CN204669592U - Automobile instrument voice signal detects and harvester - Google Patents
Automobile instrument voice signal detects and harvester Download PDFInfo
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- CN204669592U CN204669592U CN201520330224.9U CN201520330224U CN204669592U CN 204669592 U CN204669592 U CN 204669592U CN 201520330224 U CN201520330224 U CN 201520330224U CN 204669592 U CN204669592 U CN 204669592U
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Abstract
The utility model discloses a kind of automobile instrument voice signal to detect and harvester, be intended to solve that prior art is too complicated, cost is extremely expensive, utilance is extremely low, flexibility is poor, cannot the problem that synchronously detects of the signal of telecommunication and the voice signal of direct completing circuit, this device comprises virtual Digital Oscilloscope (2), microphone (5), traffic filter amplifier circuit (4) and power circuit (3); + 9V power line, the power ground of microphone (5) are connected with No. 2 pins with No. 3 pins of the J3 interface of traffic filter amplifier circuit (4) in audio signal wire and circuit board (7), No. 1 pin, the signal output part of traffic filter amplifier circuit (4) is connected with the A channel coaxial cable of virtual Digital Oscilloscope (2), traffic filter amplifier circuit (4) is connected with power circuit (3) electric wire, and the channel B of virtual Digital Oscilloscope (2) is connected with the sound control signal line of tested instrument by oscilloprobe.
Description
Technical field
The utility model relates to a kind of voice signal checkout gear, and or rather, the utility model relates to a kind of automobile instrument voice signal and detects and harvester.
Background technology
At present, the microphone device such as most of automobile instrument all built-in " buzzer " or " loudspeaker ", for user provides corresponding sound alarm or prompting, voicefrequency circuit also becomes an important component part of instrument.Usually, harmonious euphony is sent in order to the low cost voicefrequency circuit based on " buzzer " or " loudspeaker " can be made, we can use the sound control signal of about a 50 ~ 60kHz (being generally pulse-width signal) to drive, because traditional multiple sound capture card sample rate is less than 100kHz usually, this type of capture card effectively cannot gather sound control signal, is unfavorable in the process designed and developed, find out the relation between input signal (sound control signal) and output signal (voice signal).
In addition, when removing curstomer's site collected sound signal, general acquisition system needed 220V ac power supply in the past, and power taking is very not convenient.Portable computer is also a part for voice acquisition system, and therefore, portable computer is that voice signal detects and harvester powers reality for optimal selection.And we are at the beginning of automobile instrument product development, and client lacks effective description means to when writing the demands such as instrument alarm and prompt tone, simultaneously when checking and accepting design result, there is no effective constraint means yet.Therefore, select the test of a kind of sound and tape deck thereof to be a kind of best solutions, after the test data that accumulation is a large amount of, user can set up oneself alerting tone and prompt tone storehouse, thus also can shorten the construction cycle of product voicefrequency circuit.
About sound test, there are Nat Instr Corp. in equipment, the scheme manufacturer of external main flow, Belgian LMS company etc.All there are complete systematized audio-frequency test and analysis solution in this two company, and its testing and analysis function is very powerful, but system is too complicated, cost is extremely expensive, extremely low for its utilance our design requirement, flexibility is poor, cannot the synchronous detection of the signal of telecommunication directly on completing circuit and voice signal.Therefore, be the requirement that cost or enforcement difficulty all cannot meet us.
Summary of the invention
The utility model solve prior art exist develop instrument vocal function circuit time especially sound control signal be the pulse-width signal of change in duty cycle, the voice signal how synchronous acquisition sound control signal produces with reality, so that developer finds out the relation between control signal and voice signal, and then the problem of the sound waveform wanted is obtained by the frequency and duty ratio thereof regulating sound control signal, provide a kind of automobile instrument voice signal and detect and harvester.
For solving the problems of the technologies described above, the utility model adopts following technical scheme to realize: described automobile instrument voice signal detects and harvester comprises virtual Digital Oscilloscope, microphone and circuit board; Wherein: circuit board comprises traffic filter amplifier circuit and power circuit.
Microphone is placed on the front of tested sound source, microphone adopts three core cables to be connected with traffic filter amplifier circuit, the coaxial fitting J2 of traffic filter amplifier circuit adopts coaxial cable to be connected with the A channel of virtual Digital Oscilloscope, traffic filter amplifier circuit is connected with power circuit electric wire, and the channel B of virtual Digital Oscilloscope is connected with the sound control signal line of tested instrument by oscilloprobe.
Microphone described in technical scheme adopts microphone holder to be placed on the dead ahead of tested sound source, and distance is 10cm between the two.
Microphone described in technical scheme adopts three core cables to be connected with traffic filter amplifier circuit and refers to: microphone adopts model to be the microphone of M53, and three core cables of microphone are+9V power line, power ground and audio signal wire; + 9V power line, the power ground of microphone 5 are connected with No. 2 pins with No. 3 pin of the J3 interface of the traffic filter amplifier circuit in circuit board, No. 1 pin successively with audio signal wire.
Power circuit described in technical scheme is connected with traffic filter amplifier circuit electric wire and refers to: the model in traffic filter amplifier circuit is that No. 7 pins of the high speed operation amplifier U3 of THS4601ID are connected with+12V the output of power circuit, and model is that No. 4 pins of the high speed operation amplifier U3 of THS4601ID are connected with-12V the output of power circuit.
Virtual Digital Oscilloscope described in technical scheme adopts model to be the oscilloscope of 3206B, it has two signal input channels, be respectively A channel and channel B, for coaxial cable interface, it also has a USB interface in addition, this interface is as the power supply interface of virtual Digital Oscilloscope and data communication interface, and namely USB interface adopts the USB2.0 cable of standard to be connected with portable computer.
Compared with prior art the beneficial effects of the utility model are:
1. mostly prior art is to gather for voice signal, and is not suitable for gathering sound control signal, and often need higher sampling rate to the collection of sound control signal, therefore traditional sound collection scheme cannot meet our application.Automobile instrument voice signal described in the utility model detects and harvester can carry out synchronous acquisition to voice signal and sound control signal, and the data collected can be stored by portable computer, available for follow-up data analysis etc.
2. automobile instrument voice signal detection described in the utility model and harvester have portability, and only need be powered by the USB interface of portable computer gets final product work, and sound test is very flexible at the scene.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described:
Fig. 1 is the schematic block diagram that automobile instrument voice signal described in the utility model detects and harvester structure forms;
Fig. 2 is that automobile instrument voice signal described in the utility model detects and the circuit theory diagrams of circuit board in harvester;
The envelope diagram that Fig. 3 is application automobile instrument voice signal described in the utility model detects and harvester collects voice signal and sound control signal;
Fig. 4 is the curve chart after Tu3Zhong local magnification region amplifies;
In figure: 1. crust of the device, 2. virtual Digital Oscilloscope, 3. power circuit, 4. traffic filter amplifier circuit, 5. microphone, 6. microphone holder, 7. circuit board.
Embodiment
Below in conjunction with accompanying drawing, the utility model is explained in detail:
Automobile instrument voice signal described in the utility model detects and portable computer is taken from the power supply of harvester, and the 5V Power convert that the USB interface of portable computer can provide by the power circuit that automobile instrument voice signal detects and harvester is built-in is the power supply being applicable to sound transducer (microphone 5), traffic filter amplifier circuit 4 use; Voice signal is converted to the signal of telecommunication by sound transducer (microphone 5), this signal is after signal amplifier and filter process, be sent to virtual Digital Oscilloscope (binary channels) 21 passage wherein, virtual Digital Oscilloscope 2 sends data to portable computer after analog signal is converted to digital signal, simultaneously, another passage of virtual Digital Oscilloscope 2 is received on the sound control signal of instrument, control signal is gathered, the data collected send portable computer to equally, and portable computer can show the waveform of two paths of signals simultaneously.Data can store by portable computer simultaneously, and can carry out playback to the data of record.
Automobile instrument voice signal detection described in the utility model and harvester become an effective testing tool of instrument developer, shorten the required development time of instrument voicefrequency circuit and driver, also accurately the demand of client to instrument voice output is changed into actual data simultaneously, improve the communication efficiency between client.In addition, this device is equally also applicable to detection to other general voice signals and collection.
Automobile instrument voice signal described in the utility model detects and harvester is formed with circuit board 7 primarily of crust of the device 1, virtual Digital Oscilloscope 2, microphone 5, microphone holder 6; Wherein: circuit board 7 comprises traffic filter amplifier circuit 4, power circuit 3.
Virtual Digital Oscilloscope 2 is adopted as 3000 serial binary channels virtual Digital Oscilloscope of PicoScope company, we select model to be the oscilloscope of 3206B, it has two signal input channels, be respectively A channel and channel B, for coaxial cable interface, it also has a USB interface in addition, and this interface is as the power supply interface of virtual Digital Oscilloscope 2 and data communication interface.
Microphone 5 is the M53 of LinearX company, its frequency response error is ± 5dB (20Hz ~ 20kHz), there is the features such as low noise low distortion, this microphone 5 is furnished with 3 core connection cables, core definition is respectively :+9V power line, power ground and audio signal wire, microphone 5 is connected to the J3 interface of circuit board 7 by cable.
Consult Fig. 2, circuit board 7 comprises two parts circuit, is respectively power circuit 3 and traffic filter amplifier circuit 4; The main power source chip of power circuit 3 is respectively the chip U1 that chip U2 that model is TPS65130RGE and model are LM317DCY.Its chips U2 coordinates discrete device around, be+12V and-12V power supply by the 5V Power convert that USB interface inputs, + 12V Power convert is then become+9V power supply by U1, and power circuit 3 provides+9V power supply, for traffic filter amplifying circuit 4 provides+12V and-12V power supply for microphone 5.The high speed operation amplifier U3 of the main chip of traffic filter amplifier circuit 4 to be model be THS4601ID, it and peripheral discrete device R11, R12, R9, R10, C20, C17, C18, it is 10Hz that R13 constitutes an initial frequency, and cut-off frequency is 200kHz, and gain is the band pass filter of 10 times, the voice signal that microphone 5 collects can amplify by it, filters the vibration interference of high-frequency noise interference and low frequency simultaneously.In figure, J1 is Type B USB socket, is connected with the USB interface of portable computer by USB line, and portable computer is that circuit board 7 is powered by this USB interface.J2 is coaxial fitting, is audio signal output terminal mouth, is connected to the virtual A channel showing digital oscilloscope 2 by coaxial cable.J3 is three core combo sockets, for the interface be connected with microphone 5 wire harness, namely+9V the power line of microphone 5, power ground and audio signal wire are connected with No. 2 pins with No. 3, No. 1 of the J3 interface of the traffic filter amplifier circuit 4 in circuit board 7 successively.
Concrete implementation step:
Consult Fig. 1, tested instrument is put into silencing case, and be fixed on instrument support, connect instrument wire harness, wire harness comprises power line and corresponding control line.The opposite side of instrument wire harness is connected to instrument control box, and instrument control box can give instrument power supply, and can also pass through command adapted thereto, control instrument work, instrument control box is by 13.5V Power supply.The oscilloprobe of virtual Digital Oscilloscope 2 channel B is connected on the sound control signal line of instrument simultaneously.Be fixed on by microphone 5 on microphone holder 6, the position of adjustment microphone 5, makes microphone 5 be in instrument loudspeaker dead ahead, and the distance between adjustment microphone 5 and tested sound source is to 10cm.Microphone 5 and automobile instrument voice signal described in the utility model detect and harvester is connected on the J3 connector of circuit board 7 by three core cables.The J1 interface of circuit board 7, the USB interface of virtual Digital Oscilloscope 2 are connected with portable computer by the USB2.0 cable (A revolution B metric cube is oral) of standard.
The operation principle of the detection of automobile instrument voice signal and harvester:
Consult Fig. 1, connect corresponding cable, and open 13.5V mains switch.Set the basic parameter of A, B two passages of virtual Digital Oscilloscope 2 by portable computer, prepare to start triggering and show that virtual digit ripple device 2 carries out signal capture.Operation instrument control box, make the sound that instrument sends, the voice signal that instrument sends by microphone 5 converts voltage signal to, this voltage signal is after signal amplifier filter 4 processes, convert the signal of applicable virtual Digital Oscilloscope 2 process to, and sound control signal directly can be gathered by the channel B of virtual Digital Oscilloscope 2.While instrument ring, trigger virtual Digital Oscilloscope 2 by portable computer, catch the signal waveform from its A, B two passages.
Fig. 2 and Fig. 3 is an example of this device implementation result, can very easily to the data analysis collected by portable computer, extract sound control signal and voice signal frequency, duty ratio and the information such as time, amplitude.
Claims (5)
1. automobile instrument voice signal detects and a harvester, it is characterized in that, described automobile instrument voice signal detects and harvester comprises virtual Digital Oscilloscope (2), microphone (5) and circuit board (7);
Wherein: circuit board (7) comprises traffic filter amplifier circuit (4) and power circuit (3);
Microphone (5) is placed on the front of tested sound source, microphone (5) adopts three core cables to be connected with traffic filter amplifier circuit (4), the coaxial fitting J2 of traffic filter amplifier circuit (4) adopts coaxial cable to be connected with the A channel of virtual Digital Oscilloscope (2), traffic filter amplifier circuit (4) is connected with power circuit (3) electric wire, and the channel B of virtual Digital Oscilloscope (2) is connected with the sound control signal line of tested instrument by oscilloprobe.
2. detect and harvester according to automobile instrument voice signal according to claim 1, it is characterized in that, described microphone (5) adopts microphone holder (6) to be placed on the dead ahead of tested sound source, and distance is 10cm between the two.
3. detect and harvester according to automobile instrument voice signal according to claim 1, it is characterized in that, described microphone (5) adopts three core cables to be connected with traffic filter amplifier circuit (4) and refers to:
Microphone (5) adopts model to be the microphone of M53, and three core cables of microphone (5) are+9V power line, power ground and audio signal wire; + 9V power line, the power ground of microphone (5) are connected with No. 2 pins with No. 3 pin of the J3 interface of the traffic filter amplifier circuit (4) in circuit board (7), No. 1 pin successively with audio signal wire.
4. detect and harvester according to automobile instrument voice signal according to claim 1, it is characterized in that, described power circuit (3) is connected with traffic filter amplifier circuit (4) electric wire and refers to:
Model in traffic filter amplifier circuit (4) is that No. 7 pins of the high speed operation amplifier U3 of THS4601ID are connected with+12V the output of power circuit (3), and model is that No. 4 pins of the high speed operation amplifier U3 of THS4601ID are connected with-12V the output of power circuit (3).
5. detect and harvester according to automobile instrument voice signal according to claim 1, it is characterized in that, described virtual Digital Oscilloscope (2) adopts model to be the oscilloscope of 3206B, it has two signal input channels, be respectively A channel and channel B, for coaxial cable interface, it also has a USB interface in addition, this interface is as the power supply interface of virtual Digital Oscilloscope (2) and data communication interface, and namely USB interface adopts the USB2.0 cable of standard to be connected with portable computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520330224.9U CN204669592U (en) | 2015-05-20 | 2015-05-20 | Automobile instrument voice signal detects and harvester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520330224.9U CN204669592U (en) | 2015-05-20 | 2015-05-20 | Automobile instrument voice signal detects and harvester |
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| Publication Number | Publication Date |
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| CN204669592U true CN204669592U (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520330224.9U Expired - Fee Related CN204669592U (en) | 2015-05-20 | 2015-05-20 | Automobile instrument voice signal detects and harvester |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109640227A (en) * | 2018-12-28 | 2019-04-16 | 奇瑞汽车股份有限公司 | A kind of automobile combination meter alarm volume design method |
| CN112770223A (en) * | 2019-10-21 | 2021-05-07 | 夏普株式会社 | Microphone system |
| CN113203472A (en) * | 2021-05-13 | 2021-08-03 | 深圳市鼎阳科技股份有限公司 | Microphone probe sensitivity compensation method and system for oscilloscope |
| CN113325214A (en) * | 2021-05-13 | 2021-08-31 | 深圳市鼎阳科技股份有限公司 | Oscilloscope supporting sound analysis and triggering |
| CN114325586A (en) * | 2021-12-31 | 2022-04-12 | 智己汽车科技有限公司 | Vehicle-mounted multimedia sound positioning system |
-
2015
- 2015-05-20 CN CN201520330224.9U patent/CN204669592U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109640227A (en) * | 2018-12-28 | 2019-04-16 | 奇瑞汽车股份有限公司 | A kind of automobile combination meter alarm volume design method |
| CN112770223A (en) * | 2019-10-21 | 2021-05-07 | 夏普株式会社 | Microphone system |
| CN112770223B (en) * | 2019-10-21 | 2022-06-07 | 夏普株式会社 | Microphone system |
| CN113203472A (en) * | 2021-05-13 | 2021-08-03 | 深圳市鼎阳科技股份有限公司 | Microphone probe sensitivity compensation method and system for oscilloscope |
| CN113325214A (en) * | 2021-05-13 | 2021-08-31 | 深圳市鼎阳科技股份有限公司 | Oscilloscope supporting sound analysis and triggering |
| CN114325586A (en) * | 2021-12-31 | 2022-04-12 | 智己汽车科技有限公司 | Vehicle-mounted multimedia sound positioning system |
| CN114325586B (en) * | 2021-12-31 | 2024-05-14 | 智己汽车科技有限公司 | Vehicle-mounted multimedia sound positioning system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20170520 |