PWM and variable frequency based position indicators

Details PWM and variable frequency based position indicators PWM and variable frequency based position indicators

2006-10-24

2006-10-24

Nguyen, Hung (Department: 2636)

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

C340S439000, C340S686100, C340S870160, C701S114000, C701S115000

Reexamination Certificate

active

07126463

ABSTRACT:
A control system includes a device having a position between minimum and maximum positions. A first position sensor senses the position of the device and generates a first position value. A second position sensor senses the position of the device and generates a second position value. A sensor module communicates with the first and second position sensors and generates a single signal waveform based on the first and second position values. A frequency of the waveform is varied based on the first position value. A duty cycle of the waveform is varied based on the second position value. A conductor has a first end that communicates with the sensor module and a second end that communicates with a control module. The sensor module transmits the waveform to the control module on the conductor. The control module decodes the waveform to determine the first and second position values.

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patent: 3631509 (1987-03-01), None
patent: 1973799 (1999-03-01), None
patent: 0871011 (1998-04-01), None

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