【 Weak current College 】 wireless intelligent broadcasting system introduction---Power By 【 China power house network 】

Broadcast by radio waves or wire transfer voice, images have many features of a modern communication tool. From the media, radio is divided into two broad categories: ① through radio waves transmitted programs, known as radio broadcasting; ② through wire transfer programs, known as cable. Here's a simple as wireless broadcast a overview:
From a functional standpoint, wireless intelligent broadcasting by the audio portion, control part, launching and receiving part of the four modules, the following on each unit of functionality and structure of the brief analysis.
1. Audio section: a wireless smart radio play audio program source provided is generally to adapt to different media, different format audio playback select the analog and digital audio sources mixed mode. Analog audio source refers to a DVD, deck, digital tuner, MP3 players, digital audio sources means digital smart Studio host broadcast stored on their hard disk digital audio format. Both analog and digital audio mixing console, on the sound input for decoration, tuning, mix output to launch.
2. the control section: a wireless smart radio and core technology components, from a practical perspective, divided into master control section and receive terminal intelligent control section. Master control section means through the intelligent broadcasting software can implement digital smart Studio host daily automatic switch, according to the broadcasting needed in weeks set timed playlist to make wireless smart radio system to be able to follow the person's layout design to automate broadcast task, automatically open and close the external audio device power. Receiving terminal intelligent control part means wireless intelligent broadcasting system receiving equipment such as: indoor FM sound, outdoor FM sound columns, FM receiving amplifiers, versatile FM receiver controller and attached pressure amplifier, to follow the scheduled playlist smart opened and closed, need not be full-time operation, to achieve a single point, grouping, or harmonization of timing addressed broadcasting.
3. emission parts: the audio and control signals to the FM band (70-87MHz, 88-108MHz) and incentive zoom into electromagnetic signal emission into the air. Mainly by the FM radio transmitter, antenna and feeder lines, lightning protection system. Intelligent encoding controller consists of two roles: first, connect the audio signal modulated to 70-87MHz/88-108MHzFM FM carrier; the second is a digital smart Studio host output RS-232 control signal modulation to the audio of the modulation frequency SCA subcarrier, output to the FM transmitter. FM transmitter to your audio and control signals to synchronize high-frequency current incentive amplified output through the feeder to transmitting antenna change contract varying electromagnetic field, through the air on the broadcast signal and control signal directional/Omni-directional override to be receiving area.
4. the receiving section: a wireless smart radio play part of Terminal, implementation as frequency modulation, frequency modulation transfer directly receive constant pressure receiving, FM go fixed resistance receiving three modes. FM direct reception means indoors occasions with indoor play FM speakers receive. FM to constant pressure from the two ways, one is the FM reception of your machine, and output pressure power signal, the output to the ceiling loudspeaker, wall mount loudspeakers, waterproof allweather or lawn speaker listening; second is a multifunctional controller receives FM receiver output audio to a fixed-voltage power amplifier, then output signal to the ceiling loudspeaker, wall mount loudspeakers, waterproof allweather or lawn speaker listening, multifunctional FM receiver controller can be timed playlist automatically control the constant pressure amplifier power, but also people-open pressure amplifier power for second-level audio signal broadcast spots. FM go fixed resistance which is mainly used in rural radio, FM receiving amplifier receives wireless intelligent broadcast signal, the output to the Horn loudspeaker/loudspeaker to listen to.
As wireless smart radio technology matures, function of increasingly powerful, has been used campus, countryside, Park, community, factories, emergency, scenic, and other places.