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    • 2. 发明授权
    • 일산화탄소 가스경보기
    • 一氧化碳气体检测仪
    • KR1019970005814B1
    • 1997-04-21
    • KR1019940038968
    • 1994-12-29
    • 주식회사 포스코재단법인 포항산업과학연구원
    • 신병철오동환윤용재김봉균
    • G08B21/00
    • A carbon monoxide gas alarm device controls a heating operation period of a semiconductor gas sensor by using an oscillator and a logic element, and performs an alarm operation according to a density of the predetermined gas. The alarm device includes: a power unit(1) having a charging circuit and a battery; a low voltage detector; an oscillator(2) for a sensor's heating operation; a detector(3) for controlling a sensor's heating period, and preventing a detection operation during the heating period; a high density comparator(5) for comparing the detection signal from the detector(3) with a predetermined voltage, and includes a comparator(IC5) and an oscillation circuit(IC8); a low density gas comparator(6) for comparing the detection signal from the detector(3) with a predetermined voltage, and includes comparators(IC6,IC7) and an oscillation circuit(IC9); and an alarm(6) for amplfifying an oscillation output of the comparators(4,5), and driving the speaker(SPK).
    • 一氧化碳气体报警装置通过使用振荡器和逻辑元件来控制半导体气体传感器的加热操作期间,并且根据预定气体的密度进行报警操作。 报警装置包括:具有充电电路和电池的功率单元(1); 低电压检测器; 用于传感器加热操作的振荡器(2); 用于控制传感器的加热周期的检测器(3),并且防止在加热期间的检测操作; 用于将来自检测器(3)的检测信号与预定电压进行比较的高密度比较器(5),并且包括比较器(IC5)和振荡电路(IC8); 用于将来自检测器(3)的检测信号与预定电压进行比较的低密度气体比较器(6),并且包括比较器(IC6,IC7)和振荡电路(IC9); 以及用于放大比较器(4,5)的振荡输出并且驱动扬声器(SPK)的报警器(6)。