By means of the thread amount measurement over the thread-demanding and thread-taking-up of thread hooking mechanisms in lockstitch sewing machines and the thread-supply and thread-taking-up of the thread-taking-up mechanisms, the basic features of the thread amount variation will be learned.

On-line Measurement and Compensation Machining of Thermal Error for NC Machine Tool;

Study on image segmentation method for on-line measurement of tendon thickness for flexible connector;

On-line measurement of microwave power in ECR ion source;

With the development of pipe online measure system, it became necessary to research on its integrated monitor program.

Development of on-line measuring system for flatness;

Amethod of busbar temperature rise on-line measuring for HV switch board is instroduced,and the application example is given.

Selecting Distributed Feedback Laser Diode (DFB LD) as light resource and the gas absorbing cell with fiber pigtail as its sensor, and using lock in amplifier to distill signal and harmonic measure technology to process that distilled faint signals, we design an instrument of remote and on-line measuring acetylene.

A new accurate technology of online measurement and closed-loop control for spray height of the nozzle was studied.

Software and hardware design of the main computer MACSYM are developed based on the above techniques,and online measurement of roundness error of parts.

Meanwhile, some new online measurements for alkali metal vapor were introduced.