Track Starting Point Signal Processing System Development

In competitive sports events, sports results confirmed that on the previous manual timing can not meet demand, according to the IAAF, all major sports tournament will require the use of electric timing system. The track is the starting point for signal processing an accurate measurement of the real achievements of the athletes based on the core premise is the starting gun sound data and information 10-runway starting signal processing data to complete by the judge to achieve the functions and tasks. At present, China held large-scale tournament, electrical timing device is introduced from abroad. The price of foreign products is very expensive and not suitable for widespread use. In this paper, AT89C52 MCU developed on the basis of a set of track from signal processing system. The system through the application of the compilation process will AT89C52 MCU and function of the hardware (the runway pressure sensor, the runway speakers, the runway warning light) combined, users can track the starting point signal processor to operate the system, thus completing the various Runway and the sound of gunfire in the amount of information collection, analysis, judgment false start, false start alarm, false start recall, the time signals start / end time of the serial signal transmission, and other functions.First, the main contents of the paper are as follows:1. Starting gun sound sensorIn order to improve the efficiency track gunshots, the starting gun produced only a starting signal, the signal MCU received after launch music chip simulated gunfire and transmit them to the runway block on loudspeakers. To ensure that all athletes can timely and accurately hear gunshots.2. False start discriminatorIAAF track order, after gunshots 0.1s of the grid but also to the false start, since January 1, 2003, starting the first foul athletes should be given a warning, after starting each of the athletes are fouls The project should be cancelled for the game.3. False start processingWhen a false start, the corresponding block lights will flicker, and all block through loudspeakers on the chip have sirens, so as to achieve sound and light alarm, ensure that all players at the same time access to information.4. Timing signals in the wireless transmissionTo prevent aging makes cables, starting with the end of the communication be affected, the system uses wireless terminal, starting with the mode of communication, from starting time signal processing systems, and through more precise timing correction signal transmission to the end, making electronic timing more precise.Second, the innovative aspects of this paper1. Presents a simple and practical method of discriminator false start, making Inter-School Games false start discrimination automation, inter-school games will push forward the reform process a step forward.2. Starting point of time will be achieved through a wireless signal transmitted to the end, so as to avoid the shortcomings of the wire line equipment, making results more accurate track.