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2575results about "DC motor speed/torque control" patented technology

Closed-loop, daylight-sensing, automatic window-covering system insensitive to radiant spectrum produced by gaseous-discharge lamps

InactiveUS6084231AMaximized ratioOptical radiation measurementLight dependant control systemsSpectral responseLow-pass filter
A system for automatic regulation of daylight admitted by a window in the presence of artificial illumination produced by a high-efficiency (e.g., fluorescent-type) electric lamp. A preferred embodiment, adaptive window covering system 10, consists of an illuminance sensor 11, a conventional control apparatus 12, and a conventional shading means 13. System 10 is used in conjunction with a conventional, high-efficiency, electric lamp 14 and a conventional window 18, in a room 19. Sensor 11 produces a signal dependent on power contained in a portion of the daylight spectrum, but substantially insensitive to power contained in the spectrum of artificial illumination produced by lamp 14. In a preferred embodiment, sensor 11 includes a silicon photodiode and optical low-pass filter to provide a spectral response which extends from approximately 800 to 1200 nanometers, which falls outside the spectrum produced by typical fluorescent lamps (e.g, 300 to 750 nanometers). Sensor 11 is oriented to sample the ambient illumination in room 19, which includes both daylight and artificial components. Control apparatus 12 produces an actuating signal dependent on the output of sensor 11. Shading means 13 varies the amount of daylight admitted by window 18 as a function of the actuating signal produced by control apparatus 12. Thus, system 10 varies the amount of daylight admitted by window 18 as a function of the power contained in a portion of the daylight spectrum, but independent of the power contained in the spectrum produced by lamp 14.

Wireless operating system utilizing a multi-functional wall station transmitter for a motorized door or gate operator

A wireless operating system (10) utilizing a multi-functional wall station (12) for a motorized door/gate operator includes an operator (50) for controlling the movement of a door/gate (54) between various positions. The system has an operator with a receiver (56) and a wall station transmitter (12) for transmitting a signal (42) to the receiver. The signal initiates separate operator functions in addition to opening and closing of the door/gate. A remote transmitter (70) may send a remote signal (74) received by the receiver, wherein the receiver is capable of distinguishing between the wall station signal (42) and the remote signal (74). The wall station includes a transmitter programming button (24), wherein actuation of the transmitter programming button places the wall station transmitter in a learn mode, and wherein subsequent actuation of the remote transmitter positively identifies the remote transmitter for use with the wall station. A light (66) powered by the operator and a light actuation button (18) provided by the wall station transmitter is included in the system. Actuation of the light actuation button (18) functions to switch the light on or off. A pet height button (22), provided by the wall station transmitter, selectively positions the height of the gate/door (54) from its fully closed position to allow ingress and egress of a pet. A delay-close button (20) closes the door/gate after a predetermined period of time. Actuation of a door installation button (28) sequences the door/gate and said operator through various operational parameters to establish a door operating profile. A keyless entry transmitter (80) and a second wall station may also control the operator.

System for automatically adjustable devices in an automotive vehicle

A system is described for automatically adjusting various adjustable devices in an automotive vehicle such as the seats, mirrors, pedal positions and the like. The system includes a physiological characteristic scanner which generates an output signal representative of that physiological characteristic of the person seated in the driver seat and, optionally, in the passenger's seat. Such physiological characteristics includes, for example, retinal scanners, fingerprint readers, thermal scanners and the like. The output signal from the physiological characteristic determining device is coupled as an input signal to a processor which also has access to digital memory containing data representing the physiological characteristics of authorized drivers of the automotive vehicle. This memory further includes data representative of the various position(s) of the adjustable device(s) for each authorized driver and optionally passenger of the automotive vehicle. Thus, upon identification of the authorized driver/passenger from his or her physiological data, the processor automatically generates position signals to the various adjustable devices in order to move the adjustable devices to preselected positions suitable for that particular authorized driver or passenger. In one embodiment of the invention, the system also monitors and stores the amount of time spent by the driver or passenger of the vehicle in the vehicle.
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