JPH10186063A - Clock device for competition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the errors of measured values by synchronizing the clocks of clock devices of multiple slave units with the synchronization signal sent from a master unit. SOLUTION: The start signal input section 13 of a clock system 50 gives a counting instruction when a competition is started, and the laps and splits of players are counted by this signal. An I/O signal section 14 is connected to a CPU via a player signal reception section 12 and a data memory section 11, and it is connected to a player counter 20 and the data memory section 11 via a player selecting signal section 16. An I/O synchronization signal section 15 is connected to the player counter 20 via a synchronization signal output section 21, and the signal of a frequency divider 18 is connected to the I/O synchronization signal section 15 via a synchronization memory section 23 and a synchronization signal reception section 24. The synchronization signal from the I/O synchronization section 15 of a master unit is received by the synchronization signal reception sections 24 of multiple slave units and stored in the synchronization signal memory sections, and the internal counters of the slave units are reset for counting to correct the phase shifts of clocks.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a configuration of a timepiece for competition, and more particularly to a configuration related to timing of a parent device and a child device of the timekeeping device.

[0002]

2. Description of the Related Art In general, a timing device for a game is required to have various structures and functions according to each mode of the game. For example, the following competition timing device is often used. (1)
Track and field athletics: a pass detector that detects the athlete's running on each course in a competition that goes around the stadium, a start system that instructs timing at the start of the competition, and a signal of the athlete A competition timing device consisting of a lap, split, etc. timing system. (2) Skating competitions: There are in-course and out-course competitions that go around the stadium, and competitors must run on the in-course and out-course alternately according to the number of laps. , A course changer that switches the runner according to the number of laps of the runner who alternates between the in-course and the out-course, and a course switch that starts timing when the competition starts A competition timing device comprising a plurality of skating competition timing devices each comprising a system and a timing system for timing an athlete's lap, split or the like based on the signal of the start system. (3)
Swimming Competition: There are multiple sets of courses in a reciprocating round of the course of the stadium, and a pass detector that detects the passing of competitors in each round trip, and a start system that instructs timing at the start of the competition. A competition timing device including a plurality of timing devices each configured with a timing system for timing an athlete's lap, split, or the like based on the signal of the start system.

The basic structure is the same in any of the above-mentioned athletic timekeeping devices. Hereinafter, the related art will be described with reference to the drawings. FIG. 3 shows a conventional competition timing device 30.
FIG. FIG. 4 is an explanatory diagram of a system between a master unit and a plurality of slave units in a conventional clocking system. In FIG. 3, the basic configuration of the competition timing device 30 includes a start system 34, a competitor's passage detector 31, a course switching device 32, a timing system 33, a result system 37, a large display 35, and a monitoring display 36. Be composed. In the above-described competition timing device 30, the running course of the competitor is composed of an in-course and an out-course, except for a skating competition in which the course is alternately switched (1) a land track competition, and (3) swimming. In a competition, the course switching device 32 is unnecessary.

[0004] In FIG. 4, a competition timing device 30 (in this case, a parent device 39) having a timing system 33 for comprehensively timing and displaying a plurality of sets of competitions and a plurality of child devices 40.
are basically the same as described with reference to FIG. 3, and various bus lines 38 are connected from the parent device 39 to the child devices 40a, 40b.

[0005] In FIG. 3 and FIG.
From 4, the start signal is transmitted to the timing system 33, the passage detector 31, and the result system 37 of the master device 39 and reset, and at the same time, the slave device 40 a as a time measurement start signal is output.
40b are transmitted via various bus lines 38. The timed result is sent to the large display 3 via the result system 37.
5. Displayed on the monitor display 36. In this case, child unit 4
In the timing of 0a, 40b,...
The detection of a competitor, a lap, a split time, and the like are measured and clocked by a clock from a standard signal provided in 40b.

[0006]

However, the following problems have occurred in the conventional competition clock device 30. The master unit 39 is provided with a high-precision standard oscillator, and the timekeeping start signal is accurately output to the slave units 40a and 40b.
Is transmitted to each of the slave units 40a, 40b,... Because the clocking is performed from the respective standard signals provided in the slave units 40a, 40b,.
a, 40b... due to variations in the switching of the semiconductor of the timekeeping system, deteriorates over a long time, and in the worst case, loses digits, and the timekeeping accuracy of the competition timekeeping device 30 may greatly vary. Was. Further, there is a defect that the above-described timekeeping system cannot be efficiently operated and stabilized depending on the timing at which the timing detection signal is used to detect the passing of the competitor and the state of the competitor. Further, the conventional competition timing device has a drawback that the basic configuration of the competition timing device is complicated in order to cope with various competitions.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to provide a highly versatile competition timepiece which can be applied to various competitions composed of a parent device and a plurality of sets of child devices while eliminating the above-mentioned disadvantages. In addition to proposing, it is intended to improve measurement accuracy and to operate efficiently. The competition timing device of the present invention includes a pass detector that detects the running of an athlete on each course in a competition that is performed around the stadium, a start system that instructs timing at the start of the competition, In a competition timing device composed of a timing system for timing the lap, split, etc. of an athlete by a signal, in the synchronization signal sent from the parent device, synchronize the clock of each timing device of a plurality of sets of child devices, It is characterized in that the error of the measured value of each timing device is reduced.

[0008] In addition, the competition timing device of the present invention has an in-course and an out-course in a competition that goes around a stadium, and the in-course and the out-course must be used alternately according to the number of laps. A passage detector that detects the running of the competitor on each course, a course changer that switches the runner according to the number of laps of the competitor who alternates between the in-course and the out-course, and A skating competition timepiece comprising a plurality of sets of a skating competition timepiece composed of a start system for instructing timing at the same time as the start and a timing system for timing laps, splits, etc. of competitors by signals of the start system. By synchronizing the clocks of the respective timepieces of the plural sets of slaves with a synchronization signal sent from the master, errors in the measured values of the respective timepieces are reduced. Characterized in that it was.

[0009] Further, the competition timing device of the present invention has a plurality of courses in a competition performed by reciprocating the course of the stadium, and a passage detector for detecting the passage of the competitor during the reciprocation of each course; In a competition timing device comprising a plurality of timing devices each including a start system for instructing timing at the same time as the start of a competition, and a timing system for timing a lap, a split, etc. of an athlete by a signal of the start system, The clock of each of the timepieces of a plurality of sets of slaves is synchronized with a synchronization signal sent from the device to reduce errors in the measured values of the respective timepieces.

[0010] Still further, in the competition timing device of the present invention, a synchronization signal transmitted from the timing device of the parent device to the timing device of the child device is used as a reference signal, and detection of an athlete is performed within the interval of the reference signal. It is characterized by performing.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 shows a main configuration diagram of a timekeeping system 50 of a competition time device according to the present invention. FIG. 2 is an explanatory diagram of signals between the parent device and the child device according to the present invention. It should be noted that the competition time apparatus of the present invention has the same configuration as that of the prior art and the main parts are the same. In FIG. 1, the start signal input unit 13 of the timing system 50 is connected to the CPU 10. The I / O signal section 14 is a player signal receiving section 12,
It is connected to the CPU 10 via a data storage unit 11.
The I / O signal section 14 is connected to an athlete counter 20 via an athlete selection signal section 16 and a data storage section 11
Connected to. The I / O synchronization signal section 15 is connected to the player counter 20 via a synchronization signal output section 21. As an example, the oscillation frequency of the high-stable crystal oscillator 17 is 12.28.
Frequency 7.8 obtained by dividing 0 MHz by frequency divider 18
The 6 kHz signal is transmitted to the CPU 10 via the synchronization unit 19. A signal from the frequency divider 18 is connected to the I / O synchronization signal unit 15 via a synchronization storage unit 23 and a synchronization signal reception unit 24.

In the competition timekeeping device of the present invention, there are a plurality of timekeeping systems 50, one of which must be a parent device and the other a child device. A synchronization signal is output from the synchronization signal section 15 of the parent device (via the bus line 38 shown in FIG. 4). The slave unit receives the synchronization signal in the synchronization signal receiving unit 24, stores the synchronization signal in the synchronization storage unit 23, resets an internal counter (not shown) of the slave unit, performs a timing process, and Correct the phase shift of the counter clock.

[0013] Since the timepiece for competition of the present invention uses a parent device and a plurality of child devices, if data of the child device are transmitted to the parent device in parallel, the number of communication lines increases, which is inconvenient for maintenance. The transmission of data from the child device to the parent device is serially transmitted, synchronized, and the parent device performs parallel conversion on the above-described data and measures time. This is performed by the external operation switch 22.

In FIG. 2, a clock signal 41 is transmitted from the frequency divider 18 shown in FIG. 1, passes through a synchronous storage unit 23 and a synchronous signal receiving unit 24, and from the I / O synchronous signal unit 15 to the slave unit. Transmitted as a synchronization signal. At this time, in order to reduce the noise by lowering the impedance of the transmission / reception line,
If the voltage of the clock signal 41 to be transmitted is set to, for example, 2.5 V and the voltage of the return clock signal 41 is set to 5 V, accurate transmission / reception is possible even if the parent device and the child device are separated by several hundred degrees. The clock signal 41 serves as a reference signal for the athlete's passage detector. When the clock signal 41 stops, a reset signal is issued to reset each counter and cue the athlete's passage detector. . Hereinafter, a swimming competition will be described as an example.

In FIG. 2, an I / O control signal 4
Reference numeral 2 denotes a signal for stopping the clock signal 41 for a certain period to check the state of each course. One signal is checked by four of these signals.
Consists of a block course. “0 block” is for start signal control, and “1” to “10” are for course control. The I / O clock 43 is an output of each detector, and one of the I / O signal units 14 from the I / O signal unit 14 to the CPU 10 via the athlete receiving unit 12 and the data storage unit 11, and the other to the athlete selecting unit 16. The data is transmitted to the data storage unit 11 via the player counter 20 and to the CPU 10 via the synchronization unit 19. Since the I / O clock 43 returns with a delay, data is stored in a stable state.
The phase signal is advanced from the clock 43, and after the data sent from each course is securely stored in the data storage unit 11 by the I clock 44, the course signal is transferred to the CPU 10. The content of the I / O control 42 indicates a detection signal of the competitor, 47a: a contact state of the competitor with the touch plate, 47b: presence / absence signal of the touch, 47c: start stand signal, 47d: manual signal (grip) Switch signal)
It is.

The period 46 covering the course number 49 of the clock signal 41 is set to 1 ms, and time synchronization of the slave unit is performed. The D set signal 45 is a signal transmitted from each course, which is reliably stored as an I clock signal 44, and after which the I / O control signal 42 indicates 47a,
47b, 47c and 47d are transferred to the timing system. The detection reset signal 46 of each course is transmitted every 1 ms.

The description so far has focused on the swimming competition, but in the skating competition, for example, the course 49 "0" course is in-course, the "1" course is out-course,
"2" to "4" courses can be applied as short tracks. According to the configuration of FIG. 3, the runners are switched (by the course switch 32 of FIG. 3) according to the number of laps of the competitor who runs alternately with the in-course.
The same measurement as that for the swimming competition is performed via the competitor selection unit 16 and below.

[0018]

According to the timing device for competition of the present invention, in land track competitions, skating competitions and swimming competitions, the clocks of the respective timing devices of a plurality of sets of slave units are synchronized by a synchronization signal sent from the parent unit. Therefore, the error of the measurement value of each of the timing devices is reduced, and the measurement accuracy is greatly improved.

According to the timepiece for competition of the present invention,
In track and field competitions, skating competitions, and swimming competitions, a synchronization signal transmitted from the timing device of the parent device to the timing devices of a plurality of child devices is used as a reference signal, and detection of an athlete is performed within the interval of the reference signal. As a result, the system is simple, the operation efficiency of the timepiece for competition is high, and malfunction does not occur.

Further, according to the competition timekeeping device of the present invention, it can be used for a track and field competition, a skating competition, a swimming competition, and the like without changing the basic configuration of the competition timekeeping device, so that it is extremely versatile.

[Brief description of the drawings]

FIG. 1 is a timing system 5 of a timepiece for competition according to the present invention.
0 shows a main configuration diagram.

FIG. 2 is an explanatory diagram of signals between a parent device and a child device according to the present invention.

FIG. 3 is a basic configuration diagram of a conventional competition clock device 30.

FIG. 4 is an explanatory diagram of a system between a master unit and a plurality of slave units in a conventional timekeeping system.

[Explanation of symbols]

 Reference Signs List 10 CPU 11 Data storage unit 12 Athlete signal reception unit 13 Start signal input unit 14 I / O signal unit 15 I / O synchronization signal unit 16 Athlete selection unit 17 Crystal oscillator 18 Frequency divider 19 Synchronization unit 20 Athlete counter 21 Synchronous signal output unit 22 External operation switch 23 Synchronous storage unit 24 Synchronous signal receiving unit 41 Clock 42 I / O control 43 I / O clock 44 I clock 45 D set 46 Reset of each course detector 47a, 47b, 47c, 47d Detection signal 48 Synchronization signal interval 49 Course number 50 Timing system

Claims (4)

[Claims] 1. A pass detector for detecting running of an athlete in each course in a competition circulating around a stadium, a start system for instructing timing at the start of the competition, and an athlete based on a signal of the start system. Lap, split, etc. in a competition timing device, which synchronizes the clocks of each set of child devices with a synchronization signal sent from the parent device, An athletic timing device characterized in that errors in measured values are reduced. 2. There are an in-course and an out-course in a competition that goes around the stadium, and in the competition in which the in-course and the out-course must be used alternately according to the number of laps, the athlete runs on each course. A passage detector for detecting,
A course switcher that switches the runner in accordance with the number of laps of a competitor who runs alternately on an in-course and an out-course, measures time, a start system for instructing time measurement simultaneously with the start of the competition, and a signal of the start system A skating competition timing system consisting of a plurality of sets of skating competition timing units consisting of a timing system for timing the laps, splits, etc. of the competitor by using the synchronization signal sent from the parent unit A timepiece for competitions, wherein the clocks of the timepieces are synchronized to reduce errors in the measured values of the timepieces. 3. There are a plurality of sets of courses in a reciprocation of a course of a stadium, and a pass detector for detecting the passing of an athlete in the reciprocation of each course, and a start instruction for timing at the same time as the start of the competition. In a competition timing device composed of a plurality of sets of a timing system composed of a system and a timing system for timing a lap, a split, etc. of an athlete based on a signal of the start system, a synchronization signal transmitted from a master unit is used for a plurality of timing devices. A timepiece for competitions, wherein the clocks of the respective timepieces of the set of slaves are synchronized to reduce errors in the measured values of the respective timepieces. 4. The method according to claim 1, wherein a synchronization signal transmitted from the timing device of the master device to the timing device of the slave device is used as a reference signal, and an athlete is detected within an interval of the reference signal. The competition timing device according to claim 2 or 3.