Rope skipping counting method and system based on ultrahigh frequency RFID

Abstract

The invention discloses a rope skipping counting method based on an ultrahigh frequency RFID. The method comprises the steps of carrying out the denoising of an RSSI signal W0 in an extracted wireless radio frequency signal, and forming an RSSI signal sequence W1; determining a search length L0 and a search step S of a search interval based on the limit rope skipping speed, searching a valley-peak value in the RSSI signal sequence W1, and judging whether an effective rope skipping behavior exists based on the searched valley-peak value; if the judgment result is that an effective rope skipping behavior exists, putting the valley value and the peak value of the effective rope skipping behavior into a valley value data set and a peak value data set respectively, meanwhile, adjusting the search length L1 of the search interval based on the actual rope skipping speed, continuing to search all the valley values and the peak values of the RSSI signal sequence W1, and putting the valley values and the peak values into the valley value data set and the peak value data set respectively till the rope skipping behavior is finished; and calculating the rope skipping number of the user based on valley values and peak values in the valley value data set and the peak value data set. Rope skipping counting is achieved based on radio frequency signals, and the rope skipping number of the user to be tested can be accurately calculated in the environment with weak light and noisy sound.

Description

technical field [0001] The invention belongs to the technical field of radio frequency identification, and more specifically, the invention relates to a method and system for counting rope skipping based on ultra-high frequency RFID. Background technique [0002] Globally, the problem of overweight and obesity is becoming more and more serious, seriously affecting the health of modern people. Rope skipping training is a medium-to-high-intensity aerobic fitness exercise. You only need a skipping rope to play a variety of sports tricks. Not only helps to prevent the occurrence of various diseases, but also can achieve the effect of strengthening the body. [0003] With the development of intelligent sensing equipment, researchers at home and abroad have studied rope skipping counting devices and rope skipping counting methods. The existing skipping rope counting methods are mainly based on image recognition and voiceprint recognition. Image recognition-based target tracking ...

AI Technical Summary

Problems solved by technology

Image recognition-based target tracking jump rope counting equipment has high performance requirements and is expensive, and is not suitable for scenes with weak ambient light and privacy-sensitive

The main method of counting rope skipping based on voiceprint recognition is to obtain the sound extraction times information when both feet land on the ground during rope skipping. Such methods are very sensitive to noisy environments, and are almost unusable especially in the scene where multiple people skip rope at the same time.

[0004] In the application scenarios such as rope skipping exams in the prior art, there is a problem that the counting of each candidate’s skipping rope is not accurate, and in addition, it is impossible to realize the counting of rope skipping by multiple people

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