A new method has been developed to calculate the contact force between tachometric wheel and tube, and based on it a new tachometer has been designed, which is reasonable in design and reliable in work.

Application of DSP in speed measurement radar for communication;

This paper discusses the application of high-speed counter module to distance measurement and speed measurement of mine winder,gives the echelon diagram of travel distance and speed measurement of mine winder,and analyzes the detecting precision and resolving ratio for speed and distance.

Application of supersonic velocity measurement in air track experiment;

A method of high precision underwater target velocity measurement;

A method based on chirp up and chirp down signals for velocity measurement is presented.

Application of 8254 in the freeway ultrasonic speed measure;

Speed Measuring using CPLD in Induction Motor Control System;

Study on the methods of train locating speed measuring and data transmission for maglev train;

Based on these analyses and taking the current development situation of high-speed maglev train in China into account, the guidelines for the maglev train location and speed measuring were provided.

Research on positioning and measuring speed in the high speed SAR system based on high precision map matching;