Transmission electronic odometer speed-measuring system and method

Abstract

The invention proposes a transmission electronic odometer speed measuring system and method, and it is for speed measuring error caused by the transmission electronic odometer having error in the existing technologies, providing a transmission electronic odometer speed measuring system, including: the electronic control module, and the electronic control module is used for receiving the pulse signal issued by the said sensor, and with its internal first timer to set the pulse signal acquisition time. Also it provides a speed measuring method, including: statistic the interval between each twoadjacent pulse signals received by the electric control module during the available time of the first timer; sorting the above intervals, and in accordance with the predetermined ratio, deleting the maximum and minimum; computing the remaining intervals to obtain an average value, and using the average interval to calculate the rotating speed. The invention can accurately measure the rotating speed, and solve the problem that the transmission electronic odometer can not be quantitative evaluated.

Description

technical field [0001] The invention relates to a transmission electronic odometer and a speed measurement method thereof, in particular to a transmission electronic odometer speed measurement system and a speed measurement method. Background technique [0002] The traditional speed odometer is mechanical. A typical mechanical odometer is connected to a flexible shaft. There is a steel cable inside the flexible shaft. The other end of the flexible shaft is connected to a certain gear of the transmission. The rotation of the gear drives the rotation of the steel cable. The cable drives a magnet in the cover ring of the odometer to rotate. The cover ring is connected with the pointer and the pointer is placed at zero through the hairspring. The speed of the magnet rotation causes the change of the size of the magnetic force line, and the balance is broken, so the pointer is driven. This speed odometer is simple and practical, and is widely used in large and small cars. Howeve...

AI Technical Summary

Problems solved by technology

[0014] Aiming at the defects and deficiencies in the prior art, the purpose of the present invention is to propose a transmission electronic odometer speed measurement system capable of accurately measuring the rotational speed, which can overcome the increasing deviation caused by the defect of the pulse signal generating module in the prior art. Larger problems, and the advantage of having direct calculations for different impulse signals

Images