Bone conduction earphone

Abstract

The utility model discloses a bone conduction earphone, including earphone main body, it contains left ear earphone, right ear earphone, left ear earphone is connected to hang ear ware and first heart rate monitoring device, the latter connects battery module, right ear earphone connects second heart rate monitoring device, the latter is connected main control board module, and battery module and main control board module are connected through connecting silica gel. The main control board module is built -in micro control unit, and is wiredly connected with each function module, can handle physiological signal, drive bone conduction vibrator, realize wireless transmission and data storage. The device solves the problem of existing equipment structure ambiguity, detail missing, improves practicality and implementability, and is suitable for health monitoring and audio playing scene.

Description

Technical Field

[0001] This utility model provides an earphone, and particularly relates to a bone conduction earphone. Background Technology

[0002] Bone conduction headphones, as a new type of audio device, use bone conduction oscillators to convert audio signals into mechanical vibrations, which are then transmitted through the skull to transmit sound waves without blocking the ear canal. They are widely used in scenarios such as sports and hearing protection. At the same time, some products integrate physiological monitoring functions, which can collect data such as heart rate and blood oxygen to assist users in health management.

[0003] While existing bone conduction headphones attempt to integrate physiological monitoring modules, they suffer from significant technical deficiencies. Firstly, the hardware configuration of core components for heart rate and blood oxygen monitoring, such as the heart rate monitor, is not clearly defined. The coordination between the blood oxygen measurement light source and sensor, as well as the signal processing flow, are lacking, making it difficult to guarantee the accuracy and stability of physiological data acquisition. Secondly, the circuit connection design between various functional modules is vague. The communication protocol and signal transmission path between the motherboard module and the bone conduction oscillator and Bluetooth module are unclear. The key circuitry for the Bluetooth module driving the bone conduction oscillator is not explained, and the internal circuit layout of the connecting silicone is not detailed. This prevents technicians from accurately replicating and optimizing the design, limiting product functionality and performance improvement, and failing to meet the actual production and user demands for device stability and functionality. Utility Model Content

[0004] In order to solve the above problems, this application provides a bone conduction headphone, which solves the technical difficulties of existing devices being unable to be implemented due to unclear structure, unclear module connection, and lack of functional implementation details.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a bone conduction earphone, including an earphone body, the earphone body having a left earphone and a right earphone, the upper end of the left earphone being connected to an ear hook, and the rear end being connected to a first heart rate monitoring device, the rear end of the first heart rate monitoring device having a battery module, the rear end of the right earphone having a second heart rate monitoring device, the rear end of the second heart rate monitoring device having a main control board module, and a connecting silicone sealant between the battery module and the main control board module; the main control board module has a built-in microcontroller unit, a signal acquisition and processing circuit, and a control output circuit, and is respectively connected to the first heart rate monitoring device, the second heart rate monitoring device, the bone conduction vibrator, a Bluetooth module, and a memory card via wired electrical connections.

[0006] Preferably, the main control board module has a silicone shell, and the silicone shell has an internal mounting cavity. A control motherboard is fixed at the left end of the mounting cavity. The control motherboard integrates a microcontroller unit, a signal acquisition and processing circuit, a control output circuit, and an audio amplification circuit. A charging port is provided at the right end of the control motherboard, and the charging port extends out of the silicone shell.

[0007] Preferably, the first heart rate monitoring device and the second heart rate monitoring device have the same structure, both including a bone conduction heart rate monitor and a sensor assembly. The bone conduction heart rate monitor uses a microphone sensor to collect heartbeat sound signals. The sensor assembly integrates an infrared lamp, a hidden light emitter, a green light lamp, and a photoelectric receiving sensor. The photoelectric receiving sensor is used to receive light signals reflected by human tissue and convert them into electrical signals. The electrical signals are transmitted through wires to the signal acquisition and processing circuit of the main control board module for filtering, amplification, and AD conversion.

[0008] Preferably, the right earphone has an earphone shell, and the left side of the earphone shell has a mounting hole. A bone conduction vibrator is fixed inside the mounting hole. The bone conduction vibrator is connected to the audio amplification circuit of the main control board module through a drive line and receives the amplified audio drive signal to generate mechanical vibration. A silicone protective sleeve is connected to the front end of the mounting hole, and a switch slot is provided at the rear end of the earphone shell. A control switch is installed in the switch slot.

[0009] Preferably, the control motherboard has a Bluetooth module on the right side. The Bluetooth module is connected to the microcontroller unit via the SPI communication protocol. It has a built-in DAC module and wireless communication circuit, which is used to receive wireless audio signals from external devices and convert them into analog signals for transmission to the audio amplification circuit. At the same time, it receives physiological data output by the microcontroller unit and sends it to external devices.

[0010] Preferably, the control motherboard is equipped with a storage card, which is connected to the microcontroller unit via an SDIO interface and is used to store processed physiological monitoring data and audio data.

[0011] Preferably, the connecting silicone is wrapped with a silicone protective sleeve, and a data cable and a memory metal are inserted inside the silicone protective sleeve. The data cable is arranged in a spiral shape along one side of the memory metal, and its two ends are connected to the power interface and signal interface of the battery module and the main control board module, respectively. The memory metal is used to maintain the shape of the connecting silicone.

[0012] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages compared with the prior art:

[0013] This bone conduction headphone addresses the problem in existing bone conduction devices where details regarding physiological monitoring functions are lacking (e.g., unclear hardware structure of heart rate monitors, signal acquisition circuits, coordination between blood oxygen monitoring light sources and sensors, signal processing, circuit connections between modules, and design details of the Bluetooth module driving the bone conduction vibrator, making direct implementation impossible for technicians). By incorporating left and right earpieces into the headphone body, and configuring first and second heart rate monitoring devices, this headphone utilizes a sensor assembly integrating specific light sources (infrared, invisible light, green light) and photoelectric receiving sensors. Combined with a main control board module containing a built-in microcontroller, signal acquisition and processing circuits, and control output circuits, it achieves physiological signal acquisition, processing, and transmission. Furthermore, it clearly defines the connection between the bone conduction vibrator and the main control board module's audio amplification circuit. The Bluetooth module, through the SPI communication protocol and in conjunction with a built-in DAC module, enables wireless audio transmission and physiological data transmission. The connection silicone contains a rationally arranged data cable and shape memory metal, thus clearly defining the structure, connection, and collaborative operation of each component. This solves the problem of existing technologies being unable to implement due to lack of details, enabling the device to stably achieve bone conduction sound generation, heart rate and blood oxygen monitoring, and data processing and transmission functions.

[0014] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of a bone conduction headphone according to the present invention;

[0016] Figure 2 This is a timing diagram of physiological signal acquisition and processing for a bone conduction headphone according to this utility model;

[0017] Figure 3 This is a flowchart illustrating the audio signal transmission and bone conduction oscillator driving process of a bone conduction headphone according to this utility model.

[0018] As shown in the figure:

[0019] 1. Earphone body; 11. Left earphone; 12. Right earphone; 2. First heart rate monitoring device; 3. Battery module; 4. Connecting silicone; 5. Main control board module; 6. Second heart rate monitoring device. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] like Figure 1 As shown, a bone conduction headphone includes a headphone body 1, which has a left earphone 11 and a right earphone 12. The upper end of the left earphone 11 is connected to an ear hook, and the rear end is connected to a first heart rate monitoring device 2. A battery module 3 is located at the rear end of the first heart rate monitoring device 2. A second heart rate monitoring device 6 is located at the rear end of the right earphone 12. A main control board module 5 is located at the rear end of the second heart rate monitoring device 6. A connecting silicone 4 is provided between the battery module 3 and the main control board module 5. The main control board module 5 has a built-in microcontroller unit, a signal acquisition and processing circuit, and a control output circuit, and is connected to the first heart rate monitoring device 2, the second heart rate monitoring device 6, the bone conduction vibrator, and the Bluetooth module, respectively. The memory card is connected via wired electrical connection. The main control board module 5 has a silicone shell with an internal mounting cavity. The control motherboard is fixed at the left end of the mounting cavity. The control motherboard integrates a microcontroller unit, signal acquisition and processing circuit, control output circuit, and audio amplification circuit. The right end of the control motherboard has a charging port that extends out of the silicone shell. The connecting silicone 4 is wrapped with a silicone protective sleeve. Data cables and memory metal are threaded through the silicone protective sleeve. The data cables are arranged in a spiral shape along one side of the memory metal, and their two ends are connected to the power interface and signal interface of the battery module 3 and the main control board module 5, respectively. The memory metal is used to maintain the shape of the connecting silicone 4.

[0024] In this implementation scheme, the first heart rate monitoring device 2 and the second heart rate monitoring device 6 have the same structure and are connected to the left earphone 11 and the right earphone 12 respectively. The bone conduction vibrator is fixed in the mounting hole of the right earphone 12. The bone conduction vibrator is connected to the audio amplification circuit of the main control board module 5 through the drive line. The Bluetooth module on the right side of the control board is connected to the microcontroller unit through the SPI communication protocol. The memory card is connected to the microcontroller unit through the SDIO interface. From the implementation points, the connection relationship of each component is clear. For example, the data line spirally arranged inside the silicone 4 ensures stable power and signal transmission. The memory metal maintains the shape and improves wearing stability. The circuit integrated in the main control board module 5 enables orderly signal processing and audio driving. In terms of innovation, the dual heart rate monitoring devices, together with the sensor components, improve the accuracy of physiological data acquisition. The Bluetooth module has a built-in DAC module to realize efficient conversion from wireless audio to vibrator driving. The collaboration of each structure solves the problems of unclear structure and difficult function implementation of existing devices. It not only ensures clear bone conduction sound, but also makes physiological monitoring stable and reliable, and facilitates implementation and optimization by technicians.

[0025] like Figure 2 and Figure 3 As shown, the first heart rate monitoring device 2 and the second heart rate monitoring device 6 have the same structure, both including a bone conduction heart rate monitor and a sensor assembly. The bone conduction heart rate monitor uses a microphone sensor to collect heartbeat sound signals. The sensor assembly integrates an infrared lamp, a hidden light emitter, a green light, and a photoelectric receiving sensor. The photoelectric receiving sensor is used to receive light signals reflected by human tissue and convert them into electrical signals. This electrical signal is transmitted through wires to the signal acquisition and processing circuit of the main control board module 5 for filtering, amplification, and AD conversion. The right earphone 12 has an earphone shell, and the left side of the earphone shell has a mounting hole. A bone conduction vibrator is fixed inside the mounting hole. The bone conduction vibrator is connected to the main control board module 5 through a drive wire. The audio amplifier circuit is connected to receive the amplified audio drive signal to generate mechanical vibration. A silicone protective sleeve is connected to the front end of the mounting hole. A switch slot is provided at the rear end of the earphone shell, in which a control switch is installed. A Bluetooth module is provided on the right side of the control motherboard. The Bluetooth module is connected to the microcontroller unit via the SPI communication protocol. It has a built-in DAC module and wireless communication circuit, which is used to receive wireless audio signals from external devices and convert them into analog signals for transmission to the audio amplifier circuit. At the same time, it receives physiological data output by the microcontroller unit and sends it to external devices. A memory card is provided on the control motherboard. The memory card is connected to the microcontroller unit via the SDIO interface and is used to store the processed physiological monitoring data and audio data.

[0026] In this implementation scheme, the microphone sensor of the bone conduction heart rate monitor works in conjunction with the infrared lamp and invisible light emitter of the sensor assembly to collect physiological signals from different dimensions. These signals are then transmitted via wires to the main control board module 5 for processing, improving the comprehensiveness of the data. The mounting hole of the right earphone 12 secures the bone conduction vibrator, and the silicone protective cover provides protection. The control switch facilitates operation. The specific connection and built-in module of the Bluetooth module ensure smooth wireless transmission and audio conversion, while the memory card enables local data storage. These designs clarify the implementation path of core functions such as monitoring, sound generation, and control, solve the problem of missing details in the prior art, and enhance the practicality and operability of the device.

[0027] When using this bone conduction headphone, it needs to be paired with an external terminal device with Bluetooth functionality, such as a smartphone or smartwatch, to achieve wireless data interaction and audio source provision. It also needs to be powered by an existing lithium battery charging adapter through the charging port to power the battery module 3. The silicone protective cover and connecting silicone 4 can be made of medical-grade liquid silicone, the memory metal is made of nickel-titanium alloy, the headphone shell and silicone shell are made of ABS engineering plastic, the microphone sensor is a MEMS microphone, and the photoelectric receiving sensor is a PIN photodiode. This ensures that the device is compatible with existing technology equipment and can operate stably in practical applications.

[0028] Specifically, to make the solution more complete, during installation, a combination of clips and screws is used to fix the bone conduction vibrator to the mounting hole 12 of the right earphone. The silicone protective cover is fitted onto the front end of the mounting hole with an interference fit. The control switch is embedded in the switch slot and reinforced with hot melt glue. Before use, the Bluetooth module of this device needs to be connected to external devices such as smartphones through existing Bluetooth pairing technology. During operation, press and hold the control switch for 3 seconds to turn on the device, and press briefly to switch modes. The collected physiological data is processed by the main control board module 5 and then synchronized to the mobile health APP in real time via Bluetooth, and also stored in the memory card according to the timestamp. When charging, connect one end of the existing Type-C data cable to the charging port and the other end to the mobile phone charger or computer USB port. The device will automatically power off when the battery is full. In this way, a complete usage process is formed by using existing installation technology, Bluetooth interaction technology and charging specifications.

[0029] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A bone conduction headphone, comprising a headphone body (1), characterized in that: The main body of the earphone (1) is provided with a left earphone (11) and a right earphone (12). The upper end of the left earphone (11) is connected to an ear hook, and the rear end is connected to a first heart rate monitoring device (2). The rear end of the first heart rate monitoring device (2) is provided with a battery module (3). The rear end of the right earphone (12) is provided with a second heart rate monitoring device (6). The rear end of the second heart rate monitoring device (6) is provided with a main control board module (5). A connecting silicone (4) is provided between the battery module (3) and the main control board module (5). The main control board module (5) has a built-in microcontroller unit, a signal acquisition and processing circuit and a control output circuit, and is connected to the first heart rate monitoring device (2), the second heart rate monitoring device (6), the bone conduction vibrator, the Bluetooth module and the memory card via wired electrical connection.

2. The bone conduction headphones according to claim 1, characterized in that: The main control board module (5) is provided with a silicone shell, and an installation cavity is provided inside the silicone shell. A control motherboard is fixed at the left end of the installation cavity. The control motherboard integrates a micro control unit, a signal acquisition and processing circuit, a control output circuit and an audio amplification circuit. A charging port is provided at the right end of the control motherboard, and the charging port extends out of the silicone shell.

3. A bone conduction headphone according to claim 1, characterized in that: The first heart rate monitoring device (2) and the second heart rate monitoring device (6) have the same structure, both including a bone conduction heart rate monitor and a sensor assembly. The bone conduction heart rate monitor uses a microphone sensor to collect heartbeat sound signals. The sensor assembly integrates an infrared lamp, an invisible light emitter, a green light lamp, and a photoelectric receiving sensor. The photoelectric receiving sensor is used to receive light signals reflected by human tissue and convert them into electrical signals. The electrical signals are transmitted through wires to the signal acquisition and processing circuit of the main control board module (5) for filtering, amplification, and AD conversion processing.

4. A bone conduction headphone according to claim 1, characterized in that: The right earphone (12) is provided with an earphone shell. The left side of the earphone shell is provided with a mounting hole. A bone conduction vibrator is fixed inside the mounting hole. The bone conduction vibrator is connected to the audio amplification circuit of the main control board module (5) through a drive line and receives the amplified audio drive signal to generate mechanical vibration. A silicone protective sleeve is connected to the front end of the mounting hole. A switch slot is provided at the rear end of the earphone shell. A control switch is installed in the switch slot.

5. A bone conduction headphone according to claim 2, characterized in that: The right side of the control motherboard is equipped with a Bluetooth module. The Bluetooth module is connected to the microcontroller unit via the SPI communication protocol. It has a built-in DAC module and wireless communication circuit, which is used to receive wireless audio signals from external devices and convert them into analog signals for transmission to the audio amplification circuit. At the same time, it receives physiological data output by the microcontroller unit and sends it to external devices.

6. A bone conduction headphone according to claim 2, characterized in that: The control motherboard is equipped with a storage card, which is connected to the microcontroller unit via an SDIO interface and is used to store processed physiological monitoring data and audio data.

7. A bone conduction headphone according to claim 1, characterized in that: The connecting silicone (4) is wrapped with a silicone protective sleeve. A data cable and a memory metal are inserted inside the silicone protective sleeve. The data cable is arranged in a spiral shape along one side of the memory metal. Its two ends are connected to the power interface and signal interface of the battery module (3) and the main control board module (5), respectively. The memory metal is used to maintain the shape of the connecting silicone (4).

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