CN102904656A - Digital train broadcasting transmitter - Google Patents
Digital train broadcasting transmitter Download PDFInfo
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- CN102904656A CN102904656A CN2012103723323A CN201210372332A CN102904656A CN 102904656 A CN102904656 A CN 102904656A CN 2012103723323 A CN2012103723323 A CN 2012103723323A CN 201210372332 A CN201210372332 A CN 201210372332A CN 102904656 A CN102904656 A CN 102904656A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
Provided by the invention is a digital train broadcasting transmitter that comprises a power supply module, an output control module, a control main board and an output display. An input terminal of a power filter is connected with a 48-V train power supply and an output terminal thereof is connected with a rectification circuit; a voltage sampling circuit, a current sampling circuit, a power amplification board is connected in parallel with the rectification circuit; a switching board for switching of a main power amplifier and standby power amplifier is connected with a primary coil of an output transformer and a secondary coil of the output transformer is connected with a broadcast output binding post; the main power amplifier and the standby power amplifier are connected with the control main board; control signals and sampling signals are inputted into the control main board; and the control main board is connected with an emergency control switch, the output display, a monitoring loudspeaker, a pre-stage amplification board, a radio antenna and an AMR module. According to the invention, the beneficial effects of the digital train broadcasting transmitter are as follows: microphone broadcasting, built-in microphone broadcasting, wireless microphone broadcasting, voice synthesis broadcasting, and radio broadcasting can be realized and insertion broadcasting can also be carried out. Meanwhile, train state monitoring is carried out according to the train broadcasting requirement.
Description
Technical field
The present invention relates to a kind of train broadcast transmitter, especially relate to a kind of digital train broadcast machine.
Background technology
The audio playing apparatus of conventional train broadcasting uses analog audiotape to play form, the shortcoming of this mode is that the announcer will be inserted into the audiotape that will play in the audio playing apparatus first when operation, then searching the content that needs to play by the rewinding operation plays, this mode operates fully carries out by means of announcer's experience, therefore operation is very inconvenient, can not be accurate, play in time, simultaneously, because audiotape in use, the wearing and tearing of itself also can cause the decline of play quality, in case audiotape is lost or infringement can have a strong impact on normal broadcasting.
Summary of the invention
The problem to be solved in the present invention provides a kind of digital train broadcast machine, can microphone broadcasting, wireless microphone broadcasting, phonetic synthesis broadcasting and FM radio broadcasting, when some fault appears in equipment, also can press emergency key, carry out emergent broadcast by microphone.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of digital train broadcast machine comprises power module, output control module, control mainboard and output display; Described power module comprises the train power supply of 48V and the power-supply filter that carries out the inhibition of power supply disturbance fluctuation;
Described output control module comprises rectification circuit, voltage sampling circuit, current sampling circuit and switch boards;
The input of described power-supply filter connects 48V train power supply, and output connects rectification circuit, and voltage sampling circuit, current sampling circuit, power amplification plate are in parallel with rectification circuit;
Described power amplification plate comprises main power board and standby power board;
Be used for main power board and be connected with the primary coil of output transformer with the switch boards that the power board of being connected switches, the secondary coil of output transformer is connected with the broadcasting output wiring terminal;
Described control mainboard comprises CPU, audio selection and volume control module, monitoring module, recording module, radio receiver module;
Described monitoring module is controlled respectively and is monitored and pre-volume of listening, and simulation realizes the selection control in monitoring source;
Described audio selection and volume control module realize that microphone and circuit are to phonetic synthesis and wireless intercutting;
Described main power board and standby power board are provided with the power amplifier protective circuit;
Main power board all is connected with the control mainboard with standby power board, pin of control mainboard connects power supply, a pin ground connection, control signal and sampled signal input control mainboard, the control mainboard scoops out anxious control switch, output display, monitoring loudspeaker, prime amplification board, radio antenna and AMR module.
Further, comprise SD card interface and USB interface on the described AMR module.
Further, described prime amplification board is used for information source and amplifies, and comprises that microphone amplifies and be used for the circuit amplification of wireless microphone.
Further, take over control the reversal connection diode in switch boards, to guarantee device security.
Further, the L channel of described audio selection and volume control module passage A, B connects the phonetic synthesis audio frequency, and the L channel of channel C, D receives the sound audio frequency, the R channel of passage A, a C audio frequency of answering, the R channel link audio frequency of channel B, D.
Further, with light-emitting diode the audio frequency of output is done amplitude limiting processing in the described prime amplification board.
Further, be built-in with microphone on the described prime amplification board.
Further, described control mainboard connects the GPS module, and the serial ports of described control mainboard is connected with described AMR module, by AMR resume module GPS serial data, realizes automatically location automatic broadcasting.
Further, described output display 4 comprises LCD display and the touch-screen of being located on the LCD display.
Advantage and good effect that the present invention has are: owing to adopting technique scheme, train broadcast transmitter can be broadcasted with microphone, built-in microphone is broadcasted, wireless microphone (or external information source) is broadcasted, phonetic synthesis is broadcasted, radio also can intercut.Phonetic synthesis broadcasting comprises on schedule Auto broadcast, according to Auto broadcast and the artificial selection broadcasting of GPS orientation triggering.Radio comprises FM/AM broadcasting.Can listen in advance each road information source and monitor broadcasting output.Can select the recording storage to multi-information source, and play when needed.Automatically (during the power amplifier excess Temperature) switches and the active and standby power amplifier of manual switchover.The state that can show output level.Have power-on protection, overcurrent protection, under-voltage protection function.Power supply status be can monitor, voltage status and current status comprised.Can monitor the state of temperature of power amplifier.Can test the state of power amplifier.
Description of drawings
Fig. 1 is theory diagram of the present invention;
Fig. 2 is audio selection of the present invention and volume control module schematic diagram;
Fig. 3 is master board theory diagram of the present invention.
Among the figure:
1, power module 2, output control module 3, control mainboard
4, output display 5, power-supply filter 6, rectification circuit
7, voltage sampling circuit 8, current sampling circuit 9, switch boards
10, main power board 11, standby power board 12, emergent control switch
13, prime amplification board 14, AMR module 15, SD card interface
16, usb 17, GPS module 18, radio antenna
Embodiment
As shown in Figure 1, 2, the invention provides a kind of digital train broadcast machine, comprise power module 1, output control module 2, control mainboard 3 and output display 4; Described power module 1 comprises the train power supply of 48V and the power-supply filter 5 that carries out the inhibition of power supply disturbance fluctuation;
Described output control module 2 comprises rectification circuit 6, voltage sampling circuit 7, current sampling circuit 8 and switch boards 9;
The input of described power-supply filter 5 connects 48V train power supply, and output connects rectification circuit 6, and voltage sampling circuit 7, current sampling circuit 8, power amplification plate are in parallel with rectification circuit;
Described power amplification plate comprises main power board 10 and standby power board 11;
Be used for main power board 10 and be connected with the primary coil of output transformer with the switch boards 9 that the power board of being connected 11 switches, the secondary coil of output transformer is connected with the broadcasting output wiring terminal;
Described control mainboard 3 comprises CPU, audio selection and volume control module, monitoring module, recording module, radio receiver module;
Described monitoring module is controlled respectively and is monitored and pre-volume of listening, and simulation realizes the selection control in monitoring source;
Described audio selection and volume control module realize that microphone and circuit are to phonetic synthesis and wireless intercutting;
Described main power board 10 and standby power board 11 are provided with the power amplifier protective circuit;
Described output display 4 comprises LCD display and the touch-screen of being located on the LCD display.
The course of work of this example: such as Fig. 1,48V car electricity is power devices.When mains switch was closed, control mainboard 3 acquiescence output power amplifier " SLEEP " status signals after control mainboard 3 is finished startup, postponed the corresponding time after (about 35 seconds, ARM module 14 is finished startups), export power amplifier " WORK " signal.At this moment, start power amplifier.This equipment has two power boards, is switched by switch boards 9 controls.On control mainboard 3, amplifier is amplified the temperature signal that monitors, and carries out the AD conversion by CPU, determines the temperature value of power amplifier, and temperature information is sent to ARM module 14, shows in LCD display.When the temperature of power amplifier is higher than 70 when spending, main power board 10 and standby power board 11 automatically switch.2 pairs of voltages of output control module, current sample connect control mainboard 3 by cable, and the CPU on the control mainboard 3 carries out the AD conversion to sampled signal, and the voltage that obtains quantizing and current value are sent to ARM module 14 by serial ports, show in LCD display.The prime amplification board comprises that microphone amplifies and circuit amplifies, and amplification circuits is placed on the prime amplification board 13.Line applications is in wireless microphone input, the input of MP3 source of sound etc., and the prime amplification board 13 interior Electret condenser microphones that arrange are used for microphone broadcasting for subsequent use, select by control mainboard 3.The transformer isolation that 1:1 is all passed through in microphone input and circuit input is to prevent mutual interference.Such as Fig. 2, the L channel of audio selection and volume control module passage A, B connects the phonetic synthesis audio frequency, and the L channel of channel C, D receives the sound audio frequency, the R channel of passage A, a C audio frequency of answering, the R channel link audio frequency of channel B, D.Microphone and circuit can intercut phonetic synthesis and broadcast receiver.Such as Fig. 3, in control mainboard 3, with the volume control IC of a slice two passages, control is monitored and pre-volume of listening respectively, and simulation realizes the selection control in monitoring source.The volume control chip is PT2257.Control mainboard 3 can monitor the electric current of equipment, and on the other hand, control mainboard 3 is by detecting broadcasting output audio, the as can be known size of output.Fin at power amplifier is installed NTC, with the temperature of monitoring power amplifier.The NTC two ends connect control mainboard 3 by cable.The GPS module is contained on the rear board of speech amplifier casing, is connected to control mainboard 3 by cable, rs 232 serial interface signal is connected to ARM module 14 again, processes the GPS serial data by ARM module 14.Realize automatically location automatic broadcasting.
More than one embodiment of the present of invention are had been described in detail, but described content only is preferred embodiment of the present invention, can not be considered to be used to limiting practical range of the present invention.All equalizations of doing according to the present patent application scope change and improve etc., all should still belong within the patent covering scope of the present invention.
Claims (9)
1. a digital train broadcast machine comprises power module (1), output control module (2), control mainboard (3) and output display (4); It is characterized in that: described power module (1) comprises the train power supply of 48V and the power-supply filter (5) that carries out the inhibition of power supply disturbance fluctuation;
Described output control module (2) comprises rectification circuit (6), voltage sampling circuit (7), current sampling circuit (8) and switch boards (9);
The input of described power-supply filter (5) connects 48V train power supply, and output connects rectification circuit (6), and voltage sampling circuit (7), current sampling circuit (8), power amplification plate are in parallel with rectification circuit;
Described power amplification plate comprises main power board (10) and standby power board (11);
Be used for power board (10) and be connected with the primary coil of output transformer with the switch boards (9) that the power board of being connected (11) switches, the secondary coil of output transformer is connected with the broadcasting output wiring terminal;
Described control mainboard (3) comprises CPU, audio selection and volume control module, monitoring module, recording module, radio receiver module;
Described monitoring module is controlled respectively and is monitored and pre-volume of listening, and simulation realizes the selection control in monitoring source;
Described audio selection and volume control module realize that microphone and circuit are to phonetic synthesis and wireless intercutting;
Described main power board (10) and standby power board (11) are provided with the power amplifier protective circuit;
Main power board (10) all is connected with control mainboard (3) with standby power board (11), (3) pins of control mainboard connect power supply, a pin ground connection, control signal and sampled signal input control mainboard (3), control mainboard (3) scoops out anxious control switch (12), output display (4), monitoring loudspeaker, prime amplification board (13), radio antenna (18) and AMR module (14).
2. digital train broadcast machine according to claim 1 is characterized in that: comprise SD card interface (15) and USB interface (16) on the described AMR module (14).
3. digital train broadcast machine according to claim 1 is characterized in that: described prime amplification board (13) is used for information source and amplifies, and comprises that microphone amplifies and the circuit that is used for wireless microphone amplifies.
4. digital train broadcast machine according to claim 1 is characterized in that: take over control the reversal connection diode in switch boards (9), to guarantee device security.
5. digital train broadcast machine according to claim 1, it is characterized in that: the L channel of described audio selection and volume control module passage A, B connects the phonetic synthesis audio frequency, the L channel of channel C, D receives the sound audio frequency, the R channel of passage A, a C audio frequency of answering, the R channel link audio frequency of channel B, D.
6. digital train broadcast machine according to claim 1 is characterized in that: with light-emitting diode the audio frequency of output is done amplitude limiting processing in the described prime amplification board (13).
7. digital train broadcast machine according to claim 1 is characterized in that: be built-in with microphone on the described prime amplification board (13).
8. digital train broadcast machine according to claim 1, it is characterized in that: described control mainboard (3) connects GPS module (17), the serial ports of described control mainboard (3) is connected with described AMR module (14), process the GPS serial data by AMR module (14), realize automatically location automatic broadcasting.
9. digital train broadcast machine according to claim 1 is characterized in that: described output display (4) comprises LCD display and is located at touch-screen on the LCD display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103723323A CN102904656A (en) | 2012-09-28 | 2012-09-28 | Digital train broadcasting transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103723323A CN102904656A (en) | 2012-09-28 | 2012-09-28 | Digital train broadcasting transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102904656A true CN102904656A (en) | 2013-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012103723323A Pending CN102904656A (en) | 2012-09-28 | 2012-09-28 | Digital train broadcasting transmitter |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103399838A (en) * | 2013-08-15 | 2013-11-20 | 天津市北海通信技术有限公司 | Serial port controller |
| CN103414530A (en) * | 2013-07-25 | 2013-11-27 | 易程（苏州）智能系统有限公司 | Novel guest room server |
| CN103607252A (en) * | 2013-11-22 | 2014-02-26 | 天津市北海通信技术有限公司 | Standby pool switching method for PA system |
| CN103974180A (en) * | 2014-04-23 | 2014-08-06 | 广州市迪士普音响科技有限公司 | Power amplifier unit deploying method of power amplifier matrix |
| CN105281856A (en) * | 2015-11-11 | 2016-01-27 | 北京合智创展科技有限责任公司 | Public broadcasting system and method |
| CN106941387A (en) * | 2017-05-09 | 2017-07-11 | 成都西亿达电子科技有限公司 | Emergent broadcast terminal fault self-checking circuit, system and method |
| CN107205200A (en) * | 2017-07-15 | 2017-09-26 | 江苏中协智能科技有限公司 | A kind of Autonomous test failure and the audio frequency power amplifier exported with backup |
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| CN201146513Y (en) * | 2007-12-24 | 2008-11-05 | 赵苏铭 | Digital type train broadcasting machine |
| CN201270517Y (en) * | 2008-10-16 | 2009-07-08 | 上海神剑铁路通信信号有限公司 | Tunnel broadcast system |
| CN202856747U (en) * | 2012-09-28 | 2013-04-03 | 天津市北海通信技术有限公司 | Digital train broadcasting machine |
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| KR20060079524A (en) * | 2004-12-31 | 2006-07-06 | 신우전자 주식회사 | Apparatus for operating car amplifier and amplifier embedding such apparatus |
| CN201146513Y (en) * | 2007-12-24 | 2008-11-05 | 赵苏铭 | Digital type train broadcasting machine |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414530A (en) * | 2013-07-25 | 2013-11-27 | 易程（苏州）智能系统有限公司 | Novel guest room server |
| CN103399838A (en) * | 2013-08-15 | 2013-11-20 | 天津市北海通信技术有限公司 | Serial port controller |
| CN103399838B (en) * | 2013-08-15 | 2016-08-10 | 天津市北海通信技术有限公司 | A kind of serial ports controller |
| CN103607252A (en) * | 2013-11-22 | 2014-02-26 | 天津市北海通信技术有限公司 | Standby pool switching method for PA system |
| CN103974180A (en) * | 2014-04-23 | 2014-08-06 | 广州市迪士普音响科技有限公司 | Power amplifier unit deploying method of power amplifier matrix |
| CN103974180B (en) * | 2014-04-23 | 2017-08-08 | 广州市迪士普音响科技有限公司 | A kind of power amplifier unit concocting method of power amplifier battle array |
| CN105281856A (en) * | 2015-11-11 | 2016-01-27 | 北京合智创展科技有限责任公司 | Public broadcasting system and method |
| CN106941387A (en) * | 2017-05-09 | 2017-07-11 | 成都西亿达电子科技有限公司 | Emergent broadcast terminal fault self-checking circuit, system and method |
| CN107205200A (en) * | 2017-07-15 | 2017-09-26 | 江苏中协智能科技有限公司 | A kind of Autonomous test failure and the audio frequency power amplifier exported with backup |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130130 |