Design of Electronic Induction Device for Long Jump Starting Point Position Based on 51 Single Chip Microcomputer and Sensor

This paper proposes a design solution for a jump sensor device without a takeoff line, based on the long jump sport. It utilizes a photoelectric detection array to cover the takeoff area. When an athlete enters the take-off zone, the photoelectric detection sensors can accurately identify this event. The columns corresponding to the take-off moment are recorded with respective scales, enabling precise determination of the athlete's takeoff position without a takeoff line. The core circuit model is built around the 51 Single Chip Microcomputer, providing essential reference programs and proposing an automatic sensitivity adjustment scheme for photoelectric detection.