JPH07160308A - Controller - Google Patents

Abstract

PURPOSE:To provide the controller which selects one of plural functions in a control part with a small number of dedicated function selection input terminals. CONSTITUTION:The number of the dedicated function selection input terminals can be decreased by using the same input terminals as both a start indication input terminal and function selection input terminals 1a and 1b. Further, when there is no specific start indication input, the same input terminal is used as both a power supply synchronizing signal input terminal 1a and a function selection input terminal 1b to decrease the number of the dedicated function input terminals. Furthermore, the number of the dedicated function selection input terminals can be decreased by using both the power supply synchronizing signal input terminal 1b and start indication input terminals 1a, 1d, 1e, and if as the function selection input terminals.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for electric equipment.

[0002]

2. Description of the Related Art Generally, a control device using a microcomputer is used to control the operation of electric equipment.

Conventionally, this type of control device is shown in FIGS.
The structure shown in FIG.

As shown in the figure, a control unit 100 such as a microcomputer has a plurality of operation switches 102a-10a.
2d is connected to each of the input terminals 101a to 101d, and a sync signal generation circuit 1 for generating a sync signal of a commercial power source is provided.
04 and the function selection input terminals 100a and 100b are connected to the input side. Further, on the output side of the control unit 100, a drive unit 103 such as a motor and a display unit 104 for displaying an operating state.
Are connected. The control unit 100 uses a plurality of programs A
To D are stored, and function selection input terminals 100a, 10
By inputting the logic signal 0 or 1 to 0b in advance,
One of the programs can be selected.

In the above structure, the program selecting means will be described with reference to the flow chart of FIG. 6. First, at step 111, the function selecting input terminals 100a and 100b.
A logic signal 0 or 1 is input to. At this time, since there are two input terminals and two kinds of logic signals, four kinds of program A
One of D can be selected and executed. For example, if the program A is selected when the logic signal 0 is input to the function selection terminals 100a and 100b,
The program A is set in step 115, and the control unit 10
The operation of 0 is executed based on the program A.

Generally, if n function selection input terminals are provided, one of the 2 ⁿ kinds of programs can be selected.

[0007]

In such a conventional control device, when many selection functions are set, a large number of function selection input terminals are required, and the number of input terminals of the microcomputer, which is the control device, increases. There was a problem that the price increased as the size increased.

The present invention solves the above problems, and provides a control device capable of selecting a program by reducing the number of function selection input terminals when storing a large number of programs in a control unit and applying them to many devices. That is the first purpose.

A second object is to provide a control device capable of reducing the number of function selection input terminals when there is no switch terminal in place of the function selection input terminal.

A third object is to provide a control device which has a smaller number of function selection input terminals and which can be used at a small size and at a low cost.

[0011]

The first means for achieving the first object of the present invention is a control for storing a program selection means and a plurality of execution programs, and having a plurality of function selection input terminals. And connecting a start input switch to one of the function selection input terminals, the program selection means selects one of the execution programs based on an input signal of the function selection input terminal. It is a thing.

The second means for achieving the second object has a control section for storing a program selecting means and a plurality of execution programs, and having a plurality of function selection input terminals. When the synchronizing signal generator is connected to one of the selection input terminals, the program selection means selects one of the execution programs based on the input signal of the function selection input terminal.

A third means for achieving the third object has a control section which stores a program selecting means and a plurality of execution programs, and which has a plurality of function selection input terminals, and has the above-mentioned input. When the start input switch and the synchronizing signal generator are respectively connected to the terminals, the program selection means selects one of the execution programs based on the input signal of the function selection input terminal.

[0014]

According to the present invention, the start input terminal can also be used as the function selection input terminal due to the configuration of the first means described above.
The number of function selection input terminals can be reduced.

Further, according to the configuration of the second means, when the activation input terminal does not exist or cannot be specified, the synchronization signal input terminal can be used also as the function selection input terminal, and the number of function selection input terminals can be reduced. It is possible.

Further, with the configuration of the third means, both the activation input terminal and the synchronization signal input terminal can be used also as the function selection input terminal, and more functions can be selected.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. The same components as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, a plurality of operation switches 2b to 2d are connected to the input terminals 1c to 1e of the control unit 1 such as a microcomputer, and the function selection input terminal 1
At the same time that a and 1b are connected to the input side, the start input switch 2 is connected to either one of the function selection input terminals 1a and 1b.
a is connected. Further, a drive unit 3 such as a motor and a display unit 4 for displaying an operating state are connected to the output side of the control unit 1. The control unit 1 stores a plurality of programs A to D, inputs a start signal to one of the function selection input terminals 1a and 1b, and applies a voltage to the remaining function selection input terminals or a logic signal 1 or 0 by grounding. By previously inputting, one of the programs can be selected.

To explain the operation in the above configuration, first, when the activation input switch 2a is turned on, the control unit 1 activates the program selection means to determine which of the function selection input terminals 1a and 1b has the activation instruction by a logic signal. It is detected by a change of 1 or 0. For example, when the activation input switch 2a is set to the function selection input terminal 1b, the program selection means reads the preset logic signal 1 or 0 to the remaining function selection terminals 1a and selects one of the execution programs. .

The program selecting means will be described with reference to the flow chart of FIG. 2. When a switch input signal is applied to either the function selecting input terminal 1a or 1b in step 11, the function selecting input terminal changes in steps 12 and 13. Is stored as a start input terminal.

In this embodiment, as shown in FIG.
By operating a, a switch input signal is sent to the function selection input terminal 1b, and the function selection input terminal 1b is stored as a start input terminal. In step 14, the logic signals of the remaining function selection input terminals are read, this is discriminated, and step 1
Programs A to D for realizing the selected functions of 6 to 19
Select one of the. In this embodiment, the function setting input terminal 1a
Is grounded, the logic signal 0 is read and the execution program D is selected.

As described above, according to the control device of the first embodiment of the present invention, one of many execution programs can be selected without increasing the number of function selection input terminals provided in the control section 1.

In the case of this embodiment, generally, if n dedicated function selection terminals other than the start input terminal are provided, (n +
1) One can be selected from 2 ⁿ kinds of execution programs.

Next, a second embodiment of the present invention will be described with reference to FIGS. 3 and 4. The same components as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

As shown, function selection input terminals 1a and 1b
The power supply synchronization signal generation circuit 5 is connected to one side of the circuit, and the logic signal 1 or 0 is input to the other side by voltage application or ground connection. The switches 2a to 2d cannot give a special activation instruction and are activated by pressing any switch after the start of energization. Further, the power supply synchronization signal generation circuit 5 is generally used for time measurement during timer operation and for regularly performing time-division processing of each processing of the program.

To explain the operation of the above configuration, at the start of energization, the control section 1 first activates the program selection means to detect the power supply synchronizing signal inputted to either of the function selection input terminals 1a and 1b. Specifically, the logical signal 1 or 0
In this embodiment, it is detected that the power supply synchronizing signal generating circuit 5 is connected to the function selection input terminal 1b as shown in FIG. Remaining function selection input terminal 1
For a, the logic signal 1 or 0 set in advance is read and one of the execution programs is selected.

The program selecting means will be described with reference to the flow chart of FIG. 4. When the power supply synchronizing signal is detected at either the function selecting input terminal 1a or 1b at step 20, the function setting input is changed regularly at step 21. The terminal is stored as a power supply synchronization signal input terminal. In this embodiment, as shown in FIG. 3, the power supply synchronization signal input is detected at the function selection terminal 1a, and the function setting input terminal 1a is stored as the power supply synchronization signal input terminal. In steps 13 and 14, the logic signals from the remaining function selection input terminals are read, and this is discriminated to select one of the programs A to D which realizes the functions selected in steps 16 to 19.

In this embodiment, since the function selection input terminal 1b is grounded, the logic signal 0 is read and the execution program B is selected.

Thus, according to the second embodiment of the present invention,
Even when the switch for instructing activation cannot be connected to the function selection input terminal, the function can be selected with a small number of function selection instruction input terminals.

In the case of the present embodiment, if the number of dedicated function selection input terminals is n, one can be selected from (n + 1) 2 _n kinds of execution programs.

Next, a third embodiment of the present invention will be described with reference to FIG.
The description will be made with reference to FIG. The same components as those in the first and second embodiments are designated by the same reference numerals and detailed description thereof will be omitted.

As shown, function selection input terminals 1a-1c
The start input switch 2a is connected to one of the
The power supply synchronization signal generation circuit 5 is connected to one of the remaining two function selection input terminals, and the logic signal 1 or 0 is input to the remaining one function selection input terminal by voltage application or ground connection.

To explain the operation in the above configuration, at the start of energization, the control section 1 first activates the program selection means to detect the power supply synchronizing signal input to any of the function selection input terminals 1a to 1c, and then the rest. The start instruction input to any one of the two function selection input terminals is detected. At this time, even if the power supply synchronizing signal and the start instruction are input in synchronization, the power supply synchronizing signal is detected as an ON-OFF operation at 50 Hz or 60 Hz, which is much faster than the start instruction.
The two inputs are easily distinguishable.

In the present embodiment, as shown in FIG. 5, after detecting that the power supply synchronizing signal generating circuit 5 is connected to the function selection input terminal 1b, the start input switch 2a is connected to the function selection input terminal 1a. To detect that For the remaining function selection input terminal 1c, a preset logic signal 1 or 0 is read to select one of the execution programs.

This program selecting means will be described with reference to the flow chart of FIG. 6. When a power supply synchronizing signal is detected in any of the function selecting input terminals 1a to 1c in step 20, it changes regularly in steps 21 and 22. Memorize the function setting input terminal as the power input terminal.

In the present embodiment, as shown in FIG. 5, the power supply synchronization signal input to the function selection input terminal 1b is detected in step 22, and the function setting input terminal 1b is stored as the power supply synchronization signal input terminal. Next, when a switch input signal is applied to either the function selection input terminal 1a or 1c in step 11, the function selection input terminal that changes in steps 12 and 23 is stored as the activation input terminal.

In this embodiment, as shown in FIG. 5, a switch input signal is sent to the function selection input terminal 1a by operating the switch 2a, and the function selection input terminal 1a is sent in step 12.
Is stored as a start input terminal. At step 24, the logic signals of the remaining function selection input terminals are read, and this is discriminated.

In this embodiment, since the function selection input terminal 1c is grounded, the logic signal 0 is read and the execution program F is selected in step 25.

As described above, according to the control device of the third embodiment of the present invention, more functions can be selected without increasing the number of function selection input terminals.

Generally, if the number of dedicated function selection input terminals other than the power supply synchronizing signal input and the start switch input is n, one can be selected from (n + 2) (n + 1) 2 ⁿ kinds of execution programs. it can.

[0041]

As is apparent from the above embodiments, according to the present invention, it is possible to serve as both the start input terminal and the function selection input terminal, so that the number of dedicated function selection input terminals can be reduced. Since it is not necessary to use a microcomputer having many terminals, the control unit can be downsized and an inexpensive control device can be provided.

If the control section does not have a start input terminal, the function selection input terminal can be substituted for the power supply synchronization signal input terminal, and it is not necessary to use a microcomputer having many terminals. A compact and inexpensive control device can be provided.

Further, since the function selection input terminals have both functions of the power supply synchronization signal input terminal and the start input terminal, it is not necessary to increase the number of input terminals, so that the control unit can be downsized and an inexpensive control device can be provided. Can be provided.

[Brief description of drawings]

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

FIG. 2 is a flowchart of the program selecting means.

FIG. 3 is a block diagram of the second embodiment.

FIG. 4 is a flowchart of the program selecting means.

FIG. 5 is a block diagram of the third embodiment.

FIG. 6 is a flowchart of the program selecting means.

FIG. 7 is a block diagram of a conventional control device.

FIG. 8 is a flowchart of the program selecting means.

[Explanation of symbols]

 1 control section 1a function selection input terminal 1b function selection input terminal 2a switch 2b switch 2c switch 2d switch 3 drive section 4 display section 5 power supply synchronization signal generation circuit

Claims (3)

[Claims] 1. A control unit that stores a program selection unit and a plurality of execution programs, and has a plurality of function selection input terminals, wherein a start input switch is connected to one of the function selection input terminals, The control device, wherein the program selection means selects one of the execution programs based on an input signal from the function selection input terminal. 2. When a program selection means and a plurality of execution programs are stored, and a control section having a plurality of function selection input terminals is provided, and a synchronization signal generator is connected to one of the function selection input terminals. The control device that selects one of the execution programs based on an input signal from the function selection input terminal. 3. When a program selection means and a plurality of execution programs are stored, and a control section having a plurality of function selection input terminals is provided, and a start input switch and a synchronization signal generator are respectively connected to the input terminals. The control device that selects one of the execution programs based on an input signal from the function selection input terminal.