发明名称 |
Flow meter for converting mechanical rotation into an electronic signal |
摘要 |
A metering device has a magnet with ten poles which is driven to rotate by a gear connected to a source of rotation that is proportional to fluid flow, the passage of time, or other phenomenon. A reed switch is mounted so that rotation of the poles of the magnet, into and out of a position adjacent to the reed switch causes the reed switch to open and close as the magnet rotates. The opening and closing of the reed switch causes a step change in voltage applied to an electronic device which increments a counter. A second reed switch spaced from the rotating magnet sufficiently so that it remains normally open can act as a sensitive device for detecting the presence of extraneous magnetic fields that might interfere with the operation of the first reed switch.
|
申请公布号 |
US6333626(B1) |
申请公布日期 |
2001.12.25 |
申请号 |
US20000516415 |
申请日期 |
2000.03.01 |
申请人 |
BREED AUTOMOTIVE TECHNOLOGY, INC. |
发明人 |
EDWARDS PAUL K. |
分类号 |
G01D5/251;G01F15/06;G01R11/16;(IPC1-7):G01R1/02;G01D5/245;G01F15/00;G08B13/02;G08B13/22 |
主分类号 |
G01D5/251 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|