Heart rate testing method, system, terminal device, and computer-readable storage medium

Abstract

The present application pertains to the technical field of heart rate testing and provides a heart rate testing method, system, terminal device, and computer-readable storage medium. The method comprises: a control device sending a first signal to a signal reflection apparatus, wherein the first signal comprises a rotation frequency; the signal reflection apparatus, after receiving the first signal, reflecting, according to the rotation frequency, a second signal sent by earphones to be tested, so that the earphones to be tested obtain a reflected third signal; the earphones to be tested performing signal processing according to the third signal to obtain a fourth signal, and sending the fourth signal to the control device; and the control device, after receiving the fourth signal, performing a comparison according to the fourth signal and the rotational speed to test the performance of the earphones. The described method can improve the test accuracy of earphone heart rate testing, and the test process is simple and convenient, improving the test efficiency of earphone heart rate testing.

Description

Heart rate test method, system, terminal device and computer readable storage medium

[0001] The present application claims priority from the Chinese patent application No. 202410871004.0 filed on July 01, 2024 in the China Patent Office and entitled "Heart rate test method, system, terminal device and computer readable storage medium", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application belongs to the technical field of computers, and particularly relates to a heart rate test method, system, terminal device and computer readable storage medium. BACKGROUND

[0003] Heart rate is one of the important indicators reflecting the physiological state of the human body. By real-time monitoring of heart rate through earphones, users can better understand their own health status, especially when exercising, and can adjust the exercise intensity according to the heart rate to avoid overtraining. In order to ensure that the heart rate detection function of each earphone before leaving the factory is normal and the heart rate detection accuracy meets the product technical specifications, it is particularly important in actual production.

[0004] In related methods, accurate test data of heart rate cannot be obtained, and the accuracy of the heart rate test function of the earphone cannot be guaranteed. Through a large amount of data research, we select the auricle part rich in red blood cells as the detection part, effectively reduce the interference of natural light and artificial light source, and adopt multi-directional monitoring technology to make the heart rate data more reliable. TECHNICAL PROBLEM

[0005] The embodiments of the present application provide a heart rate test method, system, terminal device and computer readable storage medium, which can improve the test accuracy of the earphone heart rate test, and the test process is simple, thereby improving the test efficiency of the earphone heart rate test. TECHNICAL SOLUTION

[0006] The embodiments of the present application provide a heart rate test method, system, terminal device and computer readable storage medium, which can improve the test accuracy of the earphone heart rate test, and the test process is simple, thereby improving the test efficiency of the earphone heart rate test.

[0007] In a first aspect, the embodiments of the present application provide a screenshot method, comprising:

[0008] The control device sends a first signal to the signal reflection device, wherein the first signal comprises a rotation frequency;

[0009] After receiving the first signal, the signal reflection device reflects a second signal sent by the earphone to be tested according to the rotation frequency, so that the earphone to be tested acquires a third signal after reflection;

[0010] The earphone under test performs signal processing on the third signal to obtain a fourth signal, and sends the fourth signal to the control device.

[0011] The control device receives the fourth signal, and tests the performance of the earphone under test according to the fourth signal and the rotation frequency.

[0012] Further, the signal reflection device comprises a rotating disc, and the rotating disc comprises a reflecting surface.

[0013] The step of reflecting, by the signal reflection device, the second signal sent by the earphone under test according to the rotation frequency comprises:

[0014] The signal reflection device rotates the rotating disc according to the rotation frequency, so that the reflecting surface on the rotating disc reflects the second signal sent by the earphone under test.

[0015] Further, the earphone under test performs signal processing on the third signal to obtain a fourth signal, and the signal processing comprises:

[0016] The earphone under test acquires the alternating current signal in the third signal.

[0017] The earphone under test performs time domain analysis on the alternating current signal to obtain a time domain feature of the alternating current signal.

[0018] The earphone under test generates a detection value according to the time domain feature, and the fourth signal is the detection value.

[0019] Further, when testing the heart rate performance of the earphone under test, the detection value is a heart rate value.

[0020] The earphone under test generates a detection value according to the time domain feature, and the signal processing comprises:

[0021] The earphone under test acquires a number of signal wave crests within a preset time according to the time domain feature.

[0022] The earphone under test determines a heart rate value according to the number of signal wave crests.

[0023] Further, the step of testing, by the control device, the performance of the earphone under test according to the fourth signal and the rotation frequency comprises:

[0024] The control device calculates a difference value between the heart rate value and a preset value corresponding to the rotation frequency.

[0025] If the difference value is within a preset error, it is determined that the performance of the earphone under test is qualified.

[0026] In a second aspect, an embodiment of the present application provides a screenshot device, comprising:

[0027] The control device and the signal reflection device, and the heart rate testing system is configured to implement the testing method of any one of the above first aspect.

[0028] Further, the heart rate test system further comprises a Bluetooth device; the Bluetooth device is connected with the signal reflection device and the control device respectively; the control device communicates with the signal reflection device through the Bluetooth device.

[0029] In a possible implementation of the second aspect, the signal reflection device comprises a rotating disc, and the rotating disc comprises a reflection surface configured to reflect the signal transmitted by the earphone to be tested.

[0030] In a possible implementation of the second aspect, the different reflection areas have the same area and different materials.

[0031] Further, each reflection area comprises a transition area, the different transition areas have the same area and the same material, and the transition area is configured to smooth the reflected signal.

[0032] Further, the signal reflection device further comprises a driving device, the driving device is connected with the control device and the rotating disc respectively, and the control device communicates with the signal reflection device through the Bluetooth device.

[0033] Further, the signal reflection device comprises an earphone fixture, the earphone fixture is fixed above the rotating disc and is configured to fix the earphone to be tested and transmit the signal.

[0034] Further, the earphone fixture further comprises an earphone fixing fixture, the earphone fixing fixture is configured to fix the earphone to be tested.

[0035] Further, the earphone fixture further comprises a sleeve, the sleeve is connected with the earphone fixing fixture, and the sleeve is configured to transmit the signal.

[0036] Further, the sleeve further comprises a reflective sticker, the reflective sticker is arranged on an inner wall of the sleeve, and the reflective sticker is configured to amplify the reflected signal.

[0037] In a third aspect, an embodiment of the present application provides a terminal device, comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and the processor implements the heart rate test method of the first aspect when executing the computer program.

[0038] In a fourth aspect, an embodiment of the present application provides a computer readable storage medium, the computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement the heart rate test method of the first aspect.

[0039] In a fifth aspect, an embodiment of the present application provides a computer program product, when the computer program product is run on a terminal device, the terminal device executes the screenshot method of any one of the first aspect.

[0040] It can be understood that the beneficial effects of the second aspect to the fifth aspect described above can be referred to the related description in the first aspect described above, and will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0042] Fig. 1 is a schematic diagram of a heart rate test system according to an embodiment of the present application;

[0043] Fig. 2 is a schematic diagram of a heart rate test system according to an embodiment of the present application;

[0044] Fig. 3 is a schematic diagram of a heart rate test system according to an embodiment of the present application;

[0045] Fig. 4 is a heart rate carousel of an earphone heart rate test system according to an embodiment of the present application;

[0046] Fig. 5 is a simulation signal waveform according to an embodiment of the present application;

[0047] Fig. 6 is a schematic diagram of a heart rate test system according to an embodiment of the present application;

[0048] Fig. 7 is a schematic diagram of a heart rate test system according to an embodiment of the present application;

[0049] Fig. 8 is a schematic diagram of a heart rate test system according to an embodiment of the present application;

[0050] Fig. 9 is a schematic diagram of a heart rate test system according to an embodiment of the present application;

[0051] Fig. 10 is a schematic diagram of the overall structure of a heart rate test system according to an embodiment of the present application;

[0052] Fig. 11 is a flowchart of a test method according to an embodiment of the present application;

[0053] Fig. 12 is a schematic diagram of acquiring a fourth signal according to an embodiment of the present application;

[0054] Fig. 13 is a schematic diagram of a terminal device according to an embodiment of the present application. Embodiments of the present application

[0055] In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular architectures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application can be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known methods, devices, circuits, and

[0056] It is to be understood that the terminology "includes", "has", "holds", "contains" or "comprising", "including", "having" and the like, when used in the present specification and in the accompanying claims, are used in the sense of "including but not limited to", "including but not limited to", "including but not limited to" and "including but not limited to" respectively, and should be construed as specifically setting forth the stated features, integers, steps or components but not precluding one or more additional features, integers, steps, components and / or groups thereof.

[0057] It is also to be understood that the terminology "and / or" as used in the present specification and in the accompanying claims, refers to one or more of the associated listed items, in any combination and all possible combinations, and includes these combinations.

[0058] As used in the present specification and in the accompanying claims, the term "if" can be interpreted as meaning "when" or "once" or "in response to a determination" or "in response to detecting" depending on the context. Similarly, the phrase "if it is determined" or "if [a described condition or event] is detected" can be interpreted to mean "once it is determined" or "in response to a determination" or "once [the described condition or event] is detected" or "in response to detecting [a described condition or event]", depending on the context.

[0059] In addition, the terms "first", "second", "third", etc. as used in the description of the specification and the appended claims are not used to denote or imply relative importance but are used to distinguish one element from another.

[0060] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Thus, the appearances of the phrases "in one embodiment", "in some embodiments", "in other embodiments", "in additional embodiments", and so on, in various places throughout this specification are not necessarily all referring to the same embodiment, unless otherwise specified. The terms "comprise", "comprising", "has", "having", "includes" and "including" and the like are synonymous with "including but not limited to", unless otherwise specified.

[0061] Reference within the specification of this application to "one embodiment" or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase "in one embodiment" or "in some embodiments" in various places within specified

[0062] Heart rate is one of the important indicators reflecting the physiological state of the human body. By real-time monitoring of heart rate through earphones, users can better understand their own health status, especially when exercising, they can adjust the intensity of exercise according to the heart rate to avoid overtraining. In order to ensure that the heart rate detection function of each earphone before leaving the factory is normal, and the heart rate detection accuracy meets the product technical specifications, it is particularly important in actual production.

[0063] In the related method, accurate test data of heart rate cannot be obtained, and the accuracy of the earphone heart rate test function cannot be guaranteed. After a large amount of data research, we selected the auricle part rich in red blood cells as the detection part, effectively reduced the interference of natural light and artificial light source, and adopted multi-directional monitoring technology, so that the heart rate data is more reliable.

[0064] In order to solve the problems in the above-mentioned related method, the embodiment of the application provides an earphone heart rate test system. In the application, a suitable material and environment are found to build a heart rate test system, which is used to simulate the heart rate parameters when the earphone is worn in the real human body environment. Through the heart rate test system, the signal emitted by the earphone to be tested is absorbed or reflected by the related material in the system, which can simulate the absorption and reflection function of human skin to light. The signal processor of the earphone to be tested acquires the reflected signal of the signal emitted by the earphone to be tested according to the heart rate test system, analyzes the reflected signal, calculates the heart rate value detected by the earphone to be tested according to the information in the reflected signal, and finally compares the calculated heart rate value with the set preset value to judge the heart rate detection performance of the earphone to be tested. The above method improves the authenticity and effectiveness of the test, and improves the efficiency and accuracy of the test.

[0065] Referring to FIG. 1, it is a schematic diagram of the heart rate test system 1 according to the embodiment of the application. As shown in FIG. 1, the heart rate test system 5 includes a control device 11 and a signal reflection device 12, and the control device 11 is connected with the signal reflection device 12.

[0066] In the embodiments of the present application, the control device 11 is a component of the heart rate test system 5, which is responsible for sending control signals, receiving signals and performing corresponding control logic. The control device 11 sends control signals to the signal reflection device 12 to guide the test process. The control device 11 can be a personal computer (PC), and the PC can run special control software, which can exchange data and command control with field devices (such as machines, sensors, actuators, etc.) through various communication protocols.

[0067] The signal reflection device 12 is another key part of the heart rate test system 5, which is used to reflect or adjust signals during the test process. This device can contain various sensors, mirrors, modulators or other components for processing signals. The signal reflection device 12 receives control signals from the control device 11 and performs specific operations according to these signals. The control device 11 and the signal reflection device 12 are connected to ensure that the control device can effectively send instructions and receive feedback from the signal reflection device.

[0068] Specifically, the connection between the control device 11 and the signal reflection device 12 can communicate through a hardware interface protocol, such as RS32 program control protocol. When using the RS32 protocol for communication, the control device will send specific instructions to the controlled device, and the controlled device will perform corresponding operations according to these instructions. In order to ensure the correct implementation of the RS32 protocol communication, the interface hardware and software between the control device 11 and the signal reflection device need to be designed and configured according to the specifications of the protocol. This can include specific hardware interface cards, communication modules, and software tools for configuration and management, etc.

[0069] In the above heart rate test system, the connection between the control device 11 and the signal reflection device 12 can ensure that the control device 11 can effectively send instructions and receive feedback from the signal reflection device 12.

[0070] In one embodiment, referring to FIG. 2, which is a schematic diagram of the heart rate test system provided by the embodiments of the present application, as shown in FIG. 2, the heart rate test system 5 further includes a Bluetooth device 13; the control device 11 communicates with the signal reflection device 12 through the Bluetooth device 13.

[0071] In the embodiments of the present application, the Bluetooth device 13 is a kind of wireless communication device, which allows devices to exchange data within a short distance. Bluetooth technology is an open standard and is widely used in various devices.

[0072] Specifically, the Bluetooth device 13 can be a Bluetooth adapter that connects wirelessly with the signal reflection device 12. Its role is to transmit the data collected by the signal reflection device 12 to the Bluetooth adapter through Bluetooth wireless technology, and then connect between the Bluetooth adapter and the monitoring device 11 through a serial port, allowing data to be sent to the control device 11 through the serial port. This setup allows the signal reflection device to communicate with the control device within a wireless range while maintaining the stability and compatibility of serial communication.

[0073] It should be noted that the signal reflection device 12 communicates with the Bluetooth adapter through Bluetooth protocol, sending data or receiving instructions. This wireless communication method avoids the limitations of physical connections, improving the mobility and flexibility of the device. The Bluetooth adapter converts the received Bluetooth signals into serial port signals so that the control device 11 can read and process these signals.

[0074] In the above-mentioned heart rate test system, the wireless connection between the signal reflection device 12 and the Bluetooth device 13 makes the position of the reflection device more flexible, not limited by physical cables, facilitating installation and deployment. The serial port connection between the control device 11 and the Bluetooth device 13 usually provides higher data transmission stability and reliability, which is beneficial to the accurate transmission of control commands.

[0075] In one embodiment, referring to FIG. 3, it is a schematic diagram of the heart rate test system provided by the present application. As shown in FIG. 3, the signal reflection device 12 includes a turntable 121, which includes a reflecting surface 1211 for reflecting the signals sent by the earphone under test.

[0076] In the present application, the signal reflection device 12 also includes a turntable 121, which can be a physical device that can rotate or move. The turntable 121 is provided with a reflecting surface 1211. The reflecting surface 1211 can be a smooth surface, such as metal or other highly reflective materials, so that it can effectively reflect signals. In other applications, the reflecting surface 1211 can be a special coating or film that can adjust the characteristics of the reflected signals, such as reflectivity, as needed. The position and shape of the reflecting surface 1211 also affect the reflection effect.

[0077] Specifically, the turntable 121 can be a motorized turntable, which is a rotating device equipped with a motor to drive the rotating part of some mechanical equipment. The reflecting surface 1211 can be a two-color turntable to simulate the motion trajectory of heart rate. Suitable materials are selected, such as gray for high reflectivity and black for low reflectivity, with an intermediate transition area of reflectivity material. Under the drive of the motor, the turntable 121 rotates continuously, and the reflecting surface 1211 on the turntable can reflect the infrared light signals sent by the earphone under test.

[0078] In the heart rate test system, the rotation of the rotating disc enables the reflecting surface to reflect signals from different angles, increasing the diversity of signal coverage. The reflecting surface is directly arranged on the rotating disc, which can simplify the structural design of the device and reduce the complexity of the system.

[0079] In an embodiment, the reflecting surface 1211 includes two reflecting areas, and the reflectivities of different reflecting areas are different.

[0080] In the embodiment of the present application, the two reflecting areas are used to simulate the absorption or reflection intensity of infrared signals when the heart is diastolic and systolic. For example, one reflecting area can be designed to be highly reflective for reflecting most of the infrared signals. This reflecting area simulates the high density of hemoglobin when the heart is systolic, which reflects more infrared light. Another reflecting area can be low reflective or translucent for allowing part of the light to pass through. This reflecting area simulates the low density of hemoglobin when the heart is diastolic, which absorbs more infrared light, i.e., it is equivalent to reflecting less infrared light. The transition area is added to each reflecting area to smooth the reflected signal, so that the reflected signal is more consistent with the heart rate trajectory of the human body.

[0081] In an embodiment, the areas of different reflecting areas are the same, and the materials are different.

[0082] In the embodiment of the present application, when selecting the material, the two reflecting areas can be set to have different infrared signal reflectivities according to different colors (materials). For example, one reflecting area can be set to be gray, which represents a material with high reflectivity, and the other reflecting area can be set to be black, which represents a material with low reflectivity. The areas of the reflecting areas are equal, which means that the influence of each area on light or sound waves is the same. This design can ensure the uniformity and balance of the system.

[0083] In the heart rate test system, the design of the reflecting surface of the rotating disc takes into account the functional requirements of different areas. By changing the material (color) setting of the reflecting area, the actual environment of the human body is simulated, and the accuracy of the reflected signal is improved. At the same time, the same material of the transition area ensures smooth transition and stability of the entire system.

[0084] In an embodiment, each reflecting area includes a transition area, and the areas of different transition areas are the same, and the materials are the same. The transition area is used to smooth the reflected signal.

[0085] In the embodiment of the present application, each reflection area has a transition area. The role of the transition area is to smoothly transition between two reflection areas. The material of the transition area is set the same, which means that the infrared light propagation characteristics are uniform in the transition area, thereby ensuring the performance and stability of the entire system. The reflection area areas are equal, which means that the effect of each area on light or sound waves is the same on the entire reflective surface. This design can ensure the uniformity and balance of the system.

[0086] Referring to FIG. 4, it is a heart rate turntable of the earphone heart rate test system provided in the embodiment of the present application. As shown in FIG. 4, the heart rate turntable 121 is divided into two reflection areas m and reflection areas n which are equal on the left and right. The colors of the reflection areas m and the reflection areas n can be set as gray and black respectively. Gray represents a material with low infrared light absorption rate, and black represents a material with high infrared light absorption rate. In these two extreme reflectivity materials, a transition reflectivity material (its reflectivity is in the middle) is found, such as the transition area j and the transition area k in FIG. 4. Among them, the areas of the reflection areas m and the reflection areas n are equal, the reflectivities are different, the areas of the transition area j and the transition area k are equal, and the reflectivities are the same.

[0087] Referring to FIG. 5, it is a simulation signal waveform provided in the embodiment of the present application. As shown in FIG. 5, when only two reflection areas m and reflection areas n are used to reflect infrared signals, the obtained reflected signal is a square wave signal (as shown in o in FIG. 5). Therefore, by adding a transition area, a sine wave simulation signal can be generated instead of a square wave, which is closer to the actual electrocardiogram of the human body (as shown in p in FIG. 5).

[0088] Referring to FIG. 6, it is a schematic diagram of the earphone heart rate test device provided in the embodiment of the present application. As shown in FIG. 6, the signal reflection device 12 includes a driving device 52, which is connected with the control device 11 and the turntable 121 respectively. The control device 11 drives the signal reflection device 12 through the driving device 52.

[0089] In the embodiment of the present application, the driving device 52 is a component in the signal reflection device 12, which is responsible for executing the signals sent by the control device 11. These signals can include start, stop, speed adjustment, direction control.

[0090] Specifically, the driving device 52 can be a motor that receives the program control instruction containing the rotation frequency sent by the control device 11. When the motor receives the start signal sent by the control device 11, the motor starts to rotate at the rotation frequency contained in the signal. For example, if the motor receives the RS-232 program control instruction sent by the control device 11, which is a start signal for the motor to rotate at a rotation frequency of a, then the motor will perform the corresponding operation according to the instruction after receiving the instruction. The turntable 121 and the motor (driving device 52) can be mechanically connected, such as connecting the output shaft of the motor with the input shaft of the turntable, possibly using gears, belts, chains or other transmission devices. The control device 11 sends a control signal to the motor to adjust the operation of the motor to achieve the required rotation speed or rotation frequency, thereby driving the rotation of the motor turntable.

[0091] In one embodiment, referring to Figure 7, which is a schematic diagram of an earphone heart rate test device 5 provided by an embodiment of the present application, as shown in Figure 7, the heart rate test system further comprises an earphone jig 53 fixed above the turntable 121 for fixing the earphone to be tested and for transmitting signals.

[0092] In an embodiment of the present application, the earphone jig 53 generally refers to a special tool or device used to place the earphone to be tested, and its fixing method depends on its design and working principle. It can be fixed on the turntable 121 by screws, clamps or other fixing devices to ensure that the earphone to be tested maintains a stable position during the test. The earphone jig 53 can help the tester to accurately place the earphone, ensuring that the position and direction of the earphone are consistent every time the test is performed, and ensuring that the position and direction of the earphone to be tested that can transmit infrared light to the turntable through the earphone jig 53 are also consistent. This helps to reduce test errors and ensure the accuracy of test results.

[0093] In addition, the earphone jig 53 can also realize other functions, for example, it can be equipped with sensors or measuring devices to monitor the working state or performance parameters of the earphone. This helps the tester to better understand the working condition of the earphone and evaluate and analyze it.

[0094] In the above-mentioned heart rate test system, the earphone jig is fixed on the turntable, which can conveniently test earphones in different positions without the need to manually adjust the position of the earphone, improving the test efficiency. The rotation of the turntable in cooperation with the fixed earphone jig can accurately control the test position of the earphone, ensuring the consistency and accuracy of each test.

[0095] In one embodiment, referring to Figure 8, which is a schematic diagram of a heart rate test system 6 provided by an embodiment of the present application, as shown in Figure 8, the earphone jig 53 comprises an earphone fixing jig 54 for fixing the earphone to be tested.

[0096] In the embodiment of the present application, the earphone fixing jig 54 is a device for fixing the earphone to be tested, which can be a clamp, a bracket or other fixing device. The function of the earphone fixing jig 54 is to ensure that the earphone to be tested remains stable during the test and does not move due to the weight of the earphone or external interference.

[0097] In one embodiment, referring to FIG. 9, which is a schematic diagram of a blood oxygen test system 7 provided by the embodiment of the present application, as shown in FIG. 9, the earphone jig 53 further comprises a sleeve 55, which is connected with the earphone fixing jig 54, and the sleeve 55 is used for signal transmission.

[0098] In the embodiment of the present application, the sleeve 55 can be a hollow cylindrical structure, and the design of the sleeve aims to set the signal sent by the test earphone in a transmission path to ensure that the signal can be completely transmitted or reflected. It is also used to isolate external noise to ensure the accuracy of the test results.

[0099] The connection mode of the sleeve 55 and the earphone fixing jig 54 can be various, for example, they can be connected together through screws, buckles or other mechanical connection modes, and the sleeve 55 is fixed to the bottom of the earphone fixing jig 54, which is used for transmitting the signal sent by the earphone to be tested. In this way, the sleeve 55 and the earphone fixing jig 54 can work together to adapt and fix the earphone to be tested.

[0100] In the above-mentioned heart rate test system, the sleeve serves as a medium for signal transmission, which can provide a stable signal transmission path, reduce signal loss and interference, and thus improve the accuracy and reliability of the test. The earphone fixing jig can fix the position of the earphone to ensure that the position of the earphone relative to the test equipment is consistent during each test, thereby improving the accuracy of the test.

[0101] In one embodiment, the sleeve further comprises a reflective sticker, which is arranged on the inner wall of the sleeve.

[0102] In the embodiment of the present application, the reflective sticker can contain special materials such as metal powder or metal film, which can reflect signals of specific frequencies. The reflective sticker (also known as a mirror or a reflector) can be used to enhance the reflection of light. When light shines on the reflective sticker, the sticker will reflect the light back into the optical path of the device. This reflection can enhance the intensity of the light, thereby amplifying the reflected signal.

[0103] Specifically, when the earphone to be tested sends an infrared signal to the reflecting surface 1211 on the turntable 121 through the sleeve 55, part of the signal is absorbed by the reflecting surface 1211, and part of the signal is reflected to the inside of the sleeve 55. The reflective sticker on the inner wall of the sleeve 54 is used to amplify the weak reflected signal so that it can be collected by the sensor of the earphone to be tested.

[0104] The heart rate test system can reduce loss of reflected light and enhance reflected light by setting the reflective sticker on the inner wall of the sleeve. This is because the reflective sticker can provide a smooth reflective surface, reducing scattering and absorption of light, thereby improving the transmission efficiency of light.

[0105] Referring to FIG. 10, it is a schematic diagram of the overall structure of the heart rate test system provided by the embodiment of the application. As shown in FIG. 10, the heart rate test system comprises a test PC (control device 11), a signal reflection device 12, and a Bluetooth adapter (Bluetooth device 13). The signal reflection device comprises a driving device 52, a turntable 121, an earphone fixing jig 54, and a sleeve 55. The turntable 121 comprises two reflective regions with different colors. The heart rate test system can be used to test the heart rate detection function of the earphone to be tested.

[0106] The embodiment of the application provides a heart rate test method. The heart rate test method is applied to the heart rate test system. The embodiment of the application uses a photoplethysmography (PPG) method to measure the heart rate physiological index detection value of the earphone to be tested. The principle is as follows: when light passes through the skin, it passes through the skin tissue, including bones, muscles, veins, and arteries. Because blood can absorb more light than surrounding tissue, with the beating of the heart, the contraction and expansion of blood vessels will cause changes in the intensity of light passing through the tissue. After the light passes through the skin tissue, it is reflected to a photosensitive sensor (such as a photodiode PD). The change in light intensity detected by the photosensitive sensor is converted into an electrical signal. These electrical signals contain information about the blood volume changes caused by the beating of the heart. The obtained electrical signal can be divided into a direct current (DC) component and an alternating current (AC) component. The DC component reflects the static characteristics of the tissue, and the AC component is synchronized with the beating of the heart and reflects the characteristics of blood flow. By analyzing the AC component, the waveform of the pulse wave can be obtained, so as to understand the heart rate, blood flow, and blood oxygen saturation and other information.

[0107] Referring to FIG. 11, it is a flowchart of the test method provided by the embodiment of the application. As an example but not limitation, the method can comprise the following steps:

[0108] In S101, the control device sends a first signal to the signal reflection device, wherein the first signal comprises a rotation frequency.

[0109] In the embodiment of the application, when the performance of the earphone is detected, the signal reflection device is equivalent to simulate a real human body environment, and is used to absorb part of the infrared signal emitted by the earphone to be tested. The remaining signal is reflected back by the signal reflection device, so as to test the performance of the earphone to be tested.

[0110] The control device actively sends a signal (first signal) to the motor of the signal reflecting device. This signal is designed to contain certain information, one of which is the rotation frequency. The first signal is not just a simple signal, but a complex signal containing rotation frequency information. The rotation frequency may refer to the rotation speed of a mechanical system or some moving object. The specific implementation of the control device sending the first signal to the signal reflecting device will depend on the type of signal reflecting device, the required signal characteristics, the transmission medium, and the capabilities of the control device.

[0111] In some implementations, if the signal reflecting device is directly connected to the control device, such as through an RS-232 interface, the control device can send signals to the signal reflecting device through the RS-232 physical interface. Configure RS-232 communication parameters on the control device, including baud rate, data bits, stop bits, and parity bits, which need to match the configuration of the signal reflecting device. The control device generates the corresponding control signal (first signal) according to the operation to be controlled, and the control device sends the pre-defined control command to the signal reflecting device through the RS-232 interface.

[0112] In other implementations, if the signal reflecting device supports wireless communication, the control device can send signals through wireless protocols such as Wi-Fi, Bluetooth, LoRa, NFC, etc. The control device can be configured in the mode of a wireless access point to directly communicate with the wireless client of the signal reflecting device.

[0113] In the above method, through the specific control signal, precise communication with the signal reflecting device can be achieved, improving the reliability and stability of data transmission.

[0114] S102, after the signal reflecting device receives the first signal, the second signal sent by the earphone to be tested is reflected according to the rotation frequency, so that the earphone to be tested obtains the reflected third signal.

[0115] In the embodiments of the present application, the earphone to be tested contains two groups of identical red signals, infrared signals, and photodiodes. When measuring heart rate, the sensor infrared LED light signal (second signal) is emitted to the signal reflecting device. The signal is absorbed by light when passing through the signal reflecting device, and part of the second signal will be returned to the earphone to be tested.

[0116] The signal reflection device analyzes the first signal and extracts the required parameters, such as the rotation frequency and other information. These parameters are used to guide the signal reflection device on how to process the second signal sent by the earphone under test. The signal reflection device reflects the second signal according to the rotation frequency. Since the earphone under test contains two sets of identical red signals, infrared signals, and photodiodes, when the earphone under test measures the heart rate, the sensing infrared LED light signal (second signal) is emitted to the signal reflection device, and the signal reflection device processes the signal. Part of the second signal, i.e., the third signal, will be returned to the earphone under test. The signal processor in the earphone under test analyzes the third signal to determine the performance or state of the earphone, such as the intensity, frequency, and other information of the third signal that the earphone under test may detect, to evaluate the response characteristics of the earphone.

[0117] Specifically, part of the light signal of the second signal is reflected and received by the photodiode in the earphone under test and converted into an electrical signal. Since the electrical signal is an analog signal, the electrical signal is then converted from analog to digital (third signal), and finally the signal processor of the earphone under test processes the third signal.

[0118] In one embodiment, the signal reflection device includes a rotating disc, and the rotating disc includes a reflecting surface. The step S102 includes:

[0119] The signal reflection device rotates the rotating disc according to the rotation frequency, so that the reflecting surface on the rotating disc reflects the second signal sent by the earphone under test.

[0120] In the embodiments of the present application, the reflecting surface in the rotating disc is equivalent to simulating the human body environment to absorb or reflect infrared light. The signal reflection device rotates the rotating disc according to the set rotation frequency, so that the position of the reflecting surface relative to the earphone under test is changed, thereby affecting the characteristics of the reflected signal.

[0121] For example, when testing the heart rate function of the earphone, the reflecting surface of the rotating disc can be set according to the absorption rule of the heart to infrared light when the heart contracts or relaxes. For example, when the heart contracts, the density of hemoglobin is high, and more infrared light is reflected. When the heart relaxes, the density of hemoglobin is low, and more infrared light is absorbed. Therefore, the reflecting surface can be set as a left-right equal bicolour rotating disc, each part has different colors, such as gray representing a material with high reflectivity, black representing a material with low reflectivity, and a transition area with intermediate reflectivity. The rotating disc rotates according to the rotation frequency, and the output waveform is similar to a human electrocardiogram. When the rotating disc rotates according to the rotation frequency, the second signal sent by the earphone under test to the rotating disc is reflected according to the corresponding reflecting surface, which simulates the reflection function of the human body to infrared light. Finally, the earphone under test further analyzes the reflected signal.

[0122] In the above method, the rotation of the turntable can dynamically change the phase and amplitude of the reflected signal, and the actual human environment can be simulated to improve the accuracy of the performance detection of the earphone to be tested.

[0123] S103, the earphone to be tested performs signal processing on the third signal to obtain a fourth signal, and sends the fourth signal to the control device.

[0124] In the embodiment of the present application, the earphone to be tested receives the third signal reflected by the signal reflection device, which may have undergone a certain specific modulation or change. The earphone to be tested contains signal processing circuits and algorithms inside, which will process the received signal according to the design, including amplification, filtering, demodulation, sampling, quantization, etc., to ensure that the signal meets the working requirements of the earphone. The processed signal, i.e. the fourth signal, is generated by the earphone to be tested according to the third signal and its own signal processing logic, and the earphone to be tested sends the generated fourth signal to the control device, which is usually achieved through wireless or wired connection.

[0125] In one embodiment, referring to FIG. 12, it is a schematic diagram for obtaining the fourth signal provided by the embodiment of the present application, as shown in FIG. 12, step S103 includes:

[0126] S201, the earphone to be tested obtains the alternating current signal in the third signal.

[0127] In the embodiment of the present application, the reflected signal (third signal) obtained by the earphone to be tested contains alternating current signal and direct current signal. In the PPG method, the alternating current signal can reflect the analysis of the characteristics of blood flow, which can be compared to the process of monitoring heartbeats. In this analogy, the alternating current signal is like the diastole and systole of the heart, which brings the change amount of the signal, while the direct current signal can be regarded as the average level or baseline of the heartbeat. Therefore, the earphone to be tested needs to separate the third signal to separate the alternating current signal.

[0128] S202, the earphone to be tested analyzes the alternating current signal to obtain the time domain characteristics of the alternating current signal.

[0129] In the embodiment of the present application, the time domain characteristics of the signal can understand the characteristics of the signal from different angles, such as the amplitude, frequency, periodicity, instantaneous change, etc. of the signal, so as to be used for subsequent signal processing and analysis. In actual application, it may be necessary to select appropriate characteristics according to the characteristics of specific signals and analysis purposes. When obtaining the time domain characteristics of the signal, a variety of different algorithms can be used, such as the wavelet transform algorithm can be used to obtain the time domain characteristics of the alternating current signal. The time domain characteristics include the peak value characteristics, energy characteristics and signal period of the signal. The distribution information of the signal can be obtained according to the time domain characteristics.

[0130] In the above method, the earphone to be tested can perform detailed time-frequency analysis on the alternating current signal and obtain relatively accurate analysis data. The accuracy of performance testing of the earphone to be tested can be improved.

[0131] In S203, the earphone to be tested generates a detection value according to the time domain feature, and the fourth signal is the detection value.

[0132] In the embodiments of the present application, the earphone to be tested extracts key information according to the time domain feature. Using the above feature, the earphone to be tested can have an algorithm or model to generate a detection value, which is used for a comprehensive evaluation of the performance of the earphone.

[0133] In one embodiment, when testing the heart rate performance of the earphone to be tested, the detection value is a heart rate value, and S203 includes:

[0134] The earphone to be tested obtains the number of signal peaks within a preset time according to the time domain feature; and the earphone to be tested determines a heart rate value according to the number of signal peaks.

[0135] In the embodiments of the present application, the earphone to be tested identifies the wave peaks in the time domain feature. The wave peaks correspond to the peak values of the heart rate signal and represent the heart beat cycle. Various algorithms can be used to identify the wave peaks, such as threshold-based detection, waveform fitting or machine learning methods. The earphone to be tested determines the heart rate value according to the number of detected wave peaks. The heart rate value is usually directly related to the frequency of wave peaks, and can be obtained by calculating the number of wave peaks within a preset time interval.

[0136] In some implementations, when the earphone to be tested detects a wave peak, it can calculate the time interval between adjacent wave peaks, which reflects the heart beat cycle. Once a wave peak is detected, the time interval between adjacent wave peaks is calculated, and then, within one minute, 60 seconds are divided by the calculated time interval between two adjacent wave peaks to obtain the number of wave peaks appearing per minute, i.e. the heart rate value.

[0137] In other implementations, the number of wave peaks can be calculated according to the following formula: HR_per_minitues=FS×60 / n_peak_interval_sum, where FS is the frequency of wave peaks, and n_peak_interval_sum is the PPG signal sampling time.

[0138] Suppose that the time of continuous sampling is 5 seconds, and the number of wave peaks within 5s is N, then the heart rate value HR=(N×60) / 5=N×12.

[0139] In the above method, the number of wave peaks is determined by analyzing the time domain feature of the signal, which can improve the accuracy of heart rate detection and reduce errors caused by motion or other factors.

[0140] S104, after the control device receives the fourth signal, testing the performance of the earphone to be tested according to the fourth signal and the rotation frequency.

[0141] In the embodiment of the application, when testing the heart rate function of the earphone to be tested, the rotation frequency of the rotating disc corresponds to the set heart rate value of the human body, and the obtained heart rate value (the fourth signal) is compared with the pre-rotation frequency to evaluate the heart rate detection performance of the earphone to be tested.

[0142] In one embodiment, step S104 comprises:

[0143] The control device calculates the difference value between the heart rate value and the preset value corresponding to the rotation frequency, and determines that the performance of the earphone to be tested is qualified if the difference value is within the preset error.

[0144] In the embodiment of the application, the preset value corresponding to the rotation frequency corresponds to the set preset heart rate value (the rotation frequency of the rotating disc). The control device calculates the difference between the actually measured heart rate value (the fourth signal) and the preset number of revolutions per minute. The difference value can be expressed as an absolute error or a relative error.

[0145] The control device calculates the difference between the actually measured heart rate value and the preset heart rate value. The difference value can be expressed as an absolute error or a relative error. If the difference value is within the preset error range (±2bpm), it is determined that the performance of the earphone to be tested is qualified. This means that the performance of the earphone at the simulated heart rate frequency meets the design requirements. If the difference value exceeds the preset error range, it is determined that the performance of the earphone to be tested is unqualified. At this time, further analysis is needed to find out the reason and take corresponding measures, such as adjusting the design, repairing or retesting. The above-mentioned method has a simple test process and can improve the test efficiency of the earphone heart rate test.

[0146] The steps of testing the heart rate detection function of the earphone to be tested by the heart rate test system in FIG. 10 are as follows:

[0147] 1. Place the earphone to be tested at the earphone fixing jig 54, and the tester starts the earphone to be tested to send an infrared light signal through the test PC (the control device 11), and the infrared light signal is input into the reflecting surface 1211 in the motor rotating disc 121 through the sleeve 55;

[0148] 2. The test PC (the control device) sends an RS232 program control instruction to the driving device 52 (the motor) in the signal reflecting device. The program control instruction contains the rotation frequency for controlling the rotation of the motor; after receiving the program control instruction, the motor 52 rotates according to the rotation frequency in the instruction, and the driving device 52 drives the motor rotating disc 121 to rotate;

[0149] 3. When the motor rotating disc (heart rate rotating disc) 121 rotates, the infrared light signal will be emitted into the dichroic reflection area of the reflecting surface 1211 at the rotating frequency, the dichroic reflection area of the reflecting surface 1211 will absorb and reflect the infrared light signal to different degrees, and the reflected infrared signal will return through the sleeve 55 and be collected by the earphone to be tested;

[0150] 4. After the earphone to be tested collects the reflected signal, the signal is processed to obtain a heart rate detection value;

[0151] 5. The Bluetooth adapter (Bluetooth device 13) reads the heart rate detection value of the earphone to be tested through wireless SPP (Bluetooth technology);

[0152] 6. The Bluetooth adapter sends the heart rate detection value to the test PC end (control device) through the serial port protocol;

[0153] 7. The test PC end determines whether the earphone to be tested meets the technical specification requirements by comparing the heart rate detection value with the preset standard value (rotating frequency), and displays the test result PASS or NG, wherein the rotating frequency of the driving device 52 is equivalent to the set actual heart rate value of the human body.

[0154] Through the above-mentioned heart rate test system, the actual human body environment can be simulated to test the earphone heart rate detection function, the test precision of the earphone heart rate test can be improved, the test process is simple, and the test efficiency of the earphone heart rate test is improved.

[0155] It should be understood that the size of the serial number of each step in the above-mentioned embodiment does not mean the order of execution, and the execution order of each process should be determined according to its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the application.

[0156] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is exemplified, and in actual application, the above-mentioned functions can be completed by different functional units and modules according to needs, that is, the internal structure of the system is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be realized in the form of hardware or software. In addition, the specific names of each functional unit and module are only for easy distinction, and do not limit the protection scope of the application. The specific working process of the unit and module in the above-mentioned system can refer to the corresponding process in the foregoing method embodiment, which will not be described here.

[0157] FIG. 13 is a structural schematic diagram of a terminal device according to an embodiment of the present application. As shown in FIG. 13, the terminal device 14 according to the embodiment includes at least one processor 140 (only one processor is shown in FIG. 13), a memory 141, and a computer program 142 stored in the memory 141 and executable on the at least one processor 140, and the processor 140 implements the steps in any of the above-mentioned heart rate test method embodiments when executing the computer program 142.

[0158] The terminal device can be a desktop computer, a notebook computer, a palm computer, a cloud server, and the like. The terminal device can include, but is not limited to, a processor and a memory. Those skilled in the art can understand that FIG. 13 is only an example of the terminal device 14, and does not limit the terminal device 14, which can include more or fewer components than shown, or combine certain components, or different components, for example, can also include an input / output device, a network access device, and the like.

[0159] The processor 140 can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic components, discrete hardware components, or the like. The general-purpose processor can be a microprocessor or can also be any conventional processor.

[0160] The memory 141 can be an internal storage unit of the terminal device 14 in some embodiments, for example, a hard disk or a memory of the terminal device 14. The memory 141 can also be an external storage device of the terminal device 14 in other embodiments, for example, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, or the like. Further, the memory 141 can include both an internal storage unit and an external storage device of the terminal device 14. The memory 141 is used to store an operating system, an application program, a boot loader, data, and other programs, for example, program codes of the computer program, and the like. The memory 141 can also be used to temporarily store data that has been output or will be output.

[0161] The embodiment of the present application further provides a computer readable storage medium, which stores a computer program. The computer program is executed by a processor to implement the steps in each of the above method embodiments.

[0162] The embodiment of the present application provides a computer program product. When the computer program product is run on a terminal device, the terminal device is caused to implement the steps in each of the above method embodiments.

[0163] The integrated unit, if realized in the form of a software functional unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the embodiment of the present application can implement all or part of the above method processes by a computer program to instruct related hardware to complete. The computer program can be stored in a computer readable storage medium. The computer program, when executed by a processor, can implement the steps in each of the above method embodiments. The computer program includes computer program code. The computer program code can be in the form of source code, object code, executable files or some intermediate forms. The computer readable medium at least includes any entity or system capable of carrying the computer program code to the system / terminal device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunications signal and a software distribution medium. For example, a U disk, a mobile hard disk, a magnetic disk or an optical disk, etc. In some jurisdictions, according to legislation and patent practice, the computer readable medium cannot be an electrical carrier signal and a telecommunications signal.

[0164] In the above embodiments, the description of each embodiment has its own focus. The parts not described or recorded in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0165] Those skilled in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. The skilled person can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0166] In the embodiments provided by the present application, it should be understood that the disclosed system / terminal device and method can be implemented in other manners. For example, the embodiments of the system / terminal device described above are merely schematic, and the division of the modules or units is merely logical function division, and there can be another division manner in actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between the units can be indirect couplings or communication connections through some interfaces, and there can be electric, mechanical or other forms.

[0167] The units described as separated components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purposes of the embodiments of the present application.

[0168] The above embodiments are merely used to describe the technical solutions of the present application, but not to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalent replacements; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A heart rate test method, characterized in that, The application is applied to a heart rate test system, which comprises a control device and a signal reflection device; the method comprises: The control device sends a first signal to the signal reflection device, wherein the first signal comprises a rotation frequency; After receiving the first signal, the signal reflection device reflects a second signal sent by a to-be-tested earphone according to the rotation frequency, so that the to-be-tested earphone acquires a third signal after reflection; The to-be-tested earphone performs signal processing on the third signal to obtain a fourth signal and sends the fourth signal to the control device; After receiving the fourth signal, the control device tests the performance of the to-be-tested earphone according to the fourth signal and the rotation frequency.

2. The heart rate test method of claim 1, wherein, The signal reflection device comprises a rotating disc, and the rotating disc comprises a reflection surface; The step of reflecting, by the signal reflection device, the second signal sent by the to-be-tested earphone according to the rotation frequency comprises: The signal reflection device rotates the rotating disc according to the rotation frequency, so that the reflection surface on the rotating disc reflects the second signal sent by the to-be-tested earphone.

3. The heart rate test method of claim 1, wherein, The step of performing signal processing on the third signal by the to-be-tested earphone to obtain a fourth signal comprises: The to-be-tested earphone acquires an alternating current signal in the third signal; The to-be-tested earphone performs time domain analysis on the alternating current signal to obtain a time domain feature of the alternating current signal; The to-be-tested earphone generates a detection value according to the time domain feature, and the fourth signal is the detection value.

4. The heart rate test method of claim 3, wherein, When testing the heart rate performance of the to-be-tested earphone, the detection value is a heart rate value; The step of generating a detection value according to the time domain feature by the to-be-tested earphone comprises: The to-be-tested earphone acquires the number of signal wave crests within a preset time according to the time domain feature; The to-be-tested earphone determines the heart rate value according to the number of signal wave crests.

5. The heart rate test method of claim 4, wherein, The step of testing the performance of the to-be-tested earphone according to the fourth signal and the rotation frequency by the control device comprises: The control device calculates a difference value between the heart rate value and a preset value corresponding to the rotation frequency; If the difference value is within a preset error, it is determined that the performance of the to-be-tested earphone is qualified.

6. A heart rate test system, characterized in that The heart rate test system comprises: A control device and a signal reflection device, and the heart rate test system is used to implement the heart rate test method according to any one of the above 1-5.

7. The heart rate test system of claim 6, wherein, The heart rate test system further comprises a Bluetooth device; the Bluetooth device is connected with the signal reflection device and the control device respectively; the control device communicates with the signal reflection device through the Bluetooth device.

8. The heart rate test system of claim 6, wherein, The signal reflection device comprises a rotating disc, and the rotating disc comprises a reflection surface used for reflecting a signal sent by the to-be-tested earphone.

9. The heart rate test system of claim 6, wherein, The reflection surface comprises two reflection areas, and the reflectivities of different reflection areas are different.

10. The heart rate test system of claim 9, wherein, The areas of different reflection areas are the same, and the materials of different reflection areas are different.

11. The heart rate test system of claim 10, wherein, Each reflection area comprises a transition area, the areas of different transition areas are the same, and the materials of different transition areas are the same; the transition area is used for smoothing a reflected signal.

12. The heart rate test system of claim 8, wherein, The signal reflection device further comprises a driving device, and the driving device is connected with the control device and the rotating disc respectively; the control device drives the signal reflection device through the driving device.

13. The heart rate test system of claim 12, wherein, The signal reflection device further comprises an earphone fixture fixed above the turntable for fixing the earphone to be tested and for transmitting signals.

14. The heart rate test system of claim 13, wherein, The earphone fixture further comprises an earphone fixing fixture for fixing the earphone to be tested.

15. The heart rate test system of claim 14, wherein, The earphone fixture further comprises a sleeve connected with the earphone fixing fixture, and the sleeve is used for transmitting signals.

16. The heart rate test system of claim 15, wherein, The sleeve further comprises a reflective sticker arranged on the inner wall of the sleeve, and the reflective sticker is used for amplifying reflected signals.

17. A terminal device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor executes the computer program to implement the method of any one of claims 1 to 5.

18. A computer-readable storage medium, the computer-readable storage medium storing a computer program, characterized in that, The computer program is executed by the processor to implement the method of any one of claims 1 to 5.

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