英语翻译摘 要目前在国内由于瓦斯泄漏,引起中毒、爆炸时有发生,直接威胁着人民的生命和国家财产安全.因此防悲剧于未然的必要

英语翻译
摘 要
目前在国内由于瓦斯泄漏,引起中毒、爆炸时有发生,直接威胁着人民的生命和国家财产安全.因此防悲剧于未然的必要性就变得十分的重要.而利用瓦斯监控报警器,就可以很好的预防瓦斯爆炸事故的发生,一旦利用瓦斯监控报警器监控到瓦斯浓度超标,其利用铃音和灯光变化来报警,最大的好处是明显,传播范围大.与此同时启动风扇系统进行排风,降低瓦斯浓度.但是随着科学技术的发展,目前部分瓦斯监控报警器报警临界值的精度以及稳定性已经跟不上时代的要求.研制出新的瓦斯监控报警器更加显的重要.而本设计采取模块化设计方案,硬件电路设计合理、结构简单,设计以AT89S52单片机为核心,因此在系统执行的开始和过程中大大增加了其使用领域.此外,系统采用数字量传输,抗干扰性强、工作稳定可靠,操作及维护更加方便.并且系统具有成本低、技术成熟、功能完善、实时性高并且同时示警等优点.设计整体结构简单、容易实现、实用方便,符合安全系统的设计要求.
关键词：报警临界值；瓦斯浓度；AT89S52；数字量传输

In china,the poisoning and explosion caused by the leak of gas start from time to time,which threaten people's lives and the security of national property directly.Therefore,to nip it in bud is very important.The use of agent mointor alarm can prevent the occurance of such gas accident perfectly.Once the agent alarm detects the gas concentration has run out of normal,it will give give an alarm with sound and light.The biggest advantage is distinctness,which can spread widely.At the same time,the fan will be started to discharge air so as to reduce the gas concentration.
However,with the development of science and technology,the accurance and solidarity of the some gas alarm agent's critical value cannot meet the requirment of the time.In such case,the design of new gas alarm agent becomes more important.
The design of our project has applied modular design and have simple constructions ,with a proper design of hardware.As the design is using AT89S52 Single-chip as core component,it can be applied to many fields during the operation of system.Apart from that,by the use of digital transmission,the system enjoys a strong interference immunity and a stable working ability,which makes the operation and manitenance of system more convenient.More still,the system has the advantage of low costing,mature thecnology,perfect function,high real-time and alarming.The design is simple and easy to ust on the whole,up to the requirment of security system.
Key Word:alarming critical value; gas concentration ; AT89S52; digital transmission