Sports Timing System “SKIt”
autorzy: Anhelina Nedoshytko, Andrii Nedoshytko
SKIt Sports Timing System project was previously appointed to record the time of distance passing by snowboarders - pupils of Ternopil children and youth sports school "Extreme". Until now, measurements were usually performed using stopwatches. Coordination of operators’ actions were implemented by walkie-talkies. At the same time, there was a large measurement error, which affected results and often caused dissatisfaction of participants. Therefore, there was a necessity to develop a proper timing system, as professional ones are quite expensive and not affordable for most sports clubs. First, a problem area was analyzed and functional needs were identified. Next, existing solutions were reviewed. The structure of development was determined, element base was selected, system functioning algorithm was developed. The system prototype has been developed, which includes start and finish modules, data transferring between which can be carried out by radio or wired connection. Each module is controlled by Arduino microcontroller platform and contains a sensor that allows you to monitor the intersection of start and finish lines. The system has two modes, which were defined by technical tasks given by children and youth sports school "Extreme". The following requirements were included: - Automatic fixation of the crossing time of start and finish zone. - Operation of the system manually and automatically. Manual mode : participants start on the signal of sound and light detector, which activates with the help of a remote control on start button. Automatic mode: the system determines the moment of intersection of start and finish modules and calculates the time of overcoming distance itself. - Possibility of alternate start of participants. - Communication between modules must be conducted via wired connection or radio channel up to 2 km distance. - Data output to the information display. - Autonomous operation of the system and ability to operate at low temperatures. In the process of examining the system, we discovered the following peciliarities: 1. As we use laser barriers, it is important for participant's clothing to be able to reflect this beam. It turned out that not all fabrics have this property. Therefore, there were cases when we glued colored tape to participant's leg. 2. Since the system is mainly used in the open, we have encountered the problem of fixing intersection of start / finish zone, when snow or rain enters the area of laser barrier. The beam reflects from the obstacle, which causes module to malfunction. 3. LoRaWAN radio technology is used to ensure a reliable data transferring between modules and save battery power. Having analyzed the peculiarities of data transferring in LoRaWAN, it was discovered that delay in data transferring could last up to 2 seconds, which led to a slight error during synchronization of modules. The essence of the study lies in developing a device functioning algorithm; the choice of data transmission technology between modules to meet the needs of efficient and reliable functioning of device. This device can be used in sports sections for different age categories, in athletics, cycling, snowboarding, etc., where registration of exact time is used.
Ochrona własności intelektualnej
poziom gotowości technologicznej
TRL 5 prototyp