JPS5841381A - Program timer - Google Patents

Abstract

PURPOSE:To improve the operability with a very careful control with effective utilization of various switches by arranging a manual switch, a week program switch and a keyboard for semiautomatic operation. CONSTITUTION:A keyboard 6 is used to input various data to a central processing unit 1 in addition to numerals and weekday, writes and erases program data in a program area of an RAM3 corrects time and to perform a semiautomatic operation. A week program switch 10 is kept off at the normal mode. To stop a desired weekday action, a corresponding weekday switch is turned on. When the switch is turned to the interruption mode, all outputs for the weekday are stopped. When program operating a specified equipment alone, channels for unnecessary equipment are turned off with a manual switch while the switch 10 is set to the normal mode.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a program timer characterized by a load control method.

2. Description of the Related Art Program timers are known that can drive and stop several types of loads at specified times for each day of the week. With such a program timer, if you need to start driving before the preset driving time or if you want to temporarily stop the load, you can use the key switch to set the program to change the final set time. I needed to. Furthermore, even when it is not necessary to drive a load only on a specific day, such as a public holiday, it is necessary to erase the settings for that day using a key switch, which is quite inconvenient in use.

The present invention aims to eliminate the drawbacks of the conventional program timer, and provides a program timer that is easy to use and has good operability.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a program timer showing an embodiment of the present invention, and FIG. 2 is a front view showing its panel surface. In these figures, an arithmetic processing unit (hereinafter referred to as CPU) 1 is, for example, a 4-bit microprocessor, which executes programs according to data stored in read-only memory (hereinafter referred to as ROM) 2 and random access memory (hereinafter referred to as RAM) 8. It controls the timer.

In addition to a program area consisting of a large number of steps (25 steps in this case) containing data for driving the load, RAM 8 also contains a 4-bit output buffer for controlling the output of the four channels, and a semi-automatic operation described below. Contains a 4-bit semi-automatic flag and a key flag that are set at certain times. The CPU 1 is connected to a clock pulse generation circuit 4 that drives the microprocessor and provides a time signal, and also causes the CPU 1 to perform interrupt processing at predetermined intervals, for example, every 2.5 mS. It is used for writing and erasing program data in the area, correcting the time, and performing semi-automatic operations as described later.

The output of the CPU 1 is given to a time display section 7, a day of the week display section 8, and a setting output monitor 9. The time display section 7 is a four-digit numerical display that displays the current time, and also displays the channel number, on/off data, and program time when setting a program. Day of the week display section 8
As shown in FIG. 2, it is composed of seven light emitting elements corresponding to each day of the week, and displays the current day of the week as well as the day of the week to be set when setting a program. The setting output monitor 9 is a display device consisting of light emitting elements for four channels that displays the channel number set at the time of program setting. In the present invention, as shown in FIG. 2, a weekly program switch 10 is provided which is made up of a group of switches that can be turned on and off for each day of the week. The weekly program switch 10 is turned off when the program timer is to operate according to a preset program (hereinafter referred to as normal mode), and when it is desired to stop operation on a desired day of the week, the switch for the corresponding day of the week is turned on (hereinafter referred to as OFF mode). mode). When this switch is set to off mode, all outputs for that day of the week are stopped. Further, in the present invention, the control output of the CPU 1 is given to the relay section 12 and the output monitor 18 via the automatic/manual switching section 11. As shown in Fig. 2, the automatic/manual switching section 11 consists of a changeover switch that switches the circuit between "on", "off", and "automatic" for each channel, and only when the circuit is set to "automatic", the CPU The output of 1 is given to the subsequent stage, and in the case of "ON" or "OFF", a signal is given from the power supply.Relay part 1
2 consists of four relays that operate or stop the equipment connected to this program timer, and output monitor 1
8 is a light emitting element that displays the operating state of each channel. The power supply circuit 14 is configured to automatically switch to battery power in the event of a power outage.

FIG. 8 shows the stored contents of l steps constituting the program area of the RAM 8, which includes the day of the week, the time in minutes, the channel number, and the on/off data of the load to be controlled at that time.

Next, the operation of the program counter of this embodiment will be explained with reference to the flowcharts of FIGS. 4 and 6. The number indicated using a leader line in the flowchart is CPU 1.
This figure shows the operation steps of . In FIG. 4, as mentioned above, the interrupt signal generator 6 outputs a signal to the CPU every 2.6 msec.
An interrupt routine in which an interrupt is applied to 1 will be explained. When an interruption occurs, first, in step 20, the data of the weekly program switch 10 for that day of the week is read. Subsequently, in step 21, it is checked whether there is any key force on the keyboard 6. If there is no key power, return to the main routine, if there is key power, set the key flag, and after reading the key power (step 22.28)
, return to the main routine. In this way, the input will be given to the CPU 1 almost simultaneously with the pressing of the keys on the keyboard 6. As shown in Figure 5, in the main routine, initial settings are performed in step 24 after the start of the operation. This is to prevent the set time and the current time from immediately coinciding with each other at the start of operation, resulting in erroneous operation. Setting the time 6
Since the process is performed every minute, the elapsed time of one minute is checked in step 26, and only if one minute has elapsed, the step address is set to 1 (step 26). Continuation (1) In step 27, the day of the week and time data of the step address 1 are compared with the current day of the week and time. If they match, the channel number and on/off data of the step address are read (step 29). Write the reading result of that channel (output of that channel) <tufa 1 (step 80). Steps 27 to 80 are repeated until all step addresses of this program timer, that is, step address 25, are checked, and all steps in the program area are checked. This indicates the state of the output buffer and semi-automatic flag of the fourth channel.If the fourth channel is "1" (ie, on), and if it is off, the semi-automatic flag of that channel is reset in step 88.Subsequently, in step 84
Then, the state of the weekly program switch 10 is checked. If this is on, that is, in the off mode, it is checked in step 85 whether the semi-automatic flag is set for each channel. According to the setting of the weekly program switch 10 which cuts off the load if the semi-automatic flag is not set, the output buffer 7 of that channel is set in step 86.
is set to “0”, and if the semi-automatic flag is set, proceed to step 8.
At step 7, the corresponding channel of output buffer 1 is set to "l", and then at step 88, the output is sent out. This allows the load of each channel to be opened or closed according to the state of the 4-bit output buffer. In the case of FIG. 6(a), unless the weekly program switch 10 on that day is in the off mode, the fourth channel is in the operating state. Subsequently, in step 89, the state of the key flag is checked. If the key flag is not set, the process returns to step 26 and the above-described operation is repeated.

If you set the program switch IO to off mode for that day and input the input to turn on the first channel by semi-automatic operation, the key flag is set, so proceed from step 89 to step 40 and set the key flag. is cleared. Subsequently, in steps 41 and 42, it is checked whether it is turned on or off by semi-automatic operation. If semi-automatic is turned on, the semi-automatic flag of the designated channel is set (step 48), and if semi-automatic is turned off, the semi-automatic flag of the designated channel is reset.

In this case, since the first channel is set to be on, only the first channel of the semi-automatic flag is set to 1, as shown in FIG. 6(b). After that, various key processing (
After completing step 46), return to step 25. From step 25, processing is performed according to the routine described above, and from step 84 to step 86. Here the first
Since "1" is set in the semi-automatic flag of the channel, 1" is also set in the corresponding first channel of the output buffer 7 in step 87. FIG. 6(b) shows this state, and the output buffer's Output is controlled based on content.

Assuming that the preset program is set so that the first channel is then turned off, when that time comes, in step 80, the output "θ" is written to the corresponding channel in the buffer. Figure 6 (C)
indicates the output buffer in this state, and if a certain channel of the output buffer is designated as off in step 92, the semi-automatic flag for that channel is reset (step 88). The semi-automatic flag in FIG. 6(c) shows this state, and the flag that was set on the first channel is changed to "0" by the program and turned off. In this way, the semi-automatic flag will be "θ" for each channel, so the output buffer will also be all 0".
Therefore, the output of each channel is cut off, similar to when the weekly program is simply turned off mode.

In addition, if the switch is to be turned off before the operation stop time according to the program, an input for semi-automatic turn-off may be given, or the automatic/manual switching section may be turned off manually. This allows you to stop the device regardless of the program.

As described above in detail, the present invention is provided with a manual operation switch and a weekly program switch, and is further configured to perform semi-automatic operation using the keyboard. Therefore, when there is no need to operate the device, such as on a holiday, driving can be easily stopped by simply setting the weekly program switch for that day to the off mode. Also in that case, it is possible to operate the device by semi-automatic operation and then to stop the device operated by the program or semi-automatic operation. Furthermore, if you wish to have only a specific device operate according to the program, you can set the weekly program switch to the normal mode and turn off the channels of unnecessary devices using the manual operation switch. By utilizing various switches in this way, fine-grained control becomes possible.
An easy-to-use program timer is obtained.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the program timer of the present invention, FIG. 2 is a front view showing its panel surface, FIG. 8 is a conceptual diagram showing the contents of one step in the program area of RAM 8, and FIG. 4 and 6 are flowcharts showing the operation of this program timer, with FIG. 4 showing an interrupt subroutine and FIG. 6 showing a main routine. Figure 6(a)
, Φ), (C) shows the state of output buffer 1 and semi-automatic flag. DESCRIPTION OF SYMBOLS 1... CPU1B... RAM, 5... Clock pulse generation circuit 16... Keyboard, 10... Weekly program switch, 11... Automatic/manual switching unit, 1
2...Relay part, 18...Output monitor
(Representative Patent Attorney Yoshiki Okamoto (and 1 other person) Figure 5 Figure 6 (a) Output 1 Fa Erosion 1 Prevention flag Figure 6 (b) Output pigeon V FuT semi-automatic flag. fil(c)

Claims (2)

[Claims] (1) A storage means having an area for storing in advance data for driving and stopping a load, the day of the week, and the time, a signal generating means for generating a time signal, and counting the time and day of the week from the signal generating means and the counted value thereof. and arithmetic processing means for controlling the load based on the data when the day of the week and time data in the storage means match, a weekly program switch that stops the output of the program timer for each day of the week; An automatic/manual changeover switch ζ for switching between control by a program timer and manual control is provided, the storage means is provided with a flag area for semi-automatic operation, and when the semi-automatic flag is set, the weekly program switch is in an operating state. A program timer characterized in that the load is operated even when the load is in use, and the load is stopped by a program or manually. (2) The program timer according to claim 1, wherein the program timer has a plurality of channels, and the automatic/manual changeover switch is provided for each channel.