CN204377082U - Controlled in wireless multi-media sound system - Google Patents
Controlled in wireless multi-media sound system Download PDFInfo
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- CN204377082U CN204377082U CN201420871953.0U CN201420871953U CN204377082U CN 204377082 U CN204377082 U CN 204377082U CN 201420871953 U CN201420871953 U CN 201420871953U CN 204377082 U CN204377082 U CN 204377082U
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Abstract
The utility model discloses a kind of controlled in wireless multi-media sound system, comprise casing and loudspeaker, described loudspeaker are arranged on casing, this controlled in wireless multi-media sound system also comprises wireless receiving module, central processing module, control module, power amplifier and signal input module, described wireless receiving module, central processing module and signal input module are arranged in casing, described control module is arranged on the control board of casing, described power amplifier is arranged on the power amplifier panel of casing, described wireless receiving module is electrically connected with central processing module, described signal input module is electrically connected with power amplifier by control module, described control module is electrically connected with central processing module, described loudspeaker are electrically connected with power amplifier.The utility model can realize every adjustment of controlled in wireless sound equipment, easy to operate, flexible, wide adaptability.
Description
Technical field
The utility model relates to a kind of controlled in wireless multi-media sound system, belongs to stereo set technical field.
Background technology
Existing multi-media sound system mainly increases wireless signal input module on the basis of common sound equipment, by the input such as computer, mobile phone radio sound source to wireless signal input module, utilizes computer, mobile phone to control the tone, volume etc. of sound equipment.This multi-media sound system just controls in signal source itself, does not regulate at sound system itself, and as regulated the tone of sound equipment, volume, then want manually to operate at the control panel of sound equipment, malfunction, adaptability is wideless.
Utility model content
The deficiency that the utility model exists to overcome prior art, provides a kind of controlled in wireless multi-media sound system.
The utility model is achieved by taking following technical scheme:
A kind of controlled in wireless multi-media sound system, comprise casing and loudspeaker, described loudspeaker are arranged on casing, this controlled in wireless multi-media sound system also comprises wireless receiving module, central processing module, control module, power amplifier and signal input module, described wireless receiving module, central processing module and signal input module are arranged in casing, described control module is arranged on the control board of casing, described power amplifier is arranged on the power amplifier panel of casing, described wireless receiving module is electrically connected with central processing module, described signal input module is electrically connected with power amplifier by control module, described control module is electrically connected with central processing module, described loudspeaker are electrically connected with power amplifier.
Preferably, described signal input module comprises bluetooth input circuit, USB digital signal input circuit and AUX input circuit, described bluetooth input circuit, USB digital signal input circuit and AUX input circuit are electrically connected with control module respectively, can be used for connecting the signal sources such as computer, CD player, DVD player, mobile phone, television set.
Preferably, described control module comprises signal switching circuit, tone circuit and volume control circuit, described signal input module is electrically connected with signal switching circuit, described signal switching circuit is electrically connected with tone circuit, described tone circuit is electrically connected with volume control circuit and central processing module respectively, described volume control circuit is electrically connected with power amplifier and central processing module, the channel of signal source is selected by signal switching circuit, carry out carrying out volume adjusting through volume control circuit after tone adjustment through tone circuit again and be transferred to power amplifier again, here tone regulates and volume adjusting is controlled by central processing module.
Preferably, this controlled in wireless multi-media sound system also comprises power module, and described power module is electrically connected with central processing module, control module and power amplifier, by power module for whole sound equipment provides power supply.
Preferably, described power module comprises power transformer, power rectifier circuit, current filtering circuit and power standby circuit, described power standby circuit is electrically connected with central processing module, described power transformer is electrically connected with power rectifier circuit, described power rectifier circuit is electrically connected with current filtering circuit, described electric source filter circuit is electrically connected with control module and power amplifier, power standby circuit is connected with external power source, for whole sound equipment provides standby power, power transformer is connected with external power source, external power source is accessed, rectification is carried out by power rectifier circuit through transformation, current filtering circuit is central processing module after carrying out filtering, control module and power amplifier provide power supply.
Preferably, this controlled in wireless multi-media sound system also comprises under-chassis, and described under-chassis is fixed on the bottom of casing, for casing is placed on different occasion.
Preferably, this controlled in wireless multi-media sound system also comprises phase-reversing tube, and described phase-reversing tube is arranged on casing, for strengthening the acoustical quality of whole sound equipment.
Compared with prior art, the beneficial effects of the utility model are: the utility model arranges wireless receiving module on sound equipment, receive the conditioning signal that external remote sends, control module is sent to after central processing module process, regulated and controled to be sent to loudspeaker through power amplifier again and to export to the source of sound that outside inputs by control module, every adjustment of controlled in wireless sound equipment can be realized, and do not need directly at the enterprising line operate of the control panel of sound equipment, easy to operate, flexible, wide adaptability.
Accompanying drawing explanation
Fig. 1 is the structural representation of controlled in wireless multi-media sound system of the present utility model;
Fig. 2 is the circuit block diagram of controlled in wireless multi-media sound system of the present utility model;
Fig. 3 is the circuit diagram of the control module of controlled in wireless multi-media sound system of the present utility model;
Fig. 4 is the power amplifier of controlled in wireless multi-media sound system of the present utility model and the circuit connection diagram of left and right loudspeaker;
Fig. 5 is the power amplifier of controlled in wireless multi-media sound system of the present utility model and the circuit connection diagram of earphone;
Fig. 6 is the power amplifier of controlled in wireless multi-media sound system of the present utility model and the circuit connection diagram of subwoofer loudspeaker;
Fig. 7 is the circuit diagram of the external signal transmitter of controlled in wireless multi-media sound system of the present utility model;
Fig. 8 is the wireless receiving module of controlled in wireless multi-media sound system of the present utility model and the circuit diagram of central processing module.
Embodiment
Below in conjunction with accompanying drawing, most preferred embodiment of the present utility model is described in detail.
As Fig. 1, shown in Fig. 2, the controlled in wireless multi-media sound system of the present embodiment comprises power amplifier 1, casing 2, loudspeaker 5, wireless receiving module, central processing module, control module 7 and signal input module 4, described wireless receiving module, central processing module and signal input module are arranged in casing 2, described control module is arranged on the control board 7 of casing 2, described power amplifier is arranged on the power amplifier panel of casing 2, described wireless receiving module is electrically connected with central processing module, described signal input module is electrically connected with power amplifier by control module, described control module is electrically connected with central processing module, described loudspeaker are electrically connected with power amplifier, by the conditioning signal that wireless receiving module reception external remote sends, control module is sent to after central processing module process, by control module to the source of sound inputted by signal input module regulate and control again through power amplifier be sent to loudspeaker export, every adjustment of controlled in wireless sound equipment can be realized.
In the present embodiment, as shown in Figure 2, described signal input module comprises bluetooth input circuit, USB digital signal input circuit and AUX input circuit, can be used for connecting the signal sources such as computer, CD player, DVD player, mobile phone, television set, described control module comprises signal switching circuit, tone circuit and volume control circuit, described bluetooth input circuit, USB digital signal input circuit and AUX input circuit are electrically connected with signal switching circuit respectively, described signal switching circuit is electrically connected with tone circuit, described tone circuit is electrically connected with volume control circuit and central processing module respectively, described volume control circuit is electrically connected with power amplifier and central processing module, the channel of signal source is selected by signal switching circuit, the signal that central processing module receives according to wireless receiving module is controlled tone circuit by signal deteching circuit, the tone of signal source is regulated, be sent to loudspeaker through power amplifier after controlling to carry out volume adjusting to signal source to volume control circuit to export.And the external external power source of power module, it comprises power transformer, power rectifier circuit, current filtering circuit and power standby circuit, described power standby circuit is electrically connected with central processing module, described power transformer is electrically connected with power rectifier circuit, described power rectifier circuit is electrically connected with current filtering circuit, described electric source filter circuit is electrically connected with control module and power amplifier, power standby circuit is connected with external power source, for whole sound equipment provides standby power, power transformer is connected with external power source, external power source is accessed, rectification is carried out by power rectifier circuit through transformation, current filtering circuit is central processing module after carrying out filtering, control module and power amplifier provide power supply.
In the present embodiment, this controlled in wireless multi-media sound system also comprises under-chassis 3 and phase-reversing tube 6, and described under-chassis 3 is fixed on the bottom of casing 2, for casing is placed on different occasion admittedly; Described phase-reversing tube 6 is arranged on casing 2, for strengthening the acoustical quality of whole sound equipment.
As shown in Figure 3, the control module of the present embodiment mainly adopts chip PT2313E, signal switching circuit, tone circuit and volume control circuit are integrated on this chip PT2313E, signal input circuit mainly contains bluetooth input circuit, USB digital signal input circuit and AUX input circuit, wherein, bluetooth input circuit is connected to 10,14 pin of chip PT2313E, and USB digital signal input circuit is connected to 9,13 pin of PT2313E, and AUX input circuit is connected to 11,15 pin of PT2313E.Carry out selection respective signal source by signal switching circuit after source of sound is transported to signal switching circuit and output to tone circuit, now, the adjustment signal that central processing module can receive according to wireless receiving module controls tone circuit and carries out tone adjustment to source of sound, source of sound is transferred to volume control circuit after tone regulates, the adjustment signal that central processing module can receive according to wireless receiving module controls the volume of volume control circuit to source of sound and regulates, and source of sound is sent to power amplifier after tone, volume adjusting.Tone circuit divides high pitch to regulate and bass regulates, and wherein, high pitch regulates frequency to be 10KHz, bass regulates frequency to be 100Hz, high low pitch joint amplitude ± 10dB, and source of sound delivers to volume control circuit again after tone circuit, volume adjusting amplitude is 0 ~ 40dB, and every grade is 2dB.Out deliver to 22,23,24,25 pin of PT2313E again from volume adjusting, 22,23 pin are that L/R sound channel exports, and 24,25 pin are mixed as bass exports.The control of chip PT2313E selects I2C mode to control the parameter of the inside to reach required audio.Take out signal as input at 6,7 pin of chip PT2313E and 16,17 foots, the data detected are delivered on central processing unit and are analyzed, and object rises for no signal just automatically to enter holding state in 20 minutes.
As shown in Figure 4, the power amplifier section of the present embodiment mainly comprises L/R high pass filter and L/R signal, power amplifier, wherein, L/R high-pass filtering is combined into second order high-pass filtering by 1U05,1C87,1C88,1C89,1C90,1R43,1R44,1R45,1R46, and L/R signal, power amplifier have come primarily of power amplifier chips 1U06/TDA7294.Sound source signal out enters L/R high-pass filtering afterwards by chip PT2313E, sound source signal after L/R high-pass filtering filters the frequency of below 180Hz, the frequency tone source signal of more than 180Hz is delivered to power amplifier chips 1U06/TDA7294 and is carried out signal and to amplify and after power amplification, 2,4 pin of chip TDA7294 output to left speaker and right loud speaker.Here, L/R high-pass filtering, L/R signal amplifier, L/R power amplifier are main sound channel path, and the power of main sound channel is 25W+25W/4ohm/THD1%.As shown in Figure 5, earphone signal takes out from 24,25 pin of chip PT2313E, amplify through 1U15/JRC4558, ear seat 1J03 is outputted to after amplification, when earphone inserts 1J03, the level of 7,10 pin of 1J03 drags down, and central processing unit detects that the output of woofer, left speaker and right loud speaker disconnects after inserting by earphone, only has earphone to have output.As shown in Figure 6, the source of sound input mode of subwoofer loudspeaker is: sound source signal is delivered to 1U07B after exporting mixing by chip PT2313E and carried out signal amplification, again after band pass filter 1U08/JRC4558, again through the high pass filter of one-level second order and the low pass filter of one-level second order, output to power amplifier amplifier through 1U10 Compositional balance.The TDA8950 digital power amplifier chip that power amplifier amplifier adopts NXP to produce, power output 150W (THD1%).
As shown in Figure 7, the external wireless reflector of the present embodiment, adopt the nRF51822 chip that NORDIC produces, chip is low-power consumption IC, and tranmitting frequency is 2.4GHz, and the alkaline battery that power supply employing 2 saves 1.5V is powered.Keypress function, SW1 switches for input, is respectively AUX → BLUETOOTH → USB → AUX.REM is the code switch of belt switch, long by for standby, clockwise for volume increases, counterclockwise for volume reduces.
As shown in Figure 8, the wireless receiving module of the present embodiment and central processing module by 2.4GHz wireless receiving circuit, central processing unit 1, central processing unit is 2-in-1 is called double-core central processing unit.Its principle is that 2.4GHz wireless launcher sends data, then delivers to central processing unit 1 (PTR5518) by 2.4GHz wireless receiving to data and process, after process again with central processing unit 2 communication.The operational mode of complete machine is controlled again respectively by central processing unit 2.
In the present embodiment, bluetooth input circuit, USB digital signal input circuit and AUX input circuit etc. are not made specifically described circuit and are all adopted universal circuit.
Claims (7)
1. a controlled in wireless multi-media sound system, comprise casing and loudspeaker, described loudspeaker are arranged on casing, characterized by further comprising wireless receiving module, central processing module, control module, power amplifier and signal input module, described wireless receiving module, central processing module and signal input module are arranged in casing, described control module is arranged on the control board of casing, described power amplifier is arranged on the power amplifier panel of casing, described wireless receiving module is electrically connected with central processing module, described signal input module is electrically connected with power amplifier by control module, described control module is electrically connected with central processing module, described loudspeaker are electrically connected with power amplifier.
2. controlled in wireless multi-media sound system according to claim 1, it is characterized in that described signal input module comprises bluetooth input circuit, USB digital signal input circuit and AUX input circuit, described bluetooth input circuit, USB digital signal input circuit and AUX input circuit are electrically connected with control module respectively.
3. controlled in wireless multi-media sound system according to claim 1, it is characterized in that described control module comprises signal switching circuit, tone circuit and volume control circuit, described signal input module is electrically connected with signal switching circuit, described signal switching circuit is electrically connected with tone circuit, described tone circuit is electrically connected with volume control circuit and central processing module respectively, and described volume control circuit is electrically connected with power amplifier and central processing module.
4. controlled in wireless multi-media sound system according to claim 1, characterized by further comprising power module, and described power module is electrically connected with central processing module, control module and power amplifier.
5. controlled in wireless multi-media sound system according to claim 4, it is characterized in that described power module comprises power transformer, power rectifier circuit, current filtering circuit and power standby circuit, described power standby circuit is electrically connected with central processing module, described power transformer is electrically connected with power rectifier circuit, described power rectifier circuit is electrically connected with current filtering circuit, and described electric source filter circuit is electrically connected with control module and power amplifier.
6. controlled in wireless multi-media sound system according to claim 1, characterized by further comprising under-chassis, and described under-chassis is fixed on the bottom of casing.
7. controlled in wireless multi-media sound system according to claim 1, characterized by further comprising phase-reversing tube, and described phase-reversing tube is arranged on casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420871953.0U CN204377082U (en) | 2014-12-31 | 2014-12-31 | Controlled in wireless multi-media sound system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420871953.0U CN204377082U (en) | 2014-12-31 | 2014-12-31 | Controlled in wireless multi-media sound system |
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| CN204377082U true CN204377082U (en) | 2015-06-03 |
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| CN201420871953.0U Active CN204377082U (en) | 2014-12-31 | 2014-12-31 | Controlled in wireless multi-media sound system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106851444A (en) * | 2016-12-29 | 2017-06-13 | 东莞产权交易中心 | Rotary sound box |
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2014
- 2014-12-31 CN CN201420871953.0U patent/CN204377082U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106851444A (en) * | 2016-12-29 | 2017-06-13 | 东莞产权交易中心 | Rotary sound box |
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Address after: 510000, Guangzhou, Guangdong province Huadu District charcoal step Feida Industrial Park Patentee after: GUANGZHOU FEIDA SOUND CO., LTD. Address before: 510000, Guangzhou, Guangdong province Huadu District charcoal step Feida Industrial Park Patentee before: Guangzhou Fidek Professional Audio Equipment Co., Ltd. |