CN209218370U - A kind of 256 road audio frequency switching devices - Google Patents
A kind of 256 road audio frequency switching devices Download PDFInfo
- Publication number
- CN209218370U CN209218370U CN201920145840.5U CN201920145840U CN209218370U CN 209218370 U CN209218370 U CN 209218370U CN 201920145840 U CN201920145840 U CN 201920145840U CN 209218370 U CN209218370 U CN 209218370U
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- China
- Prior art keywords
- switch matrix
- audio frequency
- groups
- frequency switching
- cabinet
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- 239000011159 matrix material Substances 0.000 claims abstract description 39
- 238000004891 communication Methods 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Abstract
The utility model discloses a kind of 256 road audio frequency switching devices, including cabinet, 8 groups of switch matrix are equipped in the cabinet, the switch matrix is connect with switching circuit, the switching circuit includes 4 Schmidt triggers in parallel, 4 Schmidt triggers are connect with 8 groups of switch matrix respectively, and the switch matrix uses the switch matrix chip of model AD8115；The switching that the frequency switch circuit is connect to realize audio with switching circuit by 8 groups of switch matrix, it can be realized 256 tunnels of maximum input, maximum output can be supported to 64 tunnels, can be applied to the occasions such as various large-scale radio and television engineerings, the multimedia conferencing Room, large screen display engineering, television teaching, command and control center.
Description
Technical field
The utility model relates to apparatus for processing audio technical field, in particular to a kind of 256 road audio frequency switching devices.
Background technique
Audio Matrix refers to that the method switched by array arbitrarily exports the road m vision signal to the monitor of the road n
Electronic device, it is m > n that the input of matrix, which is greater than output, under normal circumstances, and this matrix is also referred to as video/audio matrix.
Existing audio frequency switching device maximum can only accomplish that 128 road Audio conversions, the device are used for 128 stereo sounds
Frequency signal is switched to any output channel in output channel.Audio input/output interface uses 3P terminal interface.Audio Matrix
Switch series is to aim at the requirement for adapting to substantially any Audio conversion system, monophonic and solid including a complete series
The changeable equilibrium and non-equilibrium audio signal of sound audio matrix switcher.With RS-232 communication interface and network interface, side
Just application is connect with computer, remote control system or various remote control devices.Matrix switcher be widely used in conference centre and
The requirement of the audio routing of conference hall, command and control center, the teaching building of university, home theater and large-scale residential system, quotient
Industry entertainment systems and other many high-level places, input number maximum can only accomplish 128 tunnels, cannot fully meet big
Type place uses.
Utility model content
It can only accomplish 128 tunnels to solve existing audio frequency switching device input maximum, not be able to satisfy large-scale place and use
The problem of, the utility model provides a kind of maximum audio frequency switching device that can accomplish 256 tunnels of input.
To achieve the goals above, technical solution provided by the utility model is: a kind of 256 road audio frequency switching devices, packet
Cabinet is included, is equipped with 8 groups of switch matrix in the cabinet, the switch matrix is connect with switching circuit, and the switching circuit includes 4
The Schmidt trigger of a parallel connection, 4 Schmidt triggers are connect with 8 groups of switch matrix respectively, and the switch matrix uses type
Number be AD8115 switch matrix chip.
In the above-mentioned technical solutions, the switch matrix is connected with 32 groups of input ports.
Based on the above technical solution, further, the switch matrix is connected with 8 groups of output ports.
As a kind of preferred technical solution, the cabinet uses full aluminium cabinet.
Preferably, the cabinet is equipped with panel button, and the panel button uses Omron key.
In the above-mentioned technical solutions, further, the switch matrix is connected with RS-232 communication receiving interface and RS-
232 communication transmission interfaces.
The beneficial effect of the utility model compared with the existing technology is: the frequency switch circuit by 8 groups of switch matrix with
Switching circuit connects the switching to realize audio, can be realized 256 tunnels of maximum input, and maximum output can be supported to 64 tunnels, can
Applied to various large-scale radio and television engineerings, the multimedia conferencing Room, large screen display engineering, television teaching, command and control center
Etc. occasions.
Detailed description of the invention
Fig. 1 is the schematic diagram of switch matrix；
Fig. 2 is the schematic diagram of switching circuit；
Fig. 3 is input port schematic diagram；
Fig. 4 is output port schematic diagram.
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing.It should be noted that
The explanation of these embodiments is used to help to understand the utility model, but does not constitute the restriction to the utility model.This
Outside, technical characteristic involved in the various embodiments of the present invention described below is as long as they do not conflict with each other
It can be combined with each other.
As shown in Figs 1-4, a kind of 256 road audio frequency switching devices, including cabinet, the cabinet use full aluminium cabinet, have more
Good anti-interference and electromagnetic shielding compatibility.Cabinet is equipped with panel button, and panel button uses Omron key, push button longevity
Up to 1,000,000 times or more；It is equipped with 8 groups of switch matrix in cabinet, as shown in Figure 1, specifically described with one of switch matrix,
The switch matrix use model AD8115 switch matrix chip, as shown in Figure 3 and Figure 4, switch matrix be connected with 32 groups it is defeated
Inbound port and 8 groups of output ports.AD8115 is a 16 × 16 video cross-point switch matrix of high speed, -3dB signal bandwidth
Greater than 200MHz, 1% settling time of channel switching is less than 50ns.AD8115 contains 16 independent output bufferings, can be by it
It is placed in high impedance status, to realize crosspoint output-parallel, to prevent shutdown channel from providing load to output bus.AD8115
Gain be+2.Two kinds of devices are all made of ± 5V power supply power supply, idle power consumption only 70mA.Channel switching is controlled by serial digital
Interface (allowing to connect multiple devices in the form of daisy chain) or parallel control interface are realized；Each road output can be independently updated,
Without being reprogramed to entire array.
AD8115 is encapsulated using 100 pin LQFP, supports -40 DEG C to+85 DEG C extension industrial temperature ranges.These simulations are handed over
Crunode switch can be used for routing high speed signal, including video (NTSC, PAL, S-video, SECAM, YUV, RGB), compression video, three
Grade digital video, data communication and telecommunications.
As shown in Fig. 2, the switch matrix is connect with switching circuit, switching circuit includes 4 Schmidt triggers in parallel,
The Schmidt trigger uses model SN74HC14D chip, and 4 Schmidt triggers pass through connection cable and 8 groups of cubicle switchboards
Battle array connection, the switching to 8 groups of matrixes is realized by switching circuit.
Further, switch matrix is connected with RS-232 communication receiving interface and RS-232 communication transmission interface, has
The RS-232 communication interface used with computer interconnection downloading control protocol, and the application journey for writing communications protocol is provided
Sequence can be convenient user and easily download control routine, can be convenient and sets with PC, remote control system or various remote controls
Standby (such as PC, central control system, AMX central control system) is used cooperatively.
The audio switching matrices can satisfy various large-scale radio and television engineerings, the multimedia conferencing Room, large screen display work
The occasions such as journey, television teaching, command and control center.
The embodiments of the present invention is explained in detail in conjunction with attached drawing above, but the utility model is not limited to be retouched
The embodiment stated.For a person skilled in the art, right in the case where not departing from the utility model principle and spirit
These embodiments carry out a variety of change, modification, replacement and modification, still fall in the protection scope of the utility model.
Claims (6)
1. a kind of 256 road audio frequency switching devices, including cabinet, it is characterised in that: be equipped with 8 groups of switch matrix, institute in the cabinet
It states switch matrix to connect with switching circuit, the switching circuit includes 4 Schmidt triggers in parallel, 4 schmidt triggers
Device is connect with 8 groups of switch matrix respectively, and the switch matrix uses the switch matrix chip of model AD8115.
2. 256 road according to claim 1 audio frequency switching device, it is characterised in that: the switch matrix is connected with 32 groups
Input port.
3. 256 road according to claim 1 audio frequency switching device, it is characterised in that: the switch matrix be connected with 8 groups it is defeated
Exit port.
4. 256 road according to claim 1 audio frequency switching device, it is characterised in that: the cabinet uses full aluminium cabinet.
5. 256 road according to claim 1 audio frequency switching device, it is characterised in that: the cabinet is equipped with panel button,
Panel button uses Omron key.
6. 256 road according to claim 1 audio frequency switching device, it is characterised in that: the switch matrix is connected with RS-
232 communication receiving interfaces and RS-232 communicate transmission interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920145840.5U CN209218370U (en) | 2019-01-28 | 2019-01-28 | A kind of 256 road audio frequency switching devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920145840.5U CN209218370U (en) | 2019-01-28 | 2019-01-28 | A kind of 256 road audio frequency switching devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209218370U true CN209218370U (en) | 2019-08-06 |
Family
ID=67467582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920145840.5U Expired - Fee Related CN209218370U (en) | 2019-01-28 | 2019-01-28 | A kind of 256 road audio frequency switching devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209218370U (en) |
-
2019
- 2019-01-28 CN CN201920145840.5U patent/CN209218370U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190806 |