Logic capable power module
First Claim
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1. A wireless field device assembly comprising:
- a process sensor configured to monitor a process variable and produce a sensor signal;
a housing enclosing an interior space of the wireless field device;
a transmitter enclosed within the interior space, and configured to process the sensor signal; and
a power module configured to be housed in the interior space, removable from the interior space as a unit, the power module comprising;
first and second voltage sensors configured to sense first and second output voltages of the energy storage device and the local power source, respectively;
an energy storage device;
a connection to a local power source; and
a processor configured to provide the transmitter with a diagnostic report of the energy storage device and the local power source, wherein the diagnostic report comprises an identification of at least one of the energy storage device and the local power source based on the first and second output voltages.
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Abstract
A wireless field device assembly comprises a process sensor, a housing, a transmitter, and a power module. The process sensor is configured to monitor a process variable and produce a sensor signal. The housing encloses an interior space of the wireless field device. The transmitter is enclosed within the interior space, and is configured to process the sensor signal. The power module is configured to be housed in the interior space, and comprises an energy storage device, a connection to a local power source, and a processor configured to provide the transmitter with a diagnostic report of the energy storage device and the local power source.
35 Citations
25 Claims
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1. A wireless field device assembly comprising:
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a process sensor configured to monitor a process variable and produce a sensor signal; a housing enclosing an interior space of the wireless field device; a transmitter enclosed within the interior space, and configured to process the sensor signal; and a power module configured to be housed in the interior space, removable from the interior space as a unit, the power module comprising; first and second voltage sensors configured to sense first and second output voltages of the energy storage device and the local power source, respectively; an energy storage device; a connection to a local power source; and a processor configured to provide the transmitter with a diagnostic report of the energy storage device and the local power source, wherein the diagnostic report comprises an identification of at least one of the energy storage device and the local power source based on the first and second output voltages. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A power monitoring and diagnostic method for a power module for a process variable transmitter with an energy storage device and a local power source connection to a local power source, the method comprising:
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sensing within the power module a first output voltage of the local power source and a second output voltage of the energy storage device; flagging fault or changing conditions corresponding to output voltages of the local power source and the energy storage device; estimating a remaining energy storage device life based on the first and second output voltages; identifying at least one of the local power source and the energy storage device based on at least one of the first and second output voltages; and transmitting a diagnostic report including the estimated remaining energy storage device life, the flagged fault conditions, and the identification of the identification of at least one of the local power source and the energy storage device. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A wireless field device assembly comprising:
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a process sensor configured to monitor a process variable and produce a sensor signal; a housing enclosing an interior space of the wireless field device; a transmitter enclosed within the interior space, and configured to process the sensor signal; and a power module configured to be housed in the interior space and removable from the interior space as a single unit, the power module comprising; a connection to a local power source from which the power module draws power preferentially; an energy storage device from which the power module draws power supplementally, when power from the local power source is unavailable or insufficient to satisfy power demand; first and second voltage sensors configured to sense first and second output voltages of the energy storage device and the local power source, respectively; and a processor configured to provide the transmitter with a diagnostic report comprising an identification of at least one of the energy storage device and the local power source based on the first and second output voltages.
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Specification