摘要
针对煤矿井下噪声的危害,提出了一种基于STC单片机的井下噪声测量仪的设计方案,介绍了该测量仪的硬件和软件设计。测试结果表明,该测量仪实现了噪声声级的准确测量,测定误差小于±1.25%,达到了2级声级计指标要求。
In view of noise hazard of coal mine underground,the paper proposed a design scheme of noise measuring instrument based on STC single-chip microcomputer,and introduced hardware and software design of the instrument.The test results showed that the instrument realizes accurate measurement of noise level,measurement error is less than ±1.25%,which reaches 2-level of sound level meter.
出处
《工矿自动化》
2011年第12期71-73,共3页
Journal Of Mine Automation
关键词
煤矿井下
噪声测量仪
声压级
传声器
计权电路
STC单片机
coal mine underground
noise measuring instrument
sound pressure level
microphone
weighting circuit
STC single-chip microcomputer
