Occupancy sensor and method of operating same
    1.
    发明授权
    Occupancy sensor and method of operating same 失效
    占用传感器及其操作方法

    公开(公告)号:US5640143A

    公开(公告)日:1997-06-17

    申请号:US384580

    申请日:1995-02-06

    摘要: An occupancy sensor that provides improved performance by the inclusion of a microprocessor that controls the sensing transducers and processes the received signal to optimize desired detection performance. The occupancy sensor includes a quadrature detection technique and automatic sensitivity adjustment that reduce false detection caused by air flow, hallway traffic and other noise sources. A fault detection method executed periodically detects fault conditions in the sensor or sensing area caused by component failure or obstructions in front of the sensor. Transmitter power is varied depending on the size of the desired coverage area. Since various ambient parameters such as line voltage, light level, and temperature may be easily and usefully monitored, the microprocessor may use these variables to make intelligent decisions in controlling electrical loads, such as building lighting and ventilation.

    摘要翻译: 一种占用传感器,其通过包括控制感测换能器并处理接收信号的微处理器来提供改进的性能,以优化期望的检测性能。 占用传感器包括正交检测技术和自动灵敏度调节,可减少由气流,走廊交通和其他噪声源造成的误检。 执行的故障检测方法周期性地检测由传感器前面的部件故障或障碍物引起的传感器或感测区域中的故障状况。 发射机功率根据所需覆盖区域的大小而变化。 由于诸如线路电压,光电平和温度等各种环境参数可能容易和有用地被监控,所以微处理器可以使用这些变量来做出智能决定,以控制诸如建筑照明和通风的电负载。