Wireless system and method for measuring an operative condition of a machine
First Claim
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1. A system comprising:
- a sensor sized to be within a reservoir of a machine having moving parts that are lubricated by a liquid in the reservoir, the sensor configured to obtain a measurement of the liquid that is representative of one or more of a quantity or quality of the liquid in the reservoir; and
a device body operably coupled with the sensor, the device body including a processing unit and a transponder, the transponder configured to wirelessly receive an interrogation signal from a remote reader that includes electric energy that energizes the processing unit to generate a data signal representative of the measurement of the liquid obtained by the sensor, the electric energy of the interrogation signal additionally energizing the transponder to wirelessly communicate the data signal to the remote reader;
the device body further including an accelerometer operably coupled to the processing unit and configured to obtain a vibration measurement of the reservoir, the processing unit configured to generate the data signal representative of the measurement of the liquid for communication by the transponder during the stationary state of the machine based on the vibration measurement.
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Abstract
A system includes a sensor configured to be disposed within a reservoir of a machine having moving parts that are lubricated by a liquid in the reservoir. The sensor is configured to obtain a measurement of the liquid that is representative of at least one of a quantity or quality of the liquid in the reservoir. The system also includes a device body operably coupled to the sensor. The device body has a processing unit that is operably coupled to the sensor and configured to generate first data signals representative of the measurement of the liquid. The device body also includes a transmitter that is configured to wirelessly communicate the first data signals to a remote reader.
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Citations
18 Claims
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1. A system comprising:
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a sensor sized to be within a reservoir of a machine having moving parts that are lubricated by a liquid in the reservoir, the sensor configured to obtain a measurement of the liquid that is representative of one or more of a quantity or quality of the liquid in the reservoir; and a device body operably coupled with the sensor, the device body including a processing unit and a transponder, the transponder configured to wirelessly receive an interrogation signal from a remote reader that includes electric energy that energizes the processing unit to generate a data signal representative of the measurement of the liquid obtained by the sensor, the electric energy of the interrogation signal additionally energizing the transponder to wirelessly communicate the data signal to the remote reader; the device body further including an accelerometer operably coupled to the processing unit and configured to obtain a vibration measurement of the reservoir, the processing unit configured to generate the data signal representative of the measurement of the liquid for communication by the transponder during the stationary state of the machine based on the vibration measurement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system comprising:
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a sensor sized to be disposed within a reservoir of a machine having moving parts that are lubricated by a liquid in the reservoir, the sensor configured to obtain a measurement of the liquid that is representative of at least one of a quantity or quality of the liquid in the reservoir; and a device body operably coupled to the sensor, the device body including a processing unit and a transmitter, the processing unit configured to communicate a query to the sensor requesting the sensor to obtain the measurement of the liquid responsive to receiving an interrogation signal from a remote reader, the processing unit further configured to generate a data signal representative of the measurement of the liquid obtained by the sensor, the transmitter configured to wirelessly communicate the data signal to the remote reader; the device body further including an accelerometer operably coupled to the processing unit and configured to obtain a vibration measurement of the reservoir, the processing unit configured to generate the data signal representative of the measurement of the liquid for communication by the transmitter during the stationary state of the machine based on the vibration measurement. - View Dependent Claims (18)
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Specification