| 摘要 |
The device has a measuring instrument (1) having an activity sensor for collection of the physical activity of a measuring instrument carrier and a time registration unit (5) for the collection of temporal dependence of the seized physical activity on the collected quantity of light. A control device is provided for controlling the delivery of the signal of lack of light in dependence of the collected physical activity and their temporal dependence on the collected quantity of light is provided. |
