发明名称 |
User selected controller for a window operator |
摘要 |
A skylight operator includes a chain drive driven by a motor. Polarity of power applied to the motor is controlled to selectively open or close the window. Polarity is controlled by an H-bridge switching circuit driven by a microcontroller. The microcontroller receives commands from any one of a plurality of control devices The operator includes a feedback circuit using a hall effect sensor in connection with a ring magnet on the motor shaft for sensing incremental movement of the motor, representing movement of the window. A potentiometer control device allows unattended full or partial opening of the window. A user need only turn the potentiometer knob to a desired amount of opening. The microcontroller in response to such a command compares the command to the feedback signal and controls the motor to minimize the difference between the two.
|
申请公布号 |
US5285137(A) |
申请公布日期 |
1994.02.08 |
申请号 |
US19910753186 |
申请日期 |
1991.08.30 |
申请人 |
TRUTH DIVISION OF SPX CORPORATION |
发明人 |
MIDAS, THOMAS J.;MCMILLAN, SCOTT D. |
分类号 |
E05F15/12;E05F15/20;H02P7/00;(IPC1-7):H02P7/00 |
主分类号 |
E05F15/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|