EP0708388A2 - Chronographe et système de chronométrage - Google Patents

Chronographe et système de chronométrage Download PDF

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Publication number
EP0708388A2
EP0708388A2 EP95304354A EP95304354A EP0708388A2 EP 0708388 A2 EP0708388 A2 EP 0708388A2 EP 95304354 A EP95304354 A EP 95304354A EP 95304354 A EP95304354 A EP 95304354A EP 0708388 A2 EP0708388 A2 EP 0708388A2
Authority
EP
European Patent Office
Prior art keywords
clocking
stop watch
time
magnetic
magnetic sensor
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.)
Withdrawn
Application number
EP95304354A
Other languages
German (de)
English (en)
Other versions
EP0708388A3 (fr
Inventor
Shoichi Shinozuka
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0708388A2 publication Critical patent/EP0708388A2/fr
Publication of EP0708388A3 publication Critical patent/EP0708388A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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

Definitions

  • the present invention relates to a stop watch and a clocking system, and in particular, to a stop watch installed in an automobile for measuring a circuit lap time for each automobile and a clocking system employing this stop watch.
  • FIG. 6 One example of conventional systems for measuring the circuit lap time of an automobile is shown in FIG. 6.
  • the system comprise a sensor 71 installed in a circuit 60 for sensing the passage of an automobile 61 or 62 when it interrupts the light transmitted between a pair of a transmitter and a receiver, and a control section 72 for receiving a signal from the sensor 71 through a cable or radio to measure and display the time.
  • the control section 72 starts clocking in response to a start signal from the sensor 71 or a human operator, and measures and displays a lap time each time the automobile 61 or 62 passes the sensor 71.
  • Japanese Utility Model Application Laying Open No. 5-94794
  • Japanese Utility Model Application No. 4-43444 discloses a stop watch comprising a switch that opens and closes upon detecting a specified amount or more of magnetism; a clocking section that changes its operation mode in response to the operation of the switch by stopping clocking upon a next operation of the switch during clocking, resetting the time to retain the reset value upon a subsequent operation of the switch while the measured time is retained after clocking has ended, and starting clocking upon a subsequent operation of the switch while the value is maintained at zero; and a display section for displaying the time measured by the clocking section, as well as a clocking method using this stop watch wherein a magnet sensed by the switch is located at the start and goal point.
  • the conventional clocking system shown in FIG. 6 requires that the sensor and the control section be connected together via a cable or communicate with each other by radio, and the installation of such a cable or a radio transmitter and receiver requires costs and time. To inform a driver in an automobile of a measured time, the automobile must be stopped or another communication system must be used. Furthermore, to measure the lap times of a plurality of automobiles and the block travel time that is the time required by an automobile to pass through part of a course, the control section requires complicated operations, resulting in the need of a special operator.
  • the driver can measure the lap time alone, but cannot measure a plurality of continuous lap times or the block travel time.
  • the ability to follow up the passage of an automobile traveling at a very high speed is not reliable in terms of the operational speed of the switch.
  • a stop watch comprising a magnetic sensor for generating a signal upon sensing a predetermined amount of magnetism, a clocking section for receiving said signal and controlling the start and end of clocking in response to said signal, a storage section for storing a measured time, and a display section for displaying the stored time.
  • the magnetic sensor generates a signal upon detecting a predetermined amount of magnetism
  • the clocking section controls the start and end of clocking in response to the reception of the signal
  • the storage section stores the measured time, thereby enabling the driver to measure a plurality of continuous lap times and the block travel time.
  • the magnetic sensor comprises a Hall element.
  • a specified amount or more of magnetism is sensed accurately by the Hall element, even if an automobile with the magnetic sensor mounted thereon travels at a very high speed.
  • a clocking system includes a stop watch installed in an automobile which comprises a magnetic sensor for generating a signal upon sensing a predetermined amount of magnetism, a clocking section for receiving said signal and controlling the start and end of clocking in response to said signal, a storage section for storing a measured time, and a display section for displaying the stored time, and a magnetic member installed in a course on which the automobile travels.
  • the magnetic sensor installed in an automobile generates a signal upon detecting a predetermined amount of magnetism
  • the clocking section controls the start and end of clocking in response to the reception of the signal
  • the storage section stores the measured time, thereby enabling the driver to measure a plurality of continuous lap times and the block travel times.
  • the magnetic sensor comprises a Hall element, thereby enabling a specified amount or more of magnetism to be sensed accurately, even if an automobile with the magnetic sensor mounted thereon travels at a very high speed.
  • the magnetic member may be a magnetic bar comprising a magnet, thereby enabling the provision of various positions in which the magnetic sensor can be installed and various methods for installing the magnetic member.
  • the magnetic bars may be installed in a plurality of positions in the course, thereby enabling block travel times and lap times to be measured using the stop watch.
  • the stop watch comprises a magnetic sensor 2 for sensing magnetism and generating a specified signal upon detecting a specified amount or more of magnetism; a clocking section 1 having a means for receiving a signal generated by the magnetic sensor 2 and controlling the start and end of clocking each time the signal is received and a means for storing a measured time; and a display section for displaying the time stored in the clocking section 1.
  • the magnetic sensor 2 and the clocking sensor 1 are connected together by a cable, and the clocking section 1 and the display section 3 are formed integrally.
  • the magnetic sensor 2 has an appearance shown in FIG. 2A, and is attached mechanically to the bottom surface of an automobile with screws or bolts and nuts.
  • the magnetic sensor 2 has an antiseismic and perfectly waterproof structure so as to be mounted outside the body.
  • a substrate 21 having thereon a Hall element 22 for sensing magnetism is fixed inside a case 20 with epoxy resin, as shown in FIG. 2B.
  • a signal generated by the Hall element 22 is transmitted to the clocking section 1 through a cable 24.
  • the substrate 21 with the Hall element 22 mounted thereon is fixed to the bottom surface, the direction sensed by the sensor can be varied by changing the position and direction in which the substrate 21 is fixed.
  • the clocking section 1 and display section 3 comprises a liquid crystal display section 31 for displaying a time and the number of laps measured and stored, a power switch 32 for turning the power on and off, a start/stop switch 33 for alternatively enabling and disabling signals from the magnetic sensor, a memory call switch 34 for sequentially invoking measured times, and an indicator 35 that flashes for a specified period of time when receiving a signal from the magnetic sensor 2, as shown in FIG. 3.
  • a maximum of 99 measured times can be stored.
  • a power switch 32 is pressed to turn the power on, and a start/stop switch 33 is used to enable signals from the magnetic sensor 2.
  • a start/stop switch 33 is used to enable signals from the magnetic sensor 2.
  • an indicator 35 flashes for a specified period of time, and clocking is started.
  • the clocking section 1 measures and stores the time that has passed since the first sensing of magnetism, and the liquid crystal display section 31 displays the number of laps 1 and the time that has passed since the first sensing of magnetism, the time stored in the clocking section 1.
  • the clocking section 1 measures and stores the time that has passed since the second sensing of magnetism, and the liquid crystal display section 31 displays the number of laps 2 and the time that has passed since the second sensing of magnetism, the time stored in the clocking section 1. In this manner, a desired number of lap times are sequentially measured and stored.
  • the clocking is stopped, and the total accumulated time measured until the preceding lap is displayed on the liquid crystal display section 31.
  • the display section 3 displays the last lap time
  • the memory call switch 34 can then be pressed to sequentially display on the liquid crystal display section 31, all the measured lap times from the lap number 1 to the last lap together with the respective lap numbers.
  • the memory call switch 34 and the start/stop switch 33 are then pressed simultaneously for a specified period of time, all the lap times stored in the clocking section 1 are cleared. To measure the time again after all the lap times have been cleared, the above operation is repeated from power on. If the start/stop switch 33 is pressed again without clearing the stored lap times, clocking is restarted.
  • this embodiment is configured to automatically turn the power off if the device has not been operated for thirty minutes after clocking has been stopped.
  • the clocking system according to this invention comprises magnetic bars 50 to 52 consisting of magnets and located in three positions in a circuit 40 as magnetic members. Automobiles 41 and 42 that travel within the circuit 40 each carry the stop watch described in the above embodiment of the stop watch according to this invention. The configuration and operation of the stop watch are the same as in the above embodiment, and the description is thus omitted.
  • the magnetic bars 50 to 52 are preferably buried under the asphalt-surfaced road in the circuit 40, as shown in FIG. 5A. If, however, the magnetic sensor 2 is installed in a different position, the magnetic bars 50 to 52 may be installed on a side of the course of the circuit 40, as shown in FIG. 5B, or gate-like magnetic bars may be used, as shown in FIG. 5C.
  • the drivers in the automobiles 41 and 42 can measure and display the travel time for the block between the magnetic bars 50 and 51, the travel time for the block between the magnetic bars 51 and 52, and the travel time for the block between the magnetic bars 52 and 50.
  • each lap time that is equal to the accumulated block travel times can be displayed by pressing and holding the start/stop switch 33 for a specified period of time for each lap.
  • the above two embodiments have been described in conjunction with the stop watch configuration wherein the magnetic sensor 2 and the clocking section 1 are connected together via a cable and wherein the clocking section 1 and the display section 3 are configured integrally, the clocking section 1 and the magnetic sensor 2 may be configured integrally, or all the components may be constructed separately. Furthermore, the separate components may have a radio transmitter and receiver so as to communicate with each other.
  • the clocking section and the display section may be configured separately to communicate with each other by radio, with the display section installed both inside and outside the car body.
  • the use of radio improves the reliability of connection due to the absence of disconnection, but requires the provision of a plurality of channels used respectively for different automobiles and the transmission of identification signals from a sender which is then selected by a receiver, in order to deal with a plurality of automobiles traveling on the course.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
EP95304354A 1994-10-21 1995-06-21 Chronographe et système de chronométrage Withdrawn EP0708388A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP25677594A JPH08122463A (ja) 1994-10-21 1994-10-21 ストップウォッチ及び計時システム
JP256775/94 1994-10-21

Publications (2)

Publication Number Publication Date
EP0708388A2 true EP0708388A2 (fr) 1996-04-24
EP0708388A3 EP0708388A3 (fr) 1997-11-12

Family

ID=17297280

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95304354A Withdrawn EP0708388A3 (fr) 1994-10-21 1995-06-21 Chronographe et système de chronométrage

Country Status (5)

Country Link
EP (1) EP0708388A3 (fr)
JP (1) JPH08122463A (fr)
AU (1) AU2168495A (fr)
CA (1) CA2152124A1 (fr)
NO (1) NO952599L (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6956174B2 (en) 1993-11-16 2005-10-18 Formfactor, Inc. Tip structures
US20110106377A1 (en) * 2009-10-30 2011-05-05 Denso Corporation In-vehicle apparatus

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62174662A (ja) * 1986-01-27 1987-07-31 Advantest Corp ロジツク・アナライザ
JP2005315575A (ja) * 2004-04-26 2005-11-10 Nippon Seiki Co Ltd 計器の駆動装置
JP5789903B2 (ja) * 2013-11-14 2015-10-07 紀茂 稲井 情報携帯端末を利用した未知時間計測システム
CN104698825A (zh) * 2015-03-10 2015-06-10 长春理工大学 电子保修卡

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0443444U (fr) 1990-08-08 1992-04-13
JPH0594794U (ja) 1992-05-29 1993-12-24 正一 篠塚 ストップウオッチ及び計時方式

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2081937A (en) * 1980-06-26 1982-02-24 Hocken Redvers Albert A timing system
GB2117937A (en) * 1982-04-23 1983-10-19 Redvers Albert Hocken A timing system
FR2633740B1 (fr) * 1988-06-30 1992-10-02 Axter Sa Procede et dispositif de reperage d'un vehicule automatique
FR2656447B1 (fr) * 1989-12-26 1992-03-27 Omega Electronics Sa Dispositif de chronometrage de mobiles.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0443444U (fr) 1990-08-08 1992-04-13
JPH0594794U (ja) 1992-05-29 1993-12-24 正一 篠塚 ストップウオッチ及び計時方式

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6956174B2 (en) 1993-11-16 2005-10-18 Formfactor, Inc. Tip structures
US20110106377A1 (en) * 2009-10-30 2011-05-05 Denso Corporation In-vehicle apparatus
US8452491B2 (en) * 2009-10-30 2013-05-28 Denso Corporation In-vehicle apparatus

Also Published As

Publication number Publication date
NO952599D0 (no) 1995-06-28
NO952599L (no) 1996-04-22
AU2168495A (en) 1996-05-02
JPH08122463A (ja) 1996-05-17
CA2152124A1 (fr) 1996-04-22
EP0708388A3 (fr) 1997-11-12

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