CN201036003Y

CN201036003Y - Background music playing device

Info

Publication number: CN201036003Y
Application number: CNU2007200351427U
Authority: CN
Inventors: 朱翠玲; 方明
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-19
Filing date: 2007-03-19
Publication date: 2008-03-12
Anticipated expiration: 2017-03-19

Abstract

The utility model relates to a music playing system, in particular to a background music playing device. The device uses a FLASH digital flash memory chip to store music data, and the music is played back through the D/A conversion, the voltage amplification, the power amplification and the speaker under the support and the control of a power supply system and a controlling system. The utility model solves the problems that the cost of the prior art is high, the structure is complex, the wiring is required, an independent playing cannot be realized, and the utility model has the advantages that the structure is simple, the construction cost is low, and the wiring is not required, thereby playing independently.

Description

The background music playing device

Technical field

The utility model relates to a kind of music playing system, is specially a kind of background music playing device.

Background technology

At present, known intelligent building background music system is made up of loudspeaker unit, Structured Cabling System, backstage control center, and control center has comprised subsystems such as source of sound editing system, broadcast system, power amplification system, control system again.Its shortcoming is: 1, system complex, involve great expense, and limited the application in medium-sized and small enterprises and average family greatly; 2, need independently controls playing center; 3, need carry out structured wiring in advance, the building that having fitted up finishes comes into operation installs difficulty additional; 4, connected up, the influence of control and cost, can not accomplish every broadcast unit independent play-out.

The utility model content

But problem to be solved in the utility model provides a kind of background music playing device of simple in structure, cheap, the independent play-out that need not connect up.

The technical scheme that the utility model adopted is: the background music playing device, comprise digital music storage circuit F, Play Control circuit C, keyboard K, USB interface, LCD LCD, the D/A change-over circuit, voltage amplifier circuit V, power amplification circuit AMP, loudspeaker S and power supply PWR, wherein, the music data input Play Control circuit C that stores among the digital music storage circuit F, produce output signal and pass through the D/A change-over circuit successively, voltage amplifier circuit V, power amplification circuit AMP handles, broadcast music by loudspeaker S at last, Play Control circuit C also accepts keyboard K, the input of USB interface, and work state information is outputed to LCD LCD show.Described system module is encapsulated in the 86*86 standard electrical terminal box.220V veneer switch also can be installed in the described standard electrical terminal box.

The good effect that the utility model had is:

1, simple in structure, cheap, each unit works alone, and does not need to build wiring, greatly reduces use cost;

2, adopt the standardized building electric size, the 86mm*86mm terminal box of can packing into is very easy to design, construction and use;

3, low-power consumption.As: use two joint AA alkaline batteries, sustainable broadcast 100 hours.If play 1 hour average every day, can use continuously more than three months, annual need be changed the 3-4 primary cell, not need other any maintenance works.

The model of using small-sized interchange one direct current supply convertor power supply also is provided in addition;

4, can upgrade music file arbitrarily by USB interface, music file can be contents such as any classical music, contemporary music, popular song, children stories, English study word, news report, language teaching, and the people who is fit to all ages and classes, different educational background, different time, different hobbies uses;

5, for fit up and use in building, can increase easily and use native system by installing the 86mm*86mm terminal box additional.

Description of drawings

Fig. 1 is an electrical structure diagram of the present utility model.

Fig. 2 is a physical construction synoptic diagram of the present utility model.

Fig. 3 is the physical construction synoptic diagram of another embodiment of the utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

In order to overcome the deficiency of existing intelligent building background music system, the utility model is designed to a kind of intelligentized background music Play System, use FLASH numeral flash chip to store music data, under the support and control of power-supply system and control system, music is come out by D/A conversion, voltage amplification, power amplification, loudspeaker.Native system adopts technology such as SMA surface encapsulation element, large scale digital circuit, liquid crystal display, small size high sensitivity loudspeaker to finish the miniaturization work of system, independently cellular system is packaged into the standardized building electric size, the 86mm*86mm terminal box of can packing into, use supporting panel.The digital music of its storage inside can use PC to change by USB interface, refreshes and writes again.

Circuit structure as shown in Figure 1, the background music playing device comprises digital music storage circuit F, Play Control circuit C, keyboard K, USB interface, LCD LCD, the D/A change-over circuit, voltage amplifier circuit V, power amplification circuit AMP, loudspeaker S and power supply PWR, wherein, the music data input Play Control circuit C that stores among the digital music storage circuit F, produce output signal and pass through the D/A change-over circuit successively, voltage amplifier circuit V, power amplification circuit AMP handles, broadcast music by loudspeaker S at last, Play Control circuit C also accepts keyboard K, the input of USB interface, and work state information is outputed to LCD LCD show.

Digital music storage circuit F in the utility model adopts present MP3 music player Flash flash memory commonly used, but digital audio format data such as store M P3, WMA, WAV, MIDI; Play Control circuit C, LCD LCD all adopt present MP3 music player assembly commonly used; The D/A change-over circuit is that the digital music signal that will receive converts analog music signals to, after amplifying through voltage amplifier circuit P, power amplification circuit AMP, promotes loudspeaker S pronunciation.Power supply PWR provides needed electric power for each assembly, different according to product classification and user's request, and power supply PWR can be: the battery of models such as AA, AAA; Perhaps small-sized transformer rectifier circuit; Perhaps switchette power supply etc. is multi-form.

Practical structures of the present utility model as shown in Figure 2, among the figure, 1.86*86 standard electrical element panels; 2. small intelligent background music system module; 3. loudspeaker is used to play sound; 4. LCD is used to indicate working state of system; 5. play a stop key, short in this key, system will---" play and closed automatically then in 30 minutes "---" play and closed automatically then in 60 minutes "---" continues to play " sequential loop between four kinds of states " play and closed automatically then in 10 minutes "; Long by 1 second kind hard closing power supply, stop to play; 6. play the preference pattern key.Short in this key, system will jump to next play list; Long by this key, system will be between allusion-standard-four kinds of play mode of jazz-movie theatre sequential loop; 7. volume reduces key, clicks broadcast sound volume and reduces one-level; 8. volume increases key, and clicking broadcast sound volume increases one-level; 9. small USB interface is used for upgrading the music data of FLASH storer.

In the actual product, the concrete function of four buttons of 5.6.7.8 can carry out certain adjustment and change according to different needs.

At the building of having fitted up, the utility model also provides the substituted type product at the veneer switch.As shown in Figure 3, this product also has an independently veneer electric switch except holding Intellectual faculty background musical system in standardization 86*86 architectural electricity size, the user only need pull down former veneer switch, wiring is inserted the veneer switch of this product, reinstall former magazine then and get final product.Among Fig. 3: 10.86*86 standard electrical element panels; 11.220V veneer switch; 12, small intelligent background music system module.

Claims

1. background music playing device, comprise digital music storage circuit F, Play Control circuit C, keyboard K, USB interface, LCD LCD, the D/A change-over circuit, voltage amplifier circuit V, power amplification circuit AMP, loudspeaker S and power supply PWR, it is characterized in that: the music data input Play Control circuit C that stores among the digital music storage circuit F, produce output signal and pass through the D/A change-over circuit successively, voltage amplifier circuit V, power amplification circuit AMP handles, broadcast music by loudspeaker S at last, Play Control circuit C also accepts keyboard K, the input of USB interface, and work state information is outputed to LCD LCD show;

Described system module is encapsulated in the 86*86 standard electrical terminal box.

2. background music playing device as claimed in claim 2 is characterized in that: 220V veneer switch also is housed in the described standard electrical terminal box.