Development And Application Of Active Timing System Based On Internet Of Things Technology

With the in-depth implementation of the national strategy of national fitness,sports fitness has attracted the attention of the broad masses of the people.Under the guidance of multiple policy documents,various sports events are booming,and people gradually change from spectators to participants.With the further segmentation of the competition market of racing events,some events put forward higher requirements for the accuracy of chip timing.The traditional passive chip timing has been unable to meet the growing timing demand.In order to solve the problem of low chip timing accuracy in the domestic market,referring to the development process of foreign chip timing and combined with the development of domestic chip timing,this paper proposes a solution of active RFID timing system,and integrates the Internet of things technology to make the system practical and real-time.After analyzing the relevant working principles,technical standards and key technical difficulties of the active timing system,this paper studies the technical characteristics of RFID,demonstrates the feasibility of designing the active timing system,and designs and develops the system,including chip selection,circuit design,physical production and function debugging in hardware;Software framework design and related hardware drivers;The actual programming and verification of the algorithm,the joint test of software and hardware,and the verification of the active timing system through the actual competition.The main innovations of this paper are:1.In terms of hardware,the traditional active RFID wake-up circuit is improved,starting with increasing the wake-up signal strength and improving the sensitivity of the active tag,and then increasing the working distance of the active timing system,so that the active tag can adapt to complex event application scenarios.2.In terms of software algorithm,this paper proposes and tests a practical and reliable multi label anti-collision algorithm,and verifies the accuracy judgment algorithm based on radio signal strength(RSSI),so as to improve the stability of the active timing system.3.In terms of system architecture,this paper combines the Internet of things technology to make the active timing system practical and verify the real-time performance of the system in actual events.At the same time,the system developed in this paper has certain scalability and provides rich data interfaces for subsequent development.