WO2018120165A1

WO2018120165A1 - Pulse condition detection apparatus and method

Info

Publication number: WO2018120165A1
Application number: PCT/CN2016/113836
Authority: WO
Inventors: 郭涛; 阳光
Original assignee: 深圳配天智能技术研究院有限公司
Priority date: 2016-12-30
Filing date: 2016-12-30
Publication date: 2018-07-05
Also published as: CN107979984A

Abstract

A pulse condition detection apparatus and method. The method comprises: a sensor device (1) contacts the skin surface, and converts deformations of different parts of the skin surface into changes in luminous intensities of corresponding different parts on the surface of the sensor device (1) (S101); an acquisition device (2) acquires the luminous intensities and obtains light field distribution information of the sensor device (1) (S102); determine corresponding deformation information of the parts of the skin surface according to the current luminous intensities by calling pre-established corresponding relationships between luminous intensities and deformation information on the basis of the light field distribution information (S103). The pulse condition detection apparatus and method converts deformations of the skin surface into distributed light field intensities, so that the different deformations at various parts directly lead to different luminous intensities of the material at various parts, thereby greatly improving the spatial resolution of detection of skin surface deformations. The luminous intensities of the material at the various parts are captured by means of a high-resolution optical sensing technology to finally achieve high-resolution detection of skin surface deformations.

Description

Pulse detection device and method

Technical field

The invention relates to the technical field of pulse diagnosis of traditional Chinese medicine, in particular to a pulse detection device and method.

Background technique

There are many pulse detection technologies on the market, including wearable heart rate detection, medical pulse oximetry and TCM pulse diagnosis system.

The method of pulse detection in the prior art is mainly based on two principles. One is based on the principle of PPG signal, which uses light source to illuminate human tissue. The absorption of light by other tissues such as human tissue skin, muscle, bone and venous blood is constant, and the fluctuation of oxygenated arterial blood will cause The change in the light absorption rate, and thus, the change in the absorption amount of the light detected by the photodetector can determine the pulse waveform, heart rate, blood oxygen saturation, and the like. This principle is mainly applied to wearable type heart rate detection and medical pulse oximetry. Another principle is based on pressure/deformation sensing, mainly airbag, spring (and similar principles), which converts the deformation of the skin surface with pulse fluctuations into pressure and then uses a pressure detector to detect the pulse waveform.

At present, the PPG program mainly uses arterial blood to measure the pulse, which is often detected at the fingertips. Here, the arterial blood vessels are abundant and superficial, and the detection site required by the pulse diagnosis instrument is the inch of the wrist. The location is deep and difficult to detect. At the same time, the essence of PPG detection is the blood flow of arteries, mainly based on Western medical theory, and the pulse diagnosis method described in TCM theory (such as "Pulse") is mainly based on the finger's perception of skin surface deformation and pressure. Whether it has a strict correspondence with arterial blood flow, it can not be demonstrated at present, therefore, the data collected by this scheme cannot be directly used for pulse diagnosis.

The pressure/deformation program can simulate the contact between the finger and the skin more intuitively. It conforms to the relevant description of TCM theory and is also used by most TCM pulse diagnosis products and can reflect some symptoms. However, the finger is not a single-point sensor, but there are many small deformation/pressure sensors distributed on the surface. There is also a lot of information in the theory of Chinese medicine that is described in the way of a ball, such as water bleaching, etc. The feeling of information is precisely the need for a large number of sensing points, the key skin The skin area can be obtained by distributed detection. At present, the pressure/deformation sensing scheme is limited by integration, and often uses single-point detection or very low-density detection (for example, 5 points per square centimeter), which cannot meet the requirements of the Chinese medicine theory for sensors.

Summary of the invention

It is an object of the present invention to provide a pulse detection apparatus and method for solving the problem that the existing pulse detection technology has a low detection density and the collected data does not meet the pulse diagnosis requirements.

To solve the above technical problem, the present invention provides a pulse detection device, including:

a sensing device, a collecting device, and a processor;

Wherein the sensing device is used to contact the surface of the skin to convert the deformation of different parts of the skin surface into changes in the luminous intensity corresponding to different parts of the surface of the sensing device;

The collecting device is configured to collect the illuminating intensity of the sensing device, and obtain light field distribution information of the sensing device;

The processor is configured to invoke a correspondence between the pre-established luminous intensity and the deformation information according to the light field distribution information, and determine deformation information of each part of the corresponding skin surface according to the current luminous intensity.

Optionally, the sensing device employs a flexible luminescent material and is a luminescent array composed of a plurality of illuminating elements.

Optionally, the method further includes: a memory, wherein the memory stores a correspondence between the pre-established luminous intensity and deformation information, and the correspondence is established based on material properties of the flexible luminescent material.

Optionally, the flexible luminescent material is an elastic material.

Optionally, the light-emitting element is a sandwich structure element formed of a silicone resin, a polyacrylamide-lithium chloride hydrogel, and a zinc sulfide silicone resin.

Optionally, the collecting device is a camera.

Optionally, the sensing device is powered by a battery.

Optionally, the sensing device employs a cylindrical structure that conforms to the shape of the wrist of the human body.

Optionally, the method further includes: displaying means for displaying the deformation information of each part of the determined skin surface.

The invention also provides a pulse detection method, comprising:

Deformation of different parts of the skin surface by the sensing device into changes in the luminous intensity corresponding to different parts of the surface of the sensing device;

Collecting the illuminance intensity of the sensing device to obtain light field distribution information of the sensing device;

And according to the light field distribution information, the corresponding relationship between the previously established luminous intensity and the deformation information is invoked, and the deformation information of each part of the corresponding skin surface is determined according to the current luminous intensity.

Optionally, the step of establishing the correspondence between the illuminance intensity and the deformation information is:

Applying a preset pressure to the flexible luminescent material;

And acquiring deformation information and luminous intensity of the flexible luminescent material under the preset pressure;

Corresponding relationship between the luminous intensity and the deformation information is determined according to the acquired plurality of sets of deformation information and the luminous intensity.

Optionally, it also includes:

The deformation information of each part of the obtained skin surface is determined.

The pulse detecting device and method provided by the invention converts the deformation of different parts of the skin surface into the change of the luminous intensity corresponding to different parts of the surface of the sensing device by the sensing device contacting the skin surface; the collecting device is opposite to the sensing device The illuminance intensity is collected to obtain the light field distribution information of the sensing device; according to the light field distribution information, the corresponding relationship between the illuminating intensity and the deformation information is called, and the deformation information of each part of the corresponding skin surface is determined according to the current illuminating intensity. The pulse detecting device and method provided by the invention converts the deformation of the skin surface into the distributed light field intensity, and according to the characteristics of the material itself, the deformation of each part directly leads to different luminous intensity of the material, thereby greatly improving The spatial resolution of skin surface deformation detection. The use of high-resolution optical sensing technology captures the intensity of the light throughout the material, ultimately enabling high-resolution detection of skin surface deformation. This application is similar to the perception in TCM theory, so it only needs Do simple processing, can be used for further analysis of Chinese medicine theory, very practical.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are merely Some embodiments of the present invention may also be used to obtain other drawings based on these drawings without departing from the art.

1 is a structural block diagram of a specific embodiment of a pulse detecting device provided by the present invention;

2 is a schematic structural view of a light-emitting element in a pulse detecting device provided by the present invention;

FIG. 3 is a flowchart of a specific implementation manner of a pulse detection method according to an embodiment of the present invention.

detailed description

The present invention will be further described in detail below in conjunction with the drawings and embodiments. It is apparent that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

A block diagram of a specific embodiment of a pulse detecting device provided by the present invention is shown in FIG. 1 , and the device includes:

Sensing device 1, collecting device 2 and processor 3;

Wherein, the sensing device 1 is used for contacting with the surface of the skin to convert the deformation of different parts of the skin surface into changes in the luminous intensity corresponding to different parts of the surface of the sensing device 1;

The collecting device 2 is configured to collect the light intensity of the sensing device 1 and obtain the light field distribution information of the sensing device 1;

The processor 3 is configured to invoke a correspondence between the pre-established luminous intensity and the deformation information according to the light field distribution information, and determine corresponding parts of the skin surface according to the current luminous intensity. Deformation information.

It should be noted that the sensing device in the present application is a convenient carrying and wearing sensing device made of a flexible luminescent material. The sensing device has a corresponding power supply system to provide energy for illuminating the material, and specifically can be powered by a rechargeable battery, which can be conveniently carried.

More specifically, the luminescent material is the result of a research presented by the Shepherd team at Cornell University. This soft new luminescent material not only has sufficient ductility, but is also not damaged when stretched or kneaded, and is also capable of maintaining stable illumination under external force.

In the present application, a plurality of light emitting elements may constitute a light emitting array.

The light-emitting element is a sandwich structure element formed of a silicone resin, a polyacrylamide-lithium chloride hydrogel, and a zinc sulfide silicone resin, as shown in the schematic structural diagram of the light-emitting element in the pulse image detecting device provided by the present invention. Of course, the component may also include other materials, and is not limited to these three. The sandwich structure is only the most basic structure, and is not limited to a structure of only three layers.

Silicone is an insulating material that is both ductile and transparent, and the incorporation of zinc sulfide can also turn it into a light-emitting element that fluoresces under the action of an alternating electric field. The polyacrylamide-lithium chloride hydrogel forms a conductive interlayer that leaves a path for the application of voltage. By adjusting the luminescent composition, different luminescent colors can be obtained: copper with a mass fraction of 0.01% can be green, and with 0.1% copper, it appears blue; if 1% is blended Manganese will appear yellow.

In the embodiment of the invention, the sandwich interlayer can respond to external pressure and be reflected by light of different intensities. If you poke a flexible material with your finger, the harder you poke, the greater the local stretch, and the stronger the luminescence. This is because the overall thinning occurs when the material is stretched, and the pitch in the capacitor layer becomes small. When the voltage is kept constant, the electric field is increased, so the electroluminescence is also enhanced. Although the extension of the luminescent interlayer makes the density of zinc sulphide lower, the effect is relatively small, so the brightness will increase as the luminescent interlayer is stretched.

This material has two major features that are essential to the application of the pulse diagnosis system. The first feature is its elasticity, which enables it to closely fit the skin surface of the inch and other parts. This is very similar to the contact between the finger and the skin surface during the pulse diagnosis of TCM, so that the skin surface information can be obtained as much as possible. The second characteristic is that it can respond to its own deformation (or external pressure), and its own deformation is directly related to its luminous intensity. The material is adhered to the skin surface of the inch and the like, and the skin deforms as the pulse fluctuates, and the material also undergoes corresponding deformation. Eventually, the difference in the luminous intensity of the materials at different locations is caused.

The embodiment of the invention uses the material to make the sensing device, which can closely contact the surface of the skin, and transform the deformation of different parts of the skin surface into the change of the luminous intensity of different parts of the surface of the material. As a specific embodiment, the material may also be an elastic material, and the shape thereof may specifically adopt a cylindrical structure conforming to the shape of the wrist of the human body, and is smaller than the size of the wrist of the human body, so that in actual use, the material is transmitted. The sensing device can be placed against the surface of the user's skin to more accurately detect the user's pulse.

The acquisition device may specifically employ a camera for detecting the luminous intensity of the material and obtaining the light field distribution of the material using the high resolution of the vision system under current technical conditions.

The pulse detecting device in this embodiment may further include: a memory, wherein the memory stores a correspondence between the pre-established luminous intensity and deformation information, and the correspondence is established based on material properties of the flexible luminescent material.

The processor is specifically configured to: according to the light field information acquired by the camera probe, and according to the material characteristics, call the corresponding relationship between the light intensity and the deformation information, and calculate the deformation of the corresponding skin surface according to the current light intensity of the flexible light material. Information for analysis by software systems based on TCM theory.

The correspondence between the illuminance intensity and the deformation information can be obtained by experimental quantification in advance, for example, applying pressure to the flexible material, recording the deformation and illuminance generated at this time, and after collecting a large amount of data, establishing a correspondence including the illuminance intensity and the deformation information. The database of relationships. By calling the database, the corresponding deformation information can be determined according to the current luminous intensity, thereby transforming the deformation information that is difficult to measure into the light intensity information that is relatively easy to obtain.

Further, the embodiment of the present invention may further include: a display device configured to display deformation information of each part of the determined skin surface. Through such setting, the detected deformation information can be visually displayed in real time, which is convenient for the user to use.

The pulse detecting device provided by the invention contacts the surface of the skin through the sensing device, and transforms the deformation of different parts of the skin surface into the change of the luminous intensity corresponding to different parts of the surface of the sensing device; the luminous intensity of the collecting device to the sensing device The collection is performed to obtain the light field distribution information of the sensing device; according to the light field distribution information, the correspondence relationship between the previously established luminous intensity and the deformation information is invoked, and the deformation information of each part of the corresponding skin surface is determined according to the current luminous intensity. this invention The provided pulse detecting device converts the deformation of the skin surface into the intensity of the distributed light field, and according to the characteristics of the material itself, the deformation of each part directly leads to the difference in the luminous intensity of the material, thereby greatly improving the surface of the skin. The spatial resolution of deformation detection. The use of high-resolution optical sensing technology captures the intensity of the light throughout the material, ultimately enabling high-resolution detection of skin surface deformation. This application is similar to the perception method in TCM theory, so it only needs to be simply processed, and can be used for further analysis of TCM theory, which is very practical.

The pulse detection method provided by the embodiment of the present invention is described below. The pulse detection method described below and the pulse detection device described above can refer to each other.

FIG. 3 is a flowchart of a specific implementation manner of a pulse detection method according to an embodiment of the present invention. The method for detecting a pulse image according to FIG. 3 may specifically include:

Step S101: transforming deformations of different parts of the skin surface into changes in luminous intensity corresponding to different parts of the surface of the sensing device by the sensing device;

Step S102: collecting light intensity of the sensing device, and acquiring light field distribution information of the sensing device;

Step S103: According to the light field distribution information, the corresponding relationship between the previously established luminous intensity and the deformation information is invoked, and the deformation information of each part of the corresponding skin surface is determined according to the current luminous intensity.

On the basis of the above embodiments, in the pulse detection method provided by the present invention, the sensing device adopts a flexible luminescent material and is an illuminating array composed of a plurality of illuminating elements;

Among them, the light-emitting element is a sandwich structure element formed of a silicone resin, a polyacrylamide-lithium chloride hydrogel, and a zinc sulfide silicone resin. Of course, the component may also include other materials, and is not limited to these three. The sandwich structure is only the most basic structure, and is not limited to a structure of only three layers.

In this embodiment, the step of establishing a corresponding relationship between the illuminating intensity and the deformation information may be specifically: applying a preset pressure to the flexible luminescent material; acquiring deformation information and illuminating under the preset pressure of the flexible luminescent material Intensity; determining the correspondence between the luminous intensity and the deformation information according to the acquired plurality of sets of deformation information and the luminous intensity.

The correspondence between the illuminance intensity and the deformation information can be obtained by experimental quantification in advance, for example, applying pressure to the flexible material, recording the deformation and illuminance occurring at this time, and after collecting a large amount of data, establishing a correspondence relationship between the illuminance intensity and the deformation information. database. By calling the database, the corresponding deformation information can be determined according to the current luminous intensity, thereby transforming the deformation information that is difficult to measure into the light intensity information that is relatively easy to obtain.

Further, determining the deformation information of each part of the corresponding skin surface according to the current luminous intensity comprises:

Based on the material properties of the flexible luminescent material, the corresponding relationship between the illuminating intensity and the deformation information is invoked, and the deformation information of each portion of the corresponding skin surface is determined according to the current illuminating intensity of the flexible luminescent material.

Preferably, the embodiment of the present invention may further include: displaying the deformation information of each part of the determined skin surface. Through such setting, the detected deformation information can be visually displayed in real time, which is convenient for the user to use.

The pulse detection method provided by the invention contacts the surface of the skin by the sensing device, and transforms the deformation of different parts of the skin surface into the change of the luminous intensity corresponding to different parts of the surface of the sensing device; the luminous intensity of the collecting device to the sensing device The collection is performed to obtain the light field distribution information of the sensing device; according to the light field distribution information, the correspondence relationship between the previously established luminous intensity and the deformation information is invoked, and the deformation information of each part of the corresponding skin surface is determined according to the current luminous intensity.

The pulse detection method provided by the invention converts the deformation of the skin surface into the intensity of the distributed light field, and according to the characteristics of the material itself, the deformation of each part directly leads to the difference of the luminous intensity of the material, thereby greatly improving the Spatial resolution of skin surface deformation detection. Capture the intensity of luminescence throughout the material with today's rapidly evolving optical sensing technology. Due to the high level of integration of optical sensors, it is also capable of supporting very high spatial resolution detection. Combining the above two points, the high-resolution detection of the skin surface deformation is finally completed, and the detection data is similar to the perception mode in the theory of traditional Chinese medicine. Therefore, it is only necessary to do simple processing, and the theory of traditional Chinese medicine can be used. Line analysis.

The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same or similar parts of the respective embodiments may be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

A person skilled in the art will further appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software or a combination of both, in order to clearly illustrate the hardware and software. Interchangeability, the composition and steps of the various examples have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

The steps of a method or algorithm described in connection with the embodiments disclosed herein can be implemented directly in hardware, a software module executed by a processor, or a combination of both. The software module can be placed in random access memory (RAM), memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or technical field. Any other form of storage medium known.

The pulse detecting device and method provided by the present invention are described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, and the description of the above embodiments is only to assist in understanding the method of the present invention and its core idea. It should be noted that those skilled in the art can make various modifications and changes to the present invention without departing from the spirit and scope of the invention.

Claims

A pulse detecting device, comprising:

a sensing device, a collecting device, and a processor;

Wherein the sensing device is used to contact the surface of the skin to convert the deformation of different parts of the skin surface into changes in the luminous intensity corresponding to different parts of the surface of the sensing device;

The collecting device is configured to collect the illuminating intensity of the sensing device, and obtain light field distribution information of the sensing device;

The processor is configured to invoke a correspondence between the pre-established luminous intensity and the deformation information according to the light field distribution information, and determine deformation information of each part of the corresponding skin surface according to the current luminous intensity.
A pulse detecting device according to claim 1, wherein

The sensing device employs a flexible luminescent material and is a luminescent array composed of a plurality of illuminating elements.
The pulse detecting device according to claim 2, further comprising: a memory, wherein the memory stores a correspondence between the pre-established luminous intensity and deformation information, wherein the correspondence is based on the flexible luminescent material Established by material properties.
A pulse detecting device according to claim 2, wherein said flexible luminescent material is an elastic material.
A pulse detecting apparatus according to claim 2, wherein said light emitting element is a sandwich structure member formed of a silicone resin, a polyacrylamide-lithium chloride hydrogel, and a zinc sulfide silicone resin.
A pulse detecting device according to any one of claims 1 to 5, characterized in that

The acquisition device is a camera.
A pulse detecting apparatus according to any one of claims 1 to 5, wherein said sensing means supplies power using a battery.
A pulse detecting apparatus according to any one of claims 1 to 5, wherein said sensing means employs a cylindrical structure adapted to the shape of a wrist of a human body.
The pulse detecting apparatus according to any one of claims 1 to 5, further comprising display means for displaying the deformation information of the determined portions of the skin surface.
A pulse detection method, comprising:

Deformation of different parts of the skin surface by the sensing device into changes in the luminous intensity corresponding to different parts of the surface of the sensing device;

Collecting the illuminance intensity of the sensing device to obtain light field distribution information of the sensing device;

And according to the light field distribution information, the corresponding relationship between the previously established luminous intensity and the deformation information is invoked, and the deformation information of each part of the corresponding skin surface is determined according to the current luminous intensity.
A pulse detecting method according to claim 10, wherein said sensing means employs a flexible luminescent material and is an illuminating array composed of a plurality of illuminating elements.
The pulse detecting method according to claim 11, wherein said light-emitting element is a sandwich structure member formed of a silicone resin, a polyacrylamide-lithium chloride hydrogel, and a zinc sulfide silicone resin.
The pulse image detecting method according to claim 11, wherein the step of establishing the correspondence between the luminous intensity and the deformation information is:

Applying a preset pressure to the flexible luminescent material;

And acquiring deformation information and luminous intensity of the flexible luminescent material under the preset pressure;

Corresponding relationship between the luminous intensity and the deformation information is determined according to the acquired plurality of sets of deformation information and the luminous intensity.
The method of detecting a pulse image according to any one of claims 10 to 13, further comprising:

The deformation information of each part of the obtained skin surface is determined.