JPH0311954Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a digital switchgear that can have a timer function and a counter function.

Generally, a digital switchgear has a function of outputting a code signal corresponding to the display device of the display dial.

However, in today's world where demands for functional roles for this type of switchgear are becoming more widespread, the conventional code output function alone is no longer sufficient to maintain the status of the switchgear as a switchgear that satisfies users.

The purpose of this invention is to greatly enhance the functionality and make it easier to use by adding an input unit and an output unit to the digital unit.

In summary, this invention consists of a switch section including a display dial, and a one-digit n-ary counter that counts input pulses and outputs a matching pulse when the count value becomes the same value as the code output of the switch section. A digital unit is composed of one or more of these units, an input unit having an oscillator or an external signal input circuit, and an output unit having a display, and each unit is shaped like a plate. Each plate is connected in the thickness direction.

Examples of this invention will be described below with reference to the drawings.

1A and 1B are a front view and a side view of the digital unit.

This digital unit 1 includes a cylindrical display dial 10 having a numerical display section of 0 to 9, and a setting button 1 for rotating the display dial 10 forward or backward.
1, and includes a switch section 12 that outputs a code signal corresponding to the displayed number, and a counter section.
It is composed of IC13.

FIG. 2 is a block diagram of this digital unit. The counter unit 14 is a one-digit n-ary counter 14a that counts pulses input to the input terminal a.
and a comparison circuit 14b that compares the count value with the code output of the switch section 12. For example, a hexadecimal counter or a decimal counter is selected as the counter 14a. The overflow output of this counter 14a, that is, the carry pulse, is guided to the output terminal b. Further, the coincidence pulse of the comparator circuit 14b is guided to the output terminal c. Since the counter section 14 has such a configuration, when there is a number of pulse inputs corresponding to the displayed number, a matching pulse is derived at the output terminal c, and when there are n pulse inputs, the output terminal b is output.
A carry pulse is derived.

FIG. 3 shows a block diagram of the input unit. Same figure A
Figure B is a block diagram of an input unit with an oscillator.
1 is a configuration diagram of an input unit having an external signal input circuit.

The input unit 2 in FIG. 3A is composed of an LED 20, its driving section 21, and an oscillator 22. The period of the oscillation pulse is normally set to 1 second or 1 minute, and the pulse causes the LED 20 to blink and is output to the output terminal d. The input unit in FIG. 3B also includes an LED 20' and its driving section 21'.
and an external signal input circuit 23. The external signal input circuit 23 introduces an external pulse from an input terminal e, and outputs a synchronizing pulse of an appropriate level in synchronization with the external pulse to an output terminal f.

FIG. 4 is a block diagram of the output unit.

This output unit 3 is composed of an LED 30, its driving circuit 31, and an AND circuit section 32. The AND circuit section 32 has an AND gate having a plurality of input terminals g, h . Therefore, when pulses are input to the input terminals g, h, . . . at the same time, the LED 30 lights up. In addition to this, an interface section including a small relay or a photocoupler may be provided to output an output to the outside.

The digital unit, input unit, and output unit are each molded into a plate shape as shown in FIG. 5, and the units are connected in the thickness direction (lateral direction).
By combining these units, a digital switchgear having various functions such as a timer function and a counter function can be constructed.

The basic combination consists of several digital units 1 with a single input unit 2 at one end and an output unit 3 at the other end. When there is a single digital unit 1, the output terminal c of that unit 1 is connected to the output terminal g of the output unit 3, and the other output terminals below h are set to high level. In addition, input terminal a of digital unit 1 is connected to output terminal of input unit 2 (see Fig. 3A).
In the case of the input unit shown in FIG. 3, connect the terminal d, and in the case of the input unit shown in FIG. The digital switchgear constructed in this manner has a timer function when the input unit 2 is the input unit shown in FIG. 3A, and has a counter function when the input unit 2 is the input unit shown in FIG. 3B. will have. That is, when the digital unit 1 has a timer function, when the digital unit 1 counts oscillation pulses and the count value matches the number preset on the display dial 10, that is, when the preset time has elapsed since the start, the output unit 3 LED 30 lights up. In addition, if it has a counter function, the digital unit 1
counts synchronization pulses, and when the count value matches the number preset on the display dial 10, that is, when the number of external input pulses reaches the preset value, the LED 30 of the output unit 3 lights up.

FIG. 5A is a front view of the digital switchgear having a one-digit timer function configured as described above. Several other forms of digital switchgear having a timer function are shown in Figures B to E. Figure B
The switchgear uses two digital units 1, and the input unit 2 has a built-in one-minute pulse oscillator. In a switchgear using these two digital units, terminal b (carry pulse deriving terminal) of lower stage unit 1a is connected to terminal a (pulse input terminal) of stage unit 1b, and both units 1a and 1b are Each terminal c is connected to terminals g and h of the output unit 3. Furthermore, the terminal d (oscillation pulse deriving terminal) of the input unit 2 is connected to the terminal a of the lower stage unit 1a.
Connect to. Furthermore, each digital unit 1a, 1
For b, use one with a built-in decimal counter. By configuring like this, 10
A digital switchgear with a two-digit binary timer function is obtained.

FIG. 5C shows a switchgear using three digital units and an input unit containing a one-second pulse oscillator. In this switchgear, the terminal d of the input unit 2 is connected to the terminal a of the lowest stage unit 1c so that a one second pulse is input to the lowest stage unit 1c. Also, the same unit 1c
The terminal b of the unit 1d is connected to the terminal a of the unit 1d in the upper stage, and the terminal b of the unit 1d is
is the unit 1e at its higher (top) stage.
is connected to terminal a of. That is, the three units are connected in cascade. In addition, each unit 1c,
Each terminal c of 1d and 1e is connected to terminals g, h, and i of the output unit 3. Units 1c and 1e are
It has a built-in decimal counter, and unit 1d has a hexadecimal counter built-in. With the above configuration, one decimal digit and
You get a digital switchgear with sexagesimal second timer function.

Similarly, by using four digital units 1, a digital switchgear equipped with a timer function for two decimal digit minutes and sexagesimal seconds can be obtained as shown in Figure 5D. By using six 1's, a digital switchgear equipped with a timer function for two-digit decimal time and sexagesimal minutes and seconds can be obtained, as shown in FIG. 5E. In this case, unit 1
Units f, 1h, 1i, 1j, 1l, 1n, and 1o have built-in decimal counters, and units 1g, 1k, and 1m have hexadecimal counters built-in. In addition, the terminal c of each digital unit is connected to the terminal g, h... of the output unit 3.
and each digital unit is connected to
They are connected in cascade as in the case of C.

As described above, by appropriately selecting the number and type of digital units 1, a digital opening/closing device having an arbitrary timer function can be constructed. Note that the number of digital units connected to the output unit 3 can be reduced in the same digital switchgear. In this case, the timer function of the switchgear changes. For example, the fifth
In the digital switchgear shown in Figure E, if the digital units 1n and 1o are disconnected from the output unit 3, it becomes a digital switchgear with sexagesimal minute and second timer functions.

Next, a digital switchgear having a counter function will be explained. FIG. 5F shows a digital switchgear having this counter function.

Each digital unit 1 of this digital switchgear
are cascaded in the same way as above. In other words, terminal b of a relatively lower stage unit
is connected to terminal a of a relatively higher stage unit. In other words, the carry pulse of a certain unit becomes the input pulse of the upper unit. Normally, each unit 1 uses a decimal type, and all units 1 are connected to the terminals of output unit 3.
Connect terminal c of. However, in the latter case,
For the same reasons as in the case of the timer described above, only terminal c of the desired unit 1 may be connected.
It goes without saying that any of the units shown in FIGS. 3A and 3B may be used as the input unit 2.

The digital unit 1 with a counter function can be formed as described above.

Incidentally, each unit may be connected by known means.

As described above, according to this invention, it is possible to form a digital switchgear with various timer functions and counter functions with a simple configuration.
It has the advantage of being easy to use and fully adapting to the diversification of functions. Furthermore, since the unit configuration can be configured to meet the user's required specifications, cost performance can be improved. Further, since each unit is plate-shaped and the units are connected in the thickness direction, connection is easy and the appearance is neat no matter how many units are connected. In addition, there is a display dial on the front.
The advantage is that the operability and visibility of each unit are improved because LEDs, etc. can be arranged.

[Brief explanation of the drawing]

FIG. 1 is a front view (FIG. 1A) and a side view (FIG. 1B) of a digital unit used in the digital switchgear of this invention. Figure 2 is a configuration diagram of the digital unit, Figures 3A and B are configuration diagrams of the input unit used in the digital switchgear, Figure 4 is a configuration diagram of the output unit used in the digital switchgear, and Figure 5 is a configuration diagram of the output unit used in the digital switchgear. Figures A to F are front views of configuration examples of the digital switchgear. 1...Digital unit, 10...Display dial, 12...Switch section, 14...Counter section,
2...Input unit, 3...Output unit.

Claims (1)

[Scope of utility model registration request] A switch section that obtains a code output corresponding to the displayed number by rotating the display dial in the forward or reverse direction, counts input pulses in n-ary, and the count value becomes the same value as the code output of the switch section. a single or multiple digital units having a one-digit n-ary counter section that outputs a coincidence pulse when a match occurs; and an output provided at one end of the single or multiple digital units to which the output of an adjacent digital unit is given. unit, and an input unit that is provided at the other end of the single or plural digital units and outputs an input pulse such as an oscillation pulse or an external signal synchronization pulse to an adjacent digital unit, and each unit has a plate shape. A digital switchgear in which each part is connected in the thickness direction.