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    • 2. 发明申请
    • Moisture sensor sprinkler control systems
    • 湿度传感器喷淋头控制系统
    • US20050087620A1
    • 2005-04-28
    • US10695920
    • 2003-10-27
    • John BowersJohn Bowers
    • John BowersJohn Bowers
    • A01G25/16B05B12/08
    • A01G25/167Y10T137/189
    • Irrigation systems, moisture sensors and related methods having a sensor imbedded in the ground to sense moisture and help control watering. The sensor is responsive to capacitance changes from ground moisture variations. The sensor uses spaced insulated electrodes which are mounted within a granular filled chamber within a water-permeable shell. The sensor is mounted as part of a ground unit that also includes a high frequency driver that excites the sensor. The ground unit further has a detector circuit which produces a moisture indicating signal based on the capacitance which varies with ground moisture. Also disclosed are controllers that electrically isolate the ground units so that reliable moisture signals can be obtained and used to control irrigation. The controllers can be configured to provide multiple zone operation using a shared controller having shared or independent moisture adjusters.
    • 灌溉系统,湿度传感器和相关方法将传感器嵌入地面以感测水分并帮助控制浇水。 传感器响应于地面水分变化的电容变化。 传感器使用间隔开的绝缘电极,其被安装在透水外壳内的粒状填充室内。 该传感器作为地面单元的一部分安装,该接地单元还包括激发传感器的高频驱动器。 接地单元还具有检测器电路,其基于随地面水分而变化的电容产生湿气指示信号。 还公开了将地面单元电隔离以便可获得可靠的湿度信号并用于控制灌溉的控制器。 控制器可以配置为使用具有共享或独立湿度调节器的共享控制器来提供多个区域操作。