JPS59192346A - Photoelectric brain waves sensor - 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 The present invention relates to an electronic clock with a built-in heart rate Wi.

Since heart rate increases and decreases in proportion to exercise intensity, it is important to measure heart rate at the first step of safe and economical exercise management. For this reason, the heart rate company 1r has a built-in digital r
Kuzi arms and elbows have been developed and put into practical use.

Typical means for detecting heartbeat (pulse) are a photoelectric pulse wave detected by a photoelectric sensor in the blood flow 1, and a cardiac potential type that detects cardiac potential. An electrocardiogram detection method capable of low-power operation is excellent for incorporating into the d-time cycle.

The first intersection schematically shows the structure of the electrocardiogram-detecting heart rate watch. 1 is a housing, which is preferably made of an electrical insulator such as plastic. 2.
Reference numeral 3 denotes a metal electrode made of stainless steel or the like, and normally electrode 2 contacts the finger Vζ of the right hand, electrode 3 contacts the left wrist,
Induce cardiac potential between right hand and left hand. 4 is an electronic circuit consisting of a cardiac potential amplification circuit, a heart rate calculation/display circuit, and a clock circuit; 6 5 is a battery; and 6 is a fluid 1 indicator. Between the white electrodes 2 and 3, the 1 positive center point shown in FIG. 2 is induced. In the 21st N, the Q and R8 waves are waves ``L'' indicating the excitation of the ventricular muscle, and the T wave is a wave indicating the disappearance of the excitation. Basically, a cardiac potential detection type heart rate meter amplifies the cardiac potential to a certain degree, measures the interval between 8 QR waves, and calculates the heart rate by 3↑ from that cycle to save water. It is a device. Since the energy involved in detecting cardiac potential itself is unknown, the cost of this cardiac potential detection type is negligible, making it suitable for use as a wristwatch.However, the heart rate monitor shown in Figure 1 can be It is almost impossible to measure the heart rate N'fr. Therefore, in order to continuously measure heart rate while running, a band-type pectoral pole as shown in FIG. 3 has been developed. 9 is an elastic band; 10 is a neck band for fixing the band 9 in the vertical direction;
Reference numerals 11 and 12 refer to the band 9K (!: the chest electric shuttle attached to the chest wall, 13 and 14 the conductive wires, and 15 the tongue that electrically connects the electrocardiogram to the electrocardiogram amplifier). It is a connector.

Now, since the electrode electrode 12 is close to the heart, is there a large cardiac potential 'K? ,',V'F9 L, - Its value is also stable, and the heart rate during running can be sufficiently measured. However, to measure heart rate every time I run, I wear chest electrodes.
This is a nuisance for people in the area.The invention was made in order to solve this shortcoming. Number H
↑It provides a means that allows one child to be supplied to one temple. Hereinafter, the present invention will be explained with reference to the drawings.

FIG. 4 is a diagram showing an embodiment of the present invention. Reference numeral 16 denotes a stretchable honeycomb, and a pulse wave detector main body 17 is attached to the honeycomb. Reference numeral 18 denotes an earlobe pulse wave sensor that photoelectrically detects the blood flow in the earlobe.
It is connected to the original wave detector body. Pulse number 1 is sent from the main body of the pulse wave detection 4 to the cardiac potential detection circuit in the electronic wristwatch J↑ with a heart rate monitor via the 4 wire 20 and the connector 15i. As shown in the fifth factor, inside the ear transducer 18, there is a light emitting diode 21 that emits infrared light, and a light emitting diode 21 that emits infrared light that passes through the ear 7t and detects the emitted infrared light. Contains a phototransistor. Also, inside the pulse wave detector main body 17.

A resistor 25, a battery (approximately 3V) 24, and a switch 25 for turning on and off the power supply are housed in the phototransistor.

19 and 20 are the conductors explained in the 41st bacterium, and in particular, the 4I group 19 is the earlobe transducer TL! 1II
It is essential that it be as thin as possible so as not to cause damage. Since the operating principle of this type of photoplethysmogram detection device is already common, its explanation will be omitted.

FIG. 6 shows a voltage waveform generated across the resistor 23, and a waveform synchronized with the heartbeat is obtained. This signal is applied to the electrocardiogram amplification circuit ji3Vc of the electrocardiogram detection type heart rate monitoring electronic wristwatch through the connector 15.

The Q and R8 waves shown in Fig. 2 and the frequency component t of the pulse wave shown in Fig. 6 are completely different (the latter is in the lower range), but the pulse wave height value can fit at least 5 mV. ,
The pulse wave can be detected as the cardiac potential.

It is already known that the method of attaching a photoplethysmographic sensor to the earlobe allows relatively stable pulse wave light even while driving. The feature of the present invention is that the method is adopted as an alternative method to the chest electrode for electrocardiographic detection type heart rate IT.

The present invention therefore has the following effects.

(1) Since it is sufficient to simply attach the earlobe sensor to the ear and attach the 1,000 rolls to the forehead, the troublesome task of attaching the chest electrode is eliminated.

(21HI The pulse wave detector main body includes pulse wave detector, part 1.
Since there is no display part, it is lightweight and can be worn on the forehead.
υI have no sense of free time.

(3) Since the pulse wave detector body KW and source are built-in, there is no need for supervision when using the electrocardiogram type electronic wristwatch with heart rate set. This is a significant advantage considering that the electrocardiographic heart rate electronic wristwatch is usually used as a wristwatch.

(4) Although the battery of the pulse wave detector runs out relatively quickly, maintenance is easy because it uses an inexpensive battery.

<5) Pulse rate (heartbeat Pi) is l! ! Zeno landed on tl 1. It is easy to see.

As mentioned above, non-invention has many effects.

[Brief explanation of the drawing]

Calm 1 diagram rL heart rate lateral type heartbeat i [Tsuki α child u 1 temple attack 1'') Diagram showing the formation of 1 ecstasy, 21st square is No 1) Diagram showing potential. 31.1 1 is the band type chest 1) Figure 6 Fi photoelectric pulse i
This is a diagram showing a truncated waveform. 1... Housing 2, 3... Money ¥4... Handle 4... Electronic circuit 5...
・・Battery 6・・・Liquid crystal display path 7.8・・・・
...Pin holder []9...Band 10...
... Neck band 11.12 ... Chest Iu pole 13, 1 + ... Conductor 15 ... Socket 16 ... Bee heat 17 ... ...Detector base salary 18...4f, Pulse wave sensor 19.20.../is '21...
...Light emitting diode 22...Phototransistor 23...Resistor 24...Battery 25...Switch

Claims (2)

[Claims] (1) A photoplethysmogram that is connected to the electrocardiogram detection type heart rate meter built into the wristwatch H1, and that supplies its own detection number 1g to the electrocardiogram amplification circuit of the heart rate correction described in 11. sensor. (2) Pulse Wave Detection The photoelectric pulse wave sensor according to claim 1, which has a built-in power supply that supplies the necessary energy, and detects the pulse wave of the earlobe.