Electronic integrating meter |
|||||||
| 申请号 | JP11149783 | 申请日 | 1983-06-21 | 公开(公告)号 | JPS603795A | 公开(公告)日 | 1985-01-10 |
| 申请人 | Toshiba Corp; | 发明人 | MIHARA YUUJI; | ||||
| 摘要 | PURPOSE:To change counting operation optionally by providing a signal circuit, which switches a phase positively and negatively between a detecting circuit and a positive/negative discriminating circuit in an integrating circuit which counts the number of pulse signals corresponding to the quantity of used fluid. CONSTITUTION:A magnet 13 is rotated together with a rotary blade 15 provided in a flow passage, and its magnetic flux is converted to a voltage by a detector 14 to obtain a pulse signal. The first pulse signal P1 and the second pulse signal P2 having a prescribed phase difference are provided with this pulse signal for the purpose of discriminating the rotation direction of the rotary blade, and these pulse signals are shaped by a detecting circuit 1 and are inputted to a signal switching circuit 7. The circuit 7 consists of a logic gate and reverses the phase relation between both pulse signals P1 and P2 in accordance with the logic of a control signal CT. The signals are inputted to a positive/negative discriminating circuit 2 to decide addition or substraction in accordance with the phase relation between them, and they are counted by an integrating circuit 4 after passing a converting circuit 3, and the counted value is not only displayed on a display device 6 through a display circuit 5 but also is transmitted to an external device from a signal line 11 through a transmitting circuit 10. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
QQ群二维码
意见反馈
意见反馈