JP3173072B2 - Stopwatch device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a stopwatch device.

[0002]

2. Description of the Related Art In a car race or the like, every time a participating car makes a round of a course, each time an operation switch (hereinafter referred to as a lap switch) is operated as a tool for measuring a required time (hereinafter referred to as a lap time), the previous time is used. 2. Description of the Related Art There is known a stopwatch device in which an elapsed time from the operation of a lap switch, that is, a lap time can be known. However, in order to measure the lap time with such a conventional stopwatch device, it is necessary to operate the lap switch and wait for the race car to be measured to go out of sight and come back into view again now or now. However, there was an inconvenience that tension was continued and fatigue was easily felt.

[0003] In order to measure the lap time with more leeway, the applicant of the present invention, when measuring the lap time, drives the pointer so that the pointer thereafter makes one revolution with the lap time obtained at that time. Based on the guidelines, the present inventor has devised a stopwatch device which gives a rough indication of the measurement time of the next lap time, and has filed an application earlier (Japanese Patent Application No. Hei 2-8794).

[0004]

2. Description of the Related Art The stopwatch device described above
Although it has a certain effect and can be used conveniently, for example, even if the previous lap time is significantly longer than the normal lap time because the race car entered the pit during the last lap, the previous lap time Since the pointer was moved with reference to the above, there was a drawback that the racing car to be measured came into sight long before the pointer made a full circle, resulting in unexpected results. Was.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-mentioned conventional problems, and therefore, even if the previous lap of the measurement target is much longer than a normal lap, the possibility that a race-participating vehicle to be measured appears may be obtained. A stopwatch device that performs a display that indicates that there is a pointer, and then makes the movement of the pointer faster or slower for each lap time and thereby grasps the degree of variation in each lap time. The purpose is to provide.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides the following:
The pointer is indicated from the 0 (12) o'clock position (base point) to the 10 o'clock position on the dial to indicate how much time has elapsed with respect to the minimum lap time of the measurement object obtained so far,
After the minimum lap time has elapsed, the hands are moved at the time of the difference between the maximum lap time and the minimum lap time obtained up to that time to determine the degree of variation in the lap time at 10 o'clock on the dial. The gist of the present invention is that the display is performed by a pointer that moves between the position at 12 (0) and the position.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram showing a main part of the stopwatch device of the present invention. In FIG. 1, the stopwatch device includes a CPU 1 having a ROM, an input / output port, a clock generator, and the like.
A RAM 2 is connected to the CPU 1 via a bus. The output of the key input unit 3 is input to the CPU 1, and the output of the oscillation circuit 4 is frequency-divided by the frequency dividing circuit 5 to obtain a signal of 32 Hz, and this signal is input to the CPU 1. The signal from the output port of the CPU 1 is input to the display drive circuit 6, and the output of the display drive circuit 6 drives the liquid crystal segment of the display unit 7.

Signals from the other two output ports of the CPU 1 are input to a minute hand driving step motor A driving circuit 8 and an hour hand driving step motor B driving circuit 9, respectively. The output drives the step motor A10. The rotational force of the step motor A10 is transmitted to the minute hand 12 via the wheel train mechanism 11, and when the step motor A10 is driven by 180 steps, the minute hand 12 makes one revolution. Then, the step motor B13 is driven by the output of the step motor B drive circuit 9, and the rotational force of the step motor B13 is transmitted to the hour hand 15 via the wheel train mechanism 14. When the step motor B is driven by 180 steps, the hour hand 15 is driven. It makes one round.

In the ROM of the CPU 1, the minute hand 12, the hour hand 15,
A program for controlling the display unit 7 and the like is written.

The key input section 3 includes push-button keys SM and S
The key SM is a mode selection key, and each time the key SM is operated, the time mode and the stopwatch mode are alternately selected. The key S1 is a key for starting / stopping measurement in the stopwatch mode, and the key S2 is a key for measuring a lap time of a measurement target in the stopwatch mode. The key S3 is a function selection key in the stopwatch mode, and the keys S4 and S5 are keys for setting and changing a standard lap time, a warning display time, and the like.

FIG. 2 shows the structure of the RAM.
The mode register M is a register for storing a mode,
When 0 is stored, the clock mode for displaying the current time is designated by the minute hand 12 and the hour hand 15, and when 1 is stored, the stopwatch mode for measuring time is designated as a stopwatch. Time storage register B
T is a register for storing the current time, which is 1/3 in synchronization with a 32 Hz signal input from the frequency dividing circuit 5 to the CPU 1.
Two seconds are added.

The measurement time storage register ST is a register for storing the measurement time in the stopwatch mode, and the register Y is a register for storing the elapsed time since the last lap of the measurement object was taken. The minute hand current position storage register ATP is a register for storing the position of the minute hand 12, and the minute hand 12 makes one revolution in 180 steps as described above. In other words, it is configured to move the 1-minute scale in three steps.
A value of 79 is stored. Hour hand current position storage register B
TP is a register for storing the position of the hour hand 15, and the hour hand 15 makes one revolution in 180 steps as described above. That is, the scale of one minute is moved in three steps, and the values at 0 to 179 are stored with the position at 12:00 as 0. The minute hand movement position storage register ANP is a register in which the movement position is set by a numerical value from 0 to 179 when the minute hand is to be moved.
NP moves the hour hand from 0 to 17 when you want to move it.
This register is set with the numerical value of 9.

The register W is a register for storing data corresponding to the minimum (shortest) lap time of the lap times measured each time, and the register Z is the maximum (longest) lap time of each lap time. This is a register for storing data corresponding to the time difference from the minimum lap time. The register BL is a register for storing data corresponding to the standard lap time. The measurement start / stop flag register FR is a flag register which is set to 1 during measurement in the stopwatch mode and is set to 0 during non-measurement. is there.

A register LPA is a register used to detect the timing of moving the minute hand 12 in the stopwatch mode. A lap number storage register I is a register for storing the number of laps to be measured in the stopwatch mode, that is, a register LPA. This register stores the number of times the key S2 has been operated after the start of measurement. Register F
AS is a register that is set to 1 when the minute hand 12 comes to the 12 o'clock position during simulation of the previous lap time with the minute hand 12 in the stopwatch mode, and the register FAZ is the minute hand 1 in the stopwatch mode.
Minute hand 12 during simulation of previous lap time at 2
When the key S2 is operated and the next lap is taken before the time comes to the 12 o'clock position, 1 is set, and the minute hand 12 is rapidly advanced to indicate the next lap time by the minute hand 12, and is moved to the 12 o'clock position. This register is set to 0 when it comes. The lap time storage units M1 to M20 are registers for storing the lap times from the first measurement to the twentieth measurement.

FIG. 3 is a general flowchart of the operation of this embodiment. In the figure, the CPU 1 completes execution of a predetermined initialization routine and starts execution of a program shown in a general flowchart. In this routine, the CPU 1 is always in a standby state (step S1), and when a key operation of the key input unit 3 is performed, a key processing routine (FIG. 5) of step S8 and a display unit display processing routine (FIG. 5). Step S9)
And returns to step S1. Further, the frequency dividing circuit 5
Every time a 32 Hz signal from
A time keeping routine (step S2) is executed. Here, 1 / is stored in the time storage register BT that stores the current time.
The current time is updated by adding 32 seconds. Next, in step S3, it is determined whether or not the value of the data of the mode register M for mode identification (hereinafter simply referred to as the value of the register M) is 0 and the watch mode is set, and if the value of the register M is 0, The watch mode / motor drive processing routine (FIG. 4) in step S4 is executed, and the process enters step S5.

On the other hand, when it is determined in step S3 that the value of the register M is not 0, the process also proceeds to step S5. In step S5, it is determined whether or not the value of the register M is 1 and a stopwatch mode is set. If the value of the register M is not 1, the process branches to step S9. If the value of the register M is 1, the stopwatch process routine of FIG. 6 (FIG. 6) and the stopwatch mode motor drive process routine of step S7 (FIG. 6). After executing FIG. 7), the process proceeds to step S9. In step S9, the current time of the register BT is displayed in the watch mode (M = 0), and the measurement time and the warning of the measurement time storage register ST are displayed in the stopwatch mode (M = 1).

FIG. 4 is a flowchart showing the details of the watch mode motor driving process in step S4. First, in step S10, it is determined whether or not the minute hand position corresponding to the minute unit of the current time does not match the contents of the minute hand current position storage register ATP. If they match, the process proceeds to step S15. If they do not match, the process proceeds to step S15.
Step 11 is executed. In step S11, the step motor A for driving the minute hand is driven by one step. Next, the process proceeds to step S12, where 1 is added to the contents of the register ATP. The minute hand 12 and the hour hand 15 are shifted 180 steps (0 to 1
At 79) it is checked whether or not the register ATP has become 180. If the register ATP is not 180, the process proceeds to step S15. If the register ATP is 180, the process proceeds to step S14.
Is set to 0 to return to the initial state.

In step S15, it is determined whether or not the hour hand position corresponding to the hour unit of the current time does not match the contents of the hour hand current position storage register BTP. If they match, the watch mode motor drive process ends. If they do not match, step S16 is executed similarly to the control of the minute hand 12, and the step motor B for driving the hour hand is driven by one step. Then, the process proceeds to a step S17, where 1 is added to the contents of the register BTP. next,
In step S18, it is checked whether or not the register BTP has become 180. If the value of the register BTP is not 180, the watch mode / motor drive processing ends. When the value of the register BTP is 180, the value of the register BTP is set to 0 in step S19, and then the watch mode motor driving process is terminated. Therefore, when the minute hand 12 and the hour hand 15 do not point to the current time in the clock mode, the minute hand 12 and the hour hand 15 are fast-forwarded at 32 Hz until the minute hand 12 and the hour hand 15 point to the current time.

FIG. 5 is a flowchart showing details of the key processing in step S8. In this key processing, each time the mode selection key SM is operated, the operation mode between the clock mode and the stopwatch mode is alternately switched. First, in a step S40, it is determined whether or not the key SM is operated. If the key SM has not been operated, the flow advances to step S41 to determine whether or not the value of the register M is 1. If the value of the register M is not 1, the watch mode is set, so that key processing such as time setting in this mode is executed in step S67, and this key processing ends.

In the step S40, the key SM
Is operated, the flow advances to step S42 to determine whether or not the value of the register M is 0. That is, it is determined whether the previous mode is the clock mode or the stopwatch mode. If the value of the register M is 0, the process proceeds to step S43, and 1 is set in the register M.
44, enters the stopwatch mode initial processing, and stores the stopwatch measurement time storage register ST and measurement start / stop.
The stop flag register FR, the minute hand movement position storage register ANP, and the hour hand movement position storage register BNP are each set to 0. Thereafter, this key processing ends.
If the value of the register M is not 0 in step S42, the process proceeds to step S45, where 0 is set in the register M to set the clock mode, and the key processing ends.

When the value of the register M is 1 in the step S41, the key processing in the stopwatch mode is performed. In a step S46, it is determined whether or not the key S1 in the key input section 3 is operated. In the stopwatch mode, the key S1 is a key for controlling the start / stop of the measurement. When the key S1 is operated, the process proceeds to step S47, where whether the register FR is 0, that is, whether the stopwatch is being measured or not. Check whether or not. If the flag register FR is 0 and a non-measurement state is set, the measurement start / stop flag register FR is set to 1 and started in step S48, and then step S49 is executed. In step S49, 0 is set in each of the register LPA, the register Z, the lap number storage register I to be measured, the flag register FAS, the register FAZ, and the storage memories M1 to M20 of the lap time data to be measured, and then in step S50. The standard lap time data is set in the minimum lap time data storage register W, and this key processing ends. If the value of the register FR is not 0 and is being measured in step S47, it means that the end has been requested, so that step S5 is executed.
In step 1, the register FR is set to 0 to stop the measurement, and the key processing is terminated.

If the key S1 has not been operated in step S46, it is determined in step S52 whether or not the lap measurement key S2 on the key input section 3 has been operated. If the key S2 has not been operated, the process proceeds to step S66. If the key S2 has been operated, it is checked in step S53 whether or not the value of the register FR is 1, that is, whether or not the stopwatch is being measured. If the key S2 is operated during non-measurement, it is an erroneous operation and the key processing is terminated without doing anything thereafter.

When the key S2 is operated during the measurement, the lap number storage register I for the object to be measured is incremented in step S54. Next, in step S55, the elapsed time data from the last lap of the measurement target is written from the register Y to the lap number storage register MI in the storage area (I-th storage area) for that time. In step S56, 0 is set in the register Y, and in step S57, the data of the minimum lap time among the lap times measured from the first time to the present time is stored in the register W. Next, in step S58, it is determined whether the value of the register I is 2 or more, that is, whether or not the lap time difference can be calculated. If the value of the register I is smaller than 2 and the difference between the lap times cannot be calculated, the process proceeds to step S60. If the value of the register I is 2 or more, the process proceeds to step S59. The difference between the time and the minimum lap time is obtained, and the data of the difference is set in the register Z. Next, in step S60, the contents of the register FAS are checked to determine whether or not the minute hand has already reached the position of 0 (12:00). If the minute hand has already reached the 12 o'clock position, the current lap time is longer than the previous lap time, so the register F is set in step S61.
AS is set to 0, and the process proceeds to step S63. 12 minute hand
If the hour position has not been reached, the lap was taken earlier than the previous time, and the register FAZ is set to 1 in step S62. Next, in step S63, 0 is set in the register LPA, and in step S64, the register A
Set NP to 0. Then, in step S65, considering that one turn of the minute hand is 180 steps, the value of the register I is multiplied by 15 to calculate the number of steps for displaying the number of laps at each time position. Set to BNP. Thereafter, the key input process ends.

FIG. 6 is a flowchart showing the details of the stopwatch process in step S6, which is executed in the stopwatch mode. In this process, first, in step S100, it is determined whether or not the content of the measurement start / stop flag register FR is 1. When the register FR is not 1, the lap time is not being measured, so that nothing is performed, and the stopwatch process ends. If the register FR is 1, 1/32 seconds is added to the measured time storage register ST in step S101, and the process proceeds to step S102. In step S102, 1/32 second is added to the register Y to update the elapsed time since the last lap of the measurement object was taken.
At 3, it is determined whether or not the content of the register FAS is 0. That is, it is checked whether or not the minute hand has pointed to the 12 o'clock position. When the register FAS is not 0, that is, when the minute hand is 12
If the stop hand is pointing to the hour position, the stopwatch process is terminated. If the register FAS is 0, that is, if the minute hand is not pointing to the 12 o'clock position, step S1
At 04, the data is updated by adding 1/32 seconds to the LPA register. Next, in step S105, it is determined whether or not the lap time measured this time (data value of the register Y) is smaller than the minimum lap time (data value of the register W) among the lap times measured earlier. I do. If the lap time measured this time is shorter than the minimum lap time, the cycle of one step in which the minute hand 12 is moved from 0 o'clock to 10 o'clock at the previous lap time in step S106, that is, the register LPA The data value is 1/150 of the data value of the register W.
It is determined whether it is greater than or equal to (W / 150). When the data value of the register LPA is smaller than 1/150 of the data value of the register W,
This stopwatch processing is terminated. Otherwise, in step S107, 1/150 of the data value of the register W is subtracted from the data value of the register LPA, and the process proceeds to step S111.

On the other hand, if it is determined in step S105 that the lap time measured this time is not smaller than the minimum lap time among the lap times measured earlier, in step S108, It is determined whether or not the difference time (data value of the register Z) between the obtained maximum lap time and the minimum lap time is not zero. If it is zero and there is no difference between the lap times, this stopwatch processing is terminated. If there is a difference, the value of the data in the register LPA is 1/1 / (the value of the data in the register Z) in step S109. 30 (Z / 3
It is determined whether it is greater than or equal to 0).
If the data value of the register LPA is smaller than 1/30 of the data value of the register Z, the stopwatch process is terminated.
At step 110, 1/30 of the data value of the register Z is subtracted from the data value of the register LPA, and step S111
Proceed to.

In step S111, 1 is added to the minute hand movement position storage register ANP.
At 2, it is determined whether or not the minute hand movement position storage register ANP is 180. If the register ANP is not 180, the stopwatch process is terminated. If the register ANP is 180, 0 is set in the register ANP in step S113. Then, the stopwatch process ends.

FIG. 7 is a flowchart showing the details of the stopwatch motor driving process in step S7.
In step S20, it is determined whether or not the contents of the minute hand movement position storage register ANP match the contents of the minute hand current position storage register ATP. If both match, the process branches to step S28. If they do not match, the process proceeds to step S21, and the step motor A for driving the minute hand is driven by one step. continue,
In step S22, the contents of the register ATP are incremented. Then, the process proceeds to a step S23, where it is determined whether or not the numerical value of the data in the register ATP is 180. That is, it is checked whether or not the minute hand points to the position at 12:00. If the value is not 180, the process proceeds to step S28. If the value is 180, the content of the register ATP is set to 0 in step S24, and the process proceeds to step S25. In step S25, it is determined whether or not the content of the flag register FAZ for identifying whether or not the key S2 has been operated and the lap has been taken before the minute hand 12 points to the 12 o'clock position with respect to the measurement object. If the content of the register FAZ is not 1, the process proceeds to step S26, where 1 is set in the flag register FAS for identifying whether or not the minute hand has pointed to the 12 o'clock position within the previous lap time for the measurement object. Next, step S28
Proceed to. On the other hand, when the content of the register FAZ is 1, 0 is written to the register FAZ in step S27, and then the process proceeds to step S28.

In step S28, the contents of the hour hand movement position storage register BNP and the hour hand current position storage register BT are stored.
It is determined whether the contents of P do not match. When both are coincident with each other, the stopwatch motor driving process is terminated. When they are not coincident with each other, the process proceeds to step S29, where the step motor B for driving the hour hand is set.
Is driven one step. Subsequently, after the content of the register BTP is incremented in step S30, the stopwatch motor driving process ends.

FIG. 8 shows the percentage by which the lap time during the measurement corresponds to the minimum lap time among the lap times obtained from the first time to the previous time by the minute hand, and the minute hand is moved as part of the orbiting process. , Is a schematic diagram showing a process of the stopwatch mode to move at a speed corresponding to the time of the difference between the maximum lap time and the minimum lap time obtained so far,
FIG. 9 is a plan view schematically showing the movement of the minute hand of the stopwatch device of the embodiment. Referring to both figures, the key S
When the stopwatch mode is selected with M, the minute hand and the hour hand move to the 12 o'clock position (FIG. 9A), and the digital display unit 7 displays the data of the measurement time storage register ST, that is, 0.
Is displayed. When the key S1 is operated at the start of the race, the measurement starts.

If the standard lap time is stored in the standard lap time storage register BL immediately after the start, a drive pulse is supplied to the minute hand driving step motor A at a cycle of BL / 150 hours. Move to the state. The state shown in FIG. 9B corresponds to the standard lap time (memory register B
(Value of L) has passed 50%. Subsequently, the state shifts to the state shown in FIG. 9C, and the state shown in FIG. 9C indicates that 85% of the standard lap time has elapsed. That is, this is a state in which approximately 127 drive pulses are input in a cycle of BL / 150 hours (FIG. 8). Here, when the first lap is taken by pressing the lap switch S2, the current lap time is 0.85BL (0.85 times the standard lap time), so the minimum lap time is 0.85BL. It is stored in M1 of the lap time storage unit. Subsequently, the state shifts to the state shown in FIG. During this time, after the lap switch S2 is pressed and the lap is measured, the minute hand 12 moves at a maximum speed at which the minute hand 12 can move.
The movement to the 2 o'clock position is indicated by an arrow.
Then, when the minute hand 12 reaches the position at 12 (0) o'clock, the minute hand 12 is driven at a period of M1 / 150 based on the minimum lap time of 0.85 BL obtained this time.

If the second lap is not taken until the minute hand reaches the 10 o'clock position after passing through the state shown in FIG. 9 (e), the minute hand becomes 100/100 of M1 / 150 as shown in FIG. 9 (f). At the 10 o'clock position where% has elapsed, stop until the next lap is taken. When the next lap is taken, the second lap time data is stored in M2 of the lap time storage unit. Then, the minute hand moves from the state shown in FIG. 9 (f) to the 12 o'clock position at the maximum speed at which it can move to the state shown in FIG. 9 (g).

Here, the minimum lap time is the previous time (the first time).
Is the lap time measured. That is, since the maximum lap time is the second lap time (time data of M2),
The time between the maximum lap time and the minimum lap time is the difference between the two times (Z = M2−M1). Then, as described above, the minute hand 12 moves to the 12 o'clock position at the maximum speed at which it can move, and is thereafter driven at a period of M1 / 150. Thereafter, through the states shown in FIGS. 9 (h) and 9 (i), the minute hand 12 comes to the position of 10 o'clock, but if the third lap is not taken by that time, the minute hand will thereafter reach the maximum position. When the difference between the lap time and the minimum lap time, that is, when the third lap is taken, the minute hand 12 is set at a speed corresponding to the difference between the second lap time and the first lap time.
Moves until 12:00 with a cycle of "(M2-M1) / 30" and stops there.

The same applies to the measurement of the lap time from the fourth time onward. The minute hand moves from the 12 o'clock position at a period of 1/150 of the minimum lap time up to that time until the minute hand comes to the 10 o'clock position. If the next lap is not taken, the minute hand stops at the 10 o'clock position, and when the lap is taken, 1 / (1/1) of the difference between the maximum lap time and the minimum lap time from the 10 o'clock position. It is designed to move until 12:00 with 30 cycles.

[0034]

As described above in detail, according to the present invention, it is possible to display an indication of the measurement point of the next lap time of the object to be measured, and it is also possible to display at every lap time. After the minimum lap time out of the obtained lap times has elapsed, the movement of the hands is accelerated or slowed, so that it is possible to grasp the degree of variation in the lap time every time. Even if the previous lap is much longer than the normal lap, it is possible to avoid missing the timing of taking the lap.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a main part of a stopwatch device according to the present invention.

FIG. 2 is a diagram showing a configuration of a RAM.

FIG. 3 is a general flowchart showing an outline of the operation of the stopwatch device of the present invention.

FIG. 4 is a flowchart showing details of a watch mode motor driving process of FIG. 3;

FIG. 5 is a flowchart showing details of the key processing of FIG. 3;

FIG. 6 is a flowchart showing details of a stopwatch process of FIG. 3;

FIG. 7 is a flowchart showing details of a stopwatch mode motor driving process of FIG. 3;

FIG. 8 is a schematic diagram illustrating a measurement example in a stopwatch mode.

FIG. 9 is a plan view schematically showing the movement of the minute hand of the stopwatch device of the embodiment.

[Explanation of symbols]

 1 CPU 2 RAM 3 Key input unit 6 Display drive circuit 7 Display unit 12 minute hand 15 hour hand

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G04F 10/00

Claims (2)

(57) [Claims] 1. A stopwatch device which starts timekeeping by operating a start switch and obtains a lap time from a previous lap switch operation to a current lap switch operation for each lap switch operation. Detecting means for detecting the shortest lap time among the lap times measured so far each time the operated lap time is obtained; and rotating the pointer from a reference position to a predetermined position with the shortest lap time detected by the detecting means. A stopwatch device comprising: 2. A stopwatch device which starts timekeeping by operating a start switch and obtains a lap time from a previous lap switch operation to a current lap switch operation for each lap switch operation. A detecting means for detecting the shortest lap time and the longest lap time among the lap times measured so far each time the lap time is operated and obtained, and the pointer is moved from the reference position by the shortest lap time detected by the detecting means. A pointer movement control means for rotating to a predetermined position before one lap and rotating from the predetermined position to the reference position for a time corresponding to a difference between the longest lap time and the shortest lap time. Watch device.