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88 条记录 (耗时 0.011 秒)

    VERFAHREN ZUR BRANDERKENNUNG
    62.
    发明公开
    VERFAHREN ZUR BRANDERKENNUNG 有权
    法发现火灾

    公开(公告)号：EP1366477A1

    公开(公告)日：2003-12-03

    申请号：EP02706665.3

    申请日：2002-02-05

    申请人： ROBERT BOSCH GMBH

    发明人： PFEFFERSEDER, Anton ,  SIBER, Bernd ,  HENSEL, Andreas ,  OPPELT, Ulrich

    IPC分类号： G08B29/18 ,  G08B29/20

    CPC分类号： G08B29/188 ,  G08B29/20

    摘要： A method for fire recognition is disclosed, serving to avoid false alarms, in which an alarm threshold is determined depending upon signal parameters received from at least one sensor signal. False alarms can thus be advantageously filtered out. The above is further improved by the establishment of an alarm interval, for which the alarm threshold must be exceeded, in order for an alarm to be recognised. Said alarm interval can also be adapted according to signal parameters. An upper and lower limit are set for both alarm interval and alarm threshold, in order to incorporate a certain security, such that the alarm interval and alarm threshold do not adopt values which would put a functioning of the fire alarm at risk. Several sensor signals may be used, whereby the signal parameters are then generated by linking the sensor signals. A light-scattering smoke detector, fitted with a labyrinth and a detector chamber is preferably used.

    Smoke detecting apparatus for fire alarm
    65.
    发明公开
    Smoke detecting apparatus for fire alarm 失效
    Rauchdetektionsvorrichtungfüreinen Feueralarm。

    公开(公告)号：EP0580110A1

    公开(公告)日：1994-01-26

    申请号：EP93111565.3

    申请日：1993-07-19

    申请人： NOHMI BOSAI LTD.

    发明人： Mochizuki, Mikio, c/o Nohmi Bosai Ltd. ,  Ito, Hideo, c/o Nohmi Bosai Ltd. ,  Kobayashi, Ryousaku, c/o Nohmi Bosai Ltd. ,  Morita, Tadao, c/o Nohmi Bosai Ltd.

    IPC分类号： G08B29/20

    CPC分类号： G08B29/185 ,  G08B17/107

    摘要： A smoke detecting apparatus for fire alarm of the present invention has a smoke chamber into which smoke to be detected is introduced, a light emitting lamp (10) disposed in the smoke chamber, a light receiving element (20) disposed in the smoke chamber so as to receive the light emitted from the light emitting lamp, an A/D converting circuit (43) for converting the output signal from the light receiving element into a digital signal, a memory (61) for storing data therein, a computing device for storing ink said memory, as first calibration data, the output data from the A/D converting circuit when the smoke chamber is filled with a first reference gas, storing in said memory, as second calibration data, the output data from the A/D converting circuit when the smoke chamber is filled with a second reference gas, and computing a proper smoke density corresponding to the output data from the A/D converting circuit on the basis of the first and second calibration data and the output data from the A/D converter circuit, a display device for displaying the smoke density computed by the computing device.

    摘要翻译： 本发明的火灾报警器的烟雾检测装置具有引入烟雾的烟室，设置在烟室内的发光灯（10），设置在烟室内的光接收元件（20）， 为了接收从发光灯发出的光，将用于将来自光接收元件的输出信号转换为数字信号的A / D转换电路（43），用于存储数据的存储器（61），用于存储数据的计算装置 将所述存储器作为第一校准数据存储在当烟室充满第一参考气体时，来自A / D转换电路的输出数据，作为第二校准数据存储在所述存储器中，来自A / D的输出数据 当烟室充满第二参考气体并根据第一和第二校准数据和输出数据计算与来自A / D转换电路的输出数据相对应的适当的烟雾浓度时， 来自A / D转换器电路的显示装置，用于显示由计算装置计算的烟浓度。

    PRESENCE DETECTION USING RFID TAGS AND READERS
    67.
    发明公开
    PRESENCE DETECTION USING RFID TAGS AND READERS 审中-公开

    公开(公告)号：EP4210014A1

    公开(公告)日：2023-07-12

    申请号：EP22150811.2

    申请日：2022-01-10

    申请人： Carrier Corporation

    发明人： MAZUR, Mateusz ,  KRUTSKEVYCH, Nazar

    IPC分类号： G08B13/24 ,  G08B29/18 ,  G08B29/20

    摘要： A presence detection system (100) comprising: an RFID interrogator (102); and a plurality of passive RFID tags (11 to MN), wherein the RFID interrogator (102) is configured to: measure a received signal strength indicator (RSSI) level from each of the plurality of passive RFID tags (11 to MN); compare a measured RSSI level to a reference RSSI level for each of the plurality of passive RFID tags (11 to MN); and determine whether a difference between the measured RSSI level and the reference RSSI level is greater than a threshold value.