This paper introduces a light control and auto explainer system to realize both energy saving and human explainer releasing for museum and exhibition hall.

It introduces the basic requests of the design of underground garage illumination,discusses how to get the traveled lane and parking location illumination in the design of underground garage illumination,and gives the specific transient illumination calculation methods,and represents the lamps and lanterns setting and light control.

In view of low accuracy, low stability and consistency, and narrow range for seed quantity adjustment of the present metering devices, a photoelectric controlled metering device of electromagnetic vibrating type was developed with single-chip computer PIC16F877 being its key part.

The main function modules and design of photoelectric control switch system based on the infrared electronic transducer technology are introduced in detail.

It does not use the “charron ring” but use the photoelectric control system.

To apply it,we only need to make the photoelectrically sensor nipped to the transfusion burette,and set limit scope for dropping speed on display,then the controller automatically enters into monitoring precaution state.

A photoelectric probe is fixed on the buoy of the oxygen flowmeter under non-ventilation conditions.

This paper discusses the basic principles of making control step wedges used in color cine positive film processing and methods of testing their characteristics stability.

In this paper the interaction between lighting environment design and people\'s feeling is discussed by analyzing impacting factors of the illumination,lighting design and glare control.