Design Of Arrow Screening And Automatic Target Scoring System

At present,archery sports,in competitive games or entertainment activities,mostly use traditional manual methods when screening arrows and targets.Manual screening of arrows and artificial target-reporting has a large workload,low efficiency,and poor results,with personal subjective factors,which is not conducive to the development and promotion of archery.Until now,there has not been a system for automatically screening consistent arrows.However,the existing automatic target scoring has changed the traditional artificial target-reporting method from acoustic,optical,and electrical signals,it has high cost and poor adaptability.Many defects,such as inaccurate target,inconvenience based on computer,etc.,have not been widely promoted.According to the above situation,this paper designs a mechanical system for screening consistent arrows based on PLC control technology,and designs an automatic archery target system in Android intelligent terminal based on image processing algorithm.This paper analyzes the situation of the archery sports project,determines the system design requirements,and explains the overall working principle of the system.Then,according to the design requirements,an arrow screening device based on the PLC control system to completely simulate the athlete's archery action,accurately control the position of the string,and ensure the consistency of the bow is designed.And this article briefly describes the various components of the device.For the mobile terminal,image processing algorithm of automatic target scoring is determined:firstly,the image is pre-processed by graying and morphological filtering,and then the target initial information is extracted to derive the correction algorithm for geometric correction of the target image.Furthermore,The inter-frame difference method is used to detect the target arrow to obtain the coordinates of the target position,and finally,the target is divided into the connected domain and the ring value is determined by comparing the connected domain of the arrow position.In order to better serveusers,this topic developed an automatic target scoring software system in Android terminal.Through the UI interface with friendly interaction,the system realizes real-time automatic target and display results,and visually displays the distribution of arrows to analyze archery conditions or filter arrows,and query past performances through personal information and time.Aiming at the problem that the Android terminal has limited ability to process images,the image processing algorithm and memory are optimized,so that the program can run stably in the mobile terminal.After the acceptance and testing by the State General Administration of Sports,in the screening of the arrow,the system can fully simulate the archery movement of the athlete to achieve precise control of the archery process,thereby improving the effectiveness and efficiency of the arrow screening,and eliminating the influence of the inconsistency of the arrow on the athlete's performance.In the automatic target scoring,the position and score of the arrow can be quickly and accurately determined,and the results are stored,so that a large amount of data can be collected for the coach and the athlete to analyze the score.In summary,the system can be used in the practical application of archery screening arrows and targets scoring.