JPS59196493A - Real running time measuring system in marathon race - Google Patents

Abstract

PURPOSE:To accuratly detect a real running time for individual runner, by sweeping a reference point such as a start line or a goal with laser beam while transmitting a discriminating number only from a response device to which laser beam is incident. CONSTITUTION:A reference point such as a start line or goal is swept by laser beam 19 modulated by an alternating signal and a discriminating number is transmitted only from a response device 10 to which the laser beam 19 is incident. A receiver 12 serially receives the discriminating number every when a runner passes and this discriminating number and time output are recorded by memories 14, 15. By processing the data stored in the memories with a computer 16, a real running time is measured at every runner and outputted to a printing apparatus 17 or a display apparatus 18.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for measuring the actual running time of each runner in a marathon competition.

In marathon events with a large number of participants, it takes several minutes from the start time until all runners cross the starting line. Because of this, it was extremely difficult to measure the exact actual running time for each runner.

Therefore, this invention was devised to solve these problems in marathon competitions, and when a laser beam modulated with a police box signal is received, a radio wave modulated with a unique identification number is generated. A transponder that transmits a signal is worn on each runner's shoulder or head, and reference points such as the start line and finish line are swept with a laser beam modulated by an alternating signal. By setting the time when the identification code received and transmitted at the start line is the start time, and the time when it is received at the finish line as the arrival time, the actual running time for each runner can be determined from the time between the two times. It is configured so that it can be obtained.

As shown in Figure 2, each runner includes a photoelectric conversion element (5) such as a solar cell, and a band pass filter (6) that passes an alternating signal obtained from the photoelectric conversion element (5).
an identification number generator (7) activated by the output of the filter (6); and a transmitter (8) that transmits radio waves modulated by the number output of the identification number generator (7).
A transponder (10) consisting of an antenna (9) such as a loop antenna for transmitting the output of this transmitter (8) is worn. The coded number output generated by the identification number generator (7) represents the identification number for each runner, and is different for each responder (10).

On the other hand, at the start line or goal, as shown in Figure 1, the transponder (10) is activated and the output of the alternating signal source (2) is used to receive the transmitted identification number. A laser light source (3) emits a brightness-modulated laser beam (19), and a laser beam (19) is started.
An optical system (1) consisting of a rotating reflector (4) that sweeps along a line or goal, and an antenna (11) and receiver (12) that receive radio waves transmitted from a transponder (10).
It is equipped with a receiving system consisting of:

The identification number received at the start line is used as an address, and the memory 04 in Figure 1 stores the time output of the time signal generator (13) at the time of reception as data, and the identification number received at the goal is used as an address. year,
A second memory (15) that stores the time output of the time signal generator (13) when received as data, and a computer (15) that processes the data stored in these two memories (14) and (15). 16)
This computer (16) has two memories (14)
, The actual running time of each runner is determined from the data stored in (15), and the actual running time is output for each runner, or the actual running time is arranged in order to determine the ranking. the printing device (17) and display device (18).
).

Since reference points such as the start line and goal are swept with a laser beam (19) modulated by an alternating signal,
Since the laser beam is not incident on multiple transponders (10) at the same time, but is incident on a single transponder (10),
The identification number is not transmitted from a plurality of transponders at the same time, but only from the transponder (l) on which the laser beam (19) is incident.

Therefore, in the receiver (12), each runner is serially assigned an identification number each time the runner passes, and the computer (16) processes the data stored in the memories (14) and (15). It is possible to measure the actual running time for each vehicle.

Incidentally, to capture the intermediate lap times of each runner on a nine-time basis, it is sufficient to provide a device as shown in FIG. 1, and to add memory accordingly.

As explained above, according to this invention, it is possible to accurately know the actual running time of each runner, so there is no need to start all together, and it is only necessary to start dispersed, which reduces confusion at the start. It also has the additional effect of being evasive.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the actual running time measurement method of the present invention, and FIG. 2 is a block diagram of a transponder used in the measurement method of FIG. 1. 2...... Alternating signal source 3... Laser light source 4... Rotating reflector 5... Photoelectric conversion element 6 -・l111・ Band-bass filter 7
・・・・・・・・・ Identification number generator 8・・・・・・・
- Transmitter 10 ...... Responders 9 to 11 ---' Antenna 12 ...... Receiver l3 ...... Time signal generator 14.15
・1- Memory

Claims (1)

[Claims] Installed at a reference point such as a start line or goal,
a laser beam sweeping means that sweeps the area where the runner is scheduled to pass with a laser beam modulated by an alternating signal; a photoelectric conversion element that receives the laser beam and obtains the alternating signal; and the photoelectric conversion element is activated by the alternating signal; A transponder to be worn by each runner comprising a transmitter that transmits radio waves modulated with a unique identification code signal, a memory that stores the identification code signal in association with the output of the AAL signal generation circuit, and the memory. A method for measuring actual running time in a marathon competition, comprising: a computer that calculates the actual running time for each runner based on data stored in the computer.