JPS582679U

JPS582679U - rotation detection device

Info

Publication number: JPS582679U
Application number: JP9601581U
Authority: JP
Inventors: 片山　泰臣; 正彦藤井; 小山　一敏
Original assignee: 日本電気ホームエレクトロニクス株式会社; 本田技研工業株式会社
Priority date: 1981-06-30
Filing date: 1981-06-30
Publication date: 1983-01-08

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図は回転検出器の設置概略図、第２図は第１図の回
転検出器の出力検出パルスを示す波形図、第３図は従来
の回転検出装置の回路図、第４図は第３図の回路動作を
説明するための波形図、第５図は本考案の実施例に係る
回路図、第６図は第５図の回路動作を説明するための波
形図でさる。２およびＴＡ・・・回転検出器を構成する磁性体突起部
と磁気センサ、Ｃ・・・コンデンサ、Ｄ２・・・スイッ
チ素子としてのダイオード、Ｒ４およびＲ５・・・放電
路、１０・・・コンパレータ、＋Ｂ、Ｒ２およびＲ３・
・・直流電源。第４図　　　　　　ｔ２ｔｌ　　　　。Fig. 1 is a schematic diagram of the installation of the rotation detector, Fig. 2 is a waveform diagram showing the output detection pulse of the rotation detector in Fig. 1, Fig. 3 is a circuit diagram of a conventional rotation detection device, and Fig. 4 is the 3 is a waveform diagram for explaining the circuit operation, FIG. 5 is a circuit diagram according to an embodiment of the present invention, and FIG. 6 is a waveform diagram for explaining the circuit operation of FIG. 5. 2 and TA...Magnetic protrusion and magnetic sensor constituting a rotation detector, C...Capacitor, D2...Diode as a switch element, R4 and R5...Discharge path, 10...Comparator , +B, R2 and R3・
...DC power supply. Figure 4 t2 tl.

Claims

[Claims for Utility Model Registration] A rotation detector that outputs a detection panel when a predetermined portion of a rotating magnetic body crosses a predetermined position; a capacitor that is charged to a predetermined voltage value by a DC power source; a switch element that becomes conductive when the peak value of the detection pulse is greater than the predetermined voltage value and charges the capacitor in order to increase the voltage across the terminals of the capacitor to be higher than the predetermined voltage value; a discharge path for discharging the capacitor at a predetermined time constant over the period of the detection pulse, and a voltage value proportional to the voltage between the terminals of the capacitor and the peak of the detection pulse; and a comparator that compares the detected pulse peak value with the proportional voltage value and inverts the output when the detected pulse peak value is larger than the proportional voltage value.