CN112423655B

CN112423655B - Biosignal measurement to accommodate multiple use postures

Info

Publication number: CN112423655B
Application number: CN201880094617.0A
Authority: CN
Inventors: 杨荣广; 李彦; 孙士友; 席毅; 楼鑫欣
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-11-10
Filing date: 2018-11-10
Publication date: 2022-09-23
Anticipated expiration: 2038-11-10
Also published as: CN112423655A; WO2020093406A1

Abstract

An electromechanical device (100,600,900,1100,1200,1300,1400) having a biosignal measurement function and a corresponding biosignal measurement unit (1500), the electromechanical device (100,600,900,1100,1200,1300,1400) including at least two signal acquisition sections (110,610,910,1110,1410,1510), the at least two signal acquisition sections (110,610,910,1110,1410,1510) emitting probe signals (640), receiving first signals (650) emitted from a subject to be measured based on the probe signals (640), and converting the first signals (650) into second signals different from the first signals (650), the at least two signal acquisition sections (110,610,910,1110,1410,1510) being disposed on a first side and a second side opposite to the first side of the electromechanical device (100,600,900,1100,1200,1300,1400). The electromechanical device (100,600,900,1100,1200,1300,1400) is adaptable to a variety of use postures for bio-signal measurements.

Description

Biosignal measurement to accommodate multiple use postures

Technical Field

The present application relates to the field of electromechanics, and more particularly, to an electromechanical device having a biosignal measurement function, a biosignal measurement unit, and a biosignal measurement method.

Background

Modern people pay more and more attention to health level, and biological signals such as blood oxygen and heart rate are expected to be detected frequently. However, current testing is also typically tied to medical institutions or specialized equipment, which incurs high time costs and economic burdens. Although some portable devices have a measuring sheet integrated thereon, a user is required to make a special measuring gesture for detection.

Disclosure of Invention

The embodiment of the application provides an electromechanical device with biological signal measurement function, can make the user when daily use or dress this electromechanical device, need not make specially to measure the gesture and can make biological signal detect.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, there is provided an electromechanical device having a biosignal measurement function, the electromechanical device including:

at least two signal acquisition parts that emit a probe signal, receive a first signal emitted from the object to be measured based on the probe signal, and convert the first signal into a second signal different from the first signal,

wherein at least one of the at least two signal acquisition parts is arranged on a first side of the electromechanical device and at least one of the at least two signal acquisition parts is arranged on a second side of the electromechanical device opposite to the first side. The first side and the second side are generally capable of contacting the skin of a user when the electromechanical device is normally used.

In some possible implementations, the at least two signal acquisitions are photoplethysmography (PPG) sensors.

In some possible implementations, the electromechanical device is a flat electronic device with a screen, the first side is a first side frame of the screen, the second side is a second side frame of the screen opposite to the first side frame, at least one of the at least two signal acquisition parts is disposed in a middle-lower portion of the first side frame, and at least one of the at least two signal acquisition parts is disposed in a middle-lower portion of the second side frame. In some possible implementations, at least one of the at least two signal acquisition parts is disposed at a middle upper portion of the first bezel, and at least one of the at least two signal acquisition parts is disposed at a middle upper portion of the first bezel. For example, the electromechanical device is a mobile phone, the first side frame and the second side frame are respectively a left frame and a right frame when the mobile phone is vertically placed, and the middle-lower portion refers to an area on the frames near the bottom surface. The bottom surface is the lower end surface when the mobile phone is vertically placed, and the bottom surface is usually provided with a sound collecting hole. For example, if the electromechanical device is a tablet computer, the first side and the second side may be left and right side frames when the tablet computer is vertically placed, or may be left and right side frames when the tablet computer is horizontally placed.

In some possible implementations, the electromechanical device is a wearable electronic device with a screen, the wearable electronic device including a wrist band including a first edge connected to a first side of the screen and a second edge connected to a second side of the screen, the first side of the screen being opposite the second side of the screen, at least one of the at least two signal acquisition portions being disposed on the first edge, the at least one of the at least two signal acquisition portions being disposed on the second edge. The signal acquisition portions on the first and second edges are oriented in the same direction as the inner surface of the wristband. For example, if the wearable device is a wristwatch, the front surface of the signal acquisition unit, that is, the detection signal emission surface faces the skin of the arm of the user when the wristwatch is worn on the wrist of the user.

In some possible implementations, the electromechanical device further includes:

at least one measured object detecting part arranged at a position on the first side and the second side where the at least two signal acquiring parts are not arranged,

at least one signal transmission channel through which the at least two signal acquisition portions transmit the probe signal to the position of the object detection portion where the object is detected and to the object when at least one of the at least one object detection portion detects that the object is present in the preset measurable range, and through which the first signal transmitted by the object to the object detection portion is received. The bio-signal of the electromechanical device can thus be measured in a plurality of user positions of use of the electromechanical device.

In some possible implementations, the housing of the electromechanical device has a light-transmissive portion at the at least one measured object detecting portion location. The light-transmitting portion is, for example, a light-transmitting plastic layer, a glass layer, or a void.

In some possible implementations, each of the at least two signal acquisition sections has:

a light emitting part which emits light of a specific wavelength as a detection signal, for example a Light Emitting Diode (LED) or a laser, which may be a laser diode, for example;

a light receiving unit that receives a first signal returned by the object to be measured based on the detection signal and converts the first signal into a second signal different from the first signal. For example, the light receiving unit is a photodiode that converts reflected or transmitted light attenuated by absorption by the object to be measured into an electrical signal.

In some possible implementations, the at least one measured object detecting portion includes a touch sensor and/or a pressure sensor. The touch sensor may sense contact of the user's skin, and the pressure sensor may sense external pressure.

In some possible implementations, the at least one signal transmission channel includes an optical fiber or a diffractive network.

In some possible implementations, the electromechanical device includes at least one signal acquisition control section (e.g., Analog Front End, AFE) that performs one or more of the following operations:

driving the light emitting part, e.g. adjusting the light intensity, controlling the light emitting switch and controlling the light emitting timing,

generating a third signal by pre-processing the second signal output by the light receiving section, the pre-processing including, for example, noise removal, amplification, removal of a DC component, and analog-to-digital conversion,

wherein each of the signal acquisition control sections controls at least one of the at least two signal acquisition sections. For example, it is possible to provide one signal acquisition control section for each signal acquisition section, have one signal acquisition control section shared by all signal acquisition control sections, one signal acquisition control section shared by signal acquisition control sections arranged on the same side, one signal acquisition control section shared by signal acquisition control sections arranged on the upper half of the apparatus and one signal acquisition control section shared by signal acquisition control sections arranged on the lower half of the apparatus, and so on.

In some possible implementations, the signal acquisition control section compares the third signal with a preset intensity threshold and truncates the third signal below the preset intensity threshold.

In some possible implementations, the electromechanical device includes at least one signal analysis portion that receives the third signal, performs a time domain and/or frequency domain analysis on the third signal to derive a fourth signal. The fourth signal is, for example, heart rate, blood oxygen saturation, body water content, psychological stress, fatigue, respiratory training, and blood pressure of the subject, and may also be an indication of a measurement failure for a particular physiological parameter.

In some possible implementations, the electromechanical device includes flexible electrical connections that are electrically connected with the at least two signal acquisition portions, respectively. In some possible implementations, the flexible electrical connection may also electrically connect the at least two signal acquisition portions with the at least one signal analysis portion. In some possible implementations, the flexible electrical connection directly electrically connects the signal acquisition control portion with the at least one signal analysis portion. In some possible implementations, the flexible electrical connection electrically connects the at least two signal acquisition portions with the at least one signal acquisition control portion, and electrically connects the at least one signal acquisition control portion with the at least one signal analysis portion. The use of flexible electrical connections makes the bio-signal measurement module flexible extensible. For example, the signal acquisition sections may be laid out on the electromechanical device so that the user can always be measured in the usual posture change regardless of where the signal acquisition sections are located, and the flexible electrical connection section may be flexibly connected thereto. The Flexible electrical connection portion is made of a Flexible material and is capable of conducting an electrical signal, including, for example, a Flexible Printed Circuit (FPC) and a Flexible cable, such as a coaxial cable.

In some possible implementations, the electromechanical device includes a Board-to-Board Connectors (BTB) that connect the flexible electrical connections with the signal analysis portion.

In some possible implementations, the electromechanical apparatus includes a communication section that transmits the third signal to another device, and the other device is configured to receive the third signal and perform a time domain and/or frequency domain analysis on the third signal to obtain a fourth signal. The fourth signal is, for example, heart rate, blood oxygen saturation, body water content, psychological stress, fatigue, respiratory training, and blood pressure of the subject, and may also be an indication of a measurement failure for a particular physiological parameter. In some possible implementations, the electromechanical device includes flexible electrical connections that are electrically connected with the at least two signal acquisition portions, respectively. The flexible electrical connection may also electrically connect the at least two signal acquisition portions with the communication portion. In some possible implementations, the flexible electrical connection directly electrically connects the signal acquisition control portion with the communication portion. In some possible implementations, the flexible electrical connection electrically connects the at least two signal acquisition portions with the signal acquisition control portion and electrically connects the signal acquisition control portion with the communication portion. The communication unit is connected to a cloud server, for example, to acquire a biological signal analysis service, so that the service contents can be flexibly expanded without changing the existing configuration of the electromechanical device, and thus a biological signal measurement plan can be flexibly designed in terms of time, parameter type, detection level, and the like, according to the health needs of the subject individual. The communication unit is connected in communication with another electromechanical device, for example, which has a corresponding evaluation function.

In some possible implementations, the electromechanical device receives, via the communication portion, an analysis report including the fourth signal. For example, the analysis report includes a comparison of the fourth signal with a health criterion, a health recommendation made to the subject based on the comparison, and the like.

In some possible implementations, the light emitting portion includes a lens provided with a surface curvature and an internal texture, the lens being disposed furthest downstream in a light emitting optical path of the light emitting portion. The internal texture is for example a fresnel texture. For example, the lens can perform the functions of light transmission and light collection.

In some possible implementations, the light receiving portion includes a lens provided with a surface curvature and an internal texture, the lens being disposed furthest upstream in a light receiving path of the light receiving portion. The internal texture is for example a fresnel texture. For example, the lens can perform the functions of light transmission and light collection.

In some possible implementations, the light emitting portion emits red light, infrared light, green light, and/or yellow-green light as the detection signal.

In some possible implementations, red light and infrared light are used as detection signals, and the blood oxygen saturation of the object to be measured is derived as a fourth signal.

In some possible implementations, infrared light or green light is used as the detection signal, and the heart rate of the measured object is derived as the fourth signal.

In some possible implementations, infrared light is used as the detection signal, and the water content of the measured object is derived as the fourth signal.

In some possible implementations, infrared light with a wavelength of 1400nm-1600nm is used as the detection signal, and the water content of the measured object is derived as the fourth signal. The wavelength of the infrared light is, for example, 1450 nm. In other possible implementations, infrared light with a wavelength of 1900nm is used as the detection signal, and the water content of the object to be measured is derived as the fourth signal.

In some possible implementations, when the water content is lower than the preset threshold, the subject is reminded to take in water, and the reminding mode includes: vibrating; voice prompt; displaying a reminding picture; and pushing health knowledge, hydration plan and/or hydration product information about the body water content.

In some possible implementations, the signal analysis section performs weight assignment and weight calculation on the third signal according to the strength of the signal. For example, the input with strong signal is used as main information, the input with weak signal is used as auxiliary information, and the main and auxiliary combination can provide more comprehensive and stable signals. For example, signals with the strength below a threshold value can be cut off, so that the interference and the computational complexity are reduced, and the measurement speed is increased.

In some possible implementations, the electromechanical device includes an alarm portion connected to the at least two signal acquisition portions, wherein the alarm portion issues an alarm on condition that a set number of the signal acquisition portions do not obtain the first signal for a set period of time. In some possible implementations, the alarm includes a location of the signal acquisition portion where the first signal is not obtained.

In a second aspect, there is provided a biosignal measurement unit, comprising:

at least two signal acquisition parts which emit detection signals, receive a first signal emitted from the object to be measured based on the detection signals, and convert the first signal into a second signal different from the first signal,

-flexible electrical connections electrically connected with the at least two signal acquisition portions, respectively.

In some possible implementations, the at least two signal acquisitions are PPG sensors.

In some possible implementations, the bio-signal measurement unit further includes:

at least one measured object detecting part that detects whether the measured object is present in a preset measurable range,

at least one signal transmission channel through which the at least two signal acquisition portions transmit the probe signal to the position of the object detection portion where the object is detected and to the object when at least one of the at least one object detection portion detects that the object is present in the preset measurable range, and through which the first signal transmitted by the object to the object detection portion is received. The bio-signal of the carrier can thereby be measured by the bio-signal measuring unit in a plurality of user positions of use of the carrier.

In some possible implementations, the biosignal measurement unit has a light-transmissive housing at the location of the at least one measured object detector. The light-transmitting housing is, for example, a light-transmitting plastic layer.

a light receiving unit that receives a first signal returned by the object to be measured based on the detection signal and converts it into a second signal different from the first signal. For example, the light receiving unit is a photodiode that converts reflected or transmitted light attenuated by absorption by the object to be measured into an electrical signal.

In some possible implementations, the measured object detecting portion includes a touch sensor and/or a pressure sensor. The touch sensor may sense a touch of a user, and the pressure sensor may sense an external pressure.

In some possible implementations, the signal transmission channel includes an optical fiber or a diffractive network.

In some possible implementations, the bio-signal measurement unit includes at least one signal acquisition control section (e.g., AFE) that performs the following operations:

generating a third signal by pre-processing the second signal output by the light receiving portion, the pre-processing including, for example, de-noising, amplifying, removing a DC component and analog-to-digital conversion,

wherein each of the signal acquisition control parts controls at least one of the at least two signal acquisition parts. For example, it is possible to provide one signal acquisition control section for each signal acquisition section, have all signal acquisition control sections share one signal acquisition control section, have signal acquisition control sections arranged on the same side share one signal acquisition control section, have signal acquisition control sections arranged on the upper half of the apparatus share one signal acquisition control section and signal acquisition control sections arranged on the lower half of the apparatus share one signal acquisition control section, and so on.

In some possible implementations, the bio-signal measurement unit includes at least one signal analysis section that receives the third signal, performs a time domain and/or frequency domain analysis on the third signal to derive a fourth signal. The fourth signal is, for example, heart rate, blood oxygen saturation, body water content, psychological stress, fatigue, respiratory training, and blood pressure of the subject, and may also be an indication of a measurement failure for a particular physiological parameter.

In some possible implementations, the bio-signal measurement unit includes flexible electrical connection portions electrically connected with the at least two signal acquisition portions, respectively. The flexible electrical connection may also electrically connect the at least two signal acquisition portions with the at least one signal analysis portion. In some possible implementations, the flexible electrical connection directly electrically connects the signal acquisition control portion with the at least one signal analysis portion. In some possible implementations, the flexible electrical connection electrically connects the at least two signal acquisition portions with the at least one signal acquisition control portion, and electrically connects the at least one signal acquisition control portion with the at least one signal analysis portion. The use of flexible electrical connections makes the bio-signal measurement module flexible extensible. For example, the types of the carriers are different, and the positions on which the user often touches when in use are also different, and the signal acquisition portions may be laid out on the carriers so that the user can always be measured in the usual posture change, and the flexible electrical connection portion may be flexibly connected thereto regardless of where the signal acquisition portions are located. The flexible electrical connection is made of a flexible material and is capable of conducting electrical signals, including, for example, flexible circuit boards and flexible cables, such as coaxial cables.

In some possible implementations, the bio-signal measurement unit includes a board-to-board connector connecting the flexible electrical connection with the at least one signal analysis portion.

In some possible implementations, the bio-signal measurement unit includes a communication section that transmits the third signal to another device that receives and performs a time domain and/or frequency domain analysis on the third signal to derive a fourth signal. The fourth signal is, for example, heart rate, blood oxygen saturation, body water content, psychological stress, fatigue, respiratory training, and blood pressure of the subject, and may also be an indication of a measurement failure for a particular physiological parameter. In some possible implementations, the bio-signal measurement unit includes flexible electrical connection portions electrically connected with the at least two signal acquisition portions, respectively. The flexible electrical connection may also electrically connect the at least two signal acquisition portions with the communication portion. In some possible implementations, the flexible electrical connection directly electrically connects the signal acquisition control portion with the communication portion. In some possible implementations, the flexible electrical connection electrically connects the at least two signal acquisition portions with the signal acquisition control portion and electrically connects the signal acquisition control portion with the communication portion. The communication unit is connected to a cloud server, for example, to acquire a biological signal analysis service, so that the service contents can be flexibly expanded without changing the existing configuration of the electromechanical device, and thus a biological signal measurement plan can be flexibly designed in terms of time, parameter type, detection level, and the like, according to the health needs of the subject individual. The communication unit is connected in communication with another electromechanical device, for example, which has a corresponding evaluation function.

In some possible implementations, the bio-signal measurement unit receives, via the communication section, an analysis report including the fourth signal. For example, the analysis report includes a comparison of the fourth signal with a health criterion, a health recommendation made to the subject based on the comparison, and the like.

In some possible implementations, infrared light or green light is used as the detection signal, and the heart rate of the object to be measured is derived as the fourth signal.

In some possible implementations, infrared light with a wavelength of 1400nm to 1600nm is used as the detection signal, and the water content of the measured object is derived as the fourth signal. The wavelength of the infrared light is, for example, 1450nm or 1900 nm. In other possible implementations, infrared light with a wavelength of 1900nm is used as the detection signal, and the water content of the object to be measured is derived as the fourth signal.

In some possible implementations, the signal analysis section performs weight assignment and weight calculation on a third signal obtained based on the first signal obtained by the at least two signal acquisition sections according to the strength of the signal. For example, the input with strong signal is used as main information, the input with weak signal is used as auxiliary information, and the main and auxiliary combination can provide more comprehensive and stable signals. For example, signals with strength below a threshold value can be discarded, so that interference and computational complexity are reduced, and the measurement speed is increased.

In some possible implementations, the bio-signal measurement unit includes an alarm portion connected to the at least two signal acquisition portions, wherein the alarm portion issues an alarm if a set number of the signal acquisition portions do not obtain the first signal for a set period of time. In some possible implementations, the alarm includes a location of the signal acquisition portion where the first signal is not obtained.

In a third aspect, there is provided a method of operating an electromechanical device having a biosignal measurement function according to the first aspect of the present invention,

the operation method comprises the following steps:

-driving at least two signal acquisition parts arranged on a first side and a second side of the electromechanical device to emit detection signals, receiving a first signal emitted from the object under test based on the detection signals, and converting the first signal into a second signal different from the first signal.

In some possible implementations, the method of operation includes:

when at least one of the at least one measured object detecting portion of the electro-mechanical device detects that the measured object is present in the predetermined measurable range, the at least two signal acquiring portions transmit the detection signal to the position of the measured object detecting portion detecting the measured object and to the measured object through the signal transmitting channel, and receive the first signal of the measured object to the measured object detecting portion through the signal transmitting channel. The bio-signal of the electromechanical device can thus be measured in a plurality of user positions of use of the electromechanical device.

In some possible implementations, the method of operation includes:

-emitting light of a specific wavelength as a detection signal by the light emitting sections of the at least two signal acquisition sections;

receiving a first signal returned by the object to be measured based on the detection signal by the light receiving parts of the at least two signal acquiring parts, and converting the first signal into a second signal different from the first signal. For example, the reflected or transmitted light attenuated by absorption by the object to be measured is converted into an electrical signal.

In some possible implementations, the method of operation includes: the touch of the object to be measured is sensed by a touch sensor of the object to be measured detecting part, and/or the external pressure is sensed by a pressure sensor of the object to be measured detecting part.

In some possible implementations, the method of operation includes: by at least one signal acquisition control section (e.g. AFE)

pre-processing the second signal output by the light receiving section to generate a third signal, the pre-processing including, for example, noise removal, amplification, removal of a DC component, and analog-to-digital conversion,

wherein each of the signal acquisition control parts controls at least one of the at least two signal acquisition parts.

In some possible implementations, the method of operation includes: the third signal is compared with a preset intensity threshold by the signal acquisition control section and the third signal lower than the preset intensity threshold is dropped.

In some possible implementations, the method of operation includes: the third signal is received by at least one signal analysis section, and a time domain and/or frequency domain analysis is performed on the third signal to obtain a fourth signal. The fourth signal is, for example, heart rate, blood oxygen saturation, body water content, psychological stress, fatigue, respiratory training, and blood pressure of the subject, and may also be an indication of a measurement failure for a particular physiological parameter.

In some possible implementations, the method of operation includes: and electrically connecting the flexible electric connection part with the at least two signal acquisition parts respectively. The operation method may further include: the at least two signal acquisition portions are electrically connected with the at least one signal analysis portion via a flexible electrical connection portion. In some possible implementations, the signal acquisition control portion is electrically connected directly with the at least one signal analysis portion via the flexible electrical connection portion. In some possible implementations, the at least two signal acquisition portions are electrically connected with the at least one signal acquisition control portion via the flexible electrical connection portion, and the at least one signal acquisition control portion is electrically connected with the at least one signal analysis portion.

In some possible implementations, the method of operation includes: the flexible electrical connection portion is connected to the signal analysis portion via a board-to-board connector.

In some possible implementations, the method of operation includes: the third signal is transmitted to other equipment through the communication part, and the other equipment receives the third signal and analyzes the third signal in a time domain and/or a frequency domain to obtain a fourth signal. The fourth signal is, for example, heart rate, blood oxygen saturation, body water content, psychological stress, fatigue, respiratory training, and blood pressure of the subject, and may also be an indication of a measurement failure for a particular physiological parameter. In some possible implementations, the method of operation includes: and electrically connecting the flexible electric connection part with the at least two signal acquisition parts respectively. The operation method may further include: the at least two signal acquisition parts are electrically connected with the communication part via the flexible electrical connection part. In some possible implementations, the signal acquisition control portion and the communication portion are directly electrically connected via the flexible electrical connection portion. In some possible implementations, the at least two signal acquisition portions are electrically connected with the signal acquisition control portion via the flexible electrical connection portion, and the signal acquisition control portion is electrically connected with the communication portion. The communication unit is connected to a cloud server, for example, to acquire a biological signal analysis service, so that the service contents can be flexibly expanded without changing the existing configuration of the electromechanical device, and thus a biological signal measurement plan can be flexibly designed in terms of time, parameter type, detection level, and the like, according to the health needs of the subject individual. The communication unit is connected in communication with, for example, another electromechanical device having a corresponding evaluation function.

In some possible implementations, the method of operation includes: an analysis report including the fourth signal is received via the communication section. For example, the analysis report includes a comparison of the fourth signal with a health criterion, a health recommendation made to the subject based on the comparison, and the like.

In some possible implementations, the method of operation includes: red light, infrared light, green light and/or yellowish green light is emitted as a detection signal via the light emitting section.

In some possible implementations, the method of operation includes: red light and infrared light are taken as detection signals, and the blood oxygen saturation of the measured object is obtained as a fourth signal.

In some possible implementations, the method of operation includes: infrared light or green light is used as a detection signal, and the heart rate of the measured object is obtained as a fourth signal.

In some possible implementations, the method of operation includes: infrared light is used as a detection signal, and the water content of the measured object is obtained as a fourth signal. The wavelength of the infrared light is, for example, 1400nm to 1600nm, for example 1450 nm. The wavelength of the infrared light is, for example, 1900 nm.

In some possible implementations, the method of operation includes: the third signal is subjected to weight distribution and weight calculation according to the strength of the signal via at least one signal analysis unit. For example, the input with strong signal is used as main information, the input with weak signal is used as auxiliary information, and the main and auxiliary combination can provide more comprehensive and stable signals. For example, signals with strength below a threshold value can be discarded, so that interference and computational complexity are reduced, and the measurement speed is increased.

In some possible implementations, the method of operation includes: and under the condition that the preset number of signal acquisition parts cannot acquire the first signals in the preset time length, giving an alarm through the alarm part. In some possible implementations, the alarm includes a location of the signal acquisition portion where the first signal is not obtained.

In a fourth aspect, there is provided a method of manufacturing an electromechanical device having a biosignal measurement function according to the first aspect of the present invention, including:

providing at least two signal acquisition parts for emitting a probe signal, receiving a first signal emitted from the object to be measured based on the probe signal, and converting the first signal into a second signal different from the first signal,

-arranging the at least two signal acquisition portions on both sides of the electromechanical device.

In a fifth aspect, a biosignal measurement unit mounting method according to the second aspect of the present invention includes:

-mounting the bio signal measuring unit to a carrier, wherein at least two signal acquisition parts are arranged on both sides of the carrier.

In a sixth aspect, a computer storage medium is provided, which includes computer instructions, and when the computer instructions are executed on an electronic device, the electronic device is caused to execute the execution method in any possible implementation manner of the third aspect.

In a seventh aspect, an embodiment of the present application provides a computer program product, which, when running on a computer, causes the computer to execute the running method in any possible implementation manner of the third aspect.

These and other aspects of the present application will be more readily apparent from the following description of the embodiment(s).

Drawings

Fig. 1A shows a schematic structural diagram of an electromechanical device provided in an embodiment of the present application.

Fig. 1B illustrates a usage scenario of the electromechanical device illustrated in fig. 1A according to an embodiment of the present application.

Fig. 1C illustrates a usage scenario of the electromechanical device illustrated in fig. 1A according to an embodiment of the present application.

Fig. 2 shows a schematic structural diagram of an electromechanical device provided in an embodiment of the present application.

Fig. 3 shows a schematic diagram of waveforms of light absorption by arterial blood in an artery provided by an embodiment of the present application.

Fig. 4 shows absorptance of water in human skin to light of different wavelengths according to an embodiment of the present application.

Fig. 5 shows a display interface for moisture content measurement provided by an embodiment of the present application.

Fig. 6A and 6B are schematic structural diagrams illustrating an electromechanical device provided in an embodiment of the present application.

Fig. 7 shows a schematic configuration diagram of the signal transmission path 630 in this embodiment.

Fig. 8 illustrates the operating principle of the electromechanical device shown in fig. 6A and 6B.

Fig. 9 shows a schematic structural diagram of an electromechanical device provided by an embodiment of the present application.

Fig. 10 shows a schematic structural diagram of a lens 920 provided in an embodiment of the present application.

Fig. 11 shows a schematic structural diagram of an electromechanical device provided by an embodiment of the present application.

Fig. 12 shows a schematic structural diagram of an electromechanical device provided by an embodiment of the present application.

Fig. 13 shows a schematic structural diagram of an electromechanical device provided by an embodiment of the present application.

Fig. 14A shows a schematic structural diagram of an electromechanical device provided by an embodiment of the present application.

Fig. 14B shows a schematic structural diagram of an electromechanical device provided by an embodiment of the present application.

Fig. 14C shows a schematic structural diagram of an electromechanical device provided by an embodiment of the present application.

Fig. 15A shows a schematic structural diagram of a biosignal measurement unit provided by an embodiment of the present application.

Fig. 15B shows a schematic structural diagram of a bio-signal measurement unit provided by an embodiment of the present application.

Fig. 16 shows a flowchart of an operating method provided by an embodiment of the present application for operating an electromechanical device having a biosignal measurement function according to the present invention.

Fig. 17 illustrates a manufacturing method provided in an embodiment of the present application for manufacturing an electromechanical device having a biosignal measurement function according to the present invention.

Fig. 18 shows a mounting method provided by an embodiment of the present application for mounting the biosignal measurement unit according to the present invention.

Detailed Description

For ease of understanding, the examples are given in part for illustration of concepts related to embodiments of the present application. As follows:

the photoelectric plethysmography can be used for detecting the human body movement heart rate. The PPG sensor is used for detecting the difference of the reflected light intensity after the reflected light is absorbed by the blood and the tissue of a human body, tracing the change of the bleeding volume in the cardiac cycle, and calculating parameters such as the heart rate from the obtained pulse waveform.

A board-to-board connector for connecting components of circuit boards.

A Photodiode (PD) sensor is used for a watch or a bracelet and is an important component of a PPG sensor.

The Lens (Lens) can realize the functions of light transmission and light condensation by matching with the design of the radian of the surface of the Lens and the inner Fresnel texture, the optical efficiency is improved, and more accurate measurement precision is obtained.

The flexible printed circuit board is made of polyimide or polyester film as base material and has high reliability and excellent performance. The wiring structure has the characteristics of high wiring density, light weight, thin thickness and good bending property.

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Wherein in the description of the embodiments of the present application, "/" indicates an inclusive meaning, for example, a/B may indicate a or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality" means two or more.

In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or as implying any indication of the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present application, "a plurality" means two or more unless otherwise specified.

The technical solution of the embodiments of the present application is applicable to any electro-mechanical device having a bio-signal measuring function operable by a human body, for example, a smart phone, a portable phone, a game machine, a television, a display unit, a steering wheel/joystick for vehicles (cars, subways, trains, ships, aircrafts, etc.), a notebook computer, a laptop computer, a tablet Personal Computer (PC), a Personal Media Player (PMP) machine, a Personal Digital Assistant (PDA), a home health monitor, and the like. The electronic device may be implemented as a portable communication terminal having a wireless communication function. Further, the electromechanical device may be a flexible device or a flexible display device. And may be referred to as a terminal, a portable terminal, a mobile terminal, a communication terminal, a portable mobile terminal, a display device, or the like, on the condition that the electromechanical device has a communication function. The use posture also includes a posture when the user transports the electromechanical device with his body, such as walking with a mobile phone, walking with a notebook computer, etc. As long as the gesture is in normal contact with the electromechanical device, the use gesture referred to in this application is considered.

The terminal-type electromechanical device may communicate with an external electronic apparatus such as a server or the like, or perform an operation by interworking with the external electronic apparatus. The network may be, but is not limited to, a mobile or cellular communication network, a Local Area Network (LAN), a Wireless Local Area Network (WLAN), a Wide Area Network (WAN), the internet, a Small Area Network (SAN), and the like.

First, an electromechanical device to which the embodiment of the present application is applied will be described with reference to a cellular phone 100 shown in fig. 1A as an example. The middle and lower parts of the two side edges of the mobile phone are respectively provided with a signal acquisition part 110. The two sides are respectively a left side frame and a right side frame when the mobile phone is vertically arranged. When the user uses the mobile phone 100, the skin of the fingers or palms of the user usually contacts with at least one signal acquisition part 110 in the normal use posture, the detection signals sent by the at least two signal acquisition parts will pass through the skin of the user contacting with the at least two signal acquisition parts, the detection signals are absorbed and attenuated by human tissues and then reflected or projected outside the body, and part of the reflected or projected signals are received by the signal acquisition part 110 and converted into second signals which are easy to be transmitted and processed by electromechanical devices. The signal acquisition unit 110 is, for example, a PPG sensor. The electromechanical device 100 may also be implemented as other flat-panel electronic devices, such as a tablet computer. The handset 100 may include, for example, one or more of the following components: a processing component, a memory, a power component, a multimedia component, an audio component, an input/output (I/O) interface, a sensor component, and a communication component.

FIG. 1B illustrates an exemplary usage scenario of the handset 100 of FIG. 1A. The posture in which the user holds the cellular phone 100 with one hand is a normal use posture in which the cellular phone 100 is used, and is also a regular use posture. In this posture, the signal acquisition units 110 on both sides of the mobile phone 100 are in contact with the skin of the user. Therefore, the user can measure the biological signal without making a measurement gesture intentionally in the process of using the mobile phone 100 normally. The bio-signal can also be monitored for long periods of time without interrupting the normal use of the handset 100 by the user or engaging in other activities while holding the handset 100.

Wearable products on the current market have some physiology detection function such as heart rate detection, blood pressure detection, breathing and detect like intelligent wrist-watch, intelligent bracelet etc. these physiology detection functions have been familiar with and accepted by masses. However, the wearable product is limited to objective reasons such as small size, narrow screen, and continuous range, and generally the wearable product needs to be used with the smartphone, for example, to measure the real-time heart rate of the user in a specific scene (playing games, watching movies), currently, the heart rate of the user can only be detected by the wearable product, but cannot be directly detected by the smartphone, the smartphone can only detect the usage scene mode of the user, and it is significant to record the dynamic heart rate change in the scene; in addition, because the screen of the wearable product is very small, certain mobile healthy applications such as sharing at cardiac moments, great risk in real heart and control games can only give play to better experience by detecting the change of physiological indexes in real time through a mobile phone and presenting APP.

The mobile phone 100 according to the embodiment of the present invention can measure the bio-signal of the user during the normal use of the mobile phone, and can realize real-time measurement, long-time monitoring, large-screen display of physiological index changes, and the like without increasing the burden on the user.

Fig. 1C shows an exemplary usage scenario of the handset 100 of fig. a. The user often holds the cellular phone 100 with both hands while playing a game or watching a video program, for example, which is also a normal use posture of the cellular phone 100. In this posture, one of the signal acquisition sections 110 on both sides of the cellular phone 100 is in contact with the skin of the user, so that the biological signal of the user can be measured.

Fig. 2 shows a schematic structural diagram of an electromechanical device provided in an embodiment of the present application. The electromechanical device 100 includes signal acquisition sections 110 provided on both side edges. In the case where the user normally uses the electromechanical device, there is a local skin in contact with the signal acquisition section 110.

The light emitting portion 111 of the signal acquiring portion 110 includes, for example, a light emitting LED that emits light of a specific wavelength as a detection signal under the drive of the signal acquiring control portion 120 of the electromechanical device 100, the light is absorbed and attenuated by the user, and then reflected from the skin of the user, and a part of the reflected light is acquired as a first signal by the light receiving portion 112 of the signal acquiring portion 110.

The light receiving section 112 includes a photosensor, for example, a photodiode array, converts the reflected light into an electrical signal as a second signal, and outputs the second signal to the signal acquisition control section 120. The photodiode array is provided, for example, in the form of a photovoltaic film.

The signal acquisition control unit 120 includes, for example, an AFE (Active Front End). The second signal, i.e. the electrical signal in this embodiment, is typically weak, e.g. with a peak value of only about 0.6V, and contains noise due to ambient light interference, user movement, etc., and can therefore be subjected to signal processing including filtering and amplification to enhance the useful signal. In addition, in the case of a non-pulsating part of human tissue, i.e., a part where blood is pulsating, the absorption of light by bones, tissues, cells, etc. is almost unchanged without a large change in the measurement site, and arterial blood changes the absorption of light due to pulsation. The electrical signal can therefore be divided into an AC component representing arterial blood changes and a DC component representing other non-pulsatile tissue. The signal acquisition control unit 120 may filter out the DC component and only retain the AC component to more clearly represent the change in arterial blood. This technique is called photoplethysmography PPG. The AC component may also be analog-to-digital converted by the signal acquisition control 120 for subsequent transmission and analysis. In one embodiment, the signal acquisition control portion may further compare the third signal with a preset intensity threshold and truncate the third signal below the preset intensity threshold. The signal preprocessed by the signal acquisition control part 120 is transmitted to the signal analysis part 130 as a third signal.

For example, it is possible to provide one signal acquisition control section for each signal acquisition section, have one signal acquisition control section shared by all signal acquisition control sections, one signal acquisition control section shared by signal acquisition control sections arranged on the same side, one signal acquisition control section shared by signal acquisition control sections arranged on the upper half of the apparatus and one signal acquisition control section shared by signal acquisition control sections arranged on the lower half of the apparatus, and so on.

The signal analysis section 130 may perform time domain and/or frequency domain analysis on the third signal to derive a fourth signal. The fourth signal is, for example, heart rate, blood oxygen saturation, body water content, psychological stress, fatigue, respiratory training, and blood pressure of the subject, and may also be an indication of a measurement failure for a particular physiological parameter.

Taking blood oxygen detection as an example, which is a new field of mobile health, the blood oxygen saturation (SpO2) refers to the percentage of hemoglobin that carries oxygen, i.e. the ratio of the oxygen-carrying hemoglobin to all hemoglobin, multiplied by 100.

Blood oxygen detection is also of great significance clinically, and primary or secondary polycythemia, blood concentration and oxygen poisoning may exist when the blood oxygen saturation is increased, so that hyperbaric oxygen treatment is required. When the blood oxygen saturation is lowered, hypoxia-related hypoxia (such as emphysema, pulmonary congestion and the like), circulatory hypoxia, tissue hypoxia, anemic hypoxia (such as anemia, carboxyhemoglobinemia and the like), stasis hypoxia (such as cardiac insufficiency compensation phase), toxic hypoxia in tissues (such as alcoholism and cyanide poisoning) and the like may exist.

Fig. 3 shows a waveform diagram of light absorption by arterial blood in an artery provided by an embodiment of the present application. It can be seen that it represents the cardiac cycle. For example, when the light emitting unit 111 emits green light (wavelength range is 500nm to 560nm, for example, 525nm), the signal analyzing unit 130 can calculate the heart rate from the number of peaks in the pulsation cycle by the time domain analysis method. The signal analysis unit 130 may also use a frequency domain analysis method, for example, FFT conversion of the AC signal to obtain a frequency domain map, and further directly obtain the heart rate. The green light is suitable for measuring the heart rate under the condition that the tested object user moves. Heart rate can also be measured using infrared light.

The electromechanical device 100 may also perform a measurement of blood oxygen saturation based on, for example, the Lambert-Beer (Beer-Lambert) law and the difference in light absorption characteristics of reduced hemoglobin (Hb) and oxygenated hemoglobin (HbO2) in blood. Specifically, the light receiving portion 111 emits red light λ 1 (wavelength range 600-. The signal analyzer 130 calculates the blood oxygen saturation level of the measurement subject as follows:

wherein epsilon: absorption coefficient C: the content L: penetration depth Iin: input light Io: output light

I _max ^λ1 ＝I _in ^λ1 *exp(-ε _s C _s L _s )

I _min ^λ1 ＝I _in ^λ1 *exp(-ε _s C _s L _s -(ε _Hb ^λ1 C _Hb ^λ1 +ε _HbO2 ^λ1 C _HbO2 ^λ1 )L’)

I _max ^λ2 ＝I _in ^λ2 *exp(-ε _s C _s L _s )

I _min ^λ2 ＝I _in ^λ2 *exp(-ε _s C _s L _s -(ε _Hb ^λ2 C _Hb ^λ2 +ε _HbO2 ^λ2 C _HbO2 ^λ2 )L”)

Imax is the output intensity of the pulsatile arterial blood at its minimum, Imin is the maximum worth of output intensity of the pulsatile arterial blood, epscsls is the absorption of all static parts non-pulsatile parts of the blood, such as bones, tissues, cells, etc., (epshb λ 1CHb λ 1+ epsilono 2 λ 1CHbO2 λ 1) L 'is the absorption of the pulsatile arterial blood, L' and L "are the penetration depths of different wavelengths in the tissue. The difference value between Imax and Imin is an alternating current component signal obtained by testing, and Imax is a direct current component signal

An empirical formula of the blood oxygen saturation is obtained by combining equations of two wavelengths:

SpO2＝C _Hbo2 /(C _Hbo2 +C _Hb )＝(ε _Hb ^λ1 -ε _Hb ^λ2 *R)/(ε _Hb ^λ1 -ε _HbO2 ^λ1 -(ε _Hb ^λ2 -ε _HbO2 ^λ2 )*R)

wherein R is log (1-I) _ac ^λ1 /I _dc ^λ1 )/log(1-I _ac ^λ2 /I _dc ^λ2 )≈I _ac ^λ1 /I _dc ^λ1 /I _ac ^λ2 /I _dc ^λ2

Since absorption in tissue is also affected by scattering, SO2 cannot be calculated directly from R by the formula, usually using empirical formulas. The empirical formula SpO2 (100-a R (a given by a big data fit) is typically used.

Heart rate measurements may be combined with blood oxygen content measurements to provide an effective indication/monitoring of the health condition of the user.

Taking the water content measurement as an example, the electromechanical device 100 can remind the user of drinking water reasonably and increasing the morbidity of cerebral thrombosis and coronary heart disease due to water shortage in the body through the body water content detection; urinary calculus and urinary tract infection are easy to form; the skin is easy to dry, wrinkles are increased, and aging of the human body is accelerated; can cause the toxin in the body to be discharged in time, and can cause the acidosis symptoms of abdominal distension, dizziness and the like. Therefore, scientific water supplement is needed in time, a small amount of water needs to be drunk for many times, and water needs to be drunk regularly, so that the user does not need to think about drinking water only when the user is thirsty.

Fig. 4 shows absorptance of water in human skin to light of different wavelengths according to an embodiment of the present application. Water molecules vibrate when they encounter a particular energy band. The hydroxide bonds in water molecules may stretch, contract, or otherwise change morphology. External energy is required to cause these vibrations. The degree of absorption of the oxyhydrogen bond is different for different bands. It can be seen that a distinct absorption peak is formed around 1450 nm. The electromechanical device 100 may emit infrared light (wavelength range 1400-1600nm, for example 1450nm) as a detection signal by the light emitting section 111. The wavelength of the infrared light is, for example, 1900 nm. The energy in the detection signal is absorbed by the hydrogen-oxygen bond of the moisture in the skin tissue of the tested object. Along with the change of the water content of the human body, the absorption rate of the water in the skin tissue to the detection signal changes. Thereby an indication of the moisture content of the subject's skin can be derived. The skin moisture content is then compared to, for example, a specific standard of total body moisture content, and an indication of the total body moisture content can be derived.

Fig. 5 shows a display interface for moisture content measurement provided by an embodiment of the present application. It shows the moisture content profile of the user on the time axis during the 24 hours of the day, marked as "your today moisture content trend". The lower part of the interface is a health prompt given according to the absolute value and the change condition of the water content, such as "comprehensively see you that the water is insufficient, and then please note".

The electromechanical device 100 may also be used for example for measuring psychological stress, fatigue and blood pressure of the user for respiratory training, but may of course also provide a failure indication as a fourth signal when the measurement of a particular physiological parameter fails.

In one embodiment, the signal analysis section 130 performs weight assignment and weight calculation on a third signal obtained based on the first signal obtained by the at least two signal acquisition sections 110 according to the signal strength. For example, the input with strong signal is used as main information, the input with weak signal is used as auxiliary information, and the main and auxiliary combination can provide more comprehensive and stable signals. For example, signals with strength below a threshold value can be discarded, so that interference and computational complexity are reduced, and the measurement speed is increased.

In one embodiment, the electromechanical device 100 may further include an alarm portion connected to the at least two signal acquisition portions, wherein the alarm portion issues an alarm on condition that a set number of the signal acquisition portions do not obtain the first signal for a set period of time. In some possible implementations, the alarm includes a location of the signal acquisition portion where the first signal is not obtained.

Fig. 6A and 6B are schematic structural diagrams illustrating an electromechanical device provided in an embodiment of the present application. The electromechanical device is implemented in this embodiment as a cell phone 600. The cellular phone 600 includes signal acquisition sections 610 disposed at lower portions on both sides of the edge thereof. Each signal acquisition unit 610 is divided into a light emitting unit 611 that emits a probe signal 640 and a light receiving unit 612 that receives a first signal 650 reflected after absorption and attenuation by the object to be measured. The light emitting portion 611 and the light receiving portion 612 are separated by, for example, an optical isolation portion to avoid mutual optical interference. The cellular phone 600 further includes a measured object detecting part 620 disposed at an upper portion of both side edges thereof for detecting a contact of a measured object thereto, for which the measured object detecting part 620 includes, for example, a touch sensor or a pressure sensor. And the object detecting part 620 has a light transmitting surface at a side facing the outside of the cellular phone. The handset 600 also includes two left and right signal transmission channels 630. The left signal transmission path 630 connects the signal acquisition part 610 disposed on the left edge of the cellular phone 600 and the object detection part 620. The right signal transmission path 630 connects the signal acquisition part 610 disposed on the right edge of the cellular phone 600 and the object detection part 620. In this embodiment, the signal transmission channel 630 is illustratively implemented as an optical fiber.

Those skilled in the art should select an appropriate manner to implement the signal transmission channel 630 according to the nature of the detection signal 640, the installation space, and other factors. For example, signal transmission channel 630 may be designed as a diffractive neural network that causes an optical signal to be transmitted through the network in a diffractive manner. Fig. 7 shows a part of the signal transmission path 630 in this embodiment. It comprises a plurality of 3D printed polymer layers. The surface of each polymer layer is structured to be uneven, including a certain number of pixels, for example, several tens of thousands, to diffract the signal to be transmitted, including the first signal 650 emitted from the object to be measured and the detection signal 640 emitted from the signal acquisition portion 610. The polymer layer may also be fabricated using other techniques such as photolithography.

Fig. 8 illustrates the operating principle of the electromechanical device shown in fig. 6A and 6B. For example, when the object detection unit 620 detects the approach of the user, it notifies the signal acquisition control unit 660 of the mobile phone 600 of the event, and the signal acquisition control unit 660 immediately drives the light emitting unit 611 of the signal acquisition unit 610 to emit the detection signal 640. The probe signal is transmitted to the object detection part 620 via the signal transmission channel 630, and is continuously transmitted to the user via the transparent surface of the object detection part 620. The detection signal 640 is emitted as reflected light in the form of first signal 650 after absorption attenuation by the body tissue of the user. The first signal 650 is transmitted to the light receiving portion 612 of the signal acquisition portion 610 via the signal transmission channel 630. The light receiving portion converts the first signal 650 into a second signal through photoelectric conversion. The second signal is passed to the signal acquisition control unit 660 for preprocessing, including, for example, smoothing filtering, analog-to-digital conversion, high-pass filtering, and amplification. The second signal is transferred, for example, through a flexible circuit board or a coaxial cable. The signal acquisition control unit 660 outputs the preprocessed signal as a third signal to the signal analysis unit 670. The signal analysis section 670 may perform a specific analysis, such as a heart rate analysis, a blood oxygen analysis, a water content analysis, etc., on the third signal according to the user's setting. The signal analysis unit 670 may select and perform a specific type of analysis according to a specific program built in the cellular phone 600. The signal analysis part 670 may also actively push an analysis result suitable for the body condition of the user, for example, remind the user to drink water when the body water content is lower than a threshold, and the reminding manner includes, for example, displaying a reminding picture on a screen, vibrating, and voice prompting, and pushing health knowledge about the body water content, a plan for reasonably supplementing water, a product capable of effectively supplementing water, and the like via the screen. The signal analysis section 670 may also provide a specific combination of analyses depending on the specific type of analysis selected by the user. For example, when the user selects moisture content analysis, the signal analysis section 130 may provide a combination of heart rate analysis and moisture content analysis, as heart rate is a valid reference value for both analyzing and interpreting moisture content. For example, when the user selects blood oxygen content analysis, the signal analysis section 670 may provide a combination of heart rate analysis and water content analysis. The post-analysis signal analysis section 670 outputs a fourth signal indicative of the physiological parameter, and the post-analysis signal analysis section 670 may also output a health report including the fourth signal.

In another embodiment not shown in the drawings, the handset 600 may also transmit the third signal to another device, such as a cloud server or another electromechanical device, via its communication interface, and the other device analyzes the third signal and then sends the fourth signal to the communication interface of the handset 600. Thus, the mobile phone 600 can also omit a biological signal analysis unit, provide low-cost and low-cost, and conveniently change, upgrade or expand the biological analysis function.

Fig. 9 shows a schematic structural diagram of an electromechanical device provided by an embodiment of the present application. The electromechanical device 900 is provided with signal acquisition units 910 at lower portions of both side edges. As can be seen in the partial enlarged view, the signal acquisition part 910 includes a light emitting part 911, which is implemented in this embodiment as an LED matrix that emits red, infrared, and green light. The signal acquisition section 910 further includes a light receiving section 912, which is implemented as a photosensor in this embodiment. Illustratively, the light receiving part may be provided in the form of a thin film, i.e., an electro-optical thin film, which facilitates the signal acquisition part 910 to form a compact structure and provides a good touch experience for a user. The signal acquisition unit 910 is covered with a lens 920. The lens 920 is disposed in the light-emitting optical path most downstream of the light-emitting portion 911 and in the light-receiving optical path most upstream of the light-receiving portion 912.

Fig. 10 shows a schematic structural diagram of a lens 920 provided in an embodiment of the present application. The upper sub-diagram of fig. 10 shows a cross-section of the lens 920. The body of lens 920 is optically transparent. At its inner portion, near the upper surface, a texture 9201 is formed in a manner of fitting the surface curvature of the lens for light collection and light transmission to improve optical efficiency, thereby enabling the electromechanical device 100 to obtain more accurate measurement accuracy. The texture 9201 is implemented in this embodiment as a fresnel texture formed by a plurality of concentric circles of varying sizes inscribed on the lens. The fresnel pattern appears as a series of saw-tooth like grooves when viewed in cross-section. The lower subfigure of fig. 10 shows a top view of lens 920 with texture 9201. A plurality of concentric circles constituting the fresnel pattern can be seen. The incident light or the emergent light is converged by the texture 9201 and then continuously transmitted. Meanwhile, the Fresnel patterns can also partially eliminate spherical aberration.

Returning to the enlarged partial view on the right side of fig. 9. One end of the flexible electrical connection 930 of the electromechanical device 900 is connected to each of the signal acquisition sections 910 and connects them to the board-to-board connector 940. The board-to-board connector connects the signal acquisition portion 910 to subsequent signal processing components, such as to a signal acquisition control portion and/or a signal analysis portion of the electromechanical device 900. The flexible electrical connection 930 is implemented in this embodiment as a flexible circuit board. The flexible electrical connection portion 930 can flexibly connect the signal acquisition portion 910, which is disposed at any position of the electromechanical device 100, to a subsequent signal processing portion. If the electromechanical device has a curved or irregularly shaped housing, the flexible electrical connection 930 can still conform to the shape of the housing, thereby connecting the signal acquisition portion 910 with the signal processing portion at low installation cost. The use of flexible electrical connections 930 makes the bio-signal measurement module flexible. For example, the types of the electromechanical devices are different, and the positions where the user frequently touches the electromechanical devices when in use are also different, the signal acquisition sections may be laid out on the electromechanical devices so that the user can always be measured in the usual posture change, and the flexible electrical connection sections 930 may be flexibly connected thereto regardless of where the signal acquisition sections are located. The flexible electrical connection 930 is made of a flexible material and can conduct electrical signals and can be implemented as a flexible cable, such as a coaxial cable, and any other suitable flexible electrical connection.

Fig. 11 shows a schematic structural diagram of an electromechanical device provided by an embodiment of the present application. The electromechanical device 1100 is implemented as a cellular phone, which includes four signal acquisition sections 1110 arranged at the upper and lower portions of both side edges. The two sides are a left side frame and a right side frame when the mobile phone is vertically placed. The flexible electrical connection portions 1120 of the electromechanical device 100 are connected with the respective signal obtaining portions 1110, and connect these signal obtaining portions 1110 to the board-to-board connector 1130, thereby connecting to, for example, a subsequent signal processing portion, such as a circuit board with a signal processing function, via the board-to-board connector 1130. In this embodiment, there will be more than two signal acquisitions 1110 covered by the user's skin, regardless of whether the user is holding the electromechanical device 1100 in a lateral or vertical grip. Therefore, at least two paths of first signals are collected, and weight distribution and weighted calculation can be carried out on the multiple paths of signals according to the strength and the weakness and the signal-to-noise ratio in subsequent signal processing, so that the detection precision is improved. For example, the input with strong signal is used as main information, the input with weak signal is used as auxiliary information, and the main and auxiliary combination can provide more comprehensive and stable signals. For example, signals with the strength below a threshold value can be cut off, so that the interference and the computational complexity are reduced, and the measurement speed is increased. The weight assignment and the weight calculation are performed, for example, by the bioanalytical unit on a plurality of third signals obtained based on the plurality of first signals. The electromechanical device 1100 may also be implemented as other tablet-shaped electronic devices, such as a tablet computer.

Fig. 12 shows a schematic structural diagram of an electromechanical device provided by an embodiment of the present application. The electromechanical device 1200 is implemented as a flexible screen mobile phone in this embodiment, the mobile phone body is provided in a reel shape, and the flexible screen 1220 can be wound around the mobile phone body and pulled out when the screen needs to be enlarged, so that the mobile phone can be manufactured in a smaller size, for example, the size of a pen. In this embodiment, the holding portions 1230 are respectively disposed on the left and right edges of the mobile phone reel when the mobile phone reel is placed horizontally, and the signal acquisition portions 1110 are respectively disposed on the upper and lower end surfaces of the holding portions 1230. The bottom drawing of FIG. 12 illustrates a common scenario in which a user is using the electromechanical device 1200, holding the left grip 1230 with the user's hand and pulling the flexible screen out of the scroll with the other hand, thereby enlarging the screen. The signal acquiring portion 1110 provided on the grip portion 1230 is covered with fingers thereof so that a biosignal can be acquired thereby. The user can hold one grip portion 1230 each with both hands without enlarging the screen, so that the skin of his hand can cover all four signal acquiring sections 1110.

Fig. 13 shows a schematic structural diagram of an electromechanical device provided by an embodiment of the present application. Electromechanical device 1300 is implemented in this embodiment as a steering wheel. One signal acquisition unit 1110 is provided on each of both sides of the electromechanical device 1300. When the user normally uses the steering wheel, both sides of the steering wheel are held by both hands, and the skin of the hand contacts the signal acquisition sections 1110 disposed on both sides, so that a bio-signal can be acquired while driving the vehicle to which the steering wheel belongs, thereby detecting a health condition. The signal acquisition part 1110 may be connected to an in-vehicle entertainment system of an automobile so as to display the health status via a screen and a voice function of the in-vehicle entertainment system.

Fig. 14A shows a schematic structural diagram of an electromechanical device provided by an embodiment of the present application. The electromechanical device is implemented in this embodiment as a watch 1400. The watch includes a watch body 1420 and watch wristbands 1430 disposed on either side of the watch body. Watch body 1420 includes a watch body front 1421 and a watch body back 1422. The signal acquisition units 1410 are disposed on two opposite sides of the wrist band of the watch. The light emitting surface and the light incident surface of the signal acquisition unit 1410 face the wrist of the user. The signal acquisition unit 1410 is connected to the watch body 1420 by a flexible electrical connection. The subsequent signal processing part is arranged in the watch body 1420. Among them, since the watch space and the computing power are limited, the watch 1400 may not include the biological analysis section under the condition that the cellular phone 1400 has the communication section. The watch 1400 sends the preprocessed bio-signal to another device, such as a server, via the communication unit for analysis, and receives the returned physiological parameter or a health report containing the physiological parameter via the communication unit. In one embodiment, watch 1400 includes flexible electrical connections that electrically connect at least signal acquisition 1410 with a communication section. In one embodiment, signal acquisition control 1410 is directly electrically connected to communication using a flexible electrical connection. In one embodiment, a flexible electrical connection electrically connects signal acquisition 1410 with a signal acquisition control, and electrically connects the signal acquisition control with a communication. The communication unit is connected to a cloud server, for example, to acquire a biological signal analysis service, so that the service contents can be flexibly expanded without changing the existing configuration of the electromechanical device, and thus a biological signal measurement plan can be flexibly designed in terms of time, parameter type, detection level, and the like, according to the health needs of the subject individual. The communication unit is connected in communication with another electromechanical device, for example, which has a corresponding evaluation function. The electromechanical device receives an analysis report including the fourth signal via the communication section. For example, the analysis report includes a comparison of the fourth signal with a health criterion, a health recommendation made to the subject based on the comparison, and the like.

Fig. 14B shows a schematic structural diagram of an electromechanical device provided by an embodiment of the present application. The electromechanical device is embodied as a watch 1400 comprising a watch body 1420 and watch wristbands 1430 disposed on either side of the watch body 1420. Watch body 1420 includes a watch body front 1421 and a watch body back 1422. In comparison with the wristwatch 1400 shown in fig. 14A, the signal acquisition section 1410 is also provided on the watch body 1420, so that the signal acquisition section 1410 can be more reliably ensured to be in contact with the skin of the user. And at least one path of input of the first signal is increased, so that the detection precision can be improved.

Fig. 14C shows a schematic structural diagram of an electromechanical device provided by an embodiment of the present application. The electromechanical device is embodied as a watch 1400 comprising a watch body 1420 and watch wristbands 1430 disposed on either side of the watch body 1420. Watch body 1420 includes a watch body front 1421 and a watch body back 1422. In comparison with the wristwatch 1400 shown in fig. 14A, the signal acquisition unit 1410 is also provided at the position of the wrist band buckle, so that the contact of the signal acquisition unit 1410 with the skin of the user can be ensured more reliably. And at least one path of input of the first signal is increased, so that the detection accuracy can be improved.

Fig. 15A shows a schematic structural diagram of a biosignal measurement unit provided by an embodiment of the present application. The biological signal measuring unit 1500 includes two signal acquiring sections 1510, a flexible electrical connection section 1540, a signal acquisition control section 1520, and a signal analyzing section 1530. The signal acquisition unit 1510 is, for example, a PPG sensor. In the usage state of the bio-signal measurement unit 1500, two signal acquisition sections 1510 thereof are mounted on a first side and a second side of the carrier opposite to the first side. In normal use of the carrier by a user of the carrier, the user often touches both sides by holding the carrier. The signal acquiring unit 1510 includes a light emitting unit 1511 and a light receiving unit 1512, wherein the light emitting unit 1511 can emit a detection signal, the detection signal is absorbed and attenuated by the body tissue of the object to be measured, the object to be measured reflects a first signal, and the light receiving unit 1512 receives the first signal and performs photoelectric conversion on the first signal. The light receiving part outputs the converted signal as a second signal, and the flexible electrical connection part 1540 transmits the second signal to the signal acquisition control part 1520. Since the flexible electrical connection portion 1540 can be flexibly adapted to the shape of the carrier, it is made possible to easily arrange the signal acquisition portion 1510 on both sides of the carrier of an arbitrary shape. The signal acquisition control unit 1520 may drive the signal acquisition unit 1510, for example, to control on/off of the signal acquisition unit, and control the light emission timing, intensity, and the like of the light emission unit 1511. The signal acquisition control section 1520 may also perform preprocessing on the received second signal, such as smoothing, amplification, analog-to-digital conversion, and removal of a direct current component. The signal acquisition control unit 1520 outputs the preprocessed signal as a third signal to the signal analysis unit 1530. The signal analysis unit 1530 analyzes the third signal and outputs a physiological parameter such as a heart rate, a blood oxygen content, and/or a body water content as a fourth signal. For example, if the carrier is a mobile phone, the fourth signal may be transmitted to the mobile phone CPU for being pushed to the user of the mobile phone, i.e. the object to be tested, via the screen display.

Fig. 15B shows a schematic structural diagram of a biosignal measurement unit provided by an embodiment of the present application. Compared to the exemplary biosignal measurement unit in fig. 15A, the biosignal measurement unit 1500 illustrated in fig. 15B further includes a measured object detecting portion 1550 and a signal transmitting channel 1560. In a use state of the biological signal measuring unit 1500, the object detecting part 1550 is arranged on a position different from the signal acquiring part 1510 on the carrier. The object detection unit 1550 and the signal acquisition unit 1510 are connected via a signal transmission path 1560, and the signal transmission path 1560 can transmit the probe signal from the light emitting unit 1511 to the object detection unit 1550 and transmit the probe signal to the object via a light-transmitting portion of the object detection unit 1550, which is directed toward the object. Alternatively, the first signal reflected by the object to be measured enters the object to be measured detection portion 1550 through the light-transmitting portion of the object to be measured detection portion 1550, and is then transmitted to the light receiving portion 1512 through the signal transmission path 1560. The light-transmitting portion may be formed of a void or a transparent plastic.

The bio-signal measurement unit 1500 in fig. 15A or 15B may further include a communication part that transmits the third signal preprocessed by the signal acquisition control part 1520 to another device for analysis via the communication part, and receives a physiological parameter or a health report resulting from the analysis via the communication part. So that the bio-signal measurement unit 1500 can omit the signal analysis part 1530. In another embodiment, the bio-signal measurement unit 1500 may also transmit the third signal to the controller of the carrier, which sends the third signal to another device for analysis through the communication part of the carrier, and receives the returned physiological parameter or health report via the communication part. Thus, the biological signal measuring unit 1500 can omit both the signal analyzing section 1530 and the communication section.

Fig. 16 shows a flowchart of an operating method provided by an embodiment of the present application for operating an electromechanical device having a biosignal measurement function according to the present invention. In the operating method 1600, at step 1610, at least two signal detection units arranged on a first side and a second side of the electromechanical device opposite to the first side are driven to emit detection signals. In step 1620, a first signal emitted from the object to be measured based on the detection signal is received. In step 1630, the first signal is converted to a second signal different from the first signal. For example, at least two signal acquisition units are driven to emit red light and infrared light as detection signals to the object to be measured, and the object to be measured absorbs and attenuates the detection signals and emits reflected light as a first signal. The electromechanical device is operated to receive the first signal, and a second signal is obtained after the first signal is subjected to photoelectric conversion. In embodiments of the present application, the second signal may also be transmitted via the electrical connection to a signal acquisition control for pre-processing, such as smoothing filtering, amplification, bandpass filtering, analog-to-digital conversion, removal of DC components, and the like. The signal acquisition control section may output the preprocessed signal as a third signal to the signal analysis section. The signal analysis section may analyze a specific physiological parameter, such as blood oxygen, heart rate, body water content, etc., from the third signal according to the setting of the electromechanical device, and output the specific physiological parameter as a fourth signal. The fourth signal can be sent to the tested object by the electromechanical device through screen display, sound playing, vibration and the like. The object under test is typically a user of the electromechanical device.

Fig. 17 illustrates a manufacturing method provided in an embodiment of the present application for manufacturing an electromechanical device having a biosignal measurement function according to the present invention. In the manufacturing method 1700, at step 1710, at least two signal acquiring sections for emitting a probe signal, receiving a first signal emitted from a test object based on the probe signal, and converting the first signal into a second signal different from the first signal are provided. The at least two signal acquisition portions are disposed on a first side and a second side of the electromechanical device opposite the first side at step 1720.

Fig. 18 shows a mounting method provided by an embodiment of the present application for mounting the biosignal measurement unit according to the present invention. In this method 1800, a biosignal measurement unit is mounted to a carrier in step 1810, wherein at least two signal acquisition parts are mounted on a first side and a second side of the carrier opposite to the first side.

Embodiments of the present application further provide a computer storage medium including computer instructions, which, when executed on an electronic device, cause the electronic device to perform the execution method in any possible implementation manner of the third aspect.

Embodiments of the present application further provide a computer program product, which when executed on a computer, causes the computer to execute the execution method in any possible implementation manner of the third aspect.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product may include one or more computer instructions. The procedures or functions described in accordance with the embodiments of the application are all or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that is integrated into one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic Disk), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and in actual implementation, there may be other divisions, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may also be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: u disk, removable hard disk, read only memory, random access memory, magnetic disk or optical disk, etc. for storing program codes.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An electromechanical device having a biosignal measurement function, the electromechanical device comprising:

at least two signal acquisition portions which emit detection signals, receive first signals emitted from the object to be measured on the basis of the detection signals, and convert the first signals into second signals different from the first signals, at least one of the at least two signal acquisition portions being arranged on a first side of the electromechanical device, at least one of the at least two signal acquisition portions being arranged on a second side of the electromechanical device opposite to the first side;

-at least one measured object detecting part arranged on the first side and the second side at a position where the at least two signal acquiring parts are not arranged;

at least one signal transmission channel through which the at least two signal acquisition parts transmit the probe signal to the position of the object detection part where the object is detected and to the object when at least one of the at least one object detection part detects that the object is present in a preset measurable range, and through which the at least one signal transmission channel receives the first signal of the object to the object detection part;

the detection signal is infrared light with the wavelength range of 1400-1600nm, and the electromechanical device obtains the water content of the measured object according to the second signal;

-a display screen for displaying the water content profile of the object under test.

2. The electromechanical device according to claim 1, wherein a housing of the electromechanical device has a light-transmitting portion at the position of the at least one detection portion of the object to be measured.

3. The electromechanical device according to claim 1, wherein the at least one measured object detecting portion includes a touch sensor and/or a pressure sensor.

4. The electromechanical device of claim 1, wherein the at least one signal transmission channel comprises an optical fiber or a diffractive network.

5. The electromechanical device according to any one of claims 1 to 4, characterized in that the at least two signal acquisitions are PPG sensors.

6. The electromechanical device according to any one of claims 1 to 4, wherein the electromechanical device is a flat electronic device having a screen, the first side is a first side frame of the screen, the second side is a second side frame of the screen opposite to the first side frame, at least one of the at least two signal acquisition portions is disposed in a middle-lower portion of the first side frame, and at least one of the at least two signal acquisition portions is disposed in a middle-lower portion of the second side frame.

7. The electromechanical device of claim 6, wherein at least one of the at least two signal acquisition parts is disposed in an upper-middle portion of the first side frame and at least one of the at least two signal acquisition parts is disposed in an upper-middle portion of the second side frame.

8. The electromechanical device according to any one of claims 1 to 4, wherein the electromechanical device is a wearable electronic device with a screen, the wearable electronic device comprising a wrist strap comprising a first edge connected to a first side of the screen and a second edge connected to a second side of the screen, the first side of the screen being opposite the second side of the screen, at least one of the at least two signal acquisition portions being arranged on the first edge and at least one of the at least two signal acquisition portions being arranged on the second edge.

9. The electromechanical device according to any one of claims 1 to 4, wherein each of the at least two signal acquisition sections has:

-a light emitting part emitting light of a specific wavelength as the detection signal;

-a light receiving part receiving the first signal returned by the object under test based on the detection signal, converting the first signal into a second signal different from the first signal.

10. The electromechanical device according to claim 9, characterized in that it comprises at least one signal acquisition control portion which performs the following operations:

-driving the light-emitting part, an

-generating a third signal by pre-processing the second signal output by the light receiving part,

wherein each of the signal acquisition control sections controls at least one of the at least two signal acquisition sections.

11. The electromechanical device according to claim 10, characterized in that said at least one signal acquisition control compares said third signal with a preset intensity threshold and truncates third signals below said preset intensity threshold.

12. The electromechanical device according to claim 10, characterized in that the electromechanical device comprises at least one signal analysis section, which receives the third signal, which is analyzed in time domain and/or frequency domain to derive a fourth signal.

13. The electromechanical device according to any one of claims 1 to 4, characterized in that the electromechanical device comprises flexible electrical connections which are electrically connected with the at least two signal acquisition portions, respectively.

14. The electromechanical device of claim 13, wherein the flexible electrical connection electrically connects the at least two signal acquisition portions with the at least one signal analysis portion.

15. The electromechanical device according to claim 10 or 11, wherein the electromechanical device comprises a communication portion, wherein the communication portion transmits the third signal to another device, wherein the other device is configured to receive the third signal and perform time domain and/or frequency domain analysis on the third signal to obtain a fourth signal, and wherein the electromechanical device receives the fourth signal through the communication portion.

16. The electromechanical device according to claim 12, characterized in that infrared light with a wavelength of 1400-1600nm is used as the detection signal and that the water content of the measured object is derived as the fourth signal.

17. The electromechanical device of claim 16, wherein the subject is alerted to ingest moisture when the moisture content is below a predetermined threshold by: vibrating; voice prompt; displaying a reminding picture; and pushing health knowledge, hydration plan and/or hydration product information about the body water content.

18. A biosignal measurement unit, the biosignal measurement unit comprising:

at least two signal acquisition sections that emit detection signals, receive first signals emitted from an object under test based on the detection signals, and convert the first signals into second signals different from the first signals;

-a flexible electrical connection electrically connected to the at least two signal acquisition portions, respectively;

-at least one measured object detecting part detecting whether the measured object is present in a preset measurable range;

at least one signal transmission channel through which the at least two signal acquisition parts transmit the probe signal to the position of the object detection part where the object is detected and to the object, and receive the first signal of the object to the object detection part through the signal transmission channel, when at least one of the at least one object detection part detects that the object is present in the preset measurable range;

wherein, the detection signal is infrared light with the wavelength range of 1400nm-1600nm, and the biological signal measuring unit obtains the water content of the measured object according to the second signal;

-a display for displaying a water content profile of the object under test.

19. The bio-signal measurement unit according to claim 18, wherein the at least two signal acquisitions are PPG sensors.

20. The biosignal measurement unit of claim 19, wherein the biosignal measurement unit has a light-transmissive housing at the location of the at least one measurand detection portion.

21. The biosignal measurement unit of any of claims 18-20, wherein each of the at least two signal acquisition sections has:

a light receiving portion that receives a first signal returned by the object to be measured based on the detection signal and converts the first signal into a second signal different from the first signal.

22. The biosignal measurement unit of any one of claims 18 to 20, wherein the at least one measured object detecting portion comprises a touch sensor and/or a pressure sensor.

23. A biosignal measurement unit as claimed in any one of claims 18 to 20 wherein said at least one signal transmission channel comprises an optical fibre or a diffractive network.

24. The bio-signal measurement unit according to claim 21, characterized in that the bio-signal measurement unit comprises at least one signal acquisition control section that performs the following operations:

-driving the light-emitting section,

generating a third signal by pre-processing a second signal output by the light receiving part,

25. The bio-signal measurement unit according to claim 24, wherein the at least one signal acquisition control section compares the third signal with a preset intensity threshold and truncates the third signal below the preset intensity threshold.

26. The bio-signal measurement unit according to claim 24 or 25, comprising at least one signal analysis section, wherein the at least one signal analysis section receives the third signal, performs a time domain and/or frequency domain analysis on the third signal to derive a fourth signal.

27. The bio-signal measurement unit according to claim 26, wherein the flexible electrical connection portion further electrically connects the at least two signal acquisition portions with the at least one signal analysis portion.

28. The bio-signal measurement unit according to claim 27, wherein the bio-signal measurement unit comprises a board-to-board connector connecting the flexible electrical connection portion with the at least one signal analysis portion.

29. A biosignal measurement unit according to claim 24 or 25, characterized in that the biosignal measurement unit comprises a communication section for transmitting the third signal to a further device for receiving the third signal and performing a time and/or frequency domain analysis of the third signal resulting in a fourth signal.

30. The bio-signal measurement unit according to claim 29, wherein the bio-signal measurement unit receives an analysis report including the fourth signal via the communication section.

31. The biosignal measurement unit of claim 21, wherein the light emitting portion comprises a lens provided with a surface curvature and an internal texture, the lens being disposed furthest downstream in a light emitting optical path of the light emitting portion.

32. The biosignal measurement unit of claim 21, wherein the light receiving portion comprises a lens provided with a surface curvature and an internal texture, the lens being disposed furthest upstream in a light receiving path of the light receiving portion.

33. The bio-signal measurement unit according to claim 26, wherein infrared light having a wavelength of 1400nm to 1600nm is used as the detection signal, and a water content of the measured object is derived as the fourth signal.

34. The biosignal measurement unit of claim 26, wherein the at least one signal analysis section performs weight assignment and weight calculation of the third signal according to signal strength.

35. The biosignal measurement unit of any of claims 18-20, wherein the biosignal measurement unit comprises an alarm portion connected to the at least two signal acquisition portions, wherein the alarm portion generates an alarm if a preset number of signal acquisition portions do not obtain the first signal for a preset length of time.