| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable a movable body moving at a high speed to be reliably detected.SOLUTION: In a movable body detector, when a trigger of an electronic pistol 100 is pulled, the electronic pistol 100 outputs a radio signal indicating a start. When a radio part 240 receives the radio signal, a clock part 220 starts timing. An IC tag 300 is attached to a shoe of a runner, and outputs a unique identification signal wirelessly. When the runner lands on an antenna part 210, the antenna part 210 receives a unique identification number output from the IC tag, and identifies the runner using the identification number. The clock part measures the time when the runner passes on the antenna part 210 simultaneously. A processing part 230 acquires a running time until each identified runner (IC tag) passes a predetermined measurement spot based on the measured time.</p> |
