JP4502932B2 - Competition measurement system and measurement method - Google Patents

Description

  The present invention relates to an athletic measurement system and a measurement method that can appropriately eliminate harmful effects caused by wireless transmission.

  Conventionally, various measurement systems for competition that can manage the start of competition in track, swimming, skating competition, and the like have been introduced. As an example, a conventional measurement system for competition introduced in track and field competitions includes a pistol (starter pistol) for instructing the start, a start signal generator for generating a start sound, a start signal, and the like, and a competition at the start. A start block (starting block) for detecting a player's movement, a flying determination device for determining the presence or absence of a competitor's flying, and a photographing device (photo determination device, etc.) for shooting a video at the time of a competitor's goal Consists of.

The competition measurement system configured as described above manages the start as follows.
First, when the trigger of the pistol is pulled by the starter, a trigger signal is supplied from the pistol to the start signal generating device. In response to the trigger signal, the start signal generating device emits a start sound to notify the competitor of the start, and generates a start signal and supplies it to the flying determination device or the like.
And a flying determination apparatus determines the presence or absence of flying based on the operation | movement timing of the player which the start block detected, and the timing which received the start signal. At this time, if it is determined that there is flying, the flying determination device supplies a recall signal to the start signal generation device or the like to generate a sound for notifying the player of the occurrence of flying.
If it is determined that there is no flying, the competition will be valid, and the video of the competitor at the end of the competition will be taken by the shooting equipment, and the competitor's time (competition time) and the competitor's first arrival will be specified Is done.

In such a measurement system for competition, generally one time (reference time) is measured in the entire system. Based on this reference time, the flying time and the competition time at the goal are specified (measured).
On the other hand, in recent years, a competition measuring system in which a plurality of devices are provided with a timekeeping unit and each of the plurality of devices measures the time is also known. In such a competition measurement system, it is necessary to synchronize the time measured by each device. As an example, a technique is disclosed in which time synchronization between a parent device and a child device is synchronized by transmitting a synchronization signal from the parent device to the child device via a bus line (see, for example, Patent Document 1).
JP-A-10-186063 (page 3-4, FIG. 2)

In the above-described competition measurement system, since various devices are connected by wires (cables and the like), there are cases where various restrictions occur when they are arranged in an actual venue (a competition field and the like).
For example, the cable cannot be placed across the track on which the athlete is running, so the cable can be placed around a large distance, the pole etc. can be placed in the air, or the cable can be placed under the track. It was necessary to place the cable over the existing pipe.
In addition, since it is necessary to arrange cables etc. so as not to interfere with competitors and related parties, there is no freedom in the arrangement of equipment by itself, and it may be difficult to properly arrange depending on the current situation (environment) of the venue There was also.

  For this reason, recently, there has been a demand for the realization of a competition measurement system in which connection of each device by wire is stopped and each device can communicate by wireless communication. In other words, wireless measurement systems for competition have been required.

However, the following adverse effects are concerned with the wireless measurement system for competition.
First, the occurrence of delay due to wireless communication can be mentioned. For example, when a trigger signal or a start signal is transmitted wirelessly, a certain amount of time lag occurs before each device receives these signals. When time lag occurs, flying determination, competition time measurement, and the like cannot be performed accurately.
In addition, when a communication error (such as data loss) occurs during wireless communication, flying determination, competition time measurement, and the like cannot be performed accurately.

  That is, there is a problem that the measurement system for competition is wireless and there is a concern about delay and communication error, and it has not been put into practical use.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a competition measurement system and a measurement method capable of appropriately removing the adverse effects caused by wireless transmission.

In order to achieve the above object, a timing system for competition according to the first aspect of the present invention is:
A start signal generating means for generating a start signal, a pressure signal generating means for sequentially generating an analog pressure signal corresponding to the pressure applied by the athlete at the start, and a determination means for determining whether or not the athlete is flying A competition measurement system in which wireless communication is performed at least between the pressure signal generation means and the determination means,
It said start signal generation means transmits the start signal generated in said determination means,
The pressure signal generating means converts the pressure signal of the analog sequentially generates a digital signal of the PCM system, continuously wirelessly transmitted to said determining means,
Said determining means, said start signal transmitted from the start signal generating means, the presence or absence of flying on the basis of the pressure signal of the analog obtained by restoring from said digital signal wirelessly transmitted by the pressure signal generating means When restoring the analog pressure signal from the digital signal, if there is information lost due to a communication error in the digital signal, the analog pressure signal is restored by interpolation.
It is characterized by that.

According to the present invention, the start signal generation means transmits the generated start signal to the determination means. The pressure signal generation means converts the sequentially generated analog pressure signal into a PCM digital signal, and wirelessly transmits it to the determination means via, for example, a leaky coaxial cable. The determination means includes a start signal transmitted from the start signal generating means, based on the pressure signal of the analog obtained by restoring from a wireless transmitted digital signal by the pressure signal generating means, determine the presence or absence of Flying When restoring the analog pressure signal from the digital signal, if the digital signal contains information lost due to a communication error, the analog pressure signal is restored by interpolation.
As described above, when the pressure signal generating unit and the determining unit are wireless, even if there is data lost due to normal error frequency by wireless communication of digital signals, information transmission is performed by interpolation. Is possible.
As a result, it is possible to appropriately remove the harmful effects caused by wireless communication.

The determination means is based on the start signal sent from the start signal generation means and the analog pressure signal obtained by reconverting the digital signal wirelessly transmitted from the pressure signal generation means in real time. The presence or absence of flying may be determined.
In addition, the determination means may determine the start timing based on the start signal sent from the start signal generation means and the athlete's based on the analog pressure signal acquired from the digital signal wirelessly transmitted from the pressure signal generation means. The presence or absence of flying may be determined by comparing the operation timing.

The above-mentioned competition measurement system further includes trigger signal generation means for generating an analog trigger signal in response to an operation of the starter,
The trigger signal generation means converts the generated analog trigger signal into a digital signal of a PCM method and wirelessly transmits the signal to the start signal generation means,
The start signal generating means may generate the start signal in response to the analog trigger signal obtained by reconverting the digital signal wirelessly transmitted from the trigger signal generating means.

  Wireless communication between the pressure signal generation unit and the determination unit and between the start signal generation unit and the determination unit may be performed via a leaky coaxial cable.

In order to achieve the above object, a measurement method according to the second aspect of the present invention is:
Includes a start signal generating device for generating a start signal, a start block for sequentially generating an analog pressure signal corresponding to the pressure applied by the competitor at the start, and an unauthorized start detection device for determining whether the competitor is flying A measurement method in a competition measurement system,
In the start signal generation device, a transmission step of transmitting the generated start signal to the unauthorized start detection device;
In the start block, the analog pressure signal sequentially generated is converted into a digital signal of the PCM method, and a wireless transmission step for continuously wirelessly transmitting to the unauthorized start detection device;
In the fraudulent start detection device, based on the start signal sent in the transmission step and the analog pressure signal obtained by restoring from the digital signal sent in the wireless transmission step, A determination step of determining presence or absence ,
In the determination step, when restoring the analog pressure signal from the digital signal, if there is information lost due to a communication error in the digital signal, the analog pressure signal is restored by interpolation.
And wherein a call.

According to the present invention, in the transmission step, the start signal generator transmits the generated start signal to the unauthorized start detection device. Further, in the wireless transmission step, the analog pressure signal sequentially generated in the start block is converted into a PCM digital signal and continuously transmitted to the unauthorized start detection device. Further , in the fraudulent start detection device , the determination step is based on the start signal sent in the transmission step and the analog pressure signal obtained by restoring the digital signal sent in the wireless transmission step. Determine presence or absence. In the determination step, when restoring the analog pressure signal from the digital signal, if there is information lost due to a communication error in the digital signal, the analog pressure signal is restored by interpolation.
In this way, when the start block and the unauthorized start detection device are wireless, even if there is data lost due to normal error frequency by wireless communication of digital signals, information transmission is performed by interpolation. Is possible.
As a result, it is possible to appropriately remove the harmful effects caused by wireless communication.

  According to the present invention, it is possible to appropriately remove the adverse effects caused by wireless transmission.

  A competition measurement system according to an embodiment of the present invention will be described below with reference to the drawings. As an example, a case where the measurement system for competition is applied to the track and field competition will be described.

(Embodiment 1)
FIG. 1 is a schematic diagram showing an example of the configuration of a competition measurement system applied to the embodiment of the present invention.
As shown in the figure, the measurement system for competition includes a pistol 1 as a trigger signal generating means, a start signal generating device 2 as a start signal generating means, a start sound generating device 3 (3a to 3c), and a photo determination device 4. And a start signal strobe 5, a start block 6 (6 a to 6 i) as pressure signal generation means, an unauthorized start detection device 7 as determination means, and a recall sound generation device 8.

Note that a leaky coaxial cable 9 (9a to 9c) is connected to the start signal generation device 2 and the unauthorized start detection device 7.
This leaky coaxial cable (LCX: Leakage Coaxial Cable) 9 is a cable capable of transmitting signals and radiating radio waves by providing a radiation mechanism such as a slot in the outer conductor of the coaxial cable.
The leaky coaxial cable 9a is routed to the vicinity of the pistol 1, and wireless communication between the pistol 1 and the start signal generator 2 is performed via the leaky coaxial cable 9a. The leaky coaxial cable 9b is routed to the vicinity of the start sound generator 3 (3a to 3c), and the start signal generator 2 and the start sound generator 3 are connected via the leaky coaxial cable 9b. And wireless communication is performed. Furthermore, the leaky coaxial cable 9c is routed to the vicinity of the start block 6 (6a to 6i), and wireless communication between the start block 6 and the unauthorized start detection device 7 is performed via the leaky coaxial cable 9c. Is done.

The pistol 1 is a starter pistol capable of wireless communication, and transmits a trigger signal to the start signal generator 2 in response to a trigger operation by the starter.
That is, when the pistol 1 generates a trigger signal in response to the trigger operation, the trigger signal is generated through the leaky coaxial cable 9a by wirelessly transmitting the generated trigger signal toward the leaky coaxial cable 9a in the vicinity. Transmit to device 2.
As will be described later, the pistol 1 wirelessly transmits a trigger signal by a PCM (Pulse Code Modulation) method.

The start signal generator 2 generates a start signal in response to the trigger signal transmitted from the pistol 1. Then, the generated start signal is transmitted to the start sound generator 3, the photo determination device 4, and the unauthorized start detection device 7. The start signal generator 2 wirelessly transmits a start signal to the start sound generator 3 through the leaky coaxial cable 9b.
The start signal generator 2 receives response information (processing completion response) returned from the start sound generator 3 and the photo determination device 4 that have received the start signal. Note that the start signal generator 2 receives the response information wirelessly transmitted from the start sound generator 3 through the leaky coaxial cable 9b.
The start signal generation device 2 generates a start NG signal and transmits it to the unauthorized start detection device 7 when all the response information cannot be received within a predetermined time.

The start sound generator 3 (3a to 3c) is arranged as close to the player (start block 6) as possible (for example, inside the course), and in response to the start signal sent from the start signal generator 2, A start sound (for example, a pistol sound) is generated. This start signal is wirelessly transmitted from the start signal generator 2 to the start sound generator 3 through the leaky coaxial cable 9b.
The start sound generator 3 transmits response information to the start signal generator 2 after confirming that the start sound has been generated normally. That is, the start sound generator 3 wirelessly transmits response information indicating completion of the start sound generation process toward the nearby leaky coaxial cable 9b, and returns the response information to the start signal generator 2 through the leaky coaxial cable 9b.
Note that the interval between the trigger (triggering operation) of the pistol 1 by the starter and the start sound is not a concern if the delay is at a level that cannot be determined by humans, so even if radio is used, there is no particular problem. Still, the trigger signal sent from the pistol 1 is sent to the start sound generating device 3 through the leaky coaxial cable 9a and the leaky coaxial cable 9b, and the start sound generating device 3 responds to the trigger signal to start sound. May be generated.

The photo determination device 4 includes a slit video device (video device using a line sensor) equipped with a camera, a timer, and the like, and is arranged in the vicinity of the goal point.
The photo determination device 4 is connected to the start signal generation device 2 by wire, and starts measuring the timer in response to the start signal sent from the start signal generation device 2. Then, when it is confirmed that the timer timing has started normally, response information is transmitted to the start signal generator 2.
Thereafter, when the player finishes, the photo determination device 4 combines (synchronizes) and records the time (time data) counted by the timer with the video (image) of the player taken by the camera.

The start signal strobe 5 is connected to the start signal generator 2 by wire and is arranged in the vicinity of the starter.
The start signal strobe 5 flashes the strobe when receiving the response information sent from the photo determination device 4 via the start signal generating device 2. That is, the start signal strobe 5 notifies the starter or the like by the light emission of the start signal strobe 5 that the photo determination device 4 has received the start signal and has started the timer timing normally.

The start block 6 (6a to 6i) includes, for example, a sensor that detects a load (pressure) applied to the rear of the foot plate, and is disposed at the start point.
The start block 6 generates a voltage signal (pressure signal) corresponding to the pressure detected by the sensor, and transmits the pressure signal to the unauthorized start detection device 7. That is, the start block 6 wirelessly transmits a pressure signal indicating the load applied by the competitor during the start operation to the nearby leaky coaxial cable 9c, thereby transmitting the pressure signal through the leaky coaxial cable 9c. Send to.
The start block 6 wirelessly transmits a pressure signal by the PCM method, as will be described later.

The unauthorized start detecting device 7 is connected to the start signal generating device 2 in a wired manner, and detects an unauthorized start (flying) of the player based on a pressure signal received through the leaky coaxial cable 9c.
For example, the unauthorized start detection device 7 receives a start signal sent from the start signal generator 2 and receives a pressure signal from the start block 6 through the leaky coaxial cable 9c. Then, the start timing is compared with the timing of the competitor's start operation (pressure change or the like) to determine the presence or absence of flying.
If it is determined that there is flying, the unauthorized start detection device 7 generates a recall signal and transmits it to the recall sound generator 8.
Further, even when a start NG signal is transmitted from the start signal generator 2, the unauthorized start detection device 7 generates a recall signal and transmits it to the recall sound generator 8.

The recall sound generation device 8 is connected to the unauthorized start detection device 7 by wire and installed on the course side.
The recall sound generation device 8 includes a speaker or the like, and generates a predetermined recall sound when receiving a recall signal sent from the unauthorized start detection device 7. That is, a recall sound is generated at the time of start NG or illegal start.

Hereinafter, wireless communication of digital signals converted into PCM will be described in detail.
First, wireless communication between the pistol 1 and the start signal generator 2 will be described with reference to FIG.
The pistol 1 incorporates a PCM encoder 11, a transmission unit 12, and the like. The PCM encoder 11 converts a trigger signal (ON / OFF) into a digital signal in real time, and the transmission unit 12 wirelessly converts the converted signal. Transmit continuously.
On the other hand, the start signal generator 2 incorporates a receiving unit 21, a PCM decoder 22, and the like, and the PCM decoder 22 reconverts the signal received by the receiving unit 21 in real time to restore the trigger signal.
Even if an error occurs if the trigger signal generated by such digital signal wireless communication has a sufficient length (a sufficient length that allows normal communication in consideration of the normal error frequency). Even information is communicated. Note that the trigger signal generated by the pistol 1 has a sufficient length, so that information can be transmitted even if an error occurs.

Next, wireless communication between the start block 6 and the unauthorized start detection device 7 will be described with reference to FIG.
The start block 6 incorporates a PCM encoder 61, a transmission unit 62, and the like. Similarly, the pressure signal is converted into a digital signal in real time, and the converted signal is continuously transmitted wirelessly.
On the other hand, the illegal start detection device 7 includes a receiving unit 71, a PCM decoder 72, and the like, and reconverts the received signal in real time to restore the pressure signal.
In such digital signal wireless communication, if data is lost due to normal error frequency (if the original signal is at a predictable level), it can be restored by interpolation, and information can be transmitted. For example, the unauthorized start detection device 7 interpolates information lost based on the received time. Since the signal at the start is data that rises to the right or descends to the right, it can be sufficiently restored by linear conversion.
If the lost time is long to some extent, the fraudulent start detection device 7 cannot normally determine the timing of the competitor's start operation, and therefore determines that there is an error and transmits a recall signal to the recall sound generation device 8. The game will be interrupted.

  The operation of the competition measurement system configured as described above will be described below with reference to FIGS. 3 and 4 are timing charts for explaining a series of operations of each device in the competition measurement system.

First, the operation when a communication error occurs on the apparatus side will be described with reference to FIG.
When the pistol 1 is operated by the starter, the pistol 1 generates a trigger signal and transmits it to the start signal generator 2 (T1).
Note that, as described above, the pistol 1 is a sufficiently long trigger signal when the trigger signal is wirelessly transmitted by the PCM method, so that information can be transmitted even if an error occurs.

The start signal generator 2 that has received the trigger signal generates a start signal and transmits it to the start sound generators 3a to 3c, the photo determination device 4, and the unauthorized start detection device 7 (T2).
It is assumed that the start sound generator 3b cannot receive a start signal due to a communication error.

The start sound generators 3a and 3c that have received the start signal generate a start sound (T3), and the photo determination device 4 that has received the start signal starts timing by a timer (T3).
Then, the start sound generators 3a and 3c, the photo determination device 4, and the unauthorized start detection device 7 return response information to the start signal generator 2 (T4).

Upon receiving the response information sent from the photo determination device 4, the start signal generator 2 transmits the response information to the start signal strobe 5 (T5).
The start signal strobe 5 that has received the response information flashes the strobe (T6).

  Since the start signal generator 2 cannot receive the response information from the start sound generator 3b even after a predetermined time has elapsed after transmitting the start signal, the start signal generator 2 generates a start NG signal and sends it to the unauthorized start detector 7 Transmit (T7). A start NG signal is also transmitted to the pistol 1.

The unauthorized start detection device 7 that has received the start NG signal generates a recall signal and transmits it to the recall sound generator 8 (T8). A recall signal is also transmitted to the pistol 1.
The recall sound generator 8 that has received the recall signal generates a recall sound (T9).
Further, the pistol 1 that has received the start NG signal and the recall signal notifies the starter of the start NG (communication error, etc.).

Next, the operation when the flying is found will be described with reference to FIG.
As in FIG. 3, the pistol 1 generates a trigger signal and transmits it to the start signal generator 2 (T1). In response to this, the start signal generator 2 generates a start signal and transmits it to the start sound generator 3 and the like (T2).

The start sound generators 3a to 3c that have received the start signal generate a start sound (T3), and the photo determination device 4 that has received the start signal starts timing by a timer (T3). Then, response information is returned to the start signal generator 2 (T4).
The start signal generator 2 transmits the response information sent from the photo determination device 4 to the start signal strobe 5 (T5), and the start signal strobe 5 flashes the strobe (T6).

And the start blocks 6a-6i generate | occur | produce a pressure signal sequentially according to the load added from each player, and transmit to the unauthorized start detection apparatus 7 continuously (T11).
Since the start block 6 wirelessly transmits the pressure signal by the PCM method as described above, even if there is data lost due to a normal error frequency, information transmission is possible by interpolation.

The unauthorized start detection device 7 determines the presence or absence of flying in the start block 6 based on the received start signal and the received pressure signal. That is, the fraudulent start detection device 7 compares the start timing based on the received start signal and the action timing of the athlete based on the received pressure signal to determine the presence or absence of flying. If it is determined that there is flying, the unauthorized start detection device 7 generates a recall signal and transmits it to the recall sound generator 8 (T12). A recall signal is also transmitted to the pistol 1.
The recall sound generator 8 that has received the recall signal generates a recall sound (T13).
Further, the pistol 1 that has received the recall signal notifies the starter of the occurrence of flying.

As described above, the above-described competition measurement system includes the pistol 1 and the start signal generator 2, the start signal generator 2 and the start sound generator 3, and the start block 6 and the illegal start detector 7. Even when the interval between the two is wireless, flying determination and the like can be performed normally.
As a result, it is possible to appropriately remove the harmful effects caused by wireless communication.

(Other embodiments)
In the above embodiment, the case where the digital signal converted to PCM is returned to the original signal on the reception side has been described. However, the digital signal may be used as it is without returning to the original signal.
For example, in the case between the pistol 1 and the start signal generator 2, as shown in FIG. 5A, the pistol 1 side wirelessly transmits the digital signal converted to PCM to the start signal generator 2 as described above. To do. On the other hand, the start signal generator 2 enables the CPU 23 to directly use digital data without providing the PCM decoder 22 described above.
In this case, the trigger signal can be acquired without changing the contents of the trigger signal by directly acquiring ON / OFF from the digital signal without returning the trigger signal.

  Further, as shown in FIG. 5B, the trigger signal may be directly converted into a digital signal by the CPU 13 without providing the PCM encoder 21 on the pistol 1 side.

Furthermore, a packet (wireless packet) may be used during wireless communication.
For example, in the case of between the start block 6 and the unauthorized start detection device 7, as shown in FIG. 6, the CPU 63 directly converts the pressure signal into a digital signal without providing the PCM encoder 61 on the start block 6 side. Convert. Then, instead of the transmission unit 62, the packet transmission unit 64 divides the data into packets and wirelessly transmits the digital data.
On the other hand, instead of the reception unit 71, the unauthorized start detection device 7 side restores the original digital data from the packet received by the packet reception unit 73, and the CPU 74 directly uses the digital data without providing the PCM decoder 72. It can be so.

At this time, the start block 6 side transmits a packet, which is a set of the quantized data and the sampled reference time (time synchronized with the entire system), to the unauthorized start detection device 7 side. Also good.
As a method of quantization, the amount of data to be transmitted may be reduced by quantizing when a certain time elapses or a certain amount of change is detected. Further, the number of bits of data to be transmitted may be reduced by quantizing the change from the previous time.
On the other hand, when the data is lost on the illegal start detection device 7 side, the lost information may be interpolated based on the received time.
Further, error control may be performed so that data is not lost.

In the above embodiment, the case where wireless communication is performed using the leaky coaxial cable 9 has been described, but wireless communication may be performed without using the leaky coaxial cable 9.
For example, as shown in FIG. 7, wireless communication may be performed using a wireless communication standard (for example, specific low power) that covers the entire system.
In this case, it is composed of two waves of the start signal generation device 2 system and the unauthorized start detection device 7 system.

In the above embodiment, the case where the measurement system for competition is applied to the track and field competition has been described, but the track and field competition is not limited to this and is optional.
For example, the present invention can be applied as appropriate to swimming competitions and speed skating competitions.

  As described above, according to the present invention, it is possible to appropriately remove the adverse effects caused by the wireless connection.

It is a schematic diagram which shows an example of a structure of the measurement system for competitions applied to embodiment of this invention. (A), (b) is a schematic diagram for demonstrating the mode of the radio | wireless communication of a digital signal. It is a timing chart for demonstrating operation | movement of the measurement system for competitions (when a communication error arises in the apparatus side). It is a timing chart for demonstrating operation | movement of the measurement system for competitions (when flying is discovered). (A), (d) is a schematic diagram for demonstrating the mode of another radio | wireless communication. It is a schematic diagram for demonstrating the mode of communication by a wireless packet. It is a schematic diagram which shows an example of a structure of the measurement system for competitions applied to other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pistol 2 Start signal generator 3a-3c Start sound generator 4 Photo determination device 5 Start signal strobe 6a-6i Start block 7 Unauthorized start detection device 8 Recall sound generator 9a-9c Leaky coaxial cable

Claims (6)

A start signal generating means for generating a start signal, a pressure signal generating means for sequentially generating an analog pressure signal corresponding to the pressure applied by the athlete at the start, and a determination means for determining whether or not the athlete is flying A competition measurement system in which wireless communication is performed at least between the pressure signal generation means and the determination means,
It said start signal generation means transmits the start signal generated in said determination means,
The pressure signal generating means converts the pressure signal of the analog sequentially generates the PCM (Pulse Code Modulation) scheme of the digital signal, continuously wirelessly transmitted to said determining means,
Said determining means, said start signal transmitted from the start signal generating means, the presence or absence of flying on the basis of the pressure signal of the analog obtained by restoring from said digital signal wirelessly transmitted by the pressure signal generating means When restoring the analog pressure signal from the digital signal, if there is information lost due to a communication error in the digital signal, the analog pressure signal is restored by interpolation.
Measuring system for competitions characterized by this. The determination means is based on the start signal sent from the start signal generation means and the analog pressure signal obtained by reconverting the digital signal wirelessly transmitted from the pressure signal generation means in real time. Determine the presence or absence of flying,
The competition measurement system according to claim 1, wherein: The determination means includes a start timing based on the start signal sent from the start signal generation means, and an athlete's operation timing based on the analog pressure signal acquired from the digital signal wirelessly transmitted from the pressure signal generation means. To determine the presence or absence of flying,
The competition measurement system according to claim 2, wherein: Trigger signal generating means for generating an analog trigger signal in response to the operation of the starter;
It said trigger signal generating means converts the trigger signal of the analog generated in the digital signal of the PCM method, and wirelessly transmitted to the start signal generating means,
The start signal generating means, responsive to said analog trigger signal obtained by reconverting the digital signal wirelessly transmitted from the trigger signal generating means, for generating said start signal,
The game measurement system according to claim 1, wherein the game measurement system is a game measurement system. Wireless communication between the pressure signal generation unit and the determination unit and between the start signal generation unit and the determination unit is performed via a leaky coaxial cable.
The game measurement system according to claim 1, wherein the game measurement system is a game measurement system. Includes a start signal generating device for generating a start signal, a start block for sequentially generating an analog pressure signal corresponding to the pressure applied by the competitor at the start, and an unauthorized start detection device for determining whether the competitor is flying A measurement method in a competition measurement system,
In the start signal generation device, a transmission step of transmitting the generated start signal to the unauthorized start detection device;
In the start block, the analog pressure signal sequentially generated is converted into a digital signal of the PCM method, and a wireless transmission step for continuously wirelessly transmitting to the unauthorized start detection device;
In the fraudulent start detection device, based on the start signal sent in the transmission step and the analog pressure signal obtained by restoring from the digital signal sent in the wireless transmission step, A determination step of determining presence or absence ,
In the determination step, when restoring the analog pressure signal from the digital signal, if there is information lost due to a communication error in the digital signal, the analog pressure signal is restored by interpolation.
Measurement wherein a call.

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