CN203166892U - Wireless audio reception apparatus used for vehicle system - Google Patents
Wireless audio reception apparatus used for vehicle system Download PDFInfo
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- CN203166892U CN203166892U CN 201320222955 CN201320222955U CN203166892U CN 203166892 U CN203166892 U CN 203166892U CN 201320222955 CN201320222955 CN 201320222955 CN 201320222955 U CN201320222955 U CN 201320222955U CN 203166892 U CN203166892 U CN 203166892U
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- power supply
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- switching power
- module
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Abstract
The utility model relates to the field of vehicle radio correlated technologies and particularly relates to a wireless audio reception apparatus used for a vehicle system. The wireless audio reception apparatus comprises a wireless audio reception module, a power module having a DC/DC power supply, a singlechip controlling the frequency of the wireless audio reception module and the frequency of the DC/DC power supply, and a storage device. The singlechip is respectively connected with the wireless audio reception module, the DC/DC power supply and the storage device by serial ports. The power module is connected with and supplies power to the wireless audio reception module, the singlechip and the storage device. The wireless audio reception apparatus uses synchronization characteristics of a specific switch power, enables the singlechio to sent different frequency signals, enables the switch power to work at different frequencies in various reception frequency bands, and effectively prevents interference and influence of working frequencies and harmonic waves thereof on reception frequency bands.
Description
Technical field
The utility model relates to the vehicular radio correlative technology field, particularly a kind of ANTENN AUDIO receiving system for onboard system.
Background technology
In the vehicle audio navigation system, Switching Power Supply is used in a large number, is handling on the Switching Power Supply interference problem, and general way is to optimize distribution, improve layout, increase filter capacitor, increases shielding measure etc., and these measures all can have effect more or less.But in the project development phase, owing to be subjected to the restriction of various conditions, such as mechanical structure, PCB space, Material Cost and development time etc., these all can influence the actual effect of debugging.With regard to disturbing radio reception, changed this frequency often, another frequency goes wrong again; Or, dropped into high cost, it is but very little to produce effects.
Summary of the invention
The utility model provides a kind of ANTENN AUDIO receiving system for onboard system, disturbs the technical problem of ANTENN AUDIO reception to solve the prior art Switching Power Supply.
The technical scheme that adopts is as follows:
A kind of ANTENN AUDIO receiving system for onboard system, comprise: single-chip microcomputer and the memory of ANTENN AUDIO receiver module, the power module with DC/DC Switching Power Supply, control ANTENN AUDIO receiver module frequency and DC/DC Switching Power Supply frequency, described single-chip microcomputer is connected with ANTENN AUDIO receiver module, DC/DC Switching Power Supply and memory respectively by serial ports, and described power module is connected with ANTENN AUDIO receiver module, single-chip microcomputer and memory respectively and powers.
Further, described single-chip microcomputer comprises control unit, and the ANTENN AUDIO receive frequency of connection control unit arranges module and DC/DC Switching Power Supply frequency setting module:
The ANTENN AUDIO receive frequency arranges module, is connected with the ANTENN AUDIO receiver module, is used for the frequency of control ANTENN AUDIO receiver module;
DC/DC Switching Power Supply frequency setting module is connected with the DC/DC Switching Power Supply, is used for the frequency of control DC/DC Switching Power Supply;
Control unit also is connected with memory, is used for the frequency according to the ANTENN AUDIO receiver module, selects corresponding frequencies by the frequency of DC/DC Switching Power Supply frequency setting module control DC/DC Switching Power Supply from memory.
Further, described DC/DC Switching Power Supply is provided with the external clock interface, and described single-chip microcomputer is connected with the external clock interface of DC/DC Switching Power Supply.
The utility model utilizes the synchronizing characteristics of particular switch power supply, sends different frequency signals by single-chip microcomputer, allows the switch power supply in each radio reception frequency range, is operated in different frequencies, avoids operating frequency and harmonic wave thereof to interference and the influence of this radio reception frequency range effectively.
Description of drawings
Fig. 1 is the modular structure figure of the utility model embodiment.
Embodiment
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, a kind of ANTENN AUDIO receiving system 100 for onboard system of the utility model embodiment, comprise: ANTENN AUDIO receiver module 110, the power module 120 with DC/DC Switching Power Supply 121, single-chip microcomputer 130 and memory 140, described single-chip microcomputer 130 is connected with ANTENN AUDIO receiver module 110, DC/DC Switching Power Supply 121 and memory respectively by serial ports, control ANTENN AUDIO receiver module 110 frequencies and DC/DC Switching Power Supply 121 frequencies.
ANTENN AUDIO receiver module 110 can adopt existing various ANTENN AUDIO receiver, for example comprises the ANTENN AUDIO receiver of f-m stereo acoustic receiver, crystal oscillator, filter circuit and antenna.
Power module 120 is connected with ANTENN AUDIO receiver module 110, single-chip microcomputer 130 and memory 140 respectively and powers, and dotted line is power line among the figure.
DC/DC Switching Power Supply 121 can adopt existing various switching power source chip.
Preserving the Database Lists of frequency and the corresponding relation of the frequency range of corresponding radio reception in the memory 140, is through a large amount of debugging, actual measurement and data analysis, sums up come out effective, reliable and stable a database again, is fit to very much automobile audio and uses.
Single-chip microcomputer 130 comprises control unit 131, and the ANTENN AUDIO receive frequency of connection control unit 131 arranges module 132 and DC/DC Switching Power Supply frequency setting module 133:
The ANTENN AUDIO receive frequency arranges module 132, is connected with ANTENN AUDIO receiver module 110, is used for the frequency of control ANTENN AUDIO receiver module;
DC/DC Switching Power Supply frequency setting module 133, DC/DC Switching Power Supply 121 is provided with the external clock interface, and DC/DC Switching Power Supply frequency setting module 133 is connected with the external clock interface of DC/DC Switching Power Supply 121, is used for the frequency of control DC/DC Switching Power Supply;
Control unit 131 also is connected with memory 140, is used for the frequency according to ANTENN AUDIO receiver module 132, selects corresponding frequencies that the frequency of 133 module controls DC/DC Switching Power Supplies 121 is set by DC/DC Switching Power Supply frequency from memory 140.
Operation principle: allow the 121 frequency conversion work of DC/DC Switching Power Supply, DC/DC Switching Power Supply 121 is provided with the external clock interface, single-chip microcomputer 130 is as long as change the operating switch frequency that just can change DC/DC Switching Power Supply 121 to the incoming frequency of this external clock interface, DC/DC Switching Power Supply frequency setting module 133 comprises: pulse width modulation (Pulse Width Modulation, PWM) generator, control unit 131 utilizes the PWM generator to produce the external clock interface that different PWM frequency signals is given to DC/DC Switching Power Supply 121, and DC/DC Switching Power Supply 121 can be carried out work according to this PWM frequency signal.
In different radio reception frequency ranges, search Database Lists in the memory 140 by control unit 131, select only operating frequency, it is minimum to allow the influence of 121 pairs of ANTENN AUDIO receiver module 110 radio reception of DC/DC Switching Power Supply drop to, rather than is operated in simply on one or two operating frequency.
As an example, control unit 131 arranges module 132 by the ANTENN AUDIO receive frequency and ANTENN AUDIO receiver module 110 is set is operated in this frequency of 558kHz, control unit 131 is by the Database Lists of consults memory 140, determine that it is 400kHz that DC/DC Switching Power Supply frequency setting module 133 is sent the frequency signal of PWM, then the harmonic frequency of the PWM of DC/DC Switching Power Supply is 800kHz, 1600kHz so just can avoid fundamental frequency and harmonic wave that current wireless audio frequency receiver module 110 frequency 558kHz are caused interference.
Claims (3)
1. ANTENN AUDIO receiving system that is used for onboard system, it is characterized in that, comprise: single-chip microcomputer and the memory of ANTENN AUDIO receiver module, the power module with DC/DC Switching Power Supply, control ANTENN AUDIO receiver module frequency and DC/DC Switching Power Supply frequency, described single-chip microcomputer is connected with ANTENN AUDIO receiver module, DC/DC Switching Power Supply and memory respectively by serial ports, and described power module is connected with ANTENN AUDIO receiver module, single-chip microcomputer and memory respectively and powers.
2. the ANTENN AUDIO receiving system for onboard system according to claim 1 is characterized in that described single-chip microcomputer comprises control unit, and the ANTENN AUDIO receive frequency of connection control unit arranges module and DC/DC Switching Power Supply frequency setting module:
The ANTENN AUDIO receive frequency arranges module, is connected with the ANTENN AUDIO receiver module, is used for the frequency of control ANTENN AUDIO receiver module;
DC/DC Switching Power Supply frequency setting module is connected with the DC/DC Switching Power Supply, is used for the frequency of control DC/DC Switching Power Supply;
Control unit also is connected with memory, is used for the frequency according to the ANTENN AUDIO receiver module, selects corresponding frequencies by the frequency of DC/DC Switching Power Supply frequency setting module control DC/DC Switching Power Supply from memory.
3. the ANTENN AUDIO receiving system for onboard system according to claim 1 is characterized in that, described DC/DC Switching Power Supply is provided with the external clock interface, and described single-chip microcomputer is connected with the external clock interface of DC/DC Switching Power Supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320222955 CN203166892U (en) | 2013-04-27 | 2013-04-27 | Wireless audio reception apparatus used for vehicle system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320222955 CN203166892U (en) | 2013-04-27 | 2013-04-27 | Wireless audio reception apparatus used for vehicle system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203166892U true CN203166892U (en) | 2013-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320222955 Expired - Fee Related CN203166892U (en) | 2013-04-27 | 2013-04-27 | Wireless audio reception apparatus used for vehicle system |
Country Status (1)
| Country | Link |
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| CN (1) | CN203166892U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953822A (en) * | 2015-07-10 | 2015-09-30 | 广西师范大学 | Stable-voltage power supply circuit of vehicle-mounted controller and stable-voltage power supply device of vehicle-mounted controller |
| CN112187302A (en) * | 2020-09-25 | 2021-01-05 | 上汽大众汽车有限公司 | Method and system for removing electromagnetic interference PWM wave of AM signal of vehicle-mounted radio |
-
2013
- 2013-04-27 CN CN 201320222955 patent/CN203166892U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953822A (en) * | 2015-07-10 | 2015-09-30 | 广西师范大学 | Stable-voltage power supply circuit of vehicle-mounted controller and stable-voltage power supply device of vehicle-mounted controller |
| CN112187302A (en) * | 2020-09-25 | 2021-01-05 | 上汽大众汽车有限公司 | Method and system for removing electromagnetic interference PWM wave of AM signal of vehicle-mounted radio |
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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 |
Granted publication date: 20130828 Termination date: 20150427 |
|
| EXPY | Termination of patent right or utility model |