CN109998516A - Heart rate paste and heart rate monitor - Google Patents

Abstract

The embodiment of the present invention discloses a heart rate sticker and a heart rate monitor, wherein the heart rate sticker includes: a power supply module and a heart rate sensor, the power supply module is connected to the heart rate sensor, and is used for supplying power to the heart rate sensor; the power supply module includes a coil winding and a power storage device unit, the coil winding and the external generator coil generate electrical energy through electromagnetic induction and/or magnetic resonance and store the electrical energy in the power storage unit; the heart rate sensor is used to detect the user's heart rate and obtain heart rate detection data. In the embodiment of the present invention, a power supply module including a coil winding and a power storage unit is provided in the heart rate sticker, and the coil winding and an external generator coil generate electrical energy through electromagnetic induction and/or magnetic resonance, and store the electrical energy in the power storage unit without the need for batteries. The volume of the heart rate sticker is additionally occupied, and the heart rate sticker of the embodiment of the present invention does not constrain the activity space of the tester, thereby improving the lightness rate.

Description

A heart rate sticker and heart rate monitor

technical field

The embodiments of the present invention relate to the technical field of heart rate detection and the technical field of electronic products, and in particular, to a heart rate sticker and a heart rate monitor.

Background technique

With the development of science and technology and the improvement of people's living standards, more and more electronic products are used in the monitoring of people's physical health, such as heart health. Accurate detection of heart rate is of great significance for people to monitor heart health.

At this stage, there are many methods of heart rate testing, mainly including sound, light, electricity and pressure, such as blood oxygen method, photoplethysmography, electrocardiogram method and arterial pressure method. Among them, the heart rate test through sound can use the principle of ultrasound Doppler to check the heartbeat, and the common fetal heart rate monitor is this principle. The blood oxygen method can be realized by a heart rate tester clipped on the tip of the index finger. The advantage of the blood oxygen method is that it provides two signals of heart rate and blood oxygen saturation. The disadvantage is that it needs to receive the transmitted light signal at the other end, so this part of human tissue is It must be thin enough, and the only suitable positions are fingertips and earlobes, and the scope of use is relatively limited. Photovolumetric methods work by tracking the reflection of visible light, such as green light, in human tissue. Since the capillaries and arterial veins keep getting bigger and smaller with the pulse volume, the reflection of light is the fluctuation value. The frequency of this fluctuation is the pulse, which is generally consistent with the heart rate. This method can only get the heart rate signal, but the noise resistance caused by relative movement is relatively strong, which is very suitable for the current sports watch.

The ECG signal method can be measured by an electrocardiograph. The sinus node rhythmically controls the systole and diastole of the heart to pump blood to the trunk. This control signal is an electrical signal that gradually spreads to the body surface and can be measured by electrodes on the skin. However, because the wavelength of the ECG signal is very long, in order to measure the signal with sufficient accuracy, the signal electrode and the reference electrode must be far enough apart in the trunk space, and the use is limited. The arterial blood pressure method is a pulse diagnosis in traditional Chinese medicine. On both sides of the wrist or neck, the pressure of the arteries can be felt regularly through the skin. The pressure sensor can convert this signal into a heart rate. However, the pressure sensor needs to semi-compress the wearer's artery for a long time, and it is uncomfortable, and it is difficult to fix the pressure sensor on the skin surface in a suitable way. If the fixation is too tight, it will lead to poor blood flow, and if the fixation is too loose, the measurement cannot be achieved. Inconvenient to use.

In the existing heart rate test, various fixture-type instruments need to be worn, which restricts the tester's activity space to a certain extent and brings various inconveniences.

SUMMARY OF THE INVENTION

The embodiments of the present invention provide a heart rate sticker and a heart rate monitor, which can improve the ease of heart rate testing.

In a first aspect, an embodiment of the present invention provides a heart rate sticker, including a power supply module and a heart rate sensor;

the power supply module is connected to the heart rate sensor, and is used for supplying power to the heart rate sensor;

The power supply module includes a coil winding and a power storage unit, the coil winding and an external generator coil generate electrical energy through electromagnetic induction and/or magnetic resonance and store the electrical energy in the power storage unit;

The heart rate sensor is used to detect the user's heart rate and obtain heart rate detection data.

Further, the heart rate sticker further includes a data storage module, one end of the data storage module is connected to the power supply module, and the other end of the data storage module is connected to the heart rate sensor for acquiring the heart rate detection data .

Further, the heart rate sticker further includes a radio frequency control chip, and the radio frequency control chip is connected to the power supply module and the data storage module, and is used to send a radio frequency identification code to an external radio frequency reading chip, so as to obtain the The data storage module reads the heart rate detection data and sends it to the radio frequency reading chip.

Further, the power supply module further includes a power detection chip, and the power detection chip is connected to the power storage unit for detecting the power.

Further, the power storage unit includes a diode and a capacitor, and the diode is connected to the capacitor.

Further, the heart rate sticker further includes a coil matching circuit, and the coil matching circuit is connected to the coil winding, so that the coil winding can be adjusted by adjusting the parameters of the coil matching circuit or the number of turns of the coil winding. The same frequency as the generator coil.

In a second aspect, an embodiment of the present invention further provides a heart rate monitor, including the above-mentioned heart rate sticker, a generator coil, and a radio frequency reading chip.

Further, the generator coil is used to provide alternating current and the coil winding in the heart rate sticker to generate electrical energy through electromagnetic induction and/or magnetic resonance.

Further, the radio frequency reading chip is used to obtain heart rate detection data by identifying the radio frequency control chip in the heart rate sticker.

Further, the radio frequency reading chip includes a radio frequency antenna and a radio frequency control unit, and the radio frequency control unit is connected with the radio frequency antenna and is used for controlling the radio frequency antenna to radiate electromagnetic waves.

In the embodiment of the present invention, a power supply module including a coil winding and a power storage unit is provided in the heart rate sticker, and the coil winding and an external generator coil generate electrical energy through electromagnetic induction and/or magnetic resonance, and store the electrical energy in the power storage unit without the need for batteries. The volume of the heart rate sticker is additionally occupied, and the heart rate sticker of the embodiment of the present invention does not constrain the activity space of the tester, thereby improving the lightness rate.

Description of drawings

1 is a schematic structural diagram of a heart rate sticker in Embodiment 1 of the present invention;

2 is another schematic structural diagram of the heart rate sticker in Embodiment 1 of the present invention;

3 is a schematic structural diagram of a coil matching circuit in Embodiment 1 of the present invention;

4 is a schematic diagram of a heart rate sticker in Embodiment 1 of the present invention;

5 is another schematic diagram of the heart rate sticker in Embodiment 1 of the present invention;

FIG. 6 is a schematic structural diagram of a heart rate monitor in Embodiment 2 of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the present invention.

Example 1

FIG. 1 is a schematic structural diagram of a heart rate sticker in Embodiment 1 of the present invention. As shown in FIG. 1 , the heart rate sticker 10 includes: a power supply module 11 and a heart rate sensor 12 , wherein the power supply module 11 is connected to the heart rate sensor 12 for supplying power to the heart rate sensor 12 ; the power supply module 11 includes a coil winding 111 and a power storage unit 112 , the coil winding 111 and the external generator coil generate electrical energy through electromagnetic induction and store the electrical energy in the power storage unit 112 ; the heart rate sensor 12 is used to detect the user's heart rate and obtain heart rate detection data.

The heart rate sticker 10 in this embodiment may take the form of a sticky note. The external generator coil can inductively supply power with the AC power source, and when the AC power passes through the generator coil, an electromagnetic field of a certain frequency is generated. When the coil winding 111 in the power supply module 11 is close to the power generating coil, the power generating coil can generate electric energy in the coil winding 111 through electromagnetic induction, and/or, when the frequency of the coil winding 111 is adjusted to be the same as the power generating coil, the power is generated in the coil winding by magnetic resonance. 111 to generate electricity. Therefore, a coil matching circuit can be set in the heart rate sticker 10 to adjust the frequency of the coil winding 111 , see FIG. 3 .

Further, the coil winding 111 may be a circular coil or a square coil. When the coil winding 111 is a circular coil, the magnetic field strength is determined by the formula to represent, where μ ₀ is the dielectric constant of free space (μ ₀ =4π×10 ^-7 H/m), Y is the magnetic field strength, R is the coil radius, N is the number of turns of the circular coil, and I is the circle The current in the coil, x is the action distance. When the coil winding 111 is a square coil with a length a and a width b, the magnetic induction intensity is calculated by the formula to represent, where μ ₀ is the dielectric constant of free space (μ ₀ =4π×10 ^-7 H/m), B is the magnetic induction intensity, N is the number of turns of the square coil, I is the current in the square coil, x is the working distance.

In this embodiment, a square coil is used as an example for description. When x ² >>ab, the magnetic induction intensity can be simplified as: From this, a conclusion can be drawn that the magnetic induction intensity B at a certain point is inversely proportional to the distance x from the point to the center of the square coil, and B will decrease very rapidly as x increases. According to the law of electromagnetic induction, the induced voltage of the coil winding 111 can be expressed as Wherein N is the number of turns of the coil winding 111 , and Φ is the magnetic flux passing through the coil winding 111 .

Assuming that the area of the coil winding 111 is S, α is the angle between the magnetic induction intensity B generated by the power generating coil and the coil winding 111 . When the generator coil is parallel to the coil winding 111, that is, when α=90°, all Φ passes through the coil winding 111, and the maximum induced voltage generated on the coil winding 111 can be expressed as Wherein V is the induced voltage on the coil winding 111, N1 is the number of coil turns of the generator coil, N2 is the number of coil turns of the coil winding 111, a is the side length (square) of the generator coil, and b is the side length of the coil winding 111 ( square), x is the distance between the generator coil and the coil winding 111, and i is the instantaneous current flowing through the generator coil. Thus, the induced DC voltage V _DC generated on the coil winding 111 by the magnetic field of the power generating coil can be expressed as V _DC =2πf NSQBsinα, where N is the number of turns of the power generating coil, S is the area of the coil winding 111 , and Q is the The quality factor of the coil winding 111 .

Optionally, the heart rate sticker 10 further includes a coil matching circuit, and the coil matching circuit is connected with the coil winding 111 to adjust the parameters of the coil matching circuit or the number of turns of the coil winding 11, so that the frequency of the coil winding 111 is the same as that of the generator coil. . 3 is a schematic structural diagram of the coil matching circuit in the first embodiment of the present invention, including a resistor, a tuning capacitor and a coil winding 111. The coil matching circuit can be equivalent to an RLC series circuit, where R is the resistance of the coil winding 111, and L is the The inductance of the coil winding 111, C is the tuning capacitance of the coil winding 111, and the parameter of the coil matching circuit is the tuning capacitance. The frequency of the coil winding 111 can be obtained by the formula To express, the quality factor Q can be expressed by the formula to indicate that the frequency can be set according to the actual situation. In this embodiment, the frequency of 13.56 MHz is used as an example for description. When the frequency of the generator coil is determined to be 13.56MHz, by adjusting the tuning capacitance of the coil matching circuit or the number of turns of the coil winding 111 so that the frequency of the coil winding 111 is the same as that of the generator coil, electrical energy is generated in the coil winding 111 through magnetic resonance.

The heart rate sensor 12 can be a photoelectric volume method heart rate sensor, which measures the user's heart rate by detecting the intensity of reflected light from human skin. Optionally, the photovolumetric heart rate sensor includes at least one light emitting diode and a phototransistor, the light emitting diode can emit light to illuminate the user's skin, and the phototransistor receives the light reflected from the user's skin. Through the cooperation of light-emitting diodes and phototransistors, the photovolumetric heart rate sensor can monitor the changes of the reflected light intensity of the user's skin caused by the periodic circulation of blood in real time, so as to obtain the user's heart rate detection data.

FIG. 2 is another schematic structural diagram of the heart rate sticker in Embodiment 1 of the present invention. As shown in FIG. 2 , the heart rate sticker 10 further includes a data storage module 13, one end of the data storage module 13 is connected to the power supply module 11, and the data storage module The other end of 13 is connected to the heart rate sensor 12 for acquiring heart rate detection data.

Further, the heart rate sticker 10 further includes a radio frequency control chip 14, and the radio frequency control chip 14 is connected to the power supply module 11 and the data storage module 13, and is used to send the radio frequency identification code to the external radio frequency reading chip, so as to obtain the data from the data storage module 13. Read the heart rate detection data and send it to the radio frequency reading chip. The radio frequency control chip 14 can read the heart rate detection data in the data storage module 13 and save it in the radio frequency identification code, and send it to an external radio frequency reading chip through the radio frequency identification code.

Further, the power supply module 11 further includes a power detection chip 113, and the power detection chip 113 is connected to the power storage unit 112 for detecting the power. When the heart rate sticker 10 is used and charged for the first time, the heart rate sticker 10 can stay in the external generator coil attachment for a long time. Ensure that the heart rate sensor 12 and other devices in the heart rate sticker 10 are initialized. Moreover, when the power detection chip 113 detects that the power of the power storage unit 112 is less than the preset power threshold, it can send a signal to the data storage module 13 to obtain stable heart rate detection data collected by the heart rate sensor 12 . It is realized that the heart rate detection data will be stored even when the power storage unit 112 in the heart rate sticker 10 is powered down.

Optionally, the power storage unit 112 may include a diode and a capacitor, and the diode is connected with the capacitor. Specifically, the diode is connected with the resistance capacitor to form a one-way electronic valve, and the one-way electronic valve is connected with the capacitor. Due to the reverse characteristic of the diode, the structure of the one-way electronic valve makes the electric charge concentrated and not scattered, and does not flow backward, and the capacitance discharges slowly. When the capacitor in the power storage unit 112 is charged to a preset voltage (eg, 2V), the power storage unit 112 can be used as a power source to provide a working voltage for the devices in the heart rate sticker 10 .

FIG. 4 is a schematic diagram of the heart rate sticker in Embodiment 1 of the present invention. As shown in the figure, the heart rate sticker 10 can be set to be similar in appearance to a sticky note, so that the user can use it more conveniently and efficiently. The specific internal structure can be seen in FIG. 5 , which is another schematic diagram of the heart rate sticker in Embodiment 1 of the present invention. In FIG. 5 , the outermost coil winding 111 is set, and the power storage unit 112 (not shown in FIG. 5 ), the heart rate sensor 12 , the data storage module 13 and the radio frequency control chip 14 can be set inside. The coil winding 111 and the power storage unit 112 form a power supply Module 11, the power supply module 11 is connected to the heart rate sensor 12, the data storage module 13 and the radio frequency control chip 14 to supply power, and the other end of the data storage module 13 is connected to the heart rate sensor 12 for obtaining the heart rate detection data collected by the heart rate sensor 12. The control chip 14 is connected to the data storage module 13 for sending a radio frequency identification code to an external radio frequency reading chip, so as to read the heart rate detection data from the data storage module 13 and send it to the radio frequency reading chip.

It can be understood that the heart rate sticker 10 shown in FIG. 4 and FIG. 5 is only an example, and other shapes and structures that meet the function and use requirements are also applicable, and should not bring any function and use scope of the embodiment of the present invention. limit.

In the technical solution provided by this embodiment, a power supply module including a coil winding and a power storage unit is provided in the heart rate sticker, and the coil winding and an external generator coil generate electrical energy through electromagnetic induction and/or magnetic resonance, and store the electrical energy into the power storage unit. The unit does not need the battery to additionally occupy the volume of the heart rate sticker. The heart rate sticker of this embodiment does not constrain the tester's activity space, thereby improving the portability.

Embodiment 2

FIG. 6 is a schematic structural diagram of a heart rate monitor in Embodiment 2 of the present invention. FIG. 6 shows a block diagram of an exemplary heart rate monitor 20 . The heart rate monitor 20 shown in FIG. 6 is only an example, and should not impose any limitations on the functions and scope of use of the embodiments of the present invention.

As shown in FIG. 6 , the heart rate monitor 20 may include the heart rate sticker 10 , the generator coil 21 and the radio frequency reading chip 22 as described above. The generator coil 21 is used for providing alternating current and the coil winding 111 in the heart rate sticker 10 generates electrical energy through electromagnetic induction. The radio frequency reading chip 22 is used to obtain heart rate detection data by identifying the radio frequency control chip 14 in the heart rate sticker 10 .

Further, the radio frequency reading chip 22 may include a radio frequency antenna and a radio frequency control unit, the radio frequency control unit is connected with the radio frequency antenna, and is used for controlling the radio frequency antenna to radiate electromagnetic waves. When the radio frequency control chip 14 in the heart rate sticker 10 enters the electromagnetic wave range of the radio frequency reading chip 22, the electromagnetic wave will change, and the radio frequency antenna will send a signal to the radio frequency control unit when it receives the feedback electromagnetic wave change, so that the radio frequency control The unit acquires the radio frequency identification code of the radio frequency control chip 14, and performs identification to obtain the heart rate detection data therein. The dotted arrow between the heart rate sticker 10 and the power generating coil 21 in FIG. 3 indicates that electrical energy can be generated by electromagnetic induction or magnetic resonance between the coil winding 111 in the heart rate sticker 10 and the power generating coil 21 . The solid arrows between the heart rate sticker 10 and the radio frequency reading chip 22 in FIG. 3 indicate that heart rate detection data can be transmitted between the radio frequency control chip 14 and the radio frequency reading chip 22 in the heart rate sticker 10 .

The generating coil 21 and the radio frequency reading chip 22 in this embodiment may be arranged in the same device, or may be arranged in different devices respectively. The generator coil 21 can be installed in various external devices, which is not limited in this embodiment. For example, the generator coil 21 can be installed in the armrest of a wheelchair or a bedside fence or other equipment to facilitate charging the heart rate monitor 10 .

The technical solution provided in this embodiment separates the physical contact between the heart rate sticker for detecting heart rate and the radio frequency reading chip for reading heart rate detection data, so that the heart rate sticker is not limited by space, and the heart rate sticker passes through the coil in the power supply module. The windings and the external generator coil generate electrical energy through electromagnetic induction and/or magnetic resonance and store the electrical energy in the power storage unit, without the need for the battery to occupy the additional volume of the heart rate sticker, and without restricting the activities of the tester, further improving the portability.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention. The scope is determined by the scope of the appended claims.

Claims (10)

1. a kind of heart rate patch, which is characterized in that including power supply module and heart rate sensor；

The power supply module is connect with the heart rate sensor, for powering to the heart rate sensor；

The power supply module includes coil windings and charge storage unit, and the coil windings and external power coil pass through electromagnetism sense It answers and/or magnetic resonance produces electricl energy and stores electric energy to the charge storage unit；

The heart rate sensor obtains heart rate detection data for detecting the heart rate of user.

2. heart rate patch according to claim 1, which is characterized in that further include data memory module, the data store mould One end of block is connect with the power supply module, and the other end of the data memory module is connect with the heart rate sensor, is used for Obtain the heart rate detection data.

3. heart rate patch according to claim 2, which is characterized in that it further include radio frequency control chip, the radio frequency control core Piece is connect with the power supply module, the data memory module, sends radio-frequency identification code for reading chip to external radio frequency, The radio frequency reading chip is sent to read heart rate detection data from the data memory module.

4. heart rate patch according to claim 1, which is characterized in that the power supply module further includes electric power detection chip, institute It states electric power detection chip to connect with the charge storage unit, for detecting electricity.

5. heart rate according to claim 1 patch, which is characterized in that the charge storage unit includes diode and capacitor, described Diode and the capacitance connection.

6. heart rate patch according to claim 1, which is characterized in that it further include coil match circuit, the coil matching electricity Road is connected with the coil windings, with the coil turn of parameter or the coil windings by adjusting the coil match circuit Number, keeps the coil windings identical as the frequency of the power coil.

7. a kind of heart rate monitor, which is characterized in that including heart rate as claimed in any one of claims 1 to 6 patch, power coil and Radio frequency reads chip.

8. heart rate monitor according to claim 7, which is characterized in that the power coil for provide alternating current with Coil windings in the heart rate patch are produced electricl energy by electromagnetic induction and/or magnetic resonance.

9. heart rate monitor according to claim 7, which is characterized in that the radio frequency reads chip and is used for by described The identification of radio frequency control chip, obtains heart rate detection data in heart rate patch.

10. heart rate monitor according to claim 7, which is characterized in that it includes radio-frequency antenna that the radio frequency, which reads chip, With radio frequency control unit, the radio frequency control unit is connect with the radio-frequency antenna, for controlling the radio-frequency antenna radiation electric Magnetic wave.