CN201374808Y - Automatic phantom power supply selected microphone distributor - Google Patents
Automatic phantom power supply selected microphone distributor Download PDFInfo
- Publication number
- CN201374808Y CN201374808Y CN200820206131U CN200820206131U CN201374808Y CN 201374808 Y CN201374808 Y CN 201374808Y CN 200820206131 U CN200820206131 U CN 200820206131U CN 200820206131 U CN200820206131 U CN 200820206131U CN 201374808 Y CN201374808 Y CN 201374808Y
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- microphone
- circuit
- phantom power
- power supply
- distributor
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Abstract
The utility model discloses an automatic phantom power supply selected microphone distributor, comprising a detecting and input output circuit, a single chip computer system, a relay driving circuit, a status display circuit and a communication interface circuit. The single chip computer system detects the microphone output interface phantom voltage, and the relay driving circuit controls the relay according to the detecting result; then the voltage is coupled to other microphone through an one to one audio frequency isolation transformer; and at last, the status display circuit can achieve the phantom power supply indication of each microphone output channel. The networking cluster control of multiple microphone distributors also can be achieved by using the communication interface circuit. The distributor can ensure that any one of the selected sound console can provide phantom power supply, and different sound consoles on the same channel can provide phantom power supply at the same time. The phantom power supply of different sound consoles can not be connected in series or in parallel, which are completely isolated, and will not influence the sound consoles. The system also can be controlled through computer connection to realize the functions of remote control and real time detection.
Description
Technical field
The utility model relates to a kind of electronic equipment realization microphone input channel of utilizing and carries out the signal allocation transmission, and has the microphone distributor that automatic mirage electric separation is selected.
Background technology
In at present domestic arenas sound reinforcement system, often dispose simulation sound console and digital sound console, two cover tuning control desks can work alone, and also can realize backuping each other.This just requires microphone signal is distributed to two sound consoles simultaneously.But when reality was used, capacitor microphone need load phantom power, otherwise can't normally use, and product in the market, the providing or provide (active microphone distributor) of microphone mirage electricity from the microphone distributor, or have wherein that a sound console provides.Like this, can cause following phenomenon, as being provided by the microphone distributor, then can not control on sound console, operation is trouble; If provided by sound console wherein, but an other sound console can not provide, can not control, and, for the sound console that the illusion electricity is provided,, all need to open, so that can provide Phantom power to capacitor microphone no matter use or do not use.
The utility model content
At above deficiency, the utility model provides a kind of automatic Phantom Power to select the microphone distributor, and it comprises detection and imput output circuit, microcontroller system, relay drive circuit, status display circuit and communication interface circuit.
8 detect and imput output circuit identical, respectively take an autonomous channel, each detection and imput output circuit comprise tetrad switch relay K1,1 to 1 isolation audio frequency transformer L1 and two voltage comparators.Wherein, voltage comparator adopts the high-level DC voltage comparator circuit to detect, one is the voltage comparator that U1A and peripheral cell thereof constitute, be used for detecting the direct voltage whether " OUT1A+ " has high level, another is that U1B and peripheral cell thereof constitute voltage comparator, is used for detecting the direct voltage whether " OUT1B+ " has high level.
Microcontroller system is realized state computing and control, mirage voltage according to the microphone output channel, control microphone input channel inserts the phantom power of which microphone output channel, comprises that monolithic computer control centre that a U101 and peripheral cell thereof constitute and U103 and peripheral cell thereof constitute the EEPROM holder.
Relay drive circuit is a big current driving circuit of U301, is used to drive the relay of 8 passages.
Status display circuit is realized the phantom power indication of each microphone output channel, comprises state display driver circuit, phantom power indicated number pipe LED1～LED16 and the system power supply indicated number pipe LED17 of U201 and U202 and peripheral cell construction system thereof.
The communication interface circuit is realized the communication between each machine, and the communication interface circuit is the RS485 bus, is made of U102 and peripheral cell thereof.
Two microphone output channels adopt the output that is coupled of 1 to 1 audio frequency isolating transformers.
This is the beneficial effect of Phantom Power selection microphone distributor automatically:
1) the mirage electricity is provided by signal output arbitrarily, and system can detect and switch automatically, makes any sound console that connects all can provide phantom power, makes that the tuner's is simple to operate;
2) the different sound consoles of same passage can provide the mirage electricity simultaneously, and the mirage electricity of different sound consoles can be not in series or in parallel with each other, isolate fully, can not impact sound console;
3) system can connect control by computer, realizes remote control control and real-time detection function.
Description of drawings
Fig. 1 selects microphone distributor schematic diagram for automatic mirage electric separation;
Fig. 2 selects microphone dispenser system pie graph for automatic mirage electric separation;
Fig. 3 is for detecting and imput output circuit figure;
Fig. 4 is the microcontroller system circuit diagram;
Fig. 5 is relay drive circuit figure;
Fig. 6 is status display circuit figure;
Fig. 7 is the communication interface circuit diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is further set forth.
The microphone distributor realizes that the principle analysis that automatic mirage electric separation is selected sees Fig. 1 for details, and microcontroller system detects the mirage voltage of microphone output interface A and microphone output B, according to testing result control relay JK.For example, microphone output interface A has mirage voltage, and then relay discharges, and the microphone input interface is connected with microphone output interface A through the normally closed switch of relay, and simultaneously, the input signal of microphone is coupled to microphone output interface B by 1 to 1 audio frequency isolating transformer; If microphone output interface B has mirage voltage, then relay adhesive, the microphone input interface is connected with microphone output interface B through the normal open switch of relay, simultaneously, the input signal of microphone is coupled to microphone output interface A by 1 to 1 audio frequency isolating transformer, no matter phantom power by which output channel is provided, and output channel A has identical microphone pickup signal with output channel B, because its signal provides by the coupling of L audio frequency isolating transformer.
Automatically Phantom Power selects the formation of microphone distributor to see Fig. 2 for details, automatic mirage electric separation is selected the microphone distributor and is comprised 5 parts, is respectively: detection and imput output circuit, microcontroller system circuit, relay drive circuit, status display circuit and communication interface circuit.
Detection and building of imput output circuit are seen Fig. 3 for details, and every automatic mirage electric separation is selected the microphone distributor 8 autonomous channels, and this figure is the detection and the imput output circuit of passage 1, and other passage is identical.JK1 is the tetrad switch relay, L1 is 1 to 1 isolation audio frequency transformer, U1A and peripheral cell thereof constitute voltage comparator, be used for detecting the direct voltage whether " OUT1A+ " has high level, U1B and peripheral cell thereof constitute voltage comparator, are used for detecting the direct voltage whether " OUT1B+ " has high level.2 of JK1,3,4 normally closed switch terminals connect the A output channel of distributor, 6 of JK1,7,8 normal open switch terminals connect the B output channel of distributor, the input channel of microphone signal is connected 10 of JK1,11,12 switch terminal, the U1A comparator inputs to microcontroller system (having high-level DC voltage to judge that promptly this passage has mirage) with the high-level DC voltage state of output channel A by " NET1A ", and the U1B comparator inputs to microcontroller system (having high-level DC voltage to judge that promptly this passage has mirage) with the high-level DC voltage state of output channel B by " NET1B ".Microcontroller system is according to judging whether output channel A and output channel B have mirage voltage to come adhesive or the release of control relay JK1, if adhesive, then the input channel of microphone directly links to each other with output channel B, the straight-through input to microphone of mirage electricity of output channel B; If discharge, then the input channel of microphone directly links to each other with output channel A, the straight-through input to microphone of mirage electricity of output channel A.
Building of microcontroller system circuit sees Fig. 4 for details, selects the control section of microphone distributor for automatic mirage electric separation, realizes state computing and control.The function of each element is: U101 and peripheral cell thereof constitute microcontroller system, and as the control centre of this device, U103 and peripheral cell thereof constitute the EEPROM holder, are used for the routine data of register system.
Building of relay drive circuit sees Fig. 5 for details, drive controlling is provided for the relay of 8 microphone channel, realizes adhesive or release.The function of each element is: U301 is the big current driving circuit of 8 passages, is used to drive the relay of 8 passages.
Building of status display circuit sees Fig. 6 for details, realizes the phantom power indication of each microphone output channel.The function of each element is: the state display driver circuit of U201 and U202 and peripheral cell construction system thereof, LED1～LED16 are phantom power indicated number pipe, and LED17 is a system power supply indicated number pipe.
Building of communication interface circuit sees Fig. 7 for details, realizes the communication between each machine.The function of each element is: U102 and peripheral cell thereof constitute the RS485 bus, are used for the networking of many microphone distributors, realize cluster control.
Claims (4)
1, the microphone distributor is selected in a kind of automatic Phantom Power, it is characterized in that it comprises 8 detections and imput output circuit, microcontroller system, relay drive circuit, status display circuit and communication interface circuit:
Described 8 detections and imput output circuit are identical, respectively take an autonomous channel, and each detection and imput output circuit comprise that tetrad switch relay K1,1 to 1 isolates audio frequency transformer L1 and two voltage comparators;
Microcontroller system is realized state computing and control, mirage voltage according to the microphone output channel, control microphone input channel inserts the phantom power of which microphone output channel, comprises that monolithic computer control centre that a U101 and peripheral cell thereof constitute and U103 and peripheral cell thereof constitute the EEPROM holder;
Relay drive circuit is a big current driving circuit of U301, is used to drive the relay of 8 passages;
Status display circuit is realized the phantom power indication of each microphone output channel, comprises state display driver circuit, phantom power indicated number pipe LED1～LED16 and the system power supply indicated number pipe LED17 of U201 and U202 and peripheral cell construction system thereof;
The communication interface circuit is realized the communication between each machine.
2, the microphone distributor is selected in automatic Phantom Power according to claim 1, it is characterized in that, described voltage comparator adopts the high-level DC voltage comparator circuit to detect, one is the voltage comparator that U1A and peripheral cell thereof constitute, be used for detecting the direct voltage whether " OUT1A+ " has high level, another is that U1B and peripheral cell thereof constitute voltage comparator, is used for detecting the direct voltage whether " OUT1B+ " has high level.
3, the microphone distributor is selected in automatic Phantom Power according to claim 1, it is characterized in that described communication interface circuit is the RS485 bus, is made of U102 and peripheral cell thereof.
4, the microphone distributor is selected in automatic Phantom Power according to claim 1, it is characterized in that, described two microphone output channels adopt the output that is coupled of 1 to 1 audio frequency isolating transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820206131U CN201374808Y (en) | 2008-12-26 | 2008-12-26 | Automatic phantom power supply selected microphone distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820206131U CN201374808Y (en) | 2008-12-26 | 2008-12-26 | Automatic phantom power supply selected microphone distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201374808Y true CN201374808Y (en) | 2009-12-30 |
Family
ID=41500890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200820206131U Expired - Lifetime CN201374808Y (en) | 2008-12-26 | 2008-12-26 | Automatic phantom power supply selected microphone distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201374808Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104918189A (en) * | 2015-06-30 | 2015-09-16 | 成都普创通信技术股份有限公司 | Microphone distributor |
| CN114786112A (en) * | 2022-06-22 | 2022-07-22 | 广州市保伦电子有限公司 | Equipment detection device of external phantom power supply simulation microphone |
-
2008
- 2008-12-26 CN CN200820206131U patent/CN201374808Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104918189A (en) * | 2015-06-30 | 2015-09-16 | 成都普创通信技术股份有限公司 | Microphone distributor |
| CN114786112A (en) * | 2022-06-22 | 2022-07-22 | 广州市保伦电子有限公司 | Equipment detection device of external phantom power supply simulation microphone |
| CN114786112B (en) * | 2022-06-22 | 2022-10-11 | 广州市保伦电子有限公司 | Equipment detection device of external phantom power supply simulation microphone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGZHOU LEAFUN CULTURE SCIENCE AND TECHNOLOGY CO Free format text: FORMER NAME: LEIFULL LIGHT + SOUND TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 510643 A410 room, Shenzhou Road, Science Town, Guangzhou hi tech Industrial Development Zone, Guangdong, 885 Patentee after: Guangzhou Leafun Culture Technology Co., Ltd. Address before: 510665, No. 1, North Tower, Nantian building, Tianhe Industrial Zone, Zhongshan Road, Guangzhou, Guangdong Patentee before: Guangzhou Leafun Acoustic-Optic Technology Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091230 |