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    Photoelectric smoke detector and disaster monitoring system using the photoelectric smoke detector
    1.
    发明公开
    Photoelectric smoke detector and disaster monitoring system using the photoelectric smoke detector 失效
    Fotoelektrischer Rauchgasdetektor und System zur Katastrophenverhinderung，das diesen Detektor benutzt

    公开(公告)号：EP0755037A1

    公开(公告)日：1997-01-22

    申请号：EP96810470.3

    申请日：1996-07-18

    申请人： HOCHIKI Kabushiki Kaisha

    发明人： Nagashima, Tetsuya ,  Kosugi, Naoki ,  Ohmori, Yoshiki

    IPC分类号： G08B17/103 ,  G08B29/14

    CPC分类号： G08B29/145

    摘要： The analog smoke detector (3a) includes a transmission/reception circuit (31) for receiving an A/D conversion command from a control panel through a transmission path (8). It is composed of a light emitting element (38a), a test light emitting element (38b), a light receiving element (39), a light emitting element drive circuit (36), an amplifying circuit of received light (40) and transistors (Q1, Q2, Q3). It is further provided with a MPU (32) which includes a CPU, a ROM storing determination levels, a working RAM and the like An EEPROM (33) is externally connected to the MPU (32).
    It includes a light emitting element control circuit (36) for outputting a drive pulse based on the light emission control pulses P1, P2 output from the MPU (32) and the detecting light emitting element (38a) for emitting light for receiving dispersed light caused by smoke generated by a fire.

    摘要翻译： 模拟烟雾检测器（3a）包括用于通过传输路径（8）从控制面板接收A / D转换命令的发送/接收电路（31）。 它由发光元件（38a），测试发光元件（38b），光接收元件（39），发光元件驱动电路（36），接收光（40）和晶体管的放大电路 （Q1，Q2，Q3）。 还具备MPU（32），MPU（32）包括CPU，存储判定级别的ROM，工作RAM等。EEPROM（33）外部连接到MPU（32）。 它包括发光元件控制电路（36），用于基于从MPU（32）输出的发光控制脉冲P1，P2和用于发射用于接收分散光的光的检测发光元件（38a）输出驱动脉冲 被火生成的烟雾。