CN200987171Y - Broadcast relay broadcasting audio signal source automatic switchover device - Google Patents

Broadcast relay broadcasting audio signal source automatic switchover device Download PDF

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Publication number
CN200987171Y
CN200987171Y CNU2006201592426U CN200620159242U CN200987171Y CN 200987171 Y CN200987171 Y CN 200987171Y CN U2006201592426 U CNU2006201592426 U CN U2006201592426U CN 200620159242 U CN200620159242 U CN 200620159242U CN 200987171 Y CN200987171 Y CN 200987171Y
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CN
China
Prior art keywords
circuit
road
signal
audio signal
sound frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNU2006201592426U
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Chinese (zh)
Inventor
黄基刚
陈冠强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GUANGXI BROADCAST AND TELEVISION DEVELOPMENT CENTER
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GUANGXI BROADCAST AND TELEVISION DEVELOPMENT CENTER
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Filing date
Publication date
Application filed by GUANGXI BROADCAST AND TELEVISION DEVELOPMENT CENTER filed Critical GUANGXI BROADCAST AND TELEVISION DEVELOPMENT CENTER
Priority to CNU2006201592426U priority Critical patent/CN200987171Y/en
Application granted granted Critical
Publication of CN200987171Y publication Critical patent/CN200987171Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

An automatic switch for broadcast retransmission audio signal source is introduced. The utility model is characterized in that the switch has an A channel locked-signal optical-coupling circuit; an A channel signal level, time judge and recovery delay circuit; an A channel audio signal amplification circuit; an A channel audio signal level instruction circuit; a B channel locked-signal optical-coupling circuit; a B channel level, time judge and recovery delay circuit; a B channel audio signal amplification circuit; a B channel audio signal level instruction circuit; an audio signal selection switch driving circuit; an audio signal selection switch circuit, and a power supply circuit connected with each of the above circuits. Combined with the above measures, the utility model makes the automatic switching of the broadcast retransmission audio signal source more accurate, can make selective switching to multiple signal sources, and overcomes the shortcomings of the traditional automatic switch that the traditional switch can only switch the signal source of one for major use, one for standby, realizing the continuity of broadcast retransmission.

Description

The audio signal source automatic switchover device is relayed in a kind of broadcasting
One. technical field
The utility model belongs to technical field of radio, particularly relates to the improvement that the audio signal source automatic switchover device is relayed in broadcasting.
Two. background technology
Existing radio relay broadcast station station audio signal automatic switchover device mainly is to utilize the conduct that has or not of the audio level of audio signal whether to need the foundation that automaticallyes switch.Yet, broadcast singal is the audio signal that minibreak is arranged, only whether the conduct that has or not to audio signal level needs the foundation that automaticallyes switch, consequently: error rate is higher, so on the one hand, since the broadcast singal minibreak, and think it is not have audio signal by mistake, and the switching that work makes mistake; On the other hand, when in fact breaking down, automatic switchover device also thinks it is that normal broadcast singal pauses by mistake, does not in time make correct switching.State Administration of Radio Film and Television is very high to the rate of the breaking requirement at radio relay broadcast station station, it is broken rate and hour calculates by: minute, second/hundred, its second, number was accurate to first of decimal, and the audio frequency automatic switchover device that error rate is high is to satisfy requirement that broadcasting relays.Therefore, the automatic switchover device of development high-accuracy has very realistic meanings.If being arranged, a kind of broadcasting more accurately than current broadcasting relay audio signal source automatic switchover device relay the appearance of audio signal source automatic switchover device, be bound to obtain broadcasting the favor of industry, do not occur but regrettably there is this switching broadcasting more accurately and timely to relay the audio signal source automatic switchover device yet.
Three. summary of the invention
The purpose of this utility model is to manufacture and design a kind of broadcasting to relay the audio signal source automatic switchover device, relays the not accurate enough shortcoming of audio signal source automatic switchover device to overcome current broadcasting.
The purpose of this utility model is achieved in that a kind of broadcasting relay audio signal source automatic switchover device, of the present utility model being characterised in that: have with A satellite receiver locking signal and A road signal level, time and judge the A road locking signal optically coupled circuit that links with the recovery delay circuit; A road signal level, the time of selecting switch driving circuit to link with A road locking signal optically coupled circuit and A road amplifier circuit for sound frequency signal and audio signal is judged and recovers delay circuit; Judge with A road satellite receiver audio output signal and A road signal level, time and recover the A road amplifier circuit for sound frequency signal that delay circuit and A road audio signal level indicating circuit and audio signal select commutation circuit to link; The A road audio signal level indicating circuit that links with A road amplifier circuit for sound frequency signal; Judge the B road locking signal optically coupled circuit that links with the recovery delay circuit with B satellite receiver locking signal and B road signal level, time; B road signal level, the time of selecting switch driving circuit to link with B road locking signal optically coupled circuit and B road amplifier circuit for sound frequency signal and audio signal is judged and recovers delay circuit; Judge with B road satellite receiver audio output signal and B road signal level, time and recover the B road amplifier circuit for sound frequency signal that delay circuit and B road audio signal level indicating circuit and audio signal select commutation circuit to link; Believe with the B road audio frequency that B road amplifier circuit for sound frequency signal links.Described power circuit is dc-battery or uses the civil power step-down rectifier.
Take the utility model of above measure, broadcasting relay audio signal source automatic switchover device is more accurate, can optionally switch a plurality of signal sources, overcome the deficiency that traditional automatic switchover device can only switch the signal source of " main be equipped with ", can realize that the broadcasting of continuation is relayed.
Below in conjunction with the accompanying drawings the utility model is described in further detail again.
Four. description of drawings
Accompanying drawing 1 is the circuit block diagram of the utility model (embodiment);
Accompanying drawing 2 is electrical schematic diagrams of the utility model (embodiment).
Five. embodiment
The utility model can switch multipath audio signal, utilized the locking lamp of the signal bit stream of representing satellite and the microwave signal error rate height that has that it's too late, utilize its discriminating foundation as the signal switching, when the locking lamp of digital receiver does not work, prove that then this digital receiver does not have signal bit stream or the error rate is too high, need in time to switch.Simultaneously, consider more special situation: the locking lamp is bright, does not have audio signal output exactly, and the audio output signal that we also utilize receiver switches as the switch signal differentiates foundation, then switches after 15 seconds in this audio signal not.
Accompanying drawing 1 has provided the circuit block diagram of the utility model embodiment.Embodiment has A, B, C three tunnel audio signals, and C pipeline equipment audio output signal can be that audio player is as signal source.Have with A satellite receiver locking signal and A road signal level, time and judge the A road locking signal optically coupled circuit that links with the recovery delay circuit; A road signal level, the time of selecting switch driving circuit to link with A road locking signal optically coupled circuit and A road amplifier circuit for sound frequency signal and audio signal is judged and recovers delay circuit; Judge with A road satellite receiver audio output signal and A road signal level, time and recover the A road amplifier circuit for sound frequency signal that delay circuit and A road audio signal level indicating circuit and audio signal select commutation circuit to link; The A road audio signal level indicating circuit that links with A road amplifier circuit for sound frequency signal; Judge the B road locking signal optically coupled circuit that links with the recovery delay circuit with B satellite receiver locking signal and B road signal level, time; B road signal level, the time of selecting switch driving circuit to link with B road locking signal optically coupled circuit and B road amplifier circuit for sound frequency signal and audio signal is judged and recovers delay circuit; Judge with B road satellite receiver audio output signal and B road signal level, time and recover the B road amplifier circuit for sound frequency signal that delay circuit and B road audio signal level indicating circuit and audio signal select commutation circuit to link; The B road audio signal level indicating circuit that links with B road amplifier circuit for sound frequency signal; With A road signal level, time judge with recover delay circuit and B road signal level, the time is judged with recover the audio signal that delay circuit and B road amplifier circuit for sound frequency signal and A road amplifier circuit for sound frequency signal link selects switch driving circuit; Select commutation circuit with the audio signal that A road amplifier circuit for sound frequency signal and B road amplifier circuit for sound frequency signal and audio signal select switch driving circuit to link.In addition, also has the power circuit (not drawing power circuit in the accompanying drawing) that links with above-mentioned each circuit.
Accompanying drawing 2 has provided the electrical schematic diagram of the utility model embodiment.Use the 12V battery as power supply.The operation principle of circuit is: with A road signal is example, during normal condition, audio signal is arranged, the power amplifier of integrated circuit (IC)-A3 (TDA2822) amplifies audio signal, after diode D1, diode D2 rectification, charge to capacitor C 1, capacitor C 1 has the voltage about 10V, when the locking lamp is bright, the optical coupler conducting, 2 pin of integrated circuit (IC)-A2 (555) are high potentials, and the monostable circuit that integrated circuit (IC)-A2 (555) forms is in stable state, output low level, transistor T-A1 conducting makes relay J-A adhesive.2 pin of integrated circuit (IC)-A2 (555) are not low level when having audio signal or lock semaphore not to work when 15 seconds, the monostable trigger-action circuit upset, and 3 pin output high level T1 ends, and relay J-A discharges, and switch switches to space signal.Another power amplifier of integrated circuit (IC)-A3 (TDA2822) amplifies this audio signal, and the driven for emitting lights diode is done the audio level indication.The operation principle of B road signal is identical with the A road.
Below provide embodiment circuit element table, the ownership of each element in each electronic circuit also indicated in the hurdle in the right of this table " remarks ".With reference to the accompanying drawings 2 and embodiment circuit element table, can be very easy to realize manufacturing operation of the present utility model.
Embodiment circuit element table
Sequence number Code name Title Specification Remarks
1 IC-A2 Time-base integrated circuit 555 A road signal level, time are judged and recover delay circuit
2 C-A1 Electrolytic capacitor 1000μf/35v
3 C-A4 Electrolytic capacitor 10μf/35v
4 C-A5 Electrolytic capacitor 47μf/35v
5 C-A6 Capacitor 0.01μf/50v
6 C-A2 Electrolytic capacitor 100μf/35v A road amplifier circuit for sound frequency signal
7 C-A3 Electrolytic capacitor 100μf/35v
8 C-A7 Electrolytic capacitor 47μf/35v
9 C-A8 Electrolytic capacitor 47μf/35v
10 IC-B2 Time-base integrated circuit 555 B road signal level, time are judged and recover delay circuit
11 C-B1 Electrolytic capacitor 1000μf/35v
12 C-B4 Electrolytic capacitor 10μf/35v
13 C-B5 Electrolytic capacitor 47μf/35v
14 C-B6 Capacitor 0.01μf/50v
15 C-B2 Electrolytic capacitor 100μf/35v B road amplifier circuit for sound frequency signal
16 C-B3 Electrolytic capacitor 100μf/35v
17 C-B7 Electrolytic capacitor 47μf/35v
18 C-B8 Electrolytic capacitor 47μf/35v
19 R-A1 Resistor 22kΩ A road signal level, time are judged and recover delay circuit
20 R-A3 Resistor 47Ω
21 R-A5 Resistor 100kΩ
22 R-A6 Resistor 1kΩ Audio signal is selected switch driving circuit
23 R-A7 Resistor 10kΩ
24 RS Resistor 200Ω Audio signal selects to switch indicating circuit
25 LED-AS Light-emitting diode Φ 5mm green
26 LED-BS Light-emitting diode Φ 5mm yellow
27 LED-CS Light-emitting diode Φ 5mm redness
28 R-B1 Resistor 22kΩ B road signal level, time are judged and recover delay circuit
29 R-B3 Resistor 47Ω
30 R-B5 Resistor 100kΩ
31 R-B6 Resistor 1kΩ Audio signal is selected switch driving circuit
32 R-B7 Resistor 10kΩ
33 D-A1 Diode 1N4001 A road signal level, time are judged and recover delay circuit
34 D-A2 Diode 1N4001
35 D-A4 Diode 1N4001 Audio signal is selected switch driving circuit
36 T-A1 Triode 2SC8550
37 D-B1 Diode 1N4001 B road signal level, time are judged and recover delay circuit
38 D-B2 Diode 1N4001
39 D-B4 Diode 1N4001 Audio signal is selected switch driving circuit
40 T-B1 Triode 2SC8550
41 LED-AL Light-emitting diode Φ 5mm green A road audio signal level indicating circuit
42 R-A2 Resistor 100Ω
43 D-A3 Diode 1N4001
44 LED-BL Light-emitting diode Φ 5mm yellow B road audio signal level indicating circuit
45 R-B2 Resistor 100Ω
46 D-B3 Diode 1N4001
47 IC-A1 Optical coupler 4N26 A road locking signal optically coupled circuit
48 R-A4 Resistor 10kΩ
49 IC-B1 Optical coupler 4N26 B road locking signal optically coupled circuit
50 R-B4 Resistor 10kΩ
51 IC-A3 The audio frequency power amplifier integrated circuit TDA2822 A road amplifier circuit for sound frequency signal
52 IN-A The lotus flower socket
53 IC-B3 The audio frequency power amplifier integrated circuit TDA2822 B road amplifier circuit for sound frequency signal
54 IN-B The lotus flower socket
55 J-A12V Relay The 12V direct current Audio signal is selected commutation circuit
56 J-B12V Relay The 12V direct current
57 IN-C The lotus flower socket
58 OUT The lotus flower socket
Signal level of the present utility model, time are judged with the alternative elements of recovering 555 time-base integrated circuits in the delay circuit to be had: dual time base 556 integrated circuits; NOR gate 4001 integrated circuits; NAND gate 4011 integrated circuits; Trigger 4027 or 4013 integrated circuits; LPC700 series monolithic computer; 80C51 series monolithic computer; P89V51 series monolithic computer; Philips lash monolithic computer P89C51X2, P89C52X2, P89C54X2, P89C58X2; SST monolithic computer SST89C54, SST89C58; PIC series monolithic computer.
The alternative elements of audio amplifier circuit TDA2822 has: LM324; LM741; TL084; TL082; TDA2330; TDA7227; TDA2009; TDA7050; TDA2002.

Claims (2)

1. a broadcasting is relayed the audio signal source automatic switchover device, of the present utility model being characterised in that: have with A satellite receiver locking signal and A road signal level, time and judge the A road locking signal optically coupled circuit that links with the recovery delay circuit; A road signal level, the time of selecting switch driving circuit to link with A road locking signal optically coupled circuit and A road amplifier circuit for sound frequency signal and audio signal is judged and recovers delay circuit; Judge with A road satellite receiver audio output signal and A road signal level, time and recover the A road amplifier circuit for sound frequency signal that delay circuit and A road audio signal level indicating circuit and audio signal select commutation circuit to link; The A road audio signal level indicating circuit that links with A road amplifier circuit for sound frequency signal; Judge the B road locking signal optically coupled circuit that links with the recovery delay circuit with B satellite receiver locking signal and B road signal level, time; B road signal level, the time of selecting switch driving circuit to link with B road locking signal optically coupled circuit and B road amplifier circuit for sound frequency signal and audio signal is judged and recovers delay circuit; Judge with B road satellite receiver audio output signal and B road signal level, time and recover the B road amplifier circuit for sound frequency signal that delay circuit and B road audio signal level indicating circuit and audio signal select commutation circuit to link; The B road audio signal level indicating circuit that links with B road amplifier circuit for sound frequency signal; With A road signal level, time judge with recover delay circuit and B road signal level, the time is judged with recover the audio signal that delay circuit and B road amplifier circuit for sound frequency signal and A road amplifier circuit for sound frequency signal link selects switch driving circuit; Select commutation circuit with the audio signal that A road amplifier circuit for sound frequency signal and B road amplifier circuit for sound frequency signal and audio signal select switch driving circuit to link, also have the power circuit that links with above-mentioned each circuit.
2. the audio signal source automatic switchover device is relayed in broadcasting according to claim 1, and it is characterized by: described power circuit is dc-battery or uses the civil power step-down rectifier.
CNU2006201592426U 2006-11-17 2006-11-17 Broadcast relay broadcasting audio signal source automatic switchover device Expired - Fee Related CN200987171Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2006201592426U CN200987171Y (en) 2006-11-17 2006-11-17 Broadcast relay broadcasting audio signal source automatic switchover device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2006201592426U CN200987171Y (en) 2006-11-17 2006-11-17 Broadcast relay broadcasting audio signal source automatic switchover device

Publications (1)

Publication Number Publication Date
CN200987171Y true CN200987171Y (en) 2007-12-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2006201592426U Expired - Fee Related CN200987171Y (en) 2006-11-17 2006-11-17 Broadcast relay broadcasting audio signal source automatic switchover device

Country Status (1)

Country Link
CN (1) CN200987171Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101500112B (en) * 2008-01-31 2013-03-20 日本电气株式会社 Automatic switch apparatus and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101500112B (en) * 2008-01-31 2013-03-20 日本电气株式会社 Automatic switch apparatus and method

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20071205

Termination date: 20091217