CN212965810U - Detection circuit for earphone in-out bin - Google Patents
Detection circuit for earphone in-out bin Download PDFInfo
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- CN212965810U CN212965810U CN202022141914.3U CN202022141914U CN212965810U CN 212965810 U CN212965810 U CN 212965810U CN 202022141914 U CN202022141914 U CN 202022141914U CN 212965810 U CN212965810 U CN 212965810U
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Abstract
The utility model discloses an earphone discrepancy storehouse detection circuitry, it includes: the battery boosting module is connected with the battery and is provided with a charging output end for charging the earphone; the MCU main control module is connected with the battery boosting module; the current sampling module is used for detecting whether the earphone is placed in the charging bin or not and is connected with the charging output end; the current amplification conversion module is used for amplifying the signal detected by the current sampling module and is connected with the current sampling module, the MCU main control module and the battery boosting module; and the charging bin switch cover detection module is used for detecting whether the charging bin is in an open state or a closed state and is connected with the MCU main control module. The circuit of the utility model is very simple, and can realize the function of detecting the entrance and exit of the earphone, and does not need to add any device at the earphone end, thus reducing the design difficulty of the earphone, enhancing the experience of the user and being more comfortable to wear; meanwhile, the standby power consumption of the earphone when the earphone is not placed in the charging bin can be reduced, and the standby time is prolonged.
Description
The technical field is as follows:
the utility model relates to a storehouse technical field charges refers in particular to an earphone discrepancy storehouse detection circuitry.
Background art:
the Bluetooth earphone applies the Bluetooth technology to the hands-free earphone, so that users can avoid annoying wiring stumbling and can easily talk in various ways. Since the advent of bluetooth headsets, bluetooth headsets have been a good tool for improving efficiency of mobile commerce families, and bluetooth headsets are small-sized devices based on bluetooth technology, and free conversation can be realized only by hiding the light devices beside the headsets without directly using communication devices (mobile phones, computers and the like). The Bluetooth earphone applies the Bluetooth technology to the hands-free earphone, so that users can avoid annoying wiring stumbling and can easily talk in various ways. Since the advent of bluetooth headsets, it has been a good tool for the mobile commerce industry to increase efficiency.
General bluetooth headset all is equipped with the mouth that charges, need artifically to be connected the data line with the mouth that charges and charge, so not only the operation is comparatively loaded down with trivial details, excellent in use effect, since bluetooth headset came out, bluetooth headset's continuous renewal, the birth in bluetooth headset charging storehouse has been promoted, bluetooth headset charging storehouse is used for charging bluetooth headset simultaneously, its effect is also more and more important, and this charging storehouse not only can accept bluetooth headset, still can realize charging this bluetooth headset, it is very convenient to use.
Most bluetooth headset charging bins on the market at present mainly have following two kinds of detection schemes to going out to put in and out the storehouse:
1. charging bin is only put into to bluetooth headset and is detected, and does not detect going out of the warehouse, and MCU can't directly gather small signal variation, can't realize not having the function of going out of the warehouse to detect, and it is not convenient enough to use.
2. At the inside a plurality of hall devices that increase in the storehouse that charges, increase a plurality of magnetic device simultaneously on bluetooth headset to this realization comes in and goes out the storehouse and detects, and its case is with high costs, needs increase magnetic device on bluetooth headset moreover, leads to increasing bluetooth headset's weight and volume, and the comfort is worn in the reduction.
In view of the above, the present inventors propose the following.
The utility model has the following contents:
an object of the utility model is to overcome prior art's not enough, provide an earphone discrepancy storehouse detection circuitry.
In order to solve the technical problem, the utility model discloses a following technical scheme: this earphone discrepancy storehouse detection circuitry includes: the battery boosting module is connected with the battery and is provided with a charging output end for charging the earphone; the battery boosting module supplies power to the MCU main control module; the current sampling module is used for detecting whether the earphone is placed in the charging bin or not and is connected with the charging output end; the current amplification conversion module is used for amplifying the signal detected by the current sampling module and is connected with the current sampling module, the MCU main control module and the battery boosting module; and the charging bin switch cover detection module is used for detecting whether the charging bin is in an open state or a closed state and is connected with the MCU main control module.
Further, in the above technical solution, the current sampling module includes a sampling resistor R5 connected to the charging output terminal, and the sampling resistor R5 is grounded.
Further, in the above technical solution, the current amplification and conversion module includes an operational amplifier, a resistor R6 connected to a pin of the operational amplifier, a resistor R7 connected to a pin of the operational amplifier, a resistor R9 connected to a pin of the operational amplifier, and a resistor R8 connected between the pin of the operational amplifier and the pin of the operational amplifier, where the resistor R6 and the resistor R7 are respectively connected to two ends of the sampling resistor R5, and the resistor R9 is connected to the MCU main control module.
Further, in the above technical solution, the charging output terminal includes a +5V terminal and a negative terminal, the +5V terminal is connected to the battery boosting module, and the negative terminal is connected to the current sampling module.
Further, in the above technical solution, the MCU main control module includes a single chip microcomputer supporting the ADC port and the GPIO port.
Furthermore, in the above technical solution, the battery voltage boosting module includes a voltage boosting chip, and the voltage boosting chip is connected to the battery, the MCU main control module, and the charging output terminal.
Further, in the above technical solution, the charging bin switch cover detection module includes a hall element, and the hall element is connected to the MCU main control module.
After the technical scheme is adopted, compared with the prior art, the utility model has following beneficial effect: the circuit of the utility model is very simple, and can realize the function of detecting the entrance and exit of the earphone, and does not need to add any device at the earphone end, thus reducing the design difficulty of the earphone, enhancing the experience of the user and being more comfortable to wear; meanwhile, the standby power consumption of the earphone when the earphone is not placed in the charging bin can be reduced, and the standby time is prolonged.
Description of the drawings:
fig. 1 is a block diagram of the present invention;
fig. 2 is a circuit diagram of the present invention.
The specific implementation mode is as follows:
the present invention will be further described with reference to the following specific embodiments and accompanying drawings.
Referring to fig. 1-2, a circuit for detecting the entrance and exit of an earphone is disclosed, which comprises: a battery boosting module 1 connected to the battery 2, the battery boosting module 1 having a charging output terminal 11 for charging the earphone; the MCU main control module 3 is connected with the battery boosting module 1, and the battery boosting module 1 supplies power to the MCU main control module 3; the current sampling module 4 is used for detecting whether the earphone is placed in the charging bin or not and is connected with the charging output end 11; the current amplification conversion module 5 is used for amplifying the signal detected by the current sampling module 4 and is connected with the current sampling module 4, the MCU main control module 3 and the battery boosting module 1; and the charging bin switch cover detection module 6 is used for detecting whether the charging bin is in an open state or a closed state and is connected with the MCU main control module 3.
The utility model discloses the theory of operation does: the charging bin switch cover detection module 6 is used for detecting whether the charging bin is in an open state or a closed state, when the charging bin is detected to be in the closed state, the MCU main control module 3 is activated, the MCU main control module 3 controls the battery boosting module 1 to output 5V direct current, and meanwhile, the current amplification conversion module 5 is supplied with power; whether the current sampling module 4 detects the earphone and puts into the storehouse of charging, when the earphone put into the storehouse of charging and with the 11 contacts of charging output, current sampling module 4 can detect current signal to give current amplification conversion module 5 the signal that detects, current amplification conversion module 5 gives MCU host system 3 to the signal after the amplification, MCU host system 3 discerns the back and controls battery boost module 1 and continuously charges for the earphone. When the earphone is not put in after the cover is opened and then the cover is closed, or the cover is closed after the earphone is taken out, when the charging bin is detected to be in a closed state, the MCU main control module 3 is activated, the MCU main control module 3 controls the battery boosting module 1 to output 5V direct current, and meanwhile, the current amplification and conversion module 5 is supplied with power; after the cover is closed, because the earphone is not put into the charging bin, and when the earphone is not in contact with the charging output end 11, the current sampling module 4 can not collect current signals, no signal is sent to the current amplification conversion module 5, the current amplification conversion module 5 sends the current state to the MCU main control module 3, the battery boosting module 1 is turned off after the MCU main control module 3 identifies, meanwhile, the MCU main control module 3 enters an ultra-low power consumption mode, the energy consumption is saved, the standby time is prolonged, and the service life of the battery is prolonged. In summary, the circuit of the utility model is very simple, and can realize the function of detecting the entrance and exit of the earphone, and does not need to add any device at the earphone end, thereby reducing the design difficulty of the earphone, enhancing the experience of the user and making the wearing more comfortable; meanwhile, the standby power consumption of the earphone when the earphone is not placed in the charging bin can be reduced, and the standby time is prolonged.
The current sampling module 4 includes a sampling resistor R5 connected to the charging output terminal 11, and the sampling resistor R5 is grounded. The current amplification and conversion module 5 includes an operational amplifier 51, a resistor R6 connected to a pin of the operational amplifier 51, a resistor R7 connected to a pin of the operational amplifier 51, a resistor R9 connected to an out pin of the operational amplifier 51, and a resistor R8 connected between the pin of the operational amplifier 51 and the out pin, wherein the resistor R6 and the resistor R7 are respectively connected to two ends of the sampling resistor R5, and the resistor R9 is connected to the MCU main control module 3. The operational amplifier 51 is a low power consumption and low noise operational amplifier.
The charging output terminal 11 includes a +5V terminal 111 and a negative terminal 112, the +5V terminal 111 is connected to the battery voltage boosting module 1, and the negative terminal 112 is connected to the current sampling module 4.
The MCU main control module 3 comprises a singlechip 31 supporting an ADC port and a GPIO port.
The battery boosting module 1 comprises a boosting chip 12, and the boosting chip 12 is connected with the battery 2, the MCU main control module 3 and the charging output end 11.
The charging bin switch cover detection module 6 comprises a Hall element 61, and the Hall element 61 is connected with the MCU main control module 3. The hall element 61 may also be replaced with a limit switch.
In summary, the circuit of the utility model is very simple, and can realize the function of detecting the entrance and exit of the earphone, and does not need to add any device at the earphone end, thereby reducing the design difficulty of the earphone, enhancing the experience of the user and making the wearing more comfortable; meanwhile, the standby power consumption of the earphone when the earphone is not placed in the charging bin can be reduced, and the standby time is prolonged.
Of course, the above description is only an exemplary embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes and modifications made by the constructions, features, and principles of the present invention in accordance with the claims of the present invention are intended to be included in the scope of the present invention.
Claims (7)
1. The utility model provides an earphone discrepancy storehouse detection circuitry which characterized in that: it includes:
a battery boost module (1) connected to the battery (2), the battery boost module (1) having a charging output (11) for charging the headset;
the battery boosting module (1) supplies power to the MCU main control module (3);
the current sampling module (4) is used for detecting whether the earphone is placed in the charging bin or not and is connected with the charging output end (11);
the current amplification conversion module (5) is used for amplifying the signal detected by the current sampling module (4) and is connected with the current sampling module (4), the MCU main control module (3) and the battery boosting module (1);
and the charging bin switch cover detection module (6) is used for detecting whether the charging bin is in an open state or a closed state and is connected with the MCU main control module (3).
2. The circuit for detecting the entry and exit of an earphone to/from a storage of claim 1, wherein: the current sampling module (4) comprises a sampling resistor R5 connected with the charging output end (11), and the sampling resistor R5 is grounded.
3. The circuit for detecting the entry and exit of an earphone to/from a chamber of claim 2, wherein: the current amplification and conversion module (5) comprises an operational amplifier (51), a resistor R6 connected with a pin of the operational amplifier (51), a resistor R7 connected with a pin of the operational amplifier (51), a resistor R9 connected with an out pin of the operational amplifier (51), and a resistor R8 connected between the pin of the operational amplifier (51) and the out pin, wherein the resistor R6 and the resistor R7 are respectively connected to two ends of the sampling resistor R5, and the resistor R9 is connected with the MCU main control module (3).
4. The circuit for detecting the entrance and exit of an earphone according to any one of claims 1 to 3, wherein: the charging output end (11) comprises a +5V end (111) and a negative end (112), the +5V end (111) is connected with the battery boosting module (1), and the negative end (112) is connected with the current sampling module (4).
5. The circuit for detecting the entrance and exit of an earphone according to any one of claims 1 to 3, wherein: the MCU main control module (3) comprises a singlechip (31) supporting an ADC port and a GPIO port.
6. The circuit for detecting the entrance and exit of an earphone according to any one of claims 1 to 3, wherein: the battery boosting module (1) comprises a boosting chip (12), and the boosting chip (12) is connected with the battery (2), the MCU main control module (3) and the charging output end (11).
7. The circuit for detecting the entrance and exit of an earphone according to any one of claims 1 to 3, wherein: the charging bin switch cover detection module (6) comprises a Hall element (61), and the Hall element (61) is connected with the MCU main control module (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022141914.3U CN212965810U (en) | 2020-09-25 | 2020-09-25 | Detection circuit for earphone in-out bin |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022141914.3U CN212965810U (en) | 2020-09-25 | 2020-09-25 | Detection circuit for earphone in-out bin |
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| CN212965810U true CN212965810U (en) | 2021-04-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112099414A (en) * | 2020-09-25 | 2020-12-18 | 东莞市猎声电子科技有限公司 | Earphone in-out bin detection circuit and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112099414A (en) * | 2020-09-25 | 2020-12-18 | 东莞市猎声电子科技有限公司 | Earphone in-out bin detection circuit and method |
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