JPS6174296U

JPS6174296U -

Info

Publication number: JPS6174296U
Application number: JP1984158104U
Authority: JP
Priority date: 1984-10-19
Filing date: 1984-10-19
Publication date: 1986-05-20

Description

[Brief explanation of the drawing]

第１図は本考案の実施例を示すブロツク図であ
り、第２図は第１図に示す本考案実施例のタイム
チヤートである。第３図は所定サンプリング周期
内の入力パルス数を計測する従来例を示すブロツ
ク図であり、第４図は第３図に示す従来例のタイ
ムチヤートである。１０Ａ，１０Ｂ，１０Ｃ……パルス接点、１１
Ａ，１１Ｃ，１１Ｄ，１１Ｅ……サンプリング周
期接点、１２……データ変換器周期開始時点検出
手段としての開始時点リレー、１２Ａ，１２Ｃ，
１２Ｄ……開始時点リレー接点、１３……データ
変換基本周期設定手段としての基本周期タイマ、
１３Ｂ……基本周期タイマ接点、１４……データ
変換周期紙了時点検出手段としての終了時点リレ
ー、１４Ｂ，１４Ｃ，１４Ｄ……終了時点リレー
、２１……カウンタ、２２……積算時間計、２３
……演算器。 FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a time chart of the embodiment of the present invention shown in FIG. FIG. 3 is a block diagram showing a conventional example of measuring the number of input pulses within a predetermined sampling period, and FIG. 4 is a time chart of the conventional example shown in FIG. 10A, 10B, 10C...Pulse contact, 11
A, 11C, 11D, 11E...Sampling cycle contact, 12...Start point relay as data converter cycle start point detection means, 12A, 12C,
12D...start point relay contact, 13...basic cycle timer as data conversion basic cycle setting means,
13B...Basic cycle timer contact, 14...End point relay as data conversion cycle end point detection means, 14B, 14C, 14D...End point relay, 21...Counter, 22...Integrated time meter, 23
...Arithmetic unit.

Claims

[Scope of utility model registration request]

A circuit for measuring the number of pulses input during a predetermined sampling period, comprising a sampling period setting means for setting a sampling period and emitting a sampling start signal and a sampling end signal thereof, and a maximum value of the input pulse period from the sampling period. data conversion basic cycle setting means configured to set a data conversion basic cycle obtained by subtracting the data conversion basic cycle and start the data conversion basic cycle based on the sampling start signal, and the rise of the first pulse after the sampling start signal is issued. a data conversion cycle start point detection means for detecting the data conversion cycle start point, a data conversion cycle end point detection means for detecting the rise of the first pulse after the end of the data conversion basic cycle, and data conversion from the data conversion cycle start point to the end point. A counter that counts the number of pulses input during a cycle, an integrating time meter that measures the time of the data conversion cycle, and a counter that calculates the number of pulses per unit time from the counter output signal and the integrated time meter output signal, or a sampling A sampling data conversion circuit comprising: an arithmetic unit that calculates the number of pulses in a cycle.