会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 9. 发明申请
    • Device including light emitting diode as light sensor and light source
    • 设备包括发光二极管作为光传感器和光源
    • US20050036294A1
    • 2005-02-17
    • US10639374
    • 2003-08-12
    • Michael McMahon
    • Michael McMahon
    • G01D11/28H05B33/08H05B37/02
    • H05B33/0818H05B33/0845H05B37/0218Y02B20/46
    • A battery operated controller for a door operator includes a keypad backlit by a light emitting diode operably connected to a microcontroller which also controls operation of the controller. The microcontroller periodically measures ambient light as sensed by the light emitting diode and when a voltage level related to a predetermined light intensity decreases below a predetermined level the light emitting diode is energized to provide backlighting for the controller keypad. The intensity of backlighting may be varied in accordance with the amount of ambient light illuminating the keypad and above a certain intensity of ambient light the light emitting diode is de-energized to conserve battery power.
    • 用于门操作器的电池操作的控制器包括由可操作地连接到微控制器的发光二极管背光的键盘,其也控制控制器的操作。 微控制器周期性地测量由发光二极管感测的环境光,并且当与预定光强相关的电压电平降低到预定水平以下时,发光二极管被激励以为控制器键盘提供背光。 背光的强度可以根据照亮键盘的环境光的量而变化,并且高于一定强度的环境光,发光二极管被断电以节省电池电力。