CN102647652A - Audio acquisition and processing circuit for vehicle-mounted talkback system - Google Patents
Audio acquisition and processing circuit for vehicle-mounted talkback system Download PDFInfo
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- CN102647652A CN102647652A CN2011100419651A CN201110041965A CN102647652A CN 102647652 A CN102647652 A CN 102647652A CN 2011100419651 A CN2011100419651 A CN 2011100419651A CN 201110041965 A CN201110041965 A CN 201110041965A CN 102647652 A CN102647652 A CN 102647652A
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Abstract
The invention discloses an audio acquisition and processing circuit for a vehicle-mounted talkback system. The audio acquisition and processing circuit comprises a microphone interface, wherein the microphone interface is respectively connected with an acquisition circuit and an amplifying circuit; the acquisition circuit and the amplifying circuit are connected to a controller which is connected with an SDRAM (Synchronous Dynamic Random Access Memory) and a Flash memory and is also connected with an Ethernet interface; and further, the controller is also connected with an RS232 interface. The audio acquisition and processing circuit disclosed by the invention has the advantages of simple structure, simple wiring and short debugging period and is beneficial to the promotion and application of the vehicle-mounted talkback system.
Description
Technical field
The invention belongs to the vehicle-mounted intercom system technical field of urban track traffic, concrete relate to a kind of audio collection treatment circuit that is used for vehicle-mounted intercom system.
Background technology
There is the long shortcoming of debugging cycle in the general system of vehicle-mounted intercommunication that is used for urban track traffic at present; And consider on most of trains that this lower reason has all adopted the simulation intercom system; But the cabling of simulation intercom system is more loaded down with trivial details, and can have a lot of uncertain disturbing factors or the like because of on-the-spot concrete environment.
Summary of the invention
For overcoming deficiency of the prior art, the object of the present invention is to provide a kind of audio collection treatment circuit that is used for vehicle-mounted intercom system, this audio collection treatment circuit wiring is succinct, and debugging cycle is short.
In order to solve the problems of the technologies described above, realize above-mentioned purpose, the present invention has adopted following technical scheme:
A kind of audio collection treatment circuit that is used for vehicle-mounted intercom system; Comprise a subject for ridicule interface; Said subject for ridicule interface is connected with an Acquisition Circuit and amplifying circuit respectively; Said Acquisition Circuit and amplifying circuit are connected on the controller, and said controller is connected with SDRAM memory and Flash memory, and said controller also is connected with Ethernet interface.
Further, said controller also is connected with a RS232 interface.
Further; Said Acquisition Circuit comprises first resistance, second resistance, photoelectrical coupler and voltage-stabiliser tube; Said first resistance, one end connects the subject for ridicule interface, and the other end connects first pin of said photoelectrical coupler, and second pin of said photoelectrical coupler is through said second grounding through resistance; One end of said voltage-stabiliser tube is connected the link of said first resistance and said photoelectrical coupler; The other end is connected the said second grounding through resistance end, the 3rd pin ground connection of said photoelectrical coupler, and the 4th pin connects said controller.
The present invention has the following advantages:
The audio collection treatment circuit that is used for vehicle-mounted intercom system of the present invention is simple in structure, and wiring is succinct, debugging cycle is short, is easy to promoting the use of of vehicle-mounted intercom system.
Above-mentioned explanation only is the general introduction of technical scheme of the present invention, understands technological means of the present invention in order can more to know, and can implement according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. specify as after.Embodiment of the present invention is provided by following examples and accompanying drawing thereof in detail.
Description of drawings
Fig. 1 is the systematic schematic diagram that is used for the audio collection treatment circuit of vehicle-mounted intercom system of the present invention.
Fig. 2 is the circuit theory diagrams of Acquisition Circuit of the present invention.
Label declaration among the figure: 1, subject for ridicule interface, 2, Acquisition Circuit, 3, amplifying circuit, 4, controller, 5, the RS232 interface, 6, Ethernet interface, 7, the SDRAM memory, 8, the Flash memory.
Embodiment
Below in conjunction with accompanying drawing and embodiment technology implementation process of the present invention is further specified.
Referring to shown in Figure 1; A kind of audio collection treatment circuit that is used for vehicle-mounted intercom system; Comprise a subject for ridicule interface 1, said subject for ridicule interface 1 is connected with an Acquisition Circuit 2 and amplifying circuit 3 respectively, and said Acquisition Circuit 2 is connected on the controller 4 with amplifying circuit 3; Said controller 4 is connected with SDRAM memory 7 and Flash memory 8, and said controller 4 also is connected with Ethernet interface 6.
Further, said controller 4 also is connected with a RS232 interface 5.
Referring to shown in Figure 2; Said Acquisition Circuit 2 comprises first resistance R 1, second resistance R 2, photoelectrical coupler U1 and voltage-stabiliser tube DA1; Said first resistance R, 1 one ends connect subject for ridicule interface 1, and the other end connects first pin of said photoelectrical coupler U1, and second pin of said photoelectrical coupler U1 is through said second resistance R, 2 ground connection; The end of said voltage-stabiliser tube DA1 is connected the link of said first resistance R 1 and said photoelectrical coupler U1; The other end is connected said second resistance R, 2 earth terminals, the 3rd pin ground connection of said photoelectrical coupler U1, and the 4th pin connects said controller 4.
The foregoing description just is to let the one of ordinary skilled in the art can understand content of the present invention and enforcement according to this in order technical conceive of the present invention and characteristics to be described, to be its objective is, can not limit protection scope of the present invention with this.The variation or the modification of every equivalence that the essence of content has been done according to the present invention all should be encompassed in protection scope of the present invention.
Claims (3)
1. audio collection treatment circuit that is used for vehicle-mounted intercom system; Comprise a subject for ridicule interface (1); Said subject for ridicule interface (1) is connected with an Acquisition Circuit (2) and amplifying circuit (3) respectively; Said Acquisition Circuit (2) and amplifying circuit (3) are connected on the controller (4), and said controller (4) is connected with SDRAM memory (7) and Flash memory (8), it is characterized in that: said controller (4) also is connected with Ethernet interface (6).
2. the audio collection treatment circuit that is used for vehicle-mounted intercom system according to claim 1 is characterized in that: said controller (4) also is connected with a RS232 interface (5).
3. the audio collection treatment circuit that is used for vehicle-mounted intercom system according to claim 1 and 2; It is characterized in that: said Acquisition Circuit (2) comprises first resistance (R1), second resistance (R2), photoelectrical coupler (U1) and voltage-stabiliser tube (DA1); Said first resistance (R1) end connects subject for ridicule interface (1); The other end connects first pin of said photoelectrical coupler (U1); Second pin of said photoelectrical coupler (U1) is through said second resistance (R2) ground connection, and an end of said voltage-stabiliser tube (DA1) is connected the link of said first resistance (R1) and said photoelectrical coupler (U1), and the other end is connected said second resistance (R2) earth terminal; The 3rd pin ground connection of said photoelectrical coupler (U1), the 4th pin connects said controller (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100419651A CN102647652A (en) | 2011-02-22 | 2011-02-22 | Audio acquisition and processing circuit for vehicle-mounted talkback system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100419651A CN102647652A (en) | 2011-02-22 | 2011-02-22 | Audio acquisition and processing circuit for vehicle-mounted talkback system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102647652A true CN102647652A (en) | 2012-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100419651A Pending CN102647652A (en) | 2011-02-22 | 2011-02-22 | Audio acquisition and processing circuit for vehicle-mounted talkback system |
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| CN (1) | CN102647652A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107147960A (en) * | 2017-05-18 | 2017-09-08 | 苏贻新 | One kind is vehicle-mounted to exempt from hand-hold wireless intercom method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2938583Y (en) * | 2006-06-12 | 2007-08-22 | 上海三吉电子工程有限公司 | Digital trunk vehicle intercome |
| WO2008050583A1 (en) * | 2006-10-26 | 2008-05-02 | Panasonic Electric Works Co., Ltd. | Intercom device and wiring system using the same |
| CN201435761Y (en) * | 2009-05-25 | 2010-03-31 | 广州惠禾电子有限责任公司 | Doorphone terminal for building talkback systems |
| CN201570088U (en) * | 2009-08-28 | 2010-09-01 | 镇江奇点软件有限公司 | Multifunctional client of bank |
| CN101969515A (en) * | 2010-10-27 | 2011-02-09 | 郑州新德力工贸有限公司 | Wireless audio and video early warning terminal device |
| CN202004949U (en) * | 2011-02-22 | 2011-10-05 | 苏州阿纳克斯爱酷达电子有限公司 | Audio acquisition processing circuit for on-vehicle talkback system |
-
2011
- 2011-02-22 CN CN2011100419651A patent/CN102647652A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2938583Y (en) * | 2006-06-12 | 2007-08-22 | 上海三吉电子工程有限公司 | Digital trunk vehicle intercome |
| WO2008050583A1 (en) * | 2006-10-26 | 2008-05-02 | Panasonic Electric Works Co., Ltd. | Intercom device and wiring system using the same |
| CN201435761Y (en) * | 2009-05-25 | 2010-03-31 | 广州惠禾电子有限责任公司 | Doorphone terminal for building talkback systems |
| CN201570088U (en) * | 2009-08-28 | 2010-09-01 | 镇江奇点软件有限公司 | Multifunctional client of bank |
| CN101969515A (en) * | 2010-10-27 | 2011-02-09 | 郑州新德力工贸有限公司 | Wireless audio and video early warning terminal device |
| CN202004949U (en) * | 2011-02-22 | 2011-10-05 | 苏州阿纳克斯爱酷达电子有限公司 | Audio acquisition processing circuit for on-vehicle talkback system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107147960A (en) * | 2017-05-18 | 2017-09-08 | 苏贻新 | One kind is vehicle-mounted to exempt from hand-hold wireless intercom method |
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Application publication date: 20120822 |