CN108566268A - Full duplex intercom system applied to rail traffic emulation bus - Google Patents
Full duplex intercom system applied to rail traffic emulation bus Download PDFInfo
- Publication number
- CN108566268A CN108566268A CN201711323126.2A CN201711323126A CN108566268A CN 108566268 A CN108566268 A CN 108566268A CN 201711323126 A CN201711323126 A CN 201711323126A CN 108566268 A CN108566268 A CN 108566268A
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- Prior art keywords
- emulation bus
- module
- transceiver module
- work
- full duplex
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
- H04Q5/24—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange for two-party-line systems
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Abstract
Present invention is disclosed the full duplex intercom systems applied to rail traffic emulation bus, including the two-wire system emulation bus being set on train and the communication unit being set in arbitrary compartment, communication unit includes that enjoy a double blessing work intercommunication module, instruction transceiver module and being separately connected is enjoyed a double blessing work intercommunication module and the processor that instructs transceiver module, wherein, instruction transceiver module and work intercommunication module of enjoying a double blessing are connected in parallel in two-wire system emulation bus, instruction transceiver module includes that level superposition and level detection, work of enjoying a double blessing intercommunication module are connected by a capacitance with two-wire system emulation bus.The present invention uses two-wire system emulation bus, can not only transmit audio, can also transmit call request and hang-up signal, greatly reduces interior wiring difficulty；Analogue audio frequency increases audio anti-interference by differential transfer after isolation；Using special full duplex intercommunication IC circuit designs, reliable and stable, sound clarity is suitable for rail traffic car speech communication.
Description
Technical field
The present invention relates to the full duplex intercom systems applied to rail traffic emulation bus, belong to rail traffic voice communication
The technical field of equipment.
Background technology
Rail transportation vehicle-mounted voice system is for carrying out voice between train operator, train chief, crew member in train
The system of call.
The vehicle-mounted voice system of current track traffic uses two kinds of transmission modes, emulation bus communication and IP network communications.Mould
Quasi- bus is transmitted using 4 lines, and 2 lines, which transmit analogue audio frequency, realizes that half-duplex intercommunication, 2 lines carry out the request of RS485 communication transfers and extension
Break signal；IP network communications mode is transmitted by Ethernet realizes full duplex intercommunication.Two ways cuts both ways, and analogue audio frequency is total
Line transmission is easy to be disturbed and interior wiring is cumbersome, but transmission channel is stablized, and failure rate is low.IP network communications are realized simpler
It is single, but limited network, once network failure, intercommunication will fail.
Invention content
Present invention aim to address above-mentioned the deficiencies in the prior art, the transmission of four lines and IP network communications there are problem,
Full duplex intercom system applied to rail traffic emulation bus is provided.
In order to achieve the above object, the technical solution adopted in the present invention is：
Applied to the full duplex intercom system of rail traffic emulation bus,
Including the two-wire system emulation bus being set on train and the communication unit being set in arbitrary compartment,
The communication unit include enjoy a double blessing work intercommunication module, instruction transceiver module and be separately connected it is described enjoy a double blessing work intercommunication module with
The processor of transceiver module is instructed,
Wherein, described instruction transceiver module is connected in parallel on the work intercommunication module of enjoying a double blessing in the two-wire system emulation bus, described
Instruction transceiver module includes that level superposition and level detection, the work intercommunication module of enjoying a double blessing pass through a capacitance and two line
Emulation bus processed is connected.
Preferably, described instruction transceiver module includes the superposition of 24V level and 24V level detections.
The beneficial effects are mainly as follows：
Using two-wire system emulation bus, audio can not only be transmitted, call request and hang-up signal can be also transmitted, greatly reduce car
Connect up difficulty；Analogue audio frequency increases audio anti-interference by differential transfer after isolation；Using special full duplex intercommunication IC circuits
Design, reliable and stable, sound clarity are suitable for rail traffic car speech communication.
Description of the drawings
Fig. 1 is the structural schematic diagram for the full duplex intercom system that the present invention is applied to rail traffic emulation bus.
Specific implementation mode
The present invention provides the full duplex intercom system applied to rail traffic emulation bus.Below in conjunction with attached drawing to the present invention
Technical solution is described in detail, so that it is more readily understood and grasps.
Applied to the full duplex intercom system of rail traffic emulation bus, including the two-wire system simulation being set on train is total
Line and the communication unit being set in arbitrary compartment, communication unit include enjoy a double blessing work intercommunication module, instruction transceiver module and difference
Connect the processor of enjoy a double blessing work intercommunication module and instruction transceiver module, wherein instruct transceiver module and enjoy a double blessing work intercommunication module simultaneously
It is associated in two-wire system emulation bus, instruction transceiver module includes level superposition and level detection, and work of enjoying a double blessing intercommunication module is by one
Capacitance is connected with two-wire system emulation bus.Specifically, instruction transceiver module includes the superposition of 24V level and 24V level detections.
Carry out principle description：
After arbitrary communication unit request communication, 24V level is superimposed for a period of time to emulation bus by relay, level detection is adopted
Output information to processor, processor opens the incoming call prompting sound for work intercommunication module of enjoying a double blessing, driver or service on buses or trains after collecting 24V level
24V level is superimposed to emulation bus for a period of time, and open work intercommunication module of enjoying a double blessing when personnel connect also by relay
Voice transfer channel, meanwhile, first communication unit also opens voice transfer channel after detecting 24V level, thus establishes
The voice transfer channels of two telephone boothes.Direct current 24V level is by that will not enter work intercommunication module of enjoying a double blessing after capacitance
Transformer does not influence the transmission of analogue audio frequency in bus.
Full duplex intercommunication IC has MIC input gains and mute control, level detector, output pad and ambient noise
The functions such as monitoring can be adjusted the sound effect of intercommunication by changing peripheral circuit capacitance-resistance value size to suitable for train communication
State.
The power amplifier of drive the speaker is the amplifier with maximum 10W power, and with 4 grades of gains controls with it is quiet
Sound control system, volume maximum meet voice communication demand in train up to 100 decibels.
By above description it can be found that the present invention is applied to the full duplex intercom system of rail traffic emulation bus, adopt
With two-wire system emulation bus, audio can not only be transmitted, can also transmit call request and hang-up signal, it is difficult to greatly reduce interior wiring
Degree；Analogue audio frequency increases audio anti-interference by differential transfer after isolation；Using special full duplex intercommunication IC circuit designs,
Reliable and stable, sound clarity is suitable for rail traffic car speech communication.
Technical scheme of the present invention is fully described above, it should be noted that specific embodiment party of the invention
Formula is simultaneously not limited by the description set out above, the Spirit Essence of those skilled in the art according to the present invention structure, method or
All technical solutions that function etc. is formed using equivalents or equivalent transformation, all fall within protection scope of the present invention
Within.
Claims (2)
1. the full duplex intercom system applied to rail traffic emulation bus, it is characterised in that：
Including the two-wire system emulation bus being set on train and the communication unit being set in arbitrary compartment,
The communication unit include enjoy a double blessing work intercommunication module, instruction transceiver module and be separately connected it is described enjoy a double blessing work intercommunication module with
The processor of transceiver module is instructed,
Wherein, described instruction transceiver module is connected in parallel on the work intercommunication module of enjoying a double blessing in the two-wire system emulation bus, described
Instruction transceiver module includes that level superposition and level detection, the work intercommunication module of enjoying a double blessing pass through a capacitance and two line
Emulation bus processed is connected.
2. the full duplex intercom system according to claim 1 applied to rail traffic emulation bus, it is characterised in that：Institute
It includes the superposition of 24V level and 24V level detections to state instruction transceiver module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711323126.2A CN108566268A (en) | 2017-12-13 | 2017-12-13 | Full duplex intercom system applied to rail traffic emulation bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711323126.2A CN108566268A (en) | 2017-12-13 | 2017-12-13 | Full duplex intercom system applied to rail traffic emulation bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108566268A true CN108566268A (en) | 2018-09-21 |
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ID=63530205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711323126.2A Pending CN108566268A (en) | 2017-12-13 | 2017-12-13 | Full duplex intercom system applied to rail traffic emulation bus |
Country Status (1)
| Country | Link |
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| CN (1) | CN108566268A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115953931A (en) * | 2023-03-14 | 2023-04-11 | 成都运达科技股份有限公司 | Rail transit practical training examination objective evaluation system and method |
Citations (6)
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| CN103400503A (en) * | 2013-08-26 | 2013-11-20 | 西华大学 | Multiphase traffic signal control machine based on IIC (Intel Integrate Circuit) bus |
| CN105071886A (en) * | 2015-08-24 | 2015-11-18 | 苏州华启智能科技有限公司 | Audio bus multiplexing system of vehicle-mounted broadcast system |
| CN105245302A (en) * | 2015-09-21 | 2016-01-13 | 深圳市航盛电子股份有限公司 | Multifunctional telephone broadcast system for train |
| CN106792352A (en) * | 2016-12-22 | 2017-05-31 | 苏州华启智能科技有限公司 | Anti-side-tone circuit and apply its two-wire full duplex talkback unit |
| CN107333089A (en) * | 2017-08-23 | 2017-11-07 | 许月发 | A kind of two-wire system pure digi-tal building safety-protection system |
-
2017
- 2017-12-13 CN CN201711323126.2A patent/CN108566268A/en active Pending
Patent Citations (6)
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| CN102355507A (en) * | 2011-09-29 | 2012-02-15 | 南京国电南自轨道交通工程有限公司 | Novel serial communication interface with functions of self-detection and conflict detection |
| CN103400503A (en) * | 2013-08-26 | 2013-11-20 | 西华大学 | Multiphase traffic signal control machine based on IIC (Intel Integrate Circuit) bus |
| CN105071886A (en) * | 2015-08-24 | 2015-11-18 | 苏州华启智能科技有限公司 | Audio bus multiplexing system of vehicle-mounted broadcast system |
| CN105245302A (en) * | 2015-09-21 | 2016-01-13 | 深圳市航盛电子股份有限公司 | Multifunctional telephone broadcast system for train |
| CN106792352A (en) * | 2016-12-22 | 2017-05-31 | 苏州华启智能科技有限公司 | Anti-side-tone circuit and apply its two-wire full duplex talkback unit |
| CN107333089A (en) * | 2017-08-23 | 2017-11-07 | 许月发 | A kind of two-wire system pure digi-tal building safety-protection system |
Non-Patent Citations (1)
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| 李新玲: "医用局域传呼对讲系统的设计", 《中国优秀硕士学位论文全文数据库信息科技辑I136-315》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115953931A (en) * | 2023-03-14 | 2023-04-11 | 成都运达科技股份有限公司 | Rail transit practical training examination objective evaluation system and method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180921 |