JPS6129043Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a program timer that controls each controlled device at various predetermined times.

Some conventional program timers have a plurality of built-in programs, but such program timers tend to malfunction when switching programs. In order to save memory capacity, each program has program A in Figure 1.
In other words, the controlled device is activated at time t ₁ , and the controlled device is activated at time t ₂ .
This is because it only describes the time at which the control state is changed, such as stopping the controlled device at a certain time, and the state of change in the control. That is, if program B operates the controlled device at time t ₃ (t ₃ < t ₁ ) and stops the controlled device at time t ₄ (t ₄ < t ₂ ), program A When switching from program B to time t ₅ (t ₄ < t ₅ < t ₂ ), the controlled equipment should have already stopped when program B is switched, but program B stops it. Since the command has already been issued at time _t4 , the stop command is not supplied to the controlled equipment, so it continues to operate and malfunctions.

The purpose of this invention is to provide a program timer that can prevent the above-mentioned malfunctions.

This invention will be explained below based on an embodiment shown in FIGS. 2 and 3. This program timer has two types of programs, A and B.
The B2 types of programs control 16 types of controlled devices in three types: start, stop, and operate for a certain period of time, and include controlled device data that defines the type of controlled device to be controlled, and the controlled device data that defines the type of controlled device to be controlled. Program A is a set of control data that determines the control state of a control device and time data that determines the time at which the control is performed, arranged in descending order of time.
Program B is stored in the memory 2 shown in the figure, and program B is stored in the memory 4 shown in the same figure. Now switch 6
If program A in memory 2 is specified by
When the comparison unit 8 compares the time signal with the time signal from the controller 10 and the time signal from the controller 12, and if the two match, the comparison unit 8 supplies a matching signal to the control unit 12. The control section 12 generates a sending signal to the decoder section 14, and the decoder section 14 supplies the decoded controlled device data and control data corresponding to the matched time data to the relay section 16, and the relay section 16 The controlled device 18 is controlled. Then, when the next time data matches the time signal, the same control is performed. Also, when program B in the memory 4 is specified, the comparison section 8, the clock section 10, and the control section 1
2. Similarly, the controlled device 18 is controlled by the decoder section 14 and the relay section 16.

When program A is switched to program B in memory 4 by switch 6 during execution of program A, state change monitoring section 20 supplies a search start signal to search section 22 and a comparison start signal to comparison section 8. Based on the search start signal, the search unit 22 reads the controlled device data and control data of the program B from the beginning, classifies them for each controlled device 18, and reads them into the search memory 24. Also, the comparator 8 is simultaneously connected to the memory 2.
The time data read out in order from 1 to 3 are compared with the time signal from the clock section 10, and when the latest time data and the time signal match after switching the changeover switch 6, a search stop signal is sent to the search section 22. occurs and causes the search to stop. At this time, the search memory 24 stores the closest control data for each controlled device 18 before the current time.
Note that while the search is being performed, the decoder unit 14
The control section 12 prevents output from being sent out. When the search is stopped, the search unit 22 supplies each controlled device data stored in the search memory 24 to the decoder unit 14. The decoder section 14 decodes the supplied data and supplies it to the relay section 16, and the relay section 16 controls the corresponding controlled device 18.

This operation will be explained based on FIG. 3, focusing on a certain controlled device. Now, program A operates a certain controlled device at time _t1 , stops it at time _t2 ,
Assume that program B operates this controlled device at time t ₃ and stops it at time t ₄ (t ₄ <t ₂ ). time t ₅
Suppose that program A is switched to program B at (t ₄ < t ₅ < t ₂ ), the search unit 22 searches for program B, but during this search, time data after time t ₅ and the current time t ₆ are searched. matches. At this time, the search memory 24 stores control data for stopping a certain controlled device, and the certain controlled device stops at time t ₆
be stopped. At the same time, another controlled device is also controlled, and then program B is executed in a normal state. In addition, in FIG. 3, the time data that coincided at time _t6 is related to a controlled device different from a certain controlled device, but it may be related to a certain controlled device.

As mentioned above, according to this invention, program A
When switching from program B to program B,
Since the program B is searched from the beginning and each controlled device is controlled based on the search results, Program B is continued, unlike conventional programs, there is no possibility of malfunction.

In the above embodiment, there are two types of programs, A and B, but the number can be further increased.
Also, program A is stored in memory 2, and program B is stored in memory 2.
is stored in the memory 4, but may be stored in one memory.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the program of a conventional program timer and the actual control status of the controlled device, Figure 2 is a block diagram of the program timer according to this invention, and Figure 3 is the program of the program timer and the actual control status of the controlled device. FIG. 3 is a diagram showing a control state of the device. 2, 4... Memory, 8... Comparison unit, 10... Time measurement unit, 14... Decoder unit, 18... Controlled device, 20... Detection unit, 22... Search unit, 24...
Search memory.

Claims (1)

[Scope of utility model registration request] A memory that stores multiple types of programs in which controlled device data defining a controlled device to be controlled, control data for the controlled device, and time data determining the time at which the control is performed are arranged in sequence as a set. a timekeeping unit that generates a time signal; a comparison unit that generates a coincidence signal when the time data of a specified type of the plurality of programs matches the time signal; a decoder unit that decodes the controlled device data and control data from the memory unit or test memory and supplies a control signal to the corresponding controlled device;
A detector that detects that one of the plurality of programs is switched to another type of program during execution, and the switched program for each controlled device based on the detection signal of this detector. a search unit that searches for control data corresponding to the closest time data before the current time of , and stores it in the search memory.