CN112055277A

CN112055277A - Wireless electronic hearing needle based on bone conduction and signal transmission method thereof

Info

Publication number: CN112055277A
Application number: CN201910948378.7A
Authority: CN
Inventors: 翟永杰; 杨旭; 彭雅妮
Original assignee: North China Electric Power University
Current assignee: North China Electric Power University
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-12-08
Anticipated expiration: 2039-10-08
Also published as: CN112055277B

Abstract

The invention discloses a wireless electronic listening pin based on bone conduction and a signal transmission method thereof. The vibration signal that the needle was gathered with telescopic listening to the wireless electron listening needle based on bone conduction is converted and is transmitted to listening to the needle singlechip through listening to the electret adapter in the needle box, transmits bone conduction formula bluetooth headset through listening to the needle bluetooth module in, plays through the bone conduction engine. The wireless connection mode is adopted between the hearing needle device and the bone conduction type Bluetooth earphone, so that the moving range of workers is enlarged, and meanwhile, the telescopic hearing needle structure is adopted, so that the workers can flexibly adjust the total length of the hearing needle according to different requirements, the flexibility of using hearing needle equipment is enhanced, and the safety of the workers is guaranteed to a certain extent. In addition, the bone conduction type Bluetooth headset adopts the bone conduction engine to play acoustic signals for workers, so that the harm to human ears is reduced, the eardrum of the workers is prevented from being damaged, and the use safety is improved.

Description

Wireless electronic hearing needle based on bone conduction and signal transmission method thereof

Technical Field

The invention relates to the technical field of power equipment inspection, in particular to a bone conduction-based wireless electronic listening pin and a signal transmission method thereof.

Background

Along with the continuous development of power plants, the requirement for power equipment inspection is continuously increased, and the efficiency of equipment inspection is greatly improved by using the listening pins. However, the current listening needle device still stays at the traditional design stage, a worker needs to stand on one's side when using the listening needle, the ear is tightly attached to the listening needle, or a headset detects a vibration signal of equipment, the using modes can limit the moving range of the worker due to the conditions of line length, rod length and the like, and certain danger exists when the worker approaches the equipment in a short distance. In addition, most listening modes of the existing listening needle scheme carry out information acquisition in a mode that an in-ear headphone or a listening needle is tightly attached to one section of a human ear, and the like, so that a worker is very easy to be affected by sudden high-decibel vibration sound to cause damage to the tympanic membrane.

Disclosure of Invention

The invention aims to provide a bone conduction-based wireless electronic listening needle and a signal transmission method thereof, and solves the problems that the traditional listening needle device limits the movement range of workers, so that the safety is low, and the conventional listening mode has great harm to the eardrums of the workers.

In order to achieve the purpose, the invention provides the following scheme:

a bone conduction based wireless electronic hearing pin, the bone conduction based wireless electronic hearing pin comprising: the device comprises an ear-pin device and a bone conduction type Bluetooth earphone; the needle listening device comprises a needle listening box and a telescopic needle listening connected with the needle listening box; the bone conduction type Bluetooth headset comprises a bone conduction headset and a signal receiving and transmitting device installed on the bone conduction headset; the needle listening box comprises a box body, and an electret sound pick-up, a needle listening singlechip and a needle listening Bluetooth module which are arranged in the box body; the signal receiving and transmitting device comprises an earphone single chip microcomputer and an earphone Bluetooth module;

the electret sound pick-up is positioned at the interface of the sliding joint at the tail section of the telescopic listening pin and the box body; the electret sound pick-up and the listening needle Bluetooth module are respectively connected with the listening needle single chip microcomputer; the earphone Bluetooth module is connected with the listening pin Bluetooth module in a matching way; the earphone Bluetooth module is connected with the earphone single chip microcomputer; the earphone single chip microcomputer is connected with a bone conduction engine of the bone conduction earphone.

Optionally, the telescopic listening pin comprises a listening pin tip and a plurality of sliding sections; the tail end of the point end of the listening needle is connected with the head end of the first section of sliding section in the plurality of sections of sliding sections through a buckle; two adjacent sections of the sliding sections are connected through a buckle to form a telescopic structure; and the last sliding joint of the multiple sections of sliding joints is respectively connected with the electret sound pick-up and the box body.

Optionally, the hearing needle box further comprises a plurality of self-locking frequency-modulation buttons; the plurality of self-locking frequency-modulation buttons are fixed on one side of the box body; the plurality of self-locking frequency modulation buttons are respectively connected with a plurality of input and output interfaces of the listening needle single chip microcomputer.

Optionally, the needle box further comprises an SD memory card; the box body is provided with an SD card socket; the SD memory card is placed in the SD card socket; the SD memory card is connected with the listening needle single chip microcomputer.

Optionally, the bone conduction earphone comprises an ear-hanging earphone structure, a bone conduction engine and an elastic vibration element; the two bone conduction engines are respectively arranged inside the left earphone and the right earphone of the ear-hanging earphone structure; the two elastic vibration elements are respectively arranged at the inner sides of the left earphone and the right earphone of the ear-hanging earphone structure and are respectively tightly attached to the two bone conduction engines.

Optionally, the signal transceiver further includes an earphone rechargeable battery and a potentiometer; a volume + key and a volume-key are arranged on one side of the ear-hanging earphone structure; the volume + key, the volume-key, the earphone rechargeable battery and the earphone single chip microcomputer are all connected with the potentiometer; the potentiometer is also connected with the bone-conduction engine.

A signal transmission method of a wireless electronic hearing pin based on bone conduction, the signal transmission method comprising:

the vibration signal of the power equipment is transmitted to the electret sound pick-up through each section of sliding joint by the tip end of the telescopic listening needle;

the electret sound pick-up converts the vibration signal into an analog electric signal and sends the analog electric signal to the listening needle single chip microcomputer;

the listen to the needle singlechip converts the analog electric signal into a digital electric signal, and wirelessly transmits the digital electric signal to the earphone Bluetooth module through the listen to the needle Bluetooth module;

the earphone Bluetooth module sends the received digital electric signal to an earphone single chip microcomputer;

the earphone single chip microcomputer converts the digital electric signal into an analog electric signal and transmits the analog electric signal to the bone conduction engine;

and the bone-conduction engine converts the analog electric signal into an acoustic signal to play.

Optionally, before the radio transmitting the digital electrical signal to the bluetooth headset module through the bluetooth headset module, the method further includes:

the listen pin single chip microcomputer acquires a selected frequency band of a current self-locking frequency modulation button;

and the hearing-pin singlechip amplifies and filters the digital electric signal according to the selected frequency band to generate a processed digital electric signal.

and the listen to needle singlechip stores the digital electric signal into an SD memory card.

According to the specific embodiment provided by the invention, the invention discloses the following technical effects:

the invention provides a bone conduction-based wireless electronic listening needle and a signal transmission method thereof. The wireless connection mode is adopted between the hearing needle device and the bone conduction type Bluetooth earphone, so that the moving range of workers is enlarged, and meanwhile, the telescopic hearing needle structure is adopted, so that the workers can flexibly adjust the total length of the hearing needle according to different requirements, the flexibility of using hearing needle equipment is enhanced, and the safety of the workers is guaranteed to a certain extent. In addition, the bone conduction type Bluetooth headset adopts the bone conduction engine to play acoustic signals for workers, so that the harm to human ears is reduced, the eardrum of the workers is prevented from being damaged, and the use safety is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required 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 for those skilled in the art, other drawings can be obtained according to the drawings provided by the present invention without any creative effort.

FIG. 1 is a schematic structural diagram of an ear-piercing device provided by the present invention;

FIG. 2 is a schematic view of the connection mode of the ear-piercing device provided by the present invention;

fig. 3 is a schematic structural diagram of a bone conduction type bluetooth headset according to the present invention;

fig. 4 is a schematic view of a connection mode of the bone conduction type bluetooth headset provided by the present invention;

the reference numbers in the figures denote: 1 listening needle tip, 2 sliding joints, 3 buckles, 4 boxes, 5 listening needle Micro-USB sockets, 6SD card sockets, 7 self-locking frequency modulation buttons, 8 electret pickups, 9 listening needle single-chip microcomputers, 10 listening needle Bluetooth modules, 11SD memory cards, 12 listening needle rechargeable batteries, 13 in-ear earphone structures, 14 bone conduction engines, 15 elastic vibrating elements, 16 volume + keys, 17 volume-keys, 18 power indicator lamps, 19 power keys, 20 earphone Micro-USB sockets, 21 signal transceiver devices, 22 earphone single-chip microcomputers, 23 earphone Bluetooth modules, 24 earphone rechargeable batteries and 25 potentiometers.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

The invention relates to a bone conduction-based wireless electronic hearing aid, which comprises a hearing aid device and a bone conduction type Bluetooth earphone. The device comprises a needle box and a telescopic needle connected with the needle box. The bone conduction type Bluetooth headset comprises a bone conduction headset body and a signal receiving and transmitting device installed on the bone conduction headset body.

Fig. 1 is a schematic structural diagram of an ear-piercing device provided by the present invention. Fig. 2 is a schematic view of the connection mode of the ear-piercing device provided by the present invention. As shown in fig. 1 and 2, the needle listening device comprises a needle listening box and a telescopic needle connected with the needle listening box.

Wherein, the telescopic listening needle comprises a listening needle tip 1 and a plurality of sliding sections 2. The tail end of the listening needle tip 1 is connected with the head end of the first section of sliding section in the plurality of sections of sliding sections 2 through a buckle. Two adjacent sections of the sliding sections 2 are connected through the buckles 3 to form a telescopic structure. The last sliding joint of the multiple sections of sliding joints 2 is respectively connected with the electret sound pick-up 8 and the box body 4 of the hearing needle box.

Preferably, the telescopic listening needle adopted by the invention is a five-section telescopic listening needle which is tightly connected with a listening needle box body 4 and specifically comprises four sections of sliding sections 2 and a listening needle tip 1. The tip 1 of the acoustic needle is made of solid steel, the length of the acoustic needle is 25 +/-2 cm, and the acoustic needle is used for detecting a certain point of direct contact equipment. The sliding sections 2 are stainless steel hollow pipe fittings, the wall thickness is more than 1.5mm, and two adjacent sections of the sliding sections 2 are connected through the buckles 3 to form a telescopic structure (such as a telescopic structure of a supporting rod of a folding umbrella) for adjusting the length of the listening needle according to actual conditions. The buckles 3 between the sliding joints 2 are used for fixing the sliding joint part of the listening pin. The size of the telescopic listening needle is 30 +/-2 cm when the telescopic listening needle is completely tightened, the size of the telescopic listening needle is 120 +/-2 cm when the telescopic listening needle is completely stretched, and the length of the telescopic listening needle can be adjusted according to the position of the tested electric equipment and the field environment before use. When the electret microphone is used, the tip of the listening needle is propped against a certain position of equipment, and a vibration signal of the equipment is transmitted to the electret microphone 8 through each section of sliding joint 2.

The hearing needle box is used for processing and sending the audio signals collected by the telescopic hearing needle. As shown in fig. 1 and fig. 2, the hearing pin box comprises a box body 4, an electret sound pick-up 8, a hearing pin single chip microcomputer 9, a hearing pin bluetooth module 10, an SD memory card 11, a hearing pin rechargeable battery 12, a hearing pin Micro-USB socket 5, an SD card socket 6 and a self-locking frequency modulation button 7, which are arranged in the box body 4.

The listening pin Micro-USB socket 5 and the listening pin rechargeable battery 12 are used for supplying power to a listening pin singlechip 9 in a listening pin box. The SD card socket 6 is used for placing an SD memory card 11, and the SD memory card 11 is used for storing collected audio. And the self-locking frequency modulation button 7 is used for the staff to select different frequency bands for detection. The electret sound pick-up 8 is positioned at the interface of the last sliding joint of the telescopic listening pin and the box body 4. The electret sound pick-up 8 and the listening needle Bluetooth module 10 are respectively connected with the listening needle single chip microcomputer 9.

As shown in fig. 1, the box body 4 of the auscultatory needle box is preferably a cuboid with a length of 15cm x 10cm (length x width x height), and is rigidly connected with the sliding joint at the tail end of the telescopic auscultatory needle. As shown in fig. 1 and 2, a plurality of the self-locking frequency-modulation buttons 7 are fixed on one side of the box body 4; the plurality of self-locking frequency modulation buttons 7 are respectively connected with a plurality of input/output interfaces (I/O interfaces) of the listening pin singlechip 9.

Preferably, four self-locking frequency modulation buttons 7 are arranged at the top end of the box body 4, and the self-locking frequency modulation buttons 7 are self-locking buttons and have the functions of frequency modulation buttons. The four self-locking frequency modulation buttons 7 (frequency modulation buttons for short) correspond to different frequency bands respectively, the frequency bands of the four frequency modulation buttons are a low frequency band (20 Hz-150 Hz), a medium frequency band (150 Hz-500 Hz), a medium frequency band (500 Hz-5000 Hz) and a high frequency band (5000 Hz-20 KHz) in sequence, the four frequency modulation buttons 7 are connected with an I/O interface of the listening pin singlechip 9 in the box body 4 and used as an input control end to regulate and control a program carried by the singlechip, and the application range of the filter in the program can be changed. When the frequency modulation button is used, a full-band signal is received when any frequency modulation button is not pressed, and a corresponding frequency band is selected when a certain frequency modulation button is pressed; if the frequency band is required to be changed after the frequency modulation button is pressed, the button of the newly selected frequency band can be directly pressed, and the button of the previously selected frequency band can automatically bounce, namely, the button is changed into the newly selected frequency band; when the button of the new frequency selection band is pressed again, the button is bounced, and then the frequency band is changed into the full frequency band.

Two sockets are arranged on one side of a box body 4 of the listening pin box, and are a listening pin Micro-USB socket 5 and an SD card socket 6 respectively. The inside of the listening pin Micro-USB socket 5 is connected with a listening pin rechargeable battery 12, and the listening pin rechargeable battery 12 is arranged in the box body 4 and is connected with a VCC interface of the listening pin singlechip 9, so that stable power supply can be provided for the singlechip 9. The battery 12 may be charged using a Micro-USB charging cable during charging.

The SD card socket 6 is a general SD memory card slot and is connected with a data input interface (serial interface) of the listen-in single chip microcomputer 9 in the box body 4. The SD memory card 11 is placed in the SD card socket 6, is connected with the listening needle single chip microcomputer 9 and is used for storing collected audio.

The electret pick-up 8 is located at the interface of the box 4 and the last section slip joint. When the earphone works, a vibration signal is transmitted through the tip end 1 of the earphone pin and the sliding sections 2 of all levels and is received by the electret sound pick-up 8, and the sound pick-up 8 converts the vibration signal into an analog electric signal which is connected with an ADC (analog-to-digital converter) interface of the earphone pin singlechip 9.

The listen to needle bluetooth module 10 chooses LQ _ BTM2V2 for use as the core chip, is connected with pins such as RXD/TXD of the listen to needle singlechip 9 in the box body 4. The hearing-pin Bluetooth module 10 is in charge of being connected with the earphone Bluetooth module in a matching mode, and transmits a digital electric signal to the bone conduction type Bluetooth earphone, so that a wireless communication function is achieved.

The listening single-chip microcomputer 9 is positioned in the listening box body 4, plays a main control function of the listening system and realizes power supply and information control functions of all the modules. During operation, the earpiece singlechip 9 receives the analog electrical signal of the electret microphone 8, converts the analog electrical signal into a digital electrical signal after A/D conversion (analog-to-digital-to-electrical conversion), performs corresponding program amplification and filtering on the digital electrical signal according to the selected frequency band of the frequency modulation button 7, generates a processed digital electrical signal, further sends the processed digital electrical signal into the earpiece bluetooth module 10 for wireless transmission, and stores the processed digital electrical signal through the SD memory card 11.

Fig. 3 is a schematic structural diagram of a bone conduction type bluetooth headset according to the present invention. Fig. 4 is a schematic diagram of a connection mode of the bone conduction type bluetooth headset provided by the present invention. As shown in fig. 3 and 4, the bone conduction bluetooth headset of the present invention includes two parts, namely, a bone conduction headset and a signal transceiver. The bone conduction earphone comprises an ear-hanging earphone structure 13, a bone conduction engine 14, an elastic vibration element 15, a volume + key 16, a volume-key 17, a power indicator light 18, a power key 19 and an earphone Micro-USB socket 20. The signal transceiver 21 is installed behind the ear-hanging earphone structure 13, and the signal transceiver 21 comprises an earphone single chip microcomputer 22, an earphone Bluetooth module 23, an earphone rechargeable battery 24 and a potentiometer 25. The earphone bluetooth module 23 is used for pairing and connecting with the listen needle bluetooth module 10. The earphone Bluetooth module 23 is connected with the earphone single chip 22. The earphone single chip 22 is connected with the bone conduction engine 14 of the bone conduction earphone through a potentiometer 25.

The ear-hanging earphone structure 13 is a hardware structure outside the earphone, and the appearance of the ear-hanging earphone is an ear-hanging earphone, and an earphone Micro-USB socket 20, a power key 19, a volume adjusting key (including a volume + key 16 and a volume-key 17) and a power indicator 18 are arranged on the ear-hanging earphone structure.

The Micro-USB socket 20 of the earphone is positioned behind the ear-hanging earphone structure 13 and is connected with the rechargeable battery 24 of the earphone, and the rechargeable battery 24 of the earphone is connected with the VCC interface of the earphone singlechip 22 and can provide stable power supply for the earphone singlechip 22. When charging, the battery can be charged by a Micro-USB charging wire.

The power key 19 is located at the rear right side of the ear-hanging earphone structure 13 and is used for controlling a switch between a rechargeable battery 24 of the earphone and a VCC interface of the earphone singlechip 22, and then controlling whether the earphone supplies power or not.

The volume adjusting key is located on the right side of the ear-hanging type earphone structure 13 and is divided into a volume + key 16 and a volume-key 17, which can control the resistance of a potentiometer 25 located inside the bone conduction earphone, and then control the power supply of the bone conduction engine 14, namely the playing volume of the bone conduction earphone.

The power indicator light 18 is located beside the volume adjusting key on the right side of the ear-hanging earphone structure 13 and connected with an I/O interface of the earphone single chip microcomputer 22. In the working state, the power indicator 18 is a green light which is turned on normally to indicate that the electric quantity is sufficient, and a red light which is turned on normally to indicate that the electric quantity is insufficient. When the earphone is charged, the power indicator 18 is a red light which is turned on normally to indicate charging, and a green light which is turned on normally to indicate full charging. When the bluetooth pairing connection is performed, the power indicator 18 is in a red light and green light alternate flashing state, which indicates that the bluetooth headset module 23 and the bluetooth headset module 10 in the listening box are in a pairing state.

The earphone bluetooth module 23 selects LQ _ BTM2V2 as a core chip and is connected with pins such as RXD/TXD of the earphone internal singlechip 22. The earphone Bluetooth module 23 is responsible for being connected with the needle listening box Bluetooth module 10 in a matching mode, receives digital electric signals transmitted by the needle listening box and transmits the digital electric signals to the earphone single chip microcomputer 22, and therefore the wireless communication function is achieved.

The bone-conduction engine 14 is located inside the left and right earphones, and is connected to the I/O interface of the earphone single chip 22. Specifically, the two bone conduction engines 14 are respectively installed inside the left and right earphones of the ear-hung earphone structure 13; the two elastic vibration elements 15 are respectively installed at the inner sides of the left and right earphones of the ear-hung earphone structure 13 and respectively cling to the two bone conduction engines 14. The volume + key 16, the volume-key 17, the earphone rechargeable battery 24 and the earphone single chip microcomputer 22 which are arranged on one side of the ear-hanging earphone structure 13 are all connected with the potentiometer 25; the potentiometer 25 is also connected to the bone conduction engine 14.

When the bone conduction type Bluetooth headset works, a worker hangs the bone conduction type Bluetooth headset on the ear, and the elastic vibration element 15 is attached to the cheekbone beside the ear. The bone transmission engine 14 can receive the analog electrical signal transmitted by the earphone singlechip 22, and then control the elastic vibration element 15 to vibrate, so that the device vibration sound is transmitted to the auditory nerve through the cheekbone.

The earphone singlechip 22 is positioned in the signal transceiver 21, plays the main control function of the earphone listening system and realizes the power supply and information control functions of each module. When the earphone works, the digital electric signals of the earphone Bluetooth module 23 are received, converted into analog electric signals through D/A conversion (digital-to-analog-to-electric conversion) in the earphone single chip microcomputer 22, and transmitted to the bone conduction engine 14 for sound playing.

The invention adopts the mode of combining the listening needle device and the bone conduction type Bluetooth earphone, realizes the wireless listening and audio acquisition of the listening needle on the sound signal of the electric equipment through the bone conduction technology, and is convenient for the working personnel to carry out fault diagnosis on the electric equipment.

The invention also provides a signal transmission method of the wireless electronic hearing pin based on bone conduction, which comprises the following steps:

the vibration signal of the power equipment is transmitted to the electret sound pick-up 8 by the listening needle tip 1 of the telescopic listening needle through each section of sliding joint 2;

the electret sound pick-up 8 converts the vibration signal into an analog electric signal and sends the analog electric signal to the listening needle single chip microcomputer 9;

the listen pin singlechip 9 converts the analog electric signal into a digital electric signal, and the digital electric signal is wirelessly transmitted to the earphone Bluetooth module 23 through the listen pin Bluetooth module 10;

the earphone Bluetooth module 23 sends the received digital electric signal to the earphone single chip 22;

the earphone singlechip 22 converts the digital electric signal into an analog electric signal and transmits the analog electric signal to the bone transmission engine 14;

the bone-conduction engine 14 converts the analog electrical signal into an acoustic signal for playing.

Wherein before wirelessly transmitting the digital signal to the earphone Bluetooth module through the listen-to-talk Bluetooth module, the method further comprises:

the said listening needle one-chip computer 9 obtains the frequency band selected of the present auto-lock frequency modulation button 7;

the said auscultation singlechip 9 amplifies, filters the said digital electrical signal according to the said selected frequency channel, produce the digital electrical signal after processing;

the listen to the needle singlechip 9 stores the digital electric signal into the SD memory card 11.

The existing needle listening device scheme mainly has the following defects:

(1) when the worker uses the listening needle, the worker needs to stand on one's side to tightly attach the ear to the listening needle, or the vibration signal of the headphone detection device, the use modes can limit the moving range of the worker due to the conditions such as line length, rod length and the like, and certain danger exists when the worker approaches the device in a short distance.

(2) The use mode of the existing hearing needle scheme is mostly direct on-site reading, and the experiential inspection personnel are required to analyze the vibration signals in real time, so that follow-up data review and learning are not facilitated, and the accuracy of fault judgment is reduced.

(3) The vibration signal that the current gill-pin scheme was gathered is full frequency channel collection mostly, and equipment trouble sound gathers in a certain frequency range mostly, and the more environmental noise of all the other frequency channels distribution, and full frequency channel sound is gathered and is unfavorable for the clear acquisition of target sound.

(4) Most listening modes of the existing listening needle scheme carry out information acquisition in a mode that an in-ear headphone or a listening needle is tightly attached to one section of a human ear, and the like, so that a worker is very easy to be affected by sudden high-decibel vibration sound to cause damage to the tympanic membrane.

The electret sound pick-up 8 converts sound signals conducted through the telescopic listening pin into analog electric signals, the analog electric signals output by the electret sound pick-up 8 are converted from analog electric signals to digital electric signals through an ADC (analog to digital converter) interface of the listening pin singlechip 9, the analog electric signals are converted into digital electric signals, the digital electric signals are amplified and filtered according to a frequency band selected by a user, and then the digital electric signals are sent to the listening pin Bluetooth module 10 and stored in an SD (secure digital) memory card 11, so that subsequent extraction is facilitated. Compared with the prior art, the wireless electronic hearing pin based on bone conduction and the signal transmission method thereof have the advantages that:

(1) the invention has the advantages that the wireless connection form between the hearing needle device and the bone conduction type Bluetooth earphone is used, the moving range of workers is enlarged, meanwhile, the telescopic hearing needle structure is adopted, the workers can flexibly adjust the total length of the hearing needle according to different requirements, the flexibility of using the hearing needle equipment is enhanced, and the safety of the workers is ensured to a certain extent.

(2) The invention has the advantages that the auscultation signals can be stored through the SD memory card 11, which is not only beneficial to the subsequent review and digital processing of the acoustic signals of the equipment, but also more convenient for field personnel with abundant experience to guide other working personnel by using the signals and improve the working level of the personnel.

(3) The invention has the further advantages that the audible vibration frequency range can be selected through the frequency modulation button 7, so that inspection personnel can eliminate the interference of other noises, and can know the equipment sound more clearly, thereby determining the fault type more accurately.

(4) The bone conduction type Bluetooth headset has the advantages that the bone conduction type Bluetooth headset enables workers to receive sound signals, reduces harm to human ears and prevents eardrums of the workers from being damaged.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed herein should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

The principles and embodiments of the present invention have been described herein using specific examples, which are presented solely to aid in the understanding of the apparatus and its core concepts; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims

1. A bone conduction based wireless electronic hearing pin, characterized in that the bone conduction based wireless electronic hearing pin comprises: the device comprises an ear-pin device and a bone conduction type Bluetooth earphone; the needle listening device comprises a needle listening box and a telescopic needle listening connected with the needle listening box; the bone conduction type Bluetooth headset comprises a bone conduction headset and a signal receiving and transmitting device installed on the bone conduction headset; the needle listening box comprises a box body, and an electret sound pick-up, a needle listening singlechip and a needle listening Bluetooth module which are arranged in the box body; the signal receiving and transmitting device comprises an earphone single chip microcomputer and an earphone Bluetooth module;

2. The bone conduction-based wireless electronic hearing pin according to claim 1, wherein the telescopic hearing pin comprises a hearing pin tip and a plurality of sliding segments; the tail end of the point end of the listening needle is connected with the head end of the first section of sliding section in the plurality of sections of sliding sections through a buckle; two adjacent sections of the sliding sections are connected through a buckle to form a telescopic structure; and the last sliding joint of the multiple sections of sliding joints is respectively connected with the electret sound pick-up and the box body.

3. A bone conduction-based wireless electronic hearing pin according to claim 1, wherein the hearing pin case further comprises a plurality of self-locking fm buttons; the plurality of self-locking frequency-modulation buttons are fixed on one side of the box body; the plurality of self-locking frequency modulation buttons are respectively connected with a plurality of input and output interfaces of the listening needle single chip microcomputer.

4. A bone conduction-based wireless electronic hearing instrument according to claim 1, wherein the hearing instrument case further comprises an SD memory card; the box body is provided with an SD card socket; the SD memory card is placed in the SD card socket; the SD memory card is connected with the listening needle single chip microcomputer.

5. The bone conduction-based wireless electronic hearing pin according to claim 1, wherein the bone conduction headset comprises an in-ear headset structure, a bone conduction engine, and a resilient vibration element; the two bone conduction engines are respectively arranged inside the left earphone and the right earphone of the ear-hanging earphone structure; the two elastic vibration elements are respectively arranged at the inner sides of the left earphone and the right earphone of the ear-hanging earphone structure and are respectively tightly attached to the two bone conduction engines.

6. The bone conduction-based wireless electronic hearing pin according to claim 5, wherein the signal transceiver further comprises an earphone rechargeable battery and a potentiometer; a volume + key and a volume-key are arranged on one side of the ear-hanging earphone structure; the volume + key, the volume-key, the earphone rechargeable battery and the earphone single chip microcomputer are all connected with the potentiometer; the potentiometer is also connected with the bone-conduction engine.

7. A signal transmission method of a bone conduction-based wireless electronic hearing pin, which is applied to the bone conduction-based wireless electronic hearing pin of claim 1; the signal transmission method comprises the following steps:

8. The signal transmission method according to claim 7, wherein before said wirelessly transmitting the digital electrical signal to the headset bluetooth module via the listen-to-talk bluetooth module, the method further comprises:

9. The signal transmission method according to claim 7, wherein before said wirelessly transmitting the digital electrical signal to the headset bluetooth module via the listen-to-talk bluetooth module, the method further comprises: