JPS6346131A - Apparatus for continuously measuring local perspiration amount - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] (Medical Application Field) The present invention relates to a continuous local sweat amount measurement Hn using humidity as an index and using a differential compensation method, which is also used for quantitative autonomic nerve function tests, etc. .

(Prior art) Conventionally, the amount of sweat was measured by flowing dry gas into a capsule that was worn on the skin, and guiding the increase in temperature due to evaporation of sweat to an electric hygrometer through a vibrator. ,
Ventilated capsule methods for continuously measuring sweat M have been attempted.

(Problems to be Solved by the Invention) However, the above conventional method lacks stability because the quality of the pipe connecting the capsule and the hygrometer and the gas flow m affect response and sensitivity. In addition, it requires a large amount of drying gas, which has disadvantages in terms of construction and economy.

The present invention solves the above-mentioned problems, and has a simple structure and high operability, which directly and continuously measures the amount of sweat without the intervention of dry gas using a small capsule attached to the skin. Local perspiration ml that can be used not only in the clinical medicine field
It is a technical problem to be solved to provide a measuring device for the first time.

(Means for solving the problem) The technical means for solving the above problem is a first humidity detection means that causes the local sweat amount continuous measuring device to detect the ambient humidity and output a signal corresponding to the detected humidity. In addition to establishing
A turnip leash that is formed with an air inflow hole for allowing air to flow in from the outside and an air outflow hole for allowing the inflowing air to flow out at a predetermined flow rate, and is attached to the skin surface when measuring the amount of perspiration from the C skin IO surface. and a second detecting the humidity of the air flowing into the capsule and outputting a signal corresponding to the detected humidity.
an air supply passage in which a humidity detection means is installed; an air delivery device for delivering a predetermined flow rate of air to the capsule via the air supply passage; By inputting the respective humidity detection signals outputted from the first humidity detection means and the second humidity detection means while air is being sent out and differentially recruiting both, A display device that inputs the amount of perspiration and outputs a display signal for displaying the amount of perspiration in an arbitrary display format; The present invention is to provide a configuration including display means for displaying in a display format.

(Function) According to the local sweat amount continuous measuring device having the above configuration, the first humidity detection means in the skin-mounted capsule detects the sweat emitted from the skin as well as the moisture in the air. The moisture in the air is detected by the installed second humidity detection means, and an output proportional to the difference in the electrical output of the binocularity detection means is obtained, so the amount of moisture contained in the air supplied to the capsule is Regardless, only local perspiration m can be continuously measured with high precision, and the amount of perspiration can be displayed in any display format.

(Example) Examples will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of one embodiment of the local sweat amount continuous measuring device using humidity as an index and using a differential compensation method according to the present invention;
FIG. 2 is a detailed block diagram of the digital performance circuit of the block diagram shown in FIG. 1, and FIG. 3 is a schematic diagram of the Kabupil.

In FIG. 1, a capsule 2, a humidity sensor 3, and a self-propelled multivibrator 4 constitute a moisture (sweat) detection unit dissipated from the skin (D) 1, and an air supply passage 5, a humidity sensor 6, and a self-propelled multivibrator 7. constitutes the air moisture detection section,
Further, the compressors 8 each constitute a source of blowing air (outside air).

The parts after F/V converter 9.10 constitute a differential arithmetic and data processing section.

Capsule 2 (skin) is attached to the X11 side in a tight state 'C'.

The two humidity sensors 3 and 6 installed in the capsule 2 and in the air passage 5 are of a capacitance type, and a change in capacitance in response to temperature immediately appears as a change in the frequency of the self-propelled multivibrator 4.7. The frequency output of the free-running multivibrator 4.7 is converted from frequency to voltage by F/V converters 9 and 10, and then led to the first arrival amplifier 11, where the difference IJ operation between the respective analog voltages is performed. The voltage proportional to the electrical output difference between the humidity sensor 3 in the skin-attached capsule 2 and the humidity sensor 6 in the air passage 5 thus obtained is data-processed in the digital logic circuit 12 and then sent to the printer 13. Changes in perspiration amount are displayed in analog form in real time, and the total perspiration rate, average perspiration rate per unit time, and perspiration frequency within a certain test time are digitally printed.

Next, the arithmetic control method of the digital processing circuit 12 shown in FIG. 1 will be explained with reference to FIG. 2.

A microprocessor (CPU) 20, for example 280, is used at the core of the digital performance circuit 12, and 8255, for example, are used for the input/output buffer circuits 22 and 26 to configure the system.

The analog signal output from the differential amplifier 11 is A/
It is changed into a digital value by the D comparator 21 and sent to the random access memory R through the human output buffer circuit 22.
Recorded on AM25. After the inspection, RAM2
Based on the data recorded in 5, each total n value is calculated using an operation n program written in the programmable read-only memory P-ROM 24. The calculated values are sent to the printer interface 27 through the human output buffer circuit 26, and finally the printer 13 digitally prints the calculated values. It should be noted that by using a multi-channel type A/D converter 21 and connecting a plurality of differential amplifiers 311 for differential performance of the humidity sensor 3 and the humidity sensor 6, it is possible to detect multiple points on the human body. It is possible to simultaneously measure sweating edges.

Next, the humidity/moisture (sweat) detection section shown in FIG. 1 will be explained with reference to FIG. 3. The Kabu Pill 2 and the humidity sensor 3. The self-propelled multi-vibration break-4 constitutes a detection section (moisture and sweat dissipated from the skin), and the air inflow hole 31, air outflow hole 32 formed in the turnip hill 2, and the air supply passage 5 constitute an air circuit section. . Moisture (sweat) released from the skin fills the capsule 2. However, since the capsule 1 is filled with moisture (sweat) due to insensible sweating, a certain amount of moisture is always maintained by the air flowing into the air supply passage 5 through the air inflow hole 31 through the air outflow hole. 32 to the outside air. The frequency of the self-propelled multivibrator 4 changes because the humidity L sensor 3 senses the change in moisture (sweat) caused by the stimulation and outputs it as an electrostatic change. This is input as a signal to the F/V converter 9 through the electric wire 33.

(Effects of the Invention) As is clear from the above description, according to the present invention, while blowing low ω air (outside air) into a small capsule attached to the skin, two Due to the difference in the electrical output of the humidity sensor, etc., the amount of local sweating increases by 1! Continuous measurements can be performed easily and with high accuracy.

The present invention can be applied not only to clinical medicine, physical fitness, and sports medicine as an autonomic nervous system testing device, but also as a means of testing daily necessities, such as measuring the influence of moisture evaporation in cosmetics, etc., and measuring moisture movement in clothing. .

It can also be used in the field of products, and has great social intrigue.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of one embodiment of the local sweat amount continuous measuring device using humidity as an index and using a differential compensation method according to the present invention;
FIG. 2 is a diagram for explaining the arithmetic control system of the digital performance circuit shown in the block diagram shown in FIG. 1, and FIG. 3 is a structural diagram of the capsule. 1...Skin 2...Capsule 3.6...Humidity sensor 4.7...Self-propelled multivibrator 5...Air supply passage 8...Compressor 9.10...F/V converter 11...Differential amplifier 12...Digital Ut'2 circuit 13...Printer

Claims (2)

[Claims] (1) A first humidity detection means that detects the ambient humidity and outputs a signal corresponding to the detected humidity is installed, as well as an air inflow hole for allowing air to flow in from the outside and the incoming air to flow out at a predetermined flow rate. A capsule is formed with an air outflow hole to detect the humidity of the air flowing into the capsule and the capsule is attached to the skin surface when measuring the amount of perspiration from the skin surface, and outputs a signal corresponding to the detected humidity. an air supply passage in which a second humidity detection means is installed; an air delivery device for delivering a predetermined flow rate of air to the capsule through the air supply passage; While air is being delivered to the capsule, humidity detection signals outputted from the first humidity detection means and the second humidity detection means are inputted and a differential calculation is performed on the two, thereby detecting the skin surface. calculation means for calculating the amount of perspiration from the user and outputting a display signal for displaying the amount of perspiration in an arbitrary display format; 1. A continuous measurement device for local sweat amount, comprising: display means for displaying in a display format. (2) The display means is a printer, and the printer displays the sweat amount as an analog value corresponding to the measurement time, and also displays the total sweat amount, average sweat amount per unit time, sweat frequency, etc. within a certain test time. 2. The continuous local sweat measurement device according to claim 1, wherein the device displays a digital value at the end of the test.