JPS631464Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a timer device used for time control of air conditioners, etc. More specifically, the operating time can be changed at any time with one operation, and the remaining time can be easily displayed. The present invention relates to a timer device that can be configured to perform a timer operation.

FIG. 1 is a block diagram of a conventional timer device of this type, showing a case where the air conditioner is turned off after an arbitrarily set time has elapsed.
1 is a variable resistor, 2 is a capacitor, 3 is a clock generation circuit, 4 is a counting circuit composed of multistage flip-flops (hereinafter referred to as F/F) of 4a to 4h, and 5 is a counting circuit when the timer device starts operating. 4 is a start switch for resetting F/Fs 4a to 4n, 6 is a mode changeover switch, and 7 is an output circuit for turning on or off the power to the air conditioner 8, which is composed of relays and the like. 20 is a timer device composed of 1 to 7. FIG. 2 is a front view showing the arrangement of the time setting section of this timer device using a sliding variable resistor.

Next, the operation of the conventional timer device will be explained. When the mode selector switch 6 is switched to the timer mode side and the start switch 5 is turned on, the counter circuit 4 is reset and starts counting the clocks input from the clock generator circuit 3. When counting is completed, the F/F 4n at the final stage becomes "H", and an H signal is outputted to the output circuit 7 via the mode changeover switch 6.
When the output circuit 7 receives this H signal, it turns off the power to the air conditioner 8 and stops its operation.

In this way, in the conventional timer device, the operating time of the timer device is set by changing the period of the clock, which is the time reference, using the variable resistor 1, and counting the number of clocks by a fixed number using the counting circuit 4. It is composed of

The conventional timer device configured in this way is
The timer setting time is set using a light emitting diode (LED)
It is difficult to display the elapsed time of the timer, and to change the set time while the timer is operating, it is necessary to adjust the variable resistor 1 and operate the start switch 5. The problem was that it was cumbersome to handle.

This idea was made to eliminate the drawbacks of the conventional ones as mentioned above, and when the timer is running, the remaining time of the timer is always displayed on the LED.
Another object of the present invention is to provide a timer device that allows the timer setting time to be changed with a single soft touch operation even when the timer is in operation.

An embodiment of this invention will be described below with reference to FIG. In the figure, 9 is a change switch for inputting changes to the timer time limit setting, 10 is a change timing circuit that sends a change timing signal, 11 is a set time storage circuit composed of a presetable up/down counter, etc., and 12 is a unit time. Generates a pulse every minute (in this example, every minute)
a first counting circuit which counts the output of the clock generating circuit 3 and outputs a signal every hour; Counting circuit, 1
4 is a decoder for decoding the output of the second counting circuit 13, and 15 is a timer time display device for displaying the remaining time of the timer, which is comprised of issuing diodes 15a to 15e. Reference numeral 16 indicates a current limiting resistor; 17 indicates the first and second counting circuits 12 and 13 when switching between timer operation and continuous operation according to the output of the mode changeover switch 6;
This is a mode switching circuit that outputs set and reset signals.

Next, this operation will be explained.

First, when the power of this device is turned on, the set time memory circuit 11 outputs the preset terminals P ₁ , "H", P ₂ ,
As a result of being connected to “L”, P ₃ and “H”, “1”
is preset. Next, in response to a timer operation command from the mode changeover switch 6, that is, the switch is turned on, the mode changeover circuit 17 connects the output circuit 7 to the timer mode, and sends the single pulse signal Ps to the first counting circuit 12 and the second counting circuit. The signal is sent to the circuit 13. The second counting circuit 13 uses this pulse signal Ps
is received as a data set signal, and the memory data "1" of the set time storage circuit 11 is read. Further, the Ps signal resets the count value of the first counting circuit 12. As a result, the timer's time counting starts from "0", and the display system starts from "0".
The value of the counting circuit 13 is decoded by the decoder 14 and the light emitting diode 15 of the timer time display device 15 is
A is lit and "1H" is displayed.

Next, the operation of changing the timer time will be explained. By turning on the change switch 9 once, the change timing circuit 10 generates a single pulse signal and increments the count value in the setting memory circuit 11 by +1. At the same time, this is input as a set signal to the second counter circuit 13, and the data in the setting memory circuit 11 with +1 added is read into the counter circuit, and this data is passed through the decoder 14 to light the light emitting diode 15a, which displays "2H". At the same time, the single pulse signal from the change timing circuit 10 is input to the first counter circuit 12, which clears the count value and starts counting from the beginning, thus starting the operation of the two-hour timer.

Furthermore, if the change switch 9 is kept on, the change timing circuit 10 generates one pulse signal every 0.5 seconds, and as mentioned above, the set time is increased by +1, and the display also shows "3H". → Increases from “4H” to “5H”.
When the set time reaches 5H, this set time memory circuit 1
1 is next counted as “1H”, and as a result, the timer time change is from “1H” to
Changes cyclically from “5H” to “1H”.

When the settings are changed in this way, the first counting circuit 12 counts the one-minute signal from the clock generating circuit 3, and when it counts 60, it counts out and sends a carry signal to the second counting circuit 13. This signal subtracts -1 from the count value of the counting circuit 13, and accordingly, the timer time display is changed from, for example, "5H" to "4H" to indicate the remaining time "4H". In this way, as the first counting circuit 12 counts out, the count value of the second counting circuit 13 is subtracted by -1, and becomes "0" after 5 hours. This "0" causes the second counting circuit 13 to send an off signal to the output circuit 9 to turn off the air conditioner 8.

Furthermore, when the mode changeover switch 6 is turned off during timer operation to enter continuous operation mode, the mode control circuit 17 sends out one pulse signal _PR , the first counting circuit 13 is reset, and the display is accordingly The system also displays an off status.

FIG. 4 is a block diagram of the above-described embodiment device configured with a microcomputer.
stores programs on a microcomputer
ROM, memory can be read and written freely
It is integrated into a single chip and includes RAM, arithmetic circuits, etc. 19 is an operation switch for turning on or off the air conditioner 8; a timer time change switch 9;
A soft touch switch is also used.

Next, the operation will be explained using the flowchart shown in FIG. The memory in the microcomputer 18 is used for the following purposes. Hereinafter, the symbols of the memory will be explained, and then the processing within the microcomputer 18 will be explained in detail.

Timer M: Stores the set timer time.

Operation F: Memorizes that it is timer operation or continuous operation.

hrCNT...Counts and stores the number of clocks.

Timer CNT: The set timer time is memorized and decremented every hour.

First, the power supply (+E) of the microcomputer 18
The contents of each memory mentioned above are cleared at the time of input. Next, 1 is stored in timer M. This is intended to display the set 1 hour in the timer operation mode after the power is turned on, without having to set the time. Next, check operation F at _T1 . If operation F is “1”, that is, switch 19 is activated during operation.
If is pressed (turned on), the operation will stop, so
At _T11 , "L" is output to 06, and the air conditioner 8 is stopped via the output circuit 7. At the same time, the operation F is reset (set to 0) and returns to _T1 . Driving F is “0”
And if switch 19 is not pressed,
Return to _T1 and detect the state of switch 19 from terminal 12. If the switch 19 is pressed in this state, the program enters _T3 , sets the operation F (sets it to 1), outputs "H" to 06, and drives the air conditioner 8 via the output circuit 7. If the mode selector switch is in timer mode at T ₄ , it will enter T ₅ . At this time, if it is continuous mode, it returns to _T1 . In _T5 , the setting time stored in timer M is
Store that number in CNT. Reset hrCNT and display timer CNT ( _T6 ). Timer CNT is
The number from 0 to 5 is stored and when it is "0", all "L" is output to 01 to 05, and the light emitting diodes 15a to 15
When it is "1", light emitting diode 1 is turned off, so that e is turned off.
It is decoded so that only 2 lights up. time
Similarly, when CNT is 2 to 5, the light emitting diode is 15
b to 15e are decoded to light up, respectively. Then, at _T7 , the state of the change switch 9 is detected from _{the third} terminal, and if the switch 9 is "on", that is, there is a change in the set time, the process jumps to _T8 . At this time, if "5" is stored in timer M, timer M is changed to 1; otherwise, timer M is set to "1".
To increase. After changing the timer M, return to _T5 , transfer the changed set time in the timer M to the timer CNT, and display the number in the same manner as above. It is assumed that the switch 9 cannot accept only one change unless it is turned off once after being pressed. If the switch 9 remains in the "off" or "on" state, the circuit enters _T9 , detects the clock from the clock generation circuit 3 from _one terminal, and if the clock is "H", sets hrCNT to "1".
To increase. If hrCNT is not "60" after being increased by "1", the process jumps to (T ₁₀ ) and returns to (T ₁ ) after confirming whether the operation mode has been switched during timer operation.
If hrCNT counts "60", one hour has passed, so "1" is subtracted from time CNT, and if the result of the subtraction is not "0", the process returns to _T1 as above. If the result of the subtraction is "0", the timer time has expired, so the program jumps to _T11 , resets the operation F, outputs "L" to 06, and stops the operation of the air conditioner 8.

During continuous operation or timer operation, since the operation F is "1", it jumps from T ₁ to T ₂ and the switch 19 is "on", that is, unless there is a stop command, T ₄
Enter.

As is clear from FIG. 4, after the power to the microcomputer 18 is turned on, "1" is always stored in the timer M, and operation is then started by the switch 19. If the timer operation mode is selected, the set time is 1. Timer operation starts immediately after displaying the time.
After one hour has elapsed, the operation of the air conditioner 8 is stopped. When changing the set time while the timer is running, each time the switch 9 is pressed, the set time is increased by one hour and the time is displayed. If the switch 9 is pressed after setting the set time to 5 hours, the set time is changed to 1 hour. In this way, the setting time is changed cyclically. Immediately after the change, the hrCNT, which counts one hour, is reset, so if the set time has elapsed from the time of the change, the air conditioner will stop operating. Further, the remaining time is always displayed during the timer operation, and once the time has been set, the set time is displayed when the timer operation is started unless the setting is changed.

In addition, in the above example, a configuration was shown in which one hour is stored when the power is turned on, and a maximum of five hours can be set in one-hour increments. It is not limited.

In addition, in the example, the setting time is changed by increasing by one hour each time the switch is pressed.
It may be increased or decreased by 30 minutes,
Furthermore, the time period for which the switch is pressed may be increased or decreased by a unit time every time a certain period of time elapses. Furthermore, if the configuration is such that the above two setting methods can be selectively performed, the operability can be further improved.

As described above, according to this invention, the timer time can be set and changed with a simple operation using only a soft touch switch. Furthermore, since the remaining time of the timer can be displayed using a highly visible device using an LED or the like, a timer device having excellent operability and excellent display function can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the configuration of a conventional timer device, Fig. 2 is a front view of the operating section of the timer device shown in Fig. 1, and Fig. 3 is a block diagram of an embodiment of the present invention. FIG. 4 is a block diagram of the embodiment shown in FIG. 3 realized using a one-chip microcomputer, and FIG. 5 is a flow diagram relating to the processing of the embodiment shown in FIG. In the figure, 3 is a flock generation circuit, 6 is a mode changeover switch, 7 is an output circuit, 8 is an air conditioner,
9 is a change switch, 11 is a set time memory circuit, 1
2 is a first counting circuit, 13 is a second counting circuit, 15 is a light emitting diode, and 19 is an operation switch.
Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A setting/change switch for setting and changing the timer time, a timing circuit that outputs a pulse signal according to the operating time of this switch, and a time limit signal that sequentially adds the above pulse signals and stores a time limit signal representing the timer time limit for a unit time. a timer time setting storage device, a second counting circuit having a reset terminal and reading the time limit signal and storing the set timer time when the switch is operated; a clock that sends out a clock signal at intervals shorter than the unit time; generation circuit,
a first counting circuit that counts the clock signal and outputs a pulse signal to the second counting circuit to subtract the counted value every time the unit time is reached; a decoder that reads the contents of the second counting circuit; A remaining time display device that is driven by this decoder and displays the remaining time corresponding to the read content, and a timer time end signal that is output when the content of the second circuit becomes "0" indicates the operating state of the load. The second counting circuit is reset in response to the operation of the switch, and adds the time signal in response to the pulse signal without being reset in response to the operation of the switch. A timer device designed to