JPH09135819A - Health condition control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To pertinently advise and guide a user by monitoring his/her health condition on the basis of a blood circulation state obtainable from a pulse wave. SOLUTION: A pulse wave sensor 4 measures the pulse wave of a user's finger tip capacity and an acceleration sensor 5 calculates an acceleration value on the basis of the user's motion. Also, output signals from the sensors 4 and 5 are converted into digital signals with a sensor interface 6. CPU 1 makes judgement as to whether the user is moving or not, based on the acceleration value read from the interface 6. Thereafter, according to the result of the judgement, the CPU 1 reads in pulse waves before and after the user's motion, thus finding an acceleration pulse wave. Then, the CPU 1 calculates the ratio of amplitudes at inflection points included in the waveform of the acceleration pulse wave. Also, the CPU 1 evaluates the user's motion, based on the amplitude ratio before and after the motion, and causes a display device 7 to show the result of the evaluation.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention monitors the health condition of a user based on information obtained from the state of blood circulation,
The present invention relates to a health condition management device that gives appropriate advice and guidance to the user.

[0002]

2. Description of the Related Art In recent years, an aging society has been further advanced, and health problems of middle-aged and elderly people, mainly adult diseases, have been widely taken up, and various causes have been cited as causes of these diseases. As one of the causes, evidence has been found to be caused by insufficient blood circulation. When blood circulation becomes insufficient, tissues and cells cannot receive the supply of oxygen and nutrients required. If such a state persists for a long period of time, organic lesions are prepared in organs and tissues, and when this progresses to a certain extent, symptoms suddenly appear.

Under these circumstances, various attempts have been made to determine the quality of blood circulation, which is the basis of organic lesions, before the progress of organic lesions and to utilize them for disease prevention. Therefore, in the past, the quality of blood circulation was judged by focusing on blood pressure, changes in electrocardiogram, blood cholesterol, and neutral fat concentration as risk factors.

However, in practice, stroke and heart failure often occur even if the blood pressure is low, and on the other hand, even with high blood pressure, there are some people who are old and still alive. Furthermore, even if there are considerable organic changes, they are often not found in the electrocardiogram. Even in such a case, if the organic change further progresses, it can be detected by the inspection instrument, but it will be lost later.

In recent years, however, the acceleration pulse wave has been found to be effective as an indicator of the quality of blood circulation, and has attracted attention. Therefore, first, the acceleration pulse wave, which is a measure of blood circulation, will be outlined. As is well known, the basis of blood circulation lies in how well blood extruded from the heart transits from arteries to tissue / organ capillaries to veins.

On the other hand, since the supply of oxygen and nutrients is carried out in capillaries, and the good or bad of blood circulation is related to the hemodynamics of the microvessels, the transition of blood content in capillaries is good for blood circulation. It is considered as a guide. I mean,
A small difference between the terminal arterial blood pressure and the venous blood pressure causes a subtle difference in the nutritional supply and gas exchange in the capillaries, which causes the difference to be magnified over a long period of time, and the tissue and organs should be organically changed. This is because a lesion is considered to occur.

Therefore, as one of the methods for observing the temporal change of blood content of capillaries, the examination of the finger plethysmogram has become the mainstream. However, the fingertip plethysmogram itself has a waveform with relatively few undulations, and therefore, it was considered difficult to interpret subtle changes in the waveform. Further, it has been said that there is a problem that the changes related to blood circulation are minute and yet they react sensitively to environmental changes of the living body.

However, the blood circulation is expanded and extracted by taking the differential of the waveform of the fingertip plethysmogram and converting it into a changing acceleration waveform (that is, an acceleration pulse wave waveform). The state of can be displayed in an easy-to-understand form. FIG. 14A is an example of the original waveform of the fingertip volume pulse wave, and FIG. 14B shows the waveform of the velocity pulse wave which is the one-time derivative of the waveform of FIG. ) Is shown in FIG.
The waveform of the acceleration pulse wave which is the second differentiation of the waveform of (a) is shown.

FIG. 15 shows a typical waveform of an acceleration pulse wave extracted. As shown in the figure, three peaks and two valleys are present in one waveform of the acceleration pulse wave. That is, valley b is seen after the first peak a, followed by peak c, valley d, and peak e,
The peak e to the peak a of the next waveform is substantially flat.
However, except for the peak a, each point may not be a peak or valley, but may be an inflection point.

Here, the above-mentioned peak and valley amplitudes are
Each has the following meanings. First, the peak a is a signal in which the blood delivered from the heart reaches the capillary bed of the fingertip. Further, the valley b is related to the cardiac output, and when the cardiac output is large, the valley b is greatly lowered.

Further, the peak c is related to venous return and can be said to indicate whether or not the venules are appropriately contracted to pool blood excessively when viewed from a blood circulation scale. With good venous return, peak c may rise near or above baseline. On the other hand, when the blood pool of venules increases, peak c stops increasing,
It may be below the valley b. On the other hand, the valley d is involved in the burden on the heart, and it greatly drops as the burden on the heart increases. The peak e corresponds to the position of the post-constriction ridge of the finger plethysmogram, but no specific meaning has been found.

[0012] It is known that the problem of blood circulation captured from the acceleration pulse wave is improved by endurance training such as jogging. Moreover, even a single training has a temporary improvement effect, and if continuous training is carried out, a more stable improvement effect will be recognized. On the other hand, if the training is interrupted, the blood circulation will be deteriorated again. Therefore, it can be said that the degree of such improvement in blood circulation can be known by analyzing the acceleration pulse wave.

By the way, Japanese Patent Laid-Open No. 57-93036 can be cited as an invention that attempts to determine the quality of blood circulation of a subject by analyzing the acceleration pulse wave of the subject. The pulse wave can be observed at fingertips, earlobe, and various other parts. In this document, however,
Especially, the finger plethysmography is to be measured. this is,
The fingertip is the place where the capillaries are most developed and the blood content is high in capturing the blood transfer from the artery to the vein. Since the fingertip is always exposed, the pulse wave measuring device is used. This is because it can be freely brought close to, and the structure of the measuring device can be simplified.

Next, FIG. 16 shows the structure of the acceleration sphygmograph according to the invention described in the above document. This apparatus comprises a fingertip pulse wave pickup 200, a preamplifier 201, an operational amplifier 202, a feature extraction circuit 203 having two stages of analog differentiating circuits by a CR circuit, and an oscillograph 204, which are connected in cascade. In addition, the fingertip pulse wave pickup 20
0 is an opening 20 for inserting the finger 205 of the subject.
6, a light source 207, and a photoelectric element 208.

On the oscillograph 204, there are three kinds of graphs of the waveform of the pulse wave, the one-time differential waveform of the pulse wave calculated by the feature extraction circuit 203, and the two-time differential waveform of the pulse wave. be painted. Therefore, it is possible to determine the quality of blood circulation of the subject based on the acceleration pulse wave displayed on the oscillograph 204.

First, as a first determination method, the waveforms of the acceleration pulse wave are three ways of valley b> valley d, valley b≈valley d, valley b <valley d according to the depth of valley b and valley d. Categorize into. Further, the patterns typified by the depths of the valleys b and d based on the height of the peak c with respect to the base line are further classified into three types. Then, it is determined which of these patterns the waveform of the measured acceleration pulse wave is closest to.

As the second determination method, attention is paid to the height of the peak c with respect to the base line and the depth of the peak d with respect to the base line. Then, as shown in FIG. 17, the depth of the valley b is divided into, for example, four equal parts, and each divided region is represented as 0, 1, ..., 5 points in the order closer to the base line. Furthermore, from the existing positions such as the height of the peak c and the depth of the peak d, the number of points corresponding to each is obtained,
The judgment is made by digitizing the quality of the blood circulation of the subject.

In this document, as an application example, 1) instead of the CR circuit, the measured value of the pulse wave is A / D.
Digitize with (analog / digital) converter,
A digital processing is performed by a microcomputer to calculate an acceleration pulse wave. 2) The waveform of the acceleration pulse wave is differentiated one more time to obtain a third-order differential waveform. 3) In order to correct the fluctuation of the time interval of the pulse wave due to the respiratory action, the arithmetic mean of the corresponding peaks and valleys of the repeated waveforms of a plurality of pulse waves is calculated. Those that are adapted to be subjected to statistical processing such as taking are considered.

On the other hand, as an invention that has developed the above technique, there is a technique described in Japanese Patent Application Laid-Open No. 2-55035. Therefore, the configuration of the acceleration sphygmograph according to this document is shown in FIG. As shown in this figure, the pulse wave detection unit 300 includes a photodetector including a lamp 301 and a photoelectric element 302 that are provided so as to face each other in a recess for inserting a fingertip. Is resistance 303
Forms a bridge circuit with ˜306. The output of the bridge circuit is amplified by the differential amplifier 307, and the brightness of the lamp 301 is adjusted by the switch S so that the bridge circuit is balanced. The symbol V is a power supply voltage.

The output of the differential amplifier 307 is further amplified by the amplifier 308. The amplified output is
The waveform shaping circuit 309 clips a voltage equal to or higher than a predetermined reference voltage to shape a rectangular wave. Further, this output is differentiated by the differentiation circuit 310, and a differential pulse in the negative direction is generated by the rectification circuit 311 to trigger the one-shot multi 312. Then, a rectangular wave having a time width T ₀ is obtained at the output of the one-shot multi 312.

Further, the gate circuit 313 allows the output of the differential amplifier 307 to pass through during the above-mentioned time width T ₀ . The output signal of the gate circuit 313 is the differentiation circuit 314,
By passing it through 315, the secondary differential output of the pulse wave signal is obtained at the output of the differentiating circuit 315. Also, the waveform shaping circuit 316
Generates a sampling pulse at its output at the time when valley b, peak c, and valley d appear. The sampling circuit 317 samples the output of the differentiating circuit 315 that has passed through the delay circuit 318 according to this sampling pulse, and stores it in the sequential storage circuit 319. Further, the maximum value detection circuit 320 reads the contents of the sequential storage circuit 319 and stores the maximum value among the amplitudes of valley b, peak c, and valley d. Then, the output of the maximum value detection circuit 320 is divided by the voltage dividing circuit 321, and each divided voltage is output.

Further, the control circuit 322 sequentially outputs the voltages of the valley b, the peak c, and the valley d which are the outputs of the sequential storage circuit 319. This output is input to the pulse height analyzer 323, which uses the output value of the voltage dividing circuit 321 as a comparison voltage and based on the voltages of valley b, peak c, and valley d. Normalized value (for example, the ratio c / b,
d / b and ratios b / a, c / a, d / a, etc.) output terminal OP
Output to

The output waveform at the output terminal OP is judged by a microcomputer or the like to which of the waveform patterns of the acceleration pulse wave typified in advance,
The result is displayed. In making this decision, first
It is determined which of the voltage division bands divided by the voltage dividing circuit 321 the normalized sizes of the valley b, the peak c, and the valley d belong. Then, the measured pulse wave is calculated based on the magnitude relationships of the voltage division bands to which each of the valleys b, peaks c, and d belongs, and the vertical relationship between the baseline and each of the valleys b, peaks c, and valleys d. It is classified into any one of the patterns, and the quality of blood circulation is determined.

[0024]

As described above, in order to maintain good health, it is necessary to keep the blood circulation in good condition. To do this, exercise appropriately and maintain a good condition for as long as possible. It is essential to maintain it for the whole period. However, in the conventional acceleration sphygmograph, the information extracted from the acceleration sphygmograph is simply presented to the subject, so it is necessary to be accompanied by a specialist doctor or a nurse educated by a doctor. . However, each time a large number of patients exercise, the doctors and nurses evaluate the results and instruct the patients about the next exercise to be performed. It can be said that it is too much and does not fit the reality of medical care.

However, it is very troublesome and inconvenient for the user of the device to judge the quality of blood circulation without the attendance of a specialist doctor or nurse. Further, there is no guarantee that even if an exercise is conducted without the attendance of doctors, it is possible to carry out an exercise of the same quality as the exercise that would have been instructed if the doctors were present. Therefore, when performing interval training or rehabilitation, various problems occur such that exercise is too weak to exert an effect, and conversely, exercise is too strong to have an adverse effect.

On the other hand, even if the doctor is expected to seek guidance from the doctor every two to three weeks, there is a risk that it will be a pain to go to the doctor's place and regular guidance may not be enough. As described above, it has been very doubtful that effective exercise guidance can be provided by using a conventional device. The present invention has been made in view of the above points, and its purpose is to:
The health condition of the user can be monitored based on the blood circulation condition obtained from the pulse wave, and appropriate advice and guidance can be given to the user. In addition, the user can easily handle the health condition. To provide a state management device.

[0027]

In order to solve the above-mentioned problems, the invention according to claim 1 is a pulse wave measuring means for measuring the pulse wave of a user, and a body for measuring the body movement of the user. Motion measuring means, when the measurement result of the body motion measuring means is less than a predetermined value, a calculating means for obtaining an index representing the state of blood circulation of the user from the waveform of the pulse wave, and the use of the index It is composed of a notification means for notifying the person.

The invention according to claim 2 is a pulse wave measuring means for measuring a pulse wave of a user, a pulse wave measuring instruction detecting means for detecting a measuring instruction of the pulse wave by the user, and the pulse wave measuring means. While a wave measurement instruction is issued, it comprises a calculation means for obtaining an index representing the state of blood circulation of the user from the waveform of the pulse wave, and a notification means for notifying the user of the index. is there. The invention according to claim 3 is the invention according to claim 1 or 2, wherein the calculating means obtains an acceleration pulse wave of the pulse wave, and a plurality of peaks and a plurality of valleys appearing in the acceleration pulse wave are calculated. It is characterized in that two of the above are selected and the amplitude ratio thereof is obtained and used as the index.

The invention according to claim 4 is the invention according to claim 3, wherein the calculating means divides the amplitude value of the second valley appearing in the acceleration pulse wave by the amplitude value of the first peak. A value is used as the index. The invention according to claim 5 is the invention according to claim 1 or 2, wherein the calculating means calculates a time interval between adjacent pulse waves, and performs spectrum analysis on fluctuations in the time interval. The index value is the amplitude value of the spectral component obtained by the analysis. The invention according to claim 6 is the invention according to claim 1 or 2, wherein the calculating means calculates a time interval between adjacent pulse waves, and performs spectrum analysis on fluctuations in the time interval. The index is calculated by calculating the ratio of the amplitude of the low frequency spectrum component and the amplitude of the high frequency spectrum component obtained by the analysis.

The invention according to claim 7 is the invention according to claim 1 or 2, wherein the calculating means calculates time intervals between adjacent pulse waves, and a fluctuation amount of the continuous time intervals is predetermined. The index is characterized by the number exceeding the time. The invention according to claim 8 is the invention according to claim 1, further comprising pulse measuring means for measuring the pulse rate of the user, and the measurement result of the body movement measuring means exceeds the predetermined value. In this case, the notifying means notifies the user of the measurement result of the pulse rate.

According to a ninth aspect of the invention, in the invention of the first aspect, the index when the measurement result of the body movement measuring means is less than or equal to the predetermined value and the measurement result of the body movement measuring means are After the predetermined value is exceeded, the index when it becomes the predetermined value or less again is measured, and an evaluation unit that evaluates the exercise performed by the user based on the difference between these indexes is provided. The notifying means is characterized by notifying the user of the evaluation result of the exercise.

The invention according to claim 10 is the same as claim 2
In the invention described, a pulse measuring means for measuring the pulse rate of the user, and a pulse measurement instruction detecting means for detecting a measurement instruction of the pulse rate by the user, the informing means, the pulse measurement It is characterized in that the measurement result of the pulse rate is notified to the user while the instruction is given.

The invention described in claim 11 is the same as claim 2
In the invention described, at the time when the user gives the pulse wave measurement instruction after the exercise, and the index obtained at the time when the user gives the pulse wave measurement instruction before the start of exercise. It has an evaluation unit that takes in the obtained index and evaluates the exercise performed by the user based on the difference between these indices, and the notification unit notifies the user of the evaluation result of the exercise. It is characterized by that.

The invention according to claim 12 is the same as claim 2
In the invention described, a body movement measuring means for measuring the body movement of the user, and a body movement detecting means for detecting that the measurement result of the body movement exceeds a predetermined value, the notifying means, While the pulse wave measurement instruction is issued, if the measurement result of the body movement exceeds a predetermined value, a warning is issued to the user.

The invention according to claim 13 is the same as claim 1.
Alternatively, in the invention described in 2, the exercise performed by the user is composed of a plurality of stages, and the target value of the index to be achieved by the exercise of each stage is stored in advance for each stage. Means, at the time when the user has finished the exercise of each stage, having a comparison means for comparing the index calculated by the calculating means and the target value corresponding to each exercise stage, the result of the comparison, When the index calculated by the calculating means has reached the target value, the notifying means notifies the user to perform the exercise in the next stage.

The invention according to claim 14 is the same as claim 1
Or the storage means for storing the index obtained at a predetermined time and the moving average of the index in the past predetermined period, and the past index obtained at the same time as the present time is read from the storage means. Then, a moving average of the index and the current index is calculated and stored in the storage unit together with the current index, and a difference between the moving average of the index in the past predetermined period and the current index is calculated. It has a control means for comparing with a predetermined value, and if the difference is more than a predetermined value, the notifying means warns the user.

[0037]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. First, the type of the acceleration pulse wave waveform used in this embodiment will be described. FIG. 2 (a) shows various types of acceleration pulse wave waveforms. When the blood circulation is good, the valley b greatly falls with respect to the peak a, the peak c rises up to near the baseline, and a waveform with little fall of the valley d (the same figure) is seen. On the other hand, when the blood circulation becomes insufficient, the burden on the heart increases, and the valleys b and d become about the same (FIG. 6). Furthermore, when blood circulation becomes seriously worse, the waveform in which the valley d is lower than the valley b (the same figure), the peak c is in the same position as the valley b (the same figure), and the peak c is the valley b Waveform below (same figure)
And so on.

The measured acceleration pulse wave is shown in FIG.
As a criterion for determining which of the above patterns, as shown in FIG. 2B, it is possible to use the ratio of the amplitude of the peak a to the amplitude of the other peaks or valleys. First, when the amplitude ratio d / a between the valley d and the peak a is used as a reference, if this value is within 10%, the pattern, 1
If it is 0 to 35%, it is classified into patterns, if it is 35 to 60%, it is classified into patterns, and if it is 60 to 100%, it is classified into patterns or.

On the other hand, the amplitude ratio c / a between peak c and peak a
When this value is within -10%, the pattern is within 10%, the pattern is within 10-15%, the pattern is within -15%, the pattern is within 0-20%, and the range is within 20-40%. If there is 40% or more, it is classified into a pattern. However, the pattern ~
Since the ranges overlap with each other, they are used only for distinguishing the patterns ~ or used in combination with the value of the amplitude ratio d / a. The amplitude ratio may be negative, which means that the peak c and valley d are located above the baseline.

Here, when focusing on one user, it can be said that the closer the waveform of the acceleration pulse wave of the user is to the pattern, the better the health condition is. On the contrary, the closer the pattern is to the pattern, the worse the health condition is. The tendency is seen. In this way, the health condition of the user can be inferred by observing the waveform of the acceleration pulse wave. For example, ischemic heart disease (myocardial infarction or angina) or cerebrovascular disorder (stroke or subarachnoid hemorrhage). It is also considered to be useful for predicting the occurrence of.

On the other hand, when the relationship between the age of the user and the acceleration pulse wave is examined, there is a tendency that the waveform of the acceleration pulse wave shifts from pattern to pattern with aging. Therefore, the waveform of the acceleration pulse wave measured by the user is
If it is extremely biased toward the pattern side compared to the waveform of the acceleration pulse wave estimated from the age of the person, it can be inferred that it is also a sign of the above-mentioned disease.

[First Embodiment] Next, the configuration of the health management apparatus according to the present embodiment will be described. FIG. 1 is a block diagram showing the configuration of the device. In this figure, the CPU
The (central processing unit) 1 is a central part that controls each circuit in the health management apparatus, and its function will be described in the section of the operation described later.

The ROM (Read Only Memory) 2 has C
A control program executed by the PU 1 and various control data are stored, and a target value of exercise intensity for realizing a desired exercise corresponding to the pattern of the user's health condition such as the amplitude ratio d / a. The (average exercise intensity), the upper limit value and the lower limit value of the exercise intensity, and the target value of the exercise time are stored. RAM (random access memory) 3
Is used as a work area (for example, a storage area for the total amount of exercise during exercise) when the CPU 1 performs an operation, and also stores measured values from various sensors described below and operation results.

The pulse wave sensor 4 is an optical pulse wave detection sensor mounted on the finger of the user (or the carrier) of the apparatus, for example, the second finger. This pulse wave sensor 4 is, for example,
It is composed of a light emitting diode and an optical sensor using a phototransistor or the like. Then, the light emitted from the light emitting diode is reflected through the blood vessel under the skin, received by the optical sensor and photoelectrically converted, and as a result, a pulse wave detection signal is obtained. In consideration of the signal-to-noise (SN) ratio, it is preferable to use a blue light emitting diode as the light emitting diode.

The acceleration sensor 5 is a body movement sensor for detecting the movement of the user's body, and is attached to the same place as the pulse wave sensor 4 described above, for example, a finger of the hand. The sensor interface 6 includes a pulse wave sensor 4 and an acceleration sensor 5.
Of the analog signal are captured at predetermined intervals, and the captured analog signal is converted into a digital signal and output.

The display device 7 is a device for displaying various information such as messages to the user, and is, for example, a liquid crystal display device provided in a wristwatch. Further, the display control circuit 8 receives the display information from the CPU 1, converts the display information into a format used by the display device 7, and causes the display device 7 to display. In addition to the normal timekeeping function, the clock circuit 9 has a CPU function at the time when the CPU 1 reaches a preset time or when the CPU 1 preset time elapses.
1 has a function of sending an interrupt signal.

Here, the health condition management device is referred to as a "portable device".
As a method of attaching to a human body, several modes are conceivable. One example is shown below, but it is naturally possible to combine with various portable devices other than these. First,
As a first mode, there is a mode in which it is combined with a wristwatch as shown in FIG.

As shown in this figure, the health condition management apparatus according to this embodiment has a device body 100 having a wristwatch structure.
A cable 101 connected to the apparatus main body 100, and a sensor unit 1 provided on the tip side of the cable 101.
02. In addition, in the device body 100,
A wristband 103 is attached, which is wrapped around the user's arm from 12 o'clock of the wristwatch and fixed at 6 o'clock of the wristwatch. The device body 100 is detachable from the user's arm by the wristband 103.

The sensor unit 102 is shielded from light by the sensor fixing band 104, and is mounted between the base of the index finger of the user and the second knuckle. When the sensor unit 102 is attached to the base of the finger in this way,
The cable 101 can be short, and the cable 101 does not interfere with the user during exercise. Also, when measuring the distribution of body temperature from the palm to the fingertip, it is known that the temperature at the fingertip decreases significantly when the ambient temperature is low, whereas the temperature at the base of the finger does not decrease relatively. Has been.
Therefore, if the sensor unit 102 is attached to the base of the finger, the pulse rate and the like can be accurately measured even when exercising outdoors on a cold day.

On the other hand, on the front side of the wristwatch at 6 o'clock,
A connector section 105 is provided. This connector part 1
A connector piece 106 provided at the end of the cable 101 is detachably attached to the cable 05, and by removing the connector piece 106 from the connector portion 105, this device can be used as an ordinary wrist watch or a stopwatch. . For the purpose of protecting the connector portion 105, a predetermined connector cover is attached when the cable 101 and the sensor unit 102 are removed from the connector portion 105. As the connector cover, a component having the same configuration as that of the connector piece 106 except for an electrode portion and the like is used.

According to the connector structure configured as described above, the connector portion 105 is arranged on the near side as viewed from the user, and the operation is simplified for the user. Further, since the connector portion 105 does not project from the device body 100 in the 3 o'clock direction of the wristwatch, the user can freely move his / her wrist during exercise, and even if the user falls down during exercise, The back of the hand does not hit the connector section 105.

The other parts in FIG. 3 will be described in detail below with reference to FIG. FIG. 4 shows the details of the apparatus main body 100 in this embodiment.
It is shown with the cable 101 and the wristband 103 removed. Here, in the figure, the same parts as those in FIG. 3 are designated by the same reference numerals, and the description thereof will be omitted here.

In this figure, the apparatus main body 100 is equipped with a resin watch case 107. Watch case 107
A liquid crystal display device 108 for digitally displaying pulse wave information such as the pulse rate in addition to the current time and date is provided on the surface of the. The liquid crystal display device 108 includes a first segment display area 108-1 located on the upper left side of the display surface,
The second segment area 108-2 located on the upper right side, the third segment area 108-3 located on the lower right side, and the dot display area 108-D located on the lower left side.

Here, the date, day of the week, current time, etc. are displayed in the first segment area 108-1. Further, in the second segment area 108-2, elapsed time and the like are displayed when various time measurements are performed. In the third segment area 108-3, the pulse rate measured in the pulse wave measurement and the like are displayed. Further, various kinds of information can be graphically displayed in the dot display area 108-D, and a mode display showing what mode the present apparatus is in at a certain time, the original waveform of the pulse wave / the velocity pulse Waveform / acceleration pulse wave waveform display, bar graph display of temporal changes in pulse rate, and other various displays are possible.
The above-mentioned modes include a mode for setting the time and date, a mode for using as a stopwatch, and the like, in addition to the original mode used as a health management apparatus.

On the other hand, inside the watch case 107, there is built-in a control unit 109 for performing signal processing for displaying changes in the pulse rate on the liquid crystal display device 108. The control unit 109 includes a clock circuit for clocking, and the liquid crystal display device 108 displays not only a normal time display but also a lap time, a split time, and the like in a mode operating as a stopwatch. It

On the other hand, button switches 111 to 117 are provided on the outer peripheral portion and surface portion of the watch case 107. When the button switch 111 in the 2 o'clock direction of the wristwatch is pressed, an alarm sound is generated when one hour has elapsed from the time when the button was pressed. Further, the button switch 112 in the 4 o'clock direction of the wristwatch is for instructing the switching of various modes which this device has as a normal timepiece.

When the button switch 113 located at 11:00 on the wristwatch is pressed, the EL (Electro
Luminescence) The backlight lights up for 3 seconds,
After that, it goes out automatically. Further, the button switch 114 in the 8 o'clock direction of the wristwatch is for the dot display area 10
This is for switching the type of graphic display to be displayed on 8-D. Further, by pressing the button switch 115 at the 7 o'clock position of the wristwatch, it is possible to switch which of hour, minute, second, year, month, day, and 12/24 hour display switching is set in the mode for correcting the time and date. it can.

The button switch 116 located on the lower side of the liquid crystal display device 108 is used to shift the set value down by one in order to correct the above-mentioned time and date.
It is also used as a switch for teaching each lap to the CPU 1 when measuring the lap. In addition, the button switch 11 located above the liquid crystal display device 108.
Reference numeral 7 is used to give an instruction to start / stop the operation as the health management apparatus. Further, this button switch is used to advance the set value by one in the above-mentioned time and date correction mode, and is further used to instruct start / stop of various elapsed time measurements.

A button type battery 1 built in the watch case 107 is prepared as a power source for this apparatus.
18, the cable 101 shown in FIG.
Power is supplied to the sensor unit 102 from the sensor unit 102, and the detection result of the sensor unit 102 is sent to the control unit 109.

Further, in the present apparatus, it is necessary to increase the size of the apparatus main body 100 as the functions of the apparatus are increased. However, due to the restriction that the device body 100 is worn on the wrist, the device body 100 cannot be expanded in the 6 o'clock direction and 12 o'clock direction of the wristwatch. Therefore, in this aspect, the length dimensions in the 3 o'clock direction and 9 o'clock direction of the wristwatch are 6 o'clock and 12 o'clock.
A horizontally long watch case 107 longer than the length in the time direction is used.

Further, in this embodiment, the wristband 103 is connected to the watch case 107 at a position biased toward the 3 o'clock side. Furthermore, when viewed from the wristband 103,
Although the watch has a large overhang 119 in the 9 o'clock direction, such a large overhang does not exist in the 3 o'clock direction of the watch. Therefore, instead of using the horizontally long watch case 107, the user can bend the wrist, and the back of the hand does not hit the watch case 107 even when the user falls.

Inside the watch case 107, a flat piezoelectric element 120 used as a buzzer is arranged in the 9 o'clock direction with respect to the battery 118. Here, the battery 11
8 is heavier than the piezoelectric element 120, and the position of the center of gravity of the apparatus main body 100 is biased in the 3 o'clock direction. However,
Since the wristband 103 is connected to the side where the center of gravity is biased, the device body 100 can be worn on the arm in a stable state. Further, the battery 118 and the piezoelectric element 1
Since 20 and 20 are arranged in the surface direction, the device main body 100 can be made thin, and the user can easily replace the battery 118 by providing the battery cover on the back surface of the wristwatch.

It should be noted that the control unit 109 in FIG. 4 corresponds to the CPU 1 and the ROM in FIG. 1 in correspondence with FIG. 1 and FIGS.
2, RAM 3, sensor interface 6, display control circuit 8, and clock circuit 9. Further, the sensor unit 102 of FIG. 3 corresponds to the pulse wave sensor 4 and the acceleration sensor 5 of FIG. 1, and the liquid crystal display device 108 of FIGS. 3 to 4 corresponds to the display device 7 of FIG.

In this embodiment, the pulse wave is measured at the base of the user's finger. However, the measurement site of the pulse wave is not limited to this, and for example, the pulse wave may be measured at the radial artery part or its peripheral part. Further, as a partial modification of this aspect, as shown in FIG. 5, the sensor unit 102 and the sensor fixing band 104 are attached to the fingertip portion to measure the fingertip volume pulse wave. Embodiments are possible.

Next, as a second mode, a mode in which it is combined with an accessory such as a necklace as shown in FIG. 6 can be considered. In this figure, the same parts as those shown in FIGS. 3 to 5 are designated by the same reference numerals, and the description thereof will be omitted. In this figure, 31 is a sensor pad, for example, a sponge-like cushioning material. In the sensor pad 31, the pulse wave sensor 4 / acceleration sensor 5 of FIG. 1 is attached. Thus, by putting the necklace around the neck, the pulse wave can be measured by contacting the skin on the back side of the neck.

Further, the case 3 having a brooch-like shape
2, the CPU 1, the ROM 2, the RAM 3, the sensor interface 6, the display control circuit 8, and the clock circuit 9 of FIG. 1 are incorporated, and the cable 101 is a chain 3
It is embedded in 3. As described above, in this embodiment, the pulse wave at the base of the neck is measured. Further, since the clock function is not particularly required in this mode, the display device 7 may be configured only with the dot display area 108-D capable of performing graphic display.

Next, as a third mode, it may be considered to combine with glasses as shown in FIG. In this figure,
The same parts as those shown in FIGS. 3 to 6 are designated by the same reference numerals, and the description thereof will be omitted. As shown in FIG. 7, the main body of the device is attached to the vine 41 of the spectacle frame, and the main body is further divided into a case 42a and a case 42b, which are connected to each other via a lead wire embedded in the vine 41. ing. This lead wire is vine 4
You may make it crawl along 1.

A liquid crystal panel 44 is attached to the entire side surface of the case 42a on the lens 43 side. Further, a mirror 45 is fixed to one end of the side surface at a predetermined angle. In addition, a drive circuit for the liquid crystal panel 44 including a light source (not shown) is incorporated in the case 42a. Then, the light emitted from this light source is reflected by the mirror 45 through the liquid crystal panel 44 and projected onto the lens 43 of the spectacles. Therefore, in this case, it can be said that the lens 43 corresponds to the display device 7 in FIG.

The case 42b has a CPU of FIG.
1, ROM 2, RAM 3, sensor interface 6,
A display control circuit 8 and a clock circuit 9 are incorporated. The pulse wave sensor 4 is built in the pads 46, 46, and the earlobe is sandwiched between these pads to be fixed to the ear. Note that the acceleration sensor 5 is not shown in this embodiment. Further, in this embodiment, the pulse wave in the earlobe is measured.

Next, the operation of the health condition management apparatus having the above configuration will be described. First, before the exercise starts, the user
Button switch 117 to enable the function of this device
Press. Then, the pulse wave waveform and the acceleration value are sent from the pulse wave sensor 4 and the acceleration sensor 5, respectively, to the sensor interface 6 and converted into a digital signal. In parallel with this, the CPU 1 sends the read pulse wave waveform to the display control circuit 8 to display the pulse wave waveform on the display device 7. As a result, the user can visually observe the ever-changing waveform of the pulse wave on the dot display area 108-D of the liquid crystal display device 108 of FIG. 4, for example.

Subsequently, the CPU 1 causes the button switch 11
The resting pulse rate should be measured only once after pressing 7 and before the user starts exercise. Where C
The PU 1 determines whether or not the user is exercising (in other words, whether or not the user is in a resting state), and the movement of the pulse wave sensor 4 associated with the body movement of the user detects the pulse wave. Judge based on whether or not it has reached the level of adverse effects. That is, if the output value of the acceleration sensor 5 exceeds a predetermined value (0.1 G in one example), the CPU 1 is in a state in which the user is exercising (that is, not resting). to decide. In such a state, the detection of the pulse wave cannot be correctly performed, so that the CPU 1 causes the display device 7 to display a message for calling the user's attention so as not to move the body.

When the output value of the acceleration sensor 5 falls below a predetermined value, the CPU 1 determines that the user is not exercising (that is, resting state), and the pulse wave from the sensor interface 6 is determined. After reading the waveform of No. 3 for a predetermined time and storing it in RAM 3, the pulse wave waveform taken in during this period is divided into wavelength units and the number of wavelengths is counted,
This is converted per minute to calculate the pulse rate. Then, the calculated pulse rate is stored in the RAM 3 as the resting pulse rate.

Next, the CPU 1 reads one wavelength from the pulse wave waveform stored in the RAM 3. Next, the time differential of this waveform is taken twice to obtain the acceleration pulse wave waveform as shown in FIG. Then, the CPU 1 obtains the inflection point of the waveform of the acceleration pulse wave to find the peak a, valley b, peak c,
The valley d is determined, and the amplitude value at each inflection point is obtained.
Note that these inflection points can be obtained by a general method such as taking the time derivative of the acceleration pulse wave. Further, the waveform of the calculated acceleration pulse wave or the waveform of the velocity pulse wave obtained in the process of obtaining the acceleration pulse wave may be graphically displayed on the display device 7.

Next, the CPU 1 calculates values obtained by normalizing the amplitude values of the valley b, peak c, and valley d by the amplitude value of the peak a, that is, the amplitude ratios b / a, c / a, d / a. The calculation result is stored in the RAM 3. Of these amplitude ratios, the amplitude ratio d / a is most useful as an index representing the state of blood circulation. Therefore, in the following description of the present embodiment, in principle, only the amplitude ratio d / a will be used.
As will be described later, it is desirable to use the amplitude ratio d / a and the amplitude ratio c / a more strictly, but in the following, the simplest method is to make a determination using only the amplitude ratio d / a. And

Next, the CPU 1 instructs the user how much exercise should be performed. So first of all, CPU1
Based on the amplitude ratio d / a obtained as described above and the table shown in FIG. 2B, it is determined which of the patterns 1 to 3 the acceleration pulse wave waveform before exercise belongs, and the type of the pattern is determined. The pattern of the acceleration pulse wave waveform before exercise is stored in the RAM 3 and the type of the pattern is displayed on the display device 7. However, even if only the type of pattern is announced, it is difficult for the user to understand. So, for example, if it is decided to be a pattern,
An auxiliary message such as "Health is starting to become insufficient" is displayed on the display device 7. Next, the target value of exercise intensity, the upper limit value, the lower limit value, and the target value of exercise time corresponding to the obtained pulse wave pattern are read from the ROM 2 and stored in the RAM 3, and these values are displayed on the display device 7. It is displayed and the target of exercise is presented to the user.

Next, when the user starts exercising, the output value of the acceleration sensor 5 gradually increases as the body moves violently. When the output value of the acceleration sensor 5 exceeds the above-mentioned predetermined value from a certain point in time, the CPU 1
Recognizes the start of exercise by the user. Then, the CPU 1
The time is read from the clock circuit 9 and stored in the RAM 3 as the time when the exercise starts, and the clock circuit 9 is set so that an interrupt occurs when the target exercise time elapses. Further, the CPU 1 initializes a storage area provided on the RAM 3 to “0” in order to calculate the total amount of exercise during exercise.

While the user is exercising, CP
U1 measures the pulse rate and the amount of exercise of the user and gives instructions for exercise. Therefore, the CPU 1 first reads the pulse wave waveform from the sensor interface 6 at a predetermined time interval to calculate the pulse rate of the user. Then, when this pulse rate is converted into display information and sent to the display control circuit 8, the pulse rate is displayed on the display device 7.

Further, the CPU 1 calculates the amount of exercise,
Here, the exercise amount is displayed in calories. Since the calorie is approximately calculated by "the product of pulse rate and exercise time", the CPU 1 multiplies the pulse rate obtained above by the elapsed time from the immediately preceding pulse rate measurement to the current pulse rate measurement. To calculate the momentum. When calculating the amount of exercise, it is usual that the immediately preceding pulse rate and the current pulse rate are different, and thus the average of the immediately preceding pulse rate and the current pulse rate may be taken. Further, the CPU 1 obtains the total exercise amount from the start of exercise by adding the exercise amount of this time to the total exercise amount of the previous time. Then, the total exercise amount from the start of exercise and the exercise amount from the immediately preceding pulse rate measurement to the current pulse rate measurement are stored in the RAM 3 and displayed on the display device 7.

Since the amount of exercise can be obtained by the "product of exercise intensity and exercise time", the amount of exercise obtained by these products may be displayed instead of the calories described above. That is, since the measured pulse rate and exercise intensity satisfy the following well-known Carbone's equation, exercise intensity is calculated from the resting pulse rate and the pulse rate measured during exercise, which are stored in the RAM 3 in advance. Can be calculated, and the amount of exercise can be calculated from this. Measured pulse rate = (resting pulse rate) + {(220-age) -resting pulse rate} * exercise intensity ... (1) When the "exercise intensity" in this formula is about 80%, exercise is fairly tight. However, it can be said that the exercise is a bit hard even if it is about 50%. As for "age" in this equation, the age specified by the user by the input means (not shown) is stored in the RAM 3 in advance.

On the other hand, the CPU 1 checks whether or not the exercise intensity calculated from the measured pulse rate by the equation (1) has deviated from the range determined by the upper limit value and the lower limit value of the exercise intensity. Then, if it is above the upper limit value, an instruction is given to make the exercise a little lighter, while if it is below the lower limit value, an instruction is made to increase the exercise intensity a little more. As described above, by displaying the pulse rate and the amount of exercise on the display device 7, it is possible for the user himself to adjust the exercise, and it is checked whether the exercise is performed with an appropriate exercise intensity, and it is excessively strong. The exercise is monitored so that the exercise intensity is moderate without exercise or ineffective exercise.

When the target exercise time elapses and the clock circuit 9 interrupts, the CPU 1 instructs the user to end the exercise. Then, the user immediately stops exercising or stops exercising at a good interval, so that the output value of the acceleration sensor 5 gradually decreases. On the other hand, since the CPU 1 monitors the output value of the acceleration sensor 5, the CPU 1 detects again that the output value has become equal to or less than the above-described predetermined value, and recognizes that the user has actually interrupted the exercise. Next, the CPU 1 calculates the amplitude ratio d / a according to the same procedure as before the start of exercise, and
The current time is read from the clock circuit 9 to be the time of the end of exercise, and these values are stored in the RAM 3. Furthermore, C
The PU 1 calculates the net exercise time from the exercise start time and the exercise end time, and stores it in the RAM 3 as well.

Next, the CPU 1 causes the amplitude ratio d /
a, the amplitude ratio d / a after exercise, the total amount of exercise during exercise, and the net exercise time are displayed on the display device 7 according to the operation of the button switch by the user. Further, the CPU 1 obtains the target value of the exercise amount from the target value of the exercise intensity and the target value of the exercise time, and checks whether or not the actually measured total exercise amount is within a predetermined range centered on the target value. If the amount of exercise is not appropriate, the user is notified of this together with the target value of the amount of exercise, and the user is informed that the exercise as instructed is not being performed. Further, the CPU 1 also performs the same processing regarding the exercise time, and when the target value and the actual measurement value are significantly different from each other, the CPU 1 notifies the user of the fact and calls the user's attention.

Next, the CPU 1 determines which of the patterns shown in FIG. 2B the amplitude ratio d / a measured after the exercise belongs to in the same manner as before the exercise, and after the exercise. The type of pattern is displayed on the display device 7. Furthermore, as a result of comparing the pattern before exercise and the pattern after exercise, if the pattern is changing to the side and the condition is improved, "health condition is improving."
A message such as is displayed on the display device 7. On the other hand, if the pattern has changed to the side and the condition has deteriorated, it is possible that further exercise is not preferable, so stop the exercise and seek medical advice if necessary. Warn people.

In the absence of such a warning, for example, if the user is performing interval training and continues to exercise after that, the pattern obtained after exercise (ie, amplitude ratio d / a ) Is the pattern (amplitude ratio d
/ A). Then, a new target value is set from this pattern (amplitude ratio d / a), and exercise guidance is continued. After that, if the user presses the button switch 117 again when all necessary exercises have been completed,
The CPU 1 judges that the exercise is finished, and thereafter stops the exercise instruction.

On the other hand, if the user exercises after the next day, the button switch 117 is once pressed to stop the exercise instruction. Then, when exercising again at a later date, if the same procedure as above is followed, the pattern of the acceleration pulse wave is determined according to the health condition of the day, and the exercise according to the target value of the exercise corresponding to the pattern is determined. Is taught. As described above, the proper exercise can be instructed to shift the user's health condition to a good condition.

In the above embodiment, the measured pulse rate may be constantly displayed on the display device 7 before and after the exercise. Further, as a method of evaluating the exercise performed by the user, the following method can be considered.

FIG. 8 shows an example of the relationship between the amount of exercise performed by the user and the change rate of the amplitude ratio d / a before and after the exercise. As shown in this figure, when the momentum is small, the change rate of the amplitude ratio d / a is small,
Values of approximately less than + 5% are obtained (region "I" in FIG. 8). Next, when the amount of exercise is increased more than this, the rate of change of the amplitude ratio d / a gradually rises to exceed + 5%, and thereafter, the rate of change starts decreasing at a certain point. The rate of change of the amplitude ratio d / a becomes about + 5% again (region “II” in FIG. 8). Then, when the amount of exercise is further increased, the rate of change in the amplitude ratio d / a further decreases to less than + 5% and decreases to about -10% (region "III" in FIG. 8). When the momentum is further increased, the amplitude ratio d / a
The rate of change of (1) further decreases to below -10% (region "IV" in FIG. 8).

The CPU 1 has the above-mentioned momentum and amplitude ratio d /
Exercise is evaluated based on the relationship with the rate of change of a. Therefore, the CPU 1 obtains the difference between the amplitude ratio d / a after exercise and the amplitude ratio d / a before exercise, divides this difference by the amplitude ratio d / a before exercise, and the amplitude ratio d / a The rate of change of is calculated. When the obtained rate of change of the amplitude ratio d / a and the amount of exercise measured during exercise are plotted in the graph of FIG. 8, depending on which of the regions I to IV the plot is located. Evaluate.

That is, if it exists in the area of "I" in FIG. 8, it is evaluated that the exercise performed is too weak, and "I" in FIG.
If it exists in the area of "I", it is evaluated that the exercise was appropriate,
If it exists in the area of "III" of FIG. 8, it is evaluated that the exercise is a little strong, and if it exists in the area of "IV" of FIG. 8, it is evaluated that the exercise is too strong. Then, based on this evaluation result, for each of the regions I, II, III, and IV, "exercise is too light", "just good exercise", "exercise is a little strong", " A message such as "Exercise is too strong" is displayed on the display device 7 to notify the user of the evaluation result.

As described above, in the above, the amplitude ratio d
Although the case where only / a is used has been described, the amplitude ratio d /
By using the evaluation method with reference to a and the amplitude ratio c / a, it becomes possible to evaluate the motion with higher accuracy. That is, for example, the value of the amplitude ratio d / a is 20%
If so, it can be determined from FIG. 2B that the waveform of the acceleration pulse wave belongs to the pattern. On the other hand, if the value of the amplitude ratio d / a is 80%, it can be specified that the pattern belongs to any one of the patterns 1 to 3. Therefore, in order to narrow down which one of these patterns,
Further, the value of the amplitude ratio c / a is referred to. Now, the amplitude ratio c /
If the value of a is, for example, 30%, it can be determined from FIG. 2B that the waveform of the acceleration pulse wave belongs to the pattern.

There are various possible exercise target values other than the exercise intensity and exercise time described above, but calorie consumption can be considered as an example. The CPU 1 sets a target value of calories before the start of exercise. During the exercise, the calorie consumption is calculated at each time point when the pulse rate is measured, and the calorie consumption from the start of the exercise is integrated to RAM3. When the integrated value exceeds the set target value, the user is notified.

[Second Embodiment] In recent years, information such as power spectrum obtained from heart rate variability is used to diagnose various diseases such as heart disease, central nervous system disease, peripheral nerve disease, diabetes, hypertension, cerebrovascular disorder, and sudden death. , Is being used for treatment. Therefore, in the present embodiment, LF and H are calculated from the analysis of the fluctuation of the pulse wave corresponding to the fluctuation of the heartbeat fluctuation.
Each index of F and RR50 is obtained and used as an index showing the physical condition of the user. Therefore, first, the meaning of these indicators will be described.

In the electrocardiogram, the time interval between the R wave of a certain heartbeat and the R wave of the next heartbeat is called the RR interval, which is a numerical value that serves as an index of the autonomic nerve function in the human body. FIG.
FIG. 4 is a diagram showing heartbeats on an electrocardiogram and RR intervals obtained from the waveforms of these heartbeats. As can be seen from the figure, it is known from the analysis of the measurement results of the electrocardiogram that the RR interval changes with the passage of time.

On the other hand, the fluctuation of blood pressure measured in the radial artery and the like is defined as the fluctuation of the systolic blood pressure and the diastolic blood pressure for each beat, and corresponds to the fluctuation of the RR interval in the electrocardiogram. FIG. 10 shows the relationship between the electrocardiogram and blood pressure. As can be seen from this figure, the systolic and diastolic blood pressures for each beat are measured as the maximum value of the arterial pressure at each RR interval and the local minimum seen immediately before the maximum value.

By performing spectrum analysis of these heartbeat fluctuations or blood pressure fluctuations, it can be seen that these fluctuations are composed of waves of a plurality of frequencies. These waves are classified into the following three types of fluctuation components. -HF (High Frequency) component, which is a fluctuation that matches respiration-LF (Low Frequency), which fluctuates in a cycle of about 10 seconds
Component ・ Trend that fluctuates at a frequency lower than the measurement limit (Tren
d)

In order to obtain these components, first, for each of the measured pulse waves, the RR interval between adjacent pulse waves is obtained, and the discrete value of the obtained RR interval is calculated by an appropriate method (for example, Interpolation is performed by cubic spline interpolation (see FIG. 9). Then, by performing FFT (Fast Fourier Transform) processing on the interpolated curve and performing spectrum analysis, it becomes possible to extract the above-mentioned fluctuation component as a peak on the frequency axis. FIG. 11A shows a fluctuation waveform of the RR interval of the measured pulse wave and a waveform of each fluctuation component when the fluctuation waveform is decomposed into the above three frequency components. Further, FIG. 11B is a result of spectrum analysis on the fluctuation waveform of the RR interval shown in FIG.

As can be seen from this figure, peaks are seen at two frequencies near 0.07 Hz and 0.25 Hz. The former is the LF component and the latter is the HF component. Note that the trend component is below the measurement limit and cannot be read from the figure. The LF component is related to the activity of the sympathetic nerve, and the larger the amplitude of this component, the more it tends to be nervous. On the other hand, the HF component is related to the activity of the parasympathetic nervous system.

Since there are individual differences in the amplitude values of the LF component and the HF component, when this is taken into consideration, the LF component and H
“LF / HF”, which is the amplitude ratio of the F component, is useful for estimating the state of the human body. From the characteristics of the LF component and the HF component described above, it is derived that the larger the value of “LF / HF” is, the more tender the tension is, and the smaller the value of “LF / HF” is, the more the tendency is relaxed. On the other hand, the RR50 is defined as the number of times when the absolute value of the RR interval of two consecutive heartbeats varies by 50 milliseconds or more in the measurement of the pulse wave for a predetermined time (for example, 1 minute). It is known that the larger the value of RR50, the more sedative the human body is, and the smaller the value of RR50, the more excited.

By the way, there is a correlation between the physical condition of the user and these indices. By performing the strengthening training to reduce the function of the parasympathetic nerve and make the sympathetic nerve dominant state, it is possible to create a situation similar to the physical state of the patient suffering from the above-mentioned diseases. Then, observing the change in the above index during the recovery period of the body after stopping the reinforcement training, for example, the HF component shows a tendency to increase with the passage of time, while the value of “LF / HF” Tends to decrease day by day.

That is, as the body condition recovers, the value of the HF component or "LF / HF" increases or decreases from the value indicating the tense state to the value indicating the relaxed state. Therefore, the HF component and “LF / H
It is presumed that the quality of the human body can be judged by observing the increase and decrease of the values of each index including not only the “F” but also the LF component and the RR50. It is thought that it can be used.

Next, the health condition management apparatus according to the present embodiment will be explained. In this embodiment, one of the above four indexes is used instead of the amplitude ratio d / a in the first embodiment, and the device configuration is the same as in the first embodiment. Therefore, the operation of the apparatus will be described below focusing on the operation peculiar to this embodiment. In the above embodiment, the acceleration pulse wave waveform is classified into six patterns, but in the present embodiment, the values of these indices are divided into several grades according to the values, and A target value of exercise intensity, an upper limit value, a lower limit value, and a target value of exercise time are set in the ROM 2 in advance for each grade.

Before the exercise, the user pushes the button switch 11
When the user presses 7, the CPU 1 checks the output value of the acceleration sensor 5, confirms whether the user is in a resting state, then measures the pulse rate at rest only once, and Store in RAM3. Next, the CPU 1 takes in the pulse wave waveform and calculates the above four indexes based on the pulse wave waveform. Therefore, this processing will be described in detail below.

First, the CPU 1 takes the time derivative of the pulse wave waveform in order to extract the maximum point from the pulse wave waveform,
Find the time when the time derivative is zero and find all the times when the waveform has a pole. Next, it is determined whether the extreme point at each time is a local maximum or a local minimum based on the slope (that is, the time differential value) of the waveform near the extreme point. For example, for a certain pole, a moving average of the slope of the waveform is calculated for a predetermined time before the pole. It can be seen that if this moving average is positive, the extreme point is maximum, and if it is negative, it is minimal.

Next, the CPU 1 obtains, for each of the extracted maximum points, the minimum point existing immediately before the maximum point. Then, the amplitude of the pulse wave at the maximum point and the minimum point is stored in the RAM 3
Then, the amplitude difference between the two is obtained, and if this difference is equal to or greater than a predetermined value, the time at the maximum point is set as the peak of the pulse wave. Then, after performing the peak detection processing on all the captured pulse wave waveforms, the time interval between them (corresponding to the RR interval in the heartbeat) is calculated based on the times of two adjacent peaks.

Since the values of the RR intervals obtained above are discrete on the time axis, the adjacent RR intervals are interpolated by an appropriate interpolation method to obtain a curve as shown in FIG. 11 (a). . Next, FFT processing is performed on the interpolated curve to obtain a spectrum as shown in FIG. Therefore, the same maximum discrimination processing as that carried out for the waveform of the pulse wave is applied to obtain the maximum value in this spectrum and the frequency corresponding to the maximum value, and obtain the maximum value obtained in the low frequency region. LF component, maximum value obtained at high frequency is H
As the F component, the amplitude of each component is obtained, and the amplitude ratio “LF
/ HF "is calculated. Further, the CPU 1 sequentially obtains the time difference between the adjacent RR intervals based on the RR intervals obtained above, and checks whether or not the time difference exceeds 50 milliseconds for each of them. Then, the number corresponding to this is counted and defined as RR50.

Next, the CPU 1 gives the user instructions about the exercise to be performed. So first, C
PU1 determines to which grade the value of the index obtained as described above belongs. Then, after the determined grade and index value are stored in the RAM 3 and displayed on the display device 7, the target value of exercise intensity, the upper limit value, the lower limit value, and the target value of exercise time corresponding to the grade are RO.
The target value for exercise is read out from M2, stored in RAM3, and displayed on the display device 7 to present it to the user.

Next, when the user starts exercising, the CPU 1 that recognizes the exercising stores the time at the beginning of exercising in the RAM 3 and sets the target exercising time in the clock circuit 9. During exercise, the pulse rate and the amount of exercise are measured and the exercise is instructed. That is, the CPU 1 calculates the exercise amount and the pulse rate from the previous pulse rate measurement to the current pulse rate measurement, obtains the total exercise amount from the start of exercise, stores these values in the RAM 3, and displays them on the display device 7. Display it. Further, the CPU 1 checks whether the exercise intensity calculated from the equation (1) is within the range determined by the upper limit value and the lower limit value, and gives an instruction to the user regarding exercise intensity as appropriate.

When the target exercise time elapses and an interrupt is input from the clock circuit 9, the CPU 1 instructs the user to end the exercise, monitors the output of the acceleration sensor 5, and the user actually exercises. Wait to stop. Then, CP
U1 calculates each index in the same way as before the start of exercise, and
The time of the end of exercise is read from the clock circuit 9, the net exercise time is calculated, and all of these values are stored in the RAM 3 and displayed on the display device 7. Also, the CPU 1
Check whether the total exercise amount and exercise time for the exercise you just performed are within the predetermined range from each target value,
If the user is not exercising as instructed, inform the user of this fact.

Next, the CPU 1 performs the same operation as before the exercise is performed.
It is determined which grade the index value after exercise belongs to, and the obtained grade and index value are displayed on the display device 7. Furthermore, by comparing the index values before and after exercise, if the state is improved, a message to that effect is displayed, while if the state has deteriorated,
Warn to stop exercise and seek medical advice.

Regarding the criterion for judging whether the condition has improved or deteriorated, LF or "LF / HF" is given.
In the case of, if the value decreases due to exercise, it is considered to be improved, and if it increases, it is considered to be deteriorated. On the other hand, in the case of HF or RR50, it is considered that the decrease is aggravated and the increase is considered improved.

If the user continues to exercise after that, the grade obtained after the exercise is set as the grade before the exercise is performed, and a new target value is obtained from the grade. Continue exercise guidance. In the above description, any one of the four indicators
However, some of these indicators may be comprehensively taken into consideration.

[Third Embodiment] This embodiment is a modification of the health management apparatus described in the first embodiment. That is, in the first embodiment, whether the user is in a resting state or not is determined by the device (more specifically, the CPU).
1) automatically discriminates based on the measurement result of the acceleration sensor 5. On the other hand, in this embodiment, the user himself / herself determines whether or not the user is in a resting state, and instructs the apparatus to that effect.

Further, as described above, the operation modes in the first embodiment are roughly divided into two kinds of modes. In other words, there are two modes: a mode that operates as a health management device and a mode that is used as an ordinary clock such as setting the time and date and using it as a stopwatch
There are two modes. On the other hand, the operation mode in this embodiment has three types of modes.

The first mode is a mode that does not function as a health condition management device, and functions as a normal timepiece when the device is incorporated in a wristwatch. The remaining two modes are modes that function as a health condition management device. That is, the second mode is a pulse wave measurement mode, which is a mode for measuring and analyzing a pulse wave before or after exercise of the user on the assumption that the user is in a resting state. Is. Furthermore, the third mode is a pulse measurement mode, which is a mode for measuring the pulse rate while the user is exercising and instructing the exercise.

Then, the switching between these three modes is manually performed by the user using the button switch 117 described above. Here, the button switch 117 in the first embodiment is a switch for starting / stopping the operation as the health condition management device. On the other hand, the button switch 117 in this embodiment functions as a button switch for cyclically switching the above-mentioned three types of modes. That is, each time the button switch 117 is pressed, the mode cyclically changes in the order of first → second → third → first. It should be noted that the mode is not settled while the mode is being switched, and the user may repeatedly press the button switch 117 until the desired mode is reached. Further, as is clear from the above description, since the user himself / herself determines the resting state using the acceleration sensor 5 according to the first embodiment, the acceleration is essentially performed in the present embodiment. The sensor 5 is unnecessary.

Next, the operation of the health management apparatus according to this embodiment will be outlined. First, before starting the exercise, the user operates the button switch 117, taking care not to move the pulse wave sensor 4, and sets the apparatus to the pulse wave measurement mode. As a result, the CPU 1 causes the sensor interface 6
The pulse wave waveform is read for a predetermined time, the resting pulse rate is calculated from the read pulse wave waveform, and stored in the RAM 3.

Next, the CPU 1 reads the pulse wave waveform for one waveform, obtains the acceleration pulse wave waveform, peak a, valley b,
The peak c and the valley d are determined to calculate the amplitude ratio d / a, the pattern of the acceleration pulse wave waveform is determined from the amplitude ratio d / a, and these values are stored in the RAM 3. Next, the target value of the exercise corresponding to this pattern is read from the ROM 2 and stored in the RAM 3, and these values are displayed on the display device 7. At that time, a message indicating that the pulse wave measurement before exercise is completed is also displayed on the display device 7.

Then, the user who confirms the message operates the button switch 117 to set the apparatus to the pulse measurement mode. With this, the CPU 1 reads the exercise start time from the clock circuit 9 and stores it in the RAM 3. At the same time, the exercise time is set in the clock circuit 9. On the other hand, when the user who operates the button switch 117 starts the exercise, the CPU 1 measures the pulse rate and the exercise amount during the exercise of the user, and gives the instruction of the exercise as in the first embodiment.

After that, when an interrupt is input from the clock circuit 9, the CPU 1 instructs the user to stop the exercise.
When the user stops the exercise according to this instruction, the user operates the button switch 117 to switch the apparatus to the pulse wave measuring mode again. Thereby, the CPU 1 reads the exercise end time, calculates the net exercise time, and stores them in the RAM 3. Further, the CPU 1 recognizes that the current pulse wave measurement mode is for measuring the pulse wave after the exercise, and calculates the amplitude ratio d / a from the captured pulse wave waveform according to the same procedure as before the exercise is started. , The acceleration pulse wave pattern is determined, and these values are stored in the RAM 3.

Next, the CPU 1 causes the amplitude ratio d /
a, the amplitude ratio d / a after the exercise, and the total exercise amount during the exercise are displayed on the display device 7, and it is checked whether the exercise amount and the exercise time are appropriate, and the user is warned if necessary. Further, the change state of the pattern of the accelerated pulse wave waveform before and after the exercise is examined, and the user is appropriately instructed according to the degree of improvement or deterioration of the state. After this, the same as the above, after the user prepares breathing so that the resting pulse rate can be measured, the above-described operation is repeated from the operation of pulse wave measurement before the start of exercise.

There is a possibility that the user's body may be inadvertently moved and interfere with the measurement in the pulse wave measurement mode. Therefore, in consideration of such a case, the acceleration sensor 5 may be used auxiliary. That is, the CPU 1 periodically reads the output of the acceleration sensor 5 during the measurement of the pulse wave before and after the exercise, and if it detects that the body of the user is moving, the CPU 1 gives a warning on the display device 7. It suffices to display a message or issue a sound warning using an alarm built into the device.

Further, the pulse wave measurement before exercise and the pulse wave measurement after exercise are provided as separate modes so that the user can select one of these two modes according to before and after exercise. May be. Furthermore, although the present embodiment has been described as being applied to the first embodiment, the amplitude ratio d / a
If is replaced with LF, HF, "LF / HF", RR50, it is naturally applicable to the second embodiment.

[Fourth Embodiment] Next, a health condition management apparatus having the above-described configuration is applied to a rehabilitation (hereinafter referred to as "rehabilitation") instruction by using an amplitude ratio d / a obtained from an acceleration pulse wave. The case will be described. Usually, rehabilitation consists of several stages, and as treatment progresses, it moves to a stage where more intense exercise is imposed,
Along with that, the condition of the patient is improving. In the present embodiment, such exercise guidance for the rehabilitation target person is automatically performed without the attendance of an attendant.

In the present embodiment, the ROM 2 shown in FIG. 1 has a "standard" amplitude ratio d / a or the like for each rehabilitation stage.
The target value, the upper limit value, the lower limit value, and the target value of the exercise time, which are considered to be suitable for achieving the physical condition having the amplitude ratio corresponding to the value of the amplitude ratio, are stored. Is stored.

First, preparations are made to start rehabilitation. That is, the CPU 1 takes in the pulse wave of the patient, obtains the acceleration pulse wave, obtains each amplitude ratio, and calculates the pulse rate at rest. As described below, these values represent the condition of the rehabilitation target person on the day of performing the rehabilitation. Therefore, the "standard" target value of the amplitude ratio stored in the ROM2 is corrected by the measured amplitude ratio and the value of the pulse rate at rest, and the target amplitude ratio that matches the physical condition of the patient at the start of rehabilitation. And calculate this as RA
Store in M3. Then, the target value of the exercise intensity, the upper limit value, the lower limit value and the target value of the exercise time corresponding to the target amplitude ratio are read from the ROM 2 and notified to the patient together with the target amplitude ratio. When correcting the standard amplitude ratio, both the measured amplitude ratio and the pulse rate may be used, or only one of the information may be used.

Next, the CPU 1 causes the display device 7 to display a message prompting the start of rehabilitation. As a result, the patient who sees the message starts the first stage exercise. Then, the CPU 1 measures the pulse rate while the patient is exercising, calculates the exercise intensity from the measured pulse rate, checks whether it is within the range of the upper limit value and the lower limit value described above, and determines the appropriate exercise intensity. Instruct the patient as appropriate to maintain On the other hand, on the other hand, the amount of exercise is calculated and accumulated at a predetermined time interval.

Then, after the above target exercise time has elapsed,
When the CPU 1 instructs the patient to end the exercise and the patient once stops the exercise, the CPU 1 captures the pulse wave again to calculate the amplitude ratio after the exercise, and whether or not the target value of the amplitude ratio at this stage is reached. Find out. If the target value is not yet reached, the patient is instructed to continue the exercise until the measured value reaches the target value.

On the other hand, when the measurement result reaches the target value of the exercise of the present stage, the CPU 1 causes the display device 7 to display a message prompting the user to shift to the exercise of the next stage, and a new one in the second stage. After reading the standard target value of the amplitude ratio from the ROM 2 and performing the same correction as above, a new target value, upper limit value, lower limit value and exercise time of the exercise intensity corresponding to the corrected target value of the amplitude ratio. Display the target value of. As a result, the patient can finish the first stage exercise and shift to the second stage exercise. In this way, the patient can complete the rehabilitation menu step by step.

Then, when all the steps are completed, C
When the PU 1 causes the display device 7 to display a message indicating that rehabilitation has been completed, the patient ends the rehabilitation. In the present embodiment, the amplitude ratio d / a is used, but it is naturally possible to replace it with LF, HF, “LF / HF”, and RR50.

[Fifth Embodiment] Next, a case where the user applies the health condition management apparatus having the above-mentioned configuration to his / her own health management will be described. The CPU 1 captures a pulse wave from the sensor interface 6 every day at a determined measurement time. Here, in the present embodiment, the measurement is performed every two hours. Then, the amplitude ratio d / a or the like is calculated by the same procedure as in the first embodiment,
These calculation results are stored in the RAM 3 together with the time read from the clock circuit 9. Note that the amplitude ratio cannot be calculated when the user is exercising at the measurement time, but in that case, the output of the acceleration sensor 5 is monitored and the amplitude ratio is calculated after the end of the exercise. To do so.

On the other hand, each measurement time (for example, 2:00 pm)
Then, the CPU 1 respectively reads out the amplitude ratios obtained at the same time (that is, 2:00 pm) in the past predetermined period (one week in this embodiment) from the RAM 3, and determines these amplitude ratios and the present time (that is, 2:00 pm). The moving average is calculated from the amplitude ratio of). Then, this moving average is stored in the RAM 3 together with the current amplitude ratio and the measurement time.

Next, the moving average value calculated at the same time on the previous day (that is, 2:00 pm on the previous day) is read from the RAM 3, and this moving average value is compared with the current amplitude ratio. Then, it is checked whether or not the difference between the two exceeds a certain value, and if it exceeds the certain value, a warning message is displayed on the display device 7 so that the current state deviates from the average state of the past week. And can give a warning to the user.

In the above description, the amplitude ratio obtained from the pulse wave is used as it is. However, if the acceleration sensor 5 is regarded as an activity monitor, the correlation between the body movement of the user and the acceleration pulse wave can be obtained.
Therefore, in calculating the amplitude ratio, the measured value of the amplitude ratio may be corrected based on the correlation information and the output value of the acceleration sensor 5.

Further, the transition of the amplitude ratio during the past predetermined period (one week, one month, one year, etc.) stored in the RAM 3 is displayed in a graph on the display device 7 to notify the user of the change in blood circulation state. It is also possible to do so. Further, although the amplitude ratio d / a is used in the above description, LF, HF,
Of course, it is also possible to use "LF / HF", RR50.

[Application] In the above embodiment, various notifications to the user are displayed as messages, but notifications may be made by sound. For example, if this device is combined with a wristwatch, the existing alarm function built into the wristwatch can be used. Also,
Also in the case of other portable devices, if a sound source using a piezoelectric element or a speaker is provided, not only an alarm sound but also a notification by a voice message can be realized. If the notification is given by such a sound, even a visually impaired person can use the device without any trouble. In addition, since it is not necessary for the user to see the displayed message during the exercise, it can be said that it is preferable for a healthy person to be bothersome.

It is also possible to devise a method for the user to understand the difference by changing the type of music to be played or the pitch of the sound according to the evaluation result of exercise and the content of the instruction to the user. To be Furthermore, the message and the sound may be used together for the notification. For the hearing impaired, tactile sense may be used instead of the message or sound. For example, it is conceivable that a diaphragm is attached to the back surface of the wristwatch to vibrate the diaphragm, or that the entire wristwatch is vibrated to notify the user by vibration. Furthermore, by changing the intensity of vibration and the change in vibration time, it is possible to make announcements in various forms like messages and voices.

Further, in the above embodiment, the acceleration sensor 5
Although the pulse wave sensor 4 is arranged close to the pulse wave sensor 4, the acceleration sensor 5 may be actually attached to any part of the human body. In the above embodiment, the acceleration pulse wave is used. However, the acceleration pulse wave is the most well known,
It's just because it's easy to understand. Therefore, it goes without saying that the present invention can be applied to any of the original waveform of the pulse wave, the first-order differential waveform, and the differential waveform higher than the acceleration pulse wave.

Here, as an example, a case where the original waveform of the pulse wave is used will be briefly described. FIG. 12 shows a typical original waveform of a pulse wave. In this figure, (a) is what is called a so-called flat vein, and is a three-peak wave characterized by having three peaks. Here, P1 to P5 in the figure are inflection points (peaks) of the pulse wave. On the other hand, FIG. 12 (b) shows a pulse wave called a so-called slip vein, which is a bimodal wave characterized by having two peaks. On the other hand, FIG. 12C shows a pulse wave called a chord vein.

When the relationship between each of these pulse waves and the exercise performed by the user is examined, generally, before exercise, as shown in FIG.
The flat vein shown in (a) is seen. Further, even when the exercise is performed, if the exercise is too light, a flat vein is observed even after the exercise. On the other hand, if the exercise performed is appropriate, the slip vein shown in FIG. 12B will be observed after the exercise. On the other hand, if the exercise performed is excessive, after the exercise shown in FIG.
The state of the chord vein shown in is exhibited.

As described above, when the original waveform of the pulse wave is used, the user can determine whether the waveform of the pulse wave after exercise is classified into a flat vein, a smooth vein, or a chord vein. It can be seen that the exercise done can be evaluated. Here, in order to extract the inflection points P1 to P5 from the measured pulse wave and capture the characteristics of the pulse wave, for example, a patent application by the inventor of the present invention (Japanese Patent Application No. 5-197569, stress evaluation). The device and the physiological age evaluation device) can be used. Therefore, the outline will be described below.

According to this method, with respect to the waveform of each pulse of the pulse wave, the following information is collected to extract the characteristics of the pulse wave. That is, as shown in FIG. 13, 1) pulse pressures y _{1 to} y ₅ , at inflection points P1 to P5 that sequentially appear in each pulse of the pulse wave, and 2) the pulse wave start time t _{0 at} which the pulse wave rises as a reference. in case of, each of the elapsed time T _6, 3) inflection point P1~P5 to pulse wave of the elapsed time T ₁ through T ₅ and the next beat to each inflection point P1~P5 appears rises Whether it is maximum or minimum. In the ROM 2 of FIG. 1, the elapsed times T _{1 to} T ₆ , the pulse pressures y _{1 to} y ₅ , which are the characteristics of the pulse wave for each of the flat vein, the smooth vein, and the chord vein, the maximum / minimum of each inflection point. Other information is stored in advance.

In addition, the operation of the health management apparatus in this case is roughly as follows. First, CPU1
Extracts only the frequency component in the lower range than the predetermined cutoff frequency from the waveform of the captured pulse wave and stores the obtained waveform data in the RAM 3. Next, with respect to the pulse wave waveform including only the low frequency component, a process for obtaining the time derivative thereof is performed. Then, a moving average within a predetermined period is calculated with respect to the calculated time differential value, and the calculation result is stored in the RAM 3 as inclination information. This inclination information takes a positive value if the pulse pressure tends to increase, and takes a negative value if the pulse pressure tends to decrease.

Next, the CPU 1 checks the result of the above calculation, and when 0 is output as the time differential value, this is taken as the inflection point and the sampling time and pulse pressure (pulse pressure) of the waveform at this time point. Pressure (corresponding to y _{1 to} y ₅ ). Also,
By referring to the above inclination information, it is determined whether each inflection point is the maximum or the minimum. That is, if the inclination information obtained corresponding to a certain inflection point is positive, this inflection point is the maximum point, and if the inclination information is negative, this inflection point is the minimum point. Further, every time the inflection point is detected, the CPU 1 obtains a difference between the pulse pressure at the inflection point and the pulse pressure at the inflection point detected immediately before, and the obtained difference data is stored in the RAM 3 as stroke information. Store.

After performing the above processing for all the pulse waves within the measurement time, the CPU 1 performs processing for separating the pulse waves for each beat. First, the CPU 1 fetches the tilt information and stroke information corresponding to each inflection point from the RAM 3, and selects one having positive tilt information from the fetched stroke information. Then, a predetermined number of stroke information items having a large stroke information are selected from among these, and the one corresponding to the median value is further selected from among them to determine the rising portion of each pulse of each pulse. As a result, the start time of this rising can be obtained as the pulse wave start time t ₀ .

As described above, the inflection points P1 to P5,
Another maxima / minima for these inflection points, the pulse pressure y ₁ ~y ₅ at each inflection point is determined. Further, the elapsed times T _{1 to} T ₅ are calculated by obtaining the difference between the waveform sampling time at each inflection point and the pulse wave start time t ₀ . Further, the elapsed time T ₆ is obtained for each beat of the pulse wave by obtaining the time difference between the pulse wave start times t ₀ between the adjacent pulse waves.

Then, the elapsed time T _{1 to} T ₅ and the pulse pressure y _{1 to} y
_{5. For} each of the maximum / minimum at the inflection points P1 to P5, comparing the measured pulse wave with the predetermined pulse wave stored in the ROM2, the measured pulse wave is obtained. The most suitable pulse wave type can be selected from among flat veins, smooth veins, and chord veins, and the exercise performed by the user can be evaluated from the pulse wave types.

[0147]

As described above, the first to seventh aspects are as follows.
According to the described invention, the state of blood circulation is notified to the user based on the pulse wave measured by the user. It is possible to obtain the effect that the state of blood circulation can be known, and therefore, it can be useful for predicting diseases such as ischemic heart disease and cerebrovascular disorder.

According to the fourth aspect of the invention, since the amplitude value of the spectral component obtained from the spectral analysis of the fluctuation of the time intervals of the adjacent pulse waves is used as an index, the activity of the sympathetic nerve and the parasympathetic nerve can be improved. The effect that the health condition can be grasped and managed based on the displayed index is obtained.
Further, according to the invention of claim 5, since the amplitude ratio of the low-frequency and high-frequency spectrum components obtained from the spectrum analysis of the fluctuation of the time interval of the adjacent pulse waves is used as the index, the variation of the index due to individual difference is It can be eliminated, and an effect that objective judgment materials for managing the health condition can be provided is obtained.

According to the sixth aspect of the present invention, the number of fluctuations of the time intervals of the adjacent pulse waves exceeding the predetermined time is used as an index. Therefore, it is based on the index that well represents the excitement and sedation of the human body. The effect is that the health condition can be grasped and managed. Further, according to the invention of claim 8 or 9, since the pulse rate is notified to the user while the user is exercising, it is more desirable to appropriately adjust the amount of exercise even during the exercise. The effect is that training can be accumulated.

According to the ninth or eleventh aspect of the invention, the exercise is evaluated based on the change in the index before and after the exercise. Therefore, when performing the interval training or the like, many exercises are performed at each interval. The effect of being able to know whether it is too much, too little, or just right, and being able to perform effective training is obtained. Further, according to the inventions described in claims 2, 10 and 11, the pulse wave or the pulse rate is measured based on the instruction from the user. There is no need for a means for inspecting the presence or absence of body movement, and there is an effect that the structure of the device can be simplified.

According to the twelfth aspect of the present invention, the movement of the user is monitored during the measurement of the pulse wave, and a warning is issued when a movement exceeding a predetermined movement is detected. Therefore, when there is a problem in the measurement of the pulse wave, it is possible to notify the user of this and to prompt the re-measurement. Further, according to the invention of claim 13, when the calculated index reaches the target value set according to the stage of exercise, the user is notified to shift to the exercise of the next stage. Therefore, even if it is necessary to gradually perform exercise such as rehabilitation treatment, it is possible to obtain the effect that doctors and nurses can perform appropriate exercise without attending. .

According to the fourteenth aspect of the present invention, the moving average of the indexes in the past predetermined period is compared with the current index, and if the difference between them is a predetermined value or more, a warning is given to the user. Since it was done, it is possible to promptly notify the user that the health condition viewed from the state of blood circulation is worse than usual, and the user should promptly receive medical treatment from a doctor etc. The effect is that you can make an effort to manage your health.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a health condition management apparatus according to an embodiment of the present invention.

2A is a diagram showing various aspects of an acceleration pulse wave in a fingertip volume pulse wave, and FIG. 2B is an amplitude ratio d / a and an amplitude ratio c / a for each pattern of FIG. 2A. It is a figure showing the range of.

FIG. 3 is a diagram when the device is combined with a wristwatch.

FIG. 4 is a plan view showing the structure of the wristwatch in more detail when the device is combined with a wristwatch.

FIG. 5 is a diagram showing another mode in which the device is combined with a wristwatch.

FIG. 6 is a diagram when the device is combined with a necklace.

FIG. 7 is a diagram when the same apparatus is combined with eyeglasses.

FIG. 8 is a diagram showing the relationship between the amount of exercise performed by the user and the rate of change in the amplitude ratio d / a measured before and after the exercise.

FIG. 9 is a diagram showing a relationship between an electrocardiogram and an RR interval.

FIG. 10 is a diagram showing a relationship between an electrocardiogram and a pulse wave.

FIG. 11A is a diagram showing a relationship between RR interval fluctuation and frequency components constituting the fluctuation. Further, (b) is a diagram showing a result of a spectrum analysis of RR interval fluctuation.

FIG. 12 is a diagram showing an original waveform of a typical pulse wave,
(A) is a flat vein, (b) is a smooth vein, and (c) is a chord vein.

FIG. 13 is a diagram for explaining the characteristics of the pulse wave waveform for one beat of the pulse wave.

FIG. 14 is a diagram showing a waveform of a finger plethysmogram,
(A) is the measured original waveform, (b) is the velocity pulse wave, (c)
Is the acceleration pulse wave.

FIG. 15 is a diagram in which one waveform portion of an acceleration pulse wave in the fingertip volume pulse wave is extracted.

FIG. 16 is a block diagram showing a configuration of an acceleration sphygmograph according to a first conventional technique.

FIG. 17 is a diagram showing how the acceleration pulse wave waveform is divided when categorizing the measured acceleration pulse wave in the same technology.

FIG. 18 is a block diagram showing a configuration of an acceleration sphygmograph according to a second conventional technique.

[Explanation of symbols]

1 ... CPU, 3 ... RAM, 4 ... Pulse wave sensor, 5 ... Acceleration sensor, 6 ... Sensor interface, 7 ... Display device,
8 ... Display control circuit

Claims (14)

[Claims] 1. A pulse wave measuring means for measuring a user's pulse wave, a body movement measuring means for measuring a body movement of the user, and a measurement result of the body movement measuring means being less than or equal to a predetermined value. A health condition management apparatus comprising: a calculating unit that obtains an index representing the blood circulation state of the user from the waveform of the pulse wave; and a notifying unit that notifies the user of the index. 2. A pulse wave measuring means for measuring a pulse wave of a user, a pulse wave measuring instruction detecting means for detecting a measuring instruction of the pulse wave by the user, and the pulse wave measuring instruction. In the meantime, a health condition management device comprising: a calculating unit that obtains an index representing the state of blood circulation of the user from the waveform of the pulse wave; and a notifying unit that notifies the user of the index. 3. The calculating means obtains an acceleration pulse wave of the pulse wave, selects two peaks and a plurality of valleys appearing in the acceleration pulse wave, and obtains an amplitude ratio thereof. The health condition management device according to claim 1, wherein the health condition management device is used as the index. 4. The calculation means uses the value obtained by dividing the amplitude value of the second valley appearing in the acceleration pulse wave by the amplitude value of the first peak as the index. Health condition management device. 5. The calculation means calculates time intervals between adjacent pulse waves, performs spectrum analysis on fluctuations in the time intervals, and uses an amplitude value of a spectrum component obtained by the analysis as the index. The health condition management apparatus according to claim 1 or 2, characterized in that. 6. The calculating means calculates time intervals between adjacent pulse waves, performs spectrum analysis on fluctuations in the time intervals, and analyzes the amplitude and the high frequency of the low-frequency spectrum component obtained by the analysis. The health condition management apparatus according to claim 1, wherein a ratio of amplitudes of spectral components is calculated and used as the index. 7. The calculation means calculates the time interval between adjacent pulse waves, and uses the number of continuous fluctuations of the time interval exceeding a predetermined time as the index. 2. The health condition management device described in 2. 8. A pulse measuring means for measuring the pulse rate of the user is provided, and when the measurement result of the body movement measuring means exceeds the predetermined value, the notifying means indicates the pulse rate of the user. The health condition management apparatus according to claim 1, wherein the measurement result is notified to the user. 9. An index when the measurement result of the body movement measuring means is equal to or less than the predetermined value, and the index when the measurement result of the body movement measuring means exceeds the predetermined value and is again equal to or less than the predetermined value. When an index is measured, the evaluation unit has an evaluation unit that evaluates the exercise performed by the user based on the difference between these indices, and the notification unit notifies the user of the evaluation result of the exercise. The health condition management apparatus according to claim 1, wherein: 10. A pulse measuring means for measuring the pulse rate of the user, and a pulse measuring instruction detecting means for detecting a measuring instruction of the pulse rate by the user, wherein the notifying means measures the pulse. While the instructions are given
The health condition management apparatus according to claim 2, wherein the measurement result of the pulse rate is notified to the user. 11. The index obtained at the time when the user gives the pulse wave measurement instruction before the start of exercise and at the time when the user gives the pulse wave measurement instruction after the end of exercise. It has an evaluation unit that takes in the obtained index and evaluates the exercise performed by the user based on the difference between these indices, and the notification unit notifies the user of the evaluation result of the exercise. The health condition management device according to claim 2, wherein 12. The body movement measuring means for measuring the body movement of the user, and the body movement detecting means for detecting that the measurement result of the body movement exceeds a predetermined value, the notifying means: The health condition management apparatus according to claim 2, wherein when the measurement result of the body motion exceeds a predetermined value while the pulse wave measurement instruction is issued, a warning is issued to the user. 13. The exercise performed by the user comprises a plurality of stages, and a storage unit that stores in advance the target value of the index to be achieved by the exercise in each stage, the user. Has a comparing means for comparing the index calculated by the calculating means with the target value corresponding to each exercise step when the exercise of each step is completed, and the result of the comparison is calculated by the calculating means. The health condition according to claim 1 or 2, wherein when the index reaches the target value, the notification means notifies the user to perform the next step of exercise. Management device. 14. The index obtained at a predetermined time,
A storage unit that stores a moving average of the index in the past predetermined period, and a past index obtained at the same time as the current time is read from the storage unit, and a moving average of the index and the current time index is calculated. And a storage unit that stores the current index together with the index, and a control unit that calculates a difference between the moving average of the index in the past predetermined period and the index at the current time and compares the index with a predetermined value. The health condition management device according to claim 1 or 2, wherein the notification means warns the user if is greater than or equal to a predetermined value.