CN211089899U - Bone conduction device and communication system - Google Patents

Abstract

The utility model provides a bone conduction device and communication system. Bone conduction device includes support, bone conduction microphone, first bone conduction speaker and second bone conduction speaker, first bone conduction speaker reaches bone conduction microphone locates the one end of support, second bone conduction speaker locates the other end of support, bone conduction microphone includes adapter and audio amplifier, the adapter is used for gathering sound signal and will sound signal turns into the signal of telecommunication, the audio amplifier electricity is connected the adapter, audio amplifier is used for enlargiing the signal of telecommunication of adapter. The utility model provides a pair of bone conduction device can improve sound transmission efficiency effectively.

Description

Bone conduction device and communication system

Technical Field

The utility model relates to an electronic information technical field, concretely relates to bone conduction device and communication system.

Background

The bone conduction technology is to convert sound into mechanical vibration of different frequencies, transmit sound waves through the skull of a person, the bone labyrinth, inner ear lymph fluid transmission, the spiral organ, the auditory nerve and the auditory center, can realize clear sound reduction in a noisy environment, and does not need to insert the earphone into the earhole, can effectively receive the sound emitted by a human body or conduct the sound to the human body, however, the device of the bone conduction device is aged, the structure is deformed or under a motion scene, a microphone and a loudspeaker of the bone conduction device can not be always attached to the human body, and at the moment, the sound transmission efficiency of the bone conduction device is greatly reduced. Therefore, how to improve the sound transmission efficiency of the bone conduction device becomes a technical problem to be solved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a can improve sound transmission efficiency's bone conduction device and communication system.

The utility model provides a pair of bone conduction device, bone conduction device includes support, bone conduction microphone, first bone conduction speaker and second bone conduction speaker, first bone conduction speaker reaches bone conduction microphone locates the one end of support, second bone conduction speaker locates the other end of support, bone conduction microphone includes adapter and audio amplifier, the adapter is used for gathering sound signal and will sound signal turns into the signal of telecommunication, the audio amplifier electricity is connected the adapter, audio amplifier is used for enlargiing the signal of telecommunication of adapter.

In an embodiment, the bracket includes a first contact portion, and the bone conduction device further includes a first pressure sensor disposed on the first contact portion, the first pressure sensor being configured to sense a pressure value applied to the first contact portion.

In an embodiment, the bone conduction device further includes a first controller, the first controller is electrically connected to the first pressure sensor and the audio amplifier, and the first controller is configured to adjust the amplification factor of the audio amplifier for the electrical signal according to a pressure value of the first pressure sensor.

In an embodiment, the bone conduction device further includes a first switch and a second controller, the first switch is connected between the sound pickup and the audio amplifier, the second controller is electrically connected to the first pressure sensor and the first switch, and the second controller is configured to control the first switch to be turned off or turned on according to a pressure value of the first pressure sensor.

In an embodiment, the sound pickup includes a first connection end and a second connection end, the audio amplifier includes a first resistor, a second resistor, a transistor, and a capacitor, a base terminal of the transistor is connected to the first connection end of the sound pickup, the first resistor is connected between the first connection end of the sound pickup and a collector terminal of the transistor, the second resistor is connected in parallel to the capacitor, and the second resistor and the capacitor are connected between the second connection end of the sound pickup and an emitter terminal of the transistor.

In an embodiment, the bracket further comprises a second contact portion, the first bone conduction speaker comprises a first vibration portion contacting the second contact portion to emit a vibration signal through the second contact portion; the bone conduction device further comprises a second pressure sensor and a third controller, the second pressure sensor is arranged on the second contact part and used for sensing the pressure value received by the second contact part, and the third controller is used for adjusting the size of the vibration signal sent by the first vibration part according to the pressure value of the second pressure sensor.

In an embodiment, the bracket further comprises a third contact portion, and the second bone conduction speaker comprises a second vibration portion contacting the third contact portion to emit a vibration signal through the third contact portion and the third contact surface; the bone conduction device further comprises a third pressure sensor and a fourth controller, the third pressure sensor is arranged on the third contact part and used for sensing the pressure value received by the third contact part, and the fourth controller is used for adjusting the vibration signal sent by the second vibration part according to the pressure value of the third pressure sensor.

In one embodiment, the bone conduction device further comprises a bone conduction controller and a second switch, the bone conduction controller is electrically connected with the second bone conduction speaker, and the bone conduction controller is connected with the first bone conduction speaker or the bone conduction microphone through the second switch; when the bone conduction device is applied to a call scene, the second switch conducts the bone conduction controller and the bone conduction microphone; when the bone conduction device receives a media audio signal, the second switch conducts the bone conduction controller and the first bone conduction loudspeaker.

In one embodiment, the bone conduction device further includes a bluetooth module and a power supply, the bluetooth module is connected in parallel with the bone conduction controller, and the power supply is connected in parallel with the bluetooth module.

On the other hand, the utility model also provides a communication system, communication system includes electronic equipment and bone conduction device, bone conduction device with communication connection is established to electronic equipment.

The bone conduction device is provided with the bone conduction loudspeaker and the bone conduction microphone, so that the bone conduction device can collect and emit sound signals in a bone conduction mode, the bone conduction device transmits the sound signals in the bone conduction mode without inserting the bone conduction loudspeaker and the bone conduction microphone into an ear hole, and then the ear of a user is released, air blockage in the ear can be effectively prevented, sweat secreted by the ear is difficult to volatilize, bacteria can be bred for a long time, and the problems of eardrum pathological changes, hearing damage and the like can be solved; and, set up the audio amplifier on the sound pick-up of the bone conduction microphone, this audio amplifier can amplify the sound signal that the sound pick-up gathers, thus improve the intensity of the sound signal that the bone conduction microphone gathers, and then improve the sensitivity of bone conduction microphone, set up first bone conduction speaker and second bone conduction speaker at the both sides of bone conduction device, so that the human body can receive the stereo sound signal, in order to improve the sensitivity of bone conduction speaker, so improve the efficiency of the sound signal of bone conduction device.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described 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 that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a bone conduction device according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of an interior of a bone conduction device according to an embodiment of the present invention.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Fig. 4 is a control flow chart of a bone conduction device according to an embodiment of the present invention.

Fig. 5 is a circuit diagram of a sound pickup and an audio amplifier according to an embodiment of the present invention.

Fig. 6 is an enlarged schematic view of a portion B in fig. 2.

Fig. 7 is a schematic diagram of a hardware circuit principle of a bone conduction device in a call scene according to an embodiment of the present invention.

Fig. 8 is a schematic diagram of a hardware circuit principle of a bone conduction device in a scene of listening to media audio according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The embodiments of the present invention can be combined with each other appropriately.

The embodiment of the utility model provides a pair of bone conduction device. The bone conduction device includes, but is not limited to, bone conduction earphones, bone conduction glasses, bone conduction hairpins, bone conduction hearing aids, and other bone conduction wearing devices. The utility model discloses use bone conduction earphone as the example to carry out specific explanation.

Referring to fig. 1 and 2, the bone conduction device 100 includes a frame 1, a bone conduction microphone 2, a first bone conduction speaker 3, and a second bone conduction speaker 4. Specifically, the support 1 may be an earphone support, and two ends of the support 1 are respectively clamped or hung on the left and right ears. The first bone conduction speaker 3 and the bone conduction microphone 2 are disposed at one end of the bracket 1. The second bone conduction speaker 4 is provided at the other end of the bracket 1. The first bone conduction speaker 3 and the second bone conduction speaker 4 may be symmetrically disposed, so that a human body can receive symmetric sound signals at both sides.

Since the first bone conduction speaker 3, the second bone conduction speaker 4 and the bone conduction microphone 2 are all bone conduction transmission methods to transmit sound signals, the first bone conduction speaker 3, the second bone conduction speaker 4 and the bone conduction microphone 2 are all attached to the skin of the human body to transmit sound signals. Specifically, the first and second bone conduction speakers 3 and 4 may be attached to the skin of a bone near the ear. The bone conduction microphone 2 may be attached to the skin near the skull or larynx. When the bone conduction microphone 2 is attached to the skin near the larynx, the extendable member may be connected between the bone conduction microphone 2 and the first bone conduction speaker 3, and the extendable member may be extended so that the bone conduction microphone 2 may be attached to the skin near the larynx. So, need not to inject bone conduction speaker 3, 4 and bone conduction microphone 2 into the ear hole, and then released user's ear, can prevent effectively that the interior air blocking of ear, excrete that sweat is difficult to volatilize, can breed the bacterium for a long time, lead to eardrum pathological change, hearing impaired scheduling problem.

Referring to fig. 3, the bone conduction microphone 2 includes a microphone 21 and an audio amplifier 22. The sound pickup 21 is used for collecting sound signals and converting the sound signals into electric signals. The audio amplifier 22 is electrically connected to the microphone 21. The audio amplifier 22 is used for amplifying the electric signal of the sound pickup 21.

Specifically, the sound pickup 21 is a device for collecting the sound of the field environment and transmitting the sound to the back-end equipment. The microphone 21 includes a microphone. The microphone is an energy conversion device for converting a sound signal into an electric signal. The sound pickup 21 may be divided into a digital sound pickup 21 and an analog sound pickup 21, and the digital sound pickup 21 is a sound sensing apparatus that converts an analog audio signal into a digital signal through a digital signal processing system and performs corresponding digital signal processing. The analog microphone 21 simply amplifies the sound collected by the microphone by using a general analog circuit. In summary, the sound pickup 21 in the present embodiment can collect a sound signal (also referred to as a vibration signal) generated by the human body, and convert the sound signal into a digital electrical signal or an analog electrical signal.

Specifically, the audio amplifier 22 includes, but is not limited to, an audio amplification circuit.

It is understood that the present embodiment only lists the number of bone conduction speakers and bone conduction microphones 2, and of course, in other embodiments, the number of bone conduction speakers may be greater than two, and the number of bone conduction microphones 2 may be more than two. When the number of the bone conduction microphones 2 is plural, the plural bone conduction microphones 2 are respectively attached to different bone regions with conduction sound waves to enhance the sound signals collected by the human body. It is understood that the present embodiment takes the bone conduction device 100 as an example for collecting human body sound waves. Of course, in other embodiments, the bone conduction device 100 may also collect sound signals of living beings other than the human body.

The bone conduction device 100 is provided with the bone conduction loudspeaker and the bone conduction microphone 2, so that the bone conduction device 100 can collect and emit sound signals in a bone conduction mode, the bone conduction device 100 transmits the sound signals in the bone conduction mode without inserting the bone conduction loudspeaker and the bone conduction microphone 2 into ear holes, the ears of a user are released, air blockage in the ears can be effectively prevented, sweat secreted by the ears is difficult to volatilize, bacteria can be bred for a long time, and the problems of eardrum pathological changes, hearing damage and the like can be solved; furthermore, the sound pickup 21 of the bone conduction microphone 2 is provided with the audio amplifier 22, the audio amplifier 22 can amplify the sound signal collected by the sound pickup 21, so that the intensity of the sound signal collected by the bone conduction microphone 2 is improved, and the sensitivity of the bone conduction microphone 2 is improved, and the first bone conduction speaker 3 and the second bone conduction speaker 4 are symmetrically arranged on two sides of the bone conduction device 100, so that a human body can receive the symmetrical sound signals on the two sides, and the sensitivity of the bone conduction speaker is improved, and the efficiency of the bone conduction device 100 for conducting the sound signal is improved.

In one embodiment, referring to fig. 3, the bracket 1 includes a first contact portion 111. The bone conduction device 100 further comprises a first pressure sensor 51. The first pressure sensor 51 is disposed on the first contact portion 111, and the first pressure sensor 51 is configured to sense a pressure value received by the first contact portion 111. Specifically, the first contact portion 111 may be a part of the housing of the cradle 1, and the first contact portion 111 protrudes with respect to the other housing parts of the cradle 1 so as to contact the skin of the human body. In other embodiments, the first contact portion 111 may be provided on the bone conduction microphone 2. The first contact portion 111 has a first contact surface 11 and a first attachment surface 12 that are opposite to each other. The first contact surface 11 is adapted to be attached to the skin of a human body. The sound pickup 21 contacts the first abutting surface 12 to collect a sound signal through the first abutting surface 12 and the first contact surface 11. The first pressure sensor 51 is provided on the first contact surface 11. The first pressure sensor 51 is used for sensing the pressure value received by the first contact surface 11.

Specifically, referring to fig. 1, the bone conduction microphone 2 and the first bone conduction speaker 3 are disposed at the first end 101 of the bracket 1. The bone conduction microphone 2 is closer to the end of the first end 101 of the housing 1 than the first bone conduction speaker 3. The second bone conduction speaker 4 is provided at the second end 102 of the bracket 1. The first contact surface 11 and the first abutment surface 12 are respectively an outer surface and an inner surface of the housing of the first end 101. The sound pickup 21 of the bone conduction microphone 2 contacts the first attachment surface 12. Further, the sound pickup 21 of the bone conduction microphone 2 is attached to the first attachment surface 12. When the first contact surface 11 is attached to the skin of the human body, the sound signal generated by the human body is transmitted to the first contact surface 11 through the bone and transmitted to the sound pickup 21 through the first attachment surface 12, so as to improve the efficiency of the sound pickup 21 in collecting the sound signal.

Specifically, the first pressure sensor 51 is a device that converts a pressure signal into an electrical signal. In this embodiment, the first pressure sensor 51 may be a micro pressure sensor, and specifically, the first pressure sensor 51 may be a patch pressure sensor, so that the first pressure sensor 51 is attached to the first contact surface 11. In other words, the first pressure sensor 51 contacts the human skin for detecting the pressure value between the human skin and the first contact surface 11. It can be understood that, when the pressure value detected by the first pressure sensor 51 is larger (for example, larger than the preset pressure value), it indicates that the first contact surface 11 is closely attached to the skin of the human body, and at this time, the distance between the first contact surface 11 and the bone of the human body is small, so that the sound signal conducted through the bone can be more conducted to the first contact surface 11, and further more conducted to the sound pickup 21, and the efficiency of the sound pickup 21 for receiving the sound signal is improved.

The first pressure sensor 51 is arranged on the first contact surface 11 of the bracket 1 to detect the pressure value between the skin of the human body and the first contact surface 11, so as to represent the efficiency of the sound pickup 21 for receiving sound signals.

In one embodiment, referring to fig. 3, the bone conduction device 100 further includes a first controller 52. The first controller 52 is electrically connected to the first pressure sensor 51 and the audio amplifier 22. The first controller 52 is configured to adjust the amplification factor of the electrical signal by the audio amplifier 22 according to the pressure value of the first pressure sensor 51.

It will be appreciated that the amplification of the electrical signal received by the microphone 21 by the audio amplifier 22 may be adjusted so that the audio amplifier 22 can adjust the sensitivity of the bone conduction microphone 2 to a suitable range.

Specifically, the first controller 52 may be a control chip. The first pressure sensor 51 transmits the detected pressure value to the first controller 52, and the first controller 52 determines the pressure between the first contact surface 11 or the first contact part 111 and the skin of the human body according to the pressure value detected by the first pressure sensor 51, and adjusts the amplification factor of the audio amplifier 22 for the electrical signal received by the sound pickup 21 according to the pressure value, so that the electrical signal received by the sound pickup 21 can be amplified to a suitable factor, and the bone conduction microphone 2 has a suitable sensitivity.

Generally, the first contact surface 11 is in contact with the skin of the human body after the human body wears the bone conduction device 100, but as the housing 1 of the bone conduction device 100 ages, or the wearing of the human body changes, or when the wearing of the bone conduction device 100 moves, a gap may occur between the first contact surface 11 and the skin of the human body. In other words, the first contact surface 11 cannot always be closely attached to the skin of the human body in some scenes, and then a gap may occur between the first contact surface 11 and the skin of the human body, and when a gap occurs between the first contact surface 11 and the skin of the human body, the sound signal conducted from the bone of the human body may be lost in the gap, so that the efficiency of the sound signal collected by the sound pickup 21 is reduced.

Based on the above problem, the utility model discloses a set up first pressure sensor 51, first pressure sensor 51 can be wearing bone conduction device 100 and detect the pressure between first contact surface 11 and the human skin all the time. When the pressure value detected by the first pressure sensor 51 is smaller, it indicates that the first contact surface 11 is not tightly attached to the skin of the human body, and at this time, the first controller 52 controls the audio amplifier 22 to increase the amplification factor of the electrical signal collected by the sound pickup 21, so that the sound pickup 21 acquires the audio signal with the required intensity, and the efficiency of the sound signal collected by the bone conduction microphone 2 is improved. In other words, the first controller 52 obtains the pressure value of the first pressure sensor 51 to monitor the first contact surface 11 and the skin of the human body in real time, so as to adjust the amplification factor of the audio amplifier 22 for the electrical signal collected by the sound pickup 21 in real time, and further adjust the intensity of the sound signal collected by the sound pickup 21, thereby improving the efficiency of the sound signal collected by the bone conduction microphone 2.

In another embodiment, referring to fig. 4, the bone conduction device 100 further includes a first switch 53 and a second controller 54. The first switch 53 is connected between the microphone 21 and the audio amplifier 22. The second controller 54 is electrically connected to the first pressure sensor 51 and the first switch 53. The second controller 54 is configured to control the first switch 53 to be turned off or on according to the pressure value of the first pressure sensor 51.

Specifically, the second controller 54 may be a control chip. The second controller 54, the pickup 21, the first switch 53, and the audio amplifier 22 form a closed loop. When the pressure value detected by the first pressure sensor 51 is smaller than the preset value, it indicates that the first contact surface 11 is not attached to the skin of the human body, at this time, the second controller 54 controls the first switch 53 to be turned on, so that the connection between the sound pickup 21 and the audio amplifier 22 is turned on, and the audio amplifier 22 amplifies the electrical signal collected by the sound pickup 21, so that the intensity of the sound signal collected by the sound pickup 21 reaches the target intensity; when the pressure value detected by the first pressure sensor 51 is greater than or equal to the preset value, it indicates that the first contact surface 11 is attached to the skin of the human body, and at this time, the second controller 54 controls the first switch 53 to be turned off, so that the connection between the sound pickup 21 and the audio amplifier 22 is broken, and the electric signal collected by the sound pickup 21 does not need to be amplified.

In an embodiment, referring to fig. 5, in combination with any one of the above embodiments, the sound pickup 21 includes a first connection end 211 and a second connection end 212. The audio amplifier 22 includes a first resistor 221, a second resistor 222, a transistor 223 and a capacitor 224. The transistor 223 includes an emitter terminal 225, a collector terminal 226, and a base terminal 227. The base terminal 227 of the transistor 223 is connected to the first connection terminal 211 of the microphone 21. The first resistor 221 is connected between the first connection terminal 211 of the microphone 21 and the collector terminal 226 of the transistor 223. The second resistor 222 is connected in parallel with the capacitor 224. The second resistor 222 and the capacitor 224 are connected between the second connection terminal 212 of the microphone 21 and the emitter terminal 225 of the transistor 223.

Specifically, the second resistor 222 and the capacitor 224 mainly increase the emitter voltage of the transistor 223. The amplification factor of the audio amplifier 22 can be changed by changing the resistance value of the second resistor 222. The first resistor 221 is mainly used for adapting the operating voltage of the microphone 21, and is also a load resistor of the microphone 21 and a voltage negative feedback bias resistor of the transistor 223. By adjusting the power supply voltage, the resistance of the first resistor 221, the resistance of the second resistor 222, and the capacitance 224 of the capacitor 224, the audio amplifier 22 is in a current amplification working state, and further amplifies the current received by the sound pickup 21, thereby achieving the effect of enhancing the sensitivity of the bone conduction microphone 2.

In one embodiment, referring to fig. 3, the bracket 1 further includes a second contact portion 112. The first bone conduction speaker 3 includes a first vibrating portion 31. The first vibration part 31 contacts the second contact part 112 to transmit a vibration signal through the second contact part 112. The bone conduction device 100 further includes a second pressure sensor 55 and a third controller 56. The second pressure sensor 55 is provided on the second contact portion 112. The second pressure sensor 55 is used for sensing the pressure value received by the second contact portion 112. The third controller 56 is configured to adjust the magnitude of the vibration signal emitted by the first vibration unit 31 according to the magnitude of the pressure value of the second pressure sensor 55. In particular, the second contact portion 112 may be a portion of the housing of the cradle 1, and the second contact portion 112 protrudes with respect to the other housing portions of the cradle 1 so as to contact the skin of the human body. In other embodiments, the second contact portion 112 may be provided on the first bone conduction speaker 3. The second contact portion 112 includes a second contact surface 13 and a second attachment surface 14 that are opposite to each other. The second contact surface 13 is adapted to be attached to the skin of a person. The second pressure sensor 55 is provided on the second contact surface 13. The second pressure sensor 55 is used for sensing the pressure value received by the second contact surface 13.

In particular, the second contact surface 13 and the second abutment surface 14 are respectively an outer surface and an inner surface of the housing of the first end 101. The second contact surface 13 is disposed at an interval from the first contact surface 11, and the second contact surface 14 is disposed at an interval from the first contact surface 12. The first vibrating portion 31 of the first bone conduction speaker 3 contacts the second contact surface 14. Further, the first vibrating portion 31 is bonded to the second bonding surface 14. When the second contact surface 13 is attached to the skin of the human body, the sound signal emitted from the first vibration portion 31 is transmitted to the human body through the second attachment surface 14 and the second contact surface 13, so as to improve the transmission efficiency of the sound signal from the first bone conduction speaker 3 to the human body.

Specifically, the structure of the second pressure sensor 55 may be the same as that of the first pressure sensor 51. The third controller 56 electrically connects the second pressure sensor 55 and the first vibrating portion 31. When the pressure value detected by the second pressure sensor 55 is smaller, it indicates that the second contact surface 13 is not in close contact with the skin of the human body. At this time, the third controller 56 controls the vibration signal emitted from the first vibration part 31 to increase the vibration signal received by the human body, and further increases the audio signal received by the human body to ensure the sound effect of the bone conduction device 100. Specifically, the first vibration part 31 includes a diaphragm (not shown), a coil (not shown) connected to the diaphragm, and a magnet (not shown) magnetically coupled to the coil. The third controller 56 is electrically connected to the coil. The third controller 56 controls the current flowing through the coil to increase, and the vibration amplitude of the diaphragm driven by the coil increases, so that the vibration signal emitted by the first vibration part 31 increases. Although the present invention does not illustrate the diaphragm, the coil, and the magnet, those skilled in the art can know the specific structure of the first vibration part 31 according to the prior art. When the pressure value detected by the second pressure sensor 55 is larger, which indicates that the second contact surface 13 is tightly attached to the skin of the human body, the third controller 56 controls the vibration signal emitted by the first vibration part 31 to be reduced, so as to save electric energy and ensure the sound effect of the bone conduction device 100.

In one embodiment, referring to fig. 6, the bracket 1 further includes a third contact portion 113. The second bone conduction speaker 4 includes a second vibrating portion 41. The second vibration part 41 contacts the third contact part 113 to transmit a vibration signal through the third contact part 113. The bone conduction device 100 further includes a third pressure sensor 57 and a fourth controller 58. The third pressure sensor 57 is provided on the third contact portion 113. The third pressure sensor 57 is used for sensing the pressure value received by the third contact portion 113. The fourth controller 58 is configured to adjust the magnitude of the vibration signal emitted by the second vibration unit 41 according to the magnitude of the pressure value of the third pressure sensor 57. Specifically, the third contact portion 113 may be a portion of the housing of the cradle 1, and the third contact portion 113 protrudes with respect to the other housing portions of the cradle 1 so as to contact the skin of the human body. In another embodiment, the third contact portion 113 may be provided on the second bone conduction speaker 4. The third contacting portion 113 may include a third contacting surface 15 and a third attaching surface 16 opposite to each other. The third contact surface 15 is intended to be applied to the skin of a human being. The third pressure sensor 57 is provided on the third contact surface 15. The third pressure sensor 57 is used for sensing the pressure value received by the third contact surface 15.

Specifically, the third contact surface 15 and the third fitting surface 16 are respectively an outer surface and an inner surface of the housing of the second end 102. The second vibration part 41 of the second bone conduction speaker 4 contacts the third fitting surface 16. Further, the second vibration part 41 is bonded to the third bonding surface 16. When the third contact surface 15 is attached to the skin of the human body, the sound signal emitted from the second vibration portion 41 is transmitted to the human body through the third attachment surface 16 and the third contact surface 15, so as to improve the transmission efficiency of the sound signal from the second bone conduction speaker 4 to the human body.

Specifically, the structure of the third pressure sensor 57 may be the same as that of the second pressure sensor 55. The fourth controller 58 electrically connects the third pressure sensor 57 and the second vibrating portion 41. When the pressure value detected by the third pressure sensor 57 is smaller, it indicates that the third contact surface 15 is not tightly attached to the skin of the human body, and the fourth controller 58 controls the vibration signal emitted by the second vibration part 41 to increase, so as to increase the vibration signal received by the human body, and further increase the audio signal received by the human body, so as to ensure the sound effect of the bone conduction device 100. Specifically, the second vibration part 41 includes a diaphragm, a coil connected to the diaphragm, and a magnet magnetically coupled to the coil, and the fourth controller 58 is electrically connected to the coil. The fourth controller 58 controls the current flowing through the coil to increase, and the vibration amplitude of the diaphragm driven by the coil increases, so that the vibration signal emitted by the second vibration part 41 increases. Although the present invention does not illustrate the diaphragm, the coil, and the magnet, those skilled in the art can know the specific structure of the second vibration part 41 according to the prior art. When the pressure value detected by the third pressure sensor 57 is larger, it indicates that the third contact surface 15 is tightly attached to the skin of the human body, and the fourth controller 58 controls the vibration signal emitted by the second vibration part 41 to be reduced, so as to save electric energy and ensure the sound effect of the bone conduction device 100.

In one embodiment, referring to fig. 2, fig. 7 and fig. 8, the bone conduction device 100 further includes a bone conduction controller 6 and a second switch 7. The bone conduction controller 6 is arranged in the bracket 1. The bone conduction controller 6 is electrically connected to the second bone conduction speaker 4. The bone conduction controller 6 is connected with the first bone conduction speaker 3 or the bone conduction microphone 2 through the second switch 7; when the bone conduction device 100 is applied to a call scene, the second switch 7 conducts the bone conduction controller 6 and the bone conduction microphone 2. When the bone conduction device 100 receives a media audio signal, the second switch 7 connects the bone conduction controller 6 and the first bone conduction speaker 3.

Further, referring to fig. 7 and 8, the second bone conduction speaker 4, the bone conduction controller 6 and the bone conduction microphone 2 form a closed loop; alternatively, the second bone conduction speaker 4 forms a closed loop with the bone conduction controller 6 and the first bone conduction speaker 3. The bone conduction device 100 further comprises a bluetooth module 8 and a power supply 9 arranged in the bracket 1. The bluetooth module 8 is connected in parallel with the bone conduction controller 6. The power supply 9 is connected in parallel with the bluetooth module 8. The power supply 9 may be a lithium ion battery or may be a power supply circuit having a power supply function.

When the bone conduction device 100 is used in a call scene, the bone conduction controller 6 controls the second switch 7 to turn on the second bone conduction speaker 4 and the bone conduction microphone 2, and realizes bluetooth connection with a mobile phone or other electronic equipment through the bluetooth module 8, and simultaneously turns off the first bone conduction speaker 3. In this scenario, the bluetooth module 8 transmits the received voice information to the human body through the second bone conduction speaker 4 to realize audio playing; the bone conduction microphone 2 collects human voice information and sends the human voice information to a mobile phone or other electronic equipment through the Bluetooth module 8, so that a call sending function is realized.

When the bone conduction device 100 is used for listening to media audio, the bone conduction controller 6 controls the second switch 7 to switch on the first bone conduction speaker 3 and the second bone conduction speaker 4, and in this mode, audio information received by the bluetooth module 8 is simultaneously sent to a human body through the first bone conduction speaker 3 and the second bone conduction speaker 4, so that a three-dimensional listening effect is realized.

In one embodiment, the bone conduction controller 6 may provide at least one key. At least one key corresponds to a call scene or a listening media audio scene. When the bone conduction device 100 detects that the corresponding key is pressed, the second switch 7 is switched to conduct different loops, so as to enter a conversation scene or listen to a media audio scene. In another embodiment, the bone conduction device 100 may detect which scene is a call scene, a media audio scene, or the like through the bluetooth module 8, and switch the second switch 7 to conduct different loops according to the detection result, so as to enter the call scene or listen to the media audio scene.

Therefore, in the voice call process, the bone conduction microphone 2 and the second bone conduction loudspeaker 4 are not interfered with each other, the problem of howling is effectively solved, the call quality is improved, when the user listens to music, the ears on two sides of the user can listen to sound, the three-dimensional listening effect is realized, and the quality requirement of the user on the listening sense is met.

The utility model also provides a communication system. The communication system comprises an electronic device and the bone conduction device 100. The bone conduction device 100 establishes a communication connection with the electronic device, so that voice signal transmission or audio signal transmission is realized between the bone conduction device 100 and the electronic device. The electronic device includes, but is not limited to, a mobile phone, a palm top computer, a smart band, a multimedia player, a tablet computer, and the like.

The foregoing are some embodiments of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims (10)

1. The utility model provides a bone conduction device, its characterized in that, bone conduction device includes support, bone conduction microphone, first bone conduction speaker and second bone conduction speaker, first bone conduction speaker reaches bone conduction microphone locates the one end of support, second bone conduction speaker locates the other end of support, bone conduction microphone includes adapter and audio amplifier, the adapter is used for gathering sound signal and will sound signal turns into the signal of telecommunication, the audio amplifier electricity is connected the adapter, audio amplifier is used for enlargiing the signal of telecommunication of adapter.

2. The bone conduction device of claim 1, wherein the bracket includes a first contact portion, the bone conduction device further comprising a first pressure sensor disposed on the first contact portion, the first pressure sensor being configured to sense a pressure value experienced by the first contact portion.

3. The bone conduction device of claim 2, further comprising a first controller electrically connected to the first pressure sensor and the audio amplifier, the first controller configured to adjust the amplification of the electrical signal by the audio amplifier based on a pressure value of the first pressure sensor.

4. The bone conduction device as claimed in claim 2, further comprising a first switch connected between the microphone and the audio amplifier, and a second controller electrically connected to the first pressure sensor and the first switch, the second controller being configured to control the first switch to be turned off or on according to a pressure value of the first pressure sensor.

5. The bone conduction device according to any one of claims 1 to 4, wherein the microphone includes a first connection terminal and a second connection terminal, the audio amplifier includes a first resistor, a second resistor, a transistor, and a capacitor, a base terminal of the transistor is connected to the first connection terminal of the microphone, the first resistor is connected between the first connection terminal of the microphone and a collector terminal of the transistor, the second resistor is connected in parallel to the capacitor, and the second resistor and the capacitor are connected between the second connection terminal of the microphone and an emitter terminal of the transistor.

6. The bone conduction device according to any one of claims 1 to 4, wherein the bracket further comprises a second contact portion, and the first bone conduction speaker comprises a first vibrating portion that contacts the second contact portion to emit a vibration signal through the second contact portion; the bone conduction device further comprises a second pressure sensor and a third controller, the second pressure sensor is arranged on the second contact part and used for sensing the pressure value received by the second contact part, and the third controller is used for adjusting the size of the vibration signal sent by the first vibration part according to the pressure value of the second pressure sensor.

7. The bone conduction device according to any one of claims 1 to 4, wherein the bracket further comprises a third contact portion, and the second bone conduction speaker comprises a second vibration portion that contacts the third contact portion to emit a vibration signal through the third contact portion; the bone conduction device further comprises a third pressure sensor and a fourth controller, the third pressure sensor is arranged on the third contact part and used for sensing the pressure value received by the third contact part, and the fourth controller is used for adjusting the vibration signal sent by the second vibration part according to the pressure value of the third pressure sensor.

8. The bone conduction device according to any one of claims 1 to 4, further comprising a bone conduction controller and a second switch, wherein the bone conduction controller is electrically connected to the second bone conduction speaker, and the bone conduction controller is connected to the first bone conduction speaker or the bone conduction microphone via the second switch; when the bone conduction device is applied to a call scene, the second switch conducts the bone conduction controller and the bone conduction microphone; when the bone conduction device receives a media audio signal, the second switch conducts the bone conduction controller and the first bone conduction loudspeaker.

9. The bone conduction device of claim 8, further comprising a bluetooth module in parallel with the bone conduction controller and a power source in parallel with the bluetooth module.

10. A communication system, comprising an electronic device and the bone conduction device according to any one of claims 1 to 9, wherein the bone conduction device is communicatively connected to the electronic device.

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