CN219478127U - Earphone wired wireless switching microphone signal detection control circuit and earphone - Google Patents
Earphone wired wireless switching microphone signal detection control circuit and earphone Download PDFInfo
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- CN219478127U CN219478127U CN202320266672.1U CN202320266672U CN219478127U CN 219478127 U CN219478127 U CN 219478127U CN 202320266672 U CN202320266672 U CN 202320266672U CN 219478127 U CN219478127 U CN 219478127U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The utility model relates to the technical field of earphone microphone control, in particular to an earphone wired and wireless switching microphone signal detection control circuit and an earphone. The wireless communication system comprises a microphone, a connecting male head, a wireless main control chip and a switching control module; the signal input port of the wireless main control chip is connected with the input end of the microphone through the first MOS tube, and the bias voltage output port is connected with the input end of the microphone through the second MOS tube; the input end of the microphone is also connected with a first end pin of the connecting male head, and the connecting male head also comprises a second end pin which is connected with the socket in a short circuit mode with the first end pin; the switching control module comprises a switching control tube, a control end of the switching control tube is connected with a second end pin on the connecting male head, an output end of the switching control tube is grounded, and an input end of the switching control tube is connected with grid electrodes of the first MOS tube and the second MOS tube respectively. The utility model solves the problem that the earphone microphone is not detected easily when the earphone access mode is switched, enhances the reliability of the dual-purpose earphone and increases the use experience of users.
Description
Technical Field
The utility model relates to the technical field of earphone microphone control, in particular to an earphone wired and wireless switching microphone signal detection control circuit and an earphone.
Background
At present, the earphone with wired and wireless functions is popular in the market, and is popular with users. In the wired and wireless dual-purpose earphone, when the wireless connection is used and the wireless connection is switched to the wired connection, the problem that the earphone microphone cannot be identified by the inserting equipment easily occurs. For example, when a 3.5mm wired/wireless dual-purpose headset is plugged into an apple computer, the microphone of the external headset is easily undetectable. The main reason is that the microphone signal of the wireless main control chip and the bias voltage of the microphone are combined together and exceed the range of the detection current (200-500 uA) of the work of the microphone of the apple computer, and the detection current is required to be within the required range, so that the problem that the wired signal transmission of the microphone of the earphone cannot be realized easily in the process of inserting the earphone into the computer is solved, and the use experience of a user is influenced.
Disclosure of Invention
The utility model provides a wireless and wired switching microphone signal detection control circuit of an earphone and the earphone, which are used for solving the technical problem that a microphone of the earphone is easy to detect on an access device when the wireless and wired connection of the traditional wireless and wired two-purpose earphone is switched.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
a wireless switching microphone signal detection control circuit of earphone wire comprises a microphone, a connecting male head, a wireless main control chip and a switching control module; the wireless main control chip comprises a signal input port and a bias voltage output port, wherein the signal input port of the wireless main control chip is connected with the input end of the microphone through a first MOS tube, and the bias voltage output port is connected with the input end of the microphone through a second MOS tube; the input end of the microphone is also connected with a first end pin of the connecting male head, and the connecting male head also comprises a second end pin which is connected with the socket in a short circuit mode with the first end pin; the switching control module comprises a switch control tube, the control end of the switch control tube is connected with a second end pin on the connecting male head, the output end of the switch control tube is grounded, and the input end of the switch control tube is connected with the grid electrodes of the first MOS tube and the second MOS tube respectively.
Further, the switch control tube is a first triode, the base electrode of the first triode is connected with the second end pin of the connecting male head, the collector electrode is grounded, and the emitter electrode is respectively connected with the grid electrodes of the first MOS tube and the second MOS tube.
Further, the first triode is an NPN triode.
Further, the first MOS tube is an NMOS tube.
Further, the second MOS tube is an NMOS tube.
Further, the bias voltage port of the wireless main control chip is also connected with the grid electrodes of the first MOS tube and the second MOS tube.
Furthermore, a filter capacitor is further arranged between the signal input port and the first MOS tube.
Further, the grid electrode and the source electrode of the first MOS tube are connected in series through a first resistor.
Further, a first current limiting resistor is arranged between the grid electrode of the first MOS tube and the input end of the switch control tube, and a second current limiting resistor is also arranged between the grid electrode of the second MOS tube and the input end of the switch control tube.
The utility model also provides an earphone which comprises a wired connection module, a wireless connection module and a microphone, wherein the wired connection module and the wireless connection module are respectively connected with the microphone, and the connection male head of the wired connection module, the wireless main control chip of the wireless connection module and the microphone are connected through the earphone wired and wireless switching microphone signal detection control circuit.
According to the utility model, the switching control module is arranged between the connection male head for wired connection and the wireless master control chip for wireless connection, and in the process of switching the wireless connection into wired connection, the communication between the microphone and the wireless master control chip is turned off, so that the bias voltage output by the wireless master control chip can not influence the detection of the access equipment, the problem that the earphone microphone is not detected easily when the earphone access mode is switched is solved, the reliability of the dual-purpose earphone is enhanced, and the use experience of a user is increased.
Drawings
Fig. 1 is a block diagram of a circuit for detecting and controlling signals of a microphone in a wired and wireless manner in a tympanic machine according to an embodiment of the present utility model.
Fig. 2 is a circuit configuration diagram of a microphone signal detection control circuit for wired and wireless switching of a tympanic machine according to an embodiment of the present utility model.
Fig. 3 is a block diagram of a switching control module in a detection control circuit according to an embodiment of the present utility model.
Wherein:
the microphone is 10, the connecting male head is 20, the wireless main control chip is 30, the switching control module is 40, and the access equipment is 50;
the first MOS tube is Q1, the second MOS tube is Q2, the first triode is Q3, the filter capacitor is C1, the first resistor is R1, the first current limiting resistor is R2, and the second current limiting resistor is R3.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The described embodiments are some, but not all, embodiments of the utility model.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.
Example 1
Fig. 1 shows a block diagram of the configuration of a microphone signal detection control circuit for wired and wireless switching of a headset in this embodiment. Fig. 2 shows a circuit configuration diagram of the earphone wired/wireless switching microphone signal detection control circuit.
Referring to fig. 1-2, the present embodiment provides a control circuit for detecting a microphone signal of a wireless and wired switching earphone, which is mainly used for solving the problem that when a wireless and wired earphone is switched to a wired connection, the microphone 10 of the earphone cannot be recognized by an access device 50 due to the bias voltage of the wireless main control chip 30. This problem is mainly because the socket of the access device 50 generally recognizes and detects the microphone 10 of the headset by detecting the current after the socket is connected to the headset, and the current signal given to the socket by the microphone 10 of the headset exceeds the range of the detected current in which the microphone 10 works due to the bias voltage of the wireless main control chip 30 and the influence of the signal of the microphone 10, which eventually results in a problem that the detection cannot be performed. For example, in an apple computer, the range of the detected current of the microphone 10 is 200 to 500uA, and when the wired and wireless dual-purpose earphone is in a wireless connection state, the wireless main control chip 30 gives the microphone 10 signal and bias voltage to the microphone 10, so that the current signal given to the socket by the microphone 10 exceeds 500uA, and finally the microphone 10 cannot be detected and identified.
Therefore, the earphone wired wireless switching microphone signal detection control circuit provided in this embodiment turns off the connection between the wireless main control chip 30 and the microphone 10 through the switching control module 40 when the earphone is connected to the socket through the connection male head 20, that is, when the earphone is connected to the wired connection, the influence of the wireless main control chip 30 on the microphone 10 is shielded, so that the problem that the microphone 10 cannot be detected and identified easily when the two-purpose earphone is switched is solved, and the reliability of the two-purpose earphone is improved.
In a specific structural aspect, the earphone wired and wireless switching microphone signal detection control circuit of the present embodiment includes a microphone 10, a connection male head 20, a wireless main control chip 30 and a switching control module 40, where the microphone 10, that is, the microphone, is disposed in the earphone, and is mainly used for collecting externally input sound, converting the externally input sound into an electrical signal, and outputting the electrical signal to an inserting device through the connection male head 20 or the wireless main control chip 30, so as to collect external sound by the inserting device. The male connector 20 is configured to interface with a socket of the access device 50, and is shaped and sized to mate with a corresponding socket, so as to electrically connect components within the headset to the access device 50 when the socket is accessed. The wireless main control chip 30 is used for realizing wireless connection between the earphone and the access device 50, and a wireless connection module can be arranged in the wireless main control chip to perform wireless signal transmission with the access device 50. For example, a bluetooth module is disposed in the wireless main control chip 30 and is wirelessly connected with the access device 50 through the bluetooth module, and a signal input port and a bias voltage output port of the wireless main control chip 30 are respectively connected with an input end of the microphone 10 of the earphone, so as to obtain an audio signal collected by the microphone 10, and finally send and output the audio signal to the access device 50. Meanwhile, the wireless main control chip 30 can also receive the audio signal sent by the access device 50, so as to realize the playing function of the earphone.
More specifically, the wireless main control chip 30 includes a signal input port and a bias voltage output port, the signal input port of the wireless main control chip 30 is connected with the input end of the microphone 10 through the first MOS transistor Q1, and the bias voltage output port is connected with the input end of the microphone 10 through the second MOS transistor Q2. The ports of the wireless master control chip 30 are connected with the input end of the microphone 10 through the first MOS transistor Q1 and the second MOS transistor Q2, and mainly utilize the functions of the first MOS transistor Q1 and the second MOS transistor Q2 as switching transistors, it can be understood that the ports of the wireless master control chip 30 and the input end of the microphone 10 are connected with the source electrode and the drain electrode of the first MOS transistor Q1 and the source electrode of the second MOS transistor Q2, that is, the ports of the wireless master control chip 30 and the input end of the microphone 10 are connected with the two ends of the MOS transistors respectively, and the on/off between the ports of the wireless master control chip 30 and the input end of the microphone 10 is controlled by the level signals at the grid electrode of the first MOS transistor Q1 and the grid electrode of the second MOS transistor Q2.
Meanwhile, the input end of the microphone 10 is further connected with a first end pin of the connection male head 20, the connection male head 20 further comprises a second end pin which is connected with the first end pin in a short circuit mode after being connected with a socket, the switching control module 40 comprises a switch control tube, the control end of the switch control tube is connected with the second end pin on the connection male head 20, the output end of the switch control tube is grounded, and the input end of the switch control tube is connected with the grid electrodes of the first MOS tube Q1 and the second MOS tube Q2 respectively. The microphone 10 is electrically connected to the access device 50 through a first terminal pin and a socket, and the second terminal pin is used for controlling the level signals of the gates of the first MOS transistor Q1 and the second MOS transistor Q2 through a switch control tube when the male connector 20 is connected to the socket, so as to finally achieve the purpose of switching off the connection between the port of the wireless main control chip 30 and the input end of the microphone 10.
Through the above design, during wireless connection, the connection male head 20 is not connected to the socket of the access device 50, at this time, the first MOS transistor Q1 and the second MOS transistor Q2 are in a conducting state, the microphone 10 is connected to the signal input port and the bias voltage output port of the wireless main control chip 30, and is wirelessly connected to the access device 50 through the wireless main control chip 30, so that the collected sound is output to the access device 50 through the audio signal. When the earphone is switched to be connected in a preferential mode, the connection male head 20 is inserted into a socket of the access equipment 50, at the moment, the first end pin and the second end pin of the connection male head 20 are in short circuit, the control end of the switch control tube is high level, the grid electrodes of the first MOS tube Q1 and the second MOS tube Q2 are pulled down, the connection between the wireless main control chip 30 and the microphone 10 is disconnected in a mode of switching off the first MOS tube Q1 and the second MOS tube Q2, and finally, the current of the microphone 10 during the access is in the detection current range of the access equipment 50, so that the problem that detection cannot be achieved is solved.
The advantage of this embodiment is that, by arranging a switching control module 40 between the connection male head 20 for wired connection and the wireless master control chip 30 for wireless connection, in the process of switching the wireless connection into wired connection, the communication between the microphone 10 and the wireless master control chip 30 is turned off, so that the bias voltage output by the wireless master control chip 30 can not affect the detection of the access device 50, thereby solving the problem that the earphone microphone 10 is not detected easily when the earphone access mode is switched, enhancing the reliability of the dual-purpose earphone and increasing the use experience of users.
Example two
The present embodiment also provides a circuit for detecting and controlling the earphone wired and wireless switching microphone signal, specifically, the circuit includes a microphone 10, a connection male head 20, a wireless main control chip 30 and a switching control module 40. The wireless main control chip 30 comprises a signal input port and a bias voltage output port, the signal input port of the wireless main control chip 30 is connected with the input end of the microphone 10 through the first MOS tube Q1, and the bias voltage output port is connected with the input end of the microphone 10 through the second MOS tube Q2. The input end of the microphone 10 is further connected to a first terminal pin of the connection male head 20, and the connection male head 20 further comprises a second terminal pin which is short-circuited with the first terminal pin after being connected to the socket. The switching control module 40 includes a switch control tube, a control end of the switch control tube is connected to a second end pin on the connection male head 20, an output end of the switch control tube is grounded, and input ends of the switch control tube are respectively connected to gates of the first MOS tube Q1 and the second MOS tube Q2.
Specifically, the difference between the present embodiment and the first embodiment is that some specific implementations are provided in the present embodiment.
Fig. 3 is an enlarged view showing the configuration of the switching control module in the detection control circuit in the present embodiment. Referring to fig. 3, as a preferred embodiment, the switch control tube is a first triode Q3, wherein a base electrode of the first triode Q3 is connected to a second terminal pin connected to the male terminal 20, a collector electrode is grounded, and an emitter electrode is connected to gates of the first MOS tube Q1 and the second MOS tube Q2 respectively.
More specifically, a specific embodiment is provided, where the first triode Q3 is an NPN triode, the first MOS tube Q1 is an NMOS tube, the second MOS tube Q2 is an NMOS tube, and the bias voltage port of the wireless master control chip 30 is further connected to the gates of the first MOS tube Q1 and the second MOS tube Q2. When in wireless connection, the first terminal pin and the second terminal pin on the connection male head 20 are separated, at this time, the base electrode of the first triode Q3 in the switching control module 40 has no voltage input, the first triode Q3 is in a cut-off state, the grid electrodes of the first MOS tube Q1 and the second MOS tube Q2 are in a high level due to the connection with the port of the wireless main control chip 30, the first MOS tube Q1 and the second MOS tube Q2 are in a conduction state, and the port of the wireless main control chip 30 is connected with the microphone 10. When the earphone is switched to be in wired connection, the first terminal pin and the second terminal pin of the connection male head 20 are in short circuit, at this time, the base electrode of the first triode Q3 is in high level, the first triode Q3 is conducted, the grid electrodes of the first MOS tube Q1 and the second MOS tube Q2 are pulled down, the first MOS tube Q1 and the second MOS tube Q2 are in an off state, and the port of the wireless main control chip 30 and the input end of the microphone 10 are in an off state.
More preferably, in this embodiment, a filter capacitor C1 is further disposed between the signal input port and the first MOS transistor Q1. The grid electrode and the source electrode of the first MOS tube Q1 are connected in series through a first resistor R1. A first current limiting resistor R2 is arranged between the grid of the first MOS tube Q1 and the input end of the switch control tube, and a second current limiting resistor R3 is also arranged between the grid of the second MOS tube Q2 and the input end of the switch control tube. Preferably, the wireless master control chip 30 in this embodiment adopts an RTL8763 chip.
Example III
The present embodiment provides an earphone, which includes a wired connection module, a wireless connection module and a microphone 10, where the wired connection module and the wireless connection module are respectively connected with the microphone 10, and a connection male head 20 of the wired connection module, a wireless main control chip 30 of the wireless connection module, and the microphone 10 are connected through an earphone wired wireless switching microphone signal detection control circuit in the first embodiment or the second embodiment.
As can be seen from the technical solutions of the above embodiments, the present utility model provides a running machine suitable for home exercise,
in the description of the present utility model, it should be understood that the terms "orientation" or "positional relationship" are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the utility model.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature may include first and second features directly contacting each other, either above or below a second feature, or through additional features contacting each other, rather than directly contacting each other. Moreover, the first feature being above, over, and on the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being below, beneath, and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is less level than the second feature.
While the utility model has been described in conjunction with the specific embodiments above, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, all such alternatives, modifications, and variations are included within the spirit and scope of the following claims.
Claims (10)
1. The earphone wired and wireless switching microphone signal detection control circuit is characterized by comprising a microphone, a connecting male head, a wireless main control chip and a switching control module; the wireless main control chip comprises a signal input port and a bias voltage output port, wherein the signal input port of the wireless main control chip is connected with the input end of the microphone through a first MOS tube, and the bias voltage output port is connected with the input end of the microphone through a second MOS tube; the input end of the microphone is also connected with a first end pin of the connecting male head, and the connecting male head also comprises a second end pin which is connected with the socket in a short circuit mode with the first end pin; the switching control module comprises a switch control tube, the control end of the switch control tube is connected with a second end pin on the connecting male head, the output end of the switch control tube is grounded, and the input end of the switch control tube is connected with the grid electrodes of the first MOS tube and the second MOS tube respectively.
2. The earphone wired and wireless switching microphone signal detection control circuit according to claim 1, wherein the switch control tube is a first triode, a base electrode of the first triode is connected with a second terminal pin of the connecting male head, a collector electrode of the first triode is grounded, and an emitter electrode of the first triode is connected with grid electrodes of the first MOS tube and the second MOS tube respectively.
3. The earphone wired and wireless switching microphone signal detection control circuit according to claim 2, wherein the first triode is an NPN triode.
4. The earphone wired/wireless switching microphone signal detection control circuit according to any one of claims 1 to 3, wherein the first MOS transistor is an NMOS transistor.
5. The earphone wired/wireless switching microphone signal detection control circuit according to any one of claims 1 to 3, wherein the second MOS transistor is an NMOS transistor.
6. The earphone wired wireless switching microphone signal detection control circuit according to claim 1, wherein the bias voltage port of the wireless master control chip is further connected with the gates of the first MOS transistor and the second MOS transistor.
7. The earphone wired and wireless switching microphone signal detection control circuit according to claim 1, wherein a filter capacitor is further arranged between the signal input port and the first MOS transistor.
8. The earphone wired and wireless switching microphone signal detection control circuit according to claim 1, wherein the gate and the source of the first MOS transistor are connected in series through a first resistor.
9. The earphone wired and wireless switching microphone signal detection control circuit according to claim 1, wherein a first current limiting resistor is arranged between the grid electrode of the first MOS tube and the input end of the switch control tube, and a second current limiting resistor is also arranged between the grid electrode of the second MOS tube and the input end of the switch control tube.
10. The earphone is characterized by comprising a wired connection module, a wireless connection module and a microphone, wherein the wired connection module and the wireless connection module are respectively connected with the microphone, and a connection male head of the wired connection module, a wireless main control chip of the wireless connection module and the microphone are connected through the earphone wired wireless switching microphone signal detection control circuit according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320266672.1U CN219478127U (en) | 2023-02-20 | 2023-02-20 | Earphone wired wireless switching microphone signal detection control circuit and earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320266672.1U CN219478127U (en) | 2023-02-20 | 2023-02-20 | Earphone wired wireless switching microphone signal detection control circuit and earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219478127U true CN219478127U (en) | 2023-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320266672.1U Active CN219478127U (en) | 2023-02-20 | 2023-02-20 | Earphone wired wireless switching microphone signal detection control circuit and earphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219478127U (en) |
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2023
- 2023-02-20 CN CN202320266672.1U patent/CN219478127U/en active Active
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