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    • 3. 发明授权
    • Fire alarm system
    • 火警系统
    • US4803469A
    • 1989-02-07
    • US884976
    • 1986-07-14
    • Eiji Matsushita
    • Eiji Matsushita
    • G08B17/00G08B17/06
    • G08B17/00
    • A fire alarm system which comprises one or more detecting sections for detecting a change in the surrounding phenomena due to a fire in an analog form; a storing section for storing the analog data output from the detecting section or sections; a level comparing section for comparing a data level represented by present instantaneous analog data output from the detecting section or sections and a predetermined level; fire judging instructing section which extracts a plurality of data stored during a predetermined period of time back to from the time when a comparison signal is obtained from the level comparing section, calculates a change amount between the respective extracted data and generates an output for initiating the calculation when the number of the calculated change amounts exceeding a predetermined amount exceeds a predetermined number; and a fire judging section for receiving the data stored in the storing section in response to the signal from the comparing section and/or fire judging instructing section to judge a fire.
    • 一种火灾报警系统,包括一个或多个检测部分,用于检测由于模拟形式的火灾引起的周围现象的变化; 存储部分,用于存储从检测部分输出的模拟数据; 电平比较部分,用于比较从检测部分或部分输出的当前瞬时模拟数据表示的数据电平与预定电平; 火焰判断指示部分,从电平比较部分获得比较信号的时间之后提取在预定时间段内存储的多个数据,计算各提取数据之间的变化量,并产生用于启动 当计算出的改变量超过预定量的数量超过预定数量时的计算; 以及火焰判断部分,用于响应于来自比较部分和/或火焰判断指示部分的信号接收存储在存储部分中的数据,以判断火灾。
    • 4. 发明授权
    • Fire alarm system
    • 火警系统
    • US4884222A
    • 1989-11-28
    • US760312
    • 1985-07-29
    • Tetsuya NagashimaEiji MatsushitaSadataka YuchiAkira Kitajima
    • Tetsuya NagashimaEiji MatsushitaSadataka YuchiAkira Kitajima
    • G08B17/00G08B29/18
    • G08B29/183G08B17/00
    • A fire alarm system of the present invention is adapted to compute an approximation equation based on the detection data from a detector or detectors such about a smoke density, a temperature, a gas concentration, etc. and predictively determine a fire based on the approximation equation. The system including computing section for computing an approximation equation approximating a change in the physical phenomenon related to the occurrence of a fire which is output from the detector or detectors, sequentially sampled and stored and for computing a future value of the phenomenon estimated from the approximation by using a predetermined number of the data stored in a storing section. The future vale is compared with a data value preliminarily set in association with the fire alarming and an alarm is generated when the relation therebetween is not within a predetermined range.
    • 本发明的火灾报警系统适用于根据来自检测器或检测器的检测数据计算近似方程,例如烟密度,温度,气体浓度等,并根据近似方程式预测火灾 。 该系统包括用于计算逼近近似方程的计算部分,其近似来自从依次采样和存储的检测器或检测器输出的火灾发生相关的物理现象的变化,并用于计算从近似估计的现象的未来值 通过使用存储在存储部分中的预定数量的数据。 将未来值与与火灾报警相关联地预先设定的数据值进行比较,并且当它们之间的关系不在预定范围内时产生报警。