CN109194428A - Multiplex broadcasting automatic control system - Google Patents
Multiplex broadcasting automatic control system Download PDFInfo
- Publication number
- CN109194428A CN109194428A CN201811312959.3A CN201811312959A CN109194428A CN 109194428 A CN109194428 A CN 109194428A CN 201811312959 A CN201811312959 A CN 201811312959A CN 109194428 A CN109194428 A CN 109194428A
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- relay
- broadcast
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- incoming line
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- 238000001514 detection method Methods 0.000 claims description 21
- 230000007812 deficiency Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Radio Relay Systems (AREA)
Abstract
The present invention relates to the technical fields of broadcast system, and in particular to a kind of control system of multiplex broadcasting.The present invention can be with overcome the deficiencies in the prior art, a kind of multiplex broadcasting automatic control system is provided, it is automatically switched to by the way of automatic control in the route of signal input, may be implemented when all incoming lines without input when keep no signal before line status, when input signal changes automatic switchover the mode of connection purpose.
Description
Technical field
The present invention relates to the technical fields of broadcast system, and in particular to a kind of control system of multiplex broadcasting.
Background technique
Multiplex broadcasting system has been employed extensively in daily teaching, and existing broadcast control system is to use mostly
PLC and embedded dedicated system, at high cost, later period O&M difficulty and cost are larger；Meanwhile also there is part multiplex broadcasting system to adopt
Manually mode of operation, the layer that needs artificially to climb every time switch route to corresponding distribution box, further need exist for operator couple
The familiar ability Successful Operation of route, and need to carry out manual operation switching route after finishing switching again every time, not only
Time-consuming and laborious there are also other security risks, while this artificial switching is it is also possible to because personnel issue not in time, is be easy to cause
Educational broadcast quality problems.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of multiplex broadcasting automatic control systems, use
The mode of automatic control automatically switches in the route of signal input, may be implemented when all incoming lines are without guarantor when inputting
Line status before holding no signal automatically switches the purpose of the mode of connection when input signal changes.
A kind of multiplex broadcasting automatic control system, comprising: first via broadcast signal source selective relay KM1 and KM2, it is described
Signal source selective relay KM1 is connected between first via broadcast incoming line and first via broadcast outlet line, signal
Source selective relay KM2 is connected between unified broadcast incoming line and first via broadcast outlet line；The broadcast of second tunnel
Signal source selective relay KM3 and KM4, the signal source selective relay KM3 are connected to the second tunnel broadcast incoming line
And second between tunnel broadcast outlet line, signal source selective relay KM4 is connected to unified broadcast incoming line and second
It broadcasts between outlet line on road；Third road broadcast signal source selective relay KM5 and KM6, the signal source selective relay KM3
It is connected between third road broadcast incoming line and third road broadcast outlet line, signal source selective relay KM4 difference
It is connected between unified broadcast incoming line and third road broadcast outlet line；Four tunnel signal detection auxiliary relay KA1-KA4,
It is respectively connected to first via broadcast incoming line, the second tunnel broadcast incoming line, third road broadcast incoming line and unified broadcast
Incoming line, for the input detection to four road broadcast singals；Route division controls intermediate relay KA8, for controlling each line
Road is to be uniformly accessed into unified broadcast system to be in respective route broadcast system, when the first via is defeated to the broadcast of third road
When entering the equal no signal of route and unified broadcast incoming line signal output, the first via is automatic to third road broadcast outlet line signal
Be switched in unified broadcast and realize it is self-locking, until into third road broadcast incoming line broadcast, at least some route has the first via
When output signal, controller switching state to the route.
Further, the multiplex broadcasting automatic control system further includes relay KA5, KA6, KA7, the relay
KA5, KA6, KA7 control KM1, KM3, KM5 respectively, and are controlled by the first via to third road signal detection relay KM1, KM3, KM5
Make and realize it is self-locking, when first via signal detection relay KA1 has detected signal input, relay KA5 coil obtain it is electric, it is real
The self-locking actuation with the main output A.C. contactor of signal source selective relay KM1 of existing relay KA5；When second road signal detection after
When electric appliance KA2 has detected signal input, relay KA6 coil obtains electric, realizes that relay KA6 is self-locking and selects relay with signal source
The actuation of the main output A.C. contactor of device KM3；When third road, signal detection relay KA3 has detected signal input, relay
Device KA7 coil obtains electric, the self-locking actuation with the main output A.C. contactor of signal source selective relay KM5 of realization relay KA7.
Further, the coil voltage of the four tunnels signal detection auxiliary relay KA1-KA4 must be with rated power broadcast system
The output voltage of system is consistent.
Further, the four tunnels signal detection auxiliary relay KA1-KA4, if the common fixed-resistance output of broadcast system
When, then use the relay of coil voltage 12-28V；If broadcast system using 100V level pressure go out, use coil voltage for
The relay of AC110V；If broadcast system is exported using 220V, use coil voltage for the relay of 220V.
Further, the contact current of the switching control switch KM1-KM6 is determined by system power.
In conclusion the invention has the following advantages: the institute of multiplex broadcasting automatic control system of the present invention
The latching circuit for having signal line to may be implemented to automatically switch without manual intervention, in simultaneity factor avoids audio signal small and weak
When system can not judge that switch caused by signal source daps phenomenon, meets system while signal switches in real time and avoids
Unnecessary safety accident.Multiplex broadcasting automatic control system structure of the present invention is simple simultaneously, easy to maintain.
Detailed description of the invention
Fig. 1 is the circuit diagram of one embodiment of multiplex broadcasting automatic control system of the present invention
Specific embodiment
In order to be preferably illustrated to the present invention, elaborate below in conjunction with attached drawing.
A kind of multiplex broadcasting automatic control system provided by the invention, as shown in Figure 1, being the system using Mr. Yu school
There are three the specific embodiments in the broadcast system of grade for tool, and the first via to third road broadcast incoming line is respectively set as one
Grade to Third school grade inputs, and the first via to third road broadcast outlet line is respectively set as one grade to Third school grade output, unification
Broadcast system only has single input without output.Wherein, unified broadcast input, an input, second grade input and Third school grade
Input is the output of each broadcast system；A grade output, second grade output, the signal that Third school grade output is each grade classroom speaker
Source is connected in each classroom broadcast system；Relay KM1-KM6 is the signal source selective relay of three grades；Relay
KA1-KA4 is four tunnel signal detection auxiliary relays, cooperates constant-voltage broadcasting system to use AC110V coil in the present embodiment；After
Electric appliance KA8 is that route division controls intermediate relay, is uniformly accessed into unified broadcast system or respectively for controlling each route
In grade's broadcast system.
Above-mentioned related component is connected according to schematic diagram as shown in Figure 1, then is input a signal into and be connected to output
On respective connecting terminal；Wherein it should be noted that the output of each grade needs to be correspondingly connected with output, but unified broadcast system
Only single input is without output；Wherein KA1-KA4 is detection relay, and coil voltage must be with the output of constant-voltage broadcasting system
Voltage unanimously (then uses the relay of coil voltage 12-28V if it is common fixed-resistance output formula, then adopts if it is 100V level pressure
With the coil of AC110V, then coil voltage is 220V to 220V output broadcast system nonstandard for part)；Wherein switching control switchs
The contact current of KM1-KM6 is determined by system power；It checks and uses corresponding power tested K A1-KA4 respectively after system wiring is errorless,
It can start to work after getting a desired effect.Further, further, the multiplex broadcasting automatic control system further includes
Relay KA5, KA6, KA7, described relay KA5, KA6, KA7 control KM1, KM3, KM5 respectively, and by the first via to third road
Signal detection relay KM1, KM3, KM5 control and realize it is self-locking, when first via signal detection relay KA1 detected signal
When input, relay KA5 coil obtains electric, realizes that relay KA5 is self-locking with the main output ac contactor of signal source selective relay KM1
The actuation of device；When second road signal detection relay KA2 detected signal input when, relay KA6 coil obtain it is electric, realize after
The self-locking actuation with the main output A.C. contactor of signal source selective relay KM3 of electric appliance KA6；When third road signal detection relay
When KA3 has detected signal input, relay KA7 coil obtains electric, realizes that relay KA7 is self-locking with signal source selective relay
The actuation of the main output A.C. contactor of KM5.
Multiplex broadcasting automatic control system of the present invention is its working principles are as follows: when the broadcast of three grades is without letter
Number and unified broadcast when sounding, all grades signals automatically switch in unified broadcast and realize it is self-locking, until each grade is wide
Broadcast in system that at least some system has output, controller switching state；The present invention may be implemented all signal lines and automatically switch
Without manual intervention, system can not judge to cut caused by signal source when the latching circuit in simultaneity factor avoids audio signal small and weak
Parallel operation daps phenomenon.
Above-mentioned specific embodiment is not construed as limitation of the invention further, and those skilled in the art are according to this hair
The unsubstantiality change that bright content is made should all be fallen into the scope of the present invention.
Claims (5)
1. a kind of multiplex broadcasting automatic control system, comprising: the first via broadcast signal source selective relay KM1 and KM2, the letter
Number source selective relay KM1 is connected between first via broadcast incoming line and first via broadcast outlet line, signal source
Selective relay KM2 is connected between unified broadcast incoming line and first via broadcast outlet line；Second tunnel broadcast letter
Number source selective relay KM3 and KM4, the signal source selective relay KM3 be connected to the second tunnel broadcast incoming line and
Second tunnel is broadcasted between outlet line, and signal source selective relay KM4 is connected to unified broadcast incoming line and the second tunnel
It broadcasts between outlet line；Third road broadcast signal source selective relay KM5 and KM6, the signal source selective relay KM3 points
It is not connected between third road broadcast incoming line and third road broadcast outlet line, signal source selective relay KM4 connects respectively
It connects between unified broadcast incoming line and third road broadcast outlet line；Four tunnel signal detection auxiliary relay KA1-KA4, point
It is defeated that it is not connected to first via broadcast incoming line, the second tunnel broadcast incoming line, third road broadcast incoming line and unified broadcast
Enter route, for the input detection to four road broadcast singals；Route division controls intermediate relay KA8, for controlling each route
It is to be uniformly accessed into unified broadcast system to be in respective route broadcast system, broadcasts and input when the first via to third road
When the equal no signal of route and unified broadcast incoming line signal output, the first via to third road broadcast outlet line signal is cut automatically
Change in unified broadcast and realize it is self-locking, until the first via into third road broadcast incoming line broadcast at least some route have it is defeated
Out when signal, controller switching state to the route.
2. multiplex broadcasting automatic control system according to claim 1, it is characterised in that: further, the multichannel is wide
Broadcasting automatic control system further includes relay KA5, KA6, KA7, described relay KA5, KA6, KA7 control respectively KM1, KM3,
KM5, and controlled by the first via to third road signal detection relay KM1, KM3, KM5 and realize it is self-locking, when first via signal examine
Relay KA1 is surveyed when having detected signal input, relay KA5 coil obtains electric, realizes that relay KA5 is self-locking and selects with signal source
The actuation of the main output A.C. contactor of relay KM1；When second road signal detection relay KA2 has detected signal input,
Relay KA6 coil obtains electric, the self-locking suction with the main output A.C. contactor of signal source selective relay KM3 of realization relay KA6
It closes；When third road, signal detection relay KA3 has detected signal input, relay KA7 coil obtains electric, realization relay
The self-locking actuation with the main output A.C. contactor of signal source selective relay KM5 of KA7.
3. multiplex broadcasting automatic control system according to claim 1, it is characterised in that: four tunnel signal detection auxiliary
The coil voltage of relay KA1-KA4 must be consistent with the output voltage of constant-voltage broadcasting system.
4. multiplex broadcasting automatic control system according to claim 1, it is characterised in that: four tunnel signal detection auxiliary
Relay KA1-KA4, if when the common fixed-resistance output of broadcast system, using the relay of coil voltage 12-28V；If broadcast
When system is gone out using 100V level pressure, then use coil voltage for the relay of AC110V；If broadcast system is exported using 220V,
Then use coil voltage for the relay of 220V.
5. multiplex broadcasting automatic control system according to claim 1, it is characterised in that: the switching control switch KM1-
The contact current of KM6 is determined by system power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811312959.3A CN109194428A (en) | 2018-11-06 | 2018-11-06 | Multiplex broadcasting automatic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811312959.3A CN109194428A (en) | 2018-11-06 | 2018-11-06 | Multiplex broadcasting automatic control system |
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| Publication Number | Publication Date |
|---|---|
| CN109194428A true CN109194428A (en) | 2019-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811312959.3A Pending CN109194428A (en) | 2018-11-06 | 2018-11-06 | Multiplex broadcasting automatic control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884973A (en) * | 2019-02-28 | 2019-06-14 | 宁波明兮信息技术有限公司 | A kind of method of multi-channel control shared components |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030101462A1 (en) * | 2001-10-26 | 2003-05-29 | Chung Soo Young | Control method of broadcasting system using a telephone and control device thereof |
| CN101958759A (en) * | 2009-07-13 | 2011-01-26 | 秦皇岛富通尼特智能科技有限公司 | Switching and detecting system of fire prevention broadcast circuit |
| CN105049143A (en) * | 2015-07-15 | 2015-11-11 | 郑州单点科技软件有限公司 | Campus intelligent broadcast switcher |
| CN208905011U (en) * | 2018-11-06 | 2019-05-24 | 福建师范大学福清分校 | Multiplex broadcasting automatic control system |
-
2018
- 2018-11-06 CN CN201811312959.3A patent/CN109194428A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030101462A1 (en) * | 2001-10-26 | 2003-05-29 | Chung Soo Young | Control method of broadcasting system using a telephone and control device thereof |
| CN101958759A (en) * | 2009-07-13 | 2011-01-26 | 秦皇岛富通尼特智能科技有限公司 | Switching and detecting system of fire prevention broadcast circuit |
| CN105049143A (en) * | 2015-07-15 | 2015-11-11 | 郑州单点科技软件有限公司 | Campus intelligent broadcast switcher |
| CN208905011U (en) * | 2018-11-06 | 2019-05-24 | 福建师范大学福清分校 | Multiplex broadcasting automatic control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884973A (en) * | 2019-02-28 | 2019-06-14 | 宁波明兮信息技术有限公司 | A kind of method of multi-channel control shared components |
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