煤炭工程 ›› 2016, Vol. 48 ›› Issue (1): 139-141.doi: 10.11799/ce201601040
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刘修振
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摘要: 基于红外检测原理,以MSP430F1611单片机为核心设计了一种红外甲烷传感器。为了提高红外光的稳定性和对电路提供过压保护,设计了光源稳压驱动电路;经过硬件滤波之后,采集信号中仍然有噪声干扰,随后使用FIR滤波器,对经过硬件滤波后的信号进行数字滤波处理;实验室条件下,利用该传感器测量标准甲烷气体,实测结果表明该传感器的精度适合于煤矿行业的甲烷检测。
关键词: MSP430F1611单片机, 红外甲烷传感器, 过压保护, FIR滤波器, 数字滤波
Abstract: Based on the principle of infrared detection, MSP430F1611 was taked as the core to design a kind of infrared methane sensor. In order to improve the stability of infrared light and provide circuit over-voltage protection, voltage driving circuit was designed; Through the hardware filter circuit, signal acquisition still contained noise, and then , the signal after the hardware filtering , was filtered digitally using FIR filter; In the laboratory , the sensor was used to test standard methane gas ,and the measurement results show that the precision of the sensor is suitable for methane detection in coal industry.
中图分类号:
TD712+.55
刘修振,梁永直. 矿用红外甲烷传感器的研究[J]. 煤炭工程, 2016, 48(1): 139-141.
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