CN201430680Y - Vehicle-mounted DSP digital power amplifier - Google Patents
Vehicle-mounted DSP digital power amplifier Download PDFInfo
- Publication number
- CN201430680Y CN201430680Y CN2009200938990U CN200920093899U CN201430680Y CN 201430680 Y CN201430680 Y CN 201430680Y CN 2009200938990 U CN2009200938990 U CN 2009200938990U CN 200920093899 U CN200920093899 U CN 200920093899U CN 201430680 Y CN201430680 Y CN 201430680Y
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- power amplifier
- chip
- power
- dsp
- circuit
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Abstract
The utility model discloses an amplifier, in particular to a vehicle-mounted DSP (digital signal processor) digital power amplifier which comprises a sound source component, a power supply component,a power amplifier chip and a loudspeaker. The DSP digital power amplifier is characterized in that a microcontroller MCU conducts communication and data transmission with a DSP chip via a serial interface; the DSP chip analyzes the received data of the microcontroller MCU to set the parameter and controls an A/D and D/A converter chip; after reconverted into analog signals, sound source signals are sent to the power amplifier chip; the power amplifier chip amplifies the received signals and pushes the loudspeaker to work; a common mode inductance is mounted at the entry of a vehicle power; a transient voltage suppressor is arranged at each power entry in the circuit; and the grounded lines of the power supply, an analog circuit and a digital circuit are arranged separately and respectively. The utility model has the beneficial effects that the fluctuation influence of peak supply voltage which is instantaneously mutational can be restrained effectively; the anti-interference ability isstrong; and the amplifier has good static discharge protection effect, excellent popularization and application value and excellent market prospect.
Description
Technical field
The utility model relates to a kind of electronic circuit apparatus, more specifically to a kind of amplifier.
Background technology
Along with the raising of living standards of the people and the development gradually of entertainment product technology, the DSP digital power amplifier obtains popularizing more and more widely, because its efficient height also is applied on automobile.But from present applicable cases, its interference free performance is poor, and there are Pop-Pop sound in start, shutdown, have distortion, and antistatic performance is poor, the bad problem of dispelling the heat.
Summary of the invention
The purpose of this utility model is to overcome the deficiency of prior art, provides a kind of new construction vehicle-mounted DSP digital power amplifier.
The technical solution of the utility model is by microcontroller MCU control DSP digital processing chip, add high-precision A/D, the D/A conversion chip constitutes a kind of new power amplifier.
A kind of vehicle-mounted DSP digital power amplifier, comprise source of sound assembly, power supply module, power amplification chip, loud speaker, it is characterized in that microcontroller MCU is by serial line interface and dsp chip communication, the transmission data, dsp chip is received microcontroller MCU data setting parameter and is controlled A/D, D/A conversion chip, and sound source signal is carried out digitized processing, be converted to analog signal again after, be sent to the power amplifier chip, the power amplifier chip amplifies the signal of receiving and the promotion speaker operation; Be provided with common mode inductance in the vehicle power porch; Each power import is provided with Transient Suppression Diode in circuit; The circuit of power ground, analog circuit ground connection, digital circuit ground connection separately arranges that respectively anti-stop signal disturbs mutually.
The beneficial effects of the utility model are; can suppress the spike mains fluctuations influence of moment sudden change effectively; improve the EMC of product; the utility model circuit board is provided with good earth; antijamming capability is strong, and the power amplifier good heat dissipation has good electrostatic discharge (ESD) protection effect; can satisfy all kinds of vehicle grades and driver and conductor appreciation demand, have excellent popularization using value and good market prospects music.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model circuit block diagram.
Fig. 3 is the utility model simplified electrical circuit diagram 1.
Fig. 4 is the utility model simplified electrical circuit diagram 2.
Fig. 5 is the utility model simplified electrical circuit diagram 3.
Fig. 6 is the utility model simplified electrical circuit diagram 4.
Embodiment
Below in conjunction with accompanying drawing and instantiation the utility model is made detailed description further.
As shown in the figure, housing 1 is provided with fin 6, is provided with circuit board 5 in the housing 1, and circuit board 5 is provided with DSP process chip 2, A/D, D/A conversion chip 3, microcontroller MCU4, power amplifier chip 7 and is located on the sidewall near the housing 1 of fin 6; To improve radiating effect, the signal that reduces other devices disturbs; Microcontroller MCU4 as shown in Figure 6, passes through R by serial port and dsp processor communication
2, R
3Adopt I2C bus mode transmitting control commands to carry out data-signal to DSP and handle, as shown in Figure 4, DSP is by monitoring from A/D, D/A chip data SDAT
10, SDAT
11Come the voice data of accurate control figureization, it is optimized, the transmission data; DSP analyzes the microcontroller data of receiving and comes setup parameter, and control digital-to-analogue/modulus conversion chip; As shown in Figure 3, sound source signal enters A/D, D/A conversion chip through A1LP, A1LN, A1RN, A1RP, A2LP, A2LN, A2RP, A2RN, digital-to-analogue/modulus conversion chip is started working after receiving the microprocessor controls signal, sound source signal is carried out digitized processing and improve precision under the DSP effect, send to the power amplifier chip then; The power amplifier chip amplifies the signal of receiving and promotion loud speaker sounding; Bulk supply is provided by power supply.Whole housing 1 adopts aluminium alloy, and circuit board 5 contacts by the location hole large tracts of land with housing 1, has both guaranteed that power amplifier well contacts with fin, guarantees the heat radiation of high power device; Also guarantee simultaneously the good earth of circuit board, can have good ESD electrostatic discharge protection like this; Power import has increased Transient Suppression Diode through common mode inductance, filtering in the circuit, can suppress the influence of moment sudden change peak voltage so effectively, improves the EMC Electro Magnetic Compatibility of product; Increase common mode inductance in the vehicle power porch, can suppress common mode interference signal effectively, the interference that inhibition brings from power supply reduces noise, reduces distortion; Power supply module ground connection, analog circuit ground connection, digital circuit ground connection is separately strict, and lead arranges respectively, is connected with power supply module ground connection digital circuit ground connection and analog circuit ground connection are single-ended, improved the antijamming capability of product; In software design standard the power amplifier job order, sending, closing earlier when cutting off the power supply the analog output mouth, i.e. mute speaker, as shown in Figure 5, through R
35, R
39Difference control power amplifiers U
600Work or stop the Pop-pop sound in the time of can reducing to start shooting to greatest extent like this.
Claims (1)
1, a kind of vehicle-mounted DSP digital power amplifier, comprise source of sound assembly, power supply module, power amplifier chip, loud speaker, it is characterized in that microcontroller MCU is by serial line interface and dsp chip communication, the transmission data, dsp chip is received microcontroller MCU data setting parameter and is controlled A/D, D/A conversion chip, sound source signal is carried out digitized processing, again after being converted to analog signal, be sent to the power amplifier chip, the power amplifier chip amplifies the signal of receiving and the promotion speaker operation; Be provided with common mode inductance in the vehicle power porch, each power import is provided with Transient Suppression Diode in circuit; Power ground, analog circuit ground connection, the circuit of digital circuit ground connection is separately arranged respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200938990U CN201430680Y (en) | 2009-06-26 | 2009-06-26 | Vehicle-mounted DSP digital power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200938990U CN201430680Y (en) | 2009-06-26 | 2009-06-26 | Vehicle-mounted DSP digital power amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201430680Y true CN201430680Y (en) | 2010-03-24 |
Family
ID=42034419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200938990U Expired - Fee Related CN201430680Y (en) | 2009-06-26 | 2009-06-26 | Vehicle-mounted DSP digital power amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201430680Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605305A (en) * | 2013-11-12 | 2014-02-26 | 吉林市航盛宏宇电子有限公司 | Pedestrian sound prompting apparatus for new energy vehicle |
-
2009
- 2009-06-26 CN CN2009200938990U patent/CN201430680Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605305A (en) * | 2013-11-12 | 2014-02-26 | 吉林市航盛宏宇电子有限公司 | Pedestrian sound prompting apparatus for new energy vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100324 Termination date: 20130626 |