CN202487160U - Low-power vehicle information entertainment system - Google Patents
Low-power vehicle information entertainment system Download PDFInfo
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- CN202487160U CN202487160U CN2012200237884U CN201220023788U CN202487160U CN 202487160 U CN202487160 U CN 202487160U CN 2012200237884 U CN2012200237884 U CN 2012200237884U CN 201220023788 U CN201220023788 U CN 201220023788U CN 202487160 U CN202487160 U CN 202487160U
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Abstract
Provided is a low-power vehicle information entertainment system, comprising a power supply management unit, a man-machine interaction processing unit, a central multimedia processor unit, a peripheral audio and video input and output processing unit, a display module and a power amplifier module, wherein the power supply management unit, the man-machine interaction processing unit, the peripheral audio and video input and output processing unit, the display module and the power amplifier module are respectively in connection with the central multimedia processor unit and are arranged in a metal casing; the power supply management unit comprises a power supply management circuit; the power supply management circuit comprises a one-chip microcomputer in connection with a backlight; the power amplifier module comprises a D type digital power amplifier integrated circuit. The low-power vehicle information entertainment system does not need to be provided with a radiator but the metal casing is directly utilized for heat dissipation. The power supply management system closes system power supply in a system standby state and reduces self power consumption. The low-power vehicle information entertainment system substantially minimizes energy consumption.
Description
Technical field:
The utility model relates to electricity field, relates in particular to the Voice & Video playing device, particularly a kind of low-power consumption vehicle-mounted information and entertainment system.
Background technology:
In the prior art; Vehicle entertainment system is supported the input of multiple audio frequency, video; Such as being connected of wireline equipments such as CD/DVD, USB/SD card and iPod player; And support the connection of wireless networks such as bluetooth/WiFi, support the GPS navigation module, support input of forward/rear camera video and reception of Mobile Digital TV etc.The user is also abundanter to system's audio treatment requirement, even will reach the effect of home theater.Simultaneously, along with developing rapidly of automotive electronic technology, vehicle entertainment system is accompanied by function and is on the increase enhancing also in continuous upgrading, and system becomes and becomes increasingly complex, and power consumption is also increasing, to the also constantly increase of consumption of on-vehicle battery.
Summary of the invention:
The purpose of the utility model is to provide a kind of low-power consumption vehicle-mounted information and entertainment system, and described this low-power consumption vehicle-mounted information and entertainment system will solve the more technical matters of vehicle entertainment system consumed power in the prior art.
This low-power consumption vehicle-mounted information and entertainment system of the utility model; Comprise PMU, man-machine interaction processing unit, central multimedia processor unit, the input and output of peripheral hardware audio frequency and video and processing unit, display module and power amplifier module; Described PMU, man-machine interaction processing unit, the input and output of peripheral hardware audio frequency and video are connected with described central multimedia processor unit respectively with processing unit, display module and power amplifier module; Wherein, Described PMU, man-machine interaction processing unit, central multimedia processor unit, the input and output of peripheral hardware audio frequency and video and processing unit, display module and power amplifier module all are arranged in the metal shell; Include Switching Power Supply and an electric power management circuit in the PMU; Described electric power management circuit includes a single-chip microcomputer; Described single-chip microcomputer is connected with the LED-backlit source, and input and output of peripheral hardware audio frequency and video and processing unit comprise blue tooth interface, USB interface, SD flash memory card interface and audio frequency and video input interface, includes D class digital power amplifier integrated circuit in the power amplifier module.
Further, described central multimedia processor unit is connected with navigation module.
Further, described central multimedia processor unit is connected with storer.
Concrete; Switching Power Supply in the utility model, electric power management circuit, single-chip microcomputer, man-machine interaction processing unit, central multimedia processor unit, display module, power amplifier module and navigation module all can adopt well-known schemes of the prior art; Relevant above-mentioned known solution; Those skilled in the art all understands, and repeats no more at this.
The principle of work of the utility model is: power amplifier module is realized power amplification through D class digital power amplifier integrated circuit; D class digital power amplifier integrated circuit power is big, heating is low; Need not to be provided with heating radiator; PMU, man-machine interaction processing unit, central multimedia processor unit, the input and output of peripheral hardware audio frequency and video and processing unit, display module and power amplifier module all directly utilize the metal shell heat radiation, occupy little space.Switching Power Supply is connected with electric power management circuit; When electric power management circuit is in holding state in system; Shutoff comprises the power supply of whole systems ingredient of central multimedia processor unit, the input and output of peripheral hardware audio frequency and video and processing unit, internal memory and display module; Through reducing the dominant frequency of single-chip microcomputer in the electric power management circuit own, reduce the oneself power consumption of electric power management circuit simultaneously.The button that utilization is connected on the single-chip microcomputer carries out waking up of system through interrupt function.Central authorities' multimedia processor unit controls radio, bluetooth handsfree phone and display part.Central authorities' built-in digital signal processing DSP function in multimedia processor unit, the audio/video flow file that can be used for decoding comprises the audio/video flow file from external USB interface and SD flash card, for example the audio/video flow of forms such as MP3, MP4, WMA, AVI.The brightness in the Single-chip Controlling button LED-backlit source in the electric power management circuit; Also control simultaneously the backlight illumination of liquid crystal display in the display module; And backlight according to the independent adjusting of zone, function and state, for example, when the radio reception state; Demonstration and whole shutoff backlight that all and function of radio receiver have nothing to do are with saves current consumption.Also be connected with ambient light sensor on the single-chip microcomputer, according to the backlight illumination that automatically adjusts of illumination brightness in the car.At Night, reduce backlight illumination automatically, can reduce power consumption.Utilize navigation module can cook up the most fuel-efficient and the fastest running route, help the user to cut down the consumption of energy.
The utility model and prior art are compared, and its effect is actively with tangible.The utility model adopts D class digital power amplifier integrated circuit to realize power amplification in the power amplifier module of vehicle-mounted information and entertainment system, and it is low to generate heat, and need not to be provided with heating radiator, can directly utilize the metal shell heat radiation of system, occupies little space.Switching Power Supply is connected with electric power management circuit, under the system standby state, and the power supply of electric power management circuit shutdown system, and reduce oneself power consumption.Central authorities multimedia processor unit connects the input in plug and play audio frequency and video source, has replaced traditional CD/DVD type, has saved complicated movement mechanism and various motor, has improved the stability of system, has reduced power consumption.The brightness in the Single-chip Controlling button LED-backlit source in the electric power management circuit can and be regulated backlightly separately according to zone, function and state, and can regulate backlight illumination automatically according to environment inside car light, has also reduced energy consumption.Utilize navigation module can cook up the most fuel-efficient and the fastest running route, help the user to cut down the consumption of energy.The low-power consumption vehicle-mounted information and entertainment system of the utility model has significantly reduced energy consumption.
Description of drawings:
Fig. 1 is the general structure block diagram of a kind of low-power consumption vehicle-mounted information and entertainment system of the utility model.
Fig. 2 is the schematic diagram of the electric power management circuit in the utility model low-power consumption vehicle-mounted information and entertainment system.
Fig. 3 is the schematic diagram of the power amplifier module in the utility model low-power consumption vehicle-mounted information and entertainment system.
Fig. 4 is the schematic diagram of the inorganic core digital radio receiver among the embodiment of the utility model low-power consumption vehicle-mounted information and entertainment system
Fig. 5 is the schematic diagram of the LED-backlit source regulating circuit among the embodiment of the utility model low-power consumption vehicle-mounted information and entertainment system.
Embodiment
As shown in Figure 1; The utility model low-power consumption vehicle-mounted information and entertainment system; Comprise PMU 2, man-machine interaction processing unit, central multimedia processor unit 1, the input and output of peripheral hardware audio frequency and video and processing unit, display module 3 and power amplifier module 4; Described PMU 2, man-machine interaction processing unit, the input and output of peripheral hardware audio frequency and video are connected with described central multimedia processor unit 1 respectively with processing unit, display module 3 and power amplifier module 4; Wherein, Described PMU 2, man-machine interaction processing unit, central multimedia processor unit 1, the input and output of peripheral hardware audio frequency and video and processing unit, display module 3 and power amplifier module 4 all are arranged in the metal shell; Include Switching Power Supply 21 and an electric power management circuit 22 in the PMU 2, described electric power management circuit 22 includes a single-chip microcomputer, and described single-chip microcomputer is connected with the LED-backlit source; Input and output of peripheral hardware audio frequency and video and processing unit comprise bluetooth communication module 8, USB interface, SD flash memory card interface and audio frequency and video input interface 10, include D class digital power amplifier integrated circuit in the power amplifier module 4.
Further, described central multimedia processor unit 1 is connected with navigation module 6.
Further, described central multimedia processor unit 1 is connected with flash memory 71 and random access memory 72.
Concrete, the man-machine interaction processing unit comprises a matrix press-key 23, matrix press-key 23 is connected with central multimedia processor unit 1.
The output terminal of power amplifier module 4 is connected with loudspeaker 5.
Central authorities multimedia processor unit 1 is connected with radio reception tuner 11 and Sound Processor Unit 12.Sound Processor Unit 12 adopts the PT7313 cake core.
As shown in Figure 2, be provided with one 8 single-chip microcomputer in the electric power management circuit 22, power management and human-computer interaction function when special disposal is static.When system during at holding state; Turn-off the whole power supplies that comprise radio reception part, central multimedia processor unit 1, internal memory and display module 3 on the one hand; Itself is also through reducing the dominant frequency of single-chip microcomputer simultaneously; Be operated in extremely low 32K frequency range, the current drain of complete machine is controlled at below the 0.7MA like this.Simultaneously can utilize button to carry out waking up of system with interrupt function.
Single-chip microcomputer is selected the MB95200 microprocessor of Fuji Tsu for use in the present embodiment, output 3.3V, 1.8V, 5V and 14V.The 5V power supply adopts MB95200 to connect the TPS40200 power management chip of Texas Instrument, and plug-in CMOS manages, and output current can reach 1A, and input voltage can reach 52V.3.3VT, 1.8V power supply adopts the NCP1529 power management chip of ON company, output current reaches 1A, the cut-off current of most critical is controlled at 0.3uA.
The MB95200 microprocessor is the MAX9708 power amplifier integrate circuit power supply in the power amplifier module 4.
As shown in Figure 3, the MAX9708 power amplifier integrate circuit 41 of the U.S. letter of power amplifier module 4 employings company, stereo output power reaches 2X21W; Power amplifier output conversion efficiency is up to 87%, and PSRR is up to 80DB, and the most key is to adopt band spectrum modulation; Very low EMI performance need not external filter inductance; Occupy little space, need not heat radiator dedicated.Save heavy heating radiator, improved usefulness.
The input end input in the sound signal of left and right acoustic channels left side of MAX9708 power amplifier integrate circuit 41 from Fig. 3 is amplified and output protection circuit through over level control, D class, outputs to loudspeaker 5 from the right side.
As shown in Figure 4, central multimedia processor unit 1 adopts ARM9 type CPU, and built-in DSP function is integrated multimedia processor and central control unit, control radio, bluetooth handsfree phone, media, display module 3.The DSP audio/video flow file that is used for decoding comprises the audio/video flow file from external USB equipment 91, SD storage card 92 and other PnP device 93, MP3 for example, and MP4, WMA, the AVI form is at interior audio/video flow.ARM9 type CPU is connected with flash memory 71 and random access memory 72, also is connected with bluetooth communication module 8, audio frequency IO interface 94 and display screen 3.
As shown in Figure 5; In the regulating circuit of LED-backlit source; Be connected with triode separately on 3 output terminals of the MB95200 microprocessor in electric power management circuit 22; The emitter of triode connects the back light member 25 of back light member 24, the knob in the system and the button of liquid crystal display in the display module 3 respectively; Regulate the size of current that outputs to transistor base by the MB95200 microprocessor according to system state, thereby control outputs to the size of current of back light member, regulate above-mentioned back light member separately according to zone, function and state.
Claims (3)
1. low-power consumption vehicle-mounted information and entertainment system; Comprise PMU, man-machine interaction processing unit, central multimedia processor unit, the input and output of peripheral hardware audio frequency and video and processing unit, display module and power amplifier module; Described PMU, man-machine interaction processing unit, the input and output of peripheral hardware audio frequency and video are connected with described central multimedia processor unit respectively with processing unit, display module and power amplifier module; It is characterized in that: described PMU, man-machine interaction processing unit, central multimedia processor unit, the input and output of peripheral hardware audio frequency and video and processing unit, display module and power amplifier module all are arranged in the metal shell; Include Switching Power Supply and an electric power management circuit in the PMU; Described electric power management circuit includes a single-chip microcomputer; Described single-chip microcomputer is connected with the LED-backlit source; Input and output of peripheral hardware audio frequency and video and processing unit comprise blue tooth interface, USB interface, SD flash memory card interface and audio frequency and video input interface, include D class digital power amplifier integrated circuit in the power amplifier module.
2. low-power consumption vehicle-mounted information and entertainment system as claimed in claim 1 is characterized in that: described central multimedia processor unit is connected with navigation module.
3. low-power consumption vehicle-mounted information and entertainment system as claimed in claim 1 is characterized in that: described central multimedia processor unit is connected with storer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200237884U CN202487160U (en) | 2012-01-18 | 2012-01-18 | Low-power vehicle information entertainment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200237884U CN202487160U (en) | 2012-01-18 | 2012-01-18 | Low-power vehicle information entertainment system |
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| Publication Number | Publication Date |
|---|---|
| CN202487160U true CN202487160U (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200237884U Expired - Fee Related CN202487160U (en) | 2012-01-18 | 2012-01-18 | Low-power vehicle information entertainment system |
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| CN (1) | CN202487160U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042982A (en) * | 2012-12-27 | 2013-04-17 | 深圳市路畅科技股份有限公司 | Vehicular navigation system and energy saving control method therefor |
| CN103219031A (en) * | 2012-01-18 | 2013-07-24 | 延锋伟世通汽车电子有限公司 | Low-power vehicle-mounted information entertainment system |
-
2012
- 2012-01-18 CN CN2012200237884U patent/CN202487160U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219031A (en) * | 2012-01-18 | 2013-07-24 | 延锋伟世通汽车电子有限公司 | Low-power vehicle-mounted information entertainment system |
| CN103042982A (en) * | 2012-12-27 | 2013-04-17 | 深圳市路畅科技股份有限公司 | Vehicular navigation system and energy saving control method therefor |
| CN103042982B (en) * | 2012-12-27 | 2015-11-11 | 深圳市路畅科技股份有限公司 | The energy-saving control method of onboard navigation system and onboard navigation 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 |
Granted publication date: 20121010 Termination date: 20150118 |
|
| EXPY | Termination of patent right or utility model |