JPH0191340U

JPH0191340U -

Info

Publication number: JPH0191340U
Application number: JP18784687U
Authority: JP
Priority date: 1987-12-10
Filing date: 1987-12-10
Publication date: 1989-06-15
Anticipated expiration: 2002-12-10
Also published as: JPH0731630Y2

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例である外部イベン
トカウント回路のブロツク図、第２図は第１図の
プリセツトタイミングチヤート図、第３図は従来
の外部イベントカウント回路のブロツク図、第４
図はエンコーダ出力正転パルスを示す波形図、第
５図はエンコーダ出力逆転パルスを示す波形図、
第６図は第３図のプリセツトタイミングチヤート
図である。１：エンコーダ、２：波形整形回路、３：プロ
グラマブル・カウンタ、４：マイクロコンピユー
タ、１０：ＮＯＲ回路。 Figure 1 is a block diagram of an external event count circuit which is an embodiment of this invention, Figure 2 is a preset timing chart of Figure 1, Figure 3 is a block diagram of a conventional external event count circuit, and Figure 4 is a block diagram of a conventional external event count circuit.
The figure is a waveform diagram showing the encoder output forward rotation pulse, Figure 5 is the waveform diagram showing the encoder output reverse rotation pulse,
FIG. 6 is a preset timing chart of FIG. 3. 1: Encoder, 2: Waveform shaping circuit, 3: Programmable counter, 4: Microcomputer, 10: NOR circuit.

Claims

[Scope of utility model registration request]

An encoder that is directly connected to the rotating body to be detected and outputs a pulse signal by capturing the movement of the rotating body to be detected, a waveform shaping circuit that shapes the pulse signal from this encoder, and a final stage microprocessor that outputs the output from this waveform shaping circuit. External event consisting of a programmable counter driven by light pulses output from a computer and a microcomputer that inputs the output signal of this programmable counter to detect the rotation speed, rotation angle, etc. of the rotating body to be detected. An external event counting circuit characterized in that a logic control circuit which receives an external event pulse and a preset command pulse as addition inputs is connected to the clock input side of the programmable counter.