CN203661058U - Main/standby engine automatic switching device of frequency modulation transmitters - Google Patents
Main/standby engine automatic switching device of frequency modulation transmitters Download PDFInfo
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- CN203661058U CN203661058U CN201420002959.4U CN201420002959U CN203661058U CN 203661058 U CN203661058 U CN 203661058U CN 201420002959 U CN201420002959 U CN 201420002959U CN 203661058 U CN203661058 U CN 203661058U
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Abstract
The utility model discloses a main/standby engine automatic switching device of frequency modulation transmitters. The main/standby engine automatic switching device of the frequency modulation transmitters is characterized in that a main control module and three change over switches are arranged inside a chassis, and the main control module comprises a single-chip microcomputer control module, a switch power supply, a current/voltage detection module, a power supply switch control module, an FM receiving module and an audio detection module; a 220V control power supply input interface and a 220V transmitter power supply input interface are connected with the main control module, and the main control module outputs power supply signals to a main engine power supply interface and a standby engine power supply interface; an F head antenna signal interface receives an audio signal and outputs to the main control module, the main control module and the three change over switches are connected to realize the bidirectional communication, and an RS485 network communication interface, an RS232 serial communication interface and an internet access are connected with the main control module to realize the bidirectional communication. The main/standby engine automatic switching device of the frequency modulation transmitters of the utility model can select and switch the signals of at most six frequency modulation transmitters corresponding to three frequency points separately, and is simple in structure, lower in cost, strong in safety and complete in function.
Description
Technical field
The utility model relates to the active and standby machine automatic switchover device of a kind of multichannel frequency modulated transmitter, the especially a kind of active and standby machine automatic switching apparatus that can control any 6 frequency modulated transmitters being applicable in broadcast television emission system.
Background technology
The covering of rural broadcast television at present, main problem is fund, and the automatic switching control equipment of selling is on the market expensive, and function is impracticable.If manually switch, can increase off-air time, easily cause misoperation, thus damage equipment.In order to cover more rural area with minimum money, make full use of existing resource, adopt Single-chip Controlling mode, realizing many active and standby machines automatic switchovers of frequency modulated transmitter is good selections.
Summary of the invention
Technical problem to be solved in the utility model is to provide the active and standby machine automatic switchover device of a kind of frequency modulated transmitter, can realize the master of frequency modulated transmitter, standby host signal is by STM32F03 microcontroller circuit, automatically select output a certain road FM signal to be wherein sent to antenna as transmitting, can switch active and standby machine, simultaneously can select respectively switching to the signal of 3 frequencies of correspondence of 6 frequency modulated transmitters at the most, and simple in structure, cost is lower, high safety, perfect in shape and function, can better adapt to local small-power and mend a demand for FM broadcasting overlay network more.
The utility model solves the problems of the technologies described above with following technical scheme.
The active and standby machine automatic switchover device of a kind of frequency modulated transmitter of the utility model, comprise cabinet, main control module 1 is installed in cabinet, three change over switches 2, 3, 4, RS485 network communication interface 5, RS232 serial communication interface 6, network interface 7, F antenna signal interface 24, 200V controls power input interface 8, 220V transmitter supply input interface 9, host power supply power supply interface 10, standby host Power supply interface 11, 3 main frame RF signal input interfaces 12 ~ 14, 3 standby host RF signal input interfaces 15 ~ 17, three dummy load output interfaces 18 ~ 20 and three mixer output interfaces 21 ~ 23.220V controls power input interface 8 and 220V transmitter supply input interface 9 is connected to main control module 1, and power supply output signal is outputed to host power supply power supply interface 10 and standby host Power supply interface 11 by main control module 1.F antenna signal interface 24 received audio signals output to main control module.Main control module 1 is realized both-way communication with being connected of three change over switches.RS485 network communication interface 5, RS232 serial communication interface 6, network interface 7 respectively with being connected and realizing both-way communication of main control module 1.3 main frame RF signal input interfaces 12 ~ 14 are connected respectively to three change over switches 2,3,4; 3 standby host RF signal input interface 15 ~ 17 respective hosts frequencies are connected respectively to three change over switches 2,3,4; Two outputs of three change over switches 2,3,4 are connected respectively to three dummy load output interfaces 18 ~ 20 and three mixer output interfaces 21 ~ 23.
The active and standby machine automatic switchover device of a kind of frequency modulated transmitter of the utility model, described main control module 1 is by single chip control module 25, Switching Power Supply 26, current/voltage detection module 28,29, mains switch control module 27, FM receiver module 30 and audio frequency detection module 31 form.220V controls power input interface 8 and is connected to Switching Power Supply 26, and Switching Power Supply 26 is connected to single chip control module 25; The signal of 220V transmitter supply input interface 9 outputs to electric current and voltage detection module 28, be connected to mains switch control module 27, the parallel connection of mains switch control module exports electric current and voltage detection module 29 to, and two-way power supply signal is after tested parallel-connected to host power supply power supply interface 10, standby host Power supply interface 11; Current/voltage detection module 28,29 is realized both-way communication with being connected of single chip control module 25.Three change over switches 2,3,4, RS485 network communication interface 5, RS232 serial communication interface 6, network interface 7 carries out both-way communication with single chip control module 25 respectively and is connected.
A described F antenna signal interface 24 received audio signal output FM receiver modules 30, FM receiver module 30 is exported two-way signal in parallel and is connected to audio frequency detection module 31, then parallel connection outputs to single chip control module 25.
The utility model is simple in structure, cost is lower, high safety, perfect in shape and function, and has RS232, RS485 communication interface and network interface, can receive internet signal by switch.The state information of active and standby machine transmitter is transferred in switch by network interface, by network interface by transmitter state communication to main control module, by the on-off state of the active and standby machine of single chip control module control, thereby realize signal circuit.When initial condition, giving tacit consent to 6 active and standby machine transmitters all can normally work, when system any equipment break down (transmitting power is down to below threshold value) in master transmitter during in normal work, fault message by Internet Transmission in switch, network interface receives and is transferred to control module after fault message and judges, corresponding change over switch work, signal switches, three tunnel main signals output in star three mixers, launch by antenna, three road space signals output to dummy load, and the frequency simultaneously breaking down is labeled as fault point; When receiving after fault message, control module detects that standby host has mark fault point, and change over switch is not worked, and sends warning message.Active and standby machine transmitter can switch mutually, realizes active and standby machine and mutually backs up.
Brief description of the drawings
Fig. 1 is system schematic of the present utility model.
Fig. 2 is the circuit diagram of the utility model main control module.
In figure.
1-main control module.
2-change over switch 1.
3-change over switch 2.
4-change over switch 3.
5-RS485 network communication interface.
6-RS232 serial communication interface.
7-network interface.
8-220V controls power input interface.
9-220V transmitter supply input interface.
10-host power supply power supply interface.
11-standby host Power supply interface.
12-main frame RF input interface one.
13-main frame RF input interface two.
14-main frame RF input interface three.
15-standby host RF input interface one.
16-standby host RF input interface two.
17-standby host RF input interface three.
18-dummy load output interface one.
19-dummy load output interface two.
20-dummy load output interface three.
21-mixer output interface one.
22-mixer output interface two.
23-mixer output interface three.
24-F antenna signal interface.
25-single chip control module.
26-Switching Power Supply.
27-mains switch control module.
28-electric current and voltage detection module one.
29-electric current and voltage detection module two.
30-FM receiver module.
31-audio frequency detection module.
Embodiment
The active and standby machine automatic switchover device of the utility model frequency modulated transmitter, it comprises cabinet, cabinet is interior by main control module 1, three change over switches 2, 3, 4, RS485 network communication interface 5, RS232 serial communication interface 6, network interface 7, F antenna signal interface 24, 200V controls power input interface 8, 220V transmitter supply input interface 9, host power supply power supply interface 10, standby host Power supply interface 11, 3 main frame RF signal input interfaces 12 ~ 14, 3 standby host RF signal input interfaces 15 ~ 17, three dummy load output interfaces 18 ~ 20 and three mixer output interfaces 21 ~ 23 form.The status information transmission of transmitter is in switch, enter into this equipment by network interface, in the time that transmitter breaks down (transmitting power is down to below threshold value), the signal receiving by network interface is transferred to main control module, after judgement, by control change over switch, normal signal is outputed to mixer and launch by antenna again, fault-signal is switched in dummy load simultaneously.While realizing fault, the identical frequency signal of active and standby machine automatic mutual switches mutually, and active and standby machine backs up mutually.
Below in conjunction with accompanying drawing, the utility model will be further described.
As shown in Figure 1: in cabinet, have main control module 1, three change over switches 2,3,4, RS485 network communication interface 5, RS232 serial communication interface 6, network interface 7, F antenna signal interface 24,200V controls power input interface 8,220V transmitter supply input interface 9, host power supply power supply interface 10, standby host Power supply interface 11,15 ~ 17, three dummy load output interfaces 18 ~ 20 of 12 ~ 14,3 standby host RF signal input interfaces of 3 main frame RF signal input interfaces and three mixer output interfaces 21 ~ 23.220V controls power input interface 8 and 220V transmitter supply input interface 9 is connected to main control module 1, and power supply output signal is outputed to host power supply power supply interface 10 and standby host Power supply interface 11 by main control module 1.F antenna signal interface 24 received audio signals output to main control module.Main control module 1 is realized both-way communication with being connected of three change over switches.RS485 network communication interface 5, RS232 serial communication interface 6, network interface 7 respectively with being connected and realizing both-way communication of main control module 1.3 main frame RF signal input interfaces 12 ~ 14 are connected respectively to three change over switches 2,3,4; 3 standby host RF signal input interface 15 ~ 17 respective hosts frequencies are connected respectively to three change over switches 2,3,4; Two outputs of three change over switches 2,3,4 are connected respectively to three dummy load output interfaces 18 ~ 20 and three mixer output interfaces 21 ~ 23.
As shown in Figure 2: described main control module 1 is by by single chip control module 25, Switching Power Supply 26, current/voltage detection module 28,29, mains switch control module 27, FM receiver module 30 and audio frequency detection module 31 form.220V controls power input interface 8 and is connected to Switching Power Supply 26, and Switching Power Supply 26 is connected to single chip control module 25; The signal of 220V transmitter supply input interface 9 outputs to electric current and voltage detection module 28, be connected to mains switch control module 27, the parallel connection of mains switch control module exports electric current and voltage detection module 29 to, and two-way power supply signal is after tested parallel-connected to host power supply power supply interface 10, standby host Power supply interface 11; Current/voltage detection module 28,29 is realized both-way communication with being connected of single chip control module 25.Three change over switches 2,3,4, RS485 network communication interface 5, RS232 serial communication interface 6, network interface 7 carries out both-way communication with single chip control module 25 respectively and is connected.A described F antenna signal interface 24 received audio signal output FM receiver modules 30, FM receiver module 30 is exported two-way signal in parallel and is connected to audio frequency detection module 31, then parallel connection outputs to single chip control module 25.
Described single chip control module 25 is mainly realized and is controlled function by ATM32F103VCT6 chip.Single chip control module 25 receives the transmitter state signal that network interface 7 transmits, and judges that whether the transmitting power of transmitter is lower than threshold value, if judge that lower than threshold value this road signal breaks down.When initial condition, give tacit consent to active and standby machine transmitter and all can normally work, three road host signals 12 ~ 14 output in star three mixers, launch by antenna, and three road standby host signals output to dummy load.Master transmitter break down (transmitting power is down to below thresholding) in the time that system is normally worked, fault message by Internet Transmission in switch, network interface 7 receives and is transferred to main control module 1 after fault message and judges, and diverter switch is switched out of order frequency; When receiving after fault message, single chip control module 25 detects that the standby host of identical frequency has mark fault point, and diverter switch is not worked, and sends warning message.
Described Switching Power Supply 26, is converted to 12V DC power supply for the power supply of this equipment by the 220V alternating current receiving.
Described mains switch control module 27, by two relays, receives after the control command of main control module 1, by adhesive and the power supply of opening the active and standby machine of control of shell fragment.
Described electric current and voltage detection module 28,29, by transforming circuit, is reduced to detected value by 220V power supply signal, and detected value is transferred to single chip control module 25, whether normally detects input voltage; Whether current detecting, through overcoupled circuits, is converted into after voltage by resistance at circuit output end, is transferred to single chip control module 25, normal to detect input current.
Described FM receiver module 30, receives after audio signal, by the AC signal of left and right acoustic channels, output to audio frequency detection module 31, by detecting circuit, AC signal is converted into direct current signal, is sent to single chip control module 25, and whether detect the FM signal of launching normal.
The utility model is transferred to local monitor management server by RS485 network communication interface 5 and RS232 serial communication interface 6 by device-dependent message, by the internet signal about transmitter state in network interface 7 desamplers, F antenna signal interface 24 is by antenna reception FM signal.
The utility model is simple in structure, cost is lower, high safety, perfect in shape and function, and has RS232, RS485 communication interface and network interface, can receive internet signal by switch.The status information transmission of transmitter is in switch, enter into this equipment by network interface, in the time that transmitter breaks down (transmitting power is down to below threshold value), the signal receiving by network interface is transferred to main control module, entered after judgement, by control change over switch, normal signal is outputed to mixer and launch by antenna again, fault-signal is switched in dummy load simultaneously.While realizing fault, the identical frequency signal of active and standby machine automatic mutual switches mutually, and active and standby machine backs up mutually.
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Claims (5)
1. the active and standby machine automatic switchover device of frequency modulated transmitter, comprise cabinet, it is characterized in that, main control module (1) is installed in cabinet, three change over switches (2, 3, 4), RS485 network communication interface (5), RS232 serial communication interface (6), network interface (7), F antenna signal interface (24), 200V controls power input interface (8), 220V transmitter supply input interface (9), host power supply power supply interface (10), standby host Power supply interface (11), 3 main frame RF signal input interfaces (12, 13 and 14), 3 standby host RF signal input interfaces (15, 16 and 17), three dummy load output interfaces (18, 19 and 20) and three mixer output interfaces (21, 22 and 23).
2. the active and standby machine automatic switchover device of frequency modulated transmitter according to claim 1, it is characterized in that, described 220V controls power input interface (8) and 220V transmitter supply input interface (9) is connected to main control module (1), and power supply output signal is outputed to host power supply power supply interface (10) and standby host Power supply interface (11) by main control module (1); F antenna signal interface (24) received audio signal outputs to main control module; Main control module (1) is realized both-way communication with being connected of three change over switches; RS485 network communication interface (5), RS232 serial communication interface (6), network interface (7) respectively with being connected and realizing both-way communication of main control module (1); 3 main frame RF signal input interfaces (12,13 and 14) are connected respectively to three change over switches (2,3,4); 3 standby host RF signal input interfaces (15,16 and 17) respective hosts frequency is connected respectively to three change over switches (2,3,4); Two outputs of three change over switches (2,3,4) are connected respectively to three dummy load output interfaces (18,19 and 20) and three mixer output interfaces (21,22 and 23).
3. the active and standby machine automatic switchover device of frequency modulated transmitter according to claim 1 and 2, it is characterized in that, described main control module (1) is by single chip control module (25), Switching Power Supply (26), current/voltage detection module (28,29), mains switch control module (27), FM receiver module (30) and audio frequency detection module (31) form; 220V controls power input interface (8) and is connected to Switching Power Supply (26), and Switching Power Supply (26) is connected to single chip control module (25); The signal of 220V transmitter supply input interface (9) outputs to electric current and voltage detection module (28), be connected to mains switch control module (27), the parallel connection of mains switch control module exports electric current and voltage detection module (29) to, and two-way power supply signal is after tested parallel-connected to host power supply power supply interface (10), standby host Power supply interface (11); Current/voltage detection module (28,29) is realized both-way communication with being connected of single chip control module (25); Three change over switches (2,3,4), RS485 network communication interface (5), RS232 serial communication interface (6), network interface (7) carries out both-way communication with single chip control module (25) respectively and is connected.
4. the active and standby machine automatic switchover device of frequency modulated transmitter according to claim 1 and 2, it is characterized in that, a described F antenna signal interface (24) received audio signal output FM receiver module (30), FM receiver module (30) output two-way signal in parallel is connected to audio frequency detection module (31), then parallel connection outputs to single chip control module (25).
5. the active and standby machine automatic switchover device of frequency modulated transmitter according to claim 3, is characterized in that, described single chip control module (25) is mainly realized and controlled function by ATM32F103VCT6 chip
.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420002959.4U CN203661058U (en) | 2014-01-03 | 2014-01-03 | Main/standby engine automatic switching device of frequency modulation transmitters |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420002959.4U CN203661058U (en) | 2014-01-03 | 2014-01-03 | Main/standby engine automatic switching device of frequency modulation transmitters |
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| Publication Number | Publication Date |
|---|---|
| CN203661058U true CN203661058U (en) | 2014-06-18 |
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| CN201420002959.4U Expired - Fee Related CN203661058U (en) | 2014-01-03 | 2014-01-03 | Main/standby engine automatic switching device of frequency modulation transmitters |
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| CN (1) | CN203661058U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900936A (en) * | 2019-04-02 | 2019-06-18 | 中山市凯美电子有限公司 | A kind of New-type radio-frequency power supply adaptor |
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2014
- 2014-01-03 CN CN201420002959.4U patent/CN203661058U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900936A (en) * | 2019-04-02 | 2019-06-18 | 中山市凯美电子有限公司 | A kind of New-type radio-frequency power supply adaptor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20180103 |
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| CF01 | Termination of patent right due to non-payment of annual fee |