Heart rate arm band

Abstract

The utility model relates to a heart rate armband which comprises an armband body, a detection seat is arranged on the armband body, and a main control chip, an acceleration motion monitoring unit, a light sensation heart rate monitoring unit and a non-contact capacitance monitoring unit are arranged in the detection seat. Under normal conditions, the heart rate armband is in a deep dormancy state; when a user begins to move, the heart rate arm band is worn on an arm, firstly, the acceleration movement monitoring unit monitors a wearing action, the master control unit is awakened from a deep dormancy state, after the master control unit is awakened, the non-contact capacitance monitoring unit is immediately enabled to work, and when a wearing capacitance change signal on skin is monitored, the heart rate arm band is indicated to be started to work; when the user finishes exercise, the heart rate arm band is taken down from the arm, the non-contact capacitance monitoring unit immediately detects that induction with the skin is disconnected, and the heart rate arm band is automatically turned off and enters the low-power-consumption state of deep sleep again; and the user does not need any additional operation except the wearing action, so that the use is very convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of sports products, and more specifically to a heart rate armband. Background Art

[0002] Heart rate is an important physiological indicator during exercise. It can help athletes better understand their own exercise status and provide scientific exercise guidance. For example, controlling the heart rate in a certain range can burn fat more effectively. Among professional sports heart rate wearable devices, heart rate chest belts and heart rate armbands are the most widely used, among which heart rate armbands are more popular because of their convenience.

[0003] However, due to their structural or technical reasons, the heart rate armbands currently on the market generally require button operations to turn on and off, which are cumbersome to use. In particular, many products are designed with complex button methods, such as short press to turn on, long press or double press to shut down, etc., which increases the user's usage burden and affects the user experience. A buttonless heart rate armband product is needed to overcome the above defects. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a heart rate armband in view of the above-mentioned defects of the prior art.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A heart rate armband is constructed, which includes an armband body, a detection seat is arranged on the armband body, and a main control chip, an acceleration motion monitoring unit, a light-sensitive heart rate monitoring unit and a contactless capacitance monitoring unit are arranged in the detection seat;

[0007] The acceleration motion monitoring unit is used to monitor the motion state of the detection base and send a wake-up signal to the main control chip when the motion state meets the set conditions;

[0008] The contactless capacitance detection unit is used to monitor the wearing capacitance change signal on the skin, and send a corresponding processing signal to the main control chip when the capacitance change signal is detected to meet the set conditions;

[0009] The main control chip controls the start and stop of the light-sensitive heart rate monitoring unit according to the processed signal.

[0010] The heart rate armband described in the utility model, wherein the detection seat is provided with a wireless charging management chip, a wireless charging induction coil and a rechargeable battery;

[0011] The wireless charging induction coil is used to wirelessly charge the rechargeable battery;

[0012] The wireless charging management chip is used to control the wireless charging.

[0013] The heart rate armband of the utility model, wherein the detection seat is provided with a temperature control chip or the main control chip has a temperature control function, and a temperature monitoring unit;

[0014] The temperature monitoring unit is used to monitor the internal temperature of the detection seat;

[0015] The temperature control chip or the main control chip with temperature control function is used to reduce the charging current when the internal temperature of the detection seat reaches a first set value, and stop charging when the internal temperature of the detection seat reaches a second set value; the first set value is less than the second set value.

[0016] In the heart rate armband described in the utility model, a circuit board carrying the wireless charging management chip, the temperature control chip and the main control chip is arranged in the detection seat.

[0017] The heart rate armband described in the utility model, wherein the detection seat includes a bottom shell and a panel that cover each other, and the wireless charging induction coil, the circuit board, the rechargeable battery and the light-sensitive heart rate monitoring unit are sequentially distributed in the detection seat from top to bottom; the light-sensitive heart rate monitoring unit is electrically connected to the circuit board via an FPC cable.

[0018] The heart rate armband described in the utility model, wherein the bottom shell is provided with a hole for assembling the light-sensitive heart rate monitoring unit, and the light-sensitive heart rate monitoring unit is installed on the hole and fixed by sealing glue.

[0019] The heart rate armband described in the utility model, wherein the armband body also includes a connecting belt, and two ends of the connecting belt are respectively connected to two ends of the detection seat.

[0020] The heart rate armband described in the utility model, wherein the detection seat is also provided with an RGB status indicator light indicating a working status, and the RGB status indicator light is controlled and operated by the main control chip.

[0021] The beneficial effects of the utility model are: under normal circumstances, the heart rate armband is in a deep sleep state to save power;

[0022] When the user starts exercising, the heart rate armband is worn on the arm. First, the acceleration motion monitoring unit detects the wearing action and wakes up the main control from deep sleep. After the main control is awakened, the contactless capacitance monitoring unit is immediately enabled to work. When the wearing capacitance change signal on the skin is detected, the heart rate armband is instructed to start working.

[0023] After the heart rate armband is turned on, the optical heart rate monitoring unit starts to detect the blood flow signal and calculates the heart rate based on the flow cycle;

[0024] When the user finishes exercising and takes off the heart rate armband from the arm, the contactless capacitive monitoring unit immediately detects the disconnection from the skin, and the light-sensitive heart rate monitoring unit detects the loss of heart rate. The heart rate armband automatically shuts down and re-enters the low-power state of deep sleep.

[0025] The entire power on and off process is completed automatically. Apart from wearing the watch, the user does not need to perform any additional operations, making it very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. 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 these drawings without creative work:

[0027] Figure 1 This is a principle block diagram of a heart rate armband of a preferred embodiment of the utility model;

[0028] Figure 2 This is an exploded view of the heart rate armband structure of a preferred embodiment of the utility model;

[0029] Figure 3 It is a schematic diagram of wireless charging of a heart rate armband according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the following will be combined with the technical solution in the embodiments of the utility model for a clear and complete description. Obviously, the described embodiments are partial embodiments of the utility model, not all 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 utility model.

[0031] The heart rate armband of the preferred embodiment of the utility model is as follows Figure 1 See also Figure 2 and Figure 3 , including an armband body, on which a detection seat 2 is arranged, in which a main control chip 10, an acceleration motion monitoring unit 11, a light-sensitive heart rate monitoring unit 12 and a contactless capacitance monitoring unit 13 are arranged;

[0032] The acceleration motion monitoring unit 11 is used to monitor the motion state of the detection base and send a wake-up signal to the main control chip 10 when the motion state meets the set conditions;

[0033] The contactless capacitance detection unit 13 is used to monitor the capacitance change signal on the skin, and send a corresponding processing signal to the main control chip 10 when the capacitance change signal meets the set conditions;

[0034] The main control chip 10 controls the start and stop of the light-sensitive heart rate monitoring unit 13 according to the processed signal;

[0035] Under normal circumstances, the heart rate armband is in deep sleep mode to save power;

[0036] When the user starts to exercise, the heart rate armband is worn on the arm. First, the acceleration motion monitoring unit 11 will detect the wearing action and wake up the main control from the deep sleep state. After the main control is awakened, the contactless capacitance monitoring unit 13 is immediately enabled to work. When the wearing capacitance change signal on the skin is monitored, the heart rate armband is instructed to start working;

[0037] After the heart rate armband is turned on, the optical heart rate monitoring unit 12 starts to detect the blood flow signal and calculates the heart rate according to the flow cycle;

[0038] When the user finishes exercising and takes off the heart rate armband from the arm, the contactless capacitance monitoring unit 13 immediately detects the disconnection of the induction with the skin, and the light-sensitive heart rate monitoring unit detects the loss of heart rate, and the heart rate armband automatically shuts down and re-enters the low-power state of deep sleep;

[0039] The entire power on and off process is completed automatically. Apart from wearing the watch, the user does not need to perform any additional operations, making it very convenient to use.

[0040] It should be noted that:

[0041] The acceleration motion monitoring unit model can be QMA6100P;

[0042] The contactless capacitance monitoring unit model can be HK01BS;

[0043] The main control chip and temperature control chip model can use nRF52832;

[0044] The above models are only examples to illustrate the feasibility of the present application and are not intended to be limiting. Moreover, the above examples do not involve improvements to computer software, and the functions involved are all functions that the chip itself has.

[0045] At present, the heart rate detection technologies used in wearable devices mainly include PPG (light-sensitive heart rate monitoring) and ECG. PPG is a technology that uses photoplethysmography to detect the heart rate of human exercise. ECG detection technology uses electrodes attached above the heart, in direct contact with the skin, to collect human biological signals and analyze heart rate data. Compared with ECG, PPG does not require electrodes, does not need to be in direct contact with the body, and is more convenient to wear;

[0046] At present, the charging of heart rate armbands on the market generally adopts the conductive needle method, which is easy to oxidize and has poor waterproof performance. In addition, special charging heads are usually used. Once damaged, they can only be purchased from the original manufacturer. More importantly, the exposed conductive needles and capacitor electrodes are easily affected by external interference and wear, which causes poor contact and affects the user experience.

[0047] In this regard, the detection base of the present application is also provided with a wireless charging management chip 14, a wireless charging induction coil 15 and a rechargeable battery 16;

[0048] A wireless charging induction coil 15 is used to wirelessly charge a rechargeable battery 16;

[0049] The wireless charging management chip 14 is used to control the wireless charging.

[0050] like Figure 3 As shown, after the user takes off the armband, the user can directly place the armband on the mobile phone wireless charging base 3 (it can also be other charging bases, which are not limited to this), and the wireless charging induction coil 15 on the heart rate armband will immediately sense the magnetic field from the mobile phone wireless charging base 3, complete the charging confirmation through the standard wireless charging protocol, and start charging the charging battery;

[0051] Among them, the wireless charging management chip model can be NU1680, SGM40561, etc.; of course, the above models are only examples to illustrate the feasibility of this application and are not intended to be limiting;

[0052] Furthermore, the detection seat 2 is provided with a temperature control chip 17 or a main control chip having a temperature control function (both methods can be realized), and a temperature monitoring unit 18;

[0053] The temperature monitoring unit 18 is used to monitor the internal temperature of the detection seat 2;

[0054] The temperature control chip 17 or the main control chip with temperature control function is used to reduce the charging current when the internal temperature of the detection seat 2 reaches a first set value, and stop charging when the internal temperature of the detection seat reaches a second set value; the first set value is less than the second set value;

[0055] As we all know, during the battery charging process, the temperature of the battery will gradually rise due to chemical reactions. At the same time, the current generated by the wireless charging induction coil in magnetic induction will rapidly heat up the coil itself, which will further increase the temperature of the battery. Excessive temperature can easily cause the battery to swell or even explode. Therefore, temperature control measures must be taken for charging safety.

[0056] In order to control the temperature within a controllable range during charging, the temperature control monitoring unit inside the heart rate armband monitors the temperature inside the shell in real time. When the temperature exceeds 35 degrees (only for example, other temperature values ​​can be selected as needed), the temperature control chip 17 or the main control chip with temperature control function gradually reduces the charging current. When the temperature exceeds 45 degrees (only for example, other temperature values ​​can be selected as needed), charging is stopped immediately to avoid further increase in battery temperature and eliminate safety hazards.

[0057] The current reduction method can be controlled by existing methods, such as reducing the current by multi-speed adjustment, or controlling the charging current by controlling the charging duty cycle through PWM, etc.

[0058] Preferably, a circuit board 19 carrying a wireless charging management chip, a temperature control chip and a main control chip is provided in the detection seat 2 .

[0059] Preferably, the detection seat 2 includes a covering bottom shell 20 and a panel 21, and the wireless charging induction coil 15, the circuit board 19, the rechargeable battery 16 and the light-sensitive heart rate monitoring unit 12 are sequentially distributed in the detection seat from top to bottom; the light-sensitive heart rate monitoring unit 12 is electrically connected to the circuit board 19 through an FPC cable; the structural layout is reasonable, the integrity is good, and the assembly is convenient.

[0060] Preferably, a hole for assembling the light-sensitive heart rate monitoring unit 12 is provided on the bottom shell 20, and the light-sensitive heart rate monitoring unit 12 is installed in the hole and fixed by sealing glue; adopting this structure, fixed assembly and waterproof effect can be well achieved, with good sealing and strong anti-interference ability.

[0061] Preferably, the armband body also includes a connecting strap, and the two ends of the connecting strap are respectively connected to the two ends of the detection seat 2; of course, it is understandable that the connecting strap can also have other forms, such as being designed as an elastic claw, a wrist guard, etc., and the solution obtained by simple replacement based on this form also belongs to the protection scope of this application.

[0062] Preferably, the detection seat 2 is also provided with an RGB status indicator light 5 indicating the working status (which can also be equivalently replaced by other existing indicating components), and the RGB status indicator light 5 is controlled and operated by the main control chip 10; the status indication of the RGB status indicator light 5 may include indicating the power on and off status of the heart rate armband, indicating the current heart rate range for different heart rate changes, whether the temperature is normal, etc.

[0063] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A heart rate armband, characterized in that: It includes an armband body, on which a detection seat is arranged, in which a main control chip, an acceleration motion monitoring unit, a light-sensitive heart rate monitoring unit and a contactless capacitance monitoring unit are arranged; The acceleration motion monitoring unit is used to monitor the motion state of the detection base and send a wake-up signal to the main control chip when the motion state meets the set conditions; The contactless capacitance monitoring unit is used to monitor the wearing capacitance change signal on the skin, and send a corresponding processing signal to the main control chip when the capacitance change signal is detected to meet the set conditions; The main control chip controls the start and stop of the light-sensitive heart rate monitoring unit according to the processed signal.

2. The heart rate armband according to claim 1, characterized in that: The detection base is provided with a wireless charging management chip, a wireless charging induction coil and a rechargeable battery; The wireless charging induction coil is used to wirelessly charge the rechargeable battery; The wireless charging management chip is used to control the wireless charging.

3. The heart rate armband according to claim 2, characterized in that: The detection seat is provided with a temperature control chip or the main control chip has a temperature control function, and a temperature monitoring unit; The temperature monitoring unit is used to monitor the internal temperature of the detection seat; The temperature control chip or the main control chip with temperature control function is used to reduce the charging current when the internal temperature of the detection seat reaches a first set value, and stop charging when the internal temperature of the detection seat reaches a second set value; the first set value is less than the second set value.

4. The heart rate armband according to claim 3, characterized in that: A circuit board carrying the wireless charging management chip, the temperature control chip and the main control chip is arranged in the detection seat.

5. The heart rate armband according to claim 4, characterized in that: The detection seat includes a bottom shell and a panel that cover each other. The wireless charging induction coil, the circuit board, the rechargeable battery and the light-sensitive heart rate monitoring unit are sequentially distributed in the detection seat from top to bottom; the light-sensitive heart rate monitoring unit is electrically connected to the circuit board via an FPC cable.

6. The heart rate armband according to claim 5, characterized in that: The bottom shell is provided with a hole for assembling the light-sensitive heart rate monitoring unit, and the light-sensitive heart rate monitoring unit is installed on the hole and fixed by sealing glue.

7. The heart rate armband according to claim 5, characterized in that: The armband body also includes a connecting belt, and two ends of the connecting belt are respectively connected to two ends of the detection seat.

8. The heart rate armband according to claim 1, characterized in that: The detection seat is also provided with an RGB status indicator light indicating the working status, and the RGB status indicator light is controlled and operated by the main control chip.

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