JPH07151873A - Clock apparatus - Google Patents

Abstract

PURPOSE:To detect service interruption readily and to alleviate the labor for clock adjustment after the restoration of service interruption by storing the present time and service interruption data when a commercial power supply system has stopped, and starting the timing from the time corresponding to the present time data, which are read out at the time of the restoration of service interruption. CONSTITUTION:When a service-interruption detecting means provided in a control circuit 1 detects the service interruption of a commercial power supply system based on the drop of a voltage-divided output 51 of a rectifying voltage detecting circuit 5, the present time, which is timed with a timing means, and the fact of the occurrence of the service interruption are stored into E<2>PROM 2 as the present time data and the service interruption data. When the service is restored after the occurrence of the service interruption, the service-interruption detecting means detects the restoration of service, reads the present time data and the service interruption data out of the ROM 2 and starts the timing again. The display of the occurrence of the service interruption is erased on a display device 3, and the present time at the time of the service interruption is displayed. The time is adjusted to the present time with a clock adjusting switch 4. The present time, which is displayed at the restorations of service, is delayed by the time period of the service interruption. Therefore, the number of pushings of the switch 4 at the time of setting the clock to the present time becomes less, and the labor is saved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timepiece device to which operating power is supplied via a commercial power source.

[0002]

2. Description of the Related Art In order to replace the clock during operation stop,
A gas hot air heater used by connecting to a commercial power source is known, which incorporates a clock device equipped with a timekeeping means for measuring the current time and a display means for displaying the current time measured by the timekeeping means on a display device. Has been. When an on-timer is added to the gas warm air heater, the operation can be started when the current time reaches the timer set time.

However, when the commercial power supply fails, the operating power to the timekeeping means is stopped and reset. When the power is restored, the timekeeping means starts counting from "0:00", so "0: 0".
Except when the power is restored at a time close to 0 ", the actual current time and the displayed current time are significantly different, so that it takes time for the user to reset the clock.

In order to prevent this, a technique is known in which a watch is operated by a backup power supply even during a power failure so that the watch does not get out of order even if a short-term (several minutes) power failure occurs.

[0005]

If the above-described technique for backing up a clock in the event of a power failure is adopted in the gas hot air heating equipment, it is not necessary to reset the clock even if a short power failure occurs. As a result, for example, a large-capacity capacitor is required, which increases the cost of parts.

It is an object of the present invention to provide a timepiece device which can be easily connected to a commercial power source so that whether or not a power failure has occurred can be easily determined and the time and effort required for clock adjustment at the time of power recovery can be reduced.

[0007]

[Means for Solving the Problems] In order to solve the above problems,
The present invention has the following configurations. (1) The power for operation is supplied via the commercial power supply, and the time means for measuring the current time and the power for operation via the commercial power supply are displayed, and the current time measured by the time measuring means is displayed. In a timepiece device having a display means for displaying on a display, a semiconductor nonvolatile memory in which stored data is electrically rewritable, a power failure detection means for detecting a power failure of a commercial power supply, and the power failure detection means is a power failure of the commercial power supply. When the power failure is detected, the current time measured by the time measuring means and the fact that the power failure has occurred are stored in the semiconductor nonvolatile memory as current time data and power failure data, and the power failure detecting means restores the commercial power supply. When a power failure is detected, a data reading means for reading the current time data and the power failure data from the semiconductor nonvolatile memory is provided. The time counting means restarts time counting based on the present time data, and the display means displays the current time and power failure occurrence display on the display.

(2) Electric power for operation is supplied through a commercial power source, and time measuring means for measuring the present time, and electric power for operation is supplied through a commercial power source, and the current time measured by the time measuring means. In a timepiece device provided with a display means for displaying time on a display, a semiconductor nonvolatile memory in which stored data is electrically rewritable, a power failure detection means for detecting a power failure of a commercial power supply, and the power failure detection means is a commercial When a power failure of the power supply is detected, the current time measured by the time measuring means and the fact of the occurrence of the power failure are stored in the semiconductor nonvolatile memory as current time data and power failure data, and the power failure detecting means is a commercial power source. When the power recovery of
Data reading means for reading the current time data and power failure data from the semiconductor nonvolatile memory, and power failure occurrence confirmation means for confirming the power failure are provided, and when the power failure detection means detects a power recovery, the display means displays the power failure occurrence display. Along with displaying on the display, the time counting means restarts time counting based on the read current time data, and when a power failure is confirmed, the display means changes the display of the display to the current time. Switch.

(3) With the configuration of (1) above, when the power failure detecting means detects a power recovery, the display means alternately displays the present time and the power failure occurrence display on the display.

(4) Having the structure of (1) above, another display is newly provided, and when the power failure detection means detects a power recovery, the display means changes the power failure occurrence display to another display. indicate.

(5) With the configuration of the above (1), when the power failure detection means detects a power recovery, the display means displays the current time and blinks the current time display as a power failure occurrence display. To

[0012]

[Action]

[Claim 1] When there is no power failure in the commercial power source, the time counting means receives the power for operation from the commercial power source to measure the current time, and the display means displays the current time on the display. .

When a power failure occurs in the commercial power source, the power failure detecting means detects the power failure, and the data storing means stores the current time and the fact of the power failure in the semiconductor nonvolatile memory as current time data and power failure data.

When the power failure of the commercial power source is restored, the power failure detecting means detects the power recovery, and the data reading means reads the current time data and the power failure data from the semiconductor nonvolatile memory.

The clocking means restarts clocking from the time corresponding to the read current time data, and the display means displays the current time and the power failure occurrence display on the display.

[Claim 2] When the power failure of the commercial power source is restored, the power failure detecting means detects the power recovery, and the data reading means reads the current time data and the power failure data from the semiconductor nonvolatile memory.

Further, the display means displays a power failure occurrence display on the display, and the clock means restarts the clock from the time corresponding to the read current time data.

When the user operates the power failure occurrence confirmation means,
The display means switches the display on the display from the power failure occurrence display to the current time display.

[Claim 3] When the power failure of the commercial power source is restored, the power failure detecting means detects the power recovery, and the data reading means reads the current time data and the power failure data from the semiconductor nonvolatile memory.

The time measuring means restarts time counting from the time corresponding to the read current time data, and the display means alternately displays the current time and the power failure occurrence display on the display.

[Claim 4] When the power failure of the commercial power source is restored, the power failure detecting means detects the power recovery, and the data reading means reads the current time data and the power failure data from the semiconductor nonvolatile memory.

The clocking means restarts clocking from the time corresponding to the read current time data, and the display means displays the current time on the display and the power failure occurrence display on another display.

[Claim 5] When the power failure of the commercial power source is restored, the power failure detecting means detects the power recovery, and the data reading means reads the current time data and the power failure data from the semiconductor nonvolatile memory.

The time counting means restarts the time counting from the time corresponding to the read current time data, and the display means displays the current time and blinks the current time display as a power failure occurrence display.

[0025]

【The invention's effect】

[Effects Common to Claims 1 to 5] Since the delay of the timepiece is only the power failure time, when the power failure time is short, the timepiece device
There is little effort to set the clock when the power is restored.

Since the timepiece device does not require a backup power source, the cost of parts can be saved.

[Effects peculiar to claim 1] By checking whether or not the power failure occurrence display is displayed on the display, the user can easily recognize the occurrence of the power failure and it is necessary to adjust the clock. You also know if there is.

[Effect peculiar to claim 2] By confirming whether or not the power failure occurrence display is displayed on the display unit, the user can easily recognize the occurrence of the power failure. In addition, when a power failure occurs and the power is restored, the display unit displays the power failure occurrence display instead of the current time, so that the power failure can be seen at a glance. Further, when a power failure occurs and the power is restored, the display state of the display unit is different from the normal time when there is no power failure, so that the user does not forget to adjust the delayed clock.

[Effect peculiar to claim 3] By looking at the display device, the user can easily know whether or not a power failure has occurred. When a power failure occurs and the power is restored, the current time and the power failure occurrence display are alternately displayed on the display, so that the power failure can be seen at a glance. Further, when a power failure occurs and the power is restored, the display state of the display unit is different from the normal time when there is no power failure, so that the user does not forget to adjust the delayed clock.

[Effect peculiar to claim 4] By confirming whether or not the power failure occurrence display is displayed on another display, the user can easily recognize the occurrence of the power failure and adjust the clock. You also know if you need to do it.

Since the power failure occurrence display is displayed on another display, the display content of the power failure occurrence display can be freely selected.

[Effect peculiar to claim 5] By checking whether or not the power failure occurrence display is displayed on the display unit, the user can easily recognize the occurrence of the power failure and need to adjust the clock. You also know if there is.

[0033]

The first embodiment of the present invention (corresponding to claim 2) is as follows.
A description will be given based on FIGS. 1 and 2. As shown in FIG. 1, the timepiece device A used for the gas warm air heater includes a control circuit 1 having a microcomputer 11, an E ² PROM ² which is a semiconductor nonvolatile memory, a display device 3, and a power failure occurrence confirmation means. A certain clock setting switch 4 and a rectified voltage detection circuit 5 are provided.

The control circuit 1 comprises a clocking means, a display means, a power failure detecting means, a data storing means, and a data reading means, and operates according to the flow chart shown in FIG. 2 when a power failure occurs and when power is restored.

The control circuit 1 is stabilized by a power supply circuit (not shown) in which the primary side of the power supply transformer is connected to a commercial power supply and the rectifier circuit and the stabilizing circuit are connected to the secondary side of the power supply transformer. Voltage is always supplied. When a power failure occurs, the power supply for operating the microcomputer 11 is maintained by the capacitor of the power supply circuit for about 0.5 seconds.

The timekeeping means measures the current time at the time of non-power failure and restarts the timekeeping based on the current time data read from the E ² PROM ² when the power failure occurs and the power is restored.

The display means displays the current time measured by the time measuring means on the display during non-power failure, and displays the power failure occurrence display on the display 3 when the power is restored after the power failure occurs. Furthermore,
When the clock setting switch 4 is pressed, the power failure occurrence display is turned off and the current time (delayed) is displayed on the display unit 3.

The power failure detecting means determines whether or not the commercial power source has a power failure based on the fall of the divided voltage output 51 of the rectified voltage detecting circuit 5.

When a power failure occurs, the data storage means stores in the E ² PROM ² the current time measured by the time measuring means and the fact that the power failure has occurred in the predetermined operating state of the heater as the current time data and the power failure data.

The data reading means reads the current time data and the power failure data from the E ² PROM ² when the power is restored after the power failure.

The E ² PROM ² has, for example, a structure in which a floating gate is formed in an insulator of SiO ₂ and the charge is accumulated in the gate by utilizing the tunnel effect. Non-volatile storage.

The display 3 has a numeral, "-",
It is an LED that can display ".", ":", Etc., and the energization is controlled by the control circuit 1. In the case of non-power failure, the current time is displayed when the timer is on standby or stopped, and the set temperature is displayed during operation.

The clock setting switch 4 is a normally open tact switch and sends an ON signal 41 when pressed. This clock setting switch is used not only for setting the clock, but also for notifying the control circuit 1 that the power failure occurrence display has been confirmed.

In the present embodiment, the rectified voltage detection circuit 5 is a circuit for rectifying and dividing the AC voltage on the secondary side of the power transformer, and the divided output 51 is input to the control circuit 1.

Next, the operation of the control circuit 1 when a power failure occurs and when power is restored will be described based on the flowchart shown in FIG.

In step s1, if the power failure detecting means detects a power failure (YES), the process proceeds to step s2. If not (NO), the current operating state is maintained. still,
When a power failure occurs, the data of the set on time is erased and the on timer is turned off.

In step s2, when the gas warm air heater is in operation or waiting for a timer when a power failure occurs (Y
ES) proceeds to step s3 and is stopped (N)
O) advances to step s4.

In step s3, the data storage means stores the current time and the fact that the power failure has occurred in the E ² PROM ² as time data and power failure occurrence data (when the heater is not stopped), respectively.

In step s4, the data storage means E as the current time and the fact that the power failure has occurred at the time of the power failure as the time data and the power failure occurrence data (the heater is stopped), respectively.
² Store in PROM2.

When a power failure occurs, the output voltage from the stabilizing circuit that supplies power to the control circuit 1 does not fall below the operable range of the control circuit 1 (within 0.5 seconds), step s2, s3 and s4 are performed.

When the power failure of the commercial power source is restored, step S
At 1, the data reading means reads the time data and the power failure occurrence data from the E ² PROM ² , the time measuring means restarts the time counting based on the read time data, and proceeds to step S2.

In step S2, it is judged whether the gas warm air heater is not stopped (operating, waiting for a timer) or stopped immediately before the power failure based on the read power failure data.
If it is determined that the vehicle is not stopped (YES), the process proceeds to step S3, and if it is determined that the vehicle is not stopped (NO), the step S4 is performed.
Proceed to.

In step S3, the control circuit 1 causes the display 3
"00" (display of occurrence of power failure) is displayed on and the process proceeds to step S5.

In step S4, the control circuit 1 causes the display 3
"----" (power failure occurrence display) is displayed on, and step S
Go to 5.

In step S5, it is determined whether or not the clock setting switch 4 is pressed, and if it is pressed (YE
S), and proceed to step S6.

In step S6, the display of the power failure occurrence display is erased from the display unit 3, and the current time (the power failure time is delayed)
Is displayed on the display unit 3. In addition, the time data and the power failure occurrence data in the E ² PROM ² are erased.

In the above embodiment, the power failure occurrence display at the time of power failure is changed according to the operating state of the heating machine at the time of power failure. However, when the heating machine is in operation, an error is displayed first. After that, by operating the operation switch, the same display as the power failure occurrence display when the heater is stopped may be displayed.

Next, advantages of the timepiece device A of this embodiment will be described. [A] By checking the display device 3 for the presence or absence of a power failure occurrence display, it is possible to easily determine whether or not a power failure has occurred while the user is absent or sleeping.

When the power failure occurrence display is displayed, the user can understand that the clock is delayed and the warm air heater is stopped due to the power failure.

[A] Since there are two types of power failure occurrence indications: running or timer standby, and stopped, when a power failure occurs,
It is easy to see whether the gas warm air heater was in operation (including when waiting for a timer) or was stopped.

[C] At present, the power failure is from several minutes to at most 30 minutes. When a power failure occurs, the time data related to the current time is stored in E ² PROM2, and when power is restored, E ²
The time data is read from the PROM 2 and the time measurement is restarted from the current time corresponding to the read time data.

Therefore, the time setting switch 4 is pressed,
The current time displayed on the display 3 after the user has confirmed the occurrence of a power failure is only delayed by the power failure time, so the number of times the "UP" switch (not shown) is pressed for time adjustment can be small. .

[D] Since the backup power supply, such as a capacitor, which keeps the control circuit 1 operating during a power failure, is not required, the cost of parts can be saved and the battery need not be replaced.

FIG. 3, FIG. 4, FIG. 5, and FIG.
Of the timepiece device according to the embodiment (corresponding to claim 1), the third embodiment (corresponding to claim 3), the fourth embodiment (corresponding to claim 4), and the fifth embodiment (corresponding to claim 5). It is a flow chart which shows each operation.

The timepiece device of each of the above embodiments also has the above [a],
The same effect as [D] is achieved.

[Brief description of drawings]

FIG. 1 is a block diagram of a timepiece device according to a first embodiment of the invention.

FIG. 2 is a flowchart showing the operation of the timepiece device.

FIG. 3 is a flowchart showing the operation of the timepiece device according to the second embodiment of the present invention.

FIG. 4 is a flowchart showing the operation of the timepiece device according to the third embodiment of the present invention.

FIG. 5 is a flowchart showing the operation of the timepiece device according to the fourth embodiment of the present invention.

FIG. 6 is a flowchart showing an operation of the timepiece device according to the fifth embodiment of the present invention.

[Explanation of symbols]

A clock device 1 control circuit (power failure detection means, data storage means, data reading means, display means) 2 E ² PROM (semiconductor nonvolatile memory) 3 indicator 4 clock setting switch (power failure occurrence confirmation means)

Claims (5)

[Claims] 1. A power supply for operation is supplied via a commercial power supply, and a time keeping means for measuring the current time, and a power supply for operation via a commercial power supply,
In a timepiece device having a display means for displaying the current time measured by the timekeeping means on a display, a semiconductor non-volatile memory in which stored data is electrically rewritable, and a power failure detection means for detecting a power failure of a commercial power supply, When the power failure detection means detects a power failure of a commercial power source, a data storage means for storing the current time measured by the time measuring means and the fact of the power failure in the semiconductor nonvolatile memory as current time data and power failure data, When the power failure detection means detects a power recovery of the commercial power source, a data reading means for reading the current time data and the power failure data from the semiconductor nonvolatile memory is provided, and when the power failure detection means detects a power recovery, the current read data is read. Based on the time data, the time counting means restarts the time counting, and the display means displays the current time and a power failure occurrence display on the display. Watch device according to claim that that. 2. An electric power for operation is supplied via a commercial power source, and a time measuring means for measuring the present time, and an electric power for operation are supplied via a commercial power source,
In a timepiece device having a display means for displaying the current time measured by the timekeeping means on a display, a semiconductor non-volatile memory in which stored data is electrically rewritable, and a power failure detection means for detecting a power failure of a commercial power supply, When the power failure detection means detects a power failure of a commercial power source, a data storage means for storing the current time measured by the time measuring means and the fact of the power failure in the semiconductor nonvolatile memory as current time data and power failure data, When the power failure detection means detects the recovery of commercial power, a data read means for reading the current time data and the power failure data from the semiconductor nonvolatile memory and a power failure occurrence confirmation means for confirming the power failure are provided, and the power failure detection means When the power recovery is detected, the display means displays a power failure occurrence display on the display unit and the time measuring means reads out the present time data. Resume counting based on the data, the confirmation of a power failure is made, the display means timepiece device, characterized in that switches the display of the display unit to display the current time. 3. When the power failure detecting means detects a power recovery,
The timepiece device according to claim 1, wherein the display means alternately displays the current time and the power failure occurrence display on the display. 4. The timepiece device according to claim 1, wherein another display is newly provided, and when the power failure detection means detects a power recovery, the display means displays a power failure occurrence display on another display. 5. When the power failure detecting means detects a power recovery,
2. The timepiece device according to claim 1, wherein the display unit displays the current time and blinks the current time display as a power failure occurrence display.