CN112869726A - Health detection device based on reverse optical communication - Google Patents
Health detection device based on reverse optical communication Download PDFInfo
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- CN112869726A CN112869726A CN202110023161.2A CN202110023161A CN112869726A CN 112869726 A CN112869726 A CN 112869726A CN 202110023161 A CN202110023161 A CN 202110023161A CN 112869726 A CN112869726 A CN 112869726A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/026—Measuring blood flow
- A61B5/0261—Measuring blood flow using optical means, e.g. infrared light
Abstract
The invention relates to a health detection device based on reverse optical communication. The health detection device based on the reverse optical communication comprises an energy module, a transmitting module, a receiving module and a processing module; wherein: the energy module is connected with the transmitting module, the receiving module and the processing module and is used for providing electric energy for the transmitting module, the receiving module and the processing module; the transmitting module is used for transmitting a detection optical signal which can penetrate through skin and blood vessels; the receiving module is used for receiving a reflected light signal reflected by blood in the blood vessel and converting the reflected light signal into a photocurrent signal; the processing module is connected with the receiving module and used for converting the photocurrent signal into a pulse signal. The invention realizes health detection in a non-invasive detection mode, has the advantages of convenient operation, high sensitivity, strong reliability and the like, and has wide application prospect in the fields of health detection, early warning and the like.
Description
Technical Field
The invention relates to the technical field of visible light communication, in particular to a health detection device based on reverse optical communication.
Background
With the continuous development of scientific technology and the continuous improvement of living standard, people pay more and more attention to health. Among them, the health condition of blood vessels is an important determination index of the health condition of human body. Currently, in the process of detecting the health condition of a human body, a large-scale detection device is required, which is high in cost and has defects in the detection accuracy. In addition, current detection equipment often can cause injury to human tissue when detecting, for example puncture, and user experience is poor.
Therefore, how to improve the accuracy of health detection, reduce the damage to human body in the detection process, and improve the user experience is a technical problem to be solved urgently at present.
Disclosure of Invention
The invention provides a health detection device based on reverse optical communication, which is used for solving the problems that the detection accuracy of the health detection device in the prior art is relatively low and the human body is easily damaged.
In order to solve the above problems, the present invention provides a health detection device based on reverse optical communication, which includes an energy module, a transmitting module, a receiving module and a processing module; wherein:
the energy module is connected with the transmitting module, the receiving module and the processing module and is used for providing electric energy for the transmitting module, the receiving module and the processing module;
the transmitting module is used for transmitting a detection optical signal which can penetrate through skin and blood vessels;
the receiving module is used for receiving a reflected light signal reflected by blood in the blood vessel and converting the reflected light signal into a photocurrent signal;
the processing module is connected with the receiving module and used for converting the photocurrent signal into a pulse signal.
Optionally, the emission module includes a plurality of first quantum well diodes arranged in an array, and the first quantum well diodes are used for emitting the detection optical signal;
the receiving module comprises a plurality of second quantum well diodes which are arranged in an array, and the second quantum well diodes are used for receiving reflected light signals reflected by blood in the blood vessel.
Optionally, the method further includes:
the first quantum well diode and the second quantum well diode are both located on a first surface of the common substrate, and the first quantum well diode and the second quantum well diode have the same quantum well structure.
Optionally, the method further includes:
the adhesive film is positioned on the second surface of the public substrate, the first surface and the second surface are distributed at two opposite ends of the public substrate, and the adhesive film is used for attaching the public substrate to the surface of skin.
Optionally, the method further includes:
the first substrate is provided with a first quantum well diode;
the second substrate is independent from the first substrate, and the second quantum well diode is arranged on the surface of the second substrate.
Optionally, the method further includes:
and the input end of the filtering amplification module is connected with the receiving module, and the output end of the filtering amplification module is connected with the processing module and is used for filtering noise and amplifying the photocurrent signal.
Optionally, the method further includes:
and the display module is connected with the processing module and used for displaying the pulse signals.
Optionally, the processing module is configured to convert the photocurrent signal into a digital signal, and perform time domain analysis on a plurality of digital signals within a preset time period to obtain a heart rate signal.
Optionally, the emitting module is configured to continuously emit the detection light; alternatively, the first and second electrodes may be,
the emitting module periodically emits the detection light.
The health detection device based on the reverse optical communication transmits detection optical signals capable of penetrating through skin and blood vessels to the skin through the transmitting module, receives reflected optical signals reflected by blood in the blood vessels through the receiving module, converts the reflected optical signals into photocurrent signals, and reflects the blood condition in the blood vessels through the photocurrent signals, so that the health condition is detected. The invention realizes health detection in a non-invasive detection mode, has the advantages of convenient operation, high sensitivity, strong reliability and the like, and has wide application prospect in the fields of health detection, early warning and the like.
Drawings
FIG. 1 is a schematic structural diagram of a health detection device based on reverse optical communication according to an embodiment of the present invention;
fig. 2 is a schematic optical path diagram of a detection optical signal and a reflection optical signal according to an embodiment of the present invention.
Detailed Description
The following describes in detail a specific embodiment of the health detection apparatus based on reverse optical communication according to the present invention with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a health detection apparatus based on reverse optical communication in an embodiment of the present invention, and fig. 2 is a schematic optical path diagram of a detection optical signal and a reflected optical signal in an embodiment of the present invention. As shown in fig. 1 and fig. 2, the health detection apparatus based on reverse optical communication provided by the present embodiment includes an energy module 10, a transmitting module 11, a receiving module 12, and a processing module 13; wherein:
the energy module 10 is connected to the transmitting module 11, the receiving module 12 and the processing module 13, and is configured to provide electric energy to the transmitting module 11, the receiving module 12 and the processing module 13;
the emitting module 11 is used for emitting a detection optical signal, and the detection optical signal can penetrate through skin and blood vessels;
the receiving module 12 is configured to receive a reflected light signal reflected by blood in the blood vessel and convert the reflected light signal into a photocurrent signal;
the processing module 13 is connected to the receiving module 12, and is configured to convert the photocurrent signal into a pulse signal.
Specifically, when the health detection device based on reverse optical communication is used to detect a finger 17, the energy module 10 transmits a driving signal to a driving module 14, and the driving module drives the emitting module 11 to emit the detection optical signal TL with a specific wavelength to the finger 17 according to the driving signal. The detection light signal TL penetrates a blood vessel 22 (e.g., a arteriole, a capillary vessel, etc.) in the superficial part of the skin 21 of the finger 17 to irradiate the blood 23 in the blood vessel 22, and is absorbed by particles (e.g., platelets, oxyhemoglobin, bilirubin, etc.) in the blood 23, so that the volume change information of the blood 23 in the blood vessel 22 is loaded on the reflected light, and finally transmitted to a receiving end (i.e., the receiving module 12) in a reflection manner. In the process, because the absorption of the detected light signal by skin muscles, tissues and the like is kept relatively constant in the whole blood circulation, the blood volume in the skin is pulsated and changed under the action of the heart, the peripheral blood volume is the largest when the heart contracts, the light absorption amount is also the largest, and the intensity of the detected light (namely the reflected light signal) is the smallest; in diastole, on the contrary, the intensity of the detected light (i.e. the reflected light signal) is the maximum, so that the light intensity received by the receiving end (i.e. the receiving module 12) is changed in a pulsatile way, and the light intensity change signal is converted into a photocurrent signal, so that the change of the volume pulse blood flow can be obtained. The transmitting module 11, the variable blood volume and the receiving module 12 form a reverse optical communication system, which realizes the conversion between the blood pulsation signal and the optical signal and the conversion between the optical signal and the photocurrent signal. The photocurrent signal is processed by the processing module 13, so that the change information of the volume pulse and blood flow of the blood vessel can be fed back and restored, the change dynamics of the heart and the brain and internal organs can be obtained, and the aims of health detection and early warning can be fulfilled.
Optionally, the transmitting module 11 includes a plurality of first quantum well diodes arranged in an array, and the first quantum well diodes are used for transmitting the detection optical signal;
the receiving module 12 includes a plurality of second quantum well diodes arranged in an array, and the second quantum well diodes are configured to receive a reflected light signal reflected by blood in the blood vessel.
Optionally, the apparatus for detecting health based on reverse optical communication further includes:
the first quantum well diode and the second quantum well diode are both located on a first surface of the common substrate 20, and the first quantum well diode and the second quantum well diode have the same quantum well structure.
Specifically, because the emission spectrum and the optical detection spectrum of the quantum well diode have an overlapping region, the quantum well diode optical detector can absorb short-wavelength high-energy photons emitted by the same quantum well diode to generate photocurrent. In the present embodiment, the first quantum well and the second quantum well with the same quantum well structure are fabricated on the same chip (i.e. a homogeneous integrated optoelectronic chip is formed), and are respectively used as the transmitting end and the receiving end of the reverse optical communication system. The specific embodiment forms an emission array by arranging a plurality of first quantum well diodes, which is beneficial to enhancing the intensity of emitted light; meanwhile, the plurality of second quantum well diodes are arranged to form a receiving array, so that the receiving intensity is improved, and the detection precision of the health detection device based on the reverse optical communication can be improved.
Optionally, the apparatus for detecting health based on reverse optical communication further includes:
the adhesive film is located on the second surface of the public substrate 20, the first surface and the second surface are distributed at two opposite ends of the public substrate 20, and the adhesive film is used for attaching the public substrate 20 to the skin surface.
Specifically, an adhesive film may be disposed on the surface of the common substrate 20, so that the emitting module 11 and the receiving module 12 may be attached to the skin surface, thereby implementing contact detection, reducing the light propagation path, and reducing the interference of ambient light.
In other embodiments, a person skilled in the art may also omit the adhesive film according to actual needs, so that a gap is formed between the transmitting module 11 and the receiving module 12 and the skin during the detection process, thereby avoiding direct contact between the detection apparatus and the skin, implementing non-invasive and non-contact detection, and avoiding discomfort (e.g., allergy) caused by direct contact with the skin.
Those skilled in the art can also separate the transmitting module 11 and the receiving module 12 according to actual needs, so as to adjust the structures of the transmitting module 11 and the receiving module 12 according to actual needs. Optionally, the apparatus for detecting health based on reverse optical communication further includes:
the first substrate is provided with a first quantum well diode;
the second substrate is independent from the first substrate, and the second quantum well diode is arranged on the surface of the second substrate.
Optionally, the apparatus for detecting health based on reverse optical communication further includes:
and the input end of the filtering amplification module 15 is connected with the receiving module 12, and the output end of the filtering amplification module 15 is connected with the processing module 13, and is used for filtering noise and amplifying the photocurrent signal.
Optionally, the apparatus for detecting health based on reverse optical communication further includes:
and the display module 16 is connected with the processing module 13 and is used for displaying the pulse signals.
Optionally, the processing module is configured to convert the photocurrent signal into a digital signal, and perform time domain analysis on a plurality of digital signals within a preset time period to obtain a heart rate signal.
Specifically, the emitting module 11 emits continuous, stable light with a specific wavelength (i.e. the detection optical signal) to irradiate the skin, and the weak change of the skin tissue and blood can modulate the reflected light because the detection optical signal is absorbed, scattered, reflected and the like by the skin tissue and blood at the detection end and then has a certain attenuation to the receiving module 12, and the absorption of the detection optical signal by the muscles, bones, veins and other connective tissues is basically unchanged (provided that the measurement part (i.e. the skin) does not move with a large amplitude), but the blood is different, and because the blood volume in the blood vessel changes in a pulsating manner under the action of the heart, the blood volume in the peripheral blood vessel is the largest when the heart contracts, and the absorption amount of the light is also the largest; in diastole, on the contrary, the absorption amount of blood to light is the minimum, so that the reflected light signal reflected to the receiving module 12 is pulsatory, thereby realizing the conversion of physiological signals to light signals. The receiving module 12 converts the changed reflected light signal into a photocurrent signal, filters out high-frequency interference and mains power frequency noise through the filtering and amplifying module 15, and amplifies a low-frequency volume pulse blood flow change signal (i.e., the photocurrent signal) to obtain a PPG (photoplethysmography) signal. The PPG signal enters the processing module 13, is converted into a digital signal through analog-to-digital conversion, and is processed by a decision algorithm to recover the dynamic physiological signal of the blood vessel. The processing module 13 is connected with an upper computer (for example, a display module 16) and can display the real-time pulse wave waveform on the upper computer. Processing module 13 can obtain the number of PPG signal in certain time through carrying out time domain analysis to digital signal, and then reachs current heart rate numerical value.
The person skilled in the art can also adjust the light emitting mode of the emitting module 11 according to actual needs, thereby improving the flexibility of the health detection apparatus based on reverse optical communication. Optionally, the emitting module 11 is configured to continuously emit the detection light; alternatively, the first and second electrodes may be,
the emitting module 11 periodically emits the detection light.
In the health detection device based on the reverse optical communication according to the present embodiment, the emitting module emits the detection optical signal capable of penetrating through the skin and the blood vessel to the skin, the receiving module receives the reflected optical signal reflected by the blood in the blood vessel and converts the reflected optical signal into the photocurrent signal, so as to reflect the blood condition in the blood vessel with the photocurrent signal, thereby realizing the detection of the health condition. The invention realizes health detection in a non-invasive detection mode, has the advantages of convenient operation, high sensitivity, strong reliability and the like, and has wide application prospect in the fields of health detection, early warning and the like.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A health detection device based on reverse optical communication is characterized by comprising an energy module, a transmitting module, a receiving module and a processing module; wherein:
the energy module is connected with the transmitting module, the receiving module and the processing module and is used for providing electric energy for the transmitting module, the receiving module and the processing module;
the transmitting module is used for transmitting a detection optical signal which can penetrate through skin and blood vessels; the receiving module is used for receiving a reflected light signal reflected by blood in the blood vessel and converting the reflected light signal into a photocurrent signal;
the processing module is connected with the receiving module and used for converting the photocurrent signal into a pulse signal.
2. The apparatus according to claim 1, wherein the transmitting module comprises a plurality of first quantum well diodes arranged in an array, the first quantum well diodes being configured to transmit the detection optical signal;
the receiving module comprises a plurality of second quantum well diodes which are arranged in an array, and the second quantum well diodes are used for receiving reflected light signals reflected by blood in the blood vessel.
3. The apparatus for health detection based on reverse optical communication according to claim 2, further comprising:
the first quantum well diode and the second quantum well diode are both located on a first surface of the common substrate, and the first quantum well diode and the second quantum well diode have the same quantum well structure.
4. The apparatus for health detection based on reverse optical communication according to claim 3, further comprising:
the adhesive film is positioned on the second surface of the public substrate, the first surface and the second surface are distributed at two opposite ends of the public substrate, and the adhesive film is used for attaching the public substrate to the surface of skin.
5. The apparatus for health detection based on reverse optical communication according to claim 2, further comprising:
the first substrate is provided with a first quantum well diode;
the second substrate is independent from the first substrate, and the second quantum well diode is arranged on the surface of the second substrate.
6. The apparatus for health detection based on reverse optical communication according to claim 1, further comprising:
and the input end of the filtering amplification module is connected with the receiving module, and the output end of the filtering amplification module is connected with the processing module and is used for filtering noise and amplifying the photocurrent signal.
7. The apparatus for health detection based on reverse optical communication according to claim 1, further comprising:
and the display module is connected with the processing module and used for displaying the pulse signals.
8. The apparatus according to claim 1, wherein the processing module is configured to convert the photocurrent signal into a digital signal, and perform time domain analysis on a plurality of digital signals within a preset time period to obtain a heart rate signal.
9. The apparatus for health detection based on reverse optical communication according to claim 1, wherein the emitting module is configured to continuously emit the detection light; alternatively, the first and second electrodes may be,
the emitting module periodically emits the detection light.
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| CN202110023161.2A CN112869726A (en) | 2021-01-08 | 2021-01-08 | Health detection device based on reverse optical communication |
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| CN202110023161.2A CN112869726A (en) | 2021-01-08 | 2021-01-08 | Health detection device based on reverse optical communication |
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| CN108514407A (en) * | 2018-05-14 | 2018-09-11 | 深圳市深光谷科技有限公司 | A kind of contactless pulse measurement device |
| CN108680929A (en) * | 2018-07-18 | 2018-10-19 | 度亘激光技术（苏州）有限公司 | A kind of three-dimensional sensing system based on vertical cavity surface emitting laser arrays |
| TW201907864A (en) * | 2017-07-19 | 2019-03-01 | 長庚大學 | Pulse detection apparatus |
| CN111248889A (en) * | 2020-01-19 | 2020-06-09 | 浙江大学 | Pulse wave measuring device and method based on LED diode and LED display matrix |
| CN111668213A (en) * | 2020-07-09 | 2020-09-15 | 南方科技大学 | Heart rate detection chip, preparation method thereof and wearable device |
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2021
- 2021-01-08 CN CN202110023161.2A patent/CN112869726A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120220841A1 (en) * | 2011-02-24 | 2012-08-30 | Nellcor Puritan Bennett Llc | Medical sensor using photonic crystal led |
| CN203988032U (en) * | 2014-08-08 | 2014-12-10 | 王丽婷 | Reflection type photoelectricity pulse wave sensor |
| TW201907864A (en) * | 2017-07-19 | 2019-03-01 | 長庚大學 | Pulse detection apparatus |
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| CN108514407A (en) * | 2018-05-14 | 2018-09-11 | 深圳市深光谷科技有限公司 | A kind of contactless pulse measurement device |
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