manner. It is.
[0006]
An unconstrained living body information detecting device according to a second invention of the present application is the unconstrained living body information detecting device according to the first invention, wherein a breathing signal extracting means extracts a breathing signal from an output signal of the semiconductor pressure sensor. A respiratory abnormality determining means for determining a respiratory abnormality, the display means displays a respiratory waveform, a respiratory value, and a peak value of the respiratory waveform in time series, and the alarm output means includes the respiratory abnormality determining means. When an abnormality is detected, an alarm is output to the outside.
[0007]
An unconstrained living body information detecting device according to a third invention of the present application is the unconstrained living body information detecting device according to the first or second invention, wherein the living body information detecting mat includes an air mat and the air mat. The semiconductor pressure sensor is mounted.
An unconstrained living body information detecting device according to a fourth invention of the present application is the unconstrained living body information detecting device according to the first or second invention, wherein the living body information detecting mat is filled with a liquid. It is characterized by.
[0009]
An unconstrained living body information detecting device according to a fifth invention of the present application is the unconstrained living body information detecting device according to the first or second invention, wherein the semiconductor pressure sensor is attached to a tube. it is an [0010]
DETAILED DESCRIPTION OF THE INVENTION
(First Embodiment) The sensor arrangement in the biological information detection mat 7 of the unconstrained biological information detection apparatus according to the first embodiment of the present invention will be described below. In FIG. 1, a sensor a1 for detecting blood flow of a human body on the biological information detection mat 7 is connected to an input of the biological information analyzer 8, and a sensor b2 similar to the above is provided at a position L9 between the sensors a1 and the living body. Connected to the input of the information analyzer 8.
[0011]
(Second Embodiment) The sensor arrangement in the biological information detection mat 7 of the unconstrained biological information detection apparatus according to the second embodiment of the present invention will be described below. In FIG. 2, the sensors for detecting the blood flow of the human body on the biological information detection mat 7 are arranged in tandem, the sensor a1 is connected to the input of the biological information analyzer 8, and the sensor b2 is located at the distance L9 between the sensors a1. Connected to the input of the biological information analyzer 8, the sensors are arranged from the sensor b <b> 2 to the sensor n at an inter-sensor distance L <b> 9 as described above, and each sensor is connected to the input of the biological information analyzer 8.
[0012]
(Third Embodiment) The sensor arrangement in the biological information detection mat 7 of the unconstrained biological information detection apparatus according to the third embodiment of the present invention will be described below. In FIG. 3, the sensors for detecting the blood flow of the human body on the biological information detection mat 7 are arranged in a matrix, and the sensor YoXo10 is connected to the input of the biological information analyzer 8, and between the sensor YoXn11 and the sensor YoXo10 in the X direction. Each sensor is arranged at equal intervals, and each sensor is connected to the input of the biological information detector. The sensor Y1Xo12 is provided at the position of the inter-sensor distance L9 from the sensor YoXo10 and connected to the input of the biological information analyzer 8, and the sensor Y1Xo12 Each sensor is arranged at a distance L9 between the sensors in the Y direction between the sensors YnXo14, and each sensor is connected to an input of the biological information analyzer 8.
[0013]
(Fourth Embodiment) FIG. 4 is a schematic block diagram of an unconstrained biological information detection apparatus according to a fourth embodiment of the present invention, and FIG. 5 explains the operation of the unconstrained biological information detection apparatus. It is a timing chart. As shown in FIG. 4, the biological information detection output of the human body on the sensor a1, which is one of a pair arranged in the biological information detection mat 7 of Embodiment 4, is shown in FIG. The heartbeat signal (b) is extracted from the biological information detection output (a) by the heartbeat signal detector A22 and input to the signal deviation measuring unit 24. Further, the heartbeat signal (d) is extracted from the heartbeat signal detector B23 from the biological information detection output (c) of the human body on the sensor b, and the signal deviation measuring unit 24 inputted to the signal deviation measuring unit 24 receives the heartbeat signal (b ) And (d) are measured by the phase difference method, and the inter-sensor distance L9 is stored in advance in the blood flow calculation unit 25 input to the blood flow calculation unit 25, and the inter-sensor distance L9 is signaled. Divide by the phase difference (c) = Δθ, which is the signal deviation value obtained by the deviation measurement unit, and multiply by the coefficient k as necessary to obtain the pulse wave propagation velocity v by equation (1).
V = L / Δθ · k− (1)
The heart rate value is also measured by the blood flow calculation unit and output to the subsequent stage.
[0014]
Further, the signal deviation measuring unit is not limited to the phase difference method, for example, a method based on the time difference between the heartbeat signals (b) and (d), a method based on the frequency difference between the heartbeat signals (b) and (d), a Doppler method, etc. It is also possible to use a method for measuring the difference between the heartbeat signals (b) and (d).
[0015]
In addition, the blood flow calculation unit 25 includes a display unit 27 that displays the pulse wave velocity, heart rate, and heart rate waveform, which are outputs of the blood flow calculation unit 25, and care records and dates input from an external computer, A printer 28 necessary for printing out the contents displayed on the unit 27 and a blood flow / heart rate abnormality determination unit 30 for analyzing a human body abnormality from a pulse wave propagation speed, a heart rate value, and a heart rate waveform level are connected.
[0016]
Further, the output of the human body detection unit 29 that detects the presence or absence of a human body on the biometric information detection mat 9 is used only when there is a person on the biometric information detection mat 9 to analyze an abnormality in blood pressure, heart rate, and heartbeat level. The heartbeat abnormality determination unit 30 is connected to the blood flow / heartbeat abnormality determination unit 30 as an internal signal that functions.
[0017]
In addition, when the blood flow / heart rate abnormality determination unit 30 determines that there is an abnormality, the alarm output unit 31 has a buzzer / lamp, a separate display unit, or an internet compatible automatic for a remote location in order to notify the third party of abnormal biological information. Connected to the reporting unit 37.
[0018]
Further, the above-described configuration can be configured with a dedicated IC, hardware, and software.
[0019]
In addition, the present invention includes a system for centrally managing a plurality of fifth and sixth unconstrained biological information detecting devices of the present invention at one place in hospitals, elderly people, and other facilities that require biological management. .
[0020]
In addition, a system that comprehensively manages one or a plurality of biological information detection devices at remote locations using the Internet is included.
[0021]
(Fifth Embodiment) FIG. 6 is a schematic block diagram of an unconstrained biological information detecting apparatus according to a fifth embodiment of the present invention. FIG. 5 is a timing chart for explaining the operation of the fifth embodiment. In FIG. 6, the same parts as those in FIG. As shown in FIG. 6, among the sensors arranged in the biological information detection mat 9 of the fifth embodiment, two sensors adjacent in the column direction are taken as one pair, and the CPU of the blood flow calculation unit 25 sequentially sets each pair. Is connected to the input of the multiplexer which switches the sensor output. The output signal (a) of the sensor a1 is input to the heartbeat signal detector A22 via the multiplexer, while the output signal (c) of the sensor b2 is also input to the heartbeat signal detector B23 via the multiplexer. The output signal (c) is input, and the input is sequentially switched periodically at the timing of the CPU of the blood flow calculation unit 25. After the sensor an33 and the sensor bn34 which are the last pair in the column direction are switched, the sensor a1, Switch to sensor b2 pair.
[0022]
Further, the output of the heart rate signal detector A22 and the block diagram after the heart rate signal detector B23 are the same as those in the fourth embodiment described above, and the description thereof is omitted. Since the operation is the same as that of the previous embodiment except that a three-dimensional display function is added to the display of the display unit 27, the pulse wave propagation speed and the heart rate value / heart rate waveform are omitted.
[0023]
Also included is a function of an alarm output unit that calculates the relative pulse wave propagation speed obtained by multiplying the pulse wave propagation speed of the blood flow calculation unit by the heartbeat signal level value, makes a display and abnormality determination, and notifies a third party at the time of abnormality. .
[0024]
(Sixth Embodiment) FIGS. 7 and 8 are schematic block diagrams of an unconstrained living body information detection apparatus according to a sixth embodiment of the present invention. 7 and FIG. 8, the same parts as those in FIG. 4 and FIG. 7 and 8, the input of the respiratory signal extraction unit 35 is connected to the input of the heartbeat signal detection unit B23, and the respiratory signal is breathed from the biological information detection output (a) of FIG. The blood value is extracted by the blood flow calculation unit (cpu) 25 that is extracted by the signal extraction unit 35 and input to the blood flow calculation unit (cpu) 25, and the respiration value, respiration waveform, respiration waveform / respiration peak are displayed on the display unit 27. Display time series of values.
[0025]
In addition, the output of the blood flow calculation unit (cpu) 25 is connected to the input of the respiratory abnormality determination unit 36, and analysis of abnormalities in the respiratory value, respiratory waveform, respiratory waveform / respiration peak value, and presence / absence of a human body on the biological information detection mat 9 This is performed by the respiratory abnormality determination unit 36 using the output of the human body detection unit 29 for detecting the signal as an enable signal.
[0026]
Also, in order to notify the third party of abnormal biological information when the respiratory abnormality determination unit 36 determines an abnormality, the alarm output unit 31 includes a buzzer / lamp, a separate display unit, and a remote-oriented Internet compatible automatic notification unit 37. It is connected to notify abnormalities and to communicate other biological information including heartbeat, blood flow, and respiration bidirectionally.
[0027]
In addition, the blood flow calculation unit (cpu) 25 reports a human heartbeat / respiration arrhythmia, pain, turning over, detection of getting out of bed, and abnormalities of these biological information to the third party by the alarm output unit 31 and the automatic notification unit 37. Includes functions to perform.
[0028]
In addition, biometric information management may be performed by a personal computer in which a plurality of biometric information detection apparatuses according to the sixth embodiment, in which the above-described embodiments are added to the sixth and seventh aspects of the present invention, are installed in a nurse station.
[0029]
It is also possible to configure the above with a dedicated IC , hardware, software , and DSP.
[0030]
【The invention's effect】
As described above, since the information detection apparatus according to the present invention can measure the blood flow of the human body on the biological information detection apparatus mat without restriction, the psychological biological information changes at the time of measurement of the presenter compared with the conventional type. Because it is less, it is kind to people and the measurement value is accurate.
[0031]
In addition, privacy management is ensured in the biological information management of the human body in the unconstrained biological information detection apparatus of the present invention.
[0032]
In addition, the unconstrained living body information detection apparatus of the present invention can be viewed as a three-dimensional view of blood flow, heartbeat and other living body information of the human body, so that it can be applied as an unprecedented living body information and living body abnormality management / measurement device. I can expect things.
[0033]
In addition, the unconstrained living body information detection apparatus of the present invention is economical because it can manage heart rate, blood flow, respiratory measurement and abnormality analysis, arrhythmia, turning over, pain situation analysis, body temperature measurement and other biological information with a single sensor. And environmentally friendly.
[0034]
In addition, the unconstrained biological information detection device of the present invention is a serious accident because an alarm is automatically activated when biological information that can be analyzed by this device is found to be abnormal and can notify a third party by sound or light. Can be prevented.
[0035]
In addition, the unconstrained living body information detection apparatus of the present invention can comprehensively manage a plurality of devices with a personal computer, so that the care and nursing efficiency is improved and the work load is reduced.
[0036]
In addition, the unconstrained living body information detection apparatus of the present invention can perform comprehensive management from a remote location on the Internet, so that care and nursing efficiency is improved.
[0037]
Moreover, since the unconstrained living body information detection apparatus of the present invention can notify the outside of the elderly living alone through the communication line, it can prevent lonely death.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a sensor array in a biological information detection mat according to a first embodiment of the present invention.
FIG. 2 is a diagram illustrating a sensor arrangement in a biological information detection mat according to a second embodiment of the present invention.
FIG. 3 is a diagram illustrating a sensor array in a biological information detection mat according to a third embodiment of the present invention.
FIG. 4 is a schematic block diagram of an unconstrained biological information detection device according to a fourth embodiment of the present invention.
FIG. 5 is a timing chart for explaining the operation of the unconstrained biological information detection apparatus according to the fourth and fifth embodiments of the present invention.
FIG. 6 is a schematic block diagram of an unconstrained biological information detection device according to a fifth embodiment of the present invention.
FIG. 7 is a schematic block diagram of an unconstrained biological information detection device according to a sixth embodiment of the present invention.
FIG. 8 is a schematic block diagram of an unconstrained biological information detection apparatus according to a sixth embodiment of the present invention.
[Explanation of symbols]
1 sensor a 21 output signal YnXn
2 sensor b 22 heart rate signal detector A
3 Output signal a 23 Heart rate signal detector B
4 output signal b 24 signal deviation measurement unit 5 sensor n 25 blood flow calculation unit 6 output signal n 26 external computer 7 biological information detection mat 27 display unit 8 biological information analyzer 28 printer 9 inter-sensor distance L 29 human body detection unit 10 sensor YoXo 30 Blood flow / heart rate abnormality determination unit 11 Sensor YoXn 31 Alarm output unit 12 Sensor Y1Xo 32 Multiplexer 13 Sensor Y1Xn 33 Sensor an
14 sensor YnXo 34 sensor bn
15 Sensor YnXn 35 Respiration signal extraction unit 16 Output signal YoXo 36 Respiration abnormality determination unit 17 Output signal YoXn 37 Automatic notification unit 18 Output signal Y1Xo
19 Output signal Y1Xn
20 Output signal YnXo

Claims (5)

A biological information detection mat in which a plurality of sets arranged sensor pairs formed by two semiconductor pressure sensor for detecting a human body blood flow and arranged at a predetermined interval,
A multiplexer for extracting an output signal of a specific sensor pair from the output signals of the plurality of sensor pairs;
A heartbeat signal extracting means for extracting a heartbeat signal from an output signal of the specific sensor pair extracted by the multiplexer;
A signal deviation measuring means for measuring a deviation value between the heartbeat signal extracted from the semiconductor pressure sensor of the specific sensor pair extracted by the multiplexer and the heartbeat signal extracted from the other semiconductor pressure sensor;
An arithmetic unit that calculates the pulse wave propagation velocity of the specific sensor pair by dividing the interval between the specific sensor pairs extracted by the multiplexer by the deviation value of the heartbeat signal;
Display means for displaying a pulse wave velocity, a heart rate value, a heart rate waveform and a care record;
A printing means for printing a pulse wave velocity, a heart rate value, a heart rate waveform, a date and time, and a care record;
An abnormality judging means for judging an abnormality of the pulse wave velocity and the heart rate value;
In the unconstrained living body information detection apparatus having alarm output means for outputting an alarm to the outside when the abnormality determination means detects an abnormality ,
The signal deviation measuring means sequentially measures a deviation value of a heartbeat signal for each of the plurality of sensor pairs,
The computing means calculates the pulse wave velocity for each of the plurality of sensor pairs by dividing the distance between the semiconductor pressure sensors of the plurality of sensor pairs by the deviation value of the heartbeat signal,
The display means three-dimensionally displays a pulse wave velocity and a heart rate value of the plurality of sensor pairs.
An unconstrained living body information detecting device characterized by that. Respiration signal extraction means for extracting a respiration signal from the output signal of the semiconductor pressure sensor;
  In addition to having a respiratory abnormality judging means for judging respiratory abnormality,
  The display means displays a respiratory waveform, a respiratory value, and a peak value of the respiratory waveform in time series,
  The alarm output means outputs an alarm to the outside when the respiratory abnormality determination means detects an abnormality.
  The unconstrained living body information detection device according to claim 1 characterized by things. The living body information detection mat includes an air mat, and the semiconductor pressure sensor is mounted on the air mat.
  The unconstrained living body information detection device according to claim 1 or 2 characterized by things. The biological information detection mat has a liquid sealed therein.
  The unconstrained living body information detection device according to claim 1 or 2 characterized by things. The semiconductor pressure sensor is mounted on a tube.
  The unconstrained living body information detection device according to claim 1 or 2 characterized by things.

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