The initial phase difference of the fiber interferometer is calculated by measuring the interference photocurrent and the photocurrents from the two fiber arms based on a temperature control plat.

Application of thermostatic control module in opacimeter;

inspection,analysis,exclusion,especially focusing on problems happened in the thermostatic control system,washing water circulation system etc.

However, the measuring systems of insulating oil dielectric loss and volume resistivity used at present exist the shortcoming of low accuracy, weak repeatability, inconvenience, and its thermostatic control system can t meet the challenge.

Research on constant temperature control system based on neural network;

The Design of Constant Temperature Controller Based on Infrared Heats up;

The design of constant temperature control system in laboratory by using single chipmicrocomputer;

Constant current driving and constant temperature controlling techniques are adopted on DFBLD to make the central wavelength of it ac- curately point at detected gas absorption.