JPS62203966U

JPS62203966U -

Info

Publication number: JPS62203966U
Application number: JP9121086U
Authority: JP
Priority date: 1986-06-12
Filing date: 1986-06-12
Publication date: 1987-12-26

Description

[Brief explanation of the drawing]

第１図はこの考案の機関用クランク角度検出装
置の一実施例の構成を示す図、第２図は同上クラ
ンク角度検出装置における角度信号発生回路の詳
細な構成を示す回路図、第３図は第２図の角度信
号発生回路の各部の動作波形図、第４図および第
５図はそれぞれこの考案の機関用クランク角度検
出装置における角度信号発生回路の他の実施例の
回路図、第６図は従来の機関用クランク角度検出
装置の構成を示す図、第７図は第６図の機関用ク
ランク角度検出装置における角度信号発生回路の
回路図、第８図は第７図の角度信号発生回路の動
作を説明するための波形図である。１……ロータ、１ａ……凸部、２……第１の磁
気ピツクアツプ、３……角度信号発生回路、２ｃ
，２２ｃ……ピツクアツプコイル、２２……第２
の磁気ピツクアツプ。なお、図中同一符号は同一
または相当部分を示す。 FIG. 1 is a diagram showing the configuration of an embodiment of the engine crank angle detection device of this invention, FIG. 2 is a circuit diagram showing the detailed configuration of the angle signal generation circuit in the crank angle detection device, and FIG. FIG. 2 is an operational waveform diagram of each part of the angle signal generation circuit, FIGS. 4 and 5 are circuit diagrams of other embodiments of the angle signal generation circuit in the engine crank angle detection device of this invention, and FIG. 7 is a circuit diagram of the angle signal generation circuit in the engine crank angle detection device of FIG. 6, and FIG. 8 is the angle signal generation circuit of FIG. 7. FIG. 2 is a waveform diagram for explaining the operation of FIG. DESCRIPTION OF SYMBOLS 1... Rotor, 1a... Convex part, 2... First magnetic pickup, 3... Angle signal generation circuit, 2c
, 22c...Pickup coil, 22...Second
magnetic pick-up. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

In order to detect the convex parts of the rotor rotating in synchronization with the engine and generate an AC signal, the number Q of the convex parts of the rotor is calculated by {(360°/Q) x integer + (90°
/Q)}, and a first pulse signal and a second pulse signal inverted with respect to the first pulse signal based on the output signal of the first magnetic pickup. a first angle signal output means for generating a pulse signal and outputting an angle signal based on each rising edge or each falling edge of the first and second pulse signals, corresponding to each of the convex portions of the rotor; and output two angle signals respectively, and generate a third pulse signal and a fourth pulse signal inverted with respect to the third pulse signal based on the output signal of the second magnetic pickup; a second angle signal output means for outputting an angle signal based on each rising edge or each falling edge of the third and fourth pulse signals; two angle signals corresponding to each of the convex portions of the rotor; and output two angle signals corresponding to each of the protrusions of the rotor with respect to the first magnetic pickup, and two angle signals corresponding to each of the protrusions of the rotor with respect to the second magnetic pickup. An engine crank angle detection device characterized by comprising means for synthesizing.