JP6992125B2 - Judgment device, clock and judgment method - Google Patents

Description

The present invention relates to a determination device, a clock, and a determination method.

Conventionally, as a method of notifying a user of battery replacement of a timepiece, there has been a technique of moving a set of hands to a specific position and holding the hands when a decrease in power supply voltage is detected by the detecting means (for example, Patent Document 1). See).

Special Table 2002-512648

Here, the clock may be configured to include a plurality of batteries so that the plurality of batteries each control a specific function connected to a specific power system. When a watch has multiple batteries, other batteries may be above the operable voltage even if one battery is below the operable voltage. In such a case, although the specific function to which the battery below the operable voltage is connected does not operate, only the other function to which the battery exceeding the operable voltage is connected operates. That is, according to the prior art, there is a problem that only a specific function operates when the voltage of a specific battery falls below a predetermined threshold value.

Therefore, according to the present invention, in a timepiece that controls the load of a plurality of power supply systems by a plurality of batteries, when a specific battery falls below a predetermined threshold value, the load other than the load corresponding to the specific battery is also applied. The purpose is to provide a technology that can be controlled so as not to supply electric power.

The determination device according to one aspect of the present invention supplies power to a first power supply voltage acquisition unit that acquires the voltage of the first power supply that supplies power to the first load and a second load that is different from the first load. The second power supply voltage acquisition unit that acquires the voltage of the second power supply, which is a power supply different from the first power supply, and the acquired voltage of the first power supply is equal to or higher than the first threshold value and is acquired. The determination unit for determining whether or not the voltage of the second power supply is equal to or higher than the second threshold, and the determination unit indicate that the voltage of the first power supply is equal to or higher than the first threshold and the voltage of the second power supply is equal to or higher. When it is determined that the voltage is equal to or higher than the second threshold value, a signal instructing to supply power to the first load and the second load is output , and the voltage of the first power supply is less than the first threshold value or the first load. (2) When the voltage of the power supply is less than the second threshold value, the first load and the output unit for prohibiting the supply of power to the second load are provided.

The determination device according to one aspect of the present invention supplies power to a first power supply voltage acquisition unit that acquires the voltage of the first power supply that supplies power to the first load and a second load that is different from the first load. The second power supply voltage acquisition unit that acquires the voltage of the second power supply, which is a power supply different from the first power supply, and the acquired voltage of the first power supply is equal to or higher than the first threshold value and is acquired. The determination unit for determining whether or not the voltage of the second power supply is equal to or higher than the second threshold, and the determination unit indicate that the voltage of the first power supply is equal to or higher than the first threshold and the voltage of the second power supply is equal to or higher. When it is determined that the voltage is equal to or higher than the second threshold value, power can be supplied to at least one of the first load and the second load, and the voltage of the first power supply is less than the first threshold value or the second power supply is supplied. When the voltage of is less than the second threshold value, the first load and the output unit for prohibiting the supply of power to the second load are provided.

Further, the determination device according to one aspect of the present invention further includes a power supply terminal to which power required for driving is supplied from the first power supply.

Further, the clock according to one aspect of the present invention includes the first load having a clock body for measuring the time, the second load having an additional circuit having a function other than the function for measuring the time, and the first load. The first power source for supplying electric power to the second load, the second power source for supplying electric power to the second load, and the determination device according to any one of claims 1 and 2.

Further, in the clock according to one aspect of the present invention, the first load includes a first switch for switching whether or not to supply electric power to the clock body, and the second load supplies electric power to the additional circuit. A second switch for switching whether or not to supply power is provided, and the output unit controls the first switch to switch whether or not to supply electric power to the clock body, and controls the second switch. , Switch whether to supply power to the additional circuit.

Further, in the clock according to one aspect of the present invention, the first load includes a first reset circuit for resetting the watch body, and the second load includes a second reset circuit for resetting the additional circuit. The output unit switches whether or not to control the watch body to the reset state by controlling the first reset circuit, and controls the additional circuit to the reset state by controlling the second reset circuit. Switch whether to do or not.

Further, in the clock according to one aspect of the present invention, the first load includes a first reset circuit for resetting the clock body, and the second load switches whether or not to supply electric power to the additional circuit. A second switch is provided, and the output unit switches whether or not to control the watch body to the reset state by controlling the first reset circuit, and controls the second switch to control the additional circuit. Switch whether or not to supply power to.

Further, in the watch according to one aspect of the present invention, the first load includes a first reset circuit for resetting the watch body, and the determination unit has a voltage of the first power supply equal to or higher than the first threshold value. Moreover, the watch body is maintained in the reset state by controlling the first reset circuit until it is determined that the voltage of the second power supply is equal to or higher than the second threshold value.

Further, the clock according to one aspect of the present invention supplies power to a first power supply voltage acquisition step of acquiring the voltage of the first power supply that supplies power to the first load and a second load different from the first load. The second power supply voltage acquisition step of acquiring the voltage of the second power supply, which is a power source different from the first power supply, and the acquired voltage of the first power supply is equal to or higher than the first threshold value and is acquired. By the determination step of determining whether or not the voltage of the second power supply is equal to or higher than the second threshold value and the determination step, the voltage of the first power supply is equal to or higher than the first threshold value and the voltage of the second power supply is equal to or higher. When it is determined that is equal to or higher than the second threshold value, a signal instructing to supply power to the first load and the second load is output , and the voltage of the first power supply is less than or equal to the first threshold value. It has an output step for prohibiting supply of power to the first load and the second load when the voltage of the second power supply is any one of less than the second threshold .

According to the present invention, in a timepiece that controls a load of a plurality of power supply systems by a plurality of batteries, when a specific battery falls below a predetermined threshold value, the load other than the load corresponding to the specific battery is also applied. It can be controlled not to supply power.

It is a figure which shows an example of the functional structure of the timepiece which concerns on 1st Embodiment. It is a figure which shows an example of the functional structure of the determination device which concerns on 1st Embodiment. It is a figure which shows an example of the functional structure of the determination part which concerns on 1st Embodiment. It is a figure for demonstrating a series of operations of the determination apparatus which concerns on 1st Embodiment. It is a figure which shows an example of the circuit structure of the timepiece which concerns on 2nd Embodiment. It is a figure for demonstrating the state of the power supply according to the state of the 1st power source and the state of the 2nd power source which concerns on 2nd Embodiment. It is a figure which shows an example of the circuit structure of the timepiece which concerns on 3rd Embodiment. It is a figure for demonstrating a series of operations of the determination apparatus which concerns on 3rd Embodiment. It is a figure which shows an example of the circuit structure of the timepiece which concerns on 4th Embodiment.

[First Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, the first embodiment will be described with reference to FIGS. 1 to 4.

[Clock function configuration]
FIG. 1 is a diagram showing an example of the functional configuration of the clock 1 according to the first embodiment. An example of the functional configuration of the clock 1 will be described with reference to the figure.
The clock 1 includes a power supply 20, a determination device 10, and a load 30. In the present embodiment, the clock 1 includes a plurality of power sources 20 and a plurality of loads 30 corresponding to the plurality of power sources 20. The power source 20 supplies electric power for driving the load 30 corresponding to the power source 20. Hereinafter, an example will be described in which the clock 1 includes a first power supply 21, a first load 31 corresponding to the first power supply 21, a second power supply 22, and a second load 32 corresponding to the second power supply 22. do.
When the first power supply 21 and the second power supply 22 are not distinguished, the power supply 20 may be described, and when the first load 31 and the second load 32 are not distinguished, the load 30 may be described.

The power supply 20 is a power supply that can be removed by the user. The power source 20 may be, for example, a primary battery such as a 1.5 V dry battery, a secondary battery such as a rechargeable battery, a physical battery such as a solar cell, or the like that converts physical energy into electrical energy. The power supply 20 is provided in a battery box (not shown) included in the clock 1, and when the user recognizes that the capacity of the power supply 20 is equal to or less than a predetermined value by a predetermined method, the capacity is set to a predetermined value by the user. It will be replaced with a different battery from the one below. Here, the other battery to be replaced by the user may be an unused battery or a battery whose capacity has already been reduced after being used to some extent. For example, when the user recognizes that the pointer of the clock 1 has stopped moving, or when he / she recognizes that a specific function of the clock 1 cannot be used, the capacity of the power supply 20 of the clock 1 becomes a predetermined value or less. Recognize that.
The clock 1 may have a battery capacity decrease notification function (not shown). The battery capacity low notification function notifies the user by a predetermined method when the capacity of the power supply 20 becomes equal to or less than a predetermined value.

The determination device 10 acquires the power supply voltage of the power supply 20. In the present embodiment, since the clock 1 includes the first power supply 21 and the second power supply 22, the determination device 10 acquires the first voltage V1 from the first power supply 21 and the second power supply 22 to the second. 2 Obtain voltage V2. The determination device 10 controls the electric power supplied to the load 30 based on the first voltage V1 and the second voltage V2.
When the determination device 10 includes a plurality of power supplies of three or more, the determination device 10 acquires a power supply voltage from each power supply.

The determination device 10 outputs the enable signal EN to the load 30. The enable signal EN is a signal that controls whether or not to supply the power of the power supply 20 to the load 30. In the present embodiment, since the clock 1 includes the first load 31 and the second load 32, the determination device 10 outputs the first enable signal EN1 to the first load 31 and the second. The second enable signal EN2 is output to the load 32.
When the determination device 10 includes a plurality of loads of 3 or more, the determination device 10 outputs an enable signal EN for each load. The enable signal EN output for each load may be the same signal. In this example, the first enable signal EN1 and the second enable signal EN2 may be the same signal.

The load 30 is driven by the electric power supplied from the power source 20. In the present embodiment, the load 30 includes a first load 31 and a second load 32. The first load 31 has a function of clocking a clock. The first load 31 may be, for example, a clock body. The second load 32 has a function other than the function of measuring the clock. The second load 32 may be, for example, an additional circuit other than the clock body.

In the present embodiment, the case where the first load 31 is a load for moving a pointer of a clock body, that is, a stepping motor or the like will be described. Further, in the present embodiment, the second load 32 may be an additional circuit other than the watch body, that is, a decorative load such as an LED, or a communication load such as Bluetooth (registered trademark) (Bluetooth).
The control signal output from the second load 32 may be configured to drive the function required for moving the pointer of the stepping motor or the like included in the first load 31.

[Functional configuration of determination device 10]
FIG. 2 is a diagram showing an example of the functional configuration of the determination device 10 according to the first embodiment. An example of the functional configuration of the determination device 10 will be described with reference to the figure.
The determination device 10 includes a first voltage acquisition unit (first power supply voltage acquisition unit) 110, a second voltage acquisition unit (second power supply voltage acquisition unit) 120, a determination unit 130, and an output unit 140.

The first voltage acquisition unit 110 acquires the first voltage V1, which is the voltage of the first power supply 21 that supplies electric power to the first load 31. The first voltage acquisition unit 110 provides the acquired first voltage V1 to the determination unit 130. The first voltage acquisition unit 110 may be, for example, an A / D converter that converts an analog signal into a digital signal. In this case, the first voltage V1 is a digital value.
The first voltage acquisition unit 110 may be configured to provide the first voltage V1 as an analog value.

The second voltage acquisition unit 120 acquires the second voltage V2, which is the voltage of the second power supply 22 that supplies electric power to the second load 32. The second load 32 is a different load from the first load 31. Further, the second power supply 22 is a power supply different from the first power supply 21. Therefore, the second voltage acquisition unit 120 is a power supply that supplies power to the second load 32 that is different from the first load 31, and is a power source that is different from the first power supply 21. To get. The second voltage acquisition unit 120 provides the acquired second voltage V2 to the determination unit 130. The second voltage acquisition unit 120 may be, for example, an A / D converter that converts an analog signal into a digital signal. In this case, the second voltage V2 is a digital value.
The second voltage acquisition unit 120 may be configured to provide the second voltage V2 as an analog value.
Hereinafter, when the first voltage acquisition unit 110 and the second voltage acquisition unit 120 are not distinguished, the voltage acquisition unit 100 is described.

The determination unit 130 determines whether or not the voltage acquisition unit 100 is equal to or greater than a predetermined threshold value. Specifically, in the determination unit 130, the first voltage V1 of the first power supply 21 acquired by the first voltage acquisition unit 110 is equal to or higher than the first threshold value V _REF1 , and the second voltage acquisition unit 120 acquires the second voltage. It is determined whether or not the second voltage V2 of the power supply 22 is equal to or higher than the second threshold value V _REF2 . The determination unit 130 may include a storage unit that stores the first threshold value V _REF1 and the second threshold value V _REF2 , or the first threshold value V _REF1 and the second threshold value V _REF2 may be stored in the determination device 10 by a predetermined method. It may be acquired from an externally provided storage unit or the like.
Hereinafter, when the first threshold value V _REF1 and the second threshold value V _REF2 are not distinguished, they are described as the threshold value V _REF .

The output unit 140 outputs a control signal instructing the load 30 to be supplied with the power of the power source 20 based on the result of the determination by the determination unit 130. Specifically, the output unit 140 determines that the first voltage V1 is equal to or higher than the first threshold value V _REF1 and the second voltage V2 is equal to or higher than the second threshold value V _REF2 . A control signal instructing to supply electric power to the first load 31 and the second load 32 is output.
The determination device 10 may be configured by each function provided in the microcomputer. When the determination device 10 is configured by each function provided in the microcomputer, the output unit 140 may be an output terminal of the microcomputer.

FIG. 3 is a diagram showing an example of the functional configuration of the determination unit 130 according to the first embodiment. An example of the functional configuration of the determination unit 130 will be described with reference to the figure.
The determination unit 130 includes a threshold storage unit 131, a comparison unit 132, and an AND circuit 133.
The determination unit 130 may be configured by, for example, each function provided in the microcomputer.

The threshold storage unit 131 stores the threshold value V _REF . For example, when the determination unit 130 is configured to acquire the first voltage V1 and the second voltage V2 as digital values, the threshold value V _REF is stored as a digital value. When the threshold V _REF is stored as a digital value, the threshold storage unit 131 is, for example, a specific area of a ROM (Read Only Memory) (not shown) included in the microcomputer or a ROM (not shown) provided outside the microcomputer. You may.

The determination unit 130 may be configured to acquire the first voltage V1 and the second voltage V2 as analog values. When the determination unit 130 is configured to acquire the first voltage V1 and the second voltage V2 as analog values, the threshold value V _REF is stored as an analog value. When the threshold value V _REF is stored as an analog value, the threshold value storage unit 131 may be provided in a reference voltage IC such as a shunt regulator.

In this embodiment, an example of the case where the threshold value storage unit 131 is provided in the determination unit 130 will be described, but the threshold value storage unit 131 may be provided outside the determination unit 130. When the threshold value storage unit 131 is provided outside the determination unit 130, the determination unit 130 acquires the threshold value V _REF from the threshold value storage unit 131 by a predetermined communication method.

In the present embodiment, since the clock 1 includes two different power supplies 20, the determination unit 130 includes a first threshold storage unit 1311 and a second threshold storage unit 1312. The first threshold storage unit 1311 stores the first threshold V _REF1 . The second threshold storage unit 1312 stores the second threshold V _REF2 . The first threshold value V _REF 1 may be determined, for example, based on the minimum operating voltage of the first load 31. The second threshold value V _REF2 may be determined, for example, based on the minimum operating voltage of the second load 32.
When the first threshold value V _REF1 and the second threshold value V _REF2 have the same value, the first threshold value storage unit 1311 and the second threshold value storage unit 1312 may be the same storage unit.

The comparison unit 132 acquires the threshold value V _REF from the threshold value storage unit 131, and acquires the voltage of the power supply 20 from the voltage acquisition unit 100. The comparison unit 132 compares the acquired values and outputs the comparison result to the AND circuit 133. In the present embodiment, the comparison unit 132 includes a first comparison unit 1321 and a second comparison unit 1322.

The first comparison unit 1321 acquires the first threshold value V _REF1 from the first threshold value storage unit 1311. Further, the first comparison unit 1321 acquires the first voltage V1 from the first voltage acquisition unit 110. The first comparison unit 1321 outputs the result of comparing the first threshold value V _REF1 and the first voltage V1 as the first voltage comparison result COMP1. The first voltage comparison result COMP1 is, for example, binary information according to "0" or "1". When the first voltage comparison result COMP1 has two values, the first comparison unit 1321 sets "0" when the first voltage V1 is smaller than the first threshold value V _REF1 , and the first voltage V1 is the first threshold value V _REF1 . If it is larger than that, "1" may be output.

The second comparison unit 1322 acquires the second threshold value V _REF2 from the second threshold value storage unit 1312. Further, the second comparison unit 1322 acquires the second voltage V2 from the second voltage acquisition unit 120. The second comparison unit 1322 outputs the result of comparing the second threshold value V _REF2 and the second voltage V2 as the second voltage comparison result COMP2. The second voltage comparison result COMP2 is, for example, binary information by "0" or "1". When the second voltage comparison result COMP2 is two values, the second comparison unit 1322 sets "0" when the second voltage V2 is smaller than the second threshold value V _REF2 , and the second voltage V2 is the second threshold value V _REF2 . If it is larger than that, "1" may be output.
Hereinafter, when the first voltage comparison result COMP1 and the second voltage comparison result COMP2 are not distinguished, they are described as the voltage comparison result COMP.

The AND circuit 133 acquires the voltage comparison result COMP from the comparison unit 132. The AND circuit 133 outputs an enable signal EN based on the acquired voltage comparison result COMP. In the present embodiment, the AND circuit 133 acquires the first voltage comparison result COMP1 from the first comparison unit 1321 and the second voltage comparison result COMP2 from the second comparison unit 1322. The AND circuit 133 outputs the enable signal EN based on the first voltage comparison result COMP1 acquired from the first comparison unit 1321 and the second voltage comparison result COMP2 acquired from the second comparison unit 1322.
When the first voltage comparison result COMP1 and the second voltage comparison result COMP2 are represented by the above-mentioned two values, in the AND circuit 133, both the first voltage comparison result COMP1 and the second voltage comparison result COMP2 are "1". If, the enable signal EN is output. The AND circuit 133 outputs the enable signal EN to the output unit 140.

The determination device 10 may be driven by the electric power supplied by the first power supply 21. Specifically, the determination device 10 includes a power supply terminal (not shown), and the power required for driving the determination device 10 is obtained from the first power supply 21.

FIG. 4 is a diagram for explaining a series of operations of the determination device 10 according to the first embodiment. A series of operations of the determination device 10 will be described with reference to the figure.
(Step S11) The first voltage acquisition unit 110 acquires the first voltage V1 from the first power supply 21.
(Step S13) The second voltage acquisition unit 120 acquires the second voltage V2 from the second power supply 22.

(Step S15) When the acquired first voltage V1 is equal to or higher than the first threshold value V _REF1 and the second voltage V2 is equal to or higher than the second threshold value V _REF2 (that is, step S15; YES). , The process proceeds to step S17. When the acquired first voltage V1 is not equal to or higher than the first threshold value V _REF1 and the second voltage V2 is not equal to or higher than the second threshold value V _REF2 (that is, step S15; NO), the determination unit 130 determines. The process proceeds to step S11.
(Step S17) The output unit 140 outputs an enable signal EN, which is a signal instructing the load 30 to be supplied with electric power. When the enable signal EN is input, the load 30 supplies electric power to the load and starts the operation of the clock function and the additional function.

[Summary of the first embodiment]
According to the embodiment described above, the determination device 10 acquires the power supply voltage of the power supply 20 by including the first voltage acquisition unit 110 and the second voltage acquisition unit 120. When the determination device 10 includes the determination unit 130 so that the first voltage V1 acquired by the first voltage acquisition unit 110 and the second voltage V2 acquired by the second voltage acquisition unit 120 are both equal to or higher than the threshold value. The enable signal EN instructing to supply power to the load 30 is output.
That is, according to the present embodiment, power is supplied to the load 30 only when both the first voltage V1 and the second voltage V2 are equal to or higher than the threshold value. Therefore, in a timepiece that controls the load of a plurality of power supply systems by a plurality of batteries, the determination device 10 receives a load other than the load corresponding to the specific battery when the specific battery falls below a predetermined threshold value. Can also be controlled not to supply power.

Conventionally, the first load 31 may be a load such as a stepping motor that moves the pointer of the clock 1, and the second load 32 may be a load that generates a pulse signal for driving the stepping motor of the clock 1. there were. In such a case, even if the voltage of the second power supply 22 that supplies power to the second load 32 is equal to or higher than the predetermined value, if the voltage of the first power supply 21 that supplies power to the first load 31 falls below the predetermined value. The second load 32 continued to generate a pulse signal for driving the stepping motor. That is, according to the prior art, although the stepping motor continues to be given a pulse signal, the stepping motor cannot be driven, so that the user continues to consume the second power source 22. Sometimes it couldn't be recognized. Therefore, the user could not recognize that the second power supply 22 was wasted. According to the present embodiment, when the battery of 1 falls below a predetermined threshold value, the determination device 10 does not supply power to a load other than the load corresponding to the battery, so that the power is wasted. It can be deterred.

Further, for example, the first load 31 is a load such as a stepping motor that generates a pulse signal by itself and moves the pointer of the clock 1, and the second load 32 is an LED for lighting up the dial of the clock 1. If the voltage of the first power supply 21 that supplies power to the first load 31 is equal to or higher than a predetermined value, the voltage of the second power supply 22 that supplies power to the second load 32 is irrelevant. However, the pointer was being moved. Therefore, the user may not be able to use the light-up function of the dial even though the pointer is being moved. In such a situation, the user could not recognize whether the reason why the dial light-up function could not be used was due to the dead battery or the failure of the function. According to the present embodiment, when the specific battery falls below a predetermined threshold value, the determination device 10 does not supply power to a load other than the load corresponding to the specific battery, so that the additional function cannot be used. In that case, the clock function of the clock cannot be used either. Therefore, the user can recognize that the additional function cannot be used due to the dead battery.

Further, according to the clock according to the prior art, when the user replaces the battery after detecting the voltage abnormality such as the voltage drop, the voltage abnormality such as the voltage drop is determined until the user presses the reset button. Was maintained. That is, according to the clock according to the prior art, it is necessary for the user to press the reset button in order to perform the normal operation reliably. However, according to the present embodiment, the clock 1 is provided with the determination device 10 so that the clock 1 can operate normally even if the user does not press the reset button.

Further, according to the clock according to the prior art, when the batteries are inserted in the order of → additional circuit (LED circuit) after turning on the power of the clock control circuit, it is necessary for the user to press the reset button. However, according to the present embodiment, the clock 1 is provided with the determination device 10 so that the clock 1 can operate normally even if the user does not press the reset button.

Further, in the present embodiment, the determination device 10 obtains the electric power required for driving from the first power source 21. Therefore, the determination device 10 can be driven without separately preparing the electric power required for driving.

[Second Embodiment]
Next, a second embodiment will be described with reference to FIGS. 5 and 6.
FIG. 5 is a diagram showing an example of the circuit configuration of the clock 1A according to the second embodiment. The clock 1A is an example of the clock 1. In the second embodiment, the clock 1A detects the voltage of the power supply 20 by the voltage detector 40. The clock 1A includes a power supply 20, a determination device 10A, and a load 30. The determination device 10A includes a voltage detector 40 and a determination circuit 135.

The voltage of the power supply 20 is input to the voltage detector 40. Further, the voltage detector 40 has a predetermined threshold value. The voltage detector 40 outputs an output signal based on the input voltage and a predetermined threshold value. For example, the voltage detector 40 outputs a high level when the input voltage is larger than a predetermined threshold value, and outputs a low level when the input voltage is smaller than the predetermined threshold value.
The voltage detector 40 is, for example, a voltage detector such as a shunt regulator or a system reset IC.

In the present embodiment, as an example, an example of a case where the clock 1A includes a first power supply 21 and a second power supply 22 will be described. The clock 1A includes a first voltage detector 41 corresponding to the first power supply 21 and a second voltage detector 42 corresponding to the second power supply 22. The first voltage detector 41 and the second voltage detector 42 are both examples of the voltage detector 40.

The first voltage detector 41 includes a first voltage acquisition unit 110, a first threshold storage unit 1311, and a first comparison unit 1321. The first voltage detector 41 acquires the first voltage V1 by the first voltage acquisition unit 110. Further, the first voltage detector 41 compares the acquired first voltage V1 with the first threshold value V _REF1 stored in the first threshold value storage unit 1311 by the first comparison unit 1321. The first voltage detector 41 outputs the first voltage comparison result COMP1, which is the result of comparison, to the determination circuit 135. That is, the first voltage detector 41 is a specific example of the first voltage acquisition unit 110, the first threshold value storage unit 1311, and the first comparison unit 1321 described with reference to FIG. 3 in the first embodiment.

The second voltage detector 42 includes a second voltage acquisition unit 120, a second threshold storage unit 1312, and a second comparison unit 1322. The second voltage detector 42 acquires the second voltage V2 by the second voltage acquisition unit 120. Further, the second voltage detector 42 compares the acquired second voltage V2 with the second threshold value V _REF2 stored in the second threshold value storage unit 1312 by the second comparison unit 1322. The second voltage detector 42 outputs the second voltage comparison result COMP2, which is the result of the comparison, to the determination circuit 135. That is, the second voltage detector 42 is a specific example of the second voltage acquisition unit 120, the second threshold value storage unit 1312, and the second comparison unit 1322 described with reference to FIG. 3 in the first embodiment.

The determination circuit 135 outputs the enable signal EN based on the acquired first voltage comparison result COMP1 and the second voltage comparison result COMP2. The determination circuit 135 includes an output unit 141 and an output unit 142 as the output unit 140. The output unit 141 and the output unit 142 are examples of the output unit 140. The determination circuit 135 outputs the first enable signal EN1 instructing the first load 31 to supply electric power from the output unit 141, and instructs the output unit 142 to supply electric power to the second load 32. The second enable signal EN2 is output. That is, the determination circuit 135 in this embodiment is a specific example of the AND circuit 133 described with reference to FIG. 3 in the first embodiment.

The determination circuit 135 is supplied with electric power from the first power supply 21. The first power source 21 is a power source for supplying electric power to the first load 31 having a clock body.

The first load 31 includes a clock body 311 and a first switch 312.
The clock body 311 keeps time.
The first switch 312 switches whether to supply electric power to the clock body 311 based on the first enable signal EN1 output by the determination device 10A.
That is, the first load 31 includes a clock body 311 that measures the time and a first switch 312 that switches whether to supply power to the clock body 311.

The first switch 312 is, for example, a p-channel MOSFET (Metal Oxide Semiconductor Field Effect Transistor). When the first switch 312 is a p-channel MOSFET, the first enable signal EN1 is input to the gate terminal of the first switch 312. The first switch 312 supplies power to the watch body 311 by passing a current between the drain and the source when the first enable signal EN1 is at a high level, and drains when the first enable signal EN1 is at a low level. -Do not supply power to the watch body 311 by not passing current between the sources.

The second load 32 includes an additional circuit 321 and a second switch 322.
The additional circuit 321 has a function other than the function of measuring the time.
The second switch 322 switches whether to supply electric power to the additional circuit 321 based on the second enable signal EN2 output by the determination device 10A.
That is, the second load 32 includes an additional circuit 321 having a function other than the function of measuring the time, and a second switch 322 for switching whether or not to supply power to the additional circuit 321.

The second switch 322 is, for example, a p-channel type MOSFET. When the second switch 322 is a p-channel MOSFET, the second enable signal EN2 is input to the gate terminal of the second switch 322. The second switch 322 supplies power to the additional circuit 321 by passing a current between the drain and the source when the second enable signal EN2 is at a high level, and drains when the first enable signal EN1 is at a low level. -Power is not supplied to the additional circuit 321 by not passing a current between the sources.

FIG. 6 is a diagram for explaining the state of power supply according to the state of the first power supply 21 and the second power supply 22 according to the second embodiment. The state of the power supply according to the state of the first power source 21 and the second power source 22 according to the second embodiment will be described with reference to FIG. When the user recognizes that the value is equal to or less than the value of, the user replaces the power supply 20. Specifically, since the power source 20 is a battery, the user replaces the battery when he / she recognizes that the pointer of the clock is not moving. In the present embodiment, since the clock 1 includes the first power source 21 and the second power source 22 as the power source 20, the user exchanges the first power source 21 and the second power source 22. Specifically, when the user replaces both the first power supply 21 and the second power supply 22, when replacing only the first power supply 21, when replacing only the second power supply 22, any of the first power supply 21 and the second power supply 22 May not be replaced. As described above, depending on the behavior of the user, old and new batteries may coexist in the clock 1A.

Here, the case where the first voltage V1 of the first power supply 21 is equal to or higher than the first threshold value V _REF1 and the second voltage V2 of the second power supply 22 is equal to or higher than the second threshold value V _REF2 is defined as the first state. The second state is when the first voltage V1 of the first power supply 21 is equal to or higher than the first threshold value V _REF1 and the second voltage V2 of the second power supply 22 is less than the second threshold value V _REF2 . The third state is when the first voltage V1 of the first power supply 21 is less than the first threshold value V _REF1 and the second voltage V2 of the second power supply 22 is equal to or higher than the second threshold value V _REF2 . The fourth state is when the first voltage V1 of the first power supply 21 is less than the first threshold value V _REF1 and the second voltage V2 of the second power supply 22 is less than the second threshold value V _REF2 .

In the present embodiment, as described with reference to FIG. 5, the determination device 10A is supplied with electric power from the first power source 21. Therefore, in the first state, power is supplied from the first power supply 21 to the determination device 10A, so that the determination device 10A can operate. The determination device 10A supplies electric power to the first load 31 and the second load 32 by outputting the enable signal EN to the load 30 based on the first voltage V1 and the second voltage V2. Therefore, as shown in FIG. 6, in the first state, "power supply to the determination device" is "presence" and "power supply to the load" is "presence".

In the second state, since power is supplied from the first power supply 21 to the determination device 10A, the determination device 10A can operate. Since the second voltage V2 is less than the second threshold value V _REF2 , the determination device 10A does not output the enable signal EN to the load 30, and the power is not supplied to the first load 31 and the second load 32. Therefore, as shown in FIG. 6, in the second state, the “power supply to the determination device” is “present” and the “power supply to the load” is “absent”.

In the third state, power is not supplied from the first power supply 21 to the determination device 10A, so that the determination device 10A cannot operate. Therefore, the first switch 312 and the second switch 322 are not controlled by the determination device 10A. Here, the potentials of the first switch 312 and the second switch 322 may be grounded by a pull-down resistor or the like. In this case, whether or not power is supplied to the first load 31 and the second load 32 is based on the potential of the gates of the first switch 312 and the second switch 322. In the present embodiment, since the gates of the first switch 312 and the second switch 322 are fixed to the ground potential by the pull-down resistance, power is not supplied to the first load 31 and the second load 32. Therefore, as shown in FIG. 6, in the third state, the “power supply to the determination device” is “none” and the “power supply to the load” is “none”.

In the fourth state, as in the third state, power is not supplied from the first power supply 21 to the determination device 10A, so that the determination device 10A cannot operate. Therefore, the first switch 312 and the second switch 322 are not controlled by the determination device 10A, and power is not supplied to the first load 31 and the second load 32. Therefore, as shown in FIG. 6, in the fourth state, the “power supply to the determination device” is “none” and the “power supply to the load” is “none”.

As described above with reference to FIG. 6, in the present embodiment, when either the first power supply 21 or the second power supply 22 is equal to or less than the threshold value, the first voltage V1 of the first power supply 21 is the first threshold value. If it is V _REF 1 or more, the determination device 10A determines, and if it is less than the first threshold value V _REF 1, the power supplied to the load 30 by the gate processing of the first switch 312 and the second switch 322 is It is blocked.

[Summary of the second embodiment]
According to the embodiment described above, the clock 1A is provided with the first switch 312 to switch whether or not to supply electrodes to the clock body 311, and is provided with the second switch 322 to supply electric power to the additional circuit 321. Switch whether to supply or not. The first switch 312 and the second switch 322 are, for example, MOSFETs. Therefore, according to the clock 1A in the present embodiment, it is possible to suppress the electric power for switching the electric power.

[Third Embodiment]
Next, a third embodiment will be described with reference to FIGS. 7 and 8.
FIG. 7 is a diagram showing an example of the circuit configuration of the clock 1B according to the third embodiment. The clock 1B is a modification of the clock 1A. In the third embodiment, the clock 1B differs from the clock 1A in that the load 30B is provided in place of the load 30.

In the present embodiment, the clock 1B includes a first load 31B and a second load 32B as the load 30B.
The first load 31B includes a clock body 311B. The clock body 311B differs from the clock body 311 in that it includes a reset circuit. The watch body 311B is controlled to the reset state by the reset signal RST. In the present embodiment, the reset signal RST may be, for example, the first enable signal EN1. The reset circuit included in the watch body 311B is also referred to as a first reset circuit.
The second load 32B includes an additional circuit 321B. The additional circuit 321B differs from the additional circuit 321 in that it includes a reset circuit. The additional circuit 321B is controlled to the reset state by the reset signal RST. In the present embodiment, the reset signal RST may be, for example, the second enable signal EN2. The reset circuit included in the additional circuit 321B is also referred to as a second reset circuit.

FIG. 8 is a diagram for explaining a series of operations of the determination device 10B according to the third embodiment. A series of operations of the determination device 10B will be described with reference to the figure.
(Step S21) The determination device 10B maintains the state while outputting the reset signal RST to the first load 31B and the second load 32B.
(Step S23) The first voltage acquisition unit 110 acquires the first voltage V1 from the first power supply 21.
(Step S25) The second voltage acquisition unit 120 acquires the second voltage V2 from the second power supply 22.

(Step S27) When the acquired first voltage V1 is equal to or higher than the first threshold value V _REF1 and the second voltage V2 is equal to or higher than the second threshold value V _REF2 (that is, step S27; YES). , The process proceeds to step S29. When the acquired first voltage V1 is not equal to or higher than the first threshold value V _REF1 and the second voltage V2 is not equal to or higher than the second threshold value V _REF2 (that is, step S27; NO), the determination unit 130 determines. The process returns to step S21.
(Step S29) The output unit 140 releases the reset state of the first load 31B and the second load 32B. The first load 31B and the second load 32B start the operation of the clock function and the additional function when the reset state is released.

[Summary of the third embodiment]
According to the embodiment described above, the determination device 10B controls the drive state of the load 30 by providing the reset circuit for each of the plurality of loads 30. Therefore, according to the present embodiment, the plurality of loads 30 can surely maintain the reset state.
Further, according to the present embodiment, the load 30 can be reliably maintained in the reset state while the power is being supplied. Further, since the load 30 is supplied with power, it is possible to display a display such as an LED to urge the user to replace the battery.

[Fourth Embodiment]
Next, a fourth embodiment will be described with reference to FIG. 9.
FIG. 9 is a diagram showing an example of the circuit configuration of the clock 1C according to the fourth embodiment. The clock 1C is a modification of the clock 1A. In a fourth embodiment, the clock 1C differs from the clock 1A in that it includes a first load 31B and a second load 32.
The first load 31B includes a clock body 311B. The clock body 311B differs from the clock body 311 in that it includes a reset circuit. The watch body 311B is controlled to the reset state by the reset signal RST. In the present embodiment, the reset signal RST may be, for example, the first enable signal EN1. The reset circuit included in the watch body 311B is also referred to as a first reset circuit.
The second load 32 includes an additional circuit 321 and a second switch 322.
The additional circuit 321 has a function other than the function of measuring the time.
The second switch 322 switches whether to supply electric power to the additional circuit 321 based on the second enable signal EN2 output by the determination device 10A.

That is, the fourth embodiment is a mixture of the method of controlling the power supply by the switch described in the second embodiment and the method of controlling the power supply by the reset circuit described in the third embodiment. This is the embodiment.
In the present embodiment, the clock 1C does not operate the clock body 311B and the additional circuit 321 when at least one of the first voltage V1 and the second voltage V2 is equal to or less than a predetermined threshold value. Specifically, the clock 1C maintains the reset state of the clock body 311B and does not supply power to the additional circuit 321 when at least one of the first voltage V1 and the second voltage V2 is equal to or less than a predetermined threshold value.

In other words, the clock 1C in the fourth embodiment has the clock body 311B and the additional circuit 321 when the first voltage V1 is equal to or higher than the first threshold value and the second voltage V2 is equal to or higher than the second threshold value. At least one of them should be able to supply power. Specifically, when the first voltage V1 is equal to or higher than the first threshold value and the second voltage V2 is equal to or higher than the second threshold value, the clock 1C releases the reset state of the clock body 311B and goes to the additional circuit 321. Make the power supply possible. Here, the clock 1C is triggered by the hour signal from the clock body 311B at the time of the hour, and the power supply to the additional circuit 321 is started. It is cut off and the additional circuit 321 is maintained in a state where power can be supplied. The trigger for starting the power supply to the additional circuit 321 is not limited to the above, and may be a switch signal or the like by pressing a monitor button or the like.

Although the embodiments of the present invention have been described above with reference to the drawings, the specific configuration is not limited to the above-described embodiments, and design changes and the like are included without departing from the gist of the present invention.

In the output unit of the determination device of the present embodiment, the first voltage V1 of the first power supply 21 acquired by the first voltage acquisition unit 110 is equal to or less than the first threshold value, or the second power supply 22 acquired by the second voltage acquisition unit 120. Further has a function of stopping both the power supply for driving the first load 31 and the power supply for driving the second load 32 when the second voltage V2 is equal to or less than the second threshold value. You may. Further, in this case, the user may be notified by a predetermined method that the capacity of the power supply 20 has become equal to or less than a predetermined value by the battery capacity decrease notification function.

As a result, by notifying the user when any one of the plurality of batteries falls below a predetermined threshold value, power is more reliably supplied to a load other than the load corresponding to the specific battery. Can be controlled.

In addition, all or a part of the functions of each part of the clock 1 and the determination device 10 in the above-described embodiment are recorded on a computer-readable recording medium and the program for realizing these functions is recorded on the recording medium. It may be realized by loading the recorded program into a computer system and executing it. The term "computer system" as used herein includes hardware such as an OS and peripheral devices.
Further, the "computer-readable recording medium" refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, or a CD-ROM, or a storage unit such as a hard disk built in a computer system. Further, a "computer-readable recording medium" is a communication line for transmitting a program via a network such as the Internet or a communication line such as a telephone line, and dynamically holds the program for a short period of time. It may also include a program that holds a program for a certain period of time, such as a volatile memory inside a computer system that is a server or a client in that case. Further, the above-mentioned program may be for realizing a part of the above-mentioned functions, and may be further realized for realizing the above-mentioned functions in combination with a program already recorded in the computer system.

1 ... Clock, 10 ... Judgment device, 20 ... Power supply, 21 ... First power supply, 22 ... Second power supply, 30 ... Load, 31 ... First load, 32 ... Second load, 100 ... Voltage acquisition unit, 110 ... No. 1 voltage acquisition unit, 120 ... second voltage acquisition unit, 130 ... determination unit, 140 ... output unit, 131 ... threshold storage unit, 1311 ... first threshold storage unit, 1312 ... second threshold storage unit, 132 ... comparison unit, 1321 ... 1st comparison unit, 1322 ... 2nd comparison unit 133 ... AND circuit, 1331 ... 1st determination unit, 1332 ... 2nd determination unit 311 ... Clock body, 312 ... 1st switch, V1 ... 1st voltage, V2 ... 2nd voltage, EN ... enable signal, EN1 ... 1st enable signal, EN2 ... 2nd enable signal

Claims (9)

A first power supply voltage acquisition unit that acquires the voltage of the first power supply that supplies power to the first load, and
A second power supply voltage acquisition unit that acquires the voltage of the second power supply, which is a power supply that supplies power to a second load different from the first load and is a power supply different from the first power supply.
A determination unit for determining whether or not the acquired voltage of the first power supply is equal to or higher than the first threshold value and the acquired voltage of the second power supply is equal to or higher than the second threshold value.
When the determination unit determines that the voltage of the first power supply is equal to or higher than the first threshold value and the voltage of the second power supply is equal to or higher than the second threshold value, the first load and the second load are determined. The first load and the first load when a signal instructing to supply electric power is output and the voltage of the first power supply is less than the first threshold value or the voltage of the second power supply is less than the second threshold value. 2 Judgment device provided with an output unit that prohibits the supply of power to the load . A first power supply voltage acquisition unit that acquires the voltage of the first power supply that supplies power to the first load, and
A second power supply voltage acquisition unit that acquires the voltage of the second power supply, which is a power supply that supplies power to a second load different from the first load and is a power supply different from the first power supply.
A determination unit for determining whether or not the acquired voltage of the first power supply is equal to or higher than the first threshold value and the acquired voltage of the second power supply is equal to or higher than the second threshold value.
When the determination unit determines that the voltage of the first power supply is equal to or higher than the first threshold value and the voltage of the second power supply is equal to or higher than the second threshold value, at least the first load and the second load. One of them is in a state where power can be supplied, and when the voltage of the first power supply is less than the first threshold value or the voltage of the second power supply is less than the second threshold value, the first load and the second load are charged. An output unit that prohibits the supply of power to the power
Judgment device. The determination device according to claim 1 or 2, further comprising a power supply terminal to which power required for driving is supplied from the first power source. With the first load having a clock body that measures the time,
The second load having an additional circuit having a function other than the function of measuring the time, and the second load.
The first power supply that supplies electric power to the first load, and
The second power source that supplies electric power to the second load, and
A timepiece including the determination device according to any one of claims 1 to 3. The first load includes a first switch for switching whether or not to supply electric power to the watch body.
The second load includes a second switch that switches whether to supply power to the additional circuit.
The output unit switches whether or not to supply electric power to the watch body by controlling the first switch, and whether or not to supply electric power to the additional circuit by controlling the second switch. The clock according to claim 4. The first load includes a first reset circuit for resetting the watch body.
The second load includes a second reset circuit that resets the additional circuit.
The output unit switches whether or not to control the watch body to the reset state by controlling the first reset circuit, and controls the additional circuit to the reset state by controlling the second reset circuit. The clock according to claim 4, which switches whether or not to do so. The first load includes a first reset circuit for resetting the watch body.
The second load includes a second switch that switches whether to supply power to the additional circuit.
The output unit switches whether to control the watch body to the reset state by controlling the first reset circuit, and supplies electric power to the additional circuit by controlling the second switch. The clock according to claim 4, which switches whether or not. The first load includes a first reset circuit for resetting the watch body.
The determination unit controls the first reset circuit until it determines that the voltage of the first power supply is equal to or higher than the first threshold value and the voltage of the second power supply is equal to or higher than the second threshold value. The clock according to claim 4, which maintains the reset state. The first power supply voltage acquisition process for acquiring the voltage of the first power supply that supplies power to the first load, and
A second power supply voltage acquisition step of acquiring the voltage of the second power supply, which is a power supply that supplies power to a second load different from the first load and is a power supply different from the first power supply.
A determination step for determining whether or not the acquired voltage of the first power supply is equal to or higher than the first threshold value and the acquired voltage of the second power supply is equal to or higher than the second threshold value.
When it is determined by the determination step that the voltage of the first power supply is equal to or higher than the first threshold value and the voltage of the second power supply is equal to or higher than the second threshold value, the first load and the second load When the voltage of the first power supply is less than the first threshold value or the voltage of the second power supply is less than the second threshold value, the first load and the said are output. A determination method having an output process that prohibits the supply of electric power to the second load .

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