JPH0214017U

JPH0214017U -

Info

Publication number: JPH0214017U
Application number: JP9172588U
Authority: JP
Priority date: 1988-07-11
Filing date: 1988-07-11
Publication date: 1990-01-29

Description

[Brief explanation of drawings]

第１図はこの考案によるロータリエンコーダの
一実施例を示すブロツク図、第２図は第１図のも
のの各部の波形を示す図、第３図はこの考案によ
るロータリエンコーダの他の実施例を示すブロツ
ク図である。１……パルス変換回路、２……発振器、３，１
１，１２……カウンタ、４，１４……フリツプフ
ロツプ、５，６……ラツチ回路、７……制御装置
、１３……コンパレータ、１５……アンド回路。 Fig. 1 is a block diagram showing one embodiment of the rotary encoder according to this invention, Fig. 2 is a diagram showing waveforms of various parts of the one in Fig. 1, and Fig. 3 shows another embodiment of the rotary encoder according to this invention. It is a block diagram. 1... Pulse conversion circuit, 2... Oscillator, 3, 1
1, 12... Counter, 4, 14... Flip-flop, 5, 6... Latch circuit, 7... Control device, 13... Comparator, 15... AND circuit.

Claims

[Scope of utility model registration request]

In a rotary encoder that generates one reference signal per rotation and a number of pulses corresponding to the resolution per rotation, the pulse is
a pulse conversion circuit that converts into a short pulse corresponding to a falling edge; an oscillator; a counter that counts the output of the oscillator and is cleared by the short pulse; and an output each time the counter is cleared. two latch circuits that alternately latch the two latch circuits, and whether or not the number of pulses and the duty ratio of each pulse maintain preset normal values based on the reference signal and the outputs of both latch circuits. A rotary encoder characterized by being provided with a control device for discrimination.