The principle and the components of the inductive ventilation systems used for the civil air defence underground garage of the Lantian Computer Ltd in Nanjing were introduced.

No-duct inductive ventilation system design for an underground park;

Preliminary study on inductive ventilation system design method;

s: A brief introduction of the principle, constitution and feature of inductive ventilation system was made.

This artice introdues the principle,structure and characteristics of new-style induced ventilation system that is devoid of pipelines.

Study on real-time method of traffic flow guidance system;

The issue about optimal route selection of an in-vehicle traffic flow guidance system was discussed.

One function of an in-vehicle traffic flow guidance system is route optimization.

Based upon the composing, principle and advantages of derivational ventilation system without wind pipe, design of ventilation and smoke-proof system of underground garage are elaborated and this system is proposed to be proper and have good profit and ventilation effect.