Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Integrated digital power amplifier

A digital power and amplifier technology, which is applied in the field of rail transit technology broadcasting, can solve problems such as recording at the output end, and achieve the effects of saving costs, reducing equipment weight, and increasing the space inside the equipment

Inactive Publication Date: 2021-02-19
BEIJING URBAN CONSTR DESIGN & DEV GRP CO
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The monitoring and recording of the power amplifier in the prior art is the data collected from the input end, not the recording of the output end

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Integrated digital power amplifier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0029]Such asfigure 1As shown, the integrated digital power amplifier of this embodiment is composed of a power supply module, a main control board, a power amplifier board and a liquid crystal screen.

[0030]Among them, the motherboard includes:

[0031](1) Fire emergency input and output interface: This equipment has an interface with the fire control host, which can directly realize the linkage with the fire controller. And reply status signal.

[0032](2) RS485 interface: With RS485485 communication interface, the device can still communicate through RS485 when the network is disconnected, and realize functions such as district broadcast.

[0033](3) USB interface: It can connect storage devices such as U disks, card readers, etc. through the USB interface, and play the stored audio.

[0034](4) SD card interface: SD card can be inserted, SD card can be used to store pre-recorded audio and local recording data.

[0035](5) UART interface: used to communicate with a 3.2-inch serial screen, real-t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an integrated digital power amplifier. The invention comprises a main control board, a power amplifier module, a loudspeaker interface board and the like, the main control board is provided with a processing module and a fire emergency input and output interface, the processing module is connected with an audio module, and the audio module is connected with a loudspeaker interface board through the power amplifier module; and the main control board can be directly linked with the fire controller through the fire emergency input / output interface. Therefore, the invention has the following advantages: 1, the digital input / output interface for fire fighting is provided, and the linkage control of fire fighting can be directly realized; 2, the monitoring function is that audio data is directly collected from the loudspeaker interface for monitoring, so that the audio output state is reflected more truly; 3, no annular transformer is used for output, the power amplifier module directly outputs 100V, the loudspeaker can be directly driven, the annular transformer is not needed for boosting, the space in the equipment is increased, the weight of the equipment is reduced, and the cost is saved.

Description

Technical field[0001]The invention relates to a power amplifier, which belongs to the field of railway transportation technology broadcasting, in particular to an integrated digital power amplifier.Background technique[0002]The public address system provides background music or broadcast programs for urban rail transit, airports, hotels, etc. At the same time, the public address system also has emergency broadcast functions.[0003]The basic function of the audio power amplifier is to amplify the audio signal sent from the front stage without distortion, and output enough power to drive the load (speaker) to make a beautiful sound. Amplifiers generally include two parts: pre-amplification and power amplification. The former is used to amplify the signal amplitude, also known as voltage amplifier, and the latter is used to amplify the signal power to make it sufficient to drive the speaker system.[0004]The broadcasting system usually consists of three parts: audio source, audio amplifi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H03F3/24H03F3/183H03F3/217H03F1/32H03F1/52
CPCH03F1/32H03F1/52H03F3/183H03F3/245
Inventor 李金龙冯东亮张宇孟红波
Owner BEIJING URBAN CONSTR DESIGN & DEV GRP CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com