The article analyses the noise of source of ventilator in mine, giving the procedure of design of secondary muffler of ventilator in mine and using of comlex control technology, Effect of reducing noise is clear, the remarkable effect provides experience in dealing with the noise problem of ventilator of mine.

This paper gives the procedure of design of secondary muffler of ventilator in mine using newly signal processing,dynamic optimization, finite element method, analysis of sensitivity and stuctural amendment.

Design on reasoning engine of mine fan fault diagnosis expert system;

On-line monitoring system for mine fans

Fault diagnosis of mine ventilator base on multi sensor information integration;

On the basis of least square and law of similarity of ventilator, the dimensionless performance curve equations of mine ventilator by operating data are fitted and the characteristic curve equation of mine ventilating network according to its characteristic factors is constructed.

For a weakness of the mine ventilator selecting system on the internet during the usage of customers and the imperfect of the ventilation house plan,the developing technology depending on the object-oriented design technology and the parametric drawing technology based on CAD ActiveX Automation technology have been adopted.

Outstanding check of performance curve model for mine main fan;