JPS5944126A - Control system for timer - Google Patents

Abstract

PURPOSE:To eliminate the necessity of assistance for setting and prevent malfunctions due to setting mistakes, by discriminating the frequency, whether it is 50Hz or 60Hz, from the time width of a binary signal following to a commercial AC power frequency and automatically setting a timing signal generating circuit. CONSTITUTION:A commercial AC signal is rectified at a rectifier circuit 10 and converted into a count signal CC of a binary coding level at a square wave circuit 11. The count signal CC is supplied to a counter 12 and microprogram control circuit 15. At the control circuit 15, the time, during which the count signal CC is ''1'', is counted and compared with a reference value, and then, ''1'' or ''0'' is outputted to an output signal Jo. The output signal of an FF16 is supplied to a timing signal generating circuit 13 and, when the output of the FF16 is ''1'', ''5'' is selected as a coefficient setting value and, when the counter counts five pieces, a timing signal TA of 50msec is outputted. When the output of the FF16 is ''0'', ''6'' is selected and 50msec is outputted after the counter 12 counts six pieces.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a microprogram control type processing device having a timer device using a commercial AC power frequency.

[Technical background of the invention and its problems]

General (=, timer devices used in information processing equipment (2) oscillation sources (2) There are two types: one using a crystal oscillator and the other using a commercial or current frequency.
A timer device that uses a commercial AC power supply frequency can be expected to operate in a commercially inconsistent manner, but since the power supply frequency is not standardized in branch countries and is distributed between 50Hz and 60Hz regions, the system There are 8 methods to judge the frequency (2) and to set the circuit according to the frequency (2). Switch operations or opening of setting pins/fish boxes, etc. (2 manual operation methods (2).

FIG. 1 is a Zoroku diagram showing the circuit configuration of a conventional timer device having this polar frequency setting mechanism.
The input AC signal AC (hereinafter referred to as "feminine" AC) passes through a rectifier circuit 10 and a rectangular wave circuit 1, and then is converted into two binary level count signals C and Ci, and then converted into a 3-bit signal. 12 counters are supplied. Counter 121t'i, d1 number setting value selected with manual operation switch SW (
5" or "6" in this case), the counting operation according to the count signal CC+2 is repeated, and the time signal generation circuit 13 generates the sub-hour No. 4M TA of a predetermined time unit (here, 50 meters). The timer count operation of the timer river counter 14 is executed from this time correction other number TA+2. Here, the manual operation switch SW is connected to the commercial AC' power supply used, that is, the input main current signal A.
It is selectively switched according to the frequency of C (50 Hz to 760 Hz).Here, when the cycle mantissa of the alternating current signal AC is 59 Hz, the above-mentioned switch y-8Vv' is set to ON, and the counting setting is performed. When the value "5n" is selected and the frequency of the alternating current signal AC is 60Hz, the above switch S
Set W to OFF and select the count setting value "6"'.

As a result, the clock signal generation circuit 13 outputs the power supply frequency α1 from the used commercial power source to 50 ) (z, 60 H
z, the 50 m5ec timing signal “I
'A is what you get. At this time, the 4H CC is input to the counter 12 by frequency (501 (z
/60 Hz) as shown in Figures 2(a) and (b).

FIG. 2(,) shows the count signal when the AC power frequency is 50 Hz, and FIG. 2(b) shows the count signal when the AC power frequency is divided by 5QHz.

However, in the above-mentioned conventional timer control means, the circuit settings according to the AC power frequency used are manually operated, which leads to complicated handling operations and is likely to cause malfunctions due to setting errors. There was a problem.

[Purpose of the invention]

The present invention has been made in consideration of the above-mentioned circumstances, and an object of the present invention is to provide a timer control method that can automatically perform circuit switching settings according to the AC power frequency used, with a simple circuit configuration. .

[Overview of the invention]

The present invention relates to a processing device for a microprogram control circuit comprising a timer device that performs a timer counting operation based on a timer signal obtained by counting a binary signal according to the source frequency used.゛C1 The above binary signal is applied to the microprogram control circuit as a branch judgment signal, and the signal is converted into a binary signal (it is determined from the time width of signal M whether the AC power frequency used is 5QHz or 60Hz). The configuration is such that the timekeeping signal generation circuit is automatically set based on the holding signal 1''- of the judgment result.This allows the circuit settings to be made according to the frequency of the AC power supply used without any need for manpower. This allows you to reliably avoid malfunctions due to setting errors.

[Embodiment of Issuance E9j] An embodiment of the present invention will be described below with reference to FIGS. 3 and 4. FIG. 3 is a circuit block diagram showing one embodiment of the present invention, and the same parts as in FIG. 1 are given the same reference numerals and their explanation will be omitted. A count signal CC of a binary level according to the frequency of the AC power supply used, obtained from the rectangular wave %11, is supplied to the counter 12, and is also supplied to the micron 0 program control circuit 15 as a two-branch determination signal. From this count signal CC, the microprogram control circuit 15 uses frequency determination processing and Durham processing to be described later to determine whether the AC power frequency used is 50 Hz or not.
0H2 is determined 1', and the output signal Jo resulting from this determination is held as a control signal generator 16 (== held), and its output is supplied as a count set value selection signal to the clock signal generation circuit is+2.

FIG. 4 is a flowchart showing the processing flow of the frequency determination program executed by the microprogram control circuit 15 (2).

The operation of one embodiment will now be described with reference to FIGS. 3 and 4. Input AC signal (50Hz/60Hz
) A C is rectified by the rectifier circuit 10 and then sent to the rectangular wave circuit 11C to generate a count signal C'C (
It is reshaped. This count signal CCI counter 12
(2. Microprogram control circuit 15 (Two-branch judgment A is supplied as No. 1. Microprogram control circuit 15 executes frequency judgment processing using register A that can be used in the microprogram. death,
Compare the count value of the internal clock during the "1" level period of the input count signal CC with a preset comparison reference value, and determine whether the frequency of the AC being used is 59 Hz or 59 Hz. To explain this frequency determination process with reference to FIG. 11'', the number of internal clocks is started to be reduced using the register A cleared in advance. Then, when the above-mentioned CC changes from "1" to 10"'42, the 81 count of the internal clock is stopped. Then, register A (-4% of stored CC = "1"11
The count value CD of the internal clock at (=) is compared with a preset comparison reference value 8D, and if CD>SD, the output IB Jo is set to 1'' and the flip-flop f16 is set. The state is maintained until the power is cut off.The output No. 4i of this flip-flop 16 is supplied to the timekeeping No. 6 generating circuit 13 (-,
This is a selection signal for the count setting value ("5" or "6"). That is, if the set output (Q) of the flip-flora f16 is "1", the timing signal generation circuit 13 selects "5" as the count setting value, and selects "5" as the count setting value every time the counter 12 counts five count signals CC. (25 Q Outputs the clocking signal TA of the mIIeC. Also, if the set output (Q) of the flip-flora 7°16 is "0", "6" is selected as the W1 number setting value, and the counter 12 is the count signal CC
It outputs a timing signal TA of 50 m5ec every time it counts 6 times. The timing signal TA of 5Qmm outputted from the timing signal generation circuit 13 is sent to the timer counter 1.
4 (2) is supplied, and the timer counting operation is performed accordingly.

In this way, the timer month j counter 14 (2) is 60H2 even if the frequency of the AC power supply used is 50Hz.
Even if it is, you can always (
A timing signal TA of 250 m5ec is supplied. Therefore, the handling operations are scaled up, and malfunctions due to circuit setting errors are reliably avoided.

〔Effect of the invention〕

As described in detail above, according to the present invention (-), the commercial AC power frequency used (-) the timer device d that performs the timer counting operation (the timer device d that is obtained by multiplying the binary code by 11). It has a microprogram control circuit (2), an idle circuit configuration (2), the AC power supply frequency used (= circuit settings that can be made automatically), and easy handling and operation. Second, it is possible to provide a timer control method that can reliably avoid malfunctions caused by setting errors.

[Brief explanation of drawings]

Fig. 1 is a circuit block diagram showing the configuration of a conventional timer device, and Fig. 2 (a) I (b) shows the commercial AC power frequency (5
0 Hz/60 Hz) A waveform diagram of No. 4"A showing the count signals of the binarized level according to C, FIG. 3 is a circuit block diagram showing one embodiment of the present invention, and FIG. It is a flowchart showing the processing flow of the frequency determination program. 10... Rectifier circuit, 11... Rectangular wave circuit, 12...
・Counter, 13... H1 hour number generation circuit, 14.
・・Counter for timer, 15 river microprogram control circuit, 16 ・・Furitsu no Furo Tsuno, AC ・・Commercial AC power supply (AC signal). Applicant's Representative Patent Attorney Takehiko Suzue Figure 1 Figure 2 Figure 4

Claims (1)

[Claims] A microprogram-controlled processing device (two or more) having a timer device that performs timer counting operation (two or more timer signals) is generated based on a binary color code according to a commercial text θ1 and a power supply frequency 42. and a counter for counting NrJ binarized numbers, and this counter is operated repeatedly with a selected set value, and the count value is set to the set value (the mother of two consecutive numbers). Then, the binarization code is energized by the microprogram control circuit (as a bifurcated code) and compared with a preset internal clock count value at one cycle or half cycle of the binary code. It has means for determining the commercial AC power supply frequency by comparing it with a reference value, a Solitsuno flop for holding this determination result, and means for selecting the set value of the counter according to the output signal C2 of the Solitsuno flop. and the output signal i of the solituno flop
2. A timer control method characterized in that, by controlling the setting value selection control of the counter according to 2, the time measurement signal is set to different open alternating current power supply frequencies (2, and the same time unit).