JPH07229981A - Electronic time switch - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain an electronic time switch that does not require a means for counting the power failure time and clarifies the stop point of the additional energizing function regardless of the power failure occurrence time. [Configuration] The energization time and energization start time are set in advance by the setting unit 15, and the control unit 14 opens and closes the opening / closing unit 12 based on this. If a power failure occurs during the set energization time, memory A
The memory B (17b) is set when (17a) is set and the power failure continues in this state until the next power-on time starts. Further, in this state, if the power failure continues until the power distribution end time, the memory C (17c) is set, and the additional power distribution function is stopped at this time.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to an electronic time switch.

[0002]

2. Description of the Related Art When using, for example, an electric water heater, inexpensive night power is often used. At this time, since power is supplied to the electric water heater during the nighttime power time period, the energization start time and the energization time are set in advance, and when the energization start time comes, power is supplied for the energization time set in the electric water heater. Electronic time switches may be used. Generally, in an electronic time switch, if there is a power failure during the energization period, there will be problems such as no boiling water, so power failure compensation during the energization time period (hereinafter referred to as additional energization function) There is something to do. Regarding the additional energizing function, it is dangerous to energize the additional energizing even if it is not installed during the energizing time when installed after long-term storage.
As shown in 5-67197, if a means for counting the power failure time is provided and there is a power failure time of (24 hours + energization time),
Some stop the additional energization function.

A schematic diagram of this is shown in FIG. In the figure,
11 is an electronic time switch, 12 is an opening / closing unit for supplying electric power to the electric water heater, 14 is a control unit having a clock function, according to the energization time and the energization start time set by the setting unit 15. , The opening / closing unit 12 is operated periodically every day.
13 is a power failure detection unit that detects a power failure of the power supply for supplying electric power, and 16 is an additional energization time memory that stores the power failure time during the energization time period. The additional energization time is sufficient for one energization time. Therefore, the time until the energization time is stored and is cleared at the start time of the normal energization time zone.

On the other hand, 101 is a power failure time integration counter for integrating the power failure time, 102 is a memory for storing the stop of the additional power supply function, and when set, the additional power supply time memory
The additional energization function is stopped by clearing 16 or by prohibiting the additional energization by the control unit 14.

Further, the power failure time integrating counter 101 and the memory
102 operates in the configuration of FIG. That is, the power failure time integration counter 101 is a counter that also counts power failure times other than the energization time zone, and is reset by power recovery. In addition, the memory 102 that stores the stop of the additional energizing function is a power failure time integration counter 101.
Is set when a preset value of (24 hours + energization time) has been set in advance, and is reset by power recovery.

Such an electronic time switch operates as shown in FIG. 12 with respect to additional energization. That is,
(A) is the operation with a normal power supply, and shows the power supply status of the output side of the time switch with or without energization.
The output is energized for the energization time set in the time cycle. (B) is when there is a power outage during the energization period,
The power failure time is stored as the additional energization time, and the output is energized by adding after the end time of the energization time after power restoration. (C) is a case where there is a long power failure, the power failure time integration counter 101 exceeds the preset value, the memory 102 is set, and power is restored when additional power has been stopped. It has not been. (D) shows a case where the additional energization is restored. Since the additional energization is restored at the same time as the power restoration, if there is a power failure during the energization period and the additional energization is restored and then there is a power failure, the power failure from that point. Is remembered and additional power is supplied after the power is restored. In this case, the additional energization is performed from the middle of the energization time zone, so the additional energization is performed, but the set energization time is not compensated.

[0007]

However, in such an electronic time switch, a means for counting the power failure time is required to stop the additional power-on function, and the timing for stopping the additional power-on function is a power failure. Since it was calculated from the time point, the time point at which the additional power supply function was stopped was not known unless the time point at which the power failure occurred was clear.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electronic time switch which does not require a means for counting the power failure time and which makes clear the stop time point of the additional energizing function regardless of the power failure occurrence time point.

[0009]

In order to achieve the above-mentioned object, the present invention provides a method in which, when a power failure occurs in an energization time zone determined by a preset energization start time and energization time, the energization time ends after the power failure time. Alternatively, in an electronic time switch having a control means for performing power outage compensation after power recovery and stopping the power outage compensation when the power outage continues for a predetermined time, the control means is set when a power outage occurs in the energization time zone. A first control unit that is reset by power recovery, and a second control unit that is set at the power-on start time of the next power-on time zone while the first control unit is set and is reset by power recovery
And a third control unit which is set at the time when the second control unit is set and at the energization end time of the next energization time zone, and the third control unit is set. Then, the electronic time switch is characterized in that the power failure compensation is stopped.

[0010]

In such a structure, the first control section is set when a power failure occurs in the energization time zone, and in this state, the second control section is set at the energization start time of the next energization time zone. . The third control unit is set when the energization end time arrives with the first control unit and the second control unit set, and stops the power failure compensation when the third control unit is set. Therefore, the means for counting the power failure time is not required, and the time when the additional energization function is stopped can be clarified.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. It should be noted that the same components as those in the related art are designated by the same reference numerals and the description thereof will be omitted. FIG. 1 is a block diagram of an electronic time switch showing an embodiment of the present invention, and FIG. 2 is a memory operation explanatory diagram of FIG. In these figures, instead of the additional energization time memory 16 of the conventional electronic time switch shown in FIG. 10, an energization time counter 16a that counts the time from the energization start time and a time excluding a power failure from the energization start time are shown. An energization time counter 16b for counting time is provided. That is, when the above-mentioned additional energization function is stopped (when there is no power failure during the energization time), the energization ends when the energization time counter 16a reaches the set energization time, and during the operation of the above-described additional energization function (during the energization time). When there is a power outage), energization time counter 16
When b reaches the set energization time, energization ends.

Further, instead of the power failure time integrating counter 101 and the memory 102 of the conventional electronic time switch shown in FIG. 10, a memory A such as a flip-flop is used so as to determine whether to stop the additional energization or to recover from the stop. ~ D (17a ~ 17
c, 18). As shown in FIG. 2, these memories are a memory A (17a) that is set when a power failure occurs during the energization period and reset by power restoration, and a memory A (17a) that is in the set state and at the energization start time. Memory B (17b), which is set when the
b) is composed of the memory C (17c) which is set when the energization time zone end time is reached in the set state.
The additional energizing function shall be stopped when c) is set.

Further, when the memory C (17c) is set, the reset is released, and the memory D (18) is set by the power recovery. With the memory D (18) set, the energization start time is set. Then, the memory C (17c) is reset to recover from the stop of the additional energizing function.

Next, referring to the memory operation diagram of FIG. 2, the stop and return of the additional energizing operation will be described with reference to FIG. Figure 3
As shown in (a), if there is a power failure during the energizing time, memory A (17a) is set and memory A
The memory B (17b) is set at the start time of the next energization time zone with (17a) set. further,
When the end time of the energization time zone is reached with the memory B (17b) set, the memory C (17c) is set and the additional energization is stopped at this time, so that the additional energization is not performed even if the power is restored thereafter. . On the other hand, memories A (17a) and B (17
Since b) is reset by power recovery, if the power failure that occurred during the subsequent energization period continues until the end time of the next energization period, the memory C for stopping the additional energization is the same as described above. (17c) will be set.

Regarding the return operation of the additional energization, the memory D (18) in FIG. 3 is set to be reset when the additional energization is stopped and the power is restored in this state. When the start time of the energization time zone is reached with the memory D (18) set, the memory C (17
c) is reset to release the stop of the additional energizing function. That is, as shown in FIG. 3B, even if power is restored during the energizing time period and power failure occurs again during the energizing time period and additional power is restored, the additional energizing is not performed, and Restores the additional energizing function from a power failure.

As described above, the electronic time switch according to the present embodiment does not require a means for counting the power failure time in order to stop the additional energizing function, and can be configured by a simple memory such as a flip-flop. Moreover, when the end time of the energization time zone is reached, it is possible to determine whether to stop the additional energization based on whether or not the power outage continues from the previous energization time zone, so regardless of the power outage time, the next energization time zone The additional energizing function is stopped at the end time, and the operation is easy for the user to understand.

Further, since the memory D (18) is provided as a means for judging the return of the additional energization at the start time of the energization time zone, there is power recovery during the energization time zone and a power failure occurs again during the energization time. Even if the power is restored, there is no unnecessary additional energization that would cause additional energization. That is, in the conventional electronic time switch, if power is restored during the energization period and there is a power failure / recovery again during that energization period, additional electricity is immediately supplied after the restoration, which is wasteful. The electronic time switch can prevent such a situation and can effectively use electric power, which is economical.

On the other hand, the electronic time switch of the present invention is
It can also be modified as shown in FIG. That is, as shown in FIG. 5, the memory for stopping the additional energization is set when the power failure occurs during the energizing time and the memory A (17a) and the memory A (17a) are set in the set state. A memory E (41a) that is set when the end time of the energization time zone is reached and is reset by power recovery, and a memory E (41a) that is set when the memory E (41a) is in the set state and the end time of the next energization time zone is reached. Have F (41b) and memory F (41b)
Is to stop the additional energization when is set,
As shown in FIG. 6, the same effect as the above-mentioned embodiment can be obtained.

Further, it can be modified as shown in FIG. That is, as shown in FIG. 8, a memory G (71a) that is set when a power failure occurs at the start time of the energization time period and is reset by power recovery, and a memory G
(71a) has a memory E (71b) that is set when the end time of the energization time zone is reached in the set state.
When b) is set, the additional energization is stopped. In this case, as shown in FIG. 9, the additional energization is stopped when the power is entirely cut off during the energization period.

[0020]

As described above, according to the present invention, when a power failure occurs in an energization time zone defined by a preset energization start time and energization time, a power failure occurs after the energization time ends or after the power is restored. In an electronic time switch having a control means for performing compensation and stopping the power failure compensation when the power failure continues for a predetermined time, the control means is set when a power failure occurs in the energization time zone and reset by power recovery. And a second control unit for setting the first control unit in the set state and for setting the power-on start time in the next power-on time zone to reset the power-on state, and the second control unit. A third control unit which is set at a power supply end time of the next power supply time zone in a state where the power supply unit is set,
Since the power outage compensation is stopped when the control unit of is set, an electronic time switch that does not require a means for counting the power outage time and clarifies the stop point of the additional energizing function regardless of the power outage occurrence time is provided. Obtainable.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an electronic time switch showing a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a memory operation of [FIG. 1].

FIG. 3 is an operation explanatory diagram of FIG. 1;

FIG. 4 is a configuration diagram of an electronic time switch showing a second embodiment of the present invention.

FIG. 5 is a memory operation explanatory diagram of FIG. 4;

FIG. 6 is an operation explanatory diagram of FIG. 4;

FIG. 7 is a configuration diagram of an electronic time switch showing a third embodiment of the present invention.

FIG. 8 is an explanatory diagram of a memory operation of [FIG. 7].

9 is an explanatory diagram of the operation of [FIG. 7].

FIG. 10 is a configuration diagram of a conventional electronic time switch.

FIG. 11 is an explanatory diagram of a memory operation of [FIG. 10].

FIG. 12 is an operation explanatory diagram of FIG. 10;

[Explanation of symbols]

12 ... Opening / closing unit, 14 ... Control unit, 15 ... Setting unit, 16a, 16b ... Energization time counter 17a ... Memory A, 17b ... Memory B, 17c ... Memory C.

Claims (4)

[Claims] 1. When a power failure occurs in an energization time zone defined by a preset energization start time and energization time, power failure compensation is performed for the power failure time after the power-on time ends or after power restoration, and the power failure continues for a predetermined time. Then, in the electronic time switch provided with the control means for stopping the power failure compensation, the control means includes a first control section which is set when a power failure occurs in the energization time zone and reset by power recovery, and The second control is performed by setting the control unit of No. 1 and setting at the energization start time of the next energization time zone and resetting by the power restoration.
And a third control unit which is set at the time when the second control unit is set and at the energization end time of the next energization time zone, and the third control unit is set. Then, the electronic time switch is characterized in that the power failure compensation is stopped. 2. The control means includes a fourth control section which is released from reset when the third control section is set and is set by power recovery, and the fourth control section is set. The electronic time switch according to claim 1, wherein the third control unit is reset when the energization start time comes in the above state. 3. When a power failure occurs in an energization time zone determined by a preset energization start time and energization time, power failure compensation is performed for the power failure time after the power-on time ends or after power restoration, and the power failure continues for a predetermined time. Then, in the electronic time switch provided with the control means for stopping the power failure compensation, the control means includes a first control section which is set when a power failure occurs in the energization time zone and reset by power recovery, and The second control unit is set at the power-on end time of the power-on time zone while the control unit of No. 1 is set, and is reset by power recovery.
And a third control unit which is set at the time when the second control unit is set and at the energization end time of the next energization time zone, and the third control unit is set. Then, the electronic time switch is characterized in that the power failure compensation is stopped. 4. When a power failure occurs in an energization time zone determined by a preset energization start time and energization time, power failure compensation is performed for the power failure time after the power-on time ends or after power restoration, and the power failure continues for a predetermined time. Then, in the electronic time switch provided with the control means for stopping the power failure compensation, the control means includes a first control section which is set when a power failure occurs at the energization start time of the energization time zone and reset by power recovery. , And a second control unit which is set at the time when the first control unit is set and at the power-on end time of the power-on time zone, and when the second control unit is set, the power failure compensation is performed. An electronic time switch characterized by being turned off.