JPS62197034A - Household pulse measuring apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a home pulse wave measuring device used in general households for health management.

2. Description of the Related Art Conventional pulse wave measuring devices have generally been constructed as a dedicated system by integrating a blood volume detection device, an arithmetic processing device, and a display and recording device.

In addition, measurement devices other than pulse waves include blood pressure, 9 body temperature.

For devices that only handle relatively simple numerical data such as pulse rate, some devices have been announced that can be connected to a general-purpose personal computer to store the data.

Problems to be Solved by the Invention With such a conventional configuration, pulse wave measuring devices inevitably become extremely expensive and large because they are dedicated systems for professionals. Handling was also complicated. In addition, in the case of measurement devices other than pulse waves that can be connected to a general-purpose personal computer, the measurement results are limited to those that can be obtained as simple numerical data such as blood pressure, body temperature, pulse, etc. There is no precedent for something that requires waveform analysis, and it is hard to say that the functions of personal computers have been fully utilized.

Means for Solving the Problems In order to solve this problem, the present invention provides a blood volume sensor that detects an increase or decrease in fingertip blood volume based on the transmittance of light, an amplifier, a gain adjuster, and an AD converter.

A signal conversion storage device having a built-in memory and having a signal conversion function of converting the output of the blood volume sensor into an input signal to a general-purpose personal computer and a function of storing the converted signal, and storing measurement results. It is designed so that it can be compared with a standard pulse wave waveform stored in memory in advance or with a previously stored pulse wave waveform.

Function: With this configuration, by replacing the arithmetic processing unit, display, and recording device that conventional pulse wave measuring devices have as a system with a general-purpose personal computer, the arithmetic processing method 2 analysis method 2 display of the pulse wave waveform can be performed. By allowing the user to freely select or create a method, etc., the method of use, which was previously fixed as a system, can be made extremely flexible. Furthermore, since only a blood volume sensor and a signal conversion storage device are required as a dedicated device, the price can be significantly reduced, and it can be easily obtained in ordinary households. Advanced medical information, which previously could only be obtained through specialists, can now be easily accessed at home, making it usable for health management at home.

What is called an acceleration pulse wave obtained by second-order differentiation of the pulse wave is classified into types A and G shown in Figure 4, and each acceleration waveform is the original waveform, which is It is classified according to its characteristics even when there is almost no change, and it is said to be good for checking the daily condition of healthy people. Furthermore, the effects of daily training appear to be almost unchanged in the pulse waveform, but are clearly visible in the acceleration waveform. For the above reasons, it is best to use an accelerated pulse waveform as a home pulse wave measuring device.

Therefore, it is possible to store standard waveforms in memory in advance, have a personal computer compare the stored waveforms with the waveforms just taken, and display precautions for daily health management or sports menus. It becomes possible. It is also possible to display a target waveform to be improved by still playing sports, walking, etc. Furthermore, it is also possible to display past waveforms in sequence and see the degree of improvement, or conversely, the degree of decline in health.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 and 2. In Fig. 1, 1 is a blood volume sensor, which has a built-in light emitting part 11 made of a tungsten lamp, etc., and a light receiving part 12 made of Cds, etc., and detects increases and decreases in the blood volume of the inserted fingertip by means of the transmittance of light. It is used to detect Reference numeral 2 denotes a signal conversion storage device, which has a signal conversion function of converting the output of the blood volume sensor 1 into an input signal to a general-purpose computer 3, and a storage function of storing the converted signal. So, it is a cartridge for Personal Computer 3. 21 is an intensifier, 22 is a gain adjuster, 23 is an AD converter, and 24 is a memory that stores a standard pulse wave waveform or past pulse wave waveforms, which are built in the signal conversion function device #2. ing. In FIG. 1, to connect the signal conversion storage device 2 and the general-purpose personal computer 3, a part of the connector (not shown) of the signal conversion storage device 2 is inserted into the cartridge insertion slot 4 of the personal computer 3.

Next, the operation in the above configuration will be explained. When a person to be measured inserts a fingertip into the blood volume sensor 1, the light emitted from the light emitting section 11 passes through the fingertip and reaches the light receiving section 12. At this time, since the blood portion within the fingertip absorbs light, the amount of light that reaches the light receiving section 12 changes depending on the increase or decrease in the amount of blood within the fingertip. It is medically clear that the amount of blood in a fingertip changes depending on the operating state of the heart and the elasticity of blood vessels in various parts of the body, and it is possible to know the state of health based on the increase or decrease in this amount of blood. Next, the output signal from the blood volume sensor 1 is input as an electrical signal to a signal conversion storage device 2, and an amplifier 2
1, and is adjusted to an appropriate level of the electrical signal by the action of the gain adjuster 22. Further, this electric signal is converted into a digital signal by an AD converter 23, and is inputted to a general-purpose personal computer 3 via a connector, where it is processed according to the purpose of the user.

That is, by reading out a pre-stored standard waveform from the memory 24, superimposing it with the measured waveform, and comparing it, even an amateur can determine the presence or absence of an abnormality, and if a standard waveform corresponding to a disease is stored, it can be used to identify the disease name to some extent. Furthermore, by recording the waveform in the waveform memory 24 of the person being measured, it is also possible to see the progress of the person being measured.

In addition to this, it is also possible to enlarge a part or perform statistical processing.

Note that the best memory 24 is considered to be a semiconductor memory backed up by a battery. Further, it is preferable to record the standard waveform in a ROM and record the measured waveform in a RAM.

In addition, an analog multiplexer, an electronic volume, etc. were used for the gain adjuster 22;
7. When using a heater as the main device, it is preferable to use an electronic volume in consideration of size, cost, etc.

FIG. 3 shows another embodiment, which is the same as the first embodiment shown in FIGS. 1 and 2 except that a second-order differentiator 25 is added. In operation, the analog output from the blood volume sensor 1 is sent to the amplifier 21.
Gain adjuster 22° quadratic differentiator 25. It is converted into a digital signal by the AD converter 23 and sent to the personal computer 3.
Enter. The personal computer 3 processes the information according to the user's purpose. The pulse wave waveform at this time shows a second-order differential form with respect to the original pulse wave, and the acceleration component shows extremely small changes in the original pulse wave waveform.

Therefore, as mentioned above, the blood circulation is categorized as shown in FIG. 4, and the quality of one's blood circulation can be seen at a glance.

This enables waveform display using the personal computer 3 and waveform comparison with standard waveforms or past waveforms stored in the memory 24, making it possible to manage daily health at home.

In this embodiment, the pulse wave is second-order differentiated using the second-order differentiator 26, but it is also possible to perform second-order differentiation using software using the personal computer 3.

Effects of the Invention As described above, according to the present invention, it is possible to easily compare a pulse wave waveform, which contains a large amount of information indicating the health condition of the body, with a standard pulse wave waveform or a past pulse wave waveform in a general household. It is extremely useful for health management at home, and since a general-purpose personal computer is used as the analysis and output means, the user can think of his or her preferred analysis method and display method, making it extremely useful for health management at home. It has a high value. Furthermore, since a general-purpose personal computer is not used for arithmetic processing, the dedicated device only requires a blood volume sensor and a signal conversion storage device, making it inexpensive and easy to obtain at home, so it is practical from a practical point of view. It is extremely practical. General-purpose personal computers are rapidly becoming popular due to their wide range of applications, and it is said that in a few years, there will be an era in which only one computer will be used in some areas. is clear.

Furthermore, if a personal computer based on the MSX standard is used as a general-purpose personal computer, the effects of the present invention can be achieved because MSX is an inexpensive model for general households, has unified standards, and has a fixed connector part format. will further increase.

[Brief explanation of drawings]

FIG. 1 is an external perspective view showing one embodiment of the device of the present invention, and FIG.
The figure is a block diagram of the main parts, FIG. 3 is a block diagram of another embodiment of the present invention, and FIG. 4 is an acceleration pulse wave waveform diagram. 1...Blood volume sensor, 2...Signal converter, 21...Amplifier, 22...Gain adjuster, 23...AD converter, 24...Memo 1, 1-125...Second-order differentiator, 3...Personal computer. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2

Claims (4)

[Claims] (1) Equipped with a blood volume sensor that detects increases and decreases in fingertip blood volume based on light transmittance, a general-purpose personal computer, an amplifier, a gain adjuster, an AD converter, and a memory.
a signal conversion storage device having a signal conversion function for converting the output of the blood volume sensor into an input signal to the personal computer and a storage function for storing the converted signal; A home-use pulse wave measurement device that stores pulse wave waveforms. (2) The home pulse wave measuring device according to claim 1, wherein the pulse wave waveform is an accelerated pulse wave waveform. (3) The home pulse wave measuring device according to claim 2, wherein the signal conversion storage device has a built-in differentiator. (4) A home pulse wave measuring device according to claim 1, 2 or 3, wherein the signal conversion storage device is a cartridge for a personal computer.