CN203368749U - A wireless hand-held microphone - Google Patents
A wireless hand-held microphone Download PDFInfo
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- CN203368749U CN203368749U CN 201320391716 CN201320391716U CN203368749U CN 203368749 U CN203368749 U CN 203368749U CN 201320391716 CN201320391716 CN 201320391716 CN 201320391716 U CN201320391716 U CN 201320391716U CN 203368749 U CN203368749 U CN 203368749U
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Abstract
The utility model provides a wireless hand-held microphone comprising a sound head, an audio circuit, and a microphone circuit which are connected successively. The wireless hand-held microphone is characterized in that the wireless hand-held microphone also comprises an acceleration sensing circuit, that the acceleration sensing circuit comprises an acceleration sensor and a processing circuit, and that the acceleration sensor is connected with the microphone circuit through the processing circuit. The wireless hand-held microphone senses whether the microphone is held by a hand with the acceleration sensor so as to control the microphone to be automatic turned on or off and to provide effective and stable operative voltage for the microphone. The wireless hand-held microphone is capable of reducing the power consumption of the microphone and prolongs the service life of the microphone.
Description
Technical field
The utility model relates to the wireless handheld microphone, is specifically related to the wireless handheld microphone of automatic switch.
Background technology
Microphone, as a kind of electroacoustic apparatus, be widely used in the occasions such as school, law court, government organs, meeting room and KTV.At present, wireless handheld microphone on the market is all to control the startup and shutdown of microphone with button.Each start, shutdown all will manually be operated by button, do not close microphone when the user often puts down microphone, allow microphone continue opening, and can cause unnecessary energy consumption like this, cause the service time of energy waste and shortening battery.
The utility model content
For above-mentioned prior art deficiency, the technical problems to be solved in the utility model is to provide a kind of wireless handheld microphone that can automatic switch.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is that the wireless handheld microphone, comprise the pick-up head, voicefrequency circuit and the microphone circuit that connect successively; Also comprise the acceleration sensing circuit, described acceleration sensing circuit comprises acceleration transducer and treatment circuit; Acceleration transducer is connected with microphone circuit by treatment circuit.Such structure judges by acceleration transducer whether microphone is used, thereby is operated by the automatic switch of processing circuit controls microphone circuit.
Preferred technical scheme is that described acceleration transducer is the LIS3DH chip; The 4th pin of described LIS3DH chip is held as SCL, and the 6th pin is held as SDA, and the first pin, the 8th pin all are connected with positive supply BAT+ with the 14 pin, the 5th pin, the 7th pin, the tenth pin and the equal ground connection of the 12 pin; The SCL end is connected with treatment circuit as signal output part with the SDA end.
Further technical scheme is that described treatment circuit comprises single-chip microcomputer, power supply circuits and control circuit; Single-chip microcomputer is connected with the output of acceleration transducer; The input of power supply circuits is connected with single-chip microcomputer, and the power supply output of power supply circuits is connected with the power end of microphone circuit; The input of control circuit is connected with single-chip microcomputer, and the output of control circuit is connected with the switch terminals of microphone circuit.Such structure makes microphone circuit provide operating voltage by power supply circuits, and controls automatic switch by control circuit, good working effect, and wherein, the switch terminals of microphone circuit refers to the node that microphone circuit Central Plains cause key switch is connected.
Further technical scheme is, described power supply circuits comprise resistance R 1, resistance R 2, field effect transistor Q1 and capacitor C 6; One end of resistance R 2 is connected with the V_OUT pin of single-chip microcomputer as the input of power supply circuits, and the other end of resistance R 2 is connected to the grid of field effect transistor Q1; The grid of field effect transistor Q1 is connected to the anode of field effect transistor Q1 by resistance R 1; The anode of field effect transistor Q1 also is connected with positive supply BAT+; The negative electrode of field effect transistor Q1 is by capacitor C 6 ground connection; The negative electrode of field effect transistor Q1 is connected with the power end of microphone circuit as power supply output VCC_OUT.Such structure enables the operating voltage of power supply circuits stable output, guarantees the result of use of microphone, and effectively realizes the function of automatic switch.
Preferably, described single-chip microcomputer is the STC15L104E chip; The second pin of described STC15L104E chip is connected with positive supply BAT+, and the first pin is connected with the output of acceleration transducer as input with three-prong, the 4th pin ground connection, and the 7th pin is connected with the input of power supply circuits as the V_OUT pin.
Further technical scheme is that described control circuit comprises resistance R 3, resistance R 4, resistance R 5, field effect transistor Q2, transistor Q3 and transistor Q4; The negative electrode of transistor Q3 is connected with the C_OUT pin of single-chip microcomputer as the input of control circuit, and the base stage of transistor Q3 is connected with positive supply BAT+ by resistance R 6, and the anode of transistor Q3 is connected to the grid of field effect transistor Q2 by resistance R 4; The grid of field effect transistor Q2 is connected to positive supply BAT+ by resistance R 3, and the anodic bonding of field effect transistor Q2 is to positive supply BAT+; The negative electrode of field effect transistor Q2 is connected to the base stage of transistor Q4, the minus earth of transistor Q4 by resistance R 5; The negative electrode of field effect transistor Q2 is as high level output end H_OUT, and the anode of transistor Q4 is as low level output end L_OUT, and high level output end H_OUT or low level output end L_OUT are connected with the switch terminals of microphone circuit.Such structure is the starting-up signal of stable output effectively, guarantees the realization of auto-switch function.Wherein, microphone circuit generally has high level start and low level to start shooting two kinds, and such structure can also guarantee the compatibility with original microphone circuit, and high level start or level start all can be used.
Preferably, described single-chip microcomputer is the STC15L104E chip; The second pin of described STC15L104E chip is connected with positive supply BAT+, and the first pin is connected with the output of acceleration transducer as input with three-prong, the 4th pin ground connection, and the 8th pin is connected with output circuit as the C_OUT pin.
More preferably, the first pin of STC15L104E chip is connected with positive supply BAT+ by resistance R 7, and the second pin of STC15L104E chip is connected with positive supply BAT+ by resistance R 8.
More preferably, after capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4 and 5 five Parallel-connected Capacitors of capacitor C, be connected between positive supply BAT+ and ground; Wherein the capacitance value of capacitor C 1, capacitor C 2 and capacitor C 3 is 0.8 μ F-1.5 μ F, and the capacitance value of capacitor C 4 and capacitor C 5 is 80nF-150nF.
Whether wireless handheld microphone of the present utility model passes through the acceleration transducer inductive microphone in hand holding state, thereby control Auto Power On or the shutdown of microphone, and can provide effective, stable operating voltage for microphone, and can effectively reduce the energy consumption of microphone, extend the useful life of microphone.
The accompanying drawing explanation
Fig. 1 is the structural representation of wireless handheld microphone of the present utility model.
Fig. 2 is the acceleration sensor structure schematic diagram of wireless handheld microphone of the present utility model.
Fig. 3 is the treatment circuit structural representation of wireless handheld microphone of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, wireless handheld microphone of the present utility model, comprise the pick-up head, voicefrequency circuit and the microphone circuit that connect successively; It is characterized in that: also comprise the acceleration sensing circuit, described acceleration sensing circuit comprises acceleration transducer and treatment circuit; Acceleration transducer is connected with microphone circuit by treatment circuit.Wherein, pick-up head, voicefrequency circuit and microphone circuit are not improvement main points of the present utility model, can adopt existing interlock circuit to realize, do not repeat them here.Whether acceleration transducer has acceleration change for detection of microphone, thereby judges transfixion is picked up, holds and put down to microphone whether, thereby automatically controls the opening and closing of microphone.When hanging on, acceleration transducer has been sensed acceleration change, and microphone is opened automatically; When holding microphone, microphone has slight motion, and acceleration transducer has been sensed acceleration change, and microphone is held open state; When putting down the microphone transfixion, acceleration transducer is sensed does not have acceleration change, and microphone is closed automatically.
As shown in Figure 2, described acceleration transducer is the LIS3DH chip; The 4th pin of described LIS3DH chip is held as SCL, and the 6th pin is held as SDA, and the first pin, the 8th pin all are connected with positive supply BAT+ with the 14 pin, the 5th pin, the 7th pin, the tenth pin and the equal ground connection of the 12 pin; The SCL end is connected with treatment circuit as signal output part with the SDA end.Such structure applications is in the circuit part of microphone, can effectively dwindle the package area of this chip, and due under hand-held state, the action of microphone is less, this chip is proposed the sensitivity of energy high-sensitivity detection, the realization of assurance function, the energy consumption of chip is low simultaneously, under working long hours, still can keep superperformance.
As shown in Figure 3, described treatment circuit comprises single-chip microcomputer, power supply circuits and control circuit; Single-chip microcomputer is connected with the output of acceleration transducer; The input of power supply circuits is connected with single-chip microcomputer, and the power supply output of power supply circuits is connected with the power end of microphone circuit; The input of control circuit is connected with single-chip microcomputer, and the output of control circuit is connected with the switch terminals of microphone circuit.
Particularly, described power supply circuits comprise resistance R 1, resistance R 2, field effect transistor Q1 and capacitor C 6; One end of resistance R 2 is connected with the V_OUT pin of single-chip microcomputer as the input of power supply circuits, and the other end of resistance R 2 is connected to the grid of field effect transistor Q1; The grid of field effect transistor Q1 is connected to the anode of field effect transistor Q1 by resistance R 1; The anode of field effect transistor Q1 also is connected with positive supply BAT+; The negative electrode of field effect transistor Q1 is by capacitor C 6 ground connection; The negative electrode of field effect transistor Q1 is connected with the power end of microphone circuit as power supply output VCC_OUT.
Described control circuit comprises resistance R 3, resistance R 4, resistance R 5, field effect transistor Q2, transistor Q3 and transistor Q4; The negative electrode of transistor Q3 is connected with the C_OUT pin of single-chip microcomputer as the input of control circuit, and the base stage of transistor Q3 is connected with positive supply BAT+ by resistance R 6, and the anode of transistor Q3 is connected to the grid of field effect transistor Q2 by resistance R 4; The grid of field effect transistor Q2 is connected to positive supply BAT+ by resistance R 3, and the anodic bonding of field effect transistor Q2 is to positive supply BAT+; The negative electrode of field effect transistor Q2 is connected to the base stage of transistor Q4, the minus earth of transistor Q4 by resistance R 5; The negative electrode of field effect transistor Q2 is as high level output end H_OUT, and the anode of transistor Q4 is as low level output end L_OUT, and high level output end H_OUT or low level output end L_OUT are connected with the switch terminals of microphone circuit.Wherein, the switch terminals of microphone circuit refers to the node that microphone circuit Central Plains cause key switch is connected, only need be under the dismounting of the case switch of microphone circuit, the high level output end H_OUT of control circuit or low level output end L_OUT in connection, at once directly by control circuit, driven the switch terminals of microphone circuit, without by user's manual operation switch.Wherein, field effect transistor Q1 in the present embodiment and field effect transistor Q2 are the IRLML6401 field effect transistor, are enhancement mode P type field effect transistor, have that low-voltage, energy consumption are low, stable performance a little, its Anodic is the source electrode of this field effect transistor only, if select the capable field effect transistor of N be drain electrode.Transistor Q3, transistor Q4 are NPN type triodes, and its anode refers to collector electrode, if select positive-negative-positive refer to emitter.
Described single-chip microcomputer is the STC15L104E chip; The second pin of described STC15L104E chip is connected with positive supply BAT+, the first pin is connected with the output of acceleration transducer as input with three-prong, the 4th pin ground connection, the 7th pin is connected with the input of power supply circuits as the V_OUT pin, and the 8th pin is connected with output circuit as the C_OUT pin.The first pin of STC15L104E chip is connected with positive supply BAT+ by resistance R 7, and the second pin of STC15L104E chip is connected with positive supply BAT+ by resistance R 8.After capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4 and 5 five Parallel-connected Capacitors of capacitor C, be connected between positive supply BAT+ and ground; Wherein the resistance value value of resistance R 1 and resistance R 3 is 15K Ω-30K Ω, the resistance value value of resistance R 2 and resistance R 4 is 200 Ω-500 Ω, the resistance value value of resistance R 5, resistance R 6, resistance R 7 and resistance R 8 is 5K Ω-20K Ω, the capacitance value of capacitor C 1, capacitor C 2 and capacitor C 3 is 0.8 μ F-1.5 μ F, and the capacitance value of capacitor C 4 and capacitor C 5 is 80nF-150nF.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (9)
1. the wireless handheld microphone, comprise the pick-up head, voicefrequency circuit and the microphone circuit that connect successively; It is characterized in that: also comprise the acceleration sensing circuit, described acceleration sensing circuit comprises acceleration transducer and treatment circuit; Acceleration transducer is connected with microphone circuit by treatment circuit.
2. wireless handheld microphone according to claim 1, it is characterized in that: described acceleration transducer is the LIS3DH chip; The 4th pin of described LIS3DH chip is held as SCL, and the 6th pin is held as SDA, and the first pin, the 8th pin all are connected with positive supply BAT+ with the 14 pin, the 5th pin, the 7th pin, the tenth pin and the equal ground connection of the 12 pin; The SCL end is connected with treatment circuit as signal output part with the SDA end.
3. wireless handheld microphone according to claim 1, it is characterized in that: described treatment circuit comprises single-chip microcomputer, power supply circuits and control circuit; Single-chip microcomputer is connected with the output of acceleration transducer; The input of power supply circuits is connected with single-chip microcomputer, and the power supply output of power supply circuits is connected with the power end of microphone circuit; The input of control circuit is connected with single-chip microcomputer, and the output of control circuit is connected with the switch terminals of microphone circuit.
4. wireless handheld microphone according to claim 3, it is characterized in that: described power supply circuits comprise resistance R 1, resistance R 2, field effect transistor Q1 and capacitor C 6; One end of resistance R 2 is connected with the V_OUT pin of single-chip microcomputer as the input of power supply circuits, and the other end of resistance R 2 is connected to the grid of field effect transistor Q1; The grid of field effect transistor Q1 is connected to the anode of field effect transistor Q1 by resistance R 1; The anode of field effect transistor Q1 also is connected with positive supply BAT+; The negative electrode of field effect transistor Q1 is by capacitor C 6 ground connection; The negative electrode of field effect transistor Q1 is connected with the power end of microphone circuit as power supply output VCC_OUT.
5. wireless handheld microphone according to claim 4, it is characterized in that: described single-chip microcomputer is the STC15L104E chip; The second pin of described STC15L104E chip is connected with positive supply BAT+, and the first pin is connected with the output of acceleration transducer as input with three-prong, the 4th pin ground connection, and the 7th pin is connected with the input of power supply circuits as the V_OUT pin.
6. wireless handheld microphone according to claim 3, it is characterized in that: described control circuit comprises resistance R 3, resistance R 4, resistance R 5, field effect transistor Q2, transistor Q3 and transistor Q4; The negative electrode of transistor Q3 is connected with the C_OUT pin of single-chip microcomputer as the input of control circuit, and the base stage of transistor Q3 is connected with positive supply BAT+ by resistance R 6, and the anode of transistor Q3 is connected to the grid of field effect transistor Q2 by resistance R 4; The grid of field effect transistor Q2 is connected to positive supply BAT+ by resistance R 3, and the anodic bonding of field effect transistor Q2 is to positive supply BAT+; The negative electrode of field effect transistor Q2 is connected to the base stage of transistor Q4, the minus earth of transistor Q4 by resistance R 5; The negative electrode of field effect transistor Q2 is as high level output end H_OUT, and the anode of transistor Q4 is as low level output end L_OUT, and high level output end H_OUT or low level output end L_OUT are connected with the switch terminals of microphone circuit.
7. wireless handheld microphone according to claim 6, it is characterized in that: described single-chip microcomputer is the STC15L104E chip; The second pin of described STC15L104E chip is connected with positive supply BAT+, and the first pin is connected with the output of acceleration transducer as input with three-prong, the 4th pin ground connection, and the 8th pin is connected with output circuit as the C_OUT pin.
8. according to the described wireless handheld microphone of claim 5 or 7, it is characterized in that: the first pin of STC15L104E chip is connected with positive supply BAT+ by resistance R 7, and the second pin of STC15L104E chip is connected with positive supply BAT+ by resistance R 8.
9. wireless handheld microphone according to claim 8, is characterized in that: after capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4 and 5 five Parallel-connected Capacitors of capacitor C, be connected between positive supply BAT+ and ground; Wherein the capacitance value of capacitor C 1, capacitor C 2 and capacitor C 3 is 0.8 μ F-1.5 μ F, and the capacitance value of capacitor C 4 and capacitor C 5 is 80nF-150nF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320391716 CN203368749U (en) | 2013-07-02 | 2013-07-02 | A wireless hand-held microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320391716 CN203368749U (en) | 2013-07-02 | 2013-07-02 | A wireless hand-held microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203368749U true CN203368749U (en) | 2013-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320391716 Withdrawn - After Issue CN203368749U (en) | 2013-07-02 | 2013-07-02 | A wireless hand-held microphone |
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| Country | Link |
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| CN (1) | CN203368749U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103347240A (en) * | 2013-07-02 | 2013-10-09 | 广州瀚诚电子产品有限公司 | Wireless handheld microphone |
| EP3166339A1 (en) * | 2015-11-04 | 2017-05-10 | Alexander Botz | Wireless electronic device with orientation-based power control |
-
2013
- 2013-07-02 CN CN 201320391716 patent/CN203368749U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103347240A (en) * | 2013-07-02 | 2013-10-09 | 广州瀚诚电子产品有限公司 | Wireless handheld microphone |
| CN103347240B (en) * | 2013-07-02 | 2016-02-24 | 广州瀚诚电子产品有限公司 | Wireless handheld microphone |
| EP3166339A1 (en) * | 2015-11-04 | 2017-05-10 | Alexander Botz | Wireless electronic device with orientation-based power control |
| CN106658321A (en) * | 2015-11-04 | 2017-05-10 | 斯达克实验室公司 | Wireless electronic device with orientation-based power control |
| US9980061B2 (en) | 2015-11-04 | 2018-05-22 | Starkey Laboratories, Inc. | Wireless electronic device with orientation-based power control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131225 Effective date of abandoning: 20160224 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |