A multi-light-source heart rate detection device, method and wearable device

Abstract

The present application provides a multi-light-source heart rate detection device, method and wearable device. The multi-light-source heart rate detection device includes: a first optical receiving group, a second optical receiving group, a first light source and a second light source. The distances between the first light source and the first optical receiving group and between the first light source and the second optical receiving group are both preset resting and first dynamic heart rate measurement spacings; the distance between the second light source and the first optical receiving group is a preset resting heart rate measurement spacing, and this resting heart rate measurement spacing is less than or equal to the resting and first dynamic heart rate measurement spacings; the distance between the second light source and the second optical receiving group is a preset second dynamic heart rate measurement spacing, and this second dynamic heart rate measurement spacing is greater than the resting and first dynamic heart rate measurement spacings. By setting the spacings between different light sources and different optical receiving groups, the present application can achieve heart rate measurement in multiple scenarios of rest, slight movement and strenuous movement without using an accelerometer to participate in the calculation of PPG.

Description

Technical Field

[0001] The present application relates to the field of wearable devices, and in particular, to a multi-light-source heart rate detection device, method, and wearable device. Background Art

[0002] Wearable devices can measure physiological parameter information such as heart rate and blood oxygen saturation by setting PPG (Photo Plethysmo Graphy) sensors and based on PPG technology. From the perspective of PPG sensor layout, PPG detection technology is mainly divided into two types: one is transmissive detection technology and reflective detection technology. Among them, PPG sensors applied to wearable devices generally use reflective detection technology to measure physiological parameter information at the wrist. Currently, the main applications of PPG in smart watches or bracelets are: resting heart rate measurement and exercise heart rate measurement.

[0003] Existing wearable PPG sensor devices use two photoplethysmogram sensors distributed at different positions to collect two-channel photoplethysmogram signals, and at the same time use a three-axis accelerometer to collect the motion acceleration signal within the same time period. The above signals after sampling need to be filtered by a second-order Butterworth filter with a passband of 0.4 Hz - 4 Hz to eliminate the interference of motion noise and other noises outside a certain frequency range. The frequency positions of the motion noise in the spectra of the two photoplethysmogram signals are aligned with the frequency positions of the motion acceleration signal spectrum, and the spectral subtraction method can be used to obtain the spectra of the two photoplethysmogram signals after removing the motion noise, that is, the clean PPG signal spectrum.

[0004] The existing technology has only two optical paths, and it is necessary to cooperate with the accelerometer to achieve either two optical paths with equal PD and LED spacings or two optical paths with unequal spacings. In the case of not using the accelerometer to participate in the calculation of PPG, it is impossible to achieve heart rate measurement in multiple scenarios of rest, slight motion, and intense motion. Summary of the Invention

[0005] In view of this, the embodiments of the present application provide a multi-light-source heart rate detection device, method, and wearable device to eliminate or improve one or more defects existing in the prior art.

[0006] One aspect of the present application provides a multi-light-source heart rate detection device, including:

[0007] A first optical receiving group, a second optical receiving group, a first light source, and a second light source;

[0008] The distances between the first light source and the first optical receiving group and the second optical receiving group respectively are both preset resting and first dynamic heart rate measurement distances, so as to measure the resting heart rate of the person to be measured in a non-moving state or the first dynamic heart rate of the person to be measured in a first moving state based on the cooperation of the first light source with the first optical receiving group and / or the second optical receiving group;

[0009] The distance between the second light source and the first optical receiving group is a preset resting heart rate measurement distance, and this resting heart rate measurement distance is less than or equal to the resting and first dynamic heart rate measurement distances, so as to measure the resting heart rate of the person to be measured based on the cooperation of the second light source with the first optical receiving group;

[0010] The distance between the second light source and the second optical receiving group is a preset second dynamic heart rate measurement distance, and this second dynamic heart rate measurement distance is greater than the resting and first dynamic heart rate measurement distances, so as to measure the second dynamic heart rate of the person to be measured in a second moving state based on the cooperation of the second light source with the second optical receiving group, wherein the degree of exercise in the second moving state is higher than that in the first moving state.

[0011] In some embodiments of the present application, the first light source and the second light source are respectively communicatively connected to the processor of the wearable device, so that the processor controls at least one of the first light source and the second light source to be turned on or off.

[0012] In some embodiments of the present application, both the first light source and the second light source are light-emitting diodes for emitting red light, infrared light and green light;

[0013] When the first light source is used to measure the first dynamic heart rate of the person to be measured in the first moving state and the second light source is used to measure the second dynamic heart rate of the person to be measured in the second moving state, the green light is emitted.

[0014] In some embodiments of the present application, both the first optical receiving group and the second optical receiving group include at least two optical receivers;

[0015] The distances between each of the optical receivers and the first light source are both the resting and first dynamic heart rate measurement distances;

[0016] The distances between the optical receivers in the first optical receiving group and the second light source are all the resting heart rate measurement distances;

[0017] The distances between the optical receivers in the second optical receiving group and the second light source are all the second dynamic heart rate measurement distances.

[0018] In some embodiments of the present application, the value range of the resting heart rate measurement interval is between 2 mm and 5 mm;

[0019] The value range of the resting and first dynamic heart rate measurement intervals is between 4 mm and 5 mm;

[0020] The value range of the second dynamic heart rate measurement interval is between 5 mm and 9 mm.

[0021] On the other hand, the present application provides a wearable device, which includes:

[0022] Equipped with a nine-axis sensor and the multi-light-source heart rate detection device as described in the foregoing embodiments;

[0023] The multi-light-source heart rate detection device is arranged on the housing of the wearable device for contacting the skin of the person to be measured; the first optical receiving group, the second optical receiving group, the first light source and the second light source are respectively communicatively connected to the processor in the wearable device;

[0024] The nine-axis sensor is used to monitor the acceleration data of the person to be measured in real time, and send the acceleration data to the processor in the wearable device in real time, so that the processor determines the current exercise intensity of the person to be measured based on the acceleration data, and controls at least one of the first light source and the second light source to be turned on or off according to the exercise intensity, so that the first optical receiving group and / or the second optical receiving group receive the light signals reflected by the blood and tissues of the person to be measured, and convert the light signals into electrical signals and send them to the analog-to-digital conversion chip, and the analog-to-digital conversion chip converts the electrical signals into digital signals and sends them to the processor, so that the processor determines the corresponding pulse signal based on the digital signal, and then determines the corresponding heart rate of the person to be measured based on the pulse signal.

[0025] In the third aspect of the present application, a multi-light-source heart rate detection method is provided, which is implemented by using the multi-light-source heart rate detection device described in the foregoing embodiments;

[0026] The multi-light-source heart rate detection method includes:

[0027] Judging the current state of the person to be measured based on the acceleration data of the person to be measured collected in real time by the nine-axis sensor, where the state includes: non-exercise state, first exercise state and second exercise state, and the exercise intensity of the second exercise state is higher than that of the first exercise state;

[0028] According to the current exercise state of the person to be measured, apply the multi-light-source heart rate detection device to obtain the corresponding pulse signal, so as to determine the corresponding heart rate of the person to be measured based on the pulse signal.

[0029] In some embodiments of the present application, applying the multi-light-source heart rate detection device according to the current state of the person to be measured to obtain a corresponding pulse signal, and determining the heart rate corresponding to the person to be measured based on the pulse signal includes:

[0030] If the current state of the person to be measured is the non-exercise state, control the second light source to emit any one of red light, infrared light, and green light to the skin of the person to be measured in the non-exercise state, and control the first optical receiving group to correspondingly receive the pulse signal reflected by the skin, and determine the current resting heart rate of the person to be measured based on the pulse signal;

[0031] Alternatively, if the current state of the person to be measured is the non-exercise state, control the first light source to emit any one of red light, infrared light, and green light to the skin of the person to be measured in the non-exercise state, so that the first optical receiving group and / or the second optical receiving group receive the optical signal reflected by the blood and tissue of the person to be measured, and convert the optical signal into an electrical signal and send it to the analog-to-digital conversion chip. The analog-to-digital conversion chip converts the electrical signal into a digital signal and sends it to the processor, so that the processor determines the corresponding pulse signal based on the digital signal, and then determines the current resting heart rate corresponding to the person to be measured based on the pulse signal.

[0032] In some embodiments of the present application, applying the multi-light-source heart rate detection device according to the current state of the person to be measured to obtain a corresponding pulse signal, and determining the heart rate corresponding to the person to be measured based on the pulse signal includes:

[0033] If the current state of the person to be measured is the first exercise state, control the first light source to emit green light to the skin of the person to be measured in the first exercise state, so that the first optical receiving group and / or the second optical receiving group receive the optical signal reflected by the blood and tissue of the person to be measured, and convert the optical signal into an electrical signal and send it to the analog-to-digital conversion chip. The analog-to-digital conversion chip converts the electrical signal into a digital signal and sends it to the processor, so that the processor determines the corresponding pulse signal based on the digital signal, and then determines the current first dynamic heart rate corresponding to the person to be measured based on the pulse signal.

[0034] In some embodiments of the present application, applying the multi-light-source heart rate detection device according to the current state of the person to be measured to obtain a corresponding pulse signal, and determining the heart rate corresponding to the person to be measured based on the pulse signal includes: if the current state of the person to be measured is the second exercise state, controlling the second light source to emit green light to the skin of the person to be measured in the second exercise state currently, so that the second optical receiving group receives the optical signal reflected by the blood and tissue of the person to be measured, and converts the optical signal into an electrical signal and sends it to the analog-to-digital conversion chip, and the analog-to-digital conversion chip converts the electrical signal into a digital signal and sends it to the processor, so that the processor determines the corresponding pulse signal based on the digital signal, and then determines the current second dynamic heart rate corresponding to the person to be measured based on the pulse signal.

[0035] A multi-light-source heart rate detection device, method and wearable device provided by the present application, the multi-light-source heart rate detection device includes: a first optical receiving group, a second optical receiving group, a first light source and a second light source. The distances between the first light source and the first optical receiving group and the second optical receiving group are both preset resting and first dynamic heart rate measurement distances; the distance between the second light source and the first optical receiving group is a preset resting heart rate measurement distance, and the resting heart rate measurement distance is less than or equal to the resting and first dynamic heart rate measurement distances; the distance between the second light source and the second optical receiving group is a preset second dynamic heart rate measurement distance, and the second dynamic heart rate measurement distance is greater than the resting and first dynamic heart rate measurement distances. By setting the distances between different light sources and different optical receiving groups, the present application can realize heart rate measurement in multiple scenarios of resting, slight exercise and strenuous exercise without using an accelerometer to participate in the calculation of PPG.

[0036] The additional advantages, objectives, and features of the present application will be partially described below, and will become partially apparent to those of ordinary skill in the art after studying the following text, or can be learned from the practice of the present application. The objectives and other advantages of the present application can be achieved and obtained through the structures specifically pointed out in the specification and the drawings.

[0037] Those skilled in the art will understand that the objectives and advantages that can be achieved by the present application are not limited to the above specifically described, and the above and other objectives that the present application can achieve will be more clearly understood according to the following detailed description. Description of the Drawings

[0038] The accompanying drawings described herein are used to provide a further understanding of the present application, form a part of the present application, and do not limit the present application. The components in the drawings are not drawn to scale, but are only for showing the principles of the present application. To facilitate showing and describing some parts of the present application, the corresponding parts in the drawings may be enlarged, that is, may become larger relative to other components in the exemplary device actually manufactured according to the present application. In the drawings:

[0039] Figure 1 It is a schematic structural diagram of a multi-light-source heart rate detection device in an embodiment of the present application.

[0040] Figure 2 It is a schematic flowchart of a multi-light-source heart rate detection method in another embodiment of the present application. Detailed implementation manners

[0041] To make the objectives, technical solutions, and advantages of the present application clearer and more understandable, the present application will be further described in detail below in conjunction with the implementation manners and the accompanying drawings. Here, the illustrative implementation manners of the present application and their descriptions are used to explain the present application, but do not limit the present application.

[0042] Here, it should also be noted that in order to avoid obscuring the present application due to unnecessary details, only the structures and / or processing steps closely related to the solution according to the present application are shown in the drawings, and other details less related to the present application are omitted.

[0043] It should be emphasized that the term "including / comprising" when used herein refers to the presence of features, elements, steps, or components, but does not exclude the presence or addition of one or more other features, elements, steps, or components.

[0044] Here, it should also be noted that if not specifically stated, the term "connection" in this document can not only refer to direct connection, but also represent indirect connection with intermediaries.

[0045] In the following, embodiments of the present application will be described with reference to the accompanying drawings. In the drawings, the same reference numerals represent the same or similar components, or the same or similar steps.

[0046] Specifically, it will be described in detail through the following embodiments.

[0047] An embodiment of the present application provides a multi-light-source heart rate detection device. Refer to Figure 1 , the multi-light-source heart rate detection device specifically includes the following:

[0048] A first optical receiving group 1, a second optical receiving group 2, a first light source 3, and a second light source 4;

[0049] The distances between the first light source 3 and the first optical receiving group 1 and the second optical receiving group 2 are both preset resting and first dynamic heart rate measurement distances, so as to measure the resting heart rate of the measured person in a non-moving state or the first dynamic heart rate of the measured person in a first moving state based on the cooperation of the first light source 3 with the first optical receiving group 1 and / or the second optical receiving group 2;

[0050] The distance between the second light source 4 and the first optical receiving group 1 is a preset resting heart rate measurement distance, and this resting heart rate measurement distance is less than or equal to the resting and first dynamic heart rate measurement distances, so as to measure the resting heart rate of the measured person based on the cooperation of the second light source 4 with the first optical receiving group 1;

[0051] The distance between the second light source 4 and the second optical receiving group 2 is a preset second dynamic heart rate measurement distance, and this second dynamic heart rate measurement distance is greater than the resting and first dynamic heart rate measurement distances, so as to measure the second dynamic heart rate of the measured person in a second moving state based on the cooperation of the second light source 4 with the second optical receiving group 2, where the degree of exercise intensity in the second moving state is higher than that in the first moving state.

[0052] Specifically, the first optical receiving group 1 corresponds to PD1 and PD4, the second optical receiving group 2 corresponds to PD2 and PD3, the first light source 3 corresponds to LED1, the second light source 4 corresponds to LED2. The distances between the first light source 3 and the first optical receiving group 1 and the second optical receiving group 2 are both preset resting and first dynamic heart rate measurement distances, so as to measure the resting heart rate of the measured person in a non-moving state or the first dynamic heart rate of the measured person in a first moving state based on the cooperation of the first light source 3 with the first optical receiving group 1 and / or the second optical receiving group 2; the distance between the second light source 4 and the first optical receiving group 1 is a preset resting heart rate measurement distance, and this resting heart rate measurement distance is less than or equal to the resting and first dynamic heart rate measurement distances, so as to measure the resting heart rate of the measured person based on the cooperation of the second light source 4 with the first optical receiving group 1; the distance between the second light source 4 and the second optical receiving group 2 is a preset second dynamic heart rate measurement distance, and this second dynamic heart rate measurement distance is greater than the resting and first dynamic heart rate measurement distances, so as to measure the second dynamic heart rate of the measured person in a second moving state based on the cooperation of the second light source 4 with the second optical receiving group 2, where the degree of exercise intensity in the second moving state is higher than that in the first moving state. By setting the distances between different light sources and different optical receiving groups, it is possible to achieve heart rate measurement in multiple scenarios of rest, mild exercise, and strenuous exercise without using an accelerometer to participate in the calculation of PPG.

[0053] In some embodiments of the present application, the first light source 3 and the second light source 4 are respectively communicatively connected to the processor of the wearable device, so that the processor controls at least one of the first light source 3 and the second light source 4 to be turned on or off.

[0054] Specifically, the processor of the wearable device is communicatively connected to the first light source 3 and the second light source 4 respectively, and controls at least one of the first light source 3 and the second light source 4 to be turned on or off, for independently controlling the first light source 3 and the second light source 4. The processor of the wearable device can independently control the light source, improving the independence and stability of the heart rate measurement process.

[0055] In some embodiments of the present application, both the first light source 3 and the second light source 4 are light-emitting diodes for emitting red light, infrared light, and green light;

[0056] When the first light source is used to measure the first dynamic heart rate of the person to be measured in the first exercise state and the second light source is used to measure the second dynamic heart rate of the person to be measured in the second exercise state, the green light is emitted.

[0057] Specifically, both the first light source 3 and the second light source 4 are light-emitting diodes for emitting red light, infrared light, and green light; wherein, the peak wavelength of the red light is 660 nm, the peak wavelength of the infrared light is 950 nm, the peak wavelength of the green light is 526 nm, and when the first light source 3 is used to measure the first dynamic heart rate of the person to be measured in the first exercise state and the second light source 4 is used to measure the second dynamic heart rate of the person to be measured in the second exercise state, the green light is emitted. The light-emitting diodes using a combination of red light, infrared light, and green light can be flexibly used according to the specific requirements of heart rate measurement.

[0058] In some embodiments of the present application, both the first optical receiving group 1 and the second optical receiving group 2 include at least two optical receivers;

[0059] The distance between each of the optical receivers and the first light source 3 is the resting and first dynamic heart rate measurement spacing;

[0060] The distance between the optical receivers in the first optical receiving group 1 and the second light source 4 is the resting heart rate measurement spacing;

[0061] The distance between the optical receivers in the second optical receiving group 2 and the second light source 4 is the second dynamic heart rate measurement spacing.

[0062] Specifically, both the first optical receiving group 1 and the second optical receiving group 2 include at least two optical receivers; the distance between each optical receiver and the first light source 3 is the resting and first dynamic heart rate measurement spacing; the distance between the optical receivers in the first optical receiving group 1 and the second light source 4 is the resting heart rate measurement spacing; the distance between the optical receivers in the second optical receiving group 2 and the second light source 4 is the second dynamic heart rate measurement spacing. By providing at least two optical receivers in each optical receiving group, the accuracy of heart rate measurement can be improved.

[0063] In some embodiments of the present application, the value range of the resting heart rate measurement spacing is between 2 mm and 5 mm;

[0064] The value range of the resting and first dynamic heart rate measurement spacing is between 4 mm and 5 mm;

[0065] The value range of the second dynamic heart rate measurement spacing is between 5 mm and 9 mm.

[0066] Specifically, the value range of the resting heart rate measurement spacing is set between 2 mm and 5 mm; the value range of the resting and first dynamic heart rate measurement spacing is set between 4 mm and 5 mm; the value range of the second dynamic heart rate measurement spacing is set between 5 mm and 9 mm. In the present application, 2 mm to 3 mm, which has the best heart rate measurement effect, is selected from the value range of the resting heart rate measurement spacing, and 7 mm to 9 mm, which has the best heart rate measurement effect, is selected from the value range of the second dynamic heart rate measurement spacing. By setting the optimal measurement interval, the accuracy of heart rate measurement can be improved.

[0067] The present application provides a wearable device, which:

[0068] is provided with a nine-axis sensor and the multi-light-source heart rate detection device as described in the foregoing embodiments;

[0069] The multi-light-source heart rate detection device is disposed on the housing of the wearable device for contacting the skin of the person to be measured; the first optical receiving group 1, the second optical receiving group 2, the first light source 3, and the second light source 4 are respectively communicatively connected to a processor in the wearable device;

[0070] The nine-axis sensor is used to monitor the acceleration data of the person to be measured in real time, and send the acceleration data to the processor in the wearable device in real time, so that the processor determines the current exercise intensity of the person to be measured based on the acceleration data, and controls at least one of the first light source 3 and the second light source 4 to turn on or off according to the exercise intensity, so that the first optical receiving group 1 and / or the second optical receiving group 2 receive the optical signals reflected by the blood and tissues of the person to be measured, and convert the optical signals into electrical signals and send them to the analog-to-digital conversion chip. The analog-to-digital conversion chip converts the electrical signals into digital signals and sends them to the processor, so that the processor determines the corresponding pulse signal based on the digital signal, and then determines the corresponding heart rate of the person to be measured based on the pulse signal.

[0071] Specifically, the wearable device is provided with a nine-axis sensor and a multi-light-source heart rate detection device as described in the foregoing embodiment; the multi-light-source heart rate detection device is arranged on the housing of the wearable device for contacting the skin of the person to be measured; the first optical receiving group 1, the second optical receiving group 2, the first light source 3 and the second light source 4 are respectively communicatively connected to the processor in the wearable device; the nine-axis sensor is used to monitor the acceleration data of the person to be measured in real time, and send the acceleration data to the processor in the wearable device in real time, so that the processor determines the current exercise intensity of the person to be measured based on the acceleration data, and controls at least one of the first light source 3 and the second light source 4 to turn on or off according to the exercise intensity, so that the first optical receiving group 1 and / or the second optical receiving group 2 receive the optical signals reflected by the blood and tissues of the person to be measured, and convert the optical signals into electrical signals and send them to the analog-to-digital conversion chip. The analog-to-digital conversion chip converts the electrical signals into digital signals and sends them to the processor, so that the processor determines the corresponding pulse signal based on the digital signal, and then determines the corresponding heart rate of the person to be measured based on the pulse signal. By using the nine-axis sensor and the multi-light-source heart rate detection device in the wearable device in cooperation, the exercise state of the person to be measured is clarified, and the accuracy of heart rate measurement is improved.

[0072] The embodiment of the present application also provides a multi-light-source heart rate detection method implemented by the multi-light-source heart rate detection device described in the foregoing embodiment, as Figure 2 shown,

[0073] The multi-light-source heart rate detection method includes:

[0074] Step 110: Judge the current state of the person to be measured based on the acceleration data of the person to be measured collected in real time by the nine-axis sensor, where the state includes: non-exercise state, first exercise state, and second exercise state, and the exercise intensity of the second exercise state is higher than that of the first exercise state.

[0075] Step 120: According to the current motion state of the person to be measured, apply the multi-light-source heart rate detection device to obtain the corresponding pulse signal, and determine the heart rate of the person to be measured based on this pulse signal.

[0076] Specifically, the processor in the wearable device determines the current state of the person to be measured based on the acceleration data of the person to be measured collected in real time by the nine-axis sensor. Among them, the states include: non-motion state, first motion state, and second motion state, and the intensity of motion in the second motion state is higher than that in the first motion state; according to the current motion state of the person to be measured, apply the multi-light-source heart rate detection device to obtain the corresponding pulse signal, and determine the heart rate of the person to be measured based on this pulse signal. The acceleration data of the person to be measured collected in real time by the nine-axis sensor can more accurately determine the motion state of the person to be measured, so as to measure the heart rate corresponding to the motion state.

[0077] In some embodiments of the present application, the step of applying the multi-light-source heart rate detection device according to the current state of the person to be measured to obtain the corresponding pulse signal and determine the heart rate of the person to be measured based on this pulse signal includes:

[0078] If the current state of the person to be measured is the non-motion state, control the second light source 4 to emit any one of red light, infrared light, and green light to the skin of the person to be measured in the non-motion state, and control the first optical receiving group 1 to correspondingly receive the pulse signal reflected by the skin, and determine the current resting heart rate of the person to be measured based on this pulse signal;

[0079] Or, if the current state of the person to be measured is the non-motion state, control the first light source 3 to emit any one of red light, infrared light, and green light to the skin of the person to be measured in the non-motion state, so that the first optical receiving group 1 and / or the second optical receiving group 2 receive the optical signals reflected by the blood and tissues of the person to be measured, and convert the optical signals into electrical signals and send them to the analog-to-digital conversion chip. The analog-to-digital conversion chip converts the electrical signals into digital signals and sends them to the processor, so that the processor determines the corresponding pulse signal based on this digital signal, and then determines the current resting heart rate of the person to be measured based on this pulse signal.

[0080] Specifically, if the current state of the person to be measured is the non - moving state, control the second light source 4 to emit any one of red light, infrared light, and green light to the skin of the person to be measured who is currently in the non - moving state, and control the first optical receiving group 1 to correspondingly receive the pulse signal reflected by the skin, and determine the current resting heart rate of the person to be measured based on this pulse signal; or, if the current state of the person to be measured is the non - moving state, control the first light source 3 to emit any one of red light, infrared light, and green light to the skin of the person to be measured who is currently in the non - moving state, so that the first optical receiving group 1 and / or the second optical receiving group 2 receive the optical signals reflected by the blood and tissues of the person to be measured, and convert the optical signals into electrical signals and send them to the analog - to - digital conversion chip, and this analog - to - digital conversion chip converts the electrical signals into digital signals and sends them to the processor, so that the processor determines the corresponding pulse signal based on this digital signal, and then determines the current resting heart rate of the person to be measured corresponding to this pulse signal. By measuring the heart rate through multiple optical paths, the accuracy of measuring the heart rate of the person to be measured in the non - moving state can be improved.

[0081] In some embodiments of the present application, the method of obtaining the corresponding pulse signal by applying the multi - light - source heart rate detection device according to the current state of the person to be measured, and determining the heart rate corresponding to the person to be measured based on this pulse signal includes:

[0082] If the current state of the person to be measured is the first moving state, control the first light source 3 to emit green light to the skin of the person to be measured who is currently in the first moving state, so that the first optical receiving group 1 and / or the second optical receiving group 2 receive the optical signals reflected by the blood and tissues of the person to be measured, and convert the optical signals into electrical signals and send them to the analog - to - digital conversion chip, and this analog - to - digital conversion chip converts the electrical signals into digital signals and sends them to the processor, so that the processor determines the corresponding pulse signal based on this digital signal, and then determines the current first dynamic heart rate of the person to be measured corresponding to this pulse signal.

[0083] Specifically, if the current state of the person to be measured is the first moving state, control the first light source 3 to emit green light to the skin of the person to be measured who is currently in the first moving state, so that the first optical receiving group 1 and / or the second optical receiving group 2 receive the optical signals reflected by the blood and tissues of the person to be measured, and convert the optical signals into electrical signals and send them to the analog - to - digital conversion chip, and this analog - to - digital conversion chip converts the electrical signals into digital signals and sends them to the processor, so that the processor determines the corresponding pulse signal based on this digital signal, and then determines the current first dynamic heart rate of the person to be measured corresponding to this pulse signal. By measuring the heart rate through multiple optical paths, the accuracy of measuring the heart rate of the person to be measured in the first moving state can be improved.

[0084] In some embodiments of the present application, applying the multi-light-source heart rate detection device according to the current state of the person to be measured to obtain a corresponding pulse signal, and determining the heart rate corresponding to the person to be measured based on the pulse signal includes:

[0085] If the current state of the person to be measured is the second exercise state, control the second light source 4 to emit green light to the skin of the person to be measured in the second exercise state, so that the second optical receiving group 2 receives the light signals reflected by the blood and tissues of the person to be measured, and converts the light signals into electrical signals and sends them to the analog-to-digital conversion chip. The analog-to-digital conversion chip converts the electrical signals into digital signals and sends them to the processor, so that the processor determines the corresponding pulse signal based on the digital signals, and then determines the current second dynamic heart rate corresponding to the person to be measured based on the pulse signal.

[0086] Specifically, if the current state of the person to be measured is the second exercise state, control the second light source 4 to emit green light to the skin of the person to be measured in the second exercise state, so that the second optical receiving group 2 receives the light signals reflected by the blood and tissues of the person to be measured, and converts the light signals into electrical signals and sends them to the analog-to-digital conversion chip. The analog-to-digital conversion chip converts the electrical signals into digital signals and sends them to the processor, so that the processor determines the corresponding pulse signal based on the digital signals, and then determines the current second dynamic heart rate corresponding to the person to be measured based on the pulse signal. By measuring the heart rate through multiple optical paths, the accuracy of heart rate measurement in the second exercise state of the person to be measured can be improved.

[0087] A multi-light-source heart rate detection device, method and wearable device provided by the present application, the multi-light-source heart rate detection device includes: a first optical receiving group, a second optical receiving group, a first light source and a second light source. The distances between the first light source and the first optical receiving group and the second optical receiving group are both preset resting and first dynamic heart rate measurement distances; the distance between the second light source and the first optical receiving group is a preset resting heart rate measurement distance, and the resting heart rate measurement distance is less than or equal to the resting and first dynamic heart rate measurement distances; the distance between the second light source and the second optical receiving group is a preset second dynamic heart rate measurement distance, and the second dynamic heart rate measurement distance is greater than the resting and first dynamic heart rate measurement distances. The present application can realize heart rate measurement in multiple scenarios of resting, slight exercise and strenuous exercise without using an accelerometer to participate in the calculation of PPG by setting the distances between different light sources and different optical receiving groups.

[0088] The embodiment of the present application also provides an electronic device (i.e., an electronic device), such as a central server. The electronic device may include a processor, a memory, a receiver, and a transmitter. The processor is configured to execute the multi-light-source heart rate detection method mentioned in the above embodiment. The processor and the memory may be connected through a bus or other means. Taking the bus connection as an example, the receiver may be connected to the processor and the memory in a wired or wireless manner.

[0089] The processor may be a central processing unit (CPU). The processor may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. chips, or combinations of the above types of chips.

[0090] As a non-transitory computer-readable storage medium, the memory can be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as the program instructions / modules corresponding to the multi-light-source heart rate detection method in the embodiment of the present application. The processor executes various functional applications and data processing of the processor by running the non-transitory software programs, instructions, and modules stored in the memory, that is, to implement the multi-light-source heart rate detection method in the above method embodiment.

[0091] The memory may include a program storage area and a data storage area. Among them, the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created by the processor, etc. In addition, the memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some embodiments, the memory may optionally include a memory remotely set relative to the processor, and these remote memories may be connected to the processor through a network. Examples of the above networks include, but are not limited to, the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0092] The one or more modules are stored in the memory and, when executed by the processor, execute the multi-light-source heart rate detection method in the foregoing embodiment.

[0093] In some embodiments of the present application, the user equipment may include a processor, a memory, and a transceiver unit. The transceiver unit may include a receiver and a transmitter. The processor, the memory, the receiver, and the transmitter may be connected through a bus system. The memory is used to store computer instructions, and the processor is used to execute the computer instructions stored in the memory to control the transceiver unit to transmit and receive signals.

[0094] As an implementation manner, the functions of the receiver and the transmitter in the present application may be implemented by considering a transceiver circuit or a dedicated chip for transceiver. The processor may be implemented by considering a dedicated processing chip, a processing circuit, or a general-purpose chip.

[0095] As another implementation manner, a general computer may be considered to implement the server provided in the embodiments of the present application. That is, the program codes for implementing the functions of the processor, the receiver, and the transmitter are stored in the memory, and the general processor implements the functions of the processor, the receiver, and the transmitter by executing the codes in the memory.

[0096] The embodiments of the present application further provide a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the multi-light-source heart rate detection method in the foregoing embodiments are implemented. The computer-readable storage medium may be a tangible storage medium, such as a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a floppy disk, a hard disk, a removable storage disk, a CD-ROM, or any other form of storage medium known in the technical field.

[0097] Those of ordinary skill in the art should understand that the various exemplary components, systems, and methods described in conjunction with the embodiments disclosed herein can be implemented in hardware, software, or a combination of both. Specifically, whether to execute in a hardware or software manner depends on the specific application and design constraints of the technical solution. A professional technician may use different methods to implement the described functions for each specific application, but such an implementation should not be considered to exceed the scope of the present application. When implemented in a hardware manner, it may be, for example, an electronic circuit, an application-specific integrated circuit (ASIC), appropriate firmware, a plug-in, a functional card, and so on. When implemented in a software manner, the elements of the present application are programs or code segments used to execute the required tasks. The program or code segment may be stored in a machine-readable medium or transmitted through a data signal carried in a carrier wave on a transmission medium or a communication link.

[0098] It should be clear that the present application is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present application is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications, and additions, or change the order between steps after understanding the spirit of the present application.

[0099] In the present application, features described and / or illustrated for one embodiment can be used in the same or a similar manner in one or more other embodiments, and / or combined with the features of other embodiments or replace the features of other embodiments.

[0100] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the embodiments of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A multi-light-source heart rate detection device, characterized in that, Including: A first optical receiving group, a second optical receiving group, a first light source, and a second light source; The distances between the first light source and the first optical receiving group and between the first light source and the second optical receiving group are both a preset resting and first dynamic heart rate measurement distance, so as to measure the resting heart rate of the measured person in a non-moving state or the first dynamic heart rate of the measured person in a first moving state based on the first light source cooperating with the first optical receiving group and / or the second optical receiving group. The numerical range of the resting and first dynamic heart rate measurement distance is between 4 mm and 5 mm. The first light source is a light-emitting diode for emitting red light, infrared light, and green light. When the first light source is used to measure the first dynamic heart rate of the measured person in a first moving state, it emits the green light. When the first light source is used to measure the resting heart rate of the measured person in a non-moving state, it emits any one of the red light, the infrared light, and the green light; The distance between the second light source and the first optical receiving group is a preset resting heart rate measurement distance, and this resting heart rate measurement distance is less than or equal to the resting and first dynamic heart rate measurement distance, so as to measure the resting heart rate of the measured person based on the second light source cooperating with the first optical receiving group. The numerical range of the resting heart rate measurement distance is between 2 mm and 5 mm. The second light source is a light-emitting diode for emitting red light, infrared light, and green light. When the second light source is used to measure the resting heart rate of the measured person in a non-moving state, it emits any one of the red light, the infrared light, and the green light; The distance between the second light source and the second optical receiving group is a preset second dynamic heart rate measurement distance, and this second dynamic heart rate measurement distance is greater than the resting and first dynamic heart rate measurement distance, so as to measure the second dynamic heart rate of the measured person in a second moving state based on the second light source cooperating with the second optical receiving group. Among them, the exercise intensity of the second moving state is higher than that of the first moving state. The numerical range of the second dynamic heart rate measurement distance is between 5 mm and 9 mm. When the second light source is used to measure the second dynamic heart rate of the measured person in a second moving state, it emits the green light.

2. The multi-light-source heart rate detection device according to claim 1, wherein The first light source and the second light source are respectively communicatively connected to the processor of the wearable device, so that the processor controls at least one of the first light source and the second light source to be turned on or off.

3. The multi-light-source heart rate detection device according to claim 1, wherein Both the first optical receiving group and the second optical receiving group include at least two optical receivers; The distances between each optical receiver and the first light source are all the resting and first dynamic heart rate measurement distance; The distances between the optical receivers in the first optical receiving group and the second light source are all the resting heart rate measurement distance; The distances between the optical receivers in the second optical receiving group and the second light source are all the second dynamic heart rate measurement distance.

4. A wearable device, characterized in that, A nine-axis sensor and the multi-light-source heart rate detection device according to any one of claims 1 to 3 are provided; The multi-light-source heart rate detection device is arranged on the housing of the wearable device that contacts the skin of the person to be measured; the first optical receiving group, the second optical receiving group, the first light source and the second light source are respectively communicatively connected to the processor in the wearable device; The nine-axis sensor is used to monitor the acceleration data of the person to be measured in real time, and send the acceleration data to the processor in the wearable device in real time, so that the processor determines the current exercise intensity of the person to be measured based on the acceleration data, and controls at least one of the first light source and the second light source to turn on or off according to the exercise intensity, so that the first optical receiving group and / or the second optical receiving group receive the optical signals reflected by the blood and tissues of the person to be measured, and convert the optical signals into electrical signals and send them to the analog-to-digital conversion chip, and the analog-to-digital conversion chip converts the electrical signals into digital signals and sends them to the processor, so that the processor determines the corresponding pulse signal based on the digital signal, and then determines the corresponding heart rate of the person to be measured based on the pulse signal, realizing heart rate measurement in multiple scenarios of rest, mild exercise and strenuous exercise.

5. A multi-light-source heart rate detection method, characterized in that, It is implemented by using the multi-light-source heart rate detection device according to any one of claims 1 to 3; The multi-light-source heart rate detection method includes: Judging the current state of the person to be measured based on the acceleration data of the person to be measured collected in real time by the nine-axis sensor, where the state includes: non-exercise state, first exercise state and second exercise state, and the exercise intensity of the second exercise state is higher than that of the first exercise state; According to the current exercise state of the person to be measured, apply the multi-light-source heart rate detection device to obtain the corresponding pulse signal, so as to determine the corresponding heart rate of the person to be measured based on the pulse signal. The heart rate includes resting heart rate, first dynamic heart rate and second dynamic heart rate; if the current state of the person to be measured is the non-exercise state, control the second light source to emit any one of red light, infrared light and green light to the skin of the person to be measured in the non-exercise state, or control the first light source to emit any one of red light, infrared light and green light to the skin of the person to be measured in the non-exercise state; if the current state of the person to be measured is the first exercise state, control the first light source to emit green light to the skin of the person to be measured in the first exercise state; if the current state of the person to be measured is the second exercise state, control the second light source to emit green light to the skin of the person to be measured in the second exercise state.

6. The multi-light-source heart rate detection method according to claim 5, characterized in that, The step of applying the multi-light-source heart rate detection device according to the current exercise state of the person to be measured to obtain the corresponding pulse signal, so as to determine the corresponding heart rate of the person to be measured based on the pulse signal, includes: If the current state of the person to be measured is the non-exercise state, control the second light source to emit any one of red light, infrared light and green light to the skin of the person to be measured in the non-exercise state, and control the first optical receiving group to correspondingly receive the pulse signal reflected by the skin, and determine the current resting heart rate of the person to be measured based on the pulse signal; Alternatively, if the current state of the person to be measured is the non-exercise state, control the first light source to emit any one of red light, infrared light, and green light to the skin of the person to be measured who is currently in the non-exercise state, so that the first optical receiving group and / or the second optical receiving group receive the optical signals reflected by the blood and tissues of the person to be measured, convert the optical signals into electrical signals and send them to the analog-to-digital conversion chip, and the analog-to-digital conversion chip converts the electrical signals into digital signals and sends them to the processor, so that the processor determines the corresponding pulse signal based on the digital signal, and then determines the current resting heart rate of the person to be measured based on the pulse signal.

7. The multi-light-source heart rate detection method according to claim 5, wherein Applying the multi-light-source heart rate detection device according to the current exercise state of the person to be measured to obtain the corresponding pulse signal, and determining the heart rate corresponding to the person to be measured based on the pulse signal, includes: If the current state of the person to be measured is the first exercise state, control the first light source to emit green light to the skin of the person to be measured who is currently in the first exercise state, so that the first optical receiving group and / or the second optical receiving group receive the optical signals reflected by the blood and tissues of the person to be measured, convert the optical signals into electrical signals and send them to the analog-to-digital conversion chip, and the analog-to-digital conversion chip converts the electrical signals into digital signals and sends them to the processor, so that the processor determines the corresponding pulse signal based on the digital signal, and then determines the current first dynamic heart rate of the person to be measured based on the pulse signal.

8. The multi-light-source heart rate detection method according to claim 5, characterized in that, Applying the multi-light-source heart rate detection device according to the current exercise state of the person to be measured to obtain the corresponding pulse signal, and determining the heart rate corresponding to the person to be measured based on the pulse signal, includes: If the current state of the person to be measured is the second exercise state, control the second light source to emit green light to the skin of the person to be measured who is currently in the second exercise state, so that the second optical receiving group receives the optical signals reflected by the blood and tissues of the person to be measured, convert the optical signals into electrical signals and send them to the analog-to-digital conversion chip, and the analog-to-digital conversion chip converts the electrical signals into digital signals and sends them to the processor, so that the processor determines the corresponding pulse signal based on the digital signal, and then determines the current second dynamic heart rate of the person to be measured based on the pulse signal.

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