| 摘要 |
[Problem] Conventionally, for controlling automatic switch on/off devices using an illuminance sensor or the same incorporated in various devices, no method has been devised other than a method using simple sensitivity adjustment. Accordingly, it has been difficult to implement accurate control, and it has been considered that development of practical sunglasses using liquid crystal, for example, is difficult. No device has also been available that can implement accurate control using a plurality of illuminance sensors. In addition, there has been no device that performs illuminance sensor level determination for light-on and light-off separately. [Solution] The conventional inaccurate control based on a simple determination of the illuminance sensor signal is improved by the following six means. First, the user is enabled to freely adjust the output of an illuminance sensor or signal processing thereof at all times, using various means; secondly, the adjustment and even signal processing conditions and output are modified depending on conditions at the time of the adjustment; thirdly, the modifications are stored and used or added as new signal processing conditions; fourth, a plurality of illuminance sensors is used to enable more accurate illuminance determination; fifth, in the case of control using a binary output, the illuminance sensor determination level is made different between light-on and light-off, so as to enable more accurate control; sixth, the illuminance sensor output signal is recorded in a recording device on a 24-hours basis, and a relative determination is made for the recording and used for comparison with a real-time illuminance sensor signal and for signal processing. |
