Especially,the high pressure micro air-compressor,pre-warning device for grout leaking and returning,treatment device for grout leaking and returning have been also developed recently through the relevant technical cooperation;which have already satisfied all the technical requirements and the technologies for the grouting of foundation rock at present.

Treatment to the scale depositing in the air compressor cooling water circulation system;

Noise reduction technique of outdoor heavy air compressor;

The control vibration of the air compressor train in PTA plant;

Multi-computer control based on CAN bus for air compressors;

This paper carries out an approach of theory, key technique and implement method of a system which is able to monitor several air compressors remotely by a computer network.