JPS5882672U

JPS5882672U - Rotation speed detection device

Info

Publication number: JPS5882672U
Application number: JP17675981U
Authority: JP
Inventors: 徹高橋; 高瀬　貞雄
Original assignee: 日産自動車株式会社
Priority date: 1981-11-30
Filing date: 1981-11-30
Publication date: 1983-06-04

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は、従来例の構成図、第２図は、この考案の一実
施例の構成図、第３図は、第２図の実施例の信号処理を
説明する図、第４図は、マイコンのフローチャートの一
実施例図、第一５図は、この考案の第２の実施例の構成
図、第６図は、との考案の第３の実施例の構成図、第７
図は、第６図の出力パルス信号の波形図、第８図は、第
６図の第≦の実施例のマイコンのフローチャートの一実
施例図を示す。符号の説明、１・・・クランク角センサまたは電磁式ピ
ックアップ、２．１７・φ・コントロールユニット、３
・・・シグナルディスクプレートまたは回転円板、４・
・・回転角１２０°信号用突起、５・・・回転角１°信
号用突起、６・・・穴、７・・・光電管、８・・・受光
素子、９・・・比較器、１０・・・マイコン、１１・・
・パルス状電圧信号、１２・・・スライ不レベル電圧、
１．３゜１８・・・パルス列、１４・・・フリーランニ
ングカウンタ、１５・・・５分周回路、１６・・・ディ
ジタル加算器。第４図ＲFIG. 1 is a block diagram of a conventional example, FIG. 2 is a block diagram of an embodiment of this invention, FIG. 3 is a diagram explaining signal processing of the embodiment of FIG. 2, and FIG. FIG. 15 is a block diagram of the second embodiment of this invention, FIG. 6 is a block diagram of the third embodiment of the invention, and FIG.
The figure shows a waveform diagram of the output pulse signal of FIG. 6, and FIG. 8 shows an embodiment of the flowchart of the microcomputer of the embodiments ≦ in FIG. 6. Explanation of symbols, 1...Crank angle sensor or electromagnetic pickup, 2.17・φ・control unit, 3
...Signal disc plate or rotating disc, 4.
... Rotation angle 120° signal protrusion, 5... Rotation angle 1° signal protrusion, 6... Hole, 7... Phototube, 8... Light receiving element, 9... Comparator, 10. ...Microcomputer, 11...
・Pulse voltage signal, 12...Sliding non-level voltage,
1.3゜18... Pulse train, 14... Free running counter, 15... 5 frequency divider circuit, 16... Digital adder. Figure 4 R

Claims

[Scope of utility model registration request]

It uses holes (or protrusions) provided at approximately equal intervals on the concentric circle of the rotating surface of a rotating body that rotates in synchronization with the prime mover, and detects when the holes (or protrusions) of the rotating body have passed nearby. In a rotational speed detection device consisting of a device that converts the signal into an electrical signal, and a device that calculates the rotational speed by calculating the rotational period of a rotating body from the electrical signal, a plurality of holes (or protrusions)
Of these, the period from - holes (or protrusions) to the next - holes (or protrusions) is calculated each time, and the period is calculated as the period between holes (or protrusions) provided in the rotating body. 1. A rotational speed detection device characterized in that the rotational speed of a prime mover is detected by calculating the rotational period of a rotating body by adding up the number.