Wireless fuel sensor system
First Claim
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1. A sensor device comprising:
- a capacitive probe configured to be used to generate an electrical capacitance measurement, the capacitive probe including;
a first conductor; and
a second conductor;
a controller configured to apply a direct current signal to the capacitive probe; and
a radio electrically coupled to the capacitive probe, the radio configured to;
receive the electrical capacitance measurement from the capacitive probe responsive to the direct current signal being applied to the capacitive probe;
generate a first signal encoding information based on the electrical capacitance measurement; and
provide the first signal to a particular conductor, wherein the particular conductor comprises the first conductor or the second conductor, and wherein the capacitive probe is configured to transmit the first signal to a remote device while the capacitive probe is simultaneously used to generate a second electrical capacitance measurement.
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Abstract
A sensor device includes a capacitive probe including a first conductor and a second conductor. The sensor device also includes a radio to generate a signal based on a measurement associated with the capacitive probe and to provide the signal to the first conductor for transmission using the capacitive probe as a transmission antenna.
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Citations
20 Claims
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1. A sensor device comprising:
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a capacitive probe configured to be used to generate an electrical capacitance measurement, the capacitive probe including; a first conductor; and a second conductor; a controller configured to apply a direct current signal to the capacitive probe; and a radio electrically coupled to the capacitive probe, the radio configured to; receive the electrical capacitance measurement from the capacitive probe responsive to the direct current signal being applied to the capacitive probe; generate a first signal encoding information based on the electrical capacitance measurement; and provide the first signal to a particular conductor, wherein the particular conductor comprises the first conductor or the second conductor, and wherein the capacitive probe is configured to transmit the first signal to a remote device while the capacitive probe is simultaneously used to generate a second electrical capacitance measurement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method comprising:
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generating sensor data using a capacitive probe including a first conductor and a second conductor, the sensor data generated responsive to a direct current signal applied to the capacitive probe from a controller, the sensor data based on electrical capacitance between the first conductor and the second conductor; transmitting the sensor data to a radio electrically coupled to the capacitive probe; generating a first signal at the radio, the first signal encoding information based on the sensor data; and transmitting the first signal from the radio to a remote device using the capacitive probe as a transmission antenna while the capacitive probe is simultaneously used to measure second sensor data. - View Dependent Claims (14, 15, 16, 17)
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18. A vehicle comprising:
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a fuel tank; a sensor unit located in the fuel tank, the sensor unit comprising; a capacitive probe configured to be used to generate an electrical capacitance measurement, the capacitive probe including; a first conductor; and a second conductor; a controller configured to apply a direct current signal to the capacitive probe; and a radio configured to; receive the electrical capacitance measurement from the capacitive probe responsive to the direct current signal being applied to the capacitive probe; generate a first signal based on the electrical capacitance measurement; and provide the first signal to a particular conductor, wherein the particular conductor comprises the first conductor or the second conductor, and wherein the capacitive probe is configured to transmit the first signal to a remote device while the capacitive probe is simultaneously used to generate a second electrical capacitance measurement. - View Dependent Claims (19, 20)
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Specification