Pyroelectric infrared sensor
    1.
    发明授权
    Pyroelectric infrared sensor 失效
    热电红外传感器

    公开(公告)号:US4437002A

    公开(公告)日:1984-03-13

    申请号:US254433

    申请日:1981-04-15

    CPC classification number: G01J5/34 H01L37/02

    Abstract: A pyroelectric infrared sensor for use in intrusion alarm systems, including a pyroelectric ceramic element provided with two pairs of electrodes, of which the front electrodes are so configured as to permit a simplified printing process for higher productivity and lower production costs. The front electrodes each have a first region overlapping with a part of one of the back electrodes and a second region overlapping with a part of the other of the back electrodes, and are arranged adjacent to each other and are electrically insulated from each other. The first regions and the second regions of the front electrodes have a ratio of areas of approximately 1:1. The pyroelectric element is attached to a holding member which is so designed that the back electrode areas of the element are free from physical contact with any thermally conductive solid material that may detract from the thermal responsiveness of the element. The element is accommodated in a protective can, wherein the distance between the element and the back surface of a supporting stem is maximized so as to minimize the thermally hazardous contamination via the back surface of the stem facing a thermal body and thus to stabilize the characteristic of the sensor.

    Abstract translation: 一种用于入侵报警系统的热电红外传感器,包括具有两对电极的热电陶瓷元件,其中前电极被配置为允许简化的印刷工艺以提高生产率和降低生产成本。 前电极各自具有与背电极中的一方的一部分重叠的第一区域和与背电极中的另一方的一部分重叠的第二区域,并且彼此相邻布置并且彼此电绝缘。 前电极的第一区域和第二区域的面积比约为1:1。 热电元件附接到保持构件,该保持构件被设计成使得元件的背面电极区域与任何导热固体材料没有物理接触,这可能会降低元件的热响应性。 元件容纳在保护罐中,其中元件与支撑杆的后表面之间的距离最大化,以便通过面向热体的杆的后表面使热危害污染最小化,并因此稳定特性 的传感器。

    Pyroelectric infrared sensor
    2.
    发明授权
    Pyroelectric infrared sensor 失效
    热电红外传感器

    公开(公告)号:US4800278A

    公开(公告)日:1989-01-24

    申请号:US928248

    申请日:1986-10-17

    CPC classification number: G01J5/34 G08B13/191 Y10S250/01

    Abstract: External noise in an infrared sensor for a ceiling type human detector is suppressed by increasing the conductivity between a conductive window and the can and improving the temperature compensation by offsetting any difference in the electromotive force per unit area of the inside and/or outside electrode of the sensitive element consisting of coaxial electrodes with different areas. In a pair of electrodes for ceiling mounting the electromotive force is larger than in a pair of lower electrodes for floor mounting. The sensor improves a total sensitivity for use in the infrared sensor for a wall installation type human detector, on account of improving performance and reliability of the pyroelectric infrared sensor for use as a human detector.

    Abstract translation: PCT No.PCT / JP86 / 00275 Sec。 371日期1986年10月17日第 102(e)日期1986年10月17日PCT提交1986年5月30日PCT公布。 公开号WO86 / 07449 日期:1986年12月18日。通过增加导电窗和罐之间的导电性来抑制天花板型人体检测器的红外传感器中的外部噪声,并通过抵消每单位面积的电动势的任何差异来改善温度补偿 敏感元件的内部和/或外部电极由具有不同区域的同轴电极组成。 在用于天花板安装的一对电极中,电动势大于用于地板安装的一对下电极。 考虑到提高用作人体检测器的热释电红外传感器的性能和可靠性,传感器提高了用于墙壁安装型人体检测器的红外传感器的总灵敏度。

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