CN219041947U - Headset startup and shutdown circuit and headset - Google Patents
Headset startup and shutdown circuit and headset Download PDFInfo
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- CN219041947U CN219041947U CN202223247088.6U CN202223247088U CN219041947U CN 219041947 U CN219041947 U CN 219041947U CN 202223247088 U CN202223247088 U CN 202223247088U CN 219041947 U CN219041947 U CN 219041947U
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Abstract
The embodiment of the application provides a switching-on and switching-off circuit and headphone of headphone, and headphone is provided with the head beam, and the head beam has initial state and tensile state, and switching-on and switching-off circuit includes: force sensor, comparator, bleeder circuit and microcontroller. The comparator comprises a first positive end, a first negative end and a first output end, wherein the first positive end of the comparator is electrically connected with the force sensor and is used for receiving a first voltage value or a second voltage value, and the first negative end of the comparator is used for receiving a preset voltage value; the voltage dividing circuit is electrically connected with the first negative terminal; the microcontroller is respectively and electrically connected with the comparator and the force sensor, and is switched into a working state from a sleep state when receiving the high level output by the first output end of the comparator so as to receive the first voltage value and control the headphone to work when the head beam is in a stretching state. Through the setting of this application, provide a power consumption less headphone's switching on and shutting down circuit and headphone.
Description
Technical Field
The application relates to the technical field of earphone sensing circuits, in particular to a switching circuit of a headset and the headset.
Background
Infrared sensors and capacitive sensors are commonly used as headset sensing modules. In headphones, an infrared sensor is usually provided in the headphone head, and when the ear is within 3mm from the infrared sensor, a detection signal is triggered to detect that the headphone is worn; when the ear is more than 10mm from the infrared sensor, the detection is off-hook. The infrared sensor is used as a headset sensing module with higher accuracy, but the assembly difficulty is high, and the cost is relatively high. The capacitance sensor detects and wears by utilizing the change of the capacitance after wearing, and when the headset touches metal, the change of the capacitance can lead the headset to be misjudged to be worn, so that the misoperation rate is higher.
In the related art, a force sensor is generally used as a sensing module of a headset because the force sensor generates a resistance change when being compressed by an external force, and has a high resistance when no force is applied.
However, when using a force sensor as a sensing module, in the headset in the prior art, the force sensor is usually directly connected to the micro controller in the circuit construction, and the micro controller needs to always detect the output voltage of the force sensor, so that the power consumption of the micro controller is relatively high.
Disclosure of Invention
By the arrangement of the circuit, when the head beam of the headset is in an initial state, the microcontroller is in a sleep state, and the microcontroller is not required to be in an on state all the time; when the headset is in a stretched state, the force sensor can transmit voltage to the microcontroller and wake the microcontroller, the microcontroller is not required to be in an on state all the time, and power consumption of the microcontroller is reduced.
The embodiment of the application provides a switch circuit of headphone, headphone is provided with the head roof beam, and the head roof beam sets up to semi-annular structure, and two open ends of semi-annular structure are provided with the earphone head, and the head roof beam has initial state and tensile state, and when the head roof beam did not exert external force, the head roof beam was in initial state, and when tensile head roof beam made the horizontal distance between two earphone heads surpass the default distance, the head roof beam was in tensile state, switch circuit includes:
a force sensor;
a comparator, the comparator having:
the first positive end is electrically connected with the force sensor, is used for receiving the first voltage value or the second voltage value and is used for outputting the first voltage value; a first negative terminal for receiving a preset voltage value, and a first output terminal; the first voltage value is a voltage value output by the force sensor when the head beam is in a stretching state, the first voltage value is larger than a preset voltage value, the second voltage value is a voltage value output by the force sensor when the head beam is in an initial state, and the second voltage value is smaller than the preset voltage value;
the voltage dividing circuit is electrically connected with the first negative terminal and outputs a preset voltage value to the first negative terminal;
the first interface of the microcontroller is electrically connected with the force sensor, the second interface of the microcontroller is electrically connected with the first output end, and the microcontroller is switched into a working state from a sleep state when receiving the high level output by the first output end of the comparator so as to receive the first voltage value and control the headphone to work when the head beam is in a stretching state.
In one possible implementation, the voltage dividing circuit includes a first MOS transistor, and an output end of the first MOS transistor is electrically connected to a first negative terminal of the comparator to output a preset voltage value to the first negative terminal of the comparator.
In one possible implementation manner, the voltage dividing circuit further includes a first voltage dividing resistor, one end of the first voltage dividing resistor is electrically connected with the first negative end of the comparator, and the other end of the first voltage dividing resistor is electrically connected with the output end of the first MOS tube.
In one possible implementation manner, the voltage dividing circuit further includes a pull-down resistor, the input end of the first MOS transistor is connected in series with the pull-down resistor, the pull-down resistor is grounded, and the pull-down resistor is used for stabilizing voltage.
In one possible implementation mode, the voltage dividing circuit further comprises a second MOS tube, the second MOS tube and the first MOS tube are mutually connected in series, and a first negative end of the comparator is connected to a series circuit between the first MOS tube and the second MOS tube.
In one possible implementation manner, the voltage dividing circuit further comprises a second voltage dividing resistor, and the second voltage dividing resistor and the second MOS tube are connected in series.
In one possible implementation, the second MOS transistor is connected to the microcontroller.
In a possible implementation, the device further includes an amplifier, the amplifier includes a second positive terminal, a second negative terminal, and a second output terminal, the second positive terminal of the amplifier is electrically connected to the output terminal of the force sensor, the output terminal of the amplifier is electrically connected to the first positive terminal of the comparator, and the second negative terminal of the amplifier is connected in series to the compensation resistor.
The embodiment of the application also provides a headset, and the headset comprises a switching circuit of the headset.
The embodiment of the application provides a startup and shutdown circuit of a headset, wherein the headset is provided with an initial state and a stretching state, when the headset is in the initial state, a microcontroller is in a sleep state, a force sensor outputs a second voltage value to a first positive end of a comparator, a voltage dividing circuit outputs a preset voltage value to a first negative end of the comparator, so that the first negative end of the comparator keeps a stable voltage, and as the second voltage value is lower than the preset voltage value of the first negative end of the comparator, the comparator outputs a low level, the microcontroller keeps the sleep state, and the second voltage value is not transmitted to the microcontroller; when the head beam is in a stretching state, the force sensor outputs a first voltage value to the first positive end of the comparator, and as the first voltage value is higher than a preset voltage value of the first negative end of the Yu Bijiao device, the comparator outputs a high level to the second interface of the microcontroller to wake up the microcontroller, and the first voltage value of the force sensor is output to the microcontroller. Compared with the prior art, when the head beam is in the initial state, the force sensor directly conveys the second voltage value to the microcontroller, and the microcontroller is required to be in the open state all the time. Through the setting of this application, provide a power consumption less headphone's switch-on circuit.
The embodiment of the application also provides a headset, by arranging the force sensor on the head beam, when the head beam is in an initial state, the microcontroller is in a sleep state, the second voltage value of the force sensor is not transmitted to the microcontroller, and the microcontroller can keep the sleep state; when the head beam is in a stretching state, the force sensor outputs a first voltage value to the microcontroller so as to wake the microcontroller, on one hand, the microcontroller is not required to be in an opening state all the time, and the power consumption of the microcontroller is reduced; on the other hand, manual keys are not needed, and the probability of false touch is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
FIG. 1 is a circuit diagram of a headset according to one embodiment of the present application;
fig. 2 is a circuit diagram of a headset according to an embodiment of the present application.
Reference numerals illustrate:
1-a force sensor;
a 2-comparator;
3-a voltage dividing circuit; 301-a first MOS tube; 302-a second MOS tube; 303-a first voltage dividing resistor; 304-a second voltage divider resistor; 305-pull-down resistor;
a 4-amplifier;
5-a microcontroller.
Detailed Description
In order to better understand the technical solutions in the present application, the following description will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than as described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.
In the description of the present application, it should be understood that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium.
In the present application, unless explicitly specified and limited otherwise, the terms "coupled," "connected," and the like are to be construed broadly, and may be fixedly attached, detachably attached, or integrally formed, for example; 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. However, it is noted that a direct connection indicates that two bodies connected together do not form a connection relationship by an excessive structure, but are connected to form a whole by a connection structure. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
The description herein as relating to "first," "second," etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance thereof or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
In the related art, since the force sensor 1 generates a resistance change when compressed by an external force, the force sensor 1 has a high resistance when no force is applied, and thus the force sensor 1 is generally used as a sensing module of a headset.
However, when using the force sensor 1 as a sensing module, in the headset of the prior art, in the circuit construction, the force sensor 1 is usually directly connected to the micro controller 5, and the micro controller 5 needs to always detect the output voltage of the force sensor 1, so that the power consumption of the micro controller 5 is relatively large.
Therefore, the application provides a switching circuit of the headset, so as to solve the technical problem that the switching circuit of the headset in the existing market has larger power consumption.
The embodiment of the application provides a switch circuit of headphone, headphone is provided with the head roof beam, and the head roof beam sets up to semi-annular structure, and two open ends of semi-annular structure are provided with the earphone head, and the head roof beam has initial state and tensile state, and when the head roof beam did not exert external force, the head roof beam was in initial state, and when tensile head roof beam made the horizontal distance between two earphone heads surpass the default distance, the head roof beam was in tensile state, referring to fig. 1, switch circuit includes: a force sensor 1, a comparator 2, a voltage dividing circuit 3 and a microcontroller 5. The comparator 2 is provided with a first positive end, a first negative end and a first output end, the first positive end is electrically connected with the force sensor 1 to receive a first voltage value or a second voltage value, and the first positive end is used for outputting the first positive end of the first voltage value; the first negative terminal is used for receiving a preset voltage value; the first voltage value is a voltage value output by the force sensor 1 when the head beam is in a stretching state, the first voltage value is larger than a preset voltage value, the second voltage value is a voltage value output by the force sensor 1 when the head beam is in an initial state, and the second voltage value is smaller than the preset voltage value; the voltage dividing circuit 3 is electrically connected with the first negative terminal, and the voltage dividing circuit 3 outputs a preset voltage value to the first negative terminal; the first interface of the microcontroller 5 is electrically connected with the force sensor 1, the second interface of the microcontroller 5 is electrically connected with the first output end, and when the microcontroller 5 receives the high level output by the first output end of the comparator 2, the microcontroller is converted from the sleep state to the working state so as to receive the first voltage value and control the headphone to work when the head beam is in the stretching state.
In a specific implementation, the voltage dividing circuit 3 is turned on, the voltage dividing circuit 3 outputs a preset voltage value to the first negative end of the comparator 2 to stabilize the voltage, when the head beam is in an initial state, the microcontroller 5 is in a sleep state, the force sensor 1 outputs a second voltage value to the first positive end of the comparator 2, the comparator 2 outputs a low level because the second voltage value is smaller than the preset voltage value, the microcontroller 5 keeps the sleep state, and the second voltage value is not output to the microcontroller 5; when the head beam is in a stretching state, the force sensor 1 outputs a first voltage value to a first positive end of the comparator 2, and as the first voltage value is larger than a preset voltage value, the comparator 2 outputs a high level to a second interface of the microcontroller 5 to wake the microcontroller 5, and the first voltage value of the force sensor 1 is output to the microcontroller 5 through the first interface, and the microcontroller 5 controls the headset to work; when the head beam is converted from the stretching state to the initial state, the microcontroller 5 detects a second voltage value output by the force sensor 1, the microcontroller 5 is provided with another preset voltage value, and when the second voltage value is lower than the other preset voltage value of the microcontroller 5 within 10S, the microcontroller 5 is converted to the sleep state.
From the above description, it can be seen that the following technical effects are achieved:
the embodiment of the application provides a startup and shutdown circuit of a headset, wherein the headset has an initial state and a stretching state, when the headset is in the initial state, a microcontroller 5 is in a sleep state, a force sensor 1 outputs a second voltage value to a first positive end of a comparator 2, a voltage dividing circuit 3 outputs a preset voltage value to a first negative end of the comparator 2, and since the second voltage value is lower than the preset voltage value of the first negative end of the comparator 2, the comparator 2 outputs a low level, the microcontroller 5 keeps the sleep state, and the second voltage value is not output to the microcontroller 5; when the head beam is in a stretching state, the force sensor 1 outputs a first voltage value to the first positive end of the comparator 2, and since the first voltage value is higher than a preset voltage value of the first negative end of the Yu Bijiao device 2, the comparator 2 outputs a high level to the second interface of the microcontroller 5 to wake up the microcontroller 5, and the first voltage value of the force sensor 1 is output to the microcontroller 5 and wakes up the microcontroller 5. Compared with the prior art, when the head beam is in the initial state, the force sensor 1 directly conveys the second voltage value to the microcontroller 5, and the microcontroller 5 is required to be always in the on state, through the setting of the application, when the head beam is in the initial state, the second voltage value of the force sensor 1 is not conveyed to the microcontroller 5, and the microcontroller 5 is not required to be always in the on state, so that the power consumption of the microcontroller 5 is reduced. Through the setting of this application, provide a power consumption less headphone's switch-on circuit.
In some examples, referring to fig. 1, the voltage divider circuit 3 includes a first MOS transistor 301, and an output terminal of the first MOS transistor 301 is electrically connected to a first negative terminal of the comparator 2 to output a preset voltage value to the first negative terminal of the comparator 2. According to the method, the output end of the first MOS tube 301 is connected with the first negative end of the comparator 2, when the head beam is in the initial state, the voltage value output by the force sensor 1 is the second voltage value, the second MOS tube 301 outputs the preset voltage value stable voltage to the first negative end of the comparator 2, and the second voltage value is not conveyed to the microcontroller at the moment because the second voltage value is smaller than the preset voltage value, and the microcontroller keeps the sleep state.
Illustratively, with continued reference to fig. 1, the voltage dividing circuit 3 further includes a first voltage dividing resistor 303, one end of the first voltage dividing resistor 303 is electrically connected to the first negative terminal of the comparator 2, and the other end of the first voltage dividing resistor 303 is electrically connected to the output terminal of the first MOS transistor 301. By means of the arrangement of the first voltage dividing resistor 303, when the voltage dividing circuit 3 is opened, the first voltage dividing resistor 303 can play a role in voltage division so as to play a role in stabilizing voltage.
Illustratively, with continued reference to fig. 1, the voltage divider circuit 3 further includes a pull-down resistor 305, the input terminal of the first MOS transistor 301 is connected in series with the pull-down resistor 305, the pull-down resistor 305 is grounded, and the pull-down resistor 305 is used for stabilizing the voltage. The pull-down resistor 305 can further stabilize the voltage.
For example, referring to fig. 2, the voltage divider 3 further includes a second MOS transistor 302, where the second MOS transistor 302 and the first MOS transistor 301 are connected in series, and the first negative terminal of the comparator 2 is connected to a series circuit between the first MOS transistor 301 and the second MOS transistor 302. Of course, those skilled in the art will understand that the output end of the second MOS transistor 302 may also be provided with a pull-down resistor 305, where the pull-down resistor 305 is grounded.
Illustratively, with continued reference to fig. 2, the voltage divider circuit 3 further includes a second voltage divider resistor 304, where the second voltage divider resistor 304 and the second MOS transistor 302 are connected in series. In practice, the second voltage divider resistor 304 can perform a voltage dividing function to further stabilize the voltage.
Illustratively, referring to fig. 2, a second MOS transistor 302 is coupled to the microcontroller 5. Of course, those skilled in the art will understand that the second MOS tube 302 is connected to the microcontroller 5, and when the head beam is in a stretched state, the first voltage value is directly output to the microcontroller 5, and wakes up the microcontroller 5, and at this time, the microcontroller 5 can output a signal to the second MOS tube 302 to control the second MOS tube 302 to be turned on and off.
In some examples, referring to fig. 1-2, further comprising an amplifier 4, the amplifier 4 comprising a second positive terminal, a second negative terminal, and a second output terminal, the second positive terminal of the amplifier 4 being electrically connected to the output terminal of the force sensor 1, the output terminal of the amplifier 4 being connected to the first positive terminal of the comparator 2, the second negative terminal of the amplifier 4 being connected in series with a compensation resistor. The voltage value output by the force sensor 1 can be amplified through the arrangement of the amplifier 4, so that the comparator 2 can perform identification comparison.
The embodiment of the application also provides a headset, and the headset comprises a switching circuit of the headset.
The embodiment of the application also provides a headset, by arranging the force sensor 1 and arranging the force sensor 1 on the head beam, when the head beam is in an initial state, the microcontroller 5 is in a sleep state, the second voltage value of the force sensor 1 is not transmitted to the microcontroller, and the microcontroller can keep the sleep state; when the head beam is in a stretching state, the force sensor 1 outputs a second voltage value to the microcontroller 5 to wake up the microcontroller 5, on one hand, the microcontroller 5 is not required to be in an open state all the time, the power consumption of the microcontroller 5 is reduced, and on the other hand, a manual key is not required, and the probability of false touch is reduced.
It is to be understood that, based on the several embodiments provided in the present application, those skilled in the art may combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments, where none of the embodiments exceed the protection scope of the present application.
The foregoing detailed description of the embodiments of the present application has further described the objects, technical solutions and advantageous effects thereof, and it should be understood that the foregoing is merely a specific implementation of the embodiments of the present application, and is not intended to limit the scope of the embodiments of the present application, and any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the scope of the embodiments of the present application.
Claims (9)
1. A switching circuit of a headset provided with a head beam provided in a semi-annular structure having two open ends provided with earphone heads, the head beam having an initial state and a stretched state, the head beam being in the initial state when no external force is applied to the head beam, the head beam being in the stretched state when stretching the head beam so that a horizontal distance between two earphone heads exceeds a preset distance, the switching circuit comprising:
a force sensor;
a comparator, the comparator having:
the first positive end is electrically connected with the force sensor, is used for receiving a first voltage value or a second voltage value and is used for outputting the first voltage value; a first negative terminal for receiving a preset voltage value, and a first output terminal; the first voltage value is a voltage value output by the force sensor when the head beam is in the stretching state, the first voltage value is larger than the preset voltage value, the second voltage value is a voltage value output by the force sensor when the head beam is in the initial state, and the second voltage value is smaller than the preset voltage value;
the voltage dividing circuit is electrically connected with the first negative terminal and outputs the preset voltage value to the first negative terminal;
the first interface of the microcontroller is electrically connected with the force sensor, the second interface of the microcontroller is electrically connected with the first output end, and the microcontroller is switched from a sleep state to an operating state when receiving the high level output by the first output end of the comparator, so as to receive the first voltage value and control the headset to operate when the head beam is in the stretching state.
2. The headset switching circuit of claim 1, wherein the voltage divider circuit comprises a first MOS transistor, an output of the first MOS transistor being electrically connected to a first negative terminal of the comparator to output the preset voltage value to the first negative terminal of the comparator.
3. The headset switching circuit of claim 2, wherein the voltage divider circuit further comprises a first voltage divider resistor, one end of the first voltage divider resistor is electrically connected to the first negative terminal of the comparator, and the other end of the first voltage divider resistor is electrically connected to the output terminal of the first MOS transistor.
4. A switching circuit of a headset according to claim 3, wherein the voltage divider further comprises a pull-down resistor, the input terminal of the first MOS transistor is connected in series with the pull-down resistor, the pull-down resistor is grounded, and the pull-down resistor is used for stabilizing a voltage.
5. The headset switching circuit of claim 2, wherein the voltage divider circuit further comprises a second MOS transistor, the second MOS transistor and the first MOS transistor are serially connected to each other, and the first negative terminal of the comparator is connected to the serial circuit between the first MOS transistor and the second MOS transistor.
6. The headset switching circuit of claim 5, wherein the voltage divider circuit further comprises a second voltage divider resistor, the second voltage divider resistor and the second MOS transistor being connected in series.
7. The headset switching circuit of claim 6, wherein the second MOS transistor is electrically connected to the microcontroller.
8. The headset switching circuit of any of claims 1-7, further comprising an amplifier, the amplifier comprising a second positive terminal, a second negative terminal, and a second output terminal, the second positive terminal of the amplifier being electrically connected to the output terminal of the force sensor, the output terminal of the amplifier being electrically connected to the first positive terminal of the comparator, the second negative terminal of the amplifier being connected in series with a compensation resistor.
9. A headset comprising a switching circuit of a headset according to any of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223247088.6U CN219041947U (en) | 2022-12-05 | 2022-12-05 | Headset startup and shutdown circuit and headset |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223247088.6U CN219041947U (en) | 2022-12-05 | 2022-12-05 | Headset startup and shutdown circuit and headset |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219041947U true CN219041947U (en) | 2023-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223247088.6U Active CN219041947U (en) | 2022-12-05 | 2022-12-05 | Headset startup and shutdown circuit and headset |
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|---|---|
| CN (1) | CN219041947U (en) |
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2022
- 2022-12-05 CN CN202223247088.6U patent/CN219041947U/en active Active
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Effective date of registration: 20231206 Address after: 518109 No.48, Meibao Road, Dalang street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Merry Electronics(Shenzhen) Co.,Ltd. Address before: 266100 room 2402, block a, building 3, Hisense Chuangzhi Valley, No. 20 Zhuzhou Road, Laoshan District, Qingdao, Shandong Province Patentee before: Fuli Kangtai medical equipment (Xiamen) Co.,Ltd. Qingdao Branch |