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    • 24. 发明授权
    • Fire discriminating apparatus
    • 火灾鉴别装置
    • US4922230A
    • 1990-05-01
    • US236503
    • 1988-08-25
    • Shigeru OhtaniYukio Yamauchi
    • Shigeru OhtaniYukio Yamauchi
    • G08B17/00G08B17/06
    • G08B17/06
    • A fire discriminating apparatus for determining whether there is the outbreak of fire in an area under surveillance in accordance with the temperature difference between a temperature detection value of the area and a reference temperature. The apparatus includes a temperature sensor for detecting an ambient temperature; sampling means for sampling the detected temperature of the temperature sensor at a given period, temperature difference detecting means for computing a temperature difference between the detected temperature and a reference temperature each time the detected temperature is sampled by the sampling means, fire discriminating means whereby when the temperature difference is greater than a predetermined threshold value the outbreak of a fire is determined and an alarm command signal is generated, and reference temperature correcting means whereby a correction value obtained by multiplying the temperature difference obtained upon each sampling by a given factor smaller than 1 is added to the reference temperature to correct the reference temperature for the detection of temperature difference during the next sampling.
    • 一种用于根据该区域的温度检测值和基准温度之间的温度差来确定在监视区域内是否发生火灾的火焰识别装置。 该装置包括用于检测环境温度的温度传感器; 采样装置,用于在给定时间段对所述温度传感器的检测温度进行采样;温度差检测装置,用于在每个检测温度由采样装置采样时计算检测温度与基准温度之间的温度差;火焰识别装置, 温度差大于预定阈值,确定火灾的爆发并产生报警命令信号;以及参考温度校正装置,由此通过将每次采样获得的温度差乘以一个给定因子小于 1加到参考温度以校正参考温度,以便在下次采样期间检测温差。