JP2016159128A - Wireless spring time measurement system for automatically detecting movement of start of runner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sprint time measurement system that automatically performs a series of operation to the start of a runner, can accurately decide possibility of flying by sensing the movement of the runner, and enables time measurement alone.SOLUTION: In a runner side unit worn by a runner on a body, a voice such as ready, steady and go is output, and is transmitted to a goal side unit by radio. An acceleration sensor built in a runner side unit detects the movement of the runner to detect flying. The goal side unit starts measurement based on the signal received from the runner side unit, and detects the fact that the runner reaches a goal line with an infrared sensor built in the goal side unit, and thereby time measurement is performed and the time is displayed on a display device.SELECTED DRAWING: Figure 1

Description

  The present invention is a time measurement system that does not depend on the distance to automatically detect the runner's start motion by an acceleration sensor, determine whether or not to fly, and wirelessly transmit the time from the runner side to the goal device when passing the goal line.

In the practice of sprinting in the track and field club, the stopwatch is mainly used to measure time.
When measuring with a stopwatch, two people are required to measure the time: a starter that shows the start phase diagram and a person who operates the stopwatch at the goal point.
The biggest disadvantage of measuring with a stopwatch is that an error of about 0.2 seconds occurs due to a delay in reaction time caused by human operation, and accurate time measurement is not possible at present.
In the track and field tournament, mechanical precision measuring instruments have been introduced, but it is difficult to install them at the school level due to the need for wired installation from the start to the goal point and the expensive measuring equipment.

It is easy to install and can measure sprints with little error.

Inexpensive equipment that can be introduced at school level.

It is possible to measure the time of sprinting alone.

Flying detection from start to operation can be accurately determined.

It is possible to measure time with multiple people.

In order to solve the above-mentioned problems, sensing and analyzing the runner's movement enables more accurate measurement including flying than the current stopwatch. In addition, by providing a time transmission function on the runner side, time measurement can be performed without depending on the distance that is also a weak point of radio.
In terms of installation, it is easy to install by simply installing a transmitter on the runner and placing a receiver at the goal point. As a result, since the scale of the equipment is small, it becomes an inexpensive measuring instrument, and the introduction at the school level can be promoted.

According to the present invention, the following effects can be obtained.
(1) Short distance measurement with few errors can be performed.
(2) Short distance measurement can be performed independently.
(3) The measuring instrument is small and anyone can install it easily.
(4) Since the measuring instrument is small, it becomes an inexpensive measuring device.
(5) From (4), it can be introduced at the school level.

Figure 1 is a block diagram of the unit on the runner side, which has functions to sense with the runner's motion sensor, determine the runner's flying, measure the runner's run time, and transmit to the receiver. Fig. 2 is a block diagram of the goal unit, which has the function of receiving time data sent from the runner unit, detecting the runner's goal passing, and displaying and saving the run time on the LCD screen. . Fig. 3 is a flowchart of the operation of the unit on the runner side. Fig. 4 is an operation flowchart of the goal unit. Figure 5 shows a time transmission method independent of distance.

Claims (6)

A sprinter that measures the start of a sprinter by an acceleration sensor and detects the starter's start by jerk and measures the time to the goal point. A sprinter that senses the goal line with infrared or pyroelectric sensors or some combination to detect a runner passing the goal line. A short-range measuring instrument that minimizes the number of devices to be installed by wirelessly communicating data between the runner side unit and the goal side unit. By providing a time measurement function to the runner side unit, even with a weak radio wave, time can be measured without depending on the distance by sending the time to the goal side unit around the goal (within the reach of the radio wave). A sprinter. A short-distance running measuring instrument that has the function of the runner side unit to sound the “position”, “preparation” and “start” signals, automatically detect the flying from the start to the start operation, and transmit it to the runner. A short-range measuring instrument that can measure the time of multiple people simultaneously by synchronizing multiple runner-side units.

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