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    • 6. 发明授权
    • Smoke sensor
    • 烟雾传感器
    • US08638436B2
    • 2014-01-28
    • US13395626
    • 2009-09-15
    • Manabu Dohi
    • Manabu Dohi
    • G01N21/49G08B21/00
    • G08B17/107G01N21/53G01N2021/4707G01N2021/4709G08B17/113
    • [Problem to be Solved]To provide a smoke sensing system, a smoke sensor and a receiver that can accurately determine the type of smoke.[Solution]The smoke sensor includes: a light-projecting unit 13 for projecting detection light toward a monitored area; a first light-receiving unit 14a, a second light-receiving unit 14b and a third light-receiving unit 14c for receiving the detection light scattered by particles existing in the monitored area, the first light-receiving unit 14a, the second light-receiving unit 14b and the third light-receiving unit 14c being arranged such that the angle between the light-receiving axis of the first light-receiving unit 14a and the light-projecting axis of the light-projecting unit 13, the angle between the light-receiving axis of the second light-receiving unit 14b and the light-projecting axis of the light-projecting unit 13 and the angle between the light-receiving axis of the third light-receiving unit 14c and the light-projecting axis of the light-projecting unit 13 are different from one another; a smoke type determination unit 47 for determining the type of smoke generated in the monitored area based on the output values output from the first light-receiving unit 14a, the second light-receiving unit 14b and the third light-receiving unit 14c; and a fire determination unit 48 for determining whether or not a fire has occurred in the monitored area based on the output values output from the first light-receiving unit 14a, the second light-receiving unit 14b and the third light-receiving unit 14c.
    • [要解决的问题]提供可以准确确定烟雾类型的烟雾感测系统,烟雾传感器和接收器。 [解决方案]烟雾传感器包括:用于将检测光投射到被监视区域的投光单元13; 第一光接收单元14a,第二光接收单元14b和第三光接收单元14c,用于接收由监视区域中存在的颗粒散射的检测光,第一光接收单元14a,第二光接收 单元14b和第三光接收单元14c被布置成使得第一受光单元14a的受光轴线与投光单元13的光线轴之间的角度, 第二光接收单元14b的接收轴和投光单元13的发光轴以及第三光接收单元14c的受光轴与发光单元13的光线轴之间的角度。 突出单元13彼此不同; 烟雾类型确定单元47,用于基于从第一光接收单元14a,第二光接收单元14b和第三光接收单元14c输出的输出值来确定在监视区域中产生的烟雾的类型; 以及基于从第一光接收单元14a,第二光接收单元14b和第三光接收单元14c输出的输出值来确定监视区域中是否发生火灾的火灾判定单元48。
    • 7. 发明申请
    • SMOKE SENSOR
    • 烟雾传感器
    • US20120170035A1
    • 2012-07-05
    • US13395626
    • 2009-09-15
    • Manabu Dohi
    • Manabu Dohi
    • G01N21/49
    • G08B17/107G01N21/53G01N2021/4707G01N2021/4709G08B17/113
    • [Problem to be Solved]To provide a smoke sensing system, a smoke sensor and a receiver that can accurately determine the type of smoke.[Solution]The smoke sensor includes: a light-projecting unit 13 for projecting detection light toward a monitored area; a first light-receiving unit 14a, a second light-receiving unit 14b and a third light-receiving unit 14c for receiving the detection light scattered by particles existing in the monitored area, the first light-receiving unit 14a, the second light-receiving unit 14b and the third light-receiving unit 14c being arranged such that the angle between the light-receiving axis of the first light-receiving unit 14a and the light-projecting axis of the light-projecting unit 13, the angle between the light-receiving axis of the second light-receiving unit 14b and the light-projecting axis of the light-projecting unit 13 and the angle between the light-receiving axis of the third light-receiving unit 14c and the light-projecting axis of the light-projecting unit 13 are different from one another; a smoke type determination unit 47 for determining the type of smoke generated in the monitored area based on the output values output from the first light-receiving unit 14a, the second light-receiving unit 14b and the third light-receiving unit 14c; and a fire determination unit 48 for determining whether or not a fire has occurred in the monitored area based on the output values output from the first light-receiving unit 14a, the second light-receiving unit 14b and the third light-receiving unit 14c.
    • [要解决的问题]提供可以准确确定烟雾类型的烟雾感测系统,烟雾传感器和接收器。 [解决方案]烟雾传感器包括:用于将检测光投射到监视区域的投光单元13; 第一光接收单元14a,第二光接收单元14b和第三光接收单元14c,用于接收由监视区域中存在的颗粒散射的检测光,第一光接收单元14a,第二光接收 单元14b和第三光接收单元14c被布置成使得第一受光单元14a的受光轴线与投光单元13的光线轴之间的角度, 第二光接收单元14b的接收轴和投光单元13的发光轴以及第三光接收单元14c的受光轴与发光单元13的光线轴之间的角度。 突出单元13彼此不同; 烟雾类型确定单元47,用于基于从第一光接收单元14a,第二光接收单元14b和第三光接收单元14c输出的输出值来确定在监视区域中产生的烟雾的类型; 以及基于从第一光接收单元14a,第二光接收单元14b和第三光接收单元14c输出的输出值来确定监视区域中是否发生火灾的火灾判定单元48。