CN103401628A - Broadcasting control box circuit - Google Patents
Broadcasting control box circuit Download PDFInfo
- Publication number
- CN103401628A CN103401628A CN2013103576992A CN201310357699A CN103401628A CN 103401628 A CN103401628 A CN 103401628A CN 2013103576992 A CN2013103576992 A CN 2013103576992A CN 201310357699 A CN201310357699 A CN 201310357699A CN 103401628 A CN103401628 A CN 103401628A
- Authority
- CN
- China
- Prior art keywords
- circuit
- audio
- power supply
- control unit
- control box
- 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.)
- Pending
Links
Landscapes
- Selective Calling Equipment (AREA)
Abstract
The invention provides a broadcasting control box circuit, which includes a power supply and audio board and a control panel that are connected, wherein the power supply and audio board includes a microphone module, a monitoring module and a power supply module; the control panel includes a control unit, a sound card circuit and a network card; the control unit is connected with the sound card circuit, the network card, a voltage stabilizing block and a monitoring circuit in the power supply and audio board respectively. The broadcasting control box circuit has the benefits that based on the scheme of network transmission broadcasting voice frequency, talkback voice frequency between cabs, talkback voice frequency between the cabs and passenger rooms and corresponding control commands, simulating voice frequency required to be transmitted is converted into digital files through a sound card, then the digital files are packed to a network packet for network transmission, CAT 5e wires and a reserved emergency voice frequency shielded wire serve as transmission media, the optimized circuit design improves the characteristics of electromagnetic interference, and the stable running of the system is guaranteed; the broadcasting control box circuit has the advantages of simple structure, convenience for mounting and debugging, little energy consumption, improved stability and the like.
Description
Technical field
The invention belongs to subway and take out objective field of information system, especially relate to a kind of Broadcasting Control box circuit.
Background technology
In the prior art, the subway drivers' cab Broadcasting Control box in the passenger information system of the field of traffic such as light rail, subway mainly adopts the transfer bus of 485 buses as control signal, and the analogue audio frequency line is as broadcasting for train audio-frequency bus and train intercommunication audio-frequency bus.The transmission means of sort signal needs three pairs of independently Shielded Twisted Pair or shielding tone frequency channel wires, and this gives the installation of vehicle-mounted passenger information system, the work and inconvenience that maintenance brings a lot of repetitions, has increased simultaneously cost.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of Broadcasting Control box circuit simple in structure, easy to use, especially is suitable for intercommunication audio frequency and drivers' cab and guest room intercommunication audio frequency and corresponding control command between transmission broadcast audio Network Based, drivers' cab.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of Broadcasting Control box circuit, comprise power supply and audio board and control board, described power supply and audio board are connected with described control board, and described power supply and audio board comprise microphone module, monitor module and power module;
Described microphone module comprises the microphone audio amplifier circuit, described microphone audio amplifier circuit is that two-stage is amplified, and the road of rationing the power supply is pressed in increase on the amplifying circuit of the second level, preventing that output signal is excessive causes distortion, the input of described microphone audio amplifier circuit is connected with microphone by socket, the output of described microphone audio amplifier circuit divides two-way, the flat cable of leading up to is connected to control board, and another road is connected by the emergent audio-frequency bus in emergent interface socket and outside after connecting emergent audio control circuit by relay;
Described monitoring module comprises monitoring circuit, and the output of described monitoring circuit is connected with monitoring loudspeaker by socket, and the input of described monitoring circuit is connected with control board;
Described power module comprises the first power transfer module and second source modular converter, the input of described the first power transfer module is connected with DC filter by socket, the output of described the first power transfer module is connected with the input of described second source modular converter, and the output of described second source modular converter is connected with the regulator block in control board;
Described control board comprises control unit, sound card circuit and network interface card, described control unit is connected with the monitoring circuit in described sound card circuit, network interface card, regulator block and power supply and audio board respectively, described control unit is connected with metal key-press by socket, the input of the monitoring circuit in the output of described sound card circuit and power supply and audio board is connected, the output of the microphone audio amplifier circuit in the input of described sound card circuit and described power supply and audio board is connected, described network interface card is connected with network interface, and described control unit also accesses emergent output control signal.
Further, the IO interface of described control unit also is connected with LED light, and 7 LED light complete respectively that power supply, active and standby, network speed, network connect, volume controls deixis, with control unit, directly are connected.
Further, described control unit also is connected with EEPROM by iic bus, is used for the storing IP address.
Further, described control unit also is connected with the jtag interface circuit.
Further, described metal key-press is four, and built-in LED lamp is controlled by control unit, when button is pressed, on the IO mouth level of the control unit that draws dragged down, complete identification, do simultaneously antistatic and process and increase circuit reliability.
Further, the sound card chip in described sound card circuit is UDA1341TS, and band AD and DA, be connected with control unit by IIS bus interface and L3 interface, completes the conversion of audio analog signals and audio digital signals.
Further, described network card chip is DP83848C, is connected with control unit by data/address bus on the one hand, is connected with outside netting twine by network isolation transformer H1102 and EMI device on the other hand, completes the transmission of networked physics layer.
Further, described microphone is moving-coil type, is inserted in by the CANNON seat on the panel of control, then by the CH2.54-2 socket, connects power supply and audio board.
Advantage and good effect that the present invention has are: owing to adopting technique scheme, the scheme of intercommunication audio frequency and drivers' cab and guest room intercommunication audio frequency and corresponding control command between transmission broadcast audio Network Based, drivers' cab.The analogue audio frequency of needs transmission is converted to by sound card the form that digital document is packaged into network packet again realizes Internet Transmission, transmission medium is the emergent audio frequency shielding conductor of CAT5E UTP cable and a reservation, improve the characteristic of electromagnetic interference by Optimization Design of Electronic Circuits, guaranteed the stable operation of system; Have simple in structurely, Installation and Debugging are convenient, and energy loss reduces, the advantages such as stability increase.
Description of drawings
Fig. 1 is circuit diagram of the present invention.
Embodiment
As shown in Figure 1, a kind of Broadcasting Control box of the present invention circuit, comprise power supply and audio board and control board, and described power supply and audio board are connected with described control board, and described power supply and audio board comprise microphone module, monitor module and power module; Described microphone module comprises the microphone audio amplifier circuit, described microphone audio amplifier circuit is that two-stage is amplified, and the road of rationing the power supply is pressed in increase on the amplifying circuit of the second level, preventing that output signal is excessive causes distortion, the input of described microphone audio amplifier circuit is connected with microphone by socket, the output of described microphone audio amplifier circuit divides two-way, the flat cable of leading up to is connected to control board, and another road is connected by the emergent audio-frequency bus in emergent interface socket and outside after connecting emergent audio control circuit by relay; Described monitoring module comprises monitoring circuit, and the output of described monitoring circuit is connected with monitoring loudspeaker by socket, and the input of described monitoring circuit is connected with control board; Described power module comprises the first power transfer module and second source modular converter, the input of described the first power transfer module is connected with DC filter by socket, the output of described the first power transfer module is connected with the input of described second source modular converter, and the output of described second source modular converter is connected with the regulator block in control board; Described control board comprises control unit, sound card circuit and network interface card, described control unit is connected with the monitoring circuit in described sound card circuit, network interface card, regulator block and power supply and audio board respectively, described control unit is connected with metal key-press by socket, the input of the monitoring circuit in the output of described sound card circuit and power supply and audio board is connected, the output of the microphone audio amplifier circuit in the input of described sound card circuit and described power supply and audio board is connected, described network interface card is connected with network interface, and described control unit also accesses emergent output control signal.the IO interface of described control unit also is connected with LED light, 7 LED light are completed respectively power supply, active and standby, network speed, network connects, volume controls deixis, directly be connected with control unit, described control unit also is connected with EEPROM by iic bus, be used for the storing IP address, described control unit also is connected with the jtag interface circuit, described metal key-press is four, built-in LED lamp, controlled by control unit, when button is pressed, on the IO mouth level of the control unit that draws dragged down, complete identification, do simultaneously antistatic and process the increase circuit reliability, sound card chip in described sound card circuit is UDA1341TS, band AD and DA, be connected with control unit by IIS bus interface and L3 interface, complete the conversion of audio analog signals and audio digital signals, described network card chip is DP83848C, be connected with control unit by data/address bus on the one hand, be connected with outside netting twine by network isolation transformer H1102 and EMI device on the other hand, complete the transmission of networked physics layer, described microphone is moving-coil type, be inserted in by the CANNON seat on the panel of control, connect power supply and audio board by the CH2.54-2 socket again.
The course of work of this example: during work, outside direct current 110V power supply provides the DC110V general supply through DC wave filter for broadcasting box power supply and audio board, the first power transfer module and second source modular converter provide respectively DC24V and DC5V as power supply and audio board, control board circuit supply voltage, + 24V adopts Switching Power Supply TL20-110S24U conversion to generate, and output current is about 0.8A.+ 5V adopts Switching Power Supply LM2576 conversion to generate, and output current is about 3A.Moving-coil microphone produces-and 38dB audio frequency small-signal is connected to power supply and audio board 2.54 sockets, generate the 0dB signal through the microphone audio amplifier circuit, the flat cable of leading up to is connected to control board, process through the control unit in control board, another road is connected with the emergent audio-frequency bus in outside by 3.96 emergent interface sockets after connecting emergent audio control circuit by relay.The 3W monitoring loudspeaker is connected with power supply and audio board by 3.96 sockets, and the monitoring amplification chip in monitoring circuit is PAM8303DBSC, and the audio frequency input in monitoring circuit is provided by control board through Flat cable connector, and audio frequency output is exported through monitoring loudspeaker.When network broke down, the audio broadcasting of microphone can be by the emergent audio control circuit output of reserving, and simulated audio signal is output as 0dB, balance.In outside CAT5E UTP cable, TX+, TX-, RX+, RX-are connected with control board through 2.54 sockets, then through the EMI device, with network isolation transformer, are connected, and are connected with control unit STM32F207 by network interface card DP83848C afterwards.sound card chip UDA1341TS band AD and DA in the sound card circuit, be connected to control unit by IIS bus interface and L3 interface, complete the conversion of audio analog signals and audio digital signals, four metal key-press are connected with control board by four 2.54 sockets, controlled by control unit, when button is pressed, on the IO mouth level of the control unit that draws dragged down, complete identification, do simultaneously antistatic and process the increase circuit reliability, the IO mouth of control unit is directly controlled 7 indicator lights, complete respectively power supply, active and standby, network speed, network connects, volume controls deixis.
Above one embodiment of the present of invention are had been described in detail, but described content is only 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., within all should still belonging to patent covering scope of the present invention.
Claims (9)
1. Broadcasting Control box circuit, it is characterized in that: a kind of Broadcasting Control box circuit, comprise power supply and audio board and control board, described power supply and audio board are connected with described control board, and described power supply and audio board comprise microphone module, monitor module and power module;
Described microphone module comprises the microphone audio amplifier circuit, described microphone audio amplifier circuit is that two-stage is amplified, and the road of rationing the power supply is pressed in increase on the amplifying circuit of the second level, preventing that output signal is excessive causes distortion, the input of described microphone audio amplifier circuit is connected with microphone by socket, the output of described microphone audio amplifier circuit divides two-way, the flat cable of leading up to is connected to control board, and another road is connected by the emergent audio-frequency bus in emergent interface socket and outside after connecting emergent audio control circuit by relay;
Described monitoring module comprises monitoring circuit, and the output of described monitoring circuit is connected with monitoring loudspeaker by socket, and the input of described monitoring circuit is connected with control board;
Described power module comprises the first power transfer module and second source modular converter, the input of described the first power transfer module is connected with DC filter by socket, the output of described the first power transfer module is connected with the input of described second source modular converter, and the output of described second source modular converter is connected with the regulator block in control board;
Described control board comprises control unit, sound card circuit and network interface card, described control unit is connected with the monitoring circuit in described sound card circuit, network interface card, regulator block and power supply and audio board respectively, described control unit is connected with metal key-press by socket, the input of the monitoring circuit in the output of described sound card circuit and power supply and audio board is connected, the output of the microphone audio amplifier circuit in the input of described sound card circuit and described power supply and audio board is connected, described network interface card is connected with network interface, and described control unit also accesses emergent output control signal.
2. a kind of Broadcasting Control box circuit according to claim 1, it is characterized in that: the IO interface of described control unit also is connected with LED light.
3. a kind of Broadcasting Control box circuit according to claim 1 and 2, it is characterized in that: described control unit also is connected with EEPROM by iic bus, is used for the storing IP address.
4. a kind of Broadcasting Control box circuit according to claim 3, it is characterized in that: described control unit also is connected with the jtag interface circuit.
5. a kind of Broadcasting Control box circuit according to claim 1, it is characterized in that: described metal key-press is four, built-in LED lamp, controlled by control unit.
6. a kind of Broadcasting Control box circuit according to claim 1, it is characterized in that: the sound card chip in described sound card circuit is UDA1341TS, band AD and DA, be connected with control unit by IIS bus interface and L3 interface, completes the conversion of audio analog signals and audio digital signals.
7. a kind of Broadcasting Control box circuit according to claim 1, it is characterized in that: described network card chip is DP83848C, be connected with control unit by data/address bus on the one hand, be connected with outside netting twine by network isolation transformer H1102 and anti-electromagnetic interference device on the other hand, complete the transmission of networked physics layer.
8. a kind of Broadcasting Control box circuit according to claim 1, it is characterized in that: described microphone is moving-coil type, is inserted in by the CANNON seat on the panel of control, then by the CH2.54-2 socket, connects power supply and audio board.
9. a kind of Broadcasting Control box circuit according to claim 2, it is characterized in that: described LED light is 7, completes that power supply, active and standby, network speed, network connect, volume controls deixis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103576992A CN103401628A (en) | 2013-08-15 | 2013-08-15 | Broadcasting control box circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103576992A CN103401628A (en) | 2013-08-15 | 2013-08-15 | Broadcasting control box circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103401628A true CN103401628A (en) | 2013-11-20 |
Family
ID=49565179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103576992A Pending CN103401628A (en) | 2013-08-15 | 2013-08-15 | Broadcasting control box circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103401628A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104253664A (en) * | 2014-09-18 | 2014-12-31 | 易程（苏州）智能***有限公司 | Train broadcasting control box based on Ethernet network |
| CN104658136A (en) * | 2013-11-22 | 2015-05-27 | 天津市北海通信技术有限公司 | Digital alarm device |
| CN104767497A (en) * | 2015-03-11 | 2015-07-08 | 大连理工大学 | Subway train broadcast volume automatic adjustment method |
| CN104253664B (en) * | 2014-09-18 | 2018-08-31 | 苏州华启智能科技有限公司 | A kind of broadcasting for train control box based on ethernet network |
| CN112383377A (en) * | 2019-09-27 | 2021-02-19 | 北京城建设计发展集团股份有限公司 | Multifunctional digital broadcast control box |
-
2013
- 2013-08-15 CN CN2013103576992A patent/CN103401628A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104658136A (en) * | 2013-11-22 | 2015-05-27 | 天津市北海通信技术有限公司 | Digital alarm device |
| CN104253664A (en) * | 2014-09-18 | 2014-12-31 | 易程（苏州）智能***有限公司 | Train broadcasting control box based on Ethernet network |
| CN104253664B (en) * | 2014-09-18 | 2018-08-31 | 苏州华启智能科技有限公司 | A kind of broadcasting for train control box based on ethernet network |
| CN104767497A (en) * | 2015-03-11 | 2015-07-08 | 大连理工大学 | Subway train broadcast volume automatic adjustment method |
| CN112383377A (en) * | 2019-09-27 | 2021-02-19 | 北京城建设计发展集团股份有限公司 | Multifunctional digital broadcast control box |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106952650B (en) | A kind of train voice amplifying unit based on ARM+FPGA framework | |
| CN103925583A (en) | Wireless speaker system and wireless data transmission method | |
| CN103401628A (en) | Broadcasting control box circuit | |
| CN102497609B (en) | Wireless network sound system | |
| CN203641942U (en) | LED lighting device and stereo Bluetooth loudspeaker box system | |
| CN203406886U (en) | Circuit of broadcast control box | |
| CN210225011U (en) | AI vehicle intelligent charger | |
| CN208273021U (en) | A kind of passenger information system | |
| CN204119245U (en) | A kind of train global function numerical model analysis intelligent broadcast control box | |
| CN205068789U (en) | Multilingual system of calling out stops and passenger train | |
| CN103697354A (en) | LED (light emitting diode) illumination device and stereophonic sound Bluetooth sound box system | |
| CN206611415U (en) | A kind of multi-party full duplex intercom system of subway train | |
| CN207011060U (en) | A kind of adaptive lamp light control system based on stage set sound | |
| CN201878312U (en) | Sounder for realizing hybrid-transmission and separation of surround sound and super bass | |
| CN205249314U (en) | Indoor commander communication system | |
| CN203466927U (en) | Multimedia switching box used for automobile | |
| CN202772911U (en) | Multiple-bus mine-used broadcast communication network downhole branch control station based on priority | |
| CN206363118U (en) | Heavy loading locomotive manipulates control accessory system | |
| CN204068875U (en) | based on the multi-channel digital audio amplifier of FPGA | |
| CN208094598U (en) | Onboard system based on DANTE network technologies | |
| CN102098535A (en) | Video entertainment service call system of train | |
| CN203013250U (en) | Vehicle-mounted intelligent audio switching terminal system | |
| CN210986405U (en) | Audio switching circuit | |
| CN207732951U (en) | A kind of sound equipment for supporting more USB flash disks and more bluetooths to play | |
| CN103401518A (en) | Digital power amplifier unit of passenger compartment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131120 |
|
| WD01 | Invention patent application deemed withdrawn after publication |