JP2006098073A - Measurement equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem wherein an anxiety about a fall of battery voltage may cause such incovenience on measurement that when the voltage falls down to the voltage transition to a charge warning voltage, a chronograph thought to operate normally suddenly stops against intention of a user. <P>SOLUTION: The voltage detection means detects: a 1st action state representing the voltage state in which the watch is capable of normal action; and a 2nd action state of the voltage lower than that the 1st action state and a charge warning voltage state for ensuring the minimum action of the watch, thereby the measurement action is maintained for one measurement until the measurement is finished, even when the voltage detection means detects that the voltage is transferred from the 1st action state to the 2nd action state while the time measurement means is making the measurement action. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a timing device provided with time measuring means.

  Conventionally, as a multifunctional measuring device provided with a needle, for example, there is a measuring device having a chronograph function. (For example, refer to Patent Document 1). Such a measuring device has, for example, an hour chronograph hand, a minute chronograph hand, a 1 second chronograph hand, and a 1/10 second chronograph hand for a chronograph, and a start provided in the measuring device. The time measurement is started by pressing the / stop button, and the hour chronograph hand, minute chronograph hand, 1 second chronograph hand, and 1/10 second chronograph hand are rotated. When the start / stop button is pressed again, the time measurement is terminated, and the hour chronograph hand, minute chronograph hand, 1 second chronograph hand, and 1/10 second chronograph hand are stopped to display the measured time. To do. When the reset button provided in the measuring device is pressed, the measuring time is reset, and the hour chronograph hand, minute chronograph hand, 1 second chronograph hand, and 1/10 second chronograph hand are returned to the zero position. .

  Moreover, the multifunctional measuring device provided with the voltage detection means often restricts the control of the measuring device by the output voltage of the secondary battery. For example, if the output voltage of the secondary battery is 2.00 V or higher, the clock function / measurement operation can be performed as a normal operation state, and if the battery voltage of the output battery is between 2.00 V and 1.80 V, the charging warning state is set. In addition to displaying a charging warning for prompting charging, only the clock function is displayed to reduce the consumption of the secondary battery and the measurement operation is prohibited. When the output voltage of the secondary battery is detected between 1.80V and 0.90V, the microcomputer is forced to stop, the clock display / charge warning display is also stopped, and the output voltage is reduced to the microcomputer inoperable state below 0.9V. It prevents the fall as much as possible.

Japanese Patent No. 3446605 (page 1-2, FIG. 2)

  According to Patent Document 1, the chronograph operation is stopped when the remaining capacity of the battery voltage is insufficient even though the chronograph is in an operating state. This is to prevent the remaining capacity of the battery voltage from decreasing due to the continuous operation of the chronograph and falling to the microcomputer operation stop voltage. Further, it is based on the idea that even if the measurement operation is not maintained, it is only necessary to operate only the clock function.

  Hereinafter, the operation of the conventional measuring apparatus will be described with reference to FIGS. 3, 7, and 10. FIG. 3 is a correlation diagram showing the relationship between the battery voltage and the elapsed time of the conventional measuring device, and shows the relationship from the normal operation state of the measuring device to the microcomputer forced stop state. FIG. 7 is a diagram showing the power consumption required for two weeks of clock operation of the conventional measuring device, and FIG. 10 is a flowchart showing the operation of the conventional measuring device.

Conventionally, when a charging warning is given to warn the user to charge the battery, the battery voltage drops and the charging warning state is entered, and only the clock function is activated. Since there is no point in notifying the user of the charging warning state after shifting to the stop state, a voltage for shifting to the charging warning state is set so that the charging warning state can be maintained for at least several weeks. For this reason, the power consumption of the timepiece that can maintain the timepiece operation for several weeks is measured in advance, and a voltage that shifts to a charging warning is set according to the amount of power consumed. For example, if the voltage fluctuation level consumed in two weeks can be measured in advance as 0.2 V as shown in FIG. 7, the clock operation consumption is reduced from 1.8 V that is the microcomputer forced stop voltage as shown in FIG. 3. It is clear that the voltage for shifting to the charging warning state should be 2.00 V by adding 0.2 V.

  Here, the operation in the case where the chronograph is in the run state when the output voltage of the secondary battery of the measuring device is lowered to less than 2.00 V will be described using the flowchart of FIG. In FIG. 10, it is assumed that the output voltage of the secondary battery is in a state of 2.00 V or higher at which the measurement device can normally operate. In step 101 (hereinafter abbreviated as S), the output voltage of the secondary battery is at a voltage level at which normal operation is possible. Therefore, the remaining capacity display is set to “normal operation possible level display”, and “clock function 1 second in S102” Proceed to the “Handing” process. In S102, the “clock function is moved for 1 second”, and the process proceeds to the “chrono function enabled state” process in S103. In S103, “Chrono function possible state” is set, and the process proceeds to S104. That is, when the chronograph is in the run state in S103, the run state is maintained, and when the chronograph is in the stop state or the reset state in S103, the preparation state for shifting to the start state is maintained. Next, in S104, the output voltage of the secondary battery is detected, and it is determined whether or not “2.00 V or higher”. If “Y”, it is still in the “normally operable level display” state. Return. If “N”, the process proceeds to S105 and proceeds to “Charge Warning Display”, the remaining capacity display is set to “Charge Warning Level Display”, and the process proceeds to S106.

In S106, it is determined whether or not the chronograph is in the “chrono-run state”. If it is in the run state, “Y” is determined, the “chrono operation stop” process in S107 is performed, and the process proceeds to S108. On the other hand, if it is not in the run state, it becomes “N” and the process proceeds to S108. In S108, the "clock function 2-second hand movement" process is performed to start 2-second hand movement for prompting charging, and the process proceeds to S109. In S109, the output voltage of the secondary battery is detected to determine “whether it is 2.00 V or higher”. If “Y”, the process returns to “Normal operation possible level display” in S101. If “N”, it is determined whether or not the microcomputer forced stop voltage is “less than 1.80 V”. If “Y”, the process proceeds to the “microcomputer forced stop state” process of S111. For example, the processing returns to the “clock function 2-second hand movement” of S108.

  In the measuring device having the chronograph as described above, since the period in which only the clock function is operable is shifted to the charging warning state, for example, two weeks, the speed of the 1/10 second chrono hand or the like in the charging warning state. When the chronograph function with a fast chronograph hand is operated, the power will be lost at a speed 10 times faster than the normal hand movement, so there is a risk that the output voltage of the secondary battery will drop sharply and the microcomputer will be forced to stop. It was.

  For this reason, it has been necessary to perform control to suddenly stop the chronograph that should be moving when the voltage is shifted to the charging warning during the measurement operation. This stoppage of the chronograph function is an unintended movement of the user, and the user of the measuring device is always uneasy about when the battery voltage is lost and when the measurement cannot be performed. Had. In addition, experiencing the sudden stoppage of the chronograph has the drawback of not only leading to distrust in the measurement operation but also inducing distrust in the measurement device itself. .

  An object of the present invention is to provide a measuring device that eliminates the above-described drawbacks and does not give distrust to the user.

In order to solve the above problems, a measuring device of the present invention includes a time measuring unit that measures an elapsed time, a display unit that displays the elapsed time of the time measuring unit, and starts the operation of the time measuring unit from the outside. In a timing device comprising an external input means for ending and a power supply device, the power supply device comprises a power generation means, a power storage means charged by the power generation means, and a voltage detection means for detecting the voltage of the power storage means A first operating state indicating a voltage state in which the time measuring device is normally operable by the voltage detecting means, and a charging warning state in which the voltage is lower than the first operating state, and the time measuring device A second operation state indicating a voltage state that compensates for a minimum operation of the second operation state, and a third operation indicating a voltage state in which the voltage is further lowered than the second operation state and the time measuring device is forcibly reduced. At least of the state Even if one voltage state is detected and the voltage detecting means detects that the first operating state has shifted from the first operating state to the second operating state during the measuring operation of the time measuring means, 1 until the end of the measurement. The measurement operation for one batch is maintained.

  According to the above configuration, even when the voltage detection unit detects that the first operation state has shifted to the second operation state during the measurement operation, the measurement operation for one time that is the minimum until the end of the measurement is performed. Therefore, it is possible to provide a measuring apparatus that can perform the measuring operation more reliably without causing distrust to the user without stopping the measuring operation unintended by the user.

  Moreover, after the measurement operation for one time is completed, the measurement apparatus is shifted to a charging warning state.

  In this way, by shifting to the charge warning state after the measurement operation is completed, it is possible to warn the user that further measurement operation is impossible and charging is necessary.

  The measuring means is a chronograph function.

  The measuring means is a subtraction timer function.

  In this way, even if the voltage detection means detects that the first operation state has shifted to the second operation state during the measurement operation of the chronograph or the measurement operation of the subtraction timer, the chronograph or subtraction timer The measurement operation for one time that is the minimum until the end of the measurement is maintained, so the measurement operation of the chronograph and subtraction timer can be maintained, and the measurement operation of the chronograph and subtraction timer not intended by the user is stopped Therefore, it is possible to provide a measuring device that does not give distrust to the user.

  Further, the display means is a pointer, and the elapsed time is displayed by the pointer.

  According to this configuration, since the elapsed time can be displayed by the pointer, an analog movement can be expressed.

  As described above, according to the present invention, by setting the voltage that shifts to the charging warning to a voltage value that can maintain the measurement for one time, the measurement operation for one time until the end of the measurement is maintained. It is not necessary to stop the time measurement and operate only the clock function due to the shortage of the remaining capacity, and it is possible to provide a measurement device that does not give distrust to the measurement operation.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a circuit configuration diagram of the measuring device of the present invention, and FIG. 2 is a correlation diagram showing the relationship between the battery voltage and the elapsed time of the measuring device of the present invention, from the normal operation state of the measuring device to the forced microcomputer stop state. Showing the relationship. FIG. 4 is a diagram showing power consumption required for 12 hours of chrono operation of the measuring device of the present invention, FIGS. 5 and 6 are external views of the measuring device of the present invention, and FIG. 5 is a remaining capacity level of the secondary battery. FIG. 6 is an external view showing that the remaining capacity level of the secondary battery is the “CHARGE” level, and FIG. 8 is a view showing that the measuring device of the present invention is after 6 hours of chrono. FIG. 9 is a flowchart showing the operation of the measuring apparatus according to the present invention. FIG. 9 is a correlation diagram between the battery voltage consumption and the battery voltage when the clock operation is stopped and restarted after two weeks.

Hereinafter, description will be made with reference to FIGS. 1, 2, 4, 5, 6, 8, and 9 as appropriate.
As shown in FIGS. 5 and 6, the measuring device 7 of the present invention includes a time display unit 19 including an hour hand 23, a minute hand 22 and a second hand 21, a chrono hour hand 26, a chrono minute hand 25, and a chrono 1/5 second hand 24. The chronograph display unit 20 and a remaining capacity display unit 28 including a remaining capacity hand 27 for displaying the remaining capacity of the secondary battery 14 to be described later are provided. The chronograph hour hand 26, the chrono minute hand 25, and the chrono 1 / The elapsed time of the time measuring means is displayed by a 5-second hand 24.

  In FIG. 1, a measuring device 7 of the present invention comprises a reference signal generating means 1 comprising an oscillator 8 and a frequency dividing circuit 9, a time measuring means 2 comprising a time timer means 101 and a chrono timer means 102, a solar cell and the like. The power generation detection means 15 for detecting the presence or absence of power generation of the power generation means 16, the secondary battery 14 which is a power removal means charged by the power generation energy from the power generation means 16, and the voltage detection means for detecting the output voltage of the secondary battery 14 13, a power supply device 4 composed of 13, a control unit 3 composed of a RAM 10, a ROM 11, and a control device (CPU) (hereinafter abbreviated as a microcomputer) 12, a time display unit 19 composed of an hour hand 23, a minute hand 22 and a second hand 21. A chronograph display section 20 comprising a chronograph 1/5 second hand 24, a chronograph minute hand 25 and a chronograph hour hand 26, and a remaining capacity hand 27 for displaying the remaining capacity of the secondary battery. A display unit 5 having a residual capacity display unit 28 comprising, starting the operation of the time measuring means 2 from the outside, the operation switch A17 for terminating, and an external input means 6 which made of the operation switch B18.

  The oscillator 8 of the reference signal generating means 1 generates a reference signal, and the reference signal is input to the frequency dividing circuit 9 and is divided to a predetermined frequency by the frequency dividing circuit 9, and is supplied to the time measuring means 2 as a frequency divided signal BS. Entered. The reference signal is input to the control means 3 as a clock signal. The time timer means 101 of the time measuring means 2 outputs a time-up signal UP1 every second using the frequency division signal BS of the frequency divider circuit 9 as an input signal by the enable signal E1 of the microcomputer 12. The microcomputer 12 counts the time-up signal UP1 and outputs time information TD to the display means 5 based on this count. Thereby, a time display motor (not shown) is driven, and the time is displayed by the hour hand 23, the minute hand 22 and the second hand 21 of the time display unit 19 of the display means 5.

  The chrono-timer means 102 of the time measuring means 2 for measuring the elapsed time outputs a time-up signal UP2 every 0.1 second with the frequency-divided signal BS of the frequency-dividing circuit 9 as an input signal by the enable signal E2 of the microcomputer 12. The microcomputer 12 outputs the chronograph information CD to the chronograph display unit 20 of the display means 5 every time the time-up signal UP2 is counted twice. As a result, a chronograph motor (not shown) is driven, and chronograph information is displayed by the chronograph 1/5 second hand 24, the chronograph minute hand 25 and the chronograph hour hand 26 of the display means 5.

  The output voltage of the secondary battery 14 charged by the power generation means 16 is detected by the voltage detection means 13, and the voltage detection means 13 outputs the detection result to the microcomputer 12. The microcomputer 12 outputs voltage information DD to the remaining capacity display unit 28 of the display means 5 based on the output of the voltage detection means 13. As a result, a remaining capacity display motor (not shown) is driven, and the remaining capacity is displayed by the remaining capacity hand 27.

  Next, the operation of the measuring apparatus of the present invention will be described. First, the chronograph operation will be described.

[Start Chronograph]
When it is desired to set the chronograph to the run state, the operation switch A17 is operated. The microcomputer 12 outputs an enable signal E2 based on the operation of the operation switch A17. In response to the enable signal E2 of the microcomputer 12, the time-up signal UP2 is output every 0.1 second using the frequency-divided signal BS of the frequency-dividing circuit 9 as an input signal. The microcomputer 12 outputs the chronograph information CD to the display means 5 based on counting the time-up signal UP2 twice, a chronograph motor (not shown) is driven, and the chronograph 1/20 of the chronograph display section 20 is driven. The 5-second hand 24 is driven. The chronograph minute hand 25 and the chronograph hour hand 26 are also moved in conjunction with the chrono 1/5 second hand 24.

[Stop chronograph]
When the chronograph is desired to be stopped, the operation switch A17 is operated. The microcomputer 12 stops the output of the enable signal E2 based on the operation of the operation switch A17. By stopping the output of the enable signal E2, the output of the time-up signal UP2 is also stopped. By stopping the output of the time-up signal UP2, a chronograph motor (not shown) is stopped, and the chronograph 1/5 second hand 24 is also stopped. The chronograph minute hand 25 and the chronograph hour hand 26 also stop in conjunction with each other.

[Reset Chronograph]
When it is desired to reset the chronograph, the operation switch B18 is operated. The microcomputer 12 enters the chrono reset state by clearing the chrono count number stored in the RAM 10 based on the operation of the operation switch B18. In this state, the chronograph 1/5 second hand 24, the chronograph minute hand 25, and the chronograph hour hand 26 are returned to the zero position by a hammer mechanism (not shown).

  Next, operations related to the remaining capacity display will be described with reference to FIGS.

  “L1” to “L3” shown in FIG. 5 and FIG. 6 indicate the charge amount in the first operation state indicating the voltage state in which the timing device 7 can normally operate, and L3 indicates, for example, the voltage of the secondary voltage. “Large charge (full charge)” of 2.43 V or higher, L2 is “medium charge” when the voltage of the secondary voltage is 2.35 V or more and less than 2.43 V, L1 is “2.25 V or more and less than 2.35 V” “Low charge”. In addition, “CHARGE” in the figure is a charge warning state in which the voltage is lower than that in the first operation state, and is a second operation state indicating a voltage state that compensates for the minimum operation of the timing device. For example, the “charge warning state” in which the voltage of the secondary voltage is 1.80 V or more and less than 2.25 V is shown. Note that a third operation state indicating a voltage state in which the voltage is further lowered than the second operation state and the time measuring device is forcibly reduced is defined as a “microcomputer forced stop state”.

  The display of the remaining capacity level changes the state of the display means 5 according to the output voltage of the secondary battery 14 as described above. For example, if the output voltage is 2.25V or more and less than 2.35V, the remaining capacity level is displayed as “L1” as shown in the external view of the measuring device in FIG. That the voltage is correct. At this time, the second hand 21 of the display means 5 moves one second, and the minute hand 22 and hour hand 23 are also moved in conjunction with the second hand 21.

  Further, when the output voltage of the secondary battery 14 falls between 2.25V and 1.8V, the remaining capacity level indicates “CHARGE” as shown in the external view of FIG. Warning. At this time, if the chronograph is not running, the second hand 21 of the display means 5 is moved for 2 seconds (two steps are sent every 2 seconds) in order to prompt charging, so that it is easier to understand that it is in the “charge warning state”. It informs the user.

[Operation when chronograph is reset]
First, the operation in the case where the output voltage of the secondary battery 14 is lowered to a voltage lower than 2.25 V from the normally operable voltage state of 2.25 V or more in the reset state of the chronograph will be described with reference to the flowchart of FIG. 9. To do. In FIG. 9, it is assumed that the output voltage of the secondary battery 14 is in a state of 2.25 V or more and less than 2.35 V in which the measuring device 7 can normally operate. Since the output voltage of the secondary battery 14 is not less than 2.25 V and less than 2.35 V in step 1, the remaining capacity level is set to “L1 display” indicating “low charge amount”, and the “clock function 1-second hand movement” process of S2 is performed. Proceed to In S2, “clock function is moved for 1 second”, and the process proceeds to “Chrono function available state” in S3. In S3, “Chrono function possible state” is set, and the process proceeds to S4. That is, the chronograph is in the reset state and maintains the preparation state for transition to the start state.

  In S4, the output voltage of the secondary battery 14 is detected to determine "whether it is 2.25V or more". If "Y", the process returns to S1. If “N”, the process proceeds to S5 and proceeds to the “CHARGE display” process, the remaining capacity level is set to “CHARGE” representing “charge warning state”, and the process proceeds to S6. In S6, “whether or not chrono run is in progress” is determined. In this case, since it is in a reset state, it becomes “N” and proceeds to the processing of “Chrono operation stop / clock function 2 second hand movement” in S12, and the second hand 21 prompts charging. The 2 second hand movement is started and the process proceeds to S13. In S13, it is determined again whether or not it is 2.25V or more. If “Y”, the process returns to “L1 display” in S1. If “N”, it is determined whether or not “is less than 1.80 V” in S14. If “Y”, the process proceeds to the “microcomputer forced stop state” process in S15. The process returns to the “clock function 2-second hand movement” process.

[Operation when the chronograph is running]
Next, the operation in the case where the output voltage of the secondary battery 14 is lowered to a voltage lower than 2.25V from the normal operable voltage state of 2.25V or more while the chronograph is in the run state will be described with reference to the flowchart of FIG. explain. In FIG. 9, it is assumed that the output voltage of the secondary battery 14 is in a state of 2.25V or more and less than 2.35V in which the measuring device 7 can normally operate, and the chronograph is reset for the processes from S1 to S4. Since this is the same as the operation in the case of the state, the description will be omitted and the processing from “CHARGE display” in S5 will be described.

  From “CHARGE display” in S5, it is determined whether or not “in chrono-run state” in S6. In this case, since it is in the run state, it becomes “Y”, and the process proceeds to S7. In S7, “continue chrono-run state” and proceed to S8. In step S8, the “clock function is one-second movement” is continued, and the process proceeds to step S9, where it is determined whether the operation switch A for stopping the chronograph is operated or not. If it is “Y”, the chrono stop state is entered, so the process proceeds to S12, the process proceeds to “Chrono operation stop / clock function 2 second hand movement”, the second hand 21 becomes a 2 second hand movement and starts the hand movement to promote charging, and the chronograph After stopping, the chrono operation is prohibited and the process proceeds to S13. If “N”, the process proceeds to S10 to determine “whether or not the chrono time can be increased”. If it is “Y”, the process proceeds to the “chrono operation stop / clock function 2-second hand operation”, the second hand 21 becomes a 2-second hand operation, starts the hand operation to promote charging, and prohibits the chrono operation when the chronograph is stopped. If “N”, it is determined whether “2.25 V or higher” in S11. If “N”, it is further determined whether or not “less than 1.80 V” in S20. If “Y”, the process proceeds to the “microcomputer forced stop state” process in S21. Return to "Continue to Chronolan". If the determination of “whether or not 2.25V or higher” in S11 is “Y”, the process returns to “L1 display” in S1.

[Operation when the chronograph is stopped]
When the chronograph is in the stop state, the operation when the output voltage of the secondary battery 14 drops to a voltage lower than 2.25 V from the normal operable voltage state of 2.25 V or more is described when the chronograph is in the reset state It is omitted because it is the same.

Next, how to determine the voltage setting value for switching the remaining capacity level display from “L1” to “CHARGE”, the correlation diagram showing the relationship between the battery voltage and the elapsed time of the measuring device of the present invention of FIG. 2, and the book of FIG. This will be described with reference to a diagram showing the power consumption required for 12 hours of chrono operation of the measuring device of the invention.

  In FIG. 2, in the present invention, even when the measurement operation is performed immediately before the voltage of the secondary battery 14 enters the charge warning state, the chronolan state is set to be maintained for at least 12 hours. That is, in the present invention, the consumption of the measurement operation in which the chrono operation is maintained for 12 hours is measured in advance, and the voltage is set according to the amount of power consumed. For example, as shown in FIG. 4, if the change of the voltage level consumed in 12 hours in the operation of the chronograph can be measured to be 0.25V, the chronograph 12 from the general microcomputer forced stop voltage 1.80V. 0.25V consumed in time is added, and as shown in Fig. 7, the change in voltage level consumed in 2 weeks by clock operation can be measured in advance as 0.2V. Since the total consumption is 0.45 V, the voltage for shifting to the second operation is set to “2.25 V” by adding 1.80 V to 0.45 V.

  From the above, it is less than 2.25V during chrono operation, and even if the chrono run state is maintained, 12 hours of chrono operation is secured, so the control of suddenly stopping the measurement operation is unnecessary, and the battery voltage will soon be The anxiety about the measurement operation that it was lost and could not be measured was solved.

  However, even if the operation of the operation switch A17 is performed in the chrono run state as shown in S9 of the flowchart of FIG. 9 even though 12 hours for the chrono operation is secured, the charging is performed without waiting for the chrono time up. Transition to warning state. The reason for this will be described with reference to FIG.

  As shown in FIG. 8, it is assumed that the chrono is stopped by the operation of the operation switch A17 when 6 hours have passed at a voltage lower than 2.25V, and then the clock operation has passed for 2 weeks. In this state, if the chrono restart operation is performed again, there is a risk that it will drop to less than 1.8 V, which is the microcomputer forced stop voltage, during the chrono operation.

  Therefore, in the present invention, when the chrono stop operation is performed at a voltage lower than 2.25 V, the subsequent chrono operation is prohibited, and only the clock state is operated to shift to the charging warning state.

  Since the user does not know that the voltage has fallen below 2.25 V during the chrono run, the remaining capacity needle 27 is moved to the “CHARGE” position, so that the remaining capacity for the user remains only for one chrono operation. I will let you know.

  In this embodiment, the chronograph is described as an example of the time measurement function of the measurement device. However, instead of the chronograph, a function such as a subtraction timer that is a function of measuring time may be used. It is clear.

It is a circuit block diagram of the measuring device of this invention. It is a correlation diagram which shows the relationship between the battery voltage of the measuring device of this invention, and elapsed time, and is a figure which shows the relationship from the normal operation state of a measuring device to a microcomputer forced stop state. It is a correlation diagram which shows the relationship between the battery voltage of the conventional measuring device, and elapsed time. It is a figure showing the power consumption amount required for the chrono operation | movement for 12 hours of the measuring device of this invention. It is an external view of the measuring device of this invention, and is an external view which shows that the remaining capacity level of a secondary battery is "L1" level. It is an external view of the measuring device of this invention, and is an external view which shows that the remaining capacity level of a secondary battery is a "CHARGE" level. It is a figure which shows the power consumption amount required for the clock operation 2 weeks of the conventional measuring device. FIG. 6 is a correlation diagram between the battery voltage consumption and the secondary battery voltage when the measuring device of the present invention is stopped after 6 hours of chrono, and restarted after 2 weeks of clock operation. It is a flowchart which shows operation | movement of the measuring device of this invention. It is a flowchart which shows operation | movement of the conventional measuring device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Reference signal generation means 2 Time measurement means 3 Control means 4 Power supply device 5 Display means 6 External input means 7 Measurement apparatus 8 Oscillator 9 Dividing circuit 10 RAM
11 ROM
12 Control device (CPU)
13 Voltage detection means 14 Secondary battery 15 Power generation detection means 16 Power generation means 17 Operation switch A
18 Operation switch B
19 Time display section 20 Chronograph display section 21 Second hand 22 Minute hand 23 Hour hand 24 Chrono 1/5 second hand 25 Chrono minute hand 26 Chrono hour hand 27 Remaining capacity hand 28 Remaining capacity display section 101 Time timer means 102 Chrono timer means

Claims (5)

Time measuring means for measuring the elapsed time, display means for displaying the elapsed time of the time measuring means, external input means for starting and ending the operation of the time measuring means from the outside, and a power supply device In the timing device, the power supply device includes a power generation unit, a power storage unit charged by the power generation unit, and a voltage detection unit that detects a voltage of the power storage unit, and the voltage detection unit operates the normal time unit. A first operating state indicating a possible voltage state, and a charging warning state in which the voltage is lower than the first operating state, wherein the second operating state indicates a voltage state that compensates for the minimum operation of the time measuring device. The time measuring means detects at least three voltage states of an operating state and a third operating state indicating a voltage state in which the voltage is further lowered than the second operating state and forcibly lowers the timing device. Measurement During the operation, even if the voltage detection means detects that the first operation state has shifted to the second operation state, the measurement operation for one time until the end of the measurement is maintained. Measuring device. 2. The measuring device according to claim 1, wherein the measuring device is shifted to a charging warning state after the end of the one measurement operation. The measuring apparatus according to claim 1, wherein the measuring unit has a chronograph function. 2. The measuring apparatus according to claim 1, wherein the measuring means has a subtraction timer function. The measuring apparatus according to claim 1, wherein the display unit is a pointer, and the elapsed time is displayed by the pointer.

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