JPS62109588A - Electronic starter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a starter used in track and field events, and particularly relates to an electronic starter.

[Prior Art] Conventionally, a pistol has been used as a starter [device] for track and field events, which has had the following drawbacks.

That is, it is dangerous because it uses gunpowder, and there have been problems with the storage of gunpowder. When in use, the paper detonator had to be replaced, which was troublesome.

■Due to weather conditions such as temperature, humidity, and atmospheric pressure, as well as weather conditions such as rain, there were cases where the explosion failed. Particularly, there is a problem in swimming competitions because it is easy to get wet. Also, if the weather conditions change, the volume and sound quality may become unstable.
The drawback was that it was difficult for players to start.

■The competition was not fair because the starting sound of the pistol (referred to as the pistol sound) did not reach the athletes at the first samurai. In other words, the speed of sound is 340 seconds per second at room temperature (15°C).
m, so 10m with the player right next to the starter.
With a player who was good at it, the arrival time of the pistol sound was about 1o.
There is a difference of 3 seconds. Like a 100m track race 1
In competitions where 1/000th of a second is competed, this difference was fatal. - Since the input to the measuring equipment was mechanical, there was a risk of measurement errors. Such accidents become a major problem in large matches such as international matches.

(ΦDuring flying, if the recall pistol misfired, the player's fatigue would increase, which had a serious effect on wins and losses, records, etc.).

Therefore, various plans have been made to digitize the starter [device] in order to deal with such drawbacks, but all of them have so far ended in failure.

The starter [device 1] used in track and field events, etc. fires a pistol with a blank gun outdoors, so there is no reverberation in the pistol sound. As shown in FIGS. 7 and 8, the waveform and frequency spectrum characteristics of such a pistol sound have an extremely fast rise characteristic and a very large acoustic output. decays very quickly. Therefore, if you record this as it is and output it from a speaker, the rise characteristics of the speaker (bad, and the acoustic output that a speaker can produce per force is small, so it produces a sound that is not similar to a pistol sound, generally known as a "pokon"). It can be heard as a sound.

This fact was finally discovered as a result of many years of research and experiments by the present inventors. The reason why previous attempts to synthesize pistol sounds have not been successful is because such a fact was overlooked.

Furthermore, the waveform, frequency spectrum characteristics, and sound pressure attenuation of pistol sounds vary depending on the type of pistol, the type of gunpowder, etc., and therefore the volume and sound quality vary; these facts also affect the pistol sound. The inventors of the present invention, who were one of the factors that made synthesis difficult, overcame these difficulties through a large amount of experiments and keen speculation and research based on the experiments.

[The problems to be solved by the invention, and therefore the objects of the invention, are as follows. That is, ■ To provide a safe starter that does not use gunpowder; ■ To provide a starter that has constant volume and sound quality regardless of weather conditions such as temperature, humidity, and atmospheric pressure, and weather conditions such as rain; ■
- Providing a starter that allows the starting sound to reach the athlete at sP-, etc. - Providing a starter that can perform accurate measurements - Providing a starter that prevents measurement errors - Reliably recall when flying These include providing a starter that makes a sound, and (2) providing a starter that makes a sound that makes it easy for the selection-f to start.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a start signal generating circuit which is connected to a human contact and receives a start signal outputted from the circuit, and which is connected to a human contact. It is connected to a recall signal generation circuit, and the recall signal outputted by the operation of the circuit is input, and it is also connected to a processing device, a measuring instrument, a start light generator, etc., and the start signal is transmitted to the processing device and other devices. an input/output interface circuit that is output to the device; a storage device that is connected to the processing device and stores the data of the start sound and the recall sound; a processing device that outputs the above-mentioned data as an output signal; a speaker that amplifies the output signal as appropriate and outputs a start sound or a recall sound consisting of an electronic sound; and a speaker that is connected to the input/output interface circuit and that An electronic starter characterized in that it is connected to a processing device and is equipped with the above-mentioned recall signal generator circuit that enables a signal input at the same time as a start sound is output, and a start that is connected to an input contact on one side. A start signal connected to a signal generation circuit and outputted from the circuit is manually inputted, and a recall signal connected to a recall signal generation circuit connected to the flying detection device and outputted by the operation of the circuit is inputted manually. , and an input/output interface circuit that is connected to a processing device, a measuring instrument, a start light generator, etc., and outputted to the start signal force measurement device and other devices, and the processing device. a storage device connected to and storing data of a start sound and a blade call sound, and activated by the start signal or recall signal,
A processing device that outputs the data stored in the storage device as an output signal to a digital-to-analog converter via an input/output interface circuit, and a processing device that is connected to the input/output interface circuit and converts the digital signal into an analog signal. A digital-to-analog converter that outputs
A speaker which outputs a start sound or recall g7 consisting of an electronic sound by appropriately amplifying the recording output signal, and a speaker which is connected to the input/output interface circuit and also connected to the processing device, and when the start sound is output. An electronic starter is provided, characterized in that it is equipped with the above-mentioned recall signal generation circuit which simultaneously makes signal input flexible.

[Embodiments] An electronic starter according to the present invention will be explained based on illustrated embodiments.

The electronic starter is comprised of a main unit, a pistol-type input contact device 2, and a speaker 3, which will be described in detail below.

The start signal generating circuit 4 of the main unit 1 includes a relay 5 for manual contact, an SR flip-flop 6 for waveform shaping, and a monostable multivibrator 7, and these circuits are connected in series in sequence. An input terminal 8 of the input contact relay 5 is connected to an input contact (not shown) of the pistol type input contact device 2. The output end of the monostable multivibrator 7 is connected to an input/output interface circuit 9.

The blade interface circuit 9 is connected to a processing device 10 made of a microprocessor so that it can input and output freely. A relay drive circuit 12 connected in series with an output contact relay 11 at the output end of the human-de-blade interface circuit 9
The other end of the branch line 13 which is connected to and operates between the output contact relay 11 and the relay drive circuit 12 is connected to the input end of the input/output interface circuit 9. 1
Reference numeral 4 denotes an output terminal, which is an output terminal of the J-f-19 relay 11, and is connected to a J1 device (not shown) such as a photo discriminator. The input/output interface circuit 9 is further connected to a start optical signal drive circuit 15 at another output end. Reference numeral 16 denotes an output terminal of the start light signal drive circuit 15, which is connected to a start light generator (not shown) such as a strobe light emitter.

The processing device 10 is connected to a storage device 17 for input and output. The storage device 17 stores data of a start sound, a recall sound, and a control program. This start sound, Ricoh J (, -7,'l, is the residual Q11.? of the pistol sound, which has a much lower sound pressure than the pistol sound, synthesized by a synthesizer, etc.), and other random waveform sounds, This is synthesized by layering these sounds for a much longer time than the pistol sound. The overlapping time is preferably 100m5 to 300ms. If the overlapping time is less than 100 m5, the volume will be too low and will generally be heard as a "pan" sound, which will not approximate the sound of a pistol, and there will be a problem in that the device will be large in order to amplify this sound. Furthermore, if the overlapping time exceeds 300 m5, the volume becomes too loud and is generally heard as a "gurn" sound, which is far from a pistol sound. Although the start sound synthesized in this way has a much lower sound pressure than the pistol sound, it is superimposed for a much longer time than the pistol sound, so it sounds louder to the human ear due to the reverberation effect. . In order to obtain stable electronic sounds, it is preferable that the component tones be stored using digital signals. By changing the memory contents of the storage device 17, it is possible to change the start sound and recall sound to arbitrary sounds. Further, the start sound and recall sound may be the same γf or may be different sounds.

The digital-to-analog converter 18 is connected to the output end of the input/output interface circuit 9. The output end of the digital-to-analog converter ratio is connected to a low-pass filter 18, a variable resistor 20, and a mixer 21, which are connected in series, respectively.

The output end of the mixer 21 is connected to a desired number of low frequency power amplifiers 2.
2 to a desired number of speakers 3.

The speakers 3 are installed at equal distances from each player.

The recall signal generation circuit 23 consists of an AND circuit 24 and a monostable multivibrator 25 connected to maintain stability of operation.The input terminal of the AND circuit 240 is connected to the monostable multivibrator 7, The output end of the multivibrator 25 is connected to the input end of the processing device 10. 26 and 27 are input terminals of the recall signal generation circuit 25, the manual input terminal 26 is connected to the input contact (not shown) of the pistol-type input contact device 2, and the automatic input terminal 27 is connected to the flying detection device (not shown). (omitted).

If the recall signal output from the recall signal generation circuit 23 is output immediately after the start, it will be difficult to distinguish between the recall sound and the start -77, so the recall signal is outputted after a certain period of time, for example, as shown in FIG. 2. A signal generation circuit 23 is configured. In other words, a recall signal input within 0.3 seconds after the start is not output immediately but is output after 0.3 seconds have elapsed, and a recall signal input manually after 0.3 seconds is output when manually input. It has become. Further, the configuration is such that the recall message is output only the first time.

Reference numeral 28 is an input terminal for audible sound connected to a microphone or other audio device (not shown) for transmitting voice, music, etc. of the starter [person]; a low frequency amplifier 29 and a variable resistor 3;
0 to the mixer 21.

Therefore, the circuit L is configured to be initialized after a predetermined period of time has elapsed, which is 5 seconds in this example.

[Operating principle and function] When the athlete arrives at the starting line, a starter saying "Ready" is inputted manually from the audible sound input terminal 28, and the low frequency amplifier 29, variable resistor 30, mixer 21 and low frequency The signal is output from the speaker 3 via the power amplifier n.

When the input contact (not shown) is closed by the starter [person] pressing the trigger of the pistol-type input contact device 2, the manual contact relay 5 is operated, and the signal is sent to the waveform shaping SR flip-flop. 6, where the waveform is shaped, and further transmitted to a monostable multivibrator 7, which outputs a fixed time pulse as a start signal to the input/output interface circuit 9. The processing device 10 is
It does not operate until a start signal is input to the input/output interface circuit 9. When the start signal is manually activated,
The processing device 10 checks the relay status 1 of the output contact relay 11 through the input/output interface circuit 9, and if there is no abnormality, sends a drive as a start signal to the relay drive circuit 12 and the start optical signal drive circuit 15. send a signal. After the input/output interface circuit 9 sends this drive signal, the input/output interface circuit 9 further sends the output contact relay 1.
Check the status of relay 1. At this time, the relay 1
If one drive is not performed in a normal state, a warning lamp is displayed by the display circuit 31 of the input/output interface circuit 9 in response to a signal from the processing device 10, and the main device 1 does not operate.

If the drive signal is normally output, the processing device 10 operates and retrieves the pre-start data stored in the storage device 17 as a digital signal. This digital signal is sent from the processing device 10 to the input/output interface circuit 9, and further outputted from the input/output interface circuit 9 to the digital-to-analog converter 18. At the same time, each drive signal is transmitted to the output terminals 14 and 16 and the start light generator, and the digital signal is sent to the digital-to-analog converter 18, which enables the operation of both devices. After unnecessary frequencies are removed by a low-pass filter 19, the signal is sent to a low-frequency power amplifier 22 through a mixer 21. Here, after the output is further amplified, it is outputted from the speaker 3 as a signal before the start of the pistol sound approximation. At this time, at the same time,
The drive signal causes the operable measuring instruments and start light generator to be activated.

When the pre-start signal is output, at the same time, the processing device 10 makes it possible to input a signal from the recall signal generation circuit 23, and also makes it possible to input a contact signal by suppressing the pistol-type input contact device 2 or a flying signal by operating the flying detection device. shall be. When any of the above signals is input to the recall signal generation circuit 23, a recall signal is generated by the AND circuit 24, and this recall signal is sent to the processing device 10 via the monostable multivibrator 25. Then, the processing device 10 retrieves the data of the recall sound stored in the storage device 17, and transfers it to the digital-to-analog converter 1 from the input/output interface circuit 9, as described above.
8, where the digital signal is converted into an analog signal, and then passed through a low-pass filter 19, a mixer 21, and a low-frequency power amplifier 22, and then outputted from the speaker 3 as a recall sound similar to a pistol.

In addition, in order to relieve the tension of the athletes before the start or after a flying contest call and until the restart, the audible sound input terminal 28
It is also possible to input more music and output it from the speaker 3.

As shown in Figures 5A and 6, the waveform and frequency spectrum characteristics output from the speaker 3 before the start are much smaller than those of the bisl, )L/, and K.
Moreover, since it is much longer, even if it is output from speaker 3, which has poor rise characteristics and small sound output, the reverberation effect makes it sound very similar to a pistol sound to the human ear. They are placed at an equal distance from the athletes, and unlike conventional starters, there is no difference in arrival time before the start due to distance from the starter, so the start signal is fair.

Furthermore, since the pre-start signal is output from the speaker 3, the volume can be adjusted according to the usage situation.

[Effects of the Invention] As described above, the electronic starter according to the present invention is safe because gunpowder is not used before starting or to generate Ricoh I, and there is no need to worry about storing gunpowder or replacing paper detonators. This has the effect of making things unnecessary. Also, since the output before the start is a 7tC consonant, temperature, humidity,
13, regardless of weather conditions such as atmospheric pressure or rain.
This has the effect of keeping the structure and order constant. Therefore, it can also be used for swimming competitions and the like. Furthermore, the sound before the start that is output is similar to a pistol sound, which has the effect of making it easier for the athlete to start. Additionally, you can adjust the volume before starting depending on the usage situation.

Since it becomes the reaching power v'P of the athletes before the start, it has the effect of ensuring the fairness of the competition and the public 41.

Since it is possible to electrically link the start signal and the meter, accurate measurements can be made.The start sound is output after confirming the operation of each signal circuit, which prevents measurement errors due to malfunction. It is also possible to reliably output a recall sound when flying.

Since the starting sound, recall sound, and starter sleeping sound can be output from the same speaker, there is no need for the starter to carry two pistols, one for starting and the other for recalling, and equipment and equipment can be saved. This has the effect of preventing unnecessarily increasing the size + LL, and making it easy to install and move because it is compact.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing the configuration of an embodiment of the electronic starter according to the present invention, Figs. Figure 6 is a graph representing the waveform and frequency spectrum characteristics of the start sound output from the same three-dimensional display, Figure 7 is a graph representing the waveform and frequency spectrum characteristics of the pistol sound, Figure 8 is a graph representing the waveform and frequency spectrum characteristics of the start sound output from is a graph representing the three-dimensional display frequency spectrum characteristics.

Claims (2)

[Claims] (1) One side is connected to a start signal generation circuit connected to an input contact, and the start signal output from the circuit is input, and the other side is connected to a recall signal generation circuit, and the recall outputted by the operation of the circuit. an input/output interface circuit into which a signal is input and which is connected to a processing device, a measuring instrument, a start light generator, etc., and outputs the start signal to the processing device and other devices; a storage device which is connected and stores data of the start sound and recall sound; a processing device which is activated by the start signal or the recall signal and outputs the data stored in the storage device as an output signal; and a processing device which outputs the data stored in the storage device as an output signal; A speaker that is appropriately amplified and outputs a start sound or recall sound consisting of an electronic sound, and is connected to the above input/output interface circuit and also connected to the above processing device, so that a signal can be input at the same time as the start sound is output. An electronic starter characterized by comprising the above-mentioned recall signal generation circuit. (2) One side is connected to a start signal generation circuit connected to the input contact and the start signal output from the circuit is input, and the other side is connected to a recall signal generation circuit connected to the flying detection device and the circuit is connected. an input/output interface into which a recall signal output by the operation of is input, and which is connected to a processing device, a measuring instrument, a start light generator, etc., and outputs the start signal to the processing device and other devices; a circuit, a storage device connected to the processing device and storing data of a start sound and a recall sound, and activated by the start signal or the recall signal,
A processing device that outputs the data stored in the storage device as an output signal to a digital/analog converter via an input/output interface circuit, and a processing device that is connected to the input/output interface circuit and converts the digital signal into an analog signal. a digital-to-analog converter that outputs a signal, a speaker that amplifies the output signal appropriately and outputs a start sound or a recall sound consisting of an electronic sound, and a speaker that is connected to the input/output interface circuit and connected to the processing device. An electronic starter, characterized in that it is connected to the recall signal generating circuit described above and enables a signal input at the same time as outputting a start sound.