JPH03231628A - Photoelectric type telemeter sensor - Google Patents

Abstract

PURPOSE:To enable the adhering to and fixing on a small finger and a part hard to mount to use by integrating an infrared photosensor with a battery, an antenna and an electrode to be built into a support made of a molding rubber. CONSTITUTION:This apparatus is made up of a mounting case of a molded rubber support 3 having an infrared rays emitting element integrated with a battery 1 and an antenna electrode 2 and an adhesive keeping face 6 to keep the sensor body and has a circuit inside which converts a change signal into frequency from voltage after the irradiation of infrared rays to be emitted outside by a wireless radio wave. A photo sensor section 4 of the molded rubber support 3 containing the circuit is adhered to skin with an adhesive tape 6 and irradiated with the infrared rays to detect and transmit a change in capacity of blood of a blood tube. To eliminate effect from outside light, a light emitting element 8 is flashed with a modulator 7 to irradiate an organism with the infrared rays and the reflected light thereof is converted into an electrical signal with a photo detector 9 to be amplified with an amplifier 11. A true signal component is selected with a demodulator 12 and a signal converted into frequency from voltage with an oscillator circuit 13 is transmitted with the antenna 2.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a photoelectric telemeter sensor, and in particular, it is used for non-invasive continuous measurement of brain waves, blood pressure, heart rate, gas partial pressure, etc. using signals detected by infrared irradiation. This invention relates to a photoelectric telemeter sensor that transmits wirelessly.

[Conventional technology]

Conventionally, this type of photoelectric telemeter sensor used a cable attached to the main body to irradiate light onto a living body using a light emitting diode or semiconductor laser, and obtain various biological signals from changes in reflected or transmitted light at this time. .

[Problem to be solved by the invention]

With conventional photoelectric telemeter sensors, the sensor with a cable attached to the measuring device itself was fixed to the living body with a magic band, and the patient had to be at rest to avoid body movements or shifts when recording biological signals. Furthermore, the sensor itself has a large shape and size, making it difficult to attach it to a fingertip or other area.

[Means to solve the problem]

The photoelectric telemeter sensor of the present invention is a photoelectric telemeter sensor that performs non-invasive biological signal sensing, and includes an infrared photoelectric reflective sensor, a battery that drives the reflective sensor, and an output of the reflective sensor. It is comprised of an electrode antenna that transmits radio frequency waves, and a molded rubber mounting support that houses them.

〔Example〕

The photoelectric telemeter sensor of the present invention consists of a mounting case of a molded rubber support in which an infrared light-emitting element is integrated with a battery and an antenna electrode, and an adhesive tape that holds these sensor bodies, and the inside changes after infrared irradiation. V/F conversion of the signal (
It has a circuit that performs voltage/frequency conversion) and emits radio waves to the outside.

Figure 3 is a side view of the sensor attached to the fingertip to detect brain wave signals. The system detects changes in blood volume in blood vessels and transmits them via radio waves.

In order to eliminate the influence of external light, a modulator 7 irradiates a living body with infrared light generated by blinking a light emitting element 8, and the reflected light is converted into an electrical signal by a light receiving element 9 and amplified by an amplifier 11. Demodulator 12
selects the true signal component 11 and converts it to V/F in the oscillation circuit 13.
The converted signal is transmitted by antenna 2. 10 is a synchronization circuit for the variable regulator, and 1 is a button type battery that supplies power to the circuit.

〔Effect of the invention〕

As explained above, the present invention has an infrared photo sensor and a battery.
The antenna and electrode are integrated into a molded rubber support and the signal is transmitted wirelessly, so it can be easily attached and fixed with commercially available adhesive tape to small fingers or other areas that are difficult to attach. There are no restrictions on where it can be worn, stable data can be recorded even while exercising, and it is easier to handle.

[Brief explanation of drawings]

Figures 1 (a) and (b) are a top view and a vertical cross-sectional view of an embodiment of the present invention, Figure 2 is a block diagram showing the configuration of this embodiment, and Figure 3 shows the device worn on a fingertip. Side view when recording photoplethysmograms. 1... Button battery, 3... Antenna electrode, 3...
Molded rubber support, 4... Infrared photosensor, 5... I
C substrate, 6... Adhesive tape for holding down, 7... Modulation oscillator, 8... Light emitting element, 9... Light receiving element, 10...
・Synchronization circuit,...amplifier, 2...demodulation circuit, 3...oscillator path.

Claims (1)

[Claims] A photoelectric telemeter sensor that performs non-invasive biological signal sensing includes an infrared photoelectric reflective sensor, a battery that drives the reflective sensor, and an electrode antenna that transmits the output of the reflective sensor as a radio frequency. , and a molded rubber mounting support in which these are built-in.