A kind of T-shaped exchanger of conference system
Technical field
The utility model is related to conference system signal converting equipment technical field, the T-shaped friendship of particularly a kind of conference system
Parallel operation.
Background technology
Existing conference system, typically by conference host, several microphones or microphone, sound equipment and display device combine structure
Into, and all microphones and stereo set are all connected in conference host by jack structure, therefore the wiring of conference host is non-
It is often numerous and diverse, once some microphone breaks down, it is difficult to failure is cleared in time, because the jack of conference host is limited, therefore can not
Connection excessive microphone or microphone.
The content of the invention
In order to overcome the disadvantages mentioned above of prior art, the purpose of this utility model is to provide a kind of microphone extension connection side
Just, independent control is supported, the T-shaped exchanger of the conference system of two-way signaling input connection is supported.
The utility model solves the technical scheme that its technical problem used:
A kind of T-shaped exchanger of conference system, including T-shaped exchanger shell, wherein:In the T-shaped exchanger shell
Upper end is provided with microphone input interface, left and right to be provided at both ends with the input A interfaces that are connected with conference host corresponding ports and defeated
Go out B interface, the microphone input interface, input A interfaces and output B interface are both provided with 8 signal pins, the microphone
1st signal pins of input interface be grounding pin, the 2nd signal pins be power supply signal pin, the 3rd, the 4th signal pins be wheat
Gram air control signal pins, the 5th, the 6th signal pins be the positive output signal pin of audio, the 7th, the 8th signal pins be audio
Reverse input signal pin, the 1st signal pins of the microphone input interface are by inputting the 1st of A interfaces or output B interface
Signal pins connection ground connection, the 2nd signal pins of the microphone input interface are by inputting the 2nd of A interfaces or output B interface
Signal pins connect the dc source of conference host, the microphone input interface the 3rd, the 4th signal pins are respectively by defeated
Enter A interfaces or export the 3rd of B interface the, the 4th signal pins and connect the control signal pin of Systematic Main Frame of Meeting, the microphone
Input interface the 5th, the 7th signal pins respectively by export B interface the 7th, the 6th signal connect conference host positive audio
Input signal pin, the microphone input interface the 6th, the 8th signal pins respectively by export A interfaces the 6th, the 7th letter
Number pin connects the reverse audio input signal pin of conference host.
It is used as further improvement of the utility model:The microphone input interface the 3rd, the 4th signal support RS485 it is total
Line Communication Control function.
It is used as further improvement of the utility model:Between the power supply signal pin and grounding pin of the T-shaped exchanger
Also it is in series with indicator lamp protective resistance and power supply indicator.
It is used as further improvement of the utility model:The microphone input interface, input A interfaces and output B interface are
RJ45 interface types
Compared with prior art, the beneficial effects of the utility model are:The utility model can be very easily in meeting first
Increase microphone in conference system, only need to insert new T-shaped exchange between the T-shaped exchanger of upper and lower level in conference system series connection
Device, and corresponding interface is connected with the T-shaped exchanger of upper and lower level by cable, secondly the utility model is right with two
Microphone control signal pin, and support RS485 bus communication control functions so that conference host independently can be recognized and controlled
Make single microphone so that Conference control is flexible, and microphone input interface of the present utility model has two way audio just again
To output signal pin and the reverse output signal pin of two way audio, and by the way that audio output signal is intersected with inputting A interfaces
With output B interface connection so that the audio output signal of microphone can input conference host to both direction, letter more unidirectional than tradition
Number input is more stable, and more preferably, the single microphone of certain in conference system does not interfere with overall conference system work, signal to fault-resistant
Transmission is more stablized.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is further illustrated with embodiment in conjunction with brief description of the drawings:
A kind of T-shaped exchanger of conference system, including T-shaped exchanger shell, wherein:In the T-shaped exchanger shell
Upper end is provided with microphone input interface, left and right to be provided at both ends with the input A interfaces that are connected with conference host corresponding ports and defeated
Go out B interface, the microphone input interface, input A interfaces and output B interface are both provided with 8 signal pins, the microphone
1st signal pins of input interface be grounding pin, the 2nd signal pins be power supply signal pin, the 3rd, the 4th signal pins be wheat
Gram air control signal pins, the 5th, the 6th signal pins be the positive output signal pin of audio, the 7th, the 8th signal pins be audio
Reverse input signal pin, the 1st signal pins of the microphone input interface are by inputting the 1st of A interfaces or output B interface
Signal pins connection ground connection, the 2nd signal pins of the microphone input interface are by inputting the 2nd of A interfaces or output B interface
Signal pins connect the dc source of conference host, the microphone input interface the 3rd, the 4th signal pins are respectively by defeated
Enter A interfaces or export the 3rd of B interface the, the 4th signal pins and connect the control signal pin of Systematic Main Frame of Meeting, the microphone
Input interface the 5th, the 7th signal pins respectively by export B interface the 7th, the 6th signal connect conference host positive audio
Input signal pin, the microphone input interface the 6th, the 8th signal pins respectively by export A interfaces the 6th, the 7th letter
Number pin connects the reverse audio input signal pin of conference host.
8 signal pins of microphone input interface, by cleverly connecting up connection input A interfaces and output B interface, electricity
Source line and control signal wire can be supplied or are transmitted by inputting A interfaces and output B interface simultaneously, pass through Mike
Wind end input interface sets the positive output signal pin of two way audio and the reverse output signal pin of two way audio, and by sound
Frequency output signal is intersected to be connected with input A interfaces and output B interface so that the audio output signal of microphone can be to both direction
Conference host is inputted, the problem of conventionally employed single signal line input is easy to break down is overcome, signal transmission is more stablized.
The microphone input interface the 3rd, the 4th signal support RS485 bus communication control functions so that conference host
Each microphone can be carried out that control is individually identified.
Indicator lamp protective resistance and power supply are also in series between the power supply signal pin and grounding pin of the T-shaped exchanger
Indicator lamp.
The microphone input interface, input A interfaces and output B interface are RJ45 interface types, using RJ45 interface classes
Type so that the simpler convenience of line.
In summary, one of ordinary skill in the art is read after the utility model file, according to skill of the present utility model
Art scheme and technical concept make other various corresponding conversion schemes without creative mental labour, belong to this practicality new
The scope that type is protected.