一、研制噪声自动监测系统的意义目前,国内城市环境噪声的监测已成惯例,一般都得定期进行.国家已制定了城区环境噪声测试规范.在通常情况下,一个城市的环境噪声测点均在100个以上,有些甚至达数百个,用声级计进行噪声监测,不仅工作量很大且测试精度也较差.通常的环境噪声监测均使用模拟式声级计,这就需要一个人操作和读数,一个人做记录.由于声级计表头多为指针式,在噪声瞬息变化时,指针左右摆动,有时可有几十dB的变化范围,使得操作人员来不及换档,或者丢失数据,或者产生很大的读数误差.不同的操作人员在同时同地测试,也可能产生较大的差 First, the significance of the development of automatic noise monitoring system At present, the monitoring of domestic urban environmental noise has become a practice, generally have to be carried out regularly.Country has developed a test code for urban ambient noise.Under normal circumstances, a city of environmental noise measurement points are In more than 100, some even up to hundreds, the use of sound level meter for noise monitoring, not only the workload and test accuracy is also poor. The usual environmental noise monitoring using analog sound level meter, which requires a person Operation and reading, a person to do the record Because the sound level meter header pointer mostly in the noise transient changes, the pointer swinging around, and sometimes dozens of dB range, making the operator too late to shift, or lose data , Or produce a large reading error.Different operators in the same test at the same time, may also have a greater difference