CN217721479U - Digital hearing aid circuit supporting low-power-consumption Bluetooth - Google Patents
Digital hearing aid circuit supporting low-power-consumption Bluetooth Download PDFInfo
- Publication number
- CN217721479U CN217721479U CN202221315181.3U CN202221315181U CN217721479U CN 217721479 U CN217721479 U CN 217721479U CN 202221315181 U CN202221315181 U CN 202221315181U CN 217721479 U CN217721479 U CN 217721479U
- Authority
- CN
- China
- Prior art keywords
- hearing aid
- control circuit
- chip
- circuit
- pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Circuit For Audible Band Transducer (AREA)
Abstract
The utility model discloses a support digital audiphone circuit of bluetooth low energy, including sound input device and receiver, sound input device's output inserts audiphone control circuit, and audiphone control circuit is connected with bluetooth low energy control circuit and receiver, and audiphone control circuit still inserts power supply circuit with bluetooth low energy control circuit. This support digital audiphone circuit of bluetooth low energy adjusts audiphone parameter by oneself according to user's self condition to satisfy user's self demand, reach simple operation, more intelligent, humanized, the function switches user parameter demand more, improve user's use and experience.
Description
Technical Field
The utility model relates to a digital audiphone technical field specifically is a support digital audiphone circuit of bluetooth low energy.
Background
At present, digital hearing aids on the market are mainstream products of the current hearing aids due to the characteristics of high performance and high sound quality. Digital machines on the market today are classified into non-fittable hearing aids and fittable hearing aids according to the fitting function. The hearing aids available in the market need a user to bring the hearing aids to an appointed store, and store personnel can carry out parameter fitting adjustment on the machine through a specific fitting line, so that the user cannot operate the hearing aids by himself, and the set fitting parameters are not suitable for the daily living environment of the user due to quiet environment of the store, so that the user operation is inconvenient and the user experience is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a support digital audiphone circuit of bluetooth low energy, have reach the simple operation, more intelligent, humanized, the function switches user parameter demand more, improves the advantage that user's use was experienced, has solved the problem among the prior art.
In order to achieve the above purpose, the utility model provides a following technical scheme: the digital hearing aid circuit supporting the low-power-consumption Bluetooth comprises a sound input device and a receiver, wherein the output end of the sound input device is connected with a hearing aid control circuit, the hearing aid control circuit is connected with the low-power-consumption Bluetooth control circuit and the receiver, and the hearing aid control circuit and the low-power-consumption Bluetooth control circuit are also connected with a power supply circuit.
Preferably, the sound input device comprises a microphone.
Preferably, pins 22 and 33 of a digital hearing aid signal processing chip U3 in the hearing aid control circuit are connected with pins 1 and 2 of a chip U9 of the low-power consumption Bluetooth control circuit, a pin 21 of the digital hearing aid signal processing chip U3 is connected in series with a switch SW1 and is grounded, pins 18, 26, 31 and 32 of the digital hearing aid signal processing chip U3 are connected with a pin of a level conversion chip U4, and the level conversion chip U4 is connected with a microphone U1.
Preferably, pins 8 and 9 of a bluetooth chip U5 in the low power consumption bluetooth control circuit are connected with pins 23 and 34 of a digital hearing aid signal processing chip U3, pin 2 of the bluetooth chip U5 and a capacitor C4 are connected with 1.8V voltage in common, pin 1 of the bluetooth chip U5 is connected with 1.2V voltage, pin 11 of the bluetooth chip U5 is connected with a parallel connection interface of a resistor R9 and a resistor R10, and the other end of the resistor R9 is connected with 3.7V voltage.
Preferably, in the power supply circuit, a pin 5 of a chip U7 is connected with a parallel connection port of a resistor R4 and a CH _ EN charging input terminal, a pin 1 of the chip U7, a capacitor C9, a positive electrode of a power supply BT1, the resistor R4 and a negative electrode of a diode D1 are connected with a voltage of 3.7V in parallel, a negative electrode of the power supply BT1, the other end of the capacitor C9, a capacitor C8 and a pin 10 of the chip U7 are grounded in common, and a positive electrode of the diode D1 is connected with a CHARG charging input terminal.
Preferably, the receiver comprises a loudspeaker for converting the electric signal into the sound signal.
Compared with the prior art, the beneficial effects of the utility model are as follows:
this support digital audiphone circuit of bluetooth low energy adjusts audiphone parameter by oneself according to user's self condition to satisfy user's self demand, reach simple operation, more intelligent, humanized, the function switches user parameter demand more, improve user's use and experience.
Drawings
FIG. 1 is a block diagram of the present invention;
fig. 2 is a schematic diagram of a hearing aid control circuit according to the present invention;
FIG. 3 is a schematic diagram of the Bluetooth low energy control circuit of the present invention;
fig. 4 is a schematic diagram of the power supply circuit 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, a digital hearing aid circuit supporting bluetooth low energy includes a sound input device and a receiver, an output end of the sound input device is connected to a hearing aid control circuit, the hearing aid control circuit is connected to the bluetooth low energy control circuit and the receiver, the hearing aid control circuit and the bluetooth low energy control circuit are further connected to a power supply circuit, the sound input device includes a microphone, the receiver includes a speaker for converting an electrical signal into a sound signal, the hearing aid control circuit is a functional circuit for implementing amplification output of the hearing aid control circuit, and is electrically connected to the microphone, and collects the electrical signal collected and converted by the microphone, amplifies the electrical signal, and outputs the signal to the receiver to implement a hearing aid function, which is implemented by a digital hearing aid signal processing chip, and functions such as signal AD sampling, signal differentiation digital signal processing and amplification, and DAC output can be implemented inside the digital hearing aid signal processing chip;
bluetooth low energy control circuit, internal integrated antenna to carry out the communication through wired communication protocol bus and audiphone control circuit, simultaneously, it carries out wireless communication through antenna and bluetooth of the mobile phone, carries out wireless bluetooth communication through bluetooth low energy and cell-phone for the realization, and with audiphone control circuit wired communication, realize adjusting, checking and matching audiphone control circuit's internal parameter.
The power supply circuit is a power supply device for supplying power to modules such as a hearing aid control circuit, a low-power Bluetooth control circuit and the like, and comprises a battery and a charging and discharging power supply management circuit for realizing power consumption such as charging management, discharging voltage conversion and the like of the battery
Referring to fig. 2, pins 22 and 33 of a digital hearing aid signal processing chip U3 in the hearing aid control circuit are connected to pins 1 and 2 of a bluetooth low energy control circuit chip U9, pin 21 of the digital hearing aid signal processing chip U3 is connected in series to switch SW1 and ground, pins 18, 26, 31 and 32 of the digital hearing aid signal processing chip U3 are connected to a pin of a level conversion chip U4, and the level conversion chip U4 is connected to a microphone U1.
A sound collecting hole is formed in the upper surface of the microphone U1, so that sound signals are collected, and electric signals are output to audio digital amplification through internal signal conversion;
the digital hearing aid signal processing chip U3 realizes the functions of processing and amplifying audio digital signals, and can further realize the adjustment of functional parameters such as adjusting the loudness of sound signals of the hearing aid, channels, frequency bands, reducing noise and the like through the parameter setting of an internal algorithm. External U4, U1, U2, U9 and the capacitance resistance around the external U4, U1, U2 and U9 are external circuits for realizing the input and output of the digital hearing aid signal processing IC function;
when the power supply is 1.8V, the signal voltages at the front end and the rear end of the level conversion chip U4 are equal, so that the level conversion chip U4 can be omitted, and if the power supply of the system is less than 1.8V (such as 1.2V), the signal voltages of U1 and U3 are different, and the level conversion must be performed on the level conversion chip U4;
SW1 is a key, and the user can realize the functions of function program switching, volume adjustment and the like of the digital hearing aid signal processing IC by touching the component;
referring to fig. 3, pins 8 and 9 of a bluetooth chip U5 in the bluetooth low energy control circuit are connected to pins 23 and 34 of a digital hearing aid signal processing chip U3, pin 2 of the bluetooth chip U5 and a capacitor C4 are commonly connected to a voltage of 1.8V, pin 1 of the bluetooth chip U5 is connected to a voltage of 1.2V, pin 11 of the bluetooth chip U5 is connected to a parallel connection port of a resistor R9 and a resistor R10, and the other end of the resistor R9 is connected to a voltage of 3.7V.
The communication connection is realized with the digital hearing aid signal processing chip U3 through the 8 th pin and the 9 th pin, and the configuration parameters such as the loudness of an acoustic signal, a channel, a frequency band, noise reduction and other functional parameters in the digital hearing aid signal processing chip U3 can be verified, adjusted and stored;
the resistor R9 and the resistor R10 perform voltage division sampling on the battery voltage to the Bluetooth chip U5, so that the Bluetooth chip U5 monitors the electric quantity, and if the electric quantity is low, the low-electric-quantity alarm function can be realized through communication control over the level conversion chip U4;
referring to fig. 4, a pin 5 of a chip U7 in the power supply circuit is connected to a parallel connection port of a resistor R4 and a CH _ EN charging input terminal, a pin 1 of the chip U7, a capacitor C9, a positive electrode of a power supply BT1, the resistor R4, and a negative electrode of a diode D1 are connected in parallel to a voltage of 3.7V, a negative electrode of the power supply BT1, the other end of the capacitor C9, a capacitor C8, and a pin 10 of the chip U7 are grounded in common, and a positive electrode of the diode D1 is connected to a CHARG charging input terminal;
the three terminals of CHARG, CHARG _ GND and CHG _ EN are charging input ports, metal terminals are embedded into a shell of the hearing aid and between circuit boards, contact media between the hearing aid and an external power supply are realized, the external power supply can output an electric signal through the terminals to charge a battery of the hearing aid, the CHG _ EN realizes a functional pin for switching off the hearing aid after the hearing aid is placed into a charging box, BAT1 supplies power for battery output, and meanwhile, the charging box can also receive the charging energy through three elements of CHARG, CHARG _ GND and D1 to charge and store the energy with the battery. The chip U7 supplies power to each module for realizing the management of the step-down output of the power supply;
in conclusion: this support digital audiphone circuit of bluetooth low energy adjusts audiphone parameter by oneself according to user's self condition to satisfy user's self demand, reach simple operation, more intelligent, humanized, the function switches user parameter demand more, improve user's use and experience.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A digital hearing aid circuit supporting bluetooth low energy, comprising a sound input device and a receiver, characterized in that: the output end of the sound input device is connected with a hearing aid control circuit, the hearing aid control circuit is connected with the low-power-consumption Bluetooth control circuit and the receiver, and the hearing aid control circuit and the low-power-consumption Bluetooth control circuit are also connected with a power supply circuit.
2. A bluetooth low energy enabled digital hearing aid circuit according to claim 1, characterized in that the sound input means comprises a microphone.
3. The circuit of claim 1, wherein pins 22 and 33 of the digital hearing aid signal processing chip U3 in the hearing aid control circuit are connected to pins 1 and 2 of chip U9 of the bluetooth low energy control circuit, pin 21 of the digital hearing aid signal processing chip U3 is connected in series to switch SW1 to ground, pins 18, 26, 31 and 32 of the digital hearing aid signal processing chip U3 are connected to pin of the level conversion chip U4, and the level conversion chip U4 is connected to the microphone U1.
4. The circuit of claim 1, wherein pins 8 and 9 of the bluetooth low energy control circuit are connected to pins 23 and 34 of the digital hearing aid signal processing chip U3, pin 2 of the bluetooth chip U5 is connected to a common capacitor C4 at a voltage of 1.8V, pin 1 of the bluetooth chip U5 is connected to a voltage of 1.2V, pin 11 of the bluetooth chip U5 is connected to a parallel connection port of a resistor R9 and a resistor R10, and the other end of the resistor R9 is connected to a voltage of 3.7V.
5. The circuit of claim 1, wherein pin 5 of the chip U7 of the power supply circuit is connected to the parallel connection port of the charging input terminals of the resistor R4 and CH _ EN, pin 1 of the chip U7, the capacitor C9, the positive terminal of the power supply BT1, the resistor R4 and the negative terminal of the diode D1 are connected in parallel to a voltage of 3.7V, the negative terminal of the power supply BT1, the other terminal of the capacitor C9, the capacitor C8 and the pin 10 of the chip U7 are connected in common to ground, and the positive terminal of the diode D1 is connected to the CHARG charging input terminal.
6. The bluetooth low energy enabled digital hearing aid circuit according to claim 1, characterized in that the receiver comprises a speaker for converting electrical signals into sound signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221315181.3U CN217721479U (en) | 2022-05-30 | 2022-05-30 | Digital hearing aid circuit supporting low-power-consumption Bluetooth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221315181.3U CN217721479U (en) | 2022-05-30 | 2022-05-30 | Digital hearing aid circuit supporting low-power-consumption Bluetooth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217721479U true CN217721479U (en) | 2022-11-01 |
Family
ID=83794837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221315181.3U Active CN217721479U (en) | 2022-05-30 | 2022-05-30 | Digital hearing aid circuit supporting low-power-consumption Bluetooth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217721479U (en) |
-
2022
- 2022-05-30 CN CN202221315181.3U patent/CN217721479U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207382527U (en) | Mobile device and wireless headset | |
| CN103716073B (en) | Bluetooth device | |
| CN206077633U (en) | A kind of In-Ear wireless headset | |
| CN209462553U (en) | Bluetooth headset control circuit and bluetooth headset | |
| CN103945293A (en) | Noise reduction system, and earphone and portable electronic device having the noise reduction system | |
| CN1832365A (en) | Multifunction blue-tooth earphone and its implementing method | |
| CN107770662A (en) | A kind of automatic charging and the implementation method and circuit of switching on and shutting down | |
| CN203151719U (en) | Solar rechargeable Bluetooth headset and vehicle provided with solar rechargeable Bluetooth headset | |
| CN102647646A (en) | Bracelet type Bluetooth earphone and bracelet type Bluetooth earphone circuit | |
| CN203136126U (en) | A photosensitive switching control Bluetooth earphone and a vehicle equipped with such Bluetooth earphone | |
| CN217721479U (en) | Digital hearing aid circuit supporting low-power-consumption Bluetooth | |
| CN210246374U (en) | Charging base for communicating with Bluetooth headset | |
| CN205812361U (en) | A kind of multifunctional sound box | |
| CN209345401U (en) | A kind of smart phone auditory prosthesis | |
| CN208798224U (en) | A kind of hearing aid device system with Bluetooth function | |
| CN205812360U (en) | A kind of Multifunctional blue tooth loudspeaker box | |
| CN204069343U (en) | Bluetooth hearing aids | |
| CN205812362U (en) | A kind of Baffle Box of Bluetooth with emergent charging function | |
| CN210899612U (en) | Bluetooth hearing aid | |
| CN112788485A (en) | Audio signal processing circuit and live sound card | |
| CN203434657U (en) | Active hand microphone and mobile terminal configured with same | |
| CN203180991U (en) | Handset capable of charging other handsets | |
| CN206850961U (en) | A kind of new Bluetooth microphone | |
| CN213880263U (en) | Ear-back type Bluetooth hearing aid | |
| CN216086190U (en) | Battery management system with voice interaction function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |