CN115191978B - Living body detection method, wearable device and computer readable storage medium - Google Patents
Living body detection method, wearable device and computer readable storage medium Download PDFInfo
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- CN115191978B CN115191978B CN202110384430.8A CN202110384430A CN115191978B CN 115191978 B CN115191978 B CN 115191978B CN 202110384430 A CN202110384430 A CN 202110384430A CN 115191978 B CN115191978 B CN 115191978B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
- A61B5/024—Measuring pulse rate or heart rate
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
- A61B5/024—Measuring pulse rate or heart rate
- A61B5/02416—Measuring pulse rate or heart rate using photoplethysmograph signals, e.g. generated by infrared radiation
- A61B5/02427—Details of sensor
- A61B5/02433—Details of sensor for infrared radiation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6802—Sensor mounted on worn items
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Abstract
The embodiment of the invention discloses a living body detection method, wearable equipment and a computer readable storage medium, which are used for determining that an object to be detected is a living body based on pulse waves detected by the wearable equipment through an infrared detection device, and reducing the using time of green light emitted by the wearable equipment so as to reduce the damage degree of the green light to eyes of a user. The method of the embodiment of the invention is applied to the wearable equipment, and can comprise the following steps: detecting, by an infrared detection device, a signal value received by the light sensor at a first frequency; when the signal value is larger than a preset signal threshold value, determining that an object to be detected exists; and if the pulse wave of the object to be detected is detected by the infrared detection device at a second frequency, determining the object to be detected as a living body, wherein the second frequency is larger than the first frequency.
Description
Technical Field
The present invention relates to the field of electronic device applications, and in particular, to a living body detection method, a wearable device, and a computer readable storage medium.
Background
As schools and parents pay more and more attention to the health status of children, a function based on photoplethysmography (PhotoPlethysmoGraph, PPG) has been added to many wearable devices (abbreviated as PPG function). The PPG function may detect pulse waves of a child using these wearable devices to obtain the heart rate of the child.
In the working state, the wearable device can continuously start green light to judge whether an object to be detected in front of the wearable device is a living body or not. Since the curiosity of a child stares at green light for a long time, the green light may cause a degree of injury to the eyes of the child.
Disclosure of Invention
The embodiment of the invention provides a living body detection method, wearable equipment and a computer readable storage medium, which are used for determining that an object to be detected is a living body based on pulse waves detected by the wearable equipment through an infrared detection device, and reducing the using time of green light emitted by the wearable equipment so as to reduce the damage degree of the green light to eyes of a user.
A first aspect of an embodiment of the present invention provides a living body detection method, which is applied to a wearable device, and the method may include:
detecting, by an infrared detection device, a signal value received by the light sensor at a first frequency;
When the signal value is larger than a preset signal threshold value, determining that an object to be detected exists;
If the pulse wave of the object to be detected is detected by the infrared detection device at a second frequency, the object to be detected is determined to be a living body, and the second frequency is larger than the first frequency.
Optionally, the detecting, by the infrared detecting device, that the pulse wave exists in the object to be detected at the second frequency includes: acquiring a first distance between the infrared detection device and the object to be detected; when the first distance is smaller than a preset distance threshold, the infrared detection device detects that the pulse wave exists in the object to be detected at a second frequency.
Optionally, the method further comprises: a first light emitter in the wearable device is activated and the light emitter is controlled to emit green light, and the heart rate of the living being is detected at a third frequency.
Optionally, the activating a first light emitter in the wearable device and controlling the light emitter to emit green light, detecting a heart rate of the living body at a third frequency, includes: after waiting for a preset time period, starting a first light emitter in the wearable device, and controlling the light emitter to emit green light so as to detect the heart rate of the living body; or, directly activating a first light emitter in the wearable device and controlling the light emitter to emit green light to periodically detect the heart rate of the living body according to the reflected signal of the green light.
Optionally, the activating a first light emitter in the wearable device and controlling the light emitter to emit green light, detecting a heart rate of the living body at a third frequency, includes: starting green light in the wearable equipment, and acquiring the beating times of pulse waves of the living body at a third frequency; and calculating the heart rate of the living body according to the beating times.
Optionally, the method further comprises: when the heart rate is within the preset heart rate range, recording and storing the heart rate; when the heart rate is out of the preset heart rate range, outputting first prompt information, wherein the first prompt information is related advice provided for a user according to the heart rate.
Optionally, the method further comprises: when the signal value is smaller than or equal to the preset signal threshold value, the wearable device is closed; or if the pulse wave of the object to be detected is not detected by the infrared detection device at the second frequency, determining the object to be detected as a non-living body.
A second aspect of an embodiment of the present invention provides a wearable device, which may include:
The detection module is used for detecting the signal value received by the optical sensor at a first frequency through the infrared detection device;
The determining module is used for determining that an object to be detected exists when the signal value is larger than a preset signal threshold value; if the pulse wave of the object to be detected is detected by the infrared detection device at a second frequency, the object to be detected is determined to be a living body, and the second frequency is larger than the first frequency.
Optionally, the acquiring module is configured to acquire a first distance between the infrared detecting device and the object to be detected;
the detection module is specifically configured to detect, by the infrared detection device, that a pulse wave exists in the object to be detected at a second frequency when the first distance is smaller than a preset distance threshold.
Optionally, the detection module is further configured to activate a first light emitter in the wearable device, control the light emitter to emit green light, and detect the heart rate of the living body at a third frequency.
Optionally, the detection module is specifically configured to start a first light emitter in the wearable device after waiting for a preset period of time, and control the light emitter to emit green light, so as to detect a heart rate of the living body; or, directly activating a first light emitter in the wearable device and controlling the light emitter to emit green light to periodically detect the heart rate of the living body according to the reflected signal of the green light.
Optionally, the acquiring module is specifically configured to start a first light emitter in the wearable device, control the light emitter to emit green light, and acquire the number of beats of the pulse wave of the living body at a third frequency;
the detection module is specifically used for calculating and obtaining the heart rate of the living body according to the beating times.
Optionally, the processing module is configured to record and store the heart rate when the heart rate is within a preset heart rate range; when the heart rate is out of the preset heart rate range, outputting first prompt information, wherein the first prompt information is related advice provided for a user according to the heart rate.
Optionally, the processing module is specifically configured to close the wearable device when the signal value is less than or equal to the preset signal threshold; or if the pulse wave of the object to be detected is not detected by the infrared detection device at the second frequency, determining the object to be detected as a non-living body.
A third aspect of an embodiment of the present invention provides a wearable device, which may include:
A memory storing executable program code;
and a processor coupled to the memory;
The processor invokes the executable program code stored in the memory, which when executed by the processor causes the processor to implement the method according to the first aspect of the embodiment of the present invention.
A fourth aspect of the embodiments of the present invention provides a computer readable storage medium having stored thereon executable program code which, when executed by a processor, implements a method according to the first aspect of the embodiments of the present invention.
A fifth aspect of an embodiment of the invention discloses a computer program product which, when run on a computer, causes the computer to perform any of the methods disclosed in the first aspect of the embodiment of the invention.
A sixth aspect of the embodiments of the present invention discloses an application publishing platform for publishing a computer program product, wherein the computer program product, when run on a computer, causes the computer to perform any of the methods disclosed in the first aspect of the embodiments of the present invention.
From the above technical solutions, the embodiment of the present invention has the following advantages:
In the embodiment of the invention, the signal value received by the optical sensor is detected at a first frequency through the infrared detection device; when the signal value is larger than a preset signal threshold value, determining that an object to be detected exists; and if the pulse wave of the object to be detected is detected by the infrared detection device at a second frequency, determining the object to be detected as a living body, wherein the second frequency is larger than the first frequency. The wearable device judges whether an object to be detected exists in front of the wearable device according to the signal value sent by the optical sensor; judging whether pulse waves exist on the object to be detected under the condition that the object to be detected is determined to exist; in the case where it is determined that a pulse wave exists on the object to be measured, the object to be measured is determined as a living body. The method enables the wearable device to detect pulse waves based on the infrared detection device so as to determine that the object to be detected is a living body, and reduces the using time of green light emitted by the wearable device so as to reduce the damage degree of the green light to eyes of a user.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments and the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings.
FIG. 1 is a schematic view showing an embodiment of a living body detection method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another embodiment of a living body detection method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another embodiment of a living body detection method according to an embodiment of the present invention;
FIG. 4a is a schematic diagram of one embodiment of a wearable device according to an embodiment of the present invention;
FIG. 4b is a schematic diagram of another embodiment of a wearable device according to an embodiment of the invention;
FIG. 4c is a schematic diagram of another embodiment of a wearable device according to an embodiment of the invention;
fig. 5 is a schematic diagram of another embodiment of a wearable device according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a living body detection method, wearable equipment and a computer readable storage medium, which are used for determining that an object to be detected is a living body based on pulse waves detected by the wearable equipment through an infrared detection device, and reducing the using time of green light emitted by the wearable equipment so as to reduce the damage degree of the green light to eyes of a user.
In order that those skilled in the art will better understand the present invention, reference will now be made to the accompanying drawings in which embodiments of the invention are illustrated, it being apparent that the embodiments described are only some, but not all, of the embodiments of the invention. Based on the embodiments of the present invention, it should be understood that the present invention is within the scope of protection.
It will be appreciated that the wearable device according to embodiments of the present invention may be worn directly on the user or may be integrated into a portable electronic device that is worn on the user's clothing or accessories. The wearable device is not only a hardware device, but also can realize powerful intelligent functions through software support and data interaction and cloud interaction, such as: the mobile phone terminal has the advantages of calculating function, positioning function and alarming function, and can be connected with mobile phones and various terminals. Wearable devices may include, but are not limited to, wrist-supported watch types (e.g., watches, wrist products, etc.), foot-supported shoes (e.g., shoes, socks, or other leg wear products), head-supported Glass types (e.g., glasses, helmets, headbands, etc.), and smart apparel, school bags, crutches, accessories, etc. in various non-mainstream product forms.
In the following, by way of example, the technical solution of the present invention is further described, as shown in fig. 1, which is a schematic diagram of an embodiment of a living body detection method in an embodiment of the present invention, where the method is applied to a wearable device, and the method may include:
101. the signal value received by the light sensor is detected at a first frequency by an infrared detection device.
It should be noted that, the optical sensor is used for receiving an infrared radiation signal value, the infrared radiation signal value is an analog signal value, and the infrared radiation signal value can be an infrared signal value reflected on an object to be measured; the light sensor converts the analog signal value to a digital signal value (simply referred to as a signal value), and transmits the digital signal value to the infrared detection device. The infrared detection means may be an infrared sensor which may receive the digital signal value transmitted by the light sensor. Alternatively, the digital signal value may be a current value in milliamperes (abbreviated as mA).
The infrared detection device and the light sensor are both located in the wearable device, and specific arrangement modes are not described in detail.
It will be appreciated that the unit of frequency is hertz (abbreviated: hz); the first frequency is located in a first preset frequency range, and the first preset frequency range is acquired by the wearable device in a large amount of first experimental data. The first preset frequency range may be configured by a first preset frequency threshold and a second preset frequency threshold, where the first preset frequency threshold is less than the second preset frequency threshold.
It should be noted that, the value of the first frequency needs to satisfy the low power consumption function of the wearable device, so when the wearable device is in a low-power state, the wearable device starts the low power consumption function, and the infrared detection device can still detect the signal value received by the light sensor at the first frequency, so as to determine whether an object to be detected exists in front of the wearable device.
For example, assuming that the first preset frequency range is (0 Hz,10 Hz), the first frequency is 5Hz and is located in (0 Hz,10 Hz), at this time, the wearable device detects, by means of the infrared detection device, a signal value reflected by the object to be detected at a frequency of 5 Hz.
102. And when the signal value is larger than a preset signal threshold value, determining that an object to be detected exists.
It should be noted that, after the wearable device receives the signal value sent by the light sensor through the infrared detection device, the wearable device may compare the signal value with the preset signal threshold value to determine whether an object to be detected exists in front of the wearable device, where the object to be detected is an object to be detected, and the object to be detected may be a living body or a non-living body, which is not specifically limited herein.
Wherein if the signal value is greater than a preset signal threshold, the wearable device may determine that an occluding object is present in front; if the signal value is less than or equal to the preset signal threshold, the wearable device may determine that there is no occluding object in front.
It can be appreciated that the selection of the preset signal threshold may be acquired by the wearable device in a large amount of second experimental data, that is, the preset signal threshold is set by the wearable device before leaving the factory, which is not described in detail herein.
For example, assuming that the preset signal threshold is 5mA, the wearable device receives, through the infrared detection device, a signal value sent by the light sensor as 6mA, where the 6mA is greater than 5mA, and at this time, the wearable device determines that an object to be detected exists in front.
Optionally, after step 102, the method may further include: and when the signal value is smaller than or equal to the preset signal threshold value, the wearable device is closed.
Optionally, when the signal value is less than or equal to the preset signal threshold, the wearable device turns off the wearable device, which may include, but is not limited to, the following implementation manners:
implementation 1: and when the signal value is smaller than or equal to the preset signal threshold value, the wearable device closes a photoplethysmography (PhotoPlethysmoGraph, PPG) on the wearable device through the accelerometer.
Among them, PPG is an infrared nondestructive detection technique for detecting a change in blood volume in living tissue by means of photoelectric conversion technique. When a light beam of a certain wavelength is applied to the skin surface at the tip of a finger, the contraction and expansion of the blood vessel each time a heartbeat affects the transmission of light (e.g. light rays passing through the finger tip in transmitted PPG) or the reflection of light (e.g. light rays coming from the vicinity of the wrist surface in reflected PPG). When light passes through skin tissue and then reflects to the light sensor, the illumination will be attenuated to some extent. The absorption of light by tissues like muscles, bones, veins and other connective tissues is substantially unchanged (provided that the measurement site does not move significantly), but arteries are different and the absorption of light naturally varies due to pulsations of blood in the arteries. When the optical sensor converts an optical signal into an electrical signal, the optical signal can be classified into a Direct Current (DC) signal and an alternating Current (ALTERNATING CURRENT, AC) signal, because the absorption of light by an artery changes and the absorption of light by other tissues is basically unchanged. The wearable device can reflect the characteristics of blood flow according to the AC signal. That is, in the present invention, PPG is used to detect the heart rate of a living body. The wearable device closes the PPG on the wearable device, that is, the wearable device closes its infrared detection device, so as to reduce the power consumption of the wearable device.
Implementation 2: when the signal value is smaller than or equal to the preset signal threshold value, the wearable device outputs second prompt information and receives a first instruction input by a user, wherein the second prompt information is used for prompting the user that an object to be detected does not exist in front of the user; the wearable device controls the wearable device to enter a standby state or a shutdown state according to the first instruction.
It can be appreciated that the first instruction is used to control the wearable device to enter a standby state or a power-off state, and the first instruction may be a voice instruction, a key instruction, and the key instruction may be a physical key instruction or a virtual key instruction, which is not specifically limited herein.
The wearable device receives a signal value sent by the optical sensor through the infrared detection device, wherein the signal value is 2mA, and the 2mA is smaller than 5mA, and at the moment, the wearable device outputs second prompt information and receives a first instruction input by a user; the wearable device controls the wearable device to enter a standby state according to the first instruction.
Optionally, the wearable device outputs the second prompt information, which may include, but is not limited to, the following implementation manners:
Implementation 1: the wearable device outputs second prompt information in the form of voice.
It should be noted that the voice may be set before the wearable device leaves the factory, or may be set by the user according to his own preference, which is not limited herein specifically.
Implementation 2: the wearable device outputs second prompt information in the form of a flash lamp.
It should be noted that the flashing light may flash as monochromatic light or as alternate flashing light, which is not limited herein.
Implementation 3: the wearable device outputs second prompt information in a vibration mode.
The vibration may be intermittent or continuous, and is not particularly limited herein.
It will be appreciated that the second prompt information is conveniently and intuitively known to the user, whether in the form of voice, flashing light or vibration. In particular, the implementation manners 1-3 may be combined with each other to form a new implementation manner, and the new implementation manner is also within the scope of protection of the present invention, which is not described herein in detail.
103. And if the pulse wave of the object to be detected is detected to exist at the second frequency through the infrared detection device, determining the object to be detected as a living body.
Wherein the second frequency is greater than the first frequency. The living body may include, but is not limited to, a human.
In particular, the living body may be a child.
It will be appreciated that the invention may be from the perspective of a child, the wearable device may detect the heart rate of the child in a state of motion.
It can be appreciated that the second frequency is within a second preset frequency range, which is acquired by the wearable device in a large amount of third experimental data. The second preset frequency range may be configured by a third preset frequency threshold and a fourth preset frequency threshold, where the third preset frequency threshold is smaller than the fourth preset frequency threshold. Wherein the third preset frequency threshold is greater than the second preset frequency threshold.
It should be noted that, the condition that the value of the second frequency needs to be satisfied is that the wearable device can detect the pulse wave on the object to be detected. In this way, the accuracy of the wearable device in detecting whether pulse waves exist on the object to be detected can be improved.
For example, assuming that the second preset frequency range is (20 Hz,30 Hz), the second frequency is 25Hz, which is located within (20 Hz,30 Hz), at this time, the wearable device detects whether the object to be measured has a pulse wave at a frequency of 25Hz by means of the infrared detection device.
Optionally, if the wearable device detects, through the infrared detection device, that the object to be detected has a pulse wave at the second frequency, the wearable device determines the object to be detected as a living body, which may include: if the wearable equipment acquires a first distance between the infrared detection device and the object to be detected; when the first distance is smaller than a preset distance threshold, the infrared detection device detects that the pulse wave exists in the object to be detected at a second frequency, and the wearable device determines the object to be detected as a living body.
It can be appreciated that the wearable device needs to determine the distance between the object to be measured and the wearable device after determining that the object to be measured exists in front of the wearable device; when the distance meets the distance condition, the wearable device can detect whether pulse waves exist on the object to be detected; if a pulse wave exists, the wearable device may determine the object to be measured as a living body; if there is no pulse wave, the wearable device may determine the object to be measured as a non-living body.
It should be noted that, the first distance between the infrared detection device and the object to be detected may be detected by the wearable device through a distance detection device, and the distance detection device may be a distance sensor; the preset distance threshold may be obtained by the wearable device in a large amount of second experimental data, that is, the preset distance threshold is set by the wearable device before leaving the factory, which is not described in detail herein.
Illustratively, the preset distance threshold is assumed to be 10 meters (simply: m). The wearable device detects that a first distance between the infrared detection device and the object to be detected is 8m through the distance sensor, the 8m is smaller than 10m, and at the moment, the wearable device detects a signal value reflected by the object to be detected through the infrared detection device at a frequency of 6 Hz.
Optionally, after step 103, the method may further include: if the wearable device does not detect that the pulse wave exists in the object to be detected at the second frequency through the infrared detection device, the wearable device determines the object to be detected as a non-living body.
Optionally, after the wearable device determines the object to be measured as a non-living body, the wearable device may turn off the wearable device.
It should be noted that, the process of closing the wearable device in the step 102 is described in detail, which is not described in detail herein.
It is understood that the wearable device does not detect a pulse wave on the object to be measured, and determines the object to be measured as a non-living body. Because the wearable device does not further process non-living bodies, the wearable device can be turned off to avoid electricity consumption and prolong the service life of a battery.
Optionally, the wearable device turns off the wearable device, which may include: the wearable device outputs third prompt information, wherein the third prompt information is used for prompting a user that the object to be detected is determined to be a non-living body; the wearable device receives a second instruction input by a user, and controls the wearable device to enter a standby state or a shutdown state according to the second instruction, wherein the second instruction is used for indicating that the wearable device can control the wearable device to enter the standby state or the shutdown state.
It should be noted that, in the method after step 103, the explanation of the second instruction is similar to the explanation of the first instruction in step 102; the implementation manner of outputting the third prompt information by the wearable device is similar to the implementation manner of outputting the second prompt information by the wearable device in step 102, and is not described in detail herein.
In the embodiment of the invention, the signal value received by the optical sensor is detected at a first frequency through the infrared detection device; when the signal value is larger than a preset signal threshold value, determining that an object to be detected exists; and if the pulse wave of the object to be detected is detected by the infrared detection device at a second frequency, determining the object to be detected as a living body, wherein the second frequency is larger than the first frequency. The wearable device judges whether an object to be detected exists in front of the wearable device according to the signal value sent by the optical sensor; judging whether pulse waves exist on the object to be detected under the condition that the object to be detected is determined to exist; in the case where it is determined that a pulse wave exists on the object to be measured, the object to be measured is determined as a living body. The method enables the wearable device to detect pulse waves based on the infrared detection device so as to determine that the object to be detected is a living body, and reduces the using time of green light emitted by the wearable device so as to reduce the damage degree of the green light to eyes of a user.
As shown in fig. 2, another embodiment of a living body detection method in an embodiment of the present invention is shown, where the method is applied to a wearable device, and the method may include:
201. The signal value received by the light sensor is detected at a first frequency by an infrared detection device.
202. And when the signal value is larger than a preset signal threshold value, determining that an object to be detected exists.
203. And if the pulse wave of the object to be detected is detected to exist at the second frequency through the infrared detection device, determining the object to be detected as a living body.
Wherein the second frequency is greater than the first frequency.
It should be noted that steps 201 to 203 are similar to steps 101 to 103 shown in fig. 1 in this embodiment, and are not repeated here.
204. A first light emitter in the wearable device is activated and the light emitter is controlled to emit green light, and the heart rate of the living body is detected at a third frequency.
Wherein, be equipped with first light emitter in the wearable equipment.
It can be appreciated that the third frequency is within a third preset frequency range, which is acquired by the wearable device in a large amount of fourth experimental data. The third preset frequency range may be configured by a fifth preset frequency threshold and a sixth preset frequency threshold, where the fifth preset frequency threshold is smaller than the sixth preset frequency threshold.
It should be noted that, the condition that the value of the third frequency needs to satisfy is that the wearable device can detect the heart rate on the living body. In this way, the accuracy with which the wearable device can detect the heart rate on the living body can be improved.
It will be appreciated that the reason for the wearable device to detect heart rate using green light is that the signal obtained by the wearable device using green light will vary more than the signal obtained by red light, and that the ability to withstand the effects of ambient light using green light is better than the ability to withstand the effects of ambient light using red light. Thus, the signal to noise ratio of the wearable device for detecting the heart rate by green light is higher than the signal to noise ratio of the wearable device for detecting the heart rate by red light, the higher the signal to noise ratio is, the smaller the interference of the outside to the wearable device for detecting the heart rate is, and the more accurate the heart rate detected by the wearable device is.
Illustratively, assuming a third preset frequency range (20 Hz,30 Hz), the third frequency is 25Hz within (20 Hz,10 Hz), at which point the wearable device activates a first light emitter in the wearable device and controls the light emitter to emit green light, and the heart rate of the living subject is detected at a frequency of 25 Hz.
It can be appreciated that in the prior art, the electronic device generally determines whether the object to be measured is a living body based on the heart rate. In this way, the electronic device turns on a green light to detect heart rate without the user's preparation, which may cause some harm to the user's eyes. In the invention, the wearable device judges whether the object to be detected is a living body according to the pulse wave, and starts the green light to detect the heart rate under the condition that the object to be detected is determined to be the living body, so that the damage of the green light to eyes of a user can be effectively reduced.
Optionally, the wearable device activates a first light emitter in the wearable device and controls the light emitter to emit green light, and detects the heart rate of the living body at a third frequency, which may include, but is not limited to, the following implementations:
Implementation 1: after waiting for a preset time period, the wearable device starts a first light emitter in the wearable device and controls the light emitter to emit green light so as to detect the heart rate of the living body.
It should be noted that, when the wearable device determines the object to be measured as a living body, the wearable device may detect the heart rate of the living body after a period of time.
Implementation 2: the wearable device directly activates a first light emitter in the wearable device and controls the light emitter to emit green light to periodically detect a heart rate of the living body based on a reflected signal of the green light.
It should be noted that, when the wearable device determines the object to be measured as a living body, the wearable device may periodically detect the heart rate of the living body.
Illustratively, the wearable device activates a first light emitter in the wearable device and controls the light emitter to emit green light, and detects the heart rate of the living subject at 25Hz at 17 pm every week.
Implementation 3: after waiting for a preset time period, the wearable device starts a first light emitter in the wearable device and controls the light emitter to emit green light so as to periodically detect the heart rate of the living body according to the reflected signal of the green light.
Implementation 4: the wearable device starts a first light emitter in the wearable device, controls the light emitter to emit green light, and obtains the beating times of the pulse wave of the living body at a third frequency; the wearable device calculates the heart rate of the living body according to the beating times.
The heart rate refers to the number of beats per minute of the heart. The heart rate of normal persons ranges from 60 to 100 beats/min. The pulse refers to arterial pulsation which can be touched by the body surface of a human body, and is essentially that the heart is effectively contracted to cause the change of the positive pressure of the peripheral blood vessel wall, and the arterial wall with elasticity is acted to deform, so that the human body can more intuitively detect the arterial pulsation times. The pulse of a normal person is 60 times/min to 100 times/min. It follows that the heart rate and the number of pulses are normally equal.
Therefore, the number of beats of the pulse wave acquired by the wearable device is the heart rate of the living body, and at this time, the wearable device can determine that the living body is in a normal state.
In the embodiment of the invention, the signal value received by the optical sensor is detected at a first frequency through the infrared detection device; when the signal value is larger than a preset signal threshold value, determining that an object to be detected exists; if the pulse wave of the object to be detected is detected to exist at a second frequency through the infrared detection device, the object to be detected is determined to be a living body, and the second frequency is larger than the first frequency; a first light emitter in the wearable device is activated and the light emitter is controlled to emit green light, and the heart rate of the living body is detected at a third frequency. The wearable device judges whether an object to be detected exists in front of the wearable device according to the signal value sent by the optical sensor; judging whether pulse waves exist on the object to be detected under the condition that the object to be detected is determined to exist; under the condition that the pulse wave exists on the object to be detected, the object to be detected is determined to be a living body; the wearable device performs heart rate detection on the living body. The method not only can enable the wearable equipment to detect pulse waves based on the infrared detection device to determine that the object to be detected is a living body and reduce the using time of green light emitted by the wearable equipment so as to reduce the damage degree of the green light to eyes of a user, but also can enable the green light to detect the heart rate of the living body after the living body is confirmed.
As shown in fig. 3, another embodiment of a living body detection method in an embodiment of the present invention is shown, where the method is applied to a wearable device, and the method may include:
301. The signal value received by the light sensor is detected at a first frequency by an infrared detection device.
302. And when the signal value is larger than a preset signal threshold value, determining that an object to be detected exists.
303. And if the pulse wave of the object to be detected is detected to exist at the second frequency through the infrared detection device, determining the object to be detected as a living body.
Wherein the second frequency is greater than the first frequency.
304. A first light emitter in the wearable device is activated and the light emitter is controlled to emit green light, and the heart rate of the living body is detected at a third frequency.
It should be noted that steps 301 to 304 are similar to steps 201 to 204 shown in fig. 2 in this embodiment, and will not be described here again.
305. And when the heart rate is within the preset heart rate range, recording and storing the heart rate.
The preset heart rate range is a section formed by a first preset heart rate threshold value and a second preset heart rate threshold value, the first preset heart rate threshold value is smaller than the second preset heart rate threshold value, and the preset heart rate range is generally set to be (60 times/min, 100 times/min).
306. And outputting first prompt information when the heart rate is out of the preset heart rate range.
The first prompt information is related advice provided for a user by the wearable device according to the heart rate.
Optionally, when the heart rate is outside the preset heart rate range, the wearable device outputs the first prompting information, which may include: outputting a first sub-prompt message when the heart rate is smaller than or equal to a first preset heart rate threshold value; and outputting a second sub-prompt message when the heart rate is greater than or equal to a second preset heart rate threshold.
It can be appreciated that when the heart rate is less than or equal to a first preset heart rate threshold, the wearable device can determine that the living body is in a tachycardia state, and the output first sub-prompting information can be prompting the user to detect the thyroid function; when the heart rate is greater than or equal to a second preset heart rate threshold, the wearable device can judge that the living body is in a bradycardia state, and the output second sub-prompting information can prompt the user to detect the reason of the too low heart rate of the living body and take corresponding measures.
Among these, there are three reasons for the heart rate being too low: the first is vagal hyperfunction, which when the vagus nerve is excited, the tip of the vagus nerve releases a substance called "acetylcholine", causing the heart rate to be too low; the second is sick sinus syndrome, which is a sick heart manifestation and can be the heart rate too low caused by coronary heart disease, cardiomyopathy and other diseases; the third is that heart beat is slow due to severe atrioventricular block, resulting in a heart rate that is too low.
In the embodiment of the invention, the signal value received by the optical sensor is detected at a first frequency through the infrared detection device; when the signal value is larger than a preset signal threshold value, determining that an object to be detected exists; if the pulse wave of the object to be detected is detected to exist at a second frequency through the infrared detection device, the object to be detected is determined to be a living body; activating a first light emitter in the wearable device and controlling the light emitter to emit green light, detecting a heart rate of the living body at a third frequency; when the heart rate is within a preset heart rate range, recording and storing the heart rate and the heart rate; and outputting first prompt information when the heart rate is out of the preset heart rate range. The wearable device judges whether an object to be detected exists in front of the wearable device according to the signal value sent by the optical sensor; judging whether pulse waves exist on the object to be detected under the condition that the object to be detected is determined to exist; under the condition that the pulse wave exists on the object to be detected, the object to be detected is determined to be a living body; the wearable device detects the heart rate of the living body and makes corresponding measures according to the detected heart rate. The method not only can enable the wearable equipment to detect pulse waves based on the infrared detection device to determine that the object to be detected is a living body and reduce the using time of green light emitted by the wearable equipment so as to reduce the damage degree of the green light to eyes of a user, but also can detect the heart rate of the living body so that the user can timely master the heart rate of the living body.
As shown in fig. 4a, which is a schematic diagram of an embodiment of the wearable device in the embodiment of the present invention, may include: a detection module 401 and a determination module 402;
a detection module 401, configured to detect, by using an infrared detection device, a signal value received by the optical sensor at a first frequency;
A determining module 402, configured to determine that an object to be detected exists when the signal value is greater than a preset signal threshold; if the pulse wave of the object to be detected is detected by the infrared detection device at a second frequency, the object to be detected is determined to be a living body, and the second frequency is larger than the first frequency.
Optionally, in some embodiments of the present invention, as shown in fig. 4b, a schematic diagram of another embodiment of the wearable device in the embodiment of the present invention may further include: an acquisition module 403;
An obtaining module 403, configured to obtain a first distance between the infrared detection device and the object to be detected;
the detection module 401 is specifically configured to detect, by the infrared detection device, that a pulse wave exists in the object to be detected at a second frequency when the first distance is smaller than a preset distance threshold.
Alternatively, in some embodiments of the invention,
The detection module 401 is further configured to activate a first light emitter in the wearable device, and control the light emitter to emit green light, and detect a heart rate of the living body at a third frequency.
Alternatively, in some embodiments of the invention,
The detection module 401 is specifically configured to start a first light emitter in the wearable device after waiting for a preset period of time, and control the light emitter to emit green light, so as to detect a heart rate of the living body; or, directly activating a first light emitter in the wearable device and controlling the light emitter to emit green light to periodically detect the heart rate of the living body according to the reflected signal of the green light.
Alternatively, in some embodiments of the invention,
The obtaining module 403 is specifically configured to start a first light emitter in the wearable device, control the light emitter to emit green light, and obtain the number of beats of the pulse wave of the living body at a third frequency;
the detection module 401 is specifically configured to calculate, according to the number of beats, a heart rate of the living body.
Optionally, in some embodiments of the present invention, as shown in fig. 4c, a schematic diagram of another embodiment of the wearable device in the embodiment of the present invention may further include: a processing module 404;
The processing module 404 is configured to record and save the heart rate when the heart rate is within a preset heart rate range; when the heart rate is out of the preset heart rate range, outputting first prompt information, wherein the first prompt information is related advice provided for a user according to the heart rate.
Alternatively, in some embodiments of the invention,
The processing module 404 is specifically configured to turn off the wearable device when the signal value is less than or equal to the preset signal threshold; or alternatively, the first and second heat exchangers may be,
If the pulse wave of the object to be detected is not detected at the second frequency by the infrared detection device, the object to be detected is determined to be a non-living body.
Fig. 5 is a schematic diagram of another embodiment of a wearable device according to an embodiment of the present invention, and fig. 5 is a block diagram illustrating a part of a structure related to the wearable device according to the embodiment of the present invention. Referring to fig. 5, the wearable device includes: radio Frequency (RF) circuitry 510, memory 520, input unit 530, display unit 540, sensor 550, audio circuitry 560, wireless fidelity (WIRELESS FIDELITY, wiFi) module 570, processor 580, and power supply 590. Those skilled in the art will appreciate that the wearable device structure shown in fig. 5 is not limiting of the wearable device and may include more or fewer components than shown, or certain components in combination, or a different arrangement of components.
The following describes the various constituent components of the wearable device in detail with reference to fig. 5:
The RF circuit 510 may be used for receiving and transmitting signals during a message or a call, and in particular, after receiving downlink information of a base station, the signal is processed by the processor 580; in addition, the data of the design uplink is sent to the base station. Generally, RF circuitry 510 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (Low Noise Amplifier, LNA), a duplexer, and the like. In addition, the RF circuitry 510 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol including, but not limited to, global System for Mobile communications (Global System of Mobile communication, GSM), general Packet Radio Service (GPRS), code division multiple Access (Code Division Multiple Access, CDMA), wideband code division multiple Access (Wideband Code Division Multiple Access, WCDMA), long term evolution (Long Term Evolution, LTE), email, short message Service (Short MESSAGING SERVICE, SMS), and the like.
The memory 520 may be used to store software programs and modules that the processor 580 performs various functional applications and data processing of the wearable device by running the software programs and modules stored in the memory 520. The memory 520 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, application programs required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data created from the use of the wearable device (such as audio data, phonebooks, etc.), and so on. In addition, memory 520 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.
The input unit 530 may be used to receive input numeric or character information and to generate key signal inputs related to user settings and function controls of the wearable device. In particular, the input unit 530 may include a touch panel 531 and other input devices 532. The touch panel 531, also referred to as a touch screen, may collect touch operations thereon or thereabout by a user (e.g., operations of the user on the touch panel 531 or thereabout by using any suitable object or accessory such as a finger, a stylus, etc.), and drive the corresponding connection device according to a predetermined program. Alternatively, the touch panel 531 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch azimuth of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device and converts it into touch point coordinates, which are then sent to the processor 580, and can receive commands from the processor 580 and execute them. In addition, the touch panel 531 may be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. The input unit 530 may include other input devices 532 in addition to the touch panel 531. In particular, other input devices 532 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, mouse, joystick, etc.
The display unit 540 may be used to display information input by a user or information provided to the user and various menus of the wearable device. The display unit 540 may include a display panel 541, and optionally, the display panel 541 may be configured in the form of a Liquid crystal display (Liquid CRYSTAL DISPLAY, LCD), an Organic Light-Emitting Diode (OLED), or the like. Further, the touch panel 531 may cover the display panel 541, and when the touch panel 531 detects a touch operation thereon or thereabout, the touch operation is transferred to the processor 580 to determine the type of the touch event, and then the processor 580 provides a corresponding visual output on the display panel 541 according to the type of the touch event. Although in fig. 5, the touch panel 531 and the display panel 541 implement input and output functions of the wearable device as two separate components, in some embodiments, the touch panel 531 and the display panel 541 may be integrated to implement input and output functions of the wearable device.
The wearable device may also include at least one sensor 550, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor that may adjust the brightness of the display panel 541 according to the brightness of ambient light, and a proximity sensor that may turn off the display panel 541 and/or the backlight when the wearable device moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the acceleration in all directions (typically three axes), and can detect the gravity and direction when stationary, and can be used for identifying the application of the gesture of the wearable device (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration identification related functions (such as pedometer, knocking) and the like; other sensors such as gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc. that may also be configured with the wearable device are not described in detail herein.
Audio circuitry 560, speaker 561, microphone 562 may provide an audio interface between the user and the wearable device. The audio circuit 560 may transmit the received electrical signal converted from audio data to the speaker 561, and the electrical signal is converted into a sound signal by the speaker 561 and output; on the other hand, microphone 562 converts the collected sound signals into electrical signals, which are received by audio circuit 560 and converted into audio data, which are processed by audio data output processor 580 for transmission to, for example, another wearable device via RF circuit 510, or for output to memory 520 for further processing.
WiFi belongs to a short-distance wireless transmission technology, and the wearable device can help a user to send and receive emails, browse webpages, access streaming media and the like through the WiFi module 570, so that wireless broadband Internet access is provided for the user. Although fig. 5 shows a WiFi module 570, it will be appreciated that it does not belong to the necessary constitution of the wearable device, and can be omitted entirely as required within the scope of not changing the essence of the invention.
Processor 580 is a control center of the wearable device, connects various portions of the entire wearable device using various interfaces and lines, performs various functions of the wearable device and processes the data by running or executing software programs and/or modules stored in memory 520, and invoking data stored in memory 520, thereby overall monitoring the wearable device. Optionally, processor 580 may include one or more processing units; preferably, processor 580 may integrate an application processor that primarily handles operating systems, user interfaces, applications, etc., with a modem processor that primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 580.
The wearable device also includes a power supply 590 (e.g., a battery) for powering the various components, which may preferably be logically connected to the processor 580 by a power management system so as to perform functions such as managing charging, discharging, and power consumption by the power management system.
Although not shown, the wearable device may further include a camera, a bluetooth module, etc., which will not be described herein.
In an embodiment of the present invention, the processor 580 included in the wearable device further has the following functions:
detecting, by an infrared detection device, a signal value received by the light sensor at a first frequency;
When the signal value is larger than a preset signal threshold value, determining that an object to be detected exists;
If the pulse wave of the object to be detected is detected by the infrared detection device at a second frequency, the object to be detected is determined to be a living body, and the second frequency is larger than the first frequency.
Optionally, the processor 580 also has the following functions:
Acquiring a first distance between the infrared detection device and the object to be detected; when the first distance is smaller than a preset distance threshold, the infrared detection device detects that the pulse wave exists in the object to be detected at a second frequency.
Optionally, the processor 580 also has the following functions:
a first light emitter in the wearable device is activated and the light emitter is controlled to emit green light, and the heart rate of the living being is detected at a third frequency.
Optionally, the processor 580 also has the following functions:
After waiting for a preset time period, starting a first light emitter in the wearable device, and controlling the light emitter to emit green light so as to detect the heart rate of the living body; or, directly activating a first light emitter in the wearable device and controlling the light emitter to emit green light to periodically detect the heart rate of the living body according to the reflected signal of the green light.
Optionally, the processor 580 also has the following functions:
Starting a first light emitter in the wearable equipment, controlling the light emitter to emit green light, and acquiring the beating times of the pulse wave of the living body at a third frequency; and calculating the heart rate of the living body according to the beating times.
Optionally, the processor 580 also has the following functions:
when the heart rate is within the preset heart rate range, recording and storing the heart rate; when the heart rate is out of the preset heart rate range, outputting first prompt information, wherein the first prompt information is related advice provided for a user according to the heart rate.
Optionally, the processor 580 also has the following functions:
When the signal value is smaller than or equal to the preset signal threshold value, the wearable device is closed; or if the pulse wave of the object to be detected is not detected by the infrared detection device at the second frequency, determining the object to be detected as a non-living body.
In the above embodiments, it 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 includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present invention, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk Solid STATE DISK (SSD)), etc.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the several embodiments provided in the present invention, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A method of in-vivo detection, the method being applied to a wearable device, comprising:
detecting, by an infrared detection device, a signal value received by the light sensor at a first frequency;
when the signal value is larger than a preset signal threshold value, determining that an object to be detected exists;
if the pulse wave of the object to be detected is detected to exist at a second frequency through the infrared detection device, the object to be detected is determined to be a living body, and the second frequency is larger than the first frequency;
a first light emitter in the wearable device is activated and the light emitter is controlled to emit green light, and the heart rate of the living body is detected at a third frequency.
2. The method according to claim 1, wherein detecting, by the infrared detection device, the presence of a pulse wave of the object to be measured at a second frequency, comprises:
Acquiring a first distance between the infrared detection device and the object to be detected;
When the first distance is smaller than a preset distance threshold, detecting that the pulse wave exists in the object to be detected at a second frequency through the infrared detection device.
3. The method of claim 1 or 2, wherein the activating a first light emitter in the wearable device and controlling the light emitter to emit green light, detecting the heart rate of the living subject at a third frequency, comprises:
after waiting for a preset time period, starting a first light emitter in the wearable device, and controlling the light emitter to emit green light so as to detect the heart rate of the living body; or alternatively, the first and second heat exchangers may be,
A first light emitter in the wearable device is directly activated and the light emitter is controlled to emit green light to periodically detect the heart rate of the living body from a reflected signal of the green light.
4. The method of claim 1 or 2, wherein the activating a first light emitter in the wearable device and controlling the light emitter to emit green light, detecting the heart rate of the living subject at a third frequency, comprises:
Starting a first light emitter in the wearable equipment, controlling the light emitter to emit green light, and acquiring the beating times of the pulse wave of the living body at a third frequency;
and calculating the heart rate of the living body according to the beating times.
5. The method according to claim 1 or 2, characterized in that the method further comprises:
when the heart rate is within a preset heart rate range, recording and storing the heart rate and the heart rate;
When the heart rate is out of the preset heart rate range, outputting first prompt information, wherein the first prompt information is related advice provided for a user according to the heart rate.
6. The method according to claim 1, wherein the method further comprises:
when the signal value is smaller than or equal to the preset signal threshold value, the wearable device is closed; or alternatively, the first and second heat exchangers may be,
And if the pulse wave of the object to be detected is not detected at the second frequency through the infrared detection device, determining the object to be detected as a non-living body.
7. A wearable device, comprising:
The detection module is used for detecting the signal value received by the optical sensor at a first frequency through the infrared detection device;
The determining module is used for determining that an object to be detected exists when the signal value is larger than a preset signal threshold value; if the pulse wave of the object to be detected is detected to exist at a second frequency through the infrared detection device, the object to be detected is determined to be a living body, and the second frequency is larger than the first frequency;
The detection module is further used for starting a first light emitter in the wearable device, controlling the light emitter to emit green light and detecting the heart rate of the living body at a third frequency.
8. A wearable device, comprising:
A memory storing executable program code;
and a processor coupled to the memory;
The processor invoking the executable program code stored in the memory, which when executed by the processor, causes the processor to implement the method of any of claims 1-6.
9. A computer readable storage medium having stored thereon executable program code, which when executed by a processor, implements the method according to any of claims 1-6.
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| JP6988061B2 (en) * | 2016-07-15 | 2022-01-05 | 富士フイルムビジネスイノベーション株式会社 | Biometric information measuring device and biometric information measuring program |
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