Room environment power monitoring network audio intercom solution

Room environment power monitoring network audio intercom solution

First, the background of the centralized monitoring system for power environment

With the rapid development of the communications industry, the competition between communications companies has been intensifying. "Network quality is the lifeline of communications companies." Leading network quality is the absolute competitive advantage of communications companies. The stable power equipment and excellent room environment are the guarantee of network quality. Leading conditions. In order to improve the operational quality assurance ability and the operation and maintenance management of low-cost operation capability, the communication company must build a centralized monitoring system for power environment.

Second, the function of the centralized monitoring system of the power environment

The centralized monitoring system for power environment is used for telemetering, remote sensing, and remote control of various parameters, images, sounds, etc. of switching power supplies, air conditioners, oil machines, batteries, high and low voltage power distribution, and other equipment and environments of distributed communication bureaus (stations). Real-time monitoring of its operating parameters, diagnosis and processing of faults, recording and analysis of relevant data, so as to achieve the purpose of a small or unattended communications bureau (station), and centralized monitoring of equipment, centralized maintenance and centralized management.

Third, the introduction of network audio transmission module and network paging microphone and its application in the system

1, E702T network audio transmission control module

E702T is an ARM+DSP architecture that focuses on the control module of network audio transmission. It has a 10/100M Ethernet interface and can perform one-way MP3 audio streaming and two-way voice transmission over the network. E702T can be directly connected with an external audio power amplifier to form a network audio broadcast terminal. Can also directly access the microphone, the use of the machine's 2W audio power amplifier, constitute the intercom terminal.

E702T provides one UART for user interface, two universal UARTs, one SPI expansion interface, one relay output and one IO input interface.

For user convenience and secondary development, we provide a dynamic library under Windows. The dynamic library integrates Socket communication, audio compression and decoding, and threads to provide users with a simple and easy to use interface.

The main function:

1. Transparent transmission of serial port signals and network signals

2, network transmission audio signal, can talk or broadcast

Features

· Power input +5V DC, 300mA;

· 10/100M Base Ethernet interface;

· Voice MIC input;

Audio Line in line input;

· Stereo Line Out line output;

· 2W audio amplifier output, connected to 4 ~ 8 Ω speaker;

· Power amplifier control input and output (level input and relay output, mute output, power off output);

· One-way control serial port (through the serial port command to interact with E702T);

Two-way expansion serial port, the speed is as high as 3.125Mbps, can offer the user apparatus to carry on the network communication, also can connect the peripheral device such as camera module of the camera;

· All the way to expand the SPI interface, the rate up to 12M;

· Provide NAManager general parameter configuration file;

· Provide a secondary development dynamic library dedicated to MP3 playback and intercom;

· With remote firmware upgrade;

2. NM801-T Network Paging Microphone

The NM801-T network paging microphone is an ARM+DSP architecture that is specially designed for network broadcasting and network intercom. It has a 10/100M Ethernet interface and can perform one-way MP3 audio streaming and two-way voice transmission over the network. NM801-T comes with a high-performance microphone, built-in 2W audio power amplifier and matching speakers. The NM801-T can be used directly with our audio terminals and voice modules.

For user convenience and secondary development, we provide a dynamic library under Windows. The dynamic library integrates Socket communication, audio compression and decoding, and threads to provide users with a simple and easy to use interface.

Features

· Broadcast, multicast, intercom function;

· LCD Chinese display, plus 21 mechanical buttons, the operation is very convenient;

· Broadcast, multicast, intercom function;

· Power input +12V DC, 1000mA;

· 10/100M Base Ethernet interface;

· 2W audio amplifier output, connected with high performance speakers;

· Extended audio Line in line input;

· Extended RS485 serial port can be connected to other peripherals;

· Provide NAManager general parameter configuration file;

· Provide a secondary development dynamic library dedicated to MP3 playback and intercom;

· With remote firmware upgrade;

3, the application in the system

In most cases, the engine room environment power monitoring system will use a monitoring host or a serial server. If it is the former, it can generally achieve the effect of linkage, and the serial server will be related to the smoke, flooding, temperature and humidity sensors, etc. Relevant information is transparently transmitted to the monitoring center and judged by the host computer software.

The network audio transmission module provided by our company, with a serial port interface, can facilitate the transparent transmission of data and act as a serial server. In addition, audio signals can be transmitted over Ethernet for broadcast, multicast, unicast, and talkback. Transparent transmission of data and audio transmission can be paralleled. The actual application topology is as follows: In this way, data such as smoke, flooding, and temperature and humidity sensors can be uploaded, and the monitoring center can perform intercom command operations on the following sub-sites through the network paging microphone to facilitate intelligent remote management. . If you want to play background music, you can also add a free installation of digital audio broadcasting system software through the monitoring center PC to achieve free programming. In addition, we also provide secondary development packages for PC software to facilitate integration and application expansion.