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    • 3. 发明授权
    • Ignition system with resistance value difference fire extinction
detection circuit
    • 点火系统具有电阻值差异灭火检测电路
    • US5804796A
    • 1998-09-08
    • US603241
    • 1996-02-20
    • Ichiro Kanesaka
    • Ichiro Kanesaka
    • F23N5/14F23Q7/12F23Q7/22F23N5/00
    • F23N5/143F23Q7/12
    • In an ignition system for sensing a change in a resistance value during a combustion of a heating resistive element and detecting a fire extinction, a resistance value of the heating resistive element is sensed by a resistance value detecting circuit at a predetermined time interval set by an interval setting circuit, and a difference between the resistance value and that sensed before an elapse of the predetermined period of time is calculated by a resistance value calculating circuit. A comparing circuit compares a difference in the resistance values with a reference value stored in a reference value memory, and a extinction detecting circuit detects a fire extinction when the difference calculated by the resistance value difference calculating circuit had exceeded the reference value. Accordingly, there is attained an ignition system which reasonably determines a fire extinction without an additional complex structure.
    • 在用于感测加热电阻元件的燃烧期间电阻值变化并检测灭火的点火系统中,加热电阻元件的电阻值由电阻值检测电路以由 间隔设定电路,并且通过电阻值计算电路计算电阻值与经过预定时间段之前所感测的电阻值之差。 比较电路将电阻值的差与存储在参考值存储器中的参考值进行比较,当由电阻值差计算电路计算出的差超过参考值时,消光检测电路检测灭火。 因此,获得了一种合理确定灭火而没有额外复杂结构的点火系统。