CN2585356Y - Electronic device for distinguishing direction of sound - Google Patents
Electronic device for distinguishing direction of sound Download PDFInfo
- Publication number
- CN2585356Y CN2585356Y CN02290969U CN02290969U CN2585356Y CN 2585356 Y CN2585356 Y CN 2585356Y CN 02290969 U CN02290969 U CN 02290969U CN 02290969 U CN02290969 U CN 02290969U CN 2585356 Y CN2585356 Y CN 2585356Y
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- sound
- control circuit
- sound transducer
- audio direction
- electronic installation
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Abstract
The utility model relates to an electronic device for distinguishing the direction of sound, which is composed of a fixing device, sound transducers, amplifying circuits, a monostable trigger, and a control circuit of a single chip computer, wherein, the fixing device is a cylinder shape, and the N sound transducers are evenly arranged on the circumference of the fixing device; each sound transducer is inward retracted by 5 to 10 mm from the outer surface of the fixing device; the signal output end of the fixing device is connected with the input end of a corresponding amplifying circuit, and the output ends of the amplifying circuits are respectively connected with an I/O input port of the control circuit of the single chip computer; the I/O output port of the control circuit of the single chip computer is connected with a corresponding electric actuator. By judging time that a sound source arrives at different transducers, the single chip computer is used for recognizing the position of the sound source. The utility model can exactly distinguish the direction of the sound source in time, and can be used for controlling the moving direction of robots or be used on other electronic devices for identifying the direction of the sound sources.
Description
Technical field
The utility model relates to a kind of device of differentiating audio direction, refers in particular to a kind of electronic installation of differentiating audio direction
Background technology
In robot and other electronic installations, usually need a kind of audio direction discriminating gear, differentiating the direction of sound source, thus next step direction of motion of control robot, or the foundation of next step running is provided for other electronic installations.Existing sound discriminating gear can only be differentiated having or not of its sound source or general direction by sound transducer, give to differentiate accurately after sound source can not being subdivided into several regions, can not carry out comprehensive analysis and judgement to a plurality of sound sources, perhaps device and circuit are too complicated, should not use in mill run.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of electronic installation that can differentiate audio direction, and it is simple in structure, judgement is accurate.
For reaching the technical scheme that this purpose takes be: a kind of electronic installation of differentiating audio direction, comprise stationary installation 1, sound transducer 2 and amplifying circuit 3, also comprise monostalbe trigger 4 and control circuit 5.Stationary installation 1 is cylindric, evenly is equiped with N sound transducer 2 on its circumference, and each sound transducer is from the inside indentation 5-10 of the outside surface of stationary installation millimeter.The input end of the signal output part of each sound transducer 2 and corresponding amplifying circuit 3 links to each other, and the output terminal of amplifying circuit 3 is connected in the I/O input port of control circuit 5 respectively through monostalbe trigger 4, and its I/O output port is connected with corresponding topworks.
The beneficial effects of the utility model are:
1, it is accurate to differentiate Sounnd source direction: because sound transducer is evenly distributed on same circumference, so can differentiate voice signal from all directions equably.Owing to each sound transducer indentation excircle certain distance, can improve again the anti-interference of voice signal and the accuracy of discriminating direction.
2, the differentiation Sounnd source direction is timely: because the utility model can in time be sent the sound-source signal that collects into control circuit by signal amplification circuit and monostalbe trigger and carry out computing and output, as long as shorten the sampling time, the direction that just can in time discern sound source changes, and a plurality of sources of sound are distinguished, improve its recognition capability, the output signal of control circuit also can obtain to proofread and correct timely.
3, simple in structure: owing to can adopt common microphone as sound transducer, adopt the CPU (central processing unit) of single-chip microcomputer as control circuit simultaneously, its volume is little, cost is low, making is easy, and suitable robot and other electronic installations use.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is done to describe in further detail
Fig. 1 is the utility model sound transducer scheme of installation.
Fig. 2 is the utility model sound source position area dividing synoptic diagram of living in.
Fig. 3 is three microphone installation sites of the utility model figure.
Fig. 4 is the utility model audio direction judging circuit schematic diagram.
Embodiment
As shown in Figure 3, a kind of electronic installation of differentiating audio direction comprises stationary installation 1, sound transducer 2 and amplifying circuit 3, also comprises monostalbe trigger 4 and control circuit 5.Stationary installation 1 is cylindric, its external diameter is 12cm, 120 ° of sound transducers 2 that evenly are equiped with 3 microphone forms in space on its circumference, each microphone is from 7 millimeters of the inside indentations of the excircle of cylindric stationary installation 1, and 3 microphones are on the same surface level.
As shown in Figure 1 and Figure 2, the principle of utilizing said apparatus to differentiate audio direction is: on same horizontal circumference, owing to be separated by 120 ° three microphone MIC1, MIC2 and MIC3 have been installed evenly.Sound always imports microphone into from the outside of this circumference.When sound transmitted, sound source may be positioned at this circumference outer 1 position, 2 positions, 3 positions, 4 positions, 5 positions, 6 positions, also may be positioned at this circumference outer 1 district, 2 districts, 3 districts, 4 districts, 5 districts, 6 districts.Because sound is propagated by specific speed in air, so, when sound transmits, microphone MIC1, MIC2 apart from the sound source different distance can receive acoustic signals in the different moment with MIC3, setting microphone MIC1, MIC2 and MIC3 receives the required time of acoustic signals and is respectively T1, T2 and T3, according to the numerical values recited relation of T1, T2 and T3, just can differentiate the residing position of sound source.Shown in the table one is the relation table of expressing sound delivery time and sound source present position: table one
| Sequence number | The sound delivery time | The sound source |
| 1 | T1＜T2＝ | 1 |
| 2 | T1＜T2＜ | 1 |
| 3 | T1＝T2＜ | 2 |
| 4 | T2＜T1＜ | 2 |
| 5 | T2＜T1＝ | 3 |
| 6 | T2＜T3＜T1 | 3 |
| 7 | T2＝T3＜T1 | 4 |
| 8 | T3＜T2＜T1 | 4 |
| 9 | T3＜T2＝T1 | 5 |
| 10 | T3＜T1＜T2 | 5 |
| 11 | T1＝T3＜T2 | 6 |
| 12 | T1＜T3＜T2 | 6 districts |
As shown in Figure 4, three microphone MIC1, MIC2 and MIC3 are transformed into ultra-weak electronic signal with the voice signal that receives, after the 1 road voice signal arrives microphone MIC1, pass through the amplification of the two-stage amplifier that constitutes by triode Q2, Q1,5 pin that flow to this road monostalbe trigger SN74121N are as trigger pip, at this moment 6 pin of monostalbe trigger SN74121N will be exported a monopulse, and this pulse inputs to RA0 pin as the single-chip microprocessor MCU 16F876 of control circuit 5 with the form of high-low level.The electric signal that in like manner reflects the 2 road and the 3 road voice signal is received RA1 and the RA2 pin of single-chip microprocessor MCU 16F876 through two-way amplifying circuit 3 and monostalbe trigger 4 in addition respectively, and single-chip microprocessor MCU 16F876 just can carry out the differentiation of audio direction according to " expressing the relation of sound delivery time and sound source present position " in the table of being stored 1.
When using the utility model drive machines people when the direction of sounding is walked, its implementation procedure is as follows:
Single-chip microprocessor MCU 16F876 judges after the audio direction, drives the motor rotation as electric operator, thereby robot is moved to Sounnd source direction.According to circuit theory, in RA0, the RA1 and these three pins of RA2 of MCU16F876, be input as the pin of high level, pairing direction just has sound.In order to improve recognition capability, each time of rotating of the motor that gives way away shortens as far as possible, and collected sound signal repeatedly, to proofread and correct direction of travel at any time.
Represent the electric signal of 8 directions also to show by pin RB0, RB1, RB2, RB3, RB4, RB5, RB6, the RB7 driven for emitting lights diode of single-chip microcomputer B mouth.Perhaps carry out other digital signal processing as direction signal.
Claims (6)
1, a kind of electronic installation of differentiating audio direction, comprise stationary installation (1), sound transducer (2) and amplifying circuit (3), it is characterized in that: also comprise monostalbe trigger (4) and control circuit (5), described stationary installation (1) is cylindric, evenly be equiped with N sound transducer (2) on its circumference, the signal output part of each sound transducer (2) links to each other with the input end of corresponding amplifying circuit (3), the output terminal of amplifying circuit (3) is connected in one group of I/O input port of control circuit (5) respectively through monostalbe trigger (4), its I/O output port is connected with corresponding electric operator.
2, the electronic installation of differentiation audio direction according to claim 1 is characterized in that: the external diameter of described cylindric stationary installation (1) is 10-25 centimetre.
3, the electronic installation of differentiation audio direction according to claim 1 is characterized in that: the number of a described N sound transducer (2) is 3-6.
4, the electronic installation of differentiation audio direction according to claim 1 is characterized in that: a described N sound transducer (2) is installed on the same surface level.
5, the electronic installation of differentiation audio direction according to claim 1 is characterized in that: the excircle inside indentation 5-10 millimeter of a described N sound transducer (2) along diametric(al) from cylindric stationary installation (1).
6, the electronic installation of differentiation audio direction according to claim 1 is characterized in that: described control circuit (5) is CPU (central processing unit) with the single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02290969U CN2585356Y (en) | 2002-12-17 | 2002-12-17 | Electronic device for distinguishing direction of sound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02290969U CN2585356Y (en) | 2002-12-17 | 2002-12-17 | Electronic device for distinguishing direction of sound |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2585356Y true CN2585356Y (en) | 2003-11-05 |
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ID=33749988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02290969U Expired - Fee Related CN2585356Y (en) | 2002-12-17 | 2002-12-17 | Electronic device for distinguishing direction of sound |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2585356Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101504546B (en) * | 2008-12-12 | 2010-04-21 | 北京科技大学 | Children robot posture tracking apparatus |
| CN102843815A (en) * | 2011-06-24 | 2012-12-26 | 鸿富锦精密工业（深圳）有限公司 | Music color lamp for computer case |
| CN104486493A (en) * | 2014-12-10 | 2015-04-01 | 上海斐讯数据通信技术有限公司 | System and method for controlling mobile phone to automatically run |
| CN104977869A (en) * | 2015-07-15 | 2015-10-14 | 成都陌云科技有限公司 | Special processor in intelligent sound recognition robot |
| CN108254721A (en) * | 2018-04-13 | 2018-07-06 | 歌尔科技有限公司 | A kind of positioning sound source by robot and robot |
-
2002
- 2002-12-17 CN CN02290969U patent/CN2585356Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101504546B (en) * | 2008-12-12 | 2010-04-21 | 北京科技大学 | Children robot posture tracking apparatus |
| CN102843815A (en) * | 2011-06-24 | 2012-12-26 | 鸿富锦精密工业（深圳）有限公司 | Music color lamp for computer case |
| CN104486493A (en) * | 2014-12-10 | 2015-04-01 | 上海斐讯数据通信技术有限公司 | System and method for controlling mobile phone to automatically run |
| CN104977869A (en) * | 2015-07-15 | 2015-10-14 | 成都陌云科技有限公司 | Special processor in intelligent sound recognition robot |
| CN108254721A (en) * | 2018-04-13 | 2018-07-06 | 歌尔科技有限公司 | A kind of positioning sound source by robot and robot |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |