Abstract
Carbon monoxide is a colorless, tasteless, highly toxic gas. In the coal mine, since the coal produced in low-temperature oxidation stage of carbon monoxide, carbon monoxide is early to expose the fire-sensitive indicators. Mine in the coal face to the wind Road, fully mechanized coal entry, such as digging a spontaneous combustion of carbon monoxide detector locations, the spontaneous combustion of coal a prediction. Timely and accurate determination of carbon monoxide in the mine gas concentration on human health and production safety have is of important significance.
Carbon monoxide gas detection means a lot, in the wider application of the thermal catalytic detection method. However, due to a variety of flammable gas can be catalyzed oxidation combustion, resulting in decreased accuracy of detection. In addition, the use of this type of detector are larger in size and power, not easy to carry. The subject of design MSP430 MCU control of the portable carbon monoxide detector will be the concentration of carbon monoxide in the air and converted to electrical signals, then the AD converter, the analog signal to digital signals, processed by the microprocessor, with 4 LED digital display of the concentration of value. When the concentration of carbon monoxide in the air after a sound and light gauge alarm function. The issue of the SCM control of the design of portable carbon monoxide detector with power monitoring function, real-time monitoring instrument within the power, when the supply voltage below the threshold when the alarm to remind the use of staff time to replace batteries, and there are external reset button, but system Safe and reliable. This issue designed by carbon monoxide detector, portable against the characteristics of the internal use of the entire chip-chip package, small size, low power consumption, accurate measurement of the police, to facilitate the carrying of staff, particularly in the flow of underground mine Staff carry.
