EP0125624A1 - Vorrichtung zur elektromagnetischen Übertragung eines Vorganges in einer gestörten Umgebung - Google Patents

Vorrichtung zur elektromagnetischen Übertragung eines Vorganges in einer gestörten Umgebung Download PDF

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Publication number
EP0125624A1
EP0125624A1 EP84105246A EP84105246A EP0125624A1 EP 0125624 A1 EP0125624 A1 EP 0125624A1 EP 84105246 A EP84105246 A EP 84105246A EP 84105246 A EP84105246 A EP 84105246A EP 0125624 A1 EP0125624 A1 EP 0125624A1
Authority
EP
European Patent Office
Prior art keywords
time
event
pulses
pulse
transmitting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP84105246A
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English (en)
French (fr)
Other versions
EP0125624B1 (de
Inventor
Max Suter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Omega Electronics SA
Original Assignee
SSIH Management Services SA
Omega Electronics SA
SSIH EQUIPMENT SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SSIH Management Services SA, Omega Electronics SA, SSIH EQUIPMENT SA filed Critical SSIH Management Services SA
Priority to AT84105246T priority Critical patent/ATE30197T1/de
Publication of EP0125624A1 publication Critical patent/EP0125624A1/de
Application granted granted Critical
Publication of EP0125624B1 publication Critical patent/EP0125624B1/de
Expired legal-status Critical Current

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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C1/00—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people
    • G07C1/22—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people in connection with sports or games
    • G07C1/24—Race time-recorders
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F8/00—Apparatus for measuring unknown time intervals by electromechanical means
    • G04F8/08—Means used apart from the time-piece for starting or stopping same

Definitions

  • the invention relates to a device for transmitting electromagnetically in a disturbed environment a sporting event comprising in particular the start of a race in which several runners are involved, said event being defined by the time t at which it occurred.
  • the radio link known per se, has not only advantages, however. It is particularly affected by disturbances which can be significant enough to prevent a safe transmission of events. We are thinking here particularly of atmospheric disturbances or those caused by neighboring transmitters. Of such disturbances can prevent the transmission of an event that occurs only once. It will be understood that if this event is characterized for example by the time of arrival of a runner, as found in sports timing, this time will be irretrievably lost.
  • the lapse of time between the start of the first runner and the finish of the last runner is two hours for a given competition. During these two hours it is desired that the time given by the clock of the departure station and the time given by the clock of the arrival station do not diverge by more than one thousandth of a second. Under these conditions, the accuracy required of each of the clocks will be 0.001 24/2 - 0.012 seconds per day. Such precision can only be achieved by means of a sophisticated and expensive device which, moreover, must be stabilized in temperature from - 20 ° C to + 60 ° C.
  • the author's certificate SU-A-183 413 was cited in the search report.
  • This document proposes to improve the safety of radio transmission of the firing instant of a charge used in seismic research.
  • the system is based on the transmission of si charge-triggered, serial coded, coding changing every second. Thus, as soon as one of the signals is received correctly, the instant of ignition can be evaluated.
  • the present invention while remaining based on the idea of repeated transmission of events, proposes to remedy the drawbacks mentioned above by using the means which appear in the claims.
  • FIG. 1 is a block diagram of the transmitter according to the in vention.
  • This transmitter is generally located close to the event which, when it occurs at time t to be determined, closes the switch 1.
  • the switch 1 can be in the form of a light barrier or an electromechanical gate.
  • the electrical pulse emitted by the switch 1 switches the flip-flop 2 which then has a level 1 at its output Q.
  • the AND gate 3 receives on its first input the output signal of a time base 4 and on its second input the signal from the output Q of the flip-flop 2 so that the signal from the time base 4 can pass the AND gate 3 when the output Q is at level 1.
  • the clock pulses CP in coming from time base 4 and present at the output of the gate AND in turn control a counter 5 which delivers at its output 7 second pulses spaced from each other by predetermined and equal periods T. fixed by the counter 5
  • these second pulses represent a repetition of the first pulse, triggered by the event, and are defined in time by the intervals ⁇ T 1 , d T 2 , ... ⁇ T i , ... ⁇ T n which separate them. of the first impulse.
  • the frequency of the time base was chosen at 10 kHz.
  • the first of the second pulses following the first trigger pulse is spaced from the latter by one tenth of a second.
  • the second pulses are also spaced apart from one tenth of a second.
  • the counter 5 will transmit on its output 7 a pulse out of 1000 received at its input CP.
  • the event which occurred when the switch 1 was closed will be repeated every tenth of a second.
  • the transmitter 5 will produce, after having emitted ten pulses, a reset command by line 6 which will act on the counter itself and on the flip-flop 2.
  • the Q output will go to zero and block the AND gate 3.
  • the diagram in Figure 3 explains graphically how is organized what has been described above.
  • the signals of time base 4 are shown on line 9 of the diagram.
  • the event closing the switch 1 is represented by the rising edge of the pulse 8 shown in line 10 of the diagram.
  • the output Q of the flip-flop 2 goes to state 1 and remains there for a predetermined period T E , as shown in line 11 of the diagram.
  • the pulses of time base 4 then pass the AND gate 3 and are represented on line 12.
  • the pulses of line 12 and the state 1 of the output Q of the flip-flop 2 shown on line 11 are maintained until 'at the arrival of the rising edge of the pulse 16 (shown in line 13) which is the reset signal from line 6 of Figure 1.
  • These pulses attack the counter 5 which is arranged to not produce on its output 7 only a few of these 15 at predetermined and equal periods T i in order to obtain TE n in the end. T i as shown in line 14.
  • the encoder 20 also includes a UART (universal asynchronous receiver transmitter) circuit, for example of the RCA 1854 type, which transforms the parallel coded signal received from the divi 10 times a serial coded signal.
  • UART universal asynchronous receiver transmitter
  • the encoder 20 also includes a UART (universal asynchronous receiver transmitter) circuit, for example of the RCA 1854 type, which transforms the parallel coded signal received from the divi 10 times a serial coded signal.
  • the transmitter device of FIG. 1 is further supplemented by a transmitter system 21 whose carrier is radiated by the antenna 23. It will be noted that the carrier will generally be located in bands extending from 180 to 470 MHz or even in the "citizen-band" (27 MHz).
  • the carrier of the transmitter is modulated by the signal from the encoder 20.
  • FIG 2 is a block diagram of the event receiver emitted by the transmitter which has been discussed in connection with Figure 1.
  • the electromagnetic waves are picked up by the antenna 25 and the receiver itself 26 which brings to its output 36 a demodulated signal.
  • This signal is introduced into a decoder 27 which, on the one hand, selects from all the signals received the first undisturbed pulse (and therefore carrying complete information) and, on the other hand, assigns to said pulse a value of interval dT i in response to the distinctive sign which it carries.
  • This value is transmitted to an arithmetic unit 30 by the line 29.
  • the decoder 27 can be a UART circuit of the same type as that already mentioned with respect to the encoder 20.
  • the same arithmetic unit 30 receives via line 28 the signal from a master clock 35 giving for example the current time of day t h . Now knowing what time of day t the time interval ⁇ T i was transmitted, we can calculate the time of day t at which the event occurred by performing the arithmetic unit 30 by subtraction:
  • a first important advantage can be drawn from the device which has just been described: that of ensuring perfect security for the transmission of the event which, it should be remembered, takes place only once. Thus, the repetition of the data resulting from the event will allow at least one of the transmitted pulses to reach the receiver, pulse which once decoded will indicate precisely the time of day of the event.
  • time base 4 a simple non-thermocompensated quartz oscillator.
  • Such an oscillator is very cheap and its drift is around 100 seconds / day.
  • the transmission time of an event can last approximately one second. If during one day (86,400 seconds) the drift of the oscillator is 100 seconds, this same drift will only be 100 / 86,400, or 0.0012 seconds over the considered period of 1 second.
  • the first valid pulse received by the receiver is the tenth of a train of pulses each spaced by a tenth of a second, the error made will not exceed one thousandth of a second. This error will of course decrease if the pulse taken into account precedes the tenth pulse.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Near-Field Transmission Systems (AREA)
  • Selective Calling Equipment (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
  • Dc Digital Transmission (AREA)
EP84105246A 1983-05-13 1984-05-09 Vorrichtung zur elektromagnetischen Übertragung eines Vorganges in einer gestörten Umgebung Expired EP0125624B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84105246T ATE30197T1 (de) 1983-05-13 1984-05-09 Vorrichtung zur elektromagnetischen uebertragung eines vorganges in einer gestoerten umgebung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8308653A FR2545952B1 (fr) 1983-05-13 1983-05-13 Dispositif de transmission electromagnetique d'un evenement en milieu perturbe
FR8308653 1983-05-13

Publications (2)

Publication Number Publication Date
EP0125624A1 true EP0125624A1 (de) 1984-11-21
EP0125624B1 EP0125624B1 (de) 1987-10-07

Family

ID=9289166

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84105246A Expired EP0125624B1 (de) 1983-05-13 1984-05-09 Vorrichtung zur elektromagnetischen Übertragung eines Vorganges in einer gestörten Umgebung

Country Status (5)

Country Link
US (1) US4604621A (de)
EP (1) EP0125624B1 (de)
AT (1) ATE30197T1 (de)
DE (1) DE3466745D1 (de)
FR (1) FR2545952B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0334744A1 (de) * 1988-03-22 1989-09-27 DIAGNOSTICA STAGO (société anonyme) Vorrichtung zum Auslösen einer Schaltung zum Messen eines Reaktionsparameters zum Zeitpunkt des Verteilens einer Reagenzdosis durch eine Pipette
FR2806315A1 (fr) 2000-03-20 2001-09-21 Radiocoms Systemes Dispositif de chronometrage a transmission radio

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3618169B2 (ja) * 1996-05-16 2005-02-09 カシオ計算機株式会社 電子機器および当該電子機器を用いたシステム
DE10227451A1 (de) * 2002-06-20 2004-01-15 ASTRA Gesellschaft für Asset Management mbH & Co. KG Verfahren und Vorrichtung zur automatischen Zeitnahme bei sportlichen Massenveranstaltungen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2640187A (en) * 1949-06-13 1953-05-26 Olive S Petty Seismic surveying
US3651507A (en) * 1969-08-20 1972-03-21 John F Abbott Remote controlling device
FR2192334A1 (de) * 1972-07-11 1974-02-08 Seismograph Service Ltd
US4245334A (en) * 1979-06-29 1981-01-13 Erich Bieramperl Device for measuring and indicating the time between the reception of first and second airborne signals

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2143521B1 (de) * 1971-06-08 1974-09-27 Onera (Off Nat Aerospatiale)
DE2842450C2 (de) * 1978-09-29 1982-08-19 MITEC Moderne Industrietechnik GmbH, 8012 Ottobrunn Verfahren zur Messung der zeitlichen Abstände von jeweils zwei elektrischen Signalen
US4368987A (en) * 1980-06-25 1983-01-18 The United States Of America As Represented By The Secretary Of The Navy Conjugate-phase, remote-clock synchronizer
DE3277944D1 (en) * 1981-09-07 1988-02-11 Longines Montres Comp D System for the identification and the determination of the passing moment of a plurality of moving objects at a predetermined point of their travel path

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2640187A (en) * 1949-06-13 1953-05-26 Olive S Petty Seismic surveying
US3651507A (en) * 1969-08-20 1972-03-21 John F Abbott Remote controlling device
FR2192334A1 (de) * 1972-07-11 1974-02-08 Seismograph Service Ltd
US4245334A (en) * 1979-06-29 1981-01-13 Erich Bieramperl Device for measuring and indicating the time between the reception of first and second airborne signals

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0334744A1 (de) * 1988-03-22 1989-09-27 DIAGNOSTICA STAGO (société anonyme) Vorrichtung zum Auslösen einer Schaltung zum Messen eines Reaktionsparameters zum Zeitpunkt des Verteilens einer Reagenzdosis durch eine Pipette
FR2629203A1 (fr) * 1988-03-22 1989-09-29 Serbio Dispositif de declenchement d'un circuit de mesure d'un parametre de reaction au moment de la distribution d'une dose de reactif a l'aide d'une pipette-reservoir
FR2806315A1 (fr) 2000-03-20 2001-09-21 Radiocoms Systemes Dispositif de chronometrage a transmission radio
EP1139299A1 (de) 2000-03-20 2001-10-04 Radiocoms Systèmes Zeitmesseinrichtung mit Funkübertragung

Also Published As

Publication number Publication date
FR2545952A1 (fr) 1984-11-16
EP0125624B1 (de) 1987-10-07
DE3466745D1 (en) 1987-11-12
FR2545952B1 (fr) 1987-03-20
US4604621A (en) 1986-08-05
ATE30197T1 (de) 1987-10-15

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