Mine Explosion-proof And Intrinsically Safe Type Sound And Light Signal Alarm System Master Key Technology Research And Design

For a long time, coal is a labor-intensive industry with low technology and low requirement inpeople’s minds, combined with the natural occurrence conditions of China’s coal is complex, sothere are many factors affecting coal mine production safety. At present, China is in the period ofrapid economic growth, the development of the coal industry has put forward to a higherrequirement. Therefore, we must improve production safety, to ensure that the development of thecoal industry is sustained, stable and healthy, developing and applying the latest technology incoal production, to minimize casualties.This article from the perspective of practical application, against the throttle for underground Lane,Lane roadway locomotive throttle at the corner of peace and other dangerous places warningdevice for a research and design, when a staff member into the danger zone, the system sendsspecific audio dual sound and light warning signal, it can effectively prompt attention to safety ofworkers in the region, reducing the likelihood of accidents. The content from the realizationprinciple, the hardware design, software design and application of the technical aspects of security,discusses the main control system design and implementation of the whole process, the paperfocuses on the PWM voice technology, the intrinsically safe circuit design, modbuscommunication technology and several other key technologies based on the STC12MCU. Finally,develop a prototype system host board and test its performance-related parameters.The design of this system has the following advantages：correct principle, reasonable structure,safe and reliable operation, and also has its own communication, it can implementate the remotemonitoring, remote command and control and other extensions facilitatly, so it has a goodpromotion prospects.