1. System Overview According to the customer's requirements for the construction of the plant broadcasting system, we decided to select the wireless broadcasting of Haite Weiye Factory. The system uses VC software programming, single-chip microcomputer, RDS code control, solid-state transmitter technology, crystal frequency stabilization technology and other domestic and foreign advanced Technology, with the characteristics of "digital sound source, automatic playback, intelligent control, wireless transmission, addressing control" and so on, is a domestic first-class factory broadcasting system solution. Quadruple Rotors Watch Winder has a built-in smart timer that will wind then rest and repeat the cycle in either clockwise, counter clockwise or bi-directional directions. Quadruple rotors watch winder can hold a wide variety of wrist sizes, increased interior space to accommodate large size watches, microfiber cleaning cloth, microfiber protective storage bag, and a matte black storage box. The watch winder will not only wind your automatic watches but also store it as well. Each watch winder is hand made and developed to wind all popular brands of time pieces. This watch winder use Japanese Mabuchi Motor to work, it's very quiet, even if you're sleeping, leaving it in your bedroom won't wake you up. All the above are the characteristics of our watch Quadruple Rotors Watch Winder 4 Watch Winder,Mechanical Watch Winder,Rapport Watch Winder,Rotating Watch Case GUANGZHOU T.WING-PAK MFG.CO.,LTD , https://www.watch-winder-factory.com
Second, the factory wireless broadcast function features: Diversified program playback: The factory wireless intelligent broadcast system is compatible with various program playback devices such as DVD, MIDI, computer, radio, phonograph, etc., to meet the current multi-format audio playback.
Scheduled automatic play: Supports playing tracks to schedule play arrangement in weekly units. The system can automatically play tracks on time according to the arrangement program and automatically manage the state of the playback terminal.
Intelligent management and control: The system organically integrates computer control technology, single-chip technology, software programming technology, etc., fully realizing the autonomy of playback, peripherals and terminal management, saving manpower and material resources.
Wireless FM transmission: Adopt the FM carrier to modulate the audio and control signals, and carry the audio and control signals on an FM high-frequency carrier, greatly improving the utilization rate of transmission resources.
Addressing control broadcasting: The factory's wireless intelligent broadcasting system has the addressing broadcasting function, which can automatically or manually control the receiving status of each FM column through software. You can also arrange the receiving terminals randomly and play them automatically or manually through software control.
Collective unified broadcasting: The system can perform unified collective broadcasting according to the needs of the factory, and all speakers play the same program.
Emergency instant broadcast: In an emergency, the function of evacuation of any combination of emergency broadcasts to employees can enable the factory to protect the safety of tourists to the greatest extent when it encounters emergencies.
Multiple listening methods: The system supports multiple answering methods. You can listen directly with FM speakers, or demodulate the signal through the FM converter and then amplify the power with ceiling speakers, wall speakers, outdoor column or modeling speakers.
The terminal can be expanded at will: there are two requirements for the receiving terminal to play the track normally, one is to have the system power supply requirement, and the other is to have the signal receiving field strength requirement. Therefore, the extension terminal does not need to re-lay cables or replace the power amplifier, and it can be arbitrarily connected from the coaxial network on the basis of meeting the field strength requirements.
Third, the factory wireless broadcast program design
3.1 Audio source design is mainly composed of audio source (analog audio source from the digital audio source output from the playback host, radio head, microphone, etc.), mixer (audio signal switching device), intelligent broadcast host (emitting digital audio source and control signal), broadcast transmitter (Broadcast and control modulation transmission equipment) and other components.
3.2 Broadcasting control design Combining the coding control board and the computer, the entire broadcasting system is controlled intelligently and automatically. With coded remote control, you can freely control the broadcast of a certain point or area on the interface, or you can manually control it.
3.3 Transmission design Composed of a transmitting antenna and a feeder, the audio and control signals are first modulated onto the FM FM carrier and SCA subcarrier, and then transmitted into the air.
3.4 Reception design Considering that there is machine noise in the factory, the intelligent FM column is used for listening in the factory and outdoors.
3.5 System schematic