Heart rate monitoring method, device and equipment

Abstract

The embodiments of the present invention provide a heart rate monitoring method, device and equipment. The method includes: monitoring the user's heart rate at a preset sampling frequency to obtain the user's stable heart rate value; using the preset sampling frequency as a reference, gradually reducing the sampling frequency with a first preset step size, and calculating the difference between the user's heart rate value obtained at each sampling frequency and the stable heart rate value; determining the lowest sampling frequency where the difference is less than a preset threshold as the first target frequency, reducing the sampling frequency to the first target sampling frequency, and monitoring the user's heart rate at the first target sampling frequency. The method of the embodiment of the present invention reduces the power consumption of the heart rate monitoring device while ensuring the accuracy of heart rate monitoring.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a heart rate monitoring method, device and equipment. Background Art

[0002] Heart rate refers to the number of heart beats per unit time, usually the number of heart beats per minute (beat per minute, bpm). As one of the most important physiological parameters of human vital activities, it is of great significance for the diagnosis and monitoring of cardiovascular diseases and has important application value in the fields of vital sign monitoring, disease prevention and diagnosis. There is a certain probability that infants and young children may have their heartbeats stop due to factors such as diseases, turning over, choking on milk and blocking the respiratory tract, and being covered by quilts or pillows over the mouth and nose, resulting in death. Therefore, it is very necessary to monitor the heart rate of infants and young children who lack self-care ability, which can effectively reduce the probability of accidents.

[0003] Since the heart rate of infants and young children is much higher than that of adults, the heart rate monitoring devices for adults cannot accurately monitor the heart rate of infants and young children. In order to accurately monitor the heart rate of infants and young children, the existing heart rate monitoring devices for infants and young children usually use a relatively high sampling frequency for monitoring, and too high a sampling frequency will lead to an increase in device power consumption. Summary of the Invention

[0004] Embodiments of the present invention provide a heart rate monitoring method, device and equipment to solve the problem of high power consumption of existing heart rate monitoring devices.

[0005] In a first aspect, an embodiment of the present invention provides a heart rate monitoring method, which is applied to a heart rate monitoring device and includes:

[0006] Monitoring the heart rate of a user at a preset sampling frequency to obtain a stable heart rate value of the user;

[0007] Gradually reducing the sampling frequency by a first preset step length based on the preset sampling frequency, and respectively calculating the difference between the heart rate value of the user obtained at each sampling frequency and the stable heart rate value;

[0008] Determining the lowest sampling frequency with a difference less than a preset threshold as the first target frequency, reducing the sampling frequency to the first target sampling frequency, and monitoring the heart rate of the user at the first target sampling frequency.

[0009] In one embodiment, the range of the first target sampling frequency is greater than or equal to 40 Hz and less than or equal to 100 Hz.

[0010] In one embodiment, the method further includes:

[0011] Determining the first target sampling frequency as the transition sampling frequency;

[0012] Gradually reduce the sampling frequency by a second preset step size based on the transition sampling frequency, and calculate the difference between the user heart rate values obtained at each sampling frequency and the stable heart rate value respectively;

[0013] Determine the lowest sampling frequency with a difference less than a preset threshold as the second target sampling frequency, reduce the sampling frequency to the second target sampling frequency, and monitor the user's heart rate at the second target sampling frequency, where the first preset step size is greater than the second preset step size.

[0014] In one embodiment, the method further includes:

[0015] Record the corresponding relationship between the stable heart rate value and the second target sampling frequency.

[0016] In one embodiment, the method further includes:

[0017] Adjust the power of the light source of the heart rate monitoring device according to the intensity of the optical signal received by the photoelectric sensor of the heart rate monitoring device.

[0018] In one embodiment, the adjusting the power of the light source of the heart rate monitoring device according to the intensity of the optical signal received by the photoelectric sensor of the heart rate monitoring device includes:

[0019] If the intensity of the received optical signal is greater than the preset intensity, reduce the power of the light source;

[0020] If the intensity of the received optical signal is less than the preset intensity, increase the power of the light source.

[0021] In one embodiment, the method further includes:

[0022] Detect whether the heart rate monitoring device is worn on the user;

[0023] If the heart rate monitoring device is not worn on the user, enter the standby state.

[0024] In a second aspect, an embodiment of the present invention provides a heart rate monitoring device, which is characterized by including:

[0025] A preprocessing module for monitoring the user's heart rate at a preset sampling frequency to obtain the user's stable heart rate value;

[0026] An adjustment module for gradually reducing the sampling frequency by a first preset step size based on the preset sampling frequency, and calculating the difference between the user heart rate values obtained at each sampling frequency and the stable heart rate value respectively;

[0027] A monitoring module is configured to determine the lowest sampling frequency with a difference less than a preset threshold as the first target frequency, reduce the sampling frequency to the first target sampling frequency, and monitor the user's heart rate at the first target sampling frequency.

[0028] In one embodiment, the range of the first target sampling frequency is greater than or equal to 40 Hz and less than or equal to 100 Hz.

[0029] In a third aspect, an embodiment of the present invention provides a heart rate monitoring device, including:

[0030] At least one processor and a memory;

[0031] The memory stores computer-executable instructions;

[0032] At least one processor executes the computer-executable instructions stored in the memory, so that at least one processor executes the heart rate monitoring method according to any one of the first aspect.

[0033] The heart rate monitoring method, device, and device provided by the embodiments of the present invention monitor the user's heart rate at a preset sampling frequency to obtain the user's stable heart rate value; gradually reduce the sampling frequency by a first preset step based on the preset sampling frequency, and calculate the difference between the user's heart rate value obtained at each sampling frequency and the stable heart rate value respectively; determine the lowest sampling frequency with a difference less than the preset threshold as the first target frequency, reduce the sampling frequency to the first target sampling frequency, and monitor the user's heart rate at the first target sampling frequency. On the premise of ensuring the accuracy of heart rate monitoring, the power consumption of the heart rate monitoring device is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a flowchart of an embodiment of the heart rate monitoring method provided by the present invention;

[0035] Figure 2 It is a flowchart of another embodiment of the heart rate monitoring method provided by the present invention;

[0036] Figure 3 It is a schematic structural diagram of an embodiment of the heart rate monitoring device provided by the present invention;

[0037] Figure 4 It is a schematic structural diagram of an embodiment of the heart rate monitoring device provided by the present invention. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below with reference to specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are denoted by related similar element numbers. In the following embodiments, many detailed descriptions are provided to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification, which is to avoid overwhelming the core part of the present application with excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the descriptions in the specification and general technical knowledge in the art.

[0039] In addition, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can also be reordered or adjusted in a manner obvious to those skilled in the art. Therefore, the various sequences in the specification and drawings are only for clearly describing a certain embodiment and do not mean a necessary sequence, unless it is stated that a certain sequence must be followed.

[0040] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. And the "connection" and "coupling" mentioned in the present application, unless otherwise specified, both include direct and indirect connection (coupling).

[0041] The normal heart rate range for adults is 60 - 100 bpm, and the normal heart rate ranges for children are as follows: for newborns, it is 120 - 140 bpm; for children within 1 year old, it is 110 - 130 bpm; for children aged 2 - 3 years old, it is 100 - 120 bpm; and for children aged 3 - 6 years old, it is 90 - 110 beats per minute. Since the two are very different, heart rate monitoring devices on the market are usually divided into two categories: adult type and child type. Since the heart rate of children is much higher than that of adults, the sampling frequency of child-type heart rate monitoring devices is also much higher than that of adult-type heart rate monitoring devices. The high sampling frequency results in high device power consumption. For heart rate monitoring devices powered by batteries, such as wearable heart rate monitoring devices, the high power consumption will reduce the device's battery life, requiring frequent charging or battery replacement, which will not only deteriorate the user experience, but also pose a certain safety hazard if the device runs out of power during use and the user forgets to charge or replace the battery. To address the above problems, the present application is dedicated to reducing the power consumption of heart rate monitoring devices to improve the device's battery life and enhance the user experience.

[0042] Figure 1 It is a flowchart of an embodiment of the heart rate monitoring method provided by the present invention, and this method can be applied to a heart rate monitoring device. As Figure 1As shown in the figure, the heart rate monitoring method provided in this embodiment may include:

[0043] S101. Monitor the user's heart rate at a preset sampling frequency to obtain the user's stable heart rate value.

[0044] After the heart rate monitoring device is powered on, it monitors the user's heart rate at a preset sampling frequency. Among them, the preset sampling frequency is a fixed value, which can be determined according to the maximum heart rate value that the heart rate monitoring device can monitor, and it is the highest sampling frequency of the heart rate monitoring device.

[0045] Monitor the user's heart rate at a preset sampling frequency. After the obtained value is stable, record this value, which is the user's stable heart rate value. This process usually lasts for several seconds, that is, continuously monitor the user's heart rate at a preset high sampling frequency for several seconds to obtain the user's stable heart rate value.

[0046] S102. Gradually reduce the sampling frequency by a first preset step size based on the preset sampling frequency, and calculate the difference between the user's heart rate value obtained at each sampling frequency and the stable heart rate value.

[0047] The sampling frequency of existing heart rate monitoring devices is usually determined according to the maximum heart rate value that can be monitored and is fixed. As children grow older, their heart rate values gradually decrease. Moreover, whether it is children or adults, the individual differences in heart rate values are significant. Therefore, a fixed high sampling frequency usually causes oversampling. Oversampling does not improve accuracy, but will lead to a significant increase in data processing volume and power consumption.

[0048] S103. Determine the lowest sampling frequency with a difference less than the preset threshold as the first target frequency, reduce the sampling frequency to the first target sampling frequency, and monitor the user's heart rate at the first target sampling frequency.

[0049] This embodiment is described by taking the preset sampling frequency as 60Hz and the first preset step size as 10Hz as an example. After obtaining the user's stable heart rate value, first reduce the sampling frequency to 50Hz, monitor the user's heart rate at a sampling frequency of 50Hz, determine the user's heart rate value obtained at a sampling frequency of 50Hz, and calculate the difference from the stable heart rate value. If the difference is less than the preset threshold, continue to reduce the sampling frequency to 40Hz, monitor the user's heart rate at a sampling frequency of 40Hz, determine the user's heart rate value obtained at a sampling frequency of 40Hz, and calculate the difference from the stable heart rate value. If the difference is less than the preset threshold, continue to reduce the sampling frequency to 30Hz, monitor the user's heart rate at a sampling frequency of 30Hz, determine the user's heart rate value obtained at a sampling frequency of 30Hz, and calculate the difference from the stable heart rate value. If the difference is greater than the preset threshold at this time, the first target sampling frequency is 40Hz, and the heart rate monitoring device adjusts the sampling frequency to 40Hz.

[0050] In this embodiment, the individual differences in the user's heart rate value are fully considered, and the sampling frequency is reduced according to the user's stable heart rate value. To ensure the accuracy of heart rate monitoring, the difference between the user's heart rate value obtained at the first target sampling frequency and the stable heart rate value in this embodiment needs to be less than a preset threshold. The preset threshold can be set according to the accuracy requirements of heart rate monitoring. The higher the monitoring accuracy requirement, the smaller the preset threshold.

[0051] In this embodiment, after determining the first target sampling frequency and reducing the sampling frequency to the first target sampling frequency, the heart rate monitoring device continuously monitors the user's heart rate at the first target sampling frequency. Since the first target sampling frequency is lower than the preset sampling frequency, the power consumption of the heart rate monitoring device can be reduced.

[0052] In one embodiment, the range of the first target sampling frequency is greater than or equal to 40 Hz and less than or equal to 100 Hz.

[0053] The heart rate monitoring method provided in this embodiment monitors the user's heart rate at a preset sampling frequency to obtain the user's stable heart rate value; and according to the user's stable heart rate value, gradually reduces the sampling frequency to the first target sampling frequency by a first preset step; then monitors the user's heart rate at the first target sampling frequency. By making full use of the individual differences in heart rate values, the power consumption of the heart rate monitoring device is reduced on the premise of ensuring the accuracy of heart rate monitoring. For a heart rate monitoring device powered by a battery, the battery life of the device can also be improved, enhancing the user experience.

[0054] On the basis of the above embodiment, in order to further reduce the power consumption of the heart rate monitoring device, the method provided in this embodiment can determine the first target sampling frequency as a transition sampling frequency; gradually reduce the sampling frequency by a second preset step based on the transition sampling frequency, and calculate the difference between the user's heart rate value obtained at each sampling frequency and the stable heart rate value; determine the lowest sampling frequency with a difference less than the preset threshold as the second target sampling frequency, reduce the sampling frequency to the second target sampling frequency, and monitor the user's heart rate at the second target sampling frequency, where the first preset step is greater than the second preset step. The method provided in this embodiment first performs a rough adjustment with a larger first preset step, which can quickly approach the first target sampling frequency; then performs a fine adjustment with a smaller second preset step, which can determine a more accurate second target sampling frequency.

[0055] Taking the preset sampling frequency as 60 Hz, the first preset step size as 10 Hz, and the second preset step size as 1 Hz as an example for illustration. After obtaining the stable heart rate value of the user, first reduce the sampling frequency to 50 Hz, monitor the user's heart rate at a sampling frequency of 50 Hz, determine the user's heart rate value obtained at a sampling frequency of 50 Hz, and calculate the difference from the stable heart rate value. If the difference is less than the preset threshold, continue to reduce the sampling frequency to 40 Hz, monitor the user's heart rate at a sampling frequency of 40 Hz, determine the user's heart rate value obtained at a sampling frequency of 40 Hz, and calculate the difference from the stable heart rate value. If the difference is less than the preset threshold, continue to reduce the sampling frequency to 30 Hz, monitor the user's heart rate at a sampling frequency of 30 Hz, determine the user's heart rate value obtained at a sampling frequency of 30 Hz, and calculate the difference from the stable heart rate value. If the difference is greater than the preset threshold at this time, determine the transition sampling frequency as 40 Hz. Then, taking 40 Hz as the benchmark, first reduce the sampling frequency to 39 Hz, monitor the user's heart rate at a sampling frequency of 39 Hz, determine the user's heart rate value obtained at a sampling frequency of 39 Hz, and calculate the difference from the stable heart rate value. If the difference is less than the preset threshold, continue to reduce the sampling frequency to 38 Hz, monitor the user's heart rate at a sampling frequency of 38 Hz, determine the user's heart rate value obtained at a sampling frequency of 38 Hz, and calculate the difference from the stable heart rate value. If the difference is less than the preset threshold, continue to reduce the sampling frequency to 37 Hz, monitor the user's heart rate at a sampling frequency of 37 Hz, determine the user's heart rate value obtained at a sampling frequency of 37 Hz, and calculate the difference from the stable heart rate value. If the difference is greater than the preset threshold at this time, determine the second target sampling frequency as 38 Hz. Through two-stage adjustment, the second target sampling frequency can be determined quickly and accurately.

[0056] Based on the above embodiments, the method provided in this embodiment further includes: recording the correspondence between the stable heart rate value and the second target sampling frequency. This correspondence can be represented by a table, for example. As shown in Table 1, Table 1 is a correspondence table between the stable heart rate value and the second target sampling frequency provided in an embodiment. It should be noted that the values in Table 1 are only for illustration and are not limited thereto. Subsequently, the heart rate monitoring device can be calibrated through this correspondence.

[0057] Table 1

[0058] Stable heart rate value (bpm) Second target sampling frequency (Hz) 140 60 120 50 100 45 80 40

[0059] The process of measuring heart rate based on optics usually includes: a heart rate monitoring device emits an optical signal to the user to be monitored through a light source, receives the reflected light or transmitted light of the optical signal through a photoelectric sensor, and converts it into an electrical signal, and determines the user's heart rate according to the electrical signal of the photoelectric sensor. In this process, there are various factors that can interfere with the measurement accuracy. For example, different skin colors have different light absorption rates, and the darker the skin color, the more light is absorbed; different body parts also have different light absorption rates; the distance between the heart rate monitoring device and the user's skin is different, and the loss of the optical signal is also different. Therefore, the power of the light source can be adjusted according to the skin color, the wearing position, and the distance between the heart rate monitoring device and the user's skin. For example, when the distance between the heart rate monitoring device and the user's skin is large, the power of the light source can be increased; for users with darker skin colors, the power of the light source can be increased, while for users with lighter skin colors, the power of the light source can be decreased.

[0060] On the one hand, in order to reduce the influence of interference factors on the accuracy of heart rate monitoring, and on the other hand, in order to optimize power control, based on the above embodiments, the method provided in this embodiment may further include: adjusting the power of the light source of the heart rate monitoring device according to the intensity of the optical signal received by the photoelectric sensor of the heart rate monitoring device. Specifically, if the intensity of the received optical signal is greater than the preset intensity, the power of the light source is reduced; if the intensity of the received optical signal is less than the preset intensity, the power of the light source is increased.

[0061] To ensure accuracy, the intensity of the optical signal received by the photoelectric sensor needs to reach the preset intensity. And to achieve the same intensity, the light source power required for users with different skin colors is different. Users with lighter skin colors only need a smaller power, while users with darker skin colors need a larger power; when the distance between the heart rate monitoring device and the user's skin is small, only a smaller power is required, while when the distance between the heart rate monitoring device and the user's skin is large, a larger power is required. In this embodiment, by detecting the intensity of the optical signal received by the photoelectric sensor of the heart rate monitoring device and adjusting the power of the light source of the heart rate monitoring device accordingly, not only can the accuracy of heart rate monitoring be improved, but also the power control is optimized.

[0062] In addition, for a transmissive heart rate monitoring device, the optical signal needs to penetrate from one side of the human body to the other side to reach the sensing module, resulting in very high device power consumption. Therefore, in order to reduce power consumption, the heart rate monitoring device can adopt a reflective detection method, and the optical signal does not need to pass through the entire human tissue.

[0063] After the existing heart rate monitoring device is powered on, as long as the device has power, it will always be in a high-frequency working state. This leads to unnecessary power waste when the user is doing accurate work after power-on, or when the user forgets to turn off the device after the monitoring is completed. Therefore, in order to further reduce the power consumption of the heart rate monitoring device, the method provided in this embodiment may further include: detecting whether the heart rate monitoring device is worn on the user; if the heart rate monitoring device is not worn on the user, enter the standby state.

[0064] Specifically, a capacitance sensor can be set at the part where the heart rate monitoring device contacts the user, and whether the heart rate monitoring device is worn is detected by the change of the capacitance value in the capacitance sensor. The human body will affect the capacitance value of the capacitance sensor. When the capacitance value of the capacitance sensor becomes larger, it is determined that the heart rate monitoring device is worn on the user, otherwise, it is determined that the heart rate monitoring device is not worn on the user. Detecting according to the change of the capacitance value can accurately judge whether the heart rate monitoring device is worn on the user. In this embodiment, methods such as distance detection and infrared detection can also be used to judge whether the heart rate monitoring device is worn on the user.

[0065] When it is determined that the heart rate monitoring device is not worn on the user, the heart rate monitoring device enters the standby state. The so-called standby state is a low-power state of the device. In the standby state, the device does not perform heart rate monitoring. The method provided in this embodiment, on the basis of the above embodiment, further reduces the power consumption of the heart rate monitoring device by performing wearing detection and entering the low-power standby state when the device is not worn.

[0066] It should be noted that the heart rate monitoring device can continuously perform wearing detection in the powered-on state to quickly respond to changes in the usage state. After power-on, if it is detected that it is not worn, it enters the standby state; in the standby state, if it is detected that it is in the worn state, it enters the working state to perform heart rate monitoring; in the working state, if it is detected that it is not worn (such as after the detection is completed, the user is changed, etc.), it re-enters the standby state.

[0067] Figure 2 This is a flowchart of another embodiment of the heart rate monitoring method provided by the present invention, which is applied to a heart rate monitoring device. As Figure 2 shown, the method provided in this embodiment may include:

[0068] S201. Enter the standby state. After the heart rate monitoring device is powered on, it can first enter the low-power standby state. In the standby state, step S202 is continuously executed.

[0069] S202. Detect whether the heart rate monitoring device is worn on the user. Specifically, it can be detected by a capacitance sensor, an infrared sensor, etc. If the heart rate monitoring device is worn on the user, step S203 is executed; if the heart rate monitoring device is not worn on the user, the standby state is continued, and whether the heart rate monitoring device is worn on the user is continuously detected.

[0070] S203. Monitor the user's heart rate at a preset sampling frequency to obtain the user's stable heart rate value.

[0071] S204. Gradually reduce the sampling frequency by a first preset step length based on the preset sampling frequency, and calculate the difference between the user's heart rate value obtained at each sampling frequency and the stable heart rate value.

[0072] S205. Determine the lowest sampling frequency with a difference less than the preset threshold as the first target sampling frequency, and reduce the sampling frequency to the first target sampling frequency.

[0073] S206. Monitor the user's heart rate at the first target sampling frequency. During the process of monitoring the user's heart rate at the first target sampling frequency, step S207 is continuously executed.

[0074] S207. Detect whether the heart rate monitoring device is worn on the user. If the heart rate monitoring device is worn on the user, step S203 is executed; if the heart rate monitoring device is not worn on the user, step S201 is executed.

[0075] The method provided in this embodiment not only reduces the device power consumption by reducing the sampling frequency, but also enters the low-power standby state and stops heart rate monitoring when it is detected that the heart rate monitoring device is not worn on the user, so as to further reduce the device power consumption.

[0076] Figure 3 It is a schematic structural diagram of an embodiment of a heart rate monitoring device provided by the present invention. As Figure 3 shown, the heart rate monitoring device 30 provided in this embodiment may include:

[0077] A preprocessing module 301 for monitoring the user's heart rate at a preset sampling frequency to obtain the user's stable heart rate value;

[0078] An adjustment module 302 for gradually reducing the sampling frequency by a first preset step length based on the preset sampling frequency, and calculating the difference between the user's heart rate value obtained at each sampling frequency and the stable heart rate value;

[0079] The monitoring module 303 is configured to determine the lowest sampling frequency with a difference less than a preset threshold as the first target frequency, reduce the sampling frequency to the first target sampling frequency, and monitor the user's heart rate at the first target sampling frequency.

[0080] The heart rate monitoring device provided in this embodiment can be used to execute Figure 1 the technical solutions of the corresponding method embodiment. The implementation principle and technical effects are similar and will not be elaborated here.

[0081] In one embodiment, the range of the first target sampling frequency is greater than or equal to 40 Hz and less than or equal to 100 Hz.

[0082] In one embodiment, the adjustment module 302 is further configured to determine the first target sampling frequency as the transition sampling frequency; gradually reduce the sampling frequency with a second preset step size based on the transition sampling frequency, and calculate the difference between the user's heart rate value obtained at each sampling frequency and the stable heart rate value; the monitoring module 303 is further configured to determine the lowest sampling frequency with a difference less than a preset threshold as the second target frequency, reduce the sampling frequency to the second target sampling frequency, and monitor the user's heart rate at the second target sampling frequency. The first preset step size is greater than the second preset step size.

[0083] In one embodiment, the heart rate monitoring device 30 may further include a recording module (not shown in the figure) for recording the corresponding relationship between the stable heart rate value and the second target sampling frequency.

[0084] In one embodiment, the adjustment module 302 is further configured to adjust the power of the light source of the heart rate monitoring device according to the intensity of the optical signal received by the photoelectric sensor of the heart rate monitoring device.

[0085] In one embodiment, the adjustment module 302 is configured to adjust the power of the light source of the heart rate monitoring device according to the intensity of the optical signal received by the photoelectric sensor of the heart rate monitoring device, which may specifically include:

[0086] If the received optical signal intensity is greater than the preset intensity, reduce the power of the light source;

[0087] If the received optical signal intensity is less than the preset intensity, increase the power of the light source.

[0088] In one embodiment, the heart rate monitoring device 30 may further include a detection module (not shown in the figure) for detecting whether the heart rate monitoring device is worn on the user; if the heart rate monitoring device is not worn on the user, enter the standby state.

[0089] The embodiment of the present invention further provides a heart rate monitoring device. Please refer to Figure 4 as shown. The embodiment of the present invention only takes Figure 4For illustration purposes, it does not mean that the present invention is limited thereto. Figure 4 FIG. is a schematic structural diagram of an embodiment of the heart rate monitoring device provided by the present invention. The heart rate monitoring device may be an intelligent device with a heart rate monitoring function, such as a smart bracelet, a smart watch, smart socks, etc. As Figure 4 shown, the heart rate monitoring device 40 provided in this embodiment may include: a memory 401, a processor 402, and a bus 403. Among them, the bus 403 is used to realize the connection between various components.

[0090] A computer program is stored in the memory 401, and when the computer program is executed by the processor 402, the technical solution of the heart rate monitoring method provided in any of the above method embodiments can be realized.

[0091] Among them, the memory 401 and the processor 402 are directly or indirectly electrically connected to realize data transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses or signal lines, such as being connected through the bus 403. A computer program for realizing the heart rate monitoring method is stored in the memory 401, including at least one software function module that can be stored in the memory 401 in the form of software or firmware. The processor 402 executes various function applications and data processing by running the software programs and modules stored in the memory 401.

[0092] The memory 401 may be, but is not limited to, a random access memory (Random Access Memory, abbreviated as RAM), a read-only memory (Read Only Memory, abbreviated as ROM), a programmable read-only memory (Programmable Read-Only Memory, abbreviated as PROM), an erasable programmable read-only memory (Erasable Programmable Read-Only Memory, abbreviated as EPROM), an electrically erasable programmable read-only memory (Electric Erasable Programmable Read-Only Memory, abbreviated as EEPROM), etc. Among them, the memory 401 is used to store programs, and the processor 402 executes the programs after receiving the execution instructions. Further, the software programs and modules in the above memory 401 may further include an operating system, which may include various software components and / or drivers for managing system tasks (such as memory management, storage device control, power management, etc.), and may communicate with various hardware or software components to provide a running environment for other software components.

[0093] The processor 402 can be an integrated circuit chip with the ability to process signals. The above-mentioned processor 402 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc. It can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. It can be understood that Figure 4 the structure of is only schematic, and it can also include more or fewer components than Figure 4 shown in, or have a different configuration from Figure 4 shown in. Figure 4 Each component shown in can be implemented by hardware and / or software.

[0094] For example, the heart rate monitoring device 40 provided in this embodiment can further include a light source for emitting an optical signal to the user; a photoelectric sensor for receiving the reflected light or transmitted light of the optical signal and converting it into an electrical signal; the processor 402 is further configured to determine the heart rate of the user according to the electrical signal of the photoelectric sensor.

[0095] This article is described with reference to various exemplary embodiments. However, those skilled in the art will recognize that changes and modifications can be made to the exemplary embodiments without departing from the scope of this article. For example, the various operation steps and the components for performing the operation steps can be implemented in different ways according to a specific application or considering any number of cost functions associated with the operation of the system (for example, one or more steps can be deleted, modified, or combined into other steps).

[0096] In addition, as understood by those skilled in the art, the principles herein can be embodied in a computer program product on a computer-readable storage medium, which is preloaded with computer-readable program code. Any tangible, non-transitory computer-readable storage medium can be used, including magnetic storage devices (hard disks, floppy disks, etc.), optical storage devices (CD-ROM, DVD, Blu Ray disks, etc.), flash memory, and / or the like. These computer program instructions can be loaded onto a general-purpose computer, a special-purpose computer, or other programmable data processing devices to form a machine, such that the instructions executed on the computer or other programmable data processing devices can generate a device for implementing the specified functions. These computer program instructions can also be stored in a computer-readable memory, which can direct the computer or other programmable data processing devices to operate in a specific manner, so that the instructions stored in the computer-readable memory can form a manufactured article, including an implementation device for implementing the specified functions. The computer program instructions can also be loaded onto a computer or other programmable data processing devices, thereby performing a series of operation steps on the computer or other programmable devices to generate a computer-implemented process, such that the instructions executed on the computer or other programmable devices can provide steps for implementing the specified functions.

[0097] The above uses specific examples to illustrate the present invention, which is only for helping to understand the present invention and is not intended to limit the present invention. For those skilled in the art of the present invention, based on the idea of the present invention, several simple deductions, deformations, or substitutions can also be made.

Claims

1. A heart rate monitoring method, applied to a heart rate monitoring device, characterized in that: include: Monitor the user's heart rate at a preset sampling frequency to obtain the user's stable heart rate value; The sampling frequency is gradually reduced by using a first preset step length based on the preset sampling frequency, and the difference between the user's heart rate value obtained at each sampling frequency and the stable heart rate value is calculated respectively; Determine the lowest sampling frequency whose difference is less than a preset threshold as a first target frequency, reduce the sampling frequency to the first target sampling frequency, and monitor the user's heart rate at the first target sampling frequency; The first target sampling frequency range is greater than or equal to 40 Hz and less than or equal to 100 Hz; Determining the first target sampling frequency as a transition sampling frequency; The sampling frequency is gradually reduced using a second preset step length based on the transition sampling frequency, and the difference between the user's heart rate value obtained at each sampling frequency and the stable heart rate value is calculated respectively; The lowest sampling frequency whose difference is less than a preset threshold is determined as the second target sampling frequency, the sampling frequency is reduced to the second target sampling frequency, and the user's heart rate is monitored at the second target sampling frequency, and the first preset step size is greater than the second preset step size.

2. The heart rate monitoring method according to claim 1, characterized in that: The method further comprises: The corresponding relationship between the stable heart rate value and the second target sampling frequency is recorded.

3. The heart rate monitoring method according to claim 2, characterized in that: The method further comprises: The power of the light source of the heart rate monitoring device is adjusted according to the intensity of the light signal received by the photoelectric sensor of the heart rate monitoring device.

4. The heart rate monitoring method according to claim 3, characterized in that: The step of adjusting the power of the light source of the heart rate monitoring device according to the intensity of the light signal received by the photoelectric sensor of the heart rate monitoring device comprises: If the intensity of the received optical signal is greater than a preset intensity, reducing the power of the light source; If the intensity of the received optical signal is less than the preset intensity, the power of the light source is increased.

5. The heart rate monitoring method according to claim 4, characterized in that: The method further comprises: Detecting whether the heart rate monitoring device is worn by the user; If the heart rate monitoring device is not worn by the user, it enters a standby state.

6. A heart rate monitoring device, characterized in that: include: A preprocessing module is used to monitor the user's heart rate at a preset sampling frequency to obtain a stable heart rate value of the user; An adjustment module, configured to gradually reduce the sampling frequency by using a first preset step length based on the preset sampling frequency, and respectively calculate the difference between the user's heart rate value obtained at each sampling frequency and the stable heart rate value; A monitoring module, configured to determine the lowest sampling frequency in which the difference is less than a preset threshold as a first target frequency, reduce the sampling frequency to the first target sampling frequency, and perform heart rate monitoring on the user at the first target sampling frequency; The first target sampling frequency range is greater than or equal to 40 Hz and less than or equal to 100 Hz; The adjustment module is further used to determine the first target sampling frequency as a transition sampling frequency; The sampling frequency is gradually reduced using a second preset step length based on the transition sampling frequency, and the difference between the user's heart rate value obtained at each sampling frequency and the stable heart rate value is calculated respectively; The monitoring module is also used to determine the lowest sampling frequency whose difference is less than a preset threshold as the second target sampling frequency, reduce the sampling frequency to the second target sampling frequency, monitor the user's heart rate at the second target sampling frequency, and the first preset step size is greater than the second preset step size.

7. A heart rate monitoring device, characterized in that: include: at least one processor and memory; The memory stores computer-executable instructions; The at least one processor executes the computer-executable instructions stored in the memory, so that the at least one processor performs the heart rate monitoring method as described in any one of claims 1-5.

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