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A real-time multifunctional codec for 450m locomotive radio unit

A codec and codec technology, applied in the field of real-time multi-function codecs, can solve the problems of multiple manpower time costs, rising hardware costs, adding multiple adjustable resistors, etc., and achieve flexible signal processing, simple structure, and reduced The effect of hardware cost and labor cost

Active Publication Date: 2022-01-14
SHENZHEN CHANGLONG RAILWAY ELECTRONICS ENGCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method increases the hardware cost at the cost of adding multiple adjustable resistors, and takes up space on the PCB board, increasing the difficulty of circuit board layout; moreover, manual fine-tuning of the adjustable resistors will require more manpower and time costs, Increased the production cycle of 450MHz communication modules

Method used

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  • A real-time multifunctional codec for 450m locomotive radio unit
  • A real-time multifunctional codec for 450m locomotive radio unit
  • A real-time multifunctional codec for 450m locomotive radio unit

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Embodiment Construction

[0026]The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some key embodiments of the present invention, rather than all the embodiments.

[0027] The core components of the 450MHz unit real-time multi-function codec shown below are the minimum core board, peripheral circuit modules and codec software.

[0028] like figure 2 As shown, the Ethernet driver of the embedded Linux minimum system and the Ethernet network transformer provide a complete Ethernet transmission function, and the download and debugging of the program are carried out through the Ethernet. figure 2 The CAN driver and the CAN bus isolation circuit of the embedded Linux minimum system in the embedded system provide the basic Socket CAN programming interface, using the Socket CAN programming interface and figure 1 The CAN network protocol stack in the locomotive, the MMI and other units of the locom...

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Abstract

The invention discloses a real-time multifunctional codec for a 450M locomotive radio unit, which includes an embedded Linux minimum system, related peripheral hardware and an application layer codec software module, the software module includes a voice codec module, a dispatch command data codec Decoding module, audio sub-audio codec module, CAN bus protocol stack and codec parameter adjustment module; voice codec module is responsible for the conversion between voice signals and digital signals within the hearing range, and real-time transmission; scheduling command data codec The module is responsible for the encoding and decoding of railway data signals, and the audio and sub-audio encoding and decoding module is responsible for the signaling encoding and decoding of button calls or incoming calls; the railway voice communication service is completed by the voice encoding and decoding module and the audio and sub-audio encoding and decoding module, and the data communication service is provided by the dispatcher The command data encoding and decoding module is completed. The invention realizes the codec function through software, has flexible signal processing, simple structure, and reduces hardware cost and labor cost.

Description

[Technical field] [0001] The invention relates to a locomotive integrated wireless communication device, in particular to a real-time multifunctional codec of a 450M locomotive radio unit. [Background technique] [0002] With the rapid development of my country's railway industry, the locomotive integrated wireless communication equipment used on freight cars or ordinary passenger cars has also experienced the first and second generation, the new generation of locomotive wireless integrated communication equipment (CIR3.0) related standards and tests In progress. The core of integrated wireless communication equipment for locomotives is to use mature radio technology in railway services, which are divided into voice services and data services. Railway voice services include train scheduling, yard shunting, voice calls, etc., while data services include scheduling commands, train number calibration, and train protection alarms. In the next few years, the second-generation lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L19/008H04L1/00
CPCG10L19/008H04L1/0061
Inventor 黄小兵张州平薛保建马艳霞王勇赵轶骢李宗靖房甜甜罗勇何德喜
Owner SHENZHEN CHANGLONG RAILWAY ELECTRONICS ENGCO