JPH0972972A - Lap time measuring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To establish a system which can prevent chattering by invalidating a passage detection signal at the moment a lap time calculated becomes smaller than the possible shortest lap time. SOLUTION: In the measurement of lap time of a vehicle, a leader 11 is arranged previously at the position of a gate, at which the vehicle starts, or the like and after the reception of information from an ID card Ci of the starting vehicle, time is measured by a timer within a computer 13. When the vehicle returns to the position of the leader 11 again after one lap of running on a test course, information is received from the ID card Ci carried on the vehicle to calculate the lap time. The lap time calculated is transmitted to the ID card Ci involved through a controller 12 and the leader 11 from the computer 13 to be stored. When the value of the lap time calculated is smaller than the lap time obtained from the running of the vehicle at the possible maximum speed, the computer 13 invalidates a passage detection signal at the moment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lap time measuring system for measuring a lap time of a measuring object such as an automobile in a test course such as a rental test course or an event venue.

[0002]

2. Description of the Related Art FIG. 3 is a block diagram showing an example of a conventional lap time measuring system. Conventional system 20
Is an ID card D installed on each of multiple cars.
1 to Dn, a reader 21, a controller 22 connected to the reader 21, and a computer 23 connected to the controller 22.

The ID card Di has a communication section for transmitting information using microwaves and the like, and a storage section for storing information. The reader 21 has a predetermined shape (eg, bulbous shape)
It has an antenna part with detection range characteristics of
Information such as microwaves transmitted from the cards D1 to Dn is received. The controller 22 outputs the information for each ID card received by the reader 21 to the computer 23 together with the ID number. Computer 23
The lap time of the vehicle equipped with the ID card is measured based on the input information.

Specifically, the lap time of a vehicle is measured by
The reader 21 is arranged at a position where the vehicle starts, and after receiving information from the ID card Di of the starting vehicle, the time is measured by the timer in the computer 23.
The vehicle orbits the test course once and leads again to the leader 21.
ID when the vehicle returns to the
The lap time is calculated by receiving the information from the card Di. The calculated lap time is stored in the storage device inside the computer 23, and is also displayed outside by an electronic display device or the like to notify the audience or the driver of the vehicle.

[0005]

However, in the conventional lap time measuring system described above, when the vehicle bounces due to the unevenness of the road surface during communication between the ID card and the reader, a predetermined amount of the antenna portion of the reader 21 is provided. An abnormal lap time value is calculated by crossing the detection area having a shape twice within a short time (hereinafter, "chattering").
Say. ), There was a problem.

An object of the present invention is to provide a lap time measuring system which can prevent chattering.

[0007]

In order to solve the above-mentioned problems, the invention of claim 1 is a lap time measuring system for measuring an intermediate time for each revolution or constant distance in which one or a plurality of measurement objects travel. And one or more passage detecting means (11) for detecting that the measurement object has passed one or more reference positions and outputting a passage detection signal.
A lap time calculating means (13, step S4) for calculating a time interval between the passage detection signals at the first time and the second time subsequent thereto detected by the passage detecting means, and outputting the lap time as the lap time; When the lap time calculated by the lap time calculating means is smaller than the shortest possible lap time of the measurement object traveling at the maximum possible speed for each round or for each constant distance, the passage detection signal at the second time or at the time. And a control means (13, step S3) for invalidating.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail by way of embodiments with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a lap time measuring system according to the present invention, and FIG. 2 is a flowchart showing a processing procedure of the lap time measuring system according to the present embodiment.

The system 10 of this embodiment includes ID cards C1 to Cn mounted on a plurality of automobiles, respectively.
It comprises readers 11 and 14, a controller 12 connected to the readers 11 and 14, and a computer 13 connected to the controller 12.

The ID card Ci is provided with a communication section for transmitting and receiving information using microwaves and the like, and a storage section for storing information. This information storage unit, for example,
A ROM (read-only memory) that stores an ID number, a RAM (random write / read memory) that stores lap time information, which will be described later, and the like are provided. Readers 11 and 14
Has an antenna section having a detection range characteristic of a predetermined shape (eg, bulbous shape), and receives information such as microwaves transmitted from the ID cards C1 to Cn. The controller 12 outputs the reception information from each ID card received by the readers 11 and 14 and the transmission information to each ID card to the computer 13 together with the ID number. The computer 13 has a CPU (central processing unit) and measures the lap time of the vehicle equipped with the ID card based on the input information.

To measure the lap time of a vehicle, specifically,
The reader 11 is arranged at a gate position or the like (a position corresponding to a reference position) at which the vehicle starts, and after receiving information from the ID card Ci of the starting vehicle, the computer 1
The time is measured by the timer in 3, and when the vehicle orbits the test course once and returns to the position of the reader 11 again, the information is received from the ID card Ci mounted on the vehicle to set the lap time. calculate. The calculated lap time is transmitted from the computer 13 to the corresponding ID card Ci via the controller 12 and the reader 11,
It is stored in the storage unit in the ID card Ci.

Next, the processing procedure of the computer 13 will be described below with reference to the flowchart of FIG. First, the information signal including the ID number is transmitted from the ID card Ci of the vehicle that measures the lap time. This I
The information signal including the D number is received by the reader 11 and sent to the computer 13 via the controller 12 (step S1). The signal indicating that the ID number is received corresponds to the passage detection signal. Next, based on the timer in the computer 13, the current time at that time is T
It is input as new (step S2). This time Tnew
Corresponds to the second time. The time of the lap time measured immediately before Tnew is stored as Told (see step S5). This time Told is
It corresponds to the first time.

Next, the CPU in the computer 13 proceeds to step S3 to compare the time difference (Tnew-Told), that is, the current lap time with the upper limit lap time value TMAX to determine whether Tnew-Told <TMAX. Determines. The upper limit lap time value TMAX is the lap time of the test course when the vehicle travels at the maximum possible speed. For example, if the total length of the test course is 5000 meters and the maximum possible speed is 300 km / h, the upper limit lap time is about 60 seconds. This upper limit lap time corresponds to the shortest possible lap time value.

In step S3, the determination result is No.
, That is, if Tnew −Told> TMAX,
Since it is in a normal state, the CPU in the computer 13
In step S4, the value of Tnew-Told is stored as the current lap time value TLAP.

Next, the CPU in the computer 13 proceeds to step S5 and sets the time value Tnew to the time value Told. After that, the CPU in the computer 13 proceeds to step S6, compares the current lap time value TLAP with the previous best lap time value T BEST, and T BEST> T
Determine if it is a LAP. If the result is Yes, that is, if T BEST> TLAP, the current lap time value TLAP becomes the best lap time value, so the CPU in the computer 13 proceeds to the next step S7 and sets the current lap time value TLAP to TBEST And update and store.
Next, in step S8, the number of laps is updated, and in step S9, the best lap time value and the number of laps are transmitted to the corresponding ID card Ci. The ID card Ci, which has received the information, stores the information in the storage unit. The ID card transmits the information on the best lap time value and the number of laps stored in the storage unit to the reader 14 when the driver finishes all the laps and returns to the reference position such as the gate position. . Information from the reader 14
The information is sent to the computer 13 via the computer 12, and the information is externally displayed by an electronic display device or the like to notify the audience or the driver of the vehicle.

In step S6, if the result is No, that is, T BEST <TLAP, the best lap time value T BEST up to the previous time is valid.
The CPU in the computer 13 proceeds to step S8,
The number of laps is updated, and the best lap time value and the number of laps are transmitted to the corresponding ID card Ci in step S9.

On the other hand, if the result of the determination in step S3 is Yes, that is, if Tnew-Told <TMAX, it means that the current lap time value is smaller than the upper limit lap time, but this is possible. In this case, the CPU in the computer 13 returns to step S1 and repeats the processes of steps S1 and S2. As a result, the new current time value Tnew is set and the previous time value Tnew becomes invalid. An example of such a case is the above-mentioned chattering caused by a vehicle bouncing due to unevenness of the road surface. In this case, for example,
When the total length of the test course is 5000 meters and the maximum possible speed is 300 km / h, the upper limit lap time is about 60 seconds, but the false lap time due to chattering is less than 1 second, so it is clearly excluded as an abnormal value. be able to.

In the above, the reader 11 corresponds to the passage detecting means, and the computer 13 corresponds to the circulation time calculating means and the control means.

The present invention is not limited to the above embodiment. The above embodiment is an exemplification, and has substantially the same configuration as the technical idea described in the scope of the claims of the present invention. It is included in the technical scope of the invention.
For example, in the above embodiment, the best lap time value and the number of laps of a certain vehicle are transmitted to the ID card mounted in the vehicle and stored in the storage unit of the ID card. Information such as the best lap time value may be stored in the computer 13.

Further, an example of reading information such as the best lap time value of the vehicle stored in the ID card of the vehicle by the reader 14 provided at the gate position or the like after the end of the lap operation has been described. It does not matter if they are used together.

Further, an example in which the computer 13 invalidates the time Tnew at that time when the calculated lap time value is smaller than the lap time TMAX when the vehicle travels at the maximum possible speed is described. However, the passage detection signal itself at that time may be invalidated.

As the lap time, one round of the course has been described, but it may be an intermediate time for each predetermined distance (section). In this case, the reader 11 may be provided for each predetermined distance (section). The control means is the computer 13
However, the delay circuit having the delay time smaller than the shortest possible lap time is provided, and after the passage detection signal at the first time is detected, When the passage detection signal at time 2 is detected, a circuit may be provided to invalidate the time or signal. The passage detecting means may be inside the vehicle. Further, the lap time detecting means and the control means may be provided in the ID card, and finally, the calculation result may be fetched into the computer 13 by the reader 14. Further, although the passage detecting means has been described as an example of detecting by microwave, it may be detected by other non-contact means such as light. Although the measurement target has been described as an example of a vehicle, the measurement target can be similarly applied to an animal or a ship.

[0023]

As described above, according to claim 1, when the lap time calculated by the lap time calculating means is smaller than the shortest possible lap time when the vehicle travels at the maximum possible speed, The control means
Since the second time at that time or the overpass detection signal thereof is invalidated, even if chattering occurs, the time value after chattering is corrected to a new normal time value, and an abnormally small lap time value. Will not be output.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a lap time measuring system according to the present invention.

FIG. 2 is a flowchart showing a processing procedure of the lap time measuring system of the present embodiment.

FIG. 3 is a block diagram showing an example of a conventional lap time measuring system.

[Explanation of symbols]

 10,20 Lap time measuring system 11,14,21 Reader 12,22 Controller 13,23 Computer C1-Cn, D1-Dn ID card

Claims (1)

[Claims] 1. A lap time measuring system for measuring an intermediate time for each round or a constant distance in which one or a plurality of measurement objects travel, wherein the measurement object has passed one or a plurality of reference positions. One or a plurality of passage detecting means for detecting and outputting a passage detecting signal; and calculating a time interval between the passage detecting signals at the first time and the second time next detected by the passage detecting means. ,
A lap time calculating means for outputting as a lap time, and if the lap time calculated by the lap time calculating means is smaller than the shortest possible lap time traveled by the maximum possible speed for each one round or for each constant distance of the measurement object, the A lap time measuring system including a control means for invalidating the passage detection signal at time 2 or at that time.