智能化多功能声级计

Intelligence multi─function Decibed─meter

本文介绍了以MCS51为核心组成的声级计基本原理，并详细介绍了计权网络、倍频程滤波、有效值变换、数据采集等电路以及系统软件设计。本仪器测量精度高，测量范围宽，抗干扰性好，一机多用。

This paper introduces the principle of decibed─meter which takes MCS─51 single─chip computeras key, gives a minute description for circults of weighted network, multiplier frequency filter effcetive valuealtecenate data acquistion and system software design. Surveying accuracy of the meter is high. surveyingrange is wide and anti─distur bance is effiient and reliable.