Broadcasting system and power amplifier control board for rail transit
CN222509314UActive Publication Date: 2025-02-18SHENZHEN YINGLONG HUATONG TECH DEV CO LTD
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Patent Information
- Application Number
- CN202421205875.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-29
AI Technical Summary
Technical Problem
The existing rail transit broadcast system cannot work properly when the network is paralyzed, resulting in the interruption of the broadcast link.
Method used
A broadcast system for rail transit was designed, using a power amplifier control board, a power supply board and multiple power amplifier boards. Through the combination of CPU unit, FPGA unit and EMMC unit, it can automatically switch to locally stored audio signals in case of network failure. , continue to ensure the normal operation of the broadcast function.
Benefits of technology
In the event of a network failure, the system can automatically switch to the locally stored audio signal, ensuring the continuity and stability of the broadcast function and avoiding interruption of the broadcast link.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN222509314U_ABST
Abstract
The utility model provides a broadcasting system for rail transit and a power amplifier control board, a broadcasting server transmits digital audio signals to the power amplifier control board through a network, and the power amplifier control board processes the audio signals through an FPGA and transmits the audio signals to the power amplifier board through an audio bus. And the power amplifier board amplifies the audio signal and outputs the audio signal to the loudspeaker for playing. When a network fault occurs, the power amplifier control board is automatically switched to a locally stored audio signal (stored in the EMMC), and the audio signal is transmitted to the power amplifier board by using an analog audio transmission channel. And the power amplifier board continuously amplifies the audio signal to ensure normal operation of the broadcasting function.
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