Intelligent necklace

Abstract

The invention discloses an intelligent necklace, and relates to the technical field of intelligent wearable device.The intelligent necklace comprises a necklace body and a pendant, the necklace body defines a wearing hole, and the necklace body can be worn outside a wearer through the wearing hole; the pendant comprises a pendant body, a heart sound sensor and a main control chip, the pendant body is connected to the chain body, a decorative face and a binding face are formed on the two opposite sides of the pendant body respectively, a containing cavity is formed in the pendant body, the heart sound sensor and the main control chip are both contained in the containing cavity, and the detection end of the heart sound sensor faces the binding face. According to the necklace, the heart sound sensor is arranged in the pendant of the necklace, so that the position aligned to the heart sound sensor does not need to be manually adjusted during heart sound detection, the accuracy of heart sound signal detection is improved, meanwhile, the heart sound sensor is perpendicular to the body surface of a wearer, all detected heart sound signals can be fully utilized, and the detection efficiency is improved. Therefore, the detection effect of the heart sound sensor and the accuracy of the detection result are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of smart wearable devices, and in particular to a smart necklace. Background Art

[0002] With the rapid development of information technology, more and more smart wearable devices are being applied to various fields of life. At present, smart wearable devices have become a hot spot in the market, and their types are increasing day by day, such as smart watches, smart glasses, smart bracelets and other wearable devices. As the material living standards continue to improve, people are beginning to pay more and more attention to their health status, especially through a variety of instruments and equipment to collect and analyze their own health data, resulting in the large-scale promotion of measuring instruments and equipment. Smart wearable devices with health monitoring functions such as smart bracelets and smart watches are also favored by users because of their portability and diverse appearance.

[0003] Heart sounds refer to the sounds made by heart beating. By monitoring heart sound data, the health status of the heart can be obtained, and a variety of heart information can be obtained from the heart sound data. Smart bracelets and smart watches in the prior art usually detect heart sound data by placing the arm on the chest so that the heart sound sensor corresponds to the chest setting. However, in actual operation, different users have different understandings of the placement of smart bracelets and smart watches, and usually cannot align them, let alone make the heart sound sensor perpendicular to the chest. In addition, the thickness of chest fat is different for different people. It is understandable that fat has a weakening effect on sound. Therefore, people with thicker chest fat, especially women, have poor heart sound detection when using smart bracelets or smart watches, and the detection results are inaccurate. Summary of the invention

[0004] The main purpose of the present invention is to propose a smart necklace, which aims to solve the problems in the prior art that when performing heart sound detection through smart bracelets or smart watches, the heart sound sensor cannot be aligned or vertical, and fat affects the heart sound sensor, resulting in poor heart sound detection effect and inaccurate detection results.

[0005] To achieve the above-mentioned purpose, the smart necklace proposed by the present invention comprises:

[0006] A chain body, the chain body enclosing a wearing hole, and the chain body can be worn outside the wearer's body through the wearing hole;

[0007] A pendant, comprising a pendant body, a heart sound sensor and a main control chip, wherein the pendant body is connected to the chain body, and opposite sides of the pendant body respectively form a decorative surface and a fitting surface, wherein a receiving cavity is formed in the pendant body, wherein the heart sound sensor and the main control chip are both accommodated in the receiving cavity, and the detection end of the heart sound sensor faces the fitting surface, and the fitting surface is used to fit with the body surface of the wearer when the chain body is worn outside the wearer's body through the wearing hole, so as to detect the heart sound signal of the wearer through the heart sound sensor and send the detected heart sound signal to the main control chip, and the main control chip is used to analyze the heart sound signal to obtain heart sound data.

[0008] In one embodiment, a filter is also provided in the accommodating cavity, and the heart sound sensor is used to send the heart sound signal to the filter, and the filter is used to filter out the heart sound signal outside a preset frequency range to filter the heart sound signal, and send the filtered heart sound signal to the main control chip.

[0009] In one embodiment, a plurality of the heart sound sensors are arranged at intervals in the accommodating cavity, and the plurality of the heart sound sensors are respectively used to detect the heart sound signals of the wearer and send the detected plurality of the heart sound signals to the filter, and the filter respectively filters the plurality of the heart sound signals and sends the filtered plurality of the heart sound signals to the main control chip, and the main control chip is used to analyze the plurality of the heart sound signals to obtain the heart sound data.

[0010] In one embodiment, a distance sensor is further provided at a position corresponding to each of the heart sound sensors in the accommodating cavity, and the detection end of each of the distance sensors faces the fitting surface; the plurality of distance sensors are respectively used to detect the thickness data of the wearer's subcutaneous fat at the corresponding heart sound sensor, and the detected plurality of thickness data are respectively sent to the main control chip, and the main control chip is used to analyze the plurality of thickness data and the plurality of heart sound signals to obtain the heart sound data.

[0011] In one embodiment, the decorative surface can fit the body surface of the wearer when the chain body is worn outside the wearer through the wearing hole;

[0012] A driving component electrically connected to the main control chip is also provided in the accommodating cavity. The surface of the fitting surface and the decorative surface in contact with the wearer's body surface is defined as a working surface. The main control chip is used to control the driving component to drive the heart sound sensor to rotate relative to the pendant so that the detection end of the heart sound sensor faces the working surface.

[0013] In one embodiment, an angle sensor is provided in the accommodating cavity, and the angle sensor is used to detect the rotation angle data of the pendant and send the rotation angle data to the main control chip. The main control chip is used to determine whether the working surface is the fitting surface or the decorative surface according to the rotation angle data.

[0014] In one embodiment, a first temperature sensor and a second temperature sensor are disposed in the accommodating cavity, the first temperature sensor is disposed close to the bonding surface, and the second temperature sensor is disposed close to the decorative surface;

[0015] The first temperature sensor is used to detect the first temperature data of the bonding surface and send it to the main control chip, the second temperature sensor is used to detect the second temperature data of the decorative surface and send it to the main control chip, the main control chip is used to analyze the first temperature data and the second temperature data, and determine whether the working surface is the bonding surface or the decorative surface according to the analysis result.

[0016] In one embodiment, a communication module is disposed in the accommodating cavity, the communication module is electrically connected to the main control chip, and is used to send the heart sound data to an external device.

[0017] In one embodiment, the pendant includes an outer shell and a cover plate, the outer shell is connected to the chain body, one side of the outer shell is open, the cover plate is covered at the open position and encloses the accommodating cavity with the outer shell, and the side of the cover plate facing away from the outer shell forms the fitting surface, and the side of the outer shell facing away from the cover plate forms the decorative surface.

[0018] In one embodiment, a battery is detachably installed in the accommodating cavity, and the battery is used to supply power to the heart sound sensor and the main control chip.

[0019] In one embodiment, a through hole is opened on the cover plate, and the detection end of the heart sound sensor is exposed outside the accommodating cavity through the through hole. The detection end is flush with the fitting surface, and a sealing member is provided at the through hole, which blocks the through hole and shields the detection end.

[0020] In one embodiment, a plurality of friction lines arranged at intervals are formed on the fitting surface, and an arc-shaped contact portion for contacting the body surface of the wearer is formed on a side of each friction line facing away from the fitting surface.

[0021] The technical solution of the present invention is to set a heart sound sensor on the pendant of the smart necklace, and provide support for the smart necklace through the wearing hole formed by the chain body. The pendant is automatically hung at the position corresponding to the middle of the chest under the action of gravity, so that the heart sound sensor faces the middle of the chest with less fat, rather than the chest at the heart with glands and fat, thereby reducing the influence of fat on the heart sound signal. At the same time, due to the movement of the pendant under the action of gravity, the position of the pendant does not need to be manually aligned by the wearer, and the position of the pendant is almost the same for different wearers, thereby improving the accuracy of heart sound signal detection; at the same time, the detection end of the heart sound sensor faces the fitting surface, and when the fitting surface is in contact with the chest, the heart sound sensor is perpendicular to the body surface of the wearer, so that the heart sound sensor will not have any component due to inclination when detecting, and all detected heart sound signals can be fully utilized, thereby improving the detection effect of the heart sound sensor.

[0022] The present invention arranges the heart sound sensor in the pendant of the necklace, so that there is no need to manually adjust the position of the heart sound sensor during heart sound detection. The heart sound detection area can be ensured to be roughly the same for different users, thereby improving the accuracy of heart sound signal detection. At the same time, the heart sound sensor is perpendicular to the wearer's body surface, and all detected heart sound signals can be fully utilized, thereby improving the detection effect of the heart sound sensor and the accuracy of the detection result. Moreover, compared with smart bracelets and smart watches, smart necklaces can be close to the wearer's body surface at all times to detect heart sound data in real time, thereby improving the comprehensiveness and timeliness of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the structure of the smart necklace provided by the present invention;

[0025] Figure 2 A schematic diagram of the disassembled structure of the pendant of the smart necklace provided by the present invention.

[0026] Description of Figure Numbers:

[0027] 100. Smart necklace; 1. Chain body; 11. Wearing hole; 2. Pendant; 20. Accommodation cavity; 21. Pendant body; 211. Shell; 212. Cover plate; 213. Decorative surface; 214. Fitting surface; 22. Heart sound sensor; 23. Main control chip; 24. Filter; 25. Distance sensor; 26. Driver.

[0028] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] Smart bracelets and smart watches in the prior art usually detect heart sound data by placing the arm on the chest so that the heart sound sensor is set corresponding to the chest. However, in actual operation, different users have different understandings of the placement of smart bracelets and smart watches, and they are usually unable to align them, let alone make the heart sound sensor perpendicular to the chest. In addition, the thickness of chest fat is different for different people. It is understandable that fat has a weakening effect on sound. Therefore, people with thicker chest fat, especially women, have poor heart sound detection results when using smart bracelets or smart watches, and the detection results are inaccurate.

[0033] In order to solve the above problems, the present invention proposes a smart necklace 100.

[0034] Please combine Figure 1 and Figure 2The smart necklace 100 of this embodiment includes a chain body 1 and a pendant 2. The chain body 1 forms a wearing hole 11, and the chain body 1 can be worn outside the wearer's body through the wearing hole 11; the pendant 2 includes a pendant 21, a heart sound sensor 22 and a main control chip 23. The pendant 21 is connected to the chain body 1, and the opposite sides of the pendant 21 respectively form a decorative surface 213 and a fitting surface 214. A accommodating cavity 20 is formed in the pendant 21, and the heart sound sensor 22 and the main control chip 23 are both accommodated in the accommodating cavity 20. The detection end of the heart sound sensor 22 faces the fitting surface 214. The fitting surface 214 is used to fit with the wearer's body surface when the chain body 1 is worn outside the wearer's body through the wearing hole 11, so as to detect the wearer's heart sound signal through the heart sound sensor 22 and send the detected heart sound signal to the main control chip 23. The main control chip 23 is used to analyze the heart sound signal to obtain heart sound data.

[0035] The technical solution of the present invention is to set a heart sound sensor 22 on the pendant 2 of the smart necklace 100, and provide support for the smart necklace 100 through the wearing hole 11 formed by the chain body 1. The pendant 21 is automatically hung at the position corresponding to the middle of the chest under the action of gravity, so that the heart sound sensor 22 faces the middle of the chest with less fat, rather than the chest at the heart with glands and fat, thereby reducing the influence of fat on the heart sound signal. At the same time, due to the movement of the pendant 2 under the action of gravity, the position of the pendant 2 does not need to be manually aligned by the wearer, and the position of the pendant 2 is almost the same for different wearers, thereby improving the accuracy of heart sound signal detection; at the same time, the detection end of the heart sound sensor 22 faces the fitting surface 214, and when the fitting surface 214 is fitted with the chest, the heart sound sensor 22 is perpendicular to the body surface of the wearer, so that the heart sound sensor 22 will not have any component due to inclination when performing detection, and all detected heart sound signals can be fully utilized, thereby improving the detection effect of the heart sound sensor 22.

[0036] The present invention sets the heart sound sensor 22 in the pendant 2 of the necklace, thereby eliminating the need to manually adjust the position of the heart sound sensor 22 during heart sound detection, and can ensure that the heart sound detection area is roughly the same for different users, thereby improving the accuracy of heart sound signal detection. At the same time, the heart sound sensor 22 is perpendicular to the wearer's body surface, and all detected heart sound signals can be fully utilized, thereby improving the detection effect of the heart sound sensor 22 and the accuracy of the detection results. Moreover, compared with smart bracelets and smart watches, the smart necklace 100 can always be close to the wearer's body surface to detect heart sound data in real time, thereby improving the comprehensiveness and timeliness of detection.

[0037] In one embodiment, a filter 24 is also provided in the accommodating cavity 20, and the heart sound sensor 22 is used to send the heart sound signal to the filter 24, and the filter 24 is used to filter out the heart sound signal outside the preset frequency range to filter the heart sound signal, and send the filtered heart sound signal to the main control chip 23.

[0038] It can be understood that the frequency range of heart sounds is usually 20 to 150 Hz. Therefore, in order to prevent the heart sound signal from being interfered with by environmental noise, body movement and other factors, a filter 24 is set to filter out signals outside 20 to 150 Hz, remove unnecessary high-frequency or low-frequency noise, retain the key frequency band of the heart sound signal, improve the clarity of the heart sound signal, and thus improve the detection accuracy of the heart sound signal.

[0039] In one embodiment, a plurality of heart sound sensors 22 are arranged at intervals in the accommodating cavity 20. The plurality of heart sound sensors 22 are respectively used to detect the heart sound signals of the wearer and send the detected plurality of heart sound signals to the filter 24. The filter 24 filters the plurality of heart sound signals respectively and sends the filtered plurality of heart sound signals to the main control chip 23. The main control chip 23 is used to analyze the plurality of heart sound signals to obtain heart sound data.

[0040] During daily activities, the pendant 2 will inevitably shift and cannot be guaranteed to always be in the middle of the chest. Therefore, multiple heart sound sensors 22 can detect heart sound signals in different parts of the body, covering a larger area, ensuring that clearer and more accurate heart sound signals are captured, and the accuracy of the heart sound signals can still be guaranteed when shifts occur. At the same time, multiple heart sound sensors 22 can detect signals at the same time and fuse or average them through algorithms, thereby reducing signal loss or distortion caused by poor contact or position deviation of a single heart sound sensor 22, further improving the accuracy of the heart sound signal, and thereby improving the accuracy of the heart sound data.

[0041] Furthermore, a distance sensor 25 is provided at a position corresponding to each heart sound sensor 22 in the accommodating cavity 20, and the detection end of each distance sensor 25 faces the fitting surface 214; the multiple distance sensors 25 are respectively used to detect the thickness data of the wearer's subcutaneous fat at the corresponding heart sound sensor 22, and send the detected multiple thickness data to the main control chip 23, which is used to analyze the multiple thickness data and multiple heart sound signals to obtain heart sound data. The thickness of the subcutaneous fat will affect the propagation of the heart sound signal. By detecting the fat thickness at each position, the system can correct the heart sound signal and compensate for the attenuation and distortion of the signal by the fat layer, thereby improving the signal accuracy.

[0042] In one embodiment, the decorative surface 213 can fit with the wearer's body surface when the chain body 1 is worn outside the wearer's body through the wearing hole 11; a driving component 26 electrically connected to the main control chip 23 is also provided in the accommodating cavity 20, and the surface in contact with the wearer's body surface among the fitting surface 214 and the decorative surface 213 is defined as a working surface, and the main control chip 23 is used to control the driving component 26 to drive the heart sound sensor 22 to rotate relative to the pendant 2 so that the detection end of the heart sound sensor 22 faces the working surface.

[0043] It is understandable that during daily activities, the pendant 2 may rotate, causing the decorative surface 213 to fit against the wearer's body surface. At this time, since the detection end of the heart sound sensor 22 is facing the fitting surface 214, after rotation, the detection end is away from the body surface, resulting in the detection end being unable to detect the heart sound signal, or causing the heart sound signal detection effect to be weakened. Therefore, the main control chip 23 determines whether the working surface is the fitting surface 214 or the decorative surface 213, and then the driving component 26 drives the heart sound sensor 22 to rotate relative to the pendant 2, so that the detection end of the heart sound sensor 22 faces the working surface, so that even if the pendant 2 is flipped during the activity, the detection end of the heart sound sensor 22 can always be aligned with the wearer's body surface and perpendicular to the wearer's body surface, thereby ensuring the stability and accuracy of heart sound detection.

[0044] In a specific embodiment, an angle sensor is provided in the accommodating cavity 20, and the angle sensor is used to detect the rotation angle data of the pendant 21 and send the rotation angle data to the main control chip 23, and the main control chip 23 is used to determine whether the working surface is the fitting surface 214 or the decorative surface 213 according to the rotation angle data. The angle sensor can detect the flip angle of the pendant 2 in real time to ensure that the device can accurately identify the current working surface, so that the main control chip 23 can drive the heart sound sensor 22 to rotate through the driving member 26, so that it always keeps the detection end facing the skin.

[0045] In another specific embodiment, a first temperature sensor and a second temperature sensor are arranged in the accommodating cavity 20, the first temperature sensor is arranged close to the bonding surface 214, and the second temperature sensor is arranged close to the decorative surface 213; the first temperature sensor is used to detect the first temperature data of the bonding surface 214 and send it to the main control chip 23, the second temperature sensor is used to detect the second temperature data of the decorative surface 213 and send it to the main control chip 23, the main control chip 23 is used to analyze the first temperature data and the second temperature data, and determine whether the working surface is the bonding surface 214 or the decorative surface 213 according to the analysis result.

[0046] It can be understood that under normal circumstances, the human body surface temperature is higher than the room temperature. Therefore, by comparing the readings of the temperature sensors on both sides of the pendant 2, the system can quickly determine which side is in contact with the skin, so that the main control chip 23 can drive the heart sound sensor 22 to rotate through the driving member 26, so that it always keeps the detection end facing the skin, and directly determines the working surface through the temperature difference, reducing the complex angle detection structure design, which not only simplifies the equipment structure, but also reduces maintenance costs.

[0047] In one embodiment, a communication module is provided in the accommodating cavity 20, and the communication module is electrically connected to the main control chip 23 and is used to send the heart sound data to an external device. The heart sound data is sent to an external device through the communication module, which can be a smart phone or a smart terminal, so that the heart sound data can be clearly displayed and used for subsequent research, or it can be a smart watch, which comprehensively judges the heart sound data with health data such as heart rate and blood pressure, thereby improving the accuracy of health monitoring.

[0048] In one embodiment, the pendant 21 includes a shell 211 and a cover plate 212, the shell 211 is connected to the chain body 1, one side of the shell 211 is open, the cover plate 212 is covered at the open position and encloses the housing cavity 20 with the shell 211, and the side of the cover plate 212 away from the shell 211 forms a fitting surface 214, and the side of the shell 211 away from the cover plate 212 forms a decorative surface 213. The shell 211 and the cover plate 212 are detachably arranged, so that the structure in the housing cavity 20 is easier to replace and maintain, improving the disassembly and assembly efficiency and reducing the maintenance cost.

[0049] In one embodiment, a battery is detachably installed in the accommodating cavity 20, and the battery is used to supply power to the heart sound sensor 22 and the main control chip 23. The battery is detachable, so that the battery can be replaced at any time, and multiple batteries can be prepared for use in turn to avoid the device being disabled due to battery exhaustion, thereby extending the continuous use time of the device; when the battery performance deteriorates or fails, a new battery can be directly replaced without replacing the entire pendant 2 or performing complicated repairs, thereby improving the convenience and economy of device maintenance.

[0050] In one embodiment, a through hole is provided on the cover plate 212, and the detection end of the heart sound sensor 22 is exposed outside the accommodating cavity 20 through the through hole, and the detection end is flush with the fitting surface 214, and a seal is provided at the through hole, which blocks the through hole and shields the detection end. It should be noted that when the detection end passes through the through hole, it cannot rotate, so the attached Figure 2 It is only a drawing of the aforementioned rotatable solution, and the through-hole diagram is not shown. The detection end is flush with the fitting surface 214 through the through-hole, so that the detection end is closer to the user's body surface, thereby further improving the accuracy of the detection end in detecting the heart sound signal and avoiding the weakening of the heart sound signal by the pendant body 21 of the pendant 2.

[0051] In one embodiment, a plurality of friction lines (not shown) are formed on the fitting surface 214 at intervals, and an arc-shaped contact portion for contacting the wearer's body surface is formed on the side of each friction line away from the fitting surface 214. The friction lines and the arc-shaped contact portion can increase the contact area and friction between the device and the skin, effectively prevent the pendant 2 or the device from sliding or shifting during wearing, maintain the stable fit between the sensor and the skin, and improve the accuracy of detection; at the same time, the design of the arc-shaped contact portion is ergonomic, can better adapt to the skin curve, reduce local pressure, avoid discomfort caused by long-term wearing of the wearer, and increase the comfort of use.

[0052] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A smart necklace, characterized in that: include: A chain body, the chain body enclosing a wearing hole, and the chain body can be worn outside the wearer's body through the wearing hole; A pendant, comprising a pendant body, a heart sound sensor and a main control chip, wherein the pendant body is connected to the chain body, and opposite sides of the pendant body respectively form a decorative surface and a fitting surface, wherein a receiving cavity is formed in the pendant body, wherein the heart sound sensor and the main control chip are both accommodated in the receiving cavity, and the detection end of the heart sound sensor faces the fitting surface, and the fitting surface is used to fit with the body surface of the wearer when the chain body is worn outside the wearer's body through the wearing hole, so as to detect the heart sound signal of the wearer through the heart sound sensor and send the detected heart sound signal to the main control chip, and the main control chip is used to analyze the heart sound signal to obtain heart sound data.

2. The smart necklace as claimed in claim 1, characterized in that: A filter is also provided in the accommodating cavity. The heart sound sensor is used to send the heart sound signal to the filter. The filter is used to filter out the heart sound signal outside a preset frequency range to filter the heart sound signal, and send the filtered heart sound signal to the main control chip.

3. The smart necklace as claimed in claim 2, characterized in that: A plurality of heart sound sensors are arranged at intervals in the accommodating cavity, and the plurality of heart sound sensors are respectively used to detect the heart sound signals of the wearer and send the detected plurality of heart sound signals to the filter. The filter filters the plurality of heart sound signals respectively and sends the filtered plurality of heart sound signals to the main control chip. The main control chip is used to analyze the plurality of heart sound signals to obtain the heart sound data.

4. The smart necklace as claimed in claim 3, characterized in that: A distance sensor is also provided in the accommodating cavity at a position corresponding to each of the heart sound sensors, and the detection end of each of the distance sensors faces the fitting surface; the multiple distance sensors are respectively used to detect the thickness data of the wearer's subcutaneous fat at the corresponding heart sound sensor, and the detected multiple thickness data are respectively sent to the main control chip, and the main control chip is used to analyze the multiple thickness data and the multiple heart sound signals to obtain the heart sound data.

5. The smart necklace as claimed in claim 1, characterized in that: The decorative surface can fit the body surface of the wearer when the chain body is worn outside the wearer through the wearing hole; A driving component electrically connected to the main control chip is also provided in the accommodating cavity. The surface of the fitting surface and the decorative surface in contact with the wearer's body surface is defined as a working surface. The main control chip is used to control the driving component to drive the heart sound sensor to rotate relative to the pendant so that the detection end of the heart sound sensor faces the working surface.

6. The smart necklace as claimed in claim 5, characterized in that: An angle sensor is arranged in the accommodating cavity, and the angle sensor is used to detect the rotation angle data of the pendant and send the rotation angle data to the main control chip, and the main control chip is used to determine whether the working surface is the fitting surface or the decorative surface according to the rotation angle data.

7. The smart necklace as claimed in claim 5, characterized in that: A first temperature sensor and a second temperature sensor are arranged in the accommodating cavity, the first temperature sensor is arranged close to the bonding surface, and the second temperature sensor is arranged close to the decorative surface; The first temperature sensor is used to detect the first temperature data of the bonding surface and send it to the main control chip, the second temperature sensor is used to detect the second temperature data of the decorative surface and send it to the main control chip, the main control chip is used to analyze the first temperature data and the second temperature data, and determine whether the working surface is the bonding surface or the decorative surface according to the analysis result.

8. The smart necklace according to any one of claims 1 to 7, characterized in that: A communication module is arranged in the accommodating cavity, the communication module is electrically connected to the main control chip, and is used to send the heart sound data to an external device.

9. The smart necklace according to any one of claims 1 to 7, characterized in that: The pendant includes an outer shell and a cover plate, the outer shell is connected to the chain body, one side of the outer shell is open, the cover plate is covered at the open position and encloses the accommodating cavity with the outer shell, and the side of the cover plate facing away from the outer shell forms the fitting surface, and the side of the outer shell facing away from the cover plate forms the decorative surface.

10. The smart necklace as claimed in claim 9, characterized in that: A battery is detachably installed in the accommodating cavity, and the battery is used to supply power to the heart sound sensor and the main control chip.

11. The smart necklace according to claim 9, characterized in that: The cover plate is provided with a through hole, through which the detection end of the heart sound sensor is exposed outside the accommodating cavity, the detection end is flush with the fitting surface, and a sealing member is provided at the through hole, which blocks the through hole and shields the detection end.

12. The smart necklace according to any one of claims 1 to 7, characterized in that: The fitting surface is formed with a plurality of friction lines arranged at intervals, and a side of each friction line facing away from the fitting surface is formed with an arc-shaped contact portion for contacting the body surface of the wearer.

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