CN211674210U - Heart rate detection device and heart rate detection earphone - Google Patents
Heart rate detection device and heart rate detection earphone Download PDFInfo
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- CN211674210U CN211674210U CN201920981827.3U CN201920981827U CN211674210U CN 211674210 U CN211674210 U CN 211674210U CN 201920981827 U CN201920981827 U CN 201920981827U CN 211674210 U CN211674210 U CN 211674210U
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Abstract
A heart rate detection device and a heart rate detection earphone comprise a first infrared emission module, a second infrared emission module, a first infrared receiving module, a second infrared receiving module, a first biological sensing signal processing module, a second biological sensing signal processing module, a control module, a Bluetooth module and an audio signal processing module; the heart rate state is detected through a plurality of infrared transmitting modules and a plurality of infrared receiving modules to generate a plurality of heart rate detection signals, a first biosensing signal processing module and a second biosensing signal processing module generate a plurality of heart rate detection serial signals according to the heart rate detection signals, a control module generates heart rate detection communication signals according to the heart rate detection serial signals, and a Bluetooth module generates wireless sending signals according to the heart rate detection communication signals and wirelessly transmits the wireless sending signals to a terminal; therefore, when the audio signal is played, the heart rate state can be detected in real time, the heart rate detection precision is improved, and the heart rate detection earphone is small in size, convenient to carry and use.
Description
Technical Field
The utility model belongs to the technical field of intelligence wearing equipment, especially, relate to a rhythm of heart detection device and rhythm of heart detect earphone.
Background
At present, with the attention of people on health, various fitness exercise modes are added on one hand, and on the other hand, the change of body parameters at various stages of fitness exercise is focused more, and the exercise mode and the exercise amount are adjusted in time, so that a better fitness exercise effect is achieved. Wherein, the physical parameters such as heart rate, the heart rate is the frequency of heartbeat which we often say, whether it is aerobic exercise or anaerobic exercise, there is a proper heart rate to achieve better exercise effect, and it is important to exercise effect and exercise safety to keep the best exercise heart rate. Various wearable devices with heart rate monitoring functions are derived based on the fact that people pay more attention to heart rate conditions in the exercise process. The heart rate monitoring earphone is small in size, and can monitor the heart rate and listen to music at the same time, so that the heart rate monitoring earphone is widely concerned.
However, some heart rate earphones fix the heart rate sensor at the front end of the earphone, measure the heart rate by being attached to the skin in front of the ears, and are poor in detection accuracy; some heart rate sensors are arranged in earphones, but heart rate detection is only carried out according to a single collected heart rate state signal, so that heart rate detection errors are large, and the state of a heart rate monitoring device cannot be visually displayed through the earphones; and some heart rate monitoring devices are large in size and large in power consumption, and are not beneficial to carrying and energy saving.
Therefore, the traditional technical scheme has the defects of poor detection precision, large power consumption and incapability of visually displaying the state of the heart rate monitor through an earphone.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a heart rate detection device aims at solving the problem that the detection precision that exists is poor among the traditional technical scheme, the consumption is big and can not pass through the audio-visual heart rate monitor state of demonstration of earphone.
The utility model discloses a first aspect of the embodiment provides a rhythm of heart detection device, rhythm of the heart detection device includes:
and the first infrared emission module is used for generating first test infrared light according to the first driving signal.
And the second infrared emission module is used for generating second test infrared light according to the second driving signal.
The first infrared receiving module is used for capturing first infrared reflected light generated by the first test infrared light through the reflection of a human body and third infrared reflected light generated by the second test infrared light through the reflection of the human body, and generating a first heart rate detection signal and a third heart rate detection signal according to the first infrared reflected light and the third infrared reflected light respectively.
And the second infrared receiving module is used for capturing second infrared reflected light generated by the second test infrared light reflected by a human body and generating a second heart rate detection signal according to the second infrared reflected light.
And the first biological sensing signal processing module is connected with the first infrared transmitting module and the first infrared receiving module, and is used for generating the first driving signal according to a first control signal and generating a first heart rate detection serial signal and a third heart rate detection serial signal according to the first heart rate detection signal and the third heart rate detection signal respectively.
And the second biological sensing signal processing module is connected with the second infrared transmitting module and the second infrared receiving module and is used for generating the second driving signal according to a second control signal and generating a second heart rate detection serial signal according to the second heart rate detection signal.
And the control module is connected with the first biological sensing signal processing module and the second biological sensing signal processing module and used for generating the first control signal and the second control signal according to a starting signal and generating a heart rate detection communication signal according to the first heart rate detection serial signal, the second heart rate detection serial signal and the third heart rate detection serial signal.
And the Bluetooth module is connected with the control module and used for generating a wireless sending signal according to the heart rate detection communication signal and generating the starting signal and the audio signal according to a wireless receiving signal.
And the audio signal processing module is connected with the Bluetooth module and used for playing according to the audio signal.
In one embodiment, the heart rate detection apparatus further includes:
and the motion state sensing module is connected with the control module and used for detecting the motion state of the human body according to the interrupt awakening signal so as to generate a motion state signal.
The control module is specifically configured to generate an interrupt wakeup signal, and generate a heart rate detection communication signal according to the motion state signal and the first heart rate detection serial signal, the second heart rate detection serial signal, and the third heart rate detection serial signal.
In one embodiment, the heart rate detection apparatus further includes:
and the first power supply conversion module is connected with the Bluetooth module and used for generating a battery power supply according to an external power supply so as to supply power to the Bluetooth module.
And the second power supply conversion module is connected with the first power supply conversion module, the Bluetooth module and the control module and is used for converting the battery power supply according to a switching signal so as to generate a first power supply to supply power to the control module.
And the third power supply conversion module is connected with the first power supply conversion module, the first biological sensing signal processing module, the second biological sensing signal processing module, the first infrared emission module, the motion state sensing module, the second infrared emission module and the control module, and is used for converting the battery power supply according to an enabling signal to generate a second power supply to supply power to the first biological sensing signal processing module, the second biological sensing signal processing module, the motion state sensing module, the first infrared emission module and the second infrared emission module.
The Bluetooth module is further used for generating the switch signal according to key input. The control module generates the enable signal according to the start signal.
In one embodiment, the control module comprises a microprocessor, a first resistor, a second resistor and a third capacitor.
And the first data input and output end of the microprocessor is a starting signal input end of the control module.
And a second data input and output end of the microprocessor is a heart rate detection communication signal output end of the control module.
And the third data input and output end of the microprocessor is an interrupt awakening signal output end of the control module.
And the fourth data input and output end of the microprocessor and the fifth data input and output end of the microprocessor are jointly formed into a motion state signal input end of the control module.
The sixth data input and output end of the microprocessor, the seventh data input and output end of the microprocessor and the eighth data input and output end of the microprocessor are jointly formed into a first control signal output end of the control module, a first heart rate detection serial signal input end of the control module and a third heart rate detection serial signal input end of the control module.
And a ninth data input and output end of the microprocessor is an enabling signal output end of the control module.
And a tenth data input and output end of the microprocessor, an eleventh data input and output end of the microprocessor and a twelfth data input and output end of the microprocessor are jointly formed into a second control signal output end of the control module.
The power supply end of the microprocessor is a first power supply input end of the control module.
The power supply monitoring starting end of the microprocessor is connected with the first end of the first resistor, the second end of the first resistor is connected with the first power supply, and the ground end of the microprocessor is connected with the power supply ground.
And a battery power supply end of the microprocessor is connected with a first end of the second resistor, and a second end of the second resistor is a battery power supply input end of the control module.
And the voltage stabilizing end of the microprocessor is connected with the first end of the third capacitor, and the second end of the third capacitor is connected with a power ground.
In one embodiment, the motion state sensing module comprises a first capacitor, a second capacitor and an acceleration sensor.
The power end of the acceleration sensor and the data input/output power supply end of the acceleration sensor are connected with the first end of the first capacitor and the first end of the second capacitor, the second end of the first capacitor and the second end of the second capacitor are connected with a power ground, and the first end of the second capacitor is the second power input end of the motion state sensing module.
And the ground end of the acceleration sensor and the reset end of the acceleration sensor are connected with a power supply ground.
And the communication serial clock end of the acceleration sensor and the communication serial data end of the acceleration sensor are jointly formed into a motion state signal output end of the motion state sensing module.
And the serial data output end of the acceleration sensor and the serial row enable end of the acceleration sensor are connected with the second power supply.
And the interrupt end of the acceleration sensor is an interrupt awakening signal input end of the motion state sensing module.
In one embodiment, the first infrared emission module comprises a first infrared emission tube. The second infrared emission module comprises a second infrared emission tube. The first infrared receiving module comprises a first infrared receiving tube. The second infrared receiving module comprises a second infrared receiving tube.
In one embodiment, the first biosensing signal processing module and the second biosensing signal processing module each comprise a biosensing signal processing unit, and the biosensing signal processing unit comprises a first analog front-end chip.
The cathode connecting end of the first analog front-end chip and the anode connecting end of the first analog front-end chip are jointly formed into a first heart rate detection signal input end of the biosensing signal processing unit and a third heart rate detection signal input end of the biosensing signal processing unit.
And the input/output supply end of the first analog front-end chip is a second power supply input end of the biological sensing signal processing unit.
The communication clock end of the first analog front-end chip, the communication data end of the first analog front-end chip and the ready interrupt end of the first analog front-end chip are jointly formed into a first control signal input end of the biosensing signal processing unit, a first heart rate detection serial signal output end of the biosensing signal processing unit and a third heart rate detection serial signal output end of the biosensing signal processing unit.
And the first emission output end of the first analog front-end chip is a first driving signal output end of the biological sensing signal processing unit.
In one embodiment, the bluetooth module includes a bluetooth chip, a first filter, a first antenna, a second antenna, a ninth capacitor, a tenth capacitor, and an eleventh capacitor.
The first data input/output end of the bluetooth chip, the second data input/output end of the bluetooth chip, the first loudspeaking input end of the bluetooth chip, the second loudspeaking input end of the bluetooth chip, the external decoupling end of the bluetooth chip and the first microphone input end of the bluetooth chip constitute jointly the audio signal input end of the bluetooth module and the audio signal output end of the bluetooth module, the external decoupling end of the bluetooth chip is connected with the first end of the eleventh capacitor, and the second end of the eleventh capacitor is connected with a power ground.
The battery power end of the Bluetooth chip is the battery power input end of the Bluetooth module, the battery power end of the Bluetooth chip is connected with the first end of the ninth capacitor and the battery power, and the second end of the ninth capacitor is connected with the power ground.
The third data input and output end of the Bluetooth chip is the starting signal output end of the Bluetooth module, and the fourth data input and output end of the Bluetooth chip is the switching signal output end of the Bluetooth module.
And a fifth data input/output end of the Bluetooth chip is a heart rate detection communication signal input end of the Bluetooth module.
The radio frequency end of the Bluetooth chip is connected with the first input/output end of the first filter, the second input/output end of the first filter is connected with the second end of the first antenna, the ground end of the first filter is connected with the power ground, the first end of the first antenna is connected with the first end of the second antenna, the second end of the second antenna is connected with the power ground, and the first end of the first antenna and the first end of the second antenna jointly form the wireless receiving signal input end of the Bluetooth module and the wireless transmitting signal output end of the Bluetooth module.
And an audio reference decoupling end of the Bluetooth chip is connected with a first end of the tenth capacitor, and a second end of the tenth capacitor is connected with a power ground. And the ground end of the Bluetooth chip is connected with a power ground.
The utility model provides a second aspect of the embodiment provides a rhythm of heart detects earphone, rhythm of heart detects earphone includes as above-mentioned rhythm of heart detection device.
The embodiment of the utility model provides a detect human heart rate state through a plurality of infrared emission modules and a plurality of infrared receiving module, generate a plurality of rhythm of the heart detected signals, first biosensing signal processing module and second biosensing signal processing module generate a plurality of rhythm of the heart detected serial signal according to a plurality of rhythm of the heart detected signals, control module detects serial signal generation rhythm of the heart detected communication signal according to a plurality of rhythm of the heart, bluetooth module transmits rhythm of the heart detected signal to the terminal through wireless communication mode and shows, synthesize a plurality of rhythm of the heart detected signals and generate rhythm of the heart detected communication signal, the precision of rhythm detection has been improved, adopt a plurality of low-power consumption's power conversion module to control the required working power supply of relevant function module by bluetooth module and control module as required simultaneously, the consumption has been reduced, the energy has been saved; on the other hand, the Bluetooth module transmits the audio signal transmitted by the terminal to the audio signal processing module in a wireless communication mode for playing; the heart rate detection earphone volume of the heart rate detection device is reduced, and the carrying and the use are convenient.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a heart rate detecting device according to an embodiment of the present invention;
fig. 2 is another schematic structural diagram of a heart rate detection device according to an embodiment of the present invention;
fig. 3 is another schematic structural diagram of a heart rate detecting device according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram illustrating an example of a control module of a heart rate detecting device according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram illustrating an example of a motion state sensing module of a heart rate detecting device according to an embodiment of the present invention;
fig. 6 is a schematic circuit diagram illustrating an exemplary biosensing signal processing unit of a heart rate detecting device according to an embodiment of the present invention;
fig. 7 is a schematic circuit diagram illustrating an example of a bluetooth module of a heart rate detection apparatus according to an embodiment of the present invention;
fig. 8 is an exploded view of a heart rate detecting earphone body according to an embodiment of the present invention; wherein 300 is ear rod, 400 is heart rate detection device, 103 is rotation-stop convex strip, 100 is earphone shell;
fig. 9 is a schematic position diagram of a transmitting module and a receiving module of a heart rate detecting device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a schematic structural diagram of a heart rate detecting device according to an embodiment of the present invention shows only the relevant portions of the embodiment for convenience of description, and the details are as follows:
a heart rate detection device comprises a first infrared emission module 15, a second infrared emission module 17, a first infrared receiving module 16, a second infrared receiving module 18, a first biological sensing signal processing module 13, a second biological sensing signal processing module 14, a control module 12, a Bluetooth module 11 and an audio signal processing module 19.
The first infrared emitting module 15 is configured to generate a first test infrared light according to the first driving signal. The second infrared emitting module 17 is configured to generate a second test infrared light according to the second driving signal. The first infrared receiving module 16 is configured to capture first infrared reflected light generated by the first test infrared light reflected by the human body and third infrared reflected light generated by the second test infrared light reflected by the human body, and generate a first heart rate detection signal and a third heart rate detection signal according to the first infrared reflected light and the third infrared reflected light, respectively. The second infrared receiving module 18 is configured to capture second infrared reflected light generated by reflection of the second test infrared light by the human body, and generate a second heart rate detection signal according to the second infrared reflected light. The first biosensing signal processing module 13 is connected to the first infrared emitting module 15 and the first infrared receiving module 16, and is configured to generate a first driving signal according to the first control signal, and generate a first heart rate detection serial signal and a third heart rate detection serial signal according to the first heart rate detection signal and the third heart rate detection signal, respectively. The second biosensing signal processing module 14 is connected to the second infrared emitting module 17 and the second infrared receiving module 18, and is configured to generate a second driving signal according to the second control signal, and generate a second heart rate detection serial signal according to the second heart rate detection signal. The control module 12 is connected to the first biosensing signal processing module 13 and the second biosensing signal processing module 14, and is configured to generate a first control signal and a second control signal according to the start signal, and generate a heart rate detection communication signal according to the first heart rate detection serial signal, the second heart rate detection serial signal, and the third heart rate detection serial signal. The bluetooth module 11 is connected to the control module 12, and is configured to generate a wireless transmission signal according to the heart rate detection communication signal and generate a start signal and an audio signal according to the wireless reception signal. The audio signal processing module 19 is connected to the bluetooth module 11 and configured to play according to the audio signal.
In specific implementation, the first infrared transmitting module 15, the first infrared receiving module 16, the second infrared transmitting module 17 and the second infrared receiving module 18 may be disposed on three side surfaces (a surface, B surface and C surface) of the triangular prism-shaped base plate, specifically, referring to fig. 8 and 9, fig. 8 shows a shape structure of the heart rate detecting device (400), and fig. 9 is a schematic position diagram of the transmitting module and the receiving module of the heart rate detecting device. Optionally, the first infrared transmitting module 15 and the second infrared receiving module 18 are disposed on the first side (surface a), the first infrared receiving module 16 is disposed on the second side (surface B), and the second infrared transmitting module 17 is disposed on the third side (surface C). Because the first infrared transmitting module 15 and the second infrared receiving module 18 are both disposed on the first side surface (a surface) and the distance between the first infrared transmitting module 15 and the second infrared receiving module 18 is relatively small, the infrared light transmitted by the first infrared transmitting module 15 may affect the second infrared receiving module 18 to capture the fourth infrared reflected light, so that the fourth heart rate detection signal generated by the second infrared receiving module 18 can be ignored. Therefore, three heart rate detection signals can be acquired in one detection period by utilizing the reflection of the test infrared light by the tissues in the ear canal of the human body and the first infrared transmitting module 15, the first infrared receiving module 16, the second infrared transmitting module 17 and the second infrared receiving module 18. Wherein, first infrared emission module 15 and second infrared emission module 17 do not place in same side as far as possible for human tissue's heart rate detected signal in the ear canal is gathered in detection that can be diversified, improves the precision that heart rate detected.
When detection is needed, the terminal sends a wireless receiving signal to the bluetooth module 11 in a wireless communication mode, the bluetooth module 11 generates a starting signal according to the wireless receiving signal and transmits the starting signal to the control module 12, the control module 12 generates a first control signal and a second control signal according to the starting signal, the first biosensing signal processing module 13 generates a first driving signal according to the first control signal, the second biosensing signal processing module 14 generates a second driving signal according to the second control signal, and therefore the first infrared emitting module 15 and the second infrared emitting module 17 are controlled to alternately emit first testing infrared light and second testing infrared light. The first infrared receiving module 16 captures a first infrared reflected light generated by the reflection (including at least one reflection) of the first test infrared light by the tissue in the ear canal of the human body and generates a first heart rate detection signal according to the first infrared reflected light. The second infrared receiving module 18 captures fourth infrared reflected light generated by the first test infrared light reflected by tissues in the ear canal of the human body (including at least one reflection) under the influence of the first test infrared light, and a fourth heart rate detection signal generated according to the fourth infrared reflected light is very weak and can be ignored. The first infrared receiving module 16 captures third infrared reflected light generated by reflecting (including at least one reflection) the second test infrared light by tissues in the ear canal of the human body, and generates a third heart rate detection signal according to the third infrared reflected light; the second infrared receiving module 18 captures second infrared reflected light generated by reflecting the second test infrared light by tissues in the ear canal of the human body, and generates a second heart rate detection signal according to the second infrared reflected light. The first biosensing signal processing module 13 generates a first heart rate detection serial signal and a third heart rate detection serial signal according to the first heart rate detection signal and the third heart rate detection signal respectively; the second biosensing signal processing module 14 generates a second heart rate detection serial signal according to the second heart rate detection signal. The control module 12 generates a heart rate detection communication signal based on the first heart rate detection serial signal, the second heart rate detection serial signal, and the third heart rate detection serial signal. The realization can acquire a plurality of rhythm of the heart detected signal in a control cycle, and then detects communication signal according to a plurality of rhythm of the heart detected signal generation rhythm of the heart, and wherein, rhythm of the heart detected communication signal carries rhythm of the heart data, avoids the inaccurate rhythm of the heart detected error that brings of single rhythm of the heart detected signal, has improved the precision that rhythm of the heart detected.
Referring to fig. 2, in one embodiment, the heart rate detecting apparatus further includes a motion status sensing module 20.
The motion state sensing module 20 is connected to the control module 12, and is configured to detect a motion state of a human body according to the interrupt wake-up signal to generate a motion state signal. The control module 12 is specifically configured to generate an interrupt wakeup signal, and generate a heart rate detection communication signal according to the motion state signal and the first heart rate detection serial signal, the second heart rate detection serial signal, and the third heart rate detection serial signal.
In a specific implementation, a motion sensing module 20 is added to detect a motion state of a human body during motion to generate a motion state signal, where the motion state signal includes running state information such as speed, position, motion direction, and motion acceleration. The control module 12 integrates the plurality of heart rate detection serial signals and the motion state signal to generate a heart rate detection communication signal, so that the heart rate detection accuracy is further improved, and the interference on the heart rate detection caused by stray light, body fluid and relative motion between the infrared emission module and the infrared receiving module and between the infrared emission module and the skin in the motion process is reduced.
Referring to fig. 3, in one embodiment, the heart rate detecting apparatus further includes a first power conversion module 101, a second power conversion module 102, and a third power conversion module 103.
The first power conversion module 101 is connected to the bluetooth module 11, and is configured to generate a battery power according to an external power to supply power to the bluetooth module 11. The second power conversion module 102 is connected to the first power conversion module 101, the bluetooth module 11, and the control module 12, and is configured to convert a battery power according to the switch signal to generate a first power to supply power to the control module 12. The third power conversion module 103 is connected to the first power conversion module 101, the first biosensing signal processing module 13, the second biosensing signal processing module 14, the first infrared emission module 15, the motion state sensing module 20, the second infrared emission module 17, and the control module 12, and is configured to convert a battery power according to an enable signal to generate a second power to supply power to the first biosensing signal processing module 13, the second biosensing signal processing module 14, the motion state sensing module 20, the first infrared emission module 15, and the second infrared emission module 17.
The bluetooth module 11 is further configured to generate a switch signal according to a key input. The control module 12 is further configured to generate an enable signal according to the enable signal.
In specific implementation, the input key is arranged on the bluetooth module 11, the second power conversion module 102 is controlled to power on the control module 12, the control module 12 performs heart rate detection as required, and the control module 11 generates an enable signal to control the third power conversion module 103 to power on the first biosensing signal processing module 13, the second biosensing signal processing module 14, the motion state sensing module 20, the first infrared emission module 15 and the second infrared emission module 17, and the plurality of power modules are controlled to power on the corresponding functional modules only when the corresponding functional modules need to work, so that the energy consumption waste caused by the fact that the functional modules are still in a power-on state when the functional modules do not need to work is avoided, energy is saved, and the reliability and the practicability of the heart rate detection device are improved.
In specific implementation, the third power conversion module 103 includes a first low dropout regulator and a second low dropout regulator, the first low dropout regulator is connected to the first infrared emission module 15, the second infrared emission module 17 and the control module 12, and the second low dropout regulator is connected to the first biosensing signal processing module 13, the second biosensing signal processing module 14, the motion state sensing module 20 and the control module 12. According to the detection control requirement, the control module 12 controls the first low-voltage-difference linear voltage stabilizer to generate a second power supply with first precision to supply power to the infrared emission module, and controls the second low-voltage linear voltage stabilizer to generate a second power supply with second precision to supply power to the biological sensing signal processing module, the infrared receiving module and the motion state sensing module, so that the power consumption requirement of each module can be met, the power consumption power can be fully reduced, and the heart rate detection precision is improved.
Referring to fig. 4, in one embodiment, the control module 12 includes a microprocessor U1, a first resistor R1, a second resistor R2, and a third capacitor C3.
A first data input/output PA1 of the microprocessor U1 is an enable signal input of the control module 12.
A second data input/output PA2 of the microprocessor U1 is a heart rate detection communication signal output of the control module 12.
The third data input/output terminal PA3 of the microprocessor U1 is the interrupt wake-up signal output terminal of the control module 12.
The fourth data input/output terminal PA4 of the microprocessor U1 and the fifth data input/output terminal PA5 of the microprocessor U1 together form a motion state signal input terminal of the control module 12.
The sixth data input/output terminal PA6 of the microprocessor U1, the seventh data input/output terminal PA7 of the microprocessor U1, and the eighth data input/output terminal PA8 of the microprocessor U1 are commonly configured as a first control signal output terminal of the control module 12, a first heart rate detection serial signal input terminal of the control module 12, and a third heart rate detection serial signal input terminal of the control module 12.
The ninth data input/output terminal PA9 of the microprocessor U1 is an enable signal output terminal of the control module 12.
The tenth data input/output terminal PA10 of the microprocessor U1, the eleventh data input/output terminal PA11 of the microprocessor U1, and the twelfth data input/output terminal PA12 of the microprocessor U1 are commonly configured as the second control signal output terminal of the control module 12 and the heart rate detection serial signal input terminal of the control module 12.
The power supply terminal VDD of microprocessor U1 is the first power supply input terminal of control module 12.
The power monitoring start terminal PDR _ ON of the microprocessor U1 is connected with a first terminal of a first resistor R1, a second terminal of a first resistor R1 is connected with a first power VDD _ MCU, and a ground terminal VSS of the microprocessor U1 is connected with a power ground GND.
The battery power terminal VBAT of the microprocessor U1 is connected to a first terminal of a second resistor R2, and a second terminal of the second resistor R2 is a battery power input terminal of the control module 12.
The voltage-stabilizing terminal VCAPI of the microprocessor U1 is connected to the first terminal of the third capacitor C3, and the second terminal of the third capacitor C3 is connected to the power ground GND.
In specific implementation, the microprocessor is a central processing unit composed of one or a few large-scale integrated circuits, can complete operations such as instruction fetching, instruction execution, instruction operation, information exchange with an external memory and a logic component, and is an operation control part of the microcomputer, so that the microprocessor can meet the use function requirements of relevant logic operation, analysis judgment, control and the like.
A power source terminal VDD of the microprocessor U1 is connected to the first terminal of the fourth capacitor C4, the first terminal of the fifth capacitor C5, and the first power source VDD _ MCU, and the second terminal of the fourth capacitor C4 and the second terminal of the fifth capacitor C5 are connected to the power ground GND. The reference power source terminal VDDA/VREF + of the microprocessor U1 is connected to the first terminal of the sixth capacitor C6, the first terminal of the seventh capacitor C7, and the first power VDD _ MCU, and the second terminal of the sixth capacitor C6 and the second terminal of the seventh capacitor C7 are connected to the power ground GND.
Through the parallel connection of the fourth capacitor C4 and the fifth capacitor C5 between the power supply end VDD of the microprocessor U1 and the first power supply VDD _ MCU, and the parallel connection of the sixth capacitor C6 and the seventh capacitor C7 between the reference power supply end VDDA/VREF + of the microprocessor U1 and the first power supply VDD _ MCU, the filtering and noise reduction processing is carried out on the first power supply VDD _ MCU, the stability of power supply for the microprocessor U1 is improved, and the control precision and the logic calculation and analysis judgment precision of the microprocessor U1 are further improved.
Referring to fig. 5, in one embodiment, the motion state sensing module 20 includes a first capacitor C1, a second capacitor C2, and an acceleration sensor U2.
The power supply end VDD of the acceleration sensor U2 and the data input/output power supply end VDD _ IO of the acceleration sensor U2 are connected to the first end of the first capacitor C1 and the first end of the second capacitor C2, the second end of the first capacitor C1 and the second end of the second capacitor C2 are connected to the power ground GND, and the first end of the second capacitor C2 is the second power input end of the motion state sensing module 20.
The ground terminal GND of the acceleration sensor U2 and the reset terminal RES of the acceleration sensor U2 are connected to the power supply ground GND.
The communication serial clock terminal SCL/SPC of the acceleration sensor U2 and the communication serial data terminal SDA of the acceleration sensor U2 are jointly configured as a motion state signal output terminal of the motion state sensing module 20.
The serial data output end SD0 of the acceleration sensor U2 and the serial enable end CS of the acceleration sensor U2 are connected to the second power supply VDD _ MCU _ IO.
The interrupt end INT1 of the acceleration sensor U2 is an interrupt wake-up signal input end of the motion state sensing module 20.
In specific implementation, when heart rate detection is needed, the microprocessor U1 controls the third power conversion module 103 to power on the acceleration sensor U2, and the acceleration sensor U2 inputs a motion state signal to the microprocessor U1 according to an interrupt wake-up signal generated by the microprocessor U1, so that the acceleration sensor U2 is prevented from being in a power-on state when detection is not needed, energy consumption is reduced, and meanwhile, the acceleration sensor U2 is prevented from transmitting a running state signal to the microprocessor U1 all the time to occupy the memory and energy consumption of the microprocessor.
In one embodiment, the first infrared emission module 15 comprises a first infrared emission tube. The second infrared emission module 17 includes a second infrared emission tube. The first infrared receiving module 16 includes a first infrared receiving tube. The second infrared receiving module 18 includes a second infrared receiving tube.
In specific implementation, the first infrared transmitting tube, the first infrared receiving tube, the second infrared transmitting tube and the second infrared receiving tube may be disposed on three side surfaces (a surface, B surface and C surface) of the triangular prism-shaped base plate, specifically referring to the shape structure of the heart rate detecting device 400 shown in fig. 8 and the position schematic diagrams of the transmitting module and the receiving module of the heart rate detecting device shown in fig. 9. Optionally, the first infrared transmitting tube and the second infrared receiving tube are disposed on the first side surface (surface a), the first infrared receiving tube is disposed on the second side surface (surface B), and the second infrared transmitting tube is disposed on the third side surface (surface C). Because first infrared transmitting tube and second infrared receiving tube all place in first side (A face) and the distance between the two is less, lead to the infrared light of first infrared transmitting tube transmission can influence the catch of second infrared receiving tube to infrared reverberation for the fourth heart rate detection signal that second infrared receiving tube produced can be ignored. Therefore, three heart rate detection signals can be acquired in one detection period by utilizing the reflection (including at least one reflection) of the human tissue in the auditory canal to the test infrared light and the first infrared transmitting tube, the first infrared receiving tube, the second infrared transmitting tube and the second infrared receiving tube. The infrared receiving tube receives a returned flowing state signal of blood through reflection of the infrared light to the blood vessel, so that the infrared receiving tube generates a heart rate detection signal according to infrared reflection light, the heart rate detection signal measured by the infrared light can reflect the change characteristics of deeper subcutaneous tissues, and high-precision and low-error heart rate detection data can be obtained.
Referring to fig. 6, in one embodiment, the first biosensing signal processing module 13 and the second biosensing signal processing module 14 each include a biosensing signal processing unit 134, and the biosensing signal processing unit 134 includes a first analog front-end chip U3.
The cathode connection terminal INP of the first analog front-end chip U3 and the anode connection terminal INM of the first analog front-end chip U3 are commonly configured as a first heart rate detection signal input terminal of the bio-sensor signal processing unit 134 and a third heart rate detection signal input terminal of the bio-sensor signal processing unit 134.
The input/output supply terminal IO _ SUP of the first analog front-end chip U3 is a second power supply input terminal of the biosensing signal processing unit 134.
The communication clock terminal I2C _ CLK of the first analog front end chip U3, the communication data terminal I2C _ DAT of the first analog front end chip U3, and the ready interrupt terminal ADC _ RAY of the first analog front end chip U3 collectively constitute a first control signal input terminal of the biosensing signal processing unit 134, a first heart rate detection serial signal output terminal of the biosensing signal processing unit 134, and a third heart rate detection serial signal output terminal of the biosensing signal processing unit 134.
The first transmission output terminal TX1 of the first analog front-end chip U3 is a first driving signal output terminal of the bio sensor signal processing unit 134.
In a specific implementation, the transmitting supply terminal TX _ SUP of the first analog front-end chip U3 is connected to the first infrared transmitting tube, and the receiving supply terminal RX _ SUP of the first analog front-end chip U3 is connected to the first infrared receiving tube. An input/output supply terminal IO _ SUP of the first analog front-end chip U3 is connected to the second power supply VDD _ MCU _ IO and a first terminal of the eighth capacitor C8, and a second terminal of the eighth capacitor C8 is connected to the power ground GND.
Referring to fig. 6, in one embodiment, the bluetooth module 11 includes a bluetooth chip U4, a first filter F1, a first antenna L1, a second antenna L2, a ninth capacitor C9, a tenth capacitor C10, and an eleventh capacitor C11.
The first data input/output end PIO1 of the bluetooth chip U4, the second data input/output end PIO2 of the bluetooth chip U4, the first speaker input end SPK _1N of the bluetooth chip U4, the second speaker input end SPK _1P of the bluetooth chip U4, the external decoupling end BIAS of the bluetooth chip U4, and the first microphone input end MIC _ LN of the bluetooth chip U4 are commonly configured as an audio signal input end of the bluetooth module 11 and an audio signal output end of the bluetooth module 11, the external decoupling end BIAS of the bluetooth chip U4 is connected to a first end of an eleventh capacitor C11, and a second end of the eleventh capacitor C11 is connected to the power ground GND.
The battery power supply terminal VBAT of the bluetooth chip U4 is the battery power supply input terminal of the bluetooth module 11, the battery power supply terminal VBAT of the bluetooth chip U4 is connected to the first terminal of the ninth capacitor C9 and the battery power supply VBAT, and the second terminal of the ninth capacitor C9 is connected to the power ground GND.
The third data input/output port PIO3 of the bluetooth chip U4 is a start signal output port of the bluetooth module 11, and the fourth data input/output port PIO4 of the bluetooth chip U4 is a switch signal output port of the bluetooth module 11.
The fifth data input/output terminal PIO5 of the bluetooth chip U4 is the heart rate detection communication signal input terminal of the bluetooth module 11.
The radio frequency terminal RF of the bluetooth chip U4 is connected to the first input/output terminal of the first filter F1, the second input/output terminal of the first filter F1 is connected to the second terminal of the first antenna L1, the ground terminal of the first filter F1 is connected to the power ground GND, the first terminal of the first antenna L1 is connected to the first terminal of the second antenna L2, the second terminal of the second antenna L2 is connected to the power ground GND, and the first terminal of the first antenna L1 and the first terminal of the second antenna L2 are jointly configured as the wireless receiving signal input terminal of the bluetooth module 11 and the wireless transmitting signal output terminal of the bluetooth module 11.
An audio reference decoupling terminal AU _ REF of the bluetooth chip U4 is connected to a first terminal of a tenth capacitor C10, and a second terminal of the tenth capacitor C10 is connected to a power ground GND. The ground terminal VSS of the bluetooth chip U4 is connected to the power ground GND.
The working principle of the present invention will be explained below with reference to fig. 4 to 7:
the Bluetooth chip U4 carries out wireless communication with the terminal through an antenna ANT, the radio frequency end RF of the Bluetooth chip U4 receives wireless receiving signals, generates starting signals and audio signals according to the wireless receiving signals, transmits the audio signals to the audio signal processing module 19 to be played, and transmits the starting signals to the microprocessor U1 through a first data input and output end PA1 of the microprocessor U1. The microprocessor U1 generates an enable signal according to the start signal and outputs the enable signal to the third power conversion module 103 through the ninth data input/output terminal PA9 of the microprocessor U1, so that the third power conversion module 103 generates the second power VDD _ MCU _ IO according to the battery power VBAT to supply power to the corresponding functional module. The microprocessor U1 further generates a first control signal and a second control signal according to the start signal, and transmits the first control signal to the first analog front-end chip U3 included in the first biosensing signal processing module 13 through the sixth data input/output terminal PA6 of the microprocessor U1, the seventh data input/output terminal PA7 of the microprocessor U1, and the eighth data input/output terminal PA8 of the microprocessor U1, and transmits the second control signal to the first analog front-end chip U3 included in the second biosensing signal processing module 14 through the tenth data input/output terminal PA10 of the microprocessor U1, the eleventh data input/output terminal PA11 of the microprocessor U1, and the twelfth data input/output terminal PA12 of the microprocessor U1. The first analog front-end chip U3 included in the first biosensing signal processing module 13 generates a first driving signal according to the first control signal, and outputs the first driving signal to the first infrared emission module 15 through the first emission output terminal TX1 of the first analog front-end chip U3 included in the first biosensing signal processing module 13, and the first infrared emission module 15 generates the first test infrared light according to the second power supply VDD _ MCU _ IO and the first driving signal. The first infrared receiving module 16 captures first infrared reflected light generated by the first test infrared light reflected by the human body, and generates a first heart rate detection signal according to the first infrared reflected light. The first heart rate detection signal is inputted into the first analog front-end chip U3 included in the first biosensing signal processing module 13 through the cathode connection terminal INP of the first analog front-end chip U3 included in the first biosensing signal processing module 13 and the anode connection terminal INM of the first analog front-end chip U3 included in the first biosensing signal processing module 13, the first analog front-end chip U3 included in the first biosensing signal processing module 13 generates a first heart rate detection serial signal from the first heart rate detection signal, and is outputted through the communication clock terminal I2C _ CLK of the first analog front-end chip U3 included in the first biosensing signal processing module 13, the communication data terminal I2C _ DAT of the first analog front-end chip U3 included in the first biosensing signal processing module 13, and the interrupt terminal ADC _ RAY of the first analog front-end chip U3 included in the first biosensing signal processing module 13, and then input into the microprocessor U1 via the sixth data input/output terminal PA6 of the microprocessor U1, the seventh data input/output terminal PA7 of the microprocessor U1, and the eighth data input/output terminal PA8 of the microprocessor U1. Similarly, the generation principle of the second heart rate detection serial signal and the third heart rate detection serial signal is the same as that of the first heart rate detection signal, and is not described herein again. The microprocessor U1 outputs a heart rate detection communication signal generated according to the first heart rate detection serial signal, the second heart rate detection serial signal and the third heart rate detection serial signal through a second data input and output end PA2 of the microprocessor U1, and then the heart rate detection communication signal is input into the Bluetooth chip U4 through a fifth data input and output end PIO5 of the Bluetooth chip U4, a wireless sending signal is generated by the Bluetooth chip U4 according to the heart rate detection communication signal, and the heart rate detection communication signal is transmitted to the terminal to display heart rate data of a user in real time.
The embodiment of the utility model provides a detect human heart rate state through a plurality of infrared transmitting tubes and a plurality of infrared receiving tube, generate a plurality of rhythm of the heart detected signals, the analog front end chip detects serial signal according to a plurality of rhythm of the heart detected signal generation, microprocessor detects serial signal generation rhythm of the heart detected communication signal according to a plurality of rhythm of the heart, the bluetooth chip sends rhythm of the heart detected signal for the terminal through wireless communication mode and shows, synthesize a plurality of rhythm of the heart detected signal generation rhythm of the heart detected communication signal, the precision that the rhythm of the heart detected is improved, the power conversion module who adopts a plurality of low-power consumptions simultaneously generates the required working power supply of relevant functional module according to external test start signal control by the bluetooth chip according to key input control and microprocessor, the consumption is reduced, the energy has been saved.
Referring to fig. 8, a second aspect of the embodiments of the present invention provides a heart rate detecting earphone, which includes the heart rate detecting device as described above.
The heart rate detection earphone of this embodiment can satisfy the general listening music of earphone and wireless audio communication simultaneously can carry out timely accurate detection to people's heart rate state to with terminal (for example cell-phone) wireless communication, its energy consumption is low, has saved the energy, and small portable and use.
Reference throughout the specification to "various embodiments," "in an embodiment," "one embodiment," or "an embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in various embodiments," "in some embodiments," "in one embodiment," or "in an embodiment," or the like, in places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Thus, a particular feature, structure, or characteristic illustrated or described in connection with one embodiment may be combined, in whole or in part, with features, structures, or characteristics of one or more other embodiments without presuming that such combination is not an illogical or functional limitation. Any directional references (e.g., plus, minus, upper, lower, upward, downward, left, right, leftward, rightward, top, bottom, above …, below …, vertical, horizontal, clockwise, and counterclockwise) are used for identification purposes to aid the reader's understanding of the present disclosure, and do not create limitations, particularly as to the position, orientation, or use of the embodiments.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A heart rate detection device, characterized in that the heart rate detection device comprises:
the first infrared emission module is used for generating first test infrared light according to the first driving signal;
the second infrared emission module is used for generating second test infrared light according to the second driving signal;
the first infrared receiving module is used for capturing first infrared reflected light generated by the first test infrared light through the reflection of a human body and third infrared reflected light generated by the second test infrared light through the reflection of the human body, and generating a first heart rate detection signal and a third heart rate detection signal according to the first infrared reflected light and the third infrared reflected light respectively;
the second infrared receiving module is used for capturing second infrared reflected light generated by the reflection of the second test infrared light through a human body and generating a second heart rate detection signal according to the second infrared reflected light;
the first biological sensing signal processing module is connected with the first infrared transmitting module and the first infrared receiving module, and is used for generating the first driving signal according to a first control signal and generating a first heart rate detection serial signal and a third heart rate detection serial signal according to the first heart rate detection signal and the third heart rate detection signal respectively;
the second biological sensing signal processing module is connected with the second infrared transmitting module and the second infrared receiving module and used for generating a second driving signal according to a second control signal and generating a second heart rate detection serial signal according to the second heart rate detection signal;
the control module is connected with the first biological sensing signal processing module and the second biological sensing signal processing module, and is used for generating the first control signal and the second control signal according to a starting signal and generating a heart rate detection communication signal according to the first heart rate detection serial signal, the second heart rate detection serial signal and the third heart rate detection serial signal;
the Bluetooth module is connected with the control module and used for generating a wireless sending signal according to the heart rate detection communication signal and generating the starting signal and an audio signal according to a wireless receiving signal;
and the audio signal processing module is connected with the Bluetooth module and used for playing according to the audio signal.
2. The heart rate detection device of claim 1, further comprising:
the motion state sensing module is connected with the control module and used for detecting the motion state of the human body according to the interrupt awakening signal so as to generate a motion state signal;
the control module is specifically configured to generate an interrupt wakeup signal, and generate a heart rate detection communication signal according to the motion state signal and the first heart rate detection serial signal, the second heart rate detection serial signal, and the third heart rate detection serial signal.
3. The heart rate detection device of claim 2, further comprising:
the first power supply conversion module is connected with the Bluetooth module and used for generating a battery power supply according to an external power supply so as to supply power to the Bluetooth module;
the second power supply conversion module is connected with the first power supply conversion module, the Bluetooth module and the control module and is used for converting the battery power supply according to a switching signal to generate a first power supply to supply power to the control module;
a third power conversion module connected to the first power conversion module, the first biosensing signal processing module, the second biosensing signal processing module, the first infrared emission module, the motion state sensing module, the second infrared emission module, and the control module, and configured to convert the battery power according to an enable signal to generate a second power to supply power to the first biosensing signal processing module, the second biosensing signal processing module, the motion state sensing module, the first infrared emission module, and the second infrared emission module;
the Bluetooth module is also used for generating the switch signal according to key input; the control module generates the enable signal according to the start signal.
4. The heart rate detection device of claim 1, 2 or 3, wherein the control module comprises a microprocessor, a first resistor, a second resistor, and a third capacitor;
a first data input/output end of the microprocessor is a starting signal input end of the control module;
a second data input/output end of the microprocessor is a heart rate detection communication signal output end of the control module;
the third data input and output end of the microprocessor is an interrupt wake-up signal output end of the control module;
a fourth data input and output end of the microprocessor and a fifth data input and output end of the microprocessor are jointly formed into a motion state signal input end of the control module;
a sixth data input/output end of the microprocessor, a seventh data input/output end of the microprocessor and an eighth data input/output end of the microprocessor are jointly formed into a first control signal output end of the control module, a first heart rate detection serial signal input end of the control module and a third heart rate detection serial signal input end of the control module;
a ninth data input/output end of the microprocessor is an enable signal output end of the control module;
a tenth data input and output end of the microprocessor, an eleventh data input and output end of the microprocessor and a twelfth data input and output end of the microprocessor are jointly formed into a second control signal output end of the control module;
the power supply end of the microprocessor is a first power supply input end of the control module;
a power supply monitoring starting end of the microprocessor is connected with a first end of the first resistor, a second end of the first resistor is connected with the first power supply, and a ground end of the microprocessor is connected with a power supply ground;
a battery power supply end of the microprocessor is connected with a first end of the second resistor, and a second end of the second resistor is a battery power supply input end of the control module;
and the voltage stabilizing end of the microprocessor is connected with the first end of the third capacitor, and the second end of the third capacitor is connected with a power ground.
5. The heart rate detection device of claim 2, wherein the motion state sensing module comprises a first capacitor, a second capacitor, and an acceleration sensor;
the power end of the acceleration sensor and the data input/output power supply end of the acceleration sensor are connected with the first end of the first capacitor and the first end of the second capacitor, the second end of the first capacitor and the second end of the second capacitor are connected with a power ground, and the first end of the second capacitor is a second power input end of the motion state sensing module;
the ground end of the acceleration sensor and the reset end of the acceleration sensor are connected with a power supply ground;
the communication serial clock end of the acceleration sensor and the communication serial data end of the acceleration sensor are jointly formed into a motion state signal output end of the motion state sensing module;
the serial data output end of the acceleration sensor and the serial row enable end of the acceleration sensor are connected with the second power supply;
and the interrupt end of the acceleration sensor is an interrupt awakening signal input end of the motion state sensing module.
6. The heart rate detection device of claim 1, wherein the first infrared emission module comprises a first infrared emission tube; the second infrared emission module comprises a second infrared emission tube; the first infrared receiving module comprises a first infrared receiving tube; the second infrared receiving module comprises a second infrared receiving tube.
7. The heart rate detection device of claim 1, wherein the first biosensing signal processing module and the second biosensing signal processing module each comprise a biosensing signal processing unit, the biosensing signal processing unit comprising a first analog front-end chip;
the cathode connecting end of the first analog front-end chip and the anode connecting end of the first analog front-end chip are jointly formed into a first heart rate detection signal input end of the biosensing signal processing unit and a third heart rate detection signal input end of the biosensing signal processing unit;
the input/output supply end of the first analog front-end chip is a second power supply input end of the biological sensing signal processing unit;
the communication clock end of the first analog front-end chip, the communication data end of the first analog front-end chip and the ready interrupt end of the first analog front-end chip are jointly formed into a first control signal input end of the biosensing signal processing unit, a first heart rate detection serial signal output end of the biosensing signal processing unit and a third heart rate detection serial signal output end of the biosensing signal processing unit;
and the first emission output end of the first analog front-end chip is a first driving signal output end of the biological sensing signal processing unit.
8. The heart rate detection device of claim 1, wherein the bluetooth module comprises a bluetooth chip, a first filter, a first antenna, a second antenna, a ninth capacitor, a tenth capacitor, and an eleventh capacitor;
a first data input/output end of the bluetooth chip, a second data input/output end of the bluetooth chip, a first loudspeaking input end of the bluetooth chip, a second loudspeaking input end of the bluetooth chip, an external decoupling end of the bluetooth chip, and a first microphone input end of the bluetooth chip are jointly configured as an audio signal input end of the bluetooth module and an audio signal output end of the bluetooth module, the external decoupling end of the bluetooth chip is connected with a first end of the eleventh capacitor, and a second end of the eleventh capacitor is connected with a power ground;
the battery power end of the Bluetooth chip is a battery power input end of the Bluetooth module, the battery power end of the Bluetooth chip is connected with the first end of the ninth capacitor and the battery power, and the second end of the ninth capacitor is connected with a power ground;
a third data input/output end of the Bluetooth chip is a starting signal output end of the Bluetooth module, and a fourth data input/output end of the Bluetooth chip is a switching signal output end of the Bluetooth module;
a fifth data input/output end of the Bluetooth chip is a heart rate detection communication signal input end of the Bluetooth module;
the radio frequency end of the Bluetooth chip is connected with the first input/output end of the first filter, the second input/output end of the first filter is connected with the second end of the first antenna, the ground end of the first filter is connected with the power ground, the first end of the first antenna is connected with the first end of the second antenna, the second end of the second antenna is connected with the power ground, and the first end of the first antenna and the first end of the second antenna jointly form a wireless receiving signal input end of the Bluetooth module and a wireless transmitting signal output end of the Bluetooth module;
an audio reference decoupling end of the Bluetooth chip is connected with a first end of the tenth capacitor, and a second end of the tenth capacitor is connected with a power ground;
and the ground end of the Bluetooth chip is connected with a power ground.
9. A heart rate detecting headset characterized in that it comprises a heart rate detecting device according to any of the claims 1 to 8.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112137607A (en) * | 2019-06-26 | 2020-12-29 | 深圳市冠旭电子股份有限公司 | Heart rate detection device and heart rate detection earphone |
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| CN112137607A (en) * | 2019-06-26 | 2020-12-29 | 深圳市冠旭电子股份有限公司 | Heart rate detection device and heart rate detection earphone |
| CN112137607B (en) * | 2019-06-26 | 2024-07-02 | 深圳市冠旭电子股份有限公司 | Heart rate detection device and heart rate detection earphone |
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