A heart rate armband with wearing detection

Abstract

The utility model discloses a heart rate armband with wearing detection, and relates to the technical field of heart rate armbands. It includes a detection host, on which an armband body is arranged; the detection host includes a bottom shell, a PCBA is arranged inside the bottom shell, and the PCBA is electrically connected with a mechanical sensor embedded in the bottom of the bottom shell and an optical sensor PPG, a surface shell is arranged on the top of the bottom shell, a battery electrically connected to the PCBA is arranged inside the bottom shell, the bottom of the PCBA is connected with a conductive copper column through a spring, the bottom end of the conductive copper column extends to the bottom of the bottom shell, and a magnet located on one side of the conductive copper column is arranged inside the bottom shell. By adding a mechanical sensor, the pulling force of the armband body on the detection host, that is, the tightness of wearing, can be read in real time when wearing. The detection host sends the wearing status to the mobile phone APP end by wireless means, and displays it to the user, so as to guide the user to adjust the tightness of wearing the armband body, thereby ensuring the detection accuracy of the optical sensor PPG.

Description

Technical Field

[0001] The utility model relates to the technical field of heart rate armbands, in particular to a heart rate armband with wearing detection function. Background Art

[0002] The usage scenarios of heart rate armbands: professional athletes or sports enthusiasts, in order to be able to grasp their heart rate data in real time, in order to be able to obtain the most accurate sports data, so as to be able to conduct targeted training more scientifically, such as maintaining aerobic fat-reducing training, in order to have better results, they need to exercise in an accurate heart rate range, so they need to wear a heart rate armband during training.

[0003] In the prior art, when using a heart rate armband, the first step is to wear it properly, but the tightness of the band when worn can only be judged by the user himself, which often results in the band being worn too loosely or too tightly, resulting in a large amount of abnormal data in the subsequent training process. Utility Model Content

[0004] The utility model provides a heart rate armband with wearing detection function to solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heart rate armband with wearing detection, comprising a detection host, on which an armband body is arranged;

[0006] The detection host comprises a bottom shell, a PCBA is arranged inside the bottom shell, and a mechanical sensor and an optical sensor PPG embedded in the bottom of the bottom shell are electrically connected to the PCBA.

[0007] Furthermore, a surface shell is arranged on the top of the bottom shell.

[0008] Furthermore, a battery electrically connected to the PCBA is disposed inside the bottom shell.

[0009] Furthermore, the bottom of the PCBA is connected to a conductive copper column via a spring, and the bottom end of the conductive copper column extends to the bottom of the bottom shell.

[0010] Furthermore, a magnet is disposed inside the bottom shell and is located on one side of the conductive copper column.

[0011] Furthermore, a lens located at the bottom of the optical sensor PPG is provided at the bottom of the bottom shell.

[0012] Furthermore, armband holes are provided on both sides of the bottom shell for connecting the armband body.

[0013] Furthermore, a Bluetooth transceiver module is integrated at the bottom of the PCBA.

[0014] Compared with the prior art, the utility model provides a heart rate armband with wearing detection, which has the following beneficial effects:

[0015] The heart rate armband with wearing detection has added a mechanical sensor. When worn, it can read the pulling force of the armband body on the detection host, that is, the tightness of wearing, in real time. The detection host wirelessly sends the wearing status to the mobile phone APP to display it to the user, guiding the user to adjust the tightness of the armband body, thereby ensuring the detection accuracy of the optical sensor PPG. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is the structural explosion diagram of the utility model;

[0018] Figure 3 This is a system block diagram of the utility model;

[0019] Figure 4 It is a flow chart of the use status of the utility model;

[0020] Figure 5 It is a schematic diagram of the PPGPPG signal fluctuation of the optical sensor when the armband body of the utility model is worn too loosely;

[0021] Figure 6 It is a schematic diagram of the PPGPPG signal fluctuation of the optical sensor when the armband body of the utility model is worn too tightly;

[0022] Figure 7 This is a schematic diagram of the PPGPPG signal fluctuation of the optical sensor when the armband body of the utility model is normally worn.

[0023] In the figure: 1. detection host; 11. bottom shell; 111. lens; 12. surface shell; 13. PCBA; 131. Bluetooth transceiver module; 14. battery; 15. mechanical sensor; 16. optical sensor PPG; 17. spring; 171. conductive copper column; 18. magnet; 19. armband hole; 2. armband body. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-7 The utility model discloses a heart rate armband with wearing detection, comprising a detection host 1, on which an armband body 2 is arranged.

[0026] The detection host 1 includes a bottom shell 11, and a PCBA 13 is arranged inside the bottom shell 11. The PCBA 13 is electrically connected to a mechanical sensor 15 and an optical sensor PPG 16 embedded in the bottom of the bottom shell 11. A Bluetooth transceiver module 131 is integrated at the bottom of the PCBA 13. The PCBA 13 has its own MCU and can be connected to a mobile phone APP through the Bluetooth transceiver module 131.

[0027] Specifically, a face shell 12 is provided on the top of the bottom shell 11, and a battery 14 electrically connected to the PCBA 13 is provided inside the bottom shell 11. The battery 14 is used to power the PCBA 13, the mechanical sensor 15 and the optical sensor PPG 16. The mechanical sensor 15 and the optical sensor PPG 16 are electrically connected to the PCBA 13 through a flexible FPC. When the detection host 1 is tied to the user's limbs through the armband body 2, the limbs contact the mechanical sensor 15 through the lens 111 and the optical sensor PPG 16. The mechanical sensor 15 collects force information. The MCU can collect information from the mechanical sensor 15 in real time, judge the current wearing state, and send the current state to the mobile phone APP through the Bluetooth wireless transmission method to tell the customer whether the current wearing is reasonable. It is divided into four states, namely, wearing too tight, wearing properly, wearing too loose, and off-wrist (not wearing). The customer is reminded to adjust the tightness of the armband body 2 according to the current wearing state, so that the tightness of the armband body 2 is within an appropriate range. When the armband body 2 is off-wrist, the optical sensor PPG 16 is automatically turned off to save power consumption, making the operation of the detection host 1 simpler.

[0028] See also Figure 4 After the user puts on the armband body 2 and connects to the mobile phone APP, the armband body 2 will collect mechanical information in real time and feed it back to the mobile phone APP. The mobile phone APP will display the user's current wearing status in real time, reminding the customer to adjust the tightness of the armband body 2 according to the current wearing status, so that the tightness of the armband body 2 is within an appropriate range.

[0029] Figure 5 , Figure 6 , Figure 7 It is the difference in the optical sensor PPG16 signal under different wearing tightness. Too loose or too tight will greatly affect the signal-to-noise ratio of the optical sensor PPG16. Under reasonable wearing, the algorithm calculation result can be more accurate.

[0030] The user's heart rate calculation formula is: hr=fft(optical sensor PPG16 data). The heart rate can be obtained after Fourier transforming the data. When the optical sensor PPG16 signal-to-noise ratio is high, the heart rate accuracy will be higher.

[0031] Specifically, the bottom of the PCBA 13 is connected to a conductive copper column 171 through a spring 17, and the bottom end of the conductive copper column 171 extends to the bottom of the bottom shell 11. The conductive copper column 171 is conductively connected to the PCBA 13 through the spring 17. Figure 1 When the user needs to charge, he can use the charging connector to connect with the conductive copper column 171 at the bottom of the bottom shell 11. The number of the conductive copper column 171 and the spring 17 is not less than two.

[0032] Specifically, a magnet 18 is disposed inside the bottom shell 11 and is located on one side of the conductive copper column 171 . The number of the magnets 18 is the same as that of the conductive copper column 171 . The magnet 18 is used to adsorb the charging connector.

[0033] Specifically, a lens 111 located at the bottom of the optical sensor PPG16 is provided at the bottom of the bottom shell 11 , and the lens 111 is used to protect the optical sensor PPG16 .

[0034] Specifically, armband holes 19 are provided on both sides of the bottom shell 11 for connecting the armband body 2 .

[0035] To summarize, the heart rate armband with wearing detection, by adding a mechanical sensor 15, can read in real time the pulling force of the armband body 2 on the detection host 1, that is, the wearing tightness, when worn. The detection host 1 sends the wearing status to the mobile phone APP wirelessly and displays it to the user, guiding the user to adjust the wearing tightness of the armband body 2, thereby ensuring the detection accuracy of the optical sensor PPG16.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heart rate armband with wearing detection, comprising a detection host (1), characterized in that: The detection host (1) is provided with an armband body (2); The detection host (1) comprises a bottom shell (11), a PCBA (13) is arranged inside the bottom shell (11), and a mechanical sensor (15) and an optical sensor PPG (16) embedded in the bottom of the bottom shell (11) are electrically connected to the PCBA (13).

2. A heart rate armband with wearing detection according to claim 1, characterized in that: A surface shell (12) is arranged on the top of the bottom shell (11).

3. A heart rate armband with wearing detection according to claim 1, characterized in that: A battery (14) electrically connected to the PCBA (13) is arranged inside the bottom shell (11).

4. A heart rate armband with wearing detection according to claim 1, characterized in that: The bottom of the PCBA (13) is connected to a conductive copper column (171) via a spring (17), and the bottom end of the conductive copper column (171) extends to the bottom of the bottom shell (11).

5. A heart rate armband with wearing detection according to claim 1, characterized in that: A magnet (18) is arranged inside the bottom shell (11) and is located on one side of the conductive copper column (171).

6. A heart rate armband with wearing detection according to claim 1, characterized in that: The bottom of the bottom shell (11) is provided with a lens (111) located at the bottom of the optical sensor PPG (16).

7. A heart rate armband with wearing detection according to claim 1, characterized in that: Armband holes (19) are provided on both sides of the bottom shell (11) for connecting the armband body (2).

8. The heart rate armband with wearing detection according to claim 1, characterized in that: A Bluetooth transceiver module (131) is integrated at the bottom of the PCBA (13).

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